/* roulang page: index */
:root {
            --primary: #1F4E79;
            --primary-action: #2A5FA0;
            --blue-light: #E8EFF7;
            --ink: #17202B;
            --accent: #B08A3E;
            --bg: #F6F8FA;
            --card: #FFFFFF;
            --border: #E2E8F0;
            --warning: #C25E4C;
            --disabled: #9AA7B2;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 2px rgba(16, 36, 64, .04), 0 4px 16px rgba(16, 36, 64, .05);
            --shadow-hover: 0 12px 28px rgba(16, 36, 64, .08);
            --transition: .2s ease;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; }
        button, input, select, textarea { font: inherit; border: none; outline: none; background: none; }
        ul, ol { list-style: none; margin: 0; padding: 0; }
        h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; color: var(--primary); }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section-pad { padding: 96px 0; }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 68px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            transition: box-shadow .25s ease;
        }
        .site-header.scrolled { box-shadow: 0 2px 12px rgba(16, 36, 64, .06); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; max-width: 1280px; margin: 0 auto; padding: 0 24px; }
        .header-left { display: flex; align-items: center; flex-shrink: 0; }
        .brand { display: flex; align-items: center; gap: 10px; }
        .brand-mark {
            width: 36px; height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 16px;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(31, 78, 121, .25);
        }
        .brand-text { font-size: 17px; font-weight: 700; color: var(--primary); letter-spacing: -0.01em; white-space: nowrap; }
        .header-nav { display: flex; align-items: center; gap: 4px; margin-left: 32px; }
        .header-nav a {
            display: block;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: #4A5568;
            transition: all var(--transition);
        }
        .header-nav a:hover { background: var(--blue-light); color: var(--primary); }
        .header-nav a.active { background: var(--blue-light); color: var(--primary); font-weight: 600; }
        .header-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .search-box {
            position: relative;
            display: flex; align-items: center;
            width: 240px; height: 36px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 0 12px;
            transition: border-color var(--transition), box-shadow var(--transition), width .25s ease;
        }
        .search-box:focus-within {
            border-color: var(--primary-action);
            box-shadow: 0 0 0 3px rgba(42, 95, 160, .12);
            width: 280px;
            background: #fff;
        }
        .search-box i { color: var(--disabled); font-size: 13px; margin-right: 8px; }
        .search-box input { flex: 1; font-size: 13px; color: var(--ink); background: transparent; }
        .search-box input::placeholder { color: var(--disabled); }
        .search-kbd {
            font-size: 11px;
            color: var(--disabled);
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 4px;
            padding: 1px 6px;
            margin-left: 6px;
            font-weight: 600;
        }
        .header-cta { background: var(--primary); color: #fff; border-radius: 10px; padding: 8px 18px; font-size: 13px; font-weight: 600; transition: all var(--transition); box-shadow: 0 2px 6px rgba(31, 78, 121, .18); cursor: pointer; }
        .header-cta:hover { background: var(--primary-action); transform: translateY(-1px); box-shadow: 0 4px 10px rgba(31, 78, 121, .25); }
        .header-cta:active { transform: scale(.97); }
        .menu-toggle { display: none; width: 40px; height: 40px; border-radius: 8px; background: var(--bg); color: var(--primary); font-size: 16px; cursor: pointer; align-items: center; justify-content: center; }
        .menu-toggle:hover { background: var(--blue-light); }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(180deg, #EEF3F8 0%, var(--bg) 100%);
            overflow: hidden;
        }
        .hero-grid { display: flex; align-items: center; gap: 48px; }
        .hero-left { flex: 0 0 55%; max-width: 55%; }
        .hero-right { flex: 0 0 45%; max-width: 45%; position: relative; }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 18px;
        }
        .hero-eyebrow::before { content: ''; width: 28px; height: 2px; background: var(--accent); border-radius: 2px; display: inline-block; }
        .hero h1 {
            font-size: clamp(36px, 4.2vw, 44px);
            line-height: 1.15;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: #4A5568;
            font-weight: 400;
            max-width: 480px;
            margin-bottom: 28px;
        }
        .hero-actions { display: flex; gap: 14px; margin-bottom: 36px; flex-wrap: wrap; }
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; border-radius: 10px; transition: all var(--transition); cursor: pointer; border: none; }
        .btn:focus-visible, .search-box input:focus-visible, .form-input:focus-visible { outline: 2px solid rgba(42, 95, 160, .5); outline-offset: 2px; }
        .btn-lg { height: 56px; padding: 0 32px; font-size: 15px; border-radius: 12px; }
        .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 10px rgba(31, 78, 121, .18); }
        .btn-primary:hover { background: var(--primary-action); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(31, 78, 121, .25); }
        .btn-primary:active { transform: scale(.97); }
        .btn-primary .gold-dot { width: 8px; height: 8px; background: #FFD700; border-radius: 50%; display: inline-block; box-shadow: 0 0 6px rgba(255, 215, 0, .6); }
        .btn-secondary { background: #fff; color: var(--ink); border: 1px solid #CBD5E0; font-size: 15px; height: 56px; padding: 0 32px; border-radius: 12px; }
        .btn-secondary:hover { border-color: #94A3B8; box-shadow: 0 4px 12px rgba(16, 36, 64, .06); transform: translateY(-1px); }
        .btn-secondary:active { transform: scale(.97); }
        .hero-badges { display: flex; gap: 24px; flex-wrap: wrap; }
        .badge-item { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #4A5568; font-weight: 500; }
        .badge-item i { color: var(--accent); font-size: 14px; }
        .hero-visual { position: relative; border-radius: 16px; overflow: hidden; box-shadow: 0 20px 48px rgba(16, 36, 64, .12); }
        .hero-visual img { width: 100%; height: 420px; object-fit: cover; display: block; }
        .hero-data-card {
            position: absolute;
            right: -14px;
            bottom: -20px;
            background: #fff;
            border-radius: 14px;
            padding: 18px 22px;
            box-shadow: 0 16px 32px rgba(16, 36, 64, .12);
            display: flex;
            gap: 22px;
            min-width: 280px;
            border: 1px solid rgba(226, 232, 240, .6);
        }
        .data-item { text-align: center; }
        .data-item strong { display: block; font-size: 26px; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .data-item span { font-size: 12px; color: var(--disabled); display: block; margin-top: 2px; }

        /* ===== Steps ===== */
        .steps-section { background: var(--blue-light); padding: 96px 0; }
        .section-title { text-align: center; margin-bottom: 56px; }
        .section-title h2 { font-size: clamp(26px, 3vw, 32px); margin-bottom: 12px; }
        .section-title p { color: #6A7A8E; font-size: 15px; max-width: 560px; margin: 0 auto; }
        .steps-grid { display: flex; gap: 24px; position: relative; }
        .step-item { flex: 1; display: flex; gap: 18px; padding: 32px 28px; background: transparent; position: relative; }
        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -12px;
            width: 24px;
            height: 2px;
            border-top: 2px dashed rgba(176, 138, 62, .5);
            transform: translateY(-50%);
        }
        .step-num {
            font-size: 64px;
            font-weight: 800;
            line-height: 1;
            color: transparent;
            -webkit-text-stroke: 2px var(--accent);
            letter-spacing: -0.03em;
            flex-shrink: 0;
            min-width: 76px;
            text-align: center;
            opacity: .85;
        }
        .step-body h3 { font-size: 19px; font-weight: 700; color: var(--primary); margin: 6px 0 10px; }
        .step-body p { font-size: 14px; color: #5A6A7E; line-height: 1.7; }

        /* ===== Dynamic Section ===== */
        .dynamic-section { padding: 96px 0; }
        .dynamic-layout { display: flex; gap: 48px; align-items: flex-start; }
        .dynamic-news { flex: 1 1 58%; max-width: 58%; }
        .dynamic-scenes { flex: 1 1 42%; max-width: 42%; }
        .dynamics-title { font-size: clamp(24px, 2.6vw, 30px); margin-bottom: 8px; }
        .dynamics-sub { color: #6A7A8E; font-size: 14px; margin-bottom: 28px; }
        .news-list-cm { display: flex; flex-direction: column; gap: 0; border-radius: 14px; overflow: hidden; }
        .news-card {
            display: flex;
            gap: 16px;
            padding: 20px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
            align-items: center;
        }
        .news-card:first-child { border-top-left-radius: 14px; border-top-right-radius: 14px; }
        .news-card:last-child { border-bottom: none; border-bottom-left-radius: 14px; border-bottom-right-radius: 14px; }
        .news-card:hover { background: var(--blue-light); box-shadow: var(--shadow-sm); }
        .news-card-cover { flex-shrink: 0; width: 96px; height: 90px; border-radius: 8px; overflow: hidden; background: #E2E8F0; }
        .news-card-cover img { width: 100%; height: 100%; object-fit: cover; }
        .news-card-body { flex: 1; min-width: 0; }
        .news-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
        .news-tag { display: inline-block; background: var(--blue-light); color: var(--primary); font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 4px; }
        .news-date { font-size: 12px; color: var(--disabled); }
        .news-card-body h3 { font-size: 15px; font-weight: 600; color: var(--ink); line-height: 1.5; margin-bottom: 4px; transition: color var(--transition); }
        .news-card:hover .news-card-body h3 { color: var(--primary); }
        .news-card-body p { font-size: 13px; color: #7A8A9C; line-height: 1.6; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
        .empty-state { background: #fff; border-radius: 14px; padding: 48px; text-align: center; color: var(--disabled); border: 1px dashed var(--border); }
        .empty-state i { font-size: 32px; margin-bottom: 12px; display: block; color: #C0CCDA; }
        .empty-state p { font-size: 14px; }
        .scene-card {
            background: #fff;
            border-radius: 14px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            margin-bottom: 20px;
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .scene-card img { flex-shrink: 0; width: 96px; height: 86px; object-fit: cover; border-radius: 8px; }
        .scene-body h4 { font-size: 16px; font-weight: 600; color: var(--primary); margin-bottom: 6px; }
        .scene-body p { font-size: 13px; color: #6A7A8E; line-height: 1.6; }
        .scene-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }

        /* ===== Guarantee ===== */
        .guarantee-section { background: var(--ink); padding: 64px 0; }
        .guarantee-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
        .guarantee-item { display: flex; gap: 14px; align-items: flex-start; }
        .guarantee-item i { font-size: 22px; color: var(--accent); margin-top: 2px; flex-shrink: 0; }
        .guarantee-item h4 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 4px; }
        .guarantee-item p { font-size: 13px; color: #A9B8C6; line-height: 1.5; }

        /* ===== FAQ ===== */
        .faq-section { padding: 96px 0; }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item { border-bottom: 1px solid var(--border); }
        .faq-item:first-child { border-top: 1px solid var(--border); }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            width: 100%;
            padding: 22px 8px;
            cursor: pointer;
            text-align: left;
            background: transparent;
            transition: background var(--transition);
            font-weight: 600;
            font-size: 15px;
            color: var(--ink);
        }
        .faq-question:hover { background: rgba(232, 239, 247, .4); }
        .faq-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
        .faq-icon { margin-left: auto; font-size: 14px; color: var(--disabled); transition: transform var(--transition); flex-shrink: 0; }
        .faq-item.active .faq-icon { transform: rotate(45deg); color: var(--primary); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
        .faq-answer-inner { padding: 0 8px 22px 30px; color: #5A6A7E; font-size: 14px; line-height: 1.7; }

        /* ===== CTA ===== */
        .cta-section { padding: 96px 0; background: linear-gradient(180deg, var(--bg) 0%, #EDF1F5 100%); }
        .cta-layout { display: flex; gap: 56px; align-items: center; }
        .cta-left { flex: 0 0 45%; max-width: 45%; }
        .cta-right { flex: 0 0 55%; max-width: 55%; }
        .cta-left h2 { font-size: clamp(24px, 2.8vw, 32px); margin-bottom: 12px; }
        .cta-left .cta-desc { color: #5A6A7E; font-size: 14px; margin-bottom: 24px; }
        .cta-list { display: flex; flex-direction: column; gap: 14px; }
        .cta-list li { display: flex; align-items: center; gap: 12px; font-size: 14px; color: #3A4A5A; }
        .cta-list li i { color: var(--accent); font-size: 14px; width: 20px; text-align: center; }
        .cta-form-card {
            background: #fff;
            border-radius: 16px;
            padding: 36px;
            box-shadow: 0 12px 32px rgba(16, 36, 64, .08);
            border: 1px solid var(--border);
        }
        .cta-form-card .form-title { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
        .cta-form-card .form-title i { color: var(--accent); font-size: 16px; }
        .form-sub { font-size: 13px; color: var(--disabled); margin-bottom: 24px; }
        .form-group { margin-bottom: 18px; }
        .form-label { display: block; font-size: 13px; font-weight: 500; color: #3A4A5A; margin-bottom: 6px; }
        .form-input {
            width: 100%;
            height: 44px;
            border: 1px solid #CBD5E0;
            border-radius: 8px;
            padding: 0 14px;
            font-size: 14px;
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            color: var(--ink);
        }
        .form-input:focus {
            border-color: var(--primary-action);
            box-shadow: 0 0 0 3px rgba(42, 95, 160, .15);
        }
        select.form-input { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='none' stroke='%239AA7B2' stroke-width='1.5' d='M2 4l4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
        .form-btn { width: 100%; height: 46px; margin-top: 6px; }
        .form-success { display: none; background: #ECFDF5; border: 1px solid #BBF7D0; color: #14532D; padding: 12px; border-radius: 8px; font-size: 13px; text-align: center; margin-top: 12px; }
        .form-success.show { display: block; }

        /* ===== Footer ===== */
        .site-footer { background: var(--ink); color: #C9D4DE; padding: 64px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 48px; }
        .footer-brand .footer-logo { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 14px; }
        .footer-brand p { font-size: 13px; color: #A9B8C6; line-height: 1.7; max-width: 300px; }
        .footer-col h5 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul li a { font-size: 13px; color: #A9B8C6; transition: color var(--transition); }
        .footer-col ul li a:hover { color: #fff; }
        .footer-contact li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: #A9B8C6; }
        .footer-contact li i { color: var(--accent); font-size: 13px; width: 16px; }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
        .footer-bottom p { font-size: 13px; color: #7A8A9C; }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .header-nav { display: none; }
            .search-box { display: none; }
            .menu-toggle { display: flex; }
            .hero { padding: 120px 0 60px; }
            .hero-grid { flex-direction: column; gap: 40px; }
            .hero-left, .hero-right { flex: 0 0 100%; max-width: 100%; }
            .hero-visual img { height: 320px; }
            .hero-data-card { right: 10px; bottom: -16px; }
            .dynamic-layout { flex-direction: column; gap: 40px; }
            .dynamic-news, .dynamic-scenes { flex: 0 0 100%; max-width: 100%; }
            .guarantee-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
            .cta-layout { flex-direction: column; gap: 40px; }
            .cta-left, .cta-right { flex: 0 0 100%; max-width: 100%; }
            .steps-grid { flex-direction: column; gap: 28px; }
            .step-item:not(:last-child)::after { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

            .mobile-menu {
                position: fixed;
                top: 68px;
                right: -100%;
                width: 280px;
                height: calc(100vh - 68px);
                background: #fff;
                transition: right .3s ease;
                box-shadow: -4px 0 20px rgba(16, 36, 64, .08);
                z-index: 999;
                padding: 24px;
                display: flex;
                flex-direction: column;
                gap: 4px;
            }
            .mobile-menu.open { right: 0; }
            .mobile-menu a { padding: 12px 14px; border-radius: 8px; font-size: 15px; color: var(--ink); font-weight: 500; }
            .mobile-menu a:hover { background: var(--blue-light); }
            .mobile-menu a.active { background: var(--blue-light); color: var(--primary); font-weight: 600; }
            .mobile-menu .mobile-search { margin-bottom: 12px; }
        }

        @media (max-width: 639px) {
            .section-pad { padding: 60px 0; }
            .steps-section, .dynamic-section, .faq-section, .cta-section { padding: 60px 0; }
            .hero { padding: 110px 0 48px; }
            .hero h1 { font-size: 32px; }
            .hero-visual img { height: 240px; }
            .hero-data-card { min-width: 230px; padding: 14px 18px; right: 6px; bottom: -14px; gap: 14px; }
            .data-item strong { font-size: 20px; }
            .data-item span { font-size: 11px; }
            .brand-text { font-size: 14px; }
            .step-item { padding: 24px 16px; flex-direction: column; gap: 8px; }
            .step-num { font-size: 52px; text-align: left; min-width: auto; }
            .guarantee-grid { grid-template-columns: 1fr; gap: 20px; }
            .news-card { padding: 14px; gap: 12px; }
            .news-card-cover { width: 72px; height: 68px; }
            .cta-form-card { padding: 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .hero-actions { flex-direction: column; }
            .btn-lg { width: 100%; }
            .hero-badges { flex-direction: column; gap: 14px; }
        }

        @media (min-width: 1024px) {
            .mobile-menu { display: none; }
        }

/* roulang page: article */
:root {
            --primary: #1F4E79;
            --primary-action: #2A5FA0;
            --blue-light: #E8EFF7;
            --ink: #17202B;
            --accent: #B08A3E;
            --bg: #F6F8FA;
            --card-bg: #FFFFFF;
            --border: #E2E8F0;
            --warning: #C25E4C;
            --disabled: #9AA7B2;
            --shadow-sm: 0 1px 2px rgba(16,36,64,.04), 0 4px 16px rgba(16,36,64,.05);
            --shadow-lg: 0 12px 28px rgba(16,36,64,.08);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --container: 1200px;
            --fs-h1: clamp(30px, 3.6vw, 38px);
            --fs-h2: clamp(24px, 2.8vw, 30px);
            --fs-h3: clamp(18px, 2vw, 20px);
            --fs-body: 16px;
            --fs-small: 14px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            font-size: var(--fs-body);
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }

        a:hover,
        a:focus {
            outline: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 68px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(16,36,64,.03);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 100%;
        }

        .brand {
            flex-shrink: 0;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
            box-shadow: 0 3px 8px rgba(31,78,121,.22);
        }

        .brand-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            line-height: 1.3;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .header-nav a {
            padding: 8px 15px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: #3d4a5c;
            transition: background .2s, color .2s;
        }

        .header-nav a:hover {
            background: var(--blue-light);
            color: var(--primary);
        }

        .header-nav a.active {
            background: var(--blue-light);
            color: var(--primary);
            font-weight: 600;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .search-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 36px;
            padding: 0 10px 0 12px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: #f8fafc;
            width: 215px;
            font-size: 13px;
            color: #64748b;
            cursor: pointer;
            transition: border-color .2s, box-shadow .2s, background .2s;
            font-family: inherit;
        }

        .search-trigger:hover,
        .search-trigger:focus {
            border-color: var(--primary-action);
            box-shadow: 0 0 0 3px rgba(42,95,160,.12);
            background: #fff;
            outline: none;
        }

        .search-trigger i {
            font-size: 13px;
            color: #8a97a5;
        }

        .search-trigger span {
            flex: 1;
            text-align: left;
        }

        .search-trigger kbd {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 5px;
            padding: 2px 6px;
            font-size: 11px;
            color: #8a97a5;
            font-family: inherit;
            box-shadow: 0 1px 1px rgba(16,36,64,.05);
        }

        .icon-entry {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #58657a;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .2s, color .2s, border-color .2s;
            font-size: 15px;
        }

        .icon-entry:hover {
            background: var(--blue-light);
            color: var(--primary);
            border-color: transparent;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background .2s, transform .15s, box-shadow .2s, border-color .2s, color .2s;
            white-space: nowrap;
            font-family: inherit;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 10px rgba(31,78,121,.18);
        }

        .btn-primary:hover {
            background: var(--primary-action);
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(31,78,121,.22);
        }

        .btn-primary:active {
            transform: scale(.97);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(42,95,160,.35);
            outline-offset: 2px;
        }

        .btn-outline {
            background: #fff;
            border: 1px solid #CBD5E0;
            color: var(--ink);
        }

        .btn-outline:hover {
            border-color: var(--primary-action);
            color: var(--primary-action);
            box-shadow: 0 2px 8px rgba(31,78,121,.08);
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: scale(.97);
        }

        .btn-outline:focus-visible {
            outline: 3px solid rgba(42,95,160,.2);
            outline-offset: 2px;
        }

        .btn-sm {
            height: 38px;
            padding: 0 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: #fff;
            color: var(--primary);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background .2s;
            font-family: inherit;
        }

        .nav-toggle:hover {
            background: var(--blue-light);
        }

        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 13px 0;
        }

        .breadcrumb-inner {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #6b7887;
            flex-wrap: wrap;
        }

        .breadcrumb-inner a:hover {
            color: var(--primary-action);
        }

        .breadcrumb-inner .sep {
            font-size: 12px;
            color: #a3aebc;
        }

        .breadcrumb-inner .crumb-text {
            color: #5b6b7a;
        }

        .breadcrumb-inner .current {
            color: var(--primary);
            font-weight: 600;
        }

        .article-main {
            padding: 56px 0 32px;
        }

        .article-layout {
            max-width: 900px;
            margin: 0 auto;
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
            margin-bottom: 32px;
        }

        .article-heading {
            margin-bottom: 36px;
            border-bottom: 1px solid #edf1f5;
            padding-bottom: 30px;
        }

        .article-heading h1 {
            font-size: var(--fs-h1);
            line-height: 1.3;
            color: var(--ink);
            margin: 0 0 20px;
            letter-spacing: -0.015em;
            font-weight: 700;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: #4e6377;
            background: var(--blue-light);
            padding: 5px 13px;
            border-radius: 20px;
            line-height: 1.4;
            white-space: nowrap;
        }

        .meta-tag i {
            font-size: 12px;
            color: var(--primary-action);
        }

        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--ink);
            word-wrap: break-word;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid #edf1f5;
            line-height: 1.4;
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--ink);
            margin: 30px 0 12px;
            line-height: 1.4;
        }

        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin: 24px 0 10px;
        }

        .article-body p {
            margin: 0 0 18px;
            line-height: 1.85;
        }

        .article-body a {
            color: var(--primary-action);
            border-bottom: 1px solid rgba(42,95,160,.2);
            transition: border-color .2s;
        }

        .article-body a:hover {
            border-bottom-color: var(--primary-action);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 20px;
            padding-left: 22px;
        }

        .article-body li {
            margin-bottom: 8px;
            line-height: 1.7;
        }

        .article-body li::marker {
            color: var(--accent);
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 16px 22px;
            background: var(--blue-light);
            border-left: 4px solid var(--accent);
            border-radius: 0 10px 10px 0;
            color: #3d4a5c;
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body img {
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            margin: 24px auto;
        }

        .article-body figure {
            margin: 24px 0;
        }

        .article-body figcaption {
            font-size: 13px;
            color: #8a97a5;
            text-align: center;
            margin-top: 8px;
        }

        .article-body table {
            width: 100%;
            margin: 24px 0;
            border-collapse: collapse;
            font-size: 14px;
            line-height: 1.6;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-body th {
            background: var(--blue-light);
            font-weight: 600;
            color: var(--primary);
        }

        .article-body pre {
            background: var(--ink);
            color: #E8EFF7;
            padding: 20px;
            border-radius: 10px;
            overflow-x: auto;
            font-size: 14px;
            margin: 24px 0;
            line-height: 1.6;
        }

        .article-body code {
            background: var(--blue-light);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--primary);
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
            font-size: 14px;
        }

        .article-empty {
            text-align: center;
            padding: 70px 30px;
        }

        .article-empty i {
            font-size: 52px;
            color: var(--disabled);
            margin-bottom: 20px;
            display: block;
        }

        .article-empty h3 {
            font-size: 24px;
            margin: 0 0 12px;
            color: var(--ink);
        }

        .article-empty p {
            color: #6b7887;
            margin: 0 0 28px;
            max-width: 360px;
            margin-left: auto;
            margin-right: auto;
        }

        .related-section {
            padding: 48px 0 16px;
        }

        .section-head {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-head h2 {
            font-size: var(--fs-h2);
            color: var(--ink);
            margin: 0 0 10px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .section-head p {
            color: #6b7887;
            font-size: 15px;
            margin: 0;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: box-shadow .25s ease, transform .25s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .related-thumb {
            height: 150px;
            overflow: hidden;
            background: var(--blue-light);
            position: relative;
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.03);
        }

        .related-info {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-cat {
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-action);
            background: var(--blue-light);
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: .02em;
        }

        .related-info h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--ink);
            line-height: 1.45;
        }

        .related-info p {
            font-size: 13px;
            color: #6b7887;
            margin: 0 0 14px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .related-meta {
            font-size: 12px;
            color: #93a1af;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .back-links {
            display: flex;
            gap: 14px;
            justify-content: center;
            margin: 44px 0 64px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--primary);
            color: #C9D4DE;
            padding: 64px 0 0;
            margin-top: 24px;
        }

        .site-footer a {
            color: #C9D4DE;
            transition: color .2s;
        }

        .site-footer a:hover {
            color: #fff;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .brand-mark {
            background: rgba(255,255,255,.12);
            box-shadow: none;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #AABBC8;
            max-width: 320px;
            margin: 0;
        }

        .footer-col h5 {
            font-size: 15px;
            color: #fff;
            margin: 0 0 18px;
            font-weight: 600;
            letter-spacing: .01em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col li {
            margin-bottom: 10px;
            font-size: 14px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            color: var(--accent);
            width: 16px;
            text-align: center;
            font-size: 13px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #8FA5B8;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom p {
            margin: 0;
        }

        @media (max-width: 1023px) {
            .header-nav {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border);
                display: none;
                z-index: 99;
                max-height: calc(100vh - 68px);
                overflow-y: auto;
            }

            .header-nav.is-open {
                display: flex;
            }

            .header-nav a {
                padding: 12px 16px;
                border-radius: 8px;
                font-size: 16px;
            }

            .header-tools .search-trigger {
                display: none;
            }

            .header-tools .icon-entry {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .brand-text {
                font-size: 15px;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .article-card {
                padding: 36px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 639px) {
            .container {
                padding: 0 16px;
            }

            .site-header {
                height: 60px;
            }

            .header-nav {
                top: 60px;
            }

            .brand-text {
                font-size: 14px;
            }

            .brand-link {
                gap: 8px;
            }

            .brand-mark {
                width: 30px;
                height: 30px;
                border-radius: 8px;
                font-size: 13px;
            }

            .header-tools .btn-sm {
                height: 34px;
                padding: 0 12px;
                font-size: 13px;
                border-radius: 8px;
            }

            .nav-toggle {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .article-main {
                padding: 32px 0 24px;
            }

            .article-card {
                padding: 24px 20px;
                border-radius: 14px;
            }

            .article-heading h1 {
                font-size: 26px;
                line-height: 1.35;
                margin-bottom: 16px;
            }

            .article-meta {
                gap: 10px;
            }

            .meta-tag {
                font-size: 12px;
                padding: 4px 10px;
            }

            .article-body {
                font-size: 15px;
            }

            .article-body h2 {
                font-size: 21px;
            }

            .article-body h3 {
                font-size: 18px;
            }

            .article-body table {
                font-size: 13px;
            }

            .article-body th,
            .article-body td {
                padding: 8px 10px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-thumb {
                height: 130px;
            }

            .section-head {
                margin-bottom: 28px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .back-links {
                margin: 32px 0 48px;
            }

            .back-links .btn {
                width: 100%;
                max-width: 260px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 32px;
            }

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

/* roulang page: category1 */
:root{
  --primary:#1F4E79;
  --primary-action:#2A5FA0;
  --blue-light:#E8EFF7;
  --ink:#17202B;
  --accent:#B08A3E;
  --page-bg:#F6F8FA;
  --card-bg:#FFFFFF;
  --border:#E2E8F0;
  --warn:#C25E4C;
  --disabled:#9AA7B2;
  --radius:12px;
  --shadow-sm:0 1px 2px rgba(16,36,64,.04),0 4px 16px rgba(16,36,64,.05);
  --shadow-md:0 12px 28px rgba(16,36,64,.08);
  --font-stack:-apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-stack);
  background:var(--page-bg);
  color:var(--ink);
  line-height:1.75;
  margin:0;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--primary-action);
  outline-offset:2px;
}
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--card-bg);
  border-bottom:1px solid var(--border);
  height:68px;
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:nowrap;
}
.brand-logo{
  display:flex;
  align-items:center;
  gap:10px;
  white-space:nowrap;
  font-weight:700;
  font-size:18px;
  color:var(--primary);
  min-width:0;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  background:var(--primary);
  color:#fff;
  border-radius:10px;
  font-size:16px;
  flex-shrink:0;
}
.brand-logo>span:last-child{
  overflow:hidden;
  text-overflow:ellipsis;
  letter-spacing:-.01em;
}
.header-nav{
  display:flex;
  align-items:center;
  gap:6px;
}
.header-nav a{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  transition:background .2s ease,color .2s ease;
}
.header-nav a:hover{
  background:var(--blue-light);
  color:var(--primary);
}
.header-nav a.active{
  background:var(--blue-light);
  color:var(--primary);
  font-weight:600;
}
.header-tools{
  display:flex;
  align-items:center;
  gap:8px;
  flex-shrink:0;
}
.command-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:240px;
  height:38px;
  padding:0 12px;
  border:1px solid var(--border);
  border-radius:10px;
  background:var(--page-bg);
  color:var(--disabled);
  cursor:text;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.command-search:hover,
.command-search:focus-within{
  border-color:var(--primary-action);
  background:#fff;
  box-shadow:0 0 0 3px rgba(42,95,160,.12);
}
.command-search i{font-size:13px;flex-shrink:0}
.command-search input{
  border:none;
  background:transparent;
  outline:none;
  flex:1;
  font-size:13px;
  color:var(--ink);
  min-width:0;
}
.command-search input::placeholder{color:var(--disabled)}
.kbd{
  font-size:11px;
  color:var(--disabled);
  border:1px solid var(--border);
  border-radius:4px;
  padding:2px 5px;
  line-height:1;
  flex-shrink:0;
}
.icon-btn{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  color:var(--ink);
  border:1px solid var(--border);
  background:#fff;
  transition:all .2s ease;
}
.icon-btn:hover{
  background:var(--blue-light);
  color:var(--primary);
  border-color:var(--primary-action);
}
.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border:1px solid var(--border);
  border-radius:10px;
  background:#fff;
  font-size:16px;
  cursor:pointer;
  color:var(--ink);
}
.menu-toggle:hover{
  background:var(--blue-light);
  color:var(--primary);
}
/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  padding:0 20px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  transition:all .2s ease;
  cursor:pointer;
  border:none;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 4px 10px rgba(31,78,121,.18);
}
.btn-primary:hover{background:var(--primary-action)}
.btn-primary:active{transform:scale(.97)}
.btn-outline{
  background:#fff;
  border:1px solid #CBD5E0;
  color:var(--ink);
}
.btn-outline:hover{
  border-color:#94A3B8;
  box-shadow:0 4px 10px rgba(16,36,64,.06);
}
.btn-outline:active{transform:scale(.97)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  transition:color .2s ease;
}
.text-link:hover{color:var(--primary-action)}
.text-link i{font-size:13px}
/* category hero */
.category-hero{
  position:relative;
  padding:80px 0 72px;
  background:var(--blue-light);
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.category-hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.18;
}
.category-hero-content{
  position:relative;
  z-index:2;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:#5A6B7B;
  margin-bottom:16px;
}
.breadcrumb a{color:#5A6B7B;transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb-sep{color:#B4C1CE}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--accent);
  font-weight:600;
  text-transform:uppercase;
}
.hero-eyebrow::before{
  content:'';
  width:28px;
  height:1px;
  background:var(--accent);
}
.category-hero h1{
  font-size:34px;
  font-weight:700;
  line-height:1.2;
  color:var(--primary);
  margin:14px 0 14px;
  max-width:760px;
}
.hero-sub{
  font-size:17px;
  line-height:1.65;
  color:#334659;
  max-width:640px;
  margin-bottom:24px;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:999px;
  padding:8px 14px;
  font-size:13px;
  font-weight:500;
  color:var(--primary);
  box-shadow:0 1px 2px rgba(16,36,64,.04);
}
.badge i{color:var(--accent)}
/* intro */
.category-intro{
  padding:80px 0;
}
.intro-grid{
  display:grid;
  grid-template-columns:1fr 1.4fr;
  gap:48px;
  align-items:center;
}
.intro-visual{
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow-md);
}
.intro-visual img{
  width:100%;
  height:300px;
  object-fit:cover;
  background:var(--blue-light);
}
.intro-copy h2{
  font-size:26px;
  font-weight:700;
  color:var(--primary);
  margin-bottom:20px;
  position:relative;
  padding-bottom:14px;
}
.intro-copy h2::after{
  content:'';
  position:absolute;
  left:0;
  bottom:0;
  width:40px;
  height:3px;
  background:var(--accent);
  border-radius:2px;
}
.intro-copy p{
  font-size:15px;
  line-height:1.85;
  margin-bottom:14px;
  color:#2A3441;
}
/* content layout */
.category-content{
  padding:0 0 80px;
}
.content-layout{
  display:grid;
  grid-template-columns:260px 1fr;
  gap:48px;
  align-items:start;
}
.content-toc{
  position:sticky;
  top:90px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow-sm);
}
.content-toc h3{
  font-size:15px;
  color:var(--primary);
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  gap:8px;
}
.content-toc ul{
  list-style:none;
  margin:0;
  padding:0;
}
.content-toc li{margin-bottom:4px}
.content-toc a{
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:8px;
  font-size:14px;
  color:#3D4C5A;
  transition:background .2s ease,color .2s ease;
}
.content-toc a::before{
  content:'';
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--border);
  transition:background .2s ease;
}
.content-toc a:hover{
  background:var(--blue-light);
  color:var(--primary);
}
.content-toc a:hover::before{background:var(--accent)}
.content-main{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  padding:40px 44px;
  box-shadow:var(--shadow-sm);
}
.content-block{
  margin-bottom:40px;
  scroll-margin-top:90px;
}
.content-block:last-child{margin-bottom:0}
.content-block h2{
  font-size:22px;
  font-weight:700;
  color:var(--primary);
  margin-bottom:14px;
  padding-left:14px;
  border-left:4px solid var(--accent);
  line-height:1.4;
}
.content-block p{
  font-size:15px;
  line-height:1.85;
  color:#2A3441;
  margin-bottom:12px;
}
.notice-box{
  display:flex;
  align-items:flex-start;
  gap:10px;
  background:var(--blue-light);
  border:1px solid #D4E2F0;
  border-radius:10px;
  padding:14px 16px;
  font-size:14px;
  color:var(--primary);
  margin-top:24px;
}
.notice-box i{
  margin-top:3px;
  color:var(--accent);
}
/* related */
.related-items{
  padding:0 0 80px;
}
.section-title{
  font-size:28px;
  font-weight:700;
  color:var(--primary);
  text-align:center;
  margin-bottom:10px;
}
.section-sub{
  text-align:center;
  color:#5A6B7B;
  font-size:14px;
  margin-bottom:36px;
}
.related-grid{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:24px;
  align-items:stretch;
}
.related-feature{
  display:flex;
}
.related-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
  display:flex;
  flex-direction:column;
  width:100%;
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.related-card img{
  width:100%;
  height:200px;
  object-fit:cover;
  background:var(--blue-light);
}
.related-feature .related-card img{
  height:300px;
}
.related-card-body{
  padding:20px 22px 24px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.related-card-body h3{
  font-size:18px;
  font-weight:600;
  color:var(--primary);
  margin-bottom:8px;
  line-height:1.4;
}
.related-card-body p{
  font-size:14px;
  color:#5A6B7B;
  line-height:1.65;
  margin-bottom:16px;
  flex:1;
}
.related-card-body .btn,
.related-card-body .text-link{
  align-self:flex-start;
}
.stacked-cards{
  display:flex;
  flex-direction:column;
  gap:24px;
  height:100%;
}
.stacked-cards .related-card img{
  height:120px;
}
.stacked-cards .related-card-body{
  padding:16px 18px 18px;
}
.stacked-cards .related-card-body h3{
  font-size:16px;
}
.stacked-cards .related-card-body p{
  margin-bottom:10px;
  font-size:13px;
}
/* return */
.category-return{
  padding:40px 0 72px;
  background:#fff;
  border-top:1px solid var(--border);
}
.category-return .container{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
  text-align:center;
}
.return-text{
  font-size:14px;
  color:#5A6B7B;
}
.return-divider{
  color:var(--border);
}
/* footer */
.site-footer{
  background:var(--ink);
  color:#C9D4DE;
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.7;
  color:#9FB0BF;
  max-width:320px;
  margin:0;
}
.footer-col h5{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-col li{
  margin-bottom:10px;
}
.footer-col a{
  color:#BCC9D5;
  font-size:14px;
  transition:color .2s ease;
}
.footer-col a:hover{
  color:#fff;
}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:#BCC9D5;
}
.footer-contact i{
  width:16px;
  text-align:center;
  color:var(--accent);
  flex-shrink:0;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:18px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.footer-bottom p{
  font-size:13px;
  color:#8A9BA9;
  margin:0;
}
/* responsive */
@media (max-width:1023px){
  .header-tools{
    display:none;
  }
  .menu-toggle{
    display:inline-flex;
  }
  .header-nav{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:280px;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    padding:80px 24px 24px;
    box-shadow:-8px 0 24px rgba(16,36,64,.08);
    transform:translateX(105%);
    transition:transform .25s ease;
    z-index:200;
  }
  .header-nav.open{
    transform:translateX(0);
  }
  .header-nav a{
    height:46px;
    font-size:16px;
    justify-content:flex-start;
  }
  .content-layout{
    grid-template-columns:1fr;
    gap:24px;
  }
  .content-toc{
    position:static;
  }
  .intro-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
}
@media (max-width:639px){
  .container{
    padding:0 16px;
  }
  .category-hero{
    padding:48px 0 40px;
  }
  .category-hero h1{
    font-size:26px;
    line-height:1.25;
  }
  .hero-sub{
    font-size:15px;
  }
  .brand-logo{
    font-size:16px;
  }
  .brand-logo>span:last-child{
    max-width:160px;
  }
  .brand-mark{
    width:32px;
    height:32px;
    font-size:14px;
    border-radius:8px;
  }
  .related-grid{
    grid-template-columns:1fr;
  }
  .related-feature .related-card img{
    height:200px;
  }
  .stacked-cards{
    gap:16px;
  }
  .stacked-cards .related-card img{
    height:150px;
  }
  .content-main{
    padding:24px 20px;
  }
  .content-block h2{
    font-size:19px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
}

/* roulang page: category2 */
:root {
    --primary: #1F4E79;
    --primary-action: #2A5FA0;
    --blue-light: #E8EFF7;
    --ink: #17202B;
    --accent: #B08A3E;
    --bg: #F6F8FA;
    --card: #FFFFFF;
    --border: #E2E8F0;
    --danger: #C25E4C;
    --muted: #9AA7B2;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 2px rgba(16,36,64,.04), 0 4px 16px rgba(16,36,64,.05);
    --shadow-lg: 0 12px 28px rgba(16,36,64,.08);
    --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  }

  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.75;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
  }

  a { color: inherit; text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease; }
  img { max-width: 100%; display: block; height: auto; background: #E2E8F0; }
  button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
  ul, ol { margin: 0; padding: 0; list-style: none; }
  h1, h2, h3, h4, h5, p { margin: 0; }

  .container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  /* ========== 按钮体系 ========== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 20px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .2s ease;
    white-space: nowrap;
  }
  .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 10px rgba(31,78,121,.18); }
  .btn-primary:hover { background: var(--primary-action); transform: translateY(-1px); }
  .btn-primary:active { transform: scale(.97); }
  .btn-outline { background: #fff; border-color: #CBD5E0; color: var(--ink); }
  .btn-outline:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow-sm); }
  .btn-outline:active { transform: scale(.97); }
  .btn-outline-light { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.5); color: #fff; }
  .btn-outline-light:hover { background: rgba(255,255,255,.2); border-color: #fff; color: #fff; }
  .btn-outline-light:active { transform: scale(.97); }
  .btn-lg { height: 56px; padding: 0 32px; border-radius: 12px; font-size: 16px; box-shadow: 0 6px 16px rgba(31,78,121,.22); }
  .btn-sm { height: 38px; padding: 0 16px; font-size: 14px; border-radius: 8px; }

  /* ========== Header / 导航 ========== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 2px rgba(16,36,64,.03);
  }
  .header-inner { display: flex; align-items: center; gap: 24px; height: 68px; }
  .brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand-mark {
    width: 34px; height: 34px;
    border-radius: 9px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    box-shadow: 0 2px 6px rgba(31,78,121,.2);
  }
  .brand-text { font-size: 17px; font-weight: 700; color: var(--ink); letter-spacing: -.01em; white-space: nowrap; }
  .header-nav { display: flex; align-items: center; gap: 28px; margin-left: 12px; }
  .header-nav a { font-size: 15px; font-weight: 500; color: #3A4758; padding: 6px 2px; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
  .header-nav a:hover { color: var(--primary-action); }
  .header-nav a.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
  .header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
  .command-search {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 230px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--muted);
    font-size: 13px;
    cursor: pointer;
    transition: border-color .2s, box-shadow .2s;
  }
  .command-search:hover { border-color: #C0C9D4; }
  .cmd-badge { margin-left: auto; font-size: 11px; background: #fff; border: 1px solid var(--border); border-radius: 4px; padding: 1px 6px; color: var(--muted); }
  .menu-toggle { display: none; background: none; border: none; font-size: 20px; color: var(--ink); cursor: pointer; padding: 6px; }
  .mobile-menu {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px;
    flex-direction: column;
    gap: 2px;
    box-shadow: 0 8px 24px rgba(16,36,64,.06);
  }
  .mobile-menu.open { display: flex; }
  .mobile-menu a { padding: 12px 10px; border-radius: 8px; font-size: 15px; color: var(--ink); font-weight: 500; }
  .mobile-menu a:hover { background: var(--blue-light); color: var(--primary); }
  .mobile-menu a.active { color: var(--primary); font-weight: 600; background: var(--blue-light); }

  /* ========== Hero ========== */
  .cat-hero {
    position: relative;
    padding: 80px 0 72px;
    background: linear-gradient(100deg, rgba(23,32,43,.94) 0%, rgba(31,78,121,.88) 55%, rgba(42,95,160,.72) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    color: #fff;
    border-bottom: 2px solid var(--accent);
    overflow: hidden;
  }
  .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,.72); margin-bottom: 40px; }
  .breadcrumb a { color: rgba(255,255,255,.72); }
  .breadcrumb a:hover { color: #fff; }
  .breadcrumb i { font-size: 10px; }
  .hero-grid { display: flex; align-items: center; gap: 48px; }
  .hero-copy { flex: 1.2; }
  .hero-eyebrow { display: flex; align-items: center; gap: 10px; font-size: 12px; letter-spacing: .18em; color: #D6C7A1; font-weight: 600; margin-bottom: 16px; }
  .gold-line { width: 28px; height: 2px; background: var(--accent); display: inline-block; }
  .cat-hero h1 { font-size: 38px; line-height: 1.15; font-weight: 700; color: #fff; letter-spacing: -.01em; max-width: 660px; }
  .hero-subtitle { font-size: 16px; line-height: 1.7; color: rgba(255,255,255,.86); max-width: 540px; margin-top: 16px; }
  .hero-cta { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
  .hero-trust { display: flex; gap: 22px; margin-top: 36px; font-size: 14px; color: rgba(255,255,255,.82); }
  .trust-item { display: inline-flex; align-items: center; gap: 8px; }
  .trust-item i { color: #D6C7A1; font-size: 14px; }
  .hero-panel {
    flex: 0 0 300px;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 16px 40px rgba(16,36,64,.25);
  }
  .hero-panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
  .hero-panel-title { font-weight: 700; font-size: 15px; color: #fff; }
  .hero-panel-badge { font-size: 11px; padding: 2px 10px; border-radius: 20px; background: var(--accent); color: #fff; font-weight: 600; }
  .hero-panel-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,.9); padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
  .hero-panel-list li:last-child { border-bottom: none; }
  .hero-panel-list i { color: #D6C7A1; width: 16px; text-align: center; }
  .hero-panel-note { margin-top: 12px; font-size: 12px; color: rgba(255,255,255,.66); display: flex; gap: 6px; align-items: flex-start; line-height: 1.5; }

  /* ========== 分类介绍区 ========== */
  .cat-intro { padding: 96px 0; background: var(--bg); }
  .intro-media { position: relative; }
  .intro-img { border-radius: 16px; box-shadow: var(--shadow-lg); width: 100%; object-fit: cover; aspect-ratio: 4/3; }
  .intro-float {
    position: absolute;
    left: 20px;
    bottom: 20px;
    background: #fff;
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
  }
  .intro-text { padding-left: 24px; }
  .section-kicker { font-size: 12px; letter-spacing: .18em; color: var(--accent); font-weight: 700; display: block; margin-bottom: 10px; }
  .section-title { font-size: 30px; line-height: 1.3; font-weight: 700; color: var(--ink); letter-spacing: -.01em; margin-bottom: 20px; }
  .intro-text p { color: #3A4758; font-size: 15px; margin-bottom: 14px; }
  .intro-check { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
  .intro-check li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--ink); font-weight: 500; }
  .intro-check i { color: var(--primary-action); font-size: 16px; }

  /* ========== 内容正文区（锚点目录） ========== */
  .cat-guide { padding: 96px 0; background: #fff; }
  .section-head { max-width: 720px; margin-bottom: 48px; }
  .section-desc { font-size: 15px; color: #5A6675; margin-top: 8px; }
  .guide-toc { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; position: sticky; top: 92px; }
  .toc-title { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 12px; letter-spacing: .04em; }
  .guide-toc a { display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 2px; }
  .guide-toc a:hover { background: var(--blue-light); color: var(--primary); }
  .guide-toc a span { font-size: 12px; color: var(--accent); font-weight: 700; }
  .guide-content { max-width: 760px; }
  .guide-section { margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px dashed var(--border); }
  .guide-section:last-child { border-bottom: none; margin-bottom: 0; }
  .guide-section h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 12px; }
  .guide-section p { font-size: 15px; line-height: 1.8; color: #3A4758; }

  /* ========== 会员成长路径 ========== */
  .member-timeline { padding: 96px 0; background: var(--blue-light); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
  .timeline-row { display: flex; gap: 32px; position: relative; margin-top: 20px; }
  .timeline-item { flex: 1; position: relative; }
  .timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 44px;
    left: calc(100% + 8px);
    width: 32px;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--accent) 0 6px, transparent 6px 12px);
  }
  .tl-num {
    font-size: 60px;
    font-weight: 800;
    line-height: 1;
    color: rgba(176,138,62,.22);
    display: block;
    margin-bottom: 14px;
    font-family: Georgia, 'Times New Roman', serif;
  }
  .timeline-item h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
  .timeline-item p { font-size: 14px; color: #4A5668; line-height: 1.7; }

  /* ========== 静态内容卡 ========== */
  .static-cards { padding: 96px 0; background: var(--bg); }
  .spotlight-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 880px; margin: 0 auto; }
  .spotlight-card { background: #fff; border: 1px solid var(--border); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease; }
  .spotlight-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
  .spotlight-media { position: relative; overflow: hidden; }
  .spotlight-media img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
  .tag { position: absolute; left: 16px; top: 16px; background: rgba(31,78,121,.92); color: #fff; font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 20px; }
  .tag-gold { background: var(--accent); }
  .spotlight-body { padding: 24px; }
  .spotlight-body h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin-bottom: 10px; }
  .spotlight-body p { font-size: 14px; color: #5A6675; line-height: 1.7; margin-bottom: 16px; }
  .text-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; transition: gap .2s, color .2s; }
  .text-link:hover { color: var(--primary-action); gap: 10px; }
  .spotlight-card-dark { background: var(--primary); border-color: var(--primary); }
  .spotlight-card-dark .spotlight-body h3 { color: #fff; }
  .spotlight-card-dark .spotlight-body p { color: rgba(255,255,255,.76); }
  .spotlight-card-dark .text-link { color: #D6C7A1; }
  .spotlight-card-dark .text-link:hover { color: #fff; }

  /* ========== FAQ ========== */
  .faq-section { padding: 96px 0; background: #fff; }
  .faq-list { max-width: 800px; margin: 0 auto; }
  .faq-item { border-bottom: 1px solid var(--border); }
  .faq-item:first-child { border-top: 1px solid var(--border); }
  .faq-q { display: flex; align-items: center; gap: 12px; padding: 22px 4px; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--ink); transition: color .2s; }
  .faq-q:hover { color: var(--primary); }
  .faq-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
  .faq-icon {
    margin-left: auto;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--blue-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 13px;
    transition: transform .2s, background .2s, color .2s;
  }
  .faq-a { display: none; padding: 0 4px 22px 32px; font-size: 14px; line-height: 1.75; color: #4A5668; }
  .faq-a p { margin-bottom: 8px; }
  .faq-item.active .faq-q { color: var(--primary); }
  .faq-item.active .faq-icon { background: var(--primary); color: #fff; transform: rotate(90deg); }

  /* ========== 文末返回入口 ========== */
  .cat-footnote { padding: 56px 0 96px; background: #fff; }
  .footnote-box { max-width: 760px; margin: 0 auto; text-align: center; background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 40px 32px; }
  .footnote-box p { font-size: 15px; color: #4A5668; margin-bottom: 24px; }
  .footnote-actions { display: flex; justify-content: center; gap: 16px; align-items: center; flex-wrap: wrap; }

  /* ========== Footer ========== */
  .site-footer { background: #17202B; color: #C9D4DE; padding: 64px 0 28px; }
  .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 44px; }
  .footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 16px; margin-bottom: 14px; }
  .footer-brand p { font-size: 13px; line-height: 1.7; opacity: .78; max-width: 280px; }
  .footer-col h5 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; }
  .footer-col ul li { margin-bottom: 10px; }
  .footer-col ul a { font-size: 13px; color: #C9D4DE; transition: color .2s; }
  .footer-col ul a:hover { color: #fff; }
  .footer-contact li { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: #C9D4DE; line-height: 1.6; }
  .footer-contact i { margin-top: 4px; color: #D6C7A1; font-size: 13px; }
  .footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; color: rgba(255,255,255,.55); flex-wrap: wrap; gap: 8px; }

  /* ========== 响应式 ========== */
  @media (max-width: 1023px) {
    .header-nav { display: none; }
    .command-search { display: none; }
    .menu-toggle { display: block; }
    .header-inner { gap: 12px; }
    .cat-hero { padding: 64px 0 56px; }
    .hero-grid { flex-direction: column; gap: 32px; }
    .hero-panel { width: 100%; flex: none; max-width: 360px; }
    .intro-text { padding-left: 0; margin-top: 32px; }
    .timeline-row { flex-wrap: wrap; gap: 24px; }
    .timeline-item { flex: 1 1 calc(50% - 24px); }
    .timeline-item:not(:last-child)::after { display: none; }
    .spotlight-grid { grid-template-columns: 1fr; max-width: 560px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  }

  @media (max-width: 639px) {
    .container { padding-left: 16px; padding-right: 16px; }
    body { font-size: 15px; }
    .brand-text { font-size: 15px; }
    .header-cta span { display: none; }
    .header-cta { width: 36px; padding: 0; }
    .cat-hero h1 { font-size: 28px; }
    .hero-subtitle { font-size: 15px; }
    .hero-cta { flex-direction: column; align-items: stretch; }
    .hero-cta .btn { width: 100%; }
    .hero-trust { flex-wrap: wrap; gap: 12px; }
    .section-title { font-size: 24px; }
    .cat-intro, .cat-guide, .member-timeline, .static-cards, .faq-section { padding: 60px 0; }
    .timeline-item { flex: 1 1 100%; }
    .spotlight-media img { aspect-ratio: 4/3; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .footnote-actions { flex-direction: column; }
    .footnote-actions .btn, .footnote-actions .text-link { width: 100%; justify-content: center; }
  }

  @media (max-width: 420px) {
    .brand-text { font-size: 14px; }
    .brand-mark { width: 30px; height: 30px; font-size: 13px; }
  }