*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #f7f5ef;
  --surface: #ffffff;
  --ink: #17201c;
  --muted: #687169;
  --line: #ddd8cb;
  --accent: #0f6b5f;
  --accent-soft: #e7f0ed;
  --gold: #a47b35;
  --max: 1080px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

html[data-lang="en"] .lang-zh {
  display: none;
}

html[data-lang="zh"] .lang-en {
  display: none;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC",
    "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.brand-name {
  display: block;
  font-size: 16px;
  font-weight: 700;
}

.brand-sub {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted);
}

.nav-row {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.nav-menu a.active,
.nav-menu a:hover {
  color: var(--ink);
}

#lang-toggle {
  min-width: 58px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

.hero {
  padding: 76px 0 48px;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(320px, 0.9fr);
  gap: 48px;
  align-items: start;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: 44px;
  line-height: 1.12;
}

.lead {
  max-width: 720px;
  margin-bottom: 24px;
  color: #3d463f;
  font-size: 18px;
}

.notice {
  max-width: 720px;
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  color: #263a35;
  font-size: 15px;
}

.facts-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

.facts-panel h2 {
  margin-bottom: 16px;
  font-size: 18px;
}

.fact-list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.fact-list div {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.fact-list div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.fact-list dt {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.fact-list dd {
  margin: 0;
  color: var(--ink);
  font-size: 15px;
}

.section {
  padding: 56px 0;
}

.section-header {
  max-width: 720px;
  margin-bottom: 28px;
}

.section-header h2 {
  margin-bottom: 10px;
  font-size: 28px;
}

.section-header p {
  color: var(--muted);
}

.three-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.info-box {
  min-height: 190px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.info-box .num {
  display: inline-flex;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
}

.info-box h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.info-box p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

tr:last-child th,
tr:last-child td {
  border-bottom: 0;
}

th {
  width: 220px;
  color: var(--muted);
  font-size: 13px;
}

td {
  color: var(--ink);
  font-size: 15px;
}

.page-title {
  padding: 56px 0 36px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.page-title h1 {
  margin-bottom: 12px;
  font-size: 38px;
}

.page-title p,
.updated {
  max-width: 700px;
  color: var(--muted);
}

.content {
  padding: 48px 0 64px;
}

.prose {
  max-width: 780px;
}

.prose h2 {
  margin: 36px 0 12px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-size: 23px;
}

.prose h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.prose p,
.prose li {
  color: #39413b;
  font-size: 16px;
}

.prose ul,
.prose ol {
  padding-left: 22px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.contact-card {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contact-card h2 {
  margin-bottom: 8px;
  font-size: 18px;
}

.contact-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.site-footer {
  padding: 42px 0 28px;
  background: #17201c;
  color: #d9ddd8;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.footer-grid h2,
.footer-grid h3 {
  margin-bottom: 12px;
  color: #ffffff;
  font-size: 16px;
}

.footer-grid p,
.footer-grid li {
  color: #c3c9c2;
  font-size: 14px;
}

.footer-grid ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-grid li {
  margin-bottom: 8px;
}

.footer-grid a {
  color: #e6ebe6;
}

.footer-bottom {
  padding-top: 22px;
  color: #aab2aa;
  font-size: 13px;
}

@media (max-width: 860px) {
  .header-inner,
  .nav-row {
    align-items: flex-start;
  }

  .header-inner {
    flex-direction: column;
    padding: 18px 0;
  }

  .nav-row {
    width: 100%;
    justify-content: space-between;
  }

  .nav-menu {
    flex-wrap: wrap;
    gap: 10px 14px;
  }

  .hero-grid,
  .three-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 34px;
  }

  .page-title h1 {
    font-size: 32px;
  }

  th,
  td {
    display: block;
    width: 100%;
  }

  th {
    padding-bottom: 4px;
    border-bottom: 0;
  }

  td {
    padding-top: 0;
  }
}