:root {
  --primary-color: #ff3366;
  --secondary-color: #7928ca;
  --accent-color: #0070f3;
  --highlight-color: #ff0080;
  --gradient-rainbow: linear-gradient(135deg, #ff0080 0%, #7928ca 40%, #0070f3 75%, #00dfd8 100%);
  --gradient-warm: linear-gradient(135deg, #ff3366 0%, #ff6b35 100%);
  --gradient-cool: linear-gradient(135deg, #0070f3 0%, #00dfd8 100%);
  --bg-page: #fbfbfe;
  --bg-card: #ffffff;
  --bg-card-soft: #f4f6fb;
  --text-main: #111827;
  --text-regular: #374151;
  --text-muted: #6b7280;
  --border-light: #e5e7eb;
  --border-vibrant: #ff008033;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px rgba(121, 40, 202, 0.08);
  --shadow-lg: 0 20px 40px rgba(255, 0, 128, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --container-width: 1200px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-regular);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: radial-gradient(circle at 10% 20%, rgba(255, 0, 128, 0.03) 0%, transparent 40%),
                    radial-gradient(circle at 90% 80%, rgba(0, 112, 243, 0.03) 0%, transparent 40%);
}
a {
  color: inherit;
  text-decoration: none;
  transition: all 0.3s ease;
}
ul, ol {
  list-style: none;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.site-container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.8);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand-box {
  display: flex;
  align-items: center;
  gap: 12px;
}
.ai-page-logo {
  max-height: 42px;
  width: auto;
  object-fit: contain;
}
.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  background: var(--gradient-rainbow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-link-item {
  padding: 8px 14px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-regular);
  position: relative;
  transition: color 0.2s ease;
}
.nav-link-item:hover {
  color: var(--primary-color);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: none;
  text-align: center;
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn-primary {
  background: var(--gradient-rainbow);
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(255, 0, 128, 0.3);
}
.btn-secondary {
  background: #ffffff;
  color: var(--text-main);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}
.btn-accent {
  background: var(--gradient-warm);
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(255, 51, 102, 0.3);
}
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-main);
  padding: 6px;
}
.section-wrapper {
  padding: 80px 0;
  position: relative;
}
.section-wrapper.bg-soft {
  background-color: var(--bg-card-soft);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.section-heading {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}
.section-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 0, 128, 0.08);
  color: var(--highlight-color);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  letter-spacing: 0.5px;
  border: 1px solid var(--border-vibrant);
}
.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}
.hero-section {
  padding: 90px 0 70px 0;
  text-align: center;
  position: relative;
  background: radial-gradient(circle at 50% 30%, rgba(255, 51, 102, 0.06) 0%, rgba(121, 40, 202, 0.04) 50%, transparent 80%);
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-regular);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.hero-tag span {
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
}
.hero-main-title {
  font-size: 3rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-main-title .gradient-text {
  background: var(--gradient-rainbow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtext {
  font-size: 1.2rem;
  color: var(--text-regular);
  max-width: 840px;
  margin: 0 auto 36px auto;
  line-height: 1.6;
}
.hero-action-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}
.hero-feature-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  max-width: 960px;
  margin: 0 auto;
}
.feature-pill {
  background: #ffffff;
  border: 1px solid var(--border-light);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-regular);
  box-shadow: 0 2px 6px rgba(0,0,0,0.02);
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: -30px;
  margin-bottom: 50px;
  position: relative;
  z-index: 10;
}
.metric-card {
  background: #ffffff;
  padding: 24px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  text-align: center;
  transition: transform 0.3s ease;
}
.metric-card:hover {
  transform: translateY(-4px);
}
.metric-number {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-warm);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 6px;
}
.metric-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-box {
  background: #ffffff;
  padding: 30px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.service-box:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 0, 128, 0.3);
}
.service-icon-bar {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--gradient-rainbow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.service-box h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.service-box p {
  font-size: 0.95rem;
  color: var(--text-regular);
  line-height: 1.55;
  flex-grow: 1;
}
.workflow-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.workflow-step {
  background: #ffffff;
  padding: 26px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.step-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: rgba(121, 40, 202, 0.15);
  line-height: 1;
  position: absolute;
  top: 15px;
  right: 15px;
}
.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.step-text {
  font-size: 0.9rem;
  color: var(--text-regular);
  line-height: 1.5;
}
.models-marquee-box {
  background: #ffffff;
  padding: 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.model-tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.model-tag-item {
  background: var(--bg-card-soft);
  border: 1px solid var(--border-light);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  transition: all 0.2s ease;
}
.model-tag-item:hover {
  background: var(--gradient-rainbow);
  color: #ffffff;
  border-color: transparent;
  transform: translateY(-2px);
}
.compare-container {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.compare-rating-banner {
  background: var(--gradient-rainbow);
  padding: 24px;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 15px;
}
.rating-info-title {
  font-size: 1.4rem;
  font-weight: 800;
}
.rating-badges-group {
  display: flex;
  align-items: center;
  gap: 16px;
}
.score-badge {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 1.1rem;
}
.compare-table-responsive {
  width: 100%;
  overflow-x: auto;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.compare-table th, .compare-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.95rem;
}
.compare-table th {
  background: #f9fafb;
  color: var(--text-main);
  font-weight: 700;
}
.compare-table tr:hover td {
  background-color: #faf5ff;
}
.highlight-cell {
  color: var(--primary-color);
  font-weight: 700;
}
.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;
  justify-content: space-between;
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-warm);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}
.reviewer-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}
.reviewer-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.review-body {
  font-size: 0.95rem;
  color: var(--text-regular);
  line-height: 1.6;
  margin-bottom: 16px;
}
.review-stars {
  color: #f59e0b;
  font-size: 0.9rem;
}
.gallery-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}
.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  background: #ffffff;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.gallery-item:hover img {
  transform: scale(1.02);
}
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  background: #ffffff;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.faq-question:hover {
  color: var(--primary-color);
}
.faq-icon {
  font-size: 1.2rem;
  font-weight: 400;
  transition: transform 0.3s ease;
}
.faq-answer {
  padding: 0 20px 18px 20px;
  font-size: 0.95rem;
  color: var(--text-regular);
  line-height: 1.6;
  border-top: 1px solid #f3f4f6;
  padding-top: 12px;
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  padding: 40px;
}
.contact-info-col h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 20px;
}
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 30px;
}
.contact-info-entry {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-regular);
}
.contact-icon-bubble {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 0, 128, 0.1);
  color: var(--highlight-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.qr-code-wrapper {
  text-align: center;
  max-width: 180px;
  padding: 12px;
  background: #f9fafb;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
}
.qr-code-wrapper img {
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}
.qr-code-wrapper p {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}
.form-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  background: #ffffff;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 51, 102, 0.15);
}
.articles-list-box {
  background: #ffffff;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.article-links-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
}
.article-link-tag {
  background: #f4f6fb;
  border: 1px solid var(--border-light);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-regular);
  font-weight: 600;
  transition: all 0.2s ease;
}
.article-link-tag:hover {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}
.site-footer {
  background: #111827;
  color: #9ca3af;
  padding: 60px 0 30px 0;
  border-top: 1px solid #1f2937;
}
.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 30px;
  margin-bottom: 40px;
}
.footer-brand h4 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
}
.footer-col h5 {
  font-size: 1rem;
  font-weight: 700;
  color: #f3f4f6;
  margin-bottom: 16px;
}
.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links-list a {
  color: #9ca3af;
  font-size: 0.9rem;
}
.footer-links-list a:hover {
  color: #ffffff;
}
.footer-friends-bar {
  border-top: 1px solid #1f2937;
  padding: 24px 0;
  margin-bottom: 20px;
}
.friends-links-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}
.friends-links-inline a {
  color: #9ca3af;
}
.friends-links-inline a:hover {
  color: #ff3366;
}
.footer-bottom-bar {
  border-top: 1px solid #1f2937;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #6b7280;
}
.floating-widget {
  position: fixed;
  right: 24px;
  bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}
.float-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-main);
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: transform 0.2s ease;
}
.float-btn:hover {
  transform: scale(1.1);
}
.float-btn.kefu-btn {
  background: var(--gradient-rainbow);
  color: #ffffff;
  border: none;
}
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .workflow-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    border-bottom: 1px solid var(--border-light);
  }
  .nav-links.active {
    display: flex;
  }
  .nav-link-item {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid #f3f4f6;
  }
  .hero-main-title {
    font-size: 2.2rem;
  }
  .hero-subtext {
    font-size: 1rem;
  }
  .services-grid, .reviews-grid, .faq-grid, .gallery-grid, .contact-layout {
    grid-template-columns: 1fr;
  }
  .metrics-grid {
    grid-template-columns: 1fr 1fr;
  }
  .workflow-row {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .contact-layout {
    padding: 20px;
  }
}