:root{
  --bg:#FCFBF9; --surface:#FFFFFF; --sunk:#F4F1EC; --hover:#EDE9E2;
  --ink:#1B1815; --ink-2:#514C45; --muted:#8A8278;
  --rule:#E5E1D9; --rule-2:#D2CCC1;
  --accent:#C0501C; --accent-soft:#FBEDE4; --on-accent:#FFFFFF;
  --hero:#F0EADD; --hero-ink:#1B1611; --hero-tone:#8A8175; --hero-glow:#C85A20;
  --code-bg:#F6F3EE; --note:#2C6E8F; --note-bg:#E8F2F7;
  --track-a:#B4471A; --track-b:#3B6B7D;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#131110; --surface:#1A1816; --sunk:#221F1C; --hover:#2A2622;
  --ink:#EFEBE5; --ink-2:#BDB6AB; --muted:#8B8378;
  --rule:#2C2824; --rule-2:#3D3831;
  --accent:#E7702F; --accent-soft:#33200F; --on-accent:#171310;
  --hero:#1F1B15; --hero-ink:#F1EBDF; --hero-tone:#8E857A; --hero-glow:#E7702F;
  --code-bg:#211E1A; --note:#7BB6D4; --note-bg:#14242C;
  --track-a:#E7702F; --track-b:#7FB0C4;
}}
:root[data-theme="dark"]{
  --bg:#131110; --surface:#1A1816; --sunk:#221F1C; --hover:#2A2622;
  --ink:#EFEBE5; --ink-2:#BDB6AB; --muted:#8B8378;
  --rule:#2C2824; --rule-2:#3D3831;
  --accent:#E7702F; --accent-soft:#33200F; --on-accent:#171310;
  --hero:#1F1B15; --hero-ink:#F1EBDF; --hero-tone:#8E857A; --hero-glow:#E7702F;
  --code-bg:#211E1A; --note:#7BB6D4; --note-bg:#14242C;
  --track-a:#E7702F; --track-b:#7FB0C4;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Noto Sans SC",-apple-system,BlinkMacSystemFont,sans-serif;
  line-height:1.75;-webkit-font-smoothing:antialiased;font-size:15px;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
a{color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px;}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;}}

/* ══ 顶栏 ══ */
.bar1{display:flex;align-items:center;gap:14px;padding:0 clamp(14px,3vw,32px);height:56px;
  background:var(--surface);border-bottom:1px solid var(--rule);}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:15.5px;flex:none;
  text-decoration:none;color:var(--ink);}
.brand .m{width:24px;height:24px;border-radius:6px;background:var(--accent);
  display:grid;place-items:center;color:var(--on-accent);font-size:12px;font-weight:700;flex:none;}
.brand span{white-space:nowrap;}
.search{flex:1;max-width:380px;display:flex;align-items:center;gap:8px;
  text-align:left;font-family:inherit;cursor:pointer;
  background:var(--sunk);border:1px solid var(--rule);border-radius:8px;
  padding:6px 12px;color:var(--muted);font-size:13.5px;}
.search .k{margin-left:auto;font-family:"JetBrains Mono",monospace;font-size:10.5px;
  border:1px solid var(--rule-2);border-radius:4px;padding:1px 5px;}
.bar1-r{margin-left:auto;display:flex;align-items:center;gap:7px;flex:none;}
.seg{display:flex;background:var(--sunk);border:1px solid var(--rule);border-radius:8px;overflow:hidden;}
.seg a,.seg button{padding:4px 11px;font-size:12.5px;color:var(--muted);white-space:nowrap;
  text-decoration:none;display:inline-flex;align-items:center;line-height:1.5;
  border-right:1px solid var(--rule);}
.seg a:last-child,.seg button:last-child{border-right:none;}
.seg a:hover,.seg button:hover{color:var(--ink);background:var(--hover);}
.seg [aria-pressed="true"]{background:var(--accent);color:var(--on-accent);font-weight:500;}
.icon-btn{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;
  border:1px solid var(--rule);background:var(--sunk);font-size:14px;flex:none;}
.icon-btn:hover{background:var(--hover);}
#burger{display:none;}

.bar2{position:sticky;top:0;z-index:30;display:flex;align-items:stretch;gap:2px;
  padding:0 clamp(14px,3vw,32px);background:var(--surface);border-bottom:1px solid var(--rule);
  overflow-x:auto;scrollbar-width:none;}
.bar2::-webkit-scrollbar{display:none;}
.bar2 a,.bar2 button{padding:11px 13px 9px;font-size:14px;color:var(--ink-2);white-space:nowrap;
  text-decoration:none;display:inline-flex;align-items:center;
  border-bottom:2px solid transparent;}
.bar2 a:hover,.bar2 button:hover{color:var(--ink);}
.bar2 [aria-current="true"]{color:var(--accent);border-bottom-color:var(--accent);font-weight:500;}
.bar2 .mark::before{content:"◆";font-size:8px;vertical-align:2px;margin-right:5px;color:var(--accent);}

/* ══ 文档布局：宽屏三栏，窄屏退化 ══ */
.shell{display:grid;grid-template-columns:262px minmax(0,1fr) 224px;
  max-width:1760px;margin:0 auto;align-items:start;gap:0;}
.side{position:sticky;top:41px;max-height:calc(100vh - 41px);overflow-y:auto;
  padding:22px 12px 48px;border-right:1px solid var(--rule);}
.side-h{padding:7px 10px 5px;font-size:11px;font-family:"JetBrains Mono",monospace;
  letter-spacing:.1em;color:var(--muted);}
.side-h:not(:first-child){margin-top:14px;}
.side a{display:block;padding:6px 10px;font-size:13.5px;color:var(--ink-2);
  text-decoration:none;border-radius:6px;line-height:1.55;}
.side a:hover{background:var(--hover);color:var(--ink);}
.side a.on{background:var(--accent-soft);color:var(--accent);font-weight:500;box-shadow:inset 2px 0 0 var(--accent);}

main{padding:32px clamp(20px,4vw,60px) 90px;min-width:0;}
.measure{max-width:78ch;}          /* 中文可比英文更宽 */
.crumb{font-size:12px;color:var(--muted);margin-bottom:10px;font-family:"JetBrains Mono",monospace;}
main h1{font-size:clamp(26px,3.2vw,34px);font-weight:700;margin:0 0 8px;letter-spacing:-.02em;
  text-wrap:balance;line-height:1.3;}
.lede{color:var(--ink-2);font-weight:300;margin:0;max-width:70ch;font-size:16px;}
.src{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;font-size:12px;color:var(--muted);
  padding:9px 0 0;margin:16px 0 28px;border-top:1px solid var(--rule);}
.src a{color:var(--accent);text-decoration:none;}
main h2{font-size:21px;font-weight:700;margin:38px 0 10px;padding-top:14px;
  border-top:1px solid var(--rule);letter-spacing:-.01em;}
main h3{font-size:16.5px;font-weight:700;margin:24px 0 8px;}
main p{max-width:78ch;color:var(--ink-2);margin:0 0 13px;font-weight:300;}
main strong{color:var(--ink);font-weight:500;}

pre{background:var(--code-bg);border:1px solid var(--rule);border-radius:9px;
  margin:0 0 16px;overflow-x:auto;max-width:none;}
pre .bar{display:flex;align-items:center;padding:6px 13px;border-bottom:1px solid var(--rule);
  font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--muted);}
pre .copy{margin-left:auto;font-size:11px;color:var(--muted);padding:1px 7px;
  border:1px solid var(--rule-2);border-radius:4px;}
pre code{display:block;padding:13px 15px;font-family:"JetBrains Mono",monospace;
  font-size:13px;line-height:1.7;color:var(--ink);white-space:pre;}
.tok{color:var(--accent);} .cmt{color:var(--muted);}
.note{display:flex;gap:11px;background:var(--note-bg);border-left:3px solid var(--note);
  border-radius:0 8px 8px 0;padding:13px 16px;margin:0 0 16px;max-width:78ch;}
.note b{color:var(--note);font-size:13px;display:block;margin-bottom:2px;}
.note p{margin:0;font-size:13.5px;}
.tabs{border:1px solid var(--rule);border-radius:9px;overflow:hidden;margin-bottom:16px;}
.tabs-h{display:flex;background:var(--sunk);border-bottom:1px solid var(--rule);overflow-x:auto;}
.tabs-h button{padding:8px 15px;font-size:13px;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap;}
.tabs-h button[aria-selected="true"]{color:var(--accent);border-bottom-color:var(--accent);font-weight:500;background:var(--surface);}
.tabs-b{padding:14px 15px;}
.t-wrap{overflow-x:auto;margin-bottom:16px;}
table{width:100%;border-collapse:collapse;font-size:13.5px;}
th{text-align:left;font-weight:500;font-size:12px;color:var(--muted);padding:7px 12px;border-bottom:1px solid var(--rule-2);white-space:nowrap;}
td{padding:8px 12px;border-bottom:1px solid var(--rule);color:var(--ink-2);font-weight:300;}
td code{font-family:"JetBrains Mono",monospace;font-size:12.5px;background:var(--code-bg);padding:1px 5px;border-radius:3px;color:var(--ink);}
.pager{display:flex;flex-wrap:wrap;gap:12px;margin-top:48px;padding-top:20px;border-top:1px solid var(--rule);}
.pg{flex:1 1 220px;border:1px solid var(--rule);border-radius:9px;padding:12px 15px;text-decoration:none;background:var(--surface);}
.pg:hover{border-color:var(--accent);}
.pg span{display:block;font-size:11px;color:var(--muted);font-family:"JetBrains Mono",monospace;}
.pg b{font-size:14px;font-weight:500;}
.pg.next{text-align:right;}
.toc{position:sticky;top:41px;padding:32px 18px 48px;font-size:12.5px;max-height:calc(100vh - 41px);overflow-y:auto;}
.toc .h{font-family:"JetBrains Mono",monospace;font-size:10.5px;letter-spacing:.1em;color:var(--muted);margin-bottom:9px;}
.toc a{display:block;padding:3.5px 0 3.5px 10px;color:var(--muted);text-decoration:none;border-left:1.5px solid var(--rule);line-height:1.5;}
.toc a.on{color:var(--accent);border-left-color:var(--accent);}

/* ══ 首页：橙块主视觉 + 卡片下半 ══ */
.home{max-width:1760px;margin:0 auto;}
.kick{font-family:"JetBrains Mono",monospace;font-size:11.5px;letter-spacing:.26em;
  color:var(--muted);margin:0 0 22px;}

/* —— 主视觉 —— */
.hero{position:relative;isolation:isolate;overflow:hidden;
  background:var(--hero);color:var(--hero-ink);
  padding:clamp(44px,6.5vw,92px) clamp(20px,5vw,68px) clamp(36px,4vw,62px);}
/* 左下角一团极淡的暖光，给纯色底一点纵深，不喧宾夺主 */
.hero::before{content:"";position:absolute;z-index:-1;inset:0;
  background:
    radial-gradient(116% 88% at 3% 106%, color-mix(in srgb, var(--hero-glow) 17%, transparent) 0%, transparent 56%),
    radial-gradient(88% 72% at 98% 0%, color-mix(in srgb, var(--hero-glow) 7%, transparent) 0%, transparent 52%),
    linear-gradient(172deg, #FFFFFF 0%, transparent 46%);}
/* 底部一道细线收口，与下方深色特性条区分开 */
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;z-index:-1;
  background:linear-gradient(90deg, var(--hero-glow) 0%, color-mix(in srgb, var(--hero-glow) 30%, transparent) 40%, transparent 78%);}
.hero .kick{color:var(--hero-tone);opacity:1;margin-bottom:28px;}
.hero h1{font-weight:900;font-size:clamp(38px,7.2vw,86px);line-height:1.08;
  margin:0;letter-spacing:-.035em;text-wrap:balance;}
/* 终端光标：这一站讲的东西就住在终端里 */
.caret{display:inline-block;width:.5em;height:.86em;margin-left:.14em;
  background:var(--hero-glow);vertical-align:-.06em;
  animation:blink 1.15s steps(1,end) infinite;}
@keyframes blink{0%,52%{opacity:1;}53%,100%{opacity:0;}}
@media(prefers-reduced-motion:reduce){.caret{animation:none;}}
.hero .promise{font-size:clamp(16px,1.9vw,21px);font-weight:300;
  margin:30px 0 34px;max-width:46ch;line-height:1.65;color:var(--hero-ink);opacity:.82;}
.hero .promise b{font-weight:700;opacity:1;}
.cta{display:flex;flex-wrap:wrap;gap:12px;}
.cta a{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;
  text-decoration:none;font-size:15.5px;font-weight:500;border-radius:2px;}
.cta .p{background:var(--hero-ink);color:var(--hero);}
.cta .s{border:1.5px solid color-mix(in srgb, var(--hero-ink) 28%, transparent);color:var(--hero-ink);}
.cta .p:hover{filter:brightness(1.08);}
.cta .s:hover{border-color:var(--hero-ink);}
.hero-n{display:flex;flex-wrap:wrap;gap:10px 44px;margin-top:42px;
  font-family:"JetBrains Mono",monospace;font-size:12px;color:var(--hero-tone);letter-spacing:.05em;}

.strip{background:var(--ink);color:var(--bg);display:grid;border-top:1px solid rgba(255,255,255,.07);
  grid-template-columns:repeat(auto-fit,minmax(190px,1fr));}
.strip div{padding:20px clamp(16px,2.4vw,28px);border-right:1px solid rgba(255,255,255,.11);}
.strip div:last-child{border-right:none;}
.strip b{display:block;font-size:16px;font-weight:700;margin-bottom:2px;}
.strip span{font-family:"JetBrains Mono",monospace;font-size:10.5px;letter-spacing:.14em;opacity:.55;text-transform:uppercase;}

/* —— 下半：分区 —— */
.sec{padding:clamp(44px,5vw,74px) clamp(20px,5vw,68px);}
.sec.alt{background:var(--sunk);}
.sec-kick{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--muted);margin:0 0 13px;}
.sec h2{font-weight:900;
  font-size:clamp(23px,3vw,34px);margin:0 0 12px;letter-spacing:-.015em;
  line-height:1.28;text-wrap:balance;}
.sec .sub{color:var(--ink-2);font-weight:300;margin:0 0 34px;max-width:62ch;font-size:15.5px;}

.tracks{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;}
.track{background:var(--surface);border:1px solid var(--rule);border-radius:12px;
  padding:26px 26px 22px;border-top:3px solid var(--tc);display:flex;flex-direction:column;gap:12px;}
.track .lbl{font-family:"JetBrains Mono",monospace;font-size:10.5px;letter-spacing:.18em;color:var(--tc);}
.track h3{margin:0;font-size:22px;font-weight:700;letter-spacing:-.015em;}
.track .d{margin:0;font-size:14.5px;color:var(--ink-2);font-weight:300;line-height:1.72;}
.track ul{margin:0;padding-left:17px;font-size:13.5px;color:var(--ink-2);font-weight:300;line-height:1.85;}
.track .foot{margin-top:auto;padding-top:14px;border-top:1px dashed var(--rule-2);
  font-size:12.5px;color:var(--muted);display:flex;gap:8px;align-items:baseline;}
.track .foot b{color:var(--tc);font-family:"JetBrains Mono",monospace;font-size:12px;}

/* 编号站点列表 */
/* 五站是一条有先后的路径，排成多列会读不出顺序，固定单列 */
.rows{display:flex;flex-direction:column;}
.row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;
  align-items:baseline;padding:18px 0;border-bottom:1px solid var(--rule);text-decoration:none;}
.row:hover .rt,.row:hover .no{color:var(--accent);}
.no{font-family:"JetBrains Mono",monospace;font-size:12px;color:var(--muted);
  padding-top:3px;min-width:24px;}
.rt{font-size:15.5px;font-weight:500;margin:0 0 2px;line-height:1.5;}
.rd{font-size:13.5px;color:var(--muted);font-weight:300;margin:0;line-height:1.6;}
.rm{margin-left:auto;font-family:"JetBrains Mono",monospace;font-size:11.5px;color:var(--muted);white-space:nowrap;}
.row.soon .rt,.row.soon .no{opacity:.45;}
.row.soon .rm{color:var(--accent);}

.why{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;}
.why div{padding:20px 22px;background:var(--surface);border:1px solid var(--rule);border-radius:11px;}
.why b{display:block;font-size:15.5px;font-weight:700;margin-bottom:6px;}
.why p{margin:0;font-size:13.5px;color:var(--ink-2);font-weight:300;line-height:1.75;}

.quote{max-width:60ch;margin:34px 0 0;padding:24px 0 0;border-top:1px solid var(--rule-2);}
.quote p{font-family:"Noto Serif SC",Georgia,serif;font-size:clamp(17px,2.1vw,22px);
  font-weight:700;line-height:1.7;margin:0 0 14px;color:var(--ink);letter-spacing:-.01em;}
.quote cite{font-style:normal;font-size:12px;color:var(--muted);
  font-family:"JetBrains Mono",monospace;letter-spacing:.16em;}

.home-foot{padding:28px clamp(20px,5vw,68px) 64px;border-top:1px solid var(--rule);
  color:var(--muted);font-size:12.5px;font-weight:300;line-height:1.85;}

@media(max-width:560px){
  .hero{padding:34px 18px 30px;}
  .strip div{border-right:none;border-bottom:1px solid rgba(255,255,255,.11);}
}

/* ══ 响应式 ══ */
@media(max-width:1240px){
  .shell{grid-template-columns:246px minmax(0,1fr);}
  .toc{display:none;}
}
@media(max-width:900px){
  .shell{grid-template-columns:1fr;}
  .side{position:fixed;top:97px;left:0;bottom:0;width:280px;background:var(--surface);
    z-index:40;transform:translateX(-100%);transition:transform .22s;border-right:1px solid var(--rule);max-height:none;}
  .side.open{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.35);}
  #burger{display:grid;}
  .search{display:none;}
  .brand span{display:none;}
  main{padding:24px 18px 70px;}
}
@media(max-width:560px){
  .seg a,.seg button{padding:4px 8px;font-size:12px;}
  .hero{padding:34px 18px 30px;}
  .strip div{border-right:none;border-bottom:1px solid rgba(255,255,255,.11);}
}
/* ══════════ 文档正文 ══════════ */
.doc{max-width:78ch;}
.doc > *:first-child{margin-top:0;}
.doc h1{font-size:19px;font-weight:700;margin:28px 0 10px;letter-spacing:-.01em;}
.doc h2{font-size:21px;font-weight:700;margin:38px 0 10px;padding-top:14px;
  border-top:1px solid var(--rule);letter-spacing:-.01em;scroll-margin-top:96px;}
.doc h3{font-size:16.5px;font-weight:700;margin:24px 0 8px;scroll-margin-top:96px;}
.doc h4{font-size:15px;font-weight:700;margin:18px 0 6px;}
.doc p{color:var(--ink-2);margin:0 0 13px;font-weight:300;}
.doc strong{color:var(--ink);font-weight:500;}
.doc ul,.doc ol{color:var(--ink-2);font-weight:300;padding-left:22px;margin:0 0 14px;}
.doc li{margin:4px 0;}
.doc li > p{margin:0 0 6px;}
.doc a{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent;}
.doc a:hover{border-bottom-color:var(--accent);}
.doc img{max-width:100%;height:auto;border-radius:8px;border:1px solid var(--rule);}
.doc hr{border:none;border-top:1px solid var(--rule);margin:26px 0;}
.doc blockquote{margin:0 0 14px;padding:2px 0 2px 15px;border-left:3px solid var(--rule-2);color:var(--muted);}

.doc pre{background:var(--code-bg);border:1px solid var(--rule);border-radius:9px;
  margin:0 0 16px;overflow-x:auto;padding:13px 15px;}
.doc pre code{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:13px;
  line-height:1.7;color:var(--ink);white-space:pre;background:none;padding:0;border:none;}
.doc :not(pre) > code{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:12.5px;
  background:var(--code-bg);border:1px solid var(--rule);border-radius:4px;
  padding:1px 5px;color:var(--ink);word-break:break-word;}

.doc table{width:100%;border-collapse:collapse;font-size:13.5px;margin:0 0 4px;}
.doc thead th{text-align:left;font-weight:500;font-size:12px;color:var(--muted);
  padding:7px 12px;border-bottom:1px solid var(--rule-2);white-space:nowrap;}
.doc td{padding:8px 12px;border-bottom:1px solid var(--rule);color:var(--ink-2);font-weight:300;}
.doc table{display:block;overflow-x:auto;}

/* 提示框 */
.note{display:flex;gap:11px;background:var(--note-bg);border-left:3px solid var(--note);
  border-radius:0 8px 8px 0;padding:13px 16px;margin:0 0 16px;}
.note > div{min-width:0;flex:1;}
.note b{color:var(--note);font-size:13px;display:block;margin-bottom:3px;}
.note p:last-child{margin-bottom:0;}
.note-warning{--note:#B06A1E;--note-bg:#FBF1E3;}
.note-danger{--note:#B0341E;--note-bg:#FBE9E5;}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .note-warning{--note:#D9A05A;--note-bg:#2A1F11;}
  :root:not([data-theme="light"]) .note-danger{--note:#D98A78;--note-bg:#2A1512;}}
:root[data-theme="dark"] .note-warning{--note:#D9A05A;--note-bg:#2A1F11;}
:root[data-theme="dark"] .note-danger{--note:#D98A78;--note-bg:#2A1512;}

/* 步骤 */
.steps{list-style:none;padding:0;margin:0 0 18px;counter-reset:s;}
.steps > .step{counter-increment:s;position:relative;padding:0 0 18px 38px;
  border-left:1px solid var(--rule);margin-left:11px;}
.steps > .step:last-child{border-left-color:transparent;padding-bottom:0;}
.steps > .step::before{content:counter(s);position:absolute;left:-11px;top:0;
  width:22px;height:22px;border-radius:50%;background:var(--accent-soft);color:var(--accent);
  font-family:"JetBrains Mono",monospace;font-size:11px;font-weight:700;
  display:grid;place-items:center;}
.step-t{display:block;font-weight:500;color:var(--ink);margin:0 0 6px;font-size:15px;}

/* 卡片 */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin:0 0 18px;}
.card{display:block;padding:16px 18px;background:var(--surface);border:1px solid var(--rule);
  border-radius:10px;text-decoration:none;}
a.card:hover{border-color:var(--accent);}
.card-t{display:block;font-weight:500;color:var(--ink);margin-bottom:4px;font-size:15px;}
.card p{margin:0;font-size:13.5px;}

/* 折叠 */
.acc{border:1px solid var(--rule);border-radius:9px;margin:0 0 10px;background:var(--surface);}
.acc > summary{padding:11px 15px;cursor:pointer;font-weight:500;font-size:14.5px;list-style:none;}
.acc > summary::-webkit-details-marker{display:none;}
.acc > summary::before{content:"▸";margin-right:8px;color:var(--muted);display:inline-block;transition:transform .15s;}
.acc[open] > summary::before{transform:rotate(90deg);}
.acc > *:not(summary){padding:0 15px;}
.acc > *:last-child{padding-bottom:12px;}

/* 标签页 */
.tabs{border:1px solid var(--rule);border-radius:9px;overflow:hidden;margin:0 0 16px;}
.tabs-h{display:flex;background:var(--sunk);border-bottom:1px solid var(--rule);overflow-x:auto;}
.tabs-h button{padding:8px 15px;font-size:13px;color:var(--muted);white-space:nowrap;
  border-bottom:2px solid transparent;background:none;border-top:none;border-left:none;border-right:none;cursor:pointer;}
.tabs-h button[aria-selected="true"]{color:var(--accent);border-bottom-color:var(--accent);
  font-weight:500;background:var(--surface);}
.tab{padding:14px 15px;}
.tab[hidden]{display:none;}
.tab > *:first-child{margin-top:0;}
.codegroup .tab{padding:0;}
.codegroup .tab pre{border:none;border-radius:0;margin:0;}

.frame{margin:0 0 16px;padding:0;}
.frame img{width:100%;}
.update{border-left:3px solid var(--rule-2);padding-left:15px;margin:0 0 16px;}
.update-t{display:block;font-family:"JetBrains Mono",monospace;font-size:11px;
  letter-spacing:.1em;color:var(--muted);margin-bottom:6px;}

.src .warn{color:var(--accent);}
.toc a.l3{padding-left:20px;font-size:12px;}

/* ══════════ 搜索弹层 ══════════ */
.dlg{position:fixed;inset:0;z-index:60;background:rgba(20,18,15,.42);
  display:grid;place-items:start center;padding-top:12vh;}
.dlg[hidden]{display:none;}
.dlg-box{width:min(620px,92vw);background:var(--surface);border:1px solid var(--rule-2);
  border-radius:12px;overflow:hidden;box-shadow:0 24px 60px -20px rgba(0,0,0,.4);}
#q{width:100%;padding:15px 18px;border:none;border-bottom:1px solid var(--rule);
  font-size:15.5px;background:none;color:var(--ink);font-family:inherit;outline:none;}
#res{max-height:52vh;overflow-y:auto;}
#res a{display:block;padding:10px 18px;text-decoration:none;border-bottom:1px solid var(--rule);}
#res a:hover,#res a.on{background:var(--hover);}
#res b{display:block;font-size:14.5px;font-weight:500;color:var(--ink);}
#res span{font-size:12px;color:var(--muted);font-family:"JetBrains Mono",monospace;}
#res .empty{padding:18px;color:var(--muted);font-size:13.5px;}

/* ══════════ 每周更新（官方 digest-* 版式） ══════════ */
.digest-meta{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11.5px;
  letter-spacing:.1em;color:var(--muted);margin:0 0 20px;}
.digest-feature{background:var(--surface);border:1px solid var(--rule);border-radius:11px;
  padding:18px 20px;margin:0 0 14px;}
.digest-feature-header{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 12px;margin-bottom:7px;}
.digest-feature-title{font-size:16.5px;font-weight:700;color:var(--ink);}
.digest-feature-pill{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:10.5px;
  letter-spacing:.1em;text-transform:uppercase;padding:2px 8px;border-radius:20px;
  background:var(--accent-soft);color:var(--accent);white-space:nowrap;}
.digest-feature-lede{font-size:14px;color:var(--ink-2);font-weight:300;line-height:1.72;margin:0 0 10px;}
.digest-feature-lede p{margin:0 0 8px;}
.digest-feature-link,.digest-feature-try{display:inline-block;font-size:13.5px;color:var(--accent);
  text-decoration:none;margin-right:14px;}
.digest-feature-link:hover,.digest-feature-try:hover{text-decoration:underline;}
.digest-feature-try{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:12.5px;}
.digest-wins{margin:26px 0 0;padding-top:18px;border-top:1px solid var(--rule);}
.digest-wins-title{display:block;font-size:15px;font-weight:700;margin-bottom:12px;color:var(--ink);}
.digest-wins-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px 22px;}
.digest-wins-grid > *{font-size:13.5px;color:var(--ink-2);font-weight:300;line-height:1.7;}
.w-full{width:100%;}

/* ══════════ 社区批注（独立于上游镜像） ══════════ */
.community{max-width:78ch;margin:38px 0 0;padding:18px 20px;
  background:var(--sunk);border:1px dashed var(--rule-2);border-radius:10px;}
.community-h{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 12px;margin-bottom:10px;
  padding-bottom:9px;border-bottom:1px solid var(--rule);}
.community-h b{font-size:15px;font-weight:700;color:var(--ink);}
.community-h span{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:10.5px;
  letter-spacing:.12em;color:var(--muted);}
.community > *:last-child{margin-bottom:0;}
.community p{font-size:14px;color:var(--ink-2);font-weight:300;margin:0 0 10px;}
.community blockquote{margin:10px 0 0;padding-left:14px;border-left:2px solid var(--rule-2);
  color:var(--muted);font-size:13px;}