:root {
  color-scheme: dark;
  --bg: #071014;
  --bg-soft: #0d1b23;
  --card: rgba(255,255,255,.08);
  --card-strong: rgba(255,255,255,.13);
  --text: #eef7f4;
  --muted: #a8bbb6;
  --accent: #60f0ba;
  --accent-2: #75a7ff;
  --danger: #ff6b7a;
  --line: rgba(255,255,255,.15);
  --shadow: 0 24px 90px rgba(0,0,0,.35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 10%, rgba(96,240,186,.22), transparent 30rem),
    radial-gradient(circle at 90% 8%, rgba(117,167,255,.2), transparent 28rem),
    linear-gradient(180deg, #071014 0%, #0a1217 44%, #edf3ee 44%, #edf3ee 100%);
  color: var(--text);
}

a { color: inherit; }

.hero {
  min-height: 780px;
  padding: 28px clamp(20px, 5vw, 72px) 84px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 11% -12% auto auto;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(96,240,186,.18), rgba(117,167,255,.08));
  filter: blur(10px);
  pointer-events: none;
}

.nav, .hero-grid, .section, footer { max-width: 1180px; margin-inline: auto; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; position: relative; z-index: 1; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: -.02em; }
.brand-mark {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #071014; font-size: 26px;
  box-shadow: 0 10px 40px rgba(96,240,186,.22);
}
.nav-links { display: flex; gap: 18px; color: var(--muted); font-size: 14px; }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--text); }

.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) 430px; gap: 56px; align-items: center; padding-top: 110px; position: relative; z-index: 1; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: .14em; font-size: 12px; font-weight: 800; margin: 0 0 14px; }
h1, h2 { letter-spacing: -.055em; line-height: .95; margin: 0; }
h1 { font-size: clamp(50px, 7vw, 92px); max-width: 820px; }
h2 { font-size: clamp(34px, 4vw, 56px); color: #10212a; }
.lead { font-size: clamp(18px, 2.2vw, 22px); line-height: 1.6; color: var(--muted); max-width: 760px; margin: 28px 0 0; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.button, button {
  border: 0; border-radius: 999px; padding: 13px 20px; font-weight: 800; cursor: pointer;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.button { display: inline-flex; text-decoration: none; }
.button:hover, button:hover { transform: translateY(-1px); }
.primary { background: linear-gradient(135deg, var(--accent), #9df7db); color: #062119; box-shadow: 0 14px 40px rgba(96,240,186,.24); }
.ghost { border: 1px solid var(--line); color: var(--text); background: rgba(255,255,255,.05); }

.status-card {
  padding: 28px; border: 1px solid var(--line); border-radius: 34px;
  background: linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.06));
  box-shadow: var(--shadow); backdrop-filter: blur(22px);
}
.status-topline { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.pulse { width: 11px; height: 11px; border-radius: 50%; background: #ffd166; box-shadow: 0 0 0 8px rgba(255,209,102,.12); }
.pulse.ok { background: var(--accent); box-shadow: 0 0 0 8px rgba(96,240,186,.12); }
.pulse.bad { background: var(--danger); box-shadow: 0 0 0 8px rgba(255,107,122,.12); }
.score-ring {
  --score: 0;
  width: 250px; height: 250px; border-radius: 50%; margin: 32px auto;
  background: conic-gradient(var(--accent) calc(var(--score) * 1%), rgba(255,255,255,.1) 0);
  display: grid; place-items: center; position: relative;
}
.score-ring::before { content: ""; position: absolute; inset: 16px; border-radius: 50%; background: #0a171d; }
.score-ring span, .score-ring small { position: relative; z-index: 1; display: block; text-align: center; }
.score-ring span { font-size: 46px; font-weight: 900; letter-spacing: -.05em; }
.score-ring small { color: var(--muted); margin-top: 58px; position: absolute; }
.mini-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 0; }
.mini-metrics div { border: 1px solid var(--line); border-radius: 18px; padding: 14px; background: rgba(255,255,255,.05); }
dt { color: var(--muted); font-size: 12px; }
dd { margin: 5px 0 0; font-weight: 900; }

main { color: #10212a; padding: 0 clamp(20px, 5vw, 72px) 70px; }
.section { margin-top: 34px; }
.metric-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; transform: translateY(-58px);
}
.metric-strip article { padding: 24px; border-radius: 26px; background: #ffffff; box-shadow: 0 20px 60px rgba(7,16,20,.12); border: 1px solid rgba(16,33,42,.08); }
.metric-strip strong { display: block; font-size: 38px; letter-spacing: -.05em; }
.metric-strip span { color: #516269; font-weight: 700; }
.split, .demo, .api-contract {
  display: grid; grid-template-columns: .85fr 1.15fr; gap: 34px; align-items: start;
  padding: 36px; border-radius: 34px; background: #fff; box-shadow: 0 20px 70px rgba(7,16,20,.1);
}
.split p, .demo-copy p, .api-contract p { color: #516269; line-height: 1.7; font-size: 17px; }
.timeline { display: grid; gap: 12px; }
.timeline div { display: grid; grid-template-columns: 54px 120px 1fr; gap: 16px; align-items: center; padding: 18px; border-radius: 22px; background: #f4f8f6; border: 1px solid rgba(16,33,42,.08); }
.timeline span { color: #0b8f68; font-weight: 900; }
.timeline p { margin: 0; color: #516269; }

.demo { align-items: stretch; }
.example-buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.example-buttons button { background: #e9f5ef; color: #0b6048; }
.predictor { display: grid; gap: 12px; }
.predictor label { font-weight: 900; }
textarea, pre {
  width: 100%; border: 1px solid rgba(16,33,42,.12); border-radius: 22px; padding: 16px;
  font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
textarea { resize: vertical; min-height: 190px; background: #071014; color: #e8fff7; outline: none; }
.form-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
#formStatus { color: #516269; font-weight: 700; }
.result { min-height: 155px; margin: 0; background: #f7faf8; color: #10212a; white-space: pre-wrap; }
.api-contract pre { margin: 0; background: #071014; color: #dffcef; overflow: auto; }
footer { color: #607078; display: flex; justify-content: space-between; gap: 20px; padding: 40px 0; }

@media (max-width: 900px) {
  .hero-grid, .split, .demo, .api-contract { grid-template-columns: 1fr; }
  .hero-grid { padding-top: 72px; }
  .status-card { max-width: 460px; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); transform: none; }
  .timeline div { grid-template-columns: 44px 1fr; }
  .timeline p { grid-column: 2; }
  footer { flex-direction: column; }
}

@media (max-width: 560px) {
  .nav { align-items: flex-start; }
  .nav-links { display: none; }
  .hero { min-height: auto; padding-bottom: 48px; }
  .metric-strip { grid-template-columns: 1fr; }
  .split, .demo, .api-contract { padding: 24px; }
  .mini-metrics { grid-template-columns: 1fr; }
}