:root{--bg: #fbfbfd;--surface: #ffffff;--text: #14161a;--muted: #5b6470;--line: #e7e9ee;--brand: #3a5bd9;--brand-700: #2c46ad;--ok: #128a5a;--shadow: 0 1px 2px rgba(20, 22, 26, .04), 0 8px 24px rgba(20, 22, 26, .06);--radius: 14px;--maxw: 980px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.55;font-size:17px}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--line);background:#fbfbfdd9;backdrop-filter:saturate(180%) blur(8px);position:sticky;top:0;z-index:10}.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}.brand{font-weight:700;font-size:19px;letter-spacing:-.02em;color:var(--text);display:flex;align-items:center;gap:8px}.brand 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