:root{
  --navy:#123d5a;
  --navy2:#0d2f47;
  --bg:#f4f7fa;
  --card:#ffffff;
  --text:#17212b;
  --muted:#708090;
  --border:#e2e8ef;
  --accent:#176b91;
  --shadow:0 8px 24px rgba(20,45,65,.07);
  --radius:14px;
}
*{box-sizing:border-box}
html{font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--text)}
body{margin:0;background:var(--bg)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.topbar{background:linear-gradient(135deg,var(--navy2),var(--navy));color:#fff;box-shadow:0 2px 12px rgba(0,0,0,.12)}
.topbar-inner{max-width:1380px;margin:auto;padding:0 24px;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
.brand:hover{text-decoration:none}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;background:#fff;color:var(--navy);border-radius:10px;padding:7px 10px;font-size:15px}
nav{display:flex;gap:6px;flex-wrap:wrap}
nav a{color:#eaf5fb;padding:10px 13px;border-radius:9px}
nav a:hover{background:rgba(255,255,255,.1);text-decoration:none}
.container{max-width:1380px;margin:0 auto;padding:34px 24px 60px}
.page-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}
.page-heading h1{margin:0 0 7px;font-size:30px}
.page-heading p{margin:0;color:var(--muted)}
.back{font-size:13px;color:var(--muted);display:inline-block;margin-bottom:8px}
.stats{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px;margin-bottom:24px}
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:19px 18px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.stat:before{content:"";position:absolute;right:0;top:0;bottom:0;width:4px;background:#aebbc7}
.stat span{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}
.stat strong{font-size:28px}
.stat.main:before{background:#176b91}.stat.good:before{background:#32845c}.stat.upgrade:before{background:#c3952b}
.stat.maintenance:before{background:#c66c31}.stat.replace:before{background:#9b5e9e}.stat.dead:before{background:#b54646}
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:22px}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.panel-head h2{margin:0 0 5px;font-size:20px}
.panel-head p{margin:0;color:var(--muted);font-size:13px}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;min-width:1100px}
th{background:#eef4f7;color:#334b5a;font-size:13px;font-weight:700;text-align:right;padding:13px 12px;border-bottom:1px solid var(--border);white-space:nowrap}
td{padding:14px 12px;border-bottom:1px solid #edf1f4;vertical-align:middle;font-size:13px}
tbody tr:hover{background:#f8fbfc}
.sub{display:block;color:var(--muted);font-size:11px;margin-top:4px}
.compact{max-width:250px;white-space:normal;line-height:1.5}
.inventory-link{font-weight:700}
.status{display:inline-flex;align-items:center;justify-content:center;background:#edf4f7;color:#244b5e;border:1px solid #d9e7ed;border-radius:999px;padding:5px 10px;white-space:nowrap;font-size:12px}
.status.large{font-size:14px;padding:8px 15px}
.empty{text-align:center;color:var(--muted);padding:30px}
.btn{border:1px solid var(--border);background:#fff;color:var(--navy);padding:10px 15px;border-radius:9px;font-weight:700;cursor:pointer;display:inline-block}
.btn:hover{text-decoration:none;background:#f6f9fb}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.primary:hover{background:var(--navy2)}
.btn.full{width:100%}
.filters{display:grid;grid-template-columns:1fr 220px auto;gap:12px;padding:16px}
input,select,textarea{width:100%;border:1px solid #ced8df;background:#fff;border-radius:9px;padding:11px 12px;font:inherit;color:var(--text);outline:none}
input:focus,select:focus,textarea:focus{border-color:#6aa2bb;box-shadow:0 0 0 3px rgba(23,107,145,.09)}
textarea{resize:vertical}
.two-col{display:grid;grid-template-columns:minmax(320px,.8fr) minmax(420px,1.2fr);gap:22px;align-items:start}
.form{display:grid;gap:15px}
.form label{display:grid;gap:7px;font-size:13px;font-weight:700;color:#354a57}
.summary-list{display:grid;gap:0}
.summary-list>div{display:grid;grid-template-columns:160px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid #edf1f4}
.summary-list>div:last-child{border-bottom:0}
.summary-list span{color:var(--muted);font-size:13px}
.summary-list b{font-size:13px;line-height:1.6}
.spec-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.spec{border:1px solid var(--border);background:#fafcfd;border-radius:11px;padding:14px;min-height:76px}
.spec.wide{grid-column:span 2}
.spec span{display:block;color:var(--muted);font-size:11px;margin-bottom:8px}
.spec b{font-size:13px;line-height:1.55;word-break:break-word}
.alert{padding:12px 15px;border-radius:9px;margin-bottom:18px;border:1px solid}
.alert.success{background:#edf8f1;color:#246441;border-color:#cce8d6}
.alert.error{background:#fff1f1;color:#8e3535;border-color:#f0cccc}
@media(max-width:1100px){
  .stats{grid-template-columns:repeat(3,1fr)}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
}
@media(max-width:700px){
  .topbar-inner{align-items:flex-start;flex-direction:column;padding:14px 16px}
  .container{padding:22px 14px 45px}
  .page-heading{align-items:flex-start;flex-direction:column}
  .stats{grid-template-columns:repeat(2,1fr)}
  .filters{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:1fr}
  .spec.wide{grid-column:span 1}
  .summary-list>div{grid-template-columns:1fr;gap:4px}
}