:root{--bg:#f7f8f6;--surface:#ffffff;--text:#1d2320;--muted:#5b655f;--line:#dfe4e0;--accent:#1f7a5c;--accent-soft:#e3f1ea;--warn-bg:#fff6e5;--warn-line:#f0d49a;color-scheme:light dark}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#121614;--surface:#1a201d;--text:#e7ece9;--muted:#a3ada7;--line:#2c3430;--accent:#5cc29b;--accent-soft:#1d3129;--warn-bg:#2b2416;--warn-line:#5e4b22}}
:root[data-theme="dark"]{--bg:#121614;--surface:#1a201d;--text:#e7ece9;--muted:#a3ada7;--line:#2c3430;--accent:#5cc29b;--accent-soft:#1d3129;--warn-bg:#2b2416;--warn-line:#5e4b22}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","PingFang SC","Apple SD Gothic Neo","Noto Sans CJK SC",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--accent)}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
header{border-bottom:1px solid var(--line);background:var(--surface)}
header .wrap{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;justify-content:space-between;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text);text-decoration:none}
.brand svg{width:32px;height:32px;flex:none}
nav.langs{display:flex;flex-wrap:wrap;gap:4px 10px;font-size:14px}
nav.langs a{text-decoration:none;color:var(--muted)}
nav.langs a[aria-current="true"]{color:var(--accent);font-weight:600}
main{padding:28px 0 48px}
h1{font-size:28px;line-height:1.25;margin:0 0 8px}
h2{font-size:20px;line-height:1.35;margin:32px 0 8px}
h3{font-size:17px;margin:20px 0 6px}
p,li{overflow-wrap:anywhere}
.lead{font-size:18px;color:var(--muted);margin:0 0 20px}
.meta{color:var(--muted);font-size:14px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:16px 0}
.card>:first-child{margin-top:0}
.card>:last-child{margin-bottom:0}
.summary{background:var(--accent-soft);border-color:transparent}
.note{background:var(--warn-bg);border-color:var(--warn-line)}
.table{width:100%;overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:8px 6px}
th{font-weight:600}
details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin:10px 0}
summary{cursor:pointer;font-weight:600}
.btns{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600}
.btn.secondary{background:var(--surface);color:var(--accent);border:1px solid var(--line)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn{color:#0f1a15}}
:root[data-theme="dark"] .btn{color:#0f1a15}
ul.features{padding-left:20px}
footer{border-top:1px solid var(--line);padding:20px 0 32px;color:var(--muted);font-size:14px}
footer a{color:var(--muted)}