/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #00ff88;
            --clr-primary-dim: #00cc6a;
            --clr-secondary: #00d4ff;
            --clr-accent: #ff6b35;
            --clr-bg-dark: #0a0a0f;
            --clr-bg-card: #141420;
            --clr-bg-section: #0e0e18;
            --clr-bg-nav: #07070c;
            --clr-bg-input: #1c1c2e;
            --clr-text-main: #f0f0f5;
            --clr-text-muted: #9a9ab0;
            --clr-text-dim: #6a6a80;
            --clr-border: #2a2a40;
            --clr-border-light: #3a3a55;
            --clr-glow: rgba(0, 255, 136, 0.25);
            --clr-glow-cyan: rgba(0, 212, 255, 0.2);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(42, 42, 64, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 255, 136, 0.12);
            --shadow-btn: 0 4px 20px rgba(0, 255, 136, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--clr-bg-dark);
            color: var(--clr-text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--clr-secondary); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--clr-primary); }
        a:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }

        /* ===== Container ===== */
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Section Spacing ===== */
        .section { padding: 80px 0; }
        .section-sm { padding: 48px 0; }
        .section-title {
            font-size: 2.4rem;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--clr-text-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }
        @media (max-width: 768px) {
            .section { padding: 48px 0; }
            .section-title { font-size: 1.8rem; }
            .section-subtitle { font-size: 1rem; }
        }

        /* ===== Header / Nav (Dark Neon) ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--clr-bg-nav);
            border-bottom: 1px solid var(--clr-border);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.7);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px var(--clr-glow);
            white-space: nowrap;
        }
        .logo:hover { opacity: 0.85; }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            color: var(--clr-text-muted);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--clr-text-main);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-links a.active {
            color: var(--clr-primary);
            background: rgba(0, 255, 136, 0.08);
            box-shadow: inset 0 -2px 0 var(--clr-primary), 0 0 20px var(--clr-glow);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--clr-primary);
            filter: blur(4px);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dim)) !important;
            color: #0a0a0f !important;
            padding: 8px 24px !important;
            border-radius: var(--radius-md) !important;
            font-weight: 700 !important;
            box-shadow: var(--shadow-btn);
            transition: var(--transition) !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 30px var(--clr-glow) !important;
            color: #0a0a0f !important;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--clr-text-main);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .hamburger:focus-visible { outline: 2px solid var(--clr-primary); }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--clr-bg-nav);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--clr-border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0,0,0,0.6);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a { padding: 12px 16px; width: 100%; text-align: center; }
            .nav-links a.active::after { display: none; }
            .nav-cta { margin-top: 8px; text-align: center; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 10, 15, 0.88) 0%, rgba(10, 10, 15, 0.70) 60%, rgba(0, 255, 136, 0.10) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--clr-bg-dark) 0%, transparent 100%);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 860px;
            padding: 0 24px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(0, 255, 136, 0.12);
            border: 1px solid rgba(0, 255, 136, 0.25);
            color: var(--clr-primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 24px;
            box-shadow: 0 0 30px var(--clr-glow);
        }
        .hero h1 {
            font-size: 3.6rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 30%, var(--clr-primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--clr-text-muted);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dim));
            color: #0a0a0f;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px var(--clr-glow);
            color: #0a0a0f;
        }
        .btn-outline {
            background: transparent;
            color: var(--clr-text-main);
            border: 1.5px solid var(--clr-border-light);
        }
        .btn-outline:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            box-shadow: 0 0 25px var(--clr-glow);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero { min-height: 70vh; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .btn { padding: 12px 24px; font-size: 0.9rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; align-items: center; }
        }

        /* ===== Feature Cards ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 255, 136, 0.2);
            box-shadow: var(--shadow-card), 0 0 40px var(--clr-glow);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: rgba(0, 255, 136, 0.08);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--clr-primary);
            border: 1px solid rgba(0, 255, 136, 0.15);
        }
        .feature-card h3 { font-size: 1.3rem; margin-bottom: 10px; }
        .feature-card p { color: var(--clr-text-muted); font-size: 0.95rem; line-height: 1.6; }
        @media (max-width: 900px) { .features-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 600px) { .features-grid { grid-template-columns: 1fr; } }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            min-height: 340px;
            display: flex;
            align-items: flex-end;
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 212, 255, 0.25);
            box-shadow: var(--shadow-card), 0 0 40px var(--clr-glow-cyan);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover img { transform: scale(1.05); }
        .category-overlay {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 32px 28px;
            background: linear-gradient(to top, rgba(10,10,15,0.95) 30%, rgba(10,10,15,0.3) 100%);
        }
        .category-overlay h3 { font-size: 1.6rem; margin-bottom: 6px; }
        .category-overlay p { color: var(--clr-text-muted); font-size: 0.95rem; margin-bottom: 14px; }
        .category-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid rgba(0, 212, 255, 0.2);
            color: var(--clr-secondary);
            font-size: 0.8rem;
            font-weight: 600;
        }
        @media (max-width: 700px) { .category-grid { grid-template-columns: 1fr; } }

        /* ===== Latest News / CMS List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 255, 136, 0.15);
            box-shadow: var(--shadow-card), 0 0 30px var(--clr-glow);
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--clr-text-dim);
            margin-bottom: 10px;
        }
        .news-meta .cat { color: var(--clr-secondary); font-weight: 600; }
        .news-card h3 { font-size: 1.1rem; margin-bottom: 8px; line-height: 1.4; }
        .news-card h3 a { color: var(--clr-text-main); }
        .news-card h3 a:hover { color: var(--clr-primary); }
        .news-card p { color: var(--clr-text-muted); font-size: 0.9rem; line-height: 1.6; flex: 1; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--clr-text-dim);
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--clr-border);
        }
        @media (max-width: 700px) { .news-grid { grid-template-columns: 1fr; } }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: rgba(0, 255, 136, 0.15);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-label { color: var(--clr-text-muted); font-size: 0.9rem; margin-top: 6px; }
        @media (max-width: 800px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr; } }

        /* ===== Process / Steps ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            text-align: center;
            padding: 28px 16px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 255, 0.15);
        }
        .step-number {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dim));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #0a0a0f;
            box-shadow: 0 0 30px var(--clr-glow);
        }
        .step-card h4 { font-size: 1.1rem; margin-bottom: 6px; }
        .step-card p { color: var(--clr-text-muted); font-size: 0.9rem; }
        @media (max-width: 800px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .process-grid { grid-template-columns: 1fr; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(0, 255, 136, 0.1); }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--clr-text-main);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--clr-primary); }
        .faq-question:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: -2px; }
        .faq-question .icon { font-size: 1.2rem; transition: var(--transition); color: var(--clr-text-dim); }
        .faq-item.active .faq-question .icon { transform: rotate(180deg); color: var(--clr-primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--clr-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 260px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            isolation: isolate;
            padding: 100px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,10,15,0.88) 0%, rgba(10,10,15,0.70) 100%);
            z-index: 1;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 {
            font-size: 2.4rem;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #ffffff, var(--clr-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .cta-section p {
            color: var(--clr-text-muted);
            font-size: 1.1rem;
            max-width: 540px;
            margin: 0 auto 32px;
        }
        .cta-section .btn { font-size: 1.1rem; padding: 16px 44px; }
        @media (max-width: 768px) {
            .cta-section { padding: 64px 0; }
            .cta-section h2 { font-size: 1.8rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-bg-nav);
            border-top: 1px solid var(--clr-border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { font-size: 1.3rem; display: inline-block; margin-bottom: 12px; }
        .footer-brand p { color: var(--clr-text-muted); font-size: 0.9rem; max-width: 320px; line-height: 1.7; }
        .footer-col h4 { font-size: 1rem; color: var(--clr-text-main); margin-bottom: 16px; }
        .footer-col a {
            display: block;
            color: var(--clr-text-dim);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--clr-primary); padding-left: 6px; }
        .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--clr-text-dim);
        }
        .footer-bottom a { color: var(--clr-text-dim); }
        .footer-bottom a:hover { color: var(--clr-primary); }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-text-muted);
            transition: var(--transition);
        }
        .footer-socials a:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            box-shadow: 0 0 20px var(--clr-glow);
            transform: translateY(-2px);
        }
        @media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .gap-12 { gap: 12px; }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            color: var(--clr-text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
            z-index: 999;
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
        }
        .back-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
        .back-top:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            box-shadow: 0 0 30px var(--clr-glow);
            transform: translateY(-4px);
        }
        @media (max-width: 520px) { .back-top { bottom: 20px; right: 20px; width: 40px; height: 40px; font-size: 1rem; } }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--container-max); padding-left: 24px; padding-right: 24px; }
        @media (max-width: 768px) { .grid-container { padding-left: 16px; padding-right: 16px; } }
        .cell { margin-bottom: 0; }

/* roulang page: article */
:root {
            --primary: #ff2d55;
            --primary-dark: #cc0033;
            --primary-glow: rgba(255, 45, 85, 0.45);
            --accent: #00e5ff;
            --accent-glow: rgba(0, 229, 255, 0.35);
            --bg-dark: #0b0c10;
            --bg-card: #13151a;
            --bg-elevated: #1a1d24;
            --bg-section: #0f1117;
            --text-main: #e8eaed;
            --text-soft: #b0b3b8;
            --text-weak: #6c6f76;
            --border-color: #2a2d35;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 30px rgba(255,45,85,0.15);
            --transition: 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --container-max: 1200px;
            --nav-height: 68px;
        }

        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: 1rem; }

        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--nav-height);
            background: rgba(11,12,16,0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 20px rgba(0,0,0,0.5);
        }
        .site-header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.35rem; font-weight: 800; letter-spacing: 1px;
            color: #fff !important; text-transform: none;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
            position: relative;
        }
        .logo::after {
            content: ''; display: block;
            width: 60%; height: 3px;
            background: var(--primary);
            border-radius: 4px;
            margin-top: 2px;
            box-shadow: 0 0 12px var(--primary-glow);
        }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            color: var(--text-soft); font-size: 0.9rem; font-weight: 500;
            padding: 8px 16px; border-radius: var(--radius-sm);
            transition: var(--transition); position: relative;
            letter-spacing: 0.3px;
        }
        .nav-links a:hover { color: #fff; background: rgba(255,255,255,0.06); }
        .nav-links a.active {
            color: var(--primary); background: rgba(255,45,85,0.12);
            box-shadow: inset 0 -2px 0 var(--primary);
        }
        .nav-links a.active::after {
            content: ''; position: absolute; bottom: -2px; left: 50%; transform: translateX(-50%);
            width: 60%; height: 3px; background: var(--primary);
            border-radius: 4px; box-shadow: 0 0 14px var(--primary-glow);
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important; font-weight: 600; padding: 8px 22px;
            border-radius: var(--radius-sm); box-shadow: 0 4px 18px var(--primary-glow);
            margin-left: 8px; display: flex; align-items: center; gap: 6px;
        }
        .nav-links a.nav-cta:hover {
            transform: translateY(-2px); box-shadow: 0 8px 28px var(--primary-glow);
        }
        .nav-toggle {
            display: none; background: none; border: none; color: #fff;
            font-size: 1.6rem; cursor: pointer; padding: 4px 8px;
        }
        @media (max-width: 820px) {
            .nav-links {
                position: fixed; top: var(--nav-height); left: 0; right: 0;
                background: rgba(11,12,16,0.98); backdrop-filter: blur(18px);
                flex-direction: column; padding: 20px 24px 28px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%); opacity: 0;
                pointer-events: none; transition: var(--transition);
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links a { width: 100%; padding: 12px 16px; text-align: center; }
            .nav-links a.nav-cta { margin-left: 0; justify-content: center; }
            .nav-toggle { display: block; }
        }

        .page-banner {
            margin-top: var(--nav-height);
            padding: 100px 0 60px;
            background: linear-gradient(135deg, #0b0c10 0%, #1a1d24 50%, #0f1117 100%);
            position: relative; overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12; pointer-events: none;
        }
        .page-banner .container { position: relative; z-index: 1; }
        .page-banner h1 {
            font-size: 2.2rem; font-weight: 800; line-height: 1.3;
            color: #fff; margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.5);
        }
        .page-banner .meta-line {
            display: flex; flex-wrap: wrap; gap: 20px;
            color: var(--text-weak); font-size: 0.9rem;
        }
        .page-banner .meta-line span { display: flex; align-items: center; gap: 6px; }
        .page-banner .meta-line .category-tag {
            background: var(--primary); color: #fff; padding: 2px 14px;
            border-radius: 20px; font-size: 0.8rem; font-weight: 600;
        }

        .article-section {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }
        .article-wrapper {
            max-width: 840px; margin: 0 auto;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            font-size: 1.05rem; line-height: 1.85;
            color: var(--text-main);
        }
        .article-body p { margin-bottom: 1.2em; }
        .article-body h2, .article-body h3 {
            color: #fff; margin-top: 1.6em; margin-bottom: 0.6em;
            font-weight: 700;
        }
        .article-body h2 { font-size: 1.6rem; border-left: 4px solid var(--primary); padding-left: 16px; }
        .article-body h3 { font-size: 1.3rem; }
        .article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 1.2em; }
        .article-body li { margin-bottom: 0.4em; }
        .article-body img { border-radius: var(--radius-md); margin: 24px 0; border: 1px solid var(--border-color); }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(0,229,255,0.06);
            padding: 16px 24px; margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-soft); font-style: italic;
        }
        .article-body a { color: var(--accent); text-decoration: underline; }
        .article-body a:hover { color: var(--primary); }

        .article-footer-nav {
            margin-top: 40px; display: flex; justify-content: space-between;
            flex-wrap: wrap; gap: 16px;
        }
        .article-footer-nav a {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 24px; background: var(--bg-elevated);
            border: 1px solid var(--border-color); border-radius: var(--radius-sm);
            color: var(--text-soft); font-size: 0.95rem;
            transition: var(--transition);
        }
        .article-footer-nav a:hover {
            background: var(--bg-card); color: var(--accent);
            border-color: var(--accent); box-shadow: 0 0 20px rgba(0,229,255,0.08);
        }

        .site-footer {
            background: #080a0e; border-top: 1px solid var(--border-color);
            padding: 60px 0 30px; margin-top: 0;
        }
        .footer-grid {
            display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px; margin-bottom: 40px;
        }
        @media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } }
        .footer-brand .logo { font-size: 1.2rem; display: inline-block; margin-bottom: 12px; }
        .footer-brand p { color: var(--text-weak); font-size: 0.9rem; max-width: 280px; line-height: 1.6; }
        .footer-col h4 {
            color: #fff; font-size: 0.95rem; font-weight: 700;
            margin-bottom: 16px; letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block; color: var(--text-weak); font-size: 0.88rem;
            padding: 4px 0; transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            width: 38px; height: 38px; border-radius: 50%;
            background: rgba(255,255,255,0.05); border: 1px solid var(--border-color);
            display: flex; align-items: center; justify-content: center;
            color: var(--text-soft); font-size: 1rem; padding: 0;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--primary); color: #fff;
            border-color: var(--primary); box-shadow: 0 0 20px var(--primary-glow);
            padding-left: 0; transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px; display: flex; justify-content: space-between;
            flex-wrap: wrap; gap: 12px;
            color: var(--text-weak); font-size: 0.82rem;
        }
        @media (max-width: 520px) { .footer-bottom { flex-direction: column; text-align: center; } }

        @media (max-width: 768px) {
            .page-banner { padding: 80px 0 40px; }
            .page-banner h1 { font-size: 1.6rem; }
            .article-body { padding: 28px 20px; font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .page-banner h1 { font-size: 1.35rem; }
            .article-body { padding: 20px 16px; border-radius: var(--radius-md); }
            .article-footer-nav { flex-direction: column; align-items: stretch; }
            .article-footer-nav a { justify-content: center; }
        }

        .not-found-box {
            text-align: center; padding: 80px 20px;
        }
        .not-found-box i { font-size: 4rem; color: var(--text-weak); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.8rem; color: #fff; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-soft); margin-bottom: 28px; }
        .not-found-box .btn-back {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; background: var(--primary);
            color: #fff; border-radius: var(--radius-sm);
            font-weight: 600; transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 28px var(--primary-glow); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #ff2d55;
            --primary-light: #ff6b8a;
            --primary-dark: #cc0033;
            --accent: #00e5ff;
            --accent-dim: #0099cc;
            --bg-dark: #0a0e1a;
            --bg-card: #131a2e;
            --bg-card-hover: #1a2540;
            --bg-section: #0d1225;
            --bg-section-alt: #111a30;
            --text-main: #f0f4ff;
            --text-secondary: #a0b0d0;
            --text-muted: #6a7a9a;
            --border-color: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.3);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-body);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-main); }
        p { color: var(--text-secondary); margin-bottom: 0.5rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }
        .section-title { font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; letter-spacing: -0.02em; }
        .section-subtitle { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 2.5rem; max-width: 640px; }
        .text-center { text-align: center; }
        .text-gradient { background: linear-gradient(135deg, var(--accent), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--border-glow); border-radius: 10px; }

        /* ===== Button ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
            border-radius: 50px; font-weight: 600; font-size: 0.95rem;
            transition: var(--transition); border: none; cursor: pointer;
            font-family: var(--font-body); letter-spacing: 0.01em;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; box-shadow: 0 4px 20px rgba(255, 45, 85, 0.35);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255, 45, 85, 0.5); color: #fff; }
        .btn-outline {
            background: transparent; color: var(--accent);
            border: 2px solid var(--accent); box-shadow: none;
        }
        .btn-outline:hover { background: rgba(0, 229, 255, 0.1); transform: translateY(-2px); color: var(--accent); }
        .btn-accent {
            background: var(--accent); color: var(--bg-dark); font-weight: 700;
            box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
        }
        .btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 229, 255, 0.45); color: var(--bg-dark); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 0.75rem; font-weight: 600; letter-spacing: 0.03em;
            background: rgba(0, 229, 255, 0.12); color: var(--accent);
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .badge-live { background: rgba(255, 45, 85, 0.2); color: var(--primary-light); border-color: rgba(255, 45, 85, 0.3); }
        .badge-hot { background: rgba(255, 165, 0, 0.2); color: #ffaa33; border-color: rgba(255, 165, 0, 0.3); }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            border: 1px solid var(--border-color); padding: 24px;
            transition: var(--transition); position: relative; overflow: hidden;
        }
        .card:hover { background: var(--bg-card-hover); border-color: var(--border-glow); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
        .card-img { border-radius: var(--radius-md); overflow: hidden; margin-bottom: 16px; position: relative; }
        .card-img img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform 0.5s ease; }
        .card:hover .card-img img { transform: scale(1.05); }
        .card-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
        .card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
        .card h3 a { color: var(--text-main); }
        .card h3 a:hover { color: var(--accent); }
        .card p { font-size: 0.9rem; color: var(--text-secondary); }
        .card-meta { display: flex; align-items: center; gap: 16px; margin-top: 16px; font-size: 0.82rem; color: var(--text-muted); }
        .card-meta i { margin-right: 4px; }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
            background: rgba(10, 14, 26, 0.92); backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color); height: var(--nav-height);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(10, 14, 26, 0.98); box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--nav-height); max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .logo {
            font-size: 1.35rem; font-weight: 900; color: #fff; letter-spacing: -0.02em;
            display: flex; align-items: center; gap: 8px; background: none;
        }
        .logo i { color: var(--primary); font-size: 1.2rem; }
        .logo span { background: linear-gradient(135deg, var(--accent), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { color: #fff; }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            padding: 8px 16px; border-radius: 50px; font-size: 0.9rem; font-weight: 500;
            color: var(--text-secondary); transition: var(--transition); position: relative;
        }
        .nav-links a:hover { color: var(--text-main); background: rgba(255, 255, 255, 0.05); }
        .nav-links a.active {
            color: #fff; background: rgba(0, 229, 255, 0.12);
            box-shadow: inset 0 0 0 1px var(--border-glow), 0 0 20px rgba(0, 229, 255, 0.05);
        }
        .nav-links a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 2px; background: var(--accent); border-radius: 4px;
            box-shadow: 0 0 10px var(--accent);
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; font-weight: 600; padding: 8px 20px; box-shadow: 0 4px 16px rgba(255, 45, 85, 0.3);
        }
        .nav-links a.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(255, 45, 85, 0.45); color: #fff; }
        .nav-links a.nav-cta i { font-size: 0.85rem; }

        /* Mobile Menu Toggle */
        .menu-toggle { display: none; background: none; border: none; color: var(--text-main); font-size: 1.5rem; cursor: pointer; padding: 8px; border-radius: 8px; }
        .menu-toggle:hover { background: rgba(255, 255, 255, 0.05); }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative; min-height: 420px; display: flex; align-items: center;
            padding: 120px 0 80px; margin-top: var(--nav-height);
            background: linear-gradient(135deg, #0a0e1a 0%, #111a30 50%, #0d1225 100%);
            overflow: hidden;
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15; z-index: 0;
        }
        .page-banner::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 26, 0.85) 0%, rgba(13, 18, 37, 0.7) 100%);
            z-index: 1;
        }
        .banner-content { position: relative; z-index: 2; }
        .banner-content h1 { font-size: 3rem; font-weight: 900; margin-bottom: 16px; letter-spacing: -0.02em; }
        .banner-content p { font-size: 1.1rem; max-width: 600px; color: var(--text-secondary); margin-bottom: 24px; }
        .banner-stats { display: flex; gap: 40px; margin-top: 32px; flex-wrap: wrap; }
        .banner-stat-item { text-align: left; }
        .banner-stat-item .num { font-size: 2rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .banner-stat-item .label { font-size: 0.85rem; color: var(--text-muted); }

        /* Neon glow lines */
        .neon-line { width: 60px; height: 3px; background: var(--accent); border-radius: 4px; margin-bottom: 20px; box-shadow: 0 0 20px var(--accent); }

        /* ===== Section ===== */
        .section-block { padding: 80px 0; position: relative; }
        .section-block.alt-bg { background: var(--bg-section-alt); }
        .section-block.dark-bg { background: var(--bg-section); }

        /* ===== Category Grid ===== */
        .cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .cat-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            border: 1px solid var(--border-color); padding: 28px 20px;
            text-align: center; transition: var(--transition); cursor: pointer;
        }
        .cat-card:hover { background: var(--bg-card-hover); border-color: var(--border-glow); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
        .cat-card .icon { font-size: 2.5rem; margin-bottom: 12px; display: block; }
        .cat-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
        .cat-card p { font-size: 0.82rem; color: var(--text-muted); }

        /* ===== News / Article List ===== */
        .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .news-card { background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border-color); overflow: hidden; transition: var(--transition); }
        .news-card:hover { background: var(--bg-card-hover); border-color: var(--border-glow); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
        .news-card .news-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .news-card .news-body { padding: 20px; }
        .news-card .news-body .badge { margin-bottom: 10px; }
        .news-card .news-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
        .news-card .news-body h3 a { color: var(--text-main); }
        .news-card .news-body h3 a:hover { color: var(--accent); }
        .news-card .news-body p { font-size: 0.88rem; color: var(--text-secondary); }
        .news-card .news-meta { display: flex; align-items: center; gap: 16px; margin-top: 14px; font-size: 0.8rem; color: var(--text-muted); }

        /* ===== Featured / Highlight ===== */
        .featured-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 28px; }
        .featured-main { background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border-color); overflow: hidden; transition: var(--transition); }
        .featured-main:hover { border-color: var(--border-glow); box-shadow: var(--shadow-glow); }
        .featured-main img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .featured-main .featured-body { padding: 28px; }
        .featured-main .featured-body h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 12px; }
        .featured-main .featured-body p { font-size: 0.95rem; }
        .featured-side { display: flex; flex-direction: column; gap: 16px; }
        .featured-side-item { display: flex; gap: 16px; background: var(--bg-card); border-radius: var(--radius-md); padding: 16px; border: 1px solid var(--border-color); transition: var(--transition); }
        .featured-side-item:hover { background: var(--bg-card-hover); border-color: var(--border-glow); }
        .featured-side-item img { width: 80px; height: 80px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
        .featured-side-item .side-text h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
        .featured-side-item .side-text h4 a { color: var(--text-main); }
        .featured-side-item .side-text h4 a:hover { color: var(--accent); }
        .featured-side-item .side-text .meta { font-size: 0.78rem; color: var(--text-muted); }

        /* ===== Stats / Data ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card { background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border-color); padding: 32px 20px; text-align: center; transition: var(--transition); }
        .stat-card:hover { border-color: var(--border-glow); transform: translateY(-2px); }
        .stat-card .stat-num { font-size: 2.6rem; font-weight: 900; color: var(--accent); line-height: 1.2; }
        .stat-card .stat-label { font-size: 0.9rem; color: var(--text-secondary); margin-top: 6px; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--border-color); margin-bottom: 12px; overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--border-glow); }
        .faq-question { padding: 18px 24px; font-weight: 600; font-size: 1rem; color: var(--text-main); cursor: pointer; display: flex; justify-content: space-between; align-items: center; background: none; border: none; width: 100%; text-align: left; font-family: var(--font-body); }
        .faq-question i { transition: transform 0.3s; color: var(--accent); font-size: 0.85rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 18px; font-size: 0.92rem; color: var(--text-secondary); line-height: 1.8; display: none; }
        .faq-answer.open { display: block; }

        /* ===== CTA ===== */
        .cta-block { background: linear-gradient(135deg, var(--bg-card) 0%, #1a2540 100%); border-radius: var(--radius-xl); border: 1px solid var(--border-glow); padding: 60px 48px; text-align: center; position: relative; overflow: hidden; }
        .cta-block::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.06; z-index: 0; }
        .cta-block * { position: relative; z-index: 1; }
        .cta-block h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; }
        .cta-block p { font-size: 1.05rem; margin-bottom: 28px; max-width: 520px; margin-left: auto; margin-right: auto; }

        /* ===== Footer ===== */
        .site-footer {
            background: #070b16; border-top: 1px solid var(--border-color);
            padding: 60px 0 30px; margin-top: 0;
        }
        .footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { font-size: 1.2rem; margin-bottom: 12px; display: inline-flex; }
        .footer-brand p { font-size: 0.88rem; color: var(--text-muted); max-width: 300px; line-height: 1.7; }
        .footer-col h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
        .footer-col a { display: block; font-size: 0.88rem; color: var(--text-secondary); padding: 5px 0; }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-col a i { margin-right: 8px; width: 16px; text-align: center; }
        .footer-socials a { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: rgba(255, 255, 255, 0.05); color: var(--text-secondary); margin-right: 8px; font-size: 1rem; }
        .footer-socials a:hover { background: rgba(0, 229, 255, 0.15); color: var(--accent); padding-left: 0; }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.06); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: var(--text-muted); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cat-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .featured-grid { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-links { position: fixed; top: var(--nav-height); left: 0; width: 100%; background: rgba(10, 14, 26, 0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 20px; gap: 8px; border-bottom: 1px solid var(--border-color); transform: translateY(-120%); opacity: 0; transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); pointer-events: none; }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .nav-links a { width: 100%; text-align: center; padding: 12px; }
            .nav-links a.active::after { display: none; }
            .nav-links a.nav-cta { margin-top: 8px; }

            .page-banner { min-height: 320px; padding: 100px 0 60px; }
            .banner-content h1 { font-size: 2rem; }
            .banner-stats { gap: 20px; }
            .banner-stat-item .num { font-size: 1.5rem; }

            .section-block { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }

            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            .cta-block { padding: 40px 24px; }
            .cta-block h2 { font-size: 1.5rem; }
        }

        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .logo { font-size: 1.1rem; }
            .cat-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .banner-content h1 { font-size: 1.6rem; }
            .banner-stats { flex-direction: column; gap: 12px; }
            .featured-side-item { flex-direction: column; }
            .featured-side-item img { width: 100%; height: auto; aspect-ratio: 16/9; }
        }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--max-width); padding-left: 24px; padding-right: 24px; }
        .cell { margin-bottom: 0; }
        .grid-x { margin-left: -12px; margin-right: -12px; }
        .grid-x > .cell { padding-left: 12px; padding-right: 12px; }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #00e5c8;
            --color-primary-dark: #00b8a0;
            --color-primary-glow: rgba(0, 229, 200, 0.35);
            --color-accent: #ff6b35;
            --color-accent-glow: rgba(255, 107, 53, 0.3);
            --color-bg: #0b0f1a;
            --color-bg-alt: #111827;
            --color-bg-card: #1a1f2e;
            --color-bg-card-hover: #232a3d;
            --color-text: #f0f4f8;
            --color-text-soft: #b0bccf;
            --color-text-muted: #6b7a92;
            --color-border: #2a3348;
            --color-border-light: #3a455e;
            --color-success: #22c55e;
            --color-warning: #f59e0b;
            --color-error: #ef4444;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(0, 229, 200, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
        }
        a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-primary-dark); }
        a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--color-text); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1em; color: var(--color-text-soft); }
        ::selection { background: var(--color-primary); color: var(--color-bg); }

        /* ===== 容器 ===== */
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== 顶部导航 (暗色霓虹风格) ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-h);
            background: rgba(11, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.35rem; font-weight: 800;
            color: var(--color-text);
            letter-spacing: 0.5px;
            display: flex; align-items: center; gap: 10px;
            text-decoration: none;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover { opacity: 0.85; }
        .logo i { font-size: 1.2rem; -webkit-text-fill-color: var(--color-primary); color: var(--color-primary); }

        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-links a:hover { color: var(--color-text); background: rgba(255,255,255,0.06); }
        .nav-links a.active {
            color: var(--color-primary);
            background: rgba(0, 229, 200, 0.1);
            box-shadow: inset 0 -2px 0 var(--color-primary), 0 0 20px rgba(0, 229, 200, 0.08);
        }
        .nav-links a.active::after {
            content: ''; position: absolute; bottom: -1px; left: 50%; transform: translateX(-50%);
            width: 60%; height: 2px; background: var(--color-primary);
            box-shadow: 0 0 12px var(--color-primary-glow);
            border-radius: 2px;
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: var(--color-bg);
            font-weight: 700;
            padding: 8px 24px;
            border-radius: var(--radius-md);
            box-shadow: 0 4px 16px rgba(0, 229, 200, 0.25);
            margin-left: 8px;
        }
        .nav-links a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 229, 200, 0.35);
            color: var(--color-bg);
        }
        .nav-links a.nav-cta i { margin-right: 6px; font-size: 0.85rem; }

        .menu-toggle { display: none; font-size: 1.6rem; color: var(--color-text); padding: 6px 10px; cursor: pointer; }

        @media (max-width: 820px) {
            .menu-toggle { display: block; }
            .nav-links {
                position: fixed; top: var(--header-h); left: 0; right: 0;
                background: rgba(11, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column; padding: 20px 24px; gap: 4px;
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-120%); opacity: 0;
                pointer-events: none; transition: var(--transition);
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .nav-links a.nav-cta { margin-left: 0; margin-top: 8px; text-align: center; }
            .nav-links a.active::after { display: none; }
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            margin-top: var(--header-h);
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0b0f1a 0%, #162033 60%, #0f1a2e 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--color-border);
        }
        .page-banner::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute; bottom: 0; left: 0; right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--color-bg), transparent);
        }
        .page-banner .container { position: relative; z-index: 2; text-align: center; }
        .page-banner h1 {
            font-size: 3rem;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--color-text), var(--color-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--color-text-soft);
            max-width: 680px;
            margin: 0 auto 24px;
        }
        .page-banner .breadcrumb {
            display: flex; justify-content: center; gap: 8px;
            font-size: 0.9rem; color: var(--color-text-muted);
        }
        .page-banner .breadcrumb a { color: var(--color-primary); }
        .page-banner .breadcrumb span { color: var(--color-text-soft); }

        @media (max-width: 768px) {
            .page-banner { padding: 70px 0 50px; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner p { font-size: 1rem; }
        }

        /* ===== 分类导航标签 ===== */
        .category-tabs {
            padding: 32px 0 8px;
            background: var(--color-bg);
            position: sticky; top: var(--header-h); z-index: 50;
            border-bottom: 1px solid var(--color-border);
        }
        .category-tabs .container { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
        .category-tabs a {
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            text-decoration: none;
        }
        .category-tabs a:hover { border-color: var(--color-primary); color: var(--color-primary); background: rgba(0,229,200,0.06); }
        .category-tabs a.active {
            background: var(--color-primary);
            color: var(--color-bg);
            border-color: var(--color-primary);
            box-shadow: 0 4px 20px rgba(0,229,200,0.25);
        }

        /* ===== 通用板块 ===== */
        .section { padding: 70px 0; }
        .section-alt { background: var(--color-bg-alt); }
        .section-title {
            text-align: center; margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--color-text), var(--color-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title p {
            color: var(--color-text-muted);
            max-width: 580px; margin: 0 auto;
            font-size: 1.05rem;
        }
        @media (max-width: 768px) {
            .section { padding: 50px 0; }
            .section-title h2 { font-size: 1.7rem; }
            .section-title { margin-bottom: 32px; }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }
        @media (max-width: 720px) {
            .card-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition);
            display: flex; flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .card-img {
            width: 100%; height: 200px;
            object-fit: cover;
            display: block;
            background: var(--color-bg-alt);
        }
        .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .card-body h3 { font-size: 1.2rem; margin-bottom: 10px; }
        .card-body h3 a { color: var(--color-text); }
        .card-body h3 a:hover { color: var(--color-primary); }
        .card-body p { font-size: 0.95rem; color: var(--color-text-soft); flex: 1; margin-bottom: 16px; }
        .card-meta {
            display: flex; justify-content: space-between; align-items: center;
            font-size: 0.85rem; color: var(--color-text-muted);
            border-top: 1px solid var(--color-border);
            padding-top: 14px; margin-top: auto;
        }
        .card-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0,229,200,0.12);
            color: var(--color-primary);
        }

        /* ===== 特色专栏 (图文交替) ===== */
        .feature-row {
            display: flex; gap: 48px; align-items: center;
            margin-bottom: 60px;
        }
        .feature-row:last-child { margin-bottom: 0; }
        .feature-row.reverse { flex-direction: row-reverse; }
        .feature-row .feature-img {
            flex: 0 0 48%;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .feature-row .feature-img img { width: 100%; height: 320px; object-fit: cover; display: block; }
        .feature-row .feature-text { flex: 1; }
        .feature-row .feature-text h3 { font-size: 1.6rem; margin-bottom: 16px; }
        .feature-row .feature-text p { font-size: 1rem; }
        .feature-row .feature-text .badge-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
        .feature-row .feature-text .badge {
            padding: 5px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(0,229,200,0.08);
            color: var(--color-primary);
            border: 1px solid rgba(0,229,200,0.15);
        }

        @media (max-width: 860px) {
            .feature-row, .feature-row.reverse { flex-direction: column; gap: 24px; }
            .feature-row .feature-img { flex: 0 0 100%; width: 100%; }
            .feature-row .feature-img img { height: 220px; }
            .feature-row .feature-text h3 { font-size: 1.3rem; }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 16px;
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .stat-item:hover { border-color: var(--color-primary); box-shadow: var(--shadow-glow); }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-label { font-size: 0.95rem; color: var(--color-text-soft); margin-top: 6px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr 1fr; } }

        /* ===== 列表样式 ===== */
        .content-list { display: flex; flex-direction: column; gap: 16px; }
        .list-item {
            display: flex; align-items: center; gap: 18px;
            padding: 18px 22px;
            background: var(--color-bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .list-item:hover { border-color: var(--color-border-light); transform: translateX(4px); }
        .list-icon { font-size: 1.4rem; color: var(--color-primary); flex-shrink: 0; width: 40px; text-align: center; }
        .list-content { flex: 1; }
        .list-content h4 { font-size: 1.05rem; margin-bottom: 4px; }
        .list-content p { font-size: 0.9rem; color: var(--color-text-muted); margin: 0; }
        .list-meta { font-size: 0.8rem; color: var(--color-text-muted); flex-shrink: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--color-border-light); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-text);
            display: flex; justify-content: space-between; align-items: center;
            cursor: pointer;
            user-select: none;
        }
        .faq-question i { color: var(--color-primary); transition: var(--transition); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: linear-gradient(135deg, rgba(0,229,200,0.08), rgba(255,107,53,0.06));
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute; top: -50%; right: -30%;
            width: 400px; height: 400px;
            background: radial-gradient(circle, rgba(0,229,200,0.06), transparent 70%);
            border-radius: 50%;
        }
        .cta-block h2 { font-size: 2rem; margin-bottom: 12px; position: relative; z-index: 1; }
        .cta-block p { font-size: 1.05rem; color: var(--color-text-soft); max-width: 520px; margin: 0 auto 28px; position: relative; z-index: 1; }
        .cta-block .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            text-decoration: none;
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: var(--color-bg);
            box-shadow: 0 4px 20px rgba(0,229,200,0.25);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 36px rgba(0,229,200,0.35); color: var(--color-bg); }
        .btn-secondary {
            background: transparent;
            color: var(--color-text);
            border: 1px solid var(--color-border-light);
        }
        .btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-3px); }
        @media (max-width: 768px) {
            .cta-block { padding: 36px 24px; }
            .cta-block h2 { font-size: 1.5rem; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo { font-size: 1.3rem; margin-bottom: 12px; display: inline-block; }
        .footer-brand p { font-size: 0.9rem; color: var(--color-text-muted); max-width: 320px; }
        .footer-col h4 {
            font-size: 0.95rem;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            border-bottom: 1px solid var(--color-border);
            padding-bottom: 10px;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--color-text-soft);
            padding: 5px 0;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover { color: var(--color-primary); padding-left: 4px; }
        .footer-col a i { width: 20px; margin-right: 6px; color: var(--color-primary); }
        .footer-socials a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 38px; height: 38px;
            border-radius: 50%;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            color: var(--color-text-soft);
            font-size: 1.1rem;
            margin-right: 8px;
            padding: 0;
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--color-primary); color: var(--color-bg); border-color: var(--color-primary); transform: translateY(-3px); }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            flex-wrap: wrap; gap: 8px;
        }
        @media (max-width: 860px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 16px; }
        .mt-2 { margin-top: 32px; }
        .mb-1 { margin-bottom: 16px; }
        .mb-2 { margin-bottom: 32px; }
        .gap-1 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== 移动端微调 ===== */
        @media (max-width: 520px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.5rem; }
            .card-body { padding: 18px; }
            .card-img { height: 160px; }
            .btn { padding: 12px 28px; font-size: 0.95rem; }
        }

        /* 自定义滚动条 */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--color-bg); }
        ::-webkit-scrollbar-thumb { background: var(--color-border-light); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }