:root{color-scheme:dark;--bg:#0e1116;--panel:#171d24;--line:#2b3540;--text:#f5f7fa;--muted:#9eabb8;--accent:#43a9ee;--green:#51c883}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.65 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;letter-spacing:0}a{color:var(--accent);text-decoration:none}header{position:sticky;top:0;z-index:2;display:flex;justify-content:space-between;align-items:center;padding:14px max(20px,env(safe-area-inset-left));background:#0e1116f2;border-bottom:1px solid var(--line)}nav{display:flex;gap:18px}.brand{font-size:18px;font-weight:700;color:var(--text)}main{width:min(760px,calc(100% - 32px));margin:auto;padding:34px 0 60px}.intro{padding:10px 0 24px}.intro h1,.legal h1{margin:0;font-size:38px}.intro p{max-width:620px;color:var(--muted)}.eyebrow{margin:0!important;color:var(--accent)!important;font-size:12px;font-weight:700}.binding{display:grid;gap:4px;padding:18px 20px;background:var(--panel);border-left:3px solid var(--green)}.binding strong{font:700 30px/1.3 ui-monospace,Consolas,monospace;color:var(--green)}.binding small,.note{color:var(--muted)}section{margin-top:34px}h2{margin:0 0 14px;font-size:20px}.steps ol{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}.steps li{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}.steps span{color:var(--muted)}.downloads{display:grid;gap:10px}.download{display:flex;justify-content:space-between;align-items:center;padding:15px 16px;background:var(--panel);border:1px solid var(--line);border-radius:6px;color:var(--text)}.download span{color:var(--muted);font-size:13px}.service,.safety,.legal{color:var(--muted)}.service h2,.safety h2,.legal h1,.legal h2{color:var(--text)}.community{display:inline-block;padding:10px 0;font-weight:700}footer{padding:24px;text-align:center;border-top:1px solid var(--line);color:var(--muted);font-size:13px}@media(max-width:520px){main{width:calc(100% - 28px);padding-top:22px}.intro h1,.legal h1{font-size:30px}.steps li{grid-template-columns:1fr;gap:3px}.download{align-items:flex-start;flex-direction:column}.binding strong{font-size:26px}}