:root {
  --bg: #0e1220;
  --panel: #171c2e;
  --fg: #eef1f8;
  --muted: #9aa3bd;
  --accent: #6c8cff;
  --line: #262c42;
  --radius: 16px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px 64px;
}

header.hero {
  background: linear-gradient(135deg, #6c8cff 0%, #9b6cff 100%);
  padding: 40px 20px 34px;
  text-align: center;
  color: #fff;
}

header.hero .logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.18);
  font-size: 32px;
  margin-bottom: 12px;
}

header.hero h1 {
  margin: 0;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.3px;
}

header.hero p {
  margin: 6px 0 0;
  font-size: 14px;
  opacity: 0.9;
}

nav.crumbs {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 20px 0;
  font-size: 13px;
}

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

main { padding-top: 12px; }

h2 {
  font-size: 19px;
  font-weight: 800;
  margin: 30px 0 8px;
  letter-spacing: -0.2px;
}

p, li { font-size: 15px; color: var(--fg); }

.muted { color: var(--muted); }

.effective {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

a { color: var(--accent); }

ul { padding-left: 20px; }
li { margin-bottom: 6px; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-top: 18px;
}

.tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 24px;
}

.tile {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.tile:hover { border-color: var(--accent); transform: translateY(-2px); }
.tile .t { font-weight: 800; font-size: 16px; }
.tile .d { color: var(--muted); font-size: 13px; margin-top: 2px; }

.mail {
  display: inline-block;
  margin-top: 6px;
  font-weight: 700;
  font-size: 16px;
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  color: var(--muted);
  font-size: 12.5px;
}

footer a { color: var(--muted); }

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fb;
    --panel: #ffffff;
    --fg: #1b2136;
    --muted: #5c6484;
    --line: #e6e8f2;
  }
}