:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --panel: rgba(15, 23, 42, 0.82);
  --panel-subtle: rgba(30, 41, 59, 0.72);
  --text: #e5eefb;
  --muted: #a8b3c7;
  --accent: #67e8f9;
  --accent-strong: #22d3ee;
  --border: rgba(148, 163, 184, 0.28);
  --success: #86efac;
  --warning: #fca5a5;
  --shadow: 0 20px 60px rgba(2, 6, 23, 0.35);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(34, 211, 238, 0.24), transparent 34rem),
    linear-gradient(135deg, #020617 0%, var(--bg) 52%, #111827 100%);
  color: var(--text);
}

a { color: inherit; }

.hero {
  padding: 1.25rem clamp(1rem, 4vw, 4rem) 3rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 72rem;
  margin: 0 auto 4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-decoration: none;
  font-size: 1.3rem;
}

.brand img {
  border-radius: 0.8rem;
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.35);
}

.topbar__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 0.9rem;
}

.topbar a:not(.brand),
.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.topbar a:not(.brand):hover,
.site-footer a:hover { color: var(--text); }

.hero__content,
main,
footer {
  width: min(72rem, calc(100% - 2rem));
  margin-inline: auto;
}

.hero__content h1 {
  max-width: 56rem;
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.08em;
}

.hero__content p:last-child {
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.7;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1rem;
  border: 1px solid rgba(103, 232, 249, 0.5);
  border-radius: 999px;
  padding: 0.75rem 1rem;
  background: rgba(34, 211, 238, 0.12);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.button:hover { background: rgba(34, 211, 238, 0.2); }

.eyebrow {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

main {
  display: grid;
  gap: 1rem;
  padding-bottom: 3rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: clamp(1rem, 3vw, 2rem);
  backdrop-filter: blur(16px);
}

.card--subtle { background: var(--panel-subtle); }

.card h2 {
  margin: 0.2rem 0 1rem;
  font-size: clamp(1.6rem, 4vw, 3rem);
  letter-spacing: -0.05em;
}

.meta,
.source-meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.provider-note {
  color: var(--muted);
  font-size: 0.85rem;
}

.section {
  margin-top: 1.5rem;
}

.bullet-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  list-style: none;
}

.bullet {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.5);
}

.citations {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.citation,
.status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.6rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
}

.status { color: var(--success); }
.status--bad { color: var(--warning); }

.source-list,
.archive-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  list-style: none;
}

.archive-link {
  display: block;
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 0.9rem;
  background: rgba(15, 23, 42, 0.42);
  text-decoration: none;
}

.archive-link strong { display: block; }

.site-footer {
  color: var(--muted);
  display: grid;
  justify-items: center;
  gap: 0.65rem;
  padding: 0 0 2rem;
  text-align: center;
}

.site-footer p { margin: 0; }

.github-star {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.65rem;
}

.github-star-button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.7rem;
  background: rgba(15, 23, 42, 0.5);
}

@media (width >= 900px) {
  main { grid-template-columns: minmax(0, 2fr) minmax(18rem, 1fr); }
  #briefing { grid-row: span 3; }
}

@media (width < 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 2.5rem;
  }

  .topbar__links { justify-content: flex-start; }
}