:root {
  --bg: #ffffff; --text: #111827; --muted: #6b7280; --faint: #9ca3af;
  --border: #e5e7eb; --border-strong: #d1d5db; --field: #ffffff;
  --accent: #7c3aed; --accent-hover: #6d28d9; --accent-soft: #f5f3ff; --accent-text: #ffffff;
  --ok: #15803d; --ok-soft: #ecfdf5; --warn: #b45309; --warn-soft: #fffbeb;
  --bad: #b91c1c; --bad-soft: #fef2f2; --row-hover: #f9fafb;
  --shadow: 0 1px 2px rgba(17,24,39,.04), 0 8px 24px rgba(17,24,39,.06);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.55 "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased; display: flex; flex-direction: column; min-height: 100%;
}

nav {
  position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(8px); border-bottom: 1px solid var(--border);
}
nav .inner {
  max-width: 1200px; margin: 0 auto; padding: 0 16px; height: 60px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
nav .logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 600; }
nav .logo .mark { width: 30px; height: 30px; border-radius: 8px; display: block; }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
nav li a {
  display: block; padding: 8px 12px; border-radius: 8px; font-size: 14px; font-weight: 500;
  color: var(--muted); text-decoration: none; transition: background .1s, color .1s;
}
nav li a:hover { background: #f3f4f6; color: var(--text); }
nav li a.active { color: var(--accent); background: var(--accent-soft); }

footer.site {
  margin-top: auto; border-top: 1px solid var(--border); padding: 20px 16px;
  font-size: 13px; color: var(--faint);
}
footer.site .inner {
  max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
footer.site a { color: var(--muted); text-decoration: none; margin-left: 16px; display: inline-block; padding: 8px 0; }   /* taller tap target */
footer.site a:first-child { margin-left: 0; }
footer.site a:hover { color: var(--text); text-decoration: underline; }

/* very small phones (320–400 px): keep logo + 3 menu links on one line */
@media (max-width: 400px) {
  nav .inner { gap: 8px; }
  nav .logo { gap: 8px; }
  nav ul { gap: 0; }
  nav li a { padding: 8px 8px; }
}

.page { max-width: 680px; margin: 0 auto; padding: 48px 16px 64px; width: 100%; }
.page h1 { font-size: 28px; font-weight: 700; letter-spacing: -.02em; margin: 0 0 6px; line-height: 1.2; }
.page .meta { color: var(--faint); font-size: 13px; margin: 0 0 32px; }
.page h2 { font-size: 18px; font-weight: 600; margin: 32px 0 8px; }
.page p, .page li { color: #374151; }
.page p { margin: 0 0 12px; }
.page ul { padding-left: 20px; margin: 0 0 12px; }
.page li { margin-bottom: 4px; }
.page a { color: var(--accent); }
.page .cta {
  display: inline-block; margin-top: 8px; padding: 10px 18px; border-radius: 10px;
  background: var(--accent); color: #fff; font-weight: 600; text-decoration: none;
}
.page .cta:hover { background: var(--accent-hover); }