:root {
      --bg: #f4faf8;
      --surface: rgba(255, 255, 255, 0.88);
      --surface-strong: #ffffff;
      --text: #101827;
      --muted: #62758d;
      --line: #d7e6e2;
      --primary: #0e7d73;
      --primary-dark: #08685f;
      --secondary: #15978b;
      --accent: #18b99f;
      --shadow: 0 22px 70px rgba(25, 78, 73, 0.13);
      --radius-lg: 30px;
      --radius-md: 22px;
      --radius-sm: 14px;
      --container: 1240px;
    }

    * {
      box-sizing: border-box;
    }

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

    body {
      margin: 0;
      font-family:
        Inter, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei",
        system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 8% 12%, rgba(103, 217, 198, 0.22), transparent 34%),
        radial-gradient(circle at 92% 18%, rgba(177, 211, 231, 0.24), transparent 31%),
        linear-gradient(180deg, #f9fcfb 0%, #eef8f5 48%, #f7fbfc 100%);
      line-height: 1.7;
    }

    a {
      color: inherit;
    }

    button,
    a {
      -webkit-tap-highlight-color: transparent;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(18px);
      background: rgba(248, 250, 252, 0.90);
      border-bottom: 1px solid rgba(205, 224, 220, 0.94);
    }

    .header-inner {
      width: min(var(--container), calc(100% - 36px));
      min-height: 76px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      font-size: 1.08rem;
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      color: #fff;
      font-weight: 900;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 10px 26px rgba(14, 125, 115, 0.30);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 18px;
      border: 0;
      border-radius: 999px;
      text-decoration: none;
      font-weight: 750;
      transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 12px 30px rgba(14, 125, 115, 0.26);
    }

    .btn-secondary {
      color: var(--primary-dark);
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid var(--line);
    }

    .graph-note {
      position: relative;
      z-index: 4;
      width: min(100%, 500px);
      margin: 14px auto 0;
      color: var(--muted);
      font-size: 0.9rem;
      text-align: center;
    }

    .understanding-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(300px, 0.82fr);
      gap: 28px;
      align-items: start;
      margin-top: 30px;
    }

    .search-preview {
      padding: 20px;
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 18px 46px rgba(25, 78, 73, 0.12);
    }

    .search-preview-label {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      color: var(--muted);
      font-size: 0.78rem;
      font-weight: 850;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .search-preview-label::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(16, 185, 129, 0.11);
    }

    .search-query {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 46px;
      padding: 0 15px;
      margin-bottom: 17px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--text);
      background: #f8fbfa;
      font-size: 0.92rem;
    }

    .search-query span {
      color: var(--primary);
      font-weight: 900;
    }

    .answer-card {
      padding: 18px;
      border-radius: 16px;
      background: linear-gradient(150deg, #f7fbfa, #edf8f5);
      border: 1px solid rgba(14, 125, 115, 0.14);
    }

    .answer-card strong {
      display: block;
      margin-bottom: 9px;
      font-size: 1rem;
    }

    .answer-card p {
      margin-bottom: 12px;
      color: var(--muted);
      font-size: 0.9rem;
    }

    .answer-source {
      display: flex;
      align-items: center;
      gap: 9px;
      padding-top: 12px;
      border-top: 1px solid rgba(14, 125, 115, 0.12);
      color: var(--primary-dark);
      font-size: 0.82rem;
      font-weight: 800;
    }

    .answer-source::before {
      content: "S";
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 9px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
    }

    .preview-caption {
      margin: 12px 2px 0;
      color: var(--muted);
      font-size: 0.78rem;
      text-align: center;
    }


    .benefits-intro {
      width: min(var(--container), calc(100% - 36px));
      margin: 0 auto;
      padding: 76px 0 26px;
    }

    .benefits-intro h1 {
      max-width: 860px;
      margin: 20px 0 18px;
      font-size: clamp(2.5rem, 5.5vw, 5rem);
      line-height: 1.06;
      letter-spacing: -0.05em;
    }

    .benefits-intro p {
      max-width: 820px;
      margin: 0;
      color: var(--muted);
      font-size: clamp(1.02rem, 1.8vw, 1.2rem);
    }

    .benefits-shell {
      width: min(var(--container), calc(100% - 36px));
      margin: 0 auto;
      padding: 42px 0 96px;
      display: grid;
      grid-template-columns: 300px minmax(0, 1fr);
      gap: 66px;
      align-items: start;
    }

    .benefits-nav {
      position: sticky;
      top: 112px;
      padding: 24px;
      border-radius: var(--radius-md);
      background: var(--surface);
      border: 1px solid rgba(219, 228, 243, 0.9);
      box-shadow: 0 18px 50px rgba(25, 78, 73, 0.09);
      backdrop-filter: blur(16px);
    }

    .nav-kicker {
      margin-bottom: 18px;
      color: var(--muted);
      font-size: 0.78rem;
      font-weight: 850;
      text-transform: uppercase;
      letter-spacing: 0.12em;
    }

    .benefits-nav a {
      position: relative;
      display: block;
      padding: 13px 14px 13px 34px;
      border-radius: 13px;
      color: var(--muted);
      text-decoration: none;
      font-weight: 750;
      transition: color 0.22s ease, background 0.22s ease, transform 0.22s ease;
    }

    .benefits-nav a::before {
      content: "";
      position: absolute;
      left: 14px;
      top: 50%;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      transform: translateY(-50%);
      background: #c6d0df;
      transition: all 0.22s ease;
    }

    .benefits-nav a:hover {
      color: var(--text);
      background: rgba(14, 125, 115, 0.06);
    }

    .benefits-nav a.active {
      color: var(--primary-dark);
      background: linear-gradient(90deg, rgba(14, 125, 115, 0.12), rgba(123, 97, 255, 0.05));
      transform: translateX(4px);
    }

    .benefits-nav a.active::before {
      width: 10px;
      height: 10px;
      background: var(--primary);
      box-shadow: 0 0 0 6px rgba(14, 125, 115, 0.12);
    }

    .benefits-content {
      min-width: 0;
    }

    .benefit-section {
      min-height: 78vh;
      display: grid;
      align-items: center;
      padding: 42px 0;
      scroll-margin-top: 105px;
    }

    .benefit-card {
      position: relative;
      overflow: hidden;
      padding: clamp(30px, 5vw, 58px);
      border-radius: var(--radius-lg);
      border: 1px solid rgba(218, 227, 244, 0.95);
      background: linear-gradient(150deg, rgba(255, 255, 255, 0.99), rgba(245, 251, 249, 0.94));
      box-shadow: var(--shadow);
    }

    .benefit-card::after {
      content: "";
      position: absolute;
      width: 230px;
      height: 230px;
      right: -90px;
      top: -90px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(14, 125, 115, 0.16), transparent 68%);
    }

    .section-number {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 18px;
      color: var(--primary-dark);
      font-weight: 850;
      letter-spacing: 0.05em;
    }

    .section-number span {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 10px 24px rgba(14, 125, 115, 0.22);
    }

    .benefit-card h2 {
      max-width: 720px;
      margin-bottom: 18px;
      font-size: clamp(2rem, 4vw, 3.7rem);
      line-height: 1.08;
      letter-spacing: -0.04em;
    }

    .benefit-lead {
      max-width: 760px;
      margin-bottom: 30px;
      color: var(--muted);
      font-size: 1.08rem;
    }

    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 15px;
    }

    .mini-card {
      padding: 20px;
      border-radius: var(--radius-sm);
      background: rgba(247, 251, 250, 0.94);
      border: 1px solid rgba(218, 227, 244, 0.9);
    }

    .mini-card strong {
      display: block;
      margin-bottom: 5px;
      color: var(--text);
    }

    .mini-card p {
      margin: 0;
      color: var(--muted);
      font-size: 0.94rem;
    }

    .code-panel {
      margin-top: 28px;
      padding: 22px;
      border-radius: 18px;
      color: #dff7f1;
      background: #102a2b;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.07);
      font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
      font-size: 0.9rem;
      overflow-x: auto;
    }

    .code-panel .key { color: #8ee6d6; }
    .code-panel .value { color: #9ce8ca; }
    .code-panel .string { color: #b9e6dc; }

    .cta-section {
      width: min(var(--container), calc(100% - 36px));
      margin: 0 auto 80px;
      padding: clamp(34px, 6vw, 72px);
      text-align: center;
      border-radius: 34px;
      color: #fff;
      background:
        radial-gradient(circle at 20% 20%, rgba(255,255,255,0.16), transparent 25%),
        linear-gradient(135deg, #0b756b, #149286);
      box-shadow: 0 30px 80px rgba(73, 105, 245, 0.3);
    }

    .cta-section h2 {
      margin-bottom: 18px;
      font-size: clamp(2rem, 4.5vw, 4rem);
      line-height: 1.08;
      letter-spacing: -0.04em;
    }

    .cta-section p {
      max-width: 720px;
      margin: 0 auto 28px;
      color: rgba(255, 255, 255, 0.82);
      font-size: 1.06rem;
    }

    .cta-section .btn-primary {
      color: var(--primary-dark);
      background: #fff;
      box-shadow: none;
    }

    .site-footer {
      padding: 0 18px 36px;
      color: var(--muted);
      text-align: center;
      font-size: 0.9rem;
    }

    .mobile-progress {
      display: none;
    }

    @media (max-width: 980px) {

    .graph-note {
      position: relative;
      z-index: 4;
      width: min(100%, 500px);
      margin: 14px auto 0;
      color: var(--muted);
      font-size: 0.9rem;
      text-align: center;
    }

    .understanding-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(300px, 0.82fr);
      gap: 28px;
      align-items: start;
      margin-top: 30px;
    }

    .search-preview {
      padding: 20px;
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 18px 46px rgba(25, 78, 73, 0.12);
    }

    .search-preview-label {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      color: var(--muted);
      font-size: 0.78rem;
      font-weight: 850;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .search-preview-label::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(16, 185, 129, 0.11);
    }

    .search-query {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 46px;
      padding: 0 15px;
      margin-bottom: 17px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--text);
      background: #f8fbfa;
      font-size: 0.92rem;
    }

    .search-query span {
      color: var(--primary);
      font-weight: 900;
    }

    .answer-card {
      padding: 18px;
      border-radius: 16px;
      background: linear-gradient(150deg, #f7fbfa, #edf8f5);
      border: 1px solid rgba(14, 125, 115, 0.14);
    }

    .answer-card strong {
      display: block;
      margin-bottom: 9px;
      font-size: 1rem;
    }

    .answer-card p {
      margin-bottom: 12px;
      color: var(--muted);
      font-size: 0.9rem;
    }

    .answer-source {
      display: flex;
      align-items: center;
      gap: 9px;
      padding-top: 12px;
      border-top: 1px solid rgba(14, 125, 115, 0.12);
      color: var(--primary-dark);
      font-size: 0.82rem;
      font-weight: 800;
    }

    .answer-source::before {
      content: "S";
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 9px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
    }

    .preview-caption {
      margin: 12px 2px 0;
      color: var(--muted);
      font-size: 0.78rem;
      text-align: center;
    }


    .benefits-intro {
      width: min(var(--container), calc(100% - 36px));
      margin: 0 auto;
      padding: 76px 0 26px;
    }

    .benefits-intro h1 {
      max-width: 860px;
      margin: 20px 0 18px;
      font-size: clamp(2.5rem, 5.5vw, 5rem);
      line-height: 1.06;
      letter-spacing: -0.05em;
    }

    .benefits-intro p {
      max-width: 820px;
      margin: 0;
      color: var(--muted);
      font-size: clamp(1.02rem, 1.8vw, 1.2rem);
    }

    .benefits-shell {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .benefits-nav {
        display: none;
      }

      .mobile-progress {
        position: sticky;
        top: 76px;
        z-index: 900;
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 16px;
        margin-bottom: 10px;
        border-radius: 16px;
        background: rgba(255,255,255,0.92);
        border: 1px solid var(--line);
        backdrop-filter: blur(14px);
        box-shadow: 0 12px 28px rgba(48,70,128,0.08);
      }

      .mobile-progress-bar {
        flex: 1;
        height: 8px;
        overflow: hidden;
        border-radius: 999px;
        background: #dfece8;
      }

      .mobile-progress-bar span {
        display: block;
        width: 11.11%;
        height: 100%;
        border-radius: inherit;
        background: linear-gradient(90deg, var(--primary), var(--secondary));
        transition: width 0.28s ease;
      }

      .benefit-section {
        min-height: auto;
        padding: 28px 0;
      }
    }

    @media (max-width: 680px) {
      .benefits-intro {
        width: min(100% - 24px, var(--container));
        padding: 52px 0 14px;
      }

      .benefits-intro h1 {
        font-size: clamp(2.35rem, 12vw, 3.8rem);
      }

      .header-inner {
        min-height: 68px;
      }

      .header-actions .btn-secondary {
        display: none;
      }

      .btn {
        min-height: 42px;
        padding: 0 15px;
        font-size: 0.92rem;
      }


    .graph-note {
      position: relative;
      z-index: 4;
      width: min(100%, 500px);
      margin: 14px auto 0;
      color: var(--muted);
      font-size: 0.9rem;
      text-align: center;
    }

    .understanding-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(300px, 0.82fr);
      gap: 28px;
      align-items: start;
      margin-top: 30px;
    }

    .search-preview {
      padding: 20px;
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 18px 46px rgba(25, 78, 73, 0.12);
    }

    .search-preview-label {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      color: var(--muted);
      font-size: 0.78rem;
      font-weight: 850;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .search-preview-label::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(16, 185, 129, 0.11);
    }

    .search-query {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 46px;
      padding: 0 15px;
      margin-bottom: 17px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--text);
      background: #f8fbfa;
      font-size: 0.92rem;
    }

    .search-query span {
      color: var(--primary);
      font-weight: 900;
    }

    .answer-card {
      padding: 18px;
      border-radius: 16px;
      background: linear-gradient(150deg, #f7fbfa, #edf8f5);
      border: 1px solid rgba(14, 125, 115, 0.14);
    }

    .answer-card strong {
      display: block;
      margin-bottom: 9px;
      font-size: 1rem;
    }

    .answer-card p {
      margin-bottom: 12px;
      color: var(--muted);
      font-size: 0.9rem;
    }

    .answer-source {
      display: flex;
      align-items: center;
      gap: 9px;
      padding-top: 12px;
      border-top: 1px solid rgba(14, 125, 115, 0.12);
      color: var(--primary-dark);
      font-size: 0.82rem;
      font-weight: 800;
    }

    .answer-source::before {
      content: "S";
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 9px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
    }

    .preview-caption {
      margin: 12px 2px 0;
      color: var(--muted);
      font-size: 0.78rem;
      text-align: center;
    }


    .benefits-intro {
      width: min(var(--container), calc(100% - 36px));
      margin: 0 auto;
      padding: 76px 0 26px;
    }

    .benefits-intro h1 {
      max-width: 860px;
      margin: 20px 0 18px;
      font-size: clamp(2.5rem, 5.5vw, 5rem);
      line-height: 1.06;
      letter-spacing: -0.05em;
    }

    .benefits-intro p {
      max-width: 820px;
      margin: 0;
      color: var(--muted);
      font-size: clamp(1.02rem, 1.8vw, 1.2rem);
    }

    .benefits-shell {
        width: min(100% - 24px, var(--container));
      }

      .benefit-card {
        padding: 27px 22px;
        border-radius: 24px;
      }

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

      .cta-section {
        width: min(100% - 24px, var(--container));
        margin-bottom: 50px;
        border-radius: 26px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }

    /* RWD enhancements */
    img,
    svg,
    video,
    canvas {
      max-width: 100%;
      height: auto;
    }

    .benefits-content,
    .benefit-card,
    .understanding-layout,
    .search-preview,
    .code-panel {
      min-width: 0;
    }

    .code-panel {
      white-space: pre-wrap;
      overflow-wrap: anywhere;
      word-break: break-word;
    }

    @media (max-width: 1180px) {
      .benefits-shell {
        grid-template-columns: 260px minmax(0, 1fr);
        gap: 40px;
      }

      .benefits-nav {
        padding: 20px;
      }

      .benefits-nav a {
        padding: 12px 12px 12px 32px;
        font-size: 0.94rem;
      }
    }

    @media (max-width: 980px) {
      .benefits-intro {
        padding-top: 58px;
      }

      .benefits-shell {
        grid-template-columns: 1fr;
        gap: 20px;
        padding-top: 20px;
      }

      .benefits-nav {
        display: none;
      }

      .mobile-progress {
        display: flex;
      }

      .benefit-section {
        min-height: auto;
        padding: 24px 0;
      }

      .understanding-layout {
        grid-template-columns: 1fr;
      }

      .benefit-card {
        padding: clamp(28px, 5vw, 44px);
      }
    }

    @media (max-width: 760px) {
      .header-inner {
        width: min(100% - 24px, var(--container));
        min-height: 68px;
      }

      .brand {
        font-size: 1rem;
      }

      .brand-mark {
        width: 34px;
        height: 34px;
        border-radius: 11px;
      }

      .header-actions {
        gap: 8px;
      }

      .header-actions .btn-secondary {
        display: none;
      }

      .btn {
        min-height: 40px;
        padding: 0 14px;
        font-size: 0.9rem;
      }

      .benefits-intro {
        width: min(100% - 24px, var(--container));
        padding: 46px 0 10px;
      }

      .benefits-intro h1 {
        font-size: clamp(2.2rem, 10vw, 3.4rem);
        line-height: 1.08;
      }

      .benefits-intro p {
        font-size: 1rem;
      }

      .benefits-shell {
        width: min(100% - 24px, var(--container));
      }

      .mobile-progress {
        top: 74px;
        padding: 10px 12px;
        border-radius: 14px;
      }

      .mobile-progress strong {
        max-width: 56%;
        font-size: 0.88rem;
        line-height: 1.3;
      }

      .benefit-card {
        padding: 26px 20px;
        border-radius: 22px;
      }

      .benefit-card h2 {
        font-size: clamp(1.85rem, 8vw, 2.75rem);
      }

      .benefit-lead {
        margin-bottom: 24px;
        font-size: 1rem;
      }

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

      .mini-card {
        padding: 17px;
      }

      .understanding-layout {
        gap: 20px;
      }

      .search-preview {
        padding: 16px;
        border-radius: 18px;
      }

      .search-query {
        min-height: 44px;
        padding: 0 13px;
        font-size: 0.86rem;
      }

      .answer-card {
        padding: 16px;
      }

      .code-panel {
        padding: 17px;
        font-size: 0.8rem;
        line-height: 1.6;
      }

      .cta-section {
        width: min(100% - 24px, var(--container));
        margin-bottom: 48px;
        padding: 38px 22px;
        border-radius: 24px;
      }

      .cta-section h2 {
        font-size: clamp(1.9rem, 8vw, 2.8rem);
      }

      .cta-section .btn {
        width: 100%;
      }
    }

    @media (max-width: 480px) {
      html {
        scroll-padding-top: 86px;
      }

      .site-header {
        position: sticky;
      }

      .header-inner {
        width: min(100% - 20px, var(--container));
      }

      .brand span:last-child {
        display: none;
      }

      .benefits-intro,
      .benefits-shell,
      .cta-section {
        width: min(100% - 20px, var(--container));
      }

      .benefits-intro {
        padding-top: 36px;
      }

      .eyebrow {
        padding: 7px 11px;
        font-size: 0.78rem;
      }

      .benefits-intro h1 {
        margin-top: 16px;
        font-size: clamp(2rem, 11vw, 2.8rem);
      }

      .mobile-progress {
        top: 68px;
        gap: 9px;
      }

      .mobile-progress strong {
        max-width: 62%;
        font-size: 0.8rem;
      }

      .benefit-section {
        padding: 18px 0;
        scroll-margin-top: 96px;
      }

      .benefit-card {
        padding: 23px 17px;
        border-radius: 20px;
      }

      .section-number {
        gap: 8px;
        margin-bottom: 14px;
        font-size: 0.82rem;
      }

      .section-number span {
        width: 34px;
        height: 34px;
        border-radius: 10px;
      }

      .benefit-card h2 {
        margin-bottom: 15px;
        font-size: clamp(1.72rem, 9vw, 2.35rem);
      }

      .benefit-lead {
        font-size: 0.96rem;
        line-height: 1.75;
      }

      .mini-card strong {
        font-size: 0.96rem;
      }

      .mini-card p,
      .answer-card p {
        font-size: 0.88rem;
      }

      .search-preview-label {
        font-size: 0.72rem;
      }

      .search-query {
        font-size: 0.8rem;
      }

      .answer-source {
        font-size: 0.76rem;
      }

      .preview-caption {
        font-size: 0.72rem;
      }

      .code-panel {
        margin-top: 20px;
        padding: 14px;
        font-size: 0.72rem;
      }

      .cta-section {
        padding: 32px 18px;
      }
    }
    .header-nav-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 0 12px;
      border-radius: 999px;
      color: var(--muted);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 800;
      white-space: nowrap;
      transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
    }

    .header-nav-link:hover,
    .header-nav-link.is-active {
      color: var(--primary-dark);
      background: rgba(14, 125, 115, 0.08);
    }

    @media (max-width: 980px) {
      .site-header {
        position: sticky;
      }

      .header-inner {
        min-height: auto;
        padding: 12px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
      }

      .header-actions {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
      }

      .header-actions .btn,
      .header-nav-link {
        width: 100%;
        min-height: 38px;
        padding: 0 10px;
        font-size: 0.84rem;
      }
    }

    @media (max-width: 420px) {
      .header-actions {
        grid-template-columns: 1fr;
      }
    }