:root{
  --bg:#e5e7eb;
  --text:#0f172a;
  --muted:#475569;
  --border:#e2e8f0;
  --card:#ffffff;
  --shadow: 0 6px 24px rgba(15,23,42,.08);
  --accent:#2563eb;
  --accent2:#0ea5e9;
  --good:#16a34a;
  --warn:#f59e0b;
  --bad:#ef4444;
}
*{box-sizing:border-box}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;background:var(--bg);color:var(--text);line-height:1.45}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1020px;margin:0 auto;padding:18px 16px 40px}
.header{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 0 12px;border-bottom:1px solid var(--border)}
.brand a{font-weight:800;font-size:20px;letter-spacing:.2px}
.brand span{color:var(--accent)}
.nav{display:flex;gap:12px;flex-wrap:wrap}
.nav a{font-size:13px;padding:7px 10px;border:1px solid var(--border);border-radius:10px;background:#f8fafc}
.nav a:hover{border-color:#cbd5e1;text-decoration:none}
.hero{
padding:18px 0 10px
}
.hero h1{margin:10px 0 6px;font-size:30px;line-height:1.15}
.hero p{margin:0;color:var(--muted);max-width:70ch}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:16px}
@media (max-width:900px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.grid{grid-template-columns:1fr}.hero h1{font-size:26px}}
.card{display:block;border:1px solid var(--border);border-radius:14px;padding:14px 14px 12px;background:var(--card);box-shadow:var(--shadow);transition:transform .08s ease,border-color .08s ease}
.card:hover{transform:translateY(-1px);border-color:#cbd5e1;text-decoration:none}
.card h2{font-size:15px;margin:0 0 6px}
.card p{margin:0;color:var(--muted);font-size:13px}
.toolShell{margin-top:14px;border:1px solid var(--border);border-radius:14px;background:var(--card);box-shadow:var(--shadow);padding:14px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:end}
.field{display:flex;flex-direction:column;gap:6px}
label{font-size:12px;color:var(--muted)}
input,select,textarea,button{font:inherit}
input,select,textarea{padding:10px 11px;border:1px solid var(--border);border-radius:12px;outline:none;background:#fff;min-width:180px}
textarea{min-width:260px;min-height:92px}
.btn{padding:10px 12px;border-radius:12px;border:1px solid #cbd5e1;background:#0f172a;color:#fff;cursor:pointer;font-size:13px}
.btn.secondary{background:#fff;color:var(--text)}
.btn:hover{filter:brightness(1.02)}
.btn:active{transform:translateY(1px)}
.display{margin-top:12px;border:1px solid var(--border);border-radius:14px;padding:14px;background:#f8fafc}
.bigTime{font-variant-numeric:tabular-nums;font-size:clamp(34px,5vw,56px);font-weight:800;letter-spacing:.02em}
.metaLine{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:6px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid var(--border);border-radius:999px;background:#fff}
.dot{width:9px;height:9px;border-radius:99px;background:var(--accent2)}
.dot.good{background:var(--good)}
.dot.warn{background:var(--warn)}
.dot.bad{background:var(--bad)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}
.ad{margin-top:16px;border:1px dashed #cbd5e1;border-radius:14px;padding:14px;color:var(--muted);font-size:12px;background:#fff}
.footer{
margin-top:16px;border-top:1px solid var(--border);padding-top:12px;color:var(--muted);font-size:12px;
display:flex;justify-content:center;align-items:center;text-align:center;
}

.footer a{color:var(--muted)}
.footer a:hover{color:var(--text)}
.toast{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);background:rgba(15,23,42,.92);color:#fff;padding:9px 12px;border-radius:999px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .14s ease;z-index:9999}
.toast.show{opacity:1}

.card.section{
  background:#ffffff;
  border:1px solid var(--border);
  border-radius:14px;
  padding:28px 32px;
  max-width:860px;
  margin:0 auto 48px auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}
.card.section h2{margin-top:0}
.card.section h3{margin-top:28px}
.hero .small{font-size:14px;color:#6b7280;margin-top:6px}