:root {
  --red: #e60012;
  --red-d: #b0000e;
  --ink: #222;
  --gray: #f3f3f3;
  --line: #e2e2e2;
  --blue: #1a5fb4;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background: #fff;
  font-size: 16px;
  line-height: 1.75;
}
a { color: var(--blue); }
a:hover { color: var(--red); }

.util {
  background: #f7f7f7;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: #666;
  padding: 6px 20px;
  text-align: right;
}
.mast {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px 10px;
  border-bottom: 4px solid var(--red);
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--red);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.nav { display: flex; gap: 0; }
.nav a {
  display: inline-block;
  padding: 10px 22px;
  text-decoration: none;
  color: #333;
  background: #fafafa;
  border: 1px solid var(--line);
  border-bottom: none;
  margin-left: -1px;
}
.nav a.is-current {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
}

.hero {
  background: var(--gray);
  border-bottom: 1px solid var(--line);
  padding: 28px 20px 24px;
}
.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 16px;
}
.hero h1 {
  font-size: 26px;
  line-height: 1.4;
  color: #111;
  margin-bottom: 12px;
}
.btn-dl {
  display: inline-block;
  background: var(--red);
  color: #fff;
  text-decoration: none;
  padding: 11px 22px;
  font-weight: 700;
}
.btn-dl:hover { background: var(--red-d); color: #fff; }
.mini-box {
  background: #fff;
  border: 1px solid var(--line);
  padding: 14px;
  font-size: 14px;
}
.mini-box b { display: block; color: var(--red); margin-bottom: 6px; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 28px 20px 56px; }
.block { margin-bottom: 36px; }
.block h2 {
  font-size: 20px;
  border-left: 5px solid var(--red);
  padding-left: 10px;
  margin-bottom: 14px;
}
.block p { margin-bottom: 12px; }
.cols-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}
.card {
  border: 1px solid var(--line);
  padding: 14px 14px 16px;
  background: #fff;
}
.card h3 { font-size: 16px; color: var(--red-d); margin-bottom: 8px; }
table.cmp {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table.cmp th, table.cmp td {
  border: 1px solid var(--line);
  padding: 8px;
  text-align: left;
}
table.cmp th { background: #fff1f1; }
.faq-item { border-bottom: 1px dashed var(--line); padding: 12px 0; }
.faq-item h3 { font-size: 16px; margin-bottom: 6px; }

.site-footer {
  background: #2b2b2b;
  color: #cfcfcf;
  font-size: 13px;
  padding: 24px 20px 32px;
  line-height: 1.7;
}
.site-footer .inner { max-width: 1120px; margin: 0 auto; }
.foot-nav a { color: #ffd0d0; margin-right: 14px; text-decoration: none; }
.site-footer p { margin: 8px 0; }

@media (max-width: 900px) {
  .hero-inner, .cols-3 { grid-template-columns: 1fr; }
  .mast { flex-direction: column; align-items: flex-start; gap: 10px; }
  .nav a { padding: 8px 12px; font-size: 14px; }
}