/* 第1套：场景驱动 · 横幅分栏 · 浅米底 + 青绿 + 朱红按钮 · 衬线标题 */
:root {
  --paper: #f4efe6;
  --sheet: #fffdf8;
  --ink: #1c2b2b;
  --mute: #5a6a68;
  --brand: #0e5c5c;
  --brand-deep: #083d3d;
  --line: #d8cfc0;
  --cta: #d4533c;
  --cta-ink: #fff8f5;
  --focus: #0e5c5c;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 17px;
  line-height: 1.75;
}

a { color: var(--brand); }
img { max-width: 100%; }

.mast {
  background: var(--sheet);
  border-bottom: 3px solid var(--brand);
}
.mast-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--brand-deep);
  font-family: Georgia, "Source Han Serif SC", "Songti SC", serif;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.brand svg { display: block; }
nav.menu { display: flex; gap: 0; }
nav.menu a {
  text-decoration: none;
  color: var(--ink);
  padding: 6px 14px;
  border-right: 1px solid var(--line);
  font-size: 15px;
}
nav.menu a:first-child { border-left: 1px solid var(--line); }
nav.menu a.on {
  background: var(--brand);
  color: #f4efe6;
}

.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 24px 40px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: start;
}
.hero h1 {
  font-family: Georgia, "Source Han Serif SC", "Songti SC", serif;
  font-size: 34px;
  line-height: 1.35;
  margin: 0 0 18px;
  color: var(--brand-deep);
}
.hero .lead { margin: 0 0 22px; color: var(--mute); }
.btn-dl {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--cta);
  color: var(--cta-ink);
  text-decoration: none;
  padding: 14px 22px;
  font-size: 17px;
  font-weight: 700;
}
.btn-dl:hover { background: #b94430; }
.btn-ghost {
  display: inline-flex;
  margin-left: 12px;
  padding: 14px 18px;
  text-decoration: none;
  border: 1px solid var(--brand);
  color: var(--brand);
}
.aside-card {
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 24px;
}
.aside-card h2 {
  font-size: 18px;
  margin: 0 0 12px;
  font-family: Georgia, "Source Han Serif SC", serif;
}
.aside-card ul { margin: 0; padding-left: 18px; }
.aside-card li { margin: 8px 0; }

.band {
  padding: 56px 0;
}
.band.tint { background: var(--sheet); }
.band-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}
.band h2 {
  font-family: Georgia, "Source Han Serif SC", "Songti SC", serif;
  font-size: 26px;
  line-height: 1.4;
  margin: 0 0 16px;
  color: var(--brand-deep);
}
.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.scene-grid article {
  border-top: 4px solid var(--brand);
  padding-top: 14px;
}
.note {
  font-size: 15px;
  color: var(--mute);
  border-left: 3px solid var(--cta);
  padding-left: 14px;
}
table.scene-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
table.scene-table th,
table.scene-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
table.scene-table th { background: #e7efe9; }

.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li {
  display: flex;
  gap: 10px;
  margin: 12px 0;
  align-items: flex-start;
}
.check-list svg { flex: 0 0 20px; margin-top: 4px; }

.faq dt {
  font-weight: 700;
  margin-top: 20px;
}
.faq dd { margin: 8px 0 0; color: var(--ink); }

.colophon {
  background: var(--brand-deep);
  color: #e4eceb;
  padding: 36px 24px 48px;
  font-size: 14px;
  line-height: 1.7;
}
.colophon-inner { max-width: 1080px; margin: 0 auto; }
.colophon a { color: #d7efe8; }
.colophon .foot-nav { margin-top: 16px; display: flex; gap: 18px; }

.icon { display: inline-block; vertical-align: middle; }

@media (max-width: 860px) {
  .mast-inner { flex-direction: column; align-items: flex-start; }
  .hero { grid-template-columns: 1fr; padding-top: 28px; }
  .scene-grid { grid-template-columns: 1fr; }
  .btn-ghost { margin-left: 0; margin-top: 10px; display: inline-flex; }
}