/* 第6套：选型驱动 · 石板金分栏选择器 */
:root {
  --slate: #2c3e50;
  --gold: #c9a227;
  --fog: #f4f6f8;
  --ink: #1f2a33;
  --mute: #5c6b76;
  --line: #d7dee5;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--fog);
  color: var(--ink);
  font-family: "Helvetica Neue", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

.top {
  background: var(--slate);
  color: #fff;
}
.top .inner {
  width: min(1140px, calc(100% - 28px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}
.brand {
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  display: flex;
  gap: 10px;
  align-items: center;
}
nav.gold a {
  color: #dce3ea;
  text-decoration: none;
  margin-left: 16px;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
nav.gold a.current { color: var(--gold); border-bottom-color: var(--gold); }

.split-hero {
  width: min(1140px, calc(100% - 28px));
  margin: 24px auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 320px;
  background: #fff;
  border: 1px solid var(--line);
}
.split-hero .left { padding: 36px 32px; }
.split-hero .right {
  background: var(--slate);
  color: #fff;
  padding: 28px 26px;
}
.split-hero h1 { font-size: 28px; line-height: 1.35; margin: 0 0 12px; }
.split-hero .right h2 { margin-top: 0; color: var(--gold); font-size: 18px; }
.pick a {
  display: block;
  background: var(--gold);
  color: #1f2a14;
  text-decoration: none;
  font-weight: 800;
  padding: 10px 12px;
  margin: 8px 0;
  text-align: center;
}
.pick a.dim { background: transparent; color: #fff; border: 1px solid #8a97a3; }

.page { width: min(1140px, calc(100% - 28px)); margin: 0 auto 36px; }
.page h2 { font-size: 22px; border-left: 6px solid var(--gold); padding-left: 10px; }

.plats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.plat {
  background: #fff;
  border: 1px solid var(--line);
  padding: 16px;
  text-align: center;
}
.plat strong { display: block; margin: 8px 0; }

.chooser {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
.chooser th { background: var(--slate); color: #fff; padding: 10px; }
.chooser td { padding: 10px; border-bottom: 1px solid var(--line); }
.chooser tr:nth-child(even) td { background: #f7f1de; }

.two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.panel { background: #fff; border: 1px solid var(--line); padding: 16px 18px; }
.faq h3 { font-size: 16px; margin: 14px 0 6px; }
.faq p { color: var(--mute); margin: 0; }

footer {
  background: #1a252f;
  color: #c5d0d8;
  padding: 28px 0;
  font-size: 13px;
}
footer .page { margin: 0 auto; }
footer a { color: var(--gold); }

@media (max-width: 880px) {
  .split-hero, .plats, .two { grid-template-columns: 1fr; }
  .top .inner { flex-direction: column; align-items: flex-start; gap: 8px; }
}