:root {
  --ink: #17324d;
  --accent: #6b1f2c;
  --link: #2d5b8d;
  --line: #d9e1e8;
  --soft: #f6f8fa;
}

body {
  color: var(--ink);
  font-family: "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  line-height: 1.75;
}

.navbar, .navbar-brand, .navbar-nav .nav-link { color: var(--ink); }
.navbar { border-bottom: 1px solid var(--line); }
.navbar-nav .nav-link:hover, a { color: var(--link); }

#title-block-header { margin-top: 2.5rem; }
h1, h2, h3 { color: var(--ink); font-weight: 650; }
h2 { border-bottom: 1px solid var(--line); padding-bottom: .35rem; margin-top: 2.2rem; }
.lead { font-size: 1.18rem; max-width: 45rem; }

.homepage-hero {
  display: block;
  width: 100%;
  height: auto;
  margin: 1.1rem 0 1.6rem;
  border-radius: 0.75rem;
  box-shadow: 0 0.45rem 1.4rem rgba(18, 48, 74, 0.16);
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.entry-card {
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: .2rem;
  background: #fff;
  padding: 1.15rem;
}

.entry-card h3 { font-size: 1.08rem; margin-top: 0; }
.entry-card p { margin-bottom: .65rem; }
.entry-card a { font-weight: 650; text-decoration: none; }

.safety-note {
  background: #fff7df;
  border-left: 4px solid #a46418;
  padding: 1rem 1.1rem;
  margin: 1.5rem 0;
}

code { color: #6b1f2c; }

@media (max-width: 768px) {
  body { font-size: 16px; }
  .entry-grid { grid-template-columns: 1fr; }
  #title-block-header { margin-top: 1.5rem; }
}

@media (max-width: 576px) {
  .homepage-hero {
    margin: 0.85rem 0 1.25rem;
    border-radius: 0.5rem;
  }
}