:root {
  --bg: #060708;
  --bg-soft: #0d1117;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.10);
  --text: #f4f7fb;
  --muted: rgba(244, 247, 251, 0.68);
  --faint: rgba(244, 247, 251, 0.48);
  --accent: #f1f3f5;
  --accent-soft: rgba(241, 243, 245, 0.12);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --radius: 24px;
  --radius-sm: 16px;
  --container: 1120px;
  --mono: "SFMono-Regular", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.08), transparent 34%),
    radial-gradient(circle at top right, rgba(255,255,255,0.06), transparent 28%),
    linear-gradient(180deg, #0b0f16 0%, #060708 34%, #050607 100%);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
a:hover { opacity: 0.88; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  padding: 10px 14px;
  background: #fff;
  color: #111;
  border-radius: 999px;
  z-index: 9999;
}
.skip-link:focus { left: 16px; }

.page {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
  padding: 22px 0 64px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 8px 0 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, rgba(255,255,255,0.16), rgba(255,255,255,0.05));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  font-family: var(--mono);
  font-size: 14px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: flex-end;
  color: var(--muted);
  font-size: 14px;
}

.nav a { padding: 8px 0; }
.nav .primary {
  padding: 11px 15px;
  border-radius: 999px;
  background: var(--accent);
  color: #0b0d10;
  font-weight: 700;
}

.hero {
  padding: 42px 0 16px;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 28px;
  align-items: start;
}

.kicker {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 16px;
}

.kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: rgba(255,255,255,0.22);
}

h1 {
  margin: 0;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 0.95;
  letter-spacing: -0.08em;
  max-width: 10ch;
}

.lead {
  margin: 22px 0 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.button.primary {
  background: var(--accent);
  color: #0b0d10;
}

.button.secondary {
  border-color: var(--border);
  background: transparent;
  color: var(--text);
}

.mini-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 13px;
}

.hero-card {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 22px;
}

.clock-mock {
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.12);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02)),
    linear-gradient(180deg, #12151b, #08090b);
  padding: 22px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.clock-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.flip-card {
  flex: 1 1 0;
  min-width: 0;
  height: 128px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #d9dde3 100%);
  color: #090b0d;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(52px, 8vw, 92px);
  font-weight: 800;
  letter-spacing: -0.08em;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.8),
    0 18px 40px rgba(0,0,0,0.26);
}

.flip-divider {
  width: 20px;
  height: 10px;
  display: grid;
  gap: 10px;
}

.flip-divider span {
  display: block;
  width: 10px;
  height: 10px;
  margin: 0 auto;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
}

.clock-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 18px;
}

.section {
  margin-top: 24px;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.section h2 {
  margin: 0 0 14px;
  font-size: 28px;
  letter-spacing: -0.05em;
}

.section p.lead-small {
  margin: 0 0 24px;
  max-width: 72ch;
  color: var(--muted);
  line-height: 1.7;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(255,255,255,0.03);
  padding: 18px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  letter-spacing: -0.03em;
}

.card p, .card li, .section li {
  color: var(--muted);
  line-height: 1.7;
  font-size: 15px;
}

.card ul, .section ul, .section ol {
  margin: 0;
  padding-left: 18px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 14px;
  background: rgba(255,255,255,0.03);
}

.timeline {
  display: grid;
  gap: 14px;
}

.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: start;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
}

.step .index {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,0.08);
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.step h3 { margin: 0 0 6px; font-size: 18px; }
.step p { margin: 0; color: var(--muted); line-height: 1.65; }

.footer {
  padding: 28px 0 10px;
  color: var(--faint);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

hr.sep {
  border: 0;
  height: 1px;
  background: rgba(255,255,255,0.10);
  margin: 22px 0;
}

.page-title {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.page-title h1 {
  font-size: clamp(36px, 4.5vw, 58px);
  max-width: none;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 13px;
  color: var(--faint);
  line-height: 1.7;
}

.code {
  font-family: var(--mono);
  font-size: 13px;
  color: #fff;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 8px;
}

@media (max-width: 940px) {
  .hero, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; }
  .section { padding: 22px; }
}

@media (max-width: 640px) {
  .page { width: min(calc(100% - 24px), var(--container)); padding-top: 14px; }
  h1 { max-width: 11ch; }
  .lead { font-size: 17px; }
  .hero-card { padding: 16px; }
  .flip-card { height: 106px; border-radius: 18px; }
  .clock-mock { min-height: 220px; padding: 16px; }
  .step { grid-template-columns: 1fr; }
  .step .index { width: 48px; height: 48px; }
}