:root{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#213047;background:#f3f6fa;line-height:1.7}*{box-sizing:border-box}body{margin:0;padding:32px 16px}main{max-width:860px;margin:auto;background:white;padding:clamp(24px,5vw,58px);border-radius:18px;box-shadow:0 8px 35px #152d4810}aside,.notice{background:#fff5d7;border-left:4px solid #d19924;padding:12px 16px;font-size:.93rem}.brand{letter-spacing:.16em;font-weight:750;color:#225d70;margin-top:32px}h1{font-size:clamp(1.8rem,5vw,2.7rem);line-height:1.15;margin:16px 0}h2{font-size:1.2rem;margin-top:30px}.lead{font-size:1.15rem;color:#506078}a{color:#155d83}footer{border-top:1px solid #dde5ee;margin-top:35px;padding-top:22px}code{background:#edf3f7;padding:2px 5px;border-radius:4px}