:root {
  color: #152238;
  background: #f5f7fa;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

.page {
  margin: 0 auto;
  max-width: 68rem;
  min-height: 100vh;
  padding: 2rem clamp(1.25rem, 4vw, 3rem);
}

.site-header {
  border-bottom: 1px solid #dce3eb;
  padding-bottom: 1.25rem;
}

.eyebrow {
  color: #3f647e;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin: 0;
}

main {
  padding: clamp(3.5rem, 10vw, 7rem) 0 4rem;
}

.hero {
  max-width: 48rem;
}

.lead {
  color: #4c5c73;
  font-size: clamp(1.12rem, 2vw, 1.35rem);
  line-height: 1.8;
  margin: 1.5rem 0 0;
}

.entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.system-entry {
  background: #3f647e;
  border-radius: 0.5rem;
  color: #fff;
  display: inline-flex;
  font-weight: 700;
  padding: 0.75rem 1.1rem;
}

.system-entry:hover,
.system-entry:focus-visible {
  background: #2f5067;
  text-decoration: none;
}

h1 {
  font-size: clamp(2.35rem, 6vw, 4rem);
  letter-spacing: 0.02em;
  margin: 0;
}

.section {
  margin-top: clamp(3.5rem, 8vw, 5.5rem);
  max-width: 58rem;
}

h2 {
  font-size: 1.25rem;
  letter-spacing: 0.03em;
  margin: 0 0 1rem;
}

h3 {
  font-size: 1.1rem;
  margin: 0;
}

.section > p,
.card p {
  color: #4c5c73;
  line-height: 1.8;
}

.section > p {
  margin: 0;
}

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

.card {
  background: #fff;
  border: 1px solid #dce3eb;
  border-radius: 0.75rem;
  min-height: 12rem;
  padding: 1.5rem;
}

.card p {
  font-size: 0.95rem;
  margin: 0.9rem 0 0;
}

footer {
  border-top: 1px solid #dce3eb;
  color: #66748a;
  font-size: 0.9rem;
  padding: 1.5rem 0 0;
}

footer p {
  margin: 0 0 0.5rem;
}

.filing-links {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.9rem;
}

.public-security-beian {
  align-items: center;
  display: inline-flex;
  gap: 0.3rem;
  white-space: nowrap;
}

.public-security-beian img {
  display: block;
  flex: 0 0 auto;
}

a {
  color: #3f647e;
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

@media (max-width: 44rem) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: 0;
  }
}