/**
 * PbootCMS 模板样式 - lfbkgn.com
 * 随机种子编号: D-A-1-16px-无/填/无-N5-LE-TC-16px-0.4s-中-2px-90°-18px-24px-0.5-R2,R5,R10
 *
 * 【随机参数记录】
 * 核心风格: D (装饰艺术) - 对称+金色+几何纹样+奢华
 * 布局骨架: A (全屏分节式) - 每个section占满100vh，滚动切换
 * 色彩策略: 1 (单色系 - 深蓝→浅蓝同色相不同明度)
 * 标题字号: M (3rem)
 * 正文字号: 16px
 * 行高: 1.8
 * 段落间距: 1.8em
 * 容器宽度: 1200px
 * 圆角: 6px
 * 卡片内边距: 30px
 * 图标风格: 无图标
 * 按钮风格: 填充背景
 * 分割线: 无
 * 图片处理: 圆角
 * 导航布局: N5 (顶部横幅+导航)
 * 列表排版: LE (极简列表)
 * 标题样式: TC (卡片式标题)
 * 阴影大小: 中(16px)
 * 动画时长: 中(0.4s)
 * 悬停位移: 中(8px)
 * 边框宽度: 中(2px)
 * 渐变角度: 90°
 * 图标大小: 中(18px)
 * 卡片间距: 标准(24px)
 * 背景深度: 中(0.5)
 * 侧边栏模块: R2(热门文章) + R5(标签云) + R10(排名列表)
 */

/* ========== CSS Variables ========== */
:root {
  --color-primary: #1E3A5F;
  --color-primary-light: #2E5A8F;
  --color-primary-dark: #0F1F33;
  --color-accent: #C9A962;
  --color-accent-light: #E8D5A3;
  --color-white: #FFFFFF;
  --color-cream: #F8F6F0;
  --color-gray: #5A6A7A;
  --color-gray-light: #8A9AAA;
  --color-dark: #1A1A1A;

  --shadow-small: 8px;
  --shadow-medium: 16px;
  --shadow-large: 24px;

  --radius: 6px;
  --radius-lg: 12px;

  --animation-speed: 0.4s;
  --transition: all var(--animation-speed) ease;

  --container-width: 1200px;
  --sidebar-width: 280px;

  --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-gray);
  background: var(--color-cream);
  min-height: 100vh;
}

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

a:hover {
  color: var(--color-accent);
}

ul, ol {
  list-style: none;
}

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

/* ========== Header (N5: 顶部横幅+导航) ========== */
.pb-header {
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.pb-banner {
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary), var(--color-primary-light));
  padding: 10px 40px;
  text-align: center;
  color: var(--color-accent-light);
  font-size: 13px;
  letter-spacing: 3px;
  border-bottom: 2px solid var(--color-accent);
}

.pb-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 80px;
  background: var(--color-white);
  box-shadow: 0 2px 10px rgba(30, 58, 95, 0.1);
}

.pb-logo img {
  height: 50px;
  border-radius: var(--radius);
  border: 2px solid var(--color-accent);
}

.pb-nav {
  display: flex;
  gap: 4px;
}

.pb-nav a {
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  transition: var(--transition);
  position: relative;
}

.pb-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--color-accent);
  transition: width var(--animation-speed) ease;
}

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

.pb-nav a:hover {
  color: var(--color-accent);
}

.pb-nav a.active {
  color: var(--color-accent);
  font-weight: 600;
}

.pb-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
}

.pb-menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

/* ========== Section Layout ========== */
.pb-section {
  padding: 60px 20px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.pb-section-inner {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

.pb-main-content {
  flex: 1;
  min-width: 0;
}

.pb-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ========== Section Title (TC: 卡片式标题) ========== */
.pb-section-title {
  margin-bottom: 32px;
  padding: 16px 24px;
  background: var(--color-white);
  border-radius: var(--radius);
  border-left: 5px solid var(--color-accent);
  box-shadow: var(--shadow-small);
}

.pb-section-title h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* ========== LH: 交错卡片 ========== */
.pb-news-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.pb-news-item {
  display: flex;
  gap: 24px;
  padding: 20px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-small);
  border: 1px solid rgba(30, 58, 95, 0.08);
  transition: var(--transition);
}

.pb-news-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-medium);
  transform: translateY(-4px);
}

/* Odd: 左图右文 */
.pb-news-item:nth-child(odd) {
  flex-direction: row;
}

/* Even: 右图左文 */
.pb-news-item:nth-child(even) {
  flex-direction: row-reverse;
}

.pb-news-thumb {
  flex: 0 0 280px;
  height: 180px;
  overflow: hidden;
  border-radius: var(--radius);
  border: 2px solid rgba(30, 58, 95, 0.1);
}

.pb-news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.pb-news-item:hover .pb-news-thumb img {
  transform: scale(1.08);
}

.pb-news-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.pb-news-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.pb-news-desc {
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pb-news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 8px;
}

.pb-news-date {
  font-size: 12px;
  color: var(--color-gray-light);
}

.pb-news-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  padding: 4px 14px;
  border-radius: 20px;
}

/* ========== Sidebar Widgets ========== */
.pb-sidebar-widget {
  background: var(--color-white);
  padding: 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-small);
  border-top: 3px solid var(--color-accent);
}

.pb-widget-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(201, 169, 98, 0.3);
}

.pb-sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pb-sidebar-list li {
  position: relative;
  padding-left: 16px;
}

.pb-sidebar-list li::before {
  content: '◆';
  position: absolute;
  left: 0;
  font-size: 8px;
  color: var(--color-accent);
  top: 50%;
  transform: translateY(-50%);
}

.pb-sidebar-list a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--color-gray);
  border-bottom: 1px dashed rgba(30, 58, 95, 0.1);
  transition: var(--transition);
}

.pb-sidebar-list li:last-child a {
  border-bottom: none;
}

.pb-sidebar-list a:hover {
  color: var(--color-accent);
  padding-left: 8px;
}

/* Rank List */
.pb-rank-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pb-rank-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: rgba(30, 58, 95, 0.03);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
  transition: var(--transition);
}

.pb-rank-item:hover {
  background: rgba(201, 169, 98, 0.1);
  transform: translateX(4px);
}

.pb-rank-num {
  flex: 0 0 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  font-weight: 700;
  font-size: 14px;
  border-radius: 50%;
}

.pb-rank-item:nth-child(1) .pb-rank-num { background: linear-gradient(135deg, #C9A962, #E8D5A3); }
.pb-rank-item:nth-child(2) .pb-rank-num { background: linear-gradient(135deg, #1E3A5F, #2E5A8F); }
.pb-rank-item:nth-child(3) .pb-rank-num { background: linear-gradient(135deg, #5A6A7A, #8A9AAA); }

.pb-rank-title {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-gray);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pb-rank-title:hover {
  color: var(--color-accent);
}

/* Tags Cloud */
.pb-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pb-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(30, 58, 95, 0.05);
  color: var(--color-primary);
  font-size: 12px;
  border-radius: 20px;
  border: 1px solid rgba(201, 169, 98, 0.3);
  transition: var(--transition);
}

.pb-tag:hover {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: var(--color-white);
  border-color: transparent;
}

/* ========== Pagination ========== */
.pb-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 48px;
  padding: 20px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-small);
  flex-wrap: wrap;
}

.pb-pagination .page-status {
  padding: 0 12px;
  font-size: 13px;
  color: var(--color-gray-light);
  margin-right: 8px;
}

.pb-pagination .page-index,
.pb-pagination .page-pre,
.pb-pagination .page-next,
.pb-pagination .page-last {
  border: none;
  background: transparent;
  padding: 0;
}

.pb-pagination .page-index a,
.pb-pagination .page-pre a,
.pb-pagination .page-next a,
.pb-pagination .page-last a,
.pb-pagination .page-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  background: rgba(30, 58, 95, 0.05);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid rgba(201, 169, 98, 0.3);
  transition: var(--transition);
}

.pb-pagination .page-index a:hover,
.pb-pagination .page-pre a:hover,
.pb-pagination .page-next a:hover,
.pb-pagination .page-last a:hover,
.pb-pagination .page-num:hover {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: var(--color-white);
  border-color: transparent;
}

.pb-pagination .page-current,
.pb-pagination .page-num-current {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  font-weight: 700;
  border-color: transparent;
}

.pb-pagination .page-numbar {
  border: none;
  background: transparent;
  padding: 0 4px;
}

/* ========== Breadcrumb ========== */
.pb-breadcrumb {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
  font-size: 13px;
  color: var(--color-gray-light);
  box-shadow: var(--shadow-small);
}

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

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

.pb-breadcrumb span {
  color: var(--color-gray-light);
}

.pb-breadcrumb .current {
  color: var(--color-accent);
  font-weight: 500;
}

/* ========== Article ========== */
.pb-article {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.pb-article-header {
  padding: 48px;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
  border-bottom: 3px solid var(--color-accent);
}

.pb-article-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 16px;
}

.pb-article-meta {
  display: flex;
  gap: 32px;
  font-size: 13px;
  color: var(--color-accent-light);
}

.pb-article-body {
  padding: 48px;
}

.pb-article-content {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-gray);
}

.pb-article-content p {
  margin-bottom: 1.5em;
}

.pb-article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 24px 0;
}

.pb-article-content h2,
.pb-article-content h3,
.pb-article-content h4 {
  color: var(--color-primary);
  margin: 2em 0 1em;
  font-weight: 700;
}

.pb-article-content h2 { font-size: 1.5rem; }
.pb-article-content h3 { font-size: 1.25rem; }
.pb-article-content h4 { font-size: 1.1rem; }

.pb-article-content ul,
.pb-article-content ol {
  padding-left: 24px;
  margin-bottom: 1.5em;
}

.pb-article-content ul { list-style: none; }
.pb-article-content ul li::before {
  content: '◆ ';
  color: var(--color-accent);
}
.pb-article-content ol { list-style: decimal; }

.pb-article-content li {
  margin-bottom: 0.8em;
}

.pb-article-tags {
  padding: 24px 48px;
  border-top: 1px solid rgba(201, 169, 98, 0.2);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.pb-article-tags h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
}

/* ========== Footer ========== */
.pb-footer {
  background: linear-gradient(180deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-accent-light);
  padding: 50px 20px;
  margin-top: 80px;
  border-top: 3px solid var(--color-accent);
}

.pb-footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  text-align: center;
  font-size: 14px;
}

.pb-footer-inner p {
  margin-bottom: 12px;
}

.pb-footer-inner a {
  color: var(--color-accent);
}

.pb-footer-inner a:hover {
  color: var(--color-accent-light);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .pb-section-inner {
    flex-direction: column;
  }

  .pb-sidebar {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .pb-banner {
    padding: 10px 20px;
    font-size: 12px;
  }

  .pb-header-inner {
    padding: 0 20px;
    height: auto;
    flex-wrap: wrap;
    gap: 15px;
    padding: 15px 20px;
  }

  .pb-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
  }

  .pb-nav.active {
    display: flex;
  }

  .pb-nav a {
    border-bottom: 1px solid rgba(201, 169, 98, 0.2);
  }

  .pb-menu-toggle {
    display: flex;
  }

  .pb-news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .pb-news-meta {
    width: 100%;
    justify-content: flex-start;
  }

  .pb-article-header {
    padding: 24px;
  }

  .pb-article-title {
    font-size: 1.5rem;
  }

  .pb-article-meta {
    flex-direction: column;
    gap: 8px;
  }

  .pb-article-body {
    padding: 24px;
  }

  .pb-article-tags {
    padding: 20px 24px;
  }
}