:root {
  --bg: #f1f5f9; --surface: #ffffff; --fg: #0f172a; --muted: #475569; --line: #d9e2ec;
  --link: #7c3aed; --accent: #8b5cf6;
  --f-display: 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  --f-body: 'Manrope', ui-sans-serif, system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f172a; --surface: #1e293b; --fg: #f1f5f9; --muted: #94a3b8; --line: #334155; --link: #a78bfa; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--f-body); font-size: 16px; line-height: 1.65; padding-inline: 20px; }
a { color: var(--link); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.wrap { max-width: 1120px; margin-inline: auto; }
.top { position: sticky; top: 0; z-index: 20; margin-inline: -20px; padding-inline: 20px; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-family: var(--f-display); font-weight: 600; font-size: 26px; letter-spacing: -0.02em; text-decoration: none; color: var(--fg); display: flex; align-items: center; gap: 10px; }
.mark { width: 36px; height: 36px; border-radius: 10px; }
.langs { display: flex; gap: 6px; }
.lang-link { font: 600 13px var(--f-body); letter-spacing: .08em; text-decoration: none; color: var(--muted); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line); }
.lang-link[aria-current="page"] { color: var(--fg); border-color: var(--accent); }
.doc { max-width: 760px; margin: 40px auto 64px; }
.doc h1 { font-family: var(--f-display); font-size: clamp(32px, 5vw, 48px); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 8px; }
.doc .updated { color: var(--muted); margin: 0 0 28px; }
.doc h2 { font-family: var(--f-display); font-size: 22px; margin: 32px 0 8px; }
.doc p, .doc li { color: var(--fg); }
.doc ul { padding-left: 1.2em; }
.doc li { margin: 6px 0; }
form.contact { display: grid; gap: 14px; margin-top: 8px; }
form.contact label { display: grid; gap: 6px; font-weight: 600; font-size: 14px; }
form.contact input, form.contact textarea {
  font: 16px/1.5 var(--f-body); color: var(--fg); background: var(--surface);
  border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; width: 100%;
}
form.contact textarea { min-height: 160px; resize: vertical; }
form.contact button {
  justify-self: start; background: #7c3aed; color: #fff; border: 1px solid #7c3aed;
  border-radius: 999px; padding: 12px 22px; font: 600 15px var(--f-body); cursor: pointer;
}
.hp { position: absolute; left: -10000px; height: 0; overflow: hidden; }
.status { margin: 0 0 18px; padding: 12px 14px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); }
.status[hidden] { display: none; }