/* roulang page: index */
:root {
            --page: #f7fafd;
            --surface: #ffffff;
            --surface-blue: #eaf3fb;
            --tag: #eff6fc;
            --primary: #2f6fad;
            --primary-dark: #245a8e;
            --title: #18324b;
            --text: #40576c;
            --muted: #627487;
            --border: #dce7f0;
            --teal: #4f8f94;
            --amber: #a96e18;
            --shadow: 0 12px 30px rgba(31,72,110,.08);
            --shadow-hover: 0 18px 38px rgba(31,72,110,.14);
            --radius: 18px;
            --container: 1220px;
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--page);
            font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
            font-size: 15px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: .25s ease; }
        a:hover { color: var(--primary); }
        img { max-width: 100%; display: block; }
        button, input, select, textarea { font: inherit; }
        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 3px solid rgba(79,143,148,.35);
            outline-offset: 3px;
        }
        .container { max-width: var(--container); }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,.96);
            border-bottom: 1px solid var(--border);
            transition: box-shadow .25s ease;
        }
        .site-header.scrolled { box-shadow: 0 8px 24px rgba(24,50,75,.08); }
        .navbar { min-height: 72px; }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--title);
            font-weight: 800;
            letter-spacing: -.03em;
            white-space: nowrap;
        }
        .brand-mark {
            width: 34px;
            height: 34px;
            border: 1px solid #b9d4e8;
            border-radius: 10px;
            display: grid;
            place-items: center;
            color: var(--primary);
            background: var(--surface-blue);
            font-size: 13px;
            font-weight: 900;
        }
        .brand-name { font-size: 17px; }
        .nav-link {
            position: relative;
            color: var(--muted) !important;
            padding: 9px 15px !important;
            border-radius: 11px;
            font-weight: 600;
        }
        .nav-link:hover { color: var(--primary) !important; background: var(--tag); }
        .nav-link.active {
            color: var(--primary) !important;
            background: var(--surface-blue);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 15px;
            right: 15px;
            bottom: 3px;
            height: 2px;
            background: var(--teal);
            border-radius: 4px;
        }
        .nav-actions { display: flex; align-items: center; gap: 10px; }
        .search-toggle {
            border: 1px solid var(--border);
            color: var(--muted);
            background: #fff;
            border-radius: 12px;
            padding: 8px 12px;
        }
        .search-toggle:hover { color: var(--primary); border-color: #a8c8df; background: var(--tag); }
        .btn-main, .btn-outline-custom {
            border-radius: 12px;
            padding: 11px 18px;
            font-weight: 700;
            transition: .25s ease;
        }
        .btn-main {
            color: #fff;
            background: var(--primary);
            border: 1px solid var(--primary);
            box-shadow: 0 8px 18px rgba(47,111,173,.18);
        }
        .btn-main:hover, .btn-main:active {
            color: #fff;
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-outline-custom {
            color: var(--primary);
            border: 1px solid #a9c9df;
            background: transparent;
        }
        .btn-outline-custom:hover { color: var(--primary-dark); background: var(--tag); border-color: var(--primary); }
        .section { padding: 92px 0; }
        .section-heading {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 30px;
            margin-bottom: 32px;
        }
        .eyebrow, .chip, .status, .card-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .04em;
        }
        .eyebrow { color: var(--primary); margin-bottom: 16px; }
        .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--teal); }
        h1, h2, h3, h4 { color: var(--title); line-height: 1.3; font-weight: 800; letter-spacing: -.035em; }
        h1 { font-size: clamp(34px, 4.4vw, 56px); margin: 0 0 22px; }
        h2 { font-size: clamp(28px, 3vw, 36px); margin: 0 0 12px; }
        h3 { font-size: 20px; margin: 0 0 10px; }
        .lead-copy { color: var(--muted); font-size: 17px; max-width: 650px; margin-bottom: 24px; }
        .hero {
            padding: 76px 0 34px;
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .hero-layout {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            align-items: center;
            gap: 64px;
        }
        .hero-list { margin: 22px 0 30px; padding: 0; list-style: none; }
        .hero-list li { display: flex; align-items: center; gap: 10px; margin: 10px 0; color: var(--text); }
        .hero-list li::before {
            content: "✓";
            width: 21px; height: 21px;
            display: grid; place-items: center;
            border-radius: 50%;
            background: var(--surface-blue);
            color: var(--teal);
            font-size: 12px;
            font-weight: 800;
        }
        .hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; }
        .dashboard {
            position: relative;
            min-height: 390px;
            padding: 24px;
            border: 1px solid var(--border);
            border-radius: 24px;
            background: var(--page);
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .dashboard::before {
            content: "";
            position: absolute;
            inset: 0;
            opacity: .5;
            background-image: linear-gradient(#dce7f0 1px, transparent 1px), linear-gradient(90deg,#dce7f0 1px,transparent 1px);
            background-size: 34px 34px;
            pointer-events: none;
        }
        .dashboard-inner { position: relative; z-index: 1; }
        .dashboard-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
        .status { padding: 5px 10px; color: var(--teal); background: #e7f4f3; }
        .status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--teal); }
        .dashboard-title { color: var(--title); font-weight: 800; }
        .big-stat, .mini-stat, .visual-tile {
            background: rgba(255,255,255,.94);
            border: 1px solid var(--border);
            border-radius: 16px;
            box-shadow: 0 8px 20px rgba(31,72,110,.06);
        }
        .big-stat { padding: 22px; margin-bottom: 14px; }
        .stat-caption { color: var(--muted); font-size: 13px; }
        .stat-number { color: var(--title); font-size: 42px; line-height: 1.1; font-weight: 800; margin: 4px 0; }
        .stat-note { color: var(--teal); font-size: 12px; }
        .mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
        .mini-stat { padding: 17px; }
        .mini-number { color: var(--title); font-size: 25px; font-weight: 800; }
        .progress-line { height: 6px; background: #e4edf4; border-radius: 9px; overflow: hidden; margin-top: 9px; }
        .progress-line span { display: block; height: 100%; width: 78%; background: var(--teal); border-radius: inherit; }
        .visual-strip { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 10px; margin-top: 14px; }
        .visual-tile { height: 68px; padding: 10px; position: relative; overflow: hidden; }
        .visual-tile::after { content: ""; position: absolute; width: 80px; height: 80px; border-radius: 50%; background: var(--surface-blue); right: -18px; top: -20px; }
        .visual-tile strong { position: relative; z-index: 1; font-size: 12px; color: var(--primary); }
        .quick-index {
            display: flex;
            gap: 10px;
            overflow-x: auto;
            padding: 22px 0 4px;
            scrollbar-width: thin;
        }
        .chip { flex: 0 0 auto; padding: 8px 13px; color: var(--muted); background: var(--tag); border: 1px solid var(--border); }
        .chip:hover, .chip.active { color: var(--primary); background: var(--surface-blue); border-color: #a9c9df; }
        .section-soft { background: var(--page); }
        .filter-pills { display: flex; flex-wrap: wrap; gap: 8px; justify-content: end; }
        .matrix {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 18px;
        }
        .info-card {
            position: relative;
            min-height: 190px;
            padding: 24px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: .3s ease;
        }
        .info-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: #a9c9df; }
        .info-card:focus-within { border-color: var(--primary); }
        .info-card.main-card { grid-column: span 6; grid-row: span 2; min-height: 398px; background: var(--surface-blue); }
        .info-card.small-card { grid-column: span 3; }
        .card-label { color: var(--primary); background: rgba(255,255,255,.75); padding: 6px 9px; margin-bottom: 28px; }
        .main-card .card-label { background: #fff; }
        .card-copy { color: var(--muted); max-width: 330px; }
        .tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
        .tag-row span { padding: 4px 8px; color: var(--muted); background: var(--tag); border-radius: 7px; font-size: 12px; }
        .card-link { position: absolute; bottom: 21px; right: 24px; color: var(--primary); font-weight: 800; font-size: 14px; }
        .card-link span { display: inline-block; transition: transform .25s ease; }
        .info-card:hover .card-link span { transform: translateX(5px); }
        .abstract-cover {
            position: absolute; right: 24px; bottom: 22px; width: 145px; height: 108px;
            border: 1px solid #c5dceb; border-radius: 14px;
            background: #fff;
            padding: 12px;
        }
        .abstract-cover i { display: block; height: 8px; width: 70%; background: #b9d7e9; margin-bottom: 9px; border-radius: 4px; }
        .abstract-cover i:nth-child(2) { width: 92%; background: #e1edf5; }
        .abstract-cover i:nth-child(3) { width: 53%; background: #d3e7e8; }
        .comparison-wrap { display: grid; grid-template-columns: 1fr 70px 1fr; align-items: stretch; gap: 18px; }
        .compare-card { padding: 28px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
        .compare-card.ordered { background: var(--surface-blue); border-color: #b9d6e9; }
        .compare-label { display: inline-block; padding: 6px 10px; border-radius: 8px; color: var(--muted); background: #f1f4f6; font-size: 12px; font-weight: 800; margin-bottom: 17px; }
        .ordered .compare-label { color: var(--primary); background: #fff; }
        .compare-list { padding: 0; margin: 18px 0 0; list-style: none; }
        .compare-list li { display: flex; gap: 11px; padding: 10px 0; border-bottom: 1px solid rgba(220,231,240,.75); }
        .compare-list li:last-child { border-bottom: 0; }
        .compare-list b { color: var(--teal); }
        .compare-node { align-self: center; justify-self: center; width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; color: var(--primary); background: var(--tag); border: 1px solid var(--border); font-weight: 800; }
        .trend { margin-top: 22px; padding: 17px 20px; border-left: 3px solid var(--teal); background: #fff; border-radius: 10px; color: var(--muted); font-size: 13px; }
        .trend-bars { display: flex; align-items: end; gap: 7px; height: 32px; margin-top: 10px; }
        .trend-bars span { flex: 1; background: #b9d7e9; border-radius: 4px 4px 0 0; }
        .trend-bars span:nth-child(1){height:28%}.trend-bars span:nth-child(2){height:43%}.trend-bars span:nth-child(3){height:54%}.trend-bars span:nth-child(4){height:72%}.trend-bars span:nth-child(5){height:88%}
        .faq-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 50px; align-items: start; }
        .faq-index { padding: 23px; background: var(--surface-blue); border: 1px solid #c9deed; border-radius: var(--radius); }
        .faq-index strong { display: block; color: var(--title); font-size: 20px; margin-bottom: 12px; }
        .faq-index ol { margin: 0; padding-left: 22px; color: var(--muted); }
        .accordion-item { margin-bottom: 12px; border: 1px solid var(--border) !important; border-radius: 15px !important; overflow: hidden; box-shadow: 0 6px 16px rgba(31,72,110,.04); }
        .accordion-button { color: var(--title); background: #fff; font-weight: 700; padding: 19px 22px; box-shadow: none !important; }
        .accordion-button:not(.collapsed) { color: var(--primary); background: var(--surface-blue); }
        .accordion-button::after { content: "+"; background-image: none; color: var(--teal); font-size: 22px; font-weight: 400; width: auto; height: auto; }
        .accordion-button:not(.collapsed)::after { content: "−"; transform: none; }
        .accordion-body { color: var(--muted); background: var(--surface-blue); padding: 0 22px 21px; }
        .cta-panel { padding: 52px; border-radius: 24px; background: var(--surface-blue); border: 1px solid #c8deed; }
        .cta-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 55px; align-items: center; }
        .trust-list { list-style: none; padding: 0; margin: 24px 0 0; }
        .trust-list li { margin: 12px 0; color: var(--text); }
        .trust-list b { display: inline-grid; place-items: center; width: 24px; height: 24px; margin-right: 8px; color: var(--teal); border: 1px solid #b9d7d8; border-radius: 50%; font-size: 12px; }
        .form-box { padding: 25px; background: #fff; border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow); }
        .form-label { color: var(--title); font-weight: 700; font-size: 13px; margin-bottom: 6px; }
        .form-control, .form-select { border: 1px solid var(--border); border-radius: 10px; padding: 11px 13px; color: var(--text); background-color: #fff; }
        .form-control:focus, .form-select:focus { border-color: var(--teal); box-shadow: 0 0 0 4px rgba(79,143,148,.12); }
        .form-check-label { color: var(--muted); font-size: 13px; }
        .form-check-input:checked { background-color: var(--primary); border-color: var(--primary); }
        .form-note { color: var(--muted); font-size: 12px; margin-top: 13px; }
        .footer { padding: 52px 0 24px; color: #bfd0df; background: var(--title); }
        .footer .brand { color: #fff; }
        .footer .brand-mark { color: #b9d7e9; background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.2); }
        .footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
        .footer p { color: #aebfd0; font-size: 13px; margin-bottom: 0; }
        .footer a { color: #bfd0df; font-size: 13px; display: block; margin-bottom: 8px; }
        .footer a:hover { color: #e7f4fb; }
        .footer-bottom { margin-top: 35px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.13); font-size: 12px; color: #94aabd; }
        .search-box { display: none; position: absolute; top: 69px; right: 18px; width: 280px; padding: 12px; background: #fff; border: 1px solid var(--border); border-radius: 13px; box-shadow: var(--shadow-hover); }
        .search-box.show { display: block; }
        .search-box .form-control { font-size: 13px; }
        .mobile-cta { margin-top: 22px; }
        @media (max-width: 1199px) {
            .hero-layout { gap: 38px; }
            .matrix .main-card { grid-column: span 6; }
            .matrix .small-card { grid-column: span 3; }
        }
        @media (max-width: 991px) {
            .navbar { min-height: 64px; }
            .desktop-actions { display: none; }
            .hero { padding-top: 56px; }
            .hero-layout, .cta-layout, .faq-layout { grid-template-columns: 1fr; gap: 35px; }
            .dashboard { max-width: 680px; }
            .matrix { grid-template-columns: repeat(2, 1fr); }
            .info-card.main-card, .info-card.small-card { grid-column: auto; grid-row: auto; }
            .info-card.main-card { min-height: 300px; }
            .section { padding: 70px 0; }
            .section-heading { align-items: start; flex-direction: column; gap: 16px; }
            .filter-pills { justify-content: start; }
            .cta-panel { padding: 36px; }
        }
        @media (max-width: 767px) {
            .brand-name { font-size: 15px; }
            h1 { font-size: 36px; }
            h2 { font-size: 29px; }
            .hero-actions .btn-main, .hero-actions .btn-outline-custom { width: 100%; text-align: center; }
            .dashboard { padding: 18px; min-height: 0; }
            .visual-strip { grid-template-columns: 1fr 1fr; }
            .visual-tile:first-child { grid-column: span 2; }
            .matrix { grid-template-columns: 1fr; }
            .info-card { min-height: 175px; padding: 21px; }
            .abstract-cover { opacity: .65; right: 18px; }
            .comparison-wrap { grid-template-columns: 1fr; }
            .compare-node { transform: rotate(90deg); }
            .section { padding: 55px 0; }
            .cta-panel { padding: 28px 20px; }
            .form-box { padding: 20px; }
        }
        @media (max-width: 480px) {
            body { font-size: 14px; }
            .container { padding-left: 18px; padding-right: 18px; }
            h1 { font-size: 32px; }
            .stat-number { font-size: 36px; }
            .mini-grid { gap: 9px; }
            .mini-stat { padding: 14px 12px; }
            .card-link { right: 20px; }
            .abstract-cover { width: 112px; height: 86px; }
            .dashboard-top { align-items: flex-start; gap: 8px; flex-direction: column; }
        }

/* roulang page: category1 */
:root {
      --page:#f7fafd;
      --surface:#fff;
      --surface-blue:#eaf3fb;
      --tag:#eff6fc;
      --primary:#2f6fad;
      --primary-dark:#245a8e;
      --title:#18324b;
      --text:#40576c;
      --muted:#627487;
      --border:#dce7f0;
      --teal:#4f8f94;
      --amber:#a96e18;
      --shadow:0 12px 30px rgba(31,72,110,.08);
      --shadow-hover:0 18px 38px rgba(31,72,110,.14);
      --radius:18px;
      --container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--page);color:var(--text);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    a:hover{color:var(--primary)}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(79,143,148,.35);outline-offset:3px
    }
    .container{max-width:var(--container)}
    .site-header{
      position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);
      border-bottom:1px solid var(--border);transition:box-shadow .25s ease
    }
    .site-header.scrolled{box-shadow:0 8px 24px rgba(24,50,75,.08)}
    .navbar{min-height:72px}
    .brand{display:inline-flex;align-items:center;gap:10px;color:var(--title);font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{
      width:34px;height:34px;border:1px solid #b9d4e8;border-radius:10px;display:grid;
      place-items:center;color:var(--primary);background:var(--surface-blue);font-size:13px;font-weight:900
    }
    .brand-name{font-size:17px}
    .navbar-toggler{padding:8px}
    .navbar-toggler-icon{
      width:25px;height:18px;display:block;background:none;position:relative;border-top:2px solid var(--title);
      border-bottom:2px solid var(--title)
    }
    .navbar-toggler-icon:after{content:"";position:absolute;left:0;right:0;top:6px;border-top:2px solid var(--title)}
    .nav-link{
      position:relative;color:var(--muted)!important;padding:9px 15px!important;border-radius:11px;font-weight:600
    }
    .nav-link:hover{color:var(--primary)!important;background:var(--tag)}
    .nav-link.active{color:var(--primary)!important;background:var(--surface-blue)}
    .nav-link.active:after{
      content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;background:var(--teal);border-radius:4px
    }
    .nav-actions{display:flex;align-items:center;gap:10px}
    .search-toggle{
      border:1px solid var(--border);color:var(--muted);background:#fff;border-radius:12px;padding:8px 12px
    }
    .search-toggle:hover{color:var(--primary);border-color:#a8c8df;background:var(--tag)}
    .btn-main,.btn-outline-custom{
      display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:11px 18px;
      font-weight:700;transition:.25s ease
    }
    .btn-main{color:#fff;background:var(--primary);border:1px solid var(--primary);box-shadow:0 8px 18px rgba(47,111,173,.18)}
    .btn-main:hover,.btn-main:active{color:#fff;background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-2px)}
    .btn-outline-custom{color:var(--primary);border:1px solid #a9c9df;background:transparent}
    .btn-outline-custom:hover{color:var(--primary-dark);background:var(--tag);border-color:var(--primary)}
    .search-box{
      position:absolute;right:0;top:68px;width:330px;padding:16px;background:#fff;border:1px solid var(--border);
      border-radius:14px;box-shadow:var(--shadow);display:none
    }
    .search-box.show{display:block}
    .form-control,.form-select{
      border:1px solid var(--border);border-radius:11px;padding:11px 13px;color:var(--text);background:#fff
    }
    .form-control:focus,.form-select:focus{border-color:var(--teal);box-shadow:0 0 0 4px rgba(79,143,148,.12)}
    .form-note{font-size:12px;color:var(--muted);margin-top:8px}
    .offcanvas{background:var(--surface);width:min(86vw,360px)!important}
    .offcanvas-header{border-bottom:1px solid var(--border)}
    .offcanvas-body .nav-link{margin:5px 0}
    .page-head{padding:62px 0 40px;background:#fff;border-bottom:1px solid var(--border)}
    .breadcrumbs{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:18px}
    .breadcrumbs span{color:#a0afbc}
    .eyebrow,.chip,.status,.card-label{
      display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.04em
    }
    .eyebrow{color:var(--primary);margin-bottom:14px}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--teal)}
    h1,h2,h3,h4{color:var(--title);line-height:1.3}
    h1{font-size:clamp(32px,4vw,50px);letter-spacing:-.045em;margin:0 0 16px;font-weight:850}
    h2{font-size:30px;letter-spacing:-.03em;font-weight:800}
    h3{font-size:20px;font-weight:800}
    .lead-copy{color:var(--muted);font-size:17px;max-width:760px;margin:0}
    .meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
    .status{padding:7px 12px;color:var(--teal);background:#edf7f6;border:1px solid #cde5e1}
    .status.amber{color:var(--amber);background:#fff7e9;border-color:#ecd9af}
    .chip{padding:8px 13px;color:var(--muted);background:var(--tag);border:1px solid var(--border)}
    .chip:hover,.chip.active{color:var(--primary);background:var(--surface-blue);border-color:#a9c9df}
    .filter-strip{
      display:flex;gap:8px;overflow-x:auto;padding:16px 0 2px;scrollbar-width:none
    }
    .filter-strip::-webkit-scrollbar{display:none}
    .section{padding:82px 0}
    .section-soft{background:var(--page)}
    .section-heading{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
    .section-heading p{max-width:560px;color:var(--muted);margin:0}
    .index-layout{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start}
    .side-card,.info-card,.guide-card,.notice-bar,.faq-wrap{
      background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .side-card{padding:22px;position:sticky;top:96px}
    .side-card h3{font-size:17px;margin:0 0 16px}
    .side-menu{list-style:none;padding:0;margin:0}
    .side-menu li+li{margin-top:7px}
    .side-menu a{
      display:flex;gap:12px;align-items:center;padding:12px;border-radius:12px;color:var(--muted);font-weight:650
    }
    .side-menu a:hover,.side-menu a.active{color:var(--primary);background:var(--surface-blue)}
    .side-num{width:26px;height:26px;border-radius:8px;background:var(--tag);display:grid;place-items:center;font-size:12px;color:var(--primary);font-weight:800}
    .side-note{margin-top:22px;padding:16px;background:var(--surface-blue);border-radius:13px;color:var(--muted);font-size:13px}
    .sort-bar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:18px;padding:13px 16px;background:#fff;border:1px solid var(--border);border-radius:13px}
    .sort-state{font-weight:700;color:var(--title)}
    .sort-buttons{display:flex;gap:7px}
    .sort-buttons button{border:1px solid var(--border);background:#fff;color:var(--muted);border-radius:9px;padding:6px 10px;font-size:13px}
    .sort-buttons button.active,.sort-buttons button:hover{background:var(--surface-blue);color:var(--primary);border-color:#a9c9df}
    .guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
    .guide-card{padding:0;overflow:hidden;display:grid;grid-template-columns:145px 1fr;min-height:190px;transition:.25s ease}
    .guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#b5d2e5}
    .cover{
      min-height:100%;background:var(--surface-blue);position:relative;overflow:hidden;padding:17px;
      display:flex;flex-direction:column;justify-content:space-between
    }
    .cover:before,.cover:after{content:"";position:absolute;border:1px solid rgba(47,111,173,.2);border-radius:50%}
    .cover:before{width:130px;height:130px;right:-55px;top:22px}
    .cover:after{width:80px;height:80px;left:-34px;bottom:-20px}
    .cover-number{position:relative;z-index:1;color:var(--primary);font-weight:900;font-size:26px}
    .cover-lines{position:relative;z-index:1}
    .cover-lines i{display:block;width:68%;height:4px;background:#b7d2e5;margin-top:7px;border-radius:4px}
    .cover-lines i:nth-child(2){width:46%}
    .guide-content{padding:20px}
    .card-label{padding:5px 9px;background:var(--tag);color:var(--primary);margin-bottom:11px}
    .guide-content h3{font-size:18px;margin:0 0 8px}
    .guide-content p{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 12px}
    .tag-list{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:15px}
    .tag-list span{font-size:11px;color:var(--muted);padding:3px 7px;border-radius:7px;background:#f5f8fa}
    .card-foot{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}
    .view-link{font-weight:750;color:var(--primary)}
    .view-link span{display:inline-block;transition:.2s}
    .guide-card:hover .view-link span{transform:translateX(4px)}
    .notice-bar{
      margin-top:24px;padding:20px 24px;display:flex;align-items:center;gap:18px;background:var(--surface-blue);box-shadow:none
    }
    .notice-icon{width:38px;height:38px;border-radius:12px;background:#fff;color:var(--teal);display:grid;place-items:center;font-weight:900;flex:0 0 auto}
    .notice-bar strong{color:var(--title);display:block}
    .notice-bar p{margin:2px 0 0;color:var(--muted);font-size:14px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:22px;background:#fff;border:1px solid var(--border);border-radius:16px;position:relative}
    .step-number{color:var(--teal);font-size:13px;font-weight:900;letter-spacing:.08em}
    .step h3{font-size:17px;margin:10px 0 6px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .faq-layout{display:grid;grid-template-columns:250px 1fr;gap:28px}
    .faq-index{padding:24px;border-left:3px solid var(--teal);background:var(--surface-blue);border-radius:14px;height:max-content}
    .faq-index h3{font-size:18px;margin:0 0 9px}
    .faq-index p{margin:0;color:var(--muted);font-size:14px}
    .accordion-item{border:1px solid var(--border)!important;border-radius:15px!important;overflow:hidden;margin-bottom:10px;background:#fff}
    .accordion-button{font-weight:750;color:var(--title);background:#fff;padding:19px 22px;box-shadow:none!important}
    .accordion-button:not(.collapsed){background:var(--surface-blue);color:var(--primary)}
    .accordion-button:after{background-image:none;content:"+";font-size:23px;color:var(--teal);width:auto;height:auto}
    .accordion-button:not(.collapsed):after{content:"−";transform:none}
    .accordion-body{padding:0 22px 20px;color:var(--muted);background:var(--surface-blue);font-size:14px}
    .cta-panel{padding:42px;border-radius:24px;background:var(--surface-blue);border:1px solid #c9dfed}
    .cta-panel h2{margin:0 0 12px}
    .cta-panel p{color:var(--muted);max-width:620px;margin:0 0 20px}
    .footer{padding:58px 0 22px;background:var(--title);color:#b9c9d7}
    .footer .brand{color:#fff}
    .footer .brand-mark{background:rgba(255,255,255,.09);border-color:#52718a;color:#cbe4f5}
    .footer h4{color:#fff;font-size:15px;margin:0 0 14px}
    .footer a{display:block;color:#b9c9d7;margin:6px 0;font-size:14px}
    .footer a:hover{color:#bde0f6}
    .footer p{font-size:14px;margin:0;max-width:390px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:38px;padding-top:18px;font-size:12px;color:#91a7b8}
    @media (max-width:1199px){
      .container{max-width:960px}
      .guide-grid{grid-template-columns:1fr}
    }
    @media (max-width:991px){
      .container{max-width:720px}
      .desktop-actions,.navbar-collapse{display:none!important}
      .index-layout,.faq-layout{grid-template-columns:1fr}
      .side-card{position:static}
      .steps{grid-template-columns:repeat(2,1fr)}
      .page-head{padding-top:46px}
    }
    @media (max-width:767px){
      .container{max-width:100%;padding-left:20px;padding-right:20px}
      .navbar{min-height:66px}
      .brand-name{font-size:15px}
      .section{padding:55px 0}
      .section-heading{display:block;margin-bottom:22px}
      .section-heading p{margin-top:10px}
      h2{font-size:26px}
      h1{font-size:34px}
      .guide-card{grid-template-columns:112px 1fr}
      .guide-content{padding:17px}
      .cover{padding:13px}
      .notice-bar{align-items:flex-start;padding:17px}
      .sort-bar{align-items:flex-start;flex-direction:column}
      .cta-panel{padding:28px 22px}
    }
    @media (max-width:480px){
      .container{padding-left:16px;padding-right:16px}
      .brand-name{font-size:14px}
      .brand-mark{width:31px;height:31px}
      .page-head{padding:38px 0 28px}
      h1{font-size:30px}
      .lead-copy{font-size:15px}
      .guide-card{grid-template-columns:1fr}
      .cover{min-height:105px}
      .cover-number{font-size:22px}
      .steps{grid-template-columns:1fr}
      .sort-buttons{width:100%;overflow-x:auto}
      .sort-buttons button{white-space:nowrap}
      .hero-actions .btn-main,.hero-actions .btn-outline-custom{width:100%}
      .footer{padding-top:44px}
    }