:root{
  --bg:#071018; --panel:#0c1822; --panel2:#101f2c; --line:#213543;
  --text:#e8f0f5; --muted:#8ea5b4; --accent:#49c5a6; --accent2:#70d6bd;
  --danger:#ef6d6d; --shadow:0 18px 60px rgba(0,0,0,.25);
}
*{box-sizing:border-box} body{margin:0;background:radial-gradient(circle at 80% 0,#102c37 0,#071018 42%);color:var(--text);font:14px/1.5 Inter,system-ui,-apple-system,Segoe UI,sans-serif;min-height:100vh}
.topbar{height:76px;border-bottom:1px solid var(--line);background:rgba(5,13,19,.82);backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:space-between;padding:0 5vw;position:sticky;top:0;z-index:10}
.eyebrow{font-size:10px;letter-spacing:.18em;color:var(--accent);font-weight:800}.topbar h1{font-size:18px;margin:1px 0 0}
nav{display:flex;gap:5px}.nav-btn,.ghost,.primary,.danger{border:1px solid var(--line);background:transparent;color:var(--text);padding:9px 14px;border-radius:8px;cursor:pointer;font-weight:700}.nav-btn.active{background:var(--panel2);border-color:#315161;color:var(--accent2)}
.primary{background:var(--accent);color:#04110e;border-color:var(--accent)}.primary:hover{background:var(--accent2)}
.ghost:hover{border-color:#477080;background:#0d202b}.danger{color:#ff9a9a;border-color:#613c42}.danger:hover{background:#28171b}
.shell{max-width:1200px;margin:0 auto;padding:38px 22px 50px}.page{display:none}.page.active{display:block}
.hero{display:flex;justify-content:space-between;gap:30px;align-items:flex-end;margin-bottom:25px}.hero.compact{display:block}.hero h2{font-size:34px;line-height:1.08;max-width:760px;margin:10px 0}.hero p{color:var(--muted);max-width:720px;margin:0}.badge{display:inline-block;color:var(--accent2);background:#0b2a29;border:1px solid #174e49;border-radius:999px;padding:4px 9px;font-size:11px;font-weight:800}.hero-stat{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 22px;min-width:125px}.hero-stat span{display:block;color:var(--muted);font-size:11px}.hero-stat strong{font-size:28px}
.grid{display:grid;grid-template-columns:1.45fr .75fr;gap:16px}.card{background:linear-gradient(180deg,rgba(16,31,44,.92),rgba(10,22,31,.92));border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:20px;margin-bottom:16px}.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:16px}.card h3{margin:0;font-size:16px}.card p{margin:4px 0 0;color:var(--muted);font-size:12px}.card code{color:var(--accent2)}
textarea{width:100%;min-height:260px;resize:vertical;background:#061018;border:1px solid #203743;border-radius:10px;color:var(--text);padding:15px;font:13px/1.55 ui-monospace,SFMono-Regular,Consolas,monospace;outline:none}textarea:focus,select:focus,input:focus{border-color:#4d8192;box-shadow:0 0 0 2px rgba(73,197,166,.08)}
.actions{display:flex;align-items:center;gap:12px;margin-top:12px}.status{color:var(--muted);font-size:12px}.status.error{color:#ff9b9b}.status.ok{color:var(--accent2)}
label{display:block;color:#b9c9d2;font-size:12px;font-weight:700;margin:14px 0}select,input[type=number],input[type=text]{width:100%;background:#07121a;border:1px solid #203743;border-radius:8px;color:var(--text);padding:10px;outline:none;margin-top:7px}.check{display:flex;gap:9px;align-items:center}.check input{width:auto;margin:0}.summary-box{background:#08141d;border:1px solid #1c303c;border-radius:9px;padding:12px;color:var(--muted);margin-top:15px;font-size:12px}.summary-box strong{color:var(--text)}
#results{overflow:auto}.empty{padding:45px;text-align:center;color:var(--muted);border:1px dashed #27404e;border-radius:10px}.table{width:100%;border-collapse:collapse}.table th{text-align:left;color:#76909f;font-size:10px;text-transform:uppercase;letter-spacing:.08em;padding:10px;border-bottom:1px solid var(--line)}.table td{padding:11px 10px;border-bottom:1px solid #182a35}.num{text-align:right;font-variant-numeric:tabular-nums}.unpriced{color:#ffad7c}.total-row{display:grid;grid-template-columns:1fr 180px;gap:10px;margin-top:15px}.total-box{border:1px solid var(--line);border-radius:10px;padding:14px;background:#08151d}.total-box span{display:block;color:var(--muted);font-size:11px}.total-box strong{font-size:20px}.grand{border-color:#27685c}.grand strong{color:var(--accent2);font-size:24px}
.config-row{display:grid;grid-template-columns:1.3fr 1fr 1fr 110px 42px;gap:10px;align-items:end;padding:14px 0;border-bottom:1px solid var(--line)}.config-row:first-child{padding-top:0}.config-row:last-child{border-bottom:0}.config-row label{margin:0}.config-row button{height:39px}.config-help{color:var(--muted);font-size:11px}
.tool-row{display:flex;gap:9px;align-items:center}.file-btn{display:inline-flex;align-items:center;margin:0;cursor:pointer}.file-btn input{display:none}
footer{border-top:1px solid var(--line);color:#637b89;font-size:11px;display:flex;justify-content:space-between;padding:18px 5vw;gap:20px}
@media(max-width:800px){.grid{grid-template-columns:1fr}.hero{align-items:flex-start}.config-row{grid-template-columns:1fr 1fr}.config-row button{grid-column:1/-1}.total-row{grid-template-columns:1fr}.topbar{padding:0 18px}.shell{padding:25px 14px}.hero h2{font-size:27px}footer{display:block}}