:root{font-family:system-ui,sans-serif;color:#132d4e;background:#f4f6fa;line-height:1.65}body{margin:0;padding:24px}main{max-width:780px;margin:24px auto;padding:clamp(22px,5vw,56px);background:white;border:1px solid #d8e0ea;border-radius:18px}h1{font-size:clamp(2rem,6vw,3rem);line-height:1.15}h2{font-size:1.3rem;margin-top:2rem}a{color:#064e9d;text-underline-offset:3px}a:focus-visible{outline:3px solid #b44e18;outline-offset:4px}.tag{font-size:.8rem;font-weight:700;letter-spacing:.08em;color:#596b7e}