:root {
  --primary: #10b981;
  --primary-light: #ecfdf5;
  --primary-dark: #047857;
  --accent: #059669;
  --mint-bg: #f2fbf7;
  --mint-surface: #e6f7f0;
  --text-main: #1f2937;
  --text-muted: #4b5563;
  --text-sub: #6b7280;
  --card-bg: #ffffff;
  --border-color: #d1fae5;
  --shadow-sm: 0 1px 3px rgba(16, 185, 129, 0.08);
  --shadow-md: 0 4px 12px rgba(16, 185, 129, 0.12);
  --shadow-lg: 0 10px 25px rgba(16, 185, 129, 0.15);
  --radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--mint-bg);
  color: var(--text-main);
  line-height: 1.6;
}
body {
  background: radial-gradient(circle at 10% 10%, #dcfce7 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, #ecfdf5 0%, transparent 40%),
              var(--mint-bg);
  min-height: 100vh;
}
a {
  color: inherit;
  text-decoration: none;
}
.site-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-dark);
}
.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: 500;
  color: var(--text-muted);
  transition: var(--transition);
  border-radius: 6px;
}
.nav-links li a:hover {
  color: var(--primary-dark);
  background-color: var(--primary-light);
}
.nav-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: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-align: center;
}
.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}
.btn-primary:hover {
  background-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(16, 185, 129, 0.4);
}
.btn-outline {
  background-color: #ffffff;
  border-color: var(--primary);
  color: var(--primary-dark);
}
.btn-outline:hover {
  background-color: var(--primary-light);
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  margin: 5px 0;
  transition: var(--transition);
}

/* 首屏 Hero (无图设计) */
.hero-section {
  padding: 70px 0 50px;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background: var(--mint-surface);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  color: var(--primary-dark);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 2.5rem;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 20px;
  font-weight: 800;
}
.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 36px;
}
.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-cta .btn-primary {
  font-size: 1.05rem;
  padding: 12px 30px;
}
.stat-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}
.stat-card {
  background: #ffffff;
  padding: 24px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 6px;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-sub);
}

/* 通用板块样式 */
.section {
  padding: 60px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 40px;
}
.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-dark);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.section-title {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-sub);
  max-width: 640px;
  margin: 0 auto;
}

/* 卡片栅格 */
.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;
}
.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-color);
  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: var(--primary);
}
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: bold;
  margin-bottom: 16px;
}
.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex-grow: 1;
}

/* 模型标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}
.model-tag {
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: var(--transition);
}
.model-tag:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-color: var(--primary);
}

/* 流程步骤 */
.steps-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.step-item {
  background: #ffffff;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  text-align: center;
  position: relative;
}
.step-number {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin: 0 auto 14px;
}
.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* 对比评测表格 */
.review-highlight {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 24px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.rating-box {
  display: flex;
  align-items: center;
  gap: 12px;
}
.stars {
  color: #f59e0b;
  font-size: 1.4rem;
  letter-spacing: 2px;
}
.score {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-dark);
}
.table-responsive {
  overflow-x: auto;
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 600px;
}
.custom-table th, .custom-table td {
  padding: 16px 20px;
  border-bottom: 1px solid #f3f4f6;
  font-size: 0.95rem;
}
.custom-table th {
  background: var(--mint-surface);
  color: var(--primary-dark);
  font-weight: 700;
}
.custom-table tr:last-child td {
  border-bottom: none;
}
.custom-table tr:hover td {
  background-color: #fafdfb;
}

/* 案例与素材图 */
.media-card {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.media-container {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--mint-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.media-container.square {
  aspect-ratio: 1/1;
}
.media-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.media-card:hover .media-container img {
  transform: scale(1.03);
}
.media-content {
  padding: 20px;
}

/* FAQ 折叠 */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  padding: 16px 20px;
  text-align: left;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.faq-question::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--primary);
  transition: transform 0.3s ease;
}
.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background: #fcfdfd;
}
.faq-answer-inner {
  padding: 0 20px 16px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

/* 评论卡片 */
.review-card {
  background: #ffffff;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.reviewer-info {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.reviewer-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}
.reviewer-meta h4 {
  font-size: 0.98rem;
  color: var(--text-main);
}
.reviewer-meta p {
  font-size: 0.82rem;
  color: var(--text-sub);
}
.review-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 表单与联系 */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: #ffffff;
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}
.form-group {
  margin-bottom: 16px;
}
.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 0.95rem;
  color: var(--text-main);
  background-color: #fdfdfd;
  transition: var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}
textarea.form-control {
  resize: vertical;
  min-height: 90px;
}
.qr-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  background: var(--mint-bg);
}
.qr-box img {
  max-width: 150px;
  height: auto;
  border-radius: 6px;
  margin-bottom: 12px;
}

/* 资讯与友情链接 */
.news-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}
.news-link-tag {
  padding: 6px 14px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.88rem;
  color: var(--text-muted);
}
.news-link-tag:hover {
  color: var(--primary-dark);
  border-color: var(--primary);
}

/* 页脚 */
.site-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  padding: 40px 0 24px;
  margin-top: 60px;
}
.footer-links-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f3f4f6;
}
.footer-links-group a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-links-group a:hover {
  color: var(--primary-dark);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--text-sub);
}

/* 浮动组件 */
.float-bar {
  position: fixed;
  right: 20px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 999;
}
.float-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-dark);
  cursor: pointer;
  transition: var(--transition);
  font-weight: bold;
}
.float-btn:hover {
  background: var(--primary);
  color: #ffffff;
}

/* 响应式调整 */
@media (max-width: 992px) {
  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-container {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 16px 0;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--border-color);
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links li {
    width: 100%;
    text-align: center;
  }
  .nav-links li a {
    width: 100%;
    padding: 10px 0;
  }
  .card-grid-4, .card-grid-3, .card-grid-2, .stat-cards, .steps-container {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 1.85rem;
  }
}