@charset "UTF-8";

/* CSS变量定义 */
:root {
  --primary: #C41E24;
  --primary-dark: #8B0000;
  --accent: #D4A574;
  --text: #333333;
  --text-secondary: #666666;
  --text-light: #999999;
  --bg: #FFFFFF;
  --bg-gray: #F5F5F5;
  --bg-light: #FAFAFA;
  --border: #E5E5E5;
  --footer-bg: #2B2B2B;
  --footer-text: #AAAAAA;
  --max-width: 1200px;
  --header-height: 70px;
  --transition: all 0.3s ease;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
}

/* 重置样式 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* 头部导航 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg);
  box-shadow: var(--shadow);
  z-index: 1000;
  transition: var(--transition);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
}

.logo-text span {
  color: var(--text);
  font-size: 14px;
  font-weight: 400;
  display: block;
  letter-spacing: 1px;
  margin-top: -4px;
}

/* 导航菜单 */
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--text);
  border-radius: 4px;
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: rgba(196, 30, 36, 0.06);
}

/* 下拉菜单 */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background: var(--bg);
  border-radius: 8px;
  box-shadow: var(--shadow-hover);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
}

.nav-item:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text);
}

.dropdown a:hover {
  color: var(--primary);
  background: var(--bg-gray);
}

/* 搜索框 */
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-box {
  position: relative;
  width: 200px;
}

.search-box input {
  width: 100%;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 0 36px 0 16px;
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--primary);
}

.search-box button {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  font-size: 16px;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

/* 页脚 */
.footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 60px 0 20px;
}

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

.footer-brand .logo-text {
  color: var(--bg);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer-title {
  font-size: 16px;
  color: var(--bg);
  margin-bottom: 20px;
  font-weight: 600;
}

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

.footer-links a {
  font-size: 14px;
  color: var(--footer-text);
}

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

.footer-contact p {
  font-size: 14px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-hover);
  z-index: 999;
  font-size: 20px;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

/* 面包屑 */
.breadcrumb {
  background: var(--bg-gray);
  padding: 16px 0;
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb .sep {
  color: var(--text-light);
}

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

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.pagination a:hover,
.pagination .active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.pagination .disabled {
  color: var(--text-light);
  cursor: not-allowed;
}

/* 区块标题 */
.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 16px;
}

/* Tab切换 */
.tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 24px;
}

.tab-item {
  padding: 12px 24px;
  font-size: 15px;
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
  transition: var(--transition);
  font-weight: 500;
}

.tab-item:hover {
  color: var(--primary);
}

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

.tab-item.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* 卡片 */
.card {
  background: var(--bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 20px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.card-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-light);
}

/* 新闻列表项 */
.news-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.news-item:hover {
  padding-left: 8px;
}

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

.news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  height: 60px;
  background: var(--bg-gray);
  border-radius: 8px;
}

.news-date .day {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.news-date .month {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.news-info {
  flex: 1;
}

.news-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.5;
}

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

.news-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(196, 30, 36, 0.08);
  color: var(--primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

/* 加载动画 */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* 主内容区 */
.main {
  padding-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}