:root{--bg:#f7f7f9;--fg:#14141a;--mut:#62636e;--card:rgba(255,255,255,.8);--line:#e4e4ea;--chip:#efeff3;--acc:#e1306c;--glow:.35}
@media (prefers-color-scheme:dark){:root{--bg:#0b0b10;--fg:#f2f2f5;--mut:#9a9ba8;--card:rgba(21,21,29,.8);--line:#262632;--chip:#1d1d27;--acc:#ff4f8b;--glow:.55}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--fg);overflow-x:hidden;display:flex;flex-direction:column}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:var(--glow);background:
radial-gradient(520px 420px at 0% 0%,color-mix(in srgb,#f9a825 45%,transparent),transparent 70%),
radial-gradient(520px 460px at 100% 0%,color-mix(in srgb,#8b5cf6 55%,transparent),transparent 70%),
radial-gradient(700px 380px at 55% 105%,color-mix(in srgb,#e1306c 40%,transparent),transparent 70%)}
a{color:var(--acc)}
.wrap{width:100%;max-width:1040px;margin:0 auto;padding:0 16px}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.02em;text-decoration:none;color:var(--fg)}
.logo svg{width:32px;height:32px;flex:none}
.topr{display:flex;align-items:center;gap:14px}.back{color:var(--mut);text-decoration:none;font-size:14px}.back:hover{color:var(--fg)}
.lngsw{display:inline-flex;background:var(--chip);border:1px solid var(--line);border-radius:999px;padding:3px;font-size:13px}
.lngsw a{padding:5px 12px;border-radius:999px;color:var(--mut);text-decoration:none;font-weight:700}.lngsw a.on{background:var(--fg);color:var(--bg)}
.doc{max-width:760px;margin:12px auto 48px;background:var(--card);border:1px solid var(--line);border-radius:24px;padding:32px 36px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.doc h1{font-size:clamp(28px,4.5vw,40px);line-height:1.1;letter-spacing:-.03em;margin:0 0 18px}.doc h2{font-size:21px;letter-spacing:-.015em;margin:30px 0 10px}
.doc hr{border:0;border-top:1px solid var(--line);margin:32px 0}
footer.site{margin-top:auto;border-top:1px solid var(--line);font-size:13px;color:var(--mut)}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;padding-top:22px;padding-bottom:28px}
footer.site a{color:var(--mut);text-decoration:none}footer.site a:hover{color:var(--fg);text-decoration:underline}
footer.site .cols{display:flex;flex-wrap:wrap;gap:8px 20px}
@media(max-width:640px){.doc{padding:22px 18px;border-radius:20px;margin-top:4px}}