/* CSS变量定义 */
:root {
  /* 主色调 */
  --primary-color: #4a90e2;
  --primary-light: #5b9bd5;
  --primary-dark: #357abd;
  --primary-lighter: #e3f2fd;
  --primary-darker: #1976d2;

  /* 辅助色*/
  --accent-orange: #ff922b;
  --accent-orange-dark: #fd7e14;
  --accent-green: #40c057;
  --accent-teal: #12b886;
  --accent-red: #d0021b;

  /* 中性色 */
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-light: #999999;
  --border-color: #dee2e6;
  --gray-0: #f8f9fa;
  --gray-1: #f1f3f5;
  --gray-2: #e9ecef;
  --gray-3: #dee2e6;
  --gray-4: #ced4da;
  --gray-5: #adb5bd;
  --gray-6: #868e96;
  --gray-7: #495057;
  --gray-8: #343a40;
  --gray-9: #212529;

  /* 背景色 */
  --bg-primary: #ffffff;
  --bg-secondary: var(--gray-0);
  --bg-tertiary: var(--gray-2);
  --bg-comparison-left: linear-gradient(
    135deg,
    var(--primary-color) 0%,
    var(--primary-light) 100%
  );
  --bg-comparison-right: linear-gradient(
    135deg,
    var(--gray-2) 0%,
    var(--gray-1) 100%
  );

  /* 间距和尺寸 */
  --container-max-width: 120rem;
  --border-radius: 1.6rem;
  --border-radius-small: 0.8rem;
  --border-radius-tiny: 0.4rem;
  --border-radius-full: 50%;
  --shadow-lighter: 0 0.1rem 0.3rem rgba(0, 0, 0, 0.1);
  --shadow-light: 0 0.4rem 2rem rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 1.2rem 4rem rgba(0, 0, 0, 0.15);

  /* 字体大小 */
  --font-size-xs: 1.2rem; /* 12px */
  --font-size-sm: 1.4rem; /* 14px */
  --font-size-base: 1.6rem; /* 16px */
  --font-size-lg: 1.8rem; /* 18px */
  --font-size-xl: 2rem; /* 20px */
  --font-size-2xl: 2.4rem; /* 24px */
  --font-size-3xl: 3rem; /* 30px */
  --font-size-4xl: 3.2rem; /* 32px */
  --font-size-5xl: 4rem; /* 40px */
  --font-size-6xl: 4.8rem; /* 48px */

  /* 间距 */
  --spacing-xs: 0.5rem; /* 5px */
  --spacing-sm: 1rem; /* 10px */
  --spacing-md: 1.5rem; /* 15px */
  --spacing-lg: 2rem; /* 20px */
  --spacing-xl: 3rem; /* 30px */
  --spacing-2xl: 4rem; /* 40px */
  --spacing-3xl: 6rem; /* 60px */
  --spacing-4xl: 8rem; /* 80px */

  /* 动画 */
  --animation-fast: 0.2s;
  --animation-normal: 0.3s;
  --animation-slow: 0.5s;
  --animation-easing: ease;
  --animation-delay: 0s;

  /* rem基准：1rem = 10px */
  font-size: 62.5%;
}

/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

div.main {
  /* * */
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* body */
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto",
    "Helvetica Neue", Arial, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

div.main a {
  text-decoration: none;
}

/* 容器样式 */
div.main .container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* 按钮样式 */
div.main .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--border-radius-small);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--animation-normal) var(--animation-easing);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

div.main .btn-primary {
  background: var(--bg-comparison-left);
  color: white;
  box-shadow: var(--shadow-light);
}

div.main .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

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

div.main .btn-secondary:hover {
  background: var(--primary-lighter);
  transform: translateY(-2px);
}

/* 章节标题样式 */
div.main .section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  color: var(--text-primary);
  position: relative;
  overflow: visible;
}

div.main .section-title::after {
  content: "";
  position: absolute;
  bottom: -var(--spacing-sm);
  left: 50%;
  transform: translateX(-50%);
  width: 6rem;
  height: 0.4rem;
  background: var(--bg-comparison-left);
  border-radius: var(--border-radius-tiny);
}

/* 动画样式 */
div.main .price-updating {
  animation: priceUpdate 0.3s ease;
}

@keyframes priceUpdate {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

div.main .animation {
  opacity: 0;
}

div.main .animate-in {
  animation: slideInUp 0.6s ease;
  opacity: 1;
  transform: translateY(0);
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

div.main .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: rippleEffect 0.6s linear;
  pointer-events: none;
}

@keyframes rippleEffect {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* 主视图区样式 */
div.main .hero-section {
  background: var(--primary-lighter);
  color: white;
  padding: var(--spacing-4xl) 0;
  min-height: 55vh;
  display: flex;
  align-items: center;
  box-shadow: 0 1.2rem 4rem rgba(0, 0, 0, 0.15);
  overflow: hidden;
}

div.main .hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}
div.main .hero-text {
  color: var(--text-primary);
  z-index: 2;
}
div.main .hero-title {
  font-size: var(--font-size-6xl);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

div.main .hero-subtitle {
  font-size: var(--font-size-3xl);
  font-weight: 300;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

div.main .hero-description {
  font-size: var(--font-size-base);
  line-height: 1.7;
  margin-bottom: var(--spacing-2xl);
  opacity: 0.9;
  width: 90%;
}

div.main .hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

div.main .hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 0;
}

div.main .hero-image img {
  width: 90%;
  transform: scale(1.6);
}

/* 产品优势样式 */
div.main .advantages-section {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-secondary);
}

div.main .advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(35rem, 1fr));
  gap: var(--spacing-xl);
}

div.main .advantage-item {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  transition: all var(--animation-normal) var(--animation-easing);
}

div.main .advantage-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

div.main .advantage-icon {
  margin-bottom: var(--spacing-lg);
}

div.main .icon-placeholder {
  width: 7rem;
  height: 7rem;
  font-size: var(--font-size-4xl);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-lighter);
  border-radius: var(--border-radius-small);
  margin-bottom: var(--spacing-md);
}

div.main .advantage-item h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

div.main .advantage-item p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 套餐价格样式 */
div.main .pricing-section {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-primary);
}

div.main .pricing-content {
  display: none;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: 0.1rem;
}

/* ------ */

div.main .pricing-tabs {
  display: grid;
  justify-content: center;
  margin-bottom: 4.8rem;
  background: var(--bg-primary);
  border-radius: var(--border-radius-small);
  padding: 0.4rem;
  box-shadow: var(--shadow-light);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  overflow: hidden;
}

div.main .pricing-tabs .tab-btn {
  flex: 1;
  min-width: 0;
}

div.main .pricing-tabs::before {
  content: "";
  position: absolute;
  top: 0.4rem;
  left: 0.4rem;
  background: var(--primary-color);
  border-radius: var(--border-radius-small);
  transition: transform var(--animation-normal) var(--animation-easing);
  z-index: 1;
}

div.main .pricing-tabs.tab-1::before {
  transform: translateX(0);
}

div.main .pricing-tabs.tab-2::before {
  transform: translateX(100%);
}

div.main .pricing-tabs.tab-3::before {
  transform: translateX(calc(200% + 0.4rem));
}

div.main .pricing-tabs.tab-4::before {
  transform: translateX(calc(300% + 0.4rem * 2));
}

div.main .pricing-tabs.tab-5::before {
  transform: translateX(calc(400% + 0.4rem * 3));
}

div.main .pricing-tabs.tab-6::before {
  transform: translateX(calc(500% + 0.4rem * 4));
}

div.main .pricing-tabs.tab-7::before {
  transform: translateX(calc(600% + 0.4rem * 5));
}

div.main .pricing-tabs::before {
  transition: all var(--animation-normal) var(--animation-easing);
}

div.main .tab-btn {
  padding: 1.2rem;
  border: none;
  background: transparent;
  border-radius: 5rem;
  font-size: 1.6rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--animation-normal) var(--animation-easing);
  color: var(--text-secondary);
  position: relative;
  z-index: 2;
}

div.main .tab-btn.active {
  color: white;
}

div.main .pricing-content.active {
  display: grid;
}

div.main .pricing-section .section-title::before {
  z-index: 11;
  content: "首单8折";
  position: absolute;
  top: -1.4rem;
  left: 54.5%;
  background: var(--accent-orange);
  color: white;
  padding: 0.4rem 0.8rem;
  border-radius: 0.4rem;
  font-size: 1rem;
  font-weight: 600;
}

div.main .pricing-card {
  background: var(--bg-primary);
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: all var(--animation-normal) var(--animation-easing);
  position: relative;
}

div.main .pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
  border-color: var(--primary-color);
  z-index: 1;
}

div.main .pricing-badge {
  position: absolute;
  top: 1%;
  right: -29.5%;
  background: var(--accent-green);
  text-align: center;
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  transform: rotate(45deg);
  z-index: 1;
  width: 75%;
}

div.main .pricing-header {
  background: var(--bg-secondary);
  padding: var(--spacing-xl);
  text-align: center;
}

div.main .pricing-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

div.main .pricing-feature {
  display: flex;
  justify-content: space-between;
}

div.main .pricing-feature span {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

div.main .pricing-body {
  padding: var(--spacing-xl);
  text-align: center;
}

div.main .price {
  margin-bottom: var(--spacing-xl);
}

/* div.main .price p {
    color: var(--text-light);
    text-decoration: line-through;
} */

div.main .price-number {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--accent-red);
}

div.main .price-unit {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-left: var(--spacing-xs);
}

div.main .feature-list {
  list-style: none;
  margin-bottom: var(--spacing-xl);
  text-align: left;
}

div.main .feature-list li {
  padding: var(--spacing-xs) 0;
  position: relative;
  padding-left: var(--spacing-xl);
  font-size: var(--font-size-sm);
}

div.main .feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1.6rem;
  height: 1.6rem;
  border-radius: var(--border-radius-full);
}

div.main .feature-included::before {
  background: var(--accent-green);
}

div.main .feature-excluded::before {
  background: var(--gray-4);
}

div.main .feature-included {
  color: var(--text-primary);
}

div.main .feature-excluded {
  color: var(--text-light);
}

/* 流量包费用样式 */
div.main .traffic-package-section {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-secondary);
}

div.main .traffic-package-content {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  max-width: 100rem;
  margin: 0 auto;
}

div.main .package-selector h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

div.main .package-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: var(--spacing-sm);
}

div.main .package-option {
  padding: var(--spacing-md) var(--spacing-lg);
  border: 2px solid var(--border-color);
  background: var(--bg-primary);
  border-radius: var(--border-radius-small);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--animation-normal) var(--animation-easing);
  text-align: center;
}

div.main .package-option:hover {
  border-color: var(--primary-color);
  background: var(--primary-lighter);
}

div.main .package-option.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

div.main .package-pricing {
  text-align: center;
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
}

div.main .current-price {
  margin-bottom: var(--spacing-md);
}

div.main .price-value {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--primary-color);
}

div.main .original-price {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  text-decoration: line-through;
  margin-bottom: var(--spacing-lg);
}

div.main .package-info {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

div.main .package-description ul {
  list-style: none;
}

div.main .package-description li {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  position: relative;
  padding-left: var(--spacing-lg);
}

div.main .package-description li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* 应用场景样式 */
div.main .scenarios-section {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-primary);
}

div.main .scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
  gap: var(--spacing-xl);
}

div.main .scenario-card {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  text-align: center;
  transition: all var(--animation-normal) var(--animation-easing);
  border: 2px solid transparent;
  overflow: hidden;
}

div.main .scenario-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

div.main .decoration {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
  opacity: 0.04;
  pointer-events: none;
  transition: opacity var(--animation-normal) var(--animation-easing);
}

div.main .scenario-card:hover .decoration {
  opacity: 0.2;
}

div.main .circle {
  position: absolute;
  border-radius: 50%;
  transition: transform var(--animation-normal) var(--animation-easing);
}

div.main .scenario-card:hover .circle {
  transform: scale(1.5);
}

div.main .circle-1 {
  width: 12rem;
  height: 12rem;
  background: var(--primary-color);
  top: -4rem;
  right: -4rem;
}

div.main .circle-2 {
  width: 8rem;
  height: 8rem;
  background: var(--accent-teal);
  bottom: -3rem;
  left: -3rem;
}

div.main .scenario-icon {
  margin-bottom: var(--spacing-sm);
  display: flex;
  justify-content: center;
}

div.main .scenario-icon .icon-placeholder {
  font-size: var(--font-size-6xl);
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  margin-bottom: 0;
}

div.main .scenario-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

div.main .scenario-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 相关文章样式 */
div.main .articles-section {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-secondary);
}

div.main .articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: var(--spacing-md);
}

div.main .article-card {
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  overflow: hidden;
  height: 200px;
  box-shadow: var(--shadow-light);
  transition: all var(--animation-normal) var(--animation-easing);
}

div.main .article-card:hover {
  transform: translateY(-5px);
  width: 150%;
  height: 100%;
  box-shadow: var(--shadow-medium);
  z-index: 99;
}

div.main .article-content {
  padding: var(--spacing-xl);
}

div.main .article-content .h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  line-height: 1.4;
  transition: all 0.6s;

  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  text-overflow: ellipsis;
}

div.main .article-card:hover .article-content h3 {
  -webkit-line-clamp: 99;
}

div.main .article-content p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  transition: all 0.6s;

  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

div.main .article-card:hover .article-content p {
  -webkit-line-clamp: 99;
}

div.main .article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

div.main .article-date {
  opacity: 0;
  transition: all 0.6s;
}

div.main .article-card:hover .article-date {
  opacity: 1;
}

div.main .article-category {
  background: #f3f7ff;
  color: rgba(0, 0, 0, 0.7294117647);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  font-size: 1.3rem;
  transition: all 0.6s;
}
div.main .article-card:hover .article-category {
  background: #065ef1;
  color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
  :root {
    font-size: 55%;
  }

  div.main .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-xl);
  }

  div.main .hero-buttons {
    justify-content: center;
  }

  div.main .hero-image img {
    transform: scale(1.5);
  }

  div.main .traffic-package-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
  }

  div.main .package-info {
    flex-direction: column;
    text-align: left;
  }

  div.main .pricing-content {
    grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
  }

  div.main .pricing-section .section-title::before {
    top: -1.5rem;
    left: 57%;
  }

  div.main .advantages-grid {
    grid-template-columns: 1fr;
  }

  div.main .scenarios-grid {
    grid-template-columns: 1fr;
  }

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

  /* 切换按钮 */
  div.main .pricing-tabs {
    grid-template-columns: 1fr;
    width: 100%;
  }

  div.main .pricing-tabs.tab-1::before {
    transform: translateY(0%);
  }
  div.main .pricing-tabs.tab-2::before {
    transform: translateY(100%);
  }
  div.main .pricing-tabs.tab-3::before {
    transform: translateY(calc(200% + 0.4rem));
  }
  div.main .pricing-tabs.tab-4::before {
    transform: translateY(calc(300% + 0.4rem * 2));
  }

  div.main .pricing-tabs.tab-5::before {
    transform: translateY(calc(400% + 0.4rem * 3));
  }

  div.main .pricing-tabs.tab-6::before {
    transform: translateY(calc(500% + 0.4rem * 4));
  }

  div.main .pricing-tabs.tab-7::before {
    transform: translateY(calc(600% + 0.4rem * 5));
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 50%;
  }

  div.main .hero-title {
    font-size: var(--font-size-5xl);
  }

  div.main .hero-subtitle {
    font-size: var(--font-size-2xl);
  }

  div.main .section-title {
    font-size: var(--font-size-3xl);
  }

  div.main .package-options {
    grid-template-columns: repeat(3, 1fr);
  }

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

  div.main .btn {
    width: 100%;
    max-width: 25rem;
  }

  div.main .pricing-content {
    grid-template-columns: 1fr;
  }
}

/*
新闻版块
*/

div.main .news-section-container {
  /* 使用 Flexbox 将内容居中 */
  display: flex;
  justify-content: center;
  justify-items: center;
  width: 100%;
  padding: var(--spacing-4xl) 0;
  background: var(--bg-primary);
  flex-direction: column;
}

div.main .news-container {
  background-color: white; /* 白色背景 */
  border-radius: 1rem; /* 圆角 */
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05); /* 阴影 */
  width: 100%;
  max-width: var(--container-max-width); /* 最大宽度 */
  padding: 2.4rem; /* 内边距 */
  margin: 0 auto;
  box-sizing: border-box;
}
div.main .header-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.6rem; /* pb-4 */
  border-bottom: 1px solid #e5e7eb; /* border-b border-gray-200 */
  margin-bottom: 1.6rem; /* mb-4 */
}
div.main .header-left {
  display: flex;
  align-items: center;
}
div.main .header-icon {
  height: 2.4rem; /* h-6 */
  width: 2.4rem; /* w-6 */
  color: var(--primary-color); /* text-blue-500 */
  margin-right: 0.8rem; /* mr-2 */
}
div.main .header-title {
  font-size: 2rem; /* text-xl */
  font-weight: 600; /* font-semibold */
  color: #1f2937; /* text-gray-800 */
}
div.main .view-more-link {
  color: var(--primary-color); /* text-blue-500 */
  text-decoration: none;
  display: flex;
  align-items: center;
  font-size: 1.4rem; /* text-sm */
  font-weight: 500; /* font-medium */
  border-radius: 9999px; /* rounded-full */
  padding: 0.4rem 1.2rem; /* px-3 py-1 */
  background-color: #eff6ff; /* bg-blue-50 */
  transition-property: background-color, color;
  transition-duration: 0.3s;
  transition-timing-function: ease-in-out;
}
div.main .view-more-link:hover {
  color: var(--primary-dark); /* hover:text-blue-600 */
  background-color: #dbeafe; /* hover:bg-blue-100 */
}
div.main .view-more-icon {
  height: 1.6rem; /* h-4 */
  width: 1.6rem; /* w-4 */
  margin-left: 0.4rem; /* ml-1 */
}

/* 新闻项样式 */
div.main .news-item {
  display: flex;
  flex-direction: column; /* 默认垂直堆叠 */
  align-items: flex-start; /* 默认左对齐 */
  padding: 1.2rem 0; /* 垂直内边距 */
  border-bottom: 1px solid #e5e7eb; /* 底部边框 */
}
div.main .news-item:last-child {
  /*border-bottom: none;*/ /* 最后一个新闻项没有底部边框 */
}
div.main .news-date {
  min-width: 120px; /* 日期最小宽度 */
  color: #6b7280; /* 灰色日期文本 */
  font-size: 1.4rem; /* 字体大小 */
  margin-bottom: 0.4rem; /* mb-1 */
  margin-right: 0; /* mr-0 */
}
div.main .news-title a {
  color: #1f2937; /* 深灰色标题文本 */
  text-decoration: none; /* 无下划线 */
  transition: color 0.2s ease-in-out; /* 颜色过渡 */
  font-size: 1.5rem; /* 稍微大一点的标题字体 */
  flex: 1; /* flex-1 */
}
div.main .news-title a:hover {
  color: var(--primary-color); /* 悬停时蓝色 */
}

/* 新闻中心 响应式网格布局 */
div.main .news-grid {
  display: grid;
  grid-template-columns: 1fr; /* 默认一列 */
  gap: 1.6rem; /* 网格间距 */
}

@media (min-width: 640px) {
  /* 对应 Tailwind sm breakpoint */
  div.main .news-item {
    flex-direction: row; /* sm 屏幕变为水平排列 */
    align-items: center; /* sm 屏幕居中对齐 */
  }
  div.main .news-date {
    margin-bottom: 0; /* sm 屏幕移除底部外边距 */
    margin-right: 1.6rem; /* sm 屏幕右侧外边距 mr-4 */
  }
  div.main .news-grid {
    grid-template-columns: repeat(2, 1fr); /* 小屏幕两列 */
  }
}

@media (min-width: 1024px) {
  /* 对应 Tailwind lg breakpoint */
  div.main .news-grid {
    grid-template-columns: repeat(3, 1fr); /* 大屏幕三列 */
  }
}