/* ============================================================
   知文汇前端视觉升级 — redesign.css
   对标 Notion/Linear 审美：现代极简 + 毛玻璃 + 柔和渐变
   加载顺序：bootstrap → base.css → sidebar.css → redesign.css
   回滚方案：从 base.html 中移除本文件引用即可
   ============================================================ */

/* ========== 一、全局设计令牌（CSS Variables） ========== */
:root {
  /* --- 主色体系（Indigo-500，保持与现有 header 一致） --- */
  --primary: #6366F1;
  --primary-light: #818CF8;
  --primary-dark: #4F46E5;
  --primary-glow: rgba(99, 102, 241, 0.25);

  /* --- 兼容 index.html 内联样式的变量名 --- */
  --primary-color: #6366F1;
  --secondary-color: #A78BFA;

  /* --- 强调色 --- */
  --color-accent-rose: #F43F5E;
  --color-accent-amber: #F59E0B;
  --color-accent-emerald: #10B981;
  --color-accent-sky: #0EA5E9;

  /* --- 中性色 --- */
  --color-bg: #FAFBFC;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F8F9FC;
  --color-border: #E8ECF1;
  --color-border-light: #F0F2F5;

  /* --- 背景色（兼容 sidebar.css） --- */
  --bg-primary: #ffffff;
  --bg-secondary: #f8faff;
  --primary-bg: #EEF2FF;
  --primary-bg-hover: #E0E7FF;
  --card-bg: #FFFFFF;

  /* --- 文字色 --- */
  --text-primary: #1A1D26;
  --text-secondary: #5F6B7A;
  --text-muted: #94A3B8;
  --text-light: #94A3B8;

  /* --- 边框（兼容 sidebar.css + index.html） --- */
  --border: #E8ECF1;
  --border-light: #F0F2F5;
  --border-color: #E8ECF1;

  /* --- 圆角 --- */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;

  /* --- 阴影 --- */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 8px rgba(99, 102, 241, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(99, 102, 241, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 8px 30px rgba(99, 102, 241, 0.10), 0 4px 10px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15), 0 8px 30px rgba(99, 102, 241, 0.08);
  --shadow-card-hover: 0 12px 40px rgba(99, 102, 241, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);

  /* --- 动画 --- */
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* --- 毛玻璃 --- */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-heavy: rgba(255, 255, 255, 0.88);
  --glass-border: rgba(99, 102, 241, 0.08);
  --glass-blur: 16px;

  /* --- 字体 --- */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ========== 二、暗色模式变量覆盖 ========== */
body.dark-theme {
  --color-bg: #0F172A;
  --color-surface: #1E293B;
  --color-surface-hover: #273548;
  --color-border: #334155;
  --color-border-light: #273548;

  --bg-primary: #1E293B;
  --bg-secondary: #0F172A;
  --primary-bg: #1E3A5F;
  --primary-bg-hover: #273548;
  --card-bg: #1E293B;

  --text-primary: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-light: #64748B;

  --border: #334155;
  --border-light: #273548;
  --border-color: #334155;

  --primary-glow: rgba(99, 102, 241, 0.18);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.12);
  --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.4);

  --glass-bg: rgba(30, 41, 59, 0.72);
  --glass-bg-heavy: rgba(30, 41, 59, 0.92);
  --glass-border: rgba(99, 102, 241, 0.12);
}

/* ========== 三、全局微交互 ========== */

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.2);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.35);
}

/* 选中文字颜色 */
::selection {
  background: rgba(99, 102, 241, 0.2);
  color: var(--text-primary);
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 全局链接下划线动画 */
.blog-main a:not(.btn):not(.article-card-tag a):not(.read-more):not(.publish-btn):not(.empty-state-btn):not(.dropdown-item):not(.nav a):not(.page-link) {
  text-decoration: none;
  background: linear-gradient(to right, var(--primary-color), var(--primary-color));
  background-size: 0% 1.5px;
  background-position: 0% 100%;
  background-repeat: no-repeat;
  transition: background-size var(--transition-base);
}
.blog-main a:hover:not(.btn):not(.article-card-tag a):not(.read-more):not(.publish-btn):not(.empty-state-btn):not(.dropdown-item):not(.nav a):not(.page-link) {
  background-size: 100% 1.5px;
}

/* ========== 四、导航栏毛玻璃增强 ========== */

.blog-header {
  background: var(--glass-bg-heavy) !important;
  backdrop-filter: blur(var(--glass-blur)) !important;
  -webkit-backdrop-filter: blur(var(--glass-blur)) !important;
  border-bottom: 1px solid var(--glass-border) !important;
  box-shadow: none !important;
}

.blog-header.scrolled {
  box-shadow: var(--shadow-sm) !important;
  background: var(--glass-bg-heavy) !important;
}

/* Logo 呼吸光晕 */
.blog-header-logo .logo-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light)) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: 0 4px 16px var(--primary-glow) !important;
  transition: all var(--transition-spring) !important;
  position: relative;
}

.blog-header-logo .logo-icon::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 20px;
  background: transparent;
  box-shadow: 0 0 0 0 var(--primary-glow);
  animation: logo-pulse 3s ease-in-out infinite;
}

@keyframes logo-pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--primary-glow); }
  50% { box-shadow: 0 0 0 12px transparent; }
}

.blog-header-logo:hover .logo-icon {
  transform: scale(1.08) rotate(-3deg) !important;
}

/* 搜索框增强 */
.blog-header .search-group {
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-full) !important;
  box-shadow: var(--shadow-xs) !important;
  transition: all var(--transition-base) !important;
}

.blog-header .search-group:focus-within {
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 3px var(--primary-glow) !important;
}

.blog-header input[name='keyword'] {
  color: var(--text-primary) !important;
}

.blog-header input[name='keyword']::placeholder {
  color: var(--text-muted) !important;
}

.blog-header .search-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light)) !important;
  border-radius: var(--radius-full) !important;
  box-shadow: 0 4px 12px var(--primary-glow) !important;
  transition: all var(--transition-base) !important;
}

.blog-header .search-btn:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color)) !important;
  transform: scale(1.03) !important;
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35) !important;
}

/* 登录按钮 */
.blog-header .login-btn {
  background: var(--color-surface) !important;
  border: 2px solid var(--color-border) !important;
  color: var(--text-primary) !important;
  border-radius: var(--radius-full) !important;
  box-shadow: none !important;
  transition: all var(--transition-base) !important;
}

.blog-header .login-btn:hover {
  border-color: var(--primary-color) !important;
  color: var(--primary-color) !important;
  background: rgba(99, 102, 241, 0.04) !important;
  transform: translateY(-1px) !important;
  box-shadow: var(--shadow-sm) !important;
}

/* 主题切换按钮 */
.theme-toggle-btn {
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border) !important;
  border-radius: 50% !important;
  box-shadow: var(--shadow-xs) !important;
  transition: all var(--transition-base) !important;
}

.theme-toggle-btn:hover {
  border-color: var(--primary-color) !important;
  transform: scale(1.1) !important;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.2) !important;
}

/* 导航标签栏 */
.blog-nav .nav {
  background: var(--color-surface) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-sm) !important;
  border: 1px solid var(--color-border-light) !important;
  padding: 6px !important;
  gap: 4px !important;
}

.blog-nav .nav a {
  border-radius: var(--radius-md) !important;
  color: var(--text-secondary) !important;
  background: transparent !important;
  transition: all var(--transition-fast) !important;
}

.blog-nav .nav a:hover {
  color: var(--primary-color) !important;
  background: rgba(99, 102, 241, 0.06) !important;
}

.blog-nav .nav a.active {
  color: white !important;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light)) !important;
  box-shadow: 0 2px 12px var(--primary-glow) !important;
}

/* 用户信息包装器 */
.user-info-wrapper {
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border-light) !important;
  border-radius: var(--radius-full) !important;
  box-shadow: var(--shadow-xs) !important;
}

.user-info-wrapper:hover {
  background: var(--color-surface-hover) !important;
  border-color: var(--primary-color) !important;
  box-shadow: var(--shadow-sm) !important;
}

.user-nickname {
  color: var(--text-primary) !important;
}

/* 下拉菜单 */
.blog-nav .dropdown .dropdown-menu,
.user-info-wrapper .dropdown-menu {
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-lg) !important;
}

.blog-nav .dropdown .dropdown-item {
  color: var(--text-primary) !important;
  border-radius: var(--radius-md) !important;
}

.blog-nav .dropdown .dropdown-item:hover {
  color: var(--primary-color) !important;
  background: rgba(99, 102, 241, 0.06) !important;
}

/* ========== 五、Hero 区样式 ========== */

.hero-section {
  position: relative;
  width: 100%;
  min-height: clamp(400px, 70vh, 700px);
  padding: clamp(40px, 8vh, 80px) 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #EEF2FF 0%, #FDF2F8 30%, #FFF7ED 60%, #EEF2FF 100%);
}

body.dark-theme .hero-section {
  background: linear-gradient(135deg, #0F172A 0%, #1A1630 30%, #1A1A2E 60%, #0F172A 100%);
}

/* 背景装饰形状 */
.hero-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.floating-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
}

.shape-1 {
  top: -10%;
  right: -5%;
  width: 300px;
  height: 300px;
  background: rgba(99, 102, 241, 0.08);
  animation: hero-float-1 8s ease-in-out infinite;
}

.shape-2 {
  bottom: -15%;
  left: -5%;
  width: 200px;
  height: 200px;
  background: rgba(244, 63, 94, 0.06);
  animation: hero-float-2 10s ease-in-out infinite;
}

.shape-3 {
  top: 40%;
  left: 30%;
  width: 150px;
  height: 150px;
  background: rgba(245, 158, 11, 0.04);
  filter: blur(40px);
  animation: hero-float-3 7s ease-in-out infinite;
}

@keyframes hero-float-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes hero-float-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, -20px) scale(1.1); }
}

@keyframes hero-float-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -40px) scale(1.15); }
}

/* Hero 内容容器 */
.hero-container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.hero-content {
  flex: 0 0 55%;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 3.5rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 16px;
  min-height: 1.2em;
}

.hero-title .typed-cursor {
  color: var(--primary-color);
  font-weight: 300;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 16px;
  min-height: 1.5em;
}

.hero-slogan {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Hero 操作按钮 */
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Hero 视觉区 */
.hero-visual {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-logo-badge {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 60px rgba(99, 102, 241, 0.3);
  animation: hero-badge-float 4s ease-in-out infinite;
  position: relative;
  z-index: 2;
}

.hero-logo-badge span {
  color: white;
  font-size: 72px;
  font-weight: 800;
  line-height: 1;
}

@keyframes hero-badge-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Hero 装饰点 */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  z-index: 1;
  animation: hero-orb-float 4s ease-in-out infinite;
}

.hero-orb.orb-1 {
  width: 12px;
  height: 12px;
  background: var(--primary-color);
  opacity: 0.6;
  top: -10px;
  right: 20px;
  animation-delay: 0s;
}

.hero-orb.orb-2 {
  width: 8px;
  height: 8px;
  background: var(--color-accent-rose);
  opacity: 0.5;
  bottom: 30px;
  left: -5px;
  animation-delay: 1s;
}

.hero-orb.orb-3 {
  width: 10px;
  height: 10px;
  background: var(--color-accent-amber);
  opacity: 0.5;
  top: 50%;
  right: -15px;
  animation-delay: 2s;
}

@keyframes hero-orb-float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.2); }
}

/* 滚动指示器 */
.hero-scroll-indicator {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  animation: hero-bounce 2s ease-in-out infinite;
}

.hero-scroll-indicator:hover {
  color: var(--primary-color);
}

@keyframes hero-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ========== 六、按钮体系 ========== */

.btn-primary-redesign {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  border: none;
  border-radius: var(--radius-full);
  padding: 14px 32px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 20px var(--primary-glow);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.btn-primary-redesign:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.35);
  color: white;
  text-decoration: none;
}

.btn-primary-redesign:active {
  transform: translateY(0);
}

.btn-secondary-redesign {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: var(--radius-full);
  padding: 14px 32px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.btn-secondary-redesign:hover {
  background: rgba(99, 102, 241, 0.06);
  border-color: var(--primary-light);
  transform: translateY(-2px);
  color: var(--primary-color);
  text-decoration: none;
}

.btn-ghost-redesign {
  background: rgba(99, 102, 241, 0.06);
  color: var(--primary-color);
  border: none;
  border-radius: var(--radius-full);
  padding: 10px 24px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-ghost-redesign:hover {
  background: rgba(99, 102, 241, 0.12);
  transform: translateY(-1px);
  color: var(--primary-color);
  text-decoration: none;
}

/* ========== 七、文章卡片增强（补充 index.html 内联样式） ========== */

.article-card {
  background: var(--card-bg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(99, 102, 241, 0.2);
}

.article-card::before {
  background: linear-gradient(90deg, var(--primary-color), var(--color-accent-rose), var(--color-accent-amber));
  height: 3px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-slow);
}

.article-card:hover::before {
  transform: scaleX(1);
}

.article-card-image {
  border-right: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg) 0 0 var(--border-radius-lg);
  background: #F5F6FA;
}

body.dark-theme .article-card-image {
  background: #1A2332;
}

.article-card-image img {
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.article-card:hover .article-card-image img {
  transform: scale(1.08);
}

.article-card-tag {
  background: rgba(99, 102, 241, 0.07);
  border: 1px solid rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-full);
  padding: 4px 14px;
  transition: all var(--transition-fast);
}

.article-card-tag:hover {
  background: rgba(99, 102, 241, 0.14);
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.12);
}

.article-card-tag a {
  color: var(--primary-color) !important;
}

.article-card-title a {
  background: linear-gradient(to right, var(--primary-color), var(--primary-color));
  background-size: 0% 2px;
  background-position: 0% 100%;
  background-repeat: no-repeat;
  transition: background-size var(--transition-base);
}

.article-card:hover .article-card-title a {
  background-size: 100% 2px;
}

.article-card-title a:hover {
  color: var(--text-primary) !important;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-color) !important;
  font-weight: 600;
  font-size: 0.88rem;
  transition: gap var(--transition-fast);
}

.read-more:hover {
  gap: 10px;
  color: var(--primary-dark) !important;
}

/* 卡片入场动画 */
.card-enter {
  opacity: 0;
  transform: translateY(30px);
}

.card-visible {
  animation: cardFadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 覆盖 index.html 中 nth-child 的硬编码动画 */
.article-card.card-enter {
  animation: none;
  opacity: 0;
  transform: translateY(30px);
}

/* ========== 八、精选区（Featured Section）增强 ========== */

.featured-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 40%, #7C3AED 100%) !important;
  border-radius: var(--radius-xl) !important;
  padding: 36px !important;
  margin-bottom: 36px !important;
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.25) !important;
  position: relative;
  overflow: hidden;
}

.featured-section::before {
  background: none !important;
}

.featured-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: 20%;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  filter: blur(30px);
  pointer-events: none;
}

.featured-badge {
  background: rgba(255, 255, 255, 0.2) !important;
  backdrop-filter: blur(8px) !important;
  -webkit-backdrop-filter: blur(8px) !important;
  color: white !important;
  padding: 6px 16px !important;
  border-radius: var(--radius-full) !important;
  font-size: 0.8rem !important;
  font-weight: 600 !important;
  letter-spacing: 0.5px !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
}

.featured-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
}

.featured-description {
  font-size: 14px;
  opacity: 0.9;
  line-height: 1.5;
}

.featured-image {
  border-radius: var(--radius-md) !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2) !important;
}

/* ========== 九、侧边栏美化 ========== */

.sidebar-section {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color) !important;
  padding: 24px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  border-left: 1px solid var(--border-color) !important;
}

.sidebar-section::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 3px;
  background: linear-gradient(180deg, var(--primary-color), var(--primary-light));
  border-radius: 0 3px 3px 0;
}

.sidebar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-title::after {
  width: 32px;
  background: var(--primary-color);
}

.latest-article-link,
.archive-list li a,
.sidebar-link {
  color: var(--text-secondary) !important;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  padding: 8px 0;
  border-radius: 0;
}

.latest-article-link:hover,
.archive-list li a:hover,
.sidebar-link:hover {
  color: var(--primary-color) !important;
  transform: translateX(6px);
  background: transparent;
}

.latest-article-item,
.hot-article-item,
.archive-list li {
  border-bottom: 1px solid var(--color-border-light);
}

.archive-count {
  background: rgba(99, 102, 241, 0.08);
  color: var(--primary-color);
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

/* ========== 十、分页美化 ========== */

.pagination .page-link {
  border-radius: var(--radius-md) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--text-secondary) !important;
  background: var(--bg-primary) !important;
  transition: all var(--transition-fast) !important;
}

.pagination .page-link:hover {
  background: var(--primary-bg) !important;
  border-color: var(--primary-color) !important;
  color: var(--primary-color) !important;
}

.pagination .page-item.active .page-link {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light)) !important;
  border-color: var(--primary-color) !important;
  color: white !important;
  box-shadow: 0 2px 12px var(--primary-glow) !important;
}

.pagination .page-item.disabled .page-link {
  color: var(--text-muted) !important;
  background: var(--bg-primary) !important;
}

/* ========== 十一、章节标题 ========== */

.section-header {
  border-bottom: 2px solid var(--border-color);
}

.section-header::after {
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.section-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.section-title {
  color: var(--text-primary);
}

.section-subtitle {
  color: var(--text-light);
}

/* ========== 十二、空状态美化 ========== */

.empty-state {
  background: var(--card-bg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 2px dashed var(--border-color);
}

.empty-state h3 {
  color: var(--text-primary);
}

.empty-state p {
  color: var(--text-secondary);
}

.empty-state-btn {
  background: var(--primary-color);
  border-radius: var(--border-radius-md);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
  transition: all var(--transition-base);
}

.empty-state-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

/* ========== 十三、发布按钮 ========== */

.blog-header .publish-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light)) !important;
  border-radius: var(--radius-full) !important;
  box-shadow: 0 4px 16px var(--primary-glow) !important;
}

.blog-header .publish-btn:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color)) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4) !important;
}

/* ========== 十四、全局按钮增强 ========== */

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)) !important;
  border: none !important;
  border-radius: var(--radius-md) !important;
  box-shadow: 0 4px 12px var(--primary-glow) !important;
}

.btn-primary:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35) !important;
}

/* ========== 十五、暗色模式补充覆盖 ========== */

/* Hero 暗色 */
body.dark-theme .hero-section {
  background: linear-gradient(135deg, #0F172A 0%, #1A1630 30%, #1A1A2E 60%, #0F172A 100%);
}
body.dark-theme .hero-title { color: var(--text-primary); }
body.dark-theme .hero-subtitle { color: var(--text-secondary); }
body.dark-theme .hero-slogan { color: var(--text-muted); }
body.dark-theme .hero-scroll-indicator { color: var(--text-muted) !important; }
body.dark-theme .hero-scroll-indicator:hover { color: var(--primary-light) !important; }

/* 导航栏暗色强化 */
body.dark-theme .blog-header {
  background: rgba(15, 23, 42, 0.92) !important;
  border-bottom: 1px solid rgba(99, 102, 241, 0.12) !important;
}
body.dark-theme .blog-header.scrolled {
  background: rgba(15, 23, 42, 0.95) !important;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3) !important;
}
body.dark-theme .blog-nav .nav {
  background: var(--color-surface) !important;
  border-color: var(--color-border) !important;
}
body.dark-theme .blog-nav .nav a {
  color: var(--text-secondary) !important;
}
body.dark-theme .blog-nav .nav a:hover {
  color: var(--primary-light) !important;
  background: rgba(99, 102, 241, 0.1) !important;
}
body.dark-theme .blog-nav .nav a.active {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)) !important;
  color: white !important;
}
body.dark-theme .blog-header .search-group {
  background: var(--color-surface) !important;
  border-color: var(--color-border) !important;
}
body.dark-theme .blog-header input[name='keyword'] {
  color: var(--text-primary) !important;
}
body.dark-theme .blog-header .login-btn {
  background: var(--color-surface) !important;
  border-color: var(--color-border) !important;
  color: var(--text-primary) !important;
}
body.dark-theme .blog-header .login-btn:hover {
  border-color: var(--primary-light) !important;
  color: var(--primary-light) !important;
  background: rgba(99, 102, 241, 0.08) !important;
}
body.dark-theme .theme-toggle-btn {
  background: var(--color-surface) !important;
  border-color: var(--color-border) !important;
}
body.dark-theme .user-info-wrapper {
  background: var(--color-surface) !important;
  border-color: var(--color-border) !important;
}
body.dark-theme .user-nickname { color: var(--text-primary) !important; }
body.dark-theme .blog-nav .dropdown .dropdown-menu,
body.dark-theme .user-info-wrapper .dropdown-menu {
  background: var(--color-surface) !important;
  border-color: var(--color-border) !important;
}
body.dark-theme .blog-nav .dropdown .dropdown-item {
  color: var(--text-primary) !important;
}
body.dark-theme .blog-nav .dropdown .dropdown-item:hover {
  color: var(--primary-light) !important;
  background: rgba(99, 102, 241, 0.1) !important;
}

/* 文章卡片暗色 */
body.dark-theme .article-card {
  background: var(--card-bg);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}
body.dark-theme .article-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-card-hover);
}
body.dark-theme .article-card::before {
  background: linear-gradient(90deg, var(--primary-light), var(--primary-color));
}
body.dark-theme .article-card-image {
  background: #1A2332;
  border-right-color: var(--border-color);
}
body.dark-theme .article-card-tag {
  background: rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.18);
}
body.dark-theme .article-card-tag a { color: var(--primary-light) !important; }
body.dark-theme .article-card-tag:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--primary-light);
}
body.dark-theme .article-card-title { color: var(--text-primary); }
body.dark-theme .article-card-title a { color: var(--text-primary) !important; }
body.dark-theme .article-card-summary { color: var(--text-secondary); }
body.dark-theme .article-card-info { color: var(--text-muted); }
body.dark-theme .article-card-author { color: var(--primary-light) !important; }
body.dark-theme .article-card-footer { color: var(--text-muted); }
body.dark-theme .read-more { color: var(--primary-light) !important; }
body.dark-theme .read-more:hover { color: var(--primary-color) !important; }

/* 精选区暗色 */
body.dark-theme .featured-section {
  background: linear-gradient(135deg, #312E81 0%, #4338CA 40%, #5B21B6 100%) !important;
}

/* 侧边栏暗色 */
body.dark-theme .sidebar-section {
  background: var(--bg-primary) !important;
  border-color: var(--border-color) !important;
}
body.dark-theme .sidebar-title {
  color: var(--text-primary) !important;
  border-bottom-color: var(--border-color) !important;
}
body.dark-theme .latest-article-link,
body.dark-theme .archive-list li a,
body.dark-theme .sidebar-link {
  color: var(--text-secondary) !important;
}
body.dark-theme .latest-article-link:hover,
body.dark-theme .archive-list li a:hover,
body.dark-theme .sidebar-link:hover {
  color: var(--primary-light) !important;
}
body.dark-theme .latest-article-item,
body.dark-theme .hot-article-item,
body.dark-theme .archive-list li {
  border-bottom-color: var(--border-color) !important;
}
body.dark-theme .archive-count {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary-light);
}

/* 分页暗色 */
body.dark-theme .pagination .page-link {
  background: var(--bg-primary) !important;
  border-color: var(--border-color) !important;
  color: var(--text-secondary) !important;
}
body.dark-theme .pagination .page-link:hover {
  background: var(--primary-bg) !important;
  border-color: var(--primary-color) !important;
  color: var(--primary-light) !important;
}
body.dark-theme .pagination .page-item.active .page-link {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)) !important;
  border-color: var(--primary-color) !important;
  color: white !important;
}
body.dark-theme .pagination .page-item.disabled .page-link {
  background: var(--bg-primary) !important;
  border-color: var(--border-color) !important;
  color: var(--text-muted) !important;
}

/* 空状态暗色 */
body.dark-theme .empty-state {
  background: var(--card-bg);
  border-color: var(--border-color);
}
body.dark-theme .empty-state h3 { color: var(--text-primary); }
body.dark-theme .empty-state p { color: var(--text-secondary); }
body.dark-theme .empty-state-btn { background: var(--primary-color); }
body.dark-theme .empty-state-btn:hover { background: var(--primary-dark); }

/* 章节标题暗色 */
body.dark-theme .section-header { border-bottom-color: var(--border-color); }
body.dark-theme .section-header::after {
  background: linear-gradient(90deg, var(--primary-light), var(--primary-color));
}
body.dark-theme .section-title { color: var(--text-primary); }
body.dark-theme .section-subtitle { color: var(--text-muted); }

/* 登录按钮暗色补充 */
body.dark-theme .login-btn {
  background: var(--color-surface) !important;
  border-color: var(--color-border) !important;
  color: var(--text-primary) !important;
}
body.dark-theme .login-btn:hover {
  border-color: var(--primary-light) !important;
  color: var(--primary-light) !important;
  background: rgba(99, 102, 241, 0.08) !important;
}

/* 下拉菜单暗色 */
body.dark-theme .dropdown-menu {
  background: var(--color-surface) !important;
  border-color: var(--color-border) !important;
}
body.dark-theme .dropdown-item {
  color: var(--text-primary) !important;
}
body.dark-theme .dropdown-item:hover {
  background: rgba(99, 102, 241, 0.1) !important;
  color: var(--primary-light) !important;
}

/* ========== 十六、响应式 ========== */

@media (max-width: 992px) {
  .hero-container {
    flex-direction: column;
    text-align: center;
    gap: 24px;
  }

  .hero-content {
    flex: 1 1 auto;
    width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .hero-logo-badge {
    width: 120px;
    height: 120px;
    border-radius: 24px;
  }

  .hero-logo-badge span {
    font-size: 48px;
  }

  .article-card {
    flex-direction: column;
  }

  .article-card-image {
    width: 100%;
    height: 200px;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
  }

  .article-card-content {
    padding: 20px;
  }
}

@media (max-width: 768px) {
  .hero-section {
    min-height: clamp(300px, 60vh, 500px);
    padding: clamp(24px, 5vh, 40px) 16px;
  }

  .hero-title {
    font-size: clamp(1.5rem, 6vw, 2.5rem);
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .btn-primary-redesign,
  .btn-secondary-redesign {
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  .shape-1 { width: 200px; height: 200px; }
  .shape-2 { width: 120px; height: 120px; }
  .shape-3 { width: 80px; height: 80px; }

  .featured-section {
    padding: 24px !important;
  }

  .sidebar-section {
    padding: 16px;
  }
}