:root {
  --primary: #1e3a8a;
  --primary-accent: #2563eb;
  --secondary: #ff5722;
  --accent-gold: #f59e0b;
  --text-main: #0f172a;
  --text-muted: #475569;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 36px rgba(30, 58, 138, 0.12);
  --max-w: 1240px;
  --radius: 12px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.6;
}
body {
  width: 100%;
  overflow-x: hidden;
  background: radial-gradient(circle at 10% 10%, #e0e7ff 0%, #f8fafc 40%),
              radial-gradient(circle at 90% 80%, #ffedd5 0%, #f8fafc 40%);
  background-attachment: fixed;
}
a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s ease;
}
.site-container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section-space {
  padding-top: 80px;
  padding-bottom: 80px;
}
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 20px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--secondary), #ea580c);
  margin-bottom: 14px;
  box-shadow: 0 4px 12px rgba(255, 87, 34, 0.25);
  text-transform: uppercase;
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-muted);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  text-align: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary-accent), var(--primary));
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.4);
}
.btn-secondary {
  background: linear-gradient(135deg, var(--secondary), #d946ef);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(255, 87, 34, 0.3);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255, 87, 34, 0.45);
}
.btn-outline {
  background: #ffffff;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #ffffff;
}
/* Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand-area {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo-box {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.brand-meta {
  display: flex;
  flex-direction: column;
}
.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-item {
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
}
.nav-item:hover {
  color: var(--secondary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-main);
}
/* Hero Area - NO IMAGES */
.hero-wrapper {
  padding: 90px 0 70px 0;
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.8) 0%, rgba(241, 245, 249, 0.5) 100%);
  border-bottom: 1px solid var(--border-color);
}
.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 30px;
  color: var(--primary-accent);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 42px;
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 22px;
  letter-spacing: -1px;
}
.hero-title .highlight {
  color: var(--secondary);
  background: -webkit-linear-gradient(45deg, var(--secondary), #d946ef);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
}
.hero-cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}
.hero-indicators {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.indicator-card {
  background: #ffffff;
  padding: 24px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  text-align: center;
  border-top: 4px solid var(--primary-accent);
}
.indicator-card:nth-child(2) { border-top-color: var(--secondary); }
.indicator-card:nth-child(3) { border-top-color: #10b981; }
.indicator-card:nth-child(4) { border-top-color: var(--accent-gold); }
.indicator-val {
  font-size: 32px;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.1;
  margin-bottom: 6px;
}
.indicator-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}
/* Cards & Grids */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}
.card-header-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.card-icon-pill {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary-accent), var(--primary));
}
.card:nth-child(even) .card-icon-pill {
  background: linear-gradient(135deg, var(--secondary), #d946ef);
}
.card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}
.card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}
/* Models Supported Matrix */
.model-tags-wrapper {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}
.model-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.model-badge {
  display: inline-block;
  padding: 6px 14px;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
  transition: all 0.2s ease;
}
.model-badge:hover {
  background: var(--primary-accent);
  color: #ffffff;
  border-color: var(--primary-accent);
}
/* Flow / Steps */
.step-item {
  position: relative;
  background: #ffffff;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.step-num {
  font-size: 13px;
  font-weight: 800;
  color: var(--secondary);
  background: #fff7ed;
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
}
/* Comparison Rating & Score */
.review-highlight-box {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: #ffffff;
  border-radius: var(--radius);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-lg);
}
.review-score-pane {
  display: flex;
  align-items: center;
  gap: 20px;
}
.score-circle {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), #ff8a65);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  font-weight: 900;
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(255, 87, 34, 0.4);
}
.score-meta h4 {
  font-size: 22px;
  margin-bottom: 4px;
  color: #f8fafc;
}
.stars-row {
  color: #fbbf24;
  font-size: 18px;
  letter-spacing: 2px;
}
.table-responsive {
  width: 100%;
  overflow-x: auto;
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 680px;
}
.comparison-table th, .comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}
.comparison-table th {
  background: #f8fafc;
  color: var(--text-main);
  font-weight: 700;
}
.comparison-table tr:last-child td {
  border-bottom: none;
}
.col-highlight {
  background: rgba(37, 99, 235, 0.04);
  font-weight: 700;
  color: var(--primary);
}
/* Media Presentation */
.media-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.media-card {
  background: #ffffff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.media-img-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #f1f5f9;
  overflow: hidden;
}
.media-img-wrap.square {
  aspect-ratio: 1 / 1;
}
.media-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media-info {
  padding: 20px;
}
.media-info h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text-main);
}
.media-info p {
  font-size: 14px;
  color: var(--text-muted);
}
/* User Reviews */
.comment-card {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.comment-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.avatar-ph {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #e2e8f0;
  color: #334155;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.author-role {
  font-size: 12px;
  color: var(--text-muted);
}
.author-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}
.comment-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}
.faq-item {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  padding: 18px 24px;
  text-align: left;
  background: transparent;
  border: none;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.faq-icon {
  font-size: 20px;
  color: var(--primary-accent);
  transition: transform 0.25s ease;
}
.faq-answer {
  padding: 0 24px 18px 24px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: none;
}
.faq-item.active .faq-answer {
  display: block;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
/* Contact & Form */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}
.form-control {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
}
.form-control:focus {
  border-color: var(--primary-accent);
}
.contact-meta-box {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.qr-container {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #f8fafc;
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
  margin-top: 20px;
}
.qr-code-img {
  width: 100px;
  height: 100px;
  border-radius: 6px;
  object-fit: cover;
  border: 1px solid #cbd5e1;
}
/* Articles Section */
.article-links-container {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
}
.article-pill {
  display: block;
  padding: 12px 16px;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-pill:hover {
  border-color: var(--primary-accent);
  color: var(--primary-accent);
  background: #eff6ff;
}
/* Footer */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding-top: 60px;
  padding-bottom: 40px;
  border-top: 1px solid #1e293b;
}
.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 30px;
  margin-bottom: 40px;
}
.footer-col h4 {
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-links-list {
  list-style: none;
}
.footer-links-list li {
  margin-bottom: 10px;
  font-size: 14px;
}
.footer-links-list a:hover {
  color: #ffffff;
}
.friendly-links-block {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  margin-bottom: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.friendly-links-block span {
  font-size: 13px;
  color: #cbd5e1;
  font-weight: 600;
}
.friendly-links-block a {
  font-size: 13px;
  color: #94a3b8;
}
.friendly-links-block a:hover {
  color: #38bdf8;
}
.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
}
/* Sticky Floating Entry */
.floating-widget {
  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: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
  font-size: 20px;
  cursor: pointer;
  border: none;
  transition: transform 0.2s ease;
}
.float-btn.kefu-btn {
  background: var(--secondary);
}
.float-btn:hover {
  transform: scale(1.1);
}
/* Responsive */
@media (max-width: 992px) {
  .hero-indicators {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3, .grid-4, .media-grid, .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 20px 0;
    box-shadow: var(--shadow-md);
    display: none;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-links.show {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .header-actions {
    display: none;
  }
  .hero-title {
    font-size: 30px;
  }
  .grid-3, .grid-4, .grid-2, .media-grid, .article-grid, .contact-layout {
    grid-template-columns: 1fr;
  }
  .hero-indicators {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .review-highlight-box {
    flex-direction: column;
    align-items: flex-start;
  }
}