:root {
  --bg: #f5f1e8;
  --paper: rgba(255, 255, 255, 0.82);
  --paper-strong: #fffdf9;
  --ink: #172033;
  --muted: #596274;
  --line: rgba(23, 32, 51, 0.12);
  --accent: #a67c37;
  --accent-soft: rgba(166, 124, 55, 0.14);
  --shadow: 0 24px 60px rgba(31, 41, 55, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --content-width: 1180px;
  --body-font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --display-font: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--body-font);
  line-height: 1.7;
  background:
    radial-gradient(circle at top left, rgba(166, 124, 55, 0.18), transparent 24%),
    radial-gradient(circle at right 20%, rgba(15, 23, 42, 0.08), transparent 24%),
    linear-gradient(180deg, #f7f3eb 0%, #f0ebdf 100%);
  min-height: 100vh;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.22) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 80%);
  pointer-events: none;
}

a {
  color: inherit;
}

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

ul {
  margin: 0;
  padding-left: 20px;
}

.site-shell {
  width: min(calc(100% - 40px), var(--content-width));
  margin: 24px auto 40px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 22px;
  background: rgba(255, 253, 249, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 16px;
  z-index: 10;
}

.brand-mark {
  font-family: var(--display-font);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-nav a {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  transition: all 0.2s ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
  background: rgba(23, 32, 51, 0.06);
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 24px;
  margin-top: 28px;
  padding: 44px;
  border-radius: 40px;
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(32, 45, 66, 0.9)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent);
  color: #f8f6f1;
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.hero::after {
  position: absolute;
  inset: auto -80px -120px auto;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  content: "";
  background: radial-gradient(circle, rgba(166, 124, 55, 0.38), transparent 70%);
}

.eyebrow,
.section-kicker,
.sidebar-kicker,
.panel-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow,
.panel-badge {
  color: #e8d7b4;
}

.hero h1,
.section-heading h2,
.document-sidebar h1,
.document-card h2 {
  font-family: var(--display-font);
  letter-spacing: -0.02em;
}

.hero h1 {
  margin: 18px 0 18px;
  font-size: clamp(2.8rem, 5vw, 4.8rem);
  line-height: 0.95;
  max-width: 10ch;
}

.hero-text {
  max-width: 58ch;
  color: rgba(248, 246, 241, 0.82);
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(180deg, #d4b06b, #a67c37);
  color: #111827;
  box-shadow: 0 14px 30px rgba(166, 124, 55, 0.3);
}

.button-secondary {
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #f8f6f1;
  background: rgba(255, 255, 255, 0.06);
}

.hero-panel,
.feature-card,
.spotlight-card,
.link-card,
.document-card,
.document-sidebar,
.site-footer {
  border: 1px solid rgba(255, 255, 255, 0.64);
  background: var(--paper);
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

.hero-panel {
  align-self: end;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.08);
}

.info-grid {
  display: grid;
  gap: 16px;
  margin: 18px 0 0;
}

.info-grid dt {
  margin-bottom: 6px;
  font-size: 0.82rem;
  color: rgba(248, 246, 241, 0.7);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.info-grid dd {
  margin: 0;
  font-size: 1rem;
  color: #fff;
}

.content-section {
  margin-top: 28px;
  padding: 32px;
  border-radius: 32px;
  background: rgba(255, 252, 246, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.68);
  box-shadow: 0 18px 46px rgba(31, 41, 55, 0.06);
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 22px;
}

.section-kicker,
.sidebar-kicker {
  color: var(--accent);
  font-weight: 700;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.05;
}

.card-grid,
.spotlight-grid,
.link-cards,
.faq-list {
  display: grid;
  gap: 16px;
}

.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.spotlight-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.spotlight-card,
.link-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  text-decoration: none;
}

.feature-card h3,
.spotlight-card h3,
.faq-item h3,
.link-card strong {
  margin: 0 0 10px;
  color: var(--ink);
}

.spotlight {
  background:
    linear-gradient(180deg, rgba(15, 23, 42, 0.04), rgba(255, 255, 255, 0.42)),
    rgba(255, 252, 246, 0.72);
}

.spotlight-card a,
.document-card a,
.footer-links a {
  color: #805c1f;
}

.link-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.link-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 180px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.link-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 40px rgba(15, 23, 42, 0.1);
}

.link-card-static {
  cursor: default;
}

.faq-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.faq-item {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.faq-item:first-child {
  border-top: none;
  padding-top: 0;
}

.document-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 24px;
  margin-top: 28px;
}

.document-sidebar,
.document-card {
  border-radius: 32px;
}

.document-sidebar {
  position: sticky;
  top: 104px;
  height: fit-content;
  padding: 28px;
}

.document-sidebar h1 {
  margin: 8px 0 10px;
  font-size: 2.4rem;
  line-height: 1;
}

.sidebar-meta {
  margin-bottom: 22px;
}

.document-sidebar nav {
  display: grid;
  gap: 8px;
}

.document-sidebar nav a {
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--muted);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.document-sidebar nav a:hover {
  color: var(--ink);
  background: rgba(23, 32, 51, 0.05);
}

.document-card {
  padding: 34px;
  background: rgba(255, 253, 249, 0.88);
}

.document-card section + section {
  margin-top: 34px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.document-card h2 {
  margin: 0 0 14px;
  font-size: 2rem;
  line-height: 1.08;
}

.document-note {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: #6b4d17;
}

.site-footer {
  display: grid;
  grid-template-columns: 1.2fr auto;
  gap: 20px;
  margin-top: 28px;
  padding: 28px;
  border-radius: 28px;
  background: rgba(255, 253, 249, 0.84);
}

.site-footer p {
  margin: 6px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

.footer-links a {
  text-decoration: none;
}

.footer-meta {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}

.is-placeholder {
  opacity: 0.86;
}

@media (max-width: 980px) {
  .site-header,
  .hero,
  .document-layout,
  .site-footer,
  .card-grid,
  .spotlight-grid,
  .link-cards,
  .faq-list {
    grid-template-columns: 1fr;
  }

  .site-header {
    border-radius: 28px;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav a {
    flex: 1 1 auto;
    text-align: center;
  }

  .document-sidebar {
    position: static;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

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

  .site-header,
  .hero,
  .content-section,
  .document-sidebar,
  .document-card,
  .site-footer {
    padding: 20px;
    border-radius: 24px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.3rem, 12vw, 3.4rem);
  }

  .section-heading h2,
  .document-card h2 {
    font-size: 1.7rem;
  }
}