:root{--bg:#020914;--panel:#071522;--line:rgba(75,157,211,.25);--cyan:#55c9ff;--text:#eef8ff;--muted:#93adbe}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 50% 0,#0b2135 0,transparent 32%),var(--bg);color:var(--text);font:15px/1.6 Inter,system-ui,sans-serif}.lab-header{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;padding:14px max(22px,calc((100vw - 1280px)/2));border-bottom:1px solid var(--line);background:rgba(2,9,20,.88);backdrop-filter:blur(18px)}.lab-header img{width:240px;display:block}.lab-header nav{display:flex;gap:20px}.lab-header a{color:#cce4f2;text-decoration:none;font-weight:800}.lab-shell{width:min(1280px,calc(100% - 36px));margin:auto}.lab-hero{padding:84px 0 54px;text-align:center}.lab-hero>span,.lab-head span,.lab-final span{color:var(--cyan);font-size:11px;font-weight:900;letter-spacing:.18em}.lab-hero h1{font-size:clamp(38px,6vw,74px);line-height:1.02;margin:14px 0}.lab-hero em{font-style:normal;color:var(--cyan)}.lab-hero p{max-width:780px;margin:0 auto;color:var(--muted)}.lab-jumps{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:28px}.lab-jumps a,.lab-final a{padding:12px 18px;border:1px solid #218acb;border-radius:14px;background:#0b70b8;color:#fff;text-decoration:none;font-weight:900}.lab-section{padding:50px 0;border-top:1px solid rgba(68,136,180,.14)}.lab-head{margin-bottom:22px}.lab-head h2{font-size:clamp(28px,4vw,44px);margin:7px 0}.wizard-grid,.blind-grid,.rack-grid{display:grid;grid-template-columns:.85fr 1.35fr;gap:18px}.lab-card{border:1px solid var(--line);border-radius:24px;background:linear-gradient(145deg,rgba(8,27,43,.94),rgba(3,13,24,.96));box-shadow:0 22px 60px rgba(0,0,0,.22)}.lab-form{padding:22px;display:grid;gap:16px}.lab-form label,.blind-tools label{display:grid;gap:7px;color:#bdd1de;font-weight:800}.lab-form input,.lab-form select,.blind-tools select{width:100%;padding:12px;border:1px solid rgba(80,153,202,.28);border-radius:12px;background:#04111d;color:#fff}.lab-two{display:grid;grid-template-columns:1fr 1fr;gap:12px}.lab-form fieldset{display:flex;flex-wrap:wrap;gap:12px;border:1px solid var(--line);border-radius:16px;padding:14px}.lab-form fieldset label{display:flex;align-items:center;gap:6px}.lab-form fieldset input{width:auto}.lab-form button,.blind-tools button{border:0;border-radius:13px;padding:13px;background:linear-gradient(135deg,#0877c4,#20aef5);color:#fff;font-weight:900;cursor:pointer}.survey-result{padding:24px;display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:center}.building-preview{position:relative;height:310px;border-radius:20px;overflow:hidden;background:linear-gradient(#0a2740 0 58%,#071522 58%);border:1px solid var(--line)}.floor{position:absolute;left:15%;width:70%;height:25%;border:2px solid #2a7dad;background:rgba(8,38,59,.9)}.f1{bottom:10%}.f2{bottom:35%}.f3{bottom:60%}.pin{position:absolute;padding:5px 8px;border-radius:999px;background:#42c8ff;color:#02101b;font-size:9px;font-style:normal;font-weight:900;box-shadow:0 0 22px #42c8ff}.p1{left:18%;bottom:13%}.p2{right:20%;bottom:40%}.p3{left:46%;bottom:67%}.survey-result ul{padding-left:18px;color:#c8dce8}.blind-tools{padding:22px;display:grid;align-content:start;gap:14px}.blind-tools .ghost,.lab-final .ghost{background:transparent;border:1px solid var(--line)}.blind-tools p{color:var(--muted)}.blind-stage{position:relative;min-height:480px;overflow:hidden;background:linear-gradient(90deg,transparent 49.7%,rgba(77,145,187,.16) 50%,transparent 50.3%),linear-gradient(transparent 49.7%,rgba(77,145,187,.16) 50%,transparent 50.3%),#06131f;background-size:90px 90px}.blind-zone{position:absolute;padding:8px 12px;border:1px dashed rgba(117,192,235,.32);border-radius:12px;color:#668da5;font-size:10px}.z1{left:4%;bottom:4%}.z2{right:4%;top:4%}.blind-warning{position:absolute;right:7%;bottom:7%;padding:8px 12px;border:1px solid rgba(255,91,91,.3);border-radius:12px;background:rgba(120,18,18,.18);color:#ff8d8d;font-size:10px;font-weight:900}.cam-node{position:absolute;width:42px;height:42px;border-radius:14px;background:#eaf8ff;color:#062034;display:grid;place-items:center;font-weight:900;cursor:grab;z-index:3;box-shadow:0 8px 25px rgba(0,0,0,.3)}.cam-node:after{content:"";position:absolute;left:34px;top:8px;width:var(--cone,180px);height:90px;clip-path:polygon(0 45%,100% 0,100% 100%);background:linear-gradient(90deg,rgba(55,192,255,.28),rgba(55,192,255,.03));pointer-events:none}.rack-cabinet{padding:20px;max-width:620px;width:100%;justify-self:center}.rack-title{display:flex;justify-content:space-between;margin-bottom:14px}.rack-title span{color:var(--cyan)}.rack-units{display:grid;gap:7px;padding:14px;border:8px solid #0d2639;border-radius:14px;background:#02070d}.rack-unit{display:flex;justify-content:space-between;align-items:center;min-height:42px;padding:8px 13px;border:1px solid #245b7d;border-radius:7px;background:linear-gradient(#102b3d,#071722)}.rack-unit strong{font-size:12px}.rack-unit span{font-size:10px;color:#82abc2}.lab-final{margin:50px 0 80px;padding:30px;border:1px solid var(--line);border-radius:26px;background:linear-gradient(135deg,#09233a,#06131f);display:flex;justify-content:space-between;gap:30px;align-items:center}.lab-final h2{margin:6px 0}.lab-final p{margin:0;color:var(--muted)}.lab-final>div:last-child{display:flex;gap:10px;flex-wrap:wrap}@media(max-width:850px){.wizard-grid,.blind-grid,.rack-grid,.survey-result{grid-template-columns:1fr}.lab-header nav{display:none}.lab-header img{width:200px}.blind-stage{min-height:380px}.lab-final{align-items:flex-start;flex-direction:column}}@media(max-width:520px){.lab-shell{width:min(100% - 24px,1280px)}.lab-hero{padding-top:55px}.lab-two{grid-template-columns:1fr}.building-preview{height:240px}.blind-stage{min-height:320px}.lab-card{border-radius:19px}}