/* 第4套：对切开篇 + 色带堆叠，橙炭步骤流 */
:root {
  --orange: #e85d04;
  --orange-2: #f48c06;
  --char: #1d1d1d;
  --deep: #370617;
  --cream: #fff8f0;
  --muted: #4a4038;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--cream);
  color: var(--char);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--orange); }
a:hover { color: var(--deep); }

.bar {
  background: var(--char);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  min-height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}
.bar nav a {
  color: #f0e6dc;
  text-decoration: none;
  margin-left: 22px;
  font-weight: 600;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
.bar nav a.active { color: var(--orange-2); border-bottom-color: var(--orange-2); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 380px;
}
.split .copy {
  background: var(--char);
  color: #fff8f0;
  padding: 48px 40px;
}
.split h1 { font-size: 30px; line-height: 1.35; margin-bottom: 16px; }
.split .lead { color: #e8d5c4; margin-bottom: 22px; }
.split .pane {
  background: var(--orange);
  color: #fff;
  padding: 48px 36px;
}
.split .pane h2 { font-size: 20px; margin-bottom: 12px; }
.split .pane p { margin-bottom: 16px; }
.btn {
  display: inline-block;
  padding: 13px 22px;
  font-weight: 800;
  text-decoration: none;
  border: 0;
}
.btn-light { background: #fff; color: var(--deep); }
.btn-light:hover { background: #ffe8cc; color: var(--deep); }
.btn-dark { background: var(--char); color: #fff; }
.btn-dark:hover { background: #000; color: #fff; }

.band {
  padding: 40px 8%;
}
.band.alt { background: #fff; }
.band.tint { background: #ffe8cc; }
.band.ink { background: #2b211c; color: #f6efe8; }
.band.ink a { color: var(--orange-2); }
.band h2 {
  font-size: 24px;
  margin-bottom: 14px;
}
.band p { margin-bottom: 12px; max-width: 900px; }

.steps {
  list-style: none;
  counter-reset: s;
  max-width: 860px;
}
.steps li {
  counter-increment: s;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  margin-bottom: 18px;
}
.steps li::before {
  content: counter(s);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

table.req {
  width: min(860px, 100%);
  border-collapse: collapse;
  margin: 12px 0 8px;
}
table.req th, table.req td {
  border: 1px solid #e6d3b8;
  padding: 10px 12px;
  text-align: left;
  background: #fff;
}
table.req th { background: #ffd59a; }

.faq-item { max-width: 860px; padding: 12px 0; border-bottom: 1px solid #e6d3b8; }
.faq-item h3 { font-size: 17px; margin-bottom: 6px; }

footer {
  background: var(--deep);
  color: #f3d5c8;
  padding: 24px 8%;
  font-size: 13px;
}
footer .safe { color: #c6e39a; margin-bottom: 8px; }
footer a { color: #ffd59a; }

@media (max-width: 800px) {
  .split { grid-template-columns: 1fr; }
  .bar { flex-direction: column; padding: 12px 16px; gap: 8px; }
  .bar nav a { margin-left: 10px; }
  .band { padding: 28px 5%; }
}