:root {
  --color-bg: #1A0A0E;
  --color-primary: #D4AF37;
  --color-secondary: #8B0000;
  --color-accent: #1B4D3E;
  --color-text: #F5E6C8;
  --color-surface: #2D1B2E;
  --color-highlight: #FFD700;
  --color-muted: #C0A86A;
  --color-border: #3A2A3A;
  --font-heading: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --fs-display: 3.5rem;
  --fs-h1: 2.5rem;
  --fs-h2: 2rem;
  --fs-h3: 1.5rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --container-width: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

#main-content {
  flex: 1;
  width: 100%;
}

p,
ul,
ol,
dl,
blockquote,
figure {
  margin: 0 0 1rem;
}

ul,
ol {
  padding-left: 1.5rem;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-text);
  margin: 0 0 0.75rem;
}

h1 {
  font-size: var(--fs-h1);
}

h2 {
  font-size: var(--fs-h2);
}

h3 {
  font-size: var(--fs-h3);
}

a {
  color: var(--color-primary);
}

a:hover {
  color: var(--color-highlight);
}

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

button {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--color-highlight);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 1rem;
  z-index: 2000;
  display: inline-block;
  padding: 0.75rem 1.25rem;
  background: var(--color-primary);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  left: 1rem;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-primary) 60%, var(--color-accent));
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 300;
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(26, 10, 14, 0.96);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  min-height: var(--header-height);
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-secondary);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.5rem;
  transform: rotate(-3deg);
  box-shadow: 4px 4px 0 rgba(212, 175, 55, 0.25);
}

.brand-text {
  display: flex;
  flex-direction: column;
  margin-left: 0.75rem;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--font-heading);
  font-weight: 900;
  letter-spacing: 0.08em;
  font-size: 1.5rem;
  color: var(--color-text);
}

.brand-slogan {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--color-muted);
  text-transform: uppercase;
  margin: 0;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 3rem;
  height: 3rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: var(--color-primary);
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: block;
  padding: 1.2rem 1rem;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  letter-spacing: 0.05em;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.nav-link:hover {
  color: var(--color-highlight);
  background: rgba(212, 175, 55, 0.08);
}

.nav-link[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.site-footer {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
  border-top: 6px solid var(--color-secondary);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 2.5rem;
}

.footer-brand {
  min-width: 0;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 2rem;
  color: var(--color-primary);
  margin: 0;
}

.footer-slogan {
  color: var(--color-muted);
  margin: 0.25rem 0 1rem;
  letter-spacing: 0.1em;
}

.footer-address {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin: 0;
  max-width: 20rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-heading {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0 0 0.5rem;
}

.footer-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.footer-links a:hover {
  color: var(--color-highlight);
  border-bottom-color: var(--color-primary);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-contact span {
  font-size: 0.875rem;
  color: var(--color-muted);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-muted);
}

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

.footer-trust {
  flex-basis: 100%;
  color: var(--color-muted);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  position: relative;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 8px 8px 0 rgba(212, 175, 55, 0.12);
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.btn:hover {
  background: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-highlight);
  border-color: var(--color-highlight);
  color: var(--color-bg);
}

.btn-secondary {
  border-color: var(--color-secondary);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: var(--color-secondary);
  color: var(--color-text);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 1rem 0;
  font-size: 0.875rem;
  color: var(--color-muted);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb a {
  color: var(--color-text);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-current {
  color: var(--color-primary);
}

.page-heading {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: var(--fs-h1);
  line-height: 1.2;
  margin: 0 0 1rem;
  color: var(--color-text);
}

.section-title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.2;
  margin: 0 0 1.5rem;
  padding-left: 1rem;
  color: var(--color-text);
  position: relative;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.25rem;
  bottom: 0.25rem;
  width: 4px;
  background: var(--color-primary);
}

.lead {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 60ch;
  margin-bottom: 1.5rem;
}

.entry-content {
  max-width: 72ch;
}

.entry-content h1,
.entry-content h2,
.entry-content h3 {
  margin-top: 2rem;
}

.entry-content h2 {
  font-size: var(--fs-h2);
}

.notice {
  background: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.25rem;
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.badge {
  display: inline-block;
  background: var(--color-secondary);
  border: 1px solid var(--color-primary);
  color: var(--color-text);
  padding: 0.25rem 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.image-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.image-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(139, 0, 0, 0.12) 48%, rgba(27, 77, 62, 0.25));
}

.image-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 960px) {
  .nav-toggle {
    display: flex;
  }

  .header-inner {
    flex-wrap: wrap;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    padding: 1rem;
  }

  .nav-link {
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--color-border);
    border-left: 3px solid transparent;
  }

  .nav-link[aria-current="page"] {
    border-left-color: var(--color-primary);
    border-bottom-color: transparent;
  }

  .nav-link:hover {
    background: var(--color-surface);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding-left: 1rem;
    padding-right: 1rem;
  }

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

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .section {
    padding: 3rem 0;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .scroll-progress {
    height: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  html {
    scroll-behavior: auto;
  }

  .card:hover {
    transform: none;
  }

  .nav-toggle-line {
    transition: none;
  }
}