:root {
  --primary: #FFB800;
  --primary-hover: #FFA000;
  --primary-light: #FFF9E6;
  --primary-border: #FFE082;
  --accent-yellow: #FFD600;
  --dark: #1E1E24;
  --dark-light: #2B2B36;
  --text-main: #2D3142;
  --text-muted: #6B7280;
  --bg-page: #FAF9F6;
  --bg-card: #FFFFFF;
  --border-color: #EFECE6;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 24px rgba(255,184,0,0.12);
  --shadow-lg: 0 16px 36px rgba(30,30,36,0.08);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

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;
  overflow-x: hidden;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

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

.section-head {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  color: #B45309;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 30px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 15px;
  line-height: 1.3;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: var(--dark);
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(255, 184, 0, 0.35);
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 184, 0, 0.45);
}

.btn-dark {
  background: var(--dark);
  color: #FFF;
}

.btn-dark:hover {
  background: var(--dark-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  border-color: var(--dark);
  color: var(--dark);
}

.btn-outline:hover {
  background: var(--dark);
  color: #FFF;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.9rem;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--dark);
}

.logo-area img {
  height: 40px;
  width: auto;
}

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

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

.nav-links li a:hover {
  color: #B45309;
  background: var(--primary-light);
}

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--dark);
  cursor: pointer;
}

/* 首屏 Hero */
.hero-section {
  position: relative;
  background: radial-gradient(circle at 80% 20%, #FFF4D0 0%, #FAF9F6 60%);
  padding: 90px 0 70px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: #FFF;
  border: 1px solid var(--primary-border);
  box-shadow: 0 4px 12px rgba(255, 184, 0, 0.15);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #92400E;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

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

.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.stat-item {
  background: #FFF;
  border: 1px solid var(--border-color);
  padding: 24px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

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

.stat-value span {
  color: #D97706;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* 平台支持徽标轮播条 */
.model-strip {
  background: #FFF;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
}

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

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

.model-tag:hover {
  background: var(--primary);
  color: var(--dark);
  border-color: var(--primary);
}

/* 服务与功能网格 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-border);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 52px;
  height: 52px;
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #B45309;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

.card-link {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  color: #B45309;
}

/* 图文左右排版 */
.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.split-image-box {
  background: #FFF;
  border-radius: var(--radius-lg);
  padding: 12px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.split-image-box img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
}

.split-text-box h3 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
}

.split-text-box p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 1rem;
}

.checklist {
  list-style: none;
  margin-bottom: 24px;
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: var(--text-main);
  font-weight: 500;
}

.checklist li::before {
  content: "✔";
  color: #D97706;
  font-weight: 900;
}

/* 对比评测表格 */
.review-score-box {
  background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.score-left h4 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 6px;
}

.score-stars {
  color: #F59E0B;
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.score-badge {
  font-size: 2.8rem;
  font-weight: 900;
  color: #B45309;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.score-badge span {
  font-size: 1.2rem;
  color: var(--text-muted);
  font-weight: 500;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  background: #FFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

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

.custom-table th, .custom-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.95rem;
}

.custom-table th {
  background: #FAFAF9;
  font-weight: 700;
  color: var(--dark);
}

.custom-table tr.highlight-row {
  background: #FFFDF5;
}

.custom-table tr.highlight-row td {
  font-weight: 600;
  color: #92400E;
}

/* 步骤流程 */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-card {
  background: #FFF;
  border: 1px solid var(--border-color);
  padding: 28px 20px;
  border-radius: var(--radius-md);
  position: relative;
  text-align: center;
  transition: var(--transition);
}

.step-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.step-num {
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: var(--dark);
  font-weight: 800;
  font-size: 1.2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* 评论卡片 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  background: #FFF;
  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;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.65;
  margin-bottom: 18px;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px dashed var(--border-color);
  padding-top: 14px;
}

.reviewer-avatar {
  width: 42px;
  height: 42px;
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  color: #B45309;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.reviewer-info h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
}

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

/* 需求表单模块 */
.form-section-box {
  background: #FFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  max-width: 800px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 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(--dark);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: #FAFAF9;
  font-size: 0.95rem;
  color: var(--text-main);
  transition: var(--transition);
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: #FFF;
  box-shadow: 0 0 0 3px rgba(255, 184, 0, 0.2);
}

textarea.form-control {
  min-height: 110px;
  resize: vertical;
}

/* 折叠 FAQ */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-header {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--dark);
  user-select: none;
}

.faq-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
  color: #D97706;
}

.faq-body {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

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

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

.faq-item.active .faq-body {
  padding-bottom: 20px;
  max-height: 200px;
}

/* 文章列表区 */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.article-card {
  background: #FFF;
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-card a {
  font-weight: 700;
  font-size: 1rem;
  color: var(--dark);
  margin-bottom: 10px;
  display: block;
}

.article-card a:hover {
  color: #D97706;
}

/* 联系方式与二维码 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.contact-card {
  background: #FFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 1rem;
}

.contact-qr-wrapper {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.contact-qr-wrapper img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 6px;
  background: #FFF;
  margin-bottom: 10px;
}

/* 页脚与友情链接 */
.site-footer {
  background: #18181B;
  color: #A1A1AA;
  padding: 60px 0 30px;
  border-top: 1px solid #27272A;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h5 {
  color: #FFF;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #A1A1AA;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

.footer-friend-links a {
  display: inline-block;
  background: #27272A;
  color: #D4D4D8;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.85rem;
}

.footer-friend-links a:hover {
  background: var(--primary);
  color: var(--dark);
}

.footer-bottom {
  border-top: 1px solid #27272A;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #71717A;
  flex-wrap: wrap;
  gap: 12px;
}

/* 悬浮工具栏 */
.floating-bar {
  position: fixed;
  right: 24px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 990;
}

.float-btn {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: var(--dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  border: none;
  font-weight: 800;
  font-size: 1.1rem;
  transition: var(--transition);
}

.float-btn:hover {
  transform: scale(1.08);
  background: var(--primary-hover);
}

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

.float-qr-box img {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 6px;
}

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

/* 响应式断点 */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-stats-grid, .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .split-row {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #FFF;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    gap: 0;
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 1.8rem;
  }
  .form-grid, .contact-grid {
    grid-template-columns: 1fr;
  }
  .form-group.full-width {
    grid-column: span 1;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .hero-stats-grid, .steps-grid {
    grid-template-columns: 1fr;
  }
}