:root {
  --bg: #f6f7f9; --text: #121418; --muted: #5d6470; --card: #ffffff; --line: #e3e6eb; --accent: #2a7fd6;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000; --text: #f3f5f8; --muted: #9aa3ae; --card: rgba(42, 44, 48, .74); --line: rgba(255, 255, 255, .11); --accent: #8fd0ff; }
  body { background: radial-gradient(120% 60% at 50% 0, #2b3542 0, #0a0b0e 55%, #000 100%) fixed; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 22px; padding-bottom: 22px; flex-wrap: wrap; }
.brand { color: var(--text); font-weight: 700; font-size: 20px; }
.mark { color: var(--accent); }
nav { display: flex; gap: 18px; font-size: 15px; }
nav a { color: var(--muted); }
.hero { padding: 48px 0 28px; }
.hero h1 { font-size: clamp(32px, 8vw, 52px); line-height: 1.08; letter-spacing: -.02em; margin: 0 0 16px; }
.hero p { color: var(--muted); font-size: 18px; margin: 0 0 10px; max-width: 560px; }
.hero .soon { color: var(--text); font-weight: 600; margin-top: 22px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; padding-bottom: 40px; }
.card { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 18px 20px; color: var(--text); }
.card:hover { text-decoration: none; border-color: var(--accent); }
.card h2 { font-size: 18px; margin: 0 0 4px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.doc { padding-bottom: 40px; }
.doc h1 { font-size: clamp(26px, 6vw, 34px); line-height: 1.15; margin: 8px 0 6px; }
.doc h2 { font-size: 19px; margin-top: 32px; }
.doc em { color: var(--muted); }
.doc table { border-collapse: collapse; width: 100%; font-size: 14px; display: block; overflow-x: auto; }
.doc td, .doc th { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; min-width: 120px; }
.doc th { background: var(--card); }
footer { color: var(--muted); font-size: 14px; padding-top: 18px; padding-bottom: 36px; border-top: 1px solid var(--line); }