:root {
  color-scheme: light dark;
  --bg: #f5f6fa;
  --surface: #ffffff;
  --text: #171922;
  --muted: #626776;
  --line: #dde0e8;
  --accent: #5d66d7;
  --accent-soft: #eceeff;
  --gold: #b17b20;
}

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  margin: 0;
}

main {
  margin: 0 auto;
  max-width: 820px;
  padding: 48px 20px 72px;
}

.hero, article, .link-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
}

.hero, article { padding: clamp(24px, 5vw, 48px); }
article { margin-top: 20px; }

.eyebrow {
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 { font-size: clamp(2rem, 7vw, 3.5rem); line-height: 1.1; margin: 14px 0; }
h2 { font-size: 1.35rem; line-height: 1.35; margin: 2rem 0 0.6rem; }
h3 { font-size: 1rem; margin: 1.5rem 0 0.35rem; }
p, li { color: var(--muted); }
a { color: var(--accent); }

.summary { font-size: 1.08rem; max-width: 650px; }
.meta { color: var(--muted); font-size: 0.9rem; }
.language-block + .language-block { border-top: 1px solid var(--line); margin-top: 36px; padding-top: 28px; }
.cards { display: grid; gap: 14px; margin-top: 24px; }
.link-card { display: block; padding: 22px; text-decoration: none; }
.link-card strong { color: var(--text); display: block; font-size: 1.05rem; }
.link-card span { color: var(--muted); }
.nav { display: flex; flex-wrap: wrap; gap: 14px; margin: 0 0 20px; }
.nav a { color: var(--muted); font-size: 0.92rem; }
.notice { background: var(--accent-soft); border-radius: 16px; color: var(--text); padding: 16px 18px; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0f16;
    --surface: #171a23;
    --text: #f4f5fa;
    --muted: #adb1bf;
    --line: #303440;
    --accent: #8d94ff;
    --accent-soft: #242846;
    --gold: #dab15f;
  }
}