/* roulang page: index */
:root {
    --primary: #1D6FB8;
    --primary-deep: #124A7A;
    --accent: #1FA89B;
    --highlight: #F59E0B;
    --bg: #F8FAFC;
    --card-bg: #FFFFFF;
    --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    --text: #1E293B;
    --text-weak: #64748B;
    --border: #E5EAF0;
    --radius: 14px;
    --radius-sm: 10px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
    --shadow-hover: 0 16px 28px -12px rgba(15, 23, 42, 0.14);
  }
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: var(--font-main);
    color: var(--text);
    background: var(--bg);
    margin: 0;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; object-fit: cover; }
  a { text-decoration: none; color: inherit; transition: color .25s ease; }
  button, input, select { font-family: inherit; }
  :focus-visible { outline: 3px solid rgba(29, 111, 184, .45); outline-offset: 2px; border-radius: 6px; }
  .container-site {
    width: min(1280px, 100% - 40px);
    margin-inline: auto;
  }
  .section-gap { padding: 72px 0; }
  @media (min-width: 768px) {
    .section-gap { padding: 96px 0; }
    .cross-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
    .cross-grid.reverse > .cross-media { order: 2; }
  }
  .sec-head {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 44px;
  }
  .sec-title {
    font-size: clamp(28px, 3vw, 36px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
  }
  .sec-desc {
    font-size: 17px;
    color: var(--text-weak);
    max-width: 560px;
  }
  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(29, 111, 184, .07);
    border: 1px solid rgba(29, 111, 184, .15);
    padding: 6px 14px;
    border-radius: 999px;
    letter-spacing: .02em;
    margin-bottom: 16px;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    height: 50px;
    padding: 0 24px;
    font-size: 16px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .2s, box-shadow .25s, background .25s, border-color .25s;
    white-space: nowrap;
  }
  .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
  .btn:active { transform: translateY(0); }
  .btn-primary { background: var(--primary); color: #fff; }
  .btn-primary:hover { background: var(--primary-deep); }
  .btn-accent { background: var(--accent); color: #fff; }
  .btn-accent:hover { background: #178B80; }
  .btn-white { background: #fff; color: var(--primary-deep); border-color: #E0EAF0; }
  .btn-white:hover { border-color: var(--primary); color: var(--primary); }
  .btn-outline { background: transparent; color: var(--primary); border: 1px solid rgba(29,111,184,.35); }
  .btn-outline:hover { border-color: var(--primary); background: rgba(29,111,184,.04); }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 0 rgba(15,23,42,.02);
  }
  .site-header::before {
    content: "";
    display: block;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
  }
  .header-inner {
    display: flex;
    align-items: center;
    gap: 22px;
    height: 76px;
  }
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-right: 6px;
    flex-shrink: 0;
  }
  .brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 13px;
    background: linear-gradient(145deg, var(--primary), var(--primary-deep));
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 21px;
    font-weight: 800;
    box-shadow: 0 6px 16px -6px rgba(29,111,184,.5);
  }
  .brand-name {
    font-size: 20px;
    font-weight: 800;
    color: #0F2540;
    line-height: 1.1;
    letter-spacing: .01em;
  }
  .brand-name small {
    display: block;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .28em;
    color: var(--primary);
    margin-top: 3px;
    text-transform: uppercase;
  }
  .main-nav {
    display: flex;
    align-items: center;
    gap: clamp(8px, 1.6vw, 26px);
    margin-left: auto;
  }
  .main-nav a {
    position: relative;
    font-size: 16px;
    font-weight: 600;
    color: #364153;
    padding: 8px 2px;
    line-height: 1.2;
  }
  .main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    border-radius: 99px;
    background: var(--primary);
    transition: width .25s ease;
  }
  .main-nav a:hover { color: var(--primary); }
  .main-nav a:hover::after,
  .main-nav a.active::after { width: 100%; }
  .main-nav a.active { color: var(--primary); }
  .nav-action {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: 10px;
  }
  .nav-toggle-input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }
  .nav-toggle {
    display: none;
    margin-left: auto;
    width: 48px;
    height: 48px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--primary);
    cursor: pointer;
    background: #fff;
  }
  @media (max-width: 1080px) {
    .nav-action .btn span { display: none; }
    .nav-action .btn { width: 94px; padding: 0 8px; }
  }
  @media (max-width: 991px) {
    .header-inner { flex-wrap: wrap; height: auto; min-height: 76px; padding: 8px 0; }
    .nav-toggle { display: inline-flex; }
    .main-nav {
      width: 100%;
      max-height: 0;
      overflow: hidden;
      flex-direction: column;
      align-items: stretch;
      margin-left: 0;
      gap: 2px;
      transition: max-height .35s ease;
      border-top: 0 solid rgba(229,234,240,.8);
      background: #fff;
    }
    .nav-toggle-input:checked ~ .main-nav {
      max-height: 560px;
      border-top-width: 1px;
      padding: 12px 0 16px;
    }
    .main-nav a {
      display: block;
      min-height: 46px;
      font-size: 17px;
      padding: 10px 6px;
      border-radius: 10px;
    }
    .main-nav a::after { display: none; }
    .main-nav a.active,
    .main-nav a:hover { background: rgba(29,111,184,.07); }
    .nav-action { order: 3; margin-left: 0; width: 120px; margin-right: 10px; }
  }
  @media (max-width: 560px) {
    .container-site { width: min(1280px, 100% - 30px); }
    .brand-name { font-size: 18px; }
    .nav-action .btn { font-size: 14px; height: 44px; }
  }

  /* Hero */
  .hero {
    position: relative;
    isolation: isolate;
    padding: 88px 0 76px;
    background:
      linear-gradient(100deg, rgba(11,32,51,.90) 10%, rgba(17,59,92,.72) 60%, rgba(18,74,122,.55)),
      url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    color: #fff;
    overflow: hidden;
  }
  .hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
    background-size: 46px 46px;
    opacity: .6;
    pointer-events: none;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 60px;
    align-items: center;
  }
  .hero-title {
    font-size: clamp(34px, 4.2vw, 52px);
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0 0 22px;
  }
  .hero-title span {
    color: #BDE0FF;
    background: linear-gradient(95deg, #7CC4FF, #65E0D5);
    -webkit-background-clip: text;
    background-clip: text;
    color: #DFF5FF;
  }
  .hero-desc {
    font-size: 17px;
    line-height: 1.9;
    color: rgba(255,255,255,.84);
    max-width: 52ch;
    margin-bottom: 30px;
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 38px; }
  .hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 40px;
    border-top: 1px solid rgba(255,255,255,.15);
    padding-top: 24px;
  }
  .trust-item strong {
    font-size: 25px;
    font-weight: 800;
    font-variant: tabular-nums;
    margin-right: 8px;
    color: #fff;
  }
  .trust-item span { color: rgba(255,255,255,.7); font-size: 13px; }
  .hero-console {
    background: #fff;
    color: var(--text);
    border-radius: 22px;
    padding: 28px;
    box-shadow: 0 30px 60px -24px rgba(0,0,0,.35);
    border: 1px solid rgba(255,255,255,.38);
    position: relative;
  }
  .console-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 18px;
    margin-bottom: 18px;
  }
  .console-top h3 { font-size: 17px; font-weight: 700; margin: 0; display: flex; align-items: center; gap: 8px; }
  .dot-group { display: flex; gap: 6px; }
  .dot-group i { width: 10px; height: 10px; border-radius: 50%; background: #CBD5E1; }
  .dot-group i:first-child { background: var(--accent); }
  .gate-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .metric-line {
    background: #F1F5F9;
    border-radius: 14px;
    padding: 14px 14px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid #EDF1F7;
  }
  .metric-line > div:first-child { display: flex; align-items: center; gap: 10px; font-size: 14px; color: #334155; }
  .metric-line small { display: block; font-size: 12px; color: var(--text-weak); }
  .status { color: var(--accent); font-size: 14px; background: rgba(31,168,155,.1); padding: 3px 10px; border-radius: 30px; font-weight: 600; }
  @media (max-width: 991px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-console { max-width: 540px; }
  }

  /* stats bar */
  .stats-band {
    position: relative;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 52px 0;
  }
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
  }
  .stat-num {
    font-size: clamp(34px, 4vw, 48px);
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.02em;
    font-variant: tabular-nums;
    line-height: 1.1;
  }
  .stat-num em { font-style: normal; color: var(--accent); font-size: .65em; margin-left: 4px; vertical-align: super; }
  .stat-label { margin-top: 8px; font-size: 15px; color: var(--text-weak); }
  @media (max-width: 860px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
  }

  /* Service modules */
  .module-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
  @media (max-width: 900px) {
    .module-grid { grid-template-columns: 1fr; }
  }
  .module-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 28px 28px 26px;
    box-shadow: var(--shadow-sm);
    transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
    overflow: hidden;
    display: flex;
    gap: 22px;
  }
  .module-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: #CDE1F5;
  }
  .module-icon {
    width: 56px;
    height: 56px;
    flex: 0 0 56px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    font-size: 23px;
    color: var(--primary);
    background: rgba(29,111,184,.10);
    border: 1px solid rgba(29,111,184,.12);
  }
  .module-card:nth-child(even) .module-icon {
    color: var(--accent);
    background: rgba(31,168,155,.10);
    border-color: rgba(31,168,155,.14);
  }
  .module-card h3 { font-size: 20px; font-weight: 700; margin: 0 0 10px; }
  .module-card p { font-size: 15px; line-height: 1.85; color: #4B5563; margin: 0; }
  .module-tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
  .tag {
    font-size: 13px;
    color: #375E80;
    background: #F0F7FF;
    border: 1px solid #D8E8F8;
    border-radius: 999px;
    padding: 4px 12px;
  }
  .tag-green { color: #167A71; background: #EAF9F6; border-color: #CCEFE8; }

  /* Scene cards */
  .scene-wrap {
    background: #fff;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }
  .scene-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }
  @media (max-width: 1050px) {
    .scene-grid { grid-template-columns: repeat(2, 1fr); }
  }
  .scene-card {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    min-height: 300px;
    background: #123951;
    color: #fff;
    isolation: isolate;
    border: 1px solid #E4EBF1;
    box-shadow: var(--shadow-sm);
    transition: transform .28s ease, box-shadow .28s ease;
  }
  .scene-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
  .scene-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
  }
  .scene-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(185deg, rgba(18,42,65,0) 25%, rgba(11,28,43,.92) 88%);
    z-index: -1;
  }
  .scene-content { margin-top: auto; min-height: 300px; display: flex; flex-direction: column; justify-content: flex-end; padding: 26px 22px; }
  .scene-index {
    font-size: 13px;
    letter-spacing: .12em;
    color: #A8D2FF;
    margin-bottom: 6px;
    font-weight: 600;
  }
  .scene-card h3 { font-size: 22px; margin: 8px 0 8px; font-weight: 700; }
  .scene-card p { font-size: 14px; color: rgba(255,255,255,.78); line-height: 1.75; margin: 0 0 16px; }
  .scene-link { font-size: 14px; color: #FFCF91; display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }
  @media (max-width: 600px) {
    .scene-grid { grid-template-columns: 1fr; }
  }

  /* Case rows */
  .case-list { display: flex; flex-direction: column; }
  .case-row {
    display: grid;
    grid-template-columns: 100px minmax(0, 1fr) 34%;
    gap: 36px;
    align-items: center;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 20px 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    transition: transform .3s, box-shadow .3s, border-color .3s;
  }
  .case-row:hover { transform: translateX(6px); box-shadow: var(--shadow-hover); border-color: #BDDDF3; }
  .case-num {
    font-size: 38px;
    font-weight: 800;
    color: rgba(29,111,184,.14);
    font-variant: tabular-nums;
    line-height: 1;
    text-align: center;
    letter-spacing: -2px;
  }
  .case-copy h3 { font-size: 20px; font-weight: 800; margin: 0 0 8px; }
  .case-copy h3 small { font-weight: 500; color: var(--accent); font-size: 13px; margin-left: 10px; }
  .case-copy p { margin: 0; font-size: 15px; color: #526278; max-width: 620px; line-height: 1.8; }
  .case-thumb { border-radius: 14px; overflow: hidden; position: relative; aspect-ratio: 4/3; background: #E7EEF5; }
  .case-thumb img { width: 100%; height: 100%; filter: saturate(.92); transition: transform .4s ease; }
  .case-row:hover .case-thumb img { transform: scale(1.04); }
  @media (max-width: 900px) {
    .case-row { grid-template-columns: 76px 1fr; }
    .case-thumb { grid-column: 1 / -1; aspect-ratio: 16/8; }
  }
  @media (max-width: 540px) {
    .case-row { grid-template-columns: 48px 1fr; gap: 12px; }
    .case-num { font-size: 28px; align-self: start; padding-top: 4px; }
  }

  /* news list */
  .news-panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }
  .news-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    padding: 26px 30px;
    border-bottom: 1px solid #EDF0F5;
    transition: background .25s, box-shadow .25s;
  }
  .news-item:last-child { border-bottom: 0; }
  .news-item:hover { background: #F9FCFE; box-shadow: inset 4px 0 0 var(--primary); }
  .news-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
  .news-badge {
    background: rgba(29,111,184,.09);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
  }
  .news-date { font-size: 13px; color: var(--text-weak); }
  .news-item h4 { font-size: 17px; font-weight: 700; margin: 0 0 6px; line-height: 1.5; }
  .news-item p { font-size: 14px; color: #65758A; margin: 0; }
  .news-empty {
    padding: 56px 20px;
    text-align: center;
    color: var(--text-weak);
    border: 1px dashed #C6D5E4;
    border-radius: 18px;
    background: #FCFEFF;
  }
  .news-empty i { font-size: 36px; color: #AFC9E0; margin-bottom: 14px; }
  @media (max-width: 640px) {
    .news-item { flex-direction: column; padding: 22px 20px; }
    .news-item time { font-size: 13px; }
  }

  /* Pricing */
  .pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    align-items: stretch;
  }
  .price-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: var(--shadow-sm);
    transition: transform .3s, box-shadow .3s, border-color .3s;
  }
  .price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: #BFDDF2; }
  .price-card.center {
    border: 2px solid var(--accent);
    background: linear-gradient(180deg, #F6FFFD, #FFFFFF 40%);
    box-shadow: 0 18px 32px -22px rgba(31,168,155,.35);
  }
  .price-flag {
    position: absolute;
    top: -12px;
    left: 24px;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    padding: 4px 13px;
    border-radius: 30px;
    font-size: 13px;
  }
  .price-name { font-size: 18px; font-weight: 800; margin-top: 6px; }
  .price-type { font-size: 13px; color: var(--text-weak); margin: 4px 0 16px; }
  .price-amount {
    font-size: 34px;
    font-weight: 900;
    color: var(--text);
    line-height: 1.1;
    margin-bottom: 6px;
  }
  .price-amount small { font-size: 15px; color: #8496AB; font-weight: 500; }
  .price-desc { font-size: 14px; color: #5D6F82; margin-bottom: 20px; }
  .feature-list { list-style: none; margin: 0 0 26px; padding: 0; display: grid; gap: 10px; }
  .feature-list li { position: relative; padding-left: 30px; font-size: 15px; color: var(--text); }
  .feature-list li i {
    position: absolute;
    left: 0;
    top: 3px;
    color: var(--accent);
    font-size: 15px;
    width: 20px;
    height: 20px;
    display: grid;
    place-items: center;
    background: rgba(31,168,155,.1);
    border-radius: 50%;
  }
  .price-foot { margin-top: auto; }
  @media (max-width: 960px) {
    .pricing-grid { grid-template-columns: 1fr; max-width: 620px; }
  }

  /* FAQ */
  .faq-wrap {
    margin-top: 46px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
  @media (max-width: 900px) {
    .faq-wrap { grid-template-columns: 1fr; }
  }
  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }
  .faq-accordion { width: 100%; }
  .faq-accordion summary {
    list-style: none;
    cursor: pointer;
    padding: 20px 24px;
    font-weight: 700;
    font-size: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    min-height: 60px;
  }
  .faq-accordion summary::-webkit-details-marker { display: none; }
  .faq-accordion summary i { color: var(--accent); transition: transform .3s; font-size: 14px; }
  .faq-accordion[open] summary { border-bottom: 1px solid var(--border); background: #FAFDFF; }
  .faq-accordion[open] summary i { transform: rotate(180deg); }
  .faq-answer { padding: 20px 24px; font-size: 15px; color: #4B5B6A; line-height: 1.9; }

  /* CTA */
  .cta-band {
    background:
      linear-gradient(105deg, rgba(18,74,122,.95), rgba(29,111,184,.88)),
      url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    border-radius: 24px;
    color: #fff;
    overflow: hidden;
    padding: 42px 44px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    box-shadow: 0 26px 46px -22px rgba(18,74,122,.45);
  }
  .cta-title { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin: 0 0 10px; }
  .cta-desc { color: rgba(255,255,255,.85); font-size: 16px; }
  .cta-actions { display: flex; flex-wrap: wrap; gap: 12px; flex-shrink: 0; }
  .phone-line { margin-top: 15px; font-size: 14px; color: rgba(255,255,255,.8); }
  @media (max-width: 800px) {
    .cta-band { flex-direction: column; align-items: flex-start; padding: 34px 26px; }
    .cta-actions { width: 100%; }
    .cta-actions .btn { flex: 1; }
  }

  /* Footer */
  .site-footer {
    background: #12293B;
    color: rgba(255,255,255,.72);
    margin-top: 80px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.3fr;
    gap: 40px;
    padding: 58px 0 46px;
  }
  .footer-brand .brand-name { color: #fff; margin-bottom: 14px; }
  .footer-brand .brand-name small { color: #7FB9E8; }
  .footer-brand p { font-size: 14px; line-height: 1.9; color: rgba(255,255,255,.62); max-width: 360px; margin-bottom: 22px; }
  .footer-title { font-size: 15px; font-weight: 700; color: #fff; margin: 0 0 20px; letter-spacing: .02em; }
  .footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
  .footer-links a { font-size: 14px; color: rgba(255,255,255,.68); }
  .footer-links a:hover { color: #fff; padding-left: 4px; }
  .footer-contacts { list-style: none; margin: 0 0 22px; padding: 0; display: grid; gap: 14px; }
  .footer-contacts li { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; line-height: 1.6; }
  .footer-contacts i { color: var(--accent); margin-top: 3px; width: 18px; text-align: center; }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding: 18px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: rgba(255,255,255,.45);
  }
  .footer-bottom a { color: rgba(255,255,255,.6); }
  @media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 560px) {
    .footer-grid { grid-template-columns: 1fr; }
    .site-footer { margin-top: 48px; }
  }

  /* misc */
  .img-rounded { border-radius: 16px; }
  .wave-line {
    width: 54px;
    height: 3px;
    background: var(--accent);
    border-radius: 10px;
    margin-bottom: 20px;
  }

/* roulang page: article */
:root{
  --primary:#1D6FB8;
  --primary-deep:#124A7A;
  --primary-soft:rgba(29,111,184,.08);
  --accent:#1FA89B;
  --accent-deep:#17857b;
  --highlight:#F59E0B;
  --bg:#F8FAFC;
  --card-bg:#FFFFFF;
  --footer-bg:#12293B;
  --text:#16283B;
  --text-weak:#5B6B7B;
  --border:#E5EAF0;
  --radius:14px;
  --radius-lg:18px;
  --shadow-sm:0 1px 3px rgba(15,23,42,.06);
  --shadow-md:0 16px 28px -12px rgba(15,23,42,.14);
  --shadow-lg:0 24px 44px -16px rgba(15,23,42,.18);
  --font-base:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-base);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit}
.container-site{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:clamp(18px,4vw,48px);
  padding-right:clamp(18px,4vw,48px);
}
/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(160%) blur(12px);
  border-top:2px solid var(--primary);
  border-bottom:1px solid var(--border);
  box-shadow:0 6px 18px -14px rgba(15,23,42,.14);
}
.header-inner{
  display:flex;
  align-items:center;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:10px;
  background:linear-gradient(145deg,var(--primary),var(--primary-deep));
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:20px;
  box-shadow:0 8px 16px -8px rgba(29,111,184,.5);
}
.brand-name{
  font-size:18px;
  font-weight:800;
  color:#0E2030;
  letter-spacing:.5px;
  line-height:1.1;
  white-space:nowrap;
}
.brand-name small{
  display:block;
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  color:var(--text-weak);
  margin-top:3px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:34px;
  margin-left:auto;
}
.main-nav a{
  font-size:15px;
  font-weight:600;
  color:#2A3B4C;
  padding:10px 2px;
  position:relative;
  transition:color .2s ease;
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:100%;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.main-nav a:hover{
  color:var(--primary);
}
.main-nav a:hover::after,
.main-nav a.active::after{
  transform:scaleX(1);
}
.main-nav a.active{
  color:var(--primary-deep);
  font-weight:800;
}
.nav-action{
  margin-left:26px;
  flex-shrink:0;
}
.nav-toggle-input{
  position:absolute;
  opacity:0;
  width:1px;
  height:1px;
  pointer-events:none;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  margin-left:auto;
  font-size:19px;
  transition:all .2s ease;
}
@media (max-width:991px){
  .nav-action .btn span{display:none}
  .nav-action{
    margin-left:10px;
  }
}
@media (max-width:768px){
  .header-inner{
    min-height:64px;
    flex-wrap:wrap;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .nav-toggle-input:checked ~ .main-nav{
    display:flex;
  }
  .main-nav{
    display:none;
    order:10;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-top:1px solid var(--border);
    box-shadow:0 16px 30px -20px rgba(15,23,42,.18);
    padding:8px 0 18px;
  }
  .main-nav a{
    display:block;
    min-height:46px;
    line-height:46px;
    padding:0 14px;
    border-radius:10px;
    font-size:16px;
    font-weight:600;
    color:var(--text);
  }
  .main-nav a:hover{
    background:var(--primary-soft);
    color:var(--primary-deep);
  }
  .main-nav a::after{
    display:none;
  }
  .main-nav a.active{
    background:var(--primary-soft);
    color:var(--primary-deep);
  }
  .nav-action{
    min-height:44px;
  }
  .nav-action i{
    display:none;
  }
  .nav-action span{
    display:inline-block !important;
    font-size:14px;
  }
}
/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:44px;
  padding:10px 24px;
  border-radius:10px;
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .22s ease;
  line-height:1.2;
}
.btn:hover{
  transform:translateY(-1px);
}
.btn:focus-visible,
a:focus-visible{
  outline:3px solid rgba(29,111,184,.35);
  outline-offset:3px;
}
.btn:active{
  transform:translateY(1px) scale(.99);
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 10px 20px -12px rgba(29,111,184,.8);
}
.btn-primary:hover{
  background:var(--primary-deep);
}
.btn-accent{
  background:var(--accent);
  color:#fff;
}
.btn-accent:hover{
  background:var(--accent-deep);
}
.btn-light{
  background:#fff;
  color:var(--primary-deep);
}
.btn-light:hover{
  background:var(--bg);
}
/* breadcrumb */
.breadcrumb-wrap{
  padding:26px 0 0;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:14px;
  color:var(--text-weak);
}
.breadcrumb a{
  color:var(--text);
  font-weight:600;
  transition:color .2s;
}
.breadcrumb a:hover{
  color:var(--primary);
}
.breadcrumb i{
  font-size:12px;
  color:#c1cdd8;
}
/* Article Hero */
.article-hero{
  background:var(--card-bg);
  border-bottom:1px solid var(--border);
  padding:38px 0 46px;
  position:relative;
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:380px;
  height:380px;
  border-radius:50%;
  background:radial-gradient(circle,var(--primary-soft),transparent 70%);
  pointer-events:none;
}
.article-hero-inner{
  position:relative;
  z-index:2;
  max-width:900px;
  margin:0 auto;
}
.article-meta-bar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:22px;
}
.article-cat{
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-size:13px;
  font-weight:800;
  border-radius:8px;
  padding:5px 13px;
}
.article-cat i{
  color:var(--accent);
  font-size:11px;
}
.article-meta-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--text-weak);
  font-size:14px;
}
.article-meta-item i{
  color:var(--primary);
  font-size:15px;
}
.article-title{
  font-size:clamp(30px,4vw,46px);
  line-height:1.22;
  font-weight:850;
  letter-spacing:-.5px;
  color:#0D1F2E;
  margin-top:18px;
}
/* Article main */
.article-section{
  padding:52px 0 72px;
}
.article-layout{
  max-width:900px;
  margin:0 auto;
}
.article-body{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:clamp(24px,5vw,58px);
}
.cms-content{
  max-width:760px;
  margin:0 auto;
  font-size:16.5px;
  line-height:2;
  color:var(--text);
}
.cms-content p{
  margin-bottom:1.7em;
}
.cms-content h2{
  font-size:27px;
  font-weight:850;
  line-height:1.45;
  color:#0D1F2E;
  margin:41px 0 18px;
  padding-left:16px;
  border-left:4px solid var(--primary);
}
.cms-content h3{
  font-size:21px;
  font-weight:800;
  color:#14293A;
  margin:34px 0 14px;
}
.cms-content h4{
  font-size:18px;
  font-weight:800;
  color:#14293A;
  margin:26px 0 12px;
}
.cms-content ul{
  margin:0 0 24px;
  padding:0;
}
.cms-content ul li{
  position:relative;
  padding-left:26px;
  margin-bottom:10px;
}
.cms-content ul li::before{
  content:"";
  position:absolute;
  left:4px;
  top:.82em;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--accent);
}
.cms-content ol{
  list-style:decimal;
  margin:0 0 24px;
  padding-left:24px;
}
.cms-content ol li{
  margin-bottom:10px;
  padding-left:6px;
}
.cms-content blockquote{
  position:relative;
  background:#F0F6FB;
  border-radius:14px;
  margin:28px 0;
  padding:22px 28px 22px 44px;
  font-size:16px;
  color:#1E3A50;
  border-left:4px solid var(--primary);
}
.cms-content blockquote::before{
  content:"\201C";
  position:absolute;
  left:16px;
  top:12px;
  font-family:Georgia,serif;
  font-size:34px;
  color:var(--primary);
  line-height:1;
}
.cms-content a{
  color:var(--primary);
  font-weight:700;
  border-bottom:1px solid rgba(29,111,184,.3);
  transition:border-color .2s, color .2s;
}
.cms-content a:hover{
  color:var(--accent);
  border-color:var(--accent);
}
.cms-content img{
  border-radius:16px;
  margin:32px auto;
  box-shadow:var(--shadow-sm);
}
.cms-content img + em,
.cms-content figcaption{
  display:block;
  text-align:center;
  font-style:normal;
  font-size:13px;
  color:var(--text-weak);
  margin:-20px 0 28px;
}
.cms-content hr{
  border:none;
  border-top:1px solid var(--border);
  margin:36px 0;
}
.cms-content strong{
  color:#0D1F2E;
  font-weight:800;
}
.cms-content table{
  width:100%;
  border-collapse:collapse;
  margin:28px 0;
  font-size:14px;
}
.cms-content th,
.cms-content td{
  border:1px solid var(--border);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.cms-content th{
  background:#EEF4F9;
  font-weight:800;
  color:#0D1F2E;
}
/* article empty state */
.article-empty{
  text-align:center;
  padding:68px 20px 72px;
  border:1px dashed #CBD8E4;
  border-radius:16px;
  background:#FBFCFE;
}
.article-empty i{
  font-size:50px;
  color:#A7BCCE;
  margin-bottom:18px;
}
.article-empty h2{
  font-size:24px;
  font-weight:850;
  color:var(--text);
  margin-bottom:8px;
}
.article-empty p{
  color:var(--text-weak);
  margin-bottom:26px;
}
.article-empty .btn{
  box-shadow:var(--shadow-sm);
}
/* return link after content */
.article-footer-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:42px;
  border-top:1px solid var(--border);
  padding-top:30px;
  flex-wrap:wrap;
}
.article-footer-nav p{
  color:var(--text-weak);
  font-size:15px;
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.article-footer-nav p i{
  color:var(--accent);
}
.article-footer-nav .btn{
  min-height:42px;
  padding:8px 18px;
  font-size:14px;
}
/* related */
.related-section{
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:68px 0;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:38px;
  flex-wrap:wrap;
}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--accent);
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
  margin-bottom:6px;
}
.section-eyebrow i{
  color:var(--primary);
}
.section-title{
  font-size:clamp(25px,3vw,32px);
  font-weight:850;
  line-height:1.3;
  color:#0D1F2E;
  letter-spacing:-.3px;
}
.section-sub{
  color:var(--text-weak);
  margin-top:10px;
  max-width:600px;
  font-size:15.5px;
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all .25s ease;
  display:flex;
  flex-direction:column;
}
.news-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:#ccd8e4;
}
.news-card:active{
  transform:translateY(0) scale(.99);
}
.news-card-cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.news-card-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.news-card:hover .news-card-cover img{
  transform:scale(1.05);
}
.news-card-body{
  padding:20px 20px 22px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.news-card-tag{
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  background:rgba(31,168,155,.1);
  color:var(--accent-deep);
  font-size:12px;
  font-weight:800;
  letter-spacing:.05em;
  border-radius:6px;
  padding:4px 10px;
}
.news-card-title{
  font-size:17px;
  font-weight:800;
  line-height:1.55;
  color:#10283A;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .2s;
}
.news-card:hover .news-card-title{
  color:var(--primary);
}
.news-card-text{
  color:var(--text-weak);
  font-size:14px;
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:auto;
  color:var(--primary);
  font-weight:700;
  font-size:14px;
  transition:color .2s;
}
.news-card-more i{
  font-size:12px;
  transition:transform .2s;
}
.news-card:hover .news-card-more i{
  transform:translateX(4px);
}
/* CTA */
.cta-section{
  position:relative;
  background:linear-gradient(120deg,var(--primary-deep),var(--primary));
  padding:76px 0;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;
  right:8%;
  bottom:-40%;
  width:540px;
  height:540px;
  background:radial-gradient(circle,rgba(255,255,255,.12),transparent 62%);
  pointer-events:none;
}
.cta-box{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
  position:relative;
  z-index:2;
}
.cta-content{
  flex:1;
  min-width:280px;
}
.cta-content h2{
  color:#fff;
  font-size:clamp(25px,3vw,34px);
  font-weight:850;
  line-height:1.35;
  letter-spacing:.2px;
}
.cta-content p{
  color:rgba(255,255,255,.75);
  margin-top:12px;
  font-size:15.5px;
  max-width:580px;
}
.cta-buttons{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  position:relative;
  z-index:2;
}
/* footer */
.site-footer{
  background:var(--footer-bg);
  color:#D7E1EA;
  padding:68px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.4fr;
  gap:46px;
  padding-bottom:44px;
}
.footer-brand .brand{
  margin-bottom:18px;
}
.footer-brand .brand-name small{
  color:#D7E1EA;
  opacity:.6;
}
.footer-brand p{
  color:#B8C8D6;
  font-size:14px;
  line-height:2;
  max-width:330px;
}
.footer-title{
  font-size:16px;
  font-weight:800;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:.02em;
  position:relative;
  padding-bottom:8px;
}
.footer-title::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.footer-links li,
.footer-contacts li{
  margin-bottom:10px;
  font-size:14px;
}
.footer-links a{
  color:#B8C8D6;
  display:inline-flex;
  align-items:center;
  gap:7px;
  transition:all .2s;
  line-height:1.8;
}
.footer-links a i{
  font-size:10px;
  color:var(--accent);
}
.footer-links a:hover{
  color:#fff;
  padding-left:4px;
}
.footer-contacts li{
  color:#D0DCE5;
  line-height:1.8;
  display:flex;
  gap:10px;
  align-items:flex-start;
}
.footer-contacts i{
  color:var(--accent);
  font-size:16px;
  margin-top:4px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  color:#96ABC0;
  font-size:13px;
  flex-wrap:wrap;
}
.footer-bottom a{
  color:#D0DCE5;
  transition:color .2s;
}
.footer-bottom a:hover{
  color:#fff;
}
/* responsive */
@media (max-width:1023px){
  .related-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
}
@media (max-width:640px){
  .related-grid{
    grid-template-columns:1fr;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:34px;
    padding-bottom:30px;
  }
  .cta-box{
    flex-direction:column;
    align-items:flex-start;
  }
  .cta-section{
    padding:56px 0;
  }
  .article-section{
    padding:40px 0 54px;
  }
  .article-body{
    padding:24px 18px;
  }
  .article-hero{
    padding:26px 0 34px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
}

/* roulang page: category1 */
:root{
    --primary:#1D6FB8;
    --primary-deep:#124A7A;
    --primary-soft:#EAF3FB;
    --accent:#1FA89B;
    --accent-soft:#E7F7F4;
    --highlight:#F59E0B;
    --highlight-soft:#FFF4DF;
    --bg:#F8FAFC;
    --card:#FFFFFF;
    --text:#1E293B;
    --muted:#5B6B7C;
    --border:#E5EAF0;
    --footer:#12293B;
    --radius-sm:8px;
    --radius-md:12px;
    --radius-lg:16px;
    --shadow-card:0 1px 3px rgba(15,23,42,0.06);
    --shadow-hover:0 18px 30px -14px rgba(15,23,42,0.16);
  }
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
    background:var(--bg);
    color:var(--text);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  *,*::before,*::after{box-sizing:border-box}
  img{max-width:100%;height:auto;display:block}
  a{color:inherit;text-decoration:none}
  ul,ol,dl,dd{margin:0;padding:0}
  p{margin:0}
  button{font:inherit;cursor:pointer}
  input,textarea,select{font:inherit}

  .container-site{
    margin:0 auto;
    width:100%;
    max-width:1280px;
    padding-left:clamp(20px,4vw,48px);
    padding-right:clamp(20px,4vw,48px);
  }
  .site-header{
    background:rgba(255,255,255,.96);
    border-top:3px solid var(--primary);
    border-bottom:1px solid var(--border);
    position:sticky;
    top:0;
    z-index:70;
    box-shadow:0 4px 14px rgba(0,0,0,.03);
  }
  .site-header.scrolled{box-shadow:0 6px 18px rgba(15,23,42,.08)}
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    min-height:72px;
    flex-wrap:nowrap;
  }
  .nav-toggle-input{
    position:absolute;
    width:1px;
    height:1px;
    opacity:0;
    pointer-events:none;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:12px;
    flex-shrink:0;
  }
  .brand-mark{
    background:var(--primary);
    color:#fff;
    width:38px;
    height:38px;
    border-radius:10px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-weight:700;
    font-size:19px;
    box-shadow:0 8px 14px -8px rgba(29,111,184,.65);
  }
  .brand-name{
    color:#0F2637;
    font-weight:800;
    font-size:19px;
    letter-spacing:0;
    display:inline-flex;
    align-items:baseline;
    gap:6px;
    white-space:nowrap;
  }
  .brand-name small{
    font-size:12px;
    font-weight:600;
    color:var(--primary);
    border:1px solid rgba(29,111,184,.25);
    background:rgba(29,111,184,.06);
    padding:1px 7px;
    border-radius:6px;
    letter-spacing:.04em;
  }
  .main-nav{
    display:flex;
    align-items:center;
    gap:4px;
  }
  .main-nav a{
    position:relative;
    display:inline-flex;
    align-items:center;
    min-height:72px;
    padding:0 15px;
    color:#33475A;
    font-weight:600;
    font-size:15px;
    transition:color .2s ease;
    white-space:nowrap;
  }
  .main-nav a::after{
    content:"";
    position:absolute;
    left:14px;
    right:14px;
    bottom:0;
    height:3px;
    border-radius:3px 3px 0 0;
    background:var(--primary);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .2s ease;
  }
  .main-nav a:hover{color:var(--primary)}
  .main-nav a:hover::after{transform:scaleX(1)}
  .main-nav a.active{color:var(--primary)}
  .main-nav a.active::after{transform:scaleX(1)}
  .nav-action{
    display:inline-flex;
    align-items:center;
    gap:8px;
    flex-shrink:0;
  }
  .nav-action i{color:#fff}
  .nav-toggle{
    display:none;
    width:44px;
    height:44px;
    border:1px solid var(--border);
    border-radius:10px;
    background:#fff;
    align-items:center;
    justify-content:center;
    color:var(--primary);
    font-size:20px;
    cursor:pointer;
    transition:border-color .2s ease, color .2s ease;
  }
  .nav-toggle:hover{
    border-color:var(--primary);
    color:var(--primary);
  }

  @media (max-width:991px){
    .main-nav{
      display:flex;
      flex-direction:column;
      align-items:stretch;
      position:absolute;
      top:calc(100% + 0px);
      left:0;
      right:0;
      background:#fff;
      border-bottom:1px solid var(--border);
      max-height:0;
      overflow:hidden;
      padding:0 24px;
      transition:max-height .35s ease;
      box-shadow:0 18px 26px -18px rgba(15,23,42,.18);
      gap:0;
    }
    .main-nav a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      min-height:46px;
      padding:0 4px;
      border-bottom:1px solid #f1f5f9;
      color:#33475A;
    }
    .main-nav a:last-child{border-bottom:0}
    .main-nav a::after{
      left:auto;
      right:auto;
      width:16px;
      height:2px;
      bottom:6px;
      transform:scaleX(0);
    }
    .main-nav a:hover,.main-nav a.active{color:var(--primary)}
    .nav-toggle{
      display:inline-flex;
      margin-left:auto;
    }
    .nav-action{
      display:none;
    }
    .nav-toggle-input:checked ~ .main-nav{
      max-height:420px;
      padding:14px 4px;
    }
    .nav-toggle-input:checked ~ .nav-toggle{
      color:var(--primary);
      border-color:var(--primary);
    }
  }

  .hero-section{
    position:relative;
    overflow:hidden;
    background:
      radial-gradient(circle at 88% 18%, rgba(31,168,155,.10), transparent 24%),
      radial-gradient(circle at 14% 30%, rgba(29,111,184,.08), transparent 22%),
      #fff;
  }
  .hero-section::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(#b9c9da .6px, transparent .6px);
    background-size:20px 20px;
    opacity:.18;
    pointer-events:none;
  }
  .hero-inner{
    position:relative;
    display:grid;
    grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
    gap:56px;
    align-items:center;
    padding-top:64px;
    padding-bottom:56px;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:var(--primary-soft);
    color:var(--primary-deep);
    font-size:14px;
    font-weight:700;
    padding:6px 14px;
    border-radius:8px;
    margin-bottom:20px;
    letter-spacing:.02em;
  }
  .hero-title{
    font-size:clamp(32px,4.4vw,48px);
    line-height:1.2;
    font-weight:800;
    color:#102A43;
    margin-bottom:22px;
    letter-spacing:-.02em;
  }
  .hero-title .text-primary-color{color:var(--primary)}
  .hero-sub{
    font-size:17px;
    line-height:1.9;
    color:var(--muted);
    max-width:620px;
    margin-bottom:28px;
  }
  .hero-tags{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-bottom:30px;
  }
  .chip-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    background:#fff;
    border:1px solid var(--border);
    border-radius:8px;
    padding:6px 13px;
    font-size:14px;
    color:#36566e;
    box-shadow:0 1px 2px rgba(15,23,42,.03);
  }
  .chip-tag i{color:var(--accent)}
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-bottom:34px;
  }
  .hero-metrics{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:14px;
    border:1px solid var(--border);
    background:rgba(255,255,255,.7);
    border-radius:16px;
    padding:22px 18px;
    max-width:620px;
  }
  .hero-metric-item{
    display:flex;
    flex-direction:column;
  }
  .hero-metric-value{
    font-size:25px;
    font-weight:800;
    color:#0F2637;
    font-variant-numeric:tabular-nums;
    line-height:1.1;
  }
  .hero-metric-label{
    font-size:13px;
    color:var(--muted);
    line-height:1.4;
    margin-top:6px;
  }

  .hero-visual{
    position:relative;
  }
  .hero-visual .primary-image{
    width:100%;
    aspect-ratio:4/3;
    object-fit:cover;
    border-radius:20px;
    box-shadow:0 26px 46px -22px rgba(2,30,50,.4);
  }
  .float-panel{
    position:absolute;
    left:-22px;
    bottom:-18px;
    max-width:76%;
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(8px);
    border:1px solid var(--border);
    box-shadow:0 12px 26px -10px rgba(15,23,42,.18);
    border-radius:14px;
    padding:14px 18px;
    display:flex;
    align-items:center;
    gap:10px;
  }
  .float-panel i{
    width:38px;
    height:38px;
    border-radius:9px;
    background:var(--accent-soft);
    color:var(--accent);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:17px;
    flex:0 0 auto;
  }
  .float-panel strong{
    display:block;
    font-size:14px;
    color:#172A3A;
  }
  .float-panel span{
    font-size:13px;
    color:var(--muted);
  }

  .section-block{padding-top:80px;padding-bottom:80px}
  .section-block.bg-soft{background:#fff}
  .section-block.bg-tint{background:#F3F7FB}
  .section-head{
    max-width:780px;
    margin-bottom:48px;
  }
  .section-head .section-kicker{
    font-size:14px;
    font-weight:700;
    letter-spacing:.08em;
    color:var(--accent);
    text-transform:none;
    margin-bottom:10px;
  }
  .section-head h2{
    font-size:clamp(24px,2.6vw,34px);
    font-weight:800;
    letter-spacing:-.01em;
    line-height:1.3;
    color:#102A43;
    margin:0 0 14px;
  }
  .section-head p{
    color:var(--muted);
    font-size:17px;
    line-height:1.8;
    max-width:680px;
  }
  .section-head .split-line{
    width:52px;
    height:4px;
    border-radius:4px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    margin-bottom:18px;
  }

  .grid-system-cards{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:20px;
  }
  .system-card{
    background:#fff;
    border:1px solid var(--border);
    border-radius:16px;
    padding:26px 26px 22px;
    box-shadow:0 1px 3px rgba(15,23,42,.05);
    transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    position:relative;
    overflow:hidden;
  }
  .system-card::before{
    content:"";
    position:absolute;
    height:3px;
    top:0;
    left:0;
    right:0;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    opacity:0;
    transition:opacity .25s ease;
  }
  .system-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-hover);
    border-color:#DCE6F0;
  }
  .system-card:hover::before{opacity:1}
  .system-card-icon{
    width:48px;
    height:48px;
    border-radius:12px;
    background:var(--primary-soft);
    color:var(--primary);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:20px;
    margin-bottom:18px;
    transition:background .25s ease,color .25s ease;
  }
  .system-card:hover .system-card-icon{
    background:var(--accent);
    color:#fff;
  }
  .system-card h3{
    font-size:19px;
    font-weight:700;
    margin:0 0 10px;
    color:#152B40;
  }
  .system-card p{
    color:var(--muted);
    font-size:15px;
    line-height:1.75;
    margin:0;
  }
  .system-card .card-list{
    margin-top:14px;
    display:flex;
    flex-wrap:wrap;
    gap:8px;
  }
  .tiny-badge{
    background:#F1F5F9;
    color:#3A5A73;
    border-radius:6px;
    font-size:13px;
    padding:2px 9px;
  }

  .scene-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:18px;
  }
  .scene-tile{
    border-radius:16px;
    overflow:hidden;
    background:#fff;
    border:1px solid var(--border);
    transition:transform .25s ease, box-shadow .25s ease;
  }
  .scene-tile:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-hover);
  }
  .scene-tile .scene-pic{
    aspect-ratio:16/10;
    width:100%;
    object-fit:cover;
  }
  .scene-tile-body{
    padding:20px 18px;
  }
  .scene-tile-body h3{
    font-size:18px;
    font-weight:700;
    color:#182F43;
    margin:0 0 8px;
  }
  .scene-tile-body p{
    font-size:14px;
    line-height:1.7;
    color:var(--muted);
    margin:0;
  }

  .process-grid{
    display:grid;
    grid-template-columns:repeat(5,minmax(0,1fr));
    gap:16px;
    counter-reset:step;
  }
  .process-card{
    background:#fff;
    border:1px solid var(--border);
    border-radius:16px;
    padding:24px 18px;
    text-align:left;
    transition:transform .25s ease, box-shadow .25s ease;
  }
  .process-card:hover{
    transform:translateY(-3px);
    box-shadow:var(--shadow-hover);
  }
  .process-step{
    font-size:28px;
    font-weight:800;
    color:var(--primary);
    opacity:.32;
    line-height:1;
    font-variant-numeric:tabular-nums;
    margin-bottom:12px;
  }
  .process-card h3{
    font-size:17px;
    font-weight:700;
    color:#1C3348;
    margin:0 0 8px;
  }
  .process-card p{
    font-size:14px;
    color:var(--muted);
    line-height:1.7;
    margin:0;
  }

  .coverage-strip{
    background:var(--primary-deep);
    border-radius:22px;
    padding:40px 36px;
    display:grid;
    grid-template-columns:1.1fr 2fr;
    gap:34px;
    align-items:center;
    background-image:linear-gradient(120deg,rgba(18,74,122,.86),rgba(18,74,122,.7)),url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    box-shadow:0 22px 42px -24px rgba(11,61,105,.7);
  }
  .coverage-strip h2{
    color:#fff;
    font-size:24px;
    line-height:1.4;
    font-weight:800;
    margin:0;
  }
  .coverage-strip p{
    color:#CDE3F5;
    line-height:1.8;
    font-size:15px;
    margin:0;
  }
  .coverage-list{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:16px;
  }
  .coverage-item{
    background:rgba(255,255,255,.1);
    border:1px solid rgba(255,255,255,.16);
    border-radius:14px;
    padding:22px 20px;
    color:#fff;
    transition:background .25s ease,transform .25s ease;
  }
  .coverage-item:hover{
    background:rgba(255,255,255,.18);
    transform:translateY(-2px);
  }
  .coverage-item i{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;
    height:40px;
    background:rgba(255,255,255,.14);
    color:#fff;
    border-radius:10px;
    font-size:18px;
    margin-bottom:16px;
  }
  .coverage-item b{
    display:block;
    font-size:15px;
    margin-bottom:6px;
  }
  .coverage-item span{
    font-size:13px;
    line-height:1.6;
    color:rgba(245,250,255,.86);
  }

  .faq-panel{
    max-width:860px;
  }
  details.faq-item{
    background:#fff;
    border:1px solid var(--border);
    border-radius:14px;
    margin-bottom:12px;
    overflow:hidden;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  details.faq-item[open]{
    border-color:rgba(29,111,184,.45);
    box-shadow:0 12px 24px -16px rgba(15,23,42,.16);
  }
  details.faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:18px 22px;
    font-size:16px;
    font-weight:600;
    color:#1B3346;
  }
  details.faq-item summary::-webkit-details-marker{display:none}
  details.faq-item summary i{
    color:var(--primary);
    transition:transform .25s ease;
    font-size:14px;
    width:24px;
    height:24px;
    border-radius:50%;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    background:var(--primary-soft);
    flex:0 0 auto;
  }
  details.faq-item[open] summary i{
    transform:rotate(45deg);
    background:var(--accent);
    color:#fff;
  }
  details.faq-item .faq-body{
    padding:0 22px 20px;
    color:var(--muted);
    line-height:1.85;
    font-size:15px;
  }

  .cta-panel{
    background:linear-gradient(120deg,#12293B,var(--primary-deep) 60%,#124577);
    border-radius:24px;
    padding:56px 40px;
    display:grid;
    grid-template-columns:1.1fr .9fr;
    align-items:center;
    gap:44px;
    position:relative;
    overflow:hidden;
    color:#fff;
  }
  .cta-panel::before{
    content:"";
    position:absolute;
    right:-90px;
    top:-90px;
    width:270px;
    height:270px;
    border:36px solid rgba(255,255,255,.08);
    border-radius:50%;
    pointer-events:none;
  }
  .cta-copy h2{
    font-size:clamp(24px,3vw,34px);
    line-height:1.35;
    margin:0 0 14px;
    color:#fff;
    font-weight:800;
  }
  .cta-copy p{
    color:rgba(255,255,255,.86);
    font-size:16px;
    line-height:1.85;
    margin:0 0 20px;
    max-width:520px;
  }
  .cta-points{
    display:flex;
    flex-direction:column;
    gap:10px;
    margin:0;
    padding:0;
  }
  .cta-points li{
    display:flex;
    align-items:flex-start;
    gap:10px;
    color:rgba(255,255,255,.94);
    font-size:15px;
  }
  .cta-points i{
    color:var(--accent);
    margin-top:5px;
  }
  .cta-form-box{
    background:#fff;
    border-radius:18px;
    padding:26px 24px;
    color:var(--text);
    box-shadow:0 24px 50px -20px rgba(0,0,0,.35);
  }
  .cta-form-box .form-heading{
    font-size:19px;
    font-weight:800;
    color:#122B3D;
    margin-bottom:4px;
  }
  .cta-form-box .form-hint{
    font-size:13px;
    color:var(--muted);
    margin-bottom:16px;
  }
  .form-row{
    margin-bottom:14px;
  }
  .form-row label{
    display:block;
    font-size:14px;
    font-weight:600;
    color:#2C4558;
    margin-bottom:6px;
  }
  .form-row input,.form-row select{
    width:100%;
    height:46px;
    border:1px solid var(--border);
    border-radius:9px;
    padding:0 14px;
    background:#fff;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .form-row input:focus,.form-row select:focus{
    outline:none;
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(29,111,184,.12);
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:9px;
    min-height:44px;
    padding:10px 22px;
    border-radius:10px;
    border:1px solid transparent;
    font-weight:700;
    font-size:15px;
    line-height:1.2;
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
    white-space:nowrap;
  }
  .btn:active{transform:translateY(1px)}
  .btn-primary{
    background:var(--primary);
    color:#fff;
    box-shadow:0 10px 20px -10px rgba(29,111,184,.75);
  }
  .btn-primary:hover{
    background:var(--primary-deep);
    color:#fff;
    box-shadow:0 12px 24px -10px rgba(29,111,184,.8);
    transform:translateY(-1px);
  }
  .btn-accent{
    background:var(--accent);
    color:#082B28;
  }
  .btn-accent:hover{
    background:#108D82;
    color:#fff;
    transform:translateY(-1px);
    box-shadow:0 12px 22px -12px rgba(31,168,155,.7);
  }
  .btn-outline{
    background:transparent;
    color:var(--primary);
    border-color:rgba(29,111,184,.45);
  }
  .btn-outline:hover{
    background:rgba(29,111,184,.06);
    border-color:var(--primary);
  }
  .btn-light{
    background:#fff;
    color:var(--primary-deep);
    width:100%;
  }
  .btn-light:hover{
    background:#EAF3FB;
  }

  .site-footer{
    background:var(--footer);
    color:#B8C9D9;
    margin-top:60px;
  }
  .site-footer .brand-name{color:#fff}
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr .8fr .9fr 1.1fr;
    gap:44px;
    padding-top:60px;
    padding-bottom:40px;
  }
  .footer-brand p{
    margin-top:18px;
    font-size:15px;
    line-height:1.85;
    color:#A9BFD1;
  }
  .footer-grid h4.footer-title{
    color:#fff;
    font-size:16px;
    margin:0 0 18px;
    font-weight:700;
    letter-spacing:.02em;
  }
  .footer-links,.footer-contacts{
    list-style:none;
    display:flex;
    flex-direction:column;
    gap:12px;
    font-size:15px;
  }
  .footer-links a{
    color:#A9BFD1;
    transition:color .2s ease,padding-left .2s ease;
  }
  .footer-links a:hover{
    color:var(--accent);
    padding-left:3px;
  }
  .footer-contacts li{
    display:flex;
    align-items:flex-start;
    gap:8px;
    color:#A9BFD1;
  }
  .footer-contacts i{
    color:var(--accent);
    margin-top:4px;
    min-width:18px;
  }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:8px;
    padding-top:24px;
    padding-bottom:26px;
    font-size:14px;
    color:#90A7BC;
  }
  .footer-bottom a{
    color:#CBE1F5;
  }
  .footer-bottom a:hover{color:#fff}

  @media (max-width:991px){
    .hero-inner{grid-template-columns:1fr;gap:32px}
    .hero-metrics{grid-template-columns:repeat(4,1fr);max-width:100%;padding:18px 12px}
    .grid-system-cards{grid-template-columns:repeat(2,1fr)}
    .scene-grid{grid-template-columns:repeat(2,1fr)}
    .process-grid{grid-template-columns:repeat(3,1fr)}
    .coverage-list{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr}
    .cta-panel{grid-template-columns:1fr;padding:38px 24px}
    .coverage-strip{grid-template-columns:1fr}
    .hero-actions{flex-wrap:wrap}
  }
  @media (max-width:767px){
    .section-block{padding-top:58px;padding-bottom:58px}
    .grid-system-cards{grid-template-columns:1fr}
    .scene-grid{grid-template-columns:1fr}
    .process-grid{grid-template-columns:1fr}
    .coverage-strip{grid-template-columns:1fr;padding:28px 22px}
    .coverage-list{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:34px;padding-top:46px}
    .hero-metrics{grid-template-columns:repeat(2,1fr);gap:18px}
    .hero-inner{padding-top:40px;padding-bottom:44px}
    .footer-bottom{flex-direction:column;gap:6px}
    .cta-panel{padding:28px 20px}
    .cta-form-box{padding:20px 18px}
  }
  @media (max-width:520px){
    .hero-tags{overflow:hidden}
    .btn{width:100%}
    .brand-name{font-size:17px}
    .brand-name small{display:none}
    .hero-title{font-size:29px}
    .process-grid{grid-template-columns:1fr}
  }

/* roulang page: category2 */
:root{
  --primary:#1D6FB8;
  --primary-deep:#124A7A;
  --accent:#1FA89B;
  --highlight:#F59E0B;
  --bg:#F8FAFC;
  --card:#FFFFFF;
  --border:#E5EAF0;
  --text:#1E293B;
  --text-soft:#64748B;
  --footer:#12293B;
  --radius:14px;
  --shadow:0 1px 3px rgba(15,23,42,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit}
.container-site{width:min(1240px,92%);margin-inline:auto}
.section{padding:84px 0}
.section-bg-light{background:#fff}
.section-bg-alt{background:#F1F5F9}
.section-head{max-width:860px;margin:0 auto 46px;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:13px;
  letter-spacing:.08em;color:var(--primary);background:rgba(29,111,184,.08);
  border:1px solid rgba(29,111,184,.15);padding:7px 14px;border-radius:999px;margin-bottom:18px;
}
.section-title{
  font-size:clamp(28px,4vw,40px);
  line-height:1.25;font-weight:800;letter-spacing:-.02em;margin:0 0 18px;color:#0F172A;
}
.section-lead{color:var(--text-soft);font-size:17px;line-height:1.8;margin:0}

.site-header{
  position:sticky;top:0;z-index:999;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  border-top:4px solid var(--primary);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;align-items:center;flex-wrap:wrap;
  min-height:78px;gap:18px;position:relative;
}
.brand{display:flex;align-items:center;gap:10px;margin-right:24px}
.brand-mark{
  width:42px;height:42px;border-radius:12px;background:var(--primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:22px;box-shadow:0 6px 18px rgba(29,111,.3);
}
.brand-name{font-weight:800;font-size:22px;line-height:1.15;color:#0F172A;display:flex;flex-direction:column;letter-spacing:-.01em}
.brand-name small{font-size:11px;font-weight:500;color:#64748B;letter-spacing:.22em}
.main-nav{display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.main-nav a{
  font-size:15px;font-weight:600;color:#334155;padding:28px 0 22px;position:relative;
  transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:16px;width:0;height:2px;background:var(--primary);
  border-radius:4px;transition:width .25s ease;
}
.main-nav a:hover, .main-nav a.active{color:var(--primary)}
.main-nav a:hover::after, .main-nav a.active::after{width:26px}
.main-nav a.active{color:var(--primary-deep)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-weight:700;border-radius:10px;transition:all .22s ease;
}
.btn-primary{
  background:var(--primary);color:#fff;padding:11px 20px;font-size:15px;
  box-shadow:0 8px 20px -8px rgba(29,111,184,.55);
}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:0 14px 26px -10px rgba(29,111,.5)}
.btn-accent{
  background:var(--accent);color:#fff;padding:14px 28px;font-size:16px;
  box-shadow:0 10px 24px -10px rgba(31,168,155,.55);
}
.btn-accent:hover{background:#158f84;transform:translateY(-2px)}
.btn-ghost{
  border:1px solid rgba(255,255,255,.7);color:#fff;padding:14px 28px;font-size:16px;
  background:rgba(255,255,255,.1);
}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-deep{
  background:var(--primary-deep);color:#fff;padding:13px 26px;font-size:15px;
}
.btn-deep:hover{background:#0D3D62;transform:translateY(-2px)}
.nav-action{margin-left:auto}
.nav-toggle-input{position:absolute;opacity:0;pointer-events:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;align-items:center;justify-content:center;
  color:#0f172a;font-size:20px;border:1px solid var(--border);margin-left:auto;cursor:pointer;
  background:#fff;
}
.nav-toggle-input:focus-visible + .brand .brand-mark{
  outline:3px solid var(--highlight);
}
.nav-toggle:focus-visible{outline:3px solid rgba(29,111,.35)}
.btn:focus-visible,.main-nav a:focus-visible,.brand:focus-visible{
  outline:3px solid rgba(245,158,11,.5);outline-offset:4px;border-radius:6px;
}
.btn:active{transform:translateY(1px);box-shadow:0 4px 14px -8px rgba(18,74,122,.4)}

.cat-hero{
  min-height:520px;display:flex;align-items:center;position:relative;overflow:hidden;color:#fff;
  background:
    linear-gradient(100deg,rgba(18,74,122,.9) 0%,rgba(15,23,42,.76) 60%,rgba(15,45,68,.7) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;opacity:.08;
  background:repeating-linear-gradient(135deg,transparent 0 16px,rgba(255,255,255,.18) 16px 18px);
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;position:relative;z-index:2}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;color:#DCE9F7;
  border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.08);
  padding:8px 16px;border-radius:999px;font-weight:600;font-size:14px;margin-bottom:20px;
}
.hero-title{
  font-size:clamp(34px,5vw,54px);line-height:1.16;font-weight:900;letter-spacing:-.03em;margin:0 0 22px;
  text-shadow:0 2px 18px rgba(0,0,0,.12);
}
.hero-sub{
  font-size:18px;line-height:1.85;color:#E2E8F0;max-width:600px;margin-bottom:34px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{
  display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:46px;max-width:620px;
}
.hero-stat{
  border-left:3px solid var(--accent);background:rgba(255,255,255,.08);
  border-radius:12px;padding:14px 18px;backdrop-filter:blur(6px);
}
.hero-stat .num{font-size:28px;font-weight:900;color:#fff;letter-spacing:-.02em}
.hero-stat .label{font-size:14px;color:#BDE5E0;margin-top:2px}
.hero-visual{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.28);
  border-radius:20px;padding:10px;box-shadow:0 24px 50px -18px rgba(0,0,0,.3);
}
.hero-visual img{border-radius:14px;height:430px;width:100%;object-fit:cover}
.hero-visual-cap{
  display:flex;align-items:center;gap:10px;padding:14px 10px 6px;color:#E2E8F0;font-size:14px;
}
.hero-visual-cap i{color:#2BBCAD}

.card-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:20px;
}
.info-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  position:relative;
}
.info-card:hover{
  transform:translateY(-4px);box-shadow:0 18px 32px -14px rgba(15,23,42,.16);border-color:#C9D9E8;
}
.info-card-icon{
  width:52px;height:52px;border-radius:14px;background:rgba(29,111,.1);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;
  transition:background .2s ease,color .2s ease;
}
.info-card:nth-child(3n+2) .info-card-icon{background:rgba(31,168,.12);color:var(--accent)}
.info-card:nth-child(3n) .info-card-icon{background:rgba(245,158,11,.14);color:#D97706}
.info-card:hover .info-card-icon{background:var(--primary);color:#fff}
.info-card h3{font-size:19px;font-weight:800;margin:0 0 10px;color:#0F172A}
.info-card p{margin:0;color:var(--text-soft);font-size:15px;line-height:1.75}
.info-card-link{margin-top:16px;font-weight:700;font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.info-card-link:hover{color:var(--accent)}

.text-cols{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.image-box{
  border-radius:20px;overflow:hidden;border:1px solid var(--border);box-shadow:0 16px 34px -16px rgba(15,23,42,.2);
  position:relative;
}
.image-box img{width:100%;height:400px;object-fit:cover;transition:transform .5s ease}
.image-box:hover img{transform:scale(1.03)}
.image-box .cap{
  position:absolute;left:14px;bottom:14px;background:rgba(255,255,255,.92);color:#0F172A;
  font-size:13px;font-weight:700;padding:8px 14px;border-radius:999px;box-shadow:var(--shadow);
}
.media-badge{
  display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:13px;font-weight:800;
  letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px;
}
.media-badge::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}
.text-cols h2,.text-cols h3{font-size:30px;line-height:1.3;font-weight:800;margin:0 0 14px;color:#0F172A}
.text-cols p{color:var(--text-soft);font-size:17px;line-height:1.9;margin:0 0 18px}
.check-list{list-style:none;margin:20px 0 0;padding:0}
.check-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed #E2E8F0;color:#334155;font-size:16px;
}
.check-list li:last-child{border-bottom:0}
.check-list i{color:var(--accent);margin-top:4px;font-size:18px;flex:none}

.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:24px}
.scene-card{
  border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--border);
  box-shadow:var(--shadow);transition:all .25s ease;
}
.scene-card:hover{transform:translateY(-5px);box-shadow:0 18px 30px -14px rgba(15,23,42,.18)}
.scene-card img{width:100%;height:170px;object-fit:cover;border-bottom:1px solid var(--border)}
.scene-body{padding:20px 20px 24px}
.scene-tag{
  display:inline-block;font-size:12px;color:var(--primary);background:rgba(29,111,.09);
  font-weight:700;border-radius:999px;padding:4px 10px;margin-bottom:10px;
}
.scene-card h3{font-size:18px;margin:0 0 9px;font-weight:800;color:#0F172A}
.scene-card p{color:var(--text-soft);font-size:14px;line-height:1.7;margin:0}

.flow{
  display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:44px;counter-reset:flow;
}
.flow-step{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);counter-increment:flow;
  padding:26px 22px;text-align:center;position:relative;transition:all .25s ease;
}
.flow-step:hover{border-color:#BFD9EF;box-shadow:0 14px 24px -12px rgba(15,23,42,.16);transform:translateY(-3px)}
.flow-step::before{
  content:"0" counter(flow);
  display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;
  background:rgba(29,111,.1);color:var(--primary);font-weight:900;font-size:21px;margin-bottom:16px;
  transition:all .2s ease;
}
.flow-step:hover::before{background:var(--primary);color:#fff}
.flow-step h3{font-size:17px;font-weight:800;margin:0 0 6px}
.flow-step p{font-size:14px;color:var(--text-soft);margin:0}

.case-list{
  margin-top:44px;display:flex;flex-direction:column;gap:20px;counter-reset:caseItem;
}
.case-item{
  counter-increment:caseItem;background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px 28px;display:grid;grid-template-columns:100px 1fr auto;gap:30px;align-items:center;
  transition:all .22s ease;box-shadow:var(--shadow);
}
.case-item:hover{box-shadow:0 16px 28px -16px rgba(15,23,42,.2);border-color:#C6D9E8;transform:translateX(4px)}
.case-num::before{content:"0" counter(caseItem);}
.case-num{font-size:46px;font-weight:900;color:transparent;-webkit-text-stroke:1.5px var(--primary);line-height:1;letter-spacing:-.02em}
.case-txt h3{font-size:20px;font-weight:800;margin:0 0 6px;color:#0F172A}
.case-txt p{color:var(--text-soft);font-size:15px;margin:0}
.case-tag{
  text-align:right;font-size:14px;color:var(--primary);font-weight:800;white-space:nowrap;
  background:rgba(29,111,.08);border-radius:999px;padding:9px 16px;
}
.faq-wrap{
  max-width:920px;margin:34px auto 0;display:flex;flex-direction:column;gap:16px;
}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;
  box-shadow:0 1px 2px rgba(15,23,42,.03);transition:box-shadow .2s ease;
}
.faq-item[open]{box-shadow:0 12px 24px -14px rgba(15,23,42,.16);border-color:#C4D9EA}
.faq-item summary{
  display:flex;align-items:center;gap:14px;min-height:58px;padding:16px 22px;cursor:pointer;
  font-weight:700;font-size:17px;color:#0F172A;list-style:none;user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .qa{
  width:34px;height:34px;flex:none;border-radius:10px;background:rgba(29,111,.1);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-weight:900;font-size:15px;
}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;margin-left:auto;color:var(--primary);
  font-size:14px;transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-ans{padding:2px 24px 24px 70px;color:var(--text-soft);line-height:1.85;font-size:16px;margin:0}
.faq-ans a{color:var(--primary);font-weight:600}

.cta-dark{
  background:linear-gradient(120deg,#0E2C46 0%,var(--primary-deep) 60%,#144E6B 100%);
  color:#fff;border-radius:22px;background-size:cover;overflow:hidden;position:relative;
}
.cta-dark::before{
  content:"";position:absolute;right:-40px;top:-30px;width:260px;height:260px;
  background:radial-gradient(circle,rgba(31,168,155,.3),transparent 68%);
}
.cta-dark::after{
  content:"";position:absolute;left:-60px;bottom:-80px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(255,255,255,.12),transparent 68%);
}
.cta-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:40px;align-items:center;padding:60px;position:relative;z-index:2}
.cta-grid h2{font-size:clamp(24px,3vw,36px);font-weight:900;margin:0 0 14px;line-height:1.3}
.cta-grid p{color:#C9DEEB;font-size:16px;margin:0;line-height:1.8}
.cta-grid .btn-wrap{text-align:right;display:flex;flex-direction:column;gap:14px;align-items:flex-end}

.site-footer{
  background:var(--footer);color:#C8DBE8;font-size:14px;padding:64px 0 0;margin-top:80px;
}
.footer-grid{
  display:grid;grid-template-columns:1.8fr 1fr 1fr 1.2fr;gap:42px;padding-bottom:38px;
}
.footer-brand .brand-name{color:#fff;margin-bottom:12px}
.footer-brand p{color:#AEC4D4;line-height:1.9;margin:14px 0 0;max-width:340px}
.footer-title{color:#fff;font-size:16px;font-weight:700;margin:0 0 18px;letter-spacing:.02em}
.footer-title::after{content:"";display:block;width:28px;height:2px;background:var(--accent);margin-top:12px;border-radius:2px}
.footer-links,.footer-contacts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-links a{color:#AEC4D4;transition:color .2s ease,padding-left .2s ease}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-contacts li{display:flex;gap:10px;align-items:flex-start;color:#AEC4D4}
.footer-contacts i{color:#5FB8AD;margin-top:4px;width:18px;text-align:center}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:24px 0;display:flex;justify-content:space-between;gap:12px;
  flex-wrap:wrap;color:#8BA7B8;font-size:13px;
}
.footer-bottom a{color:#9FC3D4}
.footer-bottom a:hover{color:#fff}

@media (max-width:1200px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .header-inner{flex-wrap:nowrap;}
  .nav-toggle{display:flex}
  .nav-action{display:none}
  .brand{margin-right:10px}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;width:100%;flex-direction:column;
    background:#fff;padding:16px 22px 22px;border-bottom:1px solid var(--border);
    box-shadow:0 22px 28px -18px rgba(15,23,42,.18);gap:0;
  }
  .main-nav a{padding:14px 10px;border-bottom:1px solid #EEF2F7;font-size:16px;border-radius:8px;line-height:1.5}
  .main-nav a::after{display:none}
  .main-nav a.active,.main-nav a:hover{background:rgba(29,111,.08);color:var(--primary)}
  .nav-toggle-input:checked ~ .main-nav{display:flex;flex-direction:column}
  .hero-grid,.text-cols{grid-template-columns:1fr;gap:10px}
  .hero-visual{display:none}
  .visual-adjust .text-cols{grid-template-columns:1fr}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(5,1fr);overflow-x:auto;padding-bottom:12px}
  .cta-grid{grid-template-columns:1fr;padding:36px}
  .cta-grid .btn-wrap{text-align:left;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .section{padding:52px 0}
  .header-inner{min-height:68px}
  .brand-name{font-size:18px}
  .brand-mark{width:36px;height:36px;font-size:18px;border-radius:10px}
  .cat-hero{min-height:560px;padding:34px 0}
  .hero-title{font-size:34px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}
  .hero-stat .num{font-size:22px}
  .card-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(5,minmax(200px,1fr));gap:10px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .case-item{grid-template-columns:64px 1fr;gap:16px;padding:20px}
  .case-num{font-size:36px}
  .case-tag{display:none}
  .cat-hero .hero-sub{font-size:16px}
  .btn-accent,.btn-ghost{width:100%}
  .hero-actions{flex-direction:column}
  .image-box img{height:260px}
  .faq-ans{padding:0 18px 20px}
}

/* roulang page: category3 */
:root {
    --primary: #1D6FB8;
    --primary-deep: #124A7A;
    --accent: #1FA89B;
    --accent-soft: #E0F5F2;
    --highlight: #F59E0B;
    --bg: #F8FAFC;
    --card: #FFFFFF;
    --footer: #12293B;
    --text: #16202B;
    --muted: #5B6B7B;
    --border: #E5EAF0;
    --radius: 14px;
    --shadow: 0 1px 3px rgba(15,23,42,.06);
    --shadow-hover: 0 16px 28px -12px rgba(15,23,42,.14);
    --container: 1240px;
  }

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

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }

  body {
    margin: 0;
    background: var(--bg);
    color: #1E293B;
    font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.75;
  }

  h1, h2, h3, h4, p, figure, ol, ul, li {
    margin: 0;
    padding: 0;
  }

  ul,
  ol {
    list-style: none;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

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

  button,
  input,
  select,
  textarea {
    font: inherit;
  }

  :focus-visible {
    outline: 3px solid rgba(29, 111, 184, .55);
    outline-offset: 2px;
    border-radius: 4px;
  }

  ::selection {
    background: rgba(29, 111, 184, .15);
  }

  .container-site {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 28px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    font-weight: 600;
    border-radius: 10px;
    min-height: 48px;
    padding: 0 24px;
    border: 1px solid transparent;
    line-height: 1;
    cursor: pointer;
    transition: background .25s, color .25s, border-color .25s, transform .2s, box-shadow .25s;
    white-space: nowrap;
  }

  .btn-primary {
    background: var(--primary);
    color: #FFFFFF;
  }

  .btn-primary:hover {
    background: var(--primary-deep);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -10px rgba(18, 74, 122, .45);
  }

  .btn-primary:active {
    transform: translateY(0) scale(.98);
  }

  .btn-light {
    background: #FFFFFF;
    color: var(--primary-deep);
  }

  .btn-light:hover {
    background: var(--accent-soft);
    transform: translateY(-2px);
    box-shadow: 0 14px 24px -12px rgba(15, 23, 42, .2);
  }

  .btn-outline-white {
    background: rgba(255, 255, 255, .08);
    border-color: rgba(255, 255, 255, .42);
    color: #FFFFFF;
  }

  .btn-outline-white:hover {
    background: rgba(255, 255, 255, .16);
    transform: translateY(-2px);
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 70;
    background: rgba(255, 255, 255, .9);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    box-shadow: inset 0 3px 0 var(--primary), 0 8px 20px rgba(15, 23, 42, .04);
  }

  .header-inner {
    position: relative;
    display: flex;
    align-items: center;
    gap: 24px;
    min-height: 82px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    border-radius: 12px;
    background: var(--primary);
    color: #FFFFFF;
    font-size: 22px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 18px -8px rgba(29, 111, 184, .7);
  }

  .brand-name {
    font-weight: 800;
    font-size: 20px;
    line-height: 1.2;
    color: #0F172A;
    letter-spacing: .01em;
  }

  .brand-name small {
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    margin-left: 6px;
    letter-spacing: .06em;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 34px;
    margin-left: 12px;
  }

  .main-nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    color: #334155;
    font-weight: 600;
    transition: color .2s;
  }

  .main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width .25s;
  }

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

  .main-nav a:hover::after,
  .main-nav a.active::after {
    width: 100%;
  }

  .main-nav a.active {
    color: var(--primary-deep);
  }

  .nav-action {
    min-height: 42px;
    padding: 0 18px;
    margin-left: auto;
    font-size: 14px;
  }

  .nav-toggle,
  .nav-toggle-input {
    display: none;
  }

  .nav-toggle {
    width: 44px;
    height: 44px;
    margin-left: auto;
    flex: 0 0 44px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 11px;
    color: var(--primary-deep);
    font-size: 18px;
    background: #FFFFFF;
    cursor: pointer;
  }

  .nav-toggle:hover {
    border-color: var(--primary);
    background: #F8FAFC;
  }

  .category-hero {
    position: relative;
    background-color: #0E1F2F;
    background-size: cover;
    background-position: center;
  }

  .category-hero .breadcrumb {
    font-size: 14px;
    color: #BFD1DF;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
  }

  .category-hero .breadcrumb a {
    color: #C6DBE9;
    transition: color .2s;
  }

  .category-hero .breadcrumb a:hover {
    color: #FFFFFF;
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    color: var(--primary);
    text-transform: uppercase;
  }

  .feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform .25s, box-shadow .25s, border-color .25s;
  }

  .feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: #C7DBED;
  }

  .case-row {
    transition: background .3s;
  }

  .case-image-wrap {
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

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

  .case-row:hover .case-image-wrap img {
    transform: scale(1.02);
  }

  .case-no {
    font-size: 14px;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: .08em;
  }

  .case-points li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 15px;
    color: #46586A;
  }

  .case-points .case-point-icon {
    color: var(--accent);
    margin-top: 5px;
  }

  .stat-item .stat-num {
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
    font-variant-numeric: tabular-nums;
    font-size: 44px;
    font-weight: 800;
    line-height: 1;
    color: var(--primary-deep);
  }

  .stat-item .stat-num span {
    font-size: 24px;
    color: var(--primary);
  }

  .step-item {
    position: relative;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: transform .25s, box-shadow .25s, border-color .25s;
  }

  .step-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: #C7DBED;
  }

  .step-index {
    font-size: 15px;
    font-weight: 800;
    color: var(--accent);
    display: inline-flex;
    width: 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    border-radius: 12px;
  }

  .faq-panel .faq-item {
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 1px 2px rgba(15,23,42,.04);
    transition: box-shadow .25s, border-color .25s;
  }

  .faq-panel .faq-item:hover {
    border-color: #C7DBED;
    box-shadow: var(--shadow);
  }

  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    cursor: pointer;
    list-style: none;
    padding: 20px 22px;
    font-weight: 700;
    color: #152434;
    font-size: 17px;
    border-radius: 16px;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary .faq-icon {
    width: 30px;
    height: 30px;
    flex: 0 0 30px;
    color: var(--primary);
    background: #EFF6FC;
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform .3s, background .2s;
  }

  .faq-item[open] summary .faq-icon {
    transform: rotate(45deg);
    background: var(--primary);
    color: #FFFFFF;
  }

  .faq-answer {
    padding: 0 22px 22px;
    color: #526476;
    font-size: 15.5px;
    line-height: 1.85;
  }

  .cta-final {
    background: #0B2E46;
    position: relative;
    overflow: hidden;
    isolation: isolate;
  }

  .cta-final::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 8% 20%, rgba(31, 168, 155, .28), transparent 28%),
      radial-gradient(circle at 88% 88%, rgba(29, 111, 184, .32), transparent 32%);
    z-index: -1;
  }

  .site-footer {
    background: var(--footer);
    color: #B9C7D4;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding: 68px 0 48px;
  }

  .footer-brand .brand-name {
    color: #FFFFFF;
  }

  .footer-brand .brand-name small {
    color: #72C7EA;
  }

  .footer-brand p {
    color: #A9B9C6;
    font-size: 14.5px;
    line-height: 1.85;
    margin-top: 18px;
    max-width: 360px;
  }

  .footer-title {
    color: #FFFFFF;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
  }

  .footer-links li + li,
  .footer-contacts li + li {
    margin-top: 11px;
  }

  .footer-links a {
    color: #B9C7D4;
    font-size: 14.5px;
    transition: color .2s, padding-left .2s;
  }

  .footer-links a:hover {
    color: #FFFFFF;
    padding-left: 3px;
  }

  .footer-contacts li {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    font-size: 14.5px;
    color: #B9C7D4;
    line-height: 1.7;
  }

  .footer-contacts i {
    color: #6BBFCE;
    margin-top: 5px;
  }

  .footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 22px 0 26px;
    font-size: 14px;
    color: #95A9B8;
  }

  .footer-bottom a {
    color: #CCE3F0;
    transition: color .2s;
  }

  .footer-bottom a:hover {
    color: #FFFFFF;
  }

  @media (max-width: 1023px) {
    .header-inner {
      min-height: 68px;
      gap: 12px;
    }

    .brand-name {
      font-size: 18px;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      flex-basis: 38px;
      font-size: 19px;
      border-radius: 10px;
    }

    .main-nav {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      display: none;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      margin-left: 0;
      background: #FFFFFF;
      padding: 14px 24px 22px;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 24px 34px -18px rgba(15,23,42,.18);
      max-height: calc(100vh - 76px);
      overflow: auto;
    }

    #navToggle:checked ~ .main-nav {
      display: flex;
    }

    .main-nav a {
      display: flex;
      align-items: center;
      min-height: 48px;
      padding: 0 12px;
      border-radius: 10px;
      font-size: 16px;
      border-bottom: 1px solid #F1F5F9;
    }

    .main-nav a:last-child {
      border-bottom: 0;
    }

    .main-nav a::after {
      display: none;
    }

    .main-nav a:hover {
      background: #F1F8FE;
      color: var(--primary);
    }

    .main-nav a.active {
      background: #EFF6FC;
      color: var(--primary-deep);
    }

    .nav-toggle {
      display: inline-flex;
    }

    .nav-action {
      min-height: 42px;
      padding: 0 14px;
    }

    .nav-action span {
      display: none;
    }

    .nav-action i {
      margin-right: 0;
    }
  }

  @media (max-width: 767px) {
    .container-site {
      padding: 0 20px;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
      padding: 48px 0 34px;
    }

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

    .stat-item .stat-num {
      font-size: 34px;
    }

    .faq-item summary {
      padding: 17px 16px;
      font-size: 16px;
    }

    .faq-answer {
      padding: 0 16px 18px;
    }
  }

  @media (max-width: 520px) {
    .brand-name {
      font-size: 16px;
    }

    .brand-name small {
      font-size: 10px;
    }

    .btn {
      min-height: 44px;
      padding: 0 18px;
    }

    .nav-action {
      min-height: 38px;
    }
  }

/* roulang page: category4 */
:root {
    --primary: #1D6FB8;
    --primary-deep: #124A7A;
    --accent: #1FA89B;
    --accent-light: #E6F5F3;
    --highlight: #F59E0B;
    --background: #F8FAFC;
    --card: #FFFFFF;
    --footer-bg: #12293B;
    --text: #1E293B;
    --text-light: #F1F5F9;
    --muted: #64748B;
    --border: #E5EAF0;
    --radius-md: 14px;
    --radius-lg: 22px;
    --shadow-soft: 0 1px 3px rgba(15, 23, 42, 0.06);
    --shadow-hover: 0 16px 28px -12px rgba(15, 23, 42, 0.14);
    --space-section: 96px;
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 96px;
  }

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

  h1, h2, h3, h4 {
    line-height: 1.2;
    margin: 0;
  }

  p {
    margin-top: 0;
  }

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

  a {
    color: inherit;
    text-decoration: none;
  }

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

  button, input, textarea {
    font: inherit;
  }

  .container-site {
    width: min(1280px, calc(100% - 32px));
    margin-right: auto;
    margin-left: auto;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 70;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: inset 0 2px 0 var(--primary), 0 1px 3px rgba(15, 23, 42, 0.06);
    backdrop-filter: blur(12px);
  }

  .header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    min-height: 80px;
  }

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

  .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-size: 21px;
    font-weight: 800;
    box-shadow: 0 6px 14px rgba(29, 111, 184, 0.26);
  }

  .brand-name {
    color: #0F2436;
    font-weight: 800;
    font-size: 20px;
    letter-spacing: 0.02em;
  }

  .brand-name small {
    display: block;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--primary);
    margin-top: 2px;
  }

  .main-nav {
    display: none;
    align-items: center;
  }

  .main-nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 18px;
    color: #334155;
    font-weight: 600;
    font-size: 16px;
    transition: color 0.2s ease, background 0.2s ease;
  }

  .main-nav a::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 5px;
    height: 3px;
    border-radius: 999px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.22s ease;
  }

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

  .main-nav a:hover::after {
    transform: scaleX(1);
  }

  .main-nav a.active {
    color: var(--primary-deep);
    background: #EEF6FD;
    border-radius: 8px;
  }

  .main-nav .active::after {
    left: 10px;
    right: 10px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: #F1F5F9;
    color: #124A7A;
    font-size: 18px;
    cursor: pointer;
  }

  .nav-toggle:focus-visible,
  .main-nav a:focus-visible,
  .nav-action:focus-visible,
  .btn:focus-visible,
  a:focus-visible,
  summary:focus-visible {
    outline: 3px solid rgba(31, 168, 155, 0.5);
    outline-offset: 3px;
  }

  .nav-toggle-input {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    border: 0;
    clip: rect(0 0 0 0);
    overflow: hidden;
    white-space: nowrap;
    opacity: 0;
  }

  .nav-toggle-input:checked ~ .main-nav {
    display: flex;
    position: absolute;
    top: calc(100% - 2px);
    left: 12px;
    right: 12px;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 16px;
    box-shadow: 0 20px 34px -16px rgba(15, 23, 42, 0.24);
    overflow-y: auto;
    max-height: calc(100vh - 90px);
  }

  .nav-toggle-input:checked ~ .main-nav a {
    width: 100%;
    padding: 12px 16px;
    border-radius: 10px;
  }

  .nav-toggle-input:checked ~ .main-nav a::after {
    display: none;
  }

  .nav-action {
    margin-left: auto;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    border: 1px solid transparent;
    border-radius: 10px;
    padding: 13px 22px;
    font-weight: 700;
    font-size: 15px;
    line-height: 1.4;
    background: transparent;
    cursor: pointer;
    transition: background 0.22s ease, border-color 0.22s ease, color 0.22s ease, transform 0.15s ease, box-shadow 0.22s ease;
  }

  .btn i {
    font-size: 15px;
  }

  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 10px 20px -12px rgba(29, 111, 184, 0.72);
  }

  .btn-primary:hover {
    background: var(--primary-deep);
    transform: translateY(-2px);
    box-shadow: 0 14px 24px -12px rgba(18, 74, 122, 0.5);
  }

  .btn-white {
    background: #fff;
    color: var(--primary-deep);
  }

  .btn-white:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
  }

  .btn-outline-light {
    border-color: rgba(255, 255, 255, 0.72);
    color: #fff;
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
    transform: translateY(-2px);
  }

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

  .btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
  }

  .btn:active,
  .plan-link:active {
    transform: translateY(1px) scale(0.99);
  }

  .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
  }

  .section-compact {
    padding-top: 70px;
    padding-bottom: 70px;
  }

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

  .section-muted {
    background: #EEF4F8;
  }

  .section-head {
    max-width: 820px;
    margin-bottom: 48px;
  }

  .section-head--center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    padding: 7px 14px;
    border-radius: 999px;
    background: var(--accent-light);
    color: #0D8A80;
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 0.04em;
  }

  .section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    color: #102A3B;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
  }

  .section-lead {
    color: var(--muted);
    font-size: 17px;
    max-width: 720px;
    margin-bottom: 0;
  }

  .section-head--center .section-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-section {
    position: relative;
    padding: 90px 0;
    overflow: hidden;
    background-image: url("/assets/images/backpic/back-3.png");
    background-size: cover;
    background-position: center;
  }

  .hero-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(15, 34, 49, 0.92) 0%, rgba(18, 41, 59, 0.8) 68%, rgba(29, 111, 184, 0.72) 100%);
  }

  .hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 48px;
    align-items: center;
  }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: #E5F3FF;
    font-weight: 600;
    font-size: 14px;
  }

  .hero-copy h1 {
    font-size: clamp(34px, 5vw, 52px);
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 18px;
  }

  .hero-h-brand {
    display: block;
    color: #BFE3F8;
    font-size: 0.5em;
    letter-spacing: 0.02em;
    margin-top: 12px;
    font-weight: 600;
  }

  .hero-copy p {
    color: rgba(241, 245, 249, 0.9);
    font-size: 18px;
    line-height: 1.9;
    max-width: 640px;
    margin-bottom: 30px;
  }

  .hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 34px;
  }

  .hero-trust {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    max-width: 560px;
  }

  .hero-trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #D9EAF5;
    font-size: 14px;
    line-height: 1.5;
  }

  .hero-trust-item i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 50%;
    background: rgba(31, 168, 155, 0.24);
    color: #CDF2EF;
    font-size: 14px;
  }

  .hero-board {
    position: relative;
    border-radius: 24px;
    background: #fff;
    overflow: hidden;
    box-shadow: 0 24px 44px -18px rgba(0, 0, 0, 0.32);
    transform: translateY(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .hero-board:hover {
    transform: translateY(-4px);
    box-shadow: 0 30px 50px -18px rgba(0, 0, 0, 0.24);
  }

  .board-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid #EEF2F6;
    color: #344E68;
    font-weight: 700;
  }

  .board-header-dot {
    display: inline-flex;
    gap: 6px;
  }

  .board-header-dot i {
    color: #C3CED9;
    font-size: 12px;
  }

  .board-photo {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }

  .board-summary {
    padding: 20px;
  }

  .board-summary h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #102A3B;
  }

  .board-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    margin-top: 12px;
    color: var(--muted);
    font-size: 14px;
  }

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

  .board-meta i {
    color: var(--accent);
  }

  .quick-link-section {
    background: #fff;
    border-bottom: 1px solid var(--border);
  }

  .quick-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .quick-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 210px;
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
    box-shadow: var(--shadow-soft);
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  }

  .quick-card:hover {
    transform: translateY(-4px);
    border-color: #B9D8F1;
    box-shadow: var(--shadow-hover);
  }

  .quick-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: #EAF4FC;
    color: var(--primary);
    font-size: 20px;
    margin-bottom: 14px;
  }

  .quick-card:nth-child(2) .quick-icon {
    background: var(--accent-light);
    color: #129087;
  }

  .quick-card h3 {
    color: #132E41;
    font-size: 20px;
    margin-bottom: 8px;
  }

  .quick-card p {
    color: var(--muted);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 18px;
  }

  .quick-link {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 700;
    font-size: 15px;
  }

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

  .system-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .system-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 22px;
    overflow: hidden;
    transition: transform 0.24s ease, box-shadow 0.24s ease;
  }

  .system-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
  }

  .system-media {
    position: relative;
    overflow: hidden;
    min-height: 220px;
  }

  .system-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .system-tag {
    position: absolute;
    left: 16px;
    top: 16px;
    padding: 6px 13px;
    border-radius: 999px;
    background: rgba(18, 74, 122, 0.88);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
  }

  .system-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
  }

  .system-content h3 {
    font-size: 22px;
    color: #102A3B;
    margin-bottom: 12px;
  }

  .system-content p {
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: 18px;
  }

  .system-list {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    margin-bottom: 18px;
  }

  .system-list li {
    position: relative;
    padding-left: 22px;
    color: #334155;
    font-size: 15px;
  }

  .system-list li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--accent);
  }

  .plan-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    align-items: stretch;
  }

  .plan-box {
    position: relative;
    border-radius: 20px;
    background: #fff;
    border: 1px solid var(--border);
    padding: 34px 30px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-soft);
    transition: transform 0.24s ease, box-shadow 0.24s ease;
  }

  .plan-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }

  .plan-box.is-featured {
    border: 2px solid var(--accent);
    background: linear-gradient(180deg, #FDFEFE 0%, #EDFBF8 100%);
  }

  .plan-label {
    display: inline-block;
    align-self: flex-start;
    padding: 5px 13px;
    border-radius: 999px;
    background: #EAF4FC;
    color: var(--primary-deep);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 18px;
  }

  .plan-label.hot-label {
    background: #EAFBF8;
    color: #0F8F84;
  }

  .plan-box h3 {
    font-size: 23px;
    color: #102A3B;
    margin-bottom: 10px;
  }

  .plan-use {
    color: var(--muted);
    font-size: 15px;
    margin-bottom: 20px;
    border-bottom: 1px dashed #DCE4ED;
    padding-bottom: 16px;
  }

  .plan-features {
    margin-bottom: 26px;
  }

  .plan-features li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    color: #334155;
    font-size: 15px;
    line-height: 1.7;
  }

  .plan-features li::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 1px;
    color: var(--accent);
    font-size: 14px;
  }

  .plan-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 800;
    font-size: 16px;
    margin-top: auto;
    padding: 8px 0;
    border-radius: 6px;
    transition: color 0.2s ease, background 0.2s ease;
  }

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

  .quota-note {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    align-items: center;
    margin-top: 34px;
    padding: 20px 24px;
    border-radius: 18px;
    background: var(--accent-light);
    color: #20465C;
    font-size: 15px;
  }

  .quota-note i {
    color: var(--accent);
    font-size: 22px;
  }

  .process-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    counter-reset: processCounter;
  }

  .process-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 28px;
    box-shadow: var(--shadow-soft);
}

  .process-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    font-size: 17px;
    margin-bottom: 14px;
  }

  .process-card:nth-child(2) .process-num {
    background: var(--accent);
  }

  .process-card h3 {
    color: #102A3B;
    font-size: 18px;
    margin-bottom: 8px;
  }

  .process-card p {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 0;
  }

  .faq-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    max-width: 920px;
    margin-left: auto;
    margin-right: auto;
  }

  .faq-item {
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 14px;
    padding: 8px 4px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-soft);
    transition: box-shadow 0.22s ease, border-color 0.22s ease;
  }

  .faq-item[open] {
    border-color: #B9D9EF;
    box-shadow: var(--shadow-hover);
  }

  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    list-style: none;
    padding: 16px 20px;
    font-weight: 700;
    color: #1B3448;
    font-size: 17px;
    line-height: 1.5;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-toggle {
    display: inline-flex;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #EAF4FC;
    color: var(--primary);
    transition: transform 0.25s ease, background 0.25s ease;
  }

  .faq-item[open] .faq-toggle {
    background: var(--accent-light);
    color: var(--accent);
    transform: rotate(180deg);
  }

  .faq-content {
    padding: 0 22px 20px;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.9;
  }

  .cta-section {
    position: relative;
    background: var(--footer-bg);
    padding: 84px 0;
    overflow: hidden;
  }

  .cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("/assets/images/backpic/back-1.webp");
    background-position: center;
    background-size: cover;
    opacity: 0.16;
  }

  .cta-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .cta-copy h2 {
    color: #fff;
    font-size: clamp(28px, 4vw, 42px);
    margin-bottom: 16px;
  }

  .cta-copy p {
    color: rgba(226, 240, 250, 0.85);
    font-size: 17px;
    max-width: 720px;
    margin-bottom: 0;
  }

  .cta-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
  }

  .contact-pill {
    min-width: 260px;
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 15px 20px;
    border-radius: 14px;
    color: #fff;
  }

  .contact-pill i {
    font-size: 18px;
    color: #AFE4DE;
  }

  .contact-pill strong {
    font-size: 17px;
    margin-bottom: 2px;
  }

  .contact-pill span {
    font-size: 13px;
    color: rgba(221, 237, 247, 0.72);
  }

  .site-footer {
    background: var(--footer-bg);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 72px;
    padding-bottom: 24px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
    margin-bottom: 48px;
  }

  .footer-brand p {
    color: #C5D9E6;
    font-size: 15px;
    line-height: 1.9;
    margin: 22px 0 0;
    max-width: 360px;
  }

  .footer-title {
    color: #fff;
    font-size: 17px;
    margin-bottom: 14px;
  }

  .footer-links li {
    margin-bottom: 10px;
  }

  .footer-links a {
    color: #BFD5E4;
    font-size: 15px;
    transition: color 0.2s ease, padding-left 0.2s ease;
  }

  .footer-links a:hover {
    color: #fff;
    padding-left: 5px;
  }

  .footer-contacts li {
    display: flex;
    gap: 10px;
    color: #C5D9E6;
    font-size: 15px;
    margin-bottom: 12px;
  }

  .footer-contacts i {
    width: 20px;
    color: var(--accent);
    margin-top: 5px;
  }

  .footer-bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 26px;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 22px;
    color: #A6C2D2;
    font-size: 14px;
  }

  .footer-bottom a {
    color: #D9ECF5;
  }

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

  @media (min-width: 640px) {
    .quick-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .system-list {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }

  @media (min-width: 992px) {
    .main-nav {
      display: flex;
    }

    .nav-toggle {
      display: none;
    }

    .nav-toggle-input:checked ~ .main-nav {
      position: static;
      max-height: none;
      background: transparent;
      border: 0;
      border-radius: 0;
      padding: 0;
      box-shadow: none;
      overflow: visible;
    }

    .nav-toggle-input:checked ~ .main-nav a {
      width: auto;
      padding: 0 18px;
      border-radius: 0;
    }

    .hero-inner {
      grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    }

    .system-card {
      grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    }

    .system-card:nth-child(even) .system-media {
      order: 2;
    }

    .plan-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .process-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .cta-inner {
      grid-template-columns: 1.1fr 0.9fr;
      align-items: center;
    }

    .footer-grid {
      grid-template-columns: 1.5fr 0.85fr 1fr 1.2fr;
    }
  }

  @media (min-width: 1200px) {
    .hero-copy h1 {
      font-size: 54px;
    }
  }

  @media (max-width: 768px) {
    .brand-name {
      font-size: 18px;
    }

    .hero-section {
      padding: 64px 0;
    }

    .hero-copy p {
      font-size: 16px;
    }

    .section {
      padding-top: 68px;
      padding-bottom: 68px;
    }

    .nav-action span {
      display: none;
    }

    .nav-action {
      width: 44px;
      padding: 0;
    }

    .nav-action i {
      margin-right: 0;
    }

    .cta-contact {
      flex-direction: column;
      align-items: stretch;
    }

    .contact-pill {
      min-width: 0;
      width: 100%;
    }
  }

  @media (max-width: 520px) {
    .header-inner {
      min-height: 68px;
      gap: 10px;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 9px;
      font-size: 17px;
    }

    .brand-name {
      font-size: 16px;
    }

    .main-nav a {
      font-size: 16px;
    }

    .hero-section {
      padding: 52px 0;
    }

    .hero-trust {
      grid-template-columns: repeat(1, minmax(0, 1fr));
    }

    .quick-card {
      padding: 22px;
    }

    .system-content {
      padding: 22px;
    }

    .plan-box {
      padding: 26px 20px;
    }

    .quota-note {
      padding: 16px;
    }
  }