:root {
      --indigo:        oklch(42% 0.20 275);
      --indigo-light:  oklch(55% 0.18 275);
      --indigo-mid:    oklch(35% 0.20 275);
      --indigo-dark:   oklch(24% 0.18 275);
      --indigo-deeper: oklch(16% 0.14 278);
      --amber:         oklch(70% 0.18 72);
      --amber-dark:    oklch(59% 0.20 68);
      --amber-glow:    oklch(70% 0.18 72 / 0.22);
      --amber-subtle:  oklch(70% 0.18 72 / 0.10);
      --success:       oklch(55% 0.12 155);

      --bg:        oklch(98.5% 0.005 80);
      --bg-2:      oklch(96.5% 0.008 80);
      --surface:   oklch(100% 0 0);
      --border:    oklch(90% 0.008 90);
      --border-2:  oklch(85% 0.010 90);

      --text:      oklch(18% 0.015 270);
      --text-2:    oklch(38% 0.012 270);
      --text-3:    oklch(56% 0.008 270);

      --r:  10px;
      --r-lg: 16px;
      --r-xl: 24px;
      --ui: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--ui);
      font-size: 16px;
      line-height: 1.6;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
      overflow-x: hidden;
    }

    /* ===== Nav ===== */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      background: oklch(16% 0.14 278 / 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid oklch(100% 0 0 / 0.08);
    }
    .nav-inner {
      max-width: 1140px;
      margin: 0 auto;
      padding: 0 24px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      display: flex; align-items: center; gap: 10px;
      text-decoration: none; color: inherit;
    }
    .logo-mark {
      width: 32px; height: 32px; border-radius: 8px;
      background: var(--amber);
      display: grid; place-items: center;
      flex-shrink: 0;
    }
    .logo-mark svg { display: block; }
    .logo-name {
      font-size: 17px; font-weight: 700;
      color: oklch(97% 0.004 80);
      letter-spacing: -0.02em;
    }
    .logo-name span { color: var(--amber); }
    .nav-actions { display: flex; align-items: center; gap: 12px; }
    .nav-link {
      font-size: 14px; font-weight: 500;
      color: oklch(75% 0.008 270);
      text-decoration: none;
      transition: color .15s;
    }
    .nav-link:hover { color: oklch(97% 0.004 80); }
    .nav-group-divider { display: none; }
    .nav-link.active { color: var(--amber); }
    .btn-nav {
      display: inline-flex; align-items: center; gap: 7px;
      padding: 0 16px; height: 36px;
      background: var(--amber); color: var(--indigo-deeper);
      font-size: 14px; font-weight: 700;
      border-radius: 8px; text-decoration: none;
      letter-spacing: -0.01em;
      transition: background .15s, transform .08s;
      white-space: nowrap;
    }
    .btn-nav:hover { background: var(--amber-dark); }
    .btn-nav:active { transform: translateY(1px); }

    /* ===== Hero ===== */
    .hero {
      background: var(--indigo-deeper);
      padding: 140px 24px 80px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute; inset: 0;
      background:
        radial-gradient(ellipse 70% 80% at 50% 30%, oklch(42% 0.20 275 / 0.4) 0%, transparent 70%),
        radial-gradient(ellipse 30% 40% at 80% 20%, oklch(70% 0.18 72 / 0.06) 0%, transparent 60%);
      pointer-events: none;
    }
    .hero-inner { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }
    .hero h1 {
      font-size: clamp(32px, 5vw, 48px);
      font-weight: 800;
      line-height: 1.15;
      letter-spacing: -0.035em;
      color: oklch(97% 0.004 80);
      margin: 0 0 18px;
      text-wrap: balance;  /* Batch 7 landing type refinement, rolled out */
    }
    .hero-sub {
      font-size: clamp(16px, 2vw, 18px);
      color: oklch(65% 0.010 270);
      line-height: 1.65;
      margin: 0 auto 36px;
      max-width: 520px;
    }
    .hero-actions {
      display: flex; align-items: center; justify-content: center;
      gap: 16px; flex-wrap: wrap;
    }
    .btn-hero {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 0 28px; height: 52px;
      background: var(--amber); color: var(--indigo-deeper);
      font-size: 16px; font-weight: 700;
      border-radius: 12px; text-decoration: none;
      border: none; cursor: pointer;
      letter-spacing: -0.01em;
      box-shadow: 0 4px 24px var(--amber-glow), 0 1px 0 oklch(100% 0 0 / 0.2) inset;
      transition: background .15s, transform .08s, box-shadow .15s;
      white-space: nowrap;
    }
    .btn-hero:hover {
      background: var(--amber-dark);
      box-shadow: 0 6px 32px var(--amber-glow), 0 1px 0 oklch(100% 0 0 / 0.2) inset;
    }
    .btn-hero:active { transform: translateY(1px); }
    .btn-hero-ghost {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 0 20px; height: 52px;
      border: 1px solid oklch(100% 0 0 / 0.16);
      color: oklch(80% 0.008 270);
      background: transparent;
      font-size: 15px; font-weight: 500;
      border-radius: 12px; text-decoration: none;
      transition: border-color .15s, color .15s;
      white-space: nowrap;
    }
    .btn-hero-ghost:hover {
      border-color: oklch(100% 0 0 / 0.32);
      color: oklch(97% 0.004 80);
    }

    /* ===== Section commons ===== */
    .section-inner {
      max-width: 1140px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .section-label {
      font-size: 12px; font-weight: 700;
      text-transform: uppercase; letter-spacing: 0.08em;
      color: var(--indigo);
      margin-bottom: 14px;
    }
    .section-heading {
      font-size: clamp(28px, 4vw, 40px);
      font-weight: 800;
      line-height: 1.15;
      letter-spacing: -0.03em;
      color: var(--text);
      margin: 0 0 16px;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: 100px 24px;
      background: var(--surface);
    }
    .faq-inner { max-width: 700px; margin: 0 auto; }
    .faq-list { display: flex; flex-direction: column; margin-top: 48px; }
    .faq-item {
      border-bottom: 1px solid var(--border);
    }
    .faq-item:first-child { border-top: 1px solid var(--border); }
    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 20px 32px 20px 0;
      position: relative;
      font-size: 15.5px; font-weight: 700;
      color: var(--text);
      letter-spacing: -0.01em;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: '';
      position: absolute;
      right: 4px; top: 50%;
      width: 10px; height: 10px;
      border-right: 2px solid var(--text-3);
      border-bottom: 2px solid var(--text-3);
      transform: translateY(-70%) rotate(45deg);
      transition: transform .2s;
    }
    .faq-item[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
    .faq-a { font-size: 14.5px; color: var(--text-2); line-height: 1.65; margin: 0 0 20px; }
    .faq-a a { color: var(--indigo); text-decoration: underline; text-underline-offset: 2px; }

    /* ===== Final CTA ===== */
    .final-cta {
      padding: 100px 24px;
      background: var(--indigo-deeper);
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .final-cta::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse 70% 80% at 50% 50%, oklch(42% 0.20 275 / 0.4) 0%, transparent 70%);
      pointer-events: none;
    }
    .final-cta-inner { position: relative; z-index: 1; max-width: 580px; margin: 0 auto; }
    .final-cta h2 {
      font-size: clamp(28px, 4vw, 40px);
      font-weight: 800;
      letter-spacing: -0.03em;
      color: oklch(97% 0.004 80);
      margin: 0 0 16px;
    }
    .final-cta p { font-size: 17px; color: oklch(65% 0.008 270); line-height: 1.65; margin: 0 0 36px; }

    /* ===== Footer ===== */
    footer {
      background: oklch(12% 0.12 278);
      border-top: 1px solid oklch(100% 0 0 / 0.06);
      padding: 32px 24px;
    }
    .footer-inner {
      max-width: 1140px; margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between;
      flex-wrap: wrap; gap: 16px;
    }
    .footer-brand { display: flex; align-items: center; gap: 10px; }
    .footer-brand-name {
      font-size: 15px; font-weight: 700;
      color: oklch(75% 0.006 80);
      letter-spacing: -0.01em;
    }
    .footer-brand-name span { color: var(--amber); }
    .footer-copy {
      font-size: 13px;
      /* 68%: >= 4.5:1 on the 12% navy footer even through the links'
         0.7 opacity (5.2:1); the old 42% measured 2.35:1. */
      color: oklch(68% 0.006 270);
    }
    .footer-copy a { color: inherit; } /* opacity fade dropped: gamma-space blending put 13px links at 3.79:1 */

    /* ===== Mobile nav (hamburger) ===== */
    .nav-toggle { display: none; }
    @media (max-width: 768px) {
      .nav-toggle {
        display: grid; place-items: center;
        width: 40px; height: 40px;
        background: none; border: none; cursor: pointer;
        color: oklch(92% 0.01 90);
      }
      .nav-actions {
        position: absolute; top: 100%; left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 0;
        padding: 8px 0 20px;
        background: var(--indigo-deeper);
        border-top: 1px solid oklch(100% 0 0 / 0.08);
        display: none;
      }
      .nav-actions.is-open { display: flex; }
      /* Every row (link, button, select) shares the same 44px touch target
         and 20px side inset so the stacked drawer reads as one consistent
         list instead of a mix of link/button/select spacing. */
      .nav-actions .nav-link {
        display: flex; align-items: center;
        width: 100%; box-sizing: border-box;
        min-height: 44px; padding: 10px 20px;
        text-align: left;
      }
      .nav-actions .nav-link:hover { background: oklch(100% 0 0 / 0.06); color: oklch(97% 0.004 80); }
      .nav-actions .nav-group-divider {
        display: block; height: 1px; margin: 8px 20px;
        background: oklch(100% 0 0 / 0.08);
      }
      .nav-actions .nav-lang { display: flex; width: calc(100% - 40px); margin: 4px 20px; box-sizing: border-box; }
      .nav-actions .nav-lang select { width: 100% !important; max-width: none !important; height: 44px; padding-left: 32px; }
      .nav-actions .btn-nav {
        display: flex; align-items: center; justify-content: center;
        width: calc(100% - 40px); height: 44px;
        margin: 12px 20px 0;
      }
    }

    /* ===== Responsive ===== */
    @media (max-width: 600px) {
      .hero { padding: 110px 20px 60px; }
      .faq-section, .final-cta { padding: 64px 20px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .hero-actions .btn-hero, .hero-actions .btn-hero-ghost { justify-content: center; }
    }

    /* Keyboard focus: a visible ring on every interactive element. Uses
       :focus-visible so it appears for keyboard/AT users without adding a
       ring on mouse click. Amber reads on both the dark nav and light body. */
    a:focus-visible,
    button:focus-visible,
    select:focus-visible,
    summary:focus-visible,
    [tabindex]:focus-visible {
      outline: 2px solid var(--amber-dark);
      outline-offset: 2px;
      border-radius: 4px;
    }

    /* Respect the OS "reduce motion" setting. */
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
      }
    }