/* roulang page: index */
:root {
            --bg-primary: #0A1128;
            --bg-secondary: #101B33;
            --brand-blue: #2B6BFF;
            --brand-cyan: #00D4FF;
            --accent-green: #A3E635;
            --gold: #E8B64C;
            --text-primary: rgba(255, 255, 255, 0.92);
            --text-secondary: rgba(255, 255, 255, 0.65);
            --text-muted: rgba(255, 255, 255, 0.40);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-bg-hover: rgba(255, 255, 255, 0.10);
            --glass-border-hover: rgba(255, 255, 255, 0.22);
            --radius-card: 18px;
            --radius-btn: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.35);
            --transition: all 0.35s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, sans-serif;
            background: linear-gradient(165deg, #0A1128 0%, #101B33 55%, #0D1526 100%);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 36px 36px;
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: relative;
            z-index: 100;
            padding: 18px 0 0;
        }
        .nav-panel {
            margin: 0 24px;
            border-radius: 20px;
            background: rgba(16, 27, 51, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.06);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            gap: 32px;
            padding: 14px 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, #2B6BFF, #00D4FF);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.45);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: rgba(255, 255, 255, 0.9);
        }
        .logo-text strong {
            font-weight: 800;
            background: linear-gradient(135deg, #4D8FFF, #00D4FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            font-weight: 500;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .nav-link svg {
            width: 18px;
            height: 18px;
            opacity: 0.8;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(43, 107, 255, 0.25), rgba(0, 212, 255, 0.15));
            border-color: rgba(0, 212, 255, 0.35);
            box-shadow: 0 0 14px rgba(0, 212, 255, 0.12);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-sub {
            padding: 14px 24px 4px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .capsule {
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .capsule:hover {
            color: #fff;
            border-color: rgba(0, 212, 255, 0.45);
            background: rgba(0, 212, 255, 0.08);
        }
        .capsule.active {
            color: #fff;
            background: rgba(0, 212, 255, 0.14);
            border-color: rgba(0, 212, 255, 0.4);
        }
        @media (max-width: 768px) {
            .nav-panel {
                margin: 0 12px;
            }
            .nav-inner {
                gap: 12px;
                padding: 12px 16px;
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .logo-text {
                font-size: 17px;
                white-space: nowrap;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
            }
            .nav-menu {
                gap: 4px;
                flex: 0 0 auto;
            }
            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
                white-space: nowrap;
            }
            .nav-link svg {
                width: 16px;
                height: 16px;
            }
            .nav-cta {
                display: none;
            }
            .nav-sub {
                padding: 10px 16px 2px;
                justify-content: flex-start;
                overflow-x: auto;
                flex-wrap: nowrap;
                -webkit-overflow-scrolling: touch;
            }
            .capsule {
                white-space: nowrap;
                flex-shrink: 0;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, #2B6BFF, #00D4FF);
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.35), 0 4px 16px rgba(43, 107, 255, 0.3);
        }
        .btn-primary:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 28px rgba(0, 212, 255, 0.5), 0 6px 20px rgba(43, 107, 255, 0.4);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 14px rgba(0, 212, 255, 0.3);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.25);
            color: rgba(255, 255, 255, 0.9);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-2px);
        }
        .btn-lg {
            height: 54px;
            padding: 0 36px;
            font-size: 16px;
        }
        .btn-sm {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: 10px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            border-radius: 0 0 28px 28px;
            background-size: cover;
            background-position: center 20%;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 17, 40, 0.92) 0%, rgba(10, 17, 40, 0.72) 45%, rgba(16, 27, 51, 0.35) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
            padding: 80px 24px 100px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 18px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 999px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(8px);
            margin-bottom: 24px;
        }
        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-green);
            box-shadow: 0 0 8px var(--accent-green);
        }
        .hero h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }
        .hero h1 .brand-grad {
            background: linear-gradient(135deg, #4D8FFF, #00D4FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 36px;
            max-width: 480px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-right {
            position: relative;
            border-radius: 22px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
            transition: var(--transition);
        }
        .hero-right:hover {
            transform: perspective(1200px) rotateY(-2deg) rotateX(0deg) translateY(-4px);
        }
        .hero-right img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .hero-right::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10, 17, 40, 0.5));
        }
        .hero-ticker {
            position: absolute;
            bottom: 24px;
            left: 0;
            right: 0;
            z-index: 3;
            overflow: hidden;
            padding: 12px 0;
            background: rgba(10, 17, 40, 0.55);
            backdrop-filter: blur(10px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .ticker-track {
            display: flex;
            gap: 48px;
            white-space: nowrap;
            animation: tickerScroll 32s linear infinite;
            padding-left: 24px;
        }
        .ticker-track span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            font-family: 'SF Mono', 'Roboto Mono', Consolas, monospace;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .ticker-track span::before {
            content: '●';
            color: var(--accent-green);
            font-size: 8px;
        }
        @keyframes tickerScroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }
        @media (max-width: 768px) {
            .hero {
                min-height: auto;
                padding-bottom: 70px;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
                padding: 60px 16px 80px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-right {
                transform: none;
                max-width: 420px;
            }
            .hero-right:hover {
                transform: translateY(-4px);
            }
            .hero-right img {
                min-height: 200px;
            }
            .ticker-track {
                gap: 24px;
            }
        }

        /* ===== Stats ===== */
        .stats-section {
            padding: 60px 0 0;
            margin-top: -40px;
            position: relative;
            z-index: 5;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            backdrop-filter: blur(12px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(0, 212, 255, 0.25);
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
        }
        .stat-num {
            font-size: 32px;
            font-weight: 800;
            background: linear-gradient(135deg, #4D8FFF, #00D4FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-item {
                padding: 20px 16px;
            }
            .stat-num {
                font-size: 24px;
            }
        }

        /* ===== Section ===== */
        .section {
            padding: 70px 0;
            position: relative;
            z-index: 1;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 36px;
            gap: 20px;
            flex-wrap: wrap;
        }
        .section-title-wrap {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .section-title-bar {
            width: 5px;
            height: 30px;
            border-radius: 4px;
            background: linear-gradient(180deg, #2B6BFF, #00D4FF);
            box-shadow: 0 0 14px rgba(0, 212, 255, 0.4);
        }
        .section-title {
            font-size: 27px;
            font-weight: 800;
            letter-spacing: 0.5px;
        }
        .section-more {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .section-more:hover {
            color: var(--brand-cyan);
        }
        @media (max-width: 640px) {
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 22px;
            }
        }

        /* ===== Scroll Library ===== */
        .library-section {
            padding-top: 20px;
        }
        .card-scroll-wrap {
            position: relative;
        }
        .card-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding: 12px 4px 24px;
            -webkit-overflow-scrolling: touch;
        }
        .card-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .card-scroll::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.04);
            border-radius: 10px;
        }
        .card-scroll::-webkit-scrollbar-thumb {
            background: rgba(0, 212, 255, 0.3);
            border-radius: 10px;
        }
        .media-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
            transition: var(--transition);
        }
        .media-card:hover {
            transform: translateY(-4px);
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-hover);
        }
        .media-cover {
            position: relative;
            height: 170px;
            overflow: hidden;
        }
        .media-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .media-card:hover .media-cover img {
            transform: scale(1.04);
        }
        .media-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(10, 17, 40, 0.65));
        }
        .media-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(163, 230, 53, 0.2);
            border: 1px solid rgba(163, 230, 53, 0.4);
            color: var(--accent-green);
            backdrop-filter: blur(8px);
        }
        .media-info {
            padding: 18px;
        }
        .media-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 8px;
            color: rgba(255, 255, 255, 0.92);
            display: block;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .media-meta {
            display: flex;
            gap: 10px;
            font-size: 12px;
            color: var(--text-secondary);
        }
        .media-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .media-hover-btn {
            position: absolute;
            bottom: 14px;
            right: 14px;
            z-index: 3;
            opacity: 0;
            transform: translateY(8px);
            transition: var(--transition);
            padding: 7px 16px;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            backdrop-filter: blur(8px);
        }
        .media-card:hover .media-hover-btn {
            opacity: 1;
            transform: translateY(0);
        }
        @media (max-width: 640px) {
            .media-card {
                flex-basis: 240px;
            }
            .media-cover {
                height: 140px;
            }
        }

        /* ===== Hot ===== */
        .hot-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 24px;
        }
        .feature-card {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: flex-end;
            background-size: cover;
            background-position: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .feature-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.1) 0%, rgba(10, 17, 40, 0.82) 85%);
        }
        .feature-content {
            position: relative;
            z-index: 2;
            padding: 32px;
            width: 100%;
        }
        .feature-rank {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-green);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 10px;
        }
        .feature-rank::before {
            content: '#1';
            background: rgba(163, 230, 53, 0.2);
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
        }
        .feature-title {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .feature-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 20px;
            max-width: 320px;
        }
        .feature-btns {
            display: flex;
            gap: 12px;
        }
        .hot-right {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .list-card {
            display: flex;
            gap: 14px;
            align-items: center;
            padding: 14px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            backdrop-filter: blur(12px);
            transition: var(--transition);
            cursor: pointer;
        }
        .list-card:hover {
            background: var(--glass-bg-hover);
            border-color: var(--glass-border-hover);
            transform: translateX(4px);
        }
        .list-cover {
            width: 90px;
            height: 68px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            position: relative;
            background: rgba(255, 255, 255, 0.06);
        }
        .list-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .list-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent, rgba(10, 17, 40, 0.3));
        }
        .list-info {
            flex: 1;
            min-width: 0;
        }
        .list-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .list-excerpt {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .list-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 6px;
        }
        .list-tag {
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(163, 230, 53, 0.15);
            border: 1px solid rgba(163, 230, 53, 0.25);
            color: var(--accent-green);
        }
        .list-time {
            font-size: 12px;
            color: var(--text-muted);
        }
        .list-rank {
            font-size: 22px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.14);
            flex-shrink: 0;
            padding: 0 8px;
            font-family: 'SF Mono', Consolas, monospace;
        }
        .list-card:nth-child(1) .list-rank {
            color: rgba(163, 230, 53, 0.5);
        }
        .list-card:nth-child(2) .list-rank {
            color: rgba(0, 212, 255, 0.4);
        }
        @media (max-width: 1024px) {
            .hot-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                min-height: 320px;
            }
        }
        @media (max-width: 640px) {
            .feature-title {
                font-size: 20px;
            }
            .feature-content {
                padding: 20px;
            }
            .list-cover {
                width: 70px;
                height: 60px;
            }
            .list-title {
                font-size: 14px;
            }
            .list-excerpt {
                display: none;
            }
        }

        /* ===== Topics ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .topic-card {
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            backdrop-filter: blur(14px);
            transition: var(--transition);
            cursor: pointer;
        }
        .topic-card:hover {
            transform: translateY(-4px);
            background: var(--glass-bg-hover);
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-hover);
        }
        .topic-card-large .topic-cover {
            height: 210px;
        }
        .topic-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .topic-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .topic-card:hover .topic-cover img {
            transform: scale(1.04);
        }
        .topic-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(10, 17, 40, 0.7));
        }
        .topic-body {
            padding: 22px;
            position: relative;
        }
        .topic-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }
        .topic-icon.football {
            background: linear-gradient(135deg, rgba(43, 107, 255, 0.4), rgba(0, 212, 255, 0.2));
            border: 1px solid rgba(0, 212, 255, 0.3);
        }
        .topic-icon.basketball {
            background: linear-gradient(135deg, rgba(255, 149, 0, 0.35), rgba(255, 77, 77, 0.2));
            border: 1px solid rgba(255, 149, 0, 0.3);
        }
        .topic-icon.esports {
            background: linear-gradient(135deg, rgba(163, 230, 53, 0.3), rgba(0, 212, 255, 0.15));
            border: 1px solid rgba(163, 230, 53, 0.3);
        }
        .topic-icon.default {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .topic-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .topic-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }
        .topic-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .topic-tags span {
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
        }
        .topic-row-second {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 24px;
        }
        .topic-card-small .topic-cover {
            height: 130px;
        }
        .topic-card-small .topic-body {
            padding: 16px;
        }
        .topic-card-small .topic-title {
            font-size: 15px;
        }
        .topic-card-small .topic-desc {
            font-size: 13px;
        }
        @media (max-width: 1024px) {
            .topic-row-second {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .topic-row-second {
                grid-template-columns: 1fr;
            }
            .topic-card-large .topic-cover {
                height: 170px;
            }
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            border-radius: 24px;
            padding: 70px 40px;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
            margin: 20px 0;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 17, 40, 0.9), rgba(16, 27, 51, 0.65));
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 560px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-sub {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 30px;
            line-height: 1.8;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 640px) {
            .cta-banner {
                padding: 50px 20px;
            }
            .cta-title {
                font-size: 24px;
            }
        }

        /* ===== News ===== */
        .news-layout {
            display: grid;
            grid-template-columns: 1.75fr 1fr;
            gap: 40px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            padding: 22px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            backdrop-filter: blur(12px);
            transition: var(--transition);
            cursor: pointer;
        }
        .news-item:hover {
            background: var(--glass-bg-hover);
            border-color: var(--glass-border-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }
        .news-item-main {
            flex: 1;
            min-width: 0;
        }
        .news-badge {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(0, 212, 255, 0.16);
            border: 1px solid rgba(0, 212, 255, 0.3);
            color: var(--brand-cyan);
            margin-bottom: 10px;
        }
        .news-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: rgba(255, 255, 255, 0.92);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-time {
            font-size: 13px;
            color: var(--text-muted);
            flex-shrink: 0;
            padding-top: 6px;
            font-family: 'SF Mono', Consolas, monospace;
        }
        .news-more {
            margin-top: 10px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: var(--brand-cyan);
            opacity: 0;
            transition: var(--transition);
        }
        .news-item:hover .news-more {
            opacity: 1;
        }
        .news-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .news-tags {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 18px;
            padding: 24px;
            backdrop-filter: blur(12px);
        }
        .news-tags h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-pill {
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: pointer;
        }
        .tag-pill:hover {
            border-color: rgba(0, 212, 255, 0.4);
            color: #fff;
            background: rgba(0, 212, 255, 0.1);
        }
        .empty-state {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 60px 20px;
            border-radius: 18px;
            background: var(--glass-bg);
            border: 1px dashed var(--glass-border);
            color: var(--text-secondary);
        }
        .empty-state svg {
            width: 48px;
            height: 48px;
            margin-bottom: 16px;
            opacity: 0.4;
        }
        @media (max-width: 1024px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 640px) {
            .news-item {
                flex-direction: column;
                padding: 16px;
                gap: 10px;
            }
            .news-time {
                padding-top: 0;
            }
            .news-title {
                white-space: normal;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding-top: 0;
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            backdrop-filter: blur(12px);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.2);
        }
        .faq-item summary {
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            list-style: none;
            color: rgba(255, 255, 255, 0.9);
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: var(--transition);
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
            border-color: var(--brand-cyan);
            color: var(--brand-cyan);
        }
        .faq-item .faq-answer {
            padding: 0 26px 24px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.85;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 18px;
            margin-top: 0;
        }
        @media (max-width: 640px) {
            .faq-item summary {
                padding: 18px;
                font-size: 14px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 20px;
                font-size: 13px;
            }
        }

        /* ===== Final CTA ===== */
        .cta-final {
            text-align: center;
            padding: 80px 0 0;
        }
        .cta-final .cta-final-inner {
            background: linear-gradient(135deg, rgba(43, 107, 255, 0.15), rgba(0, 212, 255, 0.08));
            border: 1px solid rgba(0, 212, 255, 0.15);
            border-radius: 24px;
            padding: 60px 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-final-inner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1), transparent 50%);
            pointer-events: none;
        }
        .cta-final h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-final p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 30px;
        }
        @media (max-width: 640px) {
            .cta-final .cta-final-inner {
                padding: 40px 20px;
            }
            .cta-final h2 {
                font-size: 24px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            padding: 60px 0 30px;
            margin-top: 80px;
            background: rgba(8, 13, 30, 0.6);
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .footer-logo .logo-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--brand-cyan);
            box-shadow: 0 0 12px var(--brand-cyan);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            color: rgba(255, 255, 255, 0.9);
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--brand-cyan);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Mobile Bottom CTA ===== */
        .mobile-bottom-cta {
            display: none;
        }
        @media (max-width: 640px) {
            .mobile-bottom-cta {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                z-index: 50;
                padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
                background: rgba(10, 17, 40, 0.9);
                backdrop-filter: blur(16px);
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }
            .mobile-bottom-cta .btn {
                flex: 1;
                width: 100%;
            }
            body {
                padding-bottom: 0;
            }
            .site-footer {
                padding-bottom: 80px;
            }
        }

        /* ===== Focus Visible ===== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--brand-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }

/* roulang page: article */
:root {
    --bg-dark: #0A1128;
    --bg-deep: #101B33;
    --bg-mid: #0D1526;
    --bg-panel: rgba(255, 255, 255, 0.06);
    --bg-panel-hover: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.12);
    --border-hover: rgba(255, 255, 255, 0.22);
    --text-primary: #E8EEFF;
    --text-secondary: rgba(255, 255, 255, 0.68);
    --text-weak: rgba(255, 255, 255, 0.4);
    --accent-blue: #2B6BFF;
    --accent-cyan: #00D4FF;
    --accent-green: #A3E635;
    --radius-card: 18px;
    --radius-btn: 12px;
    --radius-capsule: 999px;
    --radius-input: 12px;
    --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35);
    --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.35);
    --font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-family);
    background: linear-gradient(160deg, var(--bg-dark) 0%, var(--bg-deep) 55%, var(--bg-mid) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.8;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style-position: inside; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 46px;
    padding: 0 26px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.5px;
    white-space: nowrap;
    transition: var(--transition);
    border: 1px solid transparent;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #fff;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}
.btn-primary:hover { filter: brightness(1.15); transform: translateY(-2px); box-shadow: 0 0 30px rgba(0, 212, 255, 0.5); }
.btn-primary:active { transform: translateY(0); filter: brightness(0.95); }
.btn-outline {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.25);
    color: var(--text-primary);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.16); border-color: rgba(255, 255, 255, 0.4); transform: translateY(-2px); }
.btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }

/* ===== Header / Nav ===== */
.site-header { padding: 16px 20px 0; position: relative; z-index: 50; }
.nav-panel {
    max-width: 1280px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(16, 27, 51, 0.85), rgba(10, 17, 40, 0.75));
    border: 1px solid var(--border-light);
    border-radius: 22px;
    padding: 12px 16px;
    box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.nav-inner { display: flex; align-items: center; gap: 16px; }
.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 14px 6px 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    transition: var(--transition);
    flex-shrink: 0;
}
.nav-logo:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(0, 212, 255, 0.4); }
.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(43, 107, 255, 0.8), rgba(0, 212, 255, 0.7));
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.25);
}
.logo-text { font-size: 15px; color: var(--text-primary); line-height: 1.2; white-space: nowrap; }
.logo-text strong { color: #fff; font-weight: 800; font-size: 17px; }
.nav-menu { display: flex; align-items: center; gap: 8px; flex: 1; overflow-x: auto; scrollbar-width: none; }
.nav-menu::-webkit-scrollbar { display: none; }
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--radius-capsule);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    white-space: nowrap;
    transition: var(--transition);
}
.nav-link svg { width: 16px; height: 16px; flex-shrink: 0; }
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.15); }
.nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(43, 107, 255, 0.3), rgba(0, 212, 255, 0.2));
    border-color: rgba(0, 212, 255, 0.45);
    box-shadow: 0 0 14px rgba(0, 212, 255, 0.18);
}
.nav-cta { flex-shrink: 0; }
.nav-sub {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    overflow-x: auto;
    scrollbar-width: none;
}
.nav-sub::-webkit-scrollbar { display: none; }
.capsule {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border-radius: var(--radius-capsule);
    font-size: 13px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    white-space: nowrap;
    transition: var(--transition);
}
.capsule:hover { color: #fff; background: rgba(255, 255, 255, 0.1); border-color: rgba(0, 212, 255, 0.35); }
.capsule.active { color: #fff; background: rgba(0, 212, 255, 0.12); border-color: rgba(0, 212, 255, 0.4); }

/* ===== Article Main ===== */
.article-container { max-width: 960px; padding-top: 36px; padding-bottom: 80px; }
.article-breadcrumb {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    margin-bottom: 20px; flex-wrap: wrap;
}
.back-link {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 18px;
    border-radius: var(--radius-capsule);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.back-link:hover { color: #fff; border-color: rgba(0, 212, 255, 0.5); background: rgba(255, 255, 255, 0.1); }
.back-link svg { width: 15px; height: 15px; }
.category-pill {
    display: inline-flex; align-items: center;
    padding: 6px 18px;
    border-radius: var(--radius-capsule);
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, rgba(43, 107, 255, 0.6), rgba(0, 212, 255, 0.4));
    border: 1px solid rgba(0, 212, 255, 0.4);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.15);
}
.article-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 22px;
    padding: 52px 56px;
    box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    position: relative;
}
.article-card::before {
    content: '';
    position: absolute; top: 0; left: 48px; right: 48px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
}
.article-title {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.4;
    color: #fff;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}
.article-meta {
    display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
    padding-bottom: 24px;
    margin-bottom: 32px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.meta-item {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 13px; color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.04);
    padding: 4px 14px;
    border-radius: var(--radius-capsule);
    border: 1px solid rgba(255, 255, 255, 0.07);
}
.meta-item svg { width: 14px; height: 14px; opacity: 0.7; }

/* ===== Article Content Body ===== */
.article-content { font-size: 16px; color: rgba(255, 255, 255, 0.85); }
.article-content p { margin: 0 0 24px; line-height: 2; }
.article-content h2 {
    font-size: 26px; font-weight: 700; color: #fff;
    margin: 40px 0 20px;
    padding-left: 16px;
    border-left: 4px solid var(--accent-cyan);
    box-shadow: -2px 0 14px rgba(0, 212, 255, 0.25);
    line-height: 1.5;
}
.article-content h3 {
    font-size: 20px; font-weight: 600; color: #fff;
    margin: 32px 0 16px;
    line-height: 1.5;
}
.article-content img {
    border-radius: 16px;
    margin: 28px 0;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
}
.article-content blockquote {
    margin: 28px 0;
    padding: 20px 24px;
    border-left: 4px solid var(--accent-cyan);
    background: rgba(0, 212, 255, 0.06);
    border-radius: 0 14px 14px 0;
    box-shadow: -2px 0 16px rgba(0, 212, 255, 0.12);
    color: rgba(255, 255, 255, 0.8);
    font-style: italic;
}
.article-content ul, .article-content ol { margin: 20px 0 24px; padding-left: 8px; }
.article-content li { margin-bottom: 10px; line-height: 1.9; }
.article-content a {
    color: var(--accent-cyan);
    border-bottom: 1px solid rgba(0, 212, 255, 0.3);
    padding-bottom: 1px;
}
.article-content a:hover { color: #fff; border-bottom-color: #fff; }
.article-content table {
    width: 100%; border-collapse: collapse; margin: 28px 0;
    border-radius: 12px; overflow: hidden;
    font-size: 14px;
}
.article-content table th {
    background: rgba(43, 107, 255, 0.2);
    color: #fff; padding: 12px 16px; text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.article-content table td {
    padding: 10px 16px; border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(255, 255, 255, 0.02);
}

/* ===== Not Found ===== */
.article-notfound {
    text-align: center;
    padding: 60px 30px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px dashed rgba(255, 255, 255, 0.12);
}
.notfound-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.6; }
.article-notfound p { font-size: 17px; color: var(--text-secondary); margin-bottom: 24px; }

/* ===== Tags / Toolbar ===== */
.article-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 16px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
    display: inline-flex; align-items: center;
    padding: 6px 16px;
    border-radius: var(--radius-capsule);
    font-size: 13px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}
.tag:hover { color: #fff; border-color: rgba(0, 212, 255, 0.5); background: rgba(0, 212, 255, 0.1); }

/* ===== Share ===== */
.article-share {
    display: flex; align-items: center; gap: 16px;
    margin-top: 24px;
    padding: 16px 24px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    flex-wrap: wrap;
}
.share-label { font-size: 14px; color: var(--text-secondary); }
.share-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-capsule);
    font-size: 13px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}
.share-btn:hover { color: #fff; background: rgba(255, 255, 255, 0.12); border-color: rgba(0, 212, 255, 0.4); }
.share-btn svg { width: 16px; height: 16px; }

/* ===== Related ===== */
.related-section { margin-top: 56px; }
.section-head { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.section-bar {
    width: 5px; height: 24px;
    border-radius: 3px;
    background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan));
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
}
.section-head h2 { font-size: 24px; font-weight: 700; color: #fff; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    display: block;
    border-radius: var(--radius-card);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}
.related-card:hover { transform: translateY(-4px); border-color: rgba(255, 255, 255, 0.22); box-shadow: var(--shadow-card-hover); }
.related-cover { position: relative; height: 180px; overflow: hidden; }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .related-cover img { transform: scale(1.04); }
.related-cover::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(10, 17, 40, 0.8));
}
.related-badge {
    position: absolute; top: 12px; left: 12px; z-index: 2;
    padding: 4px 12px;
    border-radius: var(--radius-capsule);
    font-size: 12px; font-weight: 600;
    color: #0A1128;
    background: linear-gradient(135deg, var(--accent-green), #D9F99D);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
.related-info { padding: 16px 18px 18px; }
.related-info h3 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 6px; line-height: 1.4; }
.related-info p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* ===== Footer ===== */
.site-footer { margin-top: 40px; padding: 16px 20px 32px; }
.site-footer .container { max-width: 1280px; }
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    padding: 44px 36px 32px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 22px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.footer-logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.logo-dot {
    width: 12px; height: 12px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.6);
}
.footer-brand p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; max-width: 360px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 6px; }
.footer-col a { font-size: 14px; color: var(--text-secondary); padding: 4px 0; }
.footer-col a:hover { color: var(--accent-cyan); padding-left: 4px; }
.footer-bottom {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
    padding: 20px 24px 0;
    font-size: 13px;
    color: var(--text-weak);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .article-card { padding: 40px 36px; }
    .article-title { font-size: 30px; }
}
@media (min-width: 768px) and (max-width: 1023px) {
    .nav-panel { padding: 10px 12px; }
    .nav-link { padding: 8px 14px; font-size: 13px; }
    .footer-grid { grid-template-columns: 1fr 1fr; padding: 36px 28px; }
    .article-container { max-width: 720px; }
}
@media (max-width: 640px) {
    .site-header { padding: 12px 12px 0; }
    .nav-panel { padding: 10px 10px; border-radius: 18px; }
    .nav-inner { gap: 8px; }
    .logo-text { font-size: 13px; }
    .logo-text strong { font-size: 15px; }
    .logo-icon { width: 30px; height: 30px; }
    .nav-link { padding: 7px 12px; font-size: 13px; gap: 4px; }
    .nav-link svg { width: 14px; height: 14px; }
    .nav-cta .btn-sm { height: 36px; padding: 0 14px; font-size: 13px; }
    .nav-sub { gap: 6px; }
    .capsule { padding: 5px 12px; font-size: 12px; }
    .container { padding: 0 16px; }
    .article-container { padding-top: 20px; padding-bottom: 60px; }
    .article-card { padding: 28px 20px; border-radius: 18px; }
    .article-title { font-size: 26px; line-height: 1.45; }
    .article-meta { gap: 8px; }
    .meta-item { font-size: 12px; padding: 3px 10px; }
    .article-content { font-size: 15px; }
    .article-content h2 { font-size: 21px; }
    .article-content h3 { font-size: 18px; }
    .article-toolbar { flex-direction: column; align-items: flex-start; }
    .article-share { padding: 14px 16px; }
    .related-grid { grid-template-columns: 1fr; }
    .related-cover { height: 160px; }
    .section-head h2 { font-size: 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 28px 20px; }
    .footer-bottom { flex-direction: column; gap: 4px; padding: 16px 16px 0; font-size: 12px; }
}

/* roulang page: category1 */
:root {
            --bg-dark: #0A1128;
            --bg-mid: #101B33;
            --primary: #2B6BFF;
            --cyan: #00D4FF;
            --green: #A3E635;
            --text-main: #ffffff;
            --text-dim: rgba(255, 255, 255, 0.65);
            --border-light: rgba(255, 255, 255, 0.12);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --card-radius: 18px;
            --card-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, sans-serif;
            background: linear-gradient(160deg, #0A1128 0%, #101B33 60%, #0A1128 100%);
            color: #fff;
            line-height: 1.8;
            min-height: 100vh;
            overflow-x: hidden;
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 2;
        }
        .container-sm {
            max-width: 920px;
        }
        .section {
            padding: 72px 0;
            position: relative;
            z-index: 2;
        }
        .pt-0 {
            padding-top: 0;
        }
        .pb-0 {
            padding-bottom: 0;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--card-radius);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--card-shadow);
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
            position: relative;
            overflow: hidden;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border: none;
            cursor: pointer;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #2B6BFF, #00D4FF);
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.35);
        }
        .btn-primary:hover {
            filter: brightness(1.12);
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.55);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-1px);
        }
        .btn-ghost:active {
            transform: translateY(1px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 10px;
        }
        .capsule {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: all .2s ease;
            white-space: nowrap;
            line-height: 1.4;
        }
        .capsule:hover {
            border-color: #00D4FF;
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }
        .capsule.active {
            background: rgba(163, 230, 53, 0.12);
            border-color: #A3E635;
            color: #A3E635;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1.6;
        }
        .badge-hot {
            background: linear-gradient(135deg, #A3E635, #7AC74F);
            color: #0A1128;
            box-shadow: 0 0 12px rgba(163, 230, 53, 0.3);
        }
        .badge-cyan {
            background: rgba(0, 212, 255, 0.15);
            color: #00D4FF;
            border: 1px solid rgba(0, 212, 255, 0.3);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 6px;
            letter-spacing: 0.5px;
            color: #fff;
        }
        .section-title::before {
            content: '';
            width: 4px;
            height: 22px;
            background: linear-gradient(180deg, #2B6BFF, #00D4FF);
            border-radius: 999px;
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
            flex-shrink: 0;
        }
        .section-sub {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            margin-bottom: 36px;
            padding-left: 16px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 16px 20px 0;
        }
        .nav-panel {
            background: rgba(10, 17, 40, 0.78);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
            padding: 12px 16px 10px;
            max-width: 1280px;
            margin: 0 auto;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            text-decoration: none;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #2B6BFF, #00D4FF);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.35);
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 16px;
            color: #fff;
            line-height: 1.3;
            letter-spacing: 0.3px;
        }
        .logo-text strong {
            color: #00D4FF;
            font-weight: 700;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 10px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 16px;
            border-radius: 999px;
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            font-size: 14px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all .2s ease;
            white-space: nowrap;
        }
        .nav-link svg {
            width: 17px;
            height: 17px;
            flex-shrink: 0;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(0, 212, 255, 0.4);
        }
        .nav-link.active {
            background: linear-gradient(135deg, rgba(43, 107, 255, 0.35), rgba(0, 212, 255, 0.22));
            border-color: rgba(0, 212, 255, 0.6);
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.2);
            color: #fff;
        }
        .nav-cta .btn {
            font-size: 14px;
            padding: 9px 20px;
        }
        .nav-sub {
            display: flex;
            gap: 8px;
            margin-top: 12px;
            overflow-x: auto;
            padding-bottom: 2px;
            -webkit-overflow-scrolling: touch;
        }
        .nav-sub::-webkit-scrollbar {
            display: none;
        }
        .category-hero {
            position: relative;
            border-radius: 24px;
            margin-top: 24px;
            background: linear-gradient(105deg, rgba(10, 17, 40, 0.96) 0%, rgba(10, 17, 40, 0.78) 45%, rgba(10, 17, 40, 0.45) 100%);
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.5;
            z-index: -1;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 85% 30%, rgba(0, 212, 255, 0.2) 0%, transparent 50%),
                linear-gradient(120deg, rgba(43, 107, 255, 0.25) 0%, transparent 60%);
            z-index: -1;
        }
        .hero-inner {
            min-height: 45vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 80px 0 56px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            width: fit-content;
            padding: 7px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(12px);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 20px;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.2);
        }
        .hero-badge svg {
            width: 16px;
            height: 16px;
            color: #A3E635;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 1px;
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }
        .category-hero h1 span {
            color: #00D4FF;
        }
        .category-hero .hero-desc {
            max-width: 520px;
            font-size: 16px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
            max-width: 640px;
        }
        .hero-metric {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            padding: 12px 16px;
            text-align: center;
            backdrop-filter: blur(10px);
        }
        .hero-metric .num {
            font-size: 22px;
            font-weight: 700;
            color: #00D4FF;
            line-height: 1.3;
            font-family: 'SF Mono', 'Roboto Mono', monospace;
        }
        .hero-metric .label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 2px;
        }
        .featured-card {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            min-height: 360px;
        }
        .featured-media {
            position: relative;
            min-height: 320px;
        }
        .featured-media img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(270deg, transparent 30%, rgba(16, 27, 51, 0.6) 100%);
        }
        .featured-info {
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-start;
            gap: 12px;
        }
        .featured-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            line-height: 1.45;
            margin-top: 6px;
        }
        .featured-info p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-bottom: 4px;
        }
        .featured-meta {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 4px;
        }
        .capsule-row {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .card-wall {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }
        .cover-card {
            position: relative;
            border-radius: var(--card-radius);
            overflow: hidden;
            min-height: 260px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            text-decoration: none;
        }
        .cover-card .cover-wrap {
            position: absolute;
            inset: 0;
        }
        .cover-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .cover-card:hover .cover-wrap img {
            transform: scale(1.03);
        }
        .cover-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.1) 30%, rgba(10, 17, 40, 0.88) 100%);
        }
        .cover-card .card-content {
            position: relative;
            z-index: 2;
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .cover-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
        }
        .cover-card p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }
        .cover-card .tag-row {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 4px;
        }
        .cover-card .cover-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: #00D4FF;
            margin-top: 6px;
            opacity: 0;
            transform: translateY(4px);
            transition: all .25s ease;
        }
        .cover-card:hover .cover-link {
            opacity: 1;
            transform: translateY(0);
        }
        .card-wall .wide-card:nth-child(1) {
            grid-column: span 4;
        }
        .card-wall .wide-card:nth-child(2) {
            grid-column: span 2;
        }
        .card-wall .small-card:nth-child(n+3) {
            grid-column: span 2;
        }
        .card-wall .small-card .card-content {
            padding: 20px;
        }
        .card-wall .small-card h3 {
            font-size: 17px;
        }
        .card-wall .small-card p {
            font-size: 12px;
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .guide-step {
            padding: 32px 28px;
            text-align: left;
        }
        .step-num {
            font-size: 34px;
            font-weight: 800;
            background: linear-gradient(135deg, #2B6BFF, #00D4FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin-bottom: 14px;
            font-family: 'SF Mono', 'Roboto Mono', monospace;
        }
        .guide-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .guide-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
        }
        .stats-panel {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            padding: 40px 20px;
        }
        .stats-panel .stat-item {
            text-align: center;
            padding: 8px 12px;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stats-panel .stat-item:last-child {
            border-right: none;
        }
        .stats-panel .stat-num {
            display: block;
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            font-family: 'SF Mono', 'Roboto Mono', monospace;
            background: linear-gradient(135deg, #2B6BFF, #00D4FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stats-panel .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .25s ease;
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.35);
        }
        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            list-style: none;
            color: #fff;
            line-height: 1.6;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary svg {
            width: 18px;
            height: 18px;
            color: #00D4FF;
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-item[open] summary svg {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 16px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.9;
        }
        .cta-panel {
            position: relative;
            text-align: center;
            padding: 72px 40px;
            border-radius: 24px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 17, 40, 0.78);
        }
        .cta-panel .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-panel h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-panel p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .site-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 80px;
            padding: 48px 0 24px;
            background: rgba(10, 17, 40, 0.82);
            position: relative;
            z-index: 2;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .logo-dot {
            width: 30px;
            height: 30px;
            border-radius: 10px;
            background: linear-gradient(135deg, #2B6BFF, #00D4FF);
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.35);
            flex-shrink: 0;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            max-width: 360px;
            line-height: 1.8;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 4px 0;
            transition: color .2s ease;
        }
        .footer-col a:hover {
            color: #00D4FF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 36px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            gap: 10px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }
        @media (max-width: 1023px) {
            .hero-inner {
                min-height: 50vh;
            }
            .category-hero h1 {
                font-size: 36px;
            }
            .hero-metrics {
                grid-template-columns: repeat(4, 1fr);
            }
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-media {
                min-height: 240px;
            }
            .card-wall .wide-card:nth-child(1) {
                grid-column: span 3;
            }
            .card-wall .wide-card:nth-child(2) {
                grid-column: span 3;
            }
            .card-wall .small-card:nth-child(n+3) {
                grid-column: span 2;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                max-width: 560px;
                margin: 0 auto;
            }
            .stats-panel {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px 0;
            }
            .stats-panel .stat-item:nth-child(2) {
                border-right: none;
            }
            .stats-panel .stat-item:nth-child(n+3) {
                border-top: 1px solid rgba(255, 255, 255, 0.06);
                padding-top: 20px;
            }
        }
        @media (max-width: 767px) {
            .site-header {
                padding: 12px 12px 0;
            }
            .nav-panel {
                padding: 12px 12px 8px;
                border-radius: 16px;
            }
            .nav-inner {
                gap: 10px;
            }
            .logo-text {
                font-size: 14px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
            }
            .nav-menu {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding-top: 4px;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-cta {
                margin-left: auto;
            }
            .nav-sub {
                overflow-x: auto;
            }
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 48px 0;
            }
            .category-hero {
                margin-top: 12px;
                border-radius: 18px;
            }
            .hero-inner {
                min-height: auto;
                padding: 56px 0 40px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-desc {
                font-size: 14px;
            }
            .hero-actions .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                max-width: 100%;
            }
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-media {
                min-height: 200px;
            }
            .featured-info {
                padding: 24px;
            }
            .featured-info h3 {
                font-size: 19px;
            }
            .card-wall {
                grid-template-columns: 1fr;
            }
            .card-wall .wide-card:nth-child(1),
            .card-wall .wide-card:nth-child(2),
            .card-wall .small-card:nth-child(n+3) {
                grid-column: span 1;
            }
            .cover-card {
                min-height: 220px;
            }
            .cover-card .card-content {
                padding: 18px;
            }
            .cover-card .cover-link {
                opacity: 1;
                transform: none;
            }
            .section-title {
                font-size: 22px;
            }
            .section-sub {
                margin-bottom: 24px;
            }
            .capsule-row {
                gap: 8px;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 6px;
            }
            .stats-panel {
                grid-template-columns: repeat(2, 1fr);
                padding: 28px 12px;
            }
            .stats-panel .stat-num {
                font-size: 28px;
            }
            .cta-panel {
                padding: 48px 20px;
            }
            .cta-panel h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 13px;
            }
            .nav-link {
                padding: 7px 12px;
                font-size: 13px;
            }
            .hero-metric {
                padding: 10px 8px;
            }
            .hero-metric .num {
                font-size: 18px;
            }
            .hero-metric .label {
                font-size: 11px;
            }
            .card-wall .small-card h3 {
                font-size: 16px;
            }
        }