:root {
  --primary: #00b955;
  --primary-dark: #008f41;
  --primary-light: #e6f9ee;
  --primary-gradient: linear-gradient(135deg, #00b955 0%, #00d668 100%);
  --accent-gold: #f59e0b;
  --bg-page: #f6faf7;
  --bg-card: #ffffff;
  --text-main: #14231b;
  --text-muted: #52675b;
  --text-light: #7c9486;
  --border-color: #d8ebdffe;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 4px 12px rgba(0, 185, 85, 0.06);
  --shadow-md: 0 10px 30px rgba(0, 185, 85, 0.1);
  --shadow-lg: 0 20px 45px rgba(20, 35, 27, 0.08);
  --transition: all 0.28s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.site-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

.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);
  box-shadow: 0 2px 10px rgba(0, 185, 85, 0.05);
}

.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 {
  max-height: 42px;
  display: flex;
  align-items: center;
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.brand-tag {
  font-size: 0.75rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  border: 1px solid rgba(0, 185, 85, 0.2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.nav-links li a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  border-radius: var(--radius-sm);
}

.nav-links li a:hover,
.nav-links li a.active {
  color: var(--primary-dark);
  background: var(--primary-light);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 185, 85, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #00a44b 0%, #00c05d 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 185, 85, 0.45);
}

.btn-outline {
  background: #ffffff;
  color: var(--primary-dark);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.1rem;
  border-radius: var(--radius-lg);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--text-main);
  cursor: pointer;
  padding: 4px;
}

.hero-section {
  position: relative;
  background: radial-gradient(circle at 80% 20%, #d8f8e5 0%, #f6faf7 60%);
  padding: 70px 0 80px;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 185, 85, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(0, 185, 85, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 185, 85, 0); }
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title .highlight {
  color: var(--primary-dark);
  position: relative;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.metric-item {
  text-align: center;
  border-right: 1px solid var(--border-color);
  padding: 8px 12px;
}

.metric-item:last-child {
  border-right: none;
}

.metric-value {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.metric-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 600;
}

.section-padding {
  padding: 80px 0;
}

.section-bg-alt {
  background-color: #ffffff;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--primary-dark);
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}

.card-tag {
  align-self: flex-start;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  background: #f1f5f9;
  color: var(--text-muted);
}

.models-wall {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  margin-top: 40px;
}

.models-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 20px;
  text-align: center;
  color: var(--text-main);
}

.models-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.model-badge {
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  transition: var(--transition);
}

.model-badge:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-color: var(--primary);
  transform: scale(1.05);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.step-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.step-number {
  width: 40px;
  height: 40px;
  line-height: 40px;
  background: var(--primary);
  color: #ffffff;
  border-radius: 50%;
  font-weight: 800;
  font-size: 1.1rem;
  margin: 0 auto 16px;
  box-shadow: 0 4px 10px rgba(0, 185, 85, 0.3);
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.eval-summary-card {
  background: linear-gradient(135deg, #022c1b 0%, #064e3b 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
  box-shadow: var(--shadow-lg);
}

.eval-score-box {
  display: flex;
  align-items: center;
  gap: 24px;
}

.score-num {
  font-size: 3.6rem;
  font-weight: 900;
  color: #34d399;
  line-height: 1;
}

.score-info h3 {
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.stars {
  color: #facc15;
  font-size: 1.3rem;
  letter-spacing: 2px;
}

.eval-table-container {
  overflow-x: auto;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.eval-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.eval-table th,
.eval-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-color);
}

.eval-table th {
  background: #f8fafc;
  font-weight: 800;
  color: var(--text-main);
  font-size: 0.95rem;
}

.eval-table tr:hover td {
  background: var(--primary-light);
}

.eval-table .highlight-cell {
  color: var(--primary-dark);
  font-weight: 800;
}

.media-gallery {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 20px;
  margin-top: 30px;
}

.media-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.media-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.media-card:hover img {
  transform: scale(1.03);
}

.media-caption {
  padding: 16px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-main);
}

.form-wrapper {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--bg-page);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(0, 185, 85, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary);
}

.faq-question {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.faq-toggle-icon {
  font-size: 1.2rem;
  color: var(--primary-dark);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
}

.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: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px;
}

.testimonial-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.user-info h4 {
  font-size: 1rem;
  font-weight: 700;
}

.user-info p {
  font-size: 0.8rem;
  color: var(--text-light);
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.contact-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

.contact-detail h5 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.contact-detail p, .contact-detail a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.article-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.article-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.article-item:hover {
  border-color: var(--primary);
  transform: translateX(4px);
}

.article-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

.article-item:hover .article-link {
  color: var(--primary-dark);
}

.site-footer {
  background: #0f1c15;
  color: #c7d9ce;
  padding: 60px 0 30px;
  border-top: 3px solid var(--primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: #9cb3a6;
  margin-bottom: 20px;
}

.footer-column h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-column h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: #9cb3a6;
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 4px;
}

.footer-qr {
  text-align: center;
}

.footer-qr img {
  width: 110px;
  height: 110px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  padding: 4px;
  margin: 0 auto 8px;
}

.footer-qr span {
  font-size: 0.8rem;
  color: #9cb3a6;
  display: block;
}

.footer-bottom {
  border-top: 1px solid #1e3328;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #7c9688;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-friend-links a {
  color: #9cb3a6;
}

.footer-friend-links a:hover {
  color: #ffffff;
}

.floating-service {
  position: fixed;
  right: 20px;
  bottom: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  color: var(--primary-dark);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition);
  position: relative;
}

.float-btn:hover {
  background: var(--primary);
  color: #ffffff;
  transform: scale(1.1);
}

.float-qr-box {
  position: absolute;
  right: 60px;
  bottom: 0;
  width: 140px;
  background: #ffffff;
  padding: 12px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  display: none;
  text-align: center;
}

.float-qr-box img {
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.float-qr-box p {
  font-size: 0.75rem;
  color: var(--text-main);
  margin-top: 6px;
  font-weight: 600;
}

.float-btn.qr-btn:hover .float-qr-box {
  display: block;
}

@media (max-width: 992px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
  .metric-item:nth-child(2) {
    border-right: none;
  }
  .metric-item:nth-child(1),
  .metric-item:nth-child(2) {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .media-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: none;
    gap: 8px;
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links li a {
    width: 100%;
    padding: 10px 14px;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .grid-3, .grid-4, .grid-2 {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.full-width {
    grid-column: span 1;
  }
  .eval-summary-card {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }
  .eval-score-box {
    flex-direction: column;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}