:root {
  --bg: #0e1116;
  --bg-elev: #171b22;
  --bg-input: #0b0d11;
  --line: #2a3140;
  --text: #e8edf5;
  --muted: #93a0b5;
  --accent: #d7a45a;
  --accent-dim: #8a6230;
  --ok: #7dcea0;
  --danger: #e07a7a;
  --focus: #d7a45a;
  --radius: 12px;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
    ui-sans-serif, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: min(980px, calc(100% - 32px)); margin: 0 auto; }
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0 8px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}
.brand strong { font-size: 20px; letter-spacing: 0.02em; }
.brand span { color: var(--muted); font-size: 13px; }
nav { display: flex; gap: 16px; font-size: 14px; }
nav a { color: var(--muted); }
nav a:hover { color: var(--text); text-decoration: none; }

.hero { padding: 28px 0 8px; }
.hero h1 {
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.2;
  margin: 0 0 12px;
  font-weight: 650;
}
.hero p { margin: 0; color: var(--muted); max-width: 40rem; }

.badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.badge {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--muted);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
}

.panel {
  margin: 24px 0;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
textarea {
  width: 100%;
  min-height: 180px;
  border: 0;
  resize: vertical;
  padding: 16px;
  background: var(--bg-input);
  color: var(--text);
  font: 14px/1.55 var(--mono);
  outline: none;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
}
button, .btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 14px;
  font: 14px var(--font);
  cursor: pointer;
}
button.primary, a.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a140c;
  font-weight: 650;
  text-decoration: none;
}
button:hover, .btn:hover { filter: brightness(1.08); }
button:focus-visible, a:focus-visible, textarea:focus-visible, input:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
button:disabled { opacity: 0.45; cursor: not-allowed; }

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 0 16px 12px;
  color: var(--muted);
  font-size: 13px;
}
.stats b { color: var(--ok); font-weight: 650; }

.drop {
  margin: 0 16px 16px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 14px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}
.drop.over { border-color: var(--accent); color: var(--text); }

details.detectors {
  margin: 0 16px 16px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  color: var(--muted);
  font-size: 13px;
}
details.detectors summary { cursor: pointer; color: var(--text); }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
  margin-top: 10px;
}
label.check { display: flex; gap: 8px; align-items: center; color: var(--muted); }

.pro-box, .notice {
  margin: 16px 0 40px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
}
.pro-box h2, .doc h1 { margin-top: 0; }
input[type="text"], input[type="password"] {
  width: 100%;
  margin: 8px 0 12px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-input);
  color: var(--text);
  font: 14px var(--mono);
}
.ok { color: var(--ok); }
.warn { color: var(--danger); }
.muted { color: var(--muted); }
footer {
  padding: 28px 0 48px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
}
.doc { padding: 24px 0 64px; }
.doc h1 { font-size: 28px; }
.doc li { margin: 6px 0; }
.price-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 720px) {
  .price-row { grid-template-columns: 1fr; }
  header { flex-direction: column; align-items: flex-start; }
}