:root {
  --bg: #090b10;
  --bg-elevated: #12151d;
  --card: #181c27;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f4f6fb;
  --muted: #9aa3b5;
  --accent: #33c7db;
  --accent-soft: rgba(51, 199, 219, 0.12);
  --warn: #f0b429;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
}

body {
  min-height: 100vh;
}

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

.wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 20px 80px;
}

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand:hover { text-decoration: none; }

.mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #33c7db, #5b8cff);
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #061018;
  letter-spacing: -0.04em;
}

.brand strong { display: block; font-size: 16px; }
.brand span { display: block; color: var(--muted); font-size: 12px; margin-top: 1px; }

nav.crumbs {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  font-size: 14px;
}

h1 {
  font-size: 34px;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}

.meta {
  color: var(--muted);
  margin-bottom: 28px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  margin: 18px 0;
}

.notice {
  background: var(--accent-soft);
  border: 1px solid rgba(51, 199, 219, 0.25);
}

.warn {
  background: rgba(240, 180, 41, 0.1);
  border: 1px solid rgba(240, 180, 41, 0.28);
}

h2 {
  font-size: 20px;
  margin: 32px 0 10px;
}

p, li { color: #d5dbe8; }
ul { padding-left: 20px; }
li { margin: 6px 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.tile {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  color: var(--text);
  text-decoration: none;
  display: block;
}

.tile:hover {
  text-decoration: none;
  border-color: rgba(51, 199, 219, 0.4);
}

.tile h3 { margin: 0 0 8px; font-size: 18px; }
.tile p { margin: 0; color: var(--muted); font-size: 14px; }

.cta {
  display: inline-block;
  background: var(--accent);
  color: #061018;
  font-weight: 700;
  padding: 12px 18px;
  border-radius: 12px;
  margin-top: 8px;
}

.cta:hover { text-decoration: none; }

footer {
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}