*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 var(--font);-webkit-font-smoothing:antialiased;overflow-wrap:anywhere}
img,svg{max-width:100%}
a{color:var(--link);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--link-h)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{font-family:var(--font-head);line-height:1.3;margin:0;color:var(--ink-strong,var(--ink))}
p{margin:0 0 1em}
code{font:.9em/1.4 var(--mono);background:var(--code-bg);padding:.1em .35em;border-radius:4px}
pre{background:var(--pre-bg);color:var(--pre-ink);padding:14px 16px;border-radius:var(--radius-s);overflow:auto;font:13.5px/1.6 var(--mono);margin:0 0 1.2em}
pre code{background:none;padding:0;color:inherit}
.wrap{width:min(1180px,100% - 32px);margin-inline:auto}
main,article,aside{min-width:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:.55em 1.1em;border-radius:var(--radius-btn);font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:inherit;font-size:.95rem;line-height:1.3}
.btn-aff{background:var(--cta);color:var(--cta-ink);border-color:var(--cta-line,var(--cta))}
.btn-aff:hover{background:var(--cta-h);color:var(--cta-ink)}
.btn-lg{font-size:1.05rem;padding:.75em 1.6em}
.bc-disc{font-size:.78rem;color:var(--muted)}
.crumbs{font-size:.85rem;color:var(--muted);margin:0 0 14px;display:flex;flex-wrap:wrap;gap:2px 0}
.crumbs a{color:var(--muted)}
.crumbs i{font-style:normal;margin:0 .5em;opacity:.6}
.lst{margin:0 0 1.1em;padding-left:1.35em}
.lst li{margin:.3em 0}
.note{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:var(--radius-s);margin:0 0 1.2em;background:var(--note-bg);border:1px solid var(--line);font-size:.95rem}
.note strong{flex:none;font-size:.78rem;padding:.15em .6em;border-radius:99px;background:var(--primary);color:var(--primary-ink);line-height:1.6;margin-top:.15em}
.note-warn strong{background:var(--warn);color:var(--warn-ink)}
.note-ok strong{background:var(--ok);color:var(--ok-ink)}
.note-ad strong{background:var(--muted);color:var(--bg)}
.keybox{margin:0 0 1.4em;padding:14px 16px;border-radius:var(--radius);background:var(--key-bg);border:1px solid var(--line)}
.keybox-label{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.05em;color:var(--primary);margin-bottom:4px}
.keybox p{margin:0;font-size:1.02rem}
.tbl-wrap{overflow-x:auto;margin:0 0 1.4em;border:1px solid var(--line);border-radius:var(--radius-s);background:var(--surface)}
.tbl{width:100%;border-collapse:collapse;font-size:.92rem;min-width:520px}
.tbl th,.tbl td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl thead th{background:var(--thead-bg);font-weight:800;white-space:nowrap}
.tbl tbody th{font-weight:700;white-space:nowrap}
.tbl.wide{min-width:940px}
.tbl tr:last-child th,.tbl tr:last-child td{border-bottom:0}
.faq{margin:1.8em 0 1em}
.faq h2{margin-bottom:12px}
.faq details{border:1px solid var(--line);border-radius:var(--radius-s);background:var(--surface);margin:0 0 8px;padding:0 14px}
.faq summary{cursor:pointer;font-weight:700;padding:12px 0;list-style-position:outside}
.faq details[open] summary{color:var(--primary)}
.faq details p{margin:0 0 12px;color:var(--ink)}
.steps{list-style:none;counter-reset:st;margin:0 0 1.4em;padding:0}
.steps>li{counter-increment:st;position:relative;padding:0 0 18px 54px;margin:0}
.steps>li::before{content:counter(st);position:absolute;left:0;top:0;width:38px;height:38px;border-radius:50%;background:var(--step-bg);color:var(--step-ink);display:grid;place-items:center;font-weight:800;font-family:var(--font-head)}
.steps>li:not(:last-child)::after{content:"";position:absolute;left:18px;top:42px;bottom:4px;width:2px;background:var(--line)}
.step-t{font-size:1.06rem;margin:4px 0 4px}
.step-note{font-size:.9rem;color:var(--muted)}
.linkcards{list-style:none;margin:0 0 1.4em;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.linkcards li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-s);padding:12px 14px;display:flex;flex-direction:column;gap:2px}
.linkcards li>a{font-weight:800;text-decoration:none}
.linkcards li>span{font-size:.88rem;color:var(--muted)}
.chips{list-style:none;padding:0;margin:0 0 1.2em;display:flex;flex-wrap:wrap;gap:8px}
.chips li{padding:.2em .8em;border-radius:99px;background:var(--chip-bg);border:1px solid var(--line);font-size:.86rem}
.cross{margin:1.4em 0;padding:12px 14px;border-left:4px solid var(--accent);background:var(--cross-bg);border-radius:0 var(--radius-s) var(--radius-s) 0;font-size:.98rem}
.cross-lead{color:var(--muted);margin-right:.5em}
.cross a{font-weight:800}
.ctabox{margin:1.4em 0;padding:18px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center}
.ctabox-t{margin:0;font-weight:700;flex:1 1 240px}
.bc-list{display:grid;gap:16px;margin:0 0 1.6em}
.bc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.bc-head{display:flex;align-items:center;flex-wrap:wrap;gap:8px 10px;margin-bottom:6px}
.bc-name{font-size:1.2rem;margin:0}
.bc-name small{font-size:.75em;font-weight:400;color:var(--muted)}
.bc-rank{display:inline-grid;place-items:center;min-width:30px;height:30px;padding:0 6px;border-radius:8px;background:var(--rank-bg);color:var(--rank-ink);font-weight:800;font-family:var(--font-head)}
.bc-badge{font-size:.76rem;font-weight:800;padding:.1em .7em;border-radius:99px;background:var(--gold);color:var(--gold-ink)}
.bc-tag{margin:0 0 .6em;color:var(--ink)}
.bc-why{margin:0 0 .6em;font-size:.95rem;background:var(--key-bg);padding:8px 10px;border-radius:var(--radius-s)}
.bc-why b,.bc-fit b,.bc-warn b{color:var(--primary);margin-right:.5em;font-size:.82rem}
.bc-specs{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:6px 18px;margin:0 0 .7em}
.bc-specs div{min-width:0}
.bc-specs dt{font-size:.76rem;color:var(--muted);font-weight:700}
.bc-specs dd{margin:0;font-size:.92rem}
.bc-empty{margin:0 0 .7em;padding:8px 10px;border-radius:var(--radius-s);background:var(--note-bg);font-size:.92rem;color:var(--muted)}
.bc-fit,.bc-warn{margin:0 0 .5em;font-size:.92rem}
.bc-warn{color:var(--muted)}
.bc-foot{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}
.bc-src{font-size:.78rem;color:var(--muted);flex:1 1 220px}
.bc.is-top{border:2px solid var(--gold);background:var(--top-bg);box-shadow:var(--top-shadow)}
.bc.is-top .bc-name{font-size:1.4rem}
.bc.is-top .btn-aff{padding:.7em 1.5em;font-size:1.05rem}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.theme-btn,.nav-btn{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:var(--radius-btn);padding:.4em .75em;cursor:pointer;font:inherit;font-size:.86rem}
.nav-btn{display:none}
.toc{list-style:none;margin:0;padding:0}
.toc a{display:block;padding:5px 10px;border-left:2px solid var(--line);color:var(--muted);text-decoration:none;font-size:.9rem}
.toc a.on,.toc a:hover{color:var(--primary);border-left-color:var(--primary)}
.foot-disc{font-size:.82rem;color:var(--muted);line-height:1.7}
@media(max-width:820px){.nav-btn{display:inline-block}.bc-head .bc-name{font-size:1.1rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

.skip:focus{position:static;width:auto;height:auto;clip:auto;background:#fff;color:#000;padding:6px;display:block}
.pill{display:inline-block;font-size:.74rem;line-height:1.6;padding:.05em .6em;border-radius:99px;border:1px solid var(--line);white-space:nowrap;font-weight:700}
.pill-ok{background:var(--ok);color:var(--ok-ink);border-color:transparent}
.pill-gap{background:transparent;color:var(--muted);border-style:dashed}
.pill-conflict{background:var(--warn);color:var(--warn-ink);border-color:transparent}
.pill-none{background:transparent;color:var(--muted);border-style:dotted}
.bc-tags{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0 0 .7em;padding:0}
.bc-tags li{font-size:.78rem;padding:.1em .65em;border:1px solid var(--line);border-radius:99px;background:var(--chip-bg);color:var(--ink)}
.bc-tags li.k{border-color:var(--primary);color:var(--primary);font-weight:700}
.bc-list>.bc:last-child:nth-child(even){grid-column:1/-1}
.bc-list>.bc:first-child:not(.is-top)~.bc:last-child:nth-child(odd){grid-column:1/-1}
.dimtable td,.dimtable th{text-align:center}
.dimtable tbody th{text-align:left}
.tbl.wide{min-width:820px}
.btn-lg{font-size:1.02rem}
.foot-disc{font-size:.82rem;line-height:1.75}
.notfound{text-align:center;padding:90px 0}

:root{--font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;--font-head:var(--font);--mono:ui-monospace,SFMono-Regular,Consolas,monospace;
--radius:12px;--radius-s:8px;--radius-btn:8px;
--bg:#f3f4fb;--surface:#fff;--ink:#181a3a;--ink-strong:#0c0e26;--muted:#555a80;--line:#dcdef2;--primary:#4338ca;--primary-ink:#fff;--accent:#0b7f74;--link:#3730a3;--link-h:#1e1b78;--focus:#0b7f74;
--cta:#4338ca;--cta-h:#2f27a3;--cta-ink:#fff;--gold:#ffd54a;--gold-ink:#302400;--top-bg:#f0efff;--top-shadow:0 0 0 3px rgba(67,56,202,.25);--code-bg:#e6e8f6;--pre-bg:#141636;--pre-ink:#e8eaff;--note-bg:#eceefb;--key-bg:#e8e9ff;--thead-bg:#e0e2f6;--chip-bg:#eef0fc;--cross-bg:#e6f5f3;--step-bg:#4338ca;--step-ink:#fff;--rank-bg:#181a3a;--rank-ink:#ffd54a;--ok:#0b7f74;--ok-ink:#fff;--warn:#f5b100;--warn-ink:#2e2100}
[data-theme=dark]{--bg:#0d0f24;--surface:#161936;--ink:#e8eaff;--ink-strong:#fff;--muted:#a9aed6;--line:#2c3060;--primary:#9aa0ff;--primary-ink:#0f1230;--accent:#5fd9cb;--link:#b5baff;--link-h:#d6d9ff;--focus:#5fd9cb;
--cta:#9aa0ff;--cta-h:#b5baff;--cta-ink:#0f1230;--gold:#ffd54a;--gold-ink:#302400;--top-bg:#1e2148;--top-shadow:0 0 0 3px rgba(154,160,255,.3);--code-bg:#22264f;--pre-bg:#080a1c;--pre-ink:#dfe2ff;--note-bg:#1b1e42;--key-bg:#22265a;--thead-bg:#22265a;--chip-bg:#1b1e42;--cross-bg:#10302d;--step-bg:#9aa0ff;--step-ink:#0f1230;--rank-bg:#ffd54a;--rank-ink:#302400;--ok:#5fd9cb;--ok-ink:#06211e}
body{background:var(--bg)}
.hd{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}
.hd .wrap{display:flex;align-items:center;gap:14px;padding:9px 0}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;margin-right:auto}
.logo i{display:grid;place-items:center;width:38px;height:38px;border-radius:9px;background:linear-gradient(135deg,#4338ca,#0b7f74);color:#fff;font:900 1.05rem/1 var(--font);font-style:normal}
.logo b{font-size:1.08rem;display:block;line-height:1.15}.logo small{display:block;font-size:.72rem;color:var(--muted)}
.site-nav{display:flex;gap:2px;flex-wrap:wrap}
.site-nav a{color:var(--ink);text-decoration:none;padding:.4em .8em;font-size:.9rem;border-radius:7px}
.site-nav a:hover{background:var(--key-bg)}.site-nav a[aria-current]{background:var(--primary);color:var(--primary-ink)}
.hero{padding:40px 0 6px;background:linear-gradient(180deg,var(--key-bg),transparent)}
.hero-in{max-width:880px;margin:0 auto;text-align:center}
.hero .tag{display:inline-block;font-weight:800;font-size:.76rem;letter-spacing:.14em;color:var(--primary);background:var(--surface);border:1px solid var(--line);padding:.35em .9em;border-radius:99px;margin-bottom:14px}
.hero h1{font-size:clamp(1.9rem,4.6vw,2.9rem);line-height:1.22;margin:0 0 12px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero .lead{color:var(--muted);max-width:38em;margin:0 auto 18px}
.gosearch{position:relative;max-width:660px;margin:0 auto}
.gosearch form{display:flex;background:var(--surface);border:2px solid var(--primary);border-radius:12px;overflow:hidden}
.gosearch input{flex:1;border:0;background:transparent;font:inherit;font-size:1.02rem;color:var(--ink);padding:.85em 1em;min-width:0}
.gosearch input:focus{outline:none}.gosearch form:focus-within{box-shadow:0 0 0 3px var(--focus)}
.gosearch button{border:0;background:var(--primary);color:var(--primary-ink);font:inherit;font-weight:700;padding:0 1.4em;cursor:pointer}
.gores{position:absolute;left:0;right:0;top:100%;margin:6px 0 0;padding:6px;list-style:none;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px rgba(20,22,54,.18);text-align:left;z-index:30;display:none}
.gores.on{display:block}
.gores a{display:flex;justify-content:space-between;gap:10px;padding:.55em .8em;border-radius:8px;text-decoration:none;color:var(--ink);font-size:.95rem}
.gores a:hover,.gores a.act{background:var(--key-bg)}.gores small{color:var(--muted);flex:none}
.hot{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:14px 0 0;padding:0;list-style:none}
.hot a{font-size:.84rem;padding:.25em .8em;border-radius:99px;background:var(--surface);border:1px solid var(--line);color:var(--ink);text-decoration:none}
.hot a:hover{border-color:var(--primary);color:var(--primary)}
.home-body{padding:10px 0 46px}
.sec{margin:30px 0 8px}
.sec>h2,.home-body h2{font-size:1.45rem;margin:0 0 6px}
.sec>p.sub{color:var(--muted);margin:0 0 14px}
.launch{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:0 0 1em}
.launch a{display:grid;grid-template-columns:44px 1fr;gap:2px 12px;align-items:center;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink)}
.launch a:hover{border-color:var(--primary);box-shadow:0 6px 18px rgba(67,56,202,.14)}
.launch i{grid-row:span 2;display:grid;place-items:center;width:44px;height:44px;border-radius:11px;background:var(--key-bg);color:var(--primary);font:800 1.05rem/1 var(--font);font-style:normal}
.launch b{font-size:1rem}.launch span{font-size:.84rem;color:var(--muted)}
.bc-list--nav{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.bc--nav{border-radius:12px;padding:14px 16px}
.bc--nav.is-top{grid-column:1/-1;border:2px solid var(--primary);background:linear-gradient(110deg,var(--top-bg),var(--surface) 65%)}
.nv-row{display:flex;flex-wrap:wrap;gap:6px 10px;margin:0 0 .5em;font-size:.88rem;color:var(--muted)}
.nv-row b{color:var(--ink)}
.page-grid{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:24px;padding:24px 0 56px;align-items:start}
.side{position:sticky;top:70px;font-size:.9rem}
.side h2{font-size:.76rem;letter-spacing:.12em;color:var(--muted);margin:0 0 8px}
.side .toc{margin-bottom:14px}
.side-box{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:12px;font-size:.84rem;color:var(--muted)}
.side-box b{color:var(--ink);display:block;margin-bottom:4px}
.side-box ul{list-style:none;margin:0;padding:0}.side-box li{margin:3px 0}
.content{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px 32px;min-width:0}
.content h1{font-size:clamp(1.55rem,3.5vw,2.1rem);margin-bottom:8px;line-height:1.28}
.content h2{font-size:1.28rem;margin:1.8em 0 .5em;padding-bottom:.25em;border-bottom:2px solid var(--key-bg)}
.content h3{font-size:1.04rem;margin:1.2em 0 .3em}
.lede{font-size:1.04rem;color:var(--muted);margin:0 0 .8em}
.meta{font-size:.82rem;color:var(--muted);margin:0 0 1.1em;display:flex;flex-wrap:wrap;gap:4px 14px}
.keybox{border:1px solid var(--primary);border-radius:10px;background:var(--key-bg)}
.jump{margin-top:2em;padding-top:16px;border-top:1px solid var(--line)}
.jump h2{font-size:1rem!important;border:0!important;margin:0 0 10px!important;padding:0!important}
.ft{background:#12143a;color:#dcdff8;padding:30px 0 22px;margin-top:10px}
[data-theme=dark] .ft{background:#070819}
.ft a{color:#fff}.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:26px}
.ft h2{font-size:.8rem;letter-spacing:.12em;color:#ffd54a;margin-bottom:10px}
.ft ul{list-style:none;margin:0;padding:0}.ft li{margin:5px 0;font-size:.9rem}.ft p{font-size:.86rem;color:#b9bde6}
.ft-bot{margin-top:16px;padding-top:12px;border-top:1px solid #2c3060;color:#b9bde6}
.notfound b{display:block;font:900 5.5rem/1 var(--font);color:var(--primary)}
@media(max-width:1000px){.launch{grid-template-columns:repeat(2,1fr)}.page-grid{grid-template-columns:1fr}.side{position:static;order:2}.side .toc{display:none}.ft-grid{grid-template-columns:1fr 1fr}}
@media(max-width:820px){.site-nav{display:none;width:100%;order:9}.site-nav.open{display:flex;flex-direction:column}.hd .wrap{flex-wrap:wrap}.content{padding:20px 16px}.bc-list--nav{grid-template-columns:1fr}}
@media(max-width:560px){.launch,.ft-grid{grid-template-columns:1fr}.gosearch button{padding:0 1em}}