/* Set 1 — root: centered red corporate, 3-column cards */
:root {
  --red: #c8161d;
  --red-dark: #9f1016;
  --ink: #1f2328;
  --muted: #5c6570;
  --line: #e6e8eb;
  --bg: #f6f7f8;
  --card: #ffffff;
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font: 16px/1.75 "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { color: var(--red); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
}
.brand svg { display: block; }
.nav { display: flex; gap: 8px; }
.nav a {
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 8px;
  text-decoration: none;
}
.nav a.is-current {
  background: var(--red);
  color: #fff;
}
.hero {
  padding: 56px 0 48px;
  text-align: center;
  background: linear-gradient(180deg, #fff5f5 0%, #fff 70%);
}
.hero h1 {
  margin: 0 0 16px;
  font-size: 34px;
  line-height: 1.3;
}
.hero .lead { max-width: 760px; margin: 0 auto 28px; color: var(--muted); font-size: 18px; }
.btn-row { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 10px;
  font-weight: 700;
  text-decoration: none !important;
  border: 2px solid transparent;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); }
.btn-ghost { background: #fff; color: var(--red); border-color: var(--red); }
.section { padding: 56px 0; }
.section.alt { background: var(--bg); }
.section h2 { margin: 0 0 12px; font-size: 26px; }
.section .intro { color: var(--muted); margin: 0 0 28px; }
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.cards-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  box-shadow: 0 6px 18px rgba(31, 35, 40, 0.04);
}
.card h3 { margin: 12px 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }
.icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #fff1f1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.icon-box svg { width: 24px; height: 24px; }
.compare {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
.compare th, .compare td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
}
.compare th { background: #fff1f1; }
.quote-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
blockquote.card { margin: 0; }
.faq-list { display: grid; gap: 14px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
}
.faq-item h3 { margin: 0 0 8px; font-size: 17px; }
.faq-item p { margin: 0 0 8px; color: var(--muted); }
.faq-item p:last-child { margin-bottom: 0; }
.dl-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  text-align: center;
}
.platform-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.steps { counter-reset: step; display: grid; gap: 14px; }
.step {
  background: #fff;
  border-radius: 10px;
  padding: 16px 18px 16px 64px;
  position: relative;
  border: 1px solid var(--line);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.article p { margin: 0 0 16px; }
.cta-band {
  background: var(--red);
  color: #fff;
  padding: 36px 0;
  text-align: center;
}
.cta-band h2, .cta-band p { color: #fff; }
.cta-band .btn-primary { background: #fff; color: var(--red); }
.site-footer {
  background: #1f2328;
  color: #c9ced4;
  padding: 36px 0 28px;
  font-size: 14px;
}
.site-footer .brand { color: #fff; margin-bottom: 16px; }
.foot-nav { display: flex; gap: 16px; margin: 12px 0 18px; }
.foot-nav a { color: #fff; }
.foot-note { margin: 8px 0; color: #aeb5bd; }
@media (max-width: 900px) {
  .cards-3, .cards-4, .quote-grid, .platform-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 26px; }
  .header-inner { flex-direction: column; padding: 12px 0; }
}