:root {
  color-scheme: light;
  --bg: #f8fafc;
  --bg-accent: #eff6ff;
  --card: #ffffff;
  --text: #0b1220;
  --muted: #334155;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --line: #d6e0ef;
  --chip: #f1f5ff;
  --chip-line: #dbe7ff;
  --timeline-line: #cfe0ff;
  --button-bg: #ffffff;
  --button-hover-border: #a8bce7;
  --shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: radial-gradient(circle at top right, var(--bg-accent), var(--bg) 35%);
  color: var(--text);
  line-height: 1.6;
}

.page {
  width: min(980px, calc(100% - 2rem));
  margin: 2rem auto;
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero {
  padding: 2rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.02em;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.1;
}

h2 {
  margin: 0 0 0.8rem;
  font-size: 1.25rem;
}

h3 {
  margin: 0;
  font-size: 1rem;
}

.ai-marker {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.05rem 0.45rem;
  border-radius: 0.45rem;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  vertical-align: middle;
}

.subtitle {
  margin: 0.5rem 0 0;
  font-size: 1.1rem;
  color: var(--muted);
}

.lead {
  margin-top: 1rem;
  max-width: 72ch;
}

.meta {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1rem;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.button {
  display: inline-block;
  text-decoration: none;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--button-bg);
  padding: 0.5rem 0.9rem;
  border-radius: 10px;
  font-weight: 600;
  transition: 0.2s ease;
}

.button:hover {
  border-color: var(--button-hover-border);
  transform: translateY(-1px);
}

.button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.button.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

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

.chips {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chips li {
  background: var(--chip);
  border: 1px solid var(--chip-line);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.92rem;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline article {
  border-left: 3px solid var(--timeline-line);
  padding-left: 0.9rem;
}

.time {
  margin: 0.25rem 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.footer-card p {
  margin: 0.3rem 0 0;
}

a {
  color: var(--accent);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8fafc;
    --bg-accent: #eff6ff;
    --card: #ffffff;
    --text: #0b1220;
    --muted: #334155;
    --line: #d6e0ef;
    --chip: #f1f5ff;
    --chip-line: #dbe7ff;
    --timeline-line: #cfe0ff;
    --button-bg: #ffffff;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0b1220;
    --bg-accent: #1e293b;
    --card: #111827;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --accent: #60a5fa;
    --accent-hover: #3b82f6;
    --line: #243244;
    --chip: #1b2637;
    --chip-line: #2b3b52;
    --timeline-line: #334155;
    --button-bg: #182233;
    --button-hover-border: #3b4f6b;
    --shadow: 0 12px 30px rgba(2, 6, 23, 0.45);
  }
}

@media (max-width: 760px) {
  .page {
    width: calc(100% - 1rem);
    margin: 1rem auto;
  }

  .hero {
    padding: 1.4rem;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }
}