:root{
      --bg:#07110f;
      --bg-soft:#0b1916;
      --panel:#10231f;
      --panel-2:#142d27;
      --line:rgba(255,255,255,.11);
      --text:#f4f8f6;
      --muted:#aabcb6;
      --green:#20a565;
      --green-2:#009b74;
      --green-soft:#c9f2df;
      --cyan:#4fd1c5;
      --blue:#4ea5ff;
      --amber:#ffca63;
      --danger:#ff8585;
      --radius:20px;
      --shadow:0 20px 60px rgba(0,0,0,.28);
      --container:1400px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 82% 8%, rgba(32,165,101,.13), transparent 28%),
        radial-gradient(circle at 15% 30%, rgba(78,165,255,.07), transparent 30%),
        var(--bg);
      line-height:1.65;
    }
    a{color:inherit;text-decoration:none}
    button,input,select{font:inherit}
    .container{width:min(calc(100% - 40px),var(--container));margin:auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(7,17,15,.86);
      border-bottom:1px solid var(--line);
    }
    .nav{height:72px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;margin-right:auto;font-weight:800;letter-spacing:.02em}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--green),var(--green-2));display:grid;place-items:center;box-shadow:0 0 28px rgba(32,165,101,.3)}
    .brand-mark svg{width:22px;height:22px}
    .nav-links{display:flex;align-items:center;gap:4px;overflow:auto;scrollbar-width:none}
    .nav-links::-webkit-scrollbar{display:none}
    .nav-links a{white-space:nowrap;padding:9px 11px;border-radius:10px;color:var(--muted);font-size:14px}
    .nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
    .nav-actions{display:flex;gap:10px}
    .btn{border:1px solid var(--line);background:rgba(255,255,255,.04);color:#fff;padding:11px 16px;border-radius:12px;cursor:pointer;transition:.2s;display:inline-flex;align-items:center;gap:8px;justify-content:center}
    .btn:hover{transform:translateY(-1px);border-color:rgba(255,255,255,.24)}
    .btn-primary{background:linear-gradient(135deg,var(--green),var(--green-2));border-color:transparent;font-weight:700;box-shadow:0 10px 30px rgba(0,155,116,.2)}
    .btn-small{padding:8px 12px;font-size:13px}
    .hero{padding:76px 0 34px}
    .hero-shell{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:30px;min-height:520px;background:linear-gradient(115deg,rgba(15,39,33,.98),rgba(7,17,15,.92));box-shadow:var(--shadow)}
    .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;min-height:520px}
    .hero-copy{padding:64px;display:flex;flex-direction:column;justify-content:center;position:relative;z-index:2}
    .eyebrow{color:var(--cyan);font-size:13px;letter-spacing:.16em;text-transform:uppercase;font-weight:800}
    h1{font-size:clamp(42px,5vw,76px);line-height:1.02;margin:18px 0 20px;letter-spacing:-.05em;max-width:850px}
    .hero-copy p{font-size:18px;color:var(--muted);max-width:710px;margin:0 0 28px}
    .hero-meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .meta-pill{border:1px solid var(--line);background:rgba(255,255,255,.04);padding:8px 12px;border-radius:999px;font-size:13px;color:#d7e5e0}
    .hero-visual{position:relative;min-height:420px;background:
      linear-gradient(145deg,rgba(32,165,101,.18),transparent 48%),
      radial-gradient(circle at 64% 46%,rgba(78,165,255,.22),transparent 32%)}
    .network-map{position:absolute;inset:38px;display:grid;place-items:center}
    .controller{position:relative;width:min(420px,84%);aspect-ratio:1.35;border:1px solid rgba(255,255,255,.23);border-radius:28px;background:linear-gradient(145deg,#149bc6,#006f95 60%,#0e2530);transform:rotate(-7deg);box-shadow:0 35px 70px rgba(0,0,0,.45);padding:26px}
    .controller::before{content:"TPK CONTROL";font-weight:900;font-size:28px;letter-spacing:.04em;position:absolute;left:34px;top:34px;color:rgba(255,255,255,.8)}
    .controller::after{content:"DMX · DALI · ART-NET · sACN";position:absolute;left:34px;bottom:34px;color:rgba(255,255,255,.72);font-size:13px;letter-spacing:.08em}
    .port-row{position:absolute;right:26px;top:28px;display:grid;grid-template-columns:repeat(3,52px);gap:9px}
    .port{height:52px;border:1px solid rgba(255,255,255,.25);border-radius:10px;background:rgba(0,0,0,.14);display:grid;place-items:center;font-size:10px}
    .map-line{position:absolute;height:1px;background:linear-gradient(90deg,transparent,var(--green),transparent);opacity:.8}
    .map-line.one{width:74%;top:22%;right:-4%;transform:rotate(16deg)}
    .map-line.two{width:66%;bottom:18%;left:-5%;transform:rotate(-20deg)}
    section{padding:38px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}
    .section-kicker{font-size:12px;letter-spacing:.16em;color:var(--cyan);font-weight:800;text-transform:uppercase}
    h2{font-size:clamp(30px,3vw,48px);letter-spacing:-.035em;line-height:1.15;margin:8px 0 0}
    .section-desc{max-width:640px;color:var(--muted);margin:0}
    .grid{display:grid;gap:18px}
    .type-grid{grid-template-columns:repeat(4,1fr)}
    .card{background:linear-gradient(160deg,rgba(20,45,39,.95),rgba(11,25,22,.96));border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 12px 30px rgba(0,0,0,.12);transition:.2s}
    .card:hover{transform:translateY(-3px);border-color:rgba(79,209,197,.32)}
    .card-icon{width:48px;height:48px;border-radius:14px;background:rgba(32,165,101,.15);color:var(--green-soft);display:grid;place-items:center;margin-bottom:28px}
    .card-icon svg{width:24px;height:24px}
    .card h3{font-size:21px;margin:0 0 8px}
    .card p{color:var(--muted);margin:0 0 18px;font-size:14px}
    .tag-row{display:flex;gap:7px;flex-wrap:wrap}
    .tag{font-size:12px;padding:5px 8px;border-radius:8px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:#dce8e4}
    .rules-shell{display:grid;grid-template-columns:290px 1fr;gap:18px}
    .rules-nav{position:sticky;top:92px;align-self:start}
    .scale-btn{width:100%;text-align:left;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--muted);padding:16px 8px;cursor:pointer;display:flex;justify-content:space-between;gap:10px}
    .scale-btn.active{color:#fff}
    .scale-btn.active span:last-child{color:var(--green-soft)}
    .rule-panel{display:none}
    .rule-panel.active{display:block}
    .rule-table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border:1px solid var(--line);border-radius:18px}
    .rule-table th,.rule-table td{padding:18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    .rule-table th{color:#e8f2ef;background:rgba(255,255,255,.035);font-size:13px}
    .rule-table td{color:var(--muted)}
    .rule-table tr:last-child td{border-bottom:0}
    .recommend{display:inline-flex;align-items:center;gap:7px;color:#d7ffeb;font-weight:700}
    .recommend::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green)}
    .notice{margin-top:14px;border:1px solid rgba(255,202,99,.25);background:rgba(255,202,99,.07);padding:14px 16px;border-radius:14px;color:#f5dfaa;font-size:13px}
    .case-grid{grid-template-columns:repeat(3,1fr)}
    .case-card{padding:0;overflow:hidden}
    .case-media{height:220px;position:relative;background:linear-gradient(145deg,#11312a,#0b1715)}
    .case-media.bridge{background:radial-gradient(circle at 30% 45%,rgba(36,180,255,.8),transparent 4%),linear-gradient(150deg,#08131b,#102a3d 65%,#061118)}
    .case-media.facade{background:linear-gradient(135deg,#06110f,#1b3b31);}
    .case-media.carwash{background:linear-gradient(145deg,#131629,#0d2431)}
    .case-lines{position:absolute;inset:25px;border:1px solid rgba(255,255,255,.08);border-radius:14px;overflow:hidden}
    .case-lines::before,.case-lines::after{content:"";position:absolute;inset:auto 0;height:3px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);box-shadow:0 0 20px rgba(79,209,197,.9)}
    .case-lines::before{top:42%}.case-lines::after{top:67%}
    .case-content{padding:22px}
    .case-content h3{margin:0 0 7px}
    .case-content p{margin:0 0 15px;color:var(--muted);font-size:14px}
    .text-link{color:var(--green-soft);font-weight:700;font-size:14px}
    .quote-shell{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(340px,.95fr);gap:18px;align-items:start}
    .form-card,.result-card{padding:28px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    label{display:block;color:#d8e5e1;font-size:13px;margin-bottom:7px;font-weight:700}
    .field{width:100%;border:1px solid var(--line);background:#091613;color:#fff;border-radius:12px;padding:13px 14px;outline:none}
    .field:focus{border-color:var(--green)}
    .field-help{font-size:11px;color:#829891;margin-top:5px}
    .full{grid-column:1/-1}
    .form-actions{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
    .result-card{position:sticky;top:92px;background:linear-gradient(155deg,#123c30,#0b1c18);border-color:rgba(32,165,101,.35)}
    .result-top{display:flex;justify-content:space-between;gap:12px;align-items:start;padding-bottom:18px;border-bottom:1px solid var(--line)}
    .result-code{font-size:12px;color:var(--cyan);font-weight:800;letter-spacing:.12em}
    .result-name{font-size:27px;line-height:1.15;margin:7px 0 0}
    .status-badge{border:1px solid rgba(32,165,101,.35);background:rgba(32,165,101,.12);color:#d6ffeb;padding:7px 10px;border-radius:999px;font-size:12px;white-space:nowrap}
    .bom{margin-top:16px}
    .bom-row{display:grid;grid-template-columns:1fr auto;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.1)}
    .bom-row span:first-child{color:var(--muted)}
    .bom-row strong{font-size:16px}
    .formula{margin-top:16px;padding:14px;border-radius:14px;background:rgba(0,0,0,.18);font-size:12px;color:#bcd0ca}
    .template-actions{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
    .resource-grid{grid-template-columns:repeat(4,1fr)}
    .resource-card{display:flex;flex-direction:column;min-height:220px}
    .resource-type{font-size:11px;letter-spacing:.14em;color:var(--cyan);font-weight:800}
    .resource-card h3{margin:14px 0 8px}
    .resource-card p{color:var(--muted);font-size:13px;margin:0 0 16px}
    .resource-card .btn{margin-top:auto;width:max-content}
    .video-tools{display:flex;gap:12px;margin-bottom:16px}
    .search-wrap{flex:1;position:relative}
    .search-wrap input{padding-left:42px}
    .search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}
    .video-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .video-item{display:grid;grid-template-columns:136px 1fr;gap:16px;padding:14px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.025)}
    .video-thumb{border-radius:12px;background:linear-gradient(145deg,#17352e,#0b1b17);display:grid;place-items:center;min-height:86px;border:1px solid var(--line)}
    .play{width:42px;height:42px;border-radius:50%;background:rgba(32,165,101,.2);display:grid;place-items:center;color:#fff}
    .video-item h3{font-size:16px;margin:2px 0 4px}
    .video-item p{font-size:12px;color:var(--muted);margin:0 0 8px}
    .video-meta{font-size:11px;color:#8fa79f}
    .software-grid{grid-template-columns:repeat(3,1fr)}
    .software-card{position:relative;overflow:hidden}
    .software-card::after{content:"";position:absolute;width:130px;height:130px;border-radius:50%;background:rgba(32,165,101,.1);right:-44px;top:-44px}
    .software-brand{font-size:12px;color:var(--cyan);letter-spacing:.12em;font-weight:800}
    .software-card h3{font-size:24px;margin:14px 0 7px}
    .steps{margin:16px 0 0;padding:0;list-style:none;counter-reset:step}
    .steps li{counter-increment:step;display:flex;gap:10px;color:var(--muted);font-size:13px;margin:10px 0}
    .steps li::before{content:counter(step);width:22px;height:22px;border-radius:50%;background:rgba(32,165,101,.16);color:#d8ffeb;display:grid;place-items:center;flex:0 0 auto;font-size:11px;font-weight:800}
    .appendix-grid{grid-template-columns:repeat(4,1fr)}
    .asset-card{padding:0;overflow:hidden}
    .asset-preview{height:160px;background:linear-gradient(135deg,#0f2621,#07100e);position:relative}
    .asset-preview::before{content:"";position:absolute;inset:22px;border:1px dashed rgba(255,255,255,.25);border-radius:8px}
    .asset-preview::after{content:"DIMENSION / HD PNG";position:absolute;inset:0;display:grid;place-items:center;font-size:11px;letter-spacing:.12em;color:#b9cec7}
    .asset-content{padding:18px}
    .asset-content h3{font-size:16px;margin:0 0 6px}
    .asset-content p{font-size:12px;color:var(--muted);margin:0 0 12px}
    footer{padding:50px 0 38px;color:#82958f}
    .footer-line{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;gap:20px;font-size:12px}
    .mobile-only{display:none}
    @media (max-width:1100px){
      .nav-links{display:none}.hero-grid{grid-template-columns:1fr}.hero-visual{min-height:360px}.type-grid,.resource-grid,.appendix-grid{grid-template-columns:repeat(2,1fr)}.case-grid,.software-grid{grid-template-columns:1fr}.quote-shell{grid-template-columns:1fr}.result-card{position:static}.rules-shell{grid-template-columns:1fr}.rules-nav{position:static;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.scale-btn{border:1px solid var(--line);border-radius:10px;padding:11px}.video-list{grid-template-columns:1fr}
    }
    @media (max-width:720px){
      .container{width:min(calc(100% - 24px),var(--container))}.nav{height:64px}.brand span:last-child{display:none}.nav-actions .btn:not(.btn-primary){display:none}.hero{padding-top:28px}.hero-copy{padding:34px 24px}.hero-shell{border-radius:22px}.hero-visual{min-height:300px}.controller{width:82%;padding:18px}.controller::before{font-size:20px;left:22px;top:22px}.controller::after{left:22px;bottom:22px;font-size:9px}.port-row{grid-template-columns:repeat(3,36px);right:15px;top:16px}.port{width:36px;height:36px}.section-head{display:block}.section-desc{margin-top:12px}.type-grid,.resource-grid,.appendix-grid{grid-template-columns:1fr}.rules-nav{grid-template-columns:1fr 1fr}.rule-table{display:block;overflow:auto}.form-grid{grid-template-columns:1fr}.full{grid-column:auto}.video-item{grid-template-columns:90px 1fr}.footer-line{display:block}.mobile-only{display:inline-flex}
    }
    @media print{
      .topbar,.nav-actions,.form-actions,.template-actions,.video-tools{display:none!important}
      body{background:#fff;color:#111}.card,.hero-shell,.result-card{box-shadow:none;background:#fff;color:#111;border:1px solid #ddd}.hero-copy p,.section-desc,.card p,.rule-table td,.video-item p,.asset-content p,.result-card span,.result-card .formula{color:#555}.hero-visual{display:none}.hero-grid{grid-template-columns:1fr}.hero-shell{min-height:auto}.hero-copy{padding:40px}.container{width:96%}
    }