:root {
  --primary-color: #0fa36b;
  --primary-dark: #097048;
  --mint-light: #e8f7f0;
  --mint-soft: #f2faf6;
  --mint-border: #c4ebd6;
  --mint-accent: #2ecc71;
  --text-main: #183327;
  --text-muted: #4e6b5d;
  --bg-page: #f6fbf8;
  --bg-white: #ffffff;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 4px 14px rgba(15, 163, 107, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 163, 107, 0.10);
  --shadow-lg: 0 18px 40px rgba(15, 163, 107, 0.14);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
}
body {
  line-height: 1.65;
  background: linear-gradient(180deg, #edf8f3 0%, #f7fbf9 240px, #f6fbf8 100%);
  overflow-x: hidden;
}
.site-container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: all 0.25s ease;
}
a:hover {
  color: var(--primary-dark);
}
.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(--mint-border);
}
.site-header .site-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.nav-brand-group {
  display: flex;
  align-items: center;
  gap: 16px;
}
.site-logo {
  height: 44px;
  display: flex;
  align-items: center;
}
.site-logo img {
  height: 40px;
  width: auto;
  object-fit: contain;
}
.ai-page-home-link {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-main);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--mint-light);
}
.ai-page-home-link:hover {
  background: var(--mint-border);
  color: var(--primary-dark);
}
.site-nav {
  display: flex;
  align-items: center;
}
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0;
}
.nav-links li a {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}
.nav-links li a:hover {
  color: var(--primary-color);
  background: var(--mint-soft);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 30px;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #18b67a 0%, #0da068 100%);
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(15, 163, 107, 0.28);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #139f6a 0%, #0a8757 100%);
  box-shadow: 0 6px 18px rgba(15, 163, 107, 0.38);
  transform: translateY(-1px);
}
.btn-outline {
  background: #ffffff;
  color: var(--primary-color) !important;
  border: 1px solid var(--mint-border);
}
.btn-outline:hover {
  background: var(--mint-light);
  border-color: var(--primary-color);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  width: 100%;
  height: 2.5px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s;
}
.hero-section {
  padding: 80px 0 60px;
  position: relative;
  background: radial-gradient(circle at 80% 20%, rgba(205, 244, 225, 0.6) 0%, rgba(246, 251, 248, 0) 60%),
              radial-gradient(circle at 10% 80%, rgba(214, 246, 230, 0.5) 0%, rgba(246, 251, 248, 0) 50%);
}
.hero-wrapper {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--mint-light);
  border: 1px solid var(--mint-border);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
}
.hero-badge::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--mint-accent);
}
.hero-title {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 34px;
  line-height: 1.7;
}
.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-cta-group .btn {
  font-size: 16px;
  padding: 13px 32px;
}
.hero-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 10px;
}
.metric-card {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  padding: 24px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
}
.metric-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1.1;
  margin-bottom: 6px;
}
.metric-label {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}
.content-section {
  padding: 70px 0;
  position: relative;
}
.section-alt {
  background-color: #f1f8f4;
  border-top: 1px solid #e2f0e8;
  border-bottom: 1px solid #e2f0e8;
}
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary-color);
  background: var(--mint-light);
  padding: 4px 12px;
  border-radius: 6px;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.section-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}
.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;
}
.feature-card {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  padding: 28px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.feature-icon-box {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--mint-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 20px;
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}
.feature-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.feature-tag-list span {
  font-size: 12px;
  background: var(--mint-soft);
  color: var(--primary-dark);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid #d9f1e4;
}
.model-tags-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}
.model-chip {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  color: var(--text-main);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}
.model-chip:hover {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.about-content h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-main);
}
.about-content p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}
.about-list {
  list-style: none;
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.about-list li {
  font-size: 14px;
  color: var(--text-main);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.about-list li::before {
  content: "✓";
  color: var(--primary-color);
  font-weight: bold;
}
.about-visual-box {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-md);
}
.about-visual-box .stat-row {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid #eef5f1;
}
.about-visual-box .stat-row:last-child {
  border-bottom: none;
}
.stat-row span {
  font-size: 14px;
  color: var(--text-muted);
}
.stat-row strong {
  color: var(--primary-color);
  font-size: 15px;
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}
.step-item {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  padding: 24px 16px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.step-item::after {
  content: "→";
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--primary-color);
  font-weight: 700;
  z-index: 2;
}
.step-item:last-child::after {
  display: none;
}
.step-num {
  width: 36px;
  height: 36px;
  background: var(--mint-light);
  color: var(--primary-color);
  font-weight: 800;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  border: 1px solid var(--mint-border);
}
.step-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.step-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}
.case-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.case-img-wrap {
  width: 100%;
  overflow: hidden;
  background: #e8f4ed;
}
.case-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.case-card:hover .case-img-wrap img {
  transform: scale(1.03);
}
.case-body {
  padding: 20px;
  flex-grow: 1;
}
.case-body h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.case-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}
.table-container {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-md);
  margin-bottom: 24px;
}
.eval-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 680px;
}
.eval-table th, .eval-table td {
  padding: 16px 20px;
  border-bottom: 1px solid #edf4f0;
  font-size: 14px;
}
.eval-table th {
  background: #f4fbf7;
  color: var(--text-main);
  font-weight: 700;
}
.eval-table tr:hover {
  background-color: #fbfefc;
}
.eval-table .highlight-col {
  background: #f0faf5;
  font-weight: 600;
  color: var(--primary-color);
}
.eval-badge-box {
  background: linear-gradient(135deg, #0fa36b 0%, #07794e 100%);
  color: #ffffff;
  padding: 24px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.eval-badge-left h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}
.eval-badge-left p {
  font-size: 14px;
  opacity: 0.9;
}
.eval-score-num {
  font-size: 38px;
  font-weight: 800;
  color: #ffffff;
}
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq-question:hover {
  color: var(--primary-color);
}
.faq-toggle-icon {
  font-size: 20px;
  font-weight: 400;
  color: var(--primary-color);
  transition: transform 0.25s ease;
}
.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background: #fafdfb;
}
.faq-answer-inner {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.review-rating {
  color: #ffb703;
  margin-bottom: 12px;
  font-size: 16px;
}
.review-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.author-avatar-char {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--mint-light);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}
.author-meta h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}
.author-meta span {
  font-size: 12px;
  color: var(--text-muted);
}
.form-box {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  max-width: 820px;
  margin: 0 auto;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group.full-width {
  grid-column: span 2;
}
.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #cce5d7;
  border-radius: var(--radius-sm);
  background: #fafdfc;
  font-size: 14px;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary-color);
  background: #ffffff;
}
.form-textarea {
  resize: vertical;
  min-height: 110px;
}
.articles-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}
.article-item {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}
.article-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
}
.article-item h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.article-item h4 a {
  color: var(--text-main);
}
.article-item h4 a:hover {
  color: var(--primary-color);
}
.article-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 36px;
}
.contact-info-panel {
  background: #ffffff;
  border: 1px solid var(--mint-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}
.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--mint-light);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.contact-text h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.contact-text p {
  font-size: 14px;
  color: var(--text-muted);
}
.qr-block {
  text-align: center;
  padding: 16px;
  background: var(--mint-soft);
  border-radius: var(--radius-md);
  border: 1px dashed var(--mint-border);
  margin-top: 10px;
}
.qr-block img {
  width: 130px;
  height: 130px;
  display: inline-block;
  margin-bottom: 8px;
  border-radius: 6px;
}
.qr-block p {
  font-size: 13px;
  color: var(--text-muted);
}
.site-footer {
  background-color: #0d261b;
  color: #c9ded3;
  padding: 60px 0 24px;
  border-top: 3px solid var(--primary-color);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 36px;
  margin-bottom: 40px;
}
.footer-col h5 {
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col p {
  font-size: 13px;
  line-height: 1.7;
  color: #a3c2b1;
  margin-bottom: 14px;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 9px;
}
.footer-links a {
  color: #b7d1c3;
  font-size: 13px;
}
.footer-links a:hover {
  color: #55efc4;
}
.friend-links-box {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 30px;
}
.friend-links-title {
  font-size: 13px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}
.friend-links-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.friend-links-wrap a {
  color: #a4c9b5;
  font-size: 12px;
}
.friend-links-wrap a:hover {
  color: #2ecc71;
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  font-size: 13px;
  color: #8dafa0;
}
.float-widget {
  position: fixed;
  right: 20px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 999;
}
.float-btn {
  width: 46px;
  height: 46px;
  background: #ffffff;
  border: 1px solid var(--mint-border);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 18px;
  cursor: pointer;
  transition: all 0.25s;
  text-decoration: none;
}
.float-btn:hover {
  background: var(--primary-color);
  color: #ffffff;
  transform: scale(1.08);
}
@media (max-width: 992px) {
  .hero-title {
    font-size: 34px;
  }
  .card-grid-3, .case-card-grid, .reviews-grid, .articles-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-grid-4, .hero-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .step-item::after {
    display: none;
  }
  .about-grid, .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 16px 20px;
    border-bottom: 1px solid var(--mint-border);
    box-shadow: var(--shadow-md);
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links li a {
    padding: 12px;
  }
  .nav-toggle {
    display: flex;
  }
}
@media (max-width: 600px) {
  .hero-title {
    font-size: 26px;
  }
  .card-grid-3, .card-grid-4, .case-card-grid, .reviews-grid, .articles-list, .hero-metrics-grid {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.full-width {
    grid-column: span 1;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  .hero-cta-group .btn {
    width: 100%;
  }
}