:root{--bg:#f6f6f2;--card:#fff;--text:#20242b;--muted:#6e747d;--line:#e5e7eb;--accent:#2e6ea8;--soft:#edf4fa;--max:900px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.65}a{color:var(--accent);text-underline-offset:2px}.site-header{position:sticky;top:0;z-index:10;background:rgba(246,246,242,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{max-width:var(--max);margin:0 auto;padding:14px 20px;display:flex;justify-content:space-between;gap:18px;align-items:center}.brand{font-weight:800;font-size:20px}.nav{display:flex;gap:14px;flex-wrap:wrap;font-size:14px}.nav a{text-decoration:none;color:var(--muted)}.nav a.active,.nav a:hover{color:var(--text)}.langs{display:inline-flex;background:var(--soft);padding:3px;border-radius:999px}.langs button{border:0;background:transparent;padding:7px 10px;border-radius:999px;font-weight:700;color:var(--accent);cursor:pointer}.langs button.active{background:#fff;color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.08)}main{max-width:var(--max);margin:38px auto 70px;padding:0 20px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--accent);font-size:12px;font-weight:800}h1{font-size:clamp(36px,6vw,56px);line-height:1.05;margin:8px 0 10px}h2{font-size:24px;margin:0 0 12px}.subtitle,.meta{color:var(--muted)}.meta{font-size:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:clamp(22px,4vw,40px);box-shadow:0 10px 30px rgba(17,24,39,.04);margin-top:24px}section+section{border-top:1px solid var(--line);margin-top:28px;padding-top:28px}ul{padding-left:22px}.note{background:var(--soft);border-left:3px solid var(--accent);border-radius:12px;padding:14px 16px;margin:16px 0}.doc[hidden]{display:none!important}footer{max-width:var(--max);margin:0 auto;padding:0 20px 40px;color:var(--muted);font-size:13px}.footer-links{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:8px}@media(max-width:720px){.header-inner{align-items:flex-start;flex-direction:column}.card{border-radius:18px}main{margin-top:24px}}