/* 第1套：场景驱动 · 双栏海军蓝编辑式 */
:root {
  --ink: #12233f;
  --navy: #1a365d;
  --navy-deep: #0f2340;
  --link: #2457a3;
  --gold: #b8860b;
  --paper: #f4f1ea;
  --card: #ffffff;
  --line: #d5cfc3;
  --muted: #5b6574;
  --ok: #1f6b4a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Georgia", "Songti SC", "SimSun", "Noto Serif SC", serif;
  line-height: 1.75;
}

.site-header {
  background: var(--navy-deep);
  color: #f7f3ea;
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 3px solid var(--gold);
}
.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #f7f3ea;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.brand svg { display: block; }
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid #d6c7a1;
  color: #f7f3ea;
  padding: 8px 12px;
  font-family: inherit;
}
.site-nav { display: flex; gap: 8px; }
.site-nav a {
  color: #e8dfc8;
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 2px;
}
.site-nav a:hover { background: rgba(255,255,255,0.08); }
.site-nav a.is-current {
  background: var(--gold);
  color: #1a1406;
}

.hero {
  background:
    linear-gradient(115deg, rgba(18,35,63,0.92), rgba(26,54,93,0.82)),
    #1a365d;
  color: #f8f3e8;
  padding: 56px 0 48px;
}
.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px;
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 36px;
  align-items: start;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: 34px;
  line-height: 1.3;
}
.hero p { margin: 0 0 14px; color: #efe6d2; }
.hero-points {
  margin: 18px 0 22px;
  padding-left: 20px;
}
.hero-points li { margin: 6px 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  text-decoration: none;
  border-radius: 2px;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 15px;
}
.btn-primary { background: var(--gold); color: #1a1406; }
.btn-ghost { background: transparent; color: #f8f3e8; border: 1px solid #d6c7a1; }
.btn-win { background: #1f6b4a; color: #fff; }
.btn-mac { background: #2c3e50; color: #fff; }
.btn-ios { background: #3b4a6b; color: #fff; }
.btn-and { background: #3d6b3a; color: #fff; }
.download-panel {
  background: #fff;
  color: var(--ink);
  padding: 22px;
  border-top: 5px solid var(--gold);
}
.download-panel h2 {
  margin: 0 0 10px;
  font-size: 20px;
}
.platform-note { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
.panel-links { display: grid; gap: 8px; }

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 36px 22px 64px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 36px;
}
.article h2 {
  margin: 42px 0 14px;
  padding: 8px 0 8px 14px;
  border-left: 5px solid var(--gold);
  color: var(--navy);
  font-size: 24px;
}
.article p { margin: 0 0 14px; font-size: 17px; }
.article ul, .article ol { margin: 0 0 16px; padding-left: 22px; }
.article li { margin: 6px 0; }
.note {
  background: #fff8e6;
  border: 1px solid #e6d3a3;
  padding: 14px 16px;
  margin: 16px 0;
}
.scene-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  margin: 16px 0 22px;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 15px;
}
.scene-table th, .scene-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.scene-table th { background: var(--navy); color: #f7f3ea; }
.mid-cta, .end-cta {
  background: #fff;
  border: 1px solid var(--line);
  padding: 20px;
  margin: 28px 0;
}
.mid-cta .btn, .end-cta .btn { margin: 6px 6px 0 0; }
.faq-item { margin: 0 0 18px; padding-bottom: 12px; border-bottom: 1px dashed var(--line); }
.faq-item h3 { margin: 0 0 8px; font-size: 18px; color: var(--navy); }
.toc {
  position: sticky;
  top: 96px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 16px;
}
.toc h2 { margin: 0 0 10px; font-size: 16px; color: var(--navy); border: 0; padding: 0; }
.toc a { display: block; color: var(--link); text-decoration: none; padding: 5px 0; font-size: 14px; font-family: "Microsoft YaHei", sans-serif; }
.toc a:hover { text-decoration: underline; }

.site-footer {
  background: var(--navy-deep);
  color: #d9d0be;
  padding: 28px 22px 36px;
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 14px;
}
.footer-inner { max-width: 1180px; margin: 0 auto; }
.footer-verify { color: #f3e6b8; margin-bottom: 8px; }

@media (max-width: 960px) {
  .hero-inner, .wrap { grid-template-columns: 1fr; }
  .toc { position: static; }
  .nav-toggle { display: inline-block; }
  .site-nav { display: none; flex-direction: column; position: absolute; right: 16px; top: 76px; background: #163155; padding: 10px; }
  .site-nav.is-open { display: flex; }
}