/* roulang page: index */
:root {
            --bg-base: #070A12;
            --bg-elev: #0D1220;
            --glass-bg: rgba(255, 255, 255, 0.045);
            --glass-border: rgba(255, 255, 255, 0.10);
            --line-glow: rgba(45, 224, 192, 0.35);
            --primary: #2DE0C0;
            --cta: #FF8A3D;
            --accent: #8B6CF6;
            --text-hi: #F3F7FF;
            --text-mid: #A7B4CC;
            --text-low: #5C6B85;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            background: var(--bg-base);
            color: var(--text-hi);
            font-family: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, border-color .2s ease, background-color .2s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        section {
            scroll-margin-top: 96px;
        }
        .container-x {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .text-gradient {
            background: linear-gradient(120deg, #FFFFFF 0%, #9FE8DC 40%, #C9B8FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .num-font {
            font-family: "Barlow Condensed", "DIN Alternate", system-ui, sans-serif;
            font-variant-numeric: tabular-nums;
        }
        .glow-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45, 224, 192, 0.3), rgba(139, 108, 246, 0.3), transparent);
            border: none;
        }
        .nav-glow-line {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45, 224, 192, 0.9), rgba(139, 108, 246, 0.9), transparent);
            pointer-events: none;
        }
        .bg-grid {
            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: 42px 42px;
        }
        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }
        .hero-overlay {
            background:
                radial-gradient(ellipse at 30% 20%, rgba(45, 224, 192, 0.16), transparent 60%),
                radial-gradient(ellipse at 85% 80%, rgba(139, 108, 246, 0.12), transparent 50%),
                linear-gradient(180deg, rgba(7, 10, 18, 0.75) 0%, rgba(7, 10, 18, 0.90) 70%, #070A12 100%);
        }
        .glow-card {
            position: relative;
            background: linear-gradient(135deg, rgba(45, 224, 192, 0.55), rgba(139, 108, 246, 0.35));
            padding: 1px;
            border-radius: 1.25rem;
        }
        .glow-card-inner {
            background: #0C111E;
            border-radius: calc(1.25rem - 1px);
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 1.25rem;
            backdrop-filter: blur(12px);
            transition: transform .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease;
        }
        .glass-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(45, 224, 192, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 0 24px rgba(45, 224, 192, 0.10);
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #FF8A3D;
            color: #1A0A00;
            font-weight: 700;
            border-radius: 9999px;
            padding: 12px 30px;
            font-size: 15px;
            transition: all .2s ease;
            box-shadow: 0 0 28px rgba(255, 138, 61, 0.35);
        }
        .cta-btn:hover {
            background: #FFA15E;
            box-shadow: 0 0 40px rgba(255, 138, 61, 0.5);
            transform: translateY(-1px);
        }
        .cta-btn:active {
            transform: translateY(1px);
        }
        .cta-btn svg {
            transition: transform .2s ease;
        }
        .cta-btn:hover svg {
            transform: translateX(4px);
        }
        .ghost-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #F3F7FF;
            font-weight: 700;
            border-radius: 9999px;
            padding: 12px 28px;
            font-size: 15px;
            transition: all .2s ease;
        }
        .ghost-btn:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(45, 224, 192, 0.5);
            color: #fff;
        }
        .ghost-btn:active {
            transform: translateY(1px);
        }
        .text-link {
            color: #2DE0C0;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all .2s ease;
        }
        .text-link:hover {
            text-decoration: underline;
            color: #7DEDD6;
        }
        .text-link:hover svg {
            transform: translateX(4px);
        }
        .text-link svg {
            transition: transform .2s ease;
        }
        .badge-primary {
            display: inline-flex;
            align-items: center;
            background: rgba(45, 224, 192, 0.12);
            color: #2DE0C0;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
        }
        .badge-accent {
            display: inline-flex;
            align-items: center;
            background: rgba(139, 108, 246, 0.15);
            color: #A78BFA;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
        }
        .stat-num {
            font-family: "Barlow Condensed", "DIN Alternate", system-ui, sans-serif;
            font-variant-numeric: tabular-nums;
            font-size: 40px;
            font-weight: 800;
            line-height: 1.1;
            background: linear-gradient(180deg, #FFFFFF 0%, #2DE0C0 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        @media (min-width:1024px) {
            .stat-num {
                font-size: 56px;
            }
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color .2s ease, background-color .2s ease;
        }
        .faq-item.active {
            border-color: rgba(45, 224, 192, 0.4);
            background: rgba(255, 255, 255, 0.045);
        }
        .faq-item.active .faq-question {
            color: #fff;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: #D3DCEB;
            transition: color .2s ease;
            text-align: left;
            width: 100%;
            background: transparent;
            border: none;
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-question .faq-icon {
            transition: transform .3s ease;
            color: #2DE0C0;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 320px;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: #A7B4CC;
            line-height: 1.75;
        }
        .news-thumb {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .news-card {
            transition: transform .2s ease, background-color .2s ease, border-color .2s ease;
        }
        .news-card:hover .news-thumb {
            transform: scale(1.04);
        }
        .news-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(45, 224, 192, 0.4);
        }
        .news-card-large:hover .news-thumb {
            transform: scale(1.02);
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .float-cta {
            opacity: 0;
            pointer-events: none;
            transition: opacity .4s ease, transform .2s ease;
        }
        .float-cta.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .float-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(255, 138, 61, 0.55);
        }
        .input-field {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 12px;
            padding: 12px 16px;
            font-size: 15px;
            color: #fff;
            width: 100%;
            transition: all .2s ease;
        }
        .input-field::placeholder {
            color: #5C6B85;
        }
        .input-field:focus {
            outline: none;
            border-color: #2DE0C0;
            box-shadow: 0 0 0 3px rgba(45, 224, 192, 0.2);
        }
        .nav-link {
            position: relative;
            color: #A7B4CC;
            font-weight: 600;
            font-size: 14px;
            padding: 8px 2px;
            transition: color .2s ease;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #2DE0C0, #8B6CF6);
            box-shadow: 0 0 8px rgba(45, 224, 192, 0.8);
        }
        .footer-link {
            color: #5C6B85;
            font-size: 14px;
            transition: color .2s ease;
        }
        .footer-link:hover {
            color: #fff;
        }
        @media (max-width:768px) {
            .stat-num {
                font-size: 34px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-answer-inner {
                padding: 0 18px 16px;
            }
        }
        @media (max-width:520px) {
            .stat-num {
                font-size: 30px;
            }
            .cta-btn,
            .ghost-btn {
                padding: 10px 22px;
                font-size: 14px;
            }
            .hero-title {
                font-size: 30px !important;
                line-height: 1.2 !important;
            }
        }
        @media (prefers-reduced-motion:reduce) {
            * {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
            }
        }

/* roulang page: article */
:root {
            --bg-base: #070A12;
            --bg-elev: #0D1220;
            --glass-bg: rgba(255, 255, 255, 0.045);
            --glass-border: rgba(255, 255, 255, 0.10);
            --line-glow: rgba(45, 224, 192, 0.35);
            --primary: #2DE0C0;
            --cta: #FF8A3D;
            --accent: #8B6CF6;
            --text-hi: #F3F7FF;
            --text-mid: #A7B4CC;
            --text-low: #5C6B85;
            --font-main: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            --font-num: "Barlow Condensed", "DIN Alternate", system-ui;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-base);
            color: var(--text-hi);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        input,
        textarea {
            font-family: inherit;
            outline: none;
            border: none;
        }

        .container-x {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-mid);
            padding: 8px 2px;
            letter-spacing: .02em;
            transition: color .2s ease;
        }

        .nav-link:hover {
            color: #fff;
        }

        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), rgba(45, 224, 192, 0.4));
            border-radius: 2px;
            box-shadow: 0 0 6px rgba(45, 224, 192, 0.8);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--cta);
            color: #1A0A00;
            font-weight: 700;
            font-size: 14px;
            padding: 10px 24px;
            border-radius: 999px;
            transition: all .2s ease;
            box-shadow: 0 0 20px rgba(255, 138, 61, 0.25);
        }

        .btn-primary:hover {
            background: #FFA05E;
            box-shadow: 0 0 32px rgba(255, 138, 61, 0.45);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .nav-link:focus-visible,
        .footer-link:focus-visible {
            outline: 2px solid rgba(45, 224, 192, 0.6);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-hi);
            font-weight: 600;
            font-size: 14px;
            padding: 10px 24px;
            border-radius: 999px;
            transition: all .2s ease;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(45, 224, 192, 0.5);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(45, 224, 192, 0.12);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: .03em;
        }

        .badge-accent {
            background: rgba(139, 108, 246, 0.15);
            color: #A78BFA;
        }

        .footer-link {
            font-size: 14px;
            color: var(--text-mid);
            transition: color .2s ease;
        }

        .footer-link:hover {
            color: #fff;
        }

        .glow-line {
            height: 1px;
            border: none;
            background: linear-gradient(90deg, transparent, rgba(45, 224, 192, 0.3), rgba(139, 108, 246, 0.3), transparent);
        }

        .card-glass {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            backdrop-filter: blur(12px);
            transition: all .2s ease;
        }

        .card-glass:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(45, 224, 192, 0.35);
            transform: translateY(-2px);
        }

        .card-gradient {
            position: relative;
            border-radius: 16px;
            padding: 1px;
            background: linear-gradient(135deg, rgba(45, 224, 192, 0.4), rgba(255, 255, 255, 0.08), rgba(139, 108, 246, 0.3));
        }

        .card-gradient .card-inner {
            background: #0C111E;
            border-radius: 16px;
            padding: 24px;
            height: 100%;
        }

        .floating-cta {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 60;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--cta);
            color: #1A0A00;
            font-weight: 700;
            font-size: 14px;
            padding: 12px 22px;
            border-radius: 999px;
            box-shadow: 0 0 28px rgba(255, 138, 61, 0.35);
            transition: all .25s ease;
            opacity: 0;
            transform: translateY(16px);
            pointer-events: none;
        }

        .floating-cta.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .floating-cta:hover {
            background: #FFA05E;
            box-shadow: 0 0 40px rgba(255, 138, 61, 0.5);
            transform: translateY(-2px);
        }

        .floating-cta:focus-visible {
            outline: 2px solid rgba(45, 224, 192, 0.6);
            outline-offset: 2px;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -80%;
            width: 80%;
            max-width: 360px;
            height: 100vh;
            background: #0B101D;
            z-index: 80;
            padding: 96px 32px 32px;
            transition: right .3s ease;
            box-shadow: -8px 0 40px rgba(0, 0, 0, 0.5);
            border-left: 1px solid rgba(45, 224, 192, 0.2);
        }

        .mobile-drawer.open {
            right: 0;
        }

        .mobile-drawer a {
            display: block;
            padding: 16px 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-mid);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-drawer a:hover {
            color: var(--primary);
        }

        .mobile-drawer a.active {
            color: #fff;
        }

        .hamburger-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all .2s ease;
        }

        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .hamburger-btn span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-hi);
            margin: 2px 0;
            transition: all .3s ease;
            border-radius: 2px;
        }

        .hamburger-btn.active span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger-btn.active span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .breadcrumb-item {
            font-size: 13px;
            color: var(--text-low);
        }

        .breadcrumb-item+.breadcrumb-item::before {
            content: '/';
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.15);
        }

        .breadcrumb-item.current {
            color: var(--text-hi);
        }

        .article-content {
            font-size: 15px;
            line-height: 1.9;
            color: #D3DCEB;
        }

        .article-content h2 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-hi);
            margin-top: 44px;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .article-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-hi);
            margin-top: 30px;
            margin-bottom: 12px;
            padding-left: 14px;
            border-left: 3px solid var(--primary);
        }

        .article-content p {
            margin-bottom: 24px;
            font-size: 15px;
            line-height: 1.9;
            color: #D3DCEB;
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 28px;
            padding-left: 26px;
        }

        .article-content li {
            margin-bottom: 10px;
            line-height: 1.8;
            position: relative;
        }

        .article-content ul li::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 6px rgba(45, 224, 192, 0.5);
        }

        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(255, 255, 255, 0.04);
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 28px 0;
            color: var(--text-mid);
            font-style: italic;
        }

        .article-content img {
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            margin: 28px 0;
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: #7DEDD6;
        }

        .article-content code {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 6px;
            padding: 2px 8px;
            font-size: 13px;
            font-family: 'JetBrains Mono', 'Courier New', monospace;
            color: var(--primary);
        }

        .article-content pre {
            background: #0B101D;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 20px;
            overflow-x: auto;
            margin: 28px 0;
        }

        .article-content pre code {
            background: transparent;
            border: none;
            color: #D3DCEB;
            padding: 0;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 14px;
        }

        .article-content table th {
            background: rgba(255, 255, 255, 0.05);
            padding: 12px 16px;
            text-align: left;
            font-weight: 700;
            color: var(--text-hi);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .article-content table td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-mid);
        }

        .article-content table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .rel-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            overflow: hidden;
            transition: all .25s ease;
        }

        .rel-card:hover {
            border-color: rgba(45, 224, 192, 0.35);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
        }

        .rel-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .rel-card-body {
            padding: 20px;
        }

        .data-number {
            font-family: var(--font-num);
            font-variant-numeric: tabular-nums;
            font-size: 48px;
            font-weight: 800;
            line-height: 1.1;
            background: linear-gradient(135deg, #fff, #2DE0C0);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .bg-glow {
            position: absolute;
            background: radial-gradient(ellipse, rgba(45, 224, 192, 0.16), transparent 60%);
            pointer-events: none;
        }

        .bg-grid {
            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: 40px 40px;
        }

        .article-hero-image {
            overflow: hidden;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            position: relative;
        }

        .article-hero-image img {
            width: 100%;
            aspect-ratio: 21/9;
            object-fit: cover;
        }

        .article-hero-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(7, 10, 18, 0.2), transparent 40%);
            pointer-events: none;
        }

        .tag-chip {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-mid);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            padding: 4px 14px;
            transition: all .2s ease;
        }

        .tag-chip:hover {
            color: var(--primary);
            border-color: rgba(45, 224, 192, 0.4);
            background: rgba(45, 224, 192, 0.08);
        }

        .pagination-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .pagination-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-mid);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 10px 18px;
            transition: all .2s ease;
        }

        .pagination-nav a:hover {
            color: var(--primary);
            border-color: rgba(45, 224, 192, 0.4);
        }

        .pagination-nav a.next-link {
            margin-left: auto;
        }

        @media (max-width: 768px) {
            .container-x {
                padding: 0 16px;
            }
            .data-number {
                font-size: 36px;
            }
            .article-hero-image img {
                aspect-ratio: 16/9;
            }
            .article-content h2 {
                font-size: 19px;
            }
            .article-content h3 {
                font-size: 16px;
            }
            .article-content {
                font-size: 14px;
            }
            .floating-cta {
                bottom: 16px;
                right: 16px;
                padding: 10px 18px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .container-x {
                padding: 0 14px;
            }
            .data-number {
                font-size: 30px;
            }
            .rel-card img {
                height: 150px;
            }
        }

        @media (min-width: 769px) and (max-width: 1024px) {
            .container-x {
                padding: 0 32px;
            }
        }

/* roulang page: category1 */
:root {
  --bg-base: #070A12;
  --bg-elev: #0D1220;
  --glass-bg: rgba(255,255,255,0.045);
  --glass-border: rgba(255,255,255,0.10);
  --line-glow: rgba(45,224,192,0.35);
  --primary: #2DE0C0;
  --cta: #FF8A3D;
  --accent: #8B6CF6;
  --text-hi: #F3F7FF;
  --text-mid: #A7B4CC;
  --text-low: #5C6B85;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-base);
  color: var(--text-mid);
  font-family: "HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.container-x {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.header-sticky {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(7,10,18,0.82);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-sticky::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(45,224,192,0.9), rgba(139,108,246,0.9), transparent);
  pointer-events: none;
}

.nav-link {
  position: relative;
  color: var(--text-mid);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  transition: color 0.2s;
}
.nav-link:hover { color: #fff; }
.nav-link.active { color: #fff; }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  box-shadow: 0 0 6px rgba(45,224,192,0.8), 0 0 12px rgba(45,224,192,0.4);
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--cta);
  color: #1A0A00;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 28px;
  border-radius: 999px;
  box-shadow: 0 0 28px rgba(255,138,61,0.35);
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}
.btn-cta:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 36px rgba(255,138,61,0.5);
  transform: translateY(-1px);
}
.btn-cta:active { transform: translateY(1px); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255,255,255,0.05);
  color: var(--text-hi);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 28px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.15);
  transition: all 0.2s;
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(45,224,192,0.5);
  color: #fff;
}

.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  backdrop-filter: blur(12px);
  padding: 24px;
  transition: all 0.2s;
}
.glass-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(45,224,192,0.35);
  transform: translateY(-4px);
  box-shadow: 0 0 24px rgba(45,224,192,0.2);
}

.gradient-card-wrap {
  position: relative;
  padding: 1px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(45,224,192,0.5), rgba(139,108,246,0.35));
}
.gradient-card-inner {
  background: #0C111E;
  border-radius: 19px;
  padding: 24px;
  height: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(45,224,192,0.12);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.badge-accent {
  background: rgba(139,108,246,0.15);
  color: #A78BFA;
}
.badge-cta {
  background: rgba(255,138,61,0.15);
  color: var(--cta);
}

.stat-number {
  font-family: "Barlow Condensed","DIN Alternate",system-ui;
  font-variant-numeric: tabular-nums;
  font-size: 44px;
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff 20%, #2DE0C0 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-divider {
  height: 1px;
  border: none;
  background: linear-gradient(90deg, transparent, rgba(45,224,192,0.3), rgba(139,108,246,0.3), transparent);
}

.gradient-text {
  background: linear-gradient(120deg, #FFFFFF 0%, #9FE8DC 40%, #C9B8FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-glow {
  background: radial-gradient(ellipse, rgba(45,224,192,0.16), transparent 60%);
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grid-bg {
  background-image:
    linear-gradient(rgba(45,224,192,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45,224,192,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
}

.rank-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: var(--cta);
  color: #1A0A00;
  font-weight: 900;
  font-size: 18px;
  box-shadow: 0 0 20px rgba(255,138,61,0.4);
  font-family: "Barlow Condensed","DIN Alternate",system-ui;
}

.list-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  transition: all 0.2s;
}
.list-row:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(45,224,192,0.3);
  transform: translateX(4px);
}

.step-card {
  position: relative;
  border-radius: 20px;
  padding: 28px 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.2s;
}
.step-card:hover {
  border-color: rgba(45,224,192,0.3);
  background: rgba(255,255,255,0.05);
}
.step-num {
  font-family: "Barlow Condensed","DIN Alternate",system-ui;
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  color: rgba(255,255,255,0.08);
  position: absolute;
  top: 16px;
  right: 20px;
}

.faq-item {
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
  background: rgba(255,255,255,0.03);
}
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.2s;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item:hover summary { color: #fff; }
.faq-item[open] {
  border-color: rgba(45,224,192,0.3);
  box-shadow: inset 3px 0 0 var(--primary);
}
.faq-icon {
  transition: transform 0.3s;
  color: var(--primary);
  flex-shrink: 0;
}
.faq-item[open] .faq-icon { transform: rotate(180deg); }
.faq-body {
  padding: 0 24px 20px;
  color: var(--text-mid);
  font-size: 14px;
  line-height: 1.8;
}

.floating-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 90;
  background: var(--cta);
  color: #1A0A00;
  font-weight: 700;
  font-size: 14px;
  padding: 14px 24px;
  border-radius: 999px;
  box-shadow: 0 0 28px rgba(255,138,61,0.35);
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.2s;
}
.floating-cta.show {
  opacity: 1;
  pointer-events: auto;
}
.floating-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(255,138,61,0.5);
}

.footer-link {
  color: var(--text-mid);
  font-size: 14px;
  transition: color 0.2s;
}
.footer-link:hover { color: #fff; }

.mobile-menu {
  position: fixed;
  top: 0; right: 0;
  width: 80%;
  max-width: 360px;
  height: 100vh;
  background: #0B101D;
  z-index: 120;
  padding: 28px 24px;
  border-left: 1px solid rgba(45,224,192,0.25);
  box-shadow: -8px 0 30px rgba(0,0,0,0.5);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
}
.mobile-menu.open { transform: translateX(0); }

a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid rgba(45,224,192,0.6);
  outline-offset: 2px;
}

.cta-glow {
  background: radial-gradient(ellipse at center, rgba(255,138,61,0.2), transparent 65%);
}

@media (max-width: 768px) {
  .stat-number { font-size: 32px; }
  .btn-cta, .btn-ghost { padding: 11px 22px; font-size: 14px; }
  .container-x { padding: 0 20px; }
}
@media (max-width: 520px) {
  .stat-number { font-size: 28px; }
  .floating-cta { padding: 12px 18px; font-size: 13px; }
  .floating-cta span { display: none; }
}

/* roulang page: category2 */
:root {
            --bg-base: #070A12;
            --bg-elev: #0D1220;
            --glass-bg: rgba(255, 255, 255, 0.045);
            --glass-border: rgba(255, 255, 255, 0.10);
            --line-glow: rgba(45, 224, 192, 0.35);
            --primary: #2DE0C0;
            --cta: #FF8A3D;
            --accent: #8B6CF6;
            --text-hi: #F3F7FF;
            --text-mid: #A7B4CC;
            --text-low: #5C6B85;
            --font-sans: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            --font-display: "Barlow Condensed", "DIN Alternate", system-ui;
            --radius-card: 16px;
            --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 84px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            color: var(--text-hi);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img {
            display: block;
            max-width: 100%;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button {
            background: none;
            border: none;
            cursor: pointer;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid rgba(45, 224, 192, 0.6);
            outline-offset: 2px;
        }

        .container-x {
            width: min(1200px, 92%);
            margin-inline: auto;
        }

        .text-hi {
            color: var(--text-hi);
        }
        .text-mid {
            color: var(--text-mid);
        }
        .text-low {
            color: var(--text-low);
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-mid);
            padding: 8px 2px;
            letter-spacing: 0.02em;
            transition: color 0.2s ease;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 0 10px rgba(45, 224, 192, 0.8);
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--cta);
            color: #1A0A00;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            box-shadow: 0 0 28px rgba(255, 138, 61, 0.35);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .cta-btn:hover {
            background: #FF9C5A;
            box-shadow: 0 0 38px rgba(255, 138, 61, 0.5);
            transform: translateY(-1px);
            color: #1A0A00;
        }
        .cta-btn:active {
            transform: translateY(1px);
        }
        .cta-btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            box-shadow: 0 0 18px rgba(255, 138, 61, 0.3);
        }

        .ghost-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-hi);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .ghost-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(45, 224, 192, 0.5);
            color: #fff;
        }
        .ghost-btn:active {
            transform: translateY(1px);
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: color 0.2s, gap 0.2s;
        }
        .text-link:hover {
            color: #fff;
            gap: 8px;
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(12px);
            transition: all 0.2s ease;
        }
        .glass-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(45, 224, 192, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
        }

        .gradient-border {
            position: relative;
            background: linear-gradient(135deg, rgba(45, 224, 192, 0.5), rgba(255, 255, 255, 0.08) 40%, rgba(139, 108, 246, 0.5));
            border-radius: var(--radius-card);
            padding: 1px;
            transition: all 0.2s ease;
        }
        .gradient-border:hover {
            box-shadow: 0 0 28px rgba(45, 224, 192, 0.25);
            transform: translateY(-4px);
        }
        .gradient-border > .inner {
            background: #0C111E;
            border-radius: calc(var(--radius-card) - 1px);
            height: 100%;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        .badge-green {
            background: rgba(45, 224, 192, 0.12);
            color: var(--primary);
        }
        .badge-purple {
            background: rgba(139, 108, 246, 0.15);
            color: #A78BFA;
        }
        .badge-amber {
            background: rgba(255, 138, 61, 0.15);
            color: var(--cta);
        }

        .data-number {
            font-family: var(--font-display);
            font-size: 44px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            background: linear-gradient(135deg, #fff 20%, var(--primary) 90%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1;
        }

        .hero-grad-text {
            background: linear-gradient(120deg, #FFFFFF 0%, #9FE8DC 40%, #C9B8FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
            background: rgba(45, 224, 192, 0.1);
            border: 1px solid rgba(45, 224, 192, 0.3);
            color: var(--primary);
        }

        .tool-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .tip-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            padding: 24px;
            transition: all 0.2s ease;
        }
        .tip-card:hover {
            border-color: rgba(45, 224, 192, 0.4);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-3px);
        }
        .tip-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .divider {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45, 224, 192, 0.3), rgba(139, 108, 246, 0.3), transparent);
            margin: 0;
        }

        .hero-glow {
            background:
                radial-gradient(ellipse at 70% 20%, rgba(45, 224, 192, 0.15), transparent 60%),
                radial-gradient(ellipse at 15% 70%, rgba(139, 108, 246, 0.12), transparent 50%);
        }

        .grid-lines {
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 42px 42px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }
        .faq-item.active {
            border-color: rgba(45, 224, 192, 0.4);
            background: rgba(45, 224, 192, 0.04);
        }
        .faq-q {
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-hi);
            padding: 20px 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color 0.2s;
        }
        .faq-q:hover {
            color: #fff;
        }
        .faq-arrow {
            flex-shrink: 0;
            transition: transform 0.25s ease, color 0.25s;
            color: var(--text-low);
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-a-inner {
            border-left: 2px solid rgba(45, 224, 192, 0.6);
            background: rgba(255, 255, 255, 0.02);
            padding: 12px 16px;
            margin: 0 22px 20px;
            border-radius: 0 10px 10px 0;
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.85;
        }

        .footer-link {
            color: var(--text-low);
            font-size: 14px;
            transition: color 0.2s;
        }
        .footer-link:hover {
            color: #fff;
        }

        .mobile-link {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-mid);
            border-radius: 10px;
            transition: all 0.2s;
        }
        .mobile-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .mobile-link.active {
            background: rgba(45, 224, 192, 0.1);
            color: #fff;
            box-shadow: inset 0 0 0 1px rgba(45, 224, 192, 0.3);
        }

        .float-cta {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 40;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--cta);
            color: #1A0A00;
            font-weight: 800;
            font-size: 14px;
            padding: 14px 24px;
            border-radius: 999px;
            box-shadow: 0 0 28px rgba(255, 138, 61, 0.4);
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all 0.3s ease;
        }
        .float-cta.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .float-cta:hover {
            background: #FF9C5A;
            box-shadow: 0 0 40px rgba(255, 138, 61, 0.55);
            color: #1A0A00;
        }

        #mobileMenu {
            transition: transform 0.3s ease;
        }
        #mobileMenu.open {
            transform: translateX(0);
        }

        @media (max-width: 640px) {
            .data-number {
                font-size: 34px;
            }
            .cta-btn,
            .ghost-btn {
                width: 100%;
            }
            .float-cta {
                bottom: 16px;
                right: 16px;
                padding: 12px 18px;
                font-size: 13px;
            }
        }