:root {
    --bg: #ffffff;
    --bg-alt: #f7f7f7;
    --border: #e2e2e2;
    --border-soft: #ececec;
    --text: #111111;
    --text-muted: #666666;
    --text-faint: #999999;
    --accent: #000000;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
  }

  .num {
    font-family: "SF Mono", "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
    font-variant-numeric: tabular-nums;
  }

  .wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

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

  /* ---- nav ---- */
  nav {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-soft);
  }
  nav .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
  }
  .logo {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.08em;
  }
  .nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    font-size: 14px;
    color: var(--text-muted);
  }
  .nav-links a:hover { color: var(--text); }
  .btn {
    display: inline-block;
    padding: 10px 20px;
    border: 1px solid var(--accent);
    border-radius: 3px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    transition: background 0.2s ease, color 0.2s ease;
  }
  .btn:hover { background: var(--accent); color: #ffffff; }
  .btn-solid {
    background: var(--accent);
    color: #ffffff;
  }
  .btn-solid:hover { opacity: 0.8; background: var(--accent); }

  /* ---- hero ---- */
  .hero {
    padding: 110px 0 90px;
    text-align: center;
    border-bottom: 1px solid var(--border-soft);
  }
  .brand-heading {
    font-size: clamp(56px, 11vw, 128px);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 28px;
  }
  .tagline {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 600;
    margin-bottom: 10px;
  }
  .hero .sub {
    font-size: clamp(15px, 2vw, 18px);
    color: var(--text-muted);
    max-width: 480px;
    margin: 0 auto 40px;
  }
  .hero-ctas {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
  }
  .link-ghost {
    font-size: 14px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    padding-bottom: 2px;
  }
  .link-ghost:hover { color: var(--text); border-color: var(--text-muted); }

  /* ---- stat strip ---- */
  .stat-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-bottom: 1px solid var(--border-soft);
  }
  .stat-block {
    text-align: center;
    padding: 44px 20px;
    border-left: 1px solid var(--border-soft);
  }
  .stat-block:first-child { border-left: none; }
  .stat-block .figure {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--accent);
  }
  .stat-block .label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
  }

  /* ---- section shared ---- */
  section { padding: 90px 0; }
  .section-eyebrow {
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 14px;
  }
  .section-title {
    font-size: clamp(24px, 3.5vw, 32px);
    font-weight: 700;
    letter-spacing: -0.01em;
    max-width: 560px;
    margin-bottom: 16px;
  }
  .section-sub {
    color: var(--text-muted);
    font-size: 15px;
    max-width: 520px;
    margin-bottom: 50px;
  }

  /* ---- how it works ---- */
  .steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
  }
  .step-num {
    font-family: "SF Mono", "IBM Plex Mono", ui-monospace, monospace;
    font-size: 13px;
    color: var(--text-faint);
    margin-bottom: 16px;
  }
  .step h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
  }
  .step p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
  }

  /* ---- calculator ---- */
  .calc-section { background: var(--bg-alt); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
  .calc-box { max-width: 640px; margin: 0 auto; }
  .input-group { margin-bottom: 26px; }
  .input-group label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 10px;
  }
  .input-row { display: flex; align-items: center; gap: 16px; }
  .value-display {
    min-width: 90px;
    text-align: right;
    font-size: 17px;
    font-weight: 600;
    flex-shrink: 0;
  }
  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 3px;
    background: var(--border);
    outline: none;
  }
  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 2px;
    cursor: pointer;
  }
  input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent);
    border: none;
    border-radius: 2px;
    cursor: pointer;
  }
  .calc-result {
    margin-top: 40px;
    padding-top: 36px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 20px;
  }
  .calc-result .lead {
    font-size: 13px;
    color: var(--text-muted);
  }
  .calc-result .figure {
    font-size: clamp(26px, 4vw, 36px);
    font-weight: 700;
    color: var(--accent);
  }

  /* ---- pricing ---- */
  .pricing-card {
    max-width: 420px;
    margin: 0 auto;
    border: 1px solid var(--text);
    border-radius: 6px;
    padding: 44px 36px;
    text-align: center;
  }
  .price-row { margin-bottom: 28px; }
  .price-amount {
    font-size: 44px;
    font-weight: 700;
  }
  .price-note {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
  }
  .price-then { color: var(--text-muted); font-size: 14px; margin: 18px 0 28px; }
  .price-list {
    list-style: none;
    text-align: left;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 32px;
  }
  .price-list li {
    padding: 10px 0;
    border-top: 1px solid var(--border-soft);
  }
  .price-list li:first-child { border-top: none; }
  .price-list li::before {
    content: "—";
    color: var(--accent);
    margin-right: 10px;
  }

  /* ---- contact ---- */
  .contact-section { text-align: center; }
  .contact-links {
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-items: center;
    margin-top: 36px;
  }
  .contact-links a {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 600;
    border-bottom: 1px solid transparent;
  }
  .contact-links a:hover { border-color: var(--text); }

  footer {
    border-top: 1px solid var(--border-soft);
    padding: 32px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-faint);
  }

  @media (max-width: 720px) {
    .stat-strip { grid-template-columns: 1fr; }
    .stat-block { border-left: none; border-top: 1px solid var(--border-soft); }
    .stat-block:first-child { border-top: none; }
    .steps { grid-template-columns: 1fr; }
    .nav-links { display: none; }
  }

  /* ---- why-choose section (replaces fabricated reviews) ---- */
  .why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .why-item {
    border-top: 1px solid var(--border);
    padding-top: 20px;
  }
  .why-item h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
  }
  .why-item p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
  }
  .founding-note {
    margin-top: 44px;
    border: 1px solid var(--text);
    border-radius: 6px;
    padding: 28px 32px;
  }
  .founding-note .tag {
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 10px;
  }
  .founding-note p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
  }

  /* ---- referral callout ---- */
  .referral-box {
    max-width: 420px;
    margin: 20px auto 0;
    border: 1px dashed var(--border);
    border-radius: 6px;
    padding: 20px 28px;
    text-align: left;
  }
  .referral-box .tag {
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 700;
    margin-bottom: 8px;
  }
  .referral-box p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
  }
  .referral-box strong { color: var(--text); }

  /* ---- legal pages ---- */
  .legal-page .wrap { max-width: 720px; }
  .legal-page h1 {
    font-size: clamp(28px, 4vw, 38px);
    font-weight: 700;
    margin-bottom: 8px;
  }
  .legal-updated {
    font-size: 13px;
    color: var(--text-faint);
    margin-bottom: 48px;
  }
  .legal-page h2 {
    font-size: 18px;
    font-weight: 700;
    margin: 40px 0 12px;
  }
  .legal-page p, .legal-page li {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 12px;
  }
  .legal-page ul { padding-left: 20px; margin-bottom: 16px; }
  .legal-note {
    margin-top: 50px;
    padding-top: 24px;
    border-top: 1px solid var(--border-soft);
    font-size: 13px;
    color: var(--text-faint);
    font-style: italic;
  }

  @media (max-width: 640px) {
    .why-grid { grid-template-columns: 1fr; }
  }

  /* ---- 3-tier pricing grid ---- */
  .pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 940px;
    margin: 0 auto;
    align-items: stretch;
  }
  .pricing-grid .pricing-card {
    max-width: none;
    padding: 40px 26px 32px;
    position: relative;
    display: flex;
    flex-direction: column;
  }
  .pricing-grid .pricing-card .btn { margin-top: auto; }
  .pricing-card.featured {
    border: 2px solid var(--text);
  }
  .plan-name {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 18px;
  }
  .tag-pill {
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text);
    color: var(--bg);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 20px;
    white-space: nowrap;
  }

  @media (max-width: 780px) {
    .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }
  }

  /* ---- FAQ ---- */
  .faq-list { max-width: 720px; margin: 0 auto; }
  .faq-item { border-bottom: 1px solid var(--border); }
  .faq-item summary {
    cursor: pointer;
    padding: 22px 0;
    font-size: 16px;
    font-weight: 600;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary::after {
    content: "+";
    font-size: 22px;
    color: var(--text-muted);
    flex-shrink: 0;
  }
  .faq-item[open] summary::after { content: "–"; }
  .faq-item p {
    padding: 0 0 22px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 600px;
  }