/* ===== FastAdmin 经典门户主题 ===== */
:root {
  --primary: #1890ff;
  --primary-dark: #096dd9;
  --primary-light: #e6f7ff;
  --primary-glow: rgba(24, 144, 255, 0.25);
  --text: #333;
  --text-secondary: #666;
  --text-muted: #999;
  --border: #e8e8e8;
  --bg: #f5f7fa;
  --bg-white: #fff;
  --bg-card: #fff;
  --shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 2px 8px rgba(24, 144, 255, 0.2);
  --radius: 4px;
  --radius-sm: 3px;
  --radius-lg: 6px;
  --header-height: 60px;
  --container-width: 1320px;
  --container-pad: 20px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: Consolas, 'SF Mono', monospace;
  --gradient-tech: linear-gradient(135deg, #1890ff 0%, #36cfc9 100%);
  --gradient-dark: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
}

body {
  background: var(--bg);
  font-family: var(--font);
}

body::before { display: none; }

/* 白色导航 */
.site-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  backdrop-filter: none;
}

.site-header .site-logo {
  overflow: visible;
}

.site-header .site-logo-svg {
  height: 32px;
  width: auto;
}

.site-header .site-logo-img {
  height: 32px;
  max-width: 150px;
  width: auto;
  object-fit: contain;
}

.site-header .main-nav a {
  color: var(--text);
  font-size: 14px;
  font-weight: 400;
}

.site-header .main-nav a:hover,
.site-header .main-nav a.active {
  color: var(--primary);
  background: var(--primary-light);
  box-shadow: none;
}

.site-header .search-btn { color: var(--text-secondary); }
.site-header .member-btn {
  color: var(--text-secondary);
  background: transparent;
  border-color: var(--border);
}

.site-header .theme-toggle { border-color: var(--border); color: var(--text-secondary); }
.site-header .mobile-menu-btn span { background: var(--text); }

/* 公告栏 */
.announce-bar {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-bottom: 1px solid #bae7ff;
  height: 34px;
}

.announce-label {
  background: var(--primary);
  color: #fff;
  border: none;
  font-family: var(--font);
  font-size: 12px;
}

.announce-item { color: var(--text-secondary); }
.announce-item:hover { color: var(--primary); }

.btn-primary {
  background: var(--primary);
  box-shadow: none;
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 2px 8px rgba(24, 144, 255, 0.35);
}

/* 页脚 */
.site-footer--geek { background: #2b2b2b; }

/* Widget 经典样式 */
.widget {
  background: var(--bg-white);
  border: none;
  box-shadow: var(--shadow);
  margin-bottom: 15px;
}

.widget-title {
  font-size: 15px;
  padding: 12px 15px;
}

.widget-title::before {
  background: var(--primary);
  box-shadow: none;
}

.widget-body { padding: 12px 15px; }

/* 文章页经典白底 */
.article-main {
  background: var(--bg-white);
  backdrop-filter: none;
  border: none;
  box-shadow: var(--shadow);
}

.article-main::before { background: var(--primary); }

/* 新闻页经典页头 */
.news-hero::before {
  background: linear-gradient(135deg, #1890ff 0%, #36cfc9 100%);
}

.news-hero h1 { color: #fff; }
.news-hero h1 span { color: #fff; -webkit-text-fill-color: #fff; background: none; }
.news-hero p { color: rgba(255, 255, 255, 0.85); }
.news-hero-stat .label { color: rgba(255, 255, 255, 0.7); }

.news-filter {
  background: var(--bg-white);
  backdrop-filter: none;
  border-radius: var(--radius);
}

.filter-pill.active {
  background: var(--primary);
  box-shadow: none;
}

.sidebar-subscribe {
  background: linear-gradient(135deg, #1890ff 0%, #36cfc9 100%);
  border-radius: var(--radius);
}

/* 门户页头统一 */
.page-hero.light,
.page-hero {
  background: linear-gradient(135deg, #1890ff 0%, #36cfc9 100%);
}

@media (min-width: 1600px) {
  :root {
    --container-width: 1440px;
    --container-pad: 22px;
  }
}

@media (min-width: 1920px) {
  :root {
    --container-width: 1520px;
    --container-pad: 24px;
  }
}