:root {
  color-scheme: light;
  --bg: #f3efe6;
  --panel: rgba(255, 252, 246, 0.94);
  --ink: #1f2c2b;
  --muted: #5c6663;
  --line: rgba(31, 44, 43, 0.12);
  --accent-dcs: #9c3412;
  --accent-dcs-soft: #f5d8c6;
  --accent-sis: #1c5f73;
  --accent-sis-soft: #c8e1ea;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(156, 52, 18, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(28, 95, 115, 0.16), transparent 28%),
    linear-gradient(180deg, #efe4d1 0%, var(--bg) 60%, #ede7db 100%);
  min-height: 100vh;
}

.portal {
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px 24px 80px;
}

.hero {
  text-align: center;
  margin-bottom: 48px;
}

.eyebrow {
  display: inline-block;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 12px;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.1;
}

.lead {
  max-width: 760px;
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 8px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: 0 16px 40px rgba(48, 35, 23, 0.08);
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(48, 35, 23, 0.12);
}

.badge {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.card.dcs .badge {
  background: var(--accent-dcs-soft);
  color: var(--accent-dcs);
}

.card.sis .badge {
  background: var(--accent-sis-soft);
  color: var(--accent-sis);
}

.card h2 {
  margin: 0;
  font-size: 22px;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.go {
  margin-top: auto;
  align-self: flex-end;
  font-weight: 700;
  font-size: 14px;
}

.card.dcs .go {
  color: var(--accent-dcs);
}

.card.sis .go {
  color: var(--accent-sis);
}

.meta {
  margin-top: 56px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

@media (max-width: 720px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .portal {
    padding: 40px 16px 60px;
  }
}