/* 第6套：选型驱动 · 卡片决策 */
:root {
  --bg: #eef2ff;
  --ink: #0f172a;
  --blue: #1d4ed8;
  --blue-d: #1e3a8a;
  --amber: #f59e0b;
  --card: #ffffff;
  --line: #c7d2fe;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Trebuchet MS", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
}
a { color: var(--blue); }
.site-head {
  background: linear-gradient(90deg, var(--blue-d), #312e81);
  color: #fff;
}
.head-inner {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  font-size: 22px;
}
.nav { display: flex; background: rgba(255,255,255,.08); border-radius: 10px; padding: 4px; }
.nav a {
  color: #e0e7ff;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 8px;
}
.nav a.active { background: var(--amber); color: #111827; font-weight: 700; }
.shell { width: min(1160px, calc(100% - 32px)); margin: 28px auto 40px; }
.hero-pick {
  background: var(--card);
  border-radius: 20px;
  padding: 28px 28px 24px;
  box-shadow: 0 10px 30px rgba(30, 58, 138, .08);
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 24px;
}
h1 { font-size: 32px; line-height: 1.3; margin-bottom: 12px; }
h2 { font-size: 22px; margin-bottom: 12px; }
.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 10px;
  font-weight: 700;
}
.btn.amber { background: var(--amber); color: #111827; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 16px; }
.chip {
  background: #e0e7ff;
  color: var(--blue-d);
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 13px;
}
.choose {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 22px 0;
}
.pick {
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  min-height: 180px;
}
.pick h3 { margin: 8px 0; font-size: 18px; }
.plats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 16px 0 28px;
}
.plat {
  background: var(--card);
  border-radius: 14px;
  padding: 16px;
  text-align: center;
  border: 1px solid var(--line);
}
.plat a.btn { display: block; margin-top: 10px; padding: 10px 8px; font-size: 14px; }
.path {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 16px 0 24px;
}
.path article {
  background: #fff;
  border-radius: 14px;
  padding: 16px;
}
.faq { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.faq-item {
  background: #fff;
  border-radius: 12px;
  padding: 14px 16px;
}
.faq-item h3 { font-size: 16px; margin-bottom: 6px; }
.site-foot {
  background: var(--ink);
  color: #cbd5e1;
  padding: 30px 0;
  font-size: 13px;
}
.site-foot .shell { margin: 0 auto; }
.site-foot a { color: #fff; }
.safe { color: #fbbf24; margin-bottom: 8px; }
@media (max-width: 900px) {
  .hero-pick, .choose, .plats, .path, .faq { grid-template-columns: 1fr; }
}