/* 学霸导航网 - 列表页/首页/专题页样式（配合 detail.css 使用） */

/* ===== Hero 区 ===== */
.hero {
  background: linear-gradient(135deg, #1e40af, #2563eb);
  color: #fff;
  padding: 56px 20px 48px;
  text-align: center;
}

.hero h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.hero .hero-sub {
  font-size: 17px;
  opacity: .9;
  max-width: 640px;
  margin: 0 auto 28px;
}

.hero-search {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  gap: 0;
  background: #fff;
  border-radius: 30px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,.18);
}

.hero-search input {
  flex: 1;
  border: none;
  outline: none;
  padding: 14px 24px;
  font-size: 15px;
}

.hero-search button {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.hero-stats {
  margin-top: 24px;
  display: flex;
  justify-content: center;
  gap: 40px;
  font-size: 14px;
  opacity: .9;
}

.hero-stats strong {
  font-size: 22px;
  display: block;
}

/* ===== 区块 ===== */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 8px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.section-head h2 {
  font-size: 24px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-head h2::before {
  content: "";
  width: 5px;
  height: 22px;
  background: var(--primary);
  border-radius: 3px;
}

.section-head .more {
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
}

.section-head .more:hover {
  text-decoration: underline;
}

/* ===== 分类入口卡 ===== */
.cate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.cate-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 18px;
  text-decoration: none;
  color: var(--text);
  transition: all .2s;
  text-align: center;
}

.cate-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(37,99,235,.12);
  transform: translateY(-2px);
}

.cate-card .cate-icon {
  font-size: 30px;
  margin-bottom: 10px;
}

.cate-card .cate-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.cate-card .cate-count {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 条目卡 ===== */
.site-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.site-item-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  text-decoration: none;
  color: var(--text);
  transition: all .2s;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.site-item-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(37,99,235,.12);
  transform: translateY(-2px);
}

.site-item-card .item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  font-weight: 700;
  flex-shrink: 0;
}

.site-item-card .item-info {
  min-width: 0;
}

.site-item-card .item-name {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-item-card .item-desc {
  font-size: 13px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}

.site-item-card .item-type {
  font-size: 12px;
  color: var(--primary);
  margin-top: 6px;
}

/* ===== 分类页头 ===== */
.cate-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 36px 20px;
  text-align: center;
}

.cate-header h1 {
  font-size: 30px;
  margin-bottom: 10px;
  color: var(--text);
}

.cate-header p {
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
  font-size: 15px;
}

.cate-header .cate-total {
  display: inline-block;
  margin-top: 14px;
  background: var(--primary-light);
  color: var(--primary);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 14px;
}

/* ===== 全宽容器（列表类页面用） ===== */
.container-wide {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 20px 40px;
}

/* ===== UP主分组标题 ===== */
.up-group-title {
  font-size: 20px;
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
  color: var(--text);
}

.up-group-title span {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 8px;
}

/* ===== 省份锚点导航（高校分类页） ===== */
.province-nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.province-nav a {
  padding: 6px 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
}

.province-nav a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* ===== 校徽图片 ===== */
.item-icon img,
.site-favicon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--radius);
  background: #fff;
}

.site-favicon.site-logo {
  background: #fff;
  border: 1px solid var(--border);
  padding: 6px;
}

.item-icon:has(img) {
  background: #fff;
  border: 1px solid var(--border);
  padding: 4px;
}

/* ===== 404 页面 ===== */
.notfound {
  max-width: 640px;
  margin: 0 auto;
  padding: 80px 20px;
  text-align: center;
}

.notfound .code {
  font-size: 96px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.notfound h1 {
  font-size: 24px;
  margin: 16px 0 10px;
}

.notfound p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.notfound .hero-search {
  margin-bottom: 36px;
}

/* ===== 网站地图页 ===== */
.sitemap-block {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.sitemap-block h2 {
  font-size: 18px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
}

.sitemap-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 6px 16px;
  list-style: none;
}

.sitemap-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  padding: 4px 0;
  display: inline-block;
}

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

/* ===== 关于页 ===== */
.about-content {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 860px;
  margin: 24px auto 40px;
}

.about-content h1 {
  font-size: 26px;
  margin-bottom: 18px;
}

.about-content h2 {
  font-size: 20px;
  margin: 28px 0 12px;
  color: var(--text);
}

.about-content p, .about-content li {
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 15px;
}

.about-content ul {
  padding-left: 22px;
  margin: 10px 0;
}

/* ===== 友情链接 ===== */
.friend-links {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.friend-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
}

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

@media (max-width: 700px) {
  .hero h1 { font-size: 26px; }
  .hero-stats { gap: 24px; }
  .section-head h2 { font-size: 20px; }
}