/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #0b1a2e;
            --color-primary-light: #132d4a;
            --color-primary-lighter: #1e4060;
            --color-accent: #f0a500;
            --color-accent-hover: #d49400;
            --color-accent-light: rgba(240, 165, 0, 0.12);
            --color-bg: #ffffff;
            --color-bg-alt: #f4f6fa;
            --color-bg-card: #ffffff;
            --color-bg-dark: #0b1a2e;
            --color-text: #1a1a2e;
            --color-text-light: #5a6a7e;
            --color-text-lighter: #8a9aa8;
            --color-border: #e2e6ed;
            --color-border-light: #eff1f5;
            --color-success: #10b981;
            --color-error: #ef4444;
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --shadow-accent: 0 8px 32px rgba(240, 165, 0, 0.25);
            --transition: all 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; transition: var(--transition); }
        input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 0.75rem 1rem; transition: var(--transition); background: var(--color-bg); color: var(--color-text); }
        input:focus, textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px var(--color-accent-light); }
        ul, ol { list-style: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--color-primary); }
        h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); letter-spacing: -0.015em; }
        h3 { font-size: clamp(1.3rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        .section-subtitle { font-size: 1rem; color: var(--color-text-light); max-width: 600px; margin: 0.5rem auto 0; }
        .text-accent { color: var(--color-accent); }
        .text-center { text-align: center; }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border-light);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-logo i { color: var(--color-accent); font-size: 1.5rem; }
        .site-logo span { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .main-nav { display: flex; align-items: center; gap: 2rem; }
        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            padding: 0.4rem 0;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: var(--transition);
        }
        .main-nav a:hover { color: var(--color-primary); }
        .main-nav a:hover::after { width: 100%; }
        .main-nav a.active { color: var(--color-primary); font-weight: 600; }
        .main-nav a.active::after { width: 100%; }
        .nav-cta {
            background: var(--color-accent);
            color: var(--color-primary) !important;
            padding: 0.55rem 1.5rem !important;
            border-radius: var(--radius-sm);
            font-weight: 600 !important;
            font-size: 0.9rem !important;
        }
        .nav-cta::after { display: none !important; }
        .nav-cta:hover { background: var(--color-accent-hover) !important; transform: translateY(-1px); box-shadow: var(--shadow-accent); }
        .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
        .hamburger span { display: block; width: 26px; height: 2.5px; background: var(--color-primary); border-radius: 4px; transition: var(--transition); }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                padding: 1.5rem 2rem 2.5rem;
                gap: 1.2rem;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-md);
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .main-nav a { font-size: 1.1rem; padding: 0.6rem 0; }
            .nav-cta { text-align: center; padding: 0.8rem !important; }
        }

        /* ===== Hero ===== */
        .hero {
            padding: calc(var(--header-height) + 60px) 0 80px;
            background: linear-gradient(135deg, var(--color-primary) 0%, #0f2a44 50%, #193a5a 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content { max-width: 780px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(240, 165, 0, 0.15);
            color: var(--color-accent);
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(240, 165, 0, 0.20);
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 { color: #fff; margin-bottom: 1.2rem; }
        .hero h1 .highlight { color: var(--color-accent); }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin-bottom: 2.2rem;
            line-height: 1.8;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--color-accent);
            color: var(--color-primary);
            font-weight: 700;
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            transition: var(--transition);
            border: none;
        }
        .btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-accent); }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: transparent;
            color: #fff;
            font-weight: 500;
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
        }
        .btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); background: rgba(240, 165, 0, 0.08); }
        .hero-stats { display: flex; gap: 2.5rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(255, 255, 255, 0.08); }
        .hero-stat-item { }
        .hero-stat-item .num { font-size: 1.8rem; font-weight: 800; color: #fff; line-height: 1.2; }
        .hero-stat-item .num .accent { color: var(--color-accent); }
        .hero-stat-item .label { font-size: 0.85rem; color: rgba(255, 255, 255, 0.55); margin-top: 0.2rem; }
        @media (max-width: 768px) {
            .hero { padding: calc(var(--header-height) + 40px) 0 60px; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
            .hero-stat-item .num { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { width: 100%; justify-content: center; }
        }

        /* ===== Section通用 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--color-bg-alt); }
        .section-dark { background: var(--color-bg-dark); color: rgba(255, 255, 255, 0.85); }
        .section-header { margin-bottom: 3rem; }
        .section-header h2 { margin-bottom: 0.5rem; }
        .section-header p { color: var(--color-text-light); max-width: 600px; margin: 0 auto; }
        .section-dark .section-header h2 { color: #fff; }
        .section-dark .section-header p { color: rgba(255, 255, 255, 0.6); }

        /* ===== Features ===== */
        .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .feature-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-accent-light); }
        .feature-icon {
            width: 52px;
            height: 52px;
            background: var(--color-accent-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-accent);
            margin-bottom: 1.2rem;
        }
        .feature-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
        .feature-card p { font-size: 0.92rem; color: var(--color-text-light); line-height: 1.6; }
        @media (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .features-grid { grid-template-columns: 1fr; } }

        /* ===== Category Cards ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .category-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-accent); }
        .category-card-top { padding: 2rem 2rem 1.5rem; flex: 1; }
        .category-card .cat-icon {
            width: 48px;
            height: 48px;
            background: var(--color-accent-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-accent);
            margin-bottom: 1rem;
        }
        .category-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
        .category-card p { font-size: 0.92rem; color: var(--color-text-light); line-height: 1.7; }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 1rem;
            transition: var(--transition);
        }
        .category-card .card-link:hover { gap: 0.7rem; }
        .category-card .card-foot {
            padding: 1rem 2rem;
            border-top: 1px solid var(--color-border-light);
            font-size: 0.85rem;
            color: var(--color-text-lighter);
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .category-card .card-foot i { font-size: 0.75rem; }
        @media (max-width: 768px) { .category-grid { grid-template-columns: 1fr; } }

        /* ===== Posts / News List ===== */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-sm);
            padding: 1.5rem 2rem;
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
        }
        .news-item:hover { border-color: var(--color-accent-light); box-shadow: var(--shadow-sm); transform: translateX(4px); }
        .news-tag {
            flex-shrink: 0;
            background: var(--color-accent-light);
            color: var(--color-accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            white-space: nowrap;
            margin-top: 0.2rem;
        }
        .news-item .news-body { flex: 1; min-width: 0; }
        .news-item .news-body h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.3rem; color: var(--color-primary); }
        .news-item .news-body h4 a { color: inherit; }
        .news-item .news-body h4 a:hover { color: var(--color-accent); }
        .news-item .news-body p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-meta { display: flex; align-items: center; gap: 1rem; margin-top: 0.5rem; font-size: 0.82rem; color: var(--color-text-lighter); }
        .news-meta i { font-size: 0.7rem; margin-right: 0.2rem; }
        .news-empty { text-align: center; padding: 3rem 2rem; color: var(--color-text-lighter); background: var(--color-bg-card); border-radius: var(--radius-sm); border: 1px dashed var(--color-border); }
        @media (max-width: 640px) {
            .news-item { flex-direction: column; gap: 0.8rem; padding: 1.2rem 1.2rem; }
            .news-tag { align-self: flex-start; }
        }

        /* ===== Stats / Data ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card {
            text-align: center;
            padding: 2rem 1rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .stat-card:hover { background: rgba(255, 255, 255, 0.08); transform: translateY(-2px); }
        .stat-card .num { font-size: 2.4rem; font-weight: 800; color: var(--color-accent); line-height: 1.2; }
        .stat-card .label { font-size: 0.9rem; color: rgba(255, 255, 255, 0.6); margin-top: 0.3rem; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .stats-grid { grid-template-columns: 1fr 1fr; } }

        /* ===== Steps / Process ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(to right, var(--color-accent), var(--color-accent-light), transparent);
            z-index: 0;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: 2rem 1.2rem;
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-num {
            width: 52px;
            height: 52px;
            background: var(--color-accent);
            color: var(--color-primary);
            font-size: 1.3rem;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.25);
        }
        .step-card h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
        .step-card p { font-size: 0.88rem; color: var(--color-text-light); line-height: 1.6; }
        @media (max-width: 1024px) { .steps-grid { grid-template-columns: repeat(2, 1fr); } .steps-grid::before { display: none; } }
        @media (max-width: 520px) { .steps-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(--color-bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--color-accent-light); }
        .faq-question {
            padding: 1.2rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { color: var(--color-accent); }
        .faq-question i { font-size: 0.85rem; color: var(--color-text-lighter); transition: var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--color-accent); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer { max-height: 300px; padding: 0 1.5rem 1.2rem; }
        @media (max-width: 640px) {
            .faq-question { padding: 1rem 1.2rem; font-size: 0.95rem; }
            .faq-answer { padding: 0 1.2rem; }
            .faq-item.open .faq-answer { padding: 0 1.2rem 1rem; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, #132d4a 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: clamp(1.8rem, 4vw, 2.4rem); margin-bottom: 0.8rem; }
        .cta-section p { color: rgba(255, 255, 255, 0.7); max-width: 560px; margin: 0 auto 2rem; font-size: 1.05rem; }
        .cta-section .btn-primary { font-size: 1.05rem; padding: 1rem 2.8rem; }
        .cta-section .btn-primary:hover { box-shadow: 0 12px 40px rgba(240, 165, 0, 0.35); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .site-logo { color: #fff; margin-bottom: 0.8rem; }
        .footer-brand .site-logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255, 255, 255, 0.55); max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 1rem; font-weight: 600; }
        .footer-col ul li { margin-bottom: 0.6rem; }
        .footer-col ul li a { font-size: 0.88rem; color: rgba(255, 255, 255, 0.55); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--color-accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a { color: rgba(255, 255, 255, 0.5); }
        .footer-bottom a:hover { color: var(--color-accent); }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== 回到顶部 ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            background: var(--color-accent);
            color: var(--color-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: var(--shadow-md);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: var(--transition);
            z-index: 999;
        }
        .back-top.visible { opacity: 1; transform: translateY(0); pointer-events: all; }
        .back-top:hover { background: var(--color-accent-hover); transform: translateY(-4px); box-shadow: var(--shadow-accent); }

        /* ===== 滚动渐入 ===== */
        .fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .fade-up.visible { opacity: 1; transform: translateY(0); }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .section { padding: 60px 0; }
        }
        @media (max-width: 768px) {
            .section { padding: 48px 0; }
            .section-header { margin-bottom: 2rem; }
        }
        @media (max-width: 520px) {
            .section { padding: 36px 0; }
            .news-item .news-body h4 { font-size: 0.95rem; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9e;
            --primary-dark: #0f2444;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-body: #f5f7fc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a8;
            --text-white: #ffffff;
            --border: #e2e6f0;
            --border-light: #f0f2f8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 58, 107, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 58, 107, 0.10);
            --shadow-lg: 0 12px 48px rgba(26, 58, 107, 0.14);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; padding: 0; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.2rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(26,58,107,0.04);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .site-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.35rem; font-weight: 800; color: var(--primary);
            letter-spacing: -0.5px; white-space: nowrap;
        }
        .site-logo i { font-size: 1.6rem; color: var(--accent); }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a {
            position: relative; display: inline-flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
            transition: background var(--transition), color var(--transition);
        }
        .main-nav a:hover { background: rgba(26,58,107,0.06); color: var(--primary); }
        .main-nav a.active { color: var(--primary); font-weight: 600; }
        .main-nav a.active::after {
            content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; border-radius: 3px; background: var(--accent);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark) !important; font-weight: 700;
            padding: 8px 22px; border-radius: var(--radius-md);
            box-shadow: 0 4px 12px rgba(232,168,56,0.30);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .main-nav a.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,56,0.40); }
        .main-nav a.nav-cta::after { display: none; }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--primary); cursor: pointer; padding: 4px; }

        /* ===== 文章详情 ===== */
        .article-detail { padding: 48px 0 64px; }
        .article-detail .container { max-width: 860px; }
        .article-header { margin-bottom: 36px; }
        .article-meta {
            display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px;
            margin-bottom: 16px; font-size: 0.9rem; color: var(--text-muted);
        }
        .article-meta .category-badge {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            background: rgba(26,58,107,0.08); color: var(--primary);
            font-size: 0.8rem; font-weight: 600; letter-spacing: 0.3px;
        }
        .article-meta .date { display: flex; align-items: center; gap: 6px; }
        .article-meta .date i { font-size: 0.85rem; }
        .article-title {
            font-size: 2.4rem; font-weight: 800; line-height: 1.25;
            color: var(--text-primary); margin-bottom: 12px;
        }
        .article-desc {
            font-size: 1.1rem; color: var(--text-secondary);
            line-height: 1.6; padding-left: 4px; border-left: 4px solid var(--accent); padding-left: 16px;
        }
        .article-body {
            background: var(--bg-white); border-radius: var(--radius-lg);
            padding: 40px 44px; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-body p { margin-bottom: 1.2rem; font-size: 1.05rem; line-height: 1.8; }
        .article-body h2, .article-body h3 { margin-top: 1.6em; margin-bottom: 0.6em; }
        .article-body ul, .article-body ol { padding-left: 1.8rem; margin-bottom: 1.2rem; }
        .article-body li { margin-bottom: 0.4rem; color: var(--text-secondary); list-style: disc; }
        .article-body ol li { list-style: decimal; }
        .article-body blockquote {
            border-left: 4px solid var(--accent); background: rgba(232,168,56,0.06);
            padding: 16px 20px; margin: 1.2rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary); font-style: normal;
        }
        .article-body img { margin: 1.2rem auto; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
        .article-body a { color: var(--primary-light); border-bottom: 1px solid transparent; }
        .article-body a:hover { border-bottom-color: var(--accent); color: var(--accent); }
        .article-footer-bar {
            display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
            margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--border);
        }
        .article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .article-tags .tag {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            background: var(--bg-body); color: var(--text-secondary); font-size: 0.8rem; font-weight: 500;
            transition: background var(--transition), color var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: var(--text-white); }
        .article-back { display: inline-flex; align-items: center; gap: 8px; color: var(--text-muted); font-size: 0.95rem; }
        .article-back:hover { color: var(--primary); }
        .article-not-found {
            text-align: center; padding: 80px 24px;
        }
        .article-not-found i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; display: block; }
        .article-not-found h2 { font-size: 2rem; margin-bottom: 12px; }
        .article-not-found p { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found .btn { display: inline-block; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: var(--radius-md);
            font-size: 1rem; font-weight: 600; border: none; cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
        }
        .btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: var(--text-white); box-shadow: 0 4px 16px rgba(26,58,107,0.25); }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(26,58,107,0.35); color: var(--text-white); }
        .btn-accent { background: linear-gradient(135deg, var(--accent), var(--accent-light)); color: var(--primary-dark); box-shadow: 0 4px 16px rgba(232,168,56,0.30); }
        .btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,168,56,0.40); color: var(--primary-dark); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.75);
            padding: 48px 0 24px; margin-top: 16px;
        }
        .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
        .footer-brand .site-logo { color: var(--text-white); font-size: 1.2rem; margin-bottom: 14px; }
        .footer-brand .site-logo i { color: var(--accent); }
        .footer-brand .site-logo span { -webkit-text-fill-color: var(--text-white); background: none; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); line-height: 1.7; margin-top: 12px; }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; font-weight: 700; margin-bottom: 16px; letter-spacing: 0.5px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: color var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px;
            display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
            font-size: 0.85rem; color: rgba(255,255,255,0.35);
        }
        .footer-bottom span { margin: 4px 0; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-title { font-size: 2rem; }
            .article-body { padding: 32px 28px; }
        }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .main-nav {
                position: fixed; top: var(--header-height); left: 0; right: 0;
                background: rgba(255,255,255,0.98); backdrop-filter: blur(12px);
                flex-direction: column; padding: 16px 24px; gap: 4px;
                border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md);
                transform: translateY(-120%); opacity: 0; pointer-events: none;
                transition: transform 0.35s ease, opacity 0.35s ease;
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .main-nav a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .main-nav a.active::after { left: 16px; transform: none; width: 24px; }
            .main-nav a.nav-cta { justify-content: center; margin-top: 8px; }
            .article-detail { padding: 28px 0 40px; }
            .article-title { font-size: 1.6rem; }
            .article-body { padding: 20px 16px; }
            .article-desc { font-size: 1rem; padding-left: 12px; }
            .article-meta { gap: 8px 16px; font-size: 0.85rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; gap: 6px; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-title { font-size: 1.35rem; }
            .article-body { padding: 16px 12px; }
            .article-body p { font-size: 0.98rem; }
            .article-meta { gap: 6px 12px; font-size: 0.8rem; }
            .site-logo { font-size: 1.1rem; }
            .site-logo i { font-size: 1.3rem; }
        }

        /* ===== 额外辅助 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-wrap { flex-wrap: wrap; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --accent-light: #f7c948;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-light: #f1f3f5;
            --bg-dark: #1a1a2e;
            --text-dark: #1a1a2e;
            --text-body: #2b2d42;
            --text-muted: #6c757d;
            --text-light: #f8f9fa;
            --border-color: #e9ecef;
            --border-light: #f0f0f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 36px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
        }
        p {
            margin-bottom: 1rem;
        }
        p:last-child {
            margin-bottom: 0;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 板块间距 ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 16px auto 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header p {
                font-size: 1rem;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn i {
            font-size: 0.9em;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(29, 53, 87, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-dark);
            text-decoration: none;
            letter-spacing: -0.3px;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            color: var(--text-dark);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            position: relative;
            padding: 8px 16px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .main-nav a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.1);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .main-nav .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            margin-left: 8px;
        }
        .main-nav .nav-cta i {
            margin-right: 4px;
        }
        .main-nav .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .main-nav .nav-cta::after {
            display: none;
        }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger:hover span {
            background: var(--primary);
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .main-nav a.active::after {
                bottom: 4px;
                width: 30px;
            }
            .main-nav .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(6px, -6px);
            }
        }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 50%, var(--secondary-light) 100%);
            padding: 80px 0 72px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero h1 i {
            color: var(--accent-light);
            margin-right: 12px;
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .hero-actions .btn {
            padding: 14px 32px;
            font-size: 1rem;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
            color: #fff;
        }
        .hero-stat .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-light);
            display: block;
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero {
                padding: 48px 0 40px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
            }
            .hero-stat .num {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
        }

        /* ===== 分类入口卡片 (赛事分类) ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .category-card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: rgba(230, 57, 70, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .category-card:hover .icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .category-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .category-card .tag {
            display: inline-block;
            margin-top: 12px;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            border-radius: 20px;
        }

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

        /* ===== 热门赛事推荐 ===== */
        .event-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .event-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .event-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .event-card .card-img {
            height: 180px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .event-card .card-img i {
            font-size: 3rem;
            color: rgba(255, 255, 255, 0.2);
        }
        .event-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            background: var(--primary);
            color: #fff;
        }
        .event-card .card-img .badge.live {
            background: #2ecc71;
            animation: pulse-badge 2s infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }
        .event-card .card-body {
            padding: 20px 20px 24px;
        }
        .event-card .card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .event-card .card-body .meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .event-card .card-body .meta i {
            margin-right: 4px;
            width: 16px;
        }
        .event-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin-bottom: 16px;
        }
        .event-card .card-body .btn {
            width: 100%;
        }

        @media (max-width: 1024px) {
            .event-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .event-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 观赛流程 ===== */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
        }
        .flow-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            z-index: 0;
        }
        .flow-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .flow-step .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .flow-step h4 {
            font-size: 1rem;
            margin-bottom: 8px;
        }
        .flow-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .flow-grid::before {
                display: none;
            }
        }
        @media (max-width: 420px) {
            .flow-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-card .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1.2;
        }
        .stat-card .num i {
            font-size: 1.8rem;
            margin-right: 6px;
            color: var(--accent);
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 8px;
            display: block;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-card .num {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 420px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }
        .faq-question:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: -2px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            padding: 16px 40px;
            font-size: 1.05rem;
            border-radius: var(--radius-sm);
        }
        .cta-section .btn:hover {
            background: var(--bg-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
        }
        @media (max-width: 600px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section .btn {
                width: 100%;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .footer-brand .site-logo span {
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            line-height: 1.7;
            margin-top: 12px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 20px 0 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-dark);
            font-weight: 500;
        }
        .breadcrumb .sep {
            color: var(--border-color);
            font-size: 0.8rem;
        }

        /* ===== 标签 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 12px;
        }
        .tag-item {
            display: inline-block;
            padding: 6px 18px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--secondary);
            background: rgba(29, 53, 87, 0.06);
            border-radius: 20px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: default;
        }
        .tag-item:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }

        /* ===== 分割线 ===== */
        .divider {
            width: 100%;
            height: 1px;
            background: var(--border-color);
            margin: 16px 0;
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            :root {
                --header-height: 64px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
            }
        }

        /* 回到顶部 */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            pointer-events: none;
            z-index: 999;
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .back-to-top:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        @media (max-width: 520px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #e8b830;
            --accent-light: #f0d060;
            --accent-dark: #c9a020;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f2440;
            --bg-section-alt: #f0f2f8;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-light: #8899aa;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

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

        /* ===== 排版 ===== */
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin: 0 auto;
        }

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 184, 48, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(232, 184, 48, 0.25);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--text-white);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        .btn-accent-outline {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-accent-outline:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 184, 48, 0.25);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 0.9rem;
        }

        .btn-lg {
            padding: 18px 42px;
            font-size: 1.1rem;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(15, 36, 64, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1000;
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.02em;
            transition: var(--transition);
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-logo:hover {
            color: var(--accent);
        }
        .site-logo span {
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }
        .main-nav a.active {
            color: var(--text-white);
            background: rgba(232, 184, 48, 0.18);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
        }

        .main-nav .nav-cta {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
        }
        .main-nav .nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(232, 184, 48, 0.3);
        }
        .main-nav .nav-cta::after {
            display: none;
        }
        .main-nav .nav-cta i {
            font-size: 0.9rem;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== Hero ===== */
        .page-hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 184, 48, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.03em;
            line-height: 1.2;
        }
        .page-hero h1 i {
            color: var(--accent);
        }

        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 28px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
        }
        .hero-breadcrumb a:hover {
            color: var(--accent);
        }
        .hero-breadcrumb span {
            color: rgba(255, 255, 255, 0.8);
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 80px 0;
        }

        .section-block-alt {
            background: var(--bg-section-alt);
        }

        .section-block-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-block-dark .section-title {
            color: var(--text-white);
        }
        .section-block-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 32px 28px;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            background: rgba(232, 184, 48, 0.12);
            margin-bottom: 18px;
        }

        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .card .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(232, 184, 48, 0.12);
            color: var(--accent-dark);
            margin-top: 12px;
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* ===== 步骤 / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step-counter;
        }

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .step-card::before {
            counter-increment: step-counter;
            content: counter(step-counter);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(232, 184, 48, 0.3);
        }

        .step-card .step-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 16px;
            margin-top: 4px;
        }

        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 700px;
            height: 700px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 184, 48, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-block .container {
            position: relative;
            z-index: 1;
        }

        .cta-block h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 580px;
            margin: 0 auto 32px;
        }

        .cta-block .btn {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        /* ===== 安全提示区 ===== */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .safety-card {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
            text-align: center;
        }
        .safety-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        .safety-card i {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .safety-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .safety-card p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .content-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 22px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .content-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--accent);
        }

        .content-item .num {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent);
            min-width: 36px;
            line-height: 1.4;
        }

        .content-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .content-item p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== 标签 ===== */
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .tag-item {
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .tag-item:hover {
            border-color: var(--accent);
            color: var(--accent-dark);
            background: rgba(232, 184, 48, 0.06);
        }
        .tag-item.active {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .site-logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }

            .menu-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(15, 36, 64, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                display: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                width: 100%;
                text-align: center;
                font-size: 1rem;
            }
            .main-nav a.active::after {
                bottom: 6px;
            }
            .main-nav .nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }

            .page-hero {
                padding: 110px 0 60px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

            .section-block {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }

            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-block h2 {
                font-size: 1.8rem;
            }
            .cta-block p {
                font-size: 1rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .page-hero h1 {
                font-size: 1.6rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .card {
                padding: 24px 20px;
            }

            .step-card {
                padding: 24px 18px;
            }

            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.9rem;
            }

            .cta-block .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }

            .content-item {
                flex-direction: column;
                gap: 8px;
                padding: 16px;
            }
            .content-item .num {
                font-size: 1.1rem;
            }
        }

        /* ===== 工具类 ===== */
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }