:root {
  --bg: #0d0f12;
  --bg-elev: #14181f;
  --border: rgba(200, 210, 225, 0.12);
  --text: #e8ecf4;
  --muted: #8b95a8;
  --accent: #7ee787;
  --accent-dim: rgba(126, 231, 135, 0.35);
  --patrol: #54a0ff;
  --danger: #ff6b6b;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
  --radius: 10px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(84, 160, 255, 0.06), var(--bg));
  line-height: 1.45;
}

.subpage-top {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1.25rem 0;
}

.back {
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.back:hover {
  text-decoration: underline;
}

.subpage-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1.25rem 2rem;
}

.subpage-main h1 {
  margin: 0.5rem 0 0.25rem;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.subpage-main .lede {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
}

.btn {
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  cursor: pointer;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-primary {
  background: linear-gradient(135deg, rgba(126, 231, 135, 0.22), rgba(84, 160, 255, 0.15));
  border-color: var(--accent-dim);
  color: var(--accent);
}

input,
select,
textarea {
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.5rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--accent-dim);
  border-color: var(--accent);
}

kbd {
  font-family: var(--mono);
  font-size: 0.75rem;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.35);
}