:root {
  --bg: #f3f5f7;
  --panel: #ffffff;
  --ink: #15202b;
  --muted: #5c6b7a;
  --line: #c5ced6;
  --accent: #1a5f7a;
  --accent-hover: #13485c;
  --price: #0d3b4c;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
}
a { color: var(--accent); }
header {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}
.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  padding: 16px 0;
}
.brand {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 14px;
}
nav a {
  color: var(--muted);
  text-decoration: none;
}
nav a:hover,
nav a.active {
  color: var(--accent);
  font-weight: 600;
}
.hero { padding: 36px 0 8px; }
h1 {
  font-size: 26px;
  line-height: 1.35;
  margin: 0 0 14px;
  font-weight: 700;
}
.lead {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 28px 0 8px;
}
article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px 22px 20px;
}
article h2 {
  margin: 0 0 6px;
  font-size: 18px;
}
.price {
  font-size: 32px;
  font-weight: 700;
  color: var(--price);
  letter-spacing: -0.02em;
  margin: 10px 0 12px;
}
.price small {
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  margin-left: 4px;
}
article ul {
  margin: 0;
  padding-left: 18px;
  color: var(--ink);
}
.block {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 22px;
  margin: 16px 0;
}
.block h2 {
  margin: 0 0 10px;
  font-size: 16px;
}
.block p, .block li { margin: 0 0 6px; }
.block ul { margin: 0; padding-left: 18px; }
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  margin: 8px 0 36px;
}
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 6px;
  font-weight: 600;
}
.btn:hover { background: var(--accent-hover); }
.email { font-size: 15px; }
footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 32px;
  color: var(--muted);
  font-size: 13px;
}
footer p { margin: 0 0 6px; }
footer a { color: var(--muted); }
@media (max-width: 700px) {
  h1 { font-size: 22px; }
  .grid { grid-template-columns: 1fr; }
  .price { font-size: 28px; }
}