:root {
  --brand-primary: #1a3a5c;
  --brand-secondary: #e86f4a;
  --brand-accent: #f5b342;
  --brand-gradient: linear-gradient(135deg, #1a3a5c 0%, #2d5a88 50%, #1e4a6f 100%);
  --brand-gradient-warm: linear-gradient(135deg, #e86f4a 0%, #f5b342 100%);
  --bg-body: #f7f8fa;
  --bg-card: #ffffff;
  --bg-nav: rgba(255, 255, 255, 0.82);
  --bg-footer: #1a2a3a;
  --bg-glass: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.35);
  --text-primary: #17202a;
  --text-secondary: #334155;
  --text-muted: #4b5563;
  --text-on-dark: #e5e7eb;
  --text-heading: #0f1a24;
  --border-color: #d1d5db;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 4px 20px rgba(232, 111, 74, 0.35);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

body.dark-mode {
  --bg-body: #0f1720;
  --bg-card: #1a2332;
  --bg-nav: rgba(26, 35, 50, 0.82);
  --bg-footer: #0b1120;
  --bg-glass: rgba(26, 35, 50, 0.65);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-primary: #e5e7eb;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-on-dark: #e5e7eb;
  --text-heading: #f8fafc;
  --border-color: #2d3a4d;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

::selection {
  background-color: rgba(232, 111, 74, 0.25);
  color: var(--text-heading);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 64px 0;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 12px;
  line-height: 1.35;
  letter-spacing: -0.02em;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--brand-gradient-warm);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 720px;
  margin-top: 16px;
}

.nav-bar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-nav);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--brand-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: transform var(--transition-bounce), color var(--transition);
}

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

body.dark-mode .nav-logo {
  color: #f8fafc;
}

.nav-logo svg {
  width: 34px;
  height: 34px;
  transition: transform var(--transition-bounce);
}

.nav-logo:hover svg {
  transform: rotate(-8deg) scale(1.1);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
  position: relative;
  padding: 4px 0;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--brand-primary);
}

body.dark-mode .nav-link:hover,
body.dark-mode .nav-link:focus {
  color: #f8fafc;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-gradient-warm);
  border-radius: 1px;
  transition: width var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-box {
  position: relative;
}

.search-input {
  width: 180px;
  padding: 8px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  background-color: var(--bg-card);
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition), width var(--transition);
  outline: none;
}

.search-input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.12);
  width: 220px;
}

body.dark-mode .search-input:focus {
  box-shadow: 0 0 0 3px rgba(232, 111, 74, 0.18);
}

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

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background-color var(--transition), color var(--transition), transform var(--transition-bounce), border-color var(--transition);
}

.theme-toggle:hover {
  background-color: rgba(26, 58, 92, 0.06);
  color: var(--brand-primary);
  transform: rotate(20deg) scale(1.08);
  border-color: var(--brand-primary);
}

body.dark-mode .theme-toggle {
  color: #e5e7eb;
  border-color: #2d3a4d;
}

body.dark-mode .theme-toggle:hover {
  background-color: rgba(232, 111, 74, 0.15);
  color: var(--brand-accent);
  border-color: var(--brand-secondary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background-color var(--transition), transform var(--transition);
}

.mobile-menu-btn:active {
  transform: scale(0.92);
}

.banner {
  position: relative;
  background: var(--brand-gradient);
  color: #ffffff;
  padding: 88px 0 76px;
  overflow: hidden;
}

.banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(232, 111, 74, 0.28) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: floatOrb 12s ease-in-out infinite;
}

.banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(245, 179, 66, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: floatOrb 15s ease-in-out infinite reverse;
}

@keyframes floatOrb {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-24px, 24px) scale(1.08);
  }
}

.banner-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.banner-content h1 {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  color: #ffffff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  letter-spacing: -0.02em;
  animation: fadeInUp 0.8s ease both;
}

.banner-content h1 span {
  color: #f5b342;
  position: relative;
  display: inline-block;
}

.banner-content h1 span::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(245, 179, 66, 0.25);
  border-radius: 4px;
  z-index: -1;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.banner-desc {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #e8edf3;
  margin-bottom: 32px;
  max-width: 520px;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 0.8s 0.15s ease both;
}

.banner-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s 0.3s ease both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  background: var(--brand-gradient-warm);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-bounce), box-shadow var(--transition), filter var(--transition);
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn-primary:hover::before {
  transform: translateX(100%);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 28px rgba(232, 111, 74, 0.5);
  filter: brightness(1.05);
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  background-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition-bounce), box-shadow var(--transition);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.18);
  border-color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.banner-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInUp 0.9s 0.2s ease both;
}

.banner-visual svg {
  width: 100%;
  max-width: 440px;
  height: auto;
  filter: drop-shadow(0 12px 40px rgba(0, 0, 0, 0.25));
  animation: floatVisual 6s ease-in-out infinite;
}

@keyframes floatVisual {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

.breadcrumb {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 20px 0;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

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

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

body.dark-mode .breadcrumb a:hover {
  color: var(--brand-accent);
}

.breadcrumb .sep {
  color: var(--border-color);
  margin: 0 2px;
}

.breadcrumb .current {
  color: var(--text-primary);
  font-weight: 500;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-bounce), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-gradient-warm);
  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(232, 111, 74, 0.25);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
  transition: transform var(--transition-bounce);
}

.card:hover .card-icon {
  transform: scale(1.12) rotate(-6deg);
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 10px;
  transition: color var(--transition);
}

.card:hover h3 {
  color: var(--brand-secondary);
}

.card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.article-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-bounce), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(232, 111, 74, 0.25);
}

.article-thumb {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  transition: transform var(--transition);
}

.article-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.15) 100%);
}

.article-card:hover .article-thumb svg {
  transform: scale(1.15) rotate(4deg);
  transition: transform 0.5s ease;
}

.article-thumb svg {
  transition: transform 0.5s ease;
}

.article-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
  width: fit-content;
  transition: transform var(--transition);
}

.article-card:hover .article-tag {
  transform: translateX(4px);
}

.article-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 10px;
  line-height: 1.45;
  transition: color var(--transition);
}

.article-title:hover {
  color: var(--brand-secondary);
}

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.read-more {
  font-weight: 600;
  color: var(--brand-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition), transform var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.read-more:hover {
  color: #d45a35;
  transform: translateX(4px);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), background-color var(--transition);
}

.faq-item:hover {
  border-color: rgba(232, 111, 74, 0.3);
  box-shadow: var(--shadow-sm);
}

.faq-item.open {
  border-color: rgba(232, 111, 74, 0.4);
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-heading);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: color var(--transition), background-color var(--transition);
  gap: 16px;
  font-family: inherit;
}

.faq-question:hover {
  color: var(--brand-secondary);
}

.faq-item.open .faq-question {
  color: var(--brand-secondary);
}

.faq-question .arrow {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform var(--transition-bounce), color var(--transition);
  color: var(--text-muted);
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
  color: var(--brand-secondary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 700px;
  padding: 0 24px 20px;
}

.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
}

.step-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.step-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--brand-gradient-warm);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

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

.step-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
  border-color: rgba(232, 111, 74, 0.25);
}

.step-num {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--brand-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(26, 58, 92, 0.25);
  transition: transform var(--transition-bounce);
}

.step-item:hover .step-num {
  transform: scale(1.12) rotate(-6deg);
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
  min-width: 560px;
}

.table th {
  background: linear-gradient(180deg, #f0f2f5 0%, #e8ebef 100%);
  color: var(--text-heading);
  font-weight: 700;
  padding: 14px 18px;
  text-align: left;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

.table td {
  padding: 13px 18px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  line-height: 1.65;
  transition: background-color var(--transition);
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:nth-child(even) {
  background-color: #fafbfc;
}

.table tbody tr:hover {
  background-color: rgba(232, 111, 74, 0.04);
}

body.dark-mode .table th {
  background: linear-gradient(180deg, #1f2937 0%, #1a2332 100%);
  color: #f8fafc;
}

body.dark-mode .table tr:nth-child(even) {
  background-color: #1a2332;
}

body.dark-mode .table tbody tr:hover {
  background-color: rgba(232, 111, 74, 0.08);
}

.testimonial-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 26px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition-bounce), border-color var(--transition);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 12px;
  right: 22px;
  font-size: 4rem;
  line-height: 1;
  color: var(--brand-secondary);
  opacity: 0.12;
  font-family: Georgia, serif;
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: rgba(232, 111, 74, 0.25);
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: #ffffff;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-bounce);
}

.testimonial-card:hover .author-avatar {
  transform: scale(1.1);
}

.author-name {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-heading);
}

.author-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.tag {
  display: inline-block;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  background-color: #eef1f5;
  color: var(--text-secondary);
  transition: background-color var(--transition), color var(--transition), transform var(--transition-bounce);
  cursor: default;
}

.tag:hover {
  background: var(--brand-gradient-warm);
  color: #ffffff;
  transform: translateY(-2px) scale(1.05);
}

body.dark-mode .tag {
  background-color: #2d3a4d;
  color: #cbd5e1;
}

body.dark-mode .tag:hover {
  background: var(--brand-gradient-warm);
  color: #ffffff;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.contact-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition-bounce), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.contact-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 3px;
  background: var(--brand-gradient-warm);
  border-radius: 0 0 4px 4px;
  transition: transform var(--transition);
}

.contact-item:hover::before {
  transform: translateX(-50%) scaleX(1);
}

.contact-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(232, 111, 74, 0.25);
}

.contact-icon {
  font-size: 1.9rem;
  margin-bottom: 12px;
  transition: transform var(--transition-bounce);
  display: inline-block;
}

.contact-item:hover .contact-icon {
  transform: scale(1.2) rotate(-8deg);
}

.info-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info-value {
  font-size: 0.98rem;
  color: var(--text-primary);
  font-weight: 600;
  word-break: break-all;
}

.info-value a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color var(--transition);
}

body.dark-mode .info-value a {
  color: var(--brand-accent);
}

.info-value a:hover {
  color: var(--brand-secondary);
  text-decoration: underline;
}

.site-footer {
  background-color: var(--bg-footer);
  color: var(--text-on-dark);
  padding: 64px 0 0;
  margin-top: 0;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-gradient-warm);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand {
  font-size: 1.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-text {
  font-size: 0.9rem;
  color: #b0bac9;
  line-height: 1.8;
  margin-bottom: 10px;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  position: relative;
  display: inline-block;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--brand-secondary);
  border-radius: 1px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: #b0bac9;
  text-decoration: none;
  transition: color var(--transition), transform var(--transition);
  display: inline-block;
}

.footer-links a:hover {
  color: #ffffff;
  transform: translateX(4px);
}

.footer-links li {
  font-size: 0.88rem;
  color: #b0bac9;
  line-height: 1.7;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 24px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: #8a96a8;
}

.copyright a {
  color: #b0bac9;
  text-decoration: none;
  transition: color var(--transition);
}

.copyright a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--brand-gradient);
  color: #ffffff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(26, 58, 92, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition-bounce), background var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--brand-gradient-warm);
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 10px 28px rgba(232, 111, 74, 0.5);
}

.back-to-top:active {
  transform: translateY(-2px) scale(0.98);
}

.fade-in {
  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);
  will-change: opacity, transform;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .banner-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .banner-content h1 {
    font-size: 2.1rem;
  }

  .banner-visual {
    display: none;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--bg-nav);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-12px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .nav-links.open {
    display: flex;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .search-input {
    width: 120px;
  }

  .search-input:focus {
    width: 160px;
  }

  .banner {
    padding: 52px 0 44px;
  }

  .banner-content h1 {
    font-size: 1.7rem;
  }

  .banner-desc {
    font-size: 1rem;
  }

  .section {
    padding: 44px 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .step-item {
    flex-direction: column;
    gap: 12px;
  }

  .copyright {
    flex-direction: column;
    text-align: center;
  }

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

@media (max-width: 480px) {
  .banner-content h1 {
    font-size: 1.45rem;
  }

  .btn-primary,
  .btn-secondary {
    padding: 11px 22px;
    font-size: 0.92rem;
  }

  .container {
    padding: 0 16px;
  }

  .faq-question {
    padding: 15px 18px;
    font-size: 0.93rem;
  }

  .faq-answer {
    padding: 0 18px;
  }

  .faq-item.open .faq-answer {
    padding: 0 18px 16px;
  }

  .card {
    padding: 22px 18px;
  }

  .step-item {
    padding: 18px;
  }
}

@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;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .nav-bar,
  .back-to-top,
  .banner-visual,
  .banner-actions {
    display: none !important;
  }

  body {
    background: #ffffff;
    color: #000000;
  }

  .card,
  .article-card,
  .faq-item,
  .step-item {
    box-shadow: none;
    border: 1px solid #cccccc;
  }
}