:root {
  --primary: #0B5E42;
  --primary-dark: #084a33;
  --accent: #C9A84C;
  --accent-light: #E8C34A;
  --bg-deep: #1A2B1F;
  --bg-surface: #2C3E2F;
  --text-primary: #F5F5DC;
  --text-secondary: #A8B5A0;
  --border-color: #5A7A5A;
  --gold: #C9A84C;
  --gold-bright: #E8C34A;
  --font-heading: Georgia, "Noto Serif SC", "宋体", "SimSun", serif;
  --font-body: -apple-system, "Noto Sans SC", "微软雅黑", "PingFang SC", sans-serif;
  --font-accent: "Helvetica Neue", Arial, sans-serif;
  --max-width: 1200px;
  --nav-height: 64px;
  --radius-capsule: 40px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover, a:focus-visible { color: var(--gold-bright); }
:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 2px; }

img, svg, video { max-width: 100%; display: block; }
ul, ol { list-style: none; }
input, button { font-family: inherit; font-size: inherit; border: none; background: none; color: inherit; }

/* ===== Skip Link ===== */
.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  z-index: 10000;
  background: var(--gold-bright);
  color: #1A2B1F;
  padding: 8px 20px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 8px;
}

/* ===== Scroll Progress ===== */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  z-index: 9999;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ===== Capsule Navigation ===== */
.capsule-nav {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9000;
  width: calc(100% - 24px);
  max-width: var(--max-width);
  background: rgba(26, 43, 31, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--gold);
  border-radius: var(--radius-capsule);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  padding: 0 8px;
  transition: background var(--transition), border-color var(--transition);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 16px;
  gap: 12px;
}

.brand-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}
.brand-logo .gold {
  color: var(--gold);
  font-weight: 700;
}
.brand-logo:hover, .brand-logo:focus-visible { color: var(--primary); }
.brand-logo:hover .gold, .brand-logo:focus-visible .gold { color: var(--gold-bright); }

[data-nav] {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
[data-nav]::-webkit-scrollbar { display: none; }

[data-nav] a {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-primary);
  padding: 6px 14px;
  border-radius: 20px;
  white-space: nowrap;
  transition: color var(--transition), background var(--transition);
  position: relative;
}
[data-nav] a:hover,
[data-nav] a:focus-visible {
  color: var(--gold-bright);
  background: rgba(201, 168, 76, 0.08);
}
[data-nav] a[aria-current="page"] {
  color: var(--gold-bright);
  font-weight: 500;
  background: rgba(201, 168, 76, 0.10);
}
[data-nav] a[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--gold);
  border-radius: 1px;
}

/* ===== Search Area ===== */
.search-area {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color var(--transition);
  background: rgba(255,255,255,0.04);
}
.search-area:focus-within {
  border-color: var(--gold-bright);
  box-shadow: 0 0 0 2px rgba(232, 195, 74, 0.15);
}
.search-area input {
  width: 130px;
  padding: 6px 12px;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.85rem;
  border: none;
  outline: none;
  transition: width 0.3s;
}
.search-area input::placeholder { color: var(--text-secondary); }
.search-area input:focus { width: 160px; }
.search-area button {
  padding: 6px 14px;
  background: var(--primary);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  border-left: 1px solid var(--border-color);
  border-radius: 0;
}
.search-area button:hover,
.search-area button:focus-visible {
  background: var(--gold);
  color: #1A2B1F;
}

/* ===== Nav Toggle (mobile) ===== */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px;
  flex-shrink: 0;
  transition: border-color var(--transition);
}
.nav-toggle .bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle:hover { border-color: var(--gold); }
.nav-toggle:hover .bar { background: var(--gold-bright); }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--gold);
  padding: 48px 24px 24px;
  margin-top: 80px;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
}
.footer-section h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.footer-section p,
.footer-section a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 6px;
  display: block;
}
.footer-section a:hover,
.footer-section a:focus-visible {
  color: var(--gold-bright);
}
.tagline {
  color: var(--text-primary);
  font-weight: 400;
  margin-bottom: 12px;
}
.trust-statement {
  font-size: 0.8rem;
  color: var(--text-secondary);
  opacity: 0.8;
  margin-top: 12px;
  line-height: 1.5;
}
.response-note {
  font-size: 0.8rem;
  color: var(--text-secondary);
  opacity: 0.7;
  margin-top: 8px;
  font-style: italic;
}
.footer-links a {
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
  margin-bottom: 4px;
}
.footer-links a:hover,
.footer-links a:focus-visible {
  border-bottom-color: var(--gold);
}
.footer-bottom {
  max-width: var(--max-width);
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  text-align: center;
}
.icp-info {
  font-size: 0.8rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

/* ===== Shared Utilities ===== */
.content-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--nav-height) + 40px) 24px 40px;
}

.btn {
  display: inline-block;
  padding: 10px 28px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--primary);
  border: 1px solid var(--gold);
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  text-align: center;
}
.btn:hover, .btn:focus-visible {
  background: var(--gold);
  color: #1A2B1F;
  box-shadow: 0 4px 16px rgba(201, 168, 76, 0.25);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--gold-bright); }
.breadcrumb .sep { color: var(--gold); opacity: 0.6; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 24px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.35);
  border-color: var(--gold);
}

.section-marker {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--gold);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .capsule-nav {
    top: 8px;
    border-radius: 28px;
    padding: 0 4px;
  }
  .nav-inner { padding: 0 12px; gap: 8px; }
  .search-area input { width: 100px; }
  .search-area input:focus { width: 120px; }
  .brand-logo { font-size: 1.25rem; }
}

@media (max-width: 640px) {
  :root { --nav-height: 56px; }
  .capsule-nav {
    top: 6px;
    border-radius: 24px;
    width: calc(100% - 12px);
    padding: 0 2px;
  }
  .nav-inner { padding: 0 8px; gap: 6px; }
  .brand-logo { font-size: 1.1rem; }
  .search-area input { width: 80px; font-size: 0.8rem; }
  .search-area input:focus { width: 100px; }
  .search-area button { padding: 6px 10px; font-size: 0.8rem; }

  /* Mobile nav */
  .nav-toggle { display: flex; }
  [data-nav] {
    position: absolute;
    top: calc(var(--nav-height) + 4px);
    left: 8px; right: 8px;
    flex-direction: column;
    background: rgba(26, 43, 31, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--gold);
    border-radius: 12px;
    padding: 12px 8px;
    gap: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
    pointer-events: none;
    max-height: 60vh;
    overflow-y: auto;
  }
  [data-nav][data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
  [data-nav] a {
    padding: 10px 16px;
    font-size: 1rem;
    width: 100%;
    border-radius: 6px;
  }
  [data-nav] a[aria-current="page"]::after { display: none; }
  [data-nav] a[aria-current="page"] {
    background: rgba(201, 168, 76, 0.12);
    border-left: 3px solid var(--gold);
    border-radius: 0 6px 6px 0;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .site-footer { padding: 32px 16px 20px; }
  .content-container { padding: calc(var(--nav-height) + 32px) 16px 32px; }
}

@media (max-width: 400px) {
  .brand-logo { font-size: 1rem; }
  .search-area input { width: 60px; }
  .search-area input:focus { width: 80px; }
  .search-area button { padding: 6px 8px; font-size: 0.75rem; }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-progress { display: none; }
  [data-nav] { transition: none; }
  .card:hover { transform: none; box-shadow: none; }
}