* {
  box-sizing: border-box;
}

:root {
  --bg: #fffaf3;
  --surface: #ffffff;
  --surface-soft: #fff7ed;
  --text-main: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --line: #e7e5e0;
  --brand: #d97706;
  --brand-deep: #b45309;
  --brand-soft: rgba(217, 119, 6, 0.08);
  --shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  --shadow-soft: 0 14px 28px rgba(15, 23, 42, 0.06);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at top right, rgba(217, 119, 6, 0.08), transparent 28%),
    linear-gradient(180deg, #fffdf9 0%, var(--bg) 100%);
}

a {
  color: inherit;
}

.page-shell {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #1e293b;
  border-bottom: 1px solid rgba(217, 119, 6, 0.2);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.site-header-inner {
  width: min(1200px, calc(100% - 40px));
  height: 60px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
  text-decoration: none;
}

.site-logo-text {
  margin: 0;
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.site-logo-accent {
  color: var(--brand);
}

.site-logo-desc {
  color: rgba(203, 213, 225, 0.82);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav-link {
  padding: 8px 10px;
  border-bottom: 2px solid transparent;
  color: rgba(203, 213, 225, 0.85);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav-link:hover,
.site-nav-link.is-active {
  color: #ffffff;
  border-bottom-color: var(--brand);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 20px 56px;
  border-bottom: 1px solid rgba(217, 119, 6, 0.12);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(217, 119, 6, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(217, 119, 6, 0.08) 1px, transparent 1px);
  background-size: 54px 54px;
  opacity: 0.35;
  pointer-events: none;
}

.hero-inner,
.section-inner,
.footer-inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 247, 237, 0.95);
  border: 1px solid rgba(217, 119, 6, 0.18);
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.hero h1 {
  margin: 20px 0 16px;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 860px;
  margin: 0;
  font-size: 18px;
  line-height: 1.9;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 10px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, #f59e0b 100%);
  box-shadow: 0 16px 30px rgba(217, 119, 6, 0.24);
}

.btn-secondary {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(30, 41, 59, 0.12);
}

.btn-ghost {
  color: var(--brand-deep);
  background: rgba(255, 247, 237, 0.9);
  border: 1px solid rgba(217, 119, 6, 0.16);
}

.hero-note {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.8;
}

.section {
  padding: 26px 20px 0;
}

.section-card {
  padding: 0 0 34px;
}

.section-card + .section-card {
  margin-top: 10px;
}

.section h2 {
  margin: 0 0 16px;
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.section p,
.section li {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.95;
}

.section p {
  margin: 0 0 14px;
}

.section ul,
.section ol {
  margin: 10px 0 0;
  padding-left: 22px;
}

.section li + li {
  margin-top: 10px;
}

.highlight {
  color: var(--brand-deep);
  font-weight: 700;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.info-card,
.compare-card,
.cta-card,
.nav-card {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(217, 119, 6, 0.12);
  box-shadow: var(--shadow-soft);
}

.info-card {
  padding: 22px 22px 20px;
}

.info-card h3,
.compare-card h3,
.cta-card h3,
.nav-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

.info-card p:last-child,
.compare-card p:last-child,
.cta-card p:last-child,
.nav-card p:last-child {
  margin-bottom: 0;
}

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

.topic-index-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 22px 20px;
  border-radius: 18px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(217, 119, 6, 0.12);
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.topic-index-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(217, 119, 6, 0.22);
}

.topic-index-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.topic-index-kicker {
  color: var(--brand);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.topic-index-arrow {
  color: var(--brand-deep);
  font-size: 18px;
  font-weight: 700;
}

.topic-index-card h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.35;
}

.topic-index-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
}

.topic-index-link {
  margin-top: auto;
  color: var(--brand-deep);
  font-size: 14px;
  font-weight: 700;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.compare-card {
  overflow: hidden;
}

.compare-media {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  background: #0f172a;
}

.compare-media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 180px;
  object-fit: cover;
  background: #0f172a;
}

.compare-copy {
  padding: 18px 20px 20px;
}

.compare-labels {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--brand);
}

.quote {
  margin-top: 18px;
  padding: 18px 20px;
  border-left: 4px solid var(--brand);
  border-radius: 0 14px 14px 0;
  background: linear-gradient(135deg, rgba(255, 247, 237, 0.96) 0%, rgba(255, 255, 255, 0.92) 100%);
}

.quote p {
  margin: 0;
}

.meta-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(217, 119, 6, 0.12);
  border-radius: 14px;
  overflow: hidden;
}

.meta-table th,
.meta-table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(231, 229, 224, 0.9);
  vertical-align: top;
}

.meta-table th {
  width: 180px;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 800;
  background: rgba(255, 247, 237, 0.82);
}

.meta-table td {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.meta-table tr:last-child th,
.meta-table tr:last-child td {
  border-bottom: none;
}

.cta-block {
  padding: 14px 0 44px;
}

.cta-card {
  padding: 28px 28px 26px;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.98) 0%, rgba(15, 23, 42, 0.98) 100%);
  color: #fff;
  box-shadow: var(--shadow);
}

.cta-card p,
.cta-card li {
  color: rgba(226, 232, 240, 0.9);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 22px;
}

.footer {
  padding: 0 20px 42px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.nav-card {
  padding: 22px 22px 20px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  text-decoration: none;
  background: var(--surface-soft);
  border: 1px solid rgba(217, 119, 6, 0.14);
  color: var(--brand-deep);
  font-size: 14px;
  font-weight: 700;
}

.muted {
  color: var(--text-muted);
}

.site-footer {
  margin-top: auto;
  background: #1e293b;
  color: #94a3b8;
  padding: 32px 20px;
  text-align: center;
}

.site-footer-content {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.site-footer-desc {
  margin: 0;
  font-size: 13px;
}

.site-footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.site-footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s ease;
}

.site-footer-links a:hover {
  color: var(--brand);
}

.site-divider {
  color: #475569;
  font-size: 12px;
}

.site-footer-copyright {
  margin: 0;
  color: #64748b;
  font-size: 12px;
}

.site-icp-filing {
  margin-left: 4px;
}

.site-icp-filing a {
  color: #64748b;
  text-decoration: none;
}

.site-icp-filing a:hover {
  color: var(--brand);
  text-decoration: underline;
}

.site-footer-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  color: rgba(217, 119, 6, 0.72);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.site-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  animation: statusPulse 2s ease-in-out infinite;
}

@media (max-width: 860px) {
  .site-header-inner {
    height: auto;
    min-height: 54px;
    padding: 12px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-logo-desc {
    display: none;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
    gap: 6px 10px;
  }

  .info-grid,
  .compare-grid,
  .topic-index-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .compare-media {
    grid-template-columns: 1fr;
  }

  .compare-media img {
    min-height: 160px;
  }

  .meta-table,
  .meta-table tbody,
  .meta-table tr,
  .meta-table th,
  .meta-table td {
    display: block;
    width: 100%;
  }

  .meta-table tr {
    border-bottom: 1px solid rgba(231, 229, 224, 0.9);
  }

  .meta-table tr:last-child {
    border-bottom: none;
  }

  .meta-table th,
  .meta-table td {
    border-bottom: none;
    padding: 12px 14px;
  }

  .meta-table th {
    padding-bottom: 0;
  }
}

@media (max-width: 640px) {
  .site-header-inner,
  .site-footer-content {
    width: min(1200px, calc(100% - 24px));
  }

  .hero-inner,
  .section-inner,
  .footer-inner {
    width: min(1120px, calc(100% - 24px));
  }

  .hero {
    padding: 72px 12px 44px;
  }

  .section {
    padding: 22px 12px 0;
  }

  .footer {
    padding: 0 12px 28px;
  }

  .site-nav-link {
    padding: 6px 0;
    font-size: 13px;
  }

  .site-footer {
    padding: 24px 12px;
  }

  .site-footer-links {
    gap: 8px;
  }
}