/* roulang page: index */
:root {
      --bg: #F7F3EA;
      --panel: #FFFDF7;
      --text: #23211D;
      --muted: #6E675D;
      --primary: #0F766E;
      --primary-dark: #0B5F59;
      --accent: #C77D2B;
      --dark: #1D2523;
      --border: #E5DCCC;
      --soft-green: #ECFDF5;
      --soft-amber: #FFF7ED;
      --radius-xl: 28px;
      --radius-lg: 22px;
      --shadow: 0 18px 60px rgba(35, 33, 29, 0.08);
      --shadow-strong: 0 24px 80px rgba(35, 33, 29, 0.14);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(15,118,110,.10), transparent 28%),
        radial-gradient(circle at 88% 16%, rgba(199,125,43,.12), transparent 24%),
        linear-gradient(180deg, #F7F3EA 0%, #F4EFE4 100%);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    }

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

    button {
      cursor: pointer;
    }

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

    ::selection {
      color: #fff;
      background: var(--primary);
    }

    .site-shell {
      overflow: hidden;
      position: relative;
    }

    .site-shell::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: .42;
      background-image:
        linear-gradient(rgba(29,37,35,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(29,37,35,.045) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, black 0%, transparent 70%);
      z-index: -1;
    }

    .container-custom {
      width: min(100% - 32px, 1280px);
      margin-inline: auto;
    }

    .topbar {
      background: var(--dark);
      color: rgba(255,253,247,.86);
      font-size: 13px;
      border-bottom: 1px solid rgba(255,255,255,.08);
    }

    .topbar-inner {
      min-height: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .status-tags {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
    }

    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 10px;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 999px;
      background: rgba(255,255,255,.06);
      color: rgba(255,253,247,.82);
      white-space: nowrap;
    }

    .status-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #5EEAD4;
      box-shadow: 0 0 0 4px rgba(94,234,212,.12);
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 50;
      backdrop-filter: blur(18px);
      background: rgba(247,243,234,.86);
      border-bottom: 1px solid rgba(229,220,204,.78);
    }

    .nav-wrap {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-icon {
      width: 46px;
      height: 46px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
      background:
        linear-gradient(145deg, rgba(15,118,110,1), rgba(29,37,35,1));
      box-shadow: 0 12px 30px rgba(15,118,110,.24);
      flex: 0 0 auto;
    }

    .brand-title {
      font-weight: 760;
      letter-spacing: -.02em;
      line-height: 1.2;
      font-size: 16px;
      max-width: 310px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .brand-subtitle {
      font-size: 12px;
      color: var(--muted);
      line-height: 1.25;
      margin-top: 2px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 6px;
      border: 1px solid rgba(229,220,204,.85);
      background: rgba(255,253,247,.68);
      border-radius: 999px;
      box-shadow: 0 8px 28px rgba(35,33,29,.04);
    }

    .nav-link {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      padding: 0 16px;
      border-radius: 999px;
      color: var(--muted);
      font-weight: 650;
      font-size: 14px;
      white-space: nowrap;
    }

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

    .nav-link.active {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 10px 24px rgba(15,118,110,.22);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 20px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 720;
      font-size: 14px;
      line-height: 1;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
    }

    .btn-primary {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 14px 34px rgba(15,118,110,.20);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 18px 44px rgba(15,118,110,.28);
    }

    .btn-secondary {
      color: var(--text);
      background: rgba(255,253,247,.72);
      border-color: var(--border);
    }

    .btn-secondary:hover {
      color: var(--primary);
      border-color: rgba(15,118,110,.34);
      background: var(--soft-green);
      transform: translateY(-2px);
    }

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

    .btn:focus-visible,
    .nav-link:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    summary:focus-visible {
      outline: 3px solid rgba(15,118,110,.22);
      outline-offset: 3px;
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      border: 1px solid var(--border);
      background: var(--panel);
      color: var(--text);
    }

    .section {
      padding: 92px 0;
    }

    .section-tight {
      padding: 72px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      border: 1px solid rgba(15,118,110,.18);
      background: rgba(236,253,245,.72);
      color: var(--primary);
      font-weight: 750;
      font-size: 13px;
    }

    .eyebrow.amber {
      border-color: rgba(199,125,43,.22);
      background: var(--soft-amber);
      color: var(--accent);
    }

    .hero {
      padding: 72px 0 48px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.04fr) minmax(380px, .86fr);
      gap: 48px;
      align-items: center;
    }

    h1,
    h2,
    h3 {
      margin: 0;
      letter-spacing: -.035em;
      line-height: 1.15;
      color: var(--text);
    }

    h1 {
      font-size: clamp(34px, 5vw, 58px);
      margin-top: 20px;
      max-width: 860px;
    }

    h2 {
      font-size: clamp(28px, 3.2vw, 40px);
    }

    h3 {
      font-size: 21px;
    }

    .lead {
      margin-top: 20px;
      font-size: 17px;
      color: var(--muted);
      max-width: 760px;
    }

    .hero-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 30px;
    }

    .trust-row {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-top: 26px;
      color: var(--muted);
      font-size: 14px;
    }

    .trust-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .check-dot {
      width: 18px;
      height: 18px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--primary);
      font-size: 12px;
      flex: 0 0 auto;
    }

    .dashboard-card {
      position: relative;
      border-radius: var(--radius-xl);
      background:
        radial-gradient(circle at 20% 10%, rgba(94,234,212,.14), transparent 34%),
        linear-gradient(150deg, #1D2523, #151B1A);
      color: #FFFDF7;
      padding: 28px;
      border: 1px solid rgba(255,255,255,.10);
      box-shadow: 0 28px 80px rgba(29,37,35,.25);
      overflow: hidden;
    }

    .dashboard-card::before {
      content: "";
      position: absolute;
      inset: 0;
      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: 34px 34px;
      opacity: .36;
      pointer-events: none;
    }

    .dashboard-card > * {
      position: relative;
      z-index: 1;
    }

    .dashboard-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 24px;
    }

    .dashboard-title {
      font-weight: 760;
      color: #fff;
    }

    .live-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(236,253,245,.10);
      color: #A7F3D0;
      border: 1px solid rgba(167,243,208,.22);
      font-size: 12px;
      white-space: nowrap;
    }

    .metric-stack {
      display: grid;
      gap: 14px;
    }

    .metric-row {
      padding: 18px;
      border-radius: 20px;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.10);
    }

    .metric-top {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      gap: 12px;
      margin-bottom: 10px;
    }

    .metric-label {
      color: rgba(255,253,247,.72);
      font-size: 14px;
    }

    .metric-value {
      font-size: 30px;
      line-height: 1;
      font-weight: 820;
      letter-spacing: -.04em;
      color: #fff;
      font-variant-numeric: tabular-nums;
    }

    .progress {
      height: 8px;
      border-radius: 999px;
      background: rgba(255,255,255,.12);
      overflow: hidden;
    }

    .progress span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, #5EEAD4, #0F766E);
    }

    .risk-scale {
      margin-top: 22px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,.10);
    }

    .risk-bars {
      display: grid;
      grid-template-columns: 1fr 1.4fr .7fr;
      gap: 8px;
      margin-top: 10px;
    }

    .risk-bars span {
      height: 10px;
      border-radius: 999px;
    }

    .risk-low { background: #5EEAD4; }
    .risk-mid { background: #F59E0B; }
    .risk-high { background: #C77D2B; }

    .timeline-mini {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 10px;
      margin-top: 20px;
    }

    .timeline-mini div {
      padding: 12px 10px;
      border-radius: 14px;
      background: rgba(255,255,255,.055);
      color: rgba(255,253,247,.76);
      border: 1px solid rgba(255,255,255,.08);
      font-size: 12px;
      text-align: center;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 28px;
      margin-bottom: 34px;
    }

    .section-head p {
      max-width: 660px;
      color: var(--muted);
      margin: 12px 0 0;
    }

    .stat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .stat-card,
    .card {
      position: relative;
      background: var(--panel);
      border: 1px solid var(--border);
      border-radius: 24px;
      box-shadow: 0 12px 40px rgba(35,33,29,.045);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background .22s ease;
    }

    .stat-card {
      padding: 24px;
      overflow: hidden;
    }

    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 18px;
      right: 18px;
      height: 3px;
      background: var(--primary);
      border-radius: 0 0 999px 999px;
      opacity: 0;
      transform: scaleX(.5);
      transition: opacity .22s ease, transform .22s ease;
    }

    .stat-card:hover,
    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow);
      border-color: rgba(15,118,110,.28);
    }

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

    .stat-num {
      font-size: 42px;
      font-weight: 850;
      letter-spacing: -.05em;
      line-height: 1;
      color: var(--primary);
      font-variant-numeric: tabular-nums;
      margin: 16px 0 10px;
    }

    .stat-card p {
      color: var(--muted);
      margin: 10px 0 0;
      font-size: 14px;
    }

    .trend {
      margin-top: 18px;
      height: 34px;
      display: flex;
      align-items: end;
      gap: 5px;
    }

    .trend i {
      flex: 1;
      border-radius: 8px 8px 2px 2px;
      background: linear-gradient(180deg, rgba(15,118,110,.58), rgba(15,118,110,.14));
      min-height: 10px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      width: fit-content;
      gap: 6px;
      padding: 6px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 740;
      white-space: nowrap;
    }

    .badge.green {
      background: var(--soft-green);
      color: var(--primary);
    }

    .badge.amber {
      background: var(--soft-amber);
      color: var(--accent);
    }

    .badge.neutral {
      background: #F1E9DC;
      color: var(--muted);
    }

    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 18px;
    }

    .matrix-card {
      padding: 26px;
      min-height: 220px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .matrix-card.large {
      grid-column: span 6;
    }

    .matrix-card.medium {
      grid-column: span 3;
    }

    .matrix-card.wide {
      grid-column: span 4;
      min-height: 190px;
    }

    .matrix-icon {
      width: 48px;
      height: 48px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: var(--soft-green);
      color: var(--primary);
      margin-bottom: 18px;
    }

    .matrix-card p {
      color: var(--muted);
      margin: 12px 0 18px;
      font-size: 15px;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: auto;
    }

    .category-strip {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 18px;
      align-items: stretch;
    }

    .category-card {
      padding: 30px;
      border-radius: var(--radius-xl);
      background: linear-gradient(145deg, rgba(255,253,247,.94), rgba(236,253,245,.68));
      border: 1px solid rgba(15,118,110,.18);
      box-shadow: var(--shadow);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .category-card p {
      color: var(--muted);
      margin: 12px 0 0;
      max-width: 720px;
    }

    .compare-wrap {
      padding: 34px;
      border-radius: var(--radius-xl);
      background: rgba(255,253,247,.54);
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 18px;
      align-items: center;
    }

    .compare-card {
      padding: 26px;
      border-radius: 24px;
      border: 1px solid var(--border);
    }

    .compare-card.before {
      background: var(--soft-amber);
      border-color: rgba(199,125,43,.22);
    }

    .compare-card.after {
      background: var(--soft-green);
      border-color: rgba(15,118,110,.22);
    }

    .compare-card ul,
    .clean-list {
      list-style: none;
      padding: 0;
      margin: 18px 0 0;
      display: grid;
      gap: 12px;
    }

    .compare-card li,
    .clean-list li {
      position: relative;
      padding-left: 28px;
      color: var(--muted);
    }

    .compare-card li::before,
    .clean-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: .62em;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 4px rgba(15,118,110,.12);
    }

    .compare-card.before li::before {
      background: var(--accent);
      box-shadow: 0 0 0 4px rgba(199,125,43,.12);
    }

    .arrow-node {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--dark);
      color: #fff;
      box-shadow: 0 14px 36px rgba(29,37,35,.20);
    }

    .process {
      position: relative;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .process::before {
      content: "";
      position: absolute;
      left: 8%;
      right: 8%;
      top: 36px;
      height: 2px;
      background: linear-gradient(90deg, rgba(15,118,110,.16), rgba(15,118,110,.62), rgba(199,125,43,.28));
      z-index: 0;
    }

    .step {
      position: relative;
      z-index: 1;
      padding: 22px;
      border-radius: 24px;
      border: 1px solid var(--border);
      background: rgba(255,253,247,.82);
    }

    .step-num {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--primary);
      font-weight: 820;
      margin-bottom: 18px;
      box-shadow: 0 12px 28px rgba(15,118,110,.18);
    }

    .step p {
      color: var(--muted);
      margin: 10px 0 0;
      font-size: 15px;
    }

    .dark-band {
      border-radius: var(--radius-xl);
      padding: 40px;
      background:
        radial-gradient(circle at 86% 20%, rgba(94,234,212,.15), transparent 28%),
        linear-gradient(145deg, #1D2523, #141918);
      color: #FFFDF7;
      border: 1px solid rgba(255,255,255,.10);
      box-shadow: 0 26px 80px rgba(29,37,35,.18);
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
    }

    .dark-band h2 {
      color: #fff;
    }

    .dark-band p {
      color: rgba(255,253,247,.68);
      margin: 12px 0 0;
      max-width: 760px;
    }

    .dark-points {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-top: 20px;
    }

    .dark-points span {
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.10);
      color: rgba(255,253,247,.80);
      font-size: 13px;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .78fr 1.22fr;
      gap: 34px;
      align-items: start;
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    details.faq-item {
      border: 1px solid var(--border);
      background: var(--panel);
      border-radius: 20px;
      overflow: hidden;
      transition: border-color .2s ease, box-shadow .2s ease;
    }

    details.faq-item[open] {
      border-color: rgba(15,118,110,.40);
      box-shadow: 0 16px 44px rgba(15,118,110,.08);
    }

    .faq-item summary {
      min-height: 62px;
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      cursor: pointer;
      font-weight: 760;
      list-style: none;
    }

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

    .faq-item summary::after {
      content: "+";
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--soft-green);
      color: var(--primary);
      flex: 0 0 auto;
      font-weight: 800;
    }

    .faq-item[open] summary::after {
      content: "−";
      background: var(--primary);
      color: #fff;
    }

    .faq-answer {
      padding: 0 22px 20px;
      color: var(--muted);
      margin: 0;
    }

    .form-zone {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 32px;
      align-items: stretch;
    }

    .form-intro {
      padding: 34px;
      border-radius: var(--radius-xl);
      background: var(--dark);
      color: #FFFDF7;
      border: 1px solid rgba(255,255,255,.10);
      box-shadow: var(--shadow);
    }

    .form-intro h2 {
      color: #fff;
    }

    .form-intro p {
      color: rgba(255,253,247,.70);
      margin: 16px 0 0;
    }

    .form-card {
      padding: 30px;
      border-radius: var(--radius-xl);
      background: var(--panel);
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

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

    .field {
      display: grid;
      gap: 7px;
    }

    .field.full {
      grid-column: 1 / -1;
    }

    .field label {
      font-size: 14px;
      font-weight: 720;
      color: var(--text);
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      min-height: 52px;
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 12px 14px;
      background: #fff;
      color: var(--text);
      outline: none;
      transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .field textarea {
      min-height: 122px;
      resize: vertical;
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: rgba(15,118,110,.68);
      box-shadow: 0 0 0 4px rgba(15,118,110,.10);
      background: #fffefb;
    }

    .privacy-note {
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 13px;
    }

    .footer {
      background: var(--dark);
      color: rgba(255,253,247,.80);
      padding: 64px 0 28px;
      margin-top: 56px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr 1fr;
      gap: 40px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255,255,255,.10);
    }

    .footer .brand-title,
    .footer h3 {
      color: #fff;
    }

    .footer .brand-subtitle,
    .footer p,
    .footer li {
      color: rgba(255,253,247,.66);
    }

    .footer h3 {
      font-size: 17px;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .footer-links a:hover {
      color: #A7F3D0;
    }

    .copyright {
      padding-top: 22px;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      color: rgba(255,253,247,.52);
      font-size: 13px;
    }

    .mobile-menu {
      display: none;
    }

    @media (max-width: 1100px) {
      .hero-grid,
      .category-strip,
      .faq-grid,
      .form-zone {
        grid-template-columns: 1fr;
      }

      .dashboard-card {
        max-width: 720px;
      }

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

      .matrix-card.large,
      .matrix-card.medium,
      .matrix-card.wide {
        grid-column: span 6;
      }

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

      .arrow-node {
        margin-inline: auto;
        transform: rotate(90deg);
      }

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

      .process::before {
        display: none;
      }

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

    @media (max-width: 860px) {
      .nav-links,
      .header-actions .btn-secondary,
      .header-actions .btn-primary {
        display: none;
      }

      .menu-toggle {
        display: grid;
        place-items: center;
      }

      .nav-wrap {
        min-height: 68px;
      }

      .brand-title {
        max-width: 210px;
      }

      .mobile-menu {
        display: none;
        position: absolute;
        left: 16px;
        right: 16px;
        top: calc(100% + 8px);
        padding: 16px;
        border-radius: 22px;
        background: rgba(255,253,247,.98);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-strong);
      }

      .mobile-menu.open {
        display: grid;
        gap: 10px;
      }

      .mobile-menu .nav-link {
        justify-content: flex-start;
        border-radius: 14px;
        min-height: 46px;
      }

      .mobile-menu .btn {
        width: 100%;
        margin-top: 6px;
      }

      .section {
        padding: 68px 0;
      }

      .hero {
        padding: 48px 0 34px;
      }

      .topbar-inner {
        justify-content: center;
        text-align: center;
      }

      .status-tags {
        display: none;
      }

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

      .matrix-card.large,
      .matrix-card.medium,
      .matrix-card.wide {
        grid-column: span 1;
      }

      .dark-band {
        grid-template-columns: 1fr;
        padding: 28px;
      }

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

    @media (max-width: 620px) {
      .container-custom {
        width: min(100% - 24px, 1280px);
      }

      .brand-icon {
        width: 42px;
        height: 42px;
        border-radius: 14px;
      }

      .brand-title {
        max-width: 178px;
        font-size: 14px;
      }

      .brand-subtitle {
        font-size: 11px;
      }

      .hero-actions,
      .category-card,
      .section-head {
        align-items: stretch;
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .stat-grid,
      .process,
      .form-grid {
        grid-template-columns: 1fr;
      }

      .timeline-mini {
        grid-template-columns: 1fr 1fr;
      }

      .compare-wrap,
      .form-card,
      .form-intro,
      .dashboard-card {
        padding: 22px;
      }

      .metric-value {
        font-size: 26px;
      }

      .stat-num {
        font-size: 36px;
      }

      .copyright {
        display: grid;
      }
    }

/* roulang page: category1 */
:root{
      --bg:#F7F3EA;
      --surface:#FFFDF7;
      --surface-2:#F2EADD;
      --text:#23211D;
      --muted:#6E675D;
      --primary:#0F766E;
      --primary-dark:#0B5F59;
      --primary-soft:#ECFDF5;
      --amber:#C77D2B;
      --amber-soft:#FFF7ED;
      --dark:#1D2523;
      --dark-2:#111816;
      --border:#E5DCCC;
      --white-soft:#FBF7EF;
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --shadow:0 18px 60px rgba(35,33,29,.08);
      --shadow-hover:0 24px 70px rgba(15,118,110,.14);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(15,118,110,.10), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(199,125,43,.12), transparent 24%),
        linear-gradient(180deg,var(--bg),#F4EEE2 62%,var(--bg));
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img,svg{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(15,118,110,.18)}
    .container-custom{
      width:min(var(--container), calc(100% - 40px));
      margin-inline:auto;
    }
    .section{padding:86px 0}
    .section-tight{padding:58px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border:1px solid rgba(15,118,110,.18);
      border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary);
      font-size:13px;
      font-weight:700;
      letter-spacing:.02em;
    }
    .eyebrow:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:999px;
      background:var(--primary);
      box-shadow:0 0 0 5px rgba(15,118,110,.10);
    }
    .topbar{
      background:var(--dark);
      color:#EDE7DA;
      font-size:13px;
      position:relative;
      z-index:50;
    }
    .topbar-inner{
      min-height:40px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      white-space:nowrap;
    }
    .status-tags{display:flex;align-items:center;gap:8px;color:#D7D0C3}
    .status-pill{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:4px 9px;
      border:1px solid rgba(255,255,255,.12);
      border-radius:999px;
      background:rgba(255,255,255,.05);
      font-size:12px;
    }
    .status-dot{
      width:7px;
      height:7px;
      border-radius:50%;
      background:#34D399;
      box-shadow:0 0 0 4px rgba(52,211,153,.14);
    }
    .main-header{
      position:sticky;
      top:0;
      z-index:45;
      border-bottom:1px solid rgba(229,220,204,.72);
      background:rgba(247,243,234,.86);
      backdrop-filter:blur(18px);
    }
    .nav-wrap{
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
      position:relative;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-icon{
      width:44px;
      height:44px;
      flex:0 0 44px;
      display:grid;
      place-items:center;
      border-radius:16px;
      color:var(--primary);
      background:linear-gradient(145deg,#F9F3E8,#ECFDF5);
      border:1px solid rgba(15,118,110,.16);
      box-shadow:0 12px 26px rgba(15,118,110,.10);
    }
    .brand-title{
      display:block;
      color:var(--text);
      font-size:16px;
      font-weight:800;
      line-height:1.2;
      max-width:340px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-subtitle{
      display:block;
      color:var(--muted);
      font-size:12px;
      line-height:1.25;
      margin-top:3px;
    }
    .nav-links{display:flex;align-items:center;gap:8px}
    .nav-link{
      display:inline-flex;
      align-items:center;
      min-height:42px;
      padding:0 14px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      font-weight:700;
      transition:all .2s ease;
    }
    .nav-link:hover{
      color:var(--primary);
      background:rgba(15,118,110,.08);
    }
    .nav-link.active{
      color:var(--primary);
      background:var(--primary-soft);
      box-shadow:inset 0 0 0 1px rgba(15,118,110,.14);
    }
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-size:14px;
      font-weight:800;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      outline:none;
      white-space:nowrap;
    }
    .btn:focus-visible{
      box-shadow:0 0 0 4px rgba(15,118,110,.18), 0 10px 28px rgba(15,118,110,.16);
    }
    .btn-primary{
      color:#fff;
      background:var(--primary);
      box-shadow:0 13px 28px rgba(15,118,110,.18);
    }
    .btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 18px 36px rgba(15,118,110,.24)}
    .btn-primary:active{transform:translateY(0)}
    .btn-secondary{
      color:var(--text);
      background:rgba(255,253,247,.75);
      border-color:var(--border);
    }
    .btn-secondary:hover{color:var(--primary);background:var(--primary-soft);border-color:rgba(15,118,110,.35);transform:translateY(-1px)}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      place-items:center;
      border-radius:999px;
      border:1px solid var(--border);
      color:var(--text);
      background:var(--surface);
      transition:all .2s ease;
    }
    .menu-toggle:hover{color:var(--primary);border-color:rgba(15,118,110,.28)}
    .mobile-menu{
      display:none;
      position:absolute;
      top:72px;
      left:0;
      right:0;
      padding:16px;
      border:1px solid var(--border);
      border-radius:24px;
      background:rgba(255,253,247,.98);
      box-shadow:var(--shadow);
    }
    .mobile-menu.open{display:grid;gap:10px}
    .hero{
      position:relative;
      padding:72px 0 42px;
      overflow:hidden;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0;
      background-image:
        linear-gradient(rgba(29,37,35,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(29,37,35,.045) 1px, transparent 1px);
      background-size:38px 38px;
      mask-image:linear-gradient(180deg,rgba(0,0,0,.72),transparent 82%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:42px;
      align-items:center;
    }
    h1,h2,h3{line-height:1.16;margin:0;color:var(--text)}
    .hero h1{
      margin-top:18px;
      font-size:clamp(32px,5vw,56px);
      letter-spacing:-.035em;
      max-width:760px;
    }
    .hero-lead{
      margin-top:20px;
      max-width:760px;
      color:var(--muted);
      font-size:17px;
      line-height:1.9;
    }
    .hero-actions{
      margin-top:30px;
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .trust-row{
      margin-top:24px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border-radius:999px;
      font-size:13px;
      font-weight:700;
      border:1px solid var(--border);
      background:rgba(255,253,247,.72);
      color:var(--muted);
    }
    .badge.safe{background:var(--primary-soft);color:var(--primary);border-color:rgba(15,118,110,.18)}
    .badge.warn{background:var(--amber-soft);color:var(--amber);border-color:rgba(199,125,43,.20)}
    .stat-panel{
      border-radius:var(--radius-xl);
      background:
        linear-gradient(180deg,rgba(255,255,255,.06),transparent),
        var(--dark);
      color:#F8F1E5;
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 28px 80px rgba(29,37,35,.22);
      padding:26px;
      position:relative;
      overflow:hidden;
    }
    .stat-panel:before{
      content:"";
      position:absolute;
      width:220px;
      height:220px;
      right:-70px;
      top:-70px;
      border-radius:50%;
      background:rgba(15,118,110,.25);
      filter:blur(8px);
    }
    .panel-head,.panel-row,.risk-bar,.mini-metrics{position:relative}
    .panel-head{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:14px;
      padding-bottom:18px;
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .panel-title{font-size:16px;font-weight:800}
    .panel-note{font-size:12px;color:#BDB5A8}
    .mini-metrics{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:20px;
    }
    .mini-metric{
      padding:15px;
      border-radius:18px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.10);
    }
    .mini-metric strong{display:block;font-size:26px;line-height:1;color:#fff}
    .mini-metric span{display:block;margin-top:8px;font-size:12px;color:#BDB5A8}
    .risk-bar{
      margin-top:20px;
      padding:18px;
      border-radius:20px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.10);
    }
    .risk-track{
      height:10px;
      display:grid;
      grid-template-columns:52% 30% 18%;
      gap:4px;
      margin-top:12px;
    }
    .risk-track span{border-radius:999px}
    .risk-track span:nth-child(1){background:#34D399}
    .risk-track span:nth-child(2){background:#F59E0B}
    .risk-track span:nth-child(3){background:#C77D2B}
    .scenario-grid{
      display:grid;
      grid-template-columns:280px 1fr;
      gap:26px;
      align-items:start;
    }
    .side-nav{
      position:sticky;
      top:102px;
      padding:18px;
      border:1px solid var(--border);
      border-radius:24px;
      background:rgba(255,253,247,.86);
      box-shadow:0 12px 36px rgba(35,33,29,.06);
    }
    .side-nav h2{
      font-size:16px;
      margin-bottom:12px;
    }
    .side-link{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      min-height:44px;
      padding:0 13px;
      border-radius:14px;
      color:var(--muted);
      font-size:14px;
      font-weight:750;
      transition:all .2s ease;
    }
    .side-link:hover,.side-link.active{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .content-area{min-width:0}
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:26px;
    }
    .section-head h2{
      font-size:clamp(26px,3vw,38px);
      letter-spacing:-.025em;
    }
    .section-head p{
      margin:12px 0 0;
      color:var(--muted);
      max-width:680px;
    }
    .notice-bar{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:16px 18px;
      margin-bottom:18px;
      border-radius:20px;
      background:rgba(236,253,245,.72);
      border:1px solid rgba(15,118,110,.16);
      color:var(--muted);
      font-size:14px;
    }
    .topic-list{display:grid;gap:16px}
    .topic-card{
      position:relative;
      display:grid;
      grid-template-columns:1fr auto;
      gap:18px;
      padding:24px;
      border:1px solid var(--border);
      border-radius:24px;
      background:var(--surface);
      box-shadow:0 12px 38px rgba(35,33,29,.055);
      transition:all .22s ease;
      overflow:hidden;
    }
    .topic-card:before{
      content:"";
      position:absolute;
      left:0;
      top:20px;
      bottom:20px;
      width:0;
      border-radius:0 999px 999px 0;
      background:var(--primary);
      transition:width .22s ease;
    }
    .topic-card:hover{
      transform:translateY(-3px);
      border-color:rgba(15,118,110,.32);
      background:linear-gradient(90deg,rgba(236,253,245,.62),var(--surface) 48%);
      box-shadow:var(--shadow-hover);
    }
    .topic-card:hover:before{width:5px}
    .topic-card h3{
      margin-top:10px;
      font-size:22px;
      letter-spacing:-.01em;
    }
    .topic-card p{
      margin:10px 0 0;
      color:var(--muted);
      max-width:760px;
    }
    .topic-meta{
      margin-top:16px;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .topic-cta{
      align-self:center;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      font-weight:850;
      white-space:nowrap;
    }
    .topic-cta span{transition:transform .2s ease}
    .topic-card:hover .topic-cta span{transform:translateX(4px)}
    .deep-banner{
      display:grid;
      grid-template-columns:1fr auto;
      gap:24px;
      align-items:center;
      padding:34px;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 82% 15%, rgba(15,118,110,.34), transparent 28%),
        linear-gradient(135deg,var(--dark),var(--dark-2));
      color:#F8F1E5;
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 28px 80px rgba(29,37,35,.16);
    }
    .deep-banner h2{color:#fff;font-size:clamp(26px,3vw,38px)}
    .deep-banner p{margin:12px 0 0;color:#CFC7BA;max-width:720px}
    .banner-tags{
      margin-top:18px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .banner-tags span{
      padding:7px 11px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.06);
      color:#E8E0D3;
      font-size:13px;
      font-weight:750;
    }
    .process-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      counter-reset:step;
    }
    .process-card{
      position:relative;
      padding:24px;
      border:1px solid var(--border);
      border-radius:24px;
      background:var(--surface);
      transition:all .2s ease;
    }
    .process-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(15,118,110,.28)}
    .process-card:before{
      counter-increment:step;
      content:"0" counter(step);
      display:grid;
      place-items:center;
      width:42px;
      height:42px;
      margin-bottom:16px;
      border-radius:999px;
      background:var(--primary);
      color:#fff;
      font-weight:900;
    }
    .process-card h3{font-size:19px}
    .process-card p{margin:10px 0 0;color:var(--muted);font-size:15px}
    .faq-wrap{
      max-width:900px;
      margin:0 auto;
      display:grid;
      gap:12px;
    }
    .faq-item{
      border:1px solid var(--border);
      border-radius:20px;
      background:rgba(255,253,247,.82);
      overflow:hidden;
      transition:all .2s ease;
    }
    .faq-item[open]{
      border-color:rgba(15,118,110,.38);
      background:var(--surface);
      box-shadow:0 14px 44px rgba(15,118,110,.08);
    }
    .faq-item summary{
      min-height:64px;
      padding:0 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      list-style:none;
      cursor:pointer;
      color:var(--text);
      font-weight:850;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      width:28px;
      height:28px;
      display:grid;
      place-items:center;
      border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary);
      flex:0 0 28px;
      font-weight:900;
    }
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{
      margin:0;
      padding:0 20px 20px;
      color:var(--muted);
    }
    .cta-box{
      display:grid;
      grid-template-columns:1fr auto;
      gap:24px;
      align-items:center;
      padding:34px;
      border:1px solid rgba(15,118,110,.18);
      border-radius:var(--radius-xl);
      background:
        linear-gradient(135deg,rgba(236,253,245,.88),rgba(255,253,247,.94)),
        var(--surface);
      box-shadow:var(--shadow);
    }
    .cta-box h2{font-size:clamp(26px,3vw,40px)}
    .cta-box p{margin:12px 0 0;color:var(--muted);max-width:760px}
    .footer{
      margin-top:50px;
      padding:58px 0 28px;
      background:var(--dark);
      color:#D8D0C4;
    }
    .footer .brand-title{color:#fff}
    .footer .brand-subtitle{color:#BDB5A8}
    .footer .brand-icon{
      color:#A7F3D0;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.10);
      box-shadow:none;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.6fr .7fr 1fr;
      gap:36px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .footer h3{
      color:#fff;
      font-size:16px;
      margin-bottom:14px;
    }
    .footer p{color:#BDB5A8}
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:9px;
      color:#BDB5A8;
      font-size:14px;
    }
    .footer-links a{transition:color .2s ease}
    .footer-links a:hover{color:#A7F3D0}
    .copyright{
      padding-top:22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      color:#AFA79B;
      font-size:13px;
    }
    @media (max-width:1024px){
      .container-custom{width:min(100% - 32px,var(--container))}
      .nav-links,.header-actions .btn-secondary,.header-actions .btn-primary{display:none}
      .menu-toggle{display:grid}
      .hero-grid{grid-template-columns:1fr}
      .scenario-grid{grid-template-columns:1fr}
      .side-nav{
        position:relative;
        top:auto;
        overflow:auto;
        display:flex;
        gap:8px;
        padding:12px;
      }
      .side-nav h2{display:none}
      .side-link{flex:0 0 auto;border:1px solid var(--border);background:var(--surface)}
      .process-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid > div:first-child{grid-column:1/-1}
    }
    @media (max-width:768px){
      .topbar-inner{justify-content:center}
      .status-tags{display:none}
      .brand-title{max-width:210px;font-size:14px}
      .hero{padding-top:48px}
      .section{padding:62px 0}
      .mini-metrics{grid-template-columns:1fr}
      .section-head{display:block}
      .notice-bar{display:block}
      .topic-card{grid-template-columns:1fr;padding:21px}
      .deep-banner,.cta-box{grid-template-columns:1fr;padding:26px}
      .process-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:grid}
    }
    @media (max-width:520px){
      .container-custom{width:min(100% - 24px,var(--container))}
      .topbar{font-size:12px}
      .nav-wrap{min-height:70px}
      .brand-icon{width:40px;height:40px;flex-basis:40px}
      .hero-actions .btn{width:100%}
      .trust-row{display:grid}
      .mobile-menu{top:66px}
      .topic-meta{gap:6px}
      .badge{font-size:12px}
      .footer{margin-top:28px}
    }