/* roulang page: index */
:root {
      --bg: #f4f8fc;
      --bg-soft: #eef4fb;
      --surface: #ffffff;
      --surface-soft: #f8fbfe;
      --line: #d7e1ee;
      --line-strong: #c3d2e4;
      --text: #17324f;
      --muted: #5f7389;
      --faint: #87a0b8;
      --brand: #2d6cdf;
      --brand-deep: #1f57bf;
      --brand-soft: #e5efff;
      --accent: #0ea5b7;
      --warm: #e2a84a;
      --success: #23845b;
      --shadow: 0 18px 40px rgba(27, 54, 92, 0.08);
      --shadow-soft: 0 10px 24px rgba(27, 54, 92, 0.06);
      --radius: 8px;
      --radius-sm: 6px;
      --radius-lg: 12px;
      --space: 24px;
      --space-lg: 40px;
      --space-xl: 72px;
      --container: 1180px;
      --focus: 0 0 0 3px rgba(45, 108, 223, 0.18);
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      color: var(--text);
      background:
        linear-gradient(180deg, #f8fbff 0%, #f4f8fc 100%);
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img, svg { display: block; max-width: 100%; }
    button, input, select, textarea {
      font: inherit;
      color: inherit;
    }
    button {
      border: 0;
      background: none;
      padding: 0;
      cursor: pointer;
    }
    input, select, textarea {
      border: 1px solid var(--line);
      background: #fff;
      border-radius: var(--radius-sm);
      padding: 0.9rem 1rem;
      outline: none;
      transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
    }
    input::placeholder, textarea::placeholder { color: #8fa3b9; }
    input:focus, select:focus, textarea:focus {
      border-color: rgba(45, 108, 223, 0.55);
      box-shadow: var(--focus);
    }
    :focus-visible {
      outline: none;
      box-shadow: var(--focus);
    }
    .container {
      width: min(var(--container), calc(100% - 32px));
      margin: 0 auto;
    }
    .section {
      padding: 76px 0;
    }
    .section-soft {
      background:
        linear-gradient(180deg, rgba(255,255,255,.65), rgba(255,255,255,.92));
      border-top: 1px solid rgba(215, 225, 238, .55);
      border-bottom: 1px solid rgba(215, 225, 238, .55);
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--brand);
      font-size: 0.92rem;
      font-weight: 700;
      letter-spacing: 0;
      margin-bottom: 12px;
    }
    .eyebrow::before {
      content: "";
      width: 28px;
      height: 1px;
      background: var(--brand);
      opacity: .45;
    }
    h1, h2, h3, p { margin: 0; }
    h1 {
      font-size: clamp(2.25rem, 3vw, 4rem);
      line-height: 1.12;
      letter-spacing: 0;
      margin-bottom: 18px;
    }
    h2 {
      font-size: clamp(1.55rem, 2.2vw, 2.2rem);
      line-height: 1.2;
      margin-bottom: 12px;
    }
    h3 {
      font-size: 1.05rem;
      line-height: 1.35;
      margin-bottom: 8px;
    }
    .section-lead {
      max-width: 760px;
      color: var(--muted);
      font-size: 1rem;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(244, 248, 252, 0.97);
      border-bottom: 1px solid rgba(215, 225, 238, 0.9);
      box-shadow: 0 1px 0 rgba(255,255,255,.8) inset;
    }
    .header-top {
      padding: 14px 0 12px;
    }
    .header-top-inner {
      display: flex;
      align-items: center;
      gap: 18px;
      justify-content: space-between;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: max-content;
    }
    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background:
        linear-gradient(145deg, rgba(45,108,223,.12), rgba(14,165,183,.1));
      border: 1px solid rgba(45,108,223,.18);
      display: grid;
      place-items: center;
      box-shadow: var(--shadow-soft);
    }
    .brand-mark span {
      width: 18px;
      height: 18px;
      border-radius: 6px;
      background: linear-gradient(145deg, var(--brand), var(--accent));
      display: block;
      box-shadow: 0 6px 18px rgba(45,108,223,.25);
    }
    .brand-text strong {
      display: block;
      font-size: 1.02rem;
      line-height: 1.2;
      color: var(--text);
    }
    .brand-text small {
      display: block;
      color: var(--muted);
      font-size: 0.83rem;
      margin-top: 2px;
    }
    .search-bar {
      flex: 1;
      max-width: 430px;
      display: flex;
      align-items: center;
      gap: 10px;
      margin-left: auto;
    }
    .search-bar input {
      width: 100%;
      height: 46px;
      background: #fff;
    }
    .search-bar button,
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: var(--radius-sm);
      height: 46px;
      padding: 0 1.1rem;
      font-weight: 700;
      transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease, color .18s ease;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--brand);
      color: #fff;
      box-shadow: 0 10px 22px rgba(45,108,223,.18);
    }
    .btn-primary:hover {
      background: var(--brand-deep);
      transform: translateY(-1px);
      box-shadow: 0 14px 28px rgba(45,108,223,.22);
    }
    .btn-secondary {
      background: #fff;
      color: var(--brand);
      border: 1px solid rgba(45,108,223,.18);
    }
    .btn-secondary:hover {
      border-color: rgba(45,108,223,.32);
      transform: translateY(-1px);
      box-shadow: var(--shadow-soft);
    }
    .btn-ghost {
      background: transparent;
      border: 1px solid rgba(215, 225, 238, .92);
      color: var(--text);
    }
    .btn-ghost:hover {
      border-color: rgba(45,108,223,.24);
      background: rgba(229, 239, 255, .6);
    }

    .channel-bar {
      padding: 12px 0 16px;
    }
    .channel-inner {
      display: flex;
      align-items: center;
      gap: 14px;
      justify-content: space-between;
    }
    .primary-nav {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }
    .primary-nav a {
      height: 38px;
      padding: 0 14px;
      display: inline-flex;
      align-items: center;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid transparent;
      transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
    }
    .primary-nav a:hover {
      color: var(--brand);
      background: rgba(229,239,255,.75);
      border-color: rgba(45,108,223,.16);
      transform: translateY(-1px);
    }
    .primary-nav a.active {
      color: var(--brand);
      background: var(--brand-soft);
      border-color: rgba(45,108,223,.2);
      font-weight: 700;
    }
    .hot-tags {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .hot-tags span {
      color: var(--faint);
      font-size: .9rem;
      margin-right: 2px;
    }
    .chip {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      height: 34px;
      padding: 0 12px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--line);
      color: var(--muted);
      transition: border-color .18s ease, background-color .18s ease, transform .18s ease, color .18s ease;
    }
    .chip:hover {
      background: #f8fbff;
      border-color: rgba(45,108,223,.2);
      color: var(--brand);
      transform: translateY(-1px);
    }

    .hero {
      padding: 42px 0 72px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.12fr) minmax(320px, .88fr);
      gap: 28px;
      align-items: stretch;
    }
    .hero-copy {
      padding: 18px 0 0;
    }
    .hero-copy p {
      color: var(--muted);
      font-size: 1.04rem;
      max-width: 720px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }
    .hero-points {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-top: 24px;
    }
    .hero-points .point {
      min-width: 152px;
      padding: 14px 16px;
      border-radius: var(--radius);
      background: rgba(255,255,255,.82);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }
    .hero-points .point strong {
      display: block;
      font-size: 1.08rem;
      margin-bottom: 4px;
    }
    .hero-points .point span {
      color: var(--muted);
      font-size: .92rem;
    }
    .hero-stage {
      border: 1px solid var(--line);
      border-radius: 12px;
      background: linear-gradient(180deg, #fff, #fbfdff);
      box-shadow: var(--shadow);
      padding: 18px;
      overflow: hidden;
      position: relative;
    }
    .hero-stage::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(45,108,223,.04), transparent 34%),
        linear-gradient(90deg, rgba(14,165,183,.03), transparent 56%);
      pointer-events: none;
    }
    .poster {
      position: relative;
      border-radius: 10px;
      overflow: hidden;
      aspect-ratio: 4 / 3;
      background: #eef5fd;
      border: 1px solid rgba(199,216,238,.9);
    }
    .poster svg {
      width: 100%;
      height: 100%;
      display: block;
    }
    .poster-badge {
      position: absolute;
      left: 16px;
      top: 16px;
      height: 34px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 0 12px;
      border-radius: 999px;
      background: rgba(255,255,255,.9);
      border: 1px solid rgba(215,225,238,.98);
      box-shadow: 0 8px 18px rgba(29,54,87,.08);
      color: var(--brand);
      font-weight: 700;
      font-size: .92rem;
      z-index: 1;
    }
    .hero-panel {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 14px;
    }
    .mini-stat {
      padding: 14px 14px 12px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
    }
    .mini-stat strong {
      display: block;
      color: var(--brand);
      font-size: 1rem;
      margin-bottom: 4px;
    }
    .mini-stat span {
      color: var(--muted);
      font-size: .9rem;
    }

    .timeline-wrap {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      margin-top: 30px;
    }
    .step-card {
      position: relative;
      padding: 22px 20px 20px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      min-height: 184px;
    }
    .step-number {
      width: 36px;
      height: 36px;
      border-radius: 999px;
      display: inline-grid;
      place-items: center;
      background: var(--brand-soft);
      color: var(--brand);
      font-weight: 800;
      margin-bottom: 16px;
    }
    .step-card p {
      color: var(--muted);
      font-size: .96rem;
    }
    .step-card .meta {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 14px;
      padding: 6px 10px;
      border-radius: 999px;
      background: #f6faff;
      border: 1px solid rgba(215,225,238,.9);
      color: var(--faint);
      font-size: .85rem;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      margin-top: 30px;
    }
    .feature-card {
      padding: 22px 20px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      min-height: 208px;
    }
    .feature-icon {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      background: linear-gradient(145deg, rgba(45,108,223,.12), rgba(14,165,183,.08));
      color: var(--brand);
      margin-bottom: 16px;
    }
    .feature-card p {
      color: var(--muted);
      font-size: .95rem;
    }
    .feature-card ul {
      margin: 14px 0 0;
      padding: 0;
      list-style: none;
      color: var(--muted);
      display: grid;
      gap: 8px;
      font-size: .92rem;
    }
    .feature-card li {
      display: flex;
      gap: 8px;
      align-items: flex-start;
    }
    .feature-card li::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 999px;
      margin-top: 0.53rem;
      background: var(--brand);
      flex: 0 0 auto;
    }

    .compare-shell {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 18px;
      margin-top: 30px;
      align-items: start;
    }
    .compare-note {
      padding: 22px 20px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }
    .compare-note p {
      color: var(--muted);
      margin-top: 10px;
    }
    .plan-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }
    .plan-card {
      padding: 22px 20px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      min-height: 100%;
    }
    .plan-card.featured {
      border-color: rgba(45,108,223,.25);
      box-shadow: 0 18px 42px rgba(45,108,223,.1);
      transform: translateY(-4px);
    }
    .plan-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      height: 32px;
      padding: 0 12px;
      border-radius: 999px;
      background: #f5f9ff;
      color: var(--brand);
      font-size: .86rem;
      font-weight: 700;
      width: fit-content;
      margin-bottom: 14px;
    }
    .plan-price {
      font-size: 1.75rem;
      line-height: 1;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .plan-price span {
      font-size: .95rem;
      color: var(--muted);
      font-weight: 500;
    }
    .plan-list {
      list-style: none;
      padding: 0;
      margin: 16px 0 20px;
      display: grid;
      gap: 10px;
      color: var(--muted);
      font-size: .94rem;
      flex: 1;
    }
    .plan-list li {
      display: flex;
      gap: 8px;
      align-items: flex-start;
    }
    .plan-list li::before {
      content: "•";
      color: var(--accent);
      font-weight: 800;
      line-height: 1.2;
    }

    .directory-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      margin-top: 30px;
    }
    .directory-card {
      padding: 20px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      min-height: 160px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .directory-card strong {
      font-size: 1.02rem;
    }
    .directory-card p {
      color: var(--muted);
      font-size: .94rem;
    }
    .directory-meta {
      margin-top: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      color: var(--faint);
      font-size: .88rem;
    }

    .feed-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.12fr) minmax(290px, .88fr);
      gap: 18px;
      margin-top: 30px;
      align-items: start;
    }
    .news-list {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }
    .news-item {
      display: grid;
      grid-template-columns: 120px minmax(0, 1fr);
      gap: 16px;
      padding: 18px 18px;
      border-top: 1px solid var(--line);
      align-items: start;
    }
    .news-item:first-child { border-top: 0; }
    .news-thumb {
      border-radius: var(--radius-sm);
      background:
        linear-gradient(145deg, rgba(45,108,223,.12), rgba(14,165,183,.08));
      border: 1px solid rgba(199,216,238,.95);
      min-height: 76px;
      display: grid;
      place-items: center;
      color: var(--brand);
      font-weight: 800;
      font-size: .92rem;
      text-align: center;
      padding: 10px;
    }
    .news-content h3 {
      margin-bottom: 8px;
      font-size: 1rem;
    }
    .news-content p {
      color: var(--muted);
      font-size: .93rem;
      margin-bottom: 10px;
    }
    .news-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
      color: var(--faint);
      font-size: .86rem;
    }
    .news-meta .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      background: #f7fbff;
      border: 1px solid var(--line);
      color: var(--brand);
      font-weight: 700;
    }
    .side-stack {
      display: grid;
      gap: 16px;
    }
    .side-box {
      padding: 20px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }
    .side-box p {
      color: var(--muted);
      font-size: .94rem;
      margin-top: 10px;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }

    .guide-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      margin-top: 30px;
    }
    .guide-card {
      padding: 22px 20px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      min-height: 188px;
    }
    .guide-card .step {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 999px;
      background: var(--brand-soft);
      color: var(--brand);
      font-weight: 800;
      margin-bottom: 16px;
    }
    .guide-card p {
      color: var(--muted);
      font-size: .95rem;
    }

    .faq-grid {
      display: grid;
      gap: 12px;
      margin-top: 30px;
    }
    details.faq-item {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }
    details.faq-item[open] {
      border-color: rgba(45,108,223,.22);
    }
    details.faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-weight: 700;
    }
    details.faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-answer {
      padding: 0 20px 18px;
      color: var(--muted);
    }

    .cta-block {
      padding: 30px;
      border-radius: 12px;
      background:
        linear-gradient(145deg, #ffffff 0%, #f6faff 100%);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      display: grid;
      grid-template-columns: minmax(0, 1fr) 380px;
      gap: 20px;
      align-items: center;
    }
    .cta-copy p {
      color: var(--muted);
      margin-top: 12px;
      max-width: 640px;
    }
    .cta-form {
      display: grid;
      gap: 12px;
    }
    .cta-form .row {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 10px;
    }
    .cta-form input {
      height: 46px;
      background: #fff;
    }
    .cta-form small {
      color: var(--faint);
      line-height: 1.5;
    }

    .site-footer {
      padding: 28px 0 34px;
      border-top: 1px solid rgba(215, 225, 238, .8);
      background: #f7fbff;
    }
    .footer-inner {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 20px;
      align-items: start;
    }
    .footer-brand strong {
      display: block;
      font-size: 1.02rem;
      margin-bottom: 8px;
    }
    .footer-brand p {
      color: var(--muted);
      max-width: 760px;
      font-size: .94rem;
    }
    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: flex-end;
    }
    .footer-links a {
      color: var(--muted);
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid transparent;
    }
    .footer-links a:hover {
      color: var(--brand);
      background: rgba(229,239,255,.72);
      border-color: rgba(45,108,223,.16);
    }
    .copyright {
      margin-top: 14px;
      color: var(--faint);
      font-size: .88rem;
    }

    @media (max-width: 1080px) {
      .hero-grid,
      .compare-shell,
      .feed-grid,
      .cta-block,
      .footer-inner {
        grid-template-columns: 1fr;
      }
      .feature-grid,
      .timeline-wrap,
      .directory-grid,
      .guide-grid,
      .plan-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .hero-panel {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }
      .search-bar {
        max-width: 360px;
      }
    }

    @media (max-width: 768px) {
      .header-top-inner,
      .channel-inner {
        flex-direction: column;
        align-items: stretch;
      }
      .search-bar {
        max-width: none;
        margin-left: 0;
      }
      .header-top {
        padding-bottom: 10px;
      }
      .channel-bar {
        padding-top: 0;
      }
      .primary-nav {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 2px;
        -webkit-overflow-scrolling: touch;
      }
      .hot-tags {
        justify-content: flex-start;
      }
      .hero {
        padding-top: 28px;
      }
      .feature-grid,
      .timeline-wrap,
      .directory-grid,
      .guide-grid,
      .plan-grid,
      .hero-panel {
        grid-template-columns: 1fr;
      }
      .news-item {
        grid-template-columns: 1fr;
      }
      .cta-block {
        padding: 22px;
      }
      .cta-form .row {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(var(--container), calc(100% - 24px));
      }
      .section {
        padding: 60px 0;
      }
      h1 {
        font-size: 2rem;
      }
      .hero-actions,
      .hero-points,
      .tag-cloud {
        gap: 10px;
      }
      .btn, .search-bar button {
        width: 100%;
      }
      .search-bar {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-stage,
      .step-card,
      .feature-card,
      .directory-card,
      .guide-card,
      .news-list,
      .side-box,
      .compare-note,
      .plan-card {
        border-radius: 8px;
      }
      .hero-copy p,
      .section-lead {
        font-size: .97rem;
      }
      .footer-links {
        justify-content: flex-start;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #f4f8fd;
      --panel: #ffffff;
      --panel-soft: #f8fbff;
      --panel-blue: #edf4ff;
      --line: #d7e2ef;
      --line-strong: #b9cbe3;
      --text: #17324f;
      --muted: #5f748b;
      --soft: #7a8da3;
      --primary: #2f6fed;
      --primary-strong: #1f56c7;
      --primary-soft: #e6efff;
      --accent: #0f8b8d;
      --warn: #d39b2e;
      --shadow: 0 16px 40px rgba(25, 67, 132, 0.08);
      --shadow-sm: 0 8px 20px rgba(25, 67, 132, 0.06);
      --radius: 8px;
      --radius-sm: 6px;
      --container: 1200px;
      --space-1: 6px;
      --space-2: 10px;
      --space-3: 14px;
      --space-4: 18px;
      --space-5: 24px;
      --space-6: 32px;
      --space-7: 40px;
      --space-8: 56px;
      --space-9: 72px;
      --header-h: 0px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      color: var(--text);
      background:
        linear-gradient(180deg, #f7fbff 0%, #eef4fb 100%);
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input, select, textarea {
      font: inherit;
      color: inherit;
    }
    button {
      border: 0;
      background: none;
      cursor: pointer;
    }
    :focus-visible {
      outline: 3px solid rgba(47, 111, 237, 0.22);
      outline-offset: 2px;
    }

    .container {
      width: min(var(--container), calc(100% - 32px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(247, 250, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(215, 226, 239, 0.8);
      box-shadow: 0 1px 0 rgba(255,255,255,0.5);
    }

    .header-top {
      border-bottom: 1px solid rgba(215, 226, 239, 0.75);
    }

    .header-top-inner {
      min-height: 74px;
      display: flex;
      align-items: center;
      gap: var(--space-4);
      justify-content: space-between;
      padding: 12px 0;
    }

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

    .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background:
        linear-gradient(135deg, var(--primary), #5ca2ff);
      box-shadow: 0 8px 18px rgba(47, 111, 237, 0.18);
      position: relative;
      flex: 0 0 auto;
    }
    .brand-mark span {
      position: absolute;
      inset: 9px;
      border-radius: 7px;
      background: rgba(255,255,255,0.9);
      box-shadow: inset 0 0 0 1px rgba(47,111,237,0.08);
    }

    .brand-text {
      display: grid;
      gap: 2px;
      min-width: 0;
    }
    .brand-text strong {
      font-size: 16px;
      line-height: 1.2;
      letter-spacing: 0;
      white-space: nowrap;
    }
    .brand-text small {
      color: var(--muted);
      font-size: 12px;
      line-height: 1.2;
      white-space: nowrap;
    }

    .search-bar {
      display: flex;
      align-items: center;
      gap: 10px;
      width: min(560px, 100%);
      margin-left: auto;
    }
    .search-bar input {
      width: 100%;
      min-width: 0;
      height: 46px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      padding: 0 14px;
      color: var(--text);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
      transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
    }
    .search-bar input::placeholder {
      color: #8ca0b5;
    }
    .search-bar input:focus {
      border-color: rgba(47,111,237,0.55);
      box-shadow: 0 0 0 4px rgba(47,111,237,0.08);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 46px;
      padding: 0 16px;
      border-radius: var(--radius);
      border: 1px solid transparent;
      font-weight: 600;
      letter-spacing: 0;
      white-space: nowrap;
      transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
    }
    .btn:hover { transform: translateY(-1px); }
    .btn:active { transform: translateY(0); }

    .btn-primary {
      color: #fff;
      background: linear-gradient(180deg, var(--primary), var(--primary-strong));
      box-shadow: 0 10px 22px rgba(47, 111, 237, 0.18);
    }
    .btn-primary:hover {
      box-shadow: 0 14px 26px rgba(47, 111, 237, 0.22);
    }

    .btn-secondary {
      color: var(--primary-strong);
      background: #fff;
      border-color: rgba(47, 111, 237, 0.22);
    }
    .btn-secondary:hover {
      border-color: rgba(47, 111, 237, 0.35);
      box-shadow: 0 10px 20px rgba(47, 111, 237, 0.08);
    }

    .channel-bar {
      background: rgba(255,255,255,0.76);
    }
    .channel-inner {
      min-height: 58px;
      display: flex;
      align-items: center;
      gap: 18px;
      justify-content: space-between;
      padding: 10px 0;
    }

    .primary-nav {
      display: flex;
      align-items: center;
      gap: 6px;
      flex-wrap: wrap;
    }
    .primary-nav a {
      display: inline-flex;
      align-items: center;
      height: 38px;
      padding: 0 14px;
      border-radius: var(--radius-sm);
      color: var(--muted);
      border: 1px solid transparent;
      transition: background-color .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
    }
    .primary-nav a:hover {
      color: var(--text);
      background: rgba(47,111,237,0.05);
      border-color: rgba(47,111,237,0.10);
    }
    .primary-nav a.active {
      color: var(--primary-strong);
      background: var(--primary-soft);
      border-color: rgba(47,111,237,0.12);
      font-weight: 700;
    }

    .hot-tags {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .hot-tags > span {
      color: var(--soft);
      font-size: 12px;
    }
    .chip {
      display: inline-flex;
      align-items: center;
      height: 32px;
      padding: 0 12px;
      border-radius: 999px;
      background: #fff;
      color: var(--muted);
      border: 1px solid var(--line);
      box-shadow: 0 1px 0 rgba(255,255,255,0.9);
      transition: border-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
      white-space: nowrap;
    }
    .chip:hover {
      color: var(--primary-strong);
      border-color: rgba(47,111,237,0.28);
      box-shadow: var(--shadow-sm);
      transform: translateY(-1px);
    }

    main { display: block; }

    .hero {
      padding: 36px 0 18px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.34fr) minmax(340px, 0.86fr);
      gap: 24px;
      align-items: stretch;
    }

    .hero-copy,
    .hero-panel,
    .band,
    .compare-card,
    .faq-item,
    .entry-card,
    .stat-card,
    .mini-card {
      border-radius: var(--radius);
      background: var(--panel);
      border: 1px solid rgba(215, 226, 239, 0.95);
      box-shadow: var(--shadow-sm);
    }

    .hero-copy {
      padding: 34px;
      background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(246,250,255,0.96));
      position: relative;
      overflow: hidden;
    }
    .hero-copy::after {
      content: "";
      position: absolute;
      inset: auto -10% -30% auto;
      width: 260px;
      height: 260px;
      background: linear-gradient(135deg, rgba(47,111,237,0.08), rgba(15,139,141,0.08));
      border-radius: 28px;
      transform: rotate(16deg);
      pointer-events: none;
    }

    .eyebrow {
      margin: 0 0 12px;
      color: var(--primary-strong);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0;
      text-transform: none;
    }
    .hero h1 {
      margin: 0;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.08;
      letter-spacing: 0;
      max-width: 12ch;
    }
    .hero-lead {
      margin: 16px 0 0;
      color: var(--muted);
      font-size: 16px;
      max-width: 56ch;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 22px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin-top: 24px;
      position: relative;
      z-index: 1;
    }
    .stat-card {
      padding: 16px 14px;
      background: rgba(255,255,255,0.9);
    }
    .stat-card strong {
      display: block;
      font-size: 20px;
      line-height: 1.1;
      color: var(--text);
    }
    .stat-card span {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 12px;
    }

    .hero-panel {
      padding: 22px;
      background: linear-gradient(180deg, #ffffff, #f8fbff);
      display: grid;
      gap: 16px;
    }
    .panel-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
    }
    .panel-top strong {
      font-size: 18px;
      line-height: 1.3;
    }
    .panel-top p {
      margin: 6px 0 0;
      color: var(--muted);
      font-size: 13px;
    }
    .panel-badge {
      padding: 7px 10px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-strong);
      font-size: 12px;
      font-weight: 700;
      white-space: nowrap;
    }

    .slot-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }
    .slot {
      padding: 14px 14px 13px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel-soft);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
    }
    .slot .time {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: var(--primary-strong);
      font-weight: 700;
    }
    .slot strong {
      display: block;
      margin-top: 8px;
      font-size: 14px;
      line-height: 1.35;
    }
    .slot p {
      margin: 6px 0 0;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.55;
    }

    .mini-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
    }
    .mini-card {
      padding: 12px;
      background: #fff;
    }
    .mini-card i {
      display: inline-flex;
      width: 30px;
      height: 30px;
      border-radius: 8px;
      align-items: center;
      justify-content: center;
      background: var(--primary-soft);
      color: var(--primary-strong);
      margin-bottom: 10px;
    }
    .mini-card strong {
      display: block;
      font-size: 13px;
      line-height: 1.35;
    }
    .mini-card span {
      display: block;
      margin-top: 5px;
      color: var(--muted);
      font-size: 12px;
    }

    .section {
      padding: 20px 0 0;
    }
    .band {
      padding: 28px;
      background: rgba(255,255,255,0.88);
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 18px;
    }
    .section-head h2 {
      margin: 0;
      font-size: 24px;
      line-height: 1.2;
    }
    .section-head p {
      margin: 0;
      color: var(--muted);
      max-width: 62ch;
      font-size: 14px;
    }

    .timeline {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }
    .timeline-item {
      padding: 18px 16px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, #fff, #f8fbff);
      position: relative;
      min-height: 160px;
    }
    .timeline-item::before {
      content: "";
      position: absolute;
      left: 16px;
      top: 16px;
      width: 10px;
      height: 10px;
      border-radius: 999px;
      background: var(--primary);
      box-shadow: 0 0 0 6px rgba(47,111,237,0.08);
    }
    .timeline-item .step {
      margin-left: 22px;
      color: var(--primary-strong);
      font-size: 12px;
      font-weight: 700;
    }
    .timeline-item strong {
      display: block;
      margin-top: 16px;
      font-size: 16px;
      line-height: 1.35;
    }
    .timeline-item p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }
    .feature-card {
      padding: 18px 16px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: #fff;
      min-height: 162px;
      box-shadow: var(--shadow-sm);
    }
    .feature-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-soft);
      color: var(--primary-strong);
      margin-bottom: 12px;
    }
    .feature-card strong {
      display: block;
      font-size: 16px;
      line-height: 1.35;
    }
    .feature-card p {
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }

    .entries-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.8fr);
      gap: 18px;
      align-items: start;
    }

    .filter-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 16px;
    }
    .filter-button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 36px;
      padding: 0 13px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--muted);
      transition: color .2s ease, border-color .2s ease, background-color .2s ease, transform .2s ease;
    }
    .filter-button:hover {
      transform: translateY(-1px);
      border-color: rgba(47,111,237,0.28);
      color: var(--primary-strong);
      background: var(--primary-soft);
    }
    .filter-button.active {
      color: #fff;
      background: linear-gradient(180deg, var(--primary), var(--primary-strong));
      border-color: transparent;
      box-shadow: 0 10px 18px rgba(47,111,237,0.16);
    }

    .entry-list {
      display: grid;
      gap: 14px;
    }
    .entry-card {
      display: grid;
      grid-template-columns: 164px minmax(0, 1fr);
      gap: 16px;
      padding: 14px;
      background: #fff;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .entry-card:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow);
      border-color: rgba(47,111,237,0.22);
    }
    .entry-thumb {
      border-radius: var(--radius-sm);
      overflow: hidden;
      min-height: 124px;
      border: 1px solid rgba(47,111,237,0.10);
      position: relative;
      background:
        linear-gradient(135deg, rgba(47,111,237,0.88), rgba(90,164,255,0.78));
    }
    .entry-thumb::after {
      content: "";
      position: absolute;
      inset: 12px;
      border-radius: 6px;
      border: 1px solid rgba(255,255,255,0.22);
    }
    .entry-thumb .thumb-label {
      position: absolute;
      left: 12px;
      bottom: 12px;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(255,255,255,0.92);
      color: var(--primary-strong);
      font-size: 12px;
      font-weight: 700;
    }
    .entry-body {
      min-width: 0;
      display: grid;
      gap: 10px;
    }
    .entry-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      color: var(--soft);
      font-size: 12px;
    }
    .entry-meta .dot {
      width: 4px;
      height: 4px;
      border-radius: 999px;
      background: #b7c6d8;
    }
    .entry-body h3 {
      margin: 0;
      font-size: 18px;
      line-height: 1.4;
    }
    .entry-body p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.75;
    }
    .entry-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag {
      display: inline-flex;
      align-items: center;
      height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      font-size: 12px;
      color: var(--primary-strong);
      background: var(--primary-soft);
    }

    .side-stack {
      display: grid;
      gap: 14px;
    }
    .side-panel {
      padding: 18px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: #fff;
      box-shadow: var(--shadow-sm);
    }
    .side-panel strong {
      display: block;
      font-size: 16px;
      line-height: 1.35;
      margin-bottom: 10px;
    }
    .side-panel p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }
    .side-list {
      list-style: none;
      margin: 14px 0 0;
      padding: 0;
      display: grid;
      gap: 10px;
    }
    .side-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: var(--text);
      font-size: 13px;
      line-height: 1.55;
    }
    .side-list i {
      flex: 0 0 auto;
      margin-top: 2px;
      color: var(--accent);
    }
    .side-callout {
      display: grid;
      gap: 12px;
      padding: 18px;
      border-radius: var(--radius);
      background: linear-gradient(180deg, #f6faff, #eef5ff);
      border: 1px solid rgba(47,111,237,0.14);
    }
    .side-callout strong {
      font-size: 16px;
      line-height: 1.35;
    }
    .side-callout p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }
    .compare-card {
      padding: 20px;
      background: #fff;
      display: grid;
      gap: 14px;
    }
    .compare-card.featured {
      border-color: rgba(47,111,237,0.22);
      box-shadow: var(--shadow);
    }
    .compare-top {
      display: flex;
      align-items: start;
      justify-content: space-between;
      gap: 12px;
    }
    .compare-top strong {
      font-size: 18px;
      line-height: 1.35;
    }
    .compare-pill {
      padding: 6px 10px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-strong);
      font-size: 12px;
      font-weight: 700;
      white-space: nowrap;
    }
    .compare-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 10px;
    }
    .compare-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.6;
    }
    .compare-list i {
      color: var(--accent);
      margin-top: 2px;
      flex: 0 0 auto;
    }

    .faq-grid {
      display: grid;
      gap: 12px;
    }
    .faq-item {
      padding: 16px 18px;
      background: #fff;
    }
    .faq-item summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-weight: 700;
      color: var(--text);
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary i {
      color: var(--primary-strong);
      transition: transform .2s ease;
      flex: 0 0 auto;
    }
    .faq-item[open] summary i {
      transform: rotate(180deg);
    }
    .faq-item p {
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
      max-width: 70ch;
    }

    .cta-band {
      padding: 28px;
      background:
        linear-gradient(135deg, rgba(47,111,237,0.98), rgba(31,86,199,0.98));
      color: #fff;
      box-shadow: 0 18px 40px rgba(31, 86, 199, 0.18);
    }
    .cta-band .section-head h2,
    .cta-band .section-head p {
      color: #fff;
    }
    .cta-band .section-head p {
      opacity: 0.9;
    }
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 18px;
    }
    .cta-band .btn-secondary {
      background: rgba(255,255,255,0.96);
      border-color: rgba(255,255,255,0.18);
      color: var(--primary-strong);
    }
    .cta-band .btn-secondary:hover {
      background: #fff;
      box-shadow: 0 14px 24px rgba(0,0,0,0.12);
    }

    .site-footer {
      margin-top: 24px;
      padding: 22px 0 28px;
      border-top: 1px solid rgba(215, 226, 239, 0.9);
      background: rgba(255,255,255,0.66);
    }
    .footer-inner {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 24px;
    }
    .footer-brand strong {
      display: block;
      font-size: 17px;
      line-height: 1.3;
      margin-bottom: 8px;
    }
    .footer-brand p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.75;
      max-width: 68ch;
    }
    .copyright {
      margin-top: 12px;
      color: var(--soft);
      font-size: 12px;
    }
    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }
    .footer-links a {
      color: var(--muted);
      font-size: 13px;
      padding: 7px 0;
      transition: color .2s ease;
    }
    .footer-links a:hover {
      color: var(--primary-strong);
    }

    .spacer {
      height: 16px;
    }

    @media (max-width: 1080px) {
      .hero-grid,
      .entries-layout {
        grid-template-columns: 1fr;
      }
      .hero-panel {
        order: 2;
      }
      .hero-copy {
        order: 1;
      }
      .timeline,
      .feature-grid,
      .compare-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 820px) {
      .header-top-inner,
      .channel-inner,
      .footer-inner,
      .section-head {
        align-items: start;
        flex-direction: column;
      }
      .search-bar {
        width: 100%;
        margin-left: 0;
      }
      .hot-tags {
        justify-content: flex-start;
      }
      .hero {
        padding-top: 24px;
      }
      .hero-copy,
      .hero-panel,
      .band,
      .cta-band {
        padding: 22px;
      }
      .hero-stats,
      .mini-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .entry-card {
        grid-template-columns: 1fr;
      }
      .entry-thumb {
        min-height: 180px;
      }
      .timeline,
      .feature-grid,
      .compare-grid {
        grid-template-columns: 1fr;
      }
      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (max-width: 560px) {
      .container {
        width: min(var(--container), calc(100% - 20px));
      }
      .brand-text small {
        display: none;
      }
      .search-bar {
        flex-direction: column;
        align-items: stretch;
      }
      .search-bar .btn {
        width: 100%;
      }
      .hero h1 {
        max-width: 100%;
      }
      .hero-stats,
      .mini-grid,
      .slot-grid {
        grid-template-columns: 1fr;
      }
      .hero-actions,
      .cta-actions {
        width: 100%;
      }
      .hero-actions .btn,
      .cta-actions .btn {
        width: 100%;
      }
      .band,
      .cta-band,
      .hero-copy,
      .hero-panel {
        padding: 18px;
      }
      .entry-body h3 {
        font-size: 16px;
      }
      .section-head h2 {
        font-size: 21px;
      }
    }