:root {
  --primary-color: #6c5ce7;
  --primary-light: #a29bfe;
  --primary-dark: #5541d7;
  --accent-color: #00cec9;
  --text-primary: #2d3436;
  --text-secondary: #636e72;
  --bg-primary: #f5f6fa;
  --bg-secondary: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-heading: 'Montserrat', 'PingFang SC', sans-serif;
  --font-body: 'Inter', 'SF Pro Text', -apple-system, sans-serif;
  --blur-bg: rgba(255, 255, 255, 0.8);
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
}

:root.dark-theme {
  --primary-color: #7d5ffd;
  --primary-light: #b4a0ff;
  --primary-dark: #4c2ce0;
  --accent-color: #00e6e1;
  --text-primary: #f5f6fa;
  --text-secondary: #a4b0be;
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'PingFang SC', 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  font-feature-settings: "kern" 1, "liga" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

#particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

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

.animated-text {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: float 3s ease-in-out infinite;
  will-change: transform;
}

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

.name-highlight {
  color: var(--primary-color);
  text-shadow: 0 0 10px rgba(108, 92, 231, 0.5);
}

.subtitle {
  font-size: 1.5rem;
  margin: 20px 0;
  color: var(--text-color);
  opacity: 0.8;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 2rem;
  position: relative;
  z-index: 10;
}

.link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1.5rem;
  color: var(--bg-secondary);
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: var(--transition-base);
  font-weight: 500;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.link i {
  font-size: 1.1rem;
}

.about-section,
.achievements-section,
.research-section {
  min-height: 100px;
  position: relative;
  z-index: 2;
  padding: 80px 20px;
  margin-bottom: 20px;
}

.research-section {
  padding-bottom: 100px;
}

main {
  position: relative;
  z-index: 2;
  background-color: var(--bg-color);
  padding-bottom: 40px;
  min-height: calc(100vh - 100px);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-content h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.about-content p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-color);
  opacity: 0.9;
}

/* 新增section样式 */
.achievements-section,
.research-section {
  padding: 80px 20px;
  background: var(--white);
  margin-top: -1px;
}

.section-content {
  max-width: 1200px;
  margin: 0 auto;
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 40px auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  width: 2px;
  height: 100%;
  background: var(--primary-color);
}

.timeline-item {
  padding: 20px 40px;
  position: relative;
  width: 50%;
  opacity: 1;
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-item::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-color);
  top: 30px;
}

.timeline-item:nth-child(odd)::before {
  right: -8px;
}

.timeline-item:nth-child(even)::before {
  left: -8px;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.research-item {
  background: var(--bg-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.research-item:hover {
  transform: translateY(-10px);
}

/* 修改滚动动画样式 */
[data-scroll] {
  opacity: 0;
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, opacity;
}

[data-scroll].fade-up {
  transform: translateY(50px);
}

[data-scroll].fade-down {
  transform: translateY(-50px);
}

[data-scroll].fade-left {
  transform: translateX(-50px);
}

[data-scroll].fade-right {
  transform: translateX(50px);
}

[data-scroll="in"] {
  opacity: 1;
  transform: translate(0, 0) !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .animated-text {
    font-size: 2.5rem;
  }
  
  .subtitle {
    font-size: 1.2rem;
  }
  
  .link {
    margin: 10px;
    padding: 8px 16px;
  }

  .timeline {
    max-width: 100%;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }

  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    left: 0;
    text-align: left;
  }

  .timeline-item::before {
    left: 12px;
  }
}

/* 添加打印样式 */
@media print {
  .hero {
    height: auto;
  }
  
  #particles {
    display: none;
  }
  
  .social-links {
    display: none;
  }
}

/* 添加footer样式 */
footer {
  position: relative;
  z-index: 2;
  background: var(--white);
  padding: 20px;
  text-align: center;
  border-top: 1px solid rgba(108, 92, 231, 0.1);
  margin-top: 20px;
  clear: both;
}

footer p {
  color: var(--text-color);
  opacity: 0.8;
}

/* 添加暗色模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1a1a1a;
    --text-color: #f5f6fa;
    --white: #2d2d2d;
  }

  .research-item {
    background: #2a2a2a;
  }

  .link {
    background: var(--secondary-color);
  }
}

/* 添加加载动画 */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-color);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.loading::after {
  content: '';
  width: 50px;
  height: 50px;
  border: 3px solid var(--primary-color);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 添加滚动到顶部按钮样式 */
.scroll-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 100;
}

.scroll-top.visible {
  opacity: 1;
}

/* 添加主题切换按钮样式 */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
  background: var(--primary-color);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  transform: rotate(180deg);
}

/* 添加技能进度条样式 */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.skill-item {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.skill-item h3 {
  color: var(--primary-color);
  margin-bottom: 20px;
  font-size: 1.3rem;
}

.skill-bar {
  margin-bottom: 15px;
}

.skill-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
  color: var(--text-color);
}

.skill-progress {
  height: 6px;
  background: var(--bg-primary);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.skill-progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: calc(100% * var(--progress));
  background: var(--gradient-primary);
  border-radius: 3px;
  animation: slideIn 1.5s var(--transition-smooth);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  background: var(--primary-color);
  color: var(--white);
  padding: 8px 15px;
  border-radius: 20px;
  font-size: 0.9rem;
  transition: transform 0.3s ease;
}

.skill-tag:hover {
  transform: translateY(-2px);
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

/* 添加项目卡片样式 */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.project-card {
  background: var(--white);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(108, 92, 231, 0.2);
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.project-content {
  padding: 20px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.project-tag {
  background: var(--bg-color);
  padding: 5px 10px;
  border-radius: 15px;
  font-size: 0.8em;
}

/* 添加悬浮提示样式 */
[data-tooltip] {
  position: relative;
}

[data-tooltip]:before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 10px;
  background: var(--text-color);
  color: var(--white);
  border-radius: 5px;
  font-size: 0.8em;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

[data-tooltip]:hover:before {
  opacity: 1;
  visibility: visible;
}

/* 修改暗色模式支持 */
.dark-theme .research-item {
  background: #2a2a2a;
}

.dark-theme .link {
  background: var(--secondary-color);
}

.dark-theme .skill-item,
.dark-theme .project-card {
  background: #2a2a2a;
}

.dark-theme .animated-text {
  text-shadow: 0 0 10px rgba(108, 92, 231, 0.3);
}

/* 添加微信悬浮提示样式 */
.wechat-link,
.qq-link {
  position: relative;
  transition: transform 0.3s ease;
}

.wechat-link:hover,
.qq-link:hover {
  transform: translateY(-3px);
}

/* 响应式调整 */
@media (max-width: 768px) {
  .social-links {
    gap: 10px;
  }
  
  .link {
    padding: 8px 16px;
    font-size: 0.8rem;
  }

  .wechat-link[data-tooltip]:before,
  .qq-link[data-tooltip]:before {
    top: -50px;
    font-size: 0.85rem;
    padding: 6px 12px;
  }

  .wechat-link[data-tooltip]:after,
  .qq-link[data-tooltip]:after {
    top: -20px;
  }

  .wechat-link[data-tooltip]:hover:before,
  .qq-link[data-tooltip]:hover:before {
    top: -60px;
  }

  .wechat-link[data-tooltip]:hover:after,
  .qq-link[data-tooltip]:hover:after {
    top: -30px;
  }
}

/* 确保动画样式正确应用 */
.timeline-item[data-scroll] {
  opacity: 0;
  transition: var(--transition-smooth);
  will-change: transform, opacity;
}

.timeline-item[data-scroll].fade-left {
  transform: translateX(-50px) scale(0.95);
}

.timeline-item[data-scroll].fade-right {
  transform: translateX(50px) scale(0.95);
}

.timeline-item[data-scroll="in"] {
  opacity: 1;
  transform: translate(0) scale(1) !important;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .timeline-item[data-scroll].fade-left,
  .timeline-item[data-scroll].fade-right {
    transform: translateY(50px);
  }
  
  .timeline-item[data-scroll="in"] {
    transform: translateY(0) !important;
  }
}

/* 添加平滑滚动 */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

/* 优化动画过渡 */
.hero .content {
  animation: fadeInUp 1s ease-out;
}

/* 优化粒子背景 */
#particles {
  filter: blur(0.5px);
  opacity: 0.8;
  transition: var(--transition-smooth);
}

/* 添加鼠标悬停效果 */
.hero:hover #particles {
  opacity: 1;
  filter: blur(0);
}

/* 添加新的动画关键帧 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 优化技能条动画 */
.skill-progress::after {
  animation: skillProgress 1.5s var(--transition-smooth);
  background: linear-gradient(90deg, 
    var(--primary-color),
    var(--accent-color),
    var(--primary-color)
  );
  background-size: 200% 100%;
  animation: skillProgress 1.5s var(--transition-smooth),
             gradientMove 3s linear infinite;
}

@keyframes gradientMove {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

@keyframes skillProgress {
  0% { width: 0; opacity: 0; }
  100% { width: calc(100% * var(--progress)); opacity: 1; }
}

/* 添加卡片悬停效果 */
.research-item {
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.research-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(108, 92, 231, 0.1));
  transform: translateX(-100%);
  transition: var(--transition-base);
}

.research-item:hover::before {
  transform: translateX(0);
}

/* 优化时间轴动画 */
.timeline-item {
  transition: var(--transition-smooth);
}

.timeline-item::before {
  transition: var(--transition-base);
  box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.2);
}

.timeline-item:hover::before {
  background: var(--accent-color);
  box-shadow: 0 0 0 8px rgba(108, 92, 231, 0.2);
}

/* 添加社交链接悬停效果 */
.link {
  position: relative;
  overflow: hidden;
}

.link::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 150%;
  height: 150%;
  background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 60%);
  transform: translate(-50%, -50%) scale(0);
  transition: transform 0.5s ease-out;
}

.link:hover::before {
  transform: translate(-50%, -50%) scale(1);
}

/* 优化滚动指示器样式 */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: fadeIn 0.8s ease-out forwards 1s;
}

.scroll-indicator::before {
  content: '向下滚动';
  color: var(--text-primary);
  font-size: 0.9rem;
  opacity: 0.8;
}

.scroll-indicator::after {
  content: '';
  width: 20px;
  height: 20px;
  border: 2px solid var(--primary-color);
  border-left: 0;
  border-top: 0;
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0) rotate(45deg);
  }
  40% {
    transform: translateY(-10px) rotate(45deg);
  }
  60% {
    transform: translateY(-5px) rotate(45deg);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, -20px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* 在移动端隐藏滚动指示器 */
@media (max-width: 768px) {
  .scroll-indicator {
    display: none;
  }
}

/* 当用户开始滚动时隐藏指示器 */
.scroll-started .scroll-indicator {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease-out;
}

/* 优化主题切换按钮 */
.theme-toggle {
  overflow: hidden;
  transition: var(--transition-base);
}

.theme-toggle::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--accent-color), transparent 70%);
  opacity: 0;
  transition: var(--transition-base);
}

.theme-toggle:hover::before {
  opacity: 1;
  transform: scale(1.2);
}

/* 添加毛玻璃效果卡片 */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* 3D翻转卡片效果 */
.flip-card {
  perspective: 1000px;
  height: 300px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.flip-card-back {
  transform: rotateY(180deg);
  background: var(--gradient-primary);
}

/* 大标题效果 */
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 2rem;
}

/* 数字展示板效果 */
.stats-board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin: 4rem 0;
}

.stat-item {
  text-align: center;
  padding: 2rem;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* 修改横向滚动展示区样式 */
.showcase-horizontal {
  position: relative;
  padding: 4rem 0;
  background: var(--bg-secondary);
  overflow: hidden;
}

.scroll-container {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
  margin: 0 auto;
  max-width: 95%;
  position: relative;
}

.scroll-container::-webkit-scrollbar {
  display: none;
}

.scroll-container:active {
  cursor: grabbing;
}

.scroll-item {
  flex: 0 0 180px;
  scroll-snap-align: start;
  opacity: 0.7;
  transform: scale(0.95);
  transition: all 0.3s ease;
}

.scroll-item.active {
  opacity: 1;
  transform: scale(1);
}

.showcase-card {
  padding: 1.2rem;
  height: 150px;
  background: var(--glass-bg);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.showcase-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(var(--primary-color-rgb), 0.1),
    transparent
  );
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.showcase-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.showcase-card:hover::before {
  transform: translateX(100%);
}

.card-icon {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.showcase-card h3 {
  font-size: 1rem;
  margin: 0;
  color: var(--primary-color);
}

.showcase-card p {
  font-size: 0.85rem;
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* 添加滚动指示箭头 */
.scroll-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background: var(--glass-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.8;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  z-index: 10;
}

.scroll-arrow:hover {
  opacity: 1;
  transform: translateY(-50%) scale(1.1);
}

.scroll-arrow.left {
  left: 20px;
}

.scroll-arrow.right {
  right: 20px;
}

.scroll-arrow::before {
  content: '';
  width: 10px;
  height: 10px;
  border: 2px solid var(--primary-color);
  border-left: 0;
  border-bottom: 0;
  transform: rotate(45deg);
}

.scroll-arrow.left::before {
  transform: rotate(-135deg);
}

/* 添加交错动画延迟 */
.scroll-item:nth-child(1) .showcase-card { animation-delay: 0.1s; }
.scroll-item:nth-child(2) .showcase-card { animation-delay: 0.2s; }
.scroll-item:nth-child(3) .showcase-card { animation-delay: 0.3s; }
.scroll-item:nth-child(4) .showcase-card { animation-delay: 0.4s; }

/* 优化现有卡片样式 */
.skill-item {
  transform: translateX(-50px);
  opacity: 0;
  animation: slideInRight 0.8s ease-out forwards;
}

@keyframes slideInRight {
  from {
    transform: translateX(-50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* 添加交错动画延迟 */
.skill-item:nth-child(1) { animation-delay: 0.2s; }
.skill-item:nth-child(2) { animation-delay: 0.4s; }
.skill-item:nth-child(3) { animation-delay: 0.6s; }

/* 优化翻转卡片布局 */
.flip-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.flip-card {
  perspective: 1000px;
  height: 220px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
  cursor: pointer;
}

.flip-card:hover .flip-card-inner {
  transform: rotateX(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.flip-card-front {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
}

.flip-card-back {
  background: var(--gradient-primary);
  transform: rotateX(180deg);
  color: white;
}

.flip-card-back ul {
  list-style: none;
  padding: 0;
  text-align: center;
}

.flip-card-back li {
  margin: 0.5rem 0;
  font-size: 0.9rem;
}

/* 添加技术标签样式 */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.tech-tag {
  background: rgba(var(--primary-color-rgb), 0.1);
  color: var(--primary-color);
  padding: 0.25rem 0.75rem;
  border-radius: 15px;
  font-size: 0.8rem;
}

/* 优化卡片内容布局 */
.flip-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.flip-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0.3rem 0;
}

.flip-card-back h3 {
  color: white;
}

/* 优化滚动容器 */
.scroll-container {
  padding: 1rem;
  gap: 1rem;
}

/* 激活状态样式 */
.scroll-item.active {
  opacity: 1;
  transform: scale(1);
}

/* 悬停效果 */
.scroll-item:hover {
  opacity: 1;
  transform: scale(1);
}

/* 移动端适配 */
@media (max-width: 768px) {
  .scroll-item {
    flex: 0 0 150px;
  }
  
  .showcase-card {
    height: 140px;
    padding: 1rem;
  }
}

/* 替换横向滚动为网格布局 */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.showcase-item {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.5s ease forwards;
}

.showcase-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transform: translateY(0);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, box-shadow;
}

.showcase-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.showcase-card h3 {
  font-size: 1.1rem;
  color: var(--primary-color);
  margin: 0;
}

.showcase-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

/* 添加交错动画延迟 */
.showcase-item:nth-child(1) { animation-delay: 0.1s; }
.showcase-item:nth-child(2) { animation-delay: 0.2s; }
.showcase-item:nth-child(3) { animation-delay: 0.3s; }
.showcase-item:nth-child(4) { animation-delay: 0.4s; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 移动端适配 */
@media (max-width: 768px) {
  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1rem;
  }
}