:root {
  --bg-page: #f5f1ea;
  --bg-accent:
    radial-gradient(circle at top left, rgba(76, 132, 110, 0.12), transparent 34%),
    radial-gradient(circle at top right, rgba(201, 133, 77, 0.14), transparent 32%);
  --surface-primary: rgba(255, 255, 255, 0.92);
  --surface-secondary: rgba(250, 246, 240, 0.96);
  --surface-muted: rgba(244, 239, 231, 0.96);
  --border-soft: rgba(73, 60, 48, 0.10);
  --border-strong: rgba(73, 60, 48, 0.16);
  --text-primary: #2c2723;
  --text-secondary: #61574d;
  --text-tertiary: #897d72;
  --brand-primary: #cb7a48;
  --brand-primary-deep: #a85d32;
  --accent-green: #557d67;
  --info-soft: rgba(85, 125, 103, 0.13);
  --warning-soft: rgba(203, 122, 72, 0.13);
  --shadow-card: 0 12px 28px rgba(61, 44, 30, 0.06);
  --shadow-hero: 0 18px 42px rgba(61, 44, 30, 0.09);
  --radius-card: 24px;
  --radius-soft: 16px;
  --radius-pill: 999px;
  --max-width: 1120px;
  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
  --space-8: 52px;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-accent), var(--bg-page);
  line-height: 1.75;
}

a {
  color: inherit;
}

.site-shell {
  width: min(calc(100% - 24px), var(--max-width));
  margin: 0 auto;
  padding: var(--space-5) 0 56px;
}

.topbar,
.hero,
.document-panel,
.footer-card,
.notice,
.card-link {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background: var(--surface-primary);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
}

.topbar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  padding: var(--space-4);
}

.topbar-group,
.topbar-actions,
.page-nav,
.meta-grid,
.hero-actions,
.card-grid,
.link-row,
.document-meta,
.language-switcher {
  display: flex;
  flex-wrap: wrap;
}

.topbar-group {
  gap: var(--space-3);
}

.topbar-actions,
.page-nav,
.hero-actions,
.link-row,
.document-meta,
.language-switcher {
  gap: var(--space-2);
}

.meta-grid,
.card-grid {
  gap: var(--space-4);
}

.brand-mark,
.nav-link,
.button-link,
.card-link {
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  min-height: 36px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), #e5ab7b);
  box-shadow: 0 0 0 6px rgba(203, 122, 72, 0.12);
}

.page-nav {
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

.page-nav::-webkit-scrollbar {
  display: none;
}

.nav-link,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.88);
  font-size: 14px;
  font-weight: 600;
}

.language-switcher {
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  background: transparent;
  border-color: transparent;
}

.nav-link:hover,
.button-link:hover,
.card-link:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.nav-link.is-active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.92);
  border-color: var(--border-soft);
}

.button-link.primary {
  color: #fff;
  border-color: rgba(168, 93, 50, 0.10);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-deep));
  box-shadow: 0 12px 26px rgba(168, 93, 50, 0.22);
}

.button-link.is-active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.98);
  border-color: var(--border-strong);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.45);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 6vw, 40px);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-hero);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 245, 235, 0.92), rgba(255, 255, 255, 0.18));
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.72);
  color: var(--accent-green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
strong {
  letter-spacing: -0.02em;
}

h1 {
  margin: var(--space-4) 0 var(--space-3);
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.08;
}

h2 {
  margin: var(--space-6) 0 var(--space-3);
  font-size: clamp(22px, 3vw, 28px);
}

h3 {
  margin: 0 0 var(--space-2);
  font-size: 18px;
}

p,
li {
  color: var(--text-secondary);
}

.meta-item,
.document-meta span {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  min-width: 160px;
  padding: 14px 16px;
  border-radius: var(--radius-soft);
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid rgba(73, 60, 48, 0.08);
}

.meta-item strong {
  font-size: 12px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.section-heading {
  margin: 0 0 var(--space-4);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: var(--space-5);
}

.card-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: 22px;
}

.eyebrow {
  color: var(--accent-green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.notice {
  margin: var(--space-5) 0 0;
  padding: 18px 20px;
}

.notice.info {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), var(--info-soft));
}

.notice.warning {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), var(--warning-soft));
}

.document-panel {
  padding: clamp(22px, 5vw, 36px);
}

.document-header {
  padding-bottom: var(--space-5);
  border-bottom: 1px solid rgba(73, 60, 48, 0.08);
}

.document-copy {
  max-width: 760px;
}

.document-copy ol,
.document-copy ul {
  padding-left: 20px;
}

.footer-card {
  margin-top: var(--space-5);
  padding: 22px;
}

.link-cluster {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(73, 60, 48, 0.08);
}

.page-footer {
  margin-top: var(--space-6);
  color: var(--text-tertiary);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 720px) {
  .site-shell {
    width: min(calc(100% - 20px), var(--max-width));
    padding-top: 12px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .meta-item,
  .document-meta span {
    min-width: 100%;
  }

  h1 {
    font-size: 34px;
  }
}