/* =============================
   基础变量 & 设计令牌
   ============================= */
:root {
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --secondary: #8b5cf6;
  --accent: #f59e0b;
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-bg-heavy: rgba(255, 255, 255, 0.92);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --glass-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.12);
  --blur: blur(12px);
  --blur-heavy: blur(24px);
  --text: #1e293b;
  --text-light: #64748b;
  --bg: #f0f4f8;
  --radius: 16px;
  --radius-lg: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* =============================
   全局重置
   ============================= */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* =============================
   毛玻璃卡片（仅导航/页脚/Hero按钮使用）
   ============================= */
/* glass-card 基础类保留给 header/footer/btn-glass */

/* =============================
   鼠标跟踪光晕卡片
   ============================= */
.glass-card-glow {
  position: relative;
  overflow: hidden;
}

.glass-card-glow .card-glow-inner {
  position: absolute;
  border-radius: 50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(
    circle,
    color-mix(in oklch, var(--primary) 60%, transparent),
    color-mix(in oklch, var(--primary) 30%, transparent),
    color-mix(in oklch, var(--primary) 10%, transparent),
    transparent 70%
  );
  filter: blur(24px);
  opacity: 0;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 1;
  transition: opacity 0.3s ease-out;
}

.glass-card-glow:hover .card-glow-inner {
  opacity: 1;
}

.glass-card-glow > * {
  position: relative;
  z-index: 2;
}

.glass-card-glow:hover {
  border-color: color-mix(in oklch, var(--primary) 25%, transparent);
  box-shadow:
    0 12px 40px color-mix(in oklch, var(--primary) 40%, transparent),
    0 0 24px color-mix(in oklch, var(--primary) 15%, transparent);
  transform: translateY(-4px);
}

/* =============================
   毛玻璃导航栏
   ============================= */
.glass-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
  transition: all var(--transition);
}

.glass-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  transition: opacity var(--transition);
}

.logo:hover { opacity: 0.8; }

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-title {
  font-size: 1.2rem;
  font-weight: 700;
}
.brand-slogan {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-light);
  white-space: nowrap;
}

.main-nav { display: flex; gap: 2rem; }

.nav-link {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  position: relative;
  padding: 6px 0;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transition: all var(--transition);
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text);
  transition: transform var(--transition);
}

.mobile-toggle:hover {
  transform: scale(1.1);
}

/* =============================
   Hero 英雄区
   ============================= */
.hero {
  margin-top: 70px;
  height: 70vh;
  min-height: 500px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.hero-content {
  position: relative;
  z-index: 2;
}

/* 标题文字光晕呼吸动画 */
.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  text-shadow:
    0 0 20px rgba(255, 255, 255, 0.5),
    0 0 40px color-mix(in srgb, var(--primary) 40%, transparent),
    0 2px 10px rgba(0, 0, 0, 0.3);
  animation: title-glow-breath 4s ease-in-out infinite;
}

@keyframes title-glow-breath {
  0%, 100% {
    text-shadow:
      0 0 20px rgba(255, 255, 255, 0.5),
      0 0 40px color-mix(in srgb, var(--primary) 40%, transparent),
      0 2px 10px rgba(0, 0, 0, 0.3);
  }
  50% {
    text-shadow:
      0 0 30px rgba(255, 255, 255, 0.7),
      0 0 60px color-mix(in srgb, var(--primary) 60%, transparent),
      0 0 20px color-mix(in srgb, var(--primary) 30%, transparent),
      0 2px 10px rgba(0, 0, 0, 0.3);
  }
}

/* 副标题打字机效果 */
.hero-subtitle {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.hero-subtitle.typewriter {
  overflow: hidden;
  border-right: 2px solid rgba(255, 255, 255, 0.8);
  white-space: nowrap;
  margin-left: auto;
  margin-right: auto;
  display: inline-block;
  letter-spacing: 0.05em;
  animation:
    typing 3s steps(30, end),
    blink-caret 0.6s step-end infinite;
}

@keyframes typing {
  from { max-width: 0; }
  to { max-width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: rgba(255, 255, 255, 0.8); }
}

/* 毛玻璃按钮 */
.btn-glass {
  display: inline-block;
  padding: 14px 32px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: white;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-bounce);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.btn-glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), rgba(255,255,255,0.05));
  pointer-events: none;
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.btn-glass::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-glass:active::after {
  width: 300px;
  height: 300px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.btn-ghost::before {
  background: linear-gradient(to bottom, rgba(255,255,255,0.2), rgba(255,255,255,0.02));
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.18);
}

/* =============================
   滚动揭示动画
   ============================= */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease-out, transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease-out, transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-left.revealed,
.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* 错开延迟 */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* =============================
   通用区块
   ============================= */
section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 56px;
  color: var(--text);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  margin: 16px auto 0;
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 1.1rem;
  margin-top: 12px;
  margin-bottom: 50px;
}

/* 特色区块 */
.features {
  padding: 100px 0;
  background: var(--bg);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.feature-card {
  padding: 32px 20px;
  text-align: center;
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.1), 0 0 20px color-mix(in srgb, var(--primary) 12%, transparent);
  border-color: color-mix(in srgb, var(--primary) 20%, transparent);
}

.feature-card:hover {
  transform: translateY(-8px);
}

.feature-icon {
  font-size: 2.8rem;
  margin-bottom: 1rem;
  display: inline-block;
  animation: icon-float 3s ease-in-out infinite;
}

.feature-card:nth-child(odd) .feature-icon {
  animation-delay: 0s;
}

.feature-card:nth-child(even) .feature-icon {
  animation-delay: 1.5s;
}

@keyframes icon-float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-10px) scale(1.1); }
}

/* =============================
   文章卡片网格
   ============================= */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 30px;
}

.post-card {
  overflow: hidden;
  transition: all var(--transition);
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.1);
  border-color: color-mix(in srgb, var(--primary) 15%, transparent);
}

.post-card .card-glow-inner {
  width: 300px;
  height: 300px;
}

.post-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.post-card:hover .post-thumb {
  transform: scale(1.05);
}

.post-card-body {
  padding: 20px;
}

.post-card-body time {
  font-size: 0.85rem;
  color: var(--text-light);
}

.post-card-body h3 {
  margin: 10px 0;
  font-size: 1.2rem;
  line-height: 1.4;
}

.post-card-body h3 a {
  text-decoration: none;
  color: var(--text);
  transition: color var(--transition);
  background: linear-gradient(var(--primary), var(--primary)) left bottom / 0% 2px no-repeat;
  padding-bottom: 2px;
  transition: background-size 0.4s ease;
}

.post-card:hover h3 a {
  color: var(--primary);
  background-size: 100% 2px;
}

.post-card-body p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* =============================
   关于预览
   ============================= */
.about-preview {
  margin: 80px auto;
  max-width: 1000px;
  padding: 60px 40px;
  text-align: center;
}

/* =============================
   内页通用
   ============================= */
.single-container {
  margin-top: 100px;
  margin-bottom: 60px;
}

.single-article, .single-page {
  padding: 40px;
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.article-header h1 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.meta {
  display: flex;
  gap: 15px;
  color: var(--text-light);
  margin-bottom: 2rem;
  flex-wrap: wrap;
  align-items: center;
}

.tag {
  background: var(--glass-bg);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
}

.tag:hover {
  background: color-mix(in srgb, var(--primary) 15%, white);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.article-content {
  font-size: 1.1rem;
  line-height: 1.8;
}

.article-content img,
.single-page img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition);
}

.article-content img:hover {
  transform: scale(1.02);
}

/* 响应式视频/嵌入 */
.article-content iframe,
.article-content video,
.article-content embed,
.article-content object,
.single-page iframe,
.single-page video,
.single-page embed,
.single-page object {
  max-width: 100%;
}

.article-content .video-container,
.single-page .video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  max-width: 100%;
}

.article-content .video-container iframe,
.article-content .video-container video,
.article-content .video-container embed,
.article-content .video-container object,
.single-page .video-container iframe,
.single-page .video-container video,
.single-page .video-container embed,
.single-page .video-container object {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* 响应式表格 */
.article-content table,
.single-page table {
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

/* 代码块与长文本换行 */
.article-content pre,
.article-content code,
.single-page pre,
.single-page code {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.article-content,
.single-page > div {
  overflow-wrap: break-word;
  word-break: break-word;
}

/* =============================
   分类/标签/友链
   ============================= */
.category-grid, .links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}

.category-card, .link-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 24px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  transition: all var(--transition-bounce);
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius);
  box-shadow: 0 3px 12px rgba(0,0,0,0.05);
}

.category-card:hover, .link-card:hover {
  color: var(--primary);
  transform: translateY(-4px);
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.1),
    0 0 16px color-mix(in srgb, var(--primary) 15%, transparent);
}

.category-card .count {
  font-size: 0.8rem;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 12px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.tag-item {
  padding: 10px 20px;
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  transition: all var(--transition-bounce);
  font-size: 0.95rem;
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 50px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.tag-item:hover {
  color: var(--primary);
  transform: translateY(-3px);
  box-shadow:
    0 8px 20px rgba(0, 0, 0, 0.08),
    0 0 16px color-mix(in srgb, var(--primary) 20%, transparent);
}

/* 友链卡片图片 */
.link-card img {
  border-radius: 12px;
  transition: transform var(--transition);
}

.link-card:hover img {
  transform: scale(1.15) rotate(5deg);
}

/* =============================
   分页
   ============================= */
.pagination {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 50px;
  padding: 16px 28px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: var(--radius);
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.pagination a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 12px;
  transition: all var(--transition);
}

.pagination a:hover {
  background: color-mix(in srgb, var(--primary) 8%, transparent);
  transform: translateY(-1px);
}

/* =============================
   页脚
   ============================= */
.glass-footer {
  margin-top: 80px;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.5);
  padding: 40px 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-info h3 {
  margin-bottom: 4px;
}
.footer-slogan {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 8px;
}
.footer-copyright {
  font-size: 0.8rem;
  color: var(--text-light);
}
.footer-contact {
  font-weight: 600;
  color: var(--primary);
  font-size: 1.1rem;
}

.footer-links {
  display: flex;
  gap: 30px;
}

.footer-links a {
  color: var(--text);
  text-decoration: none;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary);
  transition: width var(--transition);
}

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

.footer-links a:hover::after {
  width: 100%;
}

/* =============================
   背景浮动装饰
   ============================= */
.bg-blobs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
}

.bg-blob-1 {
  width: 500px;
  height: 500px;
  background: var(--primary);
  top: -10%;
  right: -10%;
  animation: blob-float-1 20s ease-in-out infinite;
}

.bg-blob-2 {
  width: 400px;
  height: 400px;
  background: var(--secondary);
  bottom: -10%;
  left: -5%;
  animation: blob-float-2 25s ease-in-out infinite;
}

.bg-blob-3 {
  width: 300px;
  height: 300px;
  background: var(--accent);
  top: 60%;
  right: 20%;
  animation: blob-float-3 18s ease-in-out infinite;
}

@keyframes blob-float-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -60px) scale(1.15); }
  66% { transform: translate(-20px, 40px) scale(0.9); }
}

@keyframes blob-float-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-30px, 50px) scale(1.1); }
  66% { transform: translate(20px, -30px) scale(0.85); }
}

@keyframes blob-float-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(50px, -40px) scale(1.2); }
}

/* =============================
   脉冲环（CTA 装饰）
   ============================= */
.pulse-ring {
  position: relative;
}

.pulse-ring::before,
.pulse-ring::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: inherit;
  border: 2px solid var(--primary);
  opacity: 0;
  animation: ring-pulse 2s ease-out infinite;
  pointer-events: none;
}

.pulse-ring::after {
  animation-delay: 1s;
}

@keyframes ring-pulse {
  0% {
    inset: -4px;
    opacity: 0.6;
  }
  100% {
    inset: -30px;
    opacity: 0;
  }
}

/* =============================
   prefers-reduced-motion
   ============================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* =============================
   文字动效 — 标题（标题特效）
   通过 settings.title_effect 切换
   ============================= */

/* 变量：可通过 settings.yaml 覆盖 */
:root {
  --title-color: var(--primary);
  --subtitle-color: var(--primary);
}

/* --- 粒子轨道 --- */
.hero-title.effect-particles {
  position: relative;
  display: inline-block;
}
.hero-title.effect-particles::before,
.hero-title.effect-particles::after,
.hero-title.effect-particles span::before {
  content: '';
  position: absolute;
  border-radius: 50%;
  z-index: -1;
  pointer-events: none;
}
.hero-title.effect-particles::before {
  width: 8px; height: 8px;
  background: radial-gradient(circle, #fff, var(--title-color));
  box-shadow: 0 0 10px #fff, 0 0 20px var(--title-color);
  top: -15px; right: 10%;
  animation: particle-orbit-1 6s linear infinite;
}
.hero-title.effect-particles::after {
  width: 5px; height: 5px;
  background: radial-gradient(circle, #fff, var(--secondary));
  box-shadow: 0 0 8px #fff, 0 0 16px var(--secondary);
  bottom: -10px; left: 15%;
  animation: particle-orbit-2 5s linear infinite reverse;
}
/* 星光 */
.hero-title.effect-starlight {
  position: relative; display: inline-block;
}
.hero-title.effect-starlight::before,
.hero-title.effect-starlight::after {
  content: '';
  position: absolute;
  width: 3px; height: 3px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 4px #fff, 0 0 10px var(--secondary), 0 0 18px var(--title-color);
  opacity: 0;
  z-index: -1;
  pointer-events: none;
}
.hero-title.effect-starlight::before { top: -12px; left: 5%; animation: star-twinkle 3s infinite; }
.hero-title.effect-starlight::after { bottom: -10px; right: 5%; animation: star-twinkle 2.5s infinite 0.8s; }

/* --- 流光渐变 --- */
.hero-title.gradient-flow {
  background: linear-gradient(
    90deg,
    var(--title-color) 0%,
    color-mix(in srgb, var(--title-color) 60%, white 40%) 25%,
    var(--title-color) 50%,
    color-mix(in srgb, var(--title-color) 60%, white 40%) 75%,
    var(--title-color) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: shimmer-flow 4s linear infinite;
  text-shadow: none;
}

@keyframes shimmer-flow {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* --- 描边发光 --- */
.hero-title.stroke-glow {
  color: rgba(255, 255, 255, 0.95);
  -webkit-text-stroke: 2px var(--title-color);
  position: relative;
}
.hero-title.stroke-glow::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse 120% 100% at 50% 50%, var(--title-color), transparent 70%);
  filter: blur(25px);
  opacity: 0.4;
  z-index: -1;
  pointer-events: none;
  animation: glow-breath 5s ease-in-out infinite;
}

@keyframes glow-breath {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.1); }
}

/* --- 简约阴影 --- */
.hero-title.simple-shadow {
  color: var(--title-color);
  text-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 4px 8px rgba(0,0,0,0.2),
    0 0 20px color-mix(in srgb, var(--title-color) 30%, transparent);
  animation: none;
}

/* =============================
   文字动效 — 副标题
   ============================= */

.hero-subtitle.gradient-flow {
  background: linear-gradient(45deg, var(--title-color), var(--secondary), var(--accent), var(--title-color));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: rainbow-flow 4s ease-in-out infinite;
  border-right: none;
  white-space: normal;
}

@keyframes rainbow-flow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero-subtitle.subtle-glow {
  color: rgba(255, 255, 255, 0.95);
  text-shadow:
    0 0 20px var(--subtitle-color),
    0 0 35px color-mix(in srgb, var(--subtitle-color) 60%, transparent),
    0 2px 4px rgba(0,0,0,0.3);
  border-right: none;
  white-space: normal;
}

.hero-subtitle.fade-pulse {
  color: var(--subtitle-color);
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
  animation: fade-breath 4s ease-in-out infinite;
  border-right: none;
  white-space: normal;
}

@keyframes fade-breath {
  0%, 100% { opacity: 0.75; }
  50% { opacity: 1; }
}

/* =============================
   3D 倾斜卡片（文字交互）
   ============================= */
.tilt-card {
  perspective: 800px;
}
.tilt-card-inner {
  transform-style: preserve-3d;
  transition: transform 0.1s ease-out;
}
.tilt-glow {
  position: absolute;
  border-radius: 50%;
  width: 120px; height: 120px;
  background: radial-gradient(circle, color-mix(in oklch, var(--primary) 50%, transparent), transparent 70%);
  filter: blur(30px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  transform: translate(-50%, -50%);
  z-index: 1;
}
.tilt-card:hover .tilt-glow {
  opacity: 1;
}

/* =============================
   通用粒子轨道动画
   ============================= */
@keyframes particle-orbit-1 {
  0%, 100% { transform: translateX(0) translateY(0) scale(1); }
  25% { transform: translateX(100%) translateY(-20px) scale(1.1); }
  50% { transform: translateX(120%) translateY(5px) scale(1.2); }
  75% { transform: translateX(30%) translateY(15px) scale(1.1); }
}
@keyframes particle-orbit-2 {
  0%, 100% { transform: translateX(0) translateY(0) scale(1); }
  25% { transform: translateX(-80%) translateY(15px) scale(1.1); }
  50% { transform: translateX(-100%) translateY(-5px) scale(1.2); }
  75% { transform: translateX(-30%) translateY(-15px) scale(1.1); }
}
@keyframes star-twinkle {
  0%, 100% { opacity: 0; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

/* =============================
   企业化 — 统计数字条
   ============================= */
.stats-section {
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 12%, #fff), color-mix(in srgb, var(--primary) 6%, #fff));
  color: var(--text);
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  text-align: center;
}
.stats-item { position: relative; z-index: 2; }
.stats-number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}
.stats-number .suffix {
  font-size: 1.5rem;
  font-weight: 600;
  opacity: 0.85;
}
.stats-label {
  font-size: 1rem;
  opacity: 0.85;
  font-weight: 500;
}

/* =============================
   企业化 — 课程体系
   ============================= */
.courses-section { background: #fff; padding: 90px 0; }

.course-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.course-tab {
  padding: 12px 28px;
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  transition: all var(--transition-bounce);
  font-size: 0.95rem;
}
.course-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.course-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--primary) 40%, transparent);
}
.course-tab-content { display: none; }
.course-tab-content.active { display: block; }

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}
/* 课程卡片 */
a.course-card {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.course-card {
  overflow: hidden;
  position: relative;
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
  border-color: color-mix(in srgb, var(--primary) 20%, transparent);
}
.course-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.course-card:hover .course-card-img {
  transform: scale(1.05);
}
.course-card .card-glow-inner {
  width: 250px; height: 250px;
}
.course-card-body {
  padding: 24px;
}
.course-card-body h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}
.course-card-body p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.course-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.course-price {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.1rem;
}
.course-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent);
  color: white;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  z-index: 3;
}

/* =============================
   企业化 — 师资团队
   ============================= */
.teachers-section { background: var(--bg); padding: 80px 0; }
.teachers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 30px;
}
.teacher-card {
  text-align: center;
  padding: 36px 28px;
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  transition: all var(--transition);
}
.teacher-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--glass-border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  transition: all var(--transition-bounce);
  background: color-mix(in srgb, var(--primary) 10%, white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}
.teacher-card:hover .teacher-avatar {
  transform: scale(1.08);
  border-color: var(--primary);
  box-shadow: 0 8px 28px color-mix(in srgb, var(--primary) 30%, transparent);
}
.teacher-card h3 { font-size: 1.2rem; margin-bottom: 4px; }
.teacher-title {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.teacher-desc {
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* =============================
   企业化 — 家长好评（轮播）
   ============================= */
.testimonials-section { background: #fff; padding: 90px 0; }
.testimonials-carousel {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}
.testimonials-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.testimonial-card {
  flex: 0 0 100%;
  padding: 40px 50px;
  text-align: center;
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.testimonial-content {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 24px;
  position: relative;
}
.testimonial-content::before {
  content: '\201C';
  font-size: 4rem;
  color: color-mix(in srgb, var(--primary) 25%, transparent);
  position: absolute;
  left: -30px;
  top: -20px;
  line-height: 1;
}
.testimonial-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 12px;
  background: color-mix(in srgb, var(--primary) 8%, white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.testimonial-name {
  font-weight: 700;
  color: var(--text);
}
.testimonial-tag { color: var(--text-light); font-size: 0.85rem; margin-top: 4px; }
.testimonial-stars {
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.testimonial-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}
.testimonial-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--glass-border);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}
.testimonial-dot.active {
  background: var(--primary);
  transform: scale(1.3);
}
.testimonial-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--text);
  transition: all var(--transition);
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
}
.testimonial-arrow:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.testimonial-arrow.prev { left: 0; }
.testimonial-arrow.next { right: 0; }

/* =============================
   企业化 — 关于我们
   ============================= */
.about-section { background: var(--bg); padding: 80px 0; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-card {
  position: relative;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px;
  box-shadow:
    0 4px 6px rgba(80, 100, 160, 0.04),
    0 12px 24px rgba(80, 100, 160, 0.07),
    0 30px 60px rgba(80, 100, 160, 0.10);
  transition: transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 6px 12px rgba(80, 100, 160, 0.06),
    0 20px 40px rgba(80, 100, 160, 0.10),
    0 40px 80px rgba(80, 100, 160, 0.14);
}

.about-image {
  display: block;
  width: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) - 8px);
}
.about-text h2 { font-size: 2rem; margin-bottom: 20px; }
.about-text p { color: var(--text-light); line-height: 1.9; font-size: 1.05rem; }

/* =============================
   企业化 — 荣誉资质
   ============================= */
.awards-section { background: #fff; padding: 70px 0; }
.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}
.award-card {
  padding: 32px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius);
  box-shadow: 0 3px 12px rgba(0,0,0,0.04);
  transition: all var(--transition);
}
.award-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.06);
  border-color: color-mix(in srgb, var(--primary) 20%, transparent);
}
.award-icon {
  font-size: 2.5rem;
  transition: transform var(--transition-bounce);
}
.award-card:hover .award-icon {
  transform: scale(1.2) rotate(-5deg);
}
.award-card span {
  font-weight: 600;
  color: var(--text);
}

 /* =============================
   企业化 — FAQ 折叠面板
   ============================= */
.faq-section { }
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  border-bottom: none;
  transition: border-color 0.2s, background 0.25s;
}
.faq-item:last-child { border-bottom: none; }
.faq-item.active {
  border-left: 3px solid var(--primary);
  background: transparent;
}
.faq-question {
  width: 100%;
  padding: 16px 20px;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid #dde3ea;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  transition: all 0.25s ease;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  line-height: 1.6;
}
.faq-question:hover {
  border-color: #93c5fd;
  box-shadow: 0 2px 10px rgba(59,130,246,0.12);
  color: var(--primary);
  transform: translateY(-1px);
}

/* 箭头 — CSS十字图标 */
.faq-arrow {
  flex-shrink: 0;
  margin-left: 20px;
  width: 22px;
  height: 22px;
  position: relative;
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
}
.faq-arrow::before,
.faq-arrow::after {
  content: '';
  position: absolute;
  background: #94a3b8;
  border-radius: 2px;
  transition: background 0.25s, transform 0.25s;
}
.faq-arrow::before { width: 14px; height: 2px; top: 10px; left: 4px; }
.faq-arrow::after  { width: 2px;  height: 14px; top: 4px; left: 10px; }

.faq-item.active .faq-arrow::before { background: var(--primary); }
.faq-item.active .faq-arrow::after  { transform: scaleY(0); }

/* 流畅展开 */
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s ease;
}
.faq-answer > div { overflow: hidden; }
.faq-answer p {
  padding: 0 28px 22px;
  color: var(--text-light);
  line-height: 1.8;
  font-size: 0.95rem;
}
.faq-item.active .faq-answer {
  grid-template-rows: 1fr;
}

/* =============================
   企业化 — 联系咨询
   ============================= */
.contact-section {
  background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 70%, var(--secondary) 30%));
  color: white;
}
.contact-section .section-title { color: white; }
.contact-section .section-title::after { background: rgba(255,255,255,0.5); }
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-info-item {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 1.1rem;
}
.contact-info-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.contact-desc {
  text-align: center;
  font-size: 1.1rem;
  opacity: 0.85;
  margin-bottom: 30px;
}
.contact-card {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-card h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

/* =============================
   企业化 — 痛点共鸣
   ============================= */
.pain-section { background: white; padding: 60px 0; }
.pain-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 750px;
  margin: 0 auto;
}
.pain-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-left: 5px solid #ef4444;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 22px 28px;
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.7;
  color: var(--text);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 16px;
}
.pain-card:hover {
  border-left-color: #dc2626;
  background: rgba(254, 226, 226, 0.5);
  transform: translateX(6px);
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.1);
}
.pain-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

/* =============================
   企业化 — 你将获得
   ============================= */
.benefits-section { background: linear-gradient(180deg, white, var(--bg)); }
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.benefit-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 24px 22px;
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius);
  box-shadow: 0 3px 14px rgba(0,0,0,0.05);
  transition: all var(--transition);
}
.benefit-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.06);
  border-color: color-mix(in srgb, #22c55e 25%, transparent);
}
.benefit-check {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: color-mix(in srgb, #22c55e 12%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.benefit-card h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--text);
}
.benefit-card p {
  color: var(--text-light);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* =============================
   企业化 — 成果口碑横幅
   ============================= */
.achievement-section { background: #fff; }
.achievement-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 750px;
  margin: 0 auto;
}
.achievement-card {
  background: #fff;
  border-left: 5px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 22px 28px;
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.7;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.achievement-card:hover {
  transform: translateX(6px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}
.achievement-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

/* =============================
   企业化 — 业务体系卡片
   ============================= */
.business-section { background: #fff; }
.business-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.business-card {
  padding: 24px 16px;
  text-align: center;
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  transition: all var(--transition);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  cursor: default;
}
.business-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  border-color: color-mix(in srgb, var(--primary) 25%, transparent);
  color: var(--primary);
}
.business-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
  display: block;
}

/* =============================
    页面布局
    ============================= */
.page-main {
  margin-top: 100px;
  margin-bottom: 60px;
}

/* =============================
   面包屑导航
    ============================= */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  font-size: 0.9rem;
  color: var(--text-light);
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition);
}

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

.breadcrumb-sep {
  color: #cbd5e1;
  font-size: 0.8rem;
}

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

/* =============================
   文章前后篇导航
    ============================= */
.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid #eef1f5;
}

.post-nav-item {
  flex: 1;
  text-decoration: none;
  padding: 16px 20px;
  background: #fff;
  border: 1px solid #f0f2f5;
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 48%;
}

.post-nav-item:hover {
  border-color: var(--primary);
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.post-nav-next {
  text-align: right;
  align-items: flex-end;
}

.post-nav-prev {
  align-items: flex-start;
}

.post-nav-label {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 600;
}

.post-nav-title {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1.5;
}

.post-nav-empty {
  visibility: hidden;
}

/* =============================
   底部推荐区块
    ============================= */
.related-section {
  padding: 80px 0;
  background: var(--bg);
}

/* =============================
    响应式
    ============================= */
@media (max-width: 768px) {
  .hero-title { font-size: 2.2rem; }
  .hero-subtitle { font-size: 1rem; }
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--blur-heavy);
    -webkit-backdrop-filter: var(--blur-heavy);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
  }
  .mobile-toggle { display: block; }
  .footer-content {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  .footer-links { gap: 20px; }
  .post-grid { grid-template-columns: 1fr; }
  .single-article, .single-page { padding: 24px; }
  .category-grid, .links-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 30px; }
  .about-image { order: -1; max-height: 300px; }
  .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .testimonial-card { padding: 24px; }
  .testimonial-arrow { display: none; }
  .stats-number { font-size: 2.2rem; }
  .courses-grid { grid-template-columns: 1fr; }
  .teachers-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-slogan { display: none; }
  .pain-card { font-size: 1rem; padding: 18px 20px; }
  .benefits-grid { grid-template-columns: 1fr; }
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .achievement-card { font-size: 1rem; padding: 18px 20px; }
  .page-main { margin-top: 80px; margin-bottom: 40px; }
  .post-nav { flex-direction: column; }
  .post-nav-item { max-width: 100%; }
  .post-nav-next { text-align: left; align-items: flex-start; }
  .related-section { padding: 50px 0; }
  .hero-subtitle.typewriter {
    white-space: normal;
    border-right: none;
    display: block;
    overflow: visible;
    animation: none;
    max-width: 100%;
  }
  .glass-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(255, 255, 255, 0.97);
    will-change: auto;
  }
  .hero-overlay {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    will-change: auto;
  }
  .glass-footer {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(255, 255, 255, 0.95);
    will-change: auto;
  }
  .btn-glass {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    will-change: auto;
  }
  .bg-blobs { opacity: 0.2; }
  .bg-blob { filter: blur(20px) !important; }
  .feature-card,
  .post-card,
  .course-card,
  .faq-question {
    box-shadow: 0 2px 8px rgba(0,0,0,0.04) !important;
  }
}

@media (hover: none) {
  .glass-card-glow:hover,
  .post-card:hover,
  .feature-card:hover,
  .course-card:hover,
  .category-card:hover,
  .link-card:hover,
  .business-card:hover,
  .benefit-card:hover {
    transform: none;
    box-shadow: none;
    border-color: inherit;
  }
  .teacher-card:hover .teacher-avatar { transform: none; }
  .article-content img:hover { transform: none; }
}

@media (max-width: 480px) {
  .breadcrumb { font-size: 0.8rem; }
  .hero-title { font-size: 1.6rem; }
  .hero { height: 60vh; min-height: 380px; }
  .section-title { font-size: 1.6rem; }
  section { padding: 50px 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .category-grid, .links-grid { grid-template-columns: 1fr; }
}