/* ============================================
   Tech IP Theme - AI & Robotics Style
   深色科技风格覆盖层
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f35;
  --bg-card-hover: #222842;
  --bg-header: rgba(10, 14, 26, 0.85);

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-heading: #f1f5f9;

  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;

  --gradient-main: linear-gradient(135deg, #3b82f6, #06b6d4);
  --gradient-purple: linear-gradient(135deg, #8b5cf6, #06b6d4);
  --gradient-green: linear-gradient(135deg, #10b981, #06b6d4);

  --glow-blue: 0 0 20px rgba(59, 130, 246, 0.3);
  --glow-cyan: 0 0 20px rgba(6, 182, 212, 0.3);

  --border-color: rgba(59, 130, 246, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.06);

  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --card-shadow-hover: 0 8px 40px rgba(59, 130, 246, 0.15);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

/* --- Global Reset --- */
html, body {
  background: var(--bg-primary) !important;
  color: var(--text-primary) !important;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.7 !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-cyan) !important;
  text-decoration: none !important;
  transition: var(--transition);
}
a:hover {
  color: var(--accent-blue) !important;
}

::selection {
  background: var(--accent-blue);
  color: #fff;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-blue); border-radius: 3px; }

/* --- Header (半透明 + blur) --- */
.header {
  background: var(--bg-header) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  border-bottom: 1px solid var(--border-color) !important;
  position: fixed !important;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 !important;
  height: auto !important;
}
.header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px !important;
}
.header .name a,
.header .logo a {
  color: var(--text-heading) !important;
  font-weight: 700 !important;
  font-size: 20px !important;
  letter-spacing: -0.5px;
}
.header h1.name {
  margin: 0 !important;
  padding: 0 !important;
  float: none !important;
}
.header .head {
  float: none !important;
}
.header .menu ul {
  display: flex !important;
  gap: 4px;
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
}
.header .menu ul li {
  float: none !important;
}
.header .menu ul li a {
  color: var(--text-secondary) !important;
  font-size: 14px !important;
  padding: 6px 14px !important;
  border-radius: var(--radius-sm) !important;
  transition: var(--transition) !important;
  background: transparent !important;
}
.header .menu ul li a:hover,
.header .menu ul li.current a {
  color: var(--text-heading) !important;
  background: rgba(59, 130, 246, 0.1) !important;
}

/* Search */
.header .schico a {
  color: var(--text-secondary) !important;
}
.header .schfixed {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: var(--card-shadow) !important;
}
.header .schinput {
  background: var(--bg-secondary) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-sm) !important;
}

/* --- Main content area --- */
.main {
  background: var(--bg-primary) !important;
  padding-top: 60px !important;
}
.main.fixed {
  padding-top: 60px !important;
}
.wrapper {
  background: var(--bg-primary) !important;
}

/* --- Banner (原始banner隐藏，用JS替换为hero) --- */
.banner {
  display: none !important;
}

/* --- Hero Section (JS动态插入) --- */
.tech-hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px 60px;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 0%, rgba(59, 130, 246, 0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 50%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
              var(--bg-primary);
}
.tech-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 75% 75%, rgba(6, 182, 212, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
}
@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}
.tech-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
}
.tech-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 20px;
  font-size: 13px;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  font-family: var(--font-mono);
}
.tech-hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.tech-hero h1 {
  font-size: 48px !important;
  font-weight: 800 !important;
  line-height: 1.15 !important;
  color: var(--text-heading) !important;
  margin: 0 0 16px !important;
  letter-spacing: -1px;
}
.tech-hero h1 .gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tech-hero .subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.6;
}
.tech-hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.tech-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none !important;
}
.tech-btn-primary {
  background: var(--gradient-main) !important;
  color: #fff !important;
  box-shadow: var(--glow-blue);
}
.tech-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
  color: #fff !important;
}
.tech-btn-secondary {
  background: rgba(255, 255, 255, 0.05) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-color) !important;
}
.tech-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1) !important;
  border-color: var(--accent-blue) !important;
  transform: translateY(-2px);
}

/* --- Entry Cards (三大入口) --- */
.tech-entries {
  max-width: 1200px;
  margin: -40px auto 0;
  padding: 0 20px;
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tech-entry-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.tech-entry-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0;
  transition: var(--transition);
}
.tech-entry-card:nth-child(1)::before { background: var(--gradient-main); }
.tech-entry-card:nth-child(2)::before { background: var(--gradient-purple); }
.tech-entry-card:nth-child(3)::before { background: var(--gradient-green); }
.tech-entry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--border-color);
}
.tech-entry-card:hover::before { opacity: 1; }
.tech-entry-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.tech-entry-card:nth-child(1) .tech-entry-icon {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}
.tech-entry-card:nth-child(2) .tech-entry-icon {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
}
.tech-entry-card:nth-child(3) .tech-entry-icon {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
}
.tech-entry-card h3 {
  font-size: 18px !important;
  font-weight: 700 !important;
  color: var(--text-heading) !important;
  margin: 0 0 8px !important;
}
.tech-entry-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}
.tech-entry-arrow {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 13px;
  transition: var(--transition);
}
.tech-entry-card:hover .tech-entry-arrow {
  color: var(--accent-cyan);
  transform: translateX(4px);
}

/* --- Series Section (系列模块) --- */
.tech-series-section {
  max-width: 1200px;
  margin: 64px auto 0;
  padding: 0 20px;
}
.tech-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.tech-section-header h2 {
  font-size: 28px !important;
  font-weight: 700 !important;
  color: var(--text-heading) !important;
  margin: 0 !important;
  display: flex;
  align-items: center;
  gap: 12px;
}
.tech-section-header h2::before {
  content: '';
  width: 4px; height: 28px;
  background: var(--gradient-main);
  border-radius: 2px;
}
.tech-section-header .tech-view-all {
  font-size: 14px;
  color: var(--text-muted) !important;
}
.tech-section-header .tech-view-all:hover {
  color: var(--accent-cyan) !important;
}
.tech-series-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tech-series-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.tech-series-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--border-color);
}
.tech-series-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.tech-series-card:nth-child(1) .tech-series-tag {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}
.tech-series-card:nth-child(2) .tech-series-tag {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
}
.tech-series-card:nth-child(3) .tech-series-tag {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
}
.tech-series-card h3 {
  font-size: 20px !important;
  font-weight: 700 !important;
  color: var(--text-heading) !important;
  margin: 0 0 10px !important;
}
.tech-series-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 20px;
  line-height: 1.6;
}
.tech-series-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.tech-series-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* --- Article List (卡片化) --- */
.tech-articles-section {
  max-width: 1200px;
  margin: 64px auto 0;
  padding: 0 20px 64px;
}

/* 覆盖原有列表样式 */
.wrap {
  max-width: 1200px !important;
  margin: 0 auto !important;
  padding: 0 20px !important;
}
.content {
  background: transparent !important;
}
.content .block {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

/* 文章卡片 */
.content .block .post {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-lg) !important;
  padding: 28px !important;
  margin-bottom: 20px !important;
  transition: var(--transition) !important;
  overflow: hidden;
}
.content .block .post:hover {
  transform: translateY(-4px) !important;
  box-shadow: var(--card-shadow-hover) !important;
  border-color: var(--border-color) !important;
}

/* 文章标题 */
.content .block .post h2 {
  margin: 0 0 12px !important;
  padding: 0 !important;
}
.content .block .post h2 a {
  font-size: 20px !important;
  font-weight: 700 !important;
  color: var(--text-heading) !important;
  line-height: 1.4 !important;
}
.content .block .post h2 a:hover {
  color: var(--accent-cyan) !important;
}

/* 文章元信息 */
.content .block .post .info {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
  margin-bottom: 14px !important;
  font-size: 13px !important;
  color: var(--text-muted) !important;
  border: none !important;
  padding: 0 !important;
}
.content .block .post .info span {
  color: var(--text-muted) !important;
  font-family: var(--font-mono) !important;
  font-size: 12px !important;
}
.content .block .post .info span a {
  color: var(--accent-cyan) !important;
  font-size: 12px !important;
}
.content .block .post .info span::before {
  color: var(--text-muted) !important;
}

/* 文章缩略图 */
.content .block .post .postimg {
  border-radius: var(--radius) !important;
  overflow: hidden !important;
  margin: 0 0 0 20px !important;
}
.content .block .post .postimg img {
  border-radius: var(--radius) !important;
  transition: var(--transition) !important;
}
.content .block .post:hover .postimg img {
  transform: scale(1.05);
}

/* 文章摘要 */
.content .block .post .intro {
  color: var(--text-secondary) !important;
  font-size: 14px !important;
  line-height: 1.7 !important;
}

/* 阅读更多按钮 */
.content .block .post .readmore {
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
  padding: 8px 20px !important;
  background: rgba(59, 130, 246, 0.1) !important;
  color: var(--accent-blue) !important;
  border-radius: var(--radius-sm) !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  margin-top: 14px !important;
  transition: var(--transition) !important;
  border: 1px solid rgba(59, 130, 246, 0.2) !important;
}
.content .block .post .readmore:hover {
  background: rgba(59, 130, 246, 0.2) !important;
  transform: translateX(4px) !important;
}

/* 置顶文章 */
.content .block .post.istop,
.content .block .post:has(.istop) {
  border-left: 3px solid var(--accent-blue) !important;
}

/* --- 分页 --- */
.pagebar {
  text-align: center !important;
  padding: 32px 0 !important;
}
.pagebar span,
.pagebar a {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-width: 40px !important;
  height: 40px !important;
  padding: 0 14px !important;
  margin: 0 3px !important;
  border-radius: var(--radius-sm) !important;
  font-size: 14px !important;
  transition: var(--transition) !important;
}
.pagebar a {
  background: var(--bg-card) !important;
  color: var(--text-secondary) !important;
  border: 1px solid var(--border-subtle) !important;
}
.pagebar a:hover {
  background: var(--bg-card-hover) !important;
  border-color: var(--border-color) !important;
  color: var(--text-heading) !important;
}
.pagebar span.now,
.pagebar .current {
  background: var(--gradient-main) !important;
  color: #fff !important;
  border: none !important;
}

/* --- Sidebar --- */
.sidebar {
  background: transparent !important;
}
.sidebar dl {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-lg) !important;
  padding: 24px !important;
  margin-bottom: 20px !important;
}
.sidebar dl dt {
  font-size: 16px !important;
  font-weight: 700 !important;
  color: var(--text-heading) !important;
  padding-bottom: 12px !important;
  margin-bottom: 16px !important;
  border-bottom: 1px solid var(--border-subtle) !important;
}
.sidebar dl dd {
  color: var(--text-secondary) !important;
}
.sidebar dl dd a {
  color: var(--text-secondary) !important;
  font-size: 14px !important;
  padding: 6px 0 !important;
  display: block !important;
  transition: var(--transition) !important;
}
.sidebar dl dd a:hover {
  color: var(--accent-cyan) !important;
  padding-left: 8px !important;
}
.sidebar dl dd ul {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}
.sidebar dl dd ul li {
  padding: 4px 0 !important;
  border-bottom: 1px solid var(--border-subtle) !important;
}
.sidebar dl dd ul li:last-child {
  border-bottom: none !important;
}

/* --- 文章详情页 (Single) --- */
.article .main,
body.article .main,
body[class*="article"] .main {
  padding-top: 80px !important;
}

/* 文章标题 */
.content .block .post > h1 {
  font-size: 32px !important;
  font-weight: 800 !important;
  color: var(--text-heading) !important;
  line-height: 1.3 !important;
  margin: 0 0 16px !important;
  letter-spacing: -0.5px;
}

/* 文章正文 */
.single.postcon {
  color: var(--text-primary) !important;
  font-size: 16px !important;
  line-height: 1.85 !important;
}
.single.postcon h2,
.single.postcon h3,
.single.postcon h4 {
  color: var(--text-heading) !important;
  margin-top: 32px !important;
  font-weight: 700 !important;
}
.single.postcon h2 { font-size: 24px !important; }
.single.postcon h3 { font-size: 20px !important; }
.single.postcon p {
  margin-bottom: 16px !important;
}
.single.postcon img {
  border-radius: var(--radius) !important;
  max-width: 100% !important;
}
.single.postcon a {
  color: var(--accent-cyan) !important;
  text-decoration: underline !important;
  text-decoration-color: rgba(6, 182, 212, 0.3) !important;
  text-underline-offset: 3px !important;
}
.single.postcon a:hover {
  text-decoration-color: var(--accent-cyan) !important;
}

/* 代码块 */
.single.postcon pre,
.single.postcon code {
  font-family: var(--font-mono) !important;
}
.single.postcon pre {
  background: #0d1117 !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius) !important;
  padding: 20px !important;
  overflow-x: auto !important;
  font-size: 14px !important;
  line-height: 1.6 !important;
}
.single.postcon code {
  background: rgba(59, 130, 246, 0.1) !important;
  color: var(--accent-cyan) !important;
  padding: 2px 6px !important;
  border-radius: 4px !important;
  font-size: 0.9em !important;
}
.single.postcon pre code {
  background: transparent !important;
  padding: 0 !important;
  color: var(--text-primary) !important;
}

/* 引用 */
.single.postcon blockquote {
  border-left: 3px solid var(--accent-blue) !important;
  background: rgba(59, 130, 246, 0.05) !important;
  padding: 16px 20px !important;
  margin: 20px 0 !important;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0 !important;
  color: var(--text-secondary) !important;
}

/* 标签 */
.single.postcon .tags {
  margin-top: 32px !important;
  padding-top: 20px !important;
  border-top: 1px solid var(--border-subtle) !important;
}
.single.postcon .tags a {
  display: inline-block !important;
  padding: 4px 12px !important;
  background: rgba(59, 130, 246, 0.1) !important;
  color: var(--accent-blue) !important;
  border-radius: 4px !important;
  font-size: 13px !important;
  margin: 4px 6px 4px 0 !important;
  text-decoration: none !important;
  border: 1px solid rgba(59, 130, 246, 0.2) !important;
  transition: var(--transition) !important;
}
.single.postcon .tags a:hover {
  background: rgba(59, 130, 246, 0.2) !important;
}

/* 上下篇导航 */
.pages {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-lg) !important;
  padding: 24px !important;
  margin: 32px 0 !important;
}
.pages p {
  margin: 8px 0 !important;
  font-size: 14px !important;
}
.pages a {
  color: var(--accent-cyan) !important;
}
.pages .backlist {
  display: inline-block !important;
  padding: 6px 16px !important;
  background: rgba(59, 130, 246, 0.1) !important;
  border-radius: var(--radius-sm) !important;
  font-size: 13px !important;
  margin-bottom: 12px !important;
}

/* --- Author Box (JS插入) --- */
.tech-author-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 32px 0;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.tech-author-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.tech-author-info h4 {
  font-size: 16px !important;
  font-weight: 700 !important;
  color: var(--text-heading) !important;
  margin: 0 0 6px !important;
}
.tech-author-info p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}
.tech-author-tags {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.tech-author-tags span {
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-cyan);
  border-radius: 4px;
  font-family: var(--font-mono);
}

/* --- CTA Module (JS插入) --- */
.tech-cta-box {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 32px 0;
  text-align: center;
}
.tech-cta-box h4 {
  font-size: 20px !important;
  font-weight: 700 !important;
  color: var(--text-heading) !important;
  margin: 0 0 10px !important;
}
.tech-cta-box p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 20px;
}
.tech-cta-box .tech-btn {
  display: inline-flex;
}

/* --- Series Navigator (JS插入) --- */
.tech-series-nav {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
}
.tech-series-nav-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-heading);
}
.tech-series-nav-header span {
  font-size: 18px;
}
.tech-series-nav-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.tech-series-nav-links a {
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
  padding: 8px 16px !important;
  background: rgba(59, 130, 246, 0.1) !important;
  color: var(--accent-blue) !important;
  border-radius: var(--radius-sm) !important;
  font-size: 13px !important;
  border: 1px solid rgba(59, 130, 246, 0.15) !important;
  transition: var(--transition) !important;
}
.tech-series-nav-links a:hover {
  background: rgba(59, 130, 246, 0.2) !important;
  transform: translateY(-2px) !important;
}

/* --- Recommended Articles (JS插入) --- */
.tech-recommend {
  margin: 32px 0;
}
.tech-recommend h4 {
  font-size: 18px !important;
  font-weight: 700 !important;
  color: var(--text-heading) !important;
  margin: 0 0 16px !important;
  display: flex;
  align-items: center;
  gap: 8px;
}
.tech-recommend-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.tech-recommend-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 16px;
  transition: var(--transition);
}
.tech-recommend-item:hover {
  border-color: var(--border-color);
  transform: translateY(-2px);
}
.tech-recommend-item a {
  font-size: 14px !important;
  font-weight: 600 !important;
  color: var(--text-primary) !important;
  line-height: 1.5 !important;
}
.tech-recommend-item:hover a {
  color: var(--accent-cyan) !important;
}

/* --- Comments --- */
.cmts.block {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-lg) !important;
  padding: 28px !important;
  margin-top: 24px !important;
}
.cmtsitem {
  border-bottom: 1px solid var(--border-subtle) !important;
  padding: 16px 0 !important;
}
.cmtsitem:last-child {
  border-bottom: none !important;
}
.cmtshead {
  color: var(--text-muted) !important;
  font-size: 13px !important;
}
.cmtshead a {
  color: var(--accent-cyan) !important;
  font-weight: 600 !important;
}
.cmtsbody {
  color: var(--text-secondary) !important;
  font-size: 14px !important;
  margin: 8px 0 !important;
}

/* Comment Form */
.cmts.block textarea,
.cmts.block input[type="text"],
.cmts.block input[type="email"] {
  background: var(--bg-secondary) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--text-primary) !important;
  border-radius: var(--radius-sm) !important;
  padding: 10px 14px !important;
  transition: var(--transition) !important;
}
.cmts.block textarea:focus,
.cmts.block input:focus {
  border-color: var(--accent-blue) !important;
  outline: none !important;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1) !important;
}
.cmts.block button,
.cmts.block input[type="submit"] {
  background: var(--gradient-main) !important;
  color: #fff !important;
  border: none !important;
  border-radius: var(--radius-sm) !important;
  padding: 10px 24px !important;
  cursor: pointer !important;
  transition: var(--transition) !important;
  font-weight: 600 !important;
}
.cmts.block button:hover,
.cmts.block input[type="submit"]:hover {
  box-shadow: var(--glow-blue) !important;
  transform: translateY(-1px) !important;
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary) !important;
  border-top: 1px solid var(--border-subtle) !important;
  padding: 40px 0 !important;
  margin-top: 0 !important;
}
.footer .fademask {
  display: none !important;
}
.footer .wrap {
  text-align: center !important;
}
.footer h3,
.footer h4 {
  color: var(--text-muted) !important;
  font-size: 13px !important;
  font-weight: 400 !important;
  margin: 4px 0 !important;
}
.footer a {
  color: var(--text-secondary) !important;
}
.footer a:hover {
  color: var(--accent-cyan) !important;
}

/* --- 404 --- */
.error-page {
  text-align: center;
  padding: 120px 20px;
}

/* --- Related Articles (Mutuality) --- */
.mutuality {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-lg) !important;
  padding: 24px !important;
  margin: 24px 0 !important;
}
.mutuality a {
  color: var(--text-secondary) !important;
  display: block !important;
  padding: 6px 0 !important;
}
.mutuality a:hover {
  color: var(--accent-cyan) !important;
}

/* --- Responsive --- */
@media (max-width: 960px) {
  .tech-entries {
    grid-template-columns: 1fr;
    margin-top: -20px;
  }
  .tech-series-grid {
    grid-template-columns: 1fr;
  }
  .tech-hero h1 {
    font-size: 32px !important;
  }
  .tech-hero .subtitle {
    font-size: 15px;
  }
  .tech-hero {
    min-height: 400px;
    padding: 80px 20px 40px;
  }
  .tech-recommend-list {
    grid-template-columns: 1fr;
  }
  .tech-author-box {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .tech-author-tags {
    justify-content: center;
  }
  /* sidebar 在移动端隐藏或下移 */
  .wrap {
    display: flex !important;
    flex-direction: column !important;
  }
  .sidebar {
    width: 100% !important;
    margin-top: 24px !important;
  }
  .content {
    width: 100% !important;
  }
}
@media (max-width: 640px) {
  .tech-hero h1 {
    font-size: 26px !important;
  }
  .tech-hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  .tech-btn {
    width: 100%;
    justify-content: center;
  }
  .header .menu ul {
    flex-direction: column !important;
  }
}

/* --- Mask overlay for article page --- */
.mask {
  display: none !important;
}

/* --- Back to top button --- */
.gotop {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--accent-blue) !important;
  border-radius: var(--radius) !important;
}
.gotop:hover {
  box-shadow: var(--glow-blue) !important;
}