*,*::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}}

:root{--font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;--font-head:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;--mono:ui-monospace,SFMono-Regular,Consolas,"Cascadia Mono",monospace;
--bg:#f2f7f3;--surface:#fff;--ink:#1b2b24;--ink-strong:#0f1d17;--muted:#5c7266;--line:#d3e2d8;--primary:#1a7455;--primary-ink:#fff;--accent:#d9701c;--link:#106547;--link-h:#0a4a33;--focus:#d9701c;
--cta:#c4460f;--cta-h:#a23809;--cta-ink:#fff;--gold:#f2b544;--gold-ink:#3a2a00;--top-bg:#fffaf0;--top-shadow:0 6px 18px rgba(217,112,28,.18);--code-bg:#e3f0e8;--pre-bg:#12241c;--pre-ink:#d9f5e6;--note-bg:#eef6f0;--key-bg:#e8f5ec;--thead-bg:#e2f0e7;--chip-bg:#fff;--cross-bg:#fff4e6;--step-bg:#d9701c;--step-ink:#fff;--rank-bg:#1a7455;--rank-ink:#fff;
--ok:#1a7455;--ok-ink:#fff;--warn:#f2b544;--warn-ink:#3a2a00;--radius:12px;--radius-s:8px;--radius-btn:8px}
[data-theme=dark]{--bg:#0d1813;--surface:#14241d;--ink:#e3f3ea;--ink-strong:#fff;--muted:#96b3a4;--line:#254236;--primary:#59d6a2;--primary-ink:#06251a;--accent:#ffa651;--link:#7fe3b8;--link-h:#b4f2d5;--focus:#ffa651;
--cta:#ff8a45;--cta-h:#ffa46c;--cta-ink:#2a1103;--top-bg:#1f2a20;--top-shadow:none;--code-bg:#1d3327;--pre-bg:#08120d;--pre-ink:#cdeedd;--note-bg:#162a21;--key-bg:#173327;--thead-bg:#1a3226;--chip-bg:#162a21;--cross-bg:#2d2416;--step-bg:#ffa651;--step-ink:#2a1103;--rank-bg:#59d6a2;--rank-ink:#06251a;--ok:#59d6a2;--ok-ink:#06251a}
body{font-size:16.5px}
.hd{background:var(--primary);color:#fff;position:sticky;top:0;z-index:30}
[data-theme=dark] .hd{background:#0b2419;border-bottom:1px solid var(--line)}
.hd .wrap{display:flex;align-items:center;gap:16px;padding:10px 0}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;margin-right:auto}
.logo svg{width:36px;height:36px;flex:none}
.logo b{font-size:1.28rem;letter-spacing:.06em}
.logo small{display:block;font-size:.7rem;opacity:.85;font-weight:400}
.site-nav{display:flex;gap:4px;flex-wrap:wrap}
.site-nav a{color:#fff;text-decoration:none;padding:.35em .8em;border-radius:8px;font-size:.92rem}
.site-nav a:hover,.site-nav a[aria-current]{background:rgba(255,255,255,.18)}
.hd .theme-btn,.hd .nav-btn{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.skip:focus{position:static;width:auto;height:auto;clip:auto;background:#fff;color:#000;padding:6px}
.hero{background:linear-gradient(180deg,#e2f3e8,var(--bg));padding:46px 0 30px;border-bottom:1px solid var(--line)}
[data-theme=dark] .hero{background:linear-gradient(180deg,#0f2a1f,var(--bg))}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}
.hero h1{font-size:clamp(1.9rem,4.4vw,2.8rem);line-height:1.3}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p{max-width:32em;margin:12px 0 0}
.kit{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:0 8px 24px rgba(20,80,55,.1)}
.kit h2{font-size:1rem;margin-bottom:10px}
.kit-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.kit a{display:flex;flex-direction:column;padding:10px 12px;border-radius:10px;border:1px solid var(--line);text-decoration:none;color:var(--ink);background:var(--bg)}
.kit a b{font-size:1rem}.kit a span{font-size:.8rem;color:var(--muted)}
.kit a:hover{border-color:var(--primary)}
.docs{display:grid;grid-template-columns:250px minmax(0,1fr);gap:34px;padding:26px 0 56px;align-items:start}
.side{position:sticky;top:70px;max-height:calc(100vh - 86px);overflow:auto;padding-right:6px;font-size:.92rem}
.side h2{font-size:.78rem;letter-spacing:.08em;color:var(--muted);margin:16px 0 4px;font-weight:800}
.side h2:first-child{margin-top:0}
.side ul{list-style:none;margin:0;padding:0}
.side a{display:block;padding:4px 10px;border-radius:6px;color:var(--ink);text-decoration:none}
.side a:hover{background:var(--key-bg)}
.side a[aria-current]{background:var(--primary);color:var(--primary-ink);font-weight:700}
.content{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 34px;min-width:0}
.content h1{font-size:clamp(1.6rem,3.4vw,2.15rem);margin-bottom:10px}
.content h2{font-size:1.35rem;margin:1.7em 0 .5em;padding-left:12px;border-left:5px solid var(--accent)}
.content h3{font-size:1.08rem;margin:1.2em 0 .3em}
.os{list-style:none;padding:0;margin:0 0 14px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.os li{font-size:.8rem;font-weight:700;padding:.15em .75em;border-radius:6px;background:var(--key-bg);color:var(--primary);border:1px solid var(--line)}
.os .meta{background:none;border:0;color:var(--muted);font-weight:400;padding:0}
.lede{font-size:1.06rem;margin:0 0 1.2em}
.steps>li::before{border-radius:10px;width:36px;height:36px}
.steps>li:not(:last-child)::after{left:17px}
.keybox{border-radius:var(--radius-s);background:var(--key-bg);border:1px solid var(--line)}
.dir{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0 0 1em}
.dir section{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.dir h3{font-size:1rem;margin:0 0 6px}
.dir ul{list-style:none;margin:0;padding:0}.dir li{margin:.3em 0;font-size:.94rem}
.cards4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:0 0 1.2em}
.cards4 a{display:flex;flex-direction:column;gap:4px;padding:14px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink)}
.cards4 a:hover{border-color:var(--primary);box-shadow:0 4px 14px rgba(20,80,55,.12)}
.cards4 b{font-size:1.05rem}.cards4 span{font-size:.84rem;color:var(--muted)}
.cards4 i{font-style:normal;font-size:.74rem;color:var(--primary);font-weight:700}
.home-body{padding:26px 0 44px}
.home-body h2{font-size:1.45rem;margin:1.6em 0 .6em}
.bc--mini{border-radius:var(--radius)}
.ft{background:#0f2a1f;color:#cfe8da;padding:30px 0 22px}
[data-theme=dark] .ft{background:#08120d}
.ft a{color:#e4f5ec}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
.ft h2{font-size:.9rem;margin-bottom:8px;color:#fff}
.ft ul{list-style:none;margin:0;padding:0}.ft li{margin:4px 0;font-size:.9rem}
.ft p{font-size:.86rem;color:#a8cbb9}
.ft-bot{margin-top:16px;padding-top:12px;border-top:1px solid rgba(255,255,255,.15);color:#a8cbb9}
.notfound{text-align:center;padding:100px 0}
.notfound b{display:block;font-size:5.5rem;color:var(--accent);line-height:1}
@media(max-width:1000px){.docs{grid-template-columns:minmax(0,1fr)}.side{position:static;max-height:none;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:12px}.hero-grid{grid-template-columns:1fr}.dir{grid-template-columns:1fr 1fr}.cards4{grid-template-columns:1fr 1fr}.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}}
@media(max-width:560px){.dir,.cards4,.kit-grid,.ft-grid{grid-template-columns:1fr}}