/* roulang page: index */
:root {
        --primary: #1a2b4a;
        --primary-light: #2d4373;
        --accent: #e8a33d;
        --accent-hover: #d19235;
        --bg: #f5f7fa;
        --bg-alt: #eef1f6;
        --white: #ffffff;
        --text: #1e293b;
        --text-weak: #64748b;
        --border: #e2e8f0;
        --radius: 12px;
        --radius-lg: 20px;
        --shadow: 0 4px 24px rgba(26,43,74,.08);
        --shadow-hover: 0 12px 40px rgba(26,43,74,.14);
        --transition: .3s ease;
        --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
        font-family: var(--font);
        line-height: 1.6;
        color: var(--text);
        background: var(--bg);
        -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input { font-family: inherit; }

    .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

    /* ===== Header ===== */
    .site-header {
        position: sticky; top: 0; z-index: 1000;
        background: rgba(255,255,255,.92);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
    }
    .main-nav { display: flex; align-items: center; gap: 24px; padding: 14px 0; }
    .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
    .brand-icon {
        width: 40px; height: 40px; border-radius: 10px;
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        color: var(--accent); display: flex; align-items: center; justify-content: center;
        font-size: 18px;
    }
    .brand-text { font-size: 18px; font-weight: 700; color: var(--primary); white-space: nowrap; }
    .nav-links { display: flex; gap: 6px; margin-left: 12px; }
    .nav-link {
        padding: 8px 16px; border-radius: 8px; font-weight: 500;
        color: var(--text-weak); transition: var(--transition);
        font-size: 14px;
    }
    .nav-link:hover { color: var(--primary); background: var(--bg-alt); }
    .nav-link.active { color: var(--primary); background: rgba(26,43,74,.08); font-weight: 600; }
    .nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
    .search-box { position: relative; }
    .search-box input {
        width: 200px; padding: 8px 36px 8px 14px;
        border: 1px solid var(--border); border-radius: 8px;
        background: var(--bg); transition: var(--transition);
        font-size: 14px;
    }
    .search-box input:focus {
        outline: none; border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(232,163,61,.15);
        background: var(--white);
    }
    .search-box button {
        position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
        background: none; border: none; color: var(--text-weak); cursor: pointer;
    }
    .btn {
        display: inline-flex; align-items: center; gap: 6px;
        padding: 9px 18px; border-radius: 8px; font-weight: 500;
        border: none; cursor: pointer; transition: var(--transition);
        font-size: 14px;
    }
    .btn-ghost { background: var(--bg-alt); color: var(--primary); }
    .btn-ghost:hover { background: var(--border); transform: translateY(-1px); }
    .btn-primary {
        background: linear-gradient(135deg, var(--accent), #f0b55a);
        color: var(--primary); font-weight: 600;
        box-shadow: 0 4px 16px rgba(232,163,61,.3);
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,163,61,.4); }
    .btn-light { background: var(--white); color: var(--primary); }
    .btn-light:hover { background: var(--bg-alt); transform: translateY(-2px); }
    .btn-outline-light { background: transparent; border: 2px solid rgba(255,255,255,.6); color: var(--white); }
    .btn-outline-light:hover { background: rgba(255,255,255,.15); border-color: var(--white); }

    .mobile-toggle { display: none; background: none; border: none; width: 40px; height: 40px; position: relative; cursor: pointer; }
    .mobile-toggle span, .mobile-toggle span::before, .mobile-toggle span::after {
        content: ''; position: absolute; width: 20px; height: 2px; background: var(--primary);
        left: 10px; transition: var(--transition);
    }
    .mobile-toggle span { top: 20px; }
    .mobile-toggle span::before { top: -6px; }
    .mobile-toggle span::after { top: 6px; }
    .mobile-toggle.active span { background: transparent; }
    .mobile-toggle.active span::before { transform: rotate(45deg); top: 0; }
    .mobile-toggle.active span::after { transform: rotate(-45deg); top: 0; }
    .mobile-menu { display: none; width: 100%; padding: 12px 0; border-top: 1px solid var(--border); }
    .mobile-menu.show { display: block; }
    .mobile-menu a { display: block; padding: 12px 16px; border-radius: 8px; font-size: 15px; color: var(--text); }
    .mobile-menu a:hover { background: var(--bg-alt); }
    .mobile-menu a.active { color: var(--primary); font-weight: 600; background: rgba(26,43,74,.06); }
    .mobile-actions { display: flex; gap: 10px; padding: 12px 16px; }

    /* ===== Hero ===== */
    .hero {
        position: relative; padding: 100px 0; color: var(--white);
        background: linear-gradient(135deg, rgba(26,43,74,.92), rgba(45,67,115,.78)), url('/assets/images/backpic/back-1.png') center/cover;
        overflow: hidden;
    }
    .hero-badge {
        display: inline-flex; align-items: center; gap: 6px;
        padding: 6px 16px; background: rgba(255,255,255,.15);
        border: 1px solid rgba(255,255,255,.25); border-radius: 100px;
        font-size: 13px; backdrop-filter: blur(4px);
    }
    .hero h1 { font-size: 48px; font-weight: 800; margin: 20px 0 16px; line-height: 1.2; letter-spacing: .5px; }
    .hero .lead { font-size: 18px; opacity: .92; max-width: 640px; line-height: 1.8; }
    .hero-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
    .hero-stats { display: flex; gap: 40px; margin-top: 56px; flex-wrap: wrap; }
    .hero-stat { display: flex; flex-direction: column; }
    .hero-stat b { font-size: 32px; color: var(--accent); font-weight: 700; }
    .hero-stat span { font-size: 14px; opacity: .8; }

    /* ===== Section ===== */
    .section { padding: 72px 0; }
    .section-alt { background: var(--white); }
    .section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
    .section-tag {
        display: inline-block; padding: 5px 14px;
        background: rgba(232,163,61,.12); color: #b87a1d;
        border-radius: 100px; font-size: 13px; font-weight: 600;
        margin-bottom: 14px;
    }
    .section-title { font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 12px; line-height: 1.3; }
    .section-sub { color: var(--text-weak); font-size: 16px; }

    /* ===== Feature Card ===== */
    .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .feature-card {
        background: var(--white); border: 1px solid var(--border);
        border-radius: var(--radius-lg); padding: 32px;
        transition: var(--transition);
    }
    .feature-card:hover {
        box-shadow: var(--shadow-hover); transform: translateY(-4px);
        border-color: transparent;
    }
    .feature-icon {
        width: 52px; height: 52px; border-radius: 14px;
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        display: flex; align-items: center; justify-content: center;
        font-size: 20px; color: var(--accent); margin-bottom: 20px;
    }
    .feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--primary); }
    .feature-card p { color: var(--text-weak); font-size: 14px; line-height: 1.7; }

    /* ===== Cover Card ===== */
    .cover-card {
        background: var(--white); border-radius: var(--radius-lg); overflow: hidden;
        border: 1px solid var(--border); transition: var(--transition);
        height: 100%;
    }
    .cover-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
    .cover-thumb { position: relative; aspect-ratio: 16/10; overflow: hidden; }
    .cover-thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
    .cover-card:hover .cover-thumb img { transform: scale(1.05); }
    .cover-body { padding: 24px; }
    .cover-body h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--primary); }
    .cover-body p { color: var(--text-weak); font-size: 14px; line-height: 1.7; }
    .cover-link {
        margin-top: 16px; color: var(--accent); font-weight: 600;
        font-size: 14px; display: inline-flex; align-items: center; gap: 6px;
    }
    .cover-link i { transition: var(--transition); }
    .cover-link:hover i { transform: translateX(4px); }

    /* ===== Badge ===== */
    .badge { display: inline-block; padding: 4px 10px; border-radius: 6px; font-size: 12px; font-weight: 600; }
    .badge-primary { background: rgba(26,43,74,.08); color: var(--primary); }
    .badge-accent { background: rgba(232,163,61,.15); color: #b87a1d; }

    /* ===== Content List ===== */
    .content-list { display: flex; flex-direction: column; gap: 14px; }
    .content-item {
        display: flex; align-items: center; gap: 16px;
        background: var(--white); padding: 18px 22px;
        border-radius: var(--radius); border: 1px solid var(--border);
        transition: var(--transition);
    }
    .content-item:hover {
        box-shadow: var(--shadow); border-color: transparent;
        transform: translateX(4px);
    }
    .content-item .badge { flex-shrink: 0; }
    .content-item-main { flex: 1; min-width: 0; }
    .content-item-main h3 { font-size: 15px; font-weight: 500; margin-bottom: 4px; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .content-item-main p { color: var(--text-weak); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .content-item time { color: var(--text-weak); font-size: 13px; flex-shrink: 0; }
    .empty-tip { text-align: center; padding: 40px 0; color: var(--text-weak); font-size: 15px; background: var(--white); border-radius: var(--radius); border: 1px dashed var(--border); }

    /* ===== Steps ===== */
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .step-item { text-align: center; position: relative; padding: 24px 16px; }
    .step-num {
        width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%;
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        color: var(--accent); font-size: 22px; font-weight: 700;
        display: flex; align-items: center; justify-content: center;
        box-shadow: 0 8px 24px rgba(26,43,74,.2);
    }
    .step-item h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: var(--primary); }
    .step-item p { color: var(--text-weak); font-size: 14px; line-height: 1.7; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; }
    .faq-item {
        background: var(--white); border: 1px solid var(--border);
        border-radius: var(--radius); margin-bottom: 14px; overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:focus-within { border-color: var(--accent); }
    .faq-header {
        width: 100%; padding: 20px 24px; background: none; border: none;
        display: flex; justify-content: space-between; align-items: center;
        font-size: 16px; font-weight: 500; cursor: pointer; color: var(--text); text-align: left;
        transition: var(--transition);
    }
    .faq-header:hover { background: var(--bg-alt); }
    .faq-header i { transition: var(--transition); color: var(--accent); }
    .faq-item.open .faq-header i { transform: rotate(180deg); }
    .faq-body { padding: 0 24px 20px; color: var(--text-weak); font-size: 14px; line-height: 1.8; display: none; }
    .faq-item.open .faq-body { display: block; }

    /* ===== CTA ===== */
    .cta-section {
        padding: 80px 0;
        background: linear-gradient(135deg, rgba(26,43,74,.94), rgba(45,67,115,.85)), url('/assets/images/backpic/back-2.png') center/cover;
        color: var(--white); text-align: center;
    }
    .cta-section .section-title { color: var(--white); }
    .cta-section .section-sub { color: rgba(255,255,255,.8); }
    .cta-actions { display: flex; justify-content: center; gap: 16px; margin-top: 32px; flex-wrap: wrap; }

    /* ===== Footer ===== */
    .site-footer { background: #0f1a2e; color: rgba(255,255,255,.7); padding: 56px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.1); }
    .footer-brand .brand-text { color: var(--white); }
    .footer-brand .brand-icon { background: rgba(255,255,255,.12); }
    .footer-brand p { font-size: 14px; color: rgba(255,255,255,.6); margin-top: 14px; max-width: 360px; line-height: 1.7; }
    .footer-links h4 { color: var(--white); font-size: 16px; margin-bottom: 14px; }
    .footer-links a { display: block; padding: 4px 0; font-size: 14px; color: rgba(255,255,255,.6); transition: var(--transition); }
    .footer-links a:hover { color: var(--accent); padding-left: 4px; }
    .footer-bottom { padding-top: 20px; font-size: 13px; color: rgba(255,255,255,.4); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

    /* ===== Responsive ===== */
    @media (max-width: 992px) {
        .nav-links, .nav-actions { display: none; }
        .mobile-toggle { display: block; }
        .main-nav { flex-wrap: wrap; }
        .card-grid { grid-template-columns: repeat(2, 1fr); }
        .steps { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
        .hero { padding: 60px 0; }
        .hero h1 { font-size: 32px; }
        .section-title { font-size: 26px; }
        .section { padding: 48px 0; }
        .footer-grid { grid-template-columns: 1fr; }
        .hero-stats { gap: 20px; }
    }
    @media (max-width: 520px) {
        .card-grid { grid-template-columns: 1fr; }
        .steps { grid-template-columns: 1fr; }
        .hero-stat b { font-size: 24px; }
        .brand-text { font-size: 15px; }
        .content-item { flex-wrap: wrap; }
        .content-item time { width: 100%; padding-left: 68px; }
    }

/* roulang page: category1 */
:root {
            --primary: #0f2b46;
            --primary-light: #1a4270;
            --primary-lighter: #2d5a8e;
            --accent: #e8a33d;
            --accent-dark: #d18f2a;
            --accent-soft: #fff4e5;
            --bg-body: #f4f6fa;
            --bg-soft: #eef1f6;
            --bg-dark: #0a1a2a;
            --white: #ffffff;
            --text-main: #1c2b3a;
            --text-weak: #64748b;
            --border-color: #e2e8f0;
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 9px;
            --shadow-sm: 0 2px 14px rgba(15, 43, 70, .05);
            --shadow-md: 0 8px 28px rgba(15, 43, 70, .08);
            --shadow-lg: 0 18px 50px rgba(15, 43, 70, .12);
            --transition: .3s cubic-bezier(.22, .61, .36, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .3s ease;
        }

        a:hover {
            color: var(--accent);
        }

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

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

        input,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(15, 43, 70, .04);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 700;
            font-size: 18px;
            color: var(--primary);
            letter-spacing: .3px;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: 0 4px 12px rgba(15, 43, 70, .22);
        }

        .brand-text {
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: 24px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            padding: 8px 4px;
            position: relative;
            white-space: nowrap;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-soft);
            border-radius: 40px;
            padding: 6px 6px 6px 16px;
            width: 210px;
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .search-box:focus-within {
            background: #fff;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232, 163, 61, .15);
        }

        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            width: 100%;
            font-size: 14px;
            color: var(--text-main);
        }

        .search-box input::placeholder {
            color: var(--text-weak);
        }

        .search-box button {
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
            transition: background var(--transition);
        }

        .search-box button:hover {
            background: var(--accent);
        }

        .btn {
            font-weight: 600;
            border-radius: 8px;
            padding: 9px 20px;
            font-size: 14px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(15, 43, 70, .2);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(15, 43, 70, .28);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(15, 43, 70, .2);
        }

        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border-color: #d7dde6;
        }

        .btn-ghost:hover {
            background: var(--bg-soft);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            box-shadow: 0 6px 20px rgba(232, 163, 61, .3);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(232, 163, 61, .38);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .14);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
            border-radius: 12px;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: #fff;
        }

        .mobile-toggle span {
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all .3s ease;
        }

        .mobile-toggle.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }

        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 18px 24px 24px;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 12px 32px rgba(15, 43, 70, .08);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            border-bottom: 1px solid var(--bg-soft);
        }

        .mobile-menu a:hover {
            color: var(--accent);
        }

        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 700;
            border-left: 3px solid var(--accent);
            padding-left: 12px;
        }

        .mobile-actions {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        .mobile-actions .btn {
            flex: 1;
            justify-content: center;
            padding: 11px;
        }

        .page-hero {
            background: linear-gradient(135deg, rgba(10, 26, 42, .92) 0%, rgba(15, 43, 70, .85) 45%, rgba(26, 66, 112, .78) 100%),
                url('/assets/images/backpic/back-1.png') no-repeat center center;
            background-size: cover;
            padding: 140px 0 80px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -40px;
            right: -60px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: rgba(232, 163, 61, .12);
            filter: blur(60px);
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            padding: 7px 18px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: .5px;
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
        }

        .hero-badge i {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }

        .page-hero h1 span {
            color: var(--accent);
        }

        .page-hero .lead {
            font-size: 17px;
            color: rgba(255, 255, 255, .82);
            line-height: 1.8;
            margin-bottom: 30px;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 42px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, .18);
        }

        .hero-stats .stat-item {
            text-align: center;
        }

        .hero-stats .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stats .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, .68);
            margin-top: 4px;
        }

        .breadcrumb-nav {
            background: transparent;
            padding: 14px 0;
            margin-bottom: 0;
            border-bottom: 1px solid var(--border-color);
        }

        .breadcrumb-nav .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
        }

        .breadcrumb-nav a {
            color: var(--text-weak);
        }

        .breadcrumb-nav a:hover {
            color: var(--accent);
        }

        .breadcrumb-nav i {
            font-size: 12px;
            color: #c0cbd8;
        }

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

        .section {
            padding: 90px 0;
        }

        .section-bg-soft {
            background: var(--white);
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }

        .section-header .eyebrow {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            padding: 7px 18px;
            border-radius: 40px;
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.75;
        }

        .section-header.light h2 {
            color: #fff;
        }

        .section-header.light p {
            color: rgba(255, 255, 255, .75);
        }

        /* 平台概览 */
        .overview-wrap {
            display: flex;
            align-items: center;
            gap: 60px;
        }

        .overview-media {
            flex: 1;
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .overview-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .overview-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(15, 43, 70, .6));
        }

        .overview-media .media-caption {
            position: absolute;
            bottom: 20px;
            left: 20px;
            color: #fff;
            z-index: 2;
            font-size: 14px;
            background: rgba(15, 43, 70, .6);
            padding: 8px 16px;
            border-radius: 30px;
            backdrop-filter: blur(6px);
        }

        .overview-content {
            flex: 1;
        }

        .overview-content .eyebrow {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
        }

        .overview-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 18px;
            line-height: 1.35;
        }

        .overview-content p {
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 22px;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 30px;
        }

        .feature-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-main);
        }

        .feature-list li i {
            width: 22px;
            height: 22px;
            background: var(--accent-soft);
            color: var(--accent-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
        }

        .overview-content .btn {
            margin-top: 6px;
        }

        /* 核心功能卡片 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent) 0%, var(--accent-dark) 100%);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .45s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 163, 61, .35);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 22px;
            box-shadow: 0 8px 20px rgba(15, 43, 70, .22);
            transition: all var(--transition);
        }

        .feature-card:hover .icon-wrap {
            transform: scale(1.05) rotate(-4deg);
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .feature-card .feature-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .feature-card .feature-link:hover {
            color: var(--accent-dark);
        }

        /* 使用流程 */
        .steps-section {
            background: var(--primary);
            background-image: linear-gradient(135deg, #0a1a2a 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }

        .steps-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(232, 163, 61, .08);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 2;
        }

        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, .06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, .1);
            backdrop-filter: blur(10px);
            transition: all var(--transition);
        }

        .step-item:hover {
            background: rgba(255, 255, 255, .12);
            transform: translateY(-4px);
            border-color: rgba(232, 163, 61, .3);
        }

        .step-num {
            font-size: 42px;
            font-weight: 800;
            color: rgba(255, 255, 255, .15);
            line-height: 1;
            margin-bottom: 18px;
            font-family: Georgia, serif;
        }

        .step-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: rgba(255, 255, 255, .1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--accent);
            border: 1px solid rgba(255, 255, 255, .14);
            transition: all var(--transition);
        }

        .step-item:hover .step-icon {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            line-height: 1.7;
        }

        /* 数据统计 */
        .stats-section {
            background: var(--white);
        }

        .stats-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            padding: 20px 0;
        }

        .stat-card {
            text-align: center;
            padding: 34px 20px;
            background: var(--bg-body);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 163, 61, .3);
        }

        .stat-card .stat-value {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .stat-card .stat-value small {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
        }

        .stat-card .stat-label {
            font-size: 15px;
            color: var(--text-weak);
            font-weight: 500;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-body);
        }

        .faq-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            align-items: start;
        }

        .faq-card {
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-card:hover {
            border-color: rgba(232, 163, 61, .35);
            box-shadow: var(--shadow-md);
        }

        .faq-card .faq-q {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: transparent;
            transition: background var(--transition);
        }

        .faq-card .faq-q:hover {
            background: var(--accent-soft);
        }

        .faq-card .faq-q i {
            font-size: 14px;
            color: var(--accent);
            transition: transform .3s ease;
            flex-shrink: 0;
        }

        .faq-card .faq-q[aria-expanded="true"] i {
            transform: rotate(180deg);
        }

        .faq-card .faq-a {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.75;
        }

        /* CTA */
        .cta-section {
            background: var(--primary);
            background-image: linear-gradient(120deg, var(--primary) 0%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            padding: 90px 0;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(232, 163, 61, .14);
            filter: blur(60px);
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            filter: blur(40px);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, .76);
            margin-bottom: 34px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* 内容推荐 */
        .content-section {
            background: var(--white);
        }

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

        .content-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 163, 61, .3);
        }

        .content-card .card-image {
            position: relative;
            height: 210px;
            overflow: hidden;
        }

        .content-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .content-card:hover .card-image img {
            transform: scale(1.06);
        }

        .content-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 43, 70, .85);
            color: #fff;
            font-size: 12px;
            padding: 5px 14px;
            border-radius: 30px;
            backdrop-filter: blur(6px);
            font-weight: 500;
            z-index: 2;
        }

        .content-card .card-body {
            padding: 24px 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .content-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .content-card .card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .content-card .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 14px;
            border-top: 1px solid var(--bg-soft);
            font-size: 13px;
            color: var(--text-weak);
        }

        .content-card .card-meta a {
            color: var(--accent);
            font-weight: 600;
        }

        .content-card .card-meta a:hover {
            color: var(--accent-dark);
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .72);
            padding: 80px 0 0;
        }

        .footer-grid {
            display: flex;
            justify-content: space-between;
            gap: 60px;
            padding-bottom: 46px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand {
            max-width: 420px;
        }

        .footer-brand .brand {
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-brand .brand-icon {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
            box-shadow: 0 4px 12px rgba(232, 163, 61, .3);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, .6);
        }

        .footer-links h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-links a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            padding: 7px 0;
            transition: color .3s ease, padding-left .3s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
            flex-wrap: wrap;
            gap: 10px;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

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

            .overview-wrap {
                flex-direction: column;
                gap: 36px;
            }

            .faq-wrap {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links,
            .nav-actions {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .page-hero {
                padding: 120px 0 56px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero .lead {
                font-size: 15px;
            }

            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }

            .section {
                padding: 60px 0;
            }

            .section-header h2 {
                font-size: 27px;
            }

            .overview-media img {
                height: 280px;
            }

            .cta-content h2 {
                font-size: 28px;
            }

            .footer-grid {
                flex-direction: column;
                gap: 32px;
            }

            .footer-bottom {
                text-align: center;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }

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

            .stats-wrap {
                grid-template-columns: 1fr 1fr;
            }

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

            .page-hero h1 {
                font-size: 25px;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .overview-content h2 {
                font-size: 24px;
            }

            .cta-section {
                padding: 60px 0;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
        }

/* roulang page: article */
:root {
            --primary: #e85d2f;
            --primary-dark: #c7451e;
            --accent: #f4b942;
            --accent-soft: #fdf1d7;
            --dark: #19222f;
            --dark-2: #202b3a;
            --body-bg: #f7f4f0;
            --surface: #ffffff;
            --text: #26303e;
            --text-weak: #69727e;
            --border: #e8e2da;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow: 0 12px 30px rgba(25, 34, 47, .08);
            --shadow-lg: 0 20px 44px rgba(25, 34, 47, .12);
            --space: 24px;
            --header-h: 72px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--body-bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ======= 按钮 ======= */
        .btn {
            border-radius: 999px;
            font-weight: 600;
            padding: 10px 24px;
            border: 2px solid transparent;
            transition: all .25s ease;
            font-size: .95rem;
        }

        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(232, 93, 47, .28);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(232, 93, 47, .35);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-primary:focus-visible,
        .btn-ghost:focus-visible {
            outline: 3px solid rgba(232, 93, 47, .4);
            outline-offset: 2px;
        }

        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
        }

        .btn-dark {
            background: var(--dark);
            border-color: var(--dark);
            color: #fff;
        }

        .btn-dark:hover {
            background: var(--dark-2);
            border-color: var(--dark-2);
            color: var(--accent);
            transform: translateY(-2px);
        }

        /* ======= 页头导航 ======= */
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(25, 34, 47, .04);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--header-h);
            gap: 16px;
            flex-wrap: nowrap;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            box-shadow: 0 6px 16px rgba(232, 93, 47, .3);
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 1.1rem;
            font-weight: 700;
            letter-spacing: .02em;
            color: var(--text);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .nav-link {
            padding: 10px 18px;
            border-radius: 999px;
            font-weight: 600;
            font-size: .95rem;
            color: var(--text-weak);
            transition: all .25s ease;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(232, 93, 47, .08);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(232, 93, 47, .1);
        }

        .nav-link:focus-visible {
            outline: 3px solid rgba(232, 93, 47, .4);
            outline-offset: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--body-bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 6px 4px 16px;
            width: 220px;
            transition: all .25s ease;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(232, 93, 47, .12);
            background: #fff;
        }

        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            width: 100%;
            font-size: .9rem;
            color: var(--text);
        }

        .search-box input::placeholder {
            color: #a8a29a;
        }

        .search-box button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all .25s ease;
        }

        .search-box button:hover {
            background: var(--primary-dark);
        }

        .nav-actions .btn {
            padding: 8px 20px;
            font-size: .9rem;
        }

        .nav-actions .btn-ghost {
            border-color: var(--border);
            color: var(--text);
        }

        .nav-actions .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(232, 93, 47, .06);
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: transparent;
            position: relative;
            cursor: pointer;
            flex-shrink: 0;
        }

        .mobile-toggle span,
        .mobile-toggle span::before,
        .mobile-toggle span::after {
            content: "";
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text);
            border-radius: 4px;
            margin: 0 auto;
            transition: all .3s ease;
        }

        .mobile-toggle span {
            transform: translateY(-3px);
        }

        .mobile-toggle span::before {
            transform: translateY(4px);
        }

        .mobile-toggle span::after {
            transform: translateY(10px);
        }

        .mobile-toggle.open span {
            background: transparent;
        }

        .mobile-toggle.open span::before {
            transform: translateY(1px) rotate(45deg);
        }

        .mobile-toggle.open span::after {
            transform: translateY(-1px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 16px 20px 20px;
            border-radius: 0 0 20px 20px;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 12px;
            font-weight: 600;
            color: var(--text);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(232, 93, 47, .08);
            color: var(--primary);
        }

        .mobile-actions {
            display: flex;
            gap: 10px;
            margin-top: 14px;
        }

        .mobile-actions .btn {
            flex: 1;
        }

        /* ======= 文章头图 ======= */
        .article-hero {
            background: linear-gradient(120deg, rgba(25, 34, 47, .88), rgba(25, 34, 47, .7)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 72px 0 60px;
            color: #fff;
            position: relative;
        }

        .article-hero .brand-hero {
            font-size: .85rem;
            letter-spacing: .08em;
            color: rgba(255, 255, 255, .65);
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 18px;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, .85);
            padding: 6px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .08);
            transition: all .25s ease;
        }

        .breadcrumb-nav a:hover {
            background: rgba(255, 255, 255, .2);
            color: #fff;
        }

        .breadcrumb-nav i {
            font-size: .7rem;
            color: rgba(255, 255, 255, .4);
        }

        .breadcrumb-nav span {
            color: var(--accent);
            padding: 6px 12px;
            border-radius: 999px;
            background: rgba(244, 185, 66, .12);
            max-width: 280px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-hero h1 {
            font-size: clamp(1.7rem, 3vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 18px;
            max-width: 760px;
            letter-spacing: .01em;
        }

        .article-hero .hero-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .75);
        }

        .hero-meta .badge {
            background: var(--accent);
            color: var(--dark);
            padding: 6px 14px;
            border-radius: 999px;
            font-weight: 600;
        }

        .hero-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ======= 文章主体 ======= */
        .article-section {
            padding: 60px 0 20px;
        }

        .article-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 40px;
        }

        .article-body {
            font-size: 1.04rem;
            line-height: 1.9;
            color: #33404f;
        }

        .article-body p {
            margin-bottom: 20px;
        }

        .article-body h2 {
            font-size: 1.4rem;
            font-weight: 700;
            margin: 34px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-soft);
            color: var(--text);
        }

        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 28px 0 12px;
            color: var(--text);
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.4rem;
            margin-bottom: 20px;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 8px;
        }

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

        .article-body blockquote {
            background: var(--accent-soft);
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            border-radius: 12px;
            margin: 24px 0;
            color: #4c4233;
        }

        .article-body img {
            border-radius: 16px;
            box-shadow: var(--shadow);
            margin: 20px 0;
        }

        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid rgba(232, 93, 47, .3);
            transition: all .25s ease;
        }

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

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .article-tags .tag-label {
            font-weight: 700;
            color: var(--text);
        }

        .article-tags a {
            background: var(--body-bg);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: .85rem;
            color: var(--text-weak);
            transition: all .25s ease;
        }

        .article-tags a:hover {
            background: rgba(232, 93, 47, .08);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ======= 侧边栏 ======= */
        .aside-sticky {
            position: sticky;
            top: calc(var(--header-h) + 24px);
        }

        .side-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px;
            margin-bottom: 24px;
            overflow: hidden;
        }

        .side-card .side-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 16px;
            color: var(--text);
        }

        .side-card .side-title i {
            color: var(--primary);
        }

        .category-panel {
            background: linear-gradient(135deg, var(--dark), #2c3948);
            border-radius: var(--radius);
            padding: 26px;
            color: #fff;
            margin-bottom: 24px;
            position: relative;
            overflow: hidden;
        }

        .category-panel::after {
            content: "";
            position: absolute;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(244, 185, 66, .14);
            right: -30px;
            bottom: -30px;
        }

        .category-panel h3 {
            color: var(--accent);
            font-size: 1.2rem;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .category-panel p {
            color: rgba(255, 255, 255, .7);
            font-size: .88rem;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .category-panel .btn {
            position: relative;
            z-index: 1;
        }

        .side-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .side-card .tag-cloud a {
            background: var(--body-bg);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: .82rem;
            color: var(--text-weak);
            transition: all .25s ease;
        }

        .side-card .tag-cloud a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .side-card .help-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .side-card .help-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .9rem;
            color: var(--text-weak);
        }

        .side-card .help-list li:last-child {
            border-bottom: none;
        }

        .side-card .help-list li i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }

        .side-card .help-list li span {
            color: var(--text);
            font-weight: 600;
        }

        /* ======= 内容未找到 ======= */
        .not-found {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found i {
            font-size: 3rem;
            color: var(--border);
            margin-bottom: 18px;
            display: block;
        }

        .not-found h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .not-found p {
            color: var(--text-weak);
            margin-bottom: 24px;
        }

        /* ======= 路径帮助 ======= */
        .help-section {
            padding: 50px 0 20px;
        }

        .help-section .section-head {
            margin-bottom: 32px;
        }

        .help-section .section-head h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text);
        }

        .help-section .section-head p {
            color: var(--text-weak);
            margin-bottom: 0;
        }

        .help-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            height: 100%;
            box-shadow: var(--shadow);
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .help-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity .3s ease;
        }

        .help-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .help-card:hover::before {
            opacity: 1;
        }

        .help-card .step-num {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--accent-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }

        .help-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .help-card p {
            font-size: .9rem;
            color: var(--text-weak);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ======= CTA 区域 ======= */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(120deg, #1b2533, #2d3848);
            color: #fff;
            margin-top: 30px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(232, 93, 47, .18);
            right: -120px;
            top: -120px;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(244, 185, 66, .1);
            left: -60px;
            bottom: -80px;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, .7);
            margin-bottom: 28px;
            font-size: 1.02rem;
        }

        .cta-inner .btn-primary {
            font-size: 1rem;
            padding: 14px 36px;
        }

        /* ======= 页脚 ======= */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 50px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand .brand {
            margin-bottom: 16px;
        }

        .footer-brand .brand-text {
            color: #fff;
            font-weight: 700;
        }

        .footer-brand p {
            font-size: .92rem;
            line-height: 1.8;
            max-width: 380px;
            margin: 0;
            color: rgba(255, 255, 255, .55);
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-links a {
            display: block;
            padding: 6px 0;
            font-size: .9rem;
            color: rgba(255, 255, 255, .6);
            transition: all .25s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding: 22px 0;
            font-size: .85rem;
            color: rgba(255, 255, 255, .4);
        }

        .footer-bottom .dot {
            color: var(--primary);
            margin: 0 6px;
        }

        /* ======= 响应式 ======= */
        @media (max-width: 992px) {
            .nav-links {
                display: none;
            }

            .nav-actions .search-box {
                display: none;
            }

            .nav-actions .btn {
                display: none;
            }

            .mobile-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .main-nav {
                gap: 12px;
                min-height: var(--header-h);
            }

            .brand-text {
                font-size: .95rem;
                max-width: 260px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }

            .article-section {
                padding-top: 40px;
            }

            .article-card {
                padding: 24px;
            }

            .aside-sticky {
                position: static;
                margin-top: 24px;
            }

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

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

            .article-hero {
                padding: 48px 0 40px;
            }

            .article-hero h1 {
                font-size: 1.4rem;
            }

            .hero-meta {
                gap: 10px;
            }

            .article-section {
                padding-top: 24px;
            }

            .aside-sticky {
                margin-top: 16px;
            }

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

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

            .brand-icon {
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }

            .brand-text {
                font-size: .88rem;
                max-width: 160px;
            }

            .article-card {
                padding: 18px;
                border-radius: 18px;
            }

            .article-body {
                font-size: .98rem;
            }

            .cta-inner h2 {
                font-size: 1.5rem;
            }

            .cta-section {
                padding: 50px 0;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }