:root {
  --gold: #D4AF37;
  --gold-dark: #8B6508;
  --black: #0A0A0A;
  --cream: #F5F5DC;
  --ruby: #E0115F;
  --jade: #046A38;
  --blue: #00BFFF;
  --stone: #8B8682;
  --olive: #6B8E23;
  --terracotta: #E2725B;
  --gold-grad: linear-gradient(135deg, #D4AF37, #8B6508);
  --bg: #0A0A0A;
  --text: #F5F5DC;
  --muted: #8B8682;
  --border: rgba(212, 175, 55, 0.25);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
  --font-sans: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --radius: 0rem;
  --pill: 999px;
  --container-width: 1280px;
  --header-height: 72px;
  --transition-fast: 0.24s ease;
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

ul, ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 2px;
}

#main-content {
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.skip-link {
  position: absolute;
  left: -1000px;
  top: 16px;
  z-index: 1000;
  padding: 12px 20px;
  background: var(--gold-grad);
  color: #000;
  font-weight: 700;
  border-radius: var(--pill);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.6);
}

.skip-link:focus {
  left: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 20px 0;
  background: linear-gradient(180deg, rgba(10, 10, 10, 0.92), rgba(10, 10, 10, 0.72), transparent);
  backdrop-filter: blur(2px);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 12px 8px 24px;
  background: rgba(10, 10, 10, 0.88);
  border: 1px solid var(--border);
  border-radius: var(--pill);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.65), 0 0 24px rgba(212, 175, 55, 0.08);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  background: linear-gradient(120deg, #F5DD9B, var(--gold) 60%, var(--gold-dark));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 18px rgba(212, 175, 55, 0.25);
}

.brand-tagline {
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  color: var(--stone);
  margin-top: 3px;
  text-transform: uppercase;
}

.site-nav {
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--cream);
  border-radius: var(--pill);
  letter-spacing: 0.02em;
  border: 1px solid transparent;
}

.nav-link:hover {
  background: rgba(212, 175, 55, 0.14);
  color: var(--gold);
  border-color: rgba(212, 175, 55, 0.2);
}

.nav-link[aria-current="page"] {
  background: var(--gold-grad);
  color: #000;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
}

.header-cta {
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--pill);
  cursor: pointer;
  position: relative;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.1);
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  content: "";
  width: 18px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  position: relative;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle-icon::before {
  position: absolute;
  top: -6px;
}

.nav-toggle-icon::after {
  position: absolute;
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

.site-footer {
  background: #070707;
  border-top: 2px solid var(--gold-dark);
  padding: 0;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.8), transparent);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 0;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 900;
  background: linear-gradient(120deg, #F5DD9B, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}

.footer-brand-desc {
  color: var(--stone);
  font-size: 0.85rem;
  margin-top: 8px;
  letter-spacing: 0.08em;
}

.footer-trust {
  color: rgba(245, 245, 220, 0.65);
  font-size: 0.9rem;
  margin-top: 20px;
  max-width: 46ch;
  border-left: 2px solid var(--gold-dark);
  padding-left: 16px;
}

.footer-heading {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

.footer-links ul,
.footer-contact ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  color: var(--cream);
  font-size: 0.9rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-link:hover {
  color: var(--gold);
  padding-left: 4px;
}

.footer-contact {
  font-size: 0.9rem;
  color: rgba(245, 245, 220, 0.8);
}

.footer-contact-item {
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.footer-policy {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.footer-policy .footer-link {
  font-weight: 600;
}

.footer-sep {
  color: var(--stone);
}

.footer-legal {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
  padding: 24px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--stone);
}

.footer-copyright,
.footer-icp {
  margin: 0;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border: 1px solid transparent;
  border-radius: var(--pill);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  user-select: none;
}

.btn-primary {
  background: var(--gold-grad);
  color: #000;
  box-shadow: 0 0 18px rgba(212, 175, 55, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 0 32px rgba(212, 175, 55, 0.55);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: var(--gold);
  color: var(--gold);
}

.btn-outline:hover {
  background: rgba(212, 175, 55, 0.1);
  box-shadow: 0 0 18px rgba(212, 175, 55, 0.25);
}

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

.section {
  padding: 96px 24px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 18px;
}

.section-label::before {
  content: "";
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.15;
  color: var(--cream);
  margin: 8px 0 16px;
  letter-spacing: 0.02em;
}

.section-content {
  max-width: 65ch;
  color: var(--stone);
  font-size: 1rem;
  line-height: 1.9;
}

.breadcrumb {
  padding: 20px 24px;
}

.breadcrumb-list {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--stone);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--gold-dark);
  margin: 0 4px;
}

.breadcrumb-link {
  color: var(--stone);
}

.breadcrumb-link:hover {
  color: var(--gold);
}

.breadcrumb-link[aria-current="page"] {
  color: var(--gold);
  font-weight: 600;
}

.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}

.image-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: linear-gradient(135deg, rgba(212,175,55,0.08), rgba(10,10,10,0.9));
  aspect-ratio: var(--ar, 4/3);
}

.image-frame::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 70% 20%, rgba(0,191,255,0.08), transparent 50%);
  pointer-events: none;
}

[data-reveal] {
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-reveal-stagger] > [data-reveal] {
  transition-delay: calc(var(--stagger-index, 0) * 120ms);
}

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--blue), var(--gold));
  width: var(--progress, 0%);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.5);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.scroll-progress.is-visible {
  opacity: 1;
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    border-radius: 28px;
    padding: 12px 16px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    order: 3;
    flex-basis: 100%;
    display: none;
    border-top: 1px solid var(--border);
    margin-top: 8px;
    padding-top: 8px;
  }

  .site-nav[data-open] {
    display: block;
    animation: navFade 0.28s ease;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 1rem;
    text-align: center;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-legal {
    grid-column: 1;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 8px 10px 0;
  }

  .header-inner {
    border-radius: 24px;
    gap: 8px;
  }

  .brand-name {
    font-size: 1.2rem;
  }

  .brand-tagline {
    font-size: 0.58rem;
    letter-spacing: 0.18em;
  }

  .header-cta {
    padding: 8px 16px;
    font-size: 0.8rem;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }

  .section {
    padding: 56px 16px;
  }

  .footer-inner {
    padding: 40px 20px 0;
  }
}

@keyframes navFade {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .scroll-progress {
    display: none;
  }
}