:root {
  --primary: #e0245e;
  --primary-hover: #c4184e;
  --primary-light: #fff0f4;
  --accent: #ff4081;
  --text-main: #1f2329;
  --text-muted: #5f6672;
  --text-light: #8f95a0;
  --bg-page: #fdfafb;
  --bg-card: #ffffff;
  --border-color: #f7d6e0;
  --border-light: #fcecef;
  --shadow-sm: 0 4px 12px rgba(224, 36, 94, 0.05);
  --shadow-md: 0 8px 24px rgba(224, 36, 94, 0.08);
  --shadow-lg: 0 16px 36px rgba(224, 36, 94, 0.12);
  --radius-md: 12px;
  --radius-lg: 18px;
  --transition: all 0.28s ease;
  --container-width: 1240px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  font-size: 15px;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
.site-container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}
.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);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand-box {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-box .ai-page-logo {
  height: 42px;
  width: auto;
  object-fit: contain;
}
.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.nav-menu {
  display: flex;
  align-items: center;
}
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0;
}
.nav-links a {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  border-radius: 6px;
}
.nav-links a:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: 8px;
  padding: 10px 22px;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(224, 36, 94, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(224, 36, 94, 0.4);
  color: #fff;
}
.btn-outline {
  border-color: var(--border-color);
  background: #fff;
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  margin: 5px 0;
  transition: var(--transition);
}
.hero-section {
  padding: 88px 0 64px;
  background: radial-gradient(circle at 50% 10%, rgba(224, 36, 94, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
  text-align: center;
  position: relative;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  border: 1px solid var(--border-color);
  color: var(--primary);
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 800;
  color: #1a1e24;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-desc {
  max-width: 820px;
  margin: 0 auto 36px;
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.btn-large {
  padding: 14px 34px;
  font-size: 16px;
  border-radius: 10px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}
.stat-card {
  background: #fff;
  border: 1px solid var(--border-light);
  padding: 24px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-color);
}
.stat-card .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}
.stat-card .label {
  font-size: 14px;
  color: var(--text-muted);
}
.section-block {
  padding: 72px 0;
}
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}
.section-badge {
  display: inline-block;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 12px;
  border: 1px solid var(--border-color);
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
}
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.info-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-color);
}
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 18px;
  border: 1px solid var(--border-color);
}
.info-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.info-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}
.step-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.step-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.step-no {
  font-size: 32px;
  font-weight: 900;
  color: rgba(224, 36, 94, 0.18);
  position: absolute;
  top: 14px;
  right: 18px;
}
.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}
.step-item p {
  font-size: 13px;
  color: var(--text-muted);
}
.model-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.model-tag {
  background: #fff;
  border: 1px solid var(--border-light);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: 0 2px 6px rgba(0,0,0,0.02);
  transition: var(--transition);
}
.model-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.img-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.img-container {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #f4f5f8;
  overflow: hidden;
}
.img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.img-card:hover .img-container img {
  transform: scale(1.03);
}
.img-meta {
  padding: 20px;
}
.img-meta h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}
.img-meta p {
  font-size: 13px;
  color: var(--text-muted);
}
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.avatar-badge {
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  border: 1px solid var(--border-color);
}
.review-header h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}
.review-header span {
  font-size: 12px;
  color: var(--text-light);
}
.review-stars {
  color: #ff9800;
  font-size: 13px;
  margin-bottom: 10px;
}
.review-body {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
.table-responsive {
  width: 100%;
  overflow-x: auto;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.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: 14px;
}
.compare-table th {
  background: var(--primary-light);
  color: var(--text-main);
  font-weight: 700;
}
.compare-table tr:hover td {
  background-color: #fffbfe;
}
.highlight-cell {
  color: var(--primary);
  font-weight: 700;
}
.faq-wrap {
  max-width: 920px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--border-color);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.faq-question span.arrow {
  color: var(--primary);
  font-weight: 700;
  transition: transform 0.25s ease;
}
.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 {
  padding: 0 24px 20px;
  max-height: 200px;
}
.faq-item.active .arrow {
  transform: rotate(180deg);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 36px;
}
.contact-details {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}
.contact-item-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}
.contact-item-text h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}
.contact-item-text p {
  font-size: 14px;
  color: var(--text-muted);
}
.qr-preview {
  margin-top: 20px;
  padding: 16px;
  border-radius: 8px;
  background: #faf8f9;
  border: 1px dashed var(--border-color);
  display: inline-flex;
  align-items: center;
  gap: 16px;
}
.qr-preview img {
  width: 90px;
  height: 90px;
  border-radius: 6px;
  object-fit: cover;
}
.form-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.form-group {
  margin-bottom: 18px;
}
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-main);
  background: #fff;
  transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(224, 36, 94, 0.1);
}
.form-textarea {
  resize: vertical;
  min-height: 100px;
}
.articles-box {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.article-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 14px;
}
.article-links a {
  padding: 10px 14px;
  background: #fdfafb;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-main);
}
.article-links a:hover {
  background: var(--primary-light);
  border-color: var(--border-color);
  color: var(--primary);
}
.site-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-light);
  padding: 56px 0 28px;
  color: var(--text-main);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 36px;
  margin-bottom: 40px;
}
.footer-brand h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-main);
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 8px;
}
.footer-col a {
  color: var(--text-muted);
  font-size: 13px;
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
  margin-bottom: 24px;
}
.footer-friend-links a {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-friend-links a:hover {
  color: var(--primary);
}
.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
  font-size: 13px;
  color: var(--text-light);
}
.floating-widget {
  position: fixed;
  bottom: 30px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.floating-btn {
  width: 48px;
  height: 48px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}
.floating-btn:hover {
  background: var(--primary);
  color: #fff;
}
.floating-popover {
  position: absolute;
  right: 58px;
  bottom: 0;
  background: #fff;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  display: none;
  width: 170px;
  text-align: center;
}
.floating-popover img {
  width: 138px;
  height: 138px;
  border-radius: 6px;
  margin-bottom: 8px;
}
.floating-popover span {
  font-size: 12px;
  color: var(--text-muted);
}
.floating-btn:hover .floating-popover {
  display: block;
}
@media (max-width: 992px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .step-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .review-grid {
    grid-template-columns: 1fr;
  }
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-menu {
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid var(--border-light);
    flex-direction: column;
    padding: 16px 24px;
    display: none;
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-links {
    flex-direction: column;
    width: 100%;
    align-items: flex-start;
  }
  .nav-links a {
    width: 100%;
    padding: 10px 0;
  }
  .header-actions {
    display: none;
  }
  .hero-title {
    font-size: 28px;
  }
  .card-grid-3, .card-grid-4, .step-list {
    grid-template-columns: 1fr;
  }
  .article-links {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}