:root{font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;color:#20332e;background:#f4f7f5;line-height:1.8;color-scheme:light}
*{box-sizing:border-box}body{margin:0}header,main,footer{width:min(840px,calc(100% - 40px));margin:auto}header{padding:38px 0 22px}nav{display:flex;gap:22px;flex-wrap:wrap}a{color:#176247;text-underline-offset:4px}nav a{text-decoration:none;font-size:15px}nav a[aria-current="page"]{font-weight:700;text-decoration:underline}main{background:#fff;padding:38px 44px;border:1px solid #dce6df;border-radius:18px}h1{font-size:clamp(26px,5vw,38px);line-height:1.3;margin:12px 0 20px;letter-spacing:-.03em}h2{font-size:20px;line-height:1.5;margin:30px 0 10px}p{margin:12px 0}ul,ol{padding-left:24px}.eyebrow{color:#176247;font-size:13px;font-weight:700;letter-spacing:.08em}.lead{font-size:18px;color:#425b50}.note{background:#f1f7f3;border-left:3px solid #318561;padding:14px 18px;margin:24px 0}.meta,footer{font-size:13px;color:#63776d}footer{padding:22px 0 34px}code{overflow-wrap:anywhere;font-size:.9em;background:#f2f5f3;padding:2px 5px;border-radius:4px}@media(max-width:560px){header,main,footer{width:calc(100% - 28px)}header{padding-top:24px}main{padding:25px 23px;border-radius:13px}.lead{font-size:16px}nav{gap:18px}}