:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.55);
  --bg-card-hover: rgba(30, 41, 59, 0.75);
  --bg-glass: rgba(15, 23, 42, 0.7);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #fbbf24;
  --accent-secondary: #38bdf8;
  --accent-tertiary: #a78bfa;
  --accent-gradient: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
  --accent-gradient-2: linear-gradient(135deg, #38bdf8 0%, #6366f1 100%);
  --accent-gradient-3: linear-gradient(135deg, #a78bfa 0%, #ec4899 100%);
  --border-color: rgba(148, 163, 184, 0.12);
  --border-color-hover: rgba(148, 163, 184, 0.25);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 32px rgba(251, 191, 36, 0.15);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 72px;
  --max-width: 1280px;
  --content-width: 860px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.75);
  --bg-card-hover: rgba(255, 255, 255, 0.92);
  --bg-glass: rgba(255, 255, 255, 0.8);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: rgba(15, 23, 42, 0.08);
  --border-color-hover: rgba(15, 23, 42, 0.16);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
  --shadow-glow: 0 0 32px rgba(251, 191, 36, 0.2);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(251, 191, 36, 0.06), transparent),
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(56, 189, 248, 0.05), transparent),
    radial-gradient(ellipse 50% 60% at 50% 100%, rgba(167, 139, 250, 0.04), transparent);
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] body::before {
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(251, 191, 36, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(56, 189, 248, 0.06), transparent),
    radial-gradient(ellipse 50% 60% at 50% 100%, rgba(167, 139, 250, 0.05), transparent);
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input {
  font-family: inherit;
}

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

#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

#site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  gap: 20px;
}

.brand-area {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  transition: transform var(--transition-base);
}

.brand-logo:hover {
  transform: scale(1.04);
}

.brand-logo svg {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.brand-slogan {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  padding-left: 12px;
  border-left: 1px solid var(--border-color);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

#main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

#main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  position: relative;
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(148, 163, 184, 0.1);
}

.nav-link.active {
  color: var(--accent-primary);
  background: rgba(251, 191, 36, 0.1);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

#site-search {
  display: flex;
  align-items: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#site-search:focus-within {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.12);
}

#search-input {
  width: 160px;
  padding: 8px 12px;
  font-size: 0.8125rem;
  color: var(--text-primary);
  background: transparent;
  border: none;
  outline: none;
  transition: width var(--transition-base);
}

#search-input::placeholder {
  color: var(--text-muted);
}

#search-input:focus {
  width: 220px;
}

#site-search button {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

#site-search button:hover {
  color: var(--accent-primary);
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  background: rgba(251, 191, 36, 0.08);
  transform: translateY(-1px);
}

.mobile-only {
  display: none;
}

.mobile-menu {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px 20px;
  transform: translateY(-10px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu a {
  display: block;
  padding: 12px 16px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-menu a:hover {
  color: var(--accent-primary);
  background: rgba(251, 191, 36, 0.08);
}

#main-content {
  position: relative;
  z-index: 1;
}

.hero-section {
  display: flex;
  align-items: center;
  gap: 48px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px 48px;
  min-height: calc(100vh - var(--header-height));
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-content h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-metrics {
  display: flex;
  gap: 40px;
  margin-bottom: 36px;
  padding: 20px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-number {
  font-size: 1.75rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.metric-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: #0f172a;
  background: var(--accent-gradient);
  box-shadow: 0 4px 16px rgba(251, 191, 36, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(251, 191, 36, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.15);
}

.hero-visual {
  flex: 1;
  max-width: 600px;
}

.banner-carousel {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  aspect-ratio: 600 / 340;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition-slow);
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-slide.active {
  opacity: 1;
}

.carousel-slide svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-indicators {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.indicator {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.4);
  border: none;
  transition: all var(--transition-base);
}

.indicator.active {
  width: 28px;
  background: var(--accent-primary);
}

.indicator:hover {
  background: rgba(255, 255, 255, 0.7);
}

.breadcrumb-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 8px;
}

.breadcrumb-nav ol {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.breadcrumb-nav li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--text-muted);
  opacity: 0.5;
}

.breadcrumb-nav a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 24px;
}

.section h2 {
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  position: relative;
  padding-left: 18px;
}

.section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
}

.section h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--text-primary);
}

.section-content {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

.section-content p {
  margin-bottom: 16px;
}

.section-content ul,
.section-content ol {
  margin: 12px 0 20px;
  padding-left: 4px;
}

.section-content ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
}

.section-content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
}

.section-content ol {
  counter-reset: item;
}

.section-content ol li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
  counter-increment: item;
}

.section-content ol li::before {
  content: counter(item);
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #0f172a;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  line-height: 1;
}

.section-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.section-content blockquote {
  position: relative;
  margin: 20px 0;
  padding: 20px 24px 20px 52px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.section-content blockquote:hover {
  border-color: var(--border-color-hover);
  transform: translateX(4px);
}

.section-content blockquote::before {
  content: "\201C";
  position: absolute;
  left: 18px;
  top: 8px;
  font-size: 3rem;
  line-height: 1;
  font-family: Georgia, serif;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0.6;
}

.section-content blockquote p {
  margin: 0;
  font-style: italic;
  color: var(--text-secondary);
}

.news-item {
  position: relative;
  margin-bottom: 24px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
  overflow: hidden;
}

.news-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  transition: height var(--transition-base);
}

.news-item:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.news-item:hover::before {
  height: 100%;
}

.news-item h3 {
  margin: 0 0 8px;
  font-size: 1.0625rem;
}

.news-item time {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding: 2px 10px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

.news-item p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.article-card {
  position: relative;
  margin-bottom: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
  overflow: hidden;
}

.article-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(251, 191, 36, 0.2) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.article-card:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.article-card:hover::after {
  opacity: 1;
}

.article-card h3 {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  transition: color var(--transition-fast);
}

.article-card:hover h3 {
  color: var(--accent-primary);
}

.article-card time {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding: 2px 10px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

.article-card p {
  margin: 0 0 14px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-primary);
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.read-more::after {
  content: "\2192";
  transition: transform var(--transition-fast);
}

.read-more:hover {
  gap: 10px;
  color: var(--accent-secondary);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--border-color-hover);
}

.faq-item[open] {
  border-color: rgba(251, 191, 36, 0.25);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 22px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition-fast);
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: "+";
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 1rem;
  font-weight: 400;
  color: var(--accent-primary);
  background: rgba(251, 191, 36, 0.1);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), background var(--transition-base);
}

.faq-item[open] summary::before {
  content: "\2212";
  transform: rotate(180deg);
  background: rgba(251, 191, 36, 0.2);
}

.faq-item summary:hover {
  color: var(--accent-primary);
}

.faq-item p {
  padding: 0 22px 20px 58px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.8;
  animation: fadeSlideIn var(--transition-base) ease-out;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-info,
.contact-details {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
}

.contact-info:hover,
.contact-details:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.contact-info h3,
.contact-details h3 {
  margin-top: 0;
  margin-bottom: 16px;
  font-size: 1rem;
  color: var(--accent-primary);
}

.contact-info p {
  margin-bottom: 10px;
  font-size: 0.875rem;
  line-height: 1.7;
}

.contact-info strong {
  color: var(--text-primary);
}

.contact-details ul {
  margin-bottom: 20px;
}

.contact-details ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.contact-details ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
}

.sitemap-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sitemap-list li a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.sitemap-list li a:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  background: rgba(251, 191, 36, 0.08);
  transform: translateY(-2px);
}

.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.friend-links li a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.friend-links li a:hover {
  color: var(--accent-secondary);
  border-color: var(--accent-secondary);
  background: rgba(56, 189, 248, 0.08);
  transform: translateY(-2px);
}

#site-footer {
  position: relative;
  z-index: 1;
  margin-top: 40px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-brand svg {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.footer-brand span {
  font-size: 1.125rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-brand p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-links h3,
.footer-legal h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links ul,
.footer-legal ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a,
.footer-legal a {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover,
.footer-legal a:hover {
  color: var(--accent-primary);
  padding-left: 4px;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-meta p {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-policy {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px;
  border-top: 1px solid var(--border-color);
}

.footer-policy h3 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.footer-policy p {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-security {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px 32px;
  border-top: 1px solid var(--border-color);
}

.footer-security h3 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.footer-security p {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  color: #0f172a;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 20px rgba(251, 191, 36, 0.35);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(16px) scale(0.9);
}

.back-to-top:not([hidden]) {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 32px rgba(251, 191, 36, 0.5);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

@media (max-width: 1200px) {
  .brand-slogan {
    display: none;
  }

  #search-input {
    width: 130px;
  }

  #search-input:focus {
    width: 180px;
  }
}

@media (max-width: 1024px) {
  #main-nav {
    display: none;
  }

  .mobile-only {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .hero-section {
    flex-direction: column;
    min-height: auto;
    padding: 40px 24px 32px;
    gap: 32px;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
  }

  .hero-metrics {
    justify-content: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    max-width: 100%;
    width: 100%;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 12px;
  }

  .brand-logo svg {
    width: 34px;
    height: 34px;
  }

  .brand-name {
    font-size: 1.0625rem;
  }

  #site-search {
    display: none;
  }

  .hero-section {
    padding: 28px 16px 24px;
  }

  .hero-content h1 {
    font-size: 1.5rem;
  }

  .hero-subtitle {
    font-size: 0.9375rem;
  }

  .hero-metrics {
    gap: 24px;
    padding: 16px 0;
  }

  .metric-number {
    font-size: 1.375rem;
  }

  .metric-label {
    font-size: 0.75rem;
  }

  .btn {
    padding: 11px 22px;
    font-size: 0.875rem;
  }

  .section {
    padding: 40px 16px;
  }

  .section h2 {
    font-size: 1.25rem;
    margin-bottom: 20px;
  }

  .section h3 {
    font-size: 1rem;
  }

  .section-content {
    font-size: 0.875rem;
  }

  .breadcrumb-nav {
    padding: 0 16px 8px;
  }

  .news-item,
  .article-card {
    padding: 18px;
  }

  .faq-item summary {
    padding: 14px 16px;
    font-size: 0.875rem;
  }

  .faq-item p {
    padding: 0 16px 16px 48px;
    font-size: 0.8125rem;
  }

  .contact-info,
  .contact-details {
    padding: 20px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 16px 24px;
  }

  .footer-policy,
  .footer-security {
    padding-left: 16px;
    padding-right: 16px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 480px) {
  .hero-metrics {
    flex-direction: column;
    gap: 16px;
    align-items: center;
  }

  .metric {
    align-items: center;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .sitemap-list,
  .friend-links {
    gap: 8px;
  }

  .sitemap-list li a,
  .friend-links li a {
    padding: 6px 14px;
    font-size: 0.75rem;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  #site-header,
  .back-to-top,
  .hero-actions,
  .carousel-indicators {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .section {
    page-break-inside: avoid;
  }
}

::selection {
  background: rgba(251, 191, 36, 0.3);
  color: var(--text-primary);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}