:root {
  --bg: #F7F8FC; --card: #FFFFFF; --ink: #0B1220; --ink-2: #4A5465; --line: #E3E8F0;
  --accent: #2F6BFF; --accent-soft: #E9EFFF;
  --glow: linear-gradient(135deg, #8B5CF6 0%, #4F6BFF 55%, #06B6D4 100%);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0A0C10; --card: #141820; --ink: #F3F5F9; --ink-2: #A6AFBE; --line: #262C37; --accent: #7EA2FF; --accent-soft: #1B2640; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif; -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }
header.top { border-bottom: 1px solid var(--line); background: var(--card); }
header.top .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.word { font-weight: 800; font-size: 24px; letter-spacing: -.035em; }
.word span { color: var(--accent); }
nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; font-size: 15px; }
nav a { color: var(--ink-2); text-decoration: none; padding: 6px 0; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }
nav .lang { padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; }
main { padding: 40px 0 64px; }
.hero { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; padding: 40px 32px; border-radius: 28px; background: var(--glow); color: #FFFFFF; }
.hero img { width: 88px; height: 88px; border-radius: 20px; box-shadow: 0 0 0 3px rgba(255,255,255,.35), 0 10px 24px rgba(20,20,60,.25); }
.hero h1 { margin: 0; font-size: clamp(32px, 6vw, 52px); line-height: 1.05; letter-spacing: -.03em; }
.hero p { margin: 0; max-width: 620px; font-size: 19px; }
.pill { display: inline-block; padding: 10px 18px; border-radius: 999px; background: #FFFFFF; color: #0B1220; font-weight: 700; font-size: 15px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 28px; }
.card { padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); }
.card h2, .card h3 { margin: 0 0 6px; font-size: 18px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--ink-2); font-size: 16px; }
.doc { max-width: 760px; }
.doc h1 { font-size: clamp(30px, 5vw, 40px); line-height: 1.15; letter-spacing: -.025em; margin: 0 0 6px; }
.doc .updated { color: var(--ink-2); margin: 0 0 28px; font-size: 15px; }
.doc h2 { font-size: 22px; letter-spacing: -.015em; margin: 36px 0 8px; }
.doc h3 { font-size: 18px; margin: 22px 0 6px; }
.doc li { margin: 4px 0; }
.doc table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.doc th { color: var(--ink-2); font-weight: 600; }
.table { overflow-x: auto; }
.note { padding: 16px 18px; border-radius: 16px; background: var(--accent-soft); }
details { border-bottom: 1px solid var(--line); padding: 14px 0; }
summary { cursor: pointer; font-weight: 650; }
details p, details ol, details ul { color: var(--ink-2); }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--ink-2); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; }
footer a { color: var(--ink-2); }