* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0f1117;
  color: #e0e0e0;
  min-height: 100vh;
}
.header {
  padding: 20px 32px;
  border-bottom: 1px solid #2a2a3a;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header h1 { font-size: 1.3rem; font-weight: 600; color: #fff; }
.header .time { font-size: 0.9rem; color: #888; }
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  padding: 32px;
  max-width: 900px;
}
.card {
  background: #1a1a2e;
  border: 1px solid #2a2a3a;
  border-radius: 12px;
  padding: 28px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.1s;
  display: block;
}
.card:hover { border-color: #5a7a9a; transform: translateY(-2px); }
.card .icon { font-size: 2rem; margin-bottom: 12px; }
.card h2 { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; color: #fff; }
.card p { font-size: 0.85rem; color: #888; line-height: 1.4; }
.card.disabled { opacity: 0.5; cursor: default; pointer-events: none; }
.briefing {
  margin: 0 32px 32px;
  max-width: 836px;
  background: #1a1a2e;
  border: 1px solid #2a2a3a;
  border-radius: 12px;
  padding: 20px 24px;
}
.briefing h3 { font-size: 0.9rem; color: #888; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.briefing .content { font-size: 0.9rem; color: #ccc; line-height: 1.6; white-space: pre-wrap; }
.briefing .empty { color: #555; font-style: italic; }