/* HelloWord 官网样式 - 深色现代风格 */

:root {
  --primary-color: #00d4ff;
  --primary-dark: #0099cc;
  --bg-dark: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a25;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #666680;
  --border-color: #2a2a3a;
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
  --gradient-hero: linear-gradient(180deg, #0a0a0f 0%, #12121a 100%);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 70px;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 1200px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: 8px 0;
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-fast);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* 语言切换按钮 */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-switch:hover {
  border-color: var(--primary-color);
  background: var(--bg-card-hover);
}

.lang-icon {
  font-size: 1.2rem;
}

/* Hero 区域 */
.hero {
  padding: 150px 0 100px;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--bg-dark);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* 下载区域 */
.download-section {
  padding: 60px 0;
  background: var(--bg-card);
  margin: 0;
}

.download-box {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.download-version {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--primary-color);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.download-title {
  font-size: 2rem;
  margin-bottom: 10px;
}

.download-desc {
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 40px;
  background: var(--gradient-primary);
  color: var(--bg-dark);
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.download-btn:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.download-meta {
  margin-top: 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* 文章区域 */
.articles-section {
  padding: 80px 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
}

.section-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: opacity var(--transition-fast);
}

.section-link:hover {
  opacity: 0.8;
}

/* 文章网格 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

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

.article-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-image-placeholder {
  font-size: 3rem;
  color: var(--text-muted);
}

.article-content {
  padding: 20px;
}

.article-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
  line-height: 1.4;
}

.article-excerpt {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 15px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.article-date {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* 文章单页 */
.article-page {
  padding: 120px 0 60px;
}

.article-header {
  text-align: center;
  margin-bottom: 50px;
}

.article-page-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.article-page-meta {
  color: var(--text-secondary);
}

.article-page-cover {
  width: 100%;
  max-width: 900px;
  margin: 0 auto 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.article-page-cover img {
  width: 100%;
  height: auto;
  display: block;
}

.article-body {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.article-body p {
  margin-bottom: 20px;
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
}

.article-body h2,
.article-body h3 {
  color: var(--text-primary);
  margin: 30px 0 15px;
}

.article-body img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: 20px 0;
}

.article-body a {
  color: var(--primary-color);
}

.article-body code {
  background: var(--bg-card);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'Consolas', monospace;
}

.article-body pre {
  background: var(--bg-card);
  padding: 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 20px 0;
}

.article-body pre code {
  background: none;
  padding: 0;
}

/* 底部 */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  margin-top: 80px;
}

.footer-links {
  margin-bottom: 40px;
}

.footer-links h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.footer-link-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-link-item:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.footer-link-logo {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--bg-dark);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* 加载状态 */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  color: var(--text-secondary);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 移动端响应式 */
@media (max-width: 768px) {
  .navbar .container {
    padding: 0 15px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding: 120px 0 60px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .section-header {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }

  .download-box {
    padding: 30px 20px;
  }

  .article-page-title {
    font-size: 1.8rem;
  }
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 20px;
}

/* 文章列表页 */
.articles-page {
  padding: 120px 0 60px;
  min-height: 100vh;
}

.articles-page-header {
  text-align: center;
  margin-bottom: 60px;
}

.articles-page-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 15px;
}

.articles-page-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.breadcrumb span {
  color: var(--text-muted);
}

/* FAQ 折叠 */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  transition: background 0.2s;
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-question i {
  transition: transform 0.3s;
  color: var(--text-muted);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 24px;
}

.faq-answer p {
  padding-bottom: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 首页新增区块样式 ===== */

/* Hero 增强 */
.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 20px;
  color: var(--primary-color);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 5px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 客户端展示 */
.showcase-section {
  padding: 60px 0 80px;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 50%, var(--bg-dark) 100%);
}

.showcase-wrapper {
  display: flex;
  justify-content: center;
}

.showcase-mockup {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  width: 100%;
  max-width: 900px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), var(--shadow-glow);
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border-color);
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-color);
}

.mockup-dots span:nth-child(1) { background: #ff5f57; }
.mockup-dots span:nth-child(2) { background: #ffbd2e; }
.mockup-dots span:nth-child(3) { background: #28ca41; }

.mockup-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  flex: 1;
  text-align: center;
}

.mockup-body {
  display: flex;
  height: 400px;
}

.mockup-sidebar {
  width: 160px;
  background: var(--bg-dark);
  padding: 15px 10px;
  border-right: 1px solid var(--border-color);
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.sidebar-item:hover, .sidebar-item.active {
  background: rgba(0, 212, 255, 0.1);
  color: var(--primary-color);
}

.mockup-content {
  flex: 1;
  padding: 20px;
  overflow: hidden;
}

.mockup-cards {
  display: flex;
  gap: 15px;
  margin-bottom: 25px;
}

.mockup-card {
  flex: 1;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 15px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.card-info {}

.card-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.card-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.mockup-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 200px;
  padding: 15px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.chart-bar {
  flex: 1;
  background: var(--gradient-primary);
  border-radius: 4px 4px 0 0;
  opacity: 0.8;
  animation: chartGrow 1.5s ease-out forwards;
}

@keyframes chartGrow {
  from { height: 0 !important; opacity: 0; }
  to { opacity: 0.8; }
}

/* 区域标题通用 */
.section-header-center {
  text-align: center;
  margin-bottom: 50px;
}

.section-tag {
  display: inline-block;
  padding: 4px 16px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 20px;
  color: var(--primary-color);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 5px;
}

/* 功能特点 */
.features-section {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.feature-card.featured {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, var(--bg-card) 100%);
}

.feature-badge {
  position: absolute;
  top: 20px;
  right: -30px;
  background: var(--gradient-primary);
  color: var(--bg-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 40px;
  transform: rotate(45deg);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 15px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-tags span {
  padding: 4px 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 适用场景 */
.scenarios-section {
  padding: 80px 0;
  background: var(--bg-card);
}

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

.scenario-card {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 25px;
  text-align: center;
  transition: all var(--transition-normal);
}

.scenario-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
}

.scenario-icon {
  width: 70px;
  height: 70px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--primary-color);
  margin: 0 auto 20px;
}

.scenario-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.scenario-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 15px;
}

.scenario-stats {
  font-size: 0.85rem;
  color: var(--primary-color);
}

/* 版本对比 */
.comparison-section {
  padding: 80px 0;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: center;
}

.comparison-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  position: relative;
}

.comparison-card:hover {
  transform: translateY(-5px);
}

.comparison-card.recommended {
  border-color: var(--primary-color);
  transform: scale(1.03);
  box-shadow: var(--shadow-glow);
}

.recommended-badge {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: var(--bg-dark);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 20px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.comparison-header {
  padding: 30px 25px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.comparison-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.comparison-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 5px;
}

.comparison-price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

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

.comparison-features {
  list-style: none;
  padding: 20px 25px;
}

.comparison-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.comparison-features li i {
  color: var(--primary-color);
  width: 16px;
}

.comparison-features li.disabled {
  color: var(--text-muted);
}

.comparison-features li.disabled i {
  color: var(--text-muted);
}

.comparison-btn {
  display: block;
  margin: 0 25px 25px;
  padding: 14px;
  text-align: center;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.comparison-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.comparison-btn.primary {
  background: var(--gradient-primary);
  color: var(--bg-dark);
  border: none;
}

.comparison-btn.primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* 用户评价 */
.testimonials-section {
  padding: 80px 0;
  background: var(--bg-card);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: all var(--transition-normal);
}

.testimonial-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
}

.testimonial-stars {
  color: #ffc107;
  margin-bottom: 15px;
  font-size: 0.9rem;
}

.testimonial-text {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--bg-dark);
  font-size: 1.1rem;
}

.author-info strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 3px;
}

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

/* 数据安全 */
.security-section {
  padding: 80px 0;
}

.security-wrapper {
  display: flex;
  align-items: center;
  gap: 60px;
}

.security-content {
  flex: 1;
}

.security-content h2 {
  font-size: 2rem;
  font-weight: 800;
  margin: 15px 0 15px;
}

.security-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 30px;
}

.security-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.security-item {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.security-item i {
  width: 40px;
  height: 40px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 1rem;
  flex-shrink: 0;
}

.security-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.security-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.security-visual {
  width: 280px;
  height: 280px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.security-shield {
  width: 120px;
  height: 120px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--bg-dark);
  z-index: 2;
  position: relative;
}

.security-rings .ring {
  position: absolute;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.ring-1 { width: 180px; height: 180px; animation-delay: 0s; }
.ring-2 { width: 230px; height: 230px; animation-delay: 0.4s; }
.ring-3 { width: 280px; height: 280px; animation-delay: 0.8s; }

@keyframes pulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

/* 下载区域增强 */
.download-section {
  padding: 80px 0;
  background: var(--bg-card);
}

.download-box {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.download-content {
  display: flex;
  align-items: center;
  gap: 50px;
  padding: 50px;
}

.download-info {
  flex: 1;
}

.download-info .download-version {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--primary-color);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.download-info .download-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.download-info .download-desc {
  color: var(--text-secondary);
  margin-bottom: 30px;
  line-height: 1.7;
}

.download-buttons {
  margin-bottom: 20px;
}

.download-features {
  display: flex;
  gap: 25px;
}

.download-features span {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.download-features i {
  color: var(--primary-color);
}

.download-mini-stats {
  display: flex;
  flex-direction: column;
  gap: 25px;
  padding: 30px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.mini-stat {
  text-align: center;
}

.mini-stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-color);
}

.mini-stat-unit {
  font-size: 1rem;
  color: var(--text-muted);
  margin-left: 2px;
}

.mini-stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 3px;
}

/* 合作伙伴 */
.partners-section {
  padding: 60px 0;
}

.partners-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px 50px;
}

.partner-item {
  padding: 12px 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 2px;
  transition: all var(--transition-fast);
  opacity: 0.6;
}

.partner-item:hover {
  border-color: var(--primary-color);
  color: var(--text-primary);
  opacity: 1;
}

/* CTA 区域 */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 255, 0.05) 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.cta-content {
  text-align: center;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 15px;
}

.cta-content p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 30px;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* 底部增强 */
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 15px;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  transition: all var(--transition-fast);
}

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

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-bottom a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* 响应式补充 */
@media (max-width: 1024px) {
  .features-grid,
  .testimonials-grid,
  .comparison-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .scenarios-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .security-wrapper {
    flex-direction: column;
    text-align: center;
  }

  .security-features {
    justify-content: center;
  }

  .download-content {
    flex-direction: column;
    text-align: center;
  }

  .download-features {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-stats {
    gap: 20px;
    flex-wrap: wrap;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .features-grid,
  .scenarios-grid,
  .testimonials-grid,
  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .comparison-card.recommended {
    transform: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .mockup-body {
    flex-direction: column;
    height: auto;
  }

  .mockup-sidebar {
    width: 100%;
    flex-direction: row;
    display: flex;
    padding: 10px;
    overflow-x: auto;
  }

  .sidebar-item span {
    display: none;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .security-features {
    grid-template-columns: 1fr;
  }
}