/* 第1套：场景条带 · 单栏交错 · 青绿砂色 */
:root {
  --ink: #163832;
  --teal: #0d7377;
  --teal-deep: #083e41;
  --sand: #f3ead9;
  --paper: #fffdf7;
  --coral: #d94b3c;
  --line: #c9bfa8;
  --muted: #4f6a64;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Source Han Serif SC", "Songti SC", "SimSun", "Noto Serif SC", serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
  font-size: 17px;
}
a { color: var(--teal-deep); }
img { max-width: 100%; }
.wrap { width: min(920px, calc(100% - 40px)); margin: 0 auto; }
.brand-bar {
  background: var(--teal-deep);
  color: #f7f1e4;
  padding: 14px 0;
}
.brand-bar .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-size: 22px;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: #f7f1e4;
  font-weight: 700;
}
.nav { display: flex; gap: 28px; list-style: none; }
.nav a {
  color: #d7e8e6;
  text-decoration: none;
  font-size: 15px;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}
.nav a.current { color: #fff; border-bottom-color: var(--coral); }
.hero {
  background: var(--sand);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 48px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 36px;
  align-items: end;
}
.hero h1 {
  font-size: 34px;
  line-height: 1.35;
  margin-bottom: 16px;
}
.lead { color: var(--muted); margin-bottom: 22px; font-size: 18px; }
.btn {
  display: inline-block;
  background: var(--coral);
  color: #fff;
  text-decoration: none;
  padding: 14px 26px;
  font-size: 18px;
  letter-spacing: 0.04em;
}
.btn-ghost {
  display: inline-block;
  margin-left: 12px;
  padding: 12px 18px;
  color: var(--teal-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--teal);
}
.dl-panel {
  background: #fff;
  border: 1px solid var(--line);
  padding: 22px 20px 18px;
}
.dl-panel h2 { font-size: 18px; margin-bottom: 12px; }
.dl-list { list-style: none; display: grid; gap: 10px; }
.dl-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  background: var(--teal);
  color: #fff;
  padding: 10px 12px;
  font-size: 15px;
}
.dl-list a svg { flex: 0 0 18px; }
.scene {
  padding: 48px 0;
}
.scene:nth-of-type(odd) { background: #e7f2f1; }
.scene:nth-of-type(even) { background: var(--paper); }
.scene-head {
  display: flex;
  align-items: flex-end;
  gap: 18px;
  margin-bottom: 18px;
}
.scene-no {
  font-size: 56px;
  line-height: 0.85;
  color: var(--teal);
  font-weight: 700;
}
.scene h2 { font-size: 26px; }
.scene p { margin-bottom: 14px; }
.scene ul { margin: 8px 0 16px 22px; }
.compare {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 15px;
}
.compare th, .compare td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}
.compare th { background: var(--teal-deep); color: #fff; }
.quote {
  border-left: 4px solid var(--coral);
  padding: 8px 0 8px 16px;
  margin: 16px 0;
  color: var(--muted);
}
.faq { padding: 48px 0 56px; background: var(--sand); }
.faq h2 { margin-bottom: 20px; font-size: 26px; }
.faq-item { margin-bottom: 22px; }
.faq-item h3 { font-size: 18px; margin-bottom: 6px; }
.site-footer {
  background: var(--teal-deep);
  color: #d5e4e2;
  padding: 28px 0 36px;
  font-size: 14px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
.site-footer p { margin-bottom: 8px; }
.foot-nav { display: flex; gap: 18px; margin: 12px 0 16px; }
.foot-nav a { color: #f3ead9; }
.safe { color: #fff; }
@media (max-width: 800px) {
  .hero-grid { grid-template-columns: 1fr; }
  .brand-bar .wrap { flex-direction: column; align-items: flex-start; }
  .scene-no { font-size: 40px; }
}