:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --accent: #f97316;
  --accent-light: #fff7ed;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-soft: #64748b;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --border-light: #e2e8f0;
  --border-focus: #93c5fd;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 30px -4px rgba(15, 23, 42, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.25s ease-in-out;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.65;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.header-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand-area {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo-wrap {
  width: 130px;
  display: flex;
  align-items: center;
}
.brand-title-badge {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid #bfdbfe;
}
.main-nav {
  display: flex;
  align-items: center;
}
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0;
}
.nav-links li a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}
.nav-links li a:hover {
  color: var(--primary);
  background-color: var(--primary-light);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
}
.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
}
.btn-accent {
  background-color: var(--accent);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.3);
}
.btn-accent:hover {
  background-color: #ea580c;
  transform: translateY(-1px);
}
.btn-outline {
  background-color: #ffffff;
  color: var(--primary);
  border-color: #bfdbfe;
}
.btn-outline:hover {
  background-color: var(--primary-light);
  border-color: var(--primary);
}
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 8px;
  cursor: pointer;
}
.menu-toggle svg {
  display: block;
  width: 22px;
  height: 22px;
  stroke: var(--text-main);
}
.hero-section {
  position: relative;
  padding: 70px 0 60px;
  background: linear-gradient(180deg, #ffffff 0%, #eff6ff 50%, #f8fafc 100%);
  border-bottom: 1px solid var(--border-light);
}
.hero-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 32px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid #bfdbfe;
  padding: 6px 16px;
  border-radius: 9999px;
  color: var(--primary-dark);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
}
.hero-title {
  font-size: 2.7rem;
  font-weight: 800;
  line-height: 1.25;
  color: #0f172a;
  max-width: 960px;
  letter-spacing: -0.02em;
}
.hero-title span {
  color: var(--primary);
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 50%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 820px;
  line-height: 1.7;
}
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
}
.hero-cta-group .btn {
  padding: 14px 30px;
  font-size: 1.05rem;
}
.hero-stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  width: 100%;
  margin-top: 24px;
}
.hero-stat-card {
  background: #ffffff;
  border: 1px solid #dbeafe;
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
}
.hero-stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #bfdbfe;
}
.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.hero-stat-label {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin-top: 4px;
}
.section {
  padding: 80px 0;
  position: relative;
}
.section-alt {
  background-color: #ffffff;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}
.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 4px 12px;
  border-radius: 9999px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
}
.section-subtitle {
  margin-top: 12px;
  font-size: 1.05rem;
  color: var(--text-muted);
}
.models-scroll-zone {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  padding: 24px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.model-pill {
  font-size: 0.85rem;
  font-weight: 600;
  color: #334155;
  background: #f1f5f9;
  padding: 6px 14px;
  border-radius: 9999px;
  border: 1px solid #e2e8f0;
  transition: var(--transition);
}
.model-pill:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: #bfdbfe;
  transform: translateY(-2px);
}
.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;
}
.cards-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.feature-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #bfdbfe;
}
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.card-icon svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}
.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  flex-grow: 1;
}
.feature-card .card-foot {
  margin-top: 18px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process-timeline::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 5%;
  right: 5%;
  height: 2px;
  background: #cbd5e1;
  z-index: 1;
}
.process-step {
  position: relative;
  z-index: 2;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.step-number {
  width: 50px;
  height: 50px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  font-size: 1.2rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 4px solid #ffffff;
  box-shadow: 0 0 0 2px #bfdbfe;
}
.process-step h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.process-step p {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.eval-card {
  background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
  border: 2px solid #86efac;
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 36px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.eval-score-box {
  display: flex;
  align-items: center;
  gap: 24px;
}
.eval-rating {
  background: #16a34a;
  color: #ffffff;
  font-size: 2.2rem;
  font-weight: 900;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}
.eval-rating span {
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: 4px;
  opacity: 0.9;
}
.eval-summary h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #14532d;
  margin-bottom: 6px;
}
.stars-row {
  color: #eab308;
  font-size: 1.3rem;
  letter-spacing: 2px;
}
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}
.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 680px;
}
.custom-table th,
.custom-table td {
  padding: 16px 20px;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.95rem;
}
.custom-table th {
  background-color: #f1f5f9;
  font-weight: 700;
  color: var(--text-main);
}
.custom-table tr:hover td {
  background-color: #f8fafc;
}
.badge-highlight {
  background-color: #dcfce7;
  color: #15803d;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
}
.media-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 30px;
}
.media-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.media-card-img-wrap {
  aspect-ratio: 16/9;
  overflow: hidden;
  background-color: #f1f5f9;
}
.media-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.media-card:hover .media-card-img-wrap img {
  transform: scale(1.03);
}
.media-card-body {
  padding: 20px;
}
.media-card-body h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.media-card-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.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-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.review-body {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #f1f5f9;
  padding-top: 16px;
}
.avatar-placeholder {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #dbeafe;
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.author-info h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}
.author-info span {
  font-size: 0.8rem;
  color: var(--text-soft);
}
.faq-accordion {
  max-width: 880px;
  margin: 0 auto;
}
.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  padding: 18px 24px;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
}
.faq-question:hover {
  background-color: #f8fafc;
}
.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.25s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background-color: #fafbfc;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}
.faq-answer-inner {
  padding: 16px 24px 20px;
  border-top: 1px solid #f1f5f9;
}
.contact-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-panel {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.contact-method-list {
  list-style: none;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-method-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.95rem;
  color: var(--text-muted);
}
.qr-code-wrapper {
  margin-top: 24px;
  padding: 16px;
  background: #f8fafc;
  border-radius: var(--radius-md);
  border: 1px dashed #cbd5e1;
  display: flex;
  align-items: center;
  gap: 20px;
}
.qr-img {
  width: 110px;
  height: 110px;
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  padding: 4px;
  border: 1px solid #e2e8f0;
}
.form-box {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.9rem;
  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-md);
  font-size: 0.95rem;
  background-color: #f8fafc;
  transition: var(--transition);
}
.form-control:focus {
  outline: none;
  background-color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
textarea.form-control {
  min-height: 110px;
  resize: vertical;
}
.article-pills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.article-link-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.article-link-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: var(--primary-light);
}
.site-footer {
  background-color: #0f172a;
  color: #cbd5e1;
  padding: 60px 0 24px;
  border-top: 1px solid #1e293b;
}
.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 40px;
}
.footer-col h4 {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
}
.footer-links-list a:hover {
  color: #ffffff;
}
.friend-links-box {
  border-top: 1px solid #334155;
  padding-top: 24px;
  margin-bottom: 24px;
}
.friend-links-box h5 {
  color: #94a3b8;
  font-size: 0.85rem;
  margin-bottom: 12px;
}
.friend-links-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.friend-links-group a {
  color: #cbd5e1;
  font-size: 0.85rem;
  background: #1e293b;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}
.friend-links-group a:hover {
  background: #334155;
  color: #ffffff;
}
.footer-bottom-bar {
  border-top: 1px solid #1e293b;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #64748b;
}
.floating-support-bubble {
  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;
  border: 1px solid #cbd5e1;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-main);
}
.float-btn:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: scale(1.05);
}
@media (max-width: 1024px) {
  .cards-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-timeline::before {
    display: none;
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    padding: 16px 20px;
    flex-direction: column;
    align-items: flex-start;
  }
  .main-nav.show {
    display: flex;
  }
  .nav-links {
    flex-direction: column;
    width: 100%;
    align-items: flex-start;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links li a {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid #f1f5f9;
  }
  .nav-actions {
    margin-left: 0;
    margin-top: 14px;
    width: 100%;
    flex-direction: column;
  }
  .nav-actions .btn {
    width: 100%;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .cards-grid-3,
  .cards-grid-2,
  .reviews-grid,
  .media-showcase-grid,
  .contact-section-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
}