/* Set 1: corporate two-column, blue, serif headings */
:root {
  --ink: #16324f;
  --muted: #4a6074;
  --line: #c5d4e4;
  --paper: #ffffff;
  --wash: #eef4fb;
  --band: #d7e6f6;
  --brand: #1a56b0;
  --brand-dark: #123e80;
  --cta: #0d6b3d;
  --cta-dark: #08502d;
}
* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--wash);
  font: 16px/1.75 "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}
img, svg { max-width: 100%; }
a { color: var(--brand); }
.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  background: var(--paper);
  border-bottom: 3px solid var(--brand);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: Georgia, "Times New Roman", "SimSun", serif;
  font-size: 22px;
  font-weight: 700;
}
.brand svg { display: block; }
.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav a {
  text-decoration: none;
  color: var(--ink);
  padding: 8px 14px;
  border: 1px solid transparent;
}
.nav a.current {
  background: var(--brand);
  color: #fff;
}
.hero {
  background: linear-gradient(90deg, #f7fbff 0%, #dceaf8 100%);
  border-bottom: 1px solid var(--line);
  padding: 36px 0 40px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: start;
}
h1, h2, h3 { font-family: Georgia, "Times New Roman", "SimSun", serif; line-height: 1.35; }
h1 { font-size: 32px; margin: 0 0 14px; }
h2 { font-size: 24px; margin: 0 0 12px; color: var(--brand-dark); }
h3 { font-size: 18px; margin: 16px 0 8px; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 18px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 4px;
  font-weight: 700;
}
.btn-win { background: var(--cta); color: #fff; }
.btn-win:hover { background: var(--cta-dark); }
.btn-mac { background: var(--brand); color: #fff; }
.btn-ios, .btn-and { background: #fff; color: var(--brand-dark); border: 1px solid var(--brand); }
.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 18px 18px 8px;
}
.pills { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 0; padding: 0; list-style: none; }
.pills li {
  border: 1px solid var(--line);
  background: #fff;
  padding: 10px 12px;
  display: flex;
  gap: 8px;
  align-items: center;
}
section.block { padding: 36px 0; }
section.block.alt { background: var(--paper); }
section.block.soft { background: var(--band); }
.cols-4, .cols-3, .cols-2 { display: grid; gap: 16px; }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-2 { grid-template-columns: 1fr 1fr; }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 16px;
}
.card h3 { margin-top: 8px; }
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
th, td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
th { background: #1a56b0; color: #fff; }
.quotes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
blockquote {
  margin: 0;
  background: #fff;
  border-left: 4px solid var(--brand);
  padding: 12px 16px;
}
.faq dt { font-weight: 700; margin-top: 16px; }
.faq dd { margin: 6px 0 0; color: var(--muted); }
.site-footer {
  background: #12233a;
  color: #d5deea;
  padding: 28px 0 20px;
}
.site-footer a { color: #d5deea; text-decoration: none; }
.foot-nav { display: flex; gap: 16px; margin: 10px 0 16px; }
.fine { font-size: 13px; line-height: 1.7; color: #b7c4d4; }
@media (max-width: 860px) {
  .hero-grid, .cols-4, .cols-3, .cols-2, .quotes { grid-template-columns: 1fr; }
  .header-inner { flex-direction: column; align-items: flex-start; padding: 12px 0; }
}