/* roulang page: index */
:root {
      --bg: #ffffff;
      --bg-soft: #f7faf8;
      --bg-mint: #ecfdf3;
      --bg-warm: #fffaf0;
      --text: #111827;
      --muted: #5f6b66;
      --light-text: #7b8781;
      --border: #e5ece8;
      --border-strong: #c7ded2;
      --primary: #16a34a;
      --primary-dark: #11813b;
      --primary-soft: #dcfce7;
      --amber: #f59e0b;
      --danger-soft: #fff7ed;
      --shadow: 0 8px 24px rgba(17, 24, 39, .06);
      --shadow-hover: 0 14px 34px rgba(17, 24, 39, .10);
      --radius: 8px;
      --radius-sm: 6px;
      --container: 1200px;
      --section: 72px;
      --font: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      background: var(--bg);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

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

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

    button {
      border: 0;
      cursor: pointer;
    }

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

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 30;
      background: rgba(255, 255, 255, .94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
    }

    .topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 16px 0 10px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-width: 0;
      font-weight: 800;
      letter-spacing: 0;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: var(--radius-sm);
      background: var(--primary);
      color: #fff;
      display: grid;
      place-items: center;
      box-shadow: 0 8px 18px rgba(22, 163, 74, .22);
      flex: 0 0 auto;
    }

    .brand-mark::before {
      content: "✓";
      font-size: 18px;
      font-weight: 900;
    }

    .brand-text {
      font-size: 17px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .header-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 0 16px;
      border-radius: var(--radius-sm);
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      box-shadow: 0 8px 18px rgba(22, 163, 74, .16);
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
      white-space: nowrap;
    }

    .header-cta:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: var(--shadow-hover);
    }

    .seg-nav {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 0 0 14px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .seg-nav::-webkit-scrollbar {
      display: none;
    }

    .nav-chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 36px;
      padding: 0 15px;
      border: 1px solid var(--border);
      border-radius: 999px;
      background: #fff;
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
      transition: border-color .2s ease, color .2s ease, background .2s ease;
    }

    .nav-chip:hover,
    .nav-chip:focus-visible {
      border-color: var(--primary);
      color: var(--primary-dark);
      background: var(--bg-mint);
      outline: none;
    }

    .nav-chip.active {
      border-color: var(--primary);
      color: var(--primary-dark);
      background: var(--primary-soft);
    }

    main {
      overflow: hidden;
    }

    section {
      padding: var(--section) 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 28px;
    }

    .section-head h2 {
      margin: 0;
      font-size: clamp(24px, 3vw, 30px);
      line-height: 1.25;
      letter-spacing: 0;
    }

    .section-head p {
      max-width: 620px;
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 15px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 800;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--primary);
      box-shadow: 0 0 0 5px var(--primary-soft);
    }

    .btn-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 0 18px;
      border-radius: var(--radius-sm);
      font-weight: 800;
      font-size: 15px;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 10px 22px rgba(22, 163, 74, .18);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: var(--shadow-hover);
    }

    .btn-secondary {
      background: #fff;
      color: var(--primary-dark);
      border: 1px solid var(--primary);
    }

    .btn-secondary:hover {
      background: var(--bg-mint);
      transform: translateY(-1px);
    }

    .btn-ghost {
      background: #f3f7f5;
      color: var(--text);
      border: 1px solid var(--border);
    }

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

    .hero {
      position: relative;
      padding: 42px 0 30px;
      background:
        linear-gradient(180deg, #f7faf8 0%, #fff 70%),
        radial-gradient(circle at 12% 20%, rgba(22, 163, 74, .12), transparent 32%);
      border-bottom: 1px solid var(--border);
    }

    .promo-strip {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 22px;
      padding: 10px 14px;
      border: 1px solid #fde7bb;
      border-radius: var(--radius);
      background: var(--bg-warm);
      color: #7c4a03;
      font-size: 14px;
      font-weight: 700;
    }

    .promo-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 10px;
      border-radius: 999px;
      background: #fff;
      color: #9a5d00;
      border: 1px solid #fbd38d;
      white-space: nowrap;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(420px, .98fr);
      gap: 38px;
      align-items: center;
    }

    .hero h1 {
      margin: 0;
      font-size: clamp(30px, 4vw, 44px);
      line-height: 1.18;
      letter-spacing: 0;
    }

    .hero-desc {
      max-width: 720px;
      margin: 18px 0 22px;
      color: var(--muted);
      font-size: 16px;
    }

    .trust-row {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      margin-top: 22px;
    }

    .trust-item {
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
    }

    .trust-item strong {
      display: block;
      color: var(--primary-dark);
      font-size: 18px;
      line-height: 1.2;
    }

    .trust-item span {
      display: block;
      margin-top: 4px;
      color: var(--light-text);
      font-size: 13px;
    }

    .stage {
      position: relative;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .stage-bar {
      display: flex;
      align-items: center;
      gap: 7px;
      height: 42px;
      padding: 0 14px;
      border-bottom: 1px solid var(--border);
      background: #fbfdfc;
    }

    .dot {
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: #d1d5db;
    }

    .dot.green {
      background: var(--primary);
    }

    .stage-body {
      padding: 18px;
    }

    .stage-top {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 14px;
      align-items: start;
      margin-bottom: 16px;
    }

    .stage-title {
      margin: 0;
      font-weight: 900;
      font-size: 18px;
    }

    .status-pill,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      width: fit-content;
      min-height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      background: var(--bg-mint);
      color: var(--primary-dark);
      border: 1px solid var(--border-strong);
      font-size: 12px;
      font-weight: 800;
      white-space: nowrap;
    }

    .stage-list {
      display: grid;
      gap: 10px;
      margin: 0 0 16px;
      padding: 0;
      list-style: none;
    }

    .stage-list li {
      display: grid;
      grid-template-columns: 26px 1fr auto;
      gap: 10px;
      align-items: center;
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      background: #fff;
    }

    .check {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 900;
    }

    .stage-list b {
      display: block;
      font-size: 14px;
      line-height: 1.25;
    }

    .stage-list small {
      color: var(--light-text);
    }

    .stage-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .mini-chip {
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid var(--border);
      color: var(--muted);
      background: #fff;
      font-size: 12px;
      font-weight: 700;
    }

    .mini-chip.ok {
      color: var(--primary-dark);
      background: var(--bg-mint);
      border-color: var(--border-strong);
    }

    .compare {
      background: #fff;
    }

    .pricing-table {
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      background: #fff;
    }

    .pricing-row {
      display: grid;
      grid-template-columns: 1.1fr repeat(3, 1fr);
      border-bottom: 1px solid var(--border);
    }

    .pricing-row:last-child {
      border-bottom: 0;
    }

    .pricing-cell {
      min-height: 62px;
      padding: 16px;
      border-right: 1px solid var(--border);
      display: flex;
      align-items: center;
      color: var(--muted);
      font-size: 14px;
    }

    .pricing-cell:last-child {
      border-right: 0;
    }

    .pricing-head .pricing-cell {
      background: #fbfdfc;
      color: var(--text);
      font-weight: 900;
    }

    .pricing-cell.feature {
      color: var(--text);
      font-weight: 800;
      background: #fcfefd;
    }

    .recommended {
      position: relative;
      background: var(--bg-mint) !important;
      color: var(--primary-dark) !important;
      font-weight: 900;
    }

    .recommended::after {
      content: "推荐";
      margin-left: 8px;
      padding: 2px 7px;
      border-radius: 999px;
      background: var(--primary);
      color: #fff;
      font-size: 11px;
    }

    .mobile-plans {
      display: none;
    }

    .plan-card,
    .card,
    .preview-card,
    .review-card,
    .material-card {
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: var(--shadow);
      transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    }

    .plan-card:hover,
    .card:hover,
    .preview-card:hover,
    .review-card:hover,
    .material-card:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

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

    .highlight-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .card {
      padding: 20px;
    }

    .icon-box {
      width: 40px;
      height: 40px;
      display: grid;
      place-items: center;
      margin-bottom: 14px;
      border-radius: var(--radius-sm);
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 900;
      font-size: 18px;
    }

    .card h3,
    .preview-card h3,
    .material-card h3,
    .review-card h3 {
      margin: 0 0 8px;
      font-size: 19px;
      line-height: 1.35;
    }

    .card p,
    .preview-card p,
    .material-card p,
    .review-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .materials {
      background: #fff;
    }

    .material-layout {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 18px;
      align-items: stretch;
    }

    .material-card {
      padding: 22px;
      min-height: 100%;
    }

    .material-card.featured {
      background: linear-gradient(180deg, #fff 0%, #f2fbf5 100%);
    }

    .material-list {
      display: grid;
      gap: 12px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }

    .material-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      background: #fff;
      color: var(--muted);
      font-size: 14px;
    }

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

    .preview-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr .85fr;
      gap: 16px;
    }

    .preview-card {
      overflow: hidden;
    }

    .preview-art {
      height: 130px;
      background:
        linear-gradient(135deg, rgba(22, 163, 74, .14), rgba(245, 158, 11, .10)),
        repeating-linear-gradient(90deg, #f8fbf9 0 18px, #eef7f1 18px 20px);
      border-bottom: 1px solid var(--border);
      position: relative;
    }

    .preview-art::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 18px;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      background: rgba(255,255,255,.85);
    }

    .preview-body {
      padding: 18px;
    }

    .tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 12px 0;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 26px;
      padding: 0 9px;
      border-radius: 999px;
      border: 1px solid var(--border);
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
      background: #fff;
    }

    .tag.green {
      color: var(--primary-dark);
      background: var(--bg-mint);
      border-color: var(--border-strong);
    }

    .meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
      margin-top: 14px;
      color: var(--light-text);
      font-size: 13px;
    }

    .insights {
      background: #fff;
    }

    .insight-grid {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 18px;
    }

    .quote-box {
      padding: 24px;
      border-radius: var(--radius);
      background: #101814;
      color: #fff;
    }

    .quote-box h2 {
      margin: 0 0 12px;
      font-size: 26px;
      line-height: 1.3;
    }

    .quote-box p {
      margin: 0;
      color: #d6e2dc;
    }

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

    .insight-item {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 14px;
      padding: 16px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
    }

    .number {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: var(--radius-sm);
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 900;
    }

    .insight-item h3 {
      margin: 0 0 4px;
      font-size: 17px;
    }

    .insight-item p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

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

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 340px;
      gap: 18px;
    }

    .news-list {
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
      overflow: hidden;
      box-shadow: var(--shadow);
    }

    .news-link {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 16px;
      padding: 18px;
      border-bottom: 1px solid var(--border);
      transition: background .2s ease, color .2s ease;
    }

    .news-link:last-child {
      border-bottom: 0;
    }

    .news-link:hover {
      background: var(--bg-mint);
      color: var(--primary-dark);
    }

    .news-link h3 {
      margin: 0 0 4px;
      font-size: 17px;
      line-height: 1.35;
    }

    .news-link p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .news-date {
      color: var(--light-text);
      font-size: 13px;
      white-space: nowrap;
    }

    .side-panel {
      padding: 20px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: var(--shadow);
    }

    .side-panel h3 {
      margin: 0 0 12px;
      font-size: 19px;
    }

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

    .progress-list li {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 10px 0;
      border-bottom: 1px solid var(--border);
      color: var(--muted);
      font-size: 14px;
    }

    .progress-list li:last-child {
      border-bottom: 0;
    }

    .reviews {
      background: #fff;
    }

    .review-layout {
      display: grid;
      grid-template-columns: 320px 1fr;
      gap: 18px;
      align-items: stretch;
    }

    .score-card {
      padding: 24px;
      border-radius: var(--radius);
      background: var(--bg-mint);
      border: 1px solid var(--border-strong);
    }

    .score-card strong {
      display: block;
      font-size: 42px;
      line-height: 1;
      color: var(--primary-dark);
    }

    .score-card p {
      margin: 10px 0 18px;
      color: var(--muted);
    }

    .review-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .review-card {
      padding: 18px;
    }

    .review-card h3 {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      font-size: 16px;
    }

    .stars {
      color: var(--amber);
      white-space: nowrap;
      font-size: 13px;
    }

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

    .faq-list {
      display: grid;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }

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

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

    .faq-item summary {
      min-height: 54px;
      padding: 16px 48px 16px 18px;
      list-style: none;
      cursor: pointer;
      font-weight: 900;
      position: relative;
    }

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

    .faq-item summary::after {
      content: "+";
      position: absolute;
      right: 18px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--primary-dark);
      font-size: 22px;
      line-height: 1;
    }

    .faq-item[open] summary::after {
      content: "−";
    }

    .faq-item p {
      margin: 0;
      padding: 0 18px 18px;
      color: var(--muted);
      font-size: 15px;
    }

    .join {
      background: #fff;
      padding-bottom: 84px;
    }

    .join-band {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 26px;
      align-items: center;
      padding: 28px;
      border: 1px solid var(--border-strong);
      border-radius: var(--radius);
      background: linear-gradient(135deg, var(--bg-mint), #fff);
    }

    .join-band h2 {
      margin: 0 0 8px;
      font-size: clamp(24px, 3vw, 30px);
      line-height: 1.25;
    }

    .join-band p {
      margin: 0;
      color: var(--muted);
      max-width: 720px;
    }

    .join-checks {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .site-footer {
      border-top: 1px solid var(--border);
      background: #0f1713;
      color: #eaf4ee;
      padding: 38px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 30px;
      align-items: start;
    }

    .footer-brand {
      font-weight: 900;
      font-size: 18px;
      margin-bottom: 10px;
    }

    .footer-grid p {
      margin: 0;
      color: #b7c9bf;
      max-width: 620px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 10px;
    }

    .footer-links a {
      padding: 8px 11px;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 999px;
      color: #dbe8e1;
      transition: background .2s ease, border-color .2s ease;
    }

    .footer-links a:hover {
      background: rgba(255,255,255,.08);
      border-color: rgba(255,255,255,.28);
    }

    .copyright {
      margin-top: 28px;
      padding-top: 18px;
      border-top: 1px solid rgba(255,255,255,.12);
      color: #91a39a;
      font-size: 13px;
    }

    :focus-visible {
      outline: 3px solid rgba(22, 163, 74, .28);
      outline-offset: 3px;
    }

    @media (max-width: 1024px) {
      :root {
        --section: 58px;
      }

      .hero-grid,
      .material-layout,
      .insight-grid,
      .news-layout,
      .review-layout,
      .join-band,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero-grid {
        gap: 24px;
      }

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

      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .topbar {
        gap: 12px;
      }

      .brand-text {
        max-width: 58vw;
        font-size: 15px;
      }

      .header-cta {
        min-height: 38px;
        padding: 0 12px;
        font-size: 13px;
      }

      .promo-strip {
        align-items: flex-start;
        flex-direction: column;
      }

      .trust-row,
      .highlight-grid,
      .preview-grid,
      .review-grid {
        grid-template-columns: 1fr;
      }

      .section-head {
        display: block;
      }

      .pricing-table {
        display: none;
      }

      .mobile-plans {
        display: grid;
        gap: 14px;
      }

      .plan-card {
        padding: 18px;
      }

      .plan-card h3 {
        margin: 0 0 12px;
        font-size: 19px;
      }

      .plan-card ul {
        margin: 0 0 16px;
        padding: 0;
        list-style: none;
        display: grid;
        gap: 8px;
      }

      .plan-card li {
        color: var(--muted);
        font-size: 14px;
      }

      .btn-row,
      .join-band .btn-row {
        width: 100%;
      }

      .btn {
        width: 100%;
      }

      .news-link {
        grid-template-columns: 1fr;
        gap: 8px;
      }
    }

    @media (max-width: 520px) {
      :root {
        --section: 44px;
      }

      .hero {
        padding-top: 30px;
      }

      .hero h1 {
        font-size: 29px;
      }

      .hero-desc {
        font-size: 15px;
      }

      .stage-body {
        padding: 14px;
      }

      .stage-list li {
        grid-template-columns: 24px 1fr;
      }

      .stage-list .status-pill {
        grid-column: 2;
      }

      .join-band {
        padding: 20px;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #ffffff;
      --bg-soft: #f7faf8;
      --bg-green: #ecfdf3;
      --text: #111827;
      --muted: #5f6b66;
      --muted-2: #7b8782;
      --border: #e5ece8;
      --border-strong: #cde7d7;
      --primary: #16a34a;
      --primary-dark: #12813c;
      --primary-soft: #e9f9ef;
      --amber: #f59e0b;
      --card: #ffffff;
      --radius: 8px;
      --radius-sm: 6px;
      --shadow: 0 8px 24px rgba(17, 24, 39, 0.06);
      --shadow-hover: 0 14px 34px rgba(17, 24, 39, 0.1);
      --container: 1200px;
      --section: 72px;
      --font: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

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

    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      background: var(--bg);
      line-height: 1.65;
      font-size: 16px;
    }

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

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

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

    button {
      cursor: pointer;
    }

    :focus-visible {
      outline: 3px solid rgba(22, 163, 74, 0.26);
      outline-offset: 3px;
      border-radius: var(--radius-sm);
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 30;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
    }

    .topbar {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      font-weight: 800;
      color: var(--text);
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      flex: 0 0 auto;
      border-radius: 8px;
      background: linear-gradient(135deg, #16a34a, #44c877);
      position: relative;
      box-shadow: 0 10px 20px rgba(22, 163, 74, 0.2);
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      width: 15px;
      height: 8px;
      left: 9px;
      top: 11px;
      border-left: 3px solid #fff;
      border-bottom: 3px solid #fff;
      transform: rotate(-45deg);
    }

    .brand-text {
      overflow-wrap: anywhere;
      line-height: 1.25;
      letter-spacing: 0;
    }

    .header-cta,
    .btn-primary,
    .btn-secondary,
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      padding: 10px 16px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
      white-space: nowrap;
    }

    .header-cta,
    .btn-primary {
      background: var(--primary);
      color: #fff;
      border: 1px solid var(--primary);
      box-shadow: 0 8px 18px rgba(22, 163, 74, 0.16);
    }

    .header-cta:hover,
    .btn-primary:hover {
      background: var(--primary-dark);
      border-color: var(--primary-dark);
      transform: translateY(-1px);
    }

    .btn-secondary {
      background: #fff;
      color: var(--primary-dark);
      border: 1px solid var(--border-strong);
    }

    .btn-secondary:hover {
      background: var(--primary-soft);
      border-color: var(--primary);
      transform: translateY(-1px);
    }

    .btn-ghost {
      color: var(--muted);
      border: 1px solid var(--border);
      background: #fff;
    }

    .btn-ghost:hover {
      color: var(--primary-dark);
      border-color: var(--border-strong);
      background: var(--bg-green);
    }

    .seg-nav {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 0 0 16px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .seg-nav::-webkit-scrollbar {
      display: none;
    }

    .nav-chip,
    .chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 36px;
      padding: 7px 14px;
      border: 1px solid var(--border);
      border-radius: 999px;
      background: #fff;
      color: var(--muted);
      font-weight: 700;
      font-size: 14px;
      white-space: nowrap;
      transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .nav-chip:hover,
    .chip:hover {
      background: var(--primary-soft);
      border-color: var(--border-strong);
      color: var(--primary-dark);
    }

    .nav-chip.active,
    .chip.active {
      background: var(--bg-green);
      border-color: var(--primary);
      color: var(--primary-dark);
      box-shadow: 0 6px 18px rgba(22, 163, 74, 0.08);
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: var(--section) 0;
    }

    .section-tight {
      padding: 48px 0;
    }

    .topic-hero {
      background:
        linear-gradient(180deg, #f7faf8 0%, #ffffff 82%),
        radial-gradient(circle at 80% 10%, rgba(22, 163, 74, 0.08), transparent 32%);
      border-bottom: 1px solid var(--border);
      padding: 54px 0 38px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(340px, 0.78fr);
      gap: 36px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      color: var(--primary-dark);
      background: var(--bg-green);
      border: 1px solid var(--border-strong);
      border-radius: 999px;
      padding: 6px 12px;
      font-size: 13px;
      font-weight: 800;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.12);
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1 {
      margin-bottom: 16px;
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.18;
      letter-spacing: 0;
    }

    .hero-lead {
      max-width: 720px;
      margin-bottom: 20px;
      color: var(--muted);
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin: 24px 0 18px;
    }

    .status-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      color: var(--muted);
      font-size: 14px;
    }

    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border: 1px solid var(--border);
      background: #fff;
      border-radius: 999px;
      padding: 6px 10px;
    }

    .status-pill::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--primary);
    }

    .time-panel {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 18px;
    }

    .panel-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--border);
    }

    .window-dots {
      display: flex;
      gap: 6px;
    }

    .window-dots span {
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: #d6ded9;
    }

    .panel-title {
      font-weight: 800;
      color: var(--text);
    }

    .slot-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
      margin: 16px 0;
    }

    .slot {
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 12px;
      background: #fff;
    }

    .slot strong {
      display: block;
      margin-bottom: 4px;
      font-size: 14px;
    }

    .slot span {
      color: var(--muted);
      font-size: 13px;
    }

    .slot.active {
      background: var(--bg-green);
      border-color: var(--primary);
    }

    .progress-block {
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 14px;
      background: var(--bg-soft);
    }

    .progress-line {
      height: 8px;
      background: #e6eee9;
      border-radius: 999px;
      overflow: hidden;
      margin: 10px 0 8px;
    }

    .progress-line span {
      display: block;
      width: 78%;
      height: 100%;
      background: var(--primary);
      border-radius: inherit;
    }

    .layout-main {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 28px;
      align-items: start;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 20px;
      margin-bottom: 22px;
    }

    .section-head h2 {
      margin-bottom: 6px;
      font-size: clamp(24px, 3vw, 30px);
      line-height: 1.25;
      letter-spacing: 0;
    }

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

    .filter-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 14px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--bg-soft);
      margin-bottom: 18px;
    }

    .content-list {
      display: grid;
      gap: 14px;
    }

    .update-card {
      display: grid;
      grid-template-columns: 130px minmax(0, 1fr);
      gap: 18px;
      padding: 16px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: 0 4px 14px rgba(17, 24, 39, 0.035);
      transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    }

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

    .cover-abstract {
      min-height: 112px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      background:
        linear-gradient(135deg, rgba(22, 163, 74, 0.18), rgba(255, 255, 255, 0.9)),
        repeating-linear-gradient(0deg, rgba(17, 24, 39, 0.06) 0, rgba(17, 24, 39, 0.06) 1px, transparent 1px, transparent 13px);
      position: relative;
      overflow: hidden;
    }

    .cover-abstract::after {
      content: "字幕";
      position: absolute;
      right: 10px;
      bottom: 10px;
      padding: 4px 8px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--border);
      color: var(--primary-dark);
      font-size: 12px;
      font-weight: 800;
    }

    .card-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 8px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 26px;
      padding: 4px 9px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      border: 1px solid var(--border-strong);
      font-size: 12px;
      font-weight: 800;
    }

    .badge.gray {
      color: var(--muted);
      background: #f8faf9;
      border-color: var(--border);
    }

    .badge.amber {
      color: #915f05;
      background: #fff8e7;
      border-color: #f8df9e;
    }

    .update-card h3 {
      margin-bottom: 7px;
      font-size: 19px;
      line-height: 1.35;
      letter-spacing: 0;
    }

    .update-card p {
      margin-bottom: 13px;
      color: var(--muted);
      font-size: 14px;
    }

    .card-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      color: var(--muted-2);
      font-size: 13px;
    }

    .text-link {
      color: var(--primary-dark);
      font-weight: 800;
    }

    .text-link:hover {
      color: var(--primary);
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    .sidebar {
      display: grid;
      gap: 16px;
      position: sticky;
      top: 122px;
    }

    .side-panel,
    .info-card,
    .faq-item,
    .note-band {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: 0 4px 16px rgba(17, 24, 39, 0.04);
    }

    .side-panel {
      padding: 18px;
    }

    .side-panel h3 {
      margin-bottom: 10px;
      font-size: 18px;
    }

    .side-panel p {
      color: var(--muted);
      font-size: 14px;
      margin-bottom: 14px;
    }

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

    .check-list li {
      display: flex;
      gap: 9px;
      color: var(--muted);
      font-size: 14px;
    }

    .check-list li::before {
      content: "";
      width: 17px;
      height: 17px;
      flex: 0 0 auto;
      margin-top: 3px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: inset 0 0 0 5px #fff, 0 0 0 1px var(--primary);
    }

    .quick-links {
      display: grid;
      gap: 8px;
    }

    .quick-links a {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      padding: 11px 12px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      color: var(--muted);
      font-weight: 700;
      transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    }

    .quick-links a:hover {
      background: var(--bg-green);
      border-color: var(--primary);
      color: var(--primary-dark);
    }

    .quick-links a::after {
      content: "›";
      color: var(--primary);
      font-weight: 900;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin-top: 26px;
    }

    .metric {
      padding: 18px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
    }

    .metric strong {
      display: block;
      margin-bottom: 6px;
      font-size: 26px;
      line-height: 1;
      color: var(--primary-dark);
      letter-spacing: 0;
    }

    .metric span {
      color: var(--muted);
      font-size: 13px;
    }

    .note-band {
      padding: 22px;
      background: linear-gradient(180deg, #ffffff, #f7faf8);
    }

    .note-band h2 {
      margin-bottom: 10px;
      font-size: 24px;
    }

    .note-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 22px;
      align-items: center;
    }

    .step-list {
      display: grid;
      gap: 12px;
      counter-reset: step;
    }

    .step-item {
      counter-increment: step;
      display: grid;
      grid-template-columns: 34px minmax(0, 1fr);
      gap: 12px;
      align-items: start;
    }

    .step-item::before {
      content: counter(step);
      width: 34px;
      height: 34px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-weight: 900;
    }

    .step-item strong {
      display: block;
      margin-bottom: 3px;
    }

    .step-item span {
      color: var(--muted);
      font-size: 14px;
    }

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

    .faq-item {
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      min-height: 52px;
      padding: 15px 18px;
      border: 0;
      background: #fff;
      color: var(--text);
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      text-align: left;
      font-weight: 800;
    }

    .faq-question::after {
      content: "+";
      color: var(--primary);
      font-size: 22px;
      line-height: 1;
      transition: transform 0.2s ease;
    }

    .faq-item.active {
      border-color: var(--border-strong);
      box-shadow: 0 8px 20px rgba(22, 163, 74, 0.07);
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: none;
      padding: 0 18px 16px;
      color: var(--muted);
      font-size: 14px;
      border-left: 3px solid var(--primary);
      margin-left: 18px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .join-band {
      background: var(--bg-green);
      border-top: 1px solid var(--border-strong);
      border-bottom: 1px solid var(--border-strong);
    }

    .join-inner {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 28px;
      align-items: center;
      padding: 34px 0;
    }

    .join-inner h2 {
      margin-bottom: 8px;
      font-size: clamp(24px, 3vw, 30px);
    }

    .join-inner p {
      margin-bottom: 0;
      color: var(--muted);
      max-width: 720px;
    }

    .join-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .site-footer {
      background: #111827;
      color: #d8e1dc;
      padding: 42px 0 26px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 32px;
      align-items: start;
      padding-bottom: 26px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .footer-brand {
      color: #fff;
      font-size: 18px;
      font-weight: 900;
      margin-bottom: 10px;
    }

    .site-footer p {
      max-width: 680px;
      margin-bottom: 0;
      color: #aeb9b4;
      font-size: 14px;
    }

    .footer-links {
      display: grid;
      grid-template-columns: repeat(2, minmax(120px, 1fr));
      gap: 10px 18px;
    }

    .footer-links a {
      color: #d8e1dc;
      font-weight: 700;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #7ee0a0;
    }

    .copyright {
      padding-top: 18px;
      color: #98a6a0;
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      :root {
        --section: 58px;
      }

      .hero-grid,
      .layout-main {
        grid-template-columns: 1fr;
      }

      .sidebar {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

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

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .topbar {
        min-height: 64px;
      }

      .brand-text {
        font-size: 14px;
      }

      .header-cta {
        padding: 9px 12px;
        min-height: 38px;
        font-size: 13px;
      }

      .seg-nav {
        padding-bottom: 12px;
      }

      .topic-hero {
        padding: 40px 0 30px;
      }

      .hero-actions,
      .join-actions {
        flex-direction: column;
      }

      .btn-primary,
      .btn-secondary,
      .btn-ghost {
        width: 100%;
      }

      .slot-grid,
      .metrics-grid,
      .sidebar,
      .footer-grid,
      .join-inner {
        grid-template-columns: 1fr;
      }

      .section-head {
        display: block;
      }

      .update-card {
        grid-template-columns: 1fr;
      }

      .cover-abstract {
        min-height: 96px;
      }

      .card-foot {
        align-items: flex-start;
        flex-direction: column;
      }

      .join-actions {
        justify-content: stretch;
      }

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

    @media (max-width: 520px) {
      body {
        font-size: 15px;
      }

      .topbar {
        gap: 10px;
      }

      .brand {
        gap: 9px;
      }

      .brand-mark {
        width: 30px;
        height: 30px;
      }

      .brand-mark::after {
        left: 8px;
        top: 10px;
        width: 13px;
        height: 7px;
      }

      .header-cta {
        white-space: normal;
        text-align: center;
        line-height: 1.25;
        max-width: 112px;
      }

      .nav-chip,
      .chip {
        min-height: 34px;
        padding: 7px 12px;
      }

      .filter-bar {
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
      }

      .filter-bar::-webkit-scrollbar {
        display: none;
      }

      .time-panel,
      .side-panel,
      .note-band {
        padding: 14px;
      }

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

/* roulang page: category2 */
:root {
      --bg: #ffffff;
      --bg-soft: #f7faf8;
      --bg-mint: #ecfdf3;
      --text: #111827;
      --muted: #5f6b66;
      --faint: #8a9690;
      --line: #e5ece8;
      --line-strong: #d4e3da;
      --green: #16a34a;
      --green-dark: #12833d;
      --green-soft: #e9f8ef;
      --amber: #f59e0b;
      --radius: 8px;
      --radius-sm: 6px;
      --shadow: 0 8px 24px rgba(17, 24, 39, .06);
      --shadow-hover: 0 14px 34px rgba(17, 24, 39, .10);
      --container: 1200px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.65;
      font-size: 16px;
    }

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

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

    button {
      border: 0;
      cursor: pointer;
    }

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

    :focus-visible {
      outline: 3px solid rgba(22, 163, 74, .28);
      outline-offset: 3px;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, .94);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }

    .topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      min-height: 72px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      font-weight: 800;
      color: var(--text);
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      flex: 0 0 auto;
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(22, 163, 74, .95), rgba(18, 160, 92, .72)),
        radial-gradient(circle at 70% 22%, rgba(255,255,255,.7), transparent 28%);
      position: relative;
      box-shadow: 0 8px 18px rgba(22, 163, 74, .22);
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      left: 10px;
      top: 9px;
      width: 13px;
      height: 8px;
      border-left: 3px solid #fff;
      border-bottom: 3px solid #fff;
      transform: rotate(-45deg);
    }

    .brand-text {
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      font-size: 18px;
      letter-spacing: 0;
    }

    .header-cta,
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      padding: 0 18px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
      white-space: nowrap;
    }

    .header-cta,
    .btn-primary {
      background: var(--green);
      color: #fff;
      box-shadow: 0 8px 18px rgba(22, 163, 74, .18);
    }

    .header-cta:hover,
    .btn-primary:hover {
      background: var(--green-dark);
      transform: translateY(-1px);
      box-shadow: 0 12px 24px rgba(22, 163, 74, .24);
    }

    .btn-secondary {
      color: var(--green-dark);
      background: #fff;
      border: 1px solid rgba(22, 163, 74, .38);
    }

    .btn-secondary:hover {
      background: var(--green-soft);
      border-color: var(--green);
      transform: translateY(-1px);
    }

    .seg-nav {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 0 0 16px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .seg-nav::-webkit-scrollbar {
      display: none;
    }

    .nav-chip,
    .chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 36px;
      padding: 0 15px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
      transition: all .2s ease;
    }

    .nav-chip:hover,
    .chip:hover {
      color: var(--green-dark);
      border-color: rgba(22, 163, 74, .38);
      background: var(--green-soft);
    }

    .nav-chip.active,
    .chip.active {
      color: var(--green-dark);
      border-color: rgba(22, 163, 74, .55);
      background: var(--bg-mint);
    }

    .main {
      overflow: hidden;
    }

    .section {
      padding: 68px 0;
    }

    .section-soft {
      background: var(--bg-soft);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .flash-strip {
      background: linear-gradient(90deg, #f7fff9, #fffaf0);
      border-bottom: 1px solid var(--line);
    }

    .flash-inner {
      min-height: 58px;
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 18px;
    }

    .flash-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--green-dark);
      font-weight: 800;
    }

    .dot {
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 6px rgba(22, 163, 74, .12);
    }

    .countdown {
      display: flex;
      gap: 8px;
      align-items: center;
      justify-content: center;
      color: var(--muted);
      font-size: 14px;
    }

    .time-box {
      min-width: 34px;
      padding: 5px 7px;
      border: 1px solid var(--line-strong);
      border-radius: 6px;
      background: #fff;
      color: var(--text);
      font-weight: 800;
      text-align: center;
    }

    .flash-link {
      color: var(--green-dark);
      font-weight: 800;
      font-size: 14px;
    }

    .hero-topic {
      padding: 54px 0 62px;
      background:
        linear-gradient(180deg, rgba(247,250,248,.86), rgba(255,255,255,1) 62%),
        radial-gradient(circle at 85% 10%, rgba(22,163,74,.10), transparent 32%);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
      gap: 42px;
      align-items: start;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--green-dark);
      background: var(--bg-mint);
      border: 1px solid rgba(22, 163, 74, .22);
      border-radius: 999px;
      padding: 7px 12px;
      font-weight: 800;
      font-size: 13px;
      margin-bottom: 18px;
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1 {
      margin-bottom: 16px;
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.18;
      letter-spacing: 0;
    }

    h2 {
      margin-bottom: 12px;
      font-size: clamp(24px, 3vw, 30px);
      line-height: 1.28;
      letter-spacing: 0;
    }

    h3 {
      margin-bottom: 10px;
      font-size: 20px;
      line-height: 1.35;
      letter-spacing: 0;
    }

    .lead {
      max-width: 720px;
      margin-bottom: 24px;
      color: var(--muted);
      font-size: 17px;
    }

    .hero-actions,
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin: 26px 0;
    }

    .status-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 8px 12px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: #fff;
      color: var(--muted);
      font-weight: 700;
      font-size: 13px;
    }

    .status-pill::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
    }

    .deal-card,
    .panel,
    .content-card,
    .feature-card,
    .faq-item,
    .step-card,
    .preview-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
    }

    .deal-card:hover,
    .content-card:hover,
    .feature-card:hover,
    .preview-card:hover {
      border-color: rgba(22, 163, 74, .42);
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }

    .deal-card {
      padding: 18px;
      position: relative;
    }

    .deal-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 14px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      color: var(--green-dark);
      background: var(--bg-mint);
      border: 1px solid rgba(22, 163, 74, .22);
      font-size: 12px;
      font-weight: 800;
      white-space: nowrap;
    }

    .badge-amber {
      color: #8a5a05;
      background: #fff7e6;
      border-color: rgba(245, 158, 11, .28);
    }

    .mock-window {
      border: 1px solid var(--line);
      border-radius: 8px;
      overflow: hidden;
      background: #fff;
    }

    .mock-bar {
      height: 38px;
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 0 12px;
      background: #f8fbf9;
      border-bottom: 1px solid var(--line);
    }

    .mock-dot {
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: #dfe8e2;
    }

    .mock-body {
      padding: 16px;
    }

    .mini-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin: 14px 0;
    }

    .mini-cell {
      min-height: 76px;
      padding: 12px;
      border-radius: 8px;
      background: var(--bg-soft);
      border: 1px solid var(--line);
    }

    .mini-cell strong {
      display: block;
      margin-bottom: 4px;
      font-size: 14px;
    }

    .mini-cell span {
      color: var(--muted);
      font-size: 13px;
    }

    .progress-line {
      height: 8px;
      border-radius: 999px;
      background: #edf2ef;
      overflow: hidden;
      margin: 12px 0;
    }

    .progress-line span {
      display: block;
      height: 100%;
      width: 78%;
      border-radius: inherit;
      background: var(--green);
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, .78fr) auto;
      align-items: end;
      gap: 24px;
      margin-bottom: 28px;
    }

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

    .filter-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: flex-end;
    }

    .steps-strip {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin-top: 22px;
    }

    .step-card {
      padding: 18px;
      box-shadow: none;
    }

    .step-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
      color: #fff;
      background: var(--green);
      font-weight: 900;
    }

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

    .topic-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr);
      gap: 24px;
      align-items: start;
    }

    .featured-card {
      min-height: 100%;
      padding: 22px;
      display: grid;
      gap: 18px;
      background:
        linear-gradient(135deg, rgba(236,253,243,.9), rgba(255,255,255,.96)),
        #fff;
    }

    .cover-abstract {
      min-height: 210px;
      border-radius: 8px;
      border: 1px solid var(--line);
      background:
        linear-gradient(135deg, rgba(22,163,74,.16), rgba(255,255,255,.92) 46%, rgba(245,158,11,.10)),
        repeating-linear-gradient(0deg, rgba(17,24,39,.05) 0, rgba(17,24,39,.05) 1px, transparent 1px, transparent 15px);
      position: relative;
      overflow: hidden;
    }

    .cover-abstract::before,
    .cover-abstract::after {
      content: "";
      position: absolute;
      border-radius: 8px;
      background: rgba(255,255,255,.86);
      border: 1px solid var(--line);
    }

    .cover-abstract::before {
      left: 18px;
      top: 22px;
      width: 56%;
      height: 42px;
    }

    .cover-abstract::after {
      right: 18px;
      bottom: 20px;
      width: 42%;
      height: 78px;
    }

    .content-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .content-card {
      padding: 18px;
      min-height: 210px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .card-meta,
    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 26px;
      padding: 0 9px;
      border-radius: 999px;
      background: #f6faf8;
      border: 1px solid var(--line);
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
    }

    .content-card p,
    .featured-card p,
    .preview-card p {
      color: var(--muted);
      font-size: 14px;
      margin-bottom: 14px;
    }

    .card-link {
      color: var(--green-dark);
      font-weight: 800;
      font-size: 14px;
      margin-top: auto;
    }

    .side-stack {
      display: grid;
      gap: 16px;
      position: sticky;
      top: 132px;
    }

    .panel {
      padding: 18px;
      box-shadow: none;
    }

    .panel h3 {
      font-size: 18px;
    }

    .check-list,
    .plain-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 12px;
    }

    .check-list li,
    .plain-list li {
      display: flex;
      gap: 10px;
      color: var(--muted);
      font-size: 14px;
    }

    .check-list li::before {
      content: "";
      width: 18px;
      height: 18px;
      flex: 0 0 auto;
      margin-top: 2px;
      border-radius: 50%;
      background: var(--green);
      position: relative;
      box-shadow: inset 0 0 0 5px var(--green);
    }

    .plain-list li {
      justify-content: space-between;
      border-bottom: 1px solid var(--line);
      padding-bottom: 10px;
    }

    .plain-list li:last-child {
      border-bottom: 0;
      padding-bottom: 0;
    }

    .rights-bar {
      display: grid;
      grid-template-columns: 1.2fr repeat(3, 1fr);
      gap: 1px;
      border: 1px solid var(--line);
      border-radius: 8px;
      overflow: hidden;
      background: var(--line);
      box-shadow: var(--shadow);
    }

    .rights-cell {
      background: #fff;
      padding: 18px;
      min-height: 112px;
    }

    .rights-cell strong {
      display: block;
      margin-bottom: 6px;
      font-size: 15px;
    }

    .rights-cell span {
      color: var(--muted);
      font-size: 13px;
    }

    .rights-cell.highlight {
      background: var(--bg-mint);
    }

    .preview-layout {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 20px;
      align-items: stretch;
    }

    .preview-card {
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .preview-card.large {
      background:
        linear-gradient(135deg, #ffffff, #f3fbf6);
      min-height: 310px;
    }

    .preview-list {
      display: grid;
      gap: 14px;
    }

    .compact-row {
      padding: 16px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      transition: all .2s ease;
    }

    .compact-row:hover {
      border-color: rgba(22, 163, 74, .42);
      box-shadow: var(--shadow);
    }

    .compact-row h3 {
      font-size: 17px;
      margin-bottom: 6px;
    }

    .compact-row p {
      color: var(--muted);
      font-size: 14px;
      margin: 0;
    }

    .faq-list {
      display: grid;
      gap: 12px;
      max-width: 880px;
    }

    .faq-item {
      box-shadow: none;
      overflow: hidden;
    }

    .faq-item summary {
      list-style: none;
      min-height: 54px;
      padding: 16px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-weight: 800;
      cursor: pointer;
    }

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

    .faq-item summary::after {
      content: "+";
      width: 26px;
      height: 26px;
      flex: 0 0 auto;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--green-dark);
      background: var(--green-soft);
      font-size: 18px;
    }

    .faq-item[open] {
      border-color: rgba(22, 163, 74, .36);
    }

    .faq-item[open] summary::after {
      content: "−";
    }

    .faq-item p {
      margin: 0;
      padding: 0 18px 18px;
      color: var(--muted);
      font-size: 15px;
    }

    .join-band {
      background: var(--bg-mint);
      border-top: 1px solid rgba(22, 163, 74, .18);
      border-bottom: 1px solid rgba(22, 163, 74, .18);
    }

    .join-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 28px;
      align-items: center;
    }

    .join-grid p {
      color: var(--muted);
      margin-bottom: 0;
      max-width: 680px;
    }

    .site-footer {
      background: #0f1712;
      color: #dce7df;
      padding: 52px 0 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(240px, .8fr);
      gap: 34px;
      padding-bottom: 28px;
      border-bottom: 1px solid rgba(255, 255, 255, .10);
    }

    .footer-brand {
      font-size: 20px;
      font-weight: 900;
      color: #fff;
      margin-bottom: 10px;
    }

    .site-footer p {
      margin: 0;
      max-width: 620px;
      color: #aebdb4;
      font-size: 14px;
    }

    .footer-links {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      align-content: start;
    }

    .footer-links a {
      color: #dce7df;
      font-weight: 700;
      font-size: 14px;
      padding: 8px 0;
      transition: color .2s ease;
    }

    .footer-links a:hover {
      color: #86efac;
    }

    .copyright {
      padding-top: 22px;
      color: #91a299;
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .hero-grid,
      .topic-layout,
      .preview-layout {
        grid-template-columns: 1fr;
      }

      .side-stack {
        position: static;
      }

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

      .section-head {
        grid-template-columns: 1fr;
        align-items: start;
      }

      .filter-row {
        justify-content: flex-start;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .topbar {
        min-height: 66px;
      }

      .brand-text {
        font-size: 16px;
        max-width: 58vw;
      }

      .header-cta {
        min-height: 38px;
        padding: 0 12px;
        font-size: 13px;
      }

      .seg-nav {
        padding-bottom: 14px;
      }

      .flash-inner {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 12px 0;
      }

      .countdown {
        justify-content: flex-start;
      }

      .hero-topic {
        padding: 38px 0 46px;
      }

      .section {
        padding: 46px 0;
      }

      .steps-strip,
      .content-grid,
      .rights-bar {
        grid-template-columns: 1fr;
      }

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

      .hero-actions,
      .cta-actions {
        flex-direction: column;
      }

      .btn,
      .header-cta {
        width: auto;
      }

      .hero-actions .btn,
      .cta-actions .btn {
        width: 100%;
      }

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

      .join-grid .cta-actions {
        margin-bottom: 0;
      }
    }

    @media (max-width: 520px) {
      body {
        font-size: 15px;
      }

      h1 {
        font-size: 29px;
      }

      h2 {
        font-size: 24px;
      }

      .brand-mark {
        width: 30px;
        height: 30px;
      }

      .brand-mark::after {
        left: 9px;
        top: 8px;
      }

      .deal-card,
      .panel,
      .content-card,
      .featured-card,
      .preview-card {
        padding: 16px;
      }

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