:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --secondary: #06b6d4;
  --accent: #f97316;
  --accent-light: #ffedd5;
  --accent-pink: #ec4899;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #475569;
  --border-light: #e2e8f0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(79, 70, 229, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 20px 30px -10px rgba(79, 70, 229, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}
html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
}
body {
  width: 100%;
  overflow-x: hidden;
  background: radial-gradient(circle at 10% 20%, rgba(249, 115, 22, 0.05) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 40%),
              linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  background-attachment: fixed;
}
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}
header.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand-box {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-box .ai-page-logo {
  max-height: 40px;
  width: auto;
  display: block;
}
.brand-name {
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}
nav.main-nav {
  display: flex;
  align-items: center;
}
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0;
}
.nav-links a {
  padding: 8px 14px;
  color: var(--text-main);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  border-radius: var(--radius-sm);
}
.nav-links a:hover {
  color: var(--primary);
  background-color: rgba(79, 70, 229, 0.06);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 9999px;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #f97316 0%, #ec4899 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.45);
  color: #ffffff;
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background-color: var(--primary);
  color: #ffffff;
}
.btn-white {
  background: #ffffff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.btn-white:hover {
  background: #f1f5f9;
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  margin: 5px 0;
  transition: var(--transition);
}
section.page-section {
  padding: 80px 0;
  position: relative;
}
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px;
}
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  border: 1px solid rgba(79, 70, 229, 0.15);
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-muted);
}
.hero-section {
  padding: 90px 0 70px;
  text-align: center;
  position: relative;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 9999px;
  background: linear-gradient(90deg, #ffe4e6 0%, #ede9fe 100%);
  color: #9d174d;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(236, 72, 153, 0.2);
}
.hero-title {
  font-size: 46px;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 24px;
  color: #0f172a;
}
.hero-title .gradient-text {
  background: linear-gradient(135deg, #4f46e5 0%, #f97316 60%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 820px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}
.hero-btn-prominent {
  font-size: 18px;
  padding: 14px 36px;
  background: linear-gradient(135deg, #f97316 0%, #ec4899 50%, #4f46e5 100%);
  color: #fff;
  font-weight: 700;
  border-radius: 9999px;
  box-shadow: 0 10px 25px rgba(236, 72, 153, 0.4);
  transform: translateY(0);
  transition: var(--transition);
}
.hero-btn-prominent:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 15px 30px rgba(236, 72, 153, 0.5);
  color: #ffffff;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}
.stat-card {
  background: #ffffff;
  padding: 24px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(79, 70, 229, 0.3);
}
.stat-number {
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--primary);
}
.stat-card:nth-child(2) .stat-number { color: #f97316; }
.stat-card:nth-child(3) .stat-number { color: #ec4899; }
.stat-card:nth-child(4) .stat-number { color: #06b6d4; }
.stat-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.about-content h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 18px;
  line-height: 1.4;
}
.about-content p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 16px;
  line-height: 1.8;
}
.highlight-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.highlight-pill {
  padding: 6px 14px;
  background: #f1f5f9;
  border-radius: 9999px;
  font-size: 13px;
  color: var(--text-main);
  font-weight: 600;
  border: 1px solid var(--border-light);
}
.about-feature-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 32px;
  box-shadow: var(--shadow-md);
}
.feature-item-row {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}
.feature-item-row:last-child {
  margin-bottom: 0;
}
.feature-icon-badge {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}
.feature-icon-badge.orange {
  background: linear-gradient(135deg, #f97316 0%, #ec4899 100%);
}
.feature-icon-badge.pink {
  background: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
}
.feature-item-text h4 {
  font-size: 17px;
  margin-bottom: 6px;
}
.feature-item-text p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cards-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(236, 72, 153, 0.4);
}
.service-badge {
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 16px;
  background: #f1f5f9;
  color: var(--primary);
}
.service-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}
.tag-cloud-wrap {
  margin-top: 30px;
  background: #ffffff;
  padding: 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
}
.tag-cloud-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-main);
  text-align: center;
}
.tag-cloud-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.model-pill {
  padding: 6px 14px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  transition: var(--transition);
}
.model-pill:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: scale(1.05);
}
.process-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process-step {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 30px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f97316 0%, #ec4899 100%);
  color: #ffffff;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 4px 10px rgba(249, 115, 22, 0.3);
}
.process-step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-muted);
}
.network-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.network-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}
.network-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.network-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
.media-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 30px;
}
.media-box {
  background: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.media-box img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}
.media-caption {
  padding: 16px 20px;
}
.media-caption h4 {
  font-size: 16px;
  margin-bottom: 4px;
}
.media-caption p {
  font-size: 13px;
  color: var(--text-muted);
}
.banner-strip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}
.banner-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: #fff;
}
.banner-item img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}
.rating-highlight-card {
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #ec4899 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  margin-bottom: 40px;
  box-shadow: 0 15px 35px rgba(79, 70, 229, 0.3);
}
.rating-score {
  font-size: 64px;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 8px;
}
.rating-stars {
  font-size: 24px;
  color: #facc15;
  margin-bottom: 12px;
}
.rating-meta {
  font-size: 16px;
  font-weight: 500;
  opacity: 0.95;
}
.table-wrapper {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 600px;
}
.compare-table th, .compare-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
}
.compare-table th {
  background: #f8fafc;
  font-weight: 700;
  color: var(--text-main);
}
.compare-table tr:hover td {
  background: #fdf2f8;
}
.badge-highlight {
  display: inline-block;
  padding: 4px 10px;
  background: #dcfce7;
  color: #15803d;
  font-weight: 700;
  border-radius: 6px;
  font-size: 12px;
}
.badge-muted {
  display: inline-block;
  padding: 4px 10px;
  background: #f1f5f9;
  color: var(--text-muted);
  font-weight: 600;
  border-radius: 6px;
  font-size: 12px;
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.user-avatar-initial {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.user-meta h4 {
  font-size: 15px;
  font-weight: 700;
}
.user-meta span {
  font-size: 12px;
  color: var(--text-muted);
}
.review-content {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
.faq-accordion {
  max-width: 900px;
  margin: 0 auto;
}
.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}
.faq-question:hover {
  background: #faf5ff;
}
.faq-icon {
  font-size: 18px;
  transition: transform 0.3s ease;
  color: var(--primary);
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px 24px;
}
.wiki-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.wiki-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 24px;
}
.wiki-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}
.wiki-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
.articles-wrapper {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.articles-dynamic-box {
  margin-bottom: 24px;
  padding: 16px 20px;
  background: #f8fafc;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--primary);
  font-size: 14px;
  color: var(--text-muted);
}
.article-links-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.article-link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.article-link-item:hover {
  border-color: var(--accent-pink);
  color: var(--accent-pink);
  transform: translateX(4px);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
}
.contact-info-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}
.contact-info-card h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 20px;
}
.contact-list {
  list-style: none;
  margin-bottom: 30px;
}
.contact-list li {
  font-size: 15px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
}
.contact-list strong {
  color: var(--text-main);
}
.qr-container {
  text-align: center;
  padding: 20px;
  background: #f8fafc;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}
.qr-container img {
  max-width: 160px;
  height: auto;
  border-radius: 8px;
  margin-bottom: 10px;
  display: inline-block;
}
.form-container {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 36px;
  box-shadow: var(--shadow-md);
}
.form-container h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 20px;
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--text-main);
  background: #f8fafc;
  transition: var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}
textarea.form-control {
  resize: vertical;
  min-height: 110px;
}
.agent-banner {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  box-shadow: var(--shadow-lg);
}
.agent-content h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
}
.agent-content p {
  font-size: 15px;
  opacity: 0.9;
  max-width: 600px;
  line-height: 1.7;
}
footer.site-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-light);
  padding: 60px 0 30px;
  color: var(--text-main);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-main);
}
.footer-col p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
.footer-links-list {
  list-style: none;
}
.footer-links-list li {
  margin-bottom: 10px;
}
.footer-links-list a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 14px;
  transition: var(--transition);
}
.footer-links-list a:hover {
  color: var(--primary);
}
.friend-links-box {
  padding-top: 24px;
  margin-top: 24px;
  border-top: 1px solid var(--border-light);
}
.friend-links-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.friend-links-content {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.friend-links-content a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}
.friend-links-content a:hover {
  color: var(--primary);
}
.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-light);
  font-size: 13px;
  color: var(--text-muted);
}
.floating-widget {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.float-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  text-decoration: none;
  color: var(--text-main);
  transition: var(--transition);
  position: relative;
}
.float-btn:hover {
  background: var(--primary);
  color: #ffffff;
  transform: scale(1.1);
}
.float-btn-kefu {
  background: linear-gradient(135deg, #f97316 0%, #ec4899 100%);
  color: #ffffff;
  border: none;
}
.float-btn-kefu:hover {
  background: linear-gradient(135deg, #ea580c 0%, #db2777 100%);
}
.kefu-popover {
  position: absolute;
  right: 60px;
  bottom: 0;
  background: #ffffff;
  padding: 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  display: none;
  width: 180px;
  text-align: center;
}
.float-btn:hover .kefu-popover {
  display: block;
}
.kefu-popover img {
  width: 140px;
  height: auto;
  border-radius: 6px;
  display: block;
  margin: 0 auto 8px;
}
.kefu-popover span {
  font-size: 12px;
  color: var(--text-muted);
}
@media (max-width: 992px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    display: none;
    gap: 0;
  }
  .nav-links.active {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .cards-grid-3, .cards-grid-4, .process-flow, .network-grid, .reviews-grid, .wiki-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 36px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  .stats-grid, .cards-grid-3, .cards-grid-4, .process-flow, .network-grid, .reviews-grid, .wiki-grid, .media-gallery-grid, .banner-strip-grid, .article-links-list {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 28px;
  }
  .section-title {
    font-size: 24px;
  }
  .agent-banner {
    flex-direction: column;
    text-align: center;
  }
}