:root{ --bg:#0f172a; --muted:#94a3b8; --text:#e5e7eb; --accent:#22d3ee; --ok:#34d399; --border:#1f2937; --card:#0b1220;}
*{box-sizing:border-box}
body{margin:0;background:linear-gradient(180deg,#0b1220,#0f172a);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif}
a{color:inherit;text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:24px}
.nav{display:flex;gap:16px;align-items:center;padding:12px 24px;border-bottom:1px solid var(--border);background:rgba(17,24,39,0.6);backdrop-filter:saturate(150%) blur(6px);position:sticky;top:0}
.nav a{padding:8px 10px;border-radius:8px}
.nav a:hover{background:rgba(255,255,255,0.06)}
.brand{font-weight:700}
.back{display:flex;align-items:center;gap:6px;border:1px solid var(--border);border-radius:10px}
h1{font-size:clamp(22px,4vw,36px);margin:16px 0}
h2{font-size:20px;margin:8px 0}
.card{background:rgba(17,24,39,0.7);border:1px solid var(--border);border-radius:16px;padding:16px}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.span-6{grid-column:span 6}
.span-12{grid-column:span 12}
@media(max-width:900px){.span-6{grid-column:span 12}}
.btn{display:inline-block;padding:12px 16px;border-radius:12px;border:1px solid var(--border);background:#0b1220;color:#e5e7eb}
/* Neutralize .primary so it's same as .btn until we re-enable */
.btn.primary{background:#0b1220;color:#e5e7eb;border:1px solid var(--border);}
.footer{margin:24px;color:var(--muted);font-size:12px}
.hint{font-size:12px;color:var(--muted)}
label{display:flex;justify-content:space-between;gap:12px;align-items:center;color:var(--muted);font-size:14px;margin:8px 0}
input,select{width:100%;padding:12px;border-radius:12px;border:1px solid var(--border);background:#0b1220;color:#e5e7eb;font-size:15px}
.row{display:grid;grid-template-columns:1fr 220px;gap:12px;align-items:center}
.outputs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:900px){.outputs{grid-template-columns:1fr}}
.kpi{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px}
.kpi h3{margin:0 0 6px 0;font-size:14px;color:var(--muted)}
.kpi .val{font-size:22px;font-variant-numeric:tabular-nums}
.badge{font-size:11px;color:#0b1220;background:var(--ok);padding:2px 8px;border-radius:999px;font-weight:700}
.divider{height:1px;background:var(--border);margin:12px 0}
.err{color:#f43f5e;font-size:13px;margin-top:6px}
ul.clean{margin:0;padding-left:18px}