:root {
  --primary: #FF2A6D;
  --secondary: #05D9E8;
  --accent: #FFBE0B;
  --violet: #7928CA;
  --dark: #121526;
  --body-text: #2D3748;
  --muted-text: #64748B;
  --bg-main: #FAFBFC;
  --bg-card: #FFFFFF;
  --border: #E8EEF5;
  --shadow: 0 14px 34px rgba(18, 21, 38, 0.07);
  --shadow-hover: 0 20px 42px rgba(255, 42, 109, 0.15);
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-main);
  color: var(--body-text);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid rgba(255, 42, 109, 0.12);
  transition: all 0.3s;
}
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-wrap {
  width: 140px;
  display: flex;
  align-items: center;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-links a {
  padding: 8px 12px;
  font-size: 0.92rem;
  font-weight: 600;
  color: #1F2937;
  border-radius: 6px;
  white-space: nowrap;
}
.nav-links a:hover {
  color: var(--primary);
  background: rgba(255, 42, 109, 0.06);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #FF2A6D, #FF5E36);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 22px;
  border-radius: 99px;
  box-shadow: 0 6px 18px rgba(255, 42, 109, 0.35);
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255, 42, 109, 0.45);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
  color: #121526;
  border: 2px solid #05D9E8;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 8px 20px;
  border-radius: 99px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-secondary:hover {
  background: #05D9E8;
  color: #000000;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--dark);
}

/* Sections Global */
.section {
  padding: 84px 0;
  position: relative;
}
.section-alt {
  background: linear-gradient(180deg, rgba(5, 217, 232, 0.04) 0%, rgba(255, 42, 109, 0.03) 100%);
}
.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 52px;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: linear-gradient(90deg, rgba(255, 42, 109, 0.12), rgba(5, 217, 232, 0.15));
  color: #FF2A6D;
  font-weight: 700;
  font-size: 0.84rem;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--muted-text);
  line-height: 1.7;
}

/* Hero Section (No Images Used) */
.hero-section {
  padding: 88px 0 68px;
  background: radial-gradient(circle at 10% 20%, rgba(255, 42, 109, 0.12) 0%, transparent 45%),
              radial-gradient(circle at 90% 80%, rgba(5, 217, 232, 0.15) 0%, transparent 45%),
              #FFFFFF;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.hero-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  padding: 6px 18px;
  border-radius: 99px;
  font-size: 0.88rem;
  font-weight: 700;
  border: 1px solid rgba(255, 42, 109, 0.3);
  box-shadow: 0 4px 14px rgba(255, 42, 109, 0.1);
  margin-bottom: 24px;
  color: #121526;
}
.hero-badge-pill span {
  background: #FF2A6D;
  color: #FFF;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 20px;
}
.hero-title {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1.25;
  color: var(--dark);
  max-width: 960px;
  margin-bottom: 22px;
}
.hero-title .highlight {
  background: linear-gradient(120deg, #FF2A6D 0%, #7928CA 60%, #05D9E8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: #4A5568;
  max-width: 820px;
  margin-bottom: 34px;
  line-height: 1.7;
}
.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-portal-btn {
  background: linear-gradient(135deg, #FF2A6D, #FF5E36);
  color: #FFFFFF !important;
  font-size: 1.1rem;
  font-weight: 800;
  padding: 14px 34px;
  border-radius: 99px;
  box-shadow: 0 8px 24px rgba(255, 42, 109, 0.4);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.hero-portal-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(255, 42, 109, 0.5);
}
.hero-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  width: 100%;
  margin-top: 10px;
}
.metric-box {
  background: #FFFFFF;
  border: 1px solid var(--border);
  padding: 24px 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.25s ease;
}
.metric-box:hover {
  transform: translateY(-4px);
  border-color: #05D9E8;
}
.metric-box .metric-value {
  font-size: 1.9rem;
  font-weight: 900;
  color: #FF2A6D;
  margin-bottom: 4px;
}
.metric-box .metric-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #121526;
}
.metric-box .metric-sub {
  font-size: 0.8rem;
  color: var(--muted-text);
  margin-top: 2px;
}

/* Models Matrix */
.matrix-container {
  background: #FFFFFF;
  border: 2px dashed rgba(5, 217, 232, 0.5);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 24px;
}
.matrix-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.model-badge {
  background: #F4F7FB;
  border: 1px solid #E2E8F0;
  color: #1E293B;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 8px;
  transition: all 0.2s;
}
.model-badge:hover {
  background: #FF2A6D;
  color: #FFFFFF;
  border-color: #FF2A6D;
  transform: scale(1.04);
}

/* Feature Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}
.card-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 42, 109, 0.4);
}
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(255, 42, 109, 0.15), rgba(5, 217, 232, 0.2));
  color: #FF2A6D;
  font-weight: 900;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 12px;
}
.card-desc {
  font-size: 0.94rem;
  color: var(--muted-text);
  line-height: 1.65;
  flex: 1;
}

/* Visual Media Section (Using Permitted Images) */
.media-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.media-box {
  background: #FFFFFF;
  border: 1px solid var(--border);
  padding: 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.media-box img {
  border-radius: 8px;
  width: 100%;
}
.media-caption {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--dark);
  margin-top: 12px;
  text-align: center;
}

/* Process Steps */
.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.step-card {
  background: #FFFFFF;
  border-top: 4px solid var(--primary);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 28px 20px;
  box-shadow: var(--shadow);
}
.step-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: #05D9E8;
  margin-bottom: 10px;
}
.step-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}
.step-detail {
  font-size: 0.88rem;
  color: var(--muted-text);
  line-height: 1.6;
}

/* Comparison Table */
.comparison-card {
  background: #FFFFFF;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.eval-badge-bar {
  background: linear-gradient(90deg, #FF2A6D, #7928CA);
  color: #FFF;
  padding: 16px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.eval-score-wrap {
  font-size: 1.25rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 12px;
}
.eval-stars {
  color: #FFBE0B;
  letter-spacing: 2px;
}
.eval-score-pill {
  background: #FFFFFF;
  color: #FF2A6D;
  padding: 3px 12px;
  border-radius: 99px;
  font-size: 0.95rem;
}
.table-responsive {
  width: 100%;
  overflow-x: auto;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.compare-table th, .compare-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 0.94rem;
}
.compare-table th {
  background: #F8FAFC;
  font-weight: 800;
  color: var(--dark);
}
.compare-table tr:hover td {
  background: rgba(5, 217, 232, 0.03);
}
.col-highlight {
  background: rgba(255, 42, 109, 0.04);
  font-weight: 700;
  color: #FF2A6D;
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.comment-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.comment-body {
  font-size: 0.94rem;
  color: #334155;
  line-height: 1.65;
  margin-bottom: 20px;
  position: relative;
}
.comment-user {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid #F1F5F9;
  padding-top: 14px;
}
.user-avatar-tag {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #05D9E8, #FF2A6D);
  color: #FFFFFF;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.user-info .user-name {
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--dark);
}
.user-info .user-role {
  font-size: 0.8rem;
  color: var(--muted-text);
}

/* FAQ Accordion */
.faq-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}
.faq-q {
  padding: 20px 24px;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  background: #FFF;
}
.faq-q:hover {
  color: var(--primary);
}
.faq-icon {
  font-size: 1.3rem;
  font-weight: 400;
  color: #05D9E8;
  transition: transform 0.3s;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-a {
  padding: 0 24px 20px;
  font-size: 0.94rem;
  color: #475569;
  line-height: 1.7;
  display: none;
  border-top: 1px dashed var(--border);
  margin-top: -4px;
  padding-top: 14px;
}
.faq-item.active .faq-a {
  display: block;
}

/* Form and Contact */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 36px;
}
.contact-info-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}
.info-block {
  margin-bottom: 24px;
}
.info-block-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}
.info-block-content {
  font-size: 0.95rem;
  color: var(--muted-text);
  line-height: 1.6;
}
.qr-container {
  margin-top: 16px;
  width: 140px;
  padding: 8px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
}
.form-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid #CBD5E1;
  border-radius: 8px;
  font-size: 0.95rem;
  color: #1E293B;
  outline: none;
  transition: border-color 0.2s;
  background: #FAFBFC;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  background: #FFFFFF;
}
.form-textarea {
  min-height: 110px;
  resize: vertical;
}
.form-submit-btn {
  width: 100%;
  background: linear-gradient(135deg, #FF2A6D, #7928CA);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.05rem;
  padding: 14px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}
.form-submit-btn:hover {
  opacity: 0.92;
}

/* Articles and Links */
.articles-box {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 40px;
}
.articles-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}
.article-pill-link {
  background: #F1F5F9;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #334155;
  transition: all 0.2s;
}
.article-pill-link:hover {
  background: #05D9E8;
  color: #000000;
}

/* Footer */
.site-footer {
  background: #0F1322;
  color: #94A3B8;
  padding: 60px 0 32px;
  border-top: 4px solid var(--primary);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 44px;
}
.footer-brand h4 {
  color: #FFFFFF;
  font-size: 1.4rem;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
}
.footer-links h5, .footer-contact h5 {
  color: #FFFFFF;
  font-size: 1.05rem;
  margin-bottom: 16px;
}
.footer-links ul li {
  margin-bottom: 10px;
}
.footer-links ul li a:hover {
  color: #05D9E8;
}
.footer-friend-links {
  border-top: 1px solid #1E293B;
  padding: 24px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-size: 0.85rem;
}
.footer-friend-links span {
  color: #E2E8F0;
  font-weight: 700;
}
.footer-friend-links a {
  color: #94A3B8;
}
.footer-friend-links a:hover {
  color: #FF2A6D;
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid #1E293B;
  padding-top: 24px;
  font-size: 0.84rem;
  color: #64748B;
}

/* Floating Hub */
.float-action-hub {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 990;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 800;
  color: #121526;
  border: 2px solid var(--primary);
  cursor: pointer;
  text-align: center;
  line-height: 1.1;
  transition: transform 0.2s;
}
.float-btn:hover {
  transform: scale(1.08);
  background: var(--primary);
  color: #FFFFFF;
}

/* Responsive */
@media (max-width: 992px) {
  .nav-links { display: none; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #FFFFFF;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    padding: 16px 24px;
  }
  .nav-toggle { display: block; }
  .cards-grid, .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .step-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .media-section-grid, .contact-layout, .footer-top { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero-title { font-size: 2.1rem; }
  .cards-grid, .testimonials-grid, .step-grid, .hero-metrics-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .nav-actions .btn-secondary { display: none; }
}