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

:root {
  --primary: #0f2b46;
  --primary-light: #1a3d5c;
  --primary-dark: #081a2e;
  --accent: #f0a500;
  --accent-light: #ffc233;
  --accent-dark: #cc8a00;
  --bg: #f5f7fa;
  --bg-alt: #eef1f6;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-bg-solid: #ffffff;
  --text: #1a2332;
  --text-light: #5a6a7e;
  --text-lighter: #8a99ad;
  --border: rgba(15, 43, 70, 0.1);
  --border-solid: #dfe5ed;
  --shadow-sm: 0 2px 8px rgba(15, 43, 70, 0.06);
  --shadow: 0 8px 32px rgba(15, 43, 70, 0.1);
  --shadow-lg: 0 16px 48px rgba(15, 43, 70, 0.14);
  --shadow-glow: 0 0 40px rgba(240, 165, 0, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --radius-full: 9999px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-blur: blur(20px);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  transition: background-color 0.4s ease, color 0.4s ease;
}

::selection {
  background: var(--accent);
  color: var(--primary-dark);
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--text-lighter);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}

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

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

a:hover {
  color: var(--accent-dark);
}

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

ul,
ol {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--primary);
  white-space: nowrap;
  letter-spacing: -0.02em;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.02);
  color: var(--primary);
}

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 8px;
  transition: box-shadow var(--transition-fast);
}

.logo:hover svg {
  box-shadow: 0 0 20px rgba(15, 43, 70, 0.25);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-menu a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  position: relative;
  transition: all var(--transition-fast);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform var(--transition-fast);
}

.nav-menu a:hover {
  background: rgba(15, 43, 70, 0.06);
  color: var(--primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-menu a.active {
  background: var(--primary);
  color: #fff;
}

.nav-menu a.active::after {
  background: var(--accent);
}

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

.search-toggle,
.theme-toggle,
.mobile-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-solid);
  background: var(--card-bg-solid);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: var(--text);
  flex-shrink: 0;
}

.search-toggle:hover,
.theme-toggle:hover,
.mobile-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 43, 70, 0.2);
}

.search-toggle:active,
.theme-toggle:active,
.mobile-toggle:active {
  transform: translateY(0);
}

.mobile-toggle {
  display: none;
}

.search-bar {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  box-shadow: var(--shadow);
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search-bar.active {
  display: block;
}

.search-bar form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  gap: 8px;
}

.search-bar input {
  flex: 1;
  padding: 12px 18px;
  border: 1px solid var(--border-solid);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  outline: none;
  background: var(--card-bg-solid);
  color: var(--text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-bar input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 43, 70, 0.1);
}

.search-bar button {
  padding: 12px 28px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.search-bar button:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 43, 70, 0.2);
}

.breadcrumb {
  padding: 16px 0;
  font-size: 0.83rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

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

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

.breadcrumb span.sep {
  color: var(--text-lighter);
  user-select: none;
}

.breadcrumb span[aria-current="page"] {
  color: var(--text);
  font-weight: 500;
}

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0f2b46 0%, #1a3d5c 35%, #2a5a7a 65%, #0f2b46 100%);
  background-size: 300% 300%;
  animation: heroGradient 12s ease infinite;
  border-radius: var(--radius);
  margin: 16px 0 36px;
  min-height: 340px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

@keyframes heroGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(240, 165, 0, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(42, 90, 122, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.6;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 32px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s ease;
  text-align: center;
  flex-direction: column;
  gap: 20px;
  z-index: 2;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  position: relative;
}

.hero-slide h1,
.hero-slide h2 {
  color: #fff;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  line-height: 1.3;
  font-weight: 800;
  max-width: 900px;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
  animation: heroTextIn 0.8s ease both;
}

.hero-slide p {
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  max-width: 700px;
  line-height: 1.7;
  animation: heroTextIn 0.8s ease 0.15s both;
}

@keyframes heroTextIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-slide .cta-btn {
  display: inline-block;
  padding: 14px 42px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: var(--primary-dark);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1.05rem;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(240, 165, 0, 0.35);
  animation: heroTextIn 0.8s ease 0.3s both;
  position: relative;
  overflow: hidden;
}

.hero-slide .cta-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.hero-slide .cta-btn:hover::before {
  transform: translateX(100%);
}

.hero-slide .cta-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 32px rgba(240, 165, 0, 0.5);
}

.hero-slide .cta-btn:active {
  transform: translateY(-1px) scale(0.99);
}

.hero-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.hero-dots button:hover {
  border-color: var(--accent);
  background: rgba(240, 165, 0, 0.4);
}

.hero-dots button.active {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.3);
  box-shadow: 0 0 12px rgba(240, 165, 0, 0.6);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin: 36px 0;
}

.stat-card {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
  background-size: 200% 100%;
  opacity: 0;
  transition: opacity var(--transition);
}

.stat-card:hover::before {
  opacity: 1;
  animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(240, 165, 0, 0.3);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 10px;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-light);
  font-weight: 500;
}

.section {
  padding: 56px 0;
}

.section-title {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
  position: relative;
  padding-bottom: 18px;
  letter-spacing: -0.02em;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 2px;
  transition: width var(--transition);
}

.section:hover .section-title::after {
  width: 100px;
}

.section-subtitle {
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 36px;
  max-width: 800px;
  line-height: 1.7;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.card:hover::before {
  transform: scaleX(1);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(240, 165, 0, 0.25);
}

.card h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card h4 {
  font-size: 1rem;
  color: var(--primary-light);
  margin: 18px 0 8px;
  font-weight: 600;
}

.card p {
  font-size: 0.94rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 8px;
}

.card p:last-child {
  margin-bottom: 0;
}

.card ul {
  padding-left: 20px;
  margin-top: 8px;
}

.card li {
  font-size: 0.92rem;
  color: var(--text-light);
  margin-bottom: 8px;
  line-height: 1.7;
  position: relative;
  list-style: none;
  padding-left: 4px;
}

.card li::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  transition: transform var(--transition-fast);
}

.card li:hover::before {
  transform: scale(1.5);
}

.article-list {
  display: grid;
  gap: 20px;
}

.article-item {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.article-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

.article-item:hover::before {
  transform: scaleY(1);
}

.article-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow);
  border-color: rgba(240, 165, 0, 0.2);
}

.article-item h3 {
  font-size: 1.1rem;
  color: var(--primary);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.article-item h3 a {
  color: var(--primary);
  transition: color var(--transition-fast);
}

.article-item h3 a:hover {
  color: var(--accent-dark);
}

.article-meta {
  font-size: 0.82rem;
  color: var(--text-lighter);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.article-meta time {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-summary {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.75;
}

.read-more {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
  transition: all var(--transition-fast);
  align-self: flex-start;
}

.read-more:hover {
  color: var(--primary);
  gap: 8px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.faq-item:hover {
  border-color: rgba(15, 43, 70, 0.2);
  box-shadow: var(--shadow-sm);
}

.faq-item.open {
  border-color: rgba(240, 165, 0, 0.35);
  box-shadow: 0 4px 20px rgba(240, 165, 0, 0.1);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
  line-height: 1.5;
  font-family: inherit;
}

.faq-question:hover {
  background: rgba(15, 43, 70, 0.03);
  color: var(--primary);
}

.faq-question .arrow {
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
  color: var(--text-lighter);
  font-size: 0.75rem;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(15, 43, 70, 0.05);
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
  background: var(--accent);
  color: var(--primary-dark);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s ease;
  padding: 0 24px;
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 24px 24px;
}

.howto-steps {
  display: grid;
  gap: 16px;
  counter-reset: step;
}

.howto-step {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-sm);
  padding: 28px 28px 28px 80px;
  position: relative;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.howto-step:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow);
  border-color: rgba(240, 165, 0, 0.25);
}

.howto-step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 24px;
  top: 28px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
  box-shadow: 0 4px 12px rgba(15, 43, 70, 0.2);
}

.howto-step:hover::before {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary-dark);
  transform: scale(1.1) rotate(-5deg);
  box-shadow: 0 6px 20px rgba(240, 165, 0, 0.35);
}

.howto-step h4 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 8px;
  font-weight: 700;
}

.howto-step p {
  font-size: 0.93rem;
  color: var(--text-light);
  line-height: 1.75;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.team-card {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(240, 165, 0, 0.25);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(15, 43, 70, 0.2);
}

.team-card:hover .team-avatar {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary-dark);
  transform: scale(1.08) rotate(5deg);
  box-shadow: 0 8px 28px rgba(240, 165, 0, 0.35);
}

.team-card h4 {
  font-size: 1rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 6px;
}

.team-card p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.7;
}

.site-footer {
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: rgba(255, 255, 255, 0.8);
  padding: 56px 0 28px;
  margin-top: 56px;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
  background-size: 200% 100%;
  animation: shimmer 3s linear infinite;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 36px;
  margin-bottom: 36px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
  font-weight: 700;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.88rem;
  transition: all var(--transition-fast);
  display: inline-block;
}

.footer-col a:hover {
  color: var(--accent);
  transform: translateX(4px);
}

.footer-col p {
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom a:hover {
  color: var(--accent);
}

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(15, 43, 70, 0.35);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary-dark);
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 28px rgba(240, 165, 0, 0.45);
}

.back-to-top:active {
  transform: translateY(-2px) scale(1);
}

body.dark-mode {
  --primary: #4a9eff;
  --primary-light: #6db3ff;
  --primary-dark: #1a3d5c;
  --accent: #f0a500;
  --accent-light: #ffc233;
  --accent-dark: #ffd666;
  --bg: #0a1628;
  --bg-alt: #0f1f33;
  --card-bg: rgba(22, 40, 62, 0.75);
  --card-bg-solid: #16283e;
  --text: #e2e8f0;
  --text-light: #94a3b8;
  --text-lighter: #64748b;
  --border: rgba(255, 255, 255, 0.08);
  --border-solid: #2a3f56;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --glass-bg: rgba(15, 31, 51, 0.78);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-blur: blur(20px);
}

body.dark-mode .site-header {
  background: rgba(10, 22, 40, 0.85);
}

body.dark-mode .site-header.scrolled {
  background: rgba(10, 22, 40, 0.95);
}

body.dark-mode .hero {
  background: linear-gradient(135deg, #0a1628 0%, #16283e 35%, #1e3a5c 65%, #0a1628 100%);
  background-size: 300% 300%;
}

body.dark-mode .hero-slide h1,
body.dark-mode .hero-slide h2 {
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
}

body.dark-mode .stat-number {
  color: var(--accent);
}

body.dark-mode .section-title {
  color: var(--text);
}

body.dark-mode .card h3 {
  color: var(--primary);
}

body.dark-mode .card h4 {
  color: var(--primary-light);
}

body.dark-mode .article-item h3 a {
  color: var(--text);
}

body.dark-mode .article-item h3 a:hover {
  color: var(--accent);
}

body.dark-mode .faq-question {
  color: var(--text);
}

body.dark-mode .faq-question:hover {
  background: rgba(255, 255, 255, 0.04);
}

body.dark-mode .howto-step h4 {
  color: var(--primary);
}

body.dark-mode .team-card h4 {
  color: var(--primary);
}

body.dark-mode .site-footer {
  background: linear-gradient(180deg, #0f1f33 0%, #081420 100%);
}

body.dark-mode .search-bar input {
  background: var(--card-bg-solid);
  color: var(--text);
}

body.dark-mode .search-toggle,
body.dark-mode .theme-toggle,
body.dark-mode .mobile-toggle {
  background: var(--card-bg-solid);
  border-color: var(--border-solid);
  color: var(--text);
}

body.dark-mode .search-toggle:hover,
body.dark-mode .theme-toggle:hover,
body.dark-mode .mobile-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

body.dark-mode .nav-menu a:hover {
  background: rgba(255, 255, 255, 0.06);
}

body.dark-mode .nav-menu a.active {
  background: var(--primary);
  color: #0a1628;
}

body.dark-mode .back-to-top {
  background: linear-gradient(135deg, #16283e, #1e3a5c);
}

body.dark-mode .back-to-top:hover {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #0a1628;
}

.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:nth-child(2) { transition-delay: 0.08s; }
.reveal:nth-child(3) { transition-delay: 0.16s; }
.reveal:nth-child(4) { transition-delay: 0.24s; }
.reveal:nth-child(5) { transition-delay: 0.32s; }
.reveal:nth-child(6) { transition-delay: 0.4s; }

@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }
  .nav-menu a {
    padding: 8px 10px;
    font-size: 0.84rem;
  }
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
}

@media (max-width: 900px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    gap: 4px;
    animation: slideDown 0.3s ease;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-menu a {
    padding: 14px 18px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }
  .nav-menu a::after {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
  .hero {
    min-height: 300px;
  }
  .hero-slide {
    padding: 40px 24px;
  }
  .section {
    padding: 44px 0;
  }
  .howto-step {
    padding: 24px 24px 24px 72px;
  }
  .howto-step::before {
    left: 20px;
    top: 24px;
    width: 36px;
    height: 36px;
    font-size: 0.92rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 16px;
  }
  .header-inner {
    height: 60px;
    gap: 10px;
  }
  .logo {
    font-size: 1rem;
  }
  .logo svg {
    width: 32px;
    height: 32px;
  }
  .logo span {
    display: none;
  }
  .search-toggle,
  .theme-toggle,
  .mobile-toggle {
    width: 36px;
    height: 36px;
  }
  .hero {
    min-height: 260px;
    border-radius: var(--radius-sm);
    margin: 12px 0 24px;
  }
  .hero-slide {
    padding: 32px 18px;
    gap: 16px;
  }
  .hero-slide h1,
  .hero-slide h2 {
    font-size: clamp(1.2rem, 5vw, 1.6rem);
  }
  .hero-slide p {
    font-size: 0.88rem;
  }
  .hero-slide .cta-btn {
    padding: 12px 32px;
    font-size: 0.95rem;
  }
  .hero-dots {
    bottom: 14px;
  }
  .section {
    padding: 32px 0;
  }
  .section-title {
    font-size: 1.3rem;
    padding-bottom: 14px;
  }
  .section-title::after {
    width: 44px;
    height: 3px;
  }
  .section-subtitle {
    font-size: 0.9rem;
    margin-bottom: 24px;
  }
  .card {
    padding: 22px;
  }
  .card h3 {
    font-size: 1.05rem;
  }
  .stat-card {
    padding: 24px 16px;
  }
  .stat-number {
    font-size: 1.9rem;
  }
  .stat-label {
    font-size: 0.82rem;
  }
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 24px 0;
  }
  .article-item {
    padding: 20px;
  }
  .article-item h3 {
    font-size: 1rem;
  }
  .faq-question {
    padding: 16px 18px;
    font-size: 0.92rem;
  }
  .faq-answer {
    padding: 0 18px;
    font-size: 0.88rem;
  }
  .faq-item.open .faq-answer {
    padding: 0 18px 18px;
  }
  .howto-step {
    padding: 20px 18px 20px 64px;
  }
  .howto-step::before {
    left: 16px;
    top: 20px;
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
  }
  .howto-step h4 {
    font-size: 0.98rem;
  }
  .howto-step p {
    font-size: 0.88rem;
  }
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .team-card {
    padding: 24px 16px;
  }
  .team-avatar {
    width: 64px;
    height: 64px;
    font-size: 1.4rem;
    margin-bottom: 14px;
  }
  .team-card h4 {
    font-size: 0.92rem;
  }
  .team-card p {
    font-size: 0.8rem;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
  .breadcrumb {
    font-size: 0.78rem;
    padding: 12px 0;
  }
  .search-bar {
    padding: 12px 16px;
  }
  .search-bar form {
    flex-direction: column;
  }
  .search-bar button {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .stats-row {
    grid-template-columns: 1fr;
  }
  .team-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@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-dots,
  .search-bar {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .card,
  .article-item,
  .faq-item,
  .howto-step {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}