:root{color-scheme:light dark;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:#f6f8f7;color:#162622;--surface:#fff;--muted:#4e605a;--line:#dce5e1;--brand:#176b50;--link:#176b50;--soft:#edf5f1}
*{box-sizing:border-box}
body{margin:0;padding:40px 20px;line-height:1.6}
main{max-width:520px;margin:auto;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:36px}
header{text-align:center}
.icon{display:block;margin:0 auto 22px;border-radius:18px}
.eyebrow{color:var(--muted);font-size:13px;letter-spacing:.12em;margin:0 0 6px}
h1{font-size:40px;letter-spacing:-.03em;line-height:1.2;margin:0 0 12px}
.intro{font-size:19px;margin:0 0 12px}
.version{font-size:13px;color:var(--muted);margin:0}
.actions{margin-top:30px}
a{color:var(--link);text-underline-offset:4px}
.primary,.secondary{display:flex;justify-content:center;align-items:center;gap:12px;min-height:52px;padding:12px 16px;font-size:16px;font-weight:650;text-decoration:none;border-radius:12px;cursor:pointer;transition:background-color .15s,color .15s}
.primary{background:var(--brand);color:#fff}
.primary:hover{background:#12543f}
.secondary{border:1px solid var(--line);margin-top:10px;color:var(--link)}
.secondary:hover{background:var(--soft)}
a:focus-visible,summary:focus-visible{outline:3px solid #b46c12;outline-offset:4px}
.hint,.note{font-size:13px;color:var(--muted);margin:14px 0 0}
.compatibility,.steps,.verification{border-top:1px solid var(--line);margin-top:26px;padding-top:22px}
h2{font-size:16px;margin:0 0 16px}
dl{margin:0;font-size:14px}
dl div{display:grid;grid-template-columns:72px 1fr;gap:12px;margin-top:12px}
dt{font-weight:650}dd{margin:0;color:var(--muted)}
.note{padding:12px;background:var(--soft);border-radius:10px}
ol{padding-left:22px;font-size:14px;color:var(--muted);margin:0}
li+li{margin-top:10px}
summary{min-height:44px;cursor:pointer;font-size:14px}
.verification p{font-size:12px;color:var(--muted);margin:8px 0}
code{display:block;font-size:12px;overflow-wrap:anywhere;user-select:all;line-height:1.8}
footer{margin-top:28px;text-align:center;font-size:12px;color:var(--muted)}
footer a{display:inline-flex;align-items:center;min-height:44px;margin:0 8px}
footer p{margin:6px 0 0}
@media(max-width:420px){body{padding:16px 12px}main{padding:28px 22px;border-radius:20px}h1{font-size:36px}}
@media(prefers-color-scheme:dark){:root{background:#101a16;color:#eef5f1;--surface:#192620;--muted:#bfcdc5;--line:#35483e;--brand:#176b50;--link:#91dfbd;--soft:#213b2c}.primary:hover{background:#12543f}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}