/* roulang page: index */
:root {
      --c-primary: #2A6FD4;
      --c-primary-hover: #1F5CB4;
      --c-primary-soft: #EAF1FC;
      --c-accent: #F07B34;
      --c-accent-soft: #FFF1E8;
      --c-teal: #2FB3A0;
      --c-teal-soft: #E8F8F5;
      --c-ink: #10365C;
      --c-text: #1C2B3A;
      --c-muted: #5A6E82;
      --c-faint: #8A9AAC;
      --bg-page: #F5F8FC;
      --bg-card: #FFFFFF;
      --border: #E4ECF6;
      --line: #EDF2F8;
      --radius-card: 16px;
      --radius-sm: 10px;
      --radius-pill: 999px;
      --shadow-sm: 0 1px 2px rgba(16, 54, 92, .06);
      --shadow-md: 0 8px 24px rgba(16, 54, 92, .08);
      --shadow-lg: 0 18px 40px rgba(16, 54, 92, .12);
      --container: 1200px;
      --space-section: 96px;
      --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font);
      color: var(--c-text);
      background: #FFFFFF;
      font-size: 16px;
      line-height: 1.85;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    body.no-scroll { overflow: hidden; }
    img { max-width: 100%; display: block; }
    a { color: var(--c-primary); text-decoration: none; transition: color .18s ease; }
    a:hover { color: var(--c-primary-hover); }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }
    h1, h2, h3, h4, p { margin: 0; }
    h1, h2, h3, h4 { color: var(--c-ink); font-weight: 700; letter-spacing: -.01em; }
    h1 { font-size: clamp(30px, 4.2vw, 46px); line-height: 1.25; }
    h2 { font-size: clamp(24px, 2.6vw, 34px); line-height: 1.35; }
    h3 { font-size: 20px; line-height: 1.5; }
    h4 { font-size: 17px; line-height: 1.6; }
    .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
    .sr-only {
      position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
      overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
    }
    .skip-link {
      position: fixed; left: 12px; top: 12px; z-index: 300;
      transform: translateY(-150%); background: #fff; color: var(--c-primary);
      border: 1px solid var(--border); border-radius: 10px; padding: 10px 16px;
      box-shadow: var(--shadow-md); font-weight: 700; transition: transform .18s ease;
    }
    .skip-link:focus { transform: translateY(0); }

    .kicker {
      display: inline-flex; align-items: center; gap: 10px;
      color: var(--c-primary); font-size: 13px; font-weight: 700;
      letter-spacing: .05em; line-height: 1.4;
    }
    .kicker::before {
      content: ""; width: 40px; height: 3px; border-radius: var(--radius-pill);
      background: var(--c-primary);
    }
    .text-link {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--c-primary); font-size: 14px; font-weight: 700; line-height: 1.5;
    }
    .text-link span { transition: transform .18s ease; }
    .text-link:hover span { transform: translateX(4px); }

    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 46px; padding: 0 22px; border-radius: var(--radius-sm);
      border: 1px solid transparent; font-size: 15px; font-weight: 700; line-height: 1;
      white-space: nowrap; transition: background .18s ease, color .18s ease,
        border-color .18s ease, transform .18s ease, box-shadow .18s ease;
    }
    .btn:hover { transform: translateY(-1px); }
    .btn:active { transform: translateY(0); }
    .btn-primary {
      background: var(--c-primary); color: #fff; border-color: var(--c-primary);
      box-shadow: 0 6px 16px rgba(42, 111, 212, .22);
    }
    .btn-primary:hover { background: var(--c-primary-hover); border-color: var(--c-primary-hover); color: #fff; }
    .btn-secondary { background: #fff; color: var(--c-primary); border-color: var(--c-primary); }
    .btn-secondary:hover { background: var(--c-primary-soft); color: var(--c-primary-hover); }
    .btn-sm { min-height: 40px; padding: 0 16px; font-size: 14px; }

    .badge {
      display: inline-flex; align-items: center; min-height: 24px; padding: 0 10px;
      border-radius: var(--radius-pill); font-size: 12px; font-weight: 700; line-height: 1;
      white-space: nowrap;
    }
    .badge-blue { color: var(--c-primary); background: var(--c-primary-soft); }
    .badge-orange { color: #B6531A; background: var(--c-accent-soft); }
    .badge-teal { color: #167B6E; background: var(--c-teal-soft); }

    .card {
      background: var(--bg-card); border: 1px solid var(--border);
      border-radius: var(--radius-card); box-shadow: var(--shadow-md);
      transition: transform .18s ease, box-shadow .18s ease;
    }
    .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

    .site-header {
      position: fixed; inset: 0 0 auto 0; height: 72px; z-index: 100;
      background: rgba(255, 255, 255, .55);
      -webkit-backdrop-filter: blur(14px) saturate(140%);
      backdrop-filter: blur(14px) saturate(140%);
      border-bottom: 1px solid rgba(16, 54, 92, .08);
      box-shadow: 0 8px 24px rgba(16, 54, 92, .06);
      transition: height .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .site-header.is-scrolled {
      height: 64px; background: rgba(255, 255, 255, .92);
      box-shadow: 0 10px 28px rgba(16, 54, 92, .12);
    }
    .nav-wrap { height: 100%; display: flex; align-items: center; gap: 28px; position: relative; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: none; color: inherit; }
    .brand:hover { color: inherit; }
    .brand-mark {
      width: 38px; height: 38px; border-radius: 12px;
      display: grid; place-items: center;
      background: linear-gradient(135deg, var(--c-primary), #5B97EA);
      color: #fff; font-size: 19px; font-weight: 800;
      box-shadow: 0 6px 14px rgba(42, 111, 212, .25);
    }
    .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
    .brand-text strong { color: var(--c-ink); font-size: 18px; font-weight: 800; letter-spacing: -.01em; }
    .brand-text small { color: var(--c-muted); font-size: 11px; font-weight: 500; letter-spacing: .08em; }
    .main-nav { display: flex; align-items: center; gap: 4px; margin-left: 8px; }
    .nav-link {
      position: relative; display: inline-flex; align-items: center; height: 40px;
      padding: 0 14px; border-radius: 10px; color: var(--c-text);
      font-size: 15px; font-weight: 600; transition: background .18s ease, color .18s ease;
    }
    .nav-link:hover { color: var(--c-primary); background: var(--c-primary-soft); }
    .nav-link.active { color: var(--c-primary); }
    .nav-link.active::after {
      content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px;
      height: 2px; border-radius: var(--radius-pill); background: var(--c-primary);
    }
    .nav-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
    .icon-btn {
      width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center;
      background: rgba(255, 255, 255, .66); border: 1px solid var(--border);
      border-radius: 10px; color: var(--c-ink); transition: all .18s ease;
    }
    .icon-btn:hover { background: #fff; color: var(--c-primary); border-color: #CFDEF1; transform: translateY(-1px); }
    .icon-btn svg { width: 19px; height: 19px; }
    .btn-nav { min-height: 42px; padding: 0 18px; }
    .menu-toggle {
      display: none; width: 42px; height: 42px; padding: 0;
      border: 1px solid var(--border); border-radius: 10px;
      background: rgba(255, 255, 255, .7);
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span {
      display: block; width: 18px; height: 2px; border-radius: 2px;
      background: var(--c-ink); transition: transform .2s ease, opacity .2s ease;
    }
    .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .search-pop {
      position: absolute; right: 24px; top: calc(100% + 12px);
      width: min(360px, calc(100vw - 48px)); padding: 16px; background: #fff;
      border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow-lg);
      opacity: 0; visibility: hidden; transform: translateY(-6px);
      transition: opacity .2s ease, transform .2s ease, visibility .2s ease; z-index: 130;
    }
    .search-pop.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
    .search-form { display: flex; gap: 8px; }
    .search-form input {
      flex: 1; min-width: 0; height: 42px; padding: 0 12px;
      border: 1px solid #D8E3EF; border-radius: 10px; color: var(--c-text); background: #fff;
    }
    .search-form input:focus {
      outline: none; border-color: var(--c-primary);
      box-shadow: 0 0 0 3px rgba(42, 111, 212, .12);
    }
    .search-hint { margin-top: 10px; color: var(--c-faint); font-size: 12px; line-height: 1.6; }

    .nav-overlay {
      position: fixed; inset: 0; z-index: 110; background: rgba(16, 54, 92, .42);
      opacity: 0; visibility: hidden; transition: opacity .2s ease, visibility .2s ease;
    }
    .nav-overlay.is-open { opacity: 1; visibility: visible; }
    .menu-drawer {
      position: fixed; top: 0; right: 0; bottom: 0; z-index: 120;
      width: min(360px, 90vw); padding: 22px 22px 28px; background: #fff;
      box-shadow: -18px 0 48px rgba(16, 54, 92, .18);
      display: flex; flex-direction: column; transform: translateX(100%);
      transition: transform .2s ease;
    }
    .menu-drawer.is-open { transform: translateX(0); }
    .drawer-head {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      padding-bottom: 18px; border-bottom: 1px solid var(--line);
    }
    .drawer-close {
      width: 40px; height: 40px; padding: 0; border: 1px solid var(--border);
      border-radius: 10px; background: #fff; color: var(--c-ink);
      font-size: 26px; line-height: 1;
    }
    .drawer-close:hover { color: var(--c-primary); background: var(--c-primary-soft); }
    .drawer-nav { display: flex; flex-direction: column; padding: 16px 0; }
    .drawer-link {
      display: flex; align-items: center; min-height: 48px; padding: 0 14px;
      border-radius: 10px; color: var(--c-text); font-weight: 600;
    }
    .drawer-link:hover, .drawer-link.active { background: var(--c-primary-soft); color: var(--c-primary); }
    .drawer-foot {
      margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line);
      display: grid; gap: 12px;
    }
    .drawer-foot p { color: var(--c-muted); font-size: 13px; word-break: break-all; }

    .hero {
      position: relative; min-height: 620px; display: flex; align-items: center;
      overflow: hidden; background: #EAF1FC;
    }
    .hero-bg {
      position: absolute; inset: 0; background-image:
        linear-gradient(90deg, rgba(255, 255, 255, .98) 0%, rgba(255, 255, 255, .92) 34%, rgba(255, 255, 255, .42) 68%, rgba(255, 255, 255, .12) 100%),
        url('/assets/images/backpic/back-1.png');
      background-size: cover; background-position: center;
    }
    .hero-inner {
      position: relative; z-index: 1; width: 100%;
      display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
      gap: 56px; align-items: center; padding-top: 144px; padding-bottom: 72px;
    }
    .hero-eyebrow {
      display: inline-flex; align-items: center; gap: 8px; min-height: 30px;
      padding: 0 12px; margin-bottom: 18px; border-radius: var(--radius-pill);
      background: rgba(42, 111, 212, .1); color: var(--c-primary);
      font-size: 13px; font-weight: 700; border: 1px solid rgba(42, 111, 212, .16);
    }
    .hero h1 { max-width: 760px; }
    .hero-lead { max-width: 540px; margin-top: 18px; color: var(--c-muted); font-size: 18px; line-height: 1.75; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-points { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 28px; color: var(--c-muted); font-size: 14px; }
    .hero-points span { display: inline-flex; align-items: center; gap: 8px; }
    .hero-points i { width: 7px; height: 7px; border-radius: 50%; background: var(--c-accent); display: inline-block; }
    .hero-visual { position: relative; }
    .hero-photo {
      width: 100%; aspect-ratio: 16 / 10; object-fit: cover;
      border-radius: 20px; border: 1px solid rgba(255, 255, 255, .8);
      box-shadow: var(--shadow-lg);
    }
    .hero-float {
      position: absolute; right: -18px; bottom: 26px; width: 250px; padding: 18px;
      background: #fff; border: 1px solid var(--border); border-radius: 14px;
      box-shadow: var(--shadow-lg);
    }
    .hero-float .badge { margin-bottom: 10px; }
    .float-title { display: block; margin-bottom: 6px; color: var(--c-ink); font-size: 17px; font-weight: 800; }
    .hero-float p { color: var(--c-muted); font-size: 13px; line-height: 1.7; }

    .section { padding: var(--space-section) 0; }
    .section-soft { background: var(--bg-page); border-block: 1px solid var(--line); }
    .section-head {
      display: flex; justify-content: space-between; align-items: flex-end;
      gap: 48px; margin-bottom: 40px;
    }
    .section-head-left { max-width: 620px; }
    .section-head-left h2 { margin-top: 12px; }
    .section-head-right {
      max-width: 430px; display: flex; flex-direction: column; align-items: flex-start;
      gap: 14px; color: var(--c-muted); font-size: 15px;
    }

    .service-grid {
      display: grid; grid-template-columns: 1.45fr 1fr; gap: 24px; align-items: stretch;
    }
    .service-main { overflow: hidden; display: flex; flex-direction: column; }
    .service-photo img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
    .service-main-body {
      padding: 26px 28px 28px; display: flex; flex-direction: column;
      align-items: flex-start; gap: 14px; flex: 1;
    }
    .service-main-body p { color: var(--c-muted); font-size: 15px; }
    .check-list {
      width: 100%; display: grid; gap: 8px; margin: 4px 0 0; padding: 0; list-style: none;
    }
    .check-list li { position: relative; padding-left: 22px; color: var(--c-text); font-size: 14px; }
    .check-list li::before {
      content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 8px;
      border-radius: 50%; background: var(--c-teal); box-shadow: 0 0 0 4px var(--c-teal-soft);
    }
    .service-small-stack { display: grid; gap: 24px; }
    .service-card {
      padding: 24px; display: flex; flex-direction: column;
      align-items: flex-start; gap: 12px;
    }
    .service-card p { color: var(--c-muted); font-size: 14px; }

    .stats-band {
      padding: 48px 0; background: var(--bg-page); border-block: 1px solid var(--border);
    }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
    .stat-item { padding: 6px 28px; border-left: 1px solid #DCE7F4; }
    .stat-item:first-child { border-left: 0; padding-left: 0; }
    .stat-number {
      display: block; color: var(--c-primary); font-size: clamp(38px, 4vw, 48px);
      font-weight: 800; line-height: 1; letter-spacing: -.03em;
      font-variant-numeric: tabular-nums;
    }
    .stat-item:nth-child(2) .stat-number { color: var(--c-accent); }
    .stat-label { display: block; margin-top: 10px; color: var(--c-ink); font-size: 16px; font-weight: 700; }
    .stat-item p { margin-top: 4px; color: var(--c-muted); font-size: 13px; }

    .story-list { display: grid; }
    .story-row {
      display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
      padding: 44px 0; border-top: 1px solid var(--line);
    }
    .story-row:first-child { border-top: 0; padding-top: 0; }
    .story-row.reverse .story-media { order: 2; }
    .story-media img {
      width: 100%; aspect-ratio: 16 / 10; object-fit: cover;
      border-radius: 16px; box-shadow: var(--shadow-md);
    }
    .story-copy { max-width: 540px; }
    .story-copy h3 { margin-top: 12px; }
    .story-copy p { margin-top: 12px; color: var(--c-muted); font-size: 15px; }
    .story-copy .text-link { margin-top: 16px; }

    .steps-panel { padding: 40px; }
    .steps-panel:hover { transform: none; box-shadow: var(--shadow-md); }
    .step-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .step-item {
      position: relative; padding: 24px; background: #F8FBFF;
      border: 1px solid var(--border); border-radius: 16px;
    }
    .step-item::after {
      content: ""; position: absolute; top: 46px; right: -25px; width: 24px; height: 1px;
      background: #CADBEF;
    }
    .step-item:last-child::after { display: none; }
    .step-num {
      width: 46px; height: 46px; border-radius: 50%; display: inline-flex;
      align-items: center; justify-content: center; background: var(--c-primary);
      color: #fff; font-size: 18px; font-weight: 800;
      box-shadow: 0 8px 18px rgba(42, 111, 212, .24);
    }
    .step-item h3 { margin-top: 18px; font-size: 18px; }
    .step-item p { margin-top: 8px; color: var(--c-muted); font-size: 14px; }

    .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .news-card { overflow: hidden; display: flex; flex-direction: column; }
    .news-cover { display: block; overflow: hidden; background: #EDF3FA; }
    .news-cover img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform .3s ease; }
    .news-card:hover .news-cover img { transform: scale(1.04); }
    .news-body {
      padding: 20px 22px 22px; display: flex; flex-direction: column;
      align-items: flex-start; gap: 10px; flex: 1;
    }
    .news-meta {
      width: 100%; display: flex; align-items: center; justify-content: space-between;
      gap: 12px; color: var(--c-faint); font-size: 12px;
    }
    .news-meta time { font-variant-numeric: tabular-nums; }
    .news-title {
      font-size: 18px; line-height: 1.5; display: -webkit-box;
      -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    }
    .news-title a { color: var(--c-ink); }
    .news-title a:hover { color: var(--c-primary); }
    .news-summary {
      color: var(--c-muted); font-size: 14px; line-height: 1.7;
      display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .news-body .text-link { margin-top: auto; font-size: 13px; }
    .news-card.is-filtered-out { display: none; }
    .search-empty {
      padding: 24px; margin-top: 20px; border: 1px dashed #BFD2E8;
      border-radius: 12px; background: #F8FBFF; color: var(--c-muted);
      text-align: center;
    }
    .empty-state {
      min-height: 220px; padding: 32px; border: 1px dashed #BFD2E8;
      border-radius: 16px; background: #F8FBFF; display: flex; flex-direction: column;
      align-items: center; justify-content: center; gap: 12px; text-align: center;
    }
    .empty-icon {
      width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center;
      background: var(--c-primary-soft); color: var(--c-primary);
    }
    .empty-icon svg { width: 24px; height: 24px; }
    .empty-state p { color: var(--c-muted); font-size: 15px; }

    .faq-layout {
      display: grid; grid-template-columns: 330px minmax(0, 1fr);
      gap: 72px; align-items: start;
    }
    .faq-intro { position: sticky; top: 106px; }
    .faq-intro h2 { margin: 12px 0 16px; }
    .faq-intro p { color: var(--c-muted); font-size: 15px; }
    .faq-intro .btn { margin-top: 22px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-question {
      width: 100%; min-height: 64px; padding: 20px 0; border: 0; background: none;
      display: flex; align-items: center; justify-content: space-between; gap: 20px;
      color: var(--c-ink); font-size: 17px; font-weight: 700; line-height: 1.5;
      text-align: left; transition: color .18s ease;
    }
    .faq-question:hover { color: var(--c-primary); }
    .faq-icon {
      position: relative; flex: none; width: 30px; height: 30px; border-radius: 50%;
      background: var(--c-primary-soft);
      transition: transform .18s ease, background .18s ease;
    }
    .faq-icon::before, .faq-icon::after {
      content: ""; position: absolute; left: 50%; top: 50%; border-radius: var(--radius-pill);
      background: var(--c-primary); transform: translate(-50%, -50%);
    }
    .faq-icon::before { width: 12px; height: 2px; }
    .faq-icon::after { width: 2px; height: 12px; transition: opacity .18s ease; }
    .faq-item.is-open .faq-icon { transform: rotate(180deg); background: var(--c-accent-soft); }
    .faq-item.is-open .faq-icon::before { background: var(--c-accent); }
    .faq-item.is-open .faq-icon::after { opacity: 0; }
    .faq-item.is-open .faq-question { color: var(--c-primary); }
    .faq-panel { max-height: 0; overflow: hidden; transition: max-height .24s ease; }
    .faq-item.is-open .faq-panel { max-height: 340px; }
    .faq-answer { padding: 0 44px 22px 0; color: var(--c-muted); font-size: 15px; line-height: 1.8; }

    .contact-band {
      padding: var(--space-section) 0; background: var(--bg-page);
      border-block: 1px solid var(--line);
    }
    .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
    .contact-copy h2 { margin: 12px 0 16px; }
    .contact-copy > p { max-width: 520px; color: var(--c-muted); font-size: 15px; }
    .contact-list { display: grid; gap: 14px; margin: 28px 0 0; padding: 0; list-style: none; }
    .contact-list li {
      display: grid; grid-template-columns: 72px 1fr; gap: 16px; align-items: baseline;
      padding: 14px 0; border-bottom: 1px solid var(--border);
    }
    .contact-list span { color: var(--c-faint); font-size: 13px; font-weight: 700; }
    .contact-list a, .contact-list p { color: var(--c-text); font-size: 15px; }
    .contact-list a:hover { color: var(--c-primary); text-decoration: underline; }
    .contact-card { padding: 32px; }
    .contact-card:hover { transform: none; box-shadow: var(--shadow-md); }
    .contact-card h3 { margin-bottom: 18px; font-size: 20px; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .field { display: flex; flex-direction: column; gap: 8px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: var(--c-ink); font-size: 14px; font-weight: 600; }
    .field input, .field select, .field textarea {
      width: 100%; min-height: 48px; padding: 0 14px; border: 1px solid #D8E3EF;
      border-radius: 10px; background: #fff; color: var(--c-text);
      transition: border-color .18s ease, box-shadow .18s ease;
    }
    .field textarea { min-height: 120px; padding: 12px 14px; line-height: 1.7; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus {
      outline: none; border-color: var(--c-primary);
      box-shadow: 0 0 0 3px rgba(42, 111, 212, .12);
    }
    .form-actions {
      grid-column: 1 / -1; display: flex; justify-content: flex-end; margin-top: 4px;
    }
    .form-status {
      display: none; margin-top: 14px; padding: 12px 14px; border-radius: 10px;
      background: var(--c-teal-soft); color: #167B6E; font-size: 14px; line-height: 1.6;
    }
    .form-status.is-visible { display: block; }

    .site-footer { padding: 72px 0 0; background: var(--c-ink); color: #C7D5E4; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .9fr 1fr; gap: 40px; }
    .footer-brand .brand-text strong { color: #fff; }
    .footer-brand .brand-text small { color: #9FB3C8; }
    .footer-brand .brand-mark { background: linear-gradient(135deg, #3C84EA, #2A6FD4); }
    .footer-desc { max-width: 320px; margin-top: 18px; color: #C7D5E4; font-size: 14px; line-height: 1.8; }
    .footer-col h4 { margin-bottom: 16px; color: rgba(255, 255, 255, .62); font-size: 14px; font-weight: 600; }
    .footer-col a, .footer-col p {
      display: block; margin-bottom: 10px; color: #C7D5E4; font-size: 14px;
      line-height: 1.7; word-break: break-all;
    }
    .footer-col a:hover { color: #fff; text-decoration: underline; }
    .footer-bottom {
      margin-top: 48px; padding: 20px 0; border-top: 1px solid rgba(255, 255, 255, .12);
      display: flex; align-items: center; justify-content: space-between;
      gap: 16px; color: #94A9BE; font-size: 13px;
    }
    .footer-bottom a { color: #C7D5E4; }
    .footer-bottom a:hover { color: #fff; }

    @media (max-width: 1100px) {
      .hero-inner { gap: 36px; }
      .hero-float { right: 0; }
    }

    @media (max-width: 992px) {
      .site-header { height: 60px; }
      .site-header.is-scrolled { height: 56px; }
      .nav-wrap { gap: 16px; }
      .main-nav, .nav-actions .icon-btn, .nav-actions .btn-nav, .search-pop { display: none; }
      .menu-toggle { display: inline-flex; }
      .section, .contact-band { padding: 80px 0; }
      .hero { min-height: auto; }
      .hero-bg {
        background-image:
          linear-gradient(180deg, rgba(255, 255, 255, .97) 0%, rgba(255, 255, 255, .9) 55%, rgba(255, 255, 255, .58) 100%),
          url('/assets/images/backpic/back-1.png');
      }
      .hero-inner {
        grid-template-columns: 1fr; gap: 38px;
        padding-top: 118px; padding-bottom: 64px;
      }
      .hero-copy { max-width: 720px; }
      .hero-visual { width: 100%; max-width: 640px; }
      .hero-float { right: 16px; bottom: 20px; }
      .service-grid { grid-template-columns: 1fr; }
      .service-small-stack { grid-template-columns: 1fr 1fr; }
      .stats-grid { grid-template-columns: 1fr 1fr; row-gap: 24px; }
      .stat-item { padding: 6px 24px; }
      .stat-item:nth-child(3) { border-left: 0; padding-left: 0; }
      .story-row, .story-row.reverse { grid-template-columns: 1fr; gap: 28px; }
      .story-row.reverse .story-media { order: 0; }
      .story-copy { max-width: none; }
      .step-list { grid-template-columns: 1fr; }
      .step-item::after { display: none; }
      .news-grid { grid-template-columns: 1fr 1fr; }
      .faq-layout { grid-template-columns: 1fr; gap: 32px; }
      .faq-intro { position: static; }
      .contact-grid { grid-template-columns: 1fr; gap: 36px; }
      .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
      .footer-brand { grid-column: 1 / -1; }
    }

    @media (max-width: 768px) {
      .container { padding: 0 20px; }
      .section, .contact-band { padding: 56px 0; }
      .section-head { flex-direction: column; align-items: flex-start; gap: 24px; margin-bottom: 32px; }
      .section-head-right { max-width: none; }
      .hero-inner { padding-top: 104px; padding-bottom: 52px; }
      .hero-lead { font-size: 16px; }
      .hero-float {
        position: relative; right: auto; bottom: auto;
        width: calc(100% - 32px); margin: -34px 16px 0;
      }
      .news-grid { grid-template-columns: 1fr; }
      .service-small-stack { grid-template-columns: 1fr; }
      .stats-band { padding: 36px 0; }
      .steps-panel { padding: 24px; }
      .contact-card { padding: 24px; }
      .form-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-brand { grid-column: 1 / -1; }
    }

    @media (max-width: 560px) {
      .hero h1 { font-size: clamp(28px, 8vw, 36px); }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .hero-actions .btn { width: 100%; }
      .hero-points { flex-direction: column; gap: 10px; }
      .stats-grid { grid-template-columns: 1fr; row-gap: 0; }
      .stat-item, .stat-item:first-child, .stat-item:nth-child(3) {
        padding: 18px 0; border-left: 0; border-top: 1px solid #DCE7F4;
      }
      .stat-item:first-child { border-top: 0; padding-top: 0; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; align-items: flex-start; }
      .contact-list li { grid-template-columns: 64px 1fr; }
      .faq-question { font-size: 16px; }
      .news-body { padding: 18px; }
      .brand-text strong { font-size: 16px; }
      .brand-mark { width: 34px; height: 34px; border-radius: 10px; font-size: 17px; }
    }

    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
      }
    }

/* roulang page: article */
:root{
  --c-primary:#2A6FD4;
  --c-primary-dark:#1F5CB4;
  --c-primary-light:#EAF1FC;
  --c-accent:#F07B34;
  --c-accent-light:#FDEEDF;
  --c-teal:#2FB3A0;
  --c-teal-light:#E4F6F3;
  --c-ink:#10365C;
  --text:#1C2B3A;
  --text-2:#5A6E82;
  --text-3:#8A9AAC;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --border:#E4ECF6;
  --line:#EDF2F8;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(16,54,92,.06);
  --shadow-md:0 8px 24px rgba(16,54,92,.08);
  --shadow-lg:0 18px 40px rgba(16,54,92,.12);
  --container:1200px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{text-decoration:underline;}
button{font:inherit;color:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--text);}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(16,54,92,.08);
  box-shadow:0 8px 24px rgba(16,54,92,.06);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(255,255,255,.94);
  box-shadow:0 10px 28px rgba(16,54,92,.12);
}
.header-inner{display:flex;align-items:center;gap:24px;height:100%;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),#4A8BE8);
  color:#fff;font-size:18px;font-weight:700;letter-spacing:0;
  box-shadow:0 6px 14px rgba(42,111,212,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;}
.brand-text small{font-size:11px;color:var(--text-3);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--text-2);
  white-space:nowrap;transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--c-primary);background:rgba(42,111,212,.07);text-decoration:none;}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;border-radius:9px;border:1px solid transparent;
  background:rgba(42,111,212,.08);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .18s ease,transform .18s ease;
}
.icon-btn:hover{background:rgba(42,111,212,.16);transform:translateY(-1px);}
.icon-btn svg{width:18px;height:18px;}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:9px;
  border:1px solid var(--border);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease;}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px rgba(42,111,212,.22);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 12px 22px rgba(31,92,180,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:rgba(42,111,212,.08);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 18px rgba(240,123,52,.24);}
.btn-accent:hover{background:#D96A28;transform:translateY(-1px);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.text-link::after{content:"→";font-size:14px;transition:transform .18s ease;}
.text-link:hover{text-decoration:none;color:var(--c-primary-dark);}
.text-link:hover::after{transform:translateX(2px);}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:110;background:rgba(16,54,92,.38);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:120;width:min(320px,86vw);
  background:#fff;box-shadow:-16px 0 40px rgba(16,54,92,.18);
  transform:translateX(100%);transition:transform .2s ease;
  display:flex;flex-direction:column;padding:20px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--c-ink);}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--border);background:#fff;font-size:18px;line-height:1;color:var(--text-2);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;}
.drawer-nav a{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text);border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--c-primary-light);color:var(--c-primary);text-decoration:none;}
.drawer-nav a.active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;border-color:rgba(42,111,212,.18);}
.drawer-foot{border-top:1px solid var(--line);padding-top:16px;margin-top:12px;}
.drawer-foot p{font-size:13px;color:var(--text-3);margin-bottom:12px;}
.drawer-foot .btn{width:100%;}

/* ---------- 文章头部 ---------- */
.main-wrap{padding-top:112px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:none;}
.breadcrumb .sep{color:#C3D2E2;}
.breadcrumb .crumb-title{
  color:var(--text-3);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-head{padding-bottom:28px;}
.article-head h1{
  font-size:clamp(27px,3.6vw,42px);line-height:1.3;font-weight:700;
  max-width:880px;margin-bottom:20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:var(--text-3);padding-bottom:22px;border-bottom:1px solid var(--line);
}
.meta-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-light);color:var(--c-primary-dark);font-size:12px;font-weight:600;
}
.meta-badge.accent{background:var(--c-accent-light);color:#B75B1C;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C3D2E2;}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;
  align-items:start;padding-bottom:24px;
}
.article-body{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:40px 44px;
  font-size:17px;line-height:1.95;color:#25384A;
  max-width:100%;
}
.article-body > *:first-child{margin-top:0;}
.article-body > *:last-child{margin-bottom:0;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;font-size:22px;line-height:1.5;font-weight:700;color:var(--ink,#10365C);
  margin:38px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--c-primary);
}
.article-body h3{font-size:18px;line-height:1.6;font-weight:600;color:var(--c-ink);margin:28px 0 12px;}
.article-body h4{font-size:16px;font-weight:600;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
.article-body ul li{list-style:disc;margin-bottom:8px;}
.article-body ol li{list-style:decimal;margin-bottom:8px;}
.article-body li::marker{color:var(--c-primary);}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-accent);
  background:#FBFCFE;border-radius:0 10px 10px 0;color:var(--text-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  margin:24px 0;font-size:15px;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left;}
.article-body th{background:var(--c-primary-light);color:var(--c-ink);font-weight:600;}
.article-body pre{
  background:#F4F7FB;border:1px solid var(--border);border-radius:10px;
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:20px 0;
}
.article-body code{background:#F1F5FA;padding:2px 6px;border-radius:5px;font-size:.92em;}
.article-body a{border-bottom:1px solid rgba(42,111,212,.32);}
.article-body a:hover{border-bottom-color:var(--c-primary);text-decoration:none;}

/* ---------- 标签 / 分享 ---------- */
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  background:#F1F5FA;color:var(--text-2);font-size:12.5px;font-weight:500;
  border:1px solid var(--border);transition:all .18s ease;
}
.tag:hover{background:var(--c-primary-light);color:var(--c-primary-dark);border-color:rgba(42,111,212,.24);text-decoration:none;}
.share-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.share-btn{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--border);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:all .18s ease;
}
.share-btn:hover{color:var(--c-primary);border-color:rgba(42,111,212,.3);background:var(--c-primary-light);transform:translateY(-1px);}
.share-btn svg{width:16px;height:16px;}

/* ---------- 相关推荐 ---------- */
.related-block{margin-top:48px;}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.block-head h2{font-size:22px;font-weight:700;color:var(--c-ink);}
.block-head p{font-size:14px;color:var(--text-2);margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D6E3F3;text-decoration:none;}
.related-thumb{aspect-ratio:16/9;overflow:hidden;background:#E8EFF8;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.related-body .tag{background:var(--c-primary-light);color:var(--c-primary-dark);border-color:transparent;align-self:flex-start;}
.related-body h3{
  font-size:16px;line-height:1.55;font-weight:600;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card:hover h3{color:var(--c-primary);}
.related-body p{
  font-size:13.5px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-date{font-size:12.5px;color:var(--text-3);margin-top:auto;}

/* ---------- 上下篇 / 返回 ---------- */
.article-nav{
  margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:20px 24px;box-shadow:var(--shadow-sm);
}
.article-nav .nav-prev-next{display:flex;flex-wrap:wrap;gap:22px;font-size:14px;color:var(--text-2);}
.article-nav .nav-prev-next a{color:var(--text-2);font-weight:500;}
.article-nav .nav-prev-next a:hover{color:var(--c-primary);text-decoration:none;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:22px;
}
.aside-card h3{font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:10px;}
.aside-card p{font-size:13.5px;line-height:1.8;color:var(--text-2);margin-bottom:16px;}
.aside-card .btn{width:100%;}
.aside-list{display:flex;flex-direction:column;gap:2px;}
.aside-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:9px;font-size:14px;color:var(--text-2);
  transition:background .18s ease,color .18s ease;
}
.aside-list a:hover{background:var(--c-primary-light);color:var(--c-primary-dark);text-decoration:none;}
.aside-list a span{color:var(--text-3);font-size:12px;}
.aside-tip{
  background:linear-gradient(160deg,#F3F8FF,#EAF1FC);
  border:1px dashed rgba(42,111,212,.3);border-radius:var(--radius-lg);padding:20px;
}
.aside-tip h3{font-size:14px;color:var(--c-primary-dark);margin-bottom:8px;}
.aside-tip p{font-size:13px;color:var(--text-2);margin:0;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed #C9D9EC;background:#F8FBFF;border-radius:var(--radius-lg);
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:32px 20px;
}
.empty-state svg{width:46px;height:46px;color:#A9C3E0;}
.empty-state p{font-size:15px;color:var(--text-2);margin:0;}

/* ---------- 底部 CTA ---------- */
.cta-band{margin:64px 0 0;padding:52px 0;}
.cta-inner{
  background:linear-gradient(120deg,#F2F7FE 0%,#EAF1FC 60%,#E7F1FF 100%);
  border:1px solid #DCE8F7;border-radius:20px;padding:40px 44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-copy{max-width:620px;}
.cta-copy h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--c-ink);margin-bottom:10px;}
.cta-copy p{font-size:15px;color:var(--text-2);line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#C7D5E4;padding:56px 0 26px;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;
  padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text small{color:rgba(255,255,255,.55);}
.footer-desc{font-size:14px;line-height:1.85;color:#A9BED2;max-width:320px;}
.footer-col h4{
  font-size:14px;font-weight:600;color:rgba(255,255,255,.78);
  margin-bottom:14px;letter-spacing:.02em;
}
.footer-col a,.footer-col p{
  display:block;font-size:14px;color:#C7D5E4;margin-bottom:10px;line-height:1.7;
}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:22px;font-size:13px;color:#93A9BF;
}
.footer-bottom a{color:#C7D5E4;}
.footer-bottom a:hover{color:#fff;text-decoration:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;}
}
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-aside{position:static;margin-top:36px;}
  .article-body{max-width:100%;}
}
@media (max-width:992px){
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .main-wrap{padding-top:100px;}
  .article-body{padding:32px 28px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .main-wrap{padding-top:92px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .cta-inner{padding:30px 24px;border-radius:16px;}
  .article-nav{flex-direction:column;align-items:flex-start;}
  .article-meta{gap:10px;font-size:12.5px;}
  .article-body{font-size:16px;line-height:1.92;padding:26px 22px;}
  .article-body h2{font-size:20px;}
  .block-head{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:560px){
  .brand-text strong{font-size:14.5px;}
  .brand-text small{font-size:10.5px;}
  .brand-mark{width:34px;height:34px;font-size:16px;}
  .article-head h1{font-size:25px;}
  .btn{width:100%;}
  .cta-actions{width:100%;flex-direction:column;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --c-primary:#2A6FD4;
  --c-primary-dark:#1F5CB4;
  --c-primary-soft:#EAF1FC;
  --c-accent:#F07B34;
  --c-accent-soft:#FDEEE4;
  --c-teal:#2FB3A0;
  --c-teal-soft:#E4F6F3;
  --c-ink:#10365C;
  --text:#1C2B3A;
  --text-2:#5A6E82;
  --text-3:#8A9AAC;
  --bg-page:#F5F8FC;
  --card:#FFFFFF;
  --border:#E4ECF6;
  --line:#EDF2F8;
  --r-lg:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,54,92,.06);
  --sh-md:0 8px 24px rgba(16,54,92,.08);
  --sh-lg:0 18px 40px rgba(16,54,92,.12);
  --ease:180ms ease;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg-page);
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease)}
a:hover{text-decoration:underline}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.01em;font-weight:700}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.35}
h3{font-size:20px;line-height:1.5;font-weight:600}
h4{font-size:17px;line-height:1.6;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:72px;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(16,54,92,.08);
  box-shadow:0 8px 24px rgba(16,54,92,.06);
  transition:height .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(255,255,255,.92);
  box-shadow:0 10px 28px rgba(16,54,92,.12);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 36px;
  display:grid;place-items:center;
  background:var(--c-primary);color:#fff;font-size:18px;font-weight:700;
  box-shadow:0 6px 16px rgba(42,111,212,.28);
}
.brand-text strong{display:block;font-size:16px;line-height:1.2;color:var(--c-ink)}
.brand-text small{display:block;font-size:11px;line-height:1.4;color:var(--text-3);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:28px;white-space:nowrap}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--text)}
.nav-link:hover{color:var(--c-primary);text-decoration:none}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-5px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  color:var(--c-ink);background:rgba(255,255,255,.7);
  border:1px solid rgba(16,54,92,.08);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.icon-btn:hover{background:#fff;color:var(--c-primary);border-color:rgba(42,111,212,.3)}
.icon-btn svg{width:18px;height:18px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(42,111,212,.24)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(42,111,212,.2)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:rgba(42,111,212,.08);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid rgba(16,54,92,.1);background:rgba(255,255,255,.75);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.header-search{
  position:fixed;top:72px;left:0;right:0;z-index:115;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--border);
  box-shadow:0 12px 28px rgba(16,54,92,.08);
  padding:16px 0;
  display:none;
}
.header-search.is-open{display:block}
.search-inner{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.search-inner input{
  flex:1 1 280px;height:48px;padding:0 16px;border-radius:var(--r-sm);
  border:1px solid #D8E3EF;background:#fff;color:var(--text);font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-inner input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(42,111,212,.12)}
.search-hint{font-size:13px;color:var(--text-3);padding:6px 0 0}

/* ---------- 移动抽屉 ---------- */
.nav-mask{
  position:fixed;inset:0;z-index:130;background:rgba(16,54,92,.42);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:140;
  width:min(320px,86vw);background:#fff;
  box-shadow:-12px 0 40px rgba(16,54,92,.18);
  transform:translateX(100%);transition:transform .2s ease;
  display:flex;flex-direction:column;
  padding:20px 20px 24px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  display:grid;place-items:center;color:var(--c-ink);font-size:20px;background:#fff;
}
.drawer-nav{display:flex;flex-direction:column;padding:8px 0;flex:1}
.drawer-nav a{
  min-height:48px;display:flex;align-items:center;
  padding:0 4px;font-size:16px;font-weight:500;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-nav a:hover{color:var(--c-primary);text-decoration:none}
.drawer-nav a.active{color:var(--c-primary);font-weight:600}
.drawer-foot{padding-top:16px;display:flex;flex-direction:column;gap:12px}
.drawer-foot .btn{width:100%}
.drawer-foot p{font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- 首屏 ---------- */
.page-hero{position:relative;overflow:hidden;padding:148px 0 80px;background:var(--bg-page)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.98) 0%,rgba(255,255,255,.94) 46%,rgba(245,248,252,.55) 100%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs span{color:#C3D0DE}
.crumbs em{font-style:normal;color:var(--c-primary);font-weight:600}
.hero-copy h1{margin-bottom:16px}
.hero-sub{font-size:18px;line-height:1.7;color:var(--text-2);max-width:32em;margin-bottom:22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 16px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;
  background:#fff;color:var(--c-primary);
  border:1px solid rgba(42,111,212,.28);
}
.chip-accent{background:var(--c-accent-soft);color:#C25A18;border-color:rgba(240,123,52,.32)}
.chip-teal{background:var(--c-teal-soft);color:#1B8578;border-color:rgba(47,179,160,.32)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:14px;color:var(--text-2)}
.hero-points li{position:relative;padding-left:18px}
.hero-points li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--c-teal);
}
.hero-visual{position:relative}
.hero-figure{
  position:relative;margin:0;overflow:hidden;
  border-radius:20px;background:#fff;
  box-shadow:var(--sh-lg);
  aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;left:-16px;bottom:-22px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-md);padding:16px 20px;max-width:230px;
}
.hero-badge strong{display:block;font-size:20px;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.3}
.hero-badge span{display:block;font-size:13px;color:var(--text-2);line-height:1.6;margin-top:2px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:#fff}
.section-tight{padding:72px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:40px;flex-wrap:wrap;
}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--c-primary);margin-bottom:12px;
}
.eyebrow::before{
  content:"";display:inline-block;width:28px;height:3px;border-radius:2px;
  background:var(--c-primary);vertical-align:middle;margin-right:10px;
}
.section-head h2{margin-bottom:0}
.section-lead{max-width:420px;color:var(--text-2);font-size:15px;line-height:1.8}
.section-lead a{font-weight:600;white-space:nowrap}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:#CFE0F5}
.step-no{
  display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;gap:24px}
.card-grid.three{grid-template-columns:repeat(3,1fr)}
.info-card{
  position:relative;overflow:hidden;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px 24px;box-shadow:var(--sh-md);
  transition:transform var(--ease),box-shadow var(--ease);
}
.info-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);
}
.info-card.accent::before{background:var(--c-accent)}
.info-card.teal::before{background:var(--c-teal)}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg)}
.info-card h3{font-size:18px;margin-bottom:10px}
.info-card p{font-size:14.5px;color:var(--text-2);line-height:1.85}
.info-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.info-card ul li{
  position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.75;
}
.info-card ul li::before{
  content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;border-radius:2px;
  background:var(--c-primary-soft);border:2px solid var(--c-primary);
}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.badge-accent{background:var(--c-accent-soft);color:#C25A18}
.badge-teal{background:var(--c-teal-soft);color:#1B8578}

/* ---------- 图文交替 ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:36px 0;
}
.split + .split{border-top:1px solid var(--line)}
.split.reverse .split-media{order:2}
.split-media{margin:0;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);aspect-ratio:4/3;background:#E9F0F8}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.split-media:hover img{transform:scale(1.03)}
.split-body h3{font-size:24px;margin:14px 0 14px}
.split-body p{color:var(--text-2);font-size:15.5px;line-height:1.9}
.split-body p + p{margin-top:12px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:20px;
  font-size:14.5px;font-weight:600;color:var(--c-primary);
}
.text-link::after{content:"→";display:inline-block;transition:transform var(--ease)}
.text-link:hover{text-decoration:none;color:var(--c-primary-dark)}
.text-link:hover::after{transform:translateX(3px)}

/* ---------- 数据条 ---------- */
.stat-bar{background:#F5F8FC;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:56px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:0 28px;border-left:1px solid #DCE7F3}
.stat:first-child{border-left:0;padding-left:0}
.stat strong{
  display:block;font-size:44px;line-height:1.1;font-weight:700;
  color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.7}
.stat.big strong{color:var(--c-accent)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside h2{margin-bottom:16px}
.faq-aside p{font-size:15px;color:var(--text-2);line-height:1.85}
.faq-aside .btn{margin-top:24px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 4px;text-align:left;font-size:16.5px;font-weight:600;color:var(--c-ink);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--c-primary)}
.faq-item.open .faq-q{color:var(--c-primary)}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  transition:transform .24s ease,opacity .24s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 4px 22px;font-size:15px;color:var(--text-2);line-height:1.9;max-width:60em}

/* ---------- 联系 / CTA ---------- */
.cta-section{background:#fff;border-top:1px solid var(--line)}
.cta-grid{display:grid;grid-template-columns:1fr 460px;gap:56px;align-items:start}
.cta-copy h2{margin-bottom:16px}
.cta-copy > p{color:var(--text-2);font-size:15.5px;line-height:1.9;max-width:34em}
.contact-list{margin-top:28px;display:flex;flex-direction:column;gap:16px}
.contact-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:16px 18px;background:var(--bg-page);border:1px solid var(--border);border-radius:var(--r-sm);
}
.contact-list strong{display:block;font-size:14px;color:var(--c-ink);font-weight:600}
.contact-list span{display:block;font-size:14px;color:var(--text-2);line-height:1.7}
.dot{
  flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--c-accent);margin-top:.7em;
}
.contact-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-md);padding:28px;
}
.contact-card h3{font-size:19px;margin-bottom:6px}
.contact-card .form-sub{font-size:13.5px;color:var(--text-3);margin-bottom:20px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid #D8E3EF;border-radius:var(--r-sm);
  background:#fff;color:var(--text);font-family:var(--font);font-size:15px;
  padding:0 14px;height:48px;line-height:46px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(42,111,212,.12);
}
.form-foot{display:flex;align-items:center;justify-content:flex-end;gap:14px;flex-wrap:wrap}
.form-note{font-size:13px;color:var(--text-3);margin-right:auto}
.form-alert{
  display:none;margin-bottom:16px;padding:12px 14px;border-radius:var(--r-sm);
  font-size:14px;line-height:1.7;
}
.form-alert.show{display:block}
.form-alert.ok{background:var(--c-teal-soft);color:#1B8578;border:1px solid rgba(47,179,160,.35)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#C7D5E4;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#8FA9C2}
.footer-desc{font-size:14px;line-height:1.85;color:#C7D5E4;max-width:26em}
.footer-col h4{font-size:14px;color:rgba(255,255,255,.62);margin-bottom:16px;letter-spacing:.06em;font-weight:600}
.footer-col a,.footer-col p{display:block;font-size:14px;line-height:2;color:#C7D5E4}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:#9FB6CC;
}
.footer-bottom a{color:#9FB6CC}
.footer-bottom a:hover{color:#fff;text-decoration:none}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .hero-grid{gap:40px}
  .faq-layout{grid-template-columns:280px 1fr;gap:40px}
  .cta-grid{grid-template-columns:1fr 420px;gap:40px}
  .split{gap:40px}
}
@media (max-width:991px){
  .main-nav,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .site-header{height:60px}
  .site-header.is-scrolled{height:60px}
  .header-search{top:60px}
  .page-hero{padding:112px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-copy{max-width:640px}
  .hero-visual{max-width:600px}
  .hero-badge{left:auto;right:12px;bottom:-18px}
  .section{padding:72px 0}
  .section-tight{padding:60px 0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .card-grid.three{grid-template-columns:1fr 1fr}
  .card-grid.three .info-card:last-child{grid-column:1 / -1}
  .split{grid-template-columns:1fr;gap:28px;padding:28px 0}
  .split.reverse .split-media{order:0}
  .stat-grid{grid-template-columns:1fr 1fr;row-gap:32px}
  .stat{padding:0 20px}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .section-lead{max-width:none}
  .hero-sub{font-size:16.5px}
  .page-hero{padding:104px 0 56px}
  .steps{grid-template-columns:1fr}
  .card-grid.three{grid-template-columns:1fr}
  .card-grid.three .info-card:last-child{grid-column:auto}
  .split-body h3{font-size:21px}
  .stat strong{font-size:36px}
  .contact-card{padding:22px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  h1{font-size:28px}
  .hero-tags{gap:8px}
  .chip{font-size:12px;padding:6px 12px}
  .btn-row{flex-direction:column;align-items:stretch}
  .btn-row .btn{width:100%}
  .hero-points{flex-direction:column;gap:8px}
  .hero-figure{aspect-ratio:4/3}
  .hero-badge{position:static;margin-top:16px;max-width:none}
  .stat-grid{grid-template-columns:1fr;row-gap:24px}
  .stat{border-left:0;padding:0 0 0 16px;border-left:3px solid #DCE7F3}
  .form-foot{flex-direction:column;align-items:stretch}
  .form-foot .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --c-primary:#2A6FD4;
  --c-primary-dark:#1F5CB4;
  --c-primary-soft:#EAF1FC;
  --c-accent:#F07B34;
  --c-accent-soft:#FDEEE4;
  --c-teal:#2FB3A0;
  --c-teal-soft:#E6F7F4;
  --c-ink:#10365C;
  --c-text:#1C2B3A;
  --c-text-2:#5A6E82;
  --c-text-3:#8A9AAC;
  --bg-page:#F5F8FC;
  --bg-card:#FFFFFF;
  --border:#E4ECF6;
  --line:#EDF2F8;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(16,54,92,.06);
  --shadow-md:0 8px 24px rgba(16,54,92,.08);
  --shadow-lg:0 18px 40px rgba(16,54,92,.12);
  --container:1200px;
  --ease:180ms ease;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--bg-page);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease)}
a:hover{text-decoration:underline}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--c-ink);font-weight:700}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:rgba(42,111,212,.08);color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.badge-accent{background:var(--c-accent-soft);color:#C75E1E}
.badge-teal{background:var(--c-teal-soft);color:#1F8C7D}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:72px;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(16,54,92,.08);
  box-shadow:0 8px 24px rgba(16,54,92,.06);
  transition:height .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(255,255,255,.92);
  box-shadow:0 10px 28px rgba(16,54,92,.12);
}
.header-inner{display:flex;align-items:center;gap:20px;height:100%}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink)}
.brand:hover{text-decoration:none}
.brand-mark{
  width:36px;height:36px;flex:none;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#4A8BE8);
  color:#fff;font-size:17px;font-weight:700;letter-spacing:0;
  box-shadow:0 4px 12px rgba(42,111,212,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-text small{font-size:11px;color:var(--c-text-3);font-weight:500;letter-spacing:.04em}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--c-text);
  transition:color var(--ease),background var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:rgba(42,111,212,.07);text-decoration:none}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:12px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--border);background:#fff;color:var(--c-text-2);
  display:grid;place-items:center;transition:all var(--ease);
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary);box-shadow:var(--shadow-sm)}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--border);background:#fff;color:var(--c-ink);
  place-items:center;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:190;
  background:rgba(16,54,92,.45);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:200;
  width:min(320px,86vw);background:#fff;
  transform:translateX(100%);transition:transform .2s ease;
  display:flex;flex-direction:column;
  padding:20px;overflow-y:auto;
  box-shadow:-12px 0 32px rgba(16,54,92,.16);
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;font-weight:700;color:var(--c-ink)}
.drawer-close{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;color:var(--c-text-2);border:1px solid var(--border)}
.drawer-close:hover{color:var(--c-primary);border-color:var(--c-primary)}
.drawer-nav{display:flex;flex-direction:column;padding:8px 0}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 4px;
  font-size:16px;color:var(--c-text);border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:var(--c-primary);text-decoration:none}
.drawer-link.active{color:var(--c-primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
.drawer-foot p{font-size:13px;color:var(--c-text-3);margin:12px 0 0}

/* ---------- 介绍带 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(72px + 56px) 0 68px;
  background:linear-gradient(180deg,#EAF1FC 0%,#F5F8FC 100%);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.10;pointer-events:none;
}
.page-hero > .container{position:relative;z-index:1}
.crumb{
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:6px;
  font-size:13px;color:var(--c-text-3);margin-bottom:22px;
}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb span.sep{color:#C3D2E2}
.page-hero-inner{max-width:840px;margin:0 auto;text-align:center}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.28;
  margin:0 0 18px;
}
.hero-lead{
  font-size:16px;line-height:1.9;color:var(--c-text-2);
  max-width:720px;margin:0 auto 26px;
}
.tag-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:7px 15px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--border);
  font-size:13px;color:var(--c-text-2);
  box-shadow:var(--shadow-sm);
  transition:all var(--ease);
}
.tag-pill:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(23px,2.6vw,32px);line-height:1.35;margin-bottom:14px}
.section-head p{color:var(--c-text-2);font-size:15.5px;margin:0}
.rule{width:40px;height:4px;border-radius:2px;background:var(--c-primary);margin:0 0 18px}
.section-head.center .rule{margin-left:auto;margin-right:auto}

/* ---------- 图文交替块 ---------- */
.alt-list{display:flex;flex-direction:column;gap:56px}
.alt-block{
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:48px;align-items:center;
}
.alt-block.reverse .alt-media{order:-1}
.alt-media{
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-md);background:var(--c-primary-soft);
  aspect-ratio:16/10;
}
.alt-media img{width:100%;height:100%;object-fit:cover}
.alt-body{padding:4px 0}
.alt-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-size:16px;font-weight:700;letter-spacing:.02em;
  margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.alt-block:nth-child(even) .alt-index{background:var(--c-accent-soft);color:#C75E1E}
.alt-body h2{font-size:22px;line-height:1.45;margin-bottom:14px}
.alt-body p{color:var(--c-text-2);font-size:15.5px;line-height:1.9;margin:0 0 12px}
.alt-body p:last-of-type{margin-bottom:18px}
.check-list{display:flex;flex-direction:column;gap:10px;margin-bottom:4px}
.check-list li{
  position:relative;padding-left:24px;
  font-size:14.5px;color:var(--c-text-2);line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:50%;
  background:var(--c-primary);opacity:.55;
}

/* ---------- 三卡网格 ---------- */
.tint-band{background:var(--c-primary-soft)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  position:relative;overflow:hidden;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:26px 24px;
  box-shadow:var(--shadow-md);height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.info-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--c-primary);
}
.info-card.is-accent::before{background:var(--c-accent)}
.info-card.is-teal::before{background:var(--c-teal)}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D5E3F5}
.info-card h3{font-size:18px;line-height:1.5;margin:14px 0 10px}
.info-card p{font-size:14.5px;line-height:1.85;color:var(--c-text-2);margin:0 0 18px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
  transition:gap var(--ease),color var(--ease);
}
.text-link:hover{gap:10px;color:var(--c-primary-dark);text-decoration:none}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.78fr 1.22fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(23px,2.4vw,30px);line-height:1.4;margin-bottom:14px}
.faq-aside p{color:var(--c-text-2);font-size:15px;line-height:1.85;margin-bottom:22px}
.faq-aside .badge{margin-bottom:14px}
.faq-list{border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:16px 4px;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color var(--ease);
}
.faq-question:hover{color:var(--c-primary)}
.faq-item.open .faq-question{color:var(--c-primary)}
.faq-sign{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--border);background:#fff;
  display:grid;place-items:center;position:relative;
  transition:background var(--ease),border-color var(--ease),transform .24s ease;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:1px;
  transition:transform .24s ease,opacity .24s ease;
}
.faq-sign::before{width:11px;height:2px}
.faq-sign::after{width:2px;height:11px}
.faq-item.open .faq-sign{background:var(--c-primary-soft);border-color:#CFE0F8}
.faq-item.open .faq-sign::after{transform:scaleY(0);opacity:0}
.faq-answer{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease;
}
.faq-answer-inner{
  padding:0 44px 22px 4px;
  font-size:15px;line-height:1.9;color:var(--c-text-2);
}
.faq-answer-inner p:last-child{margin-bottom:0}

/* ---------- 通栏 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#EAF1FC 0%,#F7FAFF 100%);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:64px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  flex-wrap:wrap;
}
.cta-text{max-width:640px}
.cta-text h2{font-size:clamp(22px,2.4vw,30px);line-height:1.4;margin-bottom:12px}
.cta-text p{color:var(--c-text-2);font-size:15.5px;margin:0}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#C7D5E4;padding:64px 0 0;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;padding-bottom:48px;
}
.site-footer .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.site-footer .brand-text strong{color:#fff;font-size:16px}
.site-footer .brand-text small{color:#8FA6BE}
.footer-desc{font-size:14px;line-height:1.85;color:#A9BDD2;margin:18px 0 0;max-width:320px}
.footer-col h4{
  font-size:14px;font-weight:600;color:rgba(255,255,255,.62);
  margin:0 0 16px;letter-spacing:.04em;
}
.footer-col a,.footer-col p{
  display:block;font-size:14px;color:#C7D5E4;line-height:1.8;
  margin:0 0 10px;
}
.footer-col a{transition:color var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA6BE;
}
.footer-bottom a{color:#A9BDD2}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .main-nav{margin-left:auto}
  .nav-link{padding:9px 10px;font-size:14px}
  .alt-block{gap:32px}
  .faq-wrap{gap:36px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
}
@media (max-width:992px){
  .main-nav{display:none}
  .header-actions .btn-sm{display:none}
  .nav-toggle{display:grid}
  .header-inner{gap:12px}
  .header-actions{margin-left:auto}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .alt-block{grid-template-columns:1fr;gap:24px}
  .alt-block.reverse .alt-media{order:0}
  .alt-list{gap:44px}
  .card-grid{grid-template-columns:1fr 1fr}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .site-header{height:60px}
  .page-hero{padding:calc(60px + 40px) 0 52px}
  .section{padding:56px 0}
  .card-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .faq-answer-inner{padding-right:8px}
}
@media (max-width:560px){
  .container{padding:0 20px}
  .brand-text small{display:none}
  .hero-lead{font-size:15px}
  .tag-pill{font-size:12px;padding:6px 12px}
  .alt-body h2{font-size:20px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .btn{height:46px;font-size:15px}
}