:root {
  --primary: #00a896;
  --primary-dark: #028090;
  --primary-light: #e6f7f5;
  --accent: #05668d;
  --teal-gradient: linear-gradient(135deg, #00a896 0%, #028090 50%, #05668d 100%);
  --soft-gradient: linear-gradient(180deg, #f0faf9 0%, #ffffff 100%);
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --bg-main: #f8fcfb;
  --bg-card: #ffffff;
  --border-color: #e2ece9;
  --shadow-sm: 0 2px 8px rgba(0, 168, 150, 0.06);
  --shadow-md: 0 8px 24px rgba(2, 128, 144, 0.08);
  --shadow-lg: 0 16px 36px rgba(5, 102, 141, 0.12);
  --radius: 12px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
}
body {
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}
.site-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}
header.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand-area {
  display: flex;
  align-items: center;
  gap: 12px;
}
.ai-page-logo {
  height: 40px;
  width: auto;
  display: block;
}
.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: -0.5px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  transition: all 0.25s ease;
}
.nav-links a:hover {
  color: var(--primary);
  background-color: var(--primary-light);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--teal-gradient);
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(0, 168, 150, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 168, 150, 0.4);
}
.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
}
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-main);
  cursor: pointer;
}
.hero-section {
  padding: 80px 0 60px;
  background: radial-gradient(circle at 80% 20%, rgba(0, 168, 150, 0.12) 0%, rgba(240, 250, 249, 0.5) 50%, #ffffff 100%);
  border-bottom: 1px solid var(--border-color);
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 168, 150, 0.2);
}
.hero-title {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 20px;
}
.hero-title span {
  background: var(--teal-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-stats-panel {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 30px;
  box-shadow: var(--shadow-md);
  position: relative;
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.stat-card {
  padding: 16px;
  background: #f8fcfb;
  border-radius: 10px;
  border: 1px solid #eef6f4;
}
.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 4px;
}
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
}
.section-wrapper {
  padding: 70px 0;
  border-bottom: 1px solid var(--border-color);
}
.section-wrapper:nth-child(even) {
  background-color: #ffffff;
}
.section-wrapper:nth-child(odd) {
  background-color: #f8fcfb;
}
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}
.section-tag {
  display: inline-block;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}
.section-heading {
  font-size: 32px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 14px;
}
.section-desc {
  font-size: 15px;
  color: var(--text-muted);
}
.models-pill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}
.model-pill {
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
  transition: all 0.2s ease;
}
.model-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 168, 150, 0.4);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 18px;
}
.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #0f172a;
}
.feature-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 30px;
}
.gallery-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.gallery-item-full {
  grid-column: span 2;
}
.gallery-img-box {
  width: 100%;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.gallery-img-box img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.gallery-info {
  padding: 20px;
}
.gallery-title {
  font-size: 17px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 6px;
}
.gallery-desc {
  font-size: 14px;
  color: var(--text-muted);
}
.review-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.avatar-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.review-user {
  font-weight: 700;
  font-size: 15px;
  color: #0f172a;
}
.review-role {
  font-size: 12px;
  color: var(--text-muted);
}
.review-stars {
  color: #f59e0b;
  font-size: 14px;
  margin-bottom: 12px;
}
.review-content {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
.table-container {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}
.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}
.custom-table th, .custom-table td {
  padding: 16px 20px;
  border-bottom: 1px solid #edf2f0;
}
.custom-table th {
  background: #f4faf8;
  font-weight: 700;
  color: var(--text-main);
}
.custom-table tr:last-child td {
  border-bottom: none;
}
.score-badge {
  background: #ecfdf5;
  color: #059669;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 13px;
  display: inline-block;
}
.timeline-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  position: relative;
}
.step-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}
.step-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.2s ease;
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 15px;
  color: #0f172a;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-icon {
  font-size: 18px;
  transition: transform 0.3s;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-answer {
  padding: 0 24px 18px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
  display: none;
}
.faq-item.active .faq-answer {
  display: block;
}
.contact-section-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
}
.contact-info-panel {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.contact-list {
  list-style: none;
  margin: 24px 0;
}
.contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--text-main);
}
.contact-qr-wrapper {
  margin-top: 24px;
  padding: 16px;
  background: #f8fcfb;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.contact-qr-wrapper img {
  width: 130px;
  height: 130px;
  border-radius: 4px;
}
.form-panel {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #0f172a;
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  background: #fcfdfe;
  transition: border-color 0.2s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: #ffffff;
}
textarea.form-control {
  resize: vertical;
  min-height: 100px;
}
.article-list-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.article-item-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 16px 20px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s;
}
.article-item-card:hover {
  border-color: var(--primary);
  background: #fafdfc;
}
.article-item-card a {
  color: #0f172a;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
.article-item-card a:hover {
  color: var(--primary);
}
.banner-tri-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}
.banner-tri-grid .ai-page-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}
.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 60px 0 30px;
  border-top: 1px solid #1e293b;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  color: #ffffff;
  font-size: 16px;
  margin-bottom: 18px;
  font-weight: 700;
}
.footer-col p {
  font-size: 14px;
  line-height: 1.7;
  color: #94a3b8;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: #ffffff;
}
.friend-links-box {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}
.friend-links-box a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 13px;
  background: #1e293b;
  padding: 4px 10px;
  border-radius: 4px;
  transition: all 0.2s;
}
.friend-links-box a:hover {
  color: #38bdf8;
  background: #334155;
}
.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid #1e293b;
  font-size: 13px;
  color: #64748b;
}
.float-kefu {
  position: fixed;
  right: 20px;
  bottom: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1px solid var(--border-color);
  transition: transform 0.2s;
  text-decoration: none;
  color: var(--primary-dark);
  font-size: 20px;
}
.float-btn:hover {
  transform: scale(1.08);
}
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .contact-section-grid {
    grid-template-columns: 1fr;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .gallery-item-full {
    grid-column: span 1;
  }
  .banner-tri-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--border-color);
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 30px;
  }
  .section-heading {
    font-size: 26px;
  }
}