/* roulang page: index */
:root {
            --bg-primary: #0A0F1E;
            --bg-secondary: #0D1428;
            --bg-card: rgba(20, 30, 55, 0.65);
            --bg-card-hover: rgba(24, 36, 68, 0.82);
            --primary: #1E6FFF;
            --primary-light: #00C2FF;
            --accent: #FF4D3A;
            --accent-pink: #FF2E88;
            --text-primary: #EAF3FF;
            --text-secondary: rgba(234, 243, 255, 0.68);
            --text-tertiary: rgba(234, 243, 255, 0.42);
            --border-glass: rgba(110, 210, 255, 0.22);
            --border-glass-hover: rgba(0, 194, 255, 0.55);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 10px rgba(0, 194, 255, 0.35);
            --shadow-glow-hover: 0 0 18px rgba(0, 194, 255, 0.55);
            --shadow-inner-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --transition-fast: 0.2s ease;
            --transition-med: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-num: "DIN", "Roboto Condensed", "Bahnschrift", "Arial Narrow", sans-serif;
            --container-max: 1200px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 44px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover,
        a:focus {
            color: #66d9ff;
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            margin: 0 0 0.5em 0;
            letter-spacing: 0.01em;
        }

        h1 {
            font-size: clamp(2rem, 4.5vw, 3.25rem);
            font-weight: 800;
            letter-spacing: -0.015em;
        }
        h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            letter-spacing: -0.005em;
        }
        h3 {
            font-size: clamp(1.1rem, 1.8vw, 1.35rem);
            font-weight: 600;
        }

        p {
            margin: 0 0 1.25em 0;
            color: var(--text-secondary);
            font-size: 0.975rem;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--section-pad-desktop) 0;
            position: relative;
        }
        section:nth-of-type(even) {
            background-color: rgba(13, 20, 40, 0.55);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            text-transform: uppercase;
            margin-bottom: 0.6rem;
            border: 1px solid rgba(0, 194, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.9rem;
            background: rgba(0, 194, 255, 0.07);
        }
        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            margin-bottom: 0.4rem;
            color: var(--text-primary);
        }
        .section-sub {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        .section-title-wrap {
            margin-bottom: 1.5rem;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-cn);
            font-size: 0.92rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 0.7rem 1.7rem;
            cursor: pointer;
            transition: all var(--transition-med);
            border: none;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            color: #ffffff;
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(0, 194, 255, 0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #2a7bff, #26cdff);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-1px);
            color: #ffffff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }
        .btn-ghost {
            background: transparent;
            color: var(--primary-light);
            border: 1px solid var(--border-glass);
            box-shadow: none;
        }
        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(0, 194, 255, 0.08);
            border-color: var(--border-glass-hover);
            color: #66d9ff;
            transform: translateY(-1px);
        }
        .btn-accent {
            background: linear-gradient(135deg, #FF4D3A, #FF2E88);
            color: #ffffff;
            box-shadow: 0 0 10px rgba(255, 77, 58, 0.35);
            border: 1px solid rgba(255, 77, 58, 0.3);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: linear-gradient(135deg, #ff6150, #ff4599);
            box-shadow: 0 0 18px rgba(255, 77, 58, 0.5);
            transform: translateY(-1px);
            color: #ffffff;
        }
        .btn-sm {
            padding: 0.45rem 1.1rem;
            font-size: 0.82rem;
        }
        .btn-lg {
            padding: 0.85rem 2.2rem;
            font-size: 1rem;
        }

        /* ========== GLASS CARD ========== */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), var(--shadow-inner-highlight);
            transition: all var(--transition-med);
            overflow: hidden;
            position: relative;
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glass-hover);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45), 0 0 16px rgba(0, 194, 255, 0.2);
            transform: translateY(-4px);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 15, 30, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(110, 210, 255, 0.15);
            padding: 0.6rem 0;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            text-decoration: none;
            flex-shrink: 0;
            letter-spacing: -0.01em;
        }
        .logo:hover,
        .logo:focus {
            color: #fff;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            color: #fff;
            font-size: 0.9rem;
            box-shadow: 0 0 10px rgba(0, 194, 255, 0.4);
        }
        .logo-text {
            font-size: 1.15rem;
        }
        .logo-text span {
            color: var(--primary-light);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .main-nav a {
            color: #DCE9FF;
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            text-decoration: none;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-light);
            border-bottom-color: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary-light);
            border-bottom-color: var(--primary-light);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            flex-shrink: 0;
        }
        .header-cta .btn {
            padding: 0.5rem 1.25rem;
            font-size: 0.85rem;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 6px;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-med);
            transform-origin: center;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 0.5rem;
            padding: 1rem 20px;
            background: rgba(10, 15, 30, 0.95);
            border-bottom: 1px solid rgba(110, 210, 255, 0.15);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .mobile-menu a {
            color: #DCE9FF;
            font-size: 0.95rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid rgba(110, 210, 255, 0.08);
            text-decoration: none;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary-light);
        }
        .mobile-menu .mobile-cta {
            display: flex;
            gap: 0.8rem;
            margin-top: 0.5rem;
            padding-top: 0.8rem;
            border-top: 1px solid rgba(110, 210, 255, 0.15);
        }
        .mobile-menu .btn {
            flex: 1;
            text-align: center;
        }

        /* ========== HERO (Industrial Parameter) ========== */
        .hero {
            padding: 3rem 0 3.5rem;
            background-image: url('/assets/images/7dd833db75aef669.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(110, 210, 255, 0.12);
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(160deg, rgba(10, 15, 30, 0.92) 0%, rgba(13, 20, 40, 0.72) 40%, rgba(10, 15, 30, 0.88) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(110, 210, 255, 0.04) 39px, rgba(110, 210, 255, 0.04) 40px),
                repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(110, 210, 255, 0.04) 39px, rgba(110, 210, 255, 0.04) 40px);
            z-index: 2;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 3;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 0.9fr;
            gap: 2.5rem;
            align-items: center;
            margin-bottom: 2rem;
        }
        .hero-left .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--primary-light);
            border: 1px solid rgba(0, 194, 255, 0.35);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.9rem;
            background: rgba(0, 194, 255, 0.08);
            margin-bottom: 1rem;
        }
        .hero-left h1 {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            margin-bottom: 0.6rem;
            color: #fff;
        }
        .hero-left h1 .highlight {
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 540px;
            margin-bottom: 1.5rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem;
            margin-bottom: 1.2rem;
        }

        .hero-param-panel {
            background: rgba(15, 25, 50, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 1.5rem 1.8rem;
            box-shadow: var(--shadow-card), 0 0 20px rgba(0, 194, 255, 0.12);
        }
        .hero-param-panel .param-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1rem;
            font-size: 0.85rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(110, 210, 255, 0.12);
            padding-bottom: 0.7rem;
        }
        .hero-param-panel .param-title .live-dot {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #4ade80;
            font-size: 0.78rem;
        }
        .hero-param-panel .live-dot::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #4ade80;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }
        .param-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(110, 210, 255, 0.07);
            font-size: 0.85rem;
        }
        .param-row:last-child {
            border-bottom: none;
        }
        .param-row .label {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .param-row .label i {
            color: var(--primary-light);
            font-size: 0.8rem;
            width: 16px;
            text-align: center;
        }
        .param-row .value {
            font-family: var(--font-num);
            font-weight: 700;
            color: var(--primary-light);
            font-size: 0.95rem;
        }

        .hero-metrics-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
            padding: 1.2rem 1.5rem;
            background: rgba(15, 25, 50, 0.75);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            margin-top: 0.5rem;
        }
        .hero-metric-item {
            text-align: center;
        }
        .hero-metric-item .num {
            font-family: var(--font-num);
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.3;
        }
        .hero-metric-item .label-text {
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        /* ========== SECTION COMMON ========== */
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .grid-card {
            padding: 1.5rem 1.6rem;
        }
        .grid-card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 194, 255, 0.1);
            border: 1px solid rgba(0, 194, 255, 0.25);
            color: var(--primary-light);
            font-size: 1.1rem;
            margin-bottom: 0.8rem;
        }
        .grid-card h3 {
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
        }
        .grid-card p {
            font-size: 0.88rem;
            margin-bottom: 0;
            color: var(--text-secondary);
        }

        /* ========== ASYMMETRIC LAYOUT ========== */
        .asym-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 1.8rem;
            align-items: start;
        }
        .news-list .news-item {
            display: flex;
            gap: 1rem;
            padding: 0.9rem 1rem;
            border-bottom: 1px solid rgba(110, 210, 255, 0.1);
            transition: all var(--transition-fast);
            border-radius: 6px;
        }
        .news-list .news-item:hover {
            background: rgba(0, 194, 255, 0.05);
        }
        .news-item .news-cover {
            width: 88px;
            height: 60px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
            border: 1px solid rgba(110, 210, 255, 0.2);
        }
        .news-item .news-info h4 {
            font-size: 0.92rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
            color: var(--text-primary);
        }
        .news-item .news-info p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-bottom: 0.15rem;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .news-item .news-info .news-date {
            font-size: 0.75rem;
            color: var(--text-tertiary);
        }

        .hot-panel {
            padding: 1.5rem 1.4rem;
        }
        .hot-panel .hot-title {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hot-panel .hot-title i {
            color: var(--accent);
        }
        .hot-panel .hot-link {
            display: block;
            padding: 0.55rem 0.7rem;
            font-size: 0.88rem;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: all var(--transition-fast);
            text-decoration: none;
            border-left: 2px solid transparent;
        }
        .hot-panel .hot-link:hover {
            background: rgba(0, 194, 255, 0.06);
            color: var(--primary-light);
            border-left-color: var(--primary-light);
        }
        .hot-panel .hot-link .rank {
            display: inline-block;
            width: 20px;
            text-align: center;
            font-family: var(--font-num);
            font-size: 0.8rem;
            color: var(--text-tertiary);
            margin-right: 6px;
        }
        .hot-panel .hot-link:nth-child(2) .rank,
        .hot-panel .hot-link:nth-child(3) .rank,
        .hot-panel .hot-link:nth-child(4) .rank {
            color: var(--accent);
            font-weight: 700;
        }

        /* ========== COMPARISON ========== */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
        .comparison-card {
            padding: 1.8rem 2rem;
        }
        .comparison-card.dim {
            opacity: 0.75;
            border-color: rgba(110, 210, 255, 0.12);
        }
        .comparison-card .compare-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comparison-card .compare-title i {
            font-size: 1rem;
        }
        .comparison-card.dim .compare-title i {
            color: var(--text-tertiary);
        }
        .comparison-card.highlight-card .compare-title i {
            color: var(--primary-light);
        }
        .compare-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 0.5rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid rgba(110, 210, 255, 0.07);
        }
        .compare-item:last-child {
            border-bottom: none;
        }
        .compare-item i {
            margin-top: 3px;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .compare-item.dim-item i {
            color: var(--text-tertiary);
        }
        .compare-item.highlight-item i {
            color: #4ade80;
        }

        /* ========== TIMELINE ========== */
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, rgba(0, 194, 255, 0.4), rgba(0, 194, 255, 0.08));
        }
        .timeline-item {
            position: relative;
            padding-bottom: 1.8rem;
            padding-left: 1.2rem;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -1.8rem;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            box-shadow: 0 0 8px rgba(0, 194, 255, 0.5);
            border: 2px solid var(--bg-primary);
        }
        .timeline-item .timeline-date {
            font-family: var(--font-num);
            font-size: 0.78rem;
            color: var(--primary-light);
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 0.2rem;
        }
        .timeline-item h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
            color: var(--text-primary);
        }
        .timeline-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: center;
        }
        .brand-intro-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
        }
        .brand-intro-img img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            filter: brightness(0.9);
        }
        .brand-intro-text h3 {
            font-size: 1.3rem;
            margin-bottom: 0.8rem;
        }
        .brand-intro-text p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 0.7rem;
        }

        /* ========== FAQ / ACCORDION ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }
        .faq-item {
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
            background: rgba(15, 25, 50, 0.55);
            overflow: hidden;
            transition: all var(--transition-med);
        }
        .faq-item:hover {
            border-color: var(--border-glass-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 1.3rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-primary);
            user-select: none;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question .faq-toggle {
            flex-shrink: 0;
            transition: transform var(--transition-med);
            color: var(--text-secondary);
            font-size: 0.8rem;
        }
        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 1.3rem;
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 1.3rem 1.1rem;
        }

        /* ========== QUICK ANSWER ========== */
        .quick-answer-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }
        .quick-answer-card {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            padding: 0.9rem 1.1rem;
            border-radius: var(--radius-md);
            background: rgba(15, 25, 50, 0.55);
            border: 1px solid var(--border-glass);
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: all var(--transition-med);
            text-decoration: none;
        }
        .quick-answer-card:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.06);
            transform: translateY(-2px);
        }
        .quick-answer-card i {
            color: var(--primary-light);
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }
        .testimonial-card {
            padding: 1.5rem 1.4rem;
            text-align: left;
        }
        .testimonial-card .quote-icon {
            color: rgba(0, 194, 255, 0.3);
            font-size: 1.5rem;
            margin-bottom: 0.5rem;
        }
        .testimonial-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0.8rem;
        }
        .testimonial-card .player-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-card .player-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: #fff;
            flex-shrink: 0;
        }
        .testimonial-card .player-name {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .testimonial-card .player-role {
            font-size: 0.78rem;
            color: var(--text-tertiary);
        }

        /* ========== FORM ========== */
        .form-container {
            max-width: 640px;
            margin: 0 auto;
            padding: 2.2rem 2.5rem;
        }
        .form-container h3 {
            text-align: center;
            margin-bottom: 0.4rem;
        }
        .form-container .form-sub {
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }
        .form-group {
            margin-bottom: 1.1rem;
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 0.35rem;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
            background: rgba(15, 25, 50, 0.7);
            color: var(--text-primary);
            font-family: var(--font-cn);
            font-size: 0.92rem;
            transition: border-color var(--transition-fast);
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary-light);
            outline: none;
            box-shadow: 0 0 0 2px rgba(0, 194, 255, 0.15);
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-tertiary);
        }
        .form-group select {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='rgba(234,243,255,0.5)' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            padding-right: 2.5rem;
        }
        .form-submit-row {
            text-align: center;
            margin-top: 1.2rem;
        }

        /* ========== SUBSCRIBE / APP ========== */
        .subscribe-panel {
            text-align: center;
            padding: 2.5rem 2rem;
        }
        .subscribe-panel h3 {
            font-size: 1.3rem;
            margin-bottom: 0.4rem;
        }
        .subscribe-panel p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            max-width: 480px;
            margin: 0 auto 1.2rem;
        }
        .subscribe-row {
            display: flex;
            gap: 0.8rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .subscribe-row input {
            min-width: 260px;
            padding: 0.7rem 1.2rem;
            border-radius: var(--radius-pill);
            border: 1px solid var(--border-glass);
            background: rgba(15, 25, 50, 0.7);
            color: var(--text-primary);
            font-family: var(--font-cn);
            font-size: 0.9rem;
        }
        .subscribe-row input:focus {
            border-color: var(--primary-light);
            outline: none;
            box-shadow: 0 0 0 2px rgba(0, 194, 255, 0.15);
        }

        /* ========== MEDIA PARTNERS ========== */
        .media-partners {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
            align-items: center;
        }
        .media-partner-tag {
            padding: 0.6rem 1.4rem;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(110, 210, 255, 0.2);
            background: rgba(15, 25, 50, 0.5);
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .media-partner-tag:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.07);
        }

        /* ========== FOCUS TOPICS ========== */
        .focus-topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }
        .focus-topic-card {
            padding: 1.3rem 1.2rem;
            text-align: center;
        }
        .focus-topic-card .topic-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 194, 255, 0.1);
            border: 1px solid rgba(0, 194, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 0.7rem;
            font-size: 1.2rem;
            color: var(--primary-light);
        }
        .focus-topic-card h4 {
            font-size: 0.88rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
            color: var(--text-primary);
        }
        .focus-topic-card p {
            font-size: 0.78rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #080d1c;
            border-top: 1px solid rgba(110, 210, 255, 0.12);
            padding: 3rem 0 2rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-col .footer-logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col .footer-logo span {
            color: var(--primary-light);
        }
        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.8rem;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            padding: 0.3rem 0;
            transition: all var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(110, 210, 255, 0.08);
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.78rem;
            color: var(--text-tertiary);
            line-height: 1.9;
        }
        .footer-bottom a {
            color: var(--text-secondary);
            font-size: 0.78rem;
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        .footer-bottom .icp-info {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.2rem;
            margin-top: 0.4rem;
        }

        /* ========== ANIMATIONS ========== */
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }
        .fade-in-delay-1 {
            animation-delay: 0.1s;
            opacity: 0;
        }
        .fade-in-delay-2 {
            animation-delay: 0.2s;
            opacity: 0;
        }
        .fade-in-delay-3 {
            animation-delay: 0.3s;
            opacity: 0;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 0.8rem;
            }
            .main-nav a {
                font-size: 0.82rem;
            }
            .header-cta .btn {
                padding: 0.45rem 0.9rem;
                font-size: 0.78rem;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .focus-topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .hero-metrics-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .asym-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-pad-mobile) 0;
            }
            .main-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu.open {
                display: flex;
            }
            .grid-4,
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .quick-answer-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .brand-intro-grid {
                grid-template-columns: 1fr;
            }
            .hero-metrics-bar {
                grid-template-columns: 1fr 1fr;
                padding: 1rem;
            }
            .hero-metric-item .num {
                font-size: 1.4rem;
            }
            .focus-topic-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .form-container {
                padding: 1.5rem 1.3rem;
            }
            .subscribe-row input {
                min-width: 100%;
            }
            .hero-param-panel {
                padding: 1.2rem 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .hero {
                padding: 2rem 0 2.5rem;
            }
            .hero-left h1 {
                font-size: 1.7rem;
            }
            .hero-metrics-bar {
                grid-template-columns: 1fr;
                gap: 0.6rem;
            }
            .hero-metric-item .num {
                font-size: 1.3rem;
            }
            .btn-lg {
                padding: 0.7rem 1.5rem;
                font-size: 0.9rem;
            }
            .grid-card {
                padding: 1.2rem 1.2rem;
            }
            .comparison-card {
                padding: 1.3rem 1.2rem;
            }
            .news-item {
                flex-direction: column;
                gap: 0.5rem;
            }
            .news-item .news-cover {
                width: 100%;
                height: 110px;
                border-radius: 8px;
            }
            .footer-bottom .icp-info {
                flex-direction: column;
                gap: 0.3rem;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A0F1E;
            --bg-secondary: #0D1428;
            --bg-card: rgba(20, 30, 55, 0.65);
            --bg-card-hover: rgba(24, 36, 68, 0.82);
            --primary: #1E6FFF;
            --primary-light: #00C2FF;
            --accent: #FF4D3A;
            --accent-pink: #FF2E88;
            --text-primary: #EAF3FF;
            --text-secondary: rgba(234, 243, 255, 0.68);
            --text-tertiary: rgba(234, 243, 255, 0.42);
            --border-glass: rgba(110, 210, 255, 0.22);
            --border-glass-hover: rgba(0, 194, 255, 0.55);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 10px rgba(0, 194, 255, 0.35);
            --shadow-glow-hover: 0 0 18px rgba(0, 194, 255, 0.55);
            --shadow-inner-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --transition-fast: 0.2s ease;
            --transition-med: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-num: "DIN", "Roboto Condensed", "Bahnschrift", "Arial Narrow", sans-serif;
            --container-max: 1200px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 44px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            margin: 0;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover,
        a:focus {
            color: #66d9ff;
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--section-pad-desktop) 0;
            position: relative;
        }

        section:nth-of-type(even) {
            background-color: rgba(13, 20, 40, 0.55);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            text-transform: uppercase;
            margin-bottom: 0.6rem;
            border: 1px solid rgba(0, 194, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.9rem;
            background: rgba(0, 194, 255, 0.07);
        }

        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            margin-bottom: 0.4rem;
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.3;
        }

        .section-sub {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .section-title-wrap {
            margin-bottom: 1.5rem;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-cn);
            font-size: 0.92rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 0.7rem 1.7rem;
            cursor: pointer;
            transition: all var(--transition-med);
            border: none;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            color: #ffffff;
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(0, 194, 255, 0.35);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #2a7bff, #26cdff);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-1px);
            color: #ffffff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .btn-ghost {
            background: transparent;
            color: var(--primary-light);
            border: 1px solid var(--border-glass);
            box-shadow: none;
        }

        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(0, 194, 255, 0.08);
            border-color: var(--border-glass-hover);
            color: #66d9ff;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: linear-gradient(135deg, #FF4D3A, #FF2E88);
            color: #ffffff;
            box-shadow: 0 0 10px rgba(255, 77, 58, 0.35);
            border: 1px solid rgba(255, 77, 58, 0.3);
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: linear-gradient(135deg, #ff6150, #ff4599);
            box-shadow: 0 0 18px rgba(255, 77, 58, 0.5);
            transform: translateY(-1px);
            color: #ffffff;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 30, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(110, 210, 255, 0.15);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: var(--shadow-glow);
        }

        .nav-logo .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .nav-logo .logo-text span {
            color: var(--primary-light);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .main-nav a {
            display: inline-block;
            padding: 0.5rem 0.85rem;
            font-size: 0.9rem;
            color: #DCE9FF;
            border-radius: 8px;
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
            transition: width var(--transition-med);
        }

        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-light);
        }

        .main-nav a:hover::after,
        .main-nav a:focus::after {
            width: 60%;
        }

        .main-nav a.active {
            color: var(--primary-light);
            font-weight: 600;
        }

        .main-nav a.active::after {
            width: 60%;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-cta .btn {
            padding: 0.55rem 1.2rem;
            font-size: 0.85rem;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            font-size: 1.2rem;
            padding: 0.45rem 0.7rem;
            border-radius: 8px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            border-color: var(--border-glass-hover);
            color: var(--primary-light);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-tertiary);
            margin-bottom: 0.6rem;
            flex-wrap: wrap;
        }

        .breadcrumb-row a {
            color: var(--text-secondary);
        }

        .breadcrumb-row a:hover {
            color: var(--primary-light);
        }

        .breadcrumb-row .sep {
            color: var(--text-tertiary);
            font-size: 0.7rem;
        }

        .breadcrumb-row .current {
            color: var(--primary-light);
            font-weight: 500;
        }

        /* ========== CATEGORY BANNER ========== */
        .category-banner {
            padding: 36px 0 28px;
            background: linear-gradient(180deg, rgba(13, 20, 40, 0.4), rgba(10, 15, 30, 0.85));
            border-bottom: 1px solid rgba(110, 210, 255, 0.12);
        }

        .category-banner h1 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 750;
            line-height: 1.3;
            margin: 0 0 0.4rem;
            color: var(--text-primary);
        }

        .category-banner .banner-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }

        /* ========== GLASS CARDS ========== */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), var(--shadow-inner-highlight);
            transition: all var(--transition-med);
            overflow: hidden;
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glass-hover);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45), 0 0 12px rgba(0, 194, 255, 0.2);
            transform: translateY(-3px);
        }

        /* ========== MATCH LIST ========== */
        .match-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .match-card {
            display: flex;
            gap: 16px;
            align-items: stretch;
            padding: 16px;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), var(--shadow-inner-highlight);
            transition: all var(--transition-med);
            position: relative;
        }

        .match-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glass-hover);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4), 0 0 10px rgba(0, 194, 255, 0.18);
            transform: translateY(-2px);
        }

        .match-card .match-cover {
            width: 100px;
            height: 100px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(110, 210, 255, 0.2);
        }

        .match-card .match-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .match-card .match-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-width: 0;
        }

        .match-card .match-league {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            color: var(--text-tertiary);
            margin: 0;
        }

        .match-card .match-league .live-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 1.2s ease-in-out infinite;
            display: inline-block;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 4px var(--accent);
            }
            50% {
                opacity: 0.4;
                box-shadow: none;
            }
        }

        .match-card .match-teams {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin: 0;
        }

        .match-card .match-score {
            font-family: var(--font-num);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-light);
            letter-spacing: 0.02em;
        }

        .match-card .match-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin: 0;
        }

        .match-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.15rem 0.6rem;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(110, 210, 255, 0.3);
            background: rgba(0, 194, 255, 0.08);
            color: var(--primary-light);
            white-space: nowrap;
        }

        .match-tag.live {
            border-color: rgba(255, 77, 58, 0.4);
            background: rgba(255, 77, 58, 0.1);
            color: #FF6B5A;
        }

        .match-tag.upcoming {
            border-color: rgba(255, 176, 59, 0.35);
            background: rgba(255, 176, 59, 0.08);
            color: #FFB33B;
        }

        .match-tag.finished {
            border-color: rgba(110, 210, 255, 0.2);
            background: rgba(110, 210, 255, 0.05);
            color: var(--text-tertiary);
        }

        /* ========== STAT STRIP ========== */
        .stat-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .stat-strip .stat-item {
            padding: 18px 20px;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all var(--transition-med);
        }

        .stat-strip .stat-item:hover {
            border-color: var(--border-glass-hover);
            background: var(--bg-card-hover);
            transform: translateY(-2px);
        }

        .stat-strip .stat-num {
            font-family: var(--font-num);
            font-size: 2rem;
            font-weight: 700;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .stat-strip .stat-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ========== SCHEDULE CALENDAR ========== */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .schedule-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 18px;
            background: rgba(20, 30, 55, 0.45);
            border: 1px solid rgba(110, 210, 255, 0.15);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }

        .schedule-item:hover {
            border-color: var(--border-glass-hover);
            background: rgba(24, 36, 68, 0.6);
        }

        .schedule-item .schedule-date {
            font-family: var(--font-num);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-light);
            min-width: 70px;
            text-align: center;
            flex-shrink: 0;
        }

        .schedule-item .schedule-info {
            flex: 1;
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-primary);
        }

        .schedule-item .schedule-info .tag {
            font-size: 0.72rem;
            padding: 0.1rem 0.55rem;
            border-radius: var(--radius-pill);
            background: rgba(0, 194, 255, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(0, 194, 255, 0.25);
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .faq-accordion .accordion-item {
            margin-bottom: 12px;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-accordion .accordion-item:hover {
            border-color: var(--border-glass-hover);
        }

        .faq-accordion .accordion-item.is-active {
            border-color: var(--border-glass-hover);
            box-shadow: 0 0 16px rgba(0, 194, 255, 0.15);
        }

        .faq-accordion .accordion-title {
            display: block;
            padding: 16px 20px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            position: relative;
            padding-right: 48px;
            transition: color var(--transition-fast);
        }

        .faq-accordion .accordion-title:hover,
        .faq-accordion .accordion-title:focus {
            color: var(--primary-light);
        }

        .faq-accordion .accordion-title::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-tertiary);
            transition: transform var(--transition-med);
        }

        .faq-accordion .is-active .accordion-title::after {
            transform: translateY(-50%) rotate(180deg);
            color: var(--primary-light);
        }

        .faq-accordion .accordion-content {
            padding: 0 20px 18px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.85;
            display: none;
        }

        .faq-accordion .is-active .accordion-content {
            display: block;
        }

        /* ========== BRAND INTRO MINI ========== */
        .brand-mini {
            display: flex;
            gap: 24px;
            align-items: center;
            flex-wrap: wrap;
            padding: 28px;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .brand-mini .brand-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow);
        }

        .brand-mini .brand-text {
            flex: 1;
            min-width: 240px;
        }

        .brand-mini .brand-text h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 0.4rem;
            color: var(--text-primary);
        }

        .brand-mini .brand-text p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== CTA FORM ========== */
        .cta-form-card {
            max-width: 520px;
            margin: 0 auto;
            padding: 36px 32px;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), var(--shadow-inner-highlight);
            text-align: center;
        }

        .cta-form-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 0 0.4rem;
            color: var(--text-primary);
        }

        .cta-form-card .cta-sub {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0 0 1.5rem;
            line-height: 1.7;
        }

        .cta-form-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            text-align: left;
        }

        .cta-form-card label {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            display: block;
            margin-bottom: 4px;
        }

        .cta-form-card input,
        .cta-form-card select {
            width: 100%;
            padding: 0.65rem 1rem;
            border-radius: var(--radius-md);
            border: 1px solid rgba(110, 210, 255, 0.2);
            background: rgba(10, 15, 30, 0.7);
            color: var(--text-primary);
            font-family: var(--font-cn);
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }

        .cta-form-card input:focus,
        .cta-form-card select:focus {
            border-color: var(--border-glass-hover);
            box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.12);
            outline: none;
        }

        .cta-form-card input::placeholder {
            color: var(--text-tertiary);
        }

        .cta-form-card select {
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23EAF3FF' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
            cursor: pointer;
        }

        .cta-form-card select option {
            background: #0D1428;
            color: var(--text-primary);
        }

        .cta-form-card .btn {
            width: 100%;
            margin-top: 8px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(8, 12, 24, 0.85);
            border-top: 1px solid rgba(110, 210, 255, 0.12);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .footer-col a {
            display: block;
            font-size: 0.84rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--primary-light);
        }

        .footer-col p {
            font-size: 0.84rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .footer-logo span {
            color: var(--primary-light);
        }

        .footer-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(110, 210, 255, 0.1);
            padding-top: 20px;
            font-size: 0.8rem;
            color: var(--text-tertiary);
            text-align: center;
        }

        .footer-bottom .icp-info {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            font-size: 0.78rem;
            color: var(--text-tertiary);
        }

        .footer-bottom p {
            margin-bottom: 0.3rem;
        }

        .footer-bottom a {
            color: var(--text-tertiary);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .match-list-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 44px;
            }

            section {
                padding: var(--section-pad-desktop) 0;
            }

            .nav-container {
                flex-wrap: wrap;
                padding: 12px 20px;
                min-height: auto;
            }

            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 12px 0 6px;
                order: 10;
            }

            .main-nav.is-open {
                display: flex;
            }

            .main-nav a {
                padding: 0.8rem 1rem;
                font-size: 0.95rem;
                text-align: center;
                border-radius: 8px;
            }

            .main-nav a::after {
                display: none;
            }

            .main-nav a.active {
                background: rgba(0, 194, 255, 0.1);
                border: 1px solid rgba(0, 194, 255, 0.25);
            }

            .nav-cta {
                display: none;
                width: 100%;
                padding: 8px 0 4px;
                order: 11;
                justify-content: center;
                gap: 10px;
            }

            .nav-cta.is-open {
                display: flex;
            }

            .nav-cta .btn {
                flex: 1;
                max-width: 180px;
                padding: 0.6rem 1rem;
                font-size: 0.85rem;
            }

            .match-list-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .match-card {
                flex-direction: column;
                align-items: stretch;
            }

            .match-card .match-cover {
                width: 100%;
                height: 140px;
            }

            .stat-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }

            .stat-strip .stat-num {
                font-size: 1.6rem;
            }

            .schedule-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 12px 14px;
            }

            .schedule-item .schedule-date {
                min-width: auto;
                text-align: left;
            }

            .brand-mini {
                flex-direction: column;
                text-align: center;
                padding: 20px;
            }

            .brand-mini .brand-icon {
                margin: 0 auto;
            }

            .brand-mini .brand-text {
                text-align: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom .icp-info {
                flex-direction: column;
                gap: 4px;
            }

            .cta-form-card {
                padding: 24px 18px;
            }
        }

        @media (max-width: 520px) {
            .nav-container {
                padding: 10px 14px;
                gap: 10px;
            }

            .nav-logo .logo-text {
                font-size: 1.05rem;
            }

            .nav-logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.85rem;
            }

            .stat-strip {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .stat-strip .stat-num {
                font-size: 1.35rem;
            }

            .stat-strip .stat-label {
                font-size: 0.72rem;
            }

            .container {
                padding: 0 14px;
            }

            .category-banner h1 {
                font-size: 1.4rem;
            }

            .section-title {
                font-size: 1.35rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0F1E;
            --bg-secondary: #0D1428;
            --bg-card: rgba(20, 30, 55, 0.65);
            --bg-card-hover: rgba(24, 36, 68, 0.82);
            --primary: #1E6FFF;
            --primary-light: #00C2FF;
            --accent: #FF4D3A;
            --accent-pink: #FF2E88;
            --text-primary: #EAF3FF;
            --text-secondary: rgba(234, 243, 255, 0.68);
            --text-tertiary: rgba(234, 243, 255, 0.42);
            --border-glass: rgba(110, 210, 255, 0.22);
            --border-glass-hover: rgba(0, 194, 255, 0.55);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 10px rgba(0, 194, 255, 0.35);
            --shadow-glow-hover: 0 0 18px rgba(0, 194, 255, 0.55);
            --shadow-inner-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --transition-fast: 0.2s ease;
            --transition-med: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-num: "DIN", "Roboto Condensed", "Bahnschrift", "Arial Narrow", sans-serif;
            --container-max: 1200px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 44px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            margin: 0;
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(30, 111, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 194, 255, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(255, 77, 58, 0.03) 0%, transparent 45%);
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover,
        a:focus {
            color: #66d9ff;
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--section-pad-desktop) 0;
            position: relative;
        }

        section:nth-of-type(even) {
            background-color: rgba(13, 20, 40, 0.45);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            text-transform: uppercase;
            margin-bottom: 0.6rem;
            border: 1px solid rgba(0, 194, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.9rem;
            background: rgba(0, 194, 255, 0.07);
        }

        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            margin-bottom: 0.4rem;
            color: var(--text-primary);
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.35;
        }

        .section-sub {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .section-title-wrap {
            margin-bottom: 1.5rem;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-cn);
            font-size: 0.92rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 0.7rem 1.7rem;
            cursor: pointer;
            transition: all var(--transition-med);
            border: none;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            color: #ffffff;
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(0, 194, 255, 0.35);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #2a7bff, #26cdff);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-1px);
            color: #ffffff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .btn-ghost {
            background: transparent;
            color: var(--primary-light);
            border: 1px solid var(--border-glass);
            box-shadow: none;
        }

        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(0, 194, 255, 0.08);
            border-color: var(--border-glass-hover);
            color: #66d9ff;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: linear-gradient(135deg, #FF4D3A, #FF2E88);
            color: #ffffff;
            box-shadow: 0 0 10px rgba(255, 77, 58, 0.35);
            border: 1px solid rgba(255, 77, 58, 0.3);
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: linear-gradient(135deg, #ff6150, #ff4599);
            box-shadow: 0 0 18px rgba(255, 77, 58, 0.5);
            transform: translateY(-1px);
            color: #ffffff;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 30, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(110, 210, 255, 0.15);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo:hover,
        .brand-logo:focus {
            color: var(--text-primary);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(30, 111, 255, 0.25), rgba(0, 194, 255, 0.2));
            border: 1px solid rgba(0, 194, 255, 0.35);
            color: var(--primary-light);
            font-size: 0.9rem;
            box-shadow: 0 0 10px rgba(0, 194, 255, 0.25);
        }

        .brand-logo span {
            color: var(--primary-light);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            display: inline-block;
            padding: 0.45rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #DCE9FF;
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.05);
        }

        .main-nav a.active {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.08);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
            box-shadow: 0 0 6px rgba(0, 194, 255, 0.5);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-cta .btn {
            padding: 0.5rem 1.2rem;
            font-size: 0.85rem;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            font-size: 1.2rem;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            border-color: var(--border-glass-hover);
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.06);
        }

        /* Mobile nav panel */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 15, 30, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 99;
            padding: 1.5rem 20px 2.5rem;
            overflow-y: auto;
            flex-direction: column;
            gap: 0.5rem;
            border-top: 1px solid rgba(110, 210, 255, 0.15);
        }

        .mobile-nav-panel.is-open {
            display: flex;
        }

        .mobile-nav-panel a {
            display: block;
            padding: 0.8rem 1rem;
            font-size: 1rem;
            color: #DCE9FF;
            border-radius: 10px;
            transition: all var(--transition-fast);
        }

        .mobile-nav-panel a:hover,
        .mobile-nav-panel a:focus {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.06);
        }

        .mobile-nav-panel a.active {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.1);
            border: 1px solid rgba(0, 194, 255, 0.25);
        }

        .mobile-nav-cta {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 1px solid rgba(110, 210, 255, 0.15);
        }

        .mobile-nav-cta .btn {
            width: 100%;
            justify-content: center;
        }

        /* ========== BREADCRUMB + H1 ========== */
        .breadcrumb-bar {
            padding: 1.5rem 0 0.5rem;
            background: transparent;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-tertiary);
            flex-wrap: wrap;
            margin-bottom: 0.5rem;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--primary-light);
        }

        .breadcrumb .divider {
            color: var(--text-tertiary);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--primary-light);
            font-weight: 500;
        }

        .category-hero {
            padding: 0.5rem 0 1.5rem;
            background: transparent;
        }

        .category-hero h1 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 750;
            color: var(--text-primary);
            line-height: 1.3;
            margin: 0;
            letter-spacing: 0.01em;
        }

        .category-hero p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 0.5rem;
            max-width: 680px;
            line-height: 1.8;
        }

        /* ========== GLASS CARD ========== */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), var(--shadow-inner-highlight);
            transition: all var(--transition-med);
            overflow: hidden;
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glass-hover);
            box-shadow: var(--shadow-card), 0 0 18px rgba(0, 194, 255, 0.25);
            transform: translateY(-4px);
        }

        /* ========== DATA CARDS GRID ========== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .data-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .data-card-image {
            height: 170px;
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }

        .data-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .data-card:hover .data-card-image img {
            transform: scale(1.05);
        }

        .data-card-image::after{
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 15, 30, 0.7), rgba(10, 15, 30, 0.05));
    pointer-events: none;
    z-index: 1;
}

.data-card-body {
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.data-card-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--primary-light);
    border: 1px solid rgba(0, 194, 255, 0.3);
    border-radius: var(--radius-pill);
    padding: 0.2rem 0.7rem;
    margin-bottom: 0.6rem;
    background: rgba(0, 194, 255, 0.06);
    align-self: flex-start;
    letter-spacing: 0.04em;
}

.data-card-title {
    font-size: 1.05rem;
    font-weight: 650;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
    line-height: 1.45;
    letter-spacing: 0.01em;
}

.data-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0.8rem;
    flex: 1;
}

.data-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-tertiary);
    border-top: 1px solid rgba(110, 210, 255, 0.12);
    padding-top: 0.7rem;
    margin-top: auto;
}

.data-card-meta span i {
    margin-right: 4px;
    color: var(--primary-light);
}

/* ========== DATA OVERVIEW STRIP ========== */
.overview-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: -0.5rem;
}

.overview-item {
    background: var(--bg-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card), var(--shadow-inner-highlight);
    padding: 18px 18px 16px;
    text-align: center;
    transition: all var(--transition-med);
}

.overview-item:hover {
    border-color: var(--border-glass-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card), 0 0 14px rgba(0, 194, 255, 0.2);
}

.overview-number {
    font-family: var(--font-num);
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1E6FFF, #00C2FF);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.overview-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-top: 0.3rem;
    letter-spacing: 0.04em;
}

/* ========== SECTION SPECIFIC ========== */
.data-nav-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.nav-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: var(--bg-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    transition: all var(--transition-med);
    cursor: pointer;
}

.nav-card:hover {
    border-color: var(--border-glass-hover);
    background: var(--bg-card-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35), 0 0 16px rgba(0, 194, 255, 0.22);
}

.nav-card-icon {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(0, 194, 255, 0.1);
    border: 1px solid rgba(0, 194, 255, 0.25);
    color: var(--primary-light);
    font-size: 1.2rem;
}

.nav-card-info h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.2rem;
}

.nav-card-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* ========== FAQ ACCORDION ========== */
.faq-accordion {
    max-width: 820px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all var(--transition-med);
}

.faq-item:hover {
    border-color: var(--border-glass-hover);
}

.faq-question {
    width: 100%;
    background: transparent;
    border: none;
    padding: 1rem 1.3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-family: var(--font-cn);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-light);
}

.faq-question .faq-icon {
    flex-shrink: 0;
    color: var(--primary-light);
    transition: transform var(--transition-fast);
}

.faq-item.is-open .faq-question .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-med);
}

.faq-answer-inner {
    padding: 0 1.3rem 1.1rem;
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========== CTA FORM ========== */
.cta-form-wrap {
    max-width: 620px;
    margin: 0 auto;
}

.cta-form-card {
    background: var(--bg-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card), var(--shadow-inner-highlight);
    padding: 2rem 2.2rem;
}

.cta-form-card .form-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.cta-form-card .form-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-field label {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

.form-field input,
.form-field select {
    background: rgba(10, 15, 30, 0.6);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 0.7rem 1rem;
    font-family: var(--font-cn);
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    width: 100%;
}

.form-field input::placeholder {
    color: var(--text-tertiary);
}

.form-field input:focus,
.form-field select:focus {
    outline: none;
    border-color: var(--border-glass-hover);
    box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.15);
}

.form-field select option {
    background: #0D1428;
    color: var(--text-primary);
}

.form-submit {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

/* ========== FOOTER ========== */
.site-footer {
    background: rgba(10, 15, 30, 0.9);
    border-top: 1px solid rgba(110, 210, 255, 0.2);
    padding: 2.5rem 0 1.5rem;
    margin-top: 1rem;
    backdrop-filter: blur(10px);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr 0.8fr;
    gap: 30px;
    margin-bottom: 2rem;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 650;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.04em;
}

.footer-col a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-col a:hover,
.footer-col a:focus {
    color: var(--primary-light);
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.footer-logo span {
    color: var(--primary-light);
}

.footer-col p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(110, 210, 255, 0.1);
    padding-top: 1.2rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-bottom p {
    margin: 0.3rem 0;
    font-size: 0.8rem;
}

.icp-info {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 0.3rem 0;
    font-size: 0.78rem;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .overview-strip {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 60px;
    }
    .main-nav {
        display: none;
    }
    .nav-cta {
        display: none;
    }
    .nav-toggle {
        display: inline-flex;
    }
    .mobile-nav-panel {
        top: 60px;
    }
    section {
        padding: var(--section-pad-mobile) 0;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .data-grid {
        grid-template-columns: 1fr;
    }
    .data-nav-cards {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .cta-form-card {
        padding: 1.6rem 1.3rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .icp-info {
        flex-direction: column;
        gap: 4px;
    }
}

@media (max-width: 520px) {
    .overview-strip {
        grid-template-columns: 1fr;
    }
    .category-hero h1 {
        font-size: 1.5rem;
    }
    .data-card-body {
        padding: 14px 16px 16px;
    }
    .cta-form-card {
        padding: 1.3rem 1rem;
    }
    .btn {
        padding: 0.6rem 1.4rem;
        font-size: 0.85rem;
    }
}

/* roulang page: category4 */
:root {
            --bg-primary: #0A0F1E;
            --bg-secondary: #0D1428;
            --bg-card: rgba(20, 30, 55, 0.65);
            --bg-card-hover: rgba(24, 36, 68, 0.82);
            --primary: #1E6FFF;
            --primary-light: #00C2FF;
            --accent: #FF4D3A;
            --accent-pink: #FF2E88;
            --text-primary: #EAF3FF;
            --text-secondary: rgba(234, 243, 255, 0.68);
            --text-tertiary: rgba(234, 243, 255, 0.42);
            --border-glass: rgba(110, 210, 255, 0.22);
            --border-glass-hover: rgba(0, 194, 255, 0.55);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 10px rgba(0, 194, 255, 0.35);
            --shadow-glow-hover: 0 0 18px rgba(0, 194, 255, 0.55);
            --shadow-inner-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --transition-fast: 0.2s ease;
            --transition-med: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-num: "DIN", "Roboto Condensed", "Bahnschrift", "Arial Narrow", sans-serif;
            --container-max: 1200px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 44px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover,
        a:focus {
            color: #66d9ff;
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
            border-radius: var(--radius-md);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--section-pad-desktop) 0;
            position: relative;
        }
        section:nth-of-type(even) {
            background-color: rgba(13, 20, 40, 0.55);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            text-transform: uppercase;
            margin-bottom: 0.6rem;
            border: 1px solid rgba(0, 194, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.9rem;
            background: rgba(0, 194, 255, 0.07);
        }

        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .section-sub {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .section-title-wrap {
            margin-bottom: 1.5rem;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-cn);
            font-size: 0.92rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 0.7rem 1.7rem;
            cursor: pointer;
            transition: all var(--transition-med);
            border: none;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            color: #fff;
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(0, 194, 255, 0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #2a7bff, #26cdff);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }
        .btn-ghost {
            background: transparent;
            color: var(--primary-light);
            border: 1px solid var(--border-glass);
            box-shadow: none;
        }
        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(0, 194, 255, 0.08);
            border-color: var(--border-glass-hover);
            color: #66d9ff;
            transform: translateY(-1px);
        }
        .btn-accent {
            background: linear-gradient(135deg, #FF4D3A, #FF2E88);
            color: #fff;
            box-shadow: 0 0 10px rgba(255, 77, 58, 0.35);
            border: 1px solid rgba(255, 77, 58, 0.3);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: linear-gradient(135deg, #ff6150, #ff4599);
            box-shadow: 0 0 18px rgba(255, 77, 58, 0.5);
            transform: translateY(-1px);
            color: #fff;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(10, 15, 30, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(110, 210, 255, 0.15);
            transition: background var(--transition-med);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            min-height: 66px;
            gap: 0.5rem 1rem;
            padding-top: 0.5rem;
            padding-bottom: 0.5rem;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-cn);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .brand-logo:hover,
        .brand-logo:focus {
            color: #66d9ff;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            border-radius: 10px;
            color: #fff;
            font-size: 0.9rem;
            box-shadow: 0 0 10px rgba(0, 194, 255, 0.35);
            flex-shrink: 0;
        }
        .brand-logo span {
            color: var(--primary-light);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-wrap: wrap;
        }
        .main-nav a {
            display: inline-block;
            font-size: 0.9rem;
            font-weight: 500;
            color: #DCE9FF;
            padding: 0.45rem 0.85rem;
            border-radius: var(--radius-pill);
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 0.15rem;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
            transition: width var(--transition-fast);
        }
        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.06);
        }
        .main-nav a:hover::after,
        .main-nav a:focus::after {
            width: 60%;
        }
        .main-nav a.active {
            color: var(--primary-light);
            font-weight: 600;
        }
        .main-nav a.active::after {
            width: 60%;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-cta .btn {
            padding: 0.5rem 1.2rem;
            font-size: 0.85rem;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            font-size: 1.4rem;
            padding: 0.3rem 0.8rem;
            cursor: pointer;
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }
        .nav-toggle:hover {
            background: rgba(0, 194, 255, 0.08);
            border-color: var(--border-glass-hover);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: linear-gradient(180deg, rgba(10, 15, 30, 0.95), rgba(13, 20, 40, 0.9));
            border-bottom: 1px solid rgba(110, 210, 255, 0.1);
            padding: 1rem 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .breadcrumb .sep {
            color: var(--text-tertiary);
            margin: 0 0.2rem;
        }
        .breadcrumb .current {
            color: var(--primary-light);
            font-weight: 500;
        }

        /* ========== CATEGORY HERO ========== */
        .cat-hero {
            background: linear-gradient(135deg, rgba(10, 15, 30, 0.92), rgba(13, 20, 40, 0.85)), url('/assets/images/7dd833db75aef669.webp') center/cover no-repeat;
            padding: 3.2rem 0 2.6rem;
            border-bottom: 1px solid rgba(110, 210, 255, 0.12);
            position: relative;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(30, 111, 255, 0.12), transparent 55%);
            pointer-events: none;
        }
        .cat-hero .container {
            position: relative;
            z-index: 1;
        }
        .cat-hero h1 {
            font-size: clamp(1.8rem, 3.6vw, 2.6rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 0.6rem;
            color: var(--text-primary);
        }
        .cat-hero .cat-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
        }

        /* ========== CARDS ========== */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), var(--shadow-inner-highlight);
            padding: 1.5rem;
            transition: all var(--transition-med);
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glass-hover);
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45), 0 0 16px rgba(0, 194, 255, 0.25);
        }

        .post-card {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-med);
            height: 100%;
        }
        .post-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glass-hover);
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 14px rgba(0, 194, 255, 0.2);
        }
        .post-card .post-thumb {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: rgba(30, 111, 255, 0.1);
            position: relative;
        }
        .post-card .post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }
        .post-card:hover .post-thumb img {
            transform: scale(1.04);
        }
        .post-card .post-body {
            padding: 1rem 1.2rem 1.3rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex: 1;
        }
        .post-card .post-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.08);
            border: 1px solid rgba(0, 194, 255, 0.25);
            border-radius: var(--radius-pill);
            padding: 0.2rem 0.8rem;
            align-self: flex-start;
        }
        .post-card .post-title {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.45;
            margin: 0;
        }
        .post-card .post-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--text-tertiary);
            margin-top: auto;
            padding-top: 0.5rem;
            border-top: 1px solid rgba(110, 210, 255, 0.1);
        }
        .post-card .post-meta i {
            margin-right: 4px;
            color: var(--primary-light);
        }

        /* ========== TOPIC TAGS ========== */
        .topic-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(20, 30, 55, 0.6);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 0.45rem 1.1rem;
            transition: all var(--transition-fast);
            cursor: default;
        }
        .topic-tag:hover {
            background: rgba(0, 194, 255, 0.1);
            border-color: var(--border-glass-hover);
            color: var(--primary-light);
        }
        .topic-tag .count {
            font-family: var(--font-num);
            font-size: 0.75rem;
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.1);
            border-radius: var(--radius-pill);
            padding: 0.1rem 0.55rem;
        }

        /* ========== STATS ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin: 2rem 0;
        }
        .stat-card {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.2rem 1rem;
            text-align: center;
            transition: all var(--transition-med);
        }
        .stat-card:hover {
            border-color: var(--border-glass-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 26px rgba(0, 0, 0, 0.4), 0 0 12px rgba(0, 194, 255, 0.2);
        }
        .stat-card .stat-num {
            font-family: var(--font-num);
            font-size: 1.8rem;
            font-weight: 700;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-top: 0.3rem;
        }

        /* ========== RULES CARD ========== */
        .rule-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rule-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            padding: 0.7rem 1rem;
            background: rgba(20, 30, 55, 0.45);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--primary-light);
        }
        .rule-list li i {
            color: var(--primary-light);
            font-size: 1rem;
            margin-top: 0.25rem;
            flex-shrink: 0;
        }

        /* ========== PLAYER VOICES ========== */
        .voice-card {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.4rem 1.2rem;
            transition: all var(--transition-med);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .voice-card:hover {
            border-color: var(--border-glass-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
        }
        .voice-card .voice-text {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 1rem;
            position: relative;
            padding-left: 1.2rem;
        }
        .voice-card .voice-text::before {
            content: '\201C';
            font-size: 2rem;
            color: var(--primary-light);
            opacity: 0.6;
            position: absolute;
            left: -0.5rem;
            top: -0.5rem;
            line-height: 1;
        }
        .voice-card .voice-author {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 0.8rem;
            border-top: 1px solid rgba(110, 210, 255, 0.1);
        }
        .voice-card .voice-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            flex-shrink: 0;
        }
        .voice-card .voice-name {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .voice-card .voice-role {
            font-size: 0.75rem;
            color: var(--text-tertiary);
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-glass-hover);
        }
        .faq-item .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: transparent;
            border: none;
            padding: 1rem 1.3rem;
            font-family: var(--font-cn);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            text-align: left;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }
        .faq-item .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--primary-light);
            font-size: 0.9rem;
            transition: transform var(--transition-med);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-med);
            padding: 0 1.3rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.3rem 1.1rem;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(30, 111, 255, 0.12), rgba(0, 194, 255, 0.06));
            border-top: 1px solid rgba(110, 210, 255, 0.15);
            border-bottom: 1px solid rgba(110, 210, 255, 0.15);
        }
        .cta-panel {
            background: rgba(20, 30, 55, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 2.2rem 1.8rem;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-panel h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }
        .cta-panel p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            line-height: 1.8;
        }
        .cta-panel .btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .brand-intro-grid .brand-img {
            aspect-ratio: 4/3;
            overflow: hidden;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
        }
        .brand-intro-grid .brand-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .brand-intro-grid .brand-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
        }
        .brand-intro-grid .brand-text p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0.8rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(10, 15, 30, 0.95);
            border-top: 1px solid rgba(110, 210, 255, 0.15);
            padding: 3rem 0 1.6rem;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 2rem;
        }
        .footer-col .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.8rem;
        }
        .footer-col .footer-logo span {
            color: var(--primary-light);
        }
        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-tertiary);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-tertiary);
            margin-bottom: 0.5rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(110, 210, 255, 0.1);
            padding-top: 1.2rem;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-tertiary);
            margin-bottom: 0.3rem;
        }
        .footer-bottom .icp-info {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            justify-content: center;
            font-size: 0.78rem;
            color: var(--text-tertiary);
        }
        .footer-bottom a {
            font-size: 0.8rem;
            color: var(--text-tertiary);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .brand-intro-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.8rem 0;
                gap: 0;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 0.8rem;
                border-bottom: 1px solid rgba(110, 210, 255, 0.08);
                border-radius: 0;
            }
            .main-nav a::after {
                display: none;
            }
            .nav-cta {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 0.8rem 0;
                gap: 8px;
            }
            .nav-cta.open {
                display: flex;
            }
            .nav-toggle {
                display: inline-block;
            }
            section {
                padding: var(--section-pad-mobile) 0;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card .stat-num {
                font-size: 1.4rem;
            }
            .cat-hero {
                padding: 2.2rem 0 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom .icp-info {
                flex-direction: column;
                gap: 0.3rem;
            }
            .cta-panel {
                padding: 1.5rem 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr;
            }
            .brand-logo {
                font-size: 1rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
            }
            .btn {
                padding: 0.6rem 1.3rem;
                font-size: 0.85rem;
            }
            .cat-hero h1 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0A0F1E;
            --bg-secondary: #0D1428;
            --bg-card: rgba(20, 30, 55, 0.65);
            --bg-card-hover: rgba(24, 36, 68, 0.82);
            --primary: #1E6FFF;
            --primary-light: #00C2FF;
            --accent: #FF4D3A;
            --accent-pink: #FF2E88;
            --text-primary: #EAF3FF;
            --text-secondary: rgba(234, 243, 255, 0.68);
            --text-tertiary: rgba(234, 243, 255, 0.42);
            --border-glass: rgba(110, 210, 255, 0.22);
            --border-glass-hover: rgba(0, 194, 255, 0.55);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 10px rgba(0, 194, 255, 0.35);
            --shadow-glow-hover: 0 0 18px rgba(0, 194, 255, 0.55);
            --shadow-inner-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --transition-fast: 0.2s ease;
            --transition-med: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-num: "DIN", "Roboto Condensed", "Bahnschrift", "Arial Narrow", sans-serif;
            --container-max: 1200px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 44px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover,
        a:focus {
            color: #66d9ff;
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--section-pad-desktop) 0;
            position: relative;
        }

        section:nth-of-type(even) {
            background-color: rgba(13, 20, 40, 0.55);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            text-transform: uppercase;
            margin-bottom: 0.6rem;
            border: 1px solid rgba(0, 194, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.9rem;
            background: rgba(0, 194, 255, 0.07);
        }

        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            margin-bottom: 0.4rem;
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.3;
        }

        .section-sub {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .section-title-wrap {
            margin-bottom: 1.5rem;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-cn);
            font-size: 0.92rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 0.7rem 1.7rem;
            cursor: pointer;
            transition: all var(--transition-med);
            border: none;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            color: #ffffff;
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(0, 194, 255, 0.35);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #2a7bff, #26cdff);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-1px);
            color: #ffffff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .btn-ghost {
            background: transparent;
            color: var(--primary-light);
            border: 1px solid var(--border-glass);
            box-shadow: none;
        }

        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(0, 194, 255, 0.08);
            border-color: var(--border-glass-hover);
            color: #66d9ff;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: linear-gradient(135deg, #FF4D3A, #FF2E88);
            color: #ffffff;
            box-shadow: 0 0 10px rgba(255, 77, 58, 0.35);
            border: 1px solid rgba(255, 77, 58, 0.3);
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: linear-gradient(135deg, #ff6150, #ff4599);
            box-shadow: 0 0 18px rgba(255, 77, 58, 0.5);
            transform: translateY(-1px);
            color: #ffffff;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(10, 15, 30, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(110, 210, 255, 0.15);
            padding: 0 0;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
            flex-wrap: nowrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-primary);
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo:hover,
        .logo:focus {
            color: var(--text-primary);
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(0, 194, 255, 0.4);
        }

        .logo span {
            color: var(--primary-light);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.9rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #DCE9FF;
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
        }

        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.1);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
            box-shadow: 0 0 6px rgba(0, 194, 255, 0.6);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-cta .btn {
            padding: 0.5rem 1.2rem;
            font-size: 0.82rem;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 0.4rem 0.6rem;
            border-radius: 8px;
            transition: background var(--transition-fast);
        }

        .hamburger:hover {
            background: rgba(0, 194, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 15, 30, 0.97);
            z-index: 998;
            padding: 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 0.8rem 1rem;
            font-size: 1rem;
            color: var(--text-primary);
            border-radius: 10px;
            border: 1px solid rgba(110, 210, 255, 0.1);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(0, 194, 255, 0.1);
            color: var(--primary-light);
            border-color: var(--border-glass-hover);
        }

        .mobile-menu .nav-cta-mobile {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(110, 210, 255, 0.15);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: rgba(13, 20, 40, 0.6);
            border-bottom: 1px solid rgba(110, 210, 255, 0.1);
            padding: 1rem 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--text-tertiary);
            margin: 0 2px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--primary-light);
        }

        .breadcrumb .current {
            color: var(--primary-light);
            font-weight: 500;
        }

        /* ========== CATEGORY BANNER ========== */
        .category-banner {
            padding: 2.5rem 0 1.5rem;
            background: linear-gradient(180deg, rgba(13, 20, 40, 0.8) 0%, rgba(10, 15, 30, 0.4) 100%);
            border-bottom: 1px solid rgba(110, 210, 255, 0.08);
        }

        .category-banner .banner-content {
            max-width: 800px;
        }

        .category-banner h1 {
            font-size: clamp(1.6rem, 3.5vw, 2.3rem);
            font-weight: 750;
            color: var(--text-primary);
            line-height: 1.3;
            margin: 0.8rem 0 0.5rem;
            letter-spacing: -0.01em;
        }

        .category-banner .banner-desc {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
            max-width: 600px;
        }

        .category-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 1rem;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.75rem;
            color: var(--text-secondary);
            border: 1px solid rgba(110, 210, 255, 0.2);
            border-radius: var(--radius-pill);
            padding: 0.2rem 0.7rem;
            background: rgba(20, 30, 55, 0.6);
            transition: all var(--transition-fast);
        }

        .banner-tag i {
            color: var(--primary-light);
            font-size: 0.65rem;
        }

        /* ========== STATS OVERVIEW ========== */
        .stats-strip {
            padding: 1.8rem 0;
        }

        .stats-strip .grid-x {
            gap: 16px;
        }

        .stat-mini-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 1.2rem 1.4rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            box-shadow: var(--shadow-inner-highlight);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition-med);
        }

        .stat-mini-card:hover {
            border-color: var(--border-glass-hover);
            box-shadow: 0 0 18px rgba(0, 194, 255, 0.2);
            transform: translateY(-2px);
        }

        .stat-mini-card .stat-num {
            font-family: var(--font-num);
            font-size: 2rem;
            font-weight: 700;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-mini-card .stat-label {
            font-size: 0.78rem;
            color: var(--text-tertiary);
            margin-top: 0.3rem;
        }

        /* ========== GUIDE CARDS ========== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            box-shadow: var(--shadow-inner-highlight);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition-med);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            border-color: var(--border-glass-hover);
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45), 0 0 18px rgba(0, 194, 255, 0.2);
        }

        .guide-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: rgba(20, 30, 55, 0.8);
        }

        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .guide-card:hover .card-img img {
            transform: scale(1.05);
        }

        .guide-card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.72rem;
            font-weight: 600;
            color: #fff;
            background: rgba(10, 15, 30, 0.75);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.7rem;
            border: 1px solid rgba(0, 194, 255, 0.35);
            backdrop-filter: blur(6px);
        }

        .guide-card .card-body {
            padding: 1.2rem 1.4rem 1.4rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .guide-card .card-title {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .guide-card .card-summary {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .guide-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-tertiary);
            border-top: 1px solid rgba(110, 210, 255, 0.1);
            padding-top: 0.8rem;
        }

        .guide-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .guide-card .card-meta i {
            font-size: 0.7rem;
            color: var(--primary-light);
        }

        /* ========== TAG CLOUD ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid rgba(110, 210, 255, 0.2);
            border-radius: var(--radius-pill);
            padding: 0.4rem 1.1rem;
            background: rgba(20, 30, 55, 0.5);
            cursor: pointer;
            transition: all var(--transition-med);
            text-decoration: none;
        }

        .tag-btn:hover,
        .tag-btn:focus {
            color: var(--primary-light);
            border-color: var(--border-glass-hover);
            background: rgba(0, 194, 255, 0.1);
            box-shadow: 0 0 10px rgba(0, 194, 255, 0.2);
        }

        .tag-btn.hot {
            color: #fff;
            border-color: rgba(255, 77, 58, 0.4);
            background: rgba(255, 77, 58, 0.15);
        }

        .tag-btn.hot:hover {
            border-color: rgba(255, 77, 58, 0.7);
            background: rgba(255, 77, 58, 0.25);
            color: #fff;
            box-shadow: 0 0 10px rgba(255, 77, 58, 0.3);
        }

        /* ========== VERSION TIMELINE ========== */
        .version-timeline {
            position: relative;
            padding-left: 28px;
        }

        .version-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, rgba(0, 194, 255, 0.4), rgba(110, 210, 255, 0.1));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 1.8rem;
            padding-left: 0;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary-light);
            box-shadow: 0 0 12px rgba(0, 194, 255, 0.7);
            border: 2px solid rgba(10, 15, 30, 0.9);
        }

        .timeline-item .tl-version {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 0.2rem;
        }

        .timeline-item .tl-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.3rem;
        }

        .timeline-item .tl-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== TOPIC ENTRY ========== */
        .topic-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .topic-entry-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            box-shadow: var(--shadow-inner-highlight);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition-med);
            display: flex;
            align-items: flex-start;
            gap: 14px;
            text-decoration: none;
        }

        .topic-entry-card:hover {
            border-color: var(--border-glass-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4), 0 0 14px rgba(0, 194, 255, 0.18);
        }

        .topic-entry-card .entry-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(30, 111, 255, 0.2), rgba(0, 194, 255, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--primary-light);
            flex-shrink: 0;
            border: 1px solid rgba(0, 194, 255, 0.25);
        }

        .topic-entry-card .entry-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 0.3rem;
        }

        .topic-entry-card .entry-info p {
            font-size: 0.8rem;
            color: var(--text-tertiary);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-inner-highlight);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: border-color var(--transition-med);
        }

        .faq-item:hover {
            border-color: rgba(0, 194, 255, 0.35);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 1.1rem 1.4rem;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 600;
            font-family: var(--font-cn);
            cursor: pointer;
            text-align: left;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--primary-light);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(0, 194, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--primary-light);
            transition: all var(--transition-med);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: rgba(0, 194, 255, 0.25);
        }

        .faq-answer {
            padding: 0 1.4rem 1.2rem;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ========== BRAND INTRO COMPACT ========== */
        .brand-compact {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 2.2rem;
            box-shadow: var(--shadow-card);
            box-shadow: var(--shadow-inner-highlight);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            display: flex;
            gap: 24px;
            align-items: center;
        }

        .brand-compact .brand-compact-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(0, 194, 255, 0.4);
        }

        .brand-compact .brand-compact-text h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 0.4rem;
        }

        .brand-compact .brand-compact-text p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(180deg, rgba(13, 20, 40, 0.7) 0%, rgba(10, 15, 30, 0.9) 100%);
            border-top: 1px solid rgba(110, 210, 255, 0.12);
            border-bottom: 1px solid rgba(110, 210, 255, 0.12);
        }

        .cta-card {
            max-width: 700px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2.8rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            box-shadow: var(--shadow-inner-highlight);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .cta-card h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 0.6rem;
        }

        .cta-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .cta-card .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(8, 12, 24, 0.85);
            border-top: 1px solid rgba(110, 210, 255, 0.12);
            padding: 3rem 0 1.5rem;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 2rem;
        }

        .footer-col .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .footer-col .footer-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 7px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: #fff;
            box-shadow: 0 0 10px rgba(0, 194, 255, 0.35);
        }

        .footer-col .footer-logo span {
            color: var(--primary-light);
        }

        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.8rem;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            text-decoration: none;
            margin-bottom: 0.5rem;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover,
        .footer-col a:focus {
            color: var(--primary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(110, 210, 255, 0.1);
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.78rem;
            color: var(--text-tertiary);
        }

        .footer-bottom .icp-info {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 0.4rem;
        }

        .footer-bottom .icp-info span {
            color: var(--text-tertiary);
        }

        .footer-bottom p {
            margin: 0.2rem 0;
        }

        .footer-bottom a {
            color: var(--text-tertiary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ========== RESPONSIVE ========== */
        @media screen and (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .topic-entry-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --section-pad-desktop: 48px;
                --section-pad-mobile: 36px;
            }

            section {
                padding: var(--section-pad-mobile) 0;
            }

            .site-header .container {
                height: 60px;
            }

            .main-nav {
                display: none;
            }

            .nav-cta .btn-ghost {
                display: none;
            }

            .hamburger {
                display: block;
            }

            .guide-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .topic-entry-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .brand-compact {
                flex-direction: column;
                text-align: center;
                padding: 1.8rem;
            }

            .cta-card {
                padding: 1.8rem 1.4rem;
            }

            .cta-card .cta-actions {
                flex-direction: column;
                gap: 10px;
            }

            .cta-card .cta-actions .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: center;
            }

            .footer-col .footer-logo {
                justify-content: center;
            }

            .footer-bottom .icp-info {
                flex-direction: column;
                gap: 4px;
            }

            .banner-tags {
                justify-content: center;
            }
        }

        @media screen and (max-width: 520px) {
            :root {
                --section-pad-mobile: 32px;
            }

            .container {
                padding: 0 14px;
            }

            .category-banner h1 {
                font-size: 1.4rem;
            }

            .stat-mini-card .stat-num {
                font-size: 1.5rem;
            }

            .guide-card .card-body {
                padding: 1rem 1.1rem 1.2rem;
            }

            .guide-card .card-title {
                font-size: 0.92rem;
            }

            .timeline-item {
                margin-bottom: 1.4rem;
            }

            .faq-question {
                font-size: 0.88rem;
                padding: 1rem 1.1rem;
            }

            .faq-answer {
                padding: 0 1.1rem 1rem;
                font-size: 0.82rem;
            }
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0A0F1E;
            --bg-secondary: #0D1428;
            --bg-card: rgba(20, 30, 55, 0.65);
            --bg-card-hover: rgba(24, 36, 68, 0.82);
            --primary: #1E6FFF;
            --primary-light: #00C2FF;
            --accent: #FF4D3A;
            --accent-pink: #FF2E88;
            --text-primary: #EAF3FF;
            --text-secondary: rgba(234, 243, 255, 0.68);
            --text-tertiary: rgba(234, 243, 255, 0.42);
            --border-glass: rgba(110, 210, 255, 0.22);
            --border-glass-hover: rgba(0, 194, 255, 0.55);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 10px rgba(0, 194, 255, 0.35);
            --shadow-glow-hover: 0 0 18px rgba(0, 194, 255, 0.55);
            --shadow-inner-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --transition-fast: 0.2s ease;
            --transition-med: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-num: "DIN", "Roboto Condensed", "Bahnschrift", "Arial Narrow", sans-serif;
            --container-max: 1200px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 44px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            margin: 0;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover,
        a:focus {
            color: #66d9ff;
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            color: var(--text-primary);
            line-height: 1.35;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: var(--section-pad-desktop) 0;
            position: relative;
        }

        section:nth-of-type(even) {
            background-color: rgba(13, 20, 40, 0.55);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            text-transform: uppercase;
            margin-bottom: 0.6rem;
            border: 1px solid rgba(0, 194, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.9rem;
            background: rgba(0, 194, 255, 0.07);
        }

        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            margin-bottom: 0.4rem;
            color: var(--text-primary);
            font-weight: 700;
        }

        .section-sub {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .section-title-wrap {
            margin-bottom: 1.5rem;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-cn);
            font-size: 0.92rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 0.7rem 1.7rem;
            cursor: pointer;
            transition: all var(--transition-med);
            border: none;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            color: #ffffff;
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(0, 194, 255, 0.35);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #2a7bff, #26cdff);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-1px);
            color: #ffffff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .btn-ghost {
            background: transparent;
            color: var(--primary-light);
            border: 1px solid var(--border-glass);
            box-shadow: none;
        }

        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(0, 194, 255, 0.08);
            border-color: var(--border-glass-hover);
            color: #66d9ff;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: linear-gradient(135deg, #FF4D3A, #FF2E88);
            color: #ffffff;
            box-shadow: 0 0 10px rgba(255, 77, 58, 0.35);
            border: 1px solid rgba(255, 77, 58, 0.3);
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: linear-gradient(135deg, #ff6150, #ff4599);
            box-shadow: 0 0 18px rgba(255, 77, 58, 0.5);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-sm {
            padding: 0.5rem 1.2rem;
            font-size: 0.82rem;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(10, 15, 30, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(110, 210, 255, 0.15);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo:hover,
        .brand-logo:focus {
            color: var(--text-primary);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #1E6FFF, #00C2FF);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            color: #fff;
            box-shadow: 0 0 12px rgba(0, 194, 255, 0.4);
            flex-shrink: 0;
        }

        .brand-logo span {
            color: var(--primary-light);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .main-nav a {
            font-size: 0.9rem;
            font-weight: 500;
            color: #DCE9FF;
            padding: 0.5rem 0.85rem;
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.07);
        }

        .main-nav a.active {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 194, 255, 0.3);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
            box-shadow: 0 0 6px rgba(0, 194, 255, 0.6);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            width: 42px;
            height: 42px;
            border-radius: var(--radius-md);
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-toggle:hover {
            background: rgba(0, 194, 255, 0.08);
            border-color: var(--border-glass-hover);
        }

        .mobile-menu {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 4px;
            padding: 12px 0 16px;
            border-top: 1px solid rgba(110, 210, 255, 0.1);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            color: #DCE9FF;
            padding: 0.65rem 0.5rem;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary-light);
            background: rgba(0, 194, 255, 0.07);
        }

        .mobile-menu .nav-cta-mobile {
            display: flex;
            gap: 10px;
            margin-top: 8px;
            flex-wrap: wrap;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            padding: 1.2rem 0 0.5rem;
            background: transparent;
            font-size: 0.85rem;
            color: var(--text-tertiary);
        }

        .breadcrumb-bar a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .breadcrumb-bar a:hover,
        .breadcrumb-bar a:focus {
            color: var(--primary-light);
        }

        .breadcrumb-bar .separator {
            margin: 0 0.5rem;
            color: var(--text-tertiary);
        }

        .breadcrumb-bar .current {
            color: var(--primary-light);
        }

        /* ========== CATEGORY BANNER ========== */
        .category-banner {
            padding: 2.5rem 0 2rem;
            background: linear-gradient(135deg, rgba(30, 111, 255, 0.08), rgba(0, 194, 255, 0.04));
            border-bottom: 1px solid rgba(110, 210, 255, 0.12);
            position: relative;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 194, 255, 0.12), transparent 65%);
            pointer-events: none;
        }

        .category-banner h1 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 750;
            margin-bottom: 0.5rem;
            text-align: left;
        }

        .category-banner .banner-desc {
            font-size: 0.98rem;
            color: var(--text-secondary);
            max-width: 620px;
            text-align: left;
            line-height: 1.75;
        }

        /* ========== BRAND NEWS CARDS ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

        .news-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-med);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .news-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glass-hover);
            background: var(--bg-card-hover);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45), 0 0 18px rgba(0, 194, 255, 0.2);
        }

        .news-card .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background: rgba(13, 20, 40, 0.7);
        }

        .news-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .news-card:hover .card-img img {
            transform: scale(1.04);
        }

        .news-card .card-body {
            padding: 1.3rem 1.4rem 1.2rem;
        }

        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-tertiary);
            margin-bottom: 0.55rem;
            flex-wrap: wrap;
        }

        .news-card .card-meta .tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--primary-light);
            border: 1px solid rgba(0, 194, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 0.15rem 0.7rem;
            background: rgba(0, 194, 255, 0.07);
        }

        .news-card h3 {
            font-size: 1.05rem;
            font-weight: 650;
            margin-bottom: 0.55rem;
            line-height: 1.45;
        }

        .news-card h3 a {
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

        .news-card h3 a:hover,
        .news-card h3 a:focus {
            color: var(--primary-light);
        }

        .news-card .card-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0.8rem;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .card-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .news-card .card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }

        .news-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ========== TIMELINE ========== */
        .timeline {
            position: relative;
            padding-left: 30px;
            max-width: 780px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, rgba(0, 194, 255, 0.5), rgba(30, 111, 255, 0.3));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding: 0 0 2rem 1.2rem;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 14px;
            height: 14px;
            background: var(--bg-primary);
            border: 3px solid var(--primary-light);
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(0, 194, 255, 0.55);
        }

        .timeline-item .tl-date {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            letter-spacing: 0.03em;
            margin-bottom: 0.3rem;
        }

        .timeline-item h3 {
            font-size: 1.02rem;
            font-weight: 650;
            margin-bottom: 0.3rem;
        }

        .timeline-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== ANNOUNCEMENT CARDS ========== */
        .announcement-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 820px;
        }

        .announcement-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 1rem 1.3rem;
            transition: all var(--transition-med);
            box-shadow: var(--shadow-card);
        }

        .announcement-item:hover {
            border-color: var(--border-glass-hover);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }

        .announcement-item .icon-wrap {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(30, 111, 255, 0.25), rgba(0, 194, 255, 0.15));
            border: 1px solid rgba(0, 194, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--primary-light);
        }

        .announcement-item .ann-content {
            flex: 1;
            min-width: 0;
        }

        .announcement-item .ann-title {
            font-size: 0.92rem;
            font-weight: 600;
            margin-bottom: 0.15rem;
        }

        .announcement-item .ann-desc {
            font-size: 0.82rem;
            color: var(--text-tertiary);
            margin-bottom: 0;
        }

        .announcement-item .ann-badge {
            font-size: 0.72rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, #FF4D3A, #FF2E88);
            border-radius: var(--radius-pill);
            padding: 0.2rem 0.75rem;
            flex-shrink: 0;
        }

        /* ========== BRAND INTRO COMPACT ========== */
        .brand-intro-compact {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 36px;
            align-items: center;
        }

        .brand-intro-compact .bi-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            aspect-ratio: 16/10;
        }

        .brand-intro-compact .bi-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .brand-intro-compact .bi-text h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }

        .brand-intro-compact .bi-text p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .brand-intro-compact .bi-text .btn {
            margin-top: 0.25rem;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-med);
            box-shadow: var(--shadow-card);
        }

        .faq-item:hover {
            border-color: var(--border-glass-hover);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-family: var(--font-cn);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 1rem 1.3rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            text-align: left;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--primary-light);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--primary-light);
            transition: transform var(--transition-med);
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 1.3rem;
        }

        .faq-item.active .faq-answer {
            max-height: 280px;
            padding: 0 1.3rem 1.1rem;
        }

        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ========== CTA FORM ========== */
        .cta-form-section {
            background: linear-gradient(135deg, rgba(30, 111, 255, 0.06), rgba(0, 194, 255, 0.03));
        }

        .cta-form-card {
            max-width: 640px;
            margin: 0 auto;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 2.4rem 2.5rem;
            box-shadow: var(--shadow-card), 0 0 24px rgba(0, 194, 255, 0.08);
            text-align: center;
        }

        .cta-form-card h2 {
            font-size: 1.55rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .cta-form-card .cta-sub {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 1.8rem;
            line-height: 1.7;
        }

        .cta-form-card .form-group {
            text-align: left;
            margin-bottom: 1.1rem;
        }

        .cta-form-card label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 0.35rem;
        }

        .cta-form-card input,
        .cta-form-card select {
            width: 100%;
            padding: 0.75rem 1rem;
            background: rgba(10, 15, 30, 0.7);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            font-family: var(--font-cn);
            font-size: 0.92rem;
            transition: all var(--transition-fast);
            appearance: none;
            -webkit-appearance: none;
            outline: none;
        }

        .cta-form-card input::placeholder {
            color: var(--text-tertiary);
        }

        .cta-form-card input:focus,
        .cta-form-card select:focus {
            border-color: var(--border-glass-hover);
            box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.15);
            background: rgba(10, 15, 30, 0.85);
        }

        .cta-form-card select {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2300C2FF' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            padding-right: 2.5rem;
            cursor: pointer;
        }

        .cta-form-card select option {
            background: #0D1428;
            color: var(--text-primary);
        }

        .cta-form-card .btn {
            width: 100%;
            margin-top: 0.5rem;
            padding: 0.85rem 1.7rem;
            font-size: 1rem;
        }

        .cta-form-card .form-note {
            font-size: 0.78rem;
            color: var(--text-tertiary);
            margin-top: 0.9rem;
            margin-bottom: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(8, 12, 24, 0.9);
            border-top: 1px solid rgba(110, 210, 255, 0.14);
            padding: 3.5rem 0 1.8rem;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 2.5rem;
        }

        .footer-col .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.8rem;
        }

        .footer-col .footer-logo span {
            color: var(--primary-light);
        }

        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 0.92rem;
            font-weight: 700;
            margin-bottom: 0.9rem;
            color: var(--text-primary);
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
            transition: all var(--transition-fast);
        }

        .footer-col a:hover,
        .footer-col a:focus {
            color: var(--primary-light);
        }

        .footer-bottom {
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-tertiary);
            border-top: 1px solid rgba(110, 210, 255, 0.1);
            padding-top: 1.5rem;
        }

        .footer-bottom .icp-info {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

        .footer-bottom a:hover,
        .footer-bottom a:focus {
            color: var(--primary-light);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .main-nav a {
                padding: 0.45rem 0.6rem;
                font-size: 0.83rem;
            }

            .nav-cta .btn {
                padding: 0.5rem 1rem;
                font-size: 0.82rem;
            }

            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (max-width: 800px) {
            .site-header .container {
                flex-wrap: nowrap;
            }

            .main-nav {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .mobile-menu {
                display: none;
            }

            .mobile-menu.open {
                display: flex;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .brand-intro-compact {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .news-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            section {
                padding: var(--section-pad-mobile) 0;
            }

            .news-grid {
                grid-template-columns: 1fr;
            }

            .category-banner h1 {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom .icp-info {
                flex-direction: column;
                gap: 4px;
            }

            .cta-form-card {
                padding: 1.6rem 1.3rem;
            }

            .announcement-item {
                flex-wrap: wrap;
                gap: 10px;
            }

            .announcement-item .ann-badge {
                margin-left: auto;
            }
        }

        @media (max-width: 420px) {
            .timeline {
                padding-left: 24px;
            }
            .timeline::before {
                left: 6px;
            }
            .timeline-item::before {
                left: -22px;
                width: 12px;
                height: 12px;
                border-width: 2px;
            }
            .timeline-item {
                padding-left: 0.8rem;
            }
        }