:root {
  color-scheme: light;
  --ink: #1e252c;
  --muted: #5d6874;
  --line: #d9e0e7;
  --paper: #fffdf9;
  --soft: #f4f7f2;
  --accent: #b33a2f;
  --green: #34745b;
  --gold: #a46b18;
  --blue: #235789;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
}
a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 253, 249, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  min-width: 180px;
}
.brand strong { font-size: 18px; line-height: 1.2; }
.brand span { font-size: 12px; color: var(--muted); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
}
.nav-links a { text-decoration: none; color: var(--muted); }
.nav-links a:hover { color: var(--accent); }
.hero {
  min-height: 72vh;
  display: grid;
  align-items: end;
  position: relative;
  background: #111;
  overflow: hidden;
}
.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .62;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(12,18,24,.74), rgba(12,18,24,.28) 58%, rgba(12,18,24,.1));
}
.hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 0 22px 58px;
  color: #fff;
}
.hero h1 {
  max-width: 820px;
  margin: 0 0 16px;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.05;
  letter-spacing: 0;
}
.hero p {
  max-width: 760px;
  margin: 0;
  font-size: 18px;
  color: rgba(255,255,255,.88);
}
.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.facts span {
  border: 1px solid rgba(255,255,255,.32);
  background: rgba(255,255,255,.12);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
}
.band {
  padding: 58px 22px;
}
.band.alt { background: var(--soft); }
.inner {
  max-width: 1180px;
  margin: 0 auto;
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 24px;
}
.eyebrow {
  color: var(--gold);
  font-weight: 700;
  font-size: 13px;
}
h2 {
  margin: 4px 0 0;
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: 0;
}
h3 { margin: 0 0 8px; font-size: 20px; line-height: 1.35; }
.lead { color: var(--muted); max-width: 720px; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 18px;
}
.card p { margin: 0; color: var(--muted); }
.card a { color: var(--blue); font-weight: 700; text-decoration: none; }
.split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 28px;
  align-items: center;
}
.split img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
}
.list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.list li {
  border-left: 4px solid var(--green);
  padding-left: 12px;
}
.list b { display: block; }
.list span { color: var(--muted); }
.faq {
  display: grid;
  gap: 12px;
}
.faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 14px 16px;
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
}
.faq p { color: var(--muted); margin-bottom: 0; }
.cta {
  background: #1f2b24;
  color: #fff;
  padding: 46px 22px;
}
.cta .inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.cta p { color: rgba(255,255,255,.76); margin: 6px 0 0; }
.cta-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.button {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  border-radius: 6px;
  padding: 0 14px;
  background: #fff;
  color: #1f2b24;
  text-decoration: none;
  font-weight: 700;
}
.button.secondary {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.38);
}
.footer {
  padding: 24px 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.footer .inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.article {
  max-width: 860px;
  margin: 0 auto;
  padding: 54px 22px;
}
.article h1 {
  font-size: 40px;
  line-height: 1.2;
  margin: 0 0 16px;
  letter-spacing: 0;
}
.article .meta { color: var(--muted); margin-bottom: 24px; }
.article img {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  border-radius: 8px;
  margin: 8px 0 24px;
}
.article h2 { margin-top: 34px; }
.article p, .article li { color: #374151; }
.article ul { padding-left: 20px; }
.article table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 15px;
}
.article th,
.article td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.article th {
  background: var(--soft);
  color: var(--ink);
}
.breadcrumbs {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 18px;
}
.breadcrumbs a { color: var(--blue); text-decoration: none; }
@media (max-width: 820px) {
  .nav { align-items: flex-start; }
  .nav-links { justify-content: flex-end; gap: 10px; }
  .hero { min-height: 66vh; }
  .hero-content { padding-bottom: 36px; }
  .grid, .split { grid-template-columns: 1fr; }
  .section-head, .cta .inner { align-items: flex-start; flex-direction: column; }
  .article h1 { font-size: 32px; }
}