:root{color-scheme:light;--ink:#172b49;--muted:#5d6c81;--accent:#24558e;--paper:#e3e7ed;--card:#fff;--line:#cfd7e2;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(145deg,#dce3ea,#eef1f4);color:var(--ink)}main{width:min(820px,calc(100% - 32px));margin:40px auto;padding:clamp(28px,6vw,64px);background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:0 24px 70px #172b4914}a{color:var(--accent);font-weight:700}nav{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:44px}.brand{text-decoration:none;font-size:20px;color:var(--ink)}h1{font-size:clamp(34px,7vw,54px);letter-spacing:-.045em;line-height:1;margin:0 0 12px}h2{font-size:21px;margin:36px 0 10px}p,li{color:var(--muted);font-size:16px;line-height:1.7}ul{padding-left:22px}.updated{font-size:14px;margin-bottom:38px}.notice{padding:18px;border-radius:14px;background:#edf3f8;border:1px solid #d1deeb;color:var(--ink)}footer{border-top:1px solid var(--line);margin-top:42px;padding-top:24px;font-size:14px;color:var(--muted)}@media(max-width:520px){main{margin:0;width:100%;min-height:100vh;border:0;border-radius:0;padding:28px 20px}nav{margin-bottom:32px}}