/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --gold: #D4A84B;
            --gold-light: #E8C67A;
            --gold-dark: #B8922E;
            --bg-dark: #0B0B1A;
            --bg-card: #12122A;
            --bg-card-hover: #1A1A3A;
            --bg-glass: rgba(11, 11, 26, 0.72);
            --bg-glass-light: rgba(255, 255, 255, 0.06);
            --text-white: #F5F5F7;
            --text-gold: #D4A84B;
            --text-muted: #9A9AB0;
            --text-dim: #6B6B85;
            --border-glass: rgba(212, 168, 75, 0.18);
            --border-card: rgba(212, 168, 75, 0.10);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 40px rgba(212, 168, 75, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --transition: 0.32s cubic-bezier(0.22, 0.61, 0.36, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --header-h: 76px;
        }

        /* ===== 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(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; color: inherit; }
        button { cursor: pointer; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; letter-spacing: 0.01em; }
        .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 640px) { .container { padding: 0 16px; } }

        /* ===== Glass Header ===== */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: var(--bg-glass);
            backdrop-filter: blur(18px) saturate(1.6);
            -webkit-backdrop-filter: blur(18px) saturate(1.6);
            border-bottom: 1px solid var(--border-glass);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 11, 26, 0.92);
            box-shadow: 0 4px 40px rgba(0,0,0,0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--gold);
            letter-spacing: 0.06em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i { font-size: 24px; color: var(--gold-light); }
        .logo span { background: linear-gradient(135deg, var(--gold-light), var(--gold-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-list a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.02em;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0;
            width: 0; height: 2px;
            background: var(--gold);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-list a:hover { color: var(--text-white); }
        .nav-list a:hover::after { width: 100%; }
        .nav-list a.active { color: var(--gold); }
        .nav-list a.active::after { width: 100%; }

        .nav-cta {
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            color: var(--bg-dark) !important;
            padding: 10px 26px !important;
            border-radius: 50px;
            font-weight: 700;
            font-size: 14px !important;
            letter-spacing: 0.04em;
            box-shadow: 0 4px 20px rgba(212, 168, 75, 0.25);
            transition: var(--transition);
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(212, 168, 75, 0.35); color: var(--bg-dark) !important; }
        .nav-cta::after { display: none !important; }

        .menu-toggle { display: none; font-size: 26px; color: var(--gold); background: none; border: none; cursor: pointer; }

        @media (max-width: 768px) {
            .nav-list { display: none; flex-direction: column; background: rgba(11,11,26,0.98); backdrop-filter: blur(20px); position: absolute; top: var(--header-h); left: 0; right: 0; padding: 24px 20px 32px; gap: 20px; border-bottom: 1px solid var(--border-glass); }
            .nav-list.open { display: flex; }
            .menu-toggle { display: block; }
            .header-inner { padding: 0 16px; }
            .logo { font-size: 18px; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11,11,26,0.30) 0%, rgba(11,11,26,0.78) 100%);
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11,11,26,0.20) 0%, rgba(11,11,26,0.60) 60%, var(--bg-dark) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(212, 168, 75, 0.15);
            border: 1px solid rgba(212, 168, 75, 0.30);
            padding: 6px 22px;
            border-radius: 50px;
            font-size: 13px;
            color: var(--gold-light);
            letter-spacing: 0.08em;
            margin-bottom: 28px;
            text-transform: uppercase;
        }
        .hero h1 {
            font-size: clamp(40px, 8vw, 80px);
            font-weight: 900;
            line-height: 1.08;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #F5E6C8, var(--gold-light), var(--gold-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(18px, 2.2vw, 26px);
            color: var(--text-muted);
            margin-bottom: 32px;
            font-weight: 400;
            letter-spacing: 0.03em;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-countdown {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .countdown-item {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(212,168,75,0.15);
            border-radius: var(--radius-md);
            padding: 14px 22px;
            min-width: 80px;
            text-align: center;
            backdrop-filter: blur(6px);
        }
        .countdown-item .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.1;
            display: block;
        }
        .countdown-item .label {
            font-size: 12px;
            color: var(--text-dim);
            letter-spacing: 0.06em;
            margin-top: 4px;
            display: block;
        }
        .hero-actions {
            display: flex;
            gap: 18px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            color: var(--bg-dark);
            font-weight: 700;
            font-size: 17px;
            padding: 16px 42px;
            border-radius: 50px;
            box-shadow: 0 6px 30px rgba(212,168,75,0.30);
            transition: var(--transition);
            letter-spacing: 0.03em;
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 48px rgba(212,168,75,0.40); }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(212,168,75,0.25);
            color: var(--text-white);
            font-weight: 600;
            font-size: 17px;
            padding: 16px 36px;
            border-radius: 50px;
            transition: var(--transition);
            letter-spacing: 0.03em;
        }
        .btn-secondary:hover { background: rgba(212,168,75,0.12); border-color: var(--gold); transform: translateY(-3px); }
        .hero-scroll {
            position: absolute;
            bottom: 36px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            color: var(--text-dim);
            font-size: 14px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            animation: float 2.6s ease-in-out infinite;
        }
        .hero-scroll i { font-size: 20px; }
        @keyframes float { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(10px); } }

        /* ===== Section Shared ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark { background: var(--bg-card); }
        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title h2 {
            font-size: clamp(30px, 4vw, 44px);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }
        .section-title .accent-line {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), var(--gold-light));
            border-radius: 4px;
            margin: 16px auto 0;
        }
        @media (max-width: 768px) { .section { padding: 56px 0; } .section-title { margin-bottom: 36px; } }

        /* ===== Intro / About ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .intro-text h3 {
            font-size: 28px;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 20px;
        }
        .intro-text p {
            color: var(--text-muted);
            margin-bottom: 16px;
            font-size: 16px;
            line-height: 1.8;
        }
        .intro-text .highlight-list {
            margin-top: 20px;
            display: grid;
            gap: 12px;
        }
        .intro-text .highlight-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-white);
            font-weight: 500;
        }
        .intro-text .highlight-list li i { color: var(--gold); font-size: 18px; width: 24px; text-align: center; }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; }
        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glass);
            pointer-events: none;
        }
        @media (max-width: 768px) { .intro-grid { grid-template-columns: 1fr; gap: 32px; } .intro-image img { height: 260px; } }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 36px 24px 28px;
            text-align: center;
            position: relative;
            transition: var(--transition);
            counter-increment: step;
        }
        .step-card:hover { background: var(--bg-card-hover); transform: translateY(-6px); box-shadow: var(--shadow-glow); border-color: rgba(212,168,75,0.20); }
        .step-card .step-num {
            font-size: 48px;
            font-weight: 900;
            color: rgba(212,168,75,0.10);
            line-height: 1;
            position: absolute;
            top: 12px;
            right: 18px;
        }
        .step-card .icon { font-size: 38px; color: var(--gold); margin-bottom: 18px; display: block; }
        .step-card h4 { font-size: 20px; font-weight: 700; margin-bottom: 10px; color: var(--text-white); }
        .step-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
        @media (max-width: 900px) { .steps-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .steps-grid { grid-template-columns: 1fr; } }

        /* ===== Features / Advantages ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: var(--transition);
        }
        .feature-card:hover { background: var(--bg-card-hover); transform: translateY(-4px); box-shadow: var(--shadow-glow); border-color: rgba(212,168,75,0.18); }
        .feature-card .icon {
            width: 56px; height: 56px;
            border-radius: var(--radius-sm);
            background: rgba(212,168,75,0.10);
            display: flex; align-items: center; justify-content: center;
            font-size: 26px; color: var(--gold);
            margin-bottom: 18px;
        }
        .feature-card h4 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
        .feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
        @media (max-width: 900px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .features-grid { grid-template-columns: 1fr; } }

        /* ===== News / CMS List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-glow); border-color: rgba(212,168,75,0.18); }
        .news-card .thumb {
            width: 100%; height: 200px;
            object-fit: cover;
            display: block;
        }
        .news-card .body { padding: 22px 20px 24px; }
        .news-card .tag {
            display: inline-block;
            background: rgba(212,168,75,0.12);
            color: var(--gold);
            font-size: 12px;
            padding: 3px 14px;
            border-radius: 50px;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }
        .news-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text-white); line-height: 1.4; }
        .news-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card .meta { display: flex; align-items: center; gap: 14px; margin-top: 14px; font-size: 13px; color: var(--text-dim); }
        .news-card .meta i { font-size: 12px; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--text-dim);
            font-size: 17px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-card);
        }
        @media (max-width: 900px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .news-grid { grid-template-columns: 1fr; } }

        /* ===== Categories / Topics ===== */
        .cats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .cat-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            border: 1px solid var(--border-glass);
            transition: var(--transition);
        }
        .cat-card:hover { transform: scale(1.02); box-shadow: var(--shadow-glow); }
        .cat-card img {
            position: absolute;
            inset: 0;
            width: 100%; height: 100%;
            object-fit: cover;
            z-index: 0;
        }
        .cat-card .overlay {
            position: relative;
            z-index: 1;
            padding: 32px 24px 24px;
            width: 100%;
            background: linear-gradient(0deg, rgba(11,11,26,0.92) 30%, rgba(11,11,26,0.10) 100%);
        }
        .cat-card h4 { font-size: 22px; font-weight: 800; color: var(--gold); margin-bottom: 6px; }
        .cat-card p { font-size: 14px; color: var(--text-muted); }
        .cat-card .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--gold);
            border: 1px solid rgba(212,168,75,0.30);
            padding: 8px 22px;
            border-radius: 50px;
            transition: var(--transition);
        }
        .cat-card .btn-outline:hover { background: rgba(212,168,75,0.12); border-color: var(--gold); }
        @media (max-width: 900px) { .cats-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .cats-grid { grid-template-columns: 1fr; } }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(212,168,75,0.15); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            cursor: pointer;
            user-select: none;
            gap: 16px;
        }
        .faq-question i { color: var(--gold); font-size: 18px; transition: var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(212,168,75,0.06), rgba(11,11,26,0.90)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11,11,26,0.60);
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-content h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-content .btn-primary { font-size: 19px; padding: 18px 52px; }

        /* ===== Footer ===== */
        .site-footer {
            background: #08081A;
            border-top: 1px solid rgba(212,168,75,0.06);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { font-size: 20px; margin-bottom: 12px; }
        .footer-brand p { color: var(--text-dim); font-size: 14px; line-height: 1.8; max-width: 300px; }
        .footer-col h5 { font-size: 14px; font-weight: 700; color: var(--text-white); margin-bottom: 16px; letter-spacing: 0.04em; text-transform: uppercase; }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-dim);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--gold); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.04);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
        }
        .footer-bottom a { color: var(--text-dim); }
        .footer-bottom a:hover { color: var(--gold); }
        @media (max-width: 768px) { .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; } }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 30px; right: 30px;
            width: 48px; height: 48px;
            border-radius: 50%;
            background: var(--gold);
            color: var(--bg-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 4px 24px rgba(212,168,75,0.25);
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: var(--transition);
        }
        .back-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
        .back-top:hover { transform: translateY(-4px); box-shadow: 0 8px 36px rgba(212,168,75,0.35); }

        /* ===== Utilities ===== */
        .text-gold { color: var(--gold); }
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #d4a017;
            --primary-light: #f0c850;
            --primary-dark: #b8860b;
            --secondary: #1a1a2e;
            --secondary-light: #2a2a4e;
            --accent: #e8c36a;
            --bg-dark: #0d0d1a;
            --bg-card: #12122a;
            --bg-section: #0f0f22;
            --text-light: #f5f0e8;
            --text-muted: #b8b0a4;
            --text-dim: #7a7268;
            --border-glow: rgba(212, 160, 23, 0.25);
            --border-subtle: rgba(255, 215, 100, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 28px;
            --radius-xl: 40px;
            --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 40px rgba(212, 160, 23, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 76px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #fff;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        ::selection {
            background: var(--primary);
            color: #0d0d1a;
        }
        :focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 3px;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 玻璃导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(13, 13, 26, 0.55);
            backdrop-filter: blur(18px) saturate(1.2);
            -webkit-backdrop-filter: blur(18px) saturate(1.2);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.3);
        }
        .site-header.scrolled {
            background: rgba(13, 13, 26, 0.88);
            border-bottom-color: var(--border-glow);
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
            filter: drop-shadow(0 0 8px rgba(212, 160, 23, 0.4));
        }
        .logo span {
            background: linear-gradient(135deg, #f5e6c8, var(--primary-light), #d4a017);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-list li a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-list li a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-list li a:hover {
            color: var(--text-light);
            background: rgba(212, 160, 23, 0.08);
        }
        .nav-list li a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-list li a.active {
            color: var(--primary-light);
            background: rgba(212, 160, 23, 0.12);
        }
        .nav-list li a.active::after {
            transform: translateX(-50%) scaleX(1);
            background: var(--primary-light);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary)) !important;
            color: #0d0d1a !important;
            font-weight: 700 !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 4px 20px rgba(212, 160, 23, 0.3);
            transition: var(--transition) !important;
        }
        .nav-cta i {
            margin-right: 6px;
        }
        .nav-cta:hover {
            transform: translateY(-2px) !important;
            box-shadow: 0 8px 30px rgba(212, 160, 23, 0.45) !important;
            background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
            color: #0d0d1a !important;
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-toggle {
            display: none;
            font-size: 26px;
            color: var(--text-light);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(13, 13, 26, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-subtle);
                box-shadow: var(--shadow-lg);
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list li a {
                display: block;
                padding: 14px 18px;
                font-size: 17px;
                border-radius: var(--radius-sm);
                width: 100%;
                text-align: center;
            }
            .nav-list li a::after {
                bottom: 4px;
            }
            .nav-cta {
                margin-top: 8px;
                text-align: center;
            }
            .nav-toggle {
                display: block;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 22px;
            }
        }
        @media (max-width: 480px) {
            .logo span {
                font-size: 16px;
            }
            .header-inner {
                padding: 0 12px;
            }
        }

        /* ===== Hero ===== */
        .hero-category {
            position: relative;
            min-height: 68vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.28;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1.15);
            }
        }
        .hero-category .overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(13, 13, 26, 0.3) 0%, rgba(13, 13, 26, 0.85) 80%);
            z-index: 1;
        }
        .hero-category .hero-content {
            position: relative;
            z-index: 2;
            max-width: 880px;
        }
        .hero-category .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 160, 23, 0.15);
            border: 1px solid var(--border-glow);
            padding: 6px 20px;
            border-radius: 60px;
            font-size: 14px;
            color: var(--primary-light);
            letter-spacing: 0.5px;
            margin-bottom: 28px;
            backdrop-filter: blur(6px);
        }
        .hero-category .hero-badge i {
            font-size: 16px;
        }
        .hero-category h1 {
            font-size: clamp(36px, 7vw, 68px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: var(--text-light);
            text-shadow: 0 4px 40px rgba(0, 0, 0, 0.5);
            margin-bottom: 20px;
        }
        .hero-category h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--primary), #f5e6c8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-category .hero-desc {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.7;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }
        .hero-category .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px 60px;
            margin-top: 12px;
        }
        .hero-category .hero-stat {
            text-align: center;
        }
        .hero-category .hero-stat .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-light);
            display: block;
            line-height: 1.2;
        }
        .hero-category .hero-stat .label {
            font-size: 14px;
            color: var(--text-dim);
            letter-spacing: 0.3px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-section);
        }
        .section-card {
            background: var(--bg-card);
        }
        .section-title {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 700;
            line-height: 1.2;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text-light);
        }
        .section-title .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-sub {
            text-align: center;
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        /* ===== 步骤流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-dark), var(--primary-light), var(--primary));
            opacity: 0;
            transition: var(--transition);
        }
        .step-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }
        .step-card:hover::before {
            opacity: 1;
        }
        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(212, 160, 23, 0.2), rgba(212, 160, 23, 0.08));
            border: 1px solid var(--border-glow);
            color: var(--primary-light);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .step-card:hover .step-number {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0d0d1a;
            box-shadow: 0 0 30px rgba(212, 160, 23, 0.3);
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-light);
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .step-card .step-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 14px;
            display: block;
        }

        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .step-card {
                padding: 24px 18px;
            }
        }

        /* ===== 注册方式 ===== */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .method-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .method-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .method-card .method-icon {
            font-size: 40px;
            color: var(--primary);
            margin-bottom: 18px;
            display: block;
            transition: var(--transition);
        }
        .method-card:hover .method-icon {
            transform: scale(1.1);
            filter: drop-shadow(0 0 20px rgba(212, 160, 23, 0.3));
        }
        .method-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-light);
        }
        .method-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .method-card .tag {
            display: inline-block;
            margin-top: 14px;
            background: rgba(212, 160, 23, 0.12);
            color: var(--primary-light);
            padding: 4px 16px;
            border-radius: 60px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            border: 1px solid var(--border-glow);
        }

        @media (max-width: 768px) {
            .methods-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 优势数据 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .advantage-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 20px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .advantage-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .advantage-card .adv-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 14px;
            display: block;
        }
        .advantage-card .adv-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary-light);
            display: block;
            line-height: 1.2;
        }
        .advantage-card .adv-label {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 4px;
            display: block;
        }
        @media (max-width: 1024px) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .advantages-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 内容卡片 ===== */
        .content-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }
        .content-card .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }
        .content-card:hover .card-img {
            transform: scale(1.03);
        }
        .content-card .card-body {
            padding: 24px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-tag {
            display: inline-block;
            background: rgba(212, 160, 23, 0.12);
            color: var(--primary-light);
            padding: 2px 14px;
            border-radius: 60px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            border: 1px solid var(--border-glow);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .content-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .content-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }
        .content-card .card-link {
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .content-card .card-link i {
            font-size: 12px;
            transition: var(--transition);
        }
        .content-card .card-link:hover {
            color: #fff;
        }
        .content-card .card-link:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 1024px) {
            .content-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .content-cards {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(212, 160, 23, 0.04);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 280px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            text-align: center;
            padding: 80px 24px;
        }
        .cta-section h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #0d0d1a;
            font-weight: 700;
            font-size: 18px;
            padding: 16px 40px;
            border-radius: var(--radius-sm);
            box-shadow: 0 8px 30px rgba(212, 160, 23, 0.3);
            transition: var(--transition);
            border: none;
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(212, 160, 23, 0.45);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #0d0d1a;
        }
        .cta-btn i {
            font-size: 20px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0a0a1a;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-dim);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 13px;
            color: var(--text-dim);
        }
        .footer-bottom a {
            color: var(--text-dim);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }

        /* ===== 通用按钮 ===== */
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-glow);
            color: var(--primary-light);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            background: transparent;
        }
        .btn-outline:hover {
            background: rgba(212, 160, 23, 0.1);
            border-color: var(--primary);
            color: var(--text-light);
            transform: translateY(-2px);
        }

        /* ===== 页面内间距 ===== */
        .gap-lg {
            gap: 40px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-40 {
            margin-top: 40px;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .hero-category {
                min-height: 56vh;
                padding: 100px 16px 60px;
            }
            .hero-category .hero-stats {
                gap: 24px 32px;
            }
            .hero-category .hero-stat .num {
                font-size: 26px;
            }
        }
        @media (max-width: 480px) {
            .hero-category {
                min-height: 50vh;
                padding: 80px 12px 40px;
            }
            .hero-category .hero-stats {
                gap: 16px 20px;
            }
            .hero-category .hero-stat .num {
                font-size: 22px;
            }
            .section-title {
                font-size: 24px;
            }
        }

        /* ===== 分隔线装饰 ===== */
        .divider {
            width: 80px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
            border-radius: 4px;
            margin: 0 auto 32px;
        }

        /* ===== 返回顶部 ===== */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #0d0d1a;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 24px rgba(212, 160, 23, 0.35);
            transition: var(--transition);
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
        }
        .scroll-top.show {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }
        .scroll-top:hover {
            background: var(--primary-light);
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(212, 160, 23, 0.5);
        }

/* roulang page: article */
/* ===== :root 设计变量 ===== */
:root {
    --primary: #d4a017;
    --primary-light: #f0c75e;
    --primary-dark: #b8860b;
    --secondary: #1a1a2e;
    --secondary-light: #2d2d44;
    --accent: #e94560;
    --bg-dark: #0d0d1a;
    --bg-card: #151528;
    --bg-section: #111122;
    --bg-light: #f8f7f4;
    --text-light: #f0ede8;
    --text-muted: #a09888;
    --text-body: #2c2c2c;
    --border-subtle: rgba(212, 160, 23, 0.2);
    --border-card: rgba(212, 160, 23, 0.15);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
    --shadow-hover: 0 16px 48px rgba(212,160,23,0.15);
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 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-text-size-adjust: 100%; }
body {
    font-family: var(--font-sans);
    color: var(--text-body);
    background: var(--bg-dark);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
/* ===== 容器 ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}
/* ===== 玻璃导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(13, 13, 26, 0.72);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border-bottom: 1px solid var(--border-subtle);
    transition: var(--transition);
}
.site-header.scrolled {
    background: rgba(13, 13, 26, 0.94);
    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(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 0.5px;
}
.logo i { color: var(--primary); font-size: 1.6rem; }
.logo span { background: linear-gradient(135deg, var(--primary-light), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-list {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-list li a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 40px;
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(240, 237, 232, 0.8);
    transition: var(--transition);
    position: relative;
}
.nav-list li a:hover { color: var(--text-light); background: rgba(212, 160, 23, 0.12); }
.nav-list li a.active { color: var(--primary); background: rgba(212, 160, 23, 0.15); }
.nav-list li a.active::after { display: none; }
.nav-list li a.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #1a1a2e;
    font-weight: 600;
    padding: 8px 22px;
    border-radius: 40px;
    box-shadow: 0 4px 16px rgba(212,160,23,0.3);
}
.nav-list li a.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212,160,23,0.4); color: #0d0d1a; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; background: none; border: none; }
.nav-toggle span { width: 28px; height: 2.5px; background: var(--text-light); border-radius: 4px; transition: var(--transition); }
/* ===== 文章主体内容区 ===== */
.article-wrapper {
    padding-top: calc(var(--nav-height) + 40px);
    padding-bottom: 70px;
    background: var(--bg-section);
    min-height: 100vh;
}
.article-banner {
    position: relative;
    height: 320px;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-bottom: 50px;
}
.article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13,13,26,0.82) 0%, rgba(13,13,26,0.55) 100%);
    z-index: 1;
}
.article-banner-content {
    position: relative;
    z-index: 2;
    max-width: 780px;
    padding: 0 24px;
}
.article-banner-content .cat-badge {
    display: inline-block;
    background: var(--primary);
    color: #1a1a2e;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 40px;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.article-banner-content h1 {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--text-light);
    line-height: 1.3;
    margin-bottom: 12px;
}
.article-meta-bar {
    display: flex;
    justify-content: center;
    gap: 24px;
    color: rgba(240,237,232,0.7);
    font-size: 0.9rem;
}
.article-meta-bar i { margin-right: 6px; color: var(--primary); }
/* ===== 文章正文 ===== */
.article-main {
    max-width: 860px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-card);
    padding: 48px 56px;
    box-shadow: var(--shadow-card);
}
.article-body {
    font-size: 1.05rem;
    line-height: 1.9;
    color: rgba(240,237,232,0.92);
}
.article-body p { margin-bottom: 1.4em; }
.article-body h2 { font-size: 1.6rem; margin-top: 2em; margin-bottom: 0.8em; color: var(--primary-light); }
.article-body h3 { font-size: 1.3rem; margin-top: 1.6em; margin-bottom: 0.6em; color: var(--text-light); }
.article-body ul, .article-body ol { padding-left: 1.6em; margin-bottom: 1.4em; }
.article-body li { margin-bottom: 0.5em; list-style: disc; color: rgba(240,237,232,0.85); }
.article-body a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: #fff; }
.article-body blockquote {
    border-left: 4px solid var(--primary);
    padding: 16px 24px;
    margin: 1.6em 0;
    background: rgba(212,160,23,0.06);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: rgba(240,237,232,0.85);
    font-style: italic;
}
.article-body img { border-radius: var(--radius-md); margin: 1.6em auto; box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--border-card);
}
.article-tags .tag {
    display: inline-block;
    background: rgba(212,160,23,0.1);
    color: var(--primary-light);
    padding: 6px 16px;
    border-radius: 40px;
    font-size: 0.85rem;
    border: 1px solid var(--border-subtle);
    transition: var(--transition);
}
.article-tags .tag:hover { background: var(--primary); color: #1a1a2e; border-color: var(--primary); }
.article-nav-links {
    display: flex;
    justify-content: space-between;
    margin-top: 48px;
    padding-top: 28px;
    border-top: 1px solid var(--border-card);
    gap: 20px;
}
.article-nav-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(240,237,232,0.7);
    font-size: 0.95rem;
    transition: var(--transition);
}
.article-nav-links a:hover { color: var(--primary-light); }
.article-nav-links .back-home { color: var(--primary); font-weight: 500; }
.article-nav-links .back-home:hover { color: var(--primary-light); }
.not-found-box {
    text-align: center;
    padding: 80px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-card);
}
.not-found-box i { font-size: 3.6rem; color: var(--primary); margin-bottom: 20px; }
.not-found-box h2 { font-size: 1.8rem; color: var(--text-light); margin-bottom: 12px; }
.not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
.not-found-box .btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #1a1a2e;
    padding: 12px 32px;
    border-radius: 40px;
    font-weight: 600;
    transition: var(--transition);
}
.not-found-box .btn-back:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,160,23,0.3); }
/* ===== 页脚 ===== */
.site-footer {
    background: var(--secondary);
    border-top: 1px solid var(--border-subtle);
    padding: 60px 0 30px;
    color: rgba(240,237,232,0.75);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand .logo { font-size: 1.3rem; margin-bottom: 16px; }
.footer-brand p { font-size: 0.92rem; line-height: 1.7; color: var(--text-muted); max-width: 360px; }
.footer-col h5 { color: var(--text-light); font-size: 0.95rem; font-weight: 600; margin-bottom: 18px; letter-spacing: 0.5px; }
.footer-col a {
    display: block;
    color: rgba(240,237,232,0.6);
    font-size: 0.9rem;
    padding: 4px 0;
    transition: var(--transition);
}
.footer-col a:hover { color: var(--primary-light); padding-left: 6px; }
.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: 0.85rem;
    color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .article-main { padding: 36px 32px; }
    .article-banner-content h1 { font-size: 2rem; }
}
@media (max-width: 768px) {
    .nav-list { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(13,13,26,0.98); backdrop-filter: blur(20px); padding: 16px 24px 24px; border-bottom: 1px solid var(--border-subtle); gap: 6px; }
    .nav-list.open { display: flex; }
    .nav-list li a { width: 100%; justify-content: center; padding: 12px 18px; }
    .nav-list li a.nav-cta { width: auto; }
    .nav-toggle { display: flex; }
    .article-banner { height: 240px; }
    .article-banner-content h1 { font-size: 1.5rem; }
    .article-meta-bar { flex-wrap: wrap; gap: 12px; font-size: 0.8rem; }
    .article-main { padding: 24px 18px; border-radius: var(--radius-md); }
    .article-body { font-size: 1rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
    .article-nav-links { flex-direction: column; align-items: center; gap: 12px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .header-inner { padding: 0 16px; }
    .logo { font-size: 1.1rem; gap: 6px; }
    .logo i { font-size: 1.2rem; }
    .article-banner { height: 200px; }
    .article-banner-content h1 { font-size: 1.25rem; }
    .article-main { padding: 18px 14px; }
    .article-body h2 { font-size: 1.3rem; }
    .article-body h3 { font-size: 1.1rem; }
}