@charset "UTF-8";

/* ===== 悦海科技 - 首页专属样式 ===== */

/* ===== Banner轮播区 ===== */
.banner-slider {
  position: relative;
  width: 100%;
  height: 500px;
  overflow: hidden;
  background-color: var(--dark-bg);
}

.banner-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-slide.active {
  opacity: 1;
}

.banner-slide img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(15,30,46,0.7) 0%, rgba(30,58,95,0.5) 100%);
  z-index: 2;
}

.banner-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 800px;
  padding: 0 var(--spacing-lg);
}

.banner-content h2 {
  color: var(--text-white);
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

.banner-content p {
  color: rgba(255,255,255,0.9);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
}

.banner-btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-xl);
  background-color: var(--secondary);
  color: var(--text-white);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.banner-btn:hover {
  background-color: #c4956a;
  color: var(--text-white);
  transform: translateY(-2px);
}

/* Banner指示器 */
.banner-dots {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
  z-index: 4;
}

.banner-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.banner-dot.active {
  background-color: var(--secondary);
  width: 32px;
  border-radius: 6px;
}

/* ===== 核心业务简介区 ===== */
.core-intro {
  background-color: var(--page-bg);
}

.core-intro-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.core-card {
  background-color: #fff;
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.core-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  border-color: var(--secondary);
}

.core-card-icon {
  width: 64px;
  height: 64px;
  background-color: var(--primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 1.75rem;
  color: var(--text-white);
}

.core-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.core-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ===== 服务体系展示区 ===== */
.services-showcase {
  background-color: var(--dark-bg);
  color: var(--text-white);
}

.services-showcase .section-title {
  color: var(--text-white);
}

.services-showcase .section-title::after {
  background-color: var(--secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.service-item {
  background-color: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.1);
}

.service-item:hover {
  background-color: rgba(255,255,255,0.1);
  border-color: var(--secondary);
  transform: translateY(-4px);
}

.service-icon {
  width: 72px;
  height: 72px;
  background-color: var(--secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 2rem;
}

.service-item h3 {
  color: var(--text-white);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.service-item p {
  color: rgba(255,255,255,0.7);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
}

.service-link {
  color: var(--secondary);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
}

.service-link:hover {
  color: #e8b88a;
}

/* ===== 数据展示区 ===== */
.data-section {
  background-color: var(--primary);
  color: var(--text-white);
  padding: var(--spacing-3xl) 0;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

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

.data-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--secondary);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.data-label {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
}

/* ===== 技术百科精选区 ===== */
.wiki-section {
  background-color: var(--page-bg);
}

.wiki-list {
  margin-top: var(--spacing-xl);
}

.wiki-item {
  background-color: #fff;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  transition: var(--transition);
  border-left: 3px solid var(--primary);
}

.wiki-item:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-left-color: var(--secondary);
}

.wiki-item h3 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xs);
}

.wiki-item h3 a {
  color: var(--text-dark);
  text-decoration: none;
}

.wiki-item h3 a:hover {
  color: var(--secondary);
}

.wiki-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ===== 新闻动态区 ===== */
.news-section {
  background-color: #fff;
}

.news-list {
  margin-top: var(--spacing-xl);
}

.news-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-color);
}

.news-item:last-child {
  border-bottom: none;
}

.news-title {
  flex: 1;
}

.news-title a {
  color: var(--text-dark);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
}

.news-title a:hover {
  color: var(--secondary);
}

.news-date {
  color: var(--text-muted);
  font-size: 0.875rem;
  white-space: nowrap;
  margin-left: var(--spacing-md);
}

/* ===== 合作伙伴区 ===== */
.partner-section {
  background-color: var(--page-bg);
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.partner-item {
  background-color: #fff;
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100px;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.partner-item:hover {
  border-color: var(--secondary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.partner-item span {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary);
}

/* ===== 联系我们快捷区 ===== */
.contact-quick {
  background-color: var(--dark-bg);
  color: var(--text-white);
}

.contact-quick .section-title {
  color: var(--text-white);
}

.contact-quick .section-title::after {
  background-color: var(--secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.contact-item {
  text-align: center;
  padding: var(--spacing-xl);
  background-color: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.1);
}

.contact-item-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--secondary);
}

.contact-item h3 {
  color: var(--text-white);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
}

.contact-item p {
  color: rgba(255,255,255,0.8);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

.contact-btn {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-lg);
  background-color: var(--secondary);
  color: var(--text-white);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
}

.contact-btn:hover {
  background-color: #c4956a;
  color: var(--text-white);
}

/* ===== Footer区 ===== */
.site-footer {
  background-color: var(--primary);
  color: var(--text-white);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-col h3 {
  color: var(--text-white);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.footer-col h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--secondary);
}

.footer-col p,
.footer-col a {
  color: rgba(255,255,255,0.8);
  font-size: 0.875rem;
  line-height: 1.8;
}

.footer-col a {
  display: block;
  margin-bottom: var(--spacing-xs);
  text-decoration: none;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer-bottom p {
  color: rgba(255,255,255,0.6);
  font-size: 0.875rem;
  margin-bottom: 0;
}

.footer-bottom a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
}

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

/* 节标题通用样式 */
.section-title {
  text-align: center;
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: var(--spacing-md);
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--secondary);
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: var(--spacing-xl);
  font-size: 1rem;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .core-intro-grid,
  .services-grid,
  .data-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .partner-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .banner-slider {
    height: 400px;
  }
  
  .banner-content h2 {
    font-size: 2rem;
  }
}

@media (max-width: 767px) {
  .core-intro-grid,
  .services-grid,
  .data-grid,
  .partner-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .banner-slider {
    height: 350px;
  }
  
  .banner-content h2 {
    font-size: 1.5rem;
  }
  
  .banner-content p {
    font-size: 0.9375rem;
  }
  
  .data-number {
    font-size: 2.25rem;
  }
  
  .news-item {
    flex-direction: column;
  }
  
  .news-date {
    margin-left: 0;
    margin-top: var(--spacing-xs);
  }
}

/* IE兼容 - Grid降级为Flex */
@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {
  .core-intro-grid,
  .services-grid,
  .data-grid,
  .partner-grid,
  .contact-grid,
  .footer-grid {
    display: flex;
    flex-wrap: wrap;
  }
  
  .core-intro-grid > *,
  .services-grid > *,
  .data-grid > *,
  .partner-grid > *,
  .contact-grid > * {
    width: 25%;
    padding: var(--spacing-sm);
  }
}