:root {
  color-scheme: light;
  --navy: #092643;
  --teal: #0b7b72;
  --mint: #e8f7f3;
  --orange: #d87a00;
  --ink: #132d49;
  --muted: #64788d;
  --line: #dce7ee;
  --paper: #f5f8fa;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.topbar { background: var(--navy); color: #fff; }
.topbar-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { font-size: 24px; font-weight: 900; text-decoration: none; letter-spacing: .04em; }
.brand small { display: block; color: #a8ddd3; font-size: 11px; letter-spacing: .1em; }
.nav { display: flex; flex-wrap: wrap; gap: 22px; font-size: 14px; }
.nav a { color: #dce9f4; text-decoration: none; }
.nav a:hover { color: #fff; }
.hero {
  padding: 72px 0 52px;
  background:
    radial-gradient(circle at 82% 18%, rgba(19, 156, 145, .19), transparent 30%),
    linear-gradient(145deg, #f9fcfd, #edf5f6);
  border-bottom: 1px solid var(--line);
}
.eyebrow { margin: 0 0 10px; color: var(--teal); font-size: 14px; font-weight: 800; }
h1 { max-width: 900px; margin: 0; font-size: clamp(36px, 6vw, 64px); line-height: 1.1; letter-spacing: -.04em; }
.lead { max-width: 820px; margin: 22px 0 0; color: var(--muted); font-size: 18px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid var(--teal);
  border-radius: 10px;
  color: #fff;
  background: var(--teal);
  font-weight: 800;
  text-decoration: none;
}
.button.secondary { color: var(--teal); background: #fff; }
.section { padding: 52px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.section h2 { margin: 0; font-size: clamp(26px, 4vw, 40px); line-height: 1.2; }
.section-note { max-width: 720px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 48, 72, .06);
}
.card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #eef3f5; }
.card-body { padding: 20px; }
.card h2, .card h3 { margin: 0 0 8px; font-size: 20px; line-height: 1.35; }
.card p { margin: 0; color: var(--muted); }
.meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.meta span { padding: 5px 9px; border-radius: 999px; color: #17665f; background: var(--mint); font-size: 12px; }
.price { color: var(--orange); font-size: 22px; font-weight: 900; }
.text-link { display: inline-block; margin-top: 14px; color: var(--teal); font-weight: 800; text-decoration: none; }
.prose {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}
.prose h2 { margin-top: 1.5em; font-size: 26px; }
.prose h2:first-child { margin-top: 0; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { border: 1px solid var(--line); border-radius: 14px; background: #fff; padding: 18px 20px; }
.faq-list summary { cursor: pointer; font-weight: 850; }
.faq-list p { margin: 12px 0 0; color: var(--muted); }
.breadcrumbs { padding: 16px 0; color: var(--muted); font-size: 13px; }
.breadcrumbs a { color: var(--teal); }
.footer { margin-top: 30px; padding: 34px 0; color: #c7d5e1; background: var(--navy); }
.footer strong { color: #fff; }
.footer a { color: #fff; }

@media (max-width: 820px) {
  .topbar-inner, .section-head { align-items: flex-start; flex-direction: column; }
  .topbar-inner { padding: 16px 0; }
  .nav { gap: 12px 18px; }
  .hero { padding-top: 46px; }
  .grid { grid-template-columns: 1fr; }
}