:root {
    --ground: #F6FAFA;
    --card: #FFFFFF;
    --ink: #0B2A36;
    --ink-2: #2D4A55;
    --muted: #55707A;
    --line: #D5E4E7;
    --wash: #E3F1F2;
    --tile: #00929E;
    --tile-ink: #00737C;
    --tile-2: #7CCBD1;
    --sun: #F2A541;
    --sun-ink: #3A2500;
    --deep: #0B3954;
    --on-deep: #EAF6F7;
    --focus: #F2A541;
    --display: "Archivo", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
    --body: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
    --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
    color-scheme: light;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --ground: #0C1E26; --card: #102832; --ink: #E6F1F3; --ink-2: #C3D6DB; --muted: #93AEB6;
      --line: #1E3A45; --wash: #133240; --tile: #1FA3AD; --tile-ink: #6FD0D7; --tile-2: #2B6F77;
      --deep: #071820; --on-deep: #E6F1F3; color-scheme: dark;
    }
  }
  :root[data-theme="dark"] {
    --ground: #0C1E26; --card: #102832; --ink: #E6F1F3; --ink-2: #C3D6DB; --muted: #93AEB6;
    --line: #1E3A45; --wash: #133240; --tile: #1FA3AD; --tile-ink: #6FD0D7; --tile-2: #2B6F77;
    --deep: #071820; --on-deep: #E6F1F3; color-scheme: dark;
  }

  * { box-sizing: border-box; }
  body { background: var(--ground); color: var(--ink); font-family: var(--body); font-size: 17px; line-height: 1.55; }
  .wrap { max-width: 1120px; margin: 0 auto; padding-inline: 20px; }
  a { color: var(--tile-ink); }
  a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
    outline: 3px solid var(--focus); outline-offset: 2px;
  }
  h1, h2, h3 { font-family: var(--display); font-stretch: 112%; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
  h2 { font-size: clamp(28px, 4vw, 40px); line-height: 1.08; font-weight: 800; }
  h3 { font-size: 20px; font-weight: 600; line-height: 1.2; }
  p { margin: 0; }
  .eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
  .lede { color: var(--ink-2); max-width: 60ch; }
  .num { font-variant-numeric: tabular-nums; }

  /* header */
  .top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: color-mix(in srgb, var(--ground) 92%, transparent); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
  .top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 12px; }
  .logo { font-family: var(--display); font-stretch: 125%; font-weight: 800; font-size: 22px; color: var(--ink); text-decoration: none; letter-spacing: -0.02em; }
  .logo span { color: var(--sun); }
  .top nav { display: flex; gap: 22px; align-items: center; font-size: 15px; }
  .top nav a { color: var(--ink-2); text-decoration: none; }
  .top nav a:hover { color: var(--ink); }
  .btn { display: inline-flex; align-items: center; gap: 8px; font: 600 16px/1 var(--body); padding: 13px 18px; border-radius: 6px; border: 0; cursor: pointer; text-decoration: none; }
  .btn-primary { background: var(--sun); color: var(--sun-ink); }
  .btn-primary:hover { filter: brightness(1.05); }
  .btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--line); }
  .top .btn { padding: 10px 14px; font-size: 14px; }
  @media (max-width: 720px) { .top nav a:not(.btn) { display: none; } }

  /* hero */
  .hero { padding-block: 56px 40px; }
  .hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
  .hero h1 { font-size: clamp(40px, 6.2vw, 72px); line-height: .98; font-weight: 800; font-stretch: 125%; letter-spacing: -0.025em; }
  .hero h1 em { font-style: normal; color: var(--tile-ink); }
  .hero .lede { margin-top: 20px; font-size: 19px; }
  .hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
  .hero .fine { margin-top: 14px; font-size: 14px; color: var(--muted); }
  @media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; gap: 36px; } }

  /* route sheet (hero artifact) */
  .sheet { background: var(--card); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 18px 40px -24px rgba(11, 42, 54, .45); overflow: hidden; }
  .sheet-head { background: var(--deep); color: var(--on-deep); padding: 14px 18px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
  .sheet-head strong { font-family: var(--display); font-stretch: 112%; font-size: 18px; }
  .sheet-head span { font-family: var(--mono); font-size: 12px; opacity: .8; }
  .sheet ol { list-style: none; margin: 0; padding: 0; }
  .sheet li { display: grid; grid-template-columns: 28px 1fr auto; gap: 4px 12px; padding: 12px 18px; border-top: 1px solid var(--line); align-items: start; }
  .sheet li:first-child { border-top: 0; }
  .stop { font-family: var(--mono); font-size: 13px; color: var(--muted); padding-top: 2px; }
  .addr { font-weight: 600; }
  .meta { grid-column: 2 / 4; font-size: 13px; color: var(--muted); }
  .chip { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; padding: 3px 7px; border-radius: 4px; white-space: nowrap; background: var(--wash); color: var(--tile-ink); align-self: center; }
  .chip.rebuild { background: color-mix(in srgb, var(--sun) 22%, var(--card)); color: var(--ink); }
  .sheet-foot { padding: 10px 18px; font-size: 12px; color: var(--muted); background: var(--wash); font-family: var(--mono); }

  /* waterline tile band */
  .waterline { height: 14px; background:
      linear-gradient(90deg, var(--ground) 1px, transparent 1px) 0 0 / 14px 14px,
      linear-gradient(0deg, var(--ground) 1px, transparent 1px) 0 0 / 14px 14px,
      linear-gradient(90deg, var(--tile), var(--tile-2) 50%, var(--tile));
    opacity: .9; }

  section { padding-block: 72px; }
  .section-head { display: grid; gap: 12px; margin-bottom: 36px; max-width: 760px; }

  /* the math */
  .facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 2px solid var(--ink); }
  .fact { padding: 22px 24px 8px 0; display: grid; gap: 8px; align-content: start; }
  .fact + .fact { padding-left: 24px; border-left: 1px solid var(--line); }
  .fact b { font-family: var(--display); font-stretch: 112%; font-weight: 800; font-size: clamp(34px, 4.4vw, 48px); line-height: 1; font-variant-numeric: tabular-nums; }
  .fact p { color: var(--ink-2); font-size: 15px; }
  .fact small { color: var(--muted); font-size: 12px; }
  @media (max-width: 800px) { .facts { grid-template-columns: 1fr; } .fact + .fact { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); } }

  /* how it works */
  .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
  .step { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 22px; display: grid; gap: 10px; align-content: start; }
  .step::before { counter-increment: step; content: "Step " counter(step); font-family: var(--mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--tile-ink); }
  .step p { color: var(--ink-2); font-size: 15px; }
  @media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

  /* anatomy of a lead */
  .anatomy { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
  .lead-card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 22px; display: grid; gap: 14px; }
  .lead-row { display: grid; grid-template-columns: 130px 1fr; gap: 12px; font-size: 15px; padding-bottom: 12px; border-bottom: 1px dashed var(--line); }
  .lead-row:last-child { border-bottom: 0; padding-bottom: 0; }
  .lead-row dt { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding-top: 3px; }
  .lead-row dd { margin: 0; }
  .ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
  .ticks li { padding-left: 28px; position: relative; color: var(--ink-2); }
  .ticks li::before { content: ""; position: absolute; left: 0; top: .45em; width: 14px; height: 14px; border-radius: 3px; background: var(--tile); box-shadow: inset 0 0 0 3px var(--card), 0 0 0 1px var(--tile); }
  .ticks strong { color: var(--ink); }
  @media (max-width: 860px) { .anatomy { grid-template-columns: 1fr; } .lead-row { grid-template-columns: 1fr; gap: 2px; } }

  /* numbers */
  .numbers { background: var(--card); border-block: 1px solid var(--line); }
  .numbers-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
  .funnel { display: grid; gap: 14px; }
  .funnel div { display: flex; justify-content: space-between; gap: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--line); font-size: 15px; color: var(--ink-2); }
  .funnel b { font-family: var(--mono); font-weight: 500; color: var(--ink); font-variant-numeric: tabular-nums; }
  .chart h3 { margin-bottom: 4px; }
  .chart .sub { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
  .bars { display: grid; gap: 6px; }
  .bar { display: grid; grid-template-columns: 64px 1fr 32px; gap: 12px; align-items: center; font-size: 14px; padding: 3px 0; border-radius: 4px; }
  .bar:hover { background: var(--wash); }
  .bar .z { font-family: var(--mono); color: var(--ink-2); }
  .bar .track { display: block; height: 16px; position: relative; }
  .bar .fill { display: block; height: 16px; background: var(--tile); border-radius: 0 4px 4px 0; }
  .bar .v { font-family: var(--mono); text-align: right; color: var(--ink); font-variant-numeric: tabular-nums; }
  .chart .note { margin-top: 14px; font-size: 12px; color: var(--muted); }
  @media (max-width: 860px) { .numbers-grid { grid-template-columns: 1fr; } }

  /* who */
  .who { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .who div { border-top: 3px solid var(--tile); padding-top: 14px; display: grid; gap: 6px; }
  .who p { font-size: 15px; color: var(--ink-2); }
  @media (max-width: 900px) { .who { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 520px) { .who { grid-template-columns: 1fr; } }

  /* pricing */
  .plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
  .plan { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 26px; display: grid; gap: 14px; grid-template-rows: auto auto 1fr auto; }
  .plan.featured { border: 2px solid var(--ink); }
  .plan .tag { font-family: var(--mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--tile-ink); }
  .price { font-family: var(--display); font-stretch: 112%; font-weight: 800; font-size: 46px; line-height: 1; }
  .price small { font-family: var(--body); font-size: 15px; font-weight: 400; color: var(--muted); }
  .plan ul { margin: 0; padding-left: 18px; color: var(--ink-2); font-size: 15px; display: grid; gap: 6px; }
  .plan .btn { justify-content: center; }
  .price-note { margin-top: 18px; font-size: 14px; color: var(--muted); }
  @media (max-width: 900px) { .plans { grid-template-columns: 1fr; } }

  /* faq */
  .faq { display: grid; gap: 0; border-top: 1px solid var(--line); max-width: 820px; }
  .faq details { border-bottom: 1px solid var(--line); padding-block: 16px; }
  .faq summary { cursor: pointer; font-weight: 600; font-size: 18px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary::after { content: "+"; font-family: var(--mono); color: var(--tile-ink); }
  .faq details[open] summary::after { content: "–"; }
  .faq details p { margin-top: 10px; color: var(--ink-2); max-width: 68ch; }

  /* form */
  .signup { background: var(--deep); color: var(--on-deep); }
  .signup .wrap { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
  .signup h2 { color: var(--on-deep); }
  .signup .lede { color: color-mix(in srgb, var(--on-deep) 80%, transparent); margin-top: 14px; }
  form { background: var(--card); color: var(--ink); border-radius: 10px; padding: 24px; display: grid; gap: 14px; }
  .field { display: grid; gap: 6px; }
  .field label { font-size: 14px; font-weight: 600; }
  .field .hint { font-size: 12px; color: var(--muted); font-weight: 400; }
  input, select, textarea { font: 16px var(--body); color: var(--ink); background: var(--ground); border: 1px solid var(--line); border-radius: 6px; padding: 11px 12px; width: 100%; }
  .two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .form-status { font-size: 14px; padding: 12px; border-radius: 6px; background: var(--wash); color: var(--ink); }
  .consent { font-size: 12px; color: var(--muted); }
  @media (max-width: 860px) { .signup .wrap { grid-template-columns: 1fr; } .two { grid-template-columns: 1fr; } }

  footer { padding-block: 32px 48px; font-size: 13px; color: var(--muted); }
  footer .wrap { display: grid; gap: 8px; }
  @media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }
  html { scroll-behavior: smooth; }

/* payment screen */
.join .plans { align-items: stretch; }
.join .plan button { width: 100%; }
.join .plan.featured { box-shadow: 0 10px 30px -18px rgba(11,42,54,.5); }