@charset "UTF-8";
:root{
  --bg:#f8f4ef;--soft:#f5e4e1;--soft2:#e9edf2;--p:#b73a41;--pd:#7f242b;--pk:#434a59;
  --ink:#32363f;--line:#a98f8b;--ptext:#ffffff;--paper:#fffdf9;
  --shell:1180px;--hdr:70px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 14px)}
body{margin:0;padding-top:var(--hdr);color:var(--ink);background:var(--bg);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.75}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button{border:0;background:none;color:inherit;font:inherit;cursor:pointer}
img{display:block;max-width:100%}
h1,h2,h3,p,ul,figure{margin:0;padding:0}
ul{list-style:none}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.shell{width:min(calc(100% - 40px),var(--shell));margin:0 auto}
.sec{padding:86px 0}
.kick{display:inline-block;font-family:Consolas,monospace;font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--pd);border:1.5px solid currentColor;border-radius:6px;padding:3px 10px}
.shead{max-width:680px;margin:0 auto 44px}
.shead h2{font-size:clamp(27px,3.4vw,40px);font-weight:900;letter-spacing:-.02em;margin-top:12px}
.shead p{margin-top:10px;color:#5f6878;font-size:15px}
/* header */
.lb-hd{position:fixed;inset:0 0 auto 0;z-index:1000;height:var(--hdr);background:var(--paper);
  border-bottom:2.5px solid var(--ink)}
.lb-hdin{display:flex;height:100%;align-items:center;justify-content:space-between;gap:14px}
.lb-brand{display:inline-flex;align-items:center;gap:10px}
.lb-brand img{width:42px;height:42px;border-radius:50%;object-fit:cover;border:2px solid var(--ink)}
.lb-brand strong{display:block;font-size:16px;font-weight:900}
.lb-brand small{display:block;font-size:11px;color:#7a8194;font-family:Consolas,monospace}
.lb-nav ul{display:flex;gap:2px}
.lb-nav a{display:block;padding:8px 13px;font-size:14px;font-weight:700;color:#5c6478;border:2px solid transparent}
.lb-nav a.is-current,.lb-nav a:hover{border-color:var(--ink);background:var(--p);color:var(--ptext);border-radius:8px}
.btn,.lb-cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;
  border-radius:8px;font-weight:800;font-size:14px;border:2px solid var(--ink);transition:.15s}
.lb-cta,.btn-main{background:var(--pk);color:#fff}
.btn-ghost{background:var(--paper)}
.btn-dish{background:var(--ink);color:#fff}
.btn:hover,.lb-cta:hover{transform:translate(-2px,-2px);box-shadow:3px 3px 0 var(--ink)}
.lb-tools{display:none;gap:8px;align-items:center}
.lb-burger{width:40px;height:40px;border:2px solid var(--ink);border-radius:8px;display:grid;place-items:center;background:var(--paper)}
.lb-burger span,.lb-burger span::before,.lb-burger span::after{display:block;width:17px;height:2px;background:var(--ink);position:relative}
.lb-burger span::before,.lb-burger span::after{content:"";position:absolute;left:0}
.lb-burger span::before{top:-5px}.lb-burger span::after{top:5px}
/* hero */
.lb-hero{padding:48px 0 70px}
.lb-heroin{display:grid;grid-template-columns:.92fr 1.08fr;gap:50px;align-items:center}
.lb-h1{font-size:clamp(38px,5.4vw,64px);font-weight:900;line-height:1.06;letter-spacing:-.02em}
.lb-h1 em{font-style:normal;display:block;margin-top:10px;font-size:.34em;font-weight:800;color:var(--pd)}
.lb-lead{margin-top:20px;color:#4d566b;font-size:16px;max-width:540px}
.lb-acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.lb-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.lb-chips span{padding:5px 12px;border-radius:6px;background:var(--paper);border:2px solid var(--line);
  font-size:12.5px;font-weight:700;font-family:Consolas,monospace}
.lb-bench{position:relative}
.lb-bench::before{content:"LAB BENCH";position:absolute;top:-26px;right:8px;font-family:Consolas,monospace;
  font-size:11px;color:#a7adb8;letter-spacing:.2em}
.lb-phonewrap{position:relative;width:min(330px,86%);margin:0 auto}
.lb-phone{background:var(--paper);border:2.5px solid var(--ink);border-radius:30px;padding:22px 12px 12px;
  box-shadow:9px 9px 0 rgba(0,0,0,.14)}
.lb-phone::before{content:"";display:block;width:70px;height:8px;background:var(--ink);border-radius:6px;margin:0 auto 10px}
.lb-phone img{width:100%;aspect-ratio:9/17.4;object-fit:cover;border:2px solid var(--line);border-radius:8px}
.lb-sticky{position:absolute;z-index:3;background:var(--p);color:var(--ptext);border:2px solid var(--ink);
  border-radius:4px;padding:8px 11px;font-size:12px;font-weight:800;box-shadow:3px 3px 0 rgba(0,0,0,.25);font-family:Consolas,monospace}
.lb-sticky.a{top:-8px;left:-14px;transform:rotate(-4deg)}
.lb-sticky.b{bottom:14px;right:-12px;transform:rotate(3deg);background:var(--pk);color:#fff}
/* lab notes features */
.lb-notes{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.lb-note{background:var(--paper);border:2px solid var(--ink);border-radius:4px;padding:24px 26px;
  position:relative;display:grid;grid-template-columns:52px 1fr;gap:16px;
  background-image:linear-gradient(var(--line) 1.5px,transparent 1.5px);background-size:100% 34px}
.lb-note:nth-child(1),.lb-note:nth-child(4){background-color:var(--soft)}
.lb-note .exp{width:48px;height:48px;border:2px solid var(--ink);border-radius:50%;display:grid;place-items:center;
  font-family:Consolas,monospace;font-weight:700;font-size:12px;background:var(--paper);grid-row:span 2}
.lb-note h3{font-size:18px;font-weight:900}
.lb-note p{font-size:14px;color:#555f74;margin-top:6px}
/* polaroid shots */
.lb-polawrap{overflow:hidden}
.lb-polar{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;grid-template-rows:1fr 1fr;gap:18px}
.lb-pola{background:var(--paper);border:2px solid var(--ink);padding:12px 12px 38px;position:relative;
  box-shadow:5px 5px 0 var(--soft2)}
.lb-pola.big{grid-row:span 2}
.lb-pola:nth-child(2){transform:rotate(2deg)}
.lb-pola:nth-child(3){transform:rotate(-2.2deg)}
.lb-pola:nth-child(4){transform:rotate(1.5deg)}
.lb-pola:nth-child(5){transform:rotate(-1.6deg);grid-column:span 3}
.lb-pola img{width:100%;height:100%;object-fit:cover;border:1.5px solid var(--line)}
.lb-pola.big img{aspect-ratio:9/17}
.lb-pola:not(.big) img{aspect-ratio:9/10.5}
.lb-pola span.cap{position:absolute;bottom:8px;left:0;right:0;text-align:center;
  font-family:"Kaiti SC",KaiTi,serif;font-size:13px;font-weight:700;color:#4a4f5c}
.lb-rail{display:none}
/* specimen steps */
.lb-specs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.lb-spec{background:var(--paper);border:2px solid var(--ink);border-radius:0 0 18px 18px;padding:0 20px 22px}
.lb-spec .pin{width:14px;height:14px;border-radius:50%;background:var(--pk);border:2px solid var(--ink);margin:-8px auto 12px}
.lb-spec .code{font-family:Consolas,monospace;font-size:11.5px;color:var(--pd);font-weight:700}
.lb-spec h3{font-size:16.5px;font-weight:900;margin:6px 0 8px}
.lb-spec p{font-size:13.3px;color:#555f74}
/* report compare */
.lb-report{background:var(--paper);border:2px solid var(--ink);border-radius:6px;overflow-x:auto;
  box-shadow:7px 7px 0 rgba(0,0,0,.13)}
.lb-reportbar{background:var(--ink);color:#fff;padding:10px 18px;font-family:Consolas,monospace;font-size:12.5px;
  letter-spacing:.12em;display:flex;justify-content:space-between}
table.lb-tab{border-collapse:collapse;width:100%;min-width:720px}
.lb-tab th,.lb-tab td{border:1.5px solid var(--line);padding:13px 15px;font-size:13.8px;text-align:center}
.lb-tab th{background:var(--soft2);font-weight:800}
.lb-tab th:first-child,.lb-tab td:first-child{text-align:left;font-weight:700}
.lb-tab td.win{background:var(--soft);font-weight:800}
.lb-stamp{display:inline-block;border:2px solid var(--pk);color:var(--pk);border-radius:6px;
  font-family:Consolas,monospace;font-size:11px;font-weight:700;padding:2px 8px;transform:rotate(-8deg)}
/* drawer faq */
.lb-drawers{max-width:900px;margin:0 auto;border:2px solid var(--ink);border-radius:12px;overflow:hidden}
.lb-draw{border-bottom:2px solid var(--ink)}
.lb-draw:last-child{border-bottom:0}
.lb-drawhead{width:100%;display:flex;align-items:center;gap:14px;padding:18px 22px;text-align:left;
  font-weight:800;font-size:15.5px;background:var(--paper)}
.lb-draw:nth-child(even) .lb-drawhead{background:var(--soft)}
.lb-drawhead .handle{margin-left:auto;width:44px;height:18px;border:2px solid var(--ink);border-radius:8px;position:relative;flex:0 0 44px}
.lb-drawhead .handle::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:4px;background:var(--ink);
  transform:translate(-50%,-50%)}
.lb-draw.open .handle::after{transform:translate(-50%,-50%) rotate(90deg)}
.lb-drawbody{display:none;padding:0 22px 20px;color:#555f74;font-size:14.5px;border-top:1.5px dashed var(--line);padding-top:16px;margin:0 22px 20px 0}
.lb-draw.open .lb-drawbody{display:block}
/* pinned specimen reviews */
.lb-board{background:var(--soft2);border:2px solid var(--ink);border-radius:10px;padding:34px 26px;
  display:grid;grid-template-columns:1fr 1fr;gap:22px}
.lb-card{background:var(--paper);border:1.5px solid var(--ink);border-radius:4px;padding:20px 22px;position:relative}
.lb-card::before{content:"";position:absolute;top:-7px;left:30px;width:16px;height:16px;border-radius:50%;
  background:var(--pk);border:2px solid var(--ink)}
.lb-card .stars{color:var(--p);letter-spacing:2px;font-size:13px}
.lb-card p.txt{font-size:14px;color:#3c4458;margin:8px 0 12px}
.lb-card footer{font-family:Consolas,monospace;font-size:12px;color:#7a8194;border-top:1.5px dashed var(--line);padding-top:9px}
/* dish download */
.lb-dishwrap{background:var(--ink);border-radius:16px;padding:20px;display:grid;grid-template-columns:1fr 260px;gap:20px}
.lb-dishl{background:var(--paper);border-radius:10px;padding:46px 44px}
.lb-dishl h2{font-size:clamp(25px,3.1vw,36px);font-weight:900;margin:10px 0 12px}
.lb-dishl p.lead{color:#555f74;font-size:15px;max-width:500px}
.lb-dishl .upd{margin-top:14px;font-family:Consolas,monospace;font-size:12px;color:#8a93a6}
.lb-dishl .btn{margin-top:22px;font-size:16px;padding:15px 32px}
.lb-dishr{border-radius:50%;aspect-ratio:1/1;margin:0 auto;background:var(--p);color:var(--ptext);
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:7px;
  border:3px solid rgba(255,255,255,.7);width:min(240px,100%)}
.lb-dishr img{width:78px;height:78px;border-radius:50%;border:2.5px solid #fff;object-fit:cover}
.lb-dishr strong{font-size:19px;font-weight:900}
.lb-dishr span{font-size:12px;font-weight:700;padding:0 26px}
/* footer */
.lb-foot{background:#1c1e24;color:#c6cad6;margin-top:84px;padding:58px 0 26px}
.lb-fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.lb-fbrand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff;font-weight:900;font-size:17px}
.lb-fbrand img{width:36px;height:36px;border-radius:50%;object-fit:cover;border:2px solid #3a3e49}
.lb-foot h4{color:#fff;font-size:14px;margin-bottom:12px}
.lb-foot li{margin-bottom:9px;font-size:13.5px}
.lb-foot a:hover{color:var(--p)}
.lb-fbottom{border-top:1px solid #30333b;margin-top:38px;padding-top:20px;font-size:12.5px;color:#828694;text-align:center}
#backTop{position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:50%;background:var(--pk);
  color:#fff;border:2px solid var(--ink);display:grid;place-items:center;font-size:20px;font-weight:900;
  z-index:900;opacity:0;pointer-events:none;transform:translateY(12px);transition:.25s}
#backTop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
@media(max-width:980px){
  .lb-heroin{grid-template-columns:1fr;gap:44px}
  .lb-polar{grid-template-columns:1fr 1fr 1fr}
  .lb-pola.big{grid-row:auto}
  .lb-specs{grid-template-columns:1fr 1fr}
  .lb-dishwrap{grid-template-columns:1fr}
  .lb-fgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .lb-nav{position:fixed;inset:var(--hdr) 0 auto 0;background:var(--paper);border-bottom:2.5px solid var(--ink);display:none}
  body.menu-open .lb-nav{display:block}
  .lb-nav ul{flex-direction:column;padding:10px 16px}
  .lb-nav a{padding:13px 10px;border-bottom:1px dashed var(--line)}
  .lb-cta.hd{display:none}
  .lb-tools{display:flex}
  .lb-notes{grid-template-columns:1fr}
  /* 截图区移动端单行横滑 */
  .lb-polawrap{overflow-x:auto;padding:6px 2px 16px}
  .lb-polar{display:flex;gap:16px;width:max-content;grid-template-columns:none}
  .lb-pola{flex:0 0 62%;grid-row:auto!important;grid-column:auto!important}
  .lb-pola img{aspect-ratio:9/16!important;height:auto}
  .lb-rail{display:block;text-align:center;color:#8a93a6;font-size:12.5px;margin:-22px 0 22px}
  .lb-specs,.lb-board{grid-template-columns:1fr}
  .lb-pola:nth-child(5){grid-column:auto}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important;transition:none!important}
}