:root{--bg:#f2f8fc;--surface:#fff;--surface-2:#f4f9fc;--text:#132131;--muted:#647789;--line:#dceaf1;--accent:#178fdf;--accent-2:#20cdda;color-scheme:light}[data-theme="dark"]{--bg:#111722;--surface:#171e2a;--surface-2:#1c2634;--text:#f3fbff;--muted:#91a8ba;--line:#293746;--accent:#249ee9;--accent-2:#57e3e8;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 15% 0,rgba(23,143,223,.13),transparent 34rem),var(--bg);color:var(--text);font-family:"DM Sans",system-ui,sans-serif;line-height:1.65}a{color:var(--accent);font-weight:700;text-decoration:none}a:hover{text-decoration:underline}.bar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px max(18px,calc((100vw - 980px)/2));border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-size:19px}.brand img{width:40px;height:40px;border-radius:12px}.controls{display:flex;gap:8px}.controls button,.controls select{min-height:42px;border:1px solid var(--line);border-radius:11px;background:var(--surface);color:var(--text);padding:8px 12px;font:inherit;cursor:pointer}.wrap{width:min(920px,calc(100% - 28px));margin:36px auto 64px}.hero,.section,.notice{border:1px solid var(--line);background:var(--surface);border-radius:22px}.hero{padding:clamp(24px,5vw,52px);background:radial-gradient(circle at 90% 10%,rgba(87,227,232,.2),transparent 19rem),var(--surface)}.badge{display:inline-flex;padding:5px 10px;border-radius:999px;background:rgba(32,205,218,.13);color:var(--accent-2);font-size:11px;font-weight:800;letter-spacing:.1em}.hero h1{font-size:clamp(34px,7vw,62px);line-height:1.02;margin:18px 0}.hero p{max-width:720px;color:var(--muted);font-size:1.05rem}.notice{margin:18px 0;padding:18px 20px;border-color:color-mix(in srgb,var(--accent) 40%,var(--line));background:color-mix(in srgb,var(--accent) 7%,var(--surface))}.content{display:grid;gap:14px}.section{padding:22px 24px}.section h2{margin:0 0 9px;font-size:1.25rem}.section p,.section li{color:var(--muted)}.section ul{padding-left:20px}.footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:24px;padding:18px;color:var(--muted);font-size:.85rem}@media(max-width:600px){.bar{padding:11px 14px}.brand span{display:none}.controls button{padding-inline:10px}.wrap{margin-top:20px}.section{padding:19px}.hero h1{font-size:38px}}