:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #ec4899;
  --accent-color: #06b6d4;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  gap: 2rem;
  padding: 2rem;
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 3px;
  transition: background 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* 侧边栏 */
.sidebar {
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

.profile-card, .site-info-card {
  background: var(--bg-primary);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.profile-header {
  text-align: center;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--primary-color);
  box-shadow: var(--shadow-md);
}

.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-name {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.profile-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.nav-list {
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.nav-link:hover, .nav-link.active {
  background: var(--gradient-primary);
  color: white;
  transform: translateX(4px);
}

.nav-link .iconfont {
  margin-right: 0.75rem;
  font-size: 1.1rem;
}

/* 主内容区 */
.main-content {
  flex: 1;
  background: var(--bg-primary);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

/* 英雄区域 */
.hero-section {
  position: relative;
  height: 400px;
  overflow: hidden;
}

.hero-image {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  z-index: 2;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  line-height: 1.2;
}

.hero-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.author-line {
  width: 60px;
  height: 3px;
  background: white;
  border-radius: 2px;
}

.author-name {
  font-size: 1.25rem;
  font-weight: 500;
}

/* 主导航 */
.main-nav {
  background: var(--bg-secondary);
  padding: 0 2rem;
  border-bottom: 1px solid var(--border-color);
}

.main-nav-list {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}

.main-nav-link {
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px 8px 0 0;
  transition: all 0.3s ease;
  font-weight: 500;
  position: relative;
}

.main-nav-link:hover, .main-nav-link.active {
  color: var(--primary-color);
  background: var(--bg-primary);
}

.main-nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px 2px 0 0;
}

.main-nav-link .iconfont {
  margin-right: 0.5rem;
  font-size: 1.1rem;
}

/* 内容区域 */
.content-area {
  padding: 2rem;
  min-height: 600px;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

/* 底部 */
.footer {
  background: var(--bg-tertiary);
  padding: 2rem;
  text-align: center;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  body {
    flex-direction: column;
    padding: 1rem;
    gap: 1rem;
  }
  
  .sidebar {
    width: 100%;
    flex-direction: row;
    position: static;
  }
  
  .profile-card, .site-info-card {
    flex: 1;
  }
  
  .hero-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .sidebar {
    flex-direction: column;
  }
  
  .main-nav-list {
    flex-wrap: wrap;
  }
  
  .hero-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }
  
  .content-area {
    padding: 1rem;
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.profile-card, .site-info-card, .main-content {
  animation: fadeInUp 0.6s ease-out;
}

.profile-card {
  animation-delay: 0.1s;
}

.site-info-card {
  animation-delay: 0.2s;
}

.main-content {
  animation-delay: 0.3s;
}