:root {
  color-scheme: light dark;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --ink: #172033;
  --muted: #5c667a;
  --line: #dbe0e8;
  --accent: #3457d5;
  --accent-soft: #e9edff;
  --danger: #b42318;
  --warning: #b54708;
  --success: #067647;
  --radius: 16px;
  --shadow: 0 16px 45px rgba(24, 33, 52, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1320;
    --surface: #171e2d;
    --ink: #eef1f7;
    --muted: #aab2c2;
    --line: #2b3547;
    --accent: #93a8ff;
    --accent-soft: #202b51;
    --shadow: 0 18px 55px rgba(0, 0, 0, 0.28);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.65; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
img { max-width: 100%; }
code { font-family: "SFMono-Regular", Consolas, monospace; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(14px);
}
.nav {
  width: min(1120px, calc(100% - 32px));
  min-height: 66px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand { color: var(--ink); font-weight: 800; text-decoration: none; letter-spacing: -0.02em; }
.nav-links { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--ink); font-weight: 700; }

main { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.hero { padding: clamp(72px, 10vw, 132px) 0 72px; }
.eyebrow { margin: 0 0 14px; color: var(--accent); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.12em; }
h1 { max-width: 900px; margin: 0 0 24px; font-size: clamp(42px, 7vw, 78px); line-height: 0.98; letter-spacing: -0.055em; }
h2 { margin: 0 0 18px; font-size: clamp(28px, 4vw, 46px); line-height: 1.1; letter-spacing: -0.035em; }
h3 { margin: 0 0 8px; font-size: 19px; line-height: 1.3; }
.lede { max-width: 850px; color: var(--muted); font-size: clamp(18px, 2.2vw, 24px); }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 16px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: var(--surface); text-decoration: none; font-weight: 700; }
.button.primary { border-color: var(--ink); background: var(--ink); color: var(--bg); }

section { padding: 68px 0; border-top: 1px solid var(--line); }
.section-intro { max-width: 800px; color: var(--muted); font-size: 17px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; }
.card { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.card p { margin-bottom: 0; color: var(--muted); }
.status { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px; padding: 5px 9px; border-radius: 999px; font-size: 12px; font-weight: 800; }
.status.released { color: var(--success); background: color-mix(in srgb, var(--success) 12%, transparent); }
.status.preview { color: var(--warning); background: color-mix(in srgb, var(--warning) 12%, transparent); }
.status.roadmap { color: var(--accent); background: var(--accent-soft); }

.signal-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 30px; }
.signal { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: start; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.signal-icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; color: white; font-weight: 900; font-size: 20px; }
.red { background: #b42318; }
.orange { background: #d97706; }
.blue { background: #2563eb; }
.green { background: #078451; }
.purple { background: #7c3aed; }
.gray { background: #667085; }
.signal p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

.notice { margin-top: 28px; padding: 18px 20px; border-left: 4px solid var(--accent); background: var(--surface); }
.prose { max-width: 850px; padding: 72px 0; }
.prose h1 { font-size: clamp(38px, 6vw, 66px); }
.prose h2 { margin-top: 52px; font-size: 30px; }
.prose h3 { margin-top: 32px; }
.prose p, .prose li { color: var(--muted); }
.prose strong { color: var(--ink); }
.prose table { width: 100%; border-collapse: collapse; margin: 26px 0; }
.prose th, .prose td { padding: 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { background: var(--surface); }

.site-footer { margin-top: 50px; padding: 34px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer-inner { width: min(1120px, calc(100% - 32px)); margin: 0 auto; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }

@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
  .signal-list { grid-template-columns: 1fr; }
  .nav { align-items: flex-start; padding: 16px 0; }
  .nav-links { justify-content: flex-end; }
}

@media (max-width: 560px) {
  .nav { flex-direction: column; }
  .nav-links { justify-content: flex-start; }
  .hero { padding-top: 56px; }
  .button { width: 100%; }
}