:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --band: #eef0ec;
  --ink: #0f1f2b;
  --ink-2: #44535e;
  --muted: #7a8790;
  --line: #dfe2dd;
  --brand: #0f2a3d;
  --accent: #128a72;
  --accent-soft: #d9f1ea;
  --accent-ink: #0b6b58;
  --warn: #c9851b;
  --shadow: 0 1px 2px rgba(15, 31, 43, .06), 0 12px 40px -12px rgba(15, 31, 43, .18);

  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b141b;
    --surface: #111d26;
    --band: #0f1a22;
    --ink: #e8eef1;
    --ink-2: #a9b6be;
    --muted: #74838d;
    --line: #22323d;
    --brand: #0f2a3d;
    --accent: #50d1b2;
    --accent-soft: #123a33;
    --accent-ink: #7fe3ca;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 16px 48px -12px rgba(0, 0, 0, .6);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p { margin: 0; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--mono); font-size: 13px; }
.small { font-size: 12px; }
.muted { color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 20px; border-radius: 8px;
  background: var(--accent); color: #fff;
  font-weight: 600; font-size: 15px;
  transition: transform .15s ease, filter .15s ease;
}
@media (prefers-color-scheme: dark) { .btn { color: #06201a; } }
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn--small { padding: 8px 14px; font-size: 14px; }
.btn--ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn--ghost:hover { border-color: var(--ink-2); filter: none; }
.btn--light { background: #fff; color: var(--brand); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav__links { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--ink-2); }
.nav__links a:not(.btn):hover { color: var(--ink); }

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand__mark {
  display: grid; place-items: center;
  width: 32px; height: 32px; border-radius: 7px;
  background: var(--brand); color: #50d1b2;
  font: 700 13px/1 var(--sans); letter-spacing: .02em;
}
.brand__name { font-weight: 600; letter-spacing: .16em; font-size: 14px; }

/* Hero */
.hero { padding: 88px 0 96px; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent-ink);
  margin-bottom: 20px;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
h1 {
  font: 400 clamp(44px, 6vw, 72px)/1.04 var(--serif);
  letter-spacing: -.02em;
}
h1 em { font-style: italic; color: var(--accent-ink); }
.lede { margin-top: 24px; font-size: 19px; color: var(--ink-2); max-width: 520px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.tagline { margin-top: 28px; font-size: 14px; color: var(--muted); }

/* Mock */
.mock {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  transform: rotate(-.6deg);
}
.mock__bar {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
}
.mock__bar span { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
.mock__bar p { margin-left: 10px; color: var(--muted); font-size: 12px; }
.mock__body { padding: 22px; display: grid; gap: 20px; }
.mock__head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.mock__label {
  font: 500 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 8px;
}
.mock__title { font: 600 18px/1.3 var(--sans); }
.pill {
  flex-shrink: 0;
  font: 500 12px/1 var(--sans); padding: 6px 10px; border-radius: 999px;
}
.pill--ok { background: var(--accent-soft); color: var(--accent-ink); }

.mock__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat { padding: 14px; border: 1px solid var(--line); border-radius: 10px; display: grid; gap: 6px; }
.stat .mock__label { margin-bottom: 2px; }
.meter { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; }
.meter span { display: block; height: 100%; background: var(--accent); border-radius: inherit; }

.mock__lifecycle { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.step {
  position: relative; text-align: center;
  font: 500 12px/1 var(--sans); color: var(--muted);
  padding: 10px 4px; border-radius: 6px; background: var(--band);
}
.step.is-done { color: var(--accent-ink); background: var(--accent-soft); }
.step.is-active { color: #fff; background: var(--accent); }
@media (prefers-color-scheme: dark) { .step.is-active { color: #06201a; } }

.mock__audit ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.mock__audit li { font-size: 13px; color: var(--ink-2); display: flex; gap: 12px; }
.mock__audit li b { color: var(--ink); font-weight: 500; }

/* Sections */
.section { padding: 104px 0; }
.section--band { background: var(--band); border-block: 1px solid var(--line); }
h2 {
  font: 400 clamp(32px, 4vw, 46px)/1.1 var(--serif);
  letter-spacing: -.015em; max-width: 720px;
}
.section__lede { margin-top: 18px; font-size: 18px; color: var(--ink-2); max-width: 620px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  padding: 28px; transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card__icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent-ink);
  margin-bottom: 22px;
}
.card__icon svg { width: 22px; height: 22px; }
.card h3 { font: 600 19px/1.35 var(--sans); letter-spacing: -.01em; }
.card p { margin-top: 12px; color: var(--ink-2); font-size: 15px; }

/* Trace */
.trace {
  list-style: none; margin: 56px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  counter-reset: t;
}
.trace li { position: relative; padding: 28px 28px 0 0; border-top: 2px solid var(--line); }
.trace li::before {
  content: ""; position: absolute; top: -7px; left: 0;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
}
.trace li:last-child::before { background: var(--accent); }
.trace li:last-child { border-top-color: var(--accent); }
.trace__n { color: var(--accent-ink); font-size: 12px; }
.trace h4 { font: 600 18px/1.3 var(--sans); margin: 8px 0 8px; }
.trace p { color: var(--ink-2); font-size: 15px; }

/* CTA */
.cta {
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
  background: var(--brand); color: #e8eef1;
  border-radius: 18px; padding: 56px;
  background-image: radial-gradient(600px 240px at 90% 0%, rgba(80, 209, 178, .22), transparent 70%);
}
.cta h2 { color: #fff; font-size: clamp(28px, 3.4vw, 40px); }
.cta p { margin-top: 12px; color: #a9b6be; font-size: 17px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 36px 0; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; font-size: 14px; }

/* Responsive */
@media (max-width: 960px) {
  .hero { padding: 56px 0 72px; }
  .hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .mock { transform: none; }
  .cards { grid-template-columns: 1fr; }
  .trace { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .cta { flex-direction: column; align-items: flex-start; padding: 40px 28px; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .nav__links a:not(.btn) { display: none; }
  .section { padding: 72px 0; }
  .mock__row { grid-template-columns: 1fr; }
  .trace { grid-template-columns: 1fr; }
  .trace li { padding-right: 0; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}