:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --text: #e7ecf3;
  --muted: #9aa8bc;
  --accent: #6ec8ff;
  --ok: #3ecf8e;
  --warn: #f0b429;
  --border: #2a3548;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--sans);
  background: radial-gradient(1200px 600px at 10% -10%, #1b2a44, var(--bg));
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}
.wrap { max-width: 920px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.narrow { max-width: 680px; }
header h1 { margin: 0 0 0.35rem; font-size: 1.75rem; }
header p { margin: 0; color: var(--muted); }
.badge {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: #143528;
  color: var(--ok);
  font-size: 0.8rem;
}
.site-nav { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-wrap: wrap; gap: 0.75rem; }
.site-nav a { color: var(--accent); text-decoration: none; font-size: 0.9rem; }
.site-nav a[aria-current="page"] { font-weight: 600; text-decoration: underline; }
.panel {
  margin-top: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}
label { display: block; font-size: 0.85rem; color: var(--muted); margin: 0.75rem 0 0.35rem; }
input, textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: #121a26;
  color: var(--text);
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  font: inherit;
}
textarea { min-height: 110px; resize: vertical; font-family: var(--mono); font-size: 0.85rem; }
.row { display: grid; gap: 0.75rem; }
@media (min-width: 640px) {
  .row.two { grid-template-columns: 1fr 1fr; }
}
.hint { font-size: 0.8rem; color: var(--muted); margin-top: 0.35rem; }
.warn {
  margin-top: 0.75rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  background: #2a2410;
  border: 1px solid #5a4a18;
  color: var(--warn);
  font-size: 0.85rem;
  display: none;
}
.warn.show { display: block; }
.ok-box {
  margin-top: 0.75rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  background: #10261c;
  border: 1px solid #1e4a34;
  color: var(--ok);
  font-size: 0.85rem;
}
.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
button {
  border: none;
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  background: var(--accent);
  color: #041018;
  font-weight: 600;
  cursor: pointer;
}
button.secondary { background: #2a3548; color: var(--text); }
.outputs { margin-top: 1.25rem; display: grid; gap: 1rem; }
@media (min-width: 800px) {
  .outputs.two { grid-template-columns: 1fr 1fr; }
}
.out-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
}
.out-card h2 { margin: 0 0 0.5rem; font-size: 1rem; display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.out-card h2 button { font-size: 0.75rem; padding: 0.25rem 0.5rem; }
.out-card pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
  font-family: var(--mono);
  font-size: 0.78rem;
  background: #121a26;
  border-radius: 8px;
  padding: 0.75rem;
  min-height: 4rem;
}
footer { margin-top: 2rem; color: var(--muted); font-size: 0.8rem; }
footer a { color: var(--accent); }
.prose h2 { margin-top: 1.75rem; font-size: 1.2rem; }
.prose ul { padding-left: 1.2rem; color: var(--muted); }
.prose code { font-family: var(--mono); font-size: 0.85em; }
.check { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.75rem; color: var(--muted); font-size: 0.9rem; }
.check input { width: auto; }

.intro { color: var(--muted); max-width: 42rem; }
.hub-grid {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.85rem;
}
@media (min-width: 640px) {
  .hub-grid { grid-template-columns: 1fr 1fr; }
}
.hub-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  color: inherit;
  text-decoration: none;
}
.hub-card:hover { border-color: var(--accent); }
.hub-card h2 { margin: 0 0 0.35rem; font-size: 1.05rem; color: var(--accent); }
.hub-card p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.callout {
  margin: 1rem 0;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  background: #10261c;
  border: 1px solid #1e4a34;
  color: var(--ok);
  font-size: 0.92rem;
}
.prose p { color: var(--muted); }
.prose ol { color: var(--muted); padding-left: 1.25rem; }
.prose li { margin: 0.45rem 0; }
.prose strong { color: var(--text); }

/* Product-feel · 2026-10-23 */
.brand{font-size:0.72rem;letter-spacing:0.16em;font-weight:700;color:var(--muted);display:flex;align-items:center;gap:0.5rem;margin-bottom:0.85rem}
.brand .mark{font-family:var(--mono);font-size:1.15rem;color:var(--accent);letter-spacing:-0.08em}
.hero h1,.tool-hero h1{font-size:clamp(1.65rem,4vw,2.35rem);line-height:1.15;letter-spacing:-0.03em;margin:0 0 0.75rem;max-width:38rem}
.intro.short{max-width:36rem;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:0.85rem;margin-top:1.25rem}
a.cta{display:inline-flex;align-items:center;gap:0.45rem;background:var(--accent);color:#041018;font-weight:700;text-decoration:none;padding:0.8rem 1.25rem;border-radius:10px;font-size:1rem}
a.cta:hover{filter:brightness(1.08)}
.hero-actions .badge{margin-top:0}
.benefits{margin-top:1.75rem;display:grid;gap:0.85rem}
@media (min-width:700px){.benefits{grid-template-columns:repeat(3,1fr)}}
.benefit{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:1rem 1.1rem}
.benefit h2{margin:0 0 0.35rem;font-size:0.95rem;color:var(--text)}
.benefit p{margin:0;color:var(--muted);font-size:0.88rem}
.hub-card-primary{border-color:var(--accent);box-shadow:0 0 0 1px rgba(91,159,255,0.25)}
.hub-card-primary h2{font-size:1.1rem}
.details-panel{margin-top:1.75rem;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:0.85rem 1.1rem;color:var(--muted);font-size:0.9rem}
.details-panel summary{cursor:pointer;color:var(--text);font-weight:600;list-style:none}
.details-panel summary::-webkit-details-marker{display:none}
.details-panel summary::before{content:"▸ ";color:var(--accent)}
.details-panel[open] summary::before{content:"▾ "}
.tool-hero{position:relative;padding-bottom:0.25rem}
.privacy-pill{display:inline-flex;align-items:center;gap:0.35rem;font-size:0.78rem;color:var(--ok);margin-bottom:0.65rem}
.privacy-pill span{font-size:0.55rem}
.panel{margin-top:1.15rem}
header.hero .site-nav,header.tool-hero .site-nav{margin-top:1.15rem}