@font-face{font-family:"Barlow Condensed";font-weight:500;font-display:swap;src:url(/assets/fonts/barlow-condensed-500-latin.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-weight:600;font-display:swap;src:url(/assets/fonts/barlow-condensed-600-latin.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-weight:700;font-display:swap;src:url(/assets/fonts/barlow-condensed-700-latin.woff2) format("woff2")}

:root{
  --desk:#E3E4E0;
  --shell:#F2F2EF;
  --shell-2:#E9EAE6;
  --paper:#F7F7F4;
  --groove:#D5D7D2;
  --edge:#C3C6C1;
  --ink:#232527;
  --ink-2:#55595D;
  --ink-3:#6F7478;
  --sky:#1C9BD1;
  --sky-ink:#0E6A93;
  --sky-wash:#DDEFF7;
  --key:#26282B;
  --lcd:#1D2023;
  --lcd-ink:#D3EEF9;
  --lcd-dim:#8FA3AE;
  --cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --lab:"Barlow Condensed","PingFang SC","Microsoft YaHei",sans-serif;
  --wrap:1264px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{margin:0}
body{background:var(--desk);color:var(--ink);font-family:var(--cn);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{max-width:100%}
.nw{white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--key);color:#fff;padding:8px 14px;z-index:20}
.skip:focus{left:12px;top:12px}
:focus-visible{outline:3px solid var(--sky);outline-offset:3px}

/* ── 顶部风险条 ── */
.risk{background:var(--ink);color:#E6E8E9;font-size:13px;line-height:1.55;padding:8px 20px}
.risk p{max-width:1200px;margin:0 auto;display:flex;gap:10px;align-items:baseline}
.risk b{font-family:var(--lab);font-weight:600;letter-spacing:.14em;font-size:13px;color:#8FD3F0;flex:none}

/* ── 顶栏 ── */
.bar{max-width:var(--wrap);margin:0 auto;padding:14px 32px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand svg{width:30px;height:30px;display:block}
.brand span{font-family:var(--lab);font-weight:700;font-size:23px;letter-spacing:.2em;line-height:1}
.nav{display:flex;gap:4px;margin:0;padding:0;list-style:none;flex:1}
.nav a{display:block;padding:6px 11px;border-radius:8px;text-decoration:none;font-size:15px;color:var(--ink-2)}
.nav a:hover,.nav a[aria-current="page"]{background:var(--shell);color:var(--ink)}
.search{display:flex;align-items:center;background:var(--shell);border:1px solid var(--edge);border-radius:10px;padding:0 10px;height:38px;flex:none}
.search input{border:0;background:transparent;font:inherit;font-size:14px;width:170px;outline:none;color:var(--ink)}
.search input::placeholder{color:var(--ink-3)}
.search svg{width:16px;height:16px;flex:none;margin-right:6px}
.menu-btn{display:none;margin-left:auto;font:inherit;font-size:14px;background:var(--shell);border:1px solid var(--edge);border-radius:10px;height:38px;padding:0 14px;color:var(--ink);cursor:pointer}

/* ── 首页首屏 ── */
.hero{max-width:var(--wrap);margin:0 auto;padding:22px 32px 40px;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);grid-template-rows:auto 1fr;column-gap:52px;align-items:start}
.intro{grid-column:1;grid-row:1;padding-top:26px}
.next{grid-column:1;grid-row:2}
.device{grid-column:2;grid-row:1 / span 2}
.plate{grid-column:2;grid-row:1;justify-self:end;align-self:start;margin:20px 20px 0 0;z-index:2}
.label{margin:0 0 14px;font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:10px}
.label b,.chip{font-family:var(--lab);font-weight:600;letter-spacing:.18em;font-size:13px;color:var(--sky-ink);border:1px solid currentColor;border-radius:4px;padding:0 6px;line-height:20px}
.hero h1{margin:0 0 22px;font-size:clamp(36px,4.1vw,52px);line-height:1.24;font-weight:700;letter-spacing:-.025em}
.lede{margin:0;color:var(--ink-2);font-size:17px;max-width:30em}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 22px}
.key-btn{display:inline-flex;align-items:center;gap:10px;height:50px;padding:0 20px;border-radius:12px;text-decoration:none;font-size:16px;font-weight:600;transition:transform .08s ease,box-shadow .08s ease}
.key-btn small{font-family:var(--lab);font-weight:600;letter-spacing:.14em;font-size:13px;opacity:.7}
.key-dark{background:var(--key);color:#F4F5F5;box-shadow:0 4px 0 #0E0F10}
.key-light{background:var(--shell);color:var(--ink);border:1px solid var(--edge);box-shadow:0 4px 0 var(--edge)}
.key-btn:active{transform:translateY(3px);box-shadow:0 1px 0 #0E0F10}
.pick{display:grid;grid-template-columns:auto 1fr;column-gap:16px;text-decoration:none;background:var(--shell);border:1px solid var(--edge);border-left:4px solid var(--sky);border-radius:10px;padding:14px 18px;max-width:34em}
.pick-no{grid-row:1 / span 3;font-family:var(--lab);font-weight:700;font-size:34px;line-height:1;color:var(--sky-ink);padding-top:2px}
.pick-tag{font-size:13px;color:var(--ink-3)}
.pick-title{font-size:17px;font-weight:700;line-height:1.45;margin:2px 0 4px}
.pick-note{font-size:14px;color:var(--ink-2);line-height:1.6}
.pick:hover .pick-title{color:var(--sky-ink)}

.device{background:linear-gradient(180deg,var(--shell) 0%,var(--shell-2) 100%);border-radius:28px;padding:20px;box-shadow:inset 0 1px 0 #fff,0 2px 4px rgba(35,37,39,.06),0 40px 70px -40px rgba(35,37,39,.45);position:relative}
.device-top{display:flex;gap:16px;min-height:224px}
.lcd{flex:1;min-width:0;background:var(--lcd);border-radius:14px;padding:14px 16px;color:var(--lcd-ink);box-shadow:inset 0 2px 8px rgba(0,0,0,.55);display:flex;flex-direction:column;gap:6px}
.lcd-k{font-family:var(--lab);font-weight:600;font-size:13px;letter-spacing:.2em;color:#6CC6EC;display:flex;justify-content:space-between}
.lcd-k i{font-style:normal;color:#56606A}
.lcd-t{font-size:15px;line-height:1.6;margin:0}
.plate-slot{width:316px;flex:none}
.controls{display:block;width:100%;height:auto;margin-top:8px}
.controls text{font-family:var(--lab)}
.controls .cn{font-family:var(--cn);font-weight:600}
.controls a{cursor:pointer;outline:none}
.controls a .hl{transition:stroke .12s ease}
.controls a:hover .hl,.controls a:focus-visible .hl{stroke:var(--sky)}
.controls a:hover .lbl,.controls a:focus-visible .lbl{fill:var(--sky-ink)}
.controls a:hover .press,.controls a:focus-visible .press{transform:translateY(2px)}
.controls .press{transition:transform .08s ease}
.device-foot{margin:6px 4px 0;font-size:13px;color:var(--ink-3);display:flex;justify-content:space-between;gap:12px}
.device-foot b{font-family:var(--lab);font-weight:600;letter-spacing:.16em;color:var(--ink-2)}
.keys{display:none}

.plate{width:316px;background:linear-gradient(160deg,#E4E5E1 0%,#D3D5D0 100%);border:1px solid #BFC2BC;border-radius:10px;padding:14px 18px 12px;position:relative;box-shadow:inset 0 1px 0 rgba(255,255,255,.8),0 1px 2px rgba(0,0,0,.08)}
.plate::before,.plate::after{content:"";position:absolute;top:9px;width:7px;height:7px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#F4F4F2,#9A9E99)}
.plate::before{left:9px}.plate::after{right:9px}
.plate-head{display:flex;justify-content:space-between;align-items:baseline;padding:0 12px;font-size:13px;color:var(--ink-2)}
.plate-head b{font-family:var(--lab);font-weight:600;letter-spacing:.2em;font-size:13px}
.plate-code{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:8px 0;background:#F6F6F3;border:1px solid #C7CAC4;border-radius:8px;padding:4px 4px 4px 14px}
.plate-code code{font-family:var(--lab);font-weight:700;font-size:32px;letter-spacing:.16em;line-height:1.2;color:var(--ink)}
.copy{font:inherit;font-size:15px;font-weight:600;height:44px;min-width:72px;padding:0 14px;border:0;border-radius:7px;background:var(--sky-ink);color:#fff;cursor:pointer;box-shadow:0 3px 0 #084A68}
.copy:active{transform:translateY(2px);box-shadow:0 1px 0 #127AA6}
.copy.done{background:var(--key);box-shadow:0 3px 0 #0E0F10}
.plate-gain{margin:0;font-size:14.5px;font-weight:600;line-height:1.5}
.plate-gain span{white-space:nowrap}
.plate-gain sup{font-size:12px;color:var(--sky-ink)}
.plate-foot{margin:4px 0 0;font-size:13px;line-height:1.5;color:var(--ink-2)}
.invite-link{display:flex;align-items:center;justify-content:center;gap:5px;min-height:44px;margin:10px 0;background:var(--key);color:#fff;border:1px solid #171A1C;border-radius:7px;text-decoration:none;font-size:15px;font-weight:600;box-shadow:0 2px 0 #0E0F10}
.invite-link span{font-size:12px;font-weight:400;color:#D3EEF9}
.invite-link:hover{background:#153F53;border-color:var(--sky-ink)}
.invite-link:active{transform:translateY(1px);box-shadow:0 1px 0 #0E0F10}
.plate-foot a{text-underline-offset:3px}

/* ── 首页下方各区 ── */
.band{max-width:var(--wrap);margin:0 auto;padding:44px 32px}
.band + .band{padding-top:12px}
.band-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 18px;margin:0 0 20px;border-top:2px solid var(--ink);padding-top:14px}
.band-head .chip{align-self:center}
.band-head h2{margin:0;font-size:24px;line-height:1.35}
.band-head p{margin:0;color:var(--ink-2);font-size:15px;flex-basis:100%}
.quick{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 22px}
.quick a{display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:14px;text-decoration:none;background:var(--shell);border:1px solid var(--edge);border-radius:12px;padding:12px 16px;box-shadow:0 3px 0 var(--edge)}
.quick a:hover{border-color:var(--sky)}
.quick a:hover .q-t{color:var(--sky-ink)}
.q-n{font-family:var(--lab);font-weight:700;font-size:15px;letter-spacing:.08em;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#F8F8F6;border:2px solid var(--edge);color:var(--ink-2)}
.q-t{font-size:16px;font-weight:600;line-height:1.45}
.q-a{font-family:var(--lab);font-weight:600;font-size:13px;letter-spacing:.14em;color:var(--ink-3)}
.quick .q-tool .q-n{background:var(--sky);border-color:var(--sky);color:#fff}

.chapters{display:grid;gap:18px}
.chap{display:grid;grid-template-columns:260px minmax(0,1fr);gap:28px;background:var(--paper);border:1px solid var(--edge);border-radius:18px;padding:24px 26px}
.chap-no{display:block;font-family:var(--lab);font-weight:700;font-size:54px;line-height:.9;color:var(--sky-ink);letter-spacing:.02em}
.chap-head h3{margin:10px 0 8px;font-size:21px;line-height:1.35}
.chap-head p{margin:0 0 10px;font-size:15px;color:var(--ink-2)}
.chap-head a{font-size:15px;font-weight:600;color:var(--sky-ink)}
.rows{list-style:none;margin:0;padding:0;counter-reset:row}
.rows li{border-top:1px solid var(--groove)}
.rows li:first-child{border-top:0}
.rows a{display:grid;grid-template-columns:auto 1fr;column-gap:14px;padding:12px 2px;text-decoration:none}
.rows a::before{counter-increment:row;content:counter(row,decimal-leading-zero);grid-row:1 / span 2;font-family:var(--lab);font-weight:600;font-size:15px;letter-spacing:.1em;color:var(--ink-3);padding-top:2px}
.rows .r-t{font-size:16.5px;font-weight:700;line-height:1.5}
.rows .r-d{font-size:14.5px;color:var(--ink-2);line-height:1.6}
.rows a:hover .r-t{color:var(--sky-ink)}

.persona{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:28px;background:var(--lcd);color:var(--lcd-ink);border-radius:20px;padding:30px 32px}
.persona h2{margin:0 0 12px;font-size:23px;color:#fff}
.persona p{margin:0 0 12px;color:#C9D6DC}
.persona a{color:#8FD3F0}
.rules{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.rules li{border:1px solid #3A4046;border-radius:10px;padding:10px 14px;font-size:15px;color:#E4EEF2}
.rules b{display:block;font-family:var(--lab);font-weight:600;letter-spacing:.16em;font-size:13px;color:#6CC6EC}

.toolcard{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;background:var(--shell);border:1px solid var(--edge);border-radius:18px;padding:22px 26px;text-decoration:none}
.toolcard h3{margin:4px 0 6px;font-size:20px}
.toolcard p{margin:0;color:var(--ink-2);font-size:15px}
.toolcard .readout{font-family:var(--lab);font-weight:600;letter-spacing:.12em;background:var(--lcd);color:#6CC6EC;border-radius:12px;padding:14px 18px;font-size:15px;line-height:1.6;white-space:nowrap}
.toolcard:hover h3{color:var(--sky-ink)}

/* ── 页脚 ── */
.foot{background:var(--ink);color:#C9CED1;margin-top:40px}
.foot-in{max-width:var(--wrap);margin:0 auto;padding:36px 32px 28px;display:grid;grid-template-columns:minmax(0,1.4fr) repeat(2,minmax(0,.8fr));gap:28px}
.foot .brand span{color:#fff}
.foot .brand svg circle[fill="#232527"]{fill:#E6E8E9}
.foot p{margin:12px 0 0;font-size:14px;line-height:1.75}
.foot h2{margin:0 0 10px;font-family:var(--lab);font-weight:600;letter-spacing:.2em;font-size:13px;color:#8FD3F0}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot a{color:#E6E8E9;text-decoration:none;font-size:14.5px}
.foot a:hover{color:#8FD3F0;text-decoration:underline}
.foot-base{max-width:var(--wrap);margin:0 auto;padding:14px 32px 26px;border-top:1px solid #3A3E42;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:#9AA1A6}
.foot-base b{font-family:var(--lab);font-weight:600;letter-spacing:.18em}

/* ── 文章页 ── */
.sheet{max-width:var(--wrap);margin:0 auto;padding:8px 32px 20px}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:14px;color:var(--ink-3);margin:6px 0 18px}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{color:var(--sky-ink);text-decoration:underline}
.doc{background:var(--paper);border:1px solid var(--edge);border-radius:24px;padding:34px 40px 30px;box-shadow:0 30px 60px -44px rgba(35,37,39,.45)}
.doc-head{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:30px;align-items:center;border-bottom:1px solid var(--groove);padding-bottom:26px}
.doc-tag{margin:0 0 12px;display:flex;align-items:center;gap:10px;font-size:14px}
.doc-tag a{color:var(--ink-2);text-decoration:none}
.doc-tag a:hover{color:var(--sky-ink)}
.doc-tag .section{color:var(--ink-2);text-decoration:none}
.eyebrow{flex-wrap:wrap}
.kicker{white-space:nowrap}
.doc-head h1{margin:0 0 12px;font-size:clamp(27px,3vw,38px);line-height:1.3;letter-spacing:-.005em}
.doc-deck{margin:0 0 14px;font-size:16.5px;color:var(--ink-2)}
.doc-meta{display:flex;flex-wrap:wrap;gap:4px 16px;font-size:14px;color:var(--ink-3)}
.doc-meta a{color:var(--ink-2)}
.doc-cover{margin:0;background:var(--shell);border:1px solid var(--edge);border-radius:18px;padding:12px;box-shadow:inset 0 1px 0 #fff}
.doc-cover img{display:block;width:100%;height:auto;border-radius:10px}
.doc-cover figcaption{font-size:13px;color:var(--ink-3);margin-top:8px;line-height:1.5}
.doc-body{display:grid;grid-template-columns:230px minmax(0,1fr);gap:44px;margin-top:28px}
.toc{position:sticky;top:18px;align-self:start;font-size:14px;border:1px solid var(--edge);border-radius:14px;background:var(--shell);padding:14px 14px 10px}
.toc-k{display:block;font-family:var(--lab);font-weight:600;letter-spacing:.18em;font-size:13px;color:var(--ink-3);margin:0 0 8px}
.toc ol{list-style:none;margin:0;padding:0;display:grid;gap:2px;counter-reset:toc}
.toc a{display:grid;grid-template-columns:24px 1fr;gap:6px;padding:5px 6px;border-radius:7px;text-decoration:none;color:var(--ink-2);line-height:1.45}
.toc a::before{counter-increment:toc;content:counter(toc,decimal-leading-zero);font-family:var(--lab);font-weight:600;color:var(--ink-3)}
.toc a:hover{background:#fff;color:var(--ink)}

.prose{max-width:44em;font-size:17px;line-height:1.9;counter-reset:sec}
.prose > p,.prose li{text-wrap:pretty}
.prose p{margin:0 0 1.1em}
.prose h2{position:relative;margin:2.1em 0 .75em;font-size:24px;line-height:1.4;padding-top:16px;border-top:1px solid var(--groove);scroll-margin-top:16px}
.prose h2::before{counter-increment:sec;content:"§" counter(sec,decimal-leading-zero);display:block;font-family:var(--lab);font-weight:600;font-size:14px;letter-spacing:.16em;color:var(--sky-ink);margin-bottom:2px}
.prose > h2:first-child,.prose > .answer + h2{margin-top:1.2em}
.prose h3{margin:1.6em 0 .55em;font-size:19px;line-height:1.5;scroll-margin-top:16px}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.4em}
.prose li{margin:.3em 0}
.prose a{color:var(--sky-ink);text-underline-offset:3px}
.prose strong{font-weight:700;color:#111}
.prose code{font-family:var(--lab);font-size:.95em;background:var(--shell);border:1px solid var(--groove);border-radius:4px;padding:0 5px}
.answer{background:var(--lcd);color:var(--lcd-ink);border-radius:16px;padding:18px 22px;margin:0 0 1.4em;box-shadow:inset 0 2px 8px rgba(0,0,0,.45)}
.answer .k,.note .k,.eg .k,.warn .k,.press-box .k{display:block;font-family:var(--lab);font-weight:600;letter-spacing:.18em;font-size:13px;margin-bottom:4px}
.answer .k{color:#6CC6EC}
.answer p{margin:0;font-size:18px;line-height:1.75}
.answer p + p{margin-top:.6em;font-size:16px;color:#C9D6DC}
.note{border-left:4px solid var(--sky);background:var(--sky-wash);border-radius:0 12px 12px 0;padding:14px 18px;margin:1.4em 0}
.note .k{color:var(--sky-ink)}
.note p{margin:0}
.note p + p{margin-top:.6em}
.eg{background:#fff;border:1px dashed #A9AEA8;border-radius:14px;padding:16px 20px;margin:1.4em 0}
.eg .k{color:var(--ink-3)}
.eg p{margin:0 0 .6em}
.eg p:last-child{margin-bottom:0}
.eg ol,.eg ul{margin-bottom:.4em}
.warn{border:2px solid var(--ink);border-radius:14px;padding:14px 18px;margin:1.4em 0;background:var(--shell)}
.warn .k{color:var(--ink)}
.warn p{margin:0}
.press-box{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:1.4em 0}
.press-box div{background:var(--shell);border:1px solid var(--edge);border-radius:12px;padding:12px 16px;box-shadow:0 3px 0 var(--edge)}
.press-box .k{color:var(--sky-ink)}
.press-box p{margin:0;font-size:15.5px;line-height:1.7}
.tbl{overflow-x:auto;margin:1.2em 0 1.5em;border:1px solid var(--edge);border-radius:12px;background:#fff}
.tbl table{border-collapse:collapse;width:100%;min-width:520px;font-size:15px;line-height:1.6}
.tbl caption{caption-side:top;text-align:left;font-size:13px;color:var(--ink-3);padding:10px 14px 0}
.tbl th,.tbl td{padding:10px 14px;border-bottom:1px solid var(--groove);text-align:left;vertical-align:top}
.tbl th{background:var(--shell);font-weight:700;white-space:nowrap}
.tbl tr:last-child td{border-bottom:0}
.steps{list-style:none;padding:0 !important;counter-reset:step}
.steps > li{position:relative;padding:0 0 0 46px;margin:0 0 1em}
.steps > li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:2px;width:30px;height:30px;border-radius:50%;background:var(--key);color:#fff;font-family:var(--lab);font-weight:700;font-size:15px;display:grid;place-items:center}
.shot{margin:1.5em 0}
.shot img{display:block;width:100%;height:auto;border:1px solid var(--edge);border-radius:12px;background:#fff}
.shot figcaption{font-size:14px;color:var(--ink-3);margin-top:8px;line-height:1.6}
.qa{margin-top:2.2em;border-top:2px solid var(--ink);padding-top:10px}
.qa h2{border-top:0;padding-top:0;margin-top:.6em}
.qa h3{margin:1.2em 0 .4em;font-size:17.5px}
.qa p{margin:0 0 .8em}
.source{font-size:14.5px;color:var(--ink-2);border-top:1px dashed var(--edge);padding-top:12px;margin-top:2em}

.stuck{margin:34px 0 0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;background:linear-gradient(160deg,#E4E5E1 0%,#D6D8D3 100%);border:1px solid #BFC2BC;border-radius:16px;padding:18px 22px}
.stuck h2{margin:0 0 4px;font-size:18px}
.stuck p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.65}
.stuck a{white-space:nowrap}
.more{margin:26px 0 0}
.more h2{margin:0 0 10px;font-size:18px}
.more ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.more a{display:block;height:100%;text-decoration:none;background:var(--shell);border:1px solid var(--edge);border-radius:12px;padding:12px 14px;font-size:15px;font-weight:600;line-height:1.5}
.more a small{display:block;font-family:var(--lab);font-weight:600;letter-spacing:.14em;font-size:13px;color:var(--ink-3);margin-bottom:2px}
.more a:hover{border-color:var(--sky);color:var(--sky-ink)}

/* ── 目录页 / 章节页 ── */
.shelf{max-width:var(--wrap);margin:0 auto;padding:8px 32px 20px}
.shelf-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:end;padding:10px 0 22px;border-bottom:2px solid var(--ink);margin-bottom:22px}
.shelf-head h1{margin:8px 0 8px;font-size:clamp(28px,3vw,40px);line-height:1.25}
.shelf-head p{margin:0;color:var(--ink-2);max-width:42em}
.shelf-count{font-family:var(--lab);font-weight:700;font-size:15px;letter-spacing:.14em;background:var(--lcd);color:#6CC6EC;border-radius:10px;padding:8px 14px;white-space:nowrap}
.shelf .chap{margin-bottom:18px}

/* ── 合规页 ── */
.page{background:var(--paper);border:1px solid var(--edge);border-radius:24px;padding:34px 40px 30px;max-width:900px}
.page h1{margin:6px 0 10px;font-size:clamp(27px,3vw,36px);line-height:1.3}
.page .doc-meta{margin-bottom:20px}

/* ── 工具页 ── */
.calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;margin-top:22px}
.calc-in{background:linear-gradient(180deg,var(--shell) 0%,var(--shell-2) 100%);border:1px solid var(--edge);border-radius:22px;padding:22px}
.calc-in fieldset{border:0;margin:0 0 14px;padding:0}
.calc-in legend,.field span{font-size:14px;font-weight:600;color:var(--ink-2)}
.field{display:grid;gap:4px;margin-bottom:12px}
.field small{font-size:13px;color:var(--ink-3);line-height:1.5}
.field input{font:inherit;font-family:var(--lab);font-weight:600;font-size:21px;letter-spacing:.04em;height:48px;border:1px solid var(--edge);border-radius:10px;background:#fff;padding:0 12px;color:var(--ink);width:100%}
.field input:focus{border-color:var(--sky);outline:2px solid var(--sky-wash)}
.pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.seg{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:6px}
.seg label{position:relative}
.seg input{position:absolute;opacity:0;inset:0}
.seg span{display:block;text-align:center;height:46px;line-height:46px;border-radius:10px;border:1px solid var(--edge);background:#F8F8F6;font-weight:700;font-size:16px;cursor:pointer;box-shadow:0 3px 0 var(--edge)}
.seg input:checked + span{background:var(--key);color:#fff;border-color:var(--key);box-shadow:0 3px 0 #0E0F10}
.seg input:focus-visible + span{outline:3px solid var(--sky);outline-offset:2px}
.calc-out{background:var(--lcd);color:var(--lcd-ink);border-radius:22px;padding:22px 24px;box-shadow:inset 0 2px 10px rgba(0,0,0,.5);align-self:start;position:sticky;top:18px}
.calc-out .k{font-family:var(--lab);font-weight:600;letter-spacing:.2em;font-size:13px;color:#6CC6EC}
.big{font-family:var(--lab);font-weight:700;font-size:54px;line-height:1.05;letter-spacing:.01em;margin:6px 0 2px;color:#fff;word-break:break-all}
.big.neg{color:#F3B1A4}
.big.pos{color:#9FE3C4}
.sub{margin:0 0 14px;color:var(--lcd-dim);font-size:15px}
.lines{list-style:none;margin:0;padding:0;border-top:1px solid #3A4046}
.lines li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #30353A;font-size:15px}
.lines li span:first-child{color:#B7C5CC}
.lines li span:last-child{font-family:var(--lab);font-weight:600;font-size:18px;letter-spacing:.04em;color:#fff;text-align:right}
.calc-note{margin:14px 0 0;font-size:13.5px;color:var(--lcd-dim);line-height:1.6}
.calc-note a{color:#8FD3F0}
.guide{margin-top:26px;background:var(--paper);border:1px solid var(--edge);border-radius:18px;padding:6px 24px}
.guide summary{cursor:pointer;font-weight:700;font-size:17px;padding:14px 0}
.guide[open] summary{border-bottom:1px solid var(--groove);margin-bottom:10px}

/* ── 站内搜索 ── */
.finder{display:flex;gap:10px;margin:18px 0 8px}
.finder input{flex:1;font:inherit;font-size:18px;height:54px;border:1px solid var(--edge);border-radius:12px;padding:0 16px;background:#fff}
.finder button{font:inherit;font-weight:700;font-size:16px;border:0;border-radius:12px;background:var(--key);color:#fff;padding:0 22px;box-shadow:0 4px 0 #0E0F10;cursor:pointer}
.finder-status{font-size:14.5px;color:var(--ink-2);margin:0 0 12px;min-height:1.6em}
.hits{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.hits a{display:block;text-decoration:none;background:var(--paper);border:1px solid var(--edge);border-radius:12px;padding:12px 16px}
.hits b{display:block;font-size:17px;line-height:1.5}
.hits span{display:block;font-size:14.5px;color:var(--ink-2)}
.hits small{font-family:var(--lab);font-weight:600;letter-spacing:.14em;font-size:13px;color:var(--sky-ink)}
.hits a:hover b{color:var(--sky-ink)}
.nohit{background:var(--shell);border:1px solid var(--edge);border-radius:12px;padding:14px 18px}

/* ── 404 ── */
.lost{max-width:760px;margin:30px auto;text-align:left}
.lost .lcd{min-height:140px;margin-bottom:18px}
.lost .lcd-t{font-size:18px}

/* ── 响应式 ── */
@media (max-width:1180px){
  .nav,.search{display:none}
  .menu-btn{display:inline-flex;align-items:center;min-height:44px}
  .bar.open{flex-wrap:wrap}
  .bar.open .nav{display:flex;flex-wrap:wrap;order:3;flex-basis:100%}
  .bar.open .nav a{min-height:44px;display:flex;align-items:center}
  .bar.open .search{display:flex;order:4;flex-basis:100%;height:44px}
  .bar.open .search input{width:100%}
}
@media (min-width:981px) and (max-width:1180px){
  .hero{column-gap:26px}
  .plate,.plate-slot{width:272px}
  .device-top{min-height:242px}
  .lcd{padding:14px 12px}
  .lcd-k i{display:none}
}
@media (max-width:1080px){
  .doc-head{grid-template-columns:minmax(0,1fr) 240px}
  .doc-body{grid-template-columns:200px minmax(0,1fr);gap:30px}
}
@media (max-width:980px){
  .menu-btn,.copy{min-height:44px}
  .search,.search input{min-height:44px}
  .finder input{min-height:54px;flex-shrink:0}
  .bar.open .nav a,.toc a{min-height:44px;align-items:center}
  .nav,.search{display:none}
  .menu-btn{display:inline-flex;align-items:center}
  .bar.open{flex-wrap:wrap}
  .bar.open .nav{display:flex;flex-wrap:wrap;order:3;flex-basis:100%}
  .bar.open .search{display:flex;order:4;flex-basis:100%}
  .bar.open .search input{width:100%}
  .hero{grid-template-columns:minmax(0,1fr);padding:10px 20px 32px}
  .intro,.next,.device,.plate{grid-column:1;grid-row:auto}
  .intro{order:1;padding-top:8px}
  .plate{order:2;justify-self:stretch;width:auto;margin:20px 0 0}
  .next{order:3}
  .device{order:4;margin-top:6px}
  .plate-slot{display:none}
  .device-top{min-height:0}
  .band{padding:34px 20px}
  .chap{grid-template-columns:minmax(0,1fr);gap:12px}
  .persona{grid-template-columns:minmax(0,1fr)}
  .foot-in{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .foot-in > div:first-child{grid-column:1 / -1}
  .sheet,.shelf{padding:4px 20px 16px}
  .doc,.page{padding:26px 24px 24px}
  .doc-head{grid-template-columns:minmax(0,1fr)}
  .doc-cover{max-width:420px}
  .doc-body{grid-template-columns:minmax(0,1fr);gap:18px}
  .toc{position:static}
  .toc ol{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:10px}
  .calc{grid-template-columns:minmax(0,1fr)}
  .calc-out{position:static}
}
@media (max-width:640px){
  .bar{padding:12px 16px;gap:12px}
  .brand span{font-size:21px}
  .risk{padding:7px 16px}
  .hero{padding:6px 16px 28px}
  .hero h1{font-size:34px;margin-bottom:14px}
  .lede{font-size:16px}
  .plate{margin-top:16px}
  .plate-code code{font-size:30px}
  .actions{margin:20px 0 18px}
  .key-btn{flex:1 1 auto;justify-content:center}
  .device{border-radius:22px;padding:14px}
  .device-top,.controls{display:none}
  .keys{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;list-style:none;margin:0;padding:0}
  .keys a{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:74px;text-align:center;text-decoration:none;background:#F7F7F4;border:1px solid var(--edge);border-radius:12px;box-shadow:0 3px 0 var(--edge);font-size:15px;font-weight:600;line-height:1.3;padding:8px 4px}
  .keys a b{font-family:var(--lab);font-weight:600;letter-spacing:.12em;font-size:13px;color:var(--sky-ink)}
  .keys a.dark{background:var(--key);color:#F4F5F5;border-color:var(--key);box-shadow:0 3px 0 #0E0F10}
  .keys a.dark b{color:#8FD3F0}
  .device-foot{margin-top:12px}
  .band{padding:28px 16px}
  .band-head h2{font-size:21px}
  .quick{grid-template-columns:minmax(0,1fr)}
  .quick a{grid-template-columns:40px 1fr;padding:10px 12px}
  .q-n{width:40px;height:40px}
  .q-a{display:none}
  .chap{padding:18px 16px;border-radius:14px}
  .chap-no{font-size:42px}
  .persona{padding:22px 18px;border-radius:16px}
  .toolcard{grid-template-columns:minmax(0,1fr);padding:18px}
  .toolcard .readout{white-space:normal}
  .foot-in{grid-template-columns:minmax(0,1fr);padding:28px 16px 20px}
  .foot-base{padding:12px 16px 22px}
  .sheet,.shelf{padding:2px 12px 12px}
  .crumbs{margin:4px 4px 12px;font-size:13px}
  .doc,.page{padding:20px 16px 18px;border-radius:18px}
  .doc-head h1{font-size:25px}
  .doc-cover{max-width:320px}
  .doc-deck{font-size:15.5px}
  .toc ol{grid-template-columns:minmax(0,1fr)}
  .prose{font-size:16.5px;line-height:1.85}
  .prose h2{font-size:21px}
  .prose h3{font-size:18px}
  .answer{padding:14px 16px}
  .answer p{font-size:17px}
  .press-box{grid-template-columns:minmax(0,1fr)}
  .stuck{grid-template-columns:minmax(0,1fr)}
  .more ul{grid-template-columns:minmax(0,1fr)}
  .shelf-head{grid-template-columns:minmax(0,1fr)}
  .shelf-count{justify-self:start}
  .calc-in,.calc-out{padding:16px;border-radius:16px}
  .pair{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}
  .big{font-size:42px}
  .finder{flex-direction:column}
  .finder button{height:48px}
}