:root {
  color-scheme: dark;
  --bg: #050505;
  --panel: #111111;
  --panel-soft: rgba(255, 255, 255, 0.045);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --fg: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.58);
  --faint: rgba(255, 255, 255, 0.34);
  --accent: #f5f5f5;
  --warning: #facc15;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 34%),
    radial-gradient(circle at 72% 16%, rgba(245, 245, 245, 0.08), transparent 30%),
    var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-shell {
  width: min(1180px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px 0 40px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0;
}

.brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.nav a,
.nav span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 6px;
}

.nav a {
  border-color: var(--line);
  color: var(--fg);
}

.nav span {
  color: var(--faint);
  cursor: not-allowed;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: 24px;
  align-items: end;
  min-height: 560px;
  padding: 72px 0 32px;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-size: clamp(56px, 9vw, 128px);
  font-weight: 650;
  line-height: 0.92;
  letter-spacing: 0;
}

.lead {
  max-width: 640px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.72;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 15px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
}

.button.primary {
  background: rgba(245, 245, 245, 0.12);
  border-color: rgba(245, 245, 245, 0.28);
  color: var(--accent);
}

.button.disabled {
  color: var(--faint);
  cursor: not-allowed;
}

.status-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), var(--panel));
  padding: 18px;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 32px;
  border-bottom: 1px solid var(--line);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent);
}

dl {
  display: grid;
  gap: 0;
  margin: 12px 0 0;
}

dl div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.045);
}

dl div:last-child {
  border-bottom: 0;
}

dt {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 11px;
}

dd {
  margin: 0;
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 12px;
}

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

.module-grid article {
  min-height: 160px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  padding: 18px;
}

.module-grid span {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 11px;
}

.module-grid h2 {
  margin: 28px 0 10px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0;
}

.module-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

@media (max-width: 820px) {
  .topbar,
  .hero {
    align-items: start;
  }

  .topbar {
    flex-direction: column;
    padding-bottom: 16px;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 56px;
  }

  .module-grid {
    grid-template-columns: 1fr;
  }
}