/* ==================== 变量定义 - 冷蓝月光 ==================== */
:root {
  /* 主色调 - 深邃夜空 */
  --color-bg-deep: #050510;
  --color-bg: #0a0a18;
  --color-bg-elevated: #0e0e1a;
  --color-bg-card: #12122a;
  
  /* 文字颜色 */
  --color-text-primary: #f0f4ff;
  --color-text-secondary: #8892b0;
  --color-text-muted: #5a6480;
  
  /* 光影色系 - 冷蓝月光 */
  --color-glow-moon: #64b5f6;
  --color-glow-moon-soft: rgba(100, 181, 246, 0.35);
  --color-glow-moon-subtle: rgba(100, 181, 246, 0.12);
  --color-glow-ice: #90caf9;
  --color-glow-star: #bbdefb;
  
  /* 强调色 */
  --color-accent: #64b5f6;
  --color-accent-hover: #90caf9;
  
  /* 边框 */
  --color-border: rgba(100, 181, 246, 0.1);
  --color-border-hover: rgba(100, 181, 246, 0.25);
  
  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Source Han Serif CN', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* 间距 */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* 动画时间 */
  --duration-fast: 0.25s;
  --duration-normal: 0.5s;
  --duration-slow: 1s;
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

/* ==================== 重置样式 ==================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

/* ==================== 背景光影效果 - 月光层叠 ==================== */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  animation: moonPulse 8s ease-in-out infinite;
}

.glow-1 {
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--color-glow-moon-soft) 0%, transparent 70%);
  top: -300px;
  right: -200px;
  animation: moonFloat 25s ease-in-out infinite, moonPulse 12s ease-in-out infinite;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(100, 181, 246, 0.15) 0%, transparent 70%);
  bottom: -200px;
  left: -150px;
  animation: moonFloat 30s ease-in-out infinite reverse, moonPulse 15s ease-in-out infinite;
}

.glow-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(144, 202, 249, 0.1) 0%, transparent 70%);
  top: 40%;
  left: 30%;
  animation: moonFloat 20s ease-in-out infinite, moonPulse 10s ease-in-out infinite;
}

/* 星光粒子效果 */
.glow::before {
  content: '';
  position: absolute;
  width: 4px;
  height: 4px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-glow-moon), 0 0 20px var(--color-glow-moon);
  animation: twinkle 3s ease-in-out infinite;
}

.glow-1::before { top: 20%; left: 30%; animation-delay: 0s; }
.glow-2::before { bottom: 30%; right: 25%; animation-delay: 1s; }
.glow-3::before { top: 50%; left: 50%; animation-delay: 2s; }

@keyframes moonFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(40px, -30px) scale(1.05); }
  50% { transform: translate(20px, 40px) scale(0.95); }
  75% { transform: translate(-30px, 20px) scale(1.02); }
}

@keyframes moonPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.9; }
}

@keyframes twinkle {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.5); }
}

/* ==================== 导航栏 ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-lg) var(--space-xl);
  transition: background-color var(--duration-normal) ease,
              backdrop-filter var(--duration-normal) ease,
              transform var(--duration-normal) ease;
}

.navbar.scrolled {
  background-color: rgba(10, 10, 24, 0.85);
  backdrop-filter: blur(25px);
  border-bottom: 1px solid var(--color-border);
  transform: translateY(0);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-glow-moon) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  padding: var(--space-sm) 0;
  transition: all var(--duration-fast) ease;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-glow-moon);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--duration-normal) ease;
  box-shadow: 0 0 10px var(--color-glow-moon-soft);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-primary);
  text-shadow: 0 0 20px var(--color-glow-moon-soft);
}

.nav-link.active::before,
.nav-link:hover::before {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--duration-fast) ease;
  border-radius: 2px;
}

/* ==================== 主内容区域 ==================== */
.main-content {
  position: relative;
  z-index: 1;
}

.page {
  display: none;
  min-height: 100vh;
}

.page.active {
  display: block;
  animation: moonRise 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes moonRise {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== Hero 区域 ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-3xl) var(--space-xl);
  position: relative;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3xl);
  max-width: 1200px;
  width: 100%;
}

.hero-text {
  flex: 1;
  max-width: 600px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
}

.hero-title .line {
  display: block;
  opacity: 0;
  transform: translateY(40px) skewY(5deg);
  animation: lineReveal 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-title .line-1 {
  animation-delay: 0.3s;
}

.hero-title .line-2 {
  animation-delay: 0.6s;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-glow-moon) 30%, var(--color-glow-ice) 50%, var(--color-glow-moon) 70%, var(--color-text-primary) 100%);
  background-size: 300% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: lineReveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.6s forwards, moonShimmer 4s ease-in-out infinite;
}

@keyframes lineReveal {
  to {
    opacity: 1;
    transform: translateY(0) skewY(0);
  }
}

@keyframes moonShimmer {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 300% center; }
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.15em;
  opacity: 0;
  animation: fadeSlide 0.8s ease-out 0.9s forwards;
}

@keyframes fadeSlide {
  to {
    opacity: 1;
    transform: translateX(0);
  }
  from {
    transform: translateX(-20px);
  }
}

.hero-visual {
  position: relative;
  width: 400px;
  height: 400px;
  opacity: 0;
  animation: floatIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: scale(0.8) rotate(-10deg);
  }
  to {
    opacity: 1;
    transform: scale(1) rotate(0);
  }
}

.floating-card {
  position: absolute;
  background: linear-gradient(145deg, var(--color-bg-elevated) 0%, var(--color-bg-card) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.4),
    0 0 80px var(--color-glow-moon-subtle),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}

.floating-card:hover {
  transform: translateY(-10px) scale(1.05);
  box-shadow: 
    0 35px 70px rgba(0, 0, 0, 0.5),
    0 0 120px var(--color-glow-moon-soft),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border-color: var(--color-glow-moon);
}

.card-inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.card-icon {
  font-size: 1.5rem;
  color: var(--color-glow-moon);
  animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
  0%, 100% { text-shadow: 0 0 10px var(--color-glow-moon-soft); }
  50% { text-shadow: 0 0 25px var(--color-glow-moon); }
}

.card-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.card-1 {
  top: 15%;
  left: 5%;
  transform: rotate(-10deg);
  animation: moonCardFloat 7s ease-in-out infinite;
}

.card-2 {
  top: 40%;
  right: 0;
  transform: rotate(7deg);
  animation: moonCardFloat 8s ease-in-out infinite 0.5s;
}

.card-3 {
  bottom: 12%;
  left: 20%;
  transform: rotate(-5deg);
  animation: moonCardFloat 9s ease-in-out infinite 1s;
}

@keyframes moonCardFloat {
  0%, 100% { transform: translateY(0) rotate(var(--rotate, 0deg)); }
  50% { transform: translateY(-25px) rotate(var(--rotate, 0deg)); }
}

.card-1 { --rotate: -10deg; }
.card-2 { --rotate: 7deg; }
.card-3 { --rotate: -5deg; }

.scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0;
  animation: fadeIn 1s ease-out 1.5s forwards;
}

.scroll-text {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.25em;
}

.scroll-line {
  width: 1px;
  height: 80px;
  background: linear-gradient(180deg, var(--color-glow-moon), transparent);
  animation: scrollPulse 2.5s ease-in-out infinite;
  box-shadow: 0 0 15px var(--color-glow-moon-soft);
}

@keyframes scrollPulse {
  0%, 100% { 
    opacity: 0.3; 
    transform: scaleY(1) translateY(0);
    box-shadow: 0 0 15px var(--color-glow-moon-soft);
  }
  50% { 
    opacity: 1; 
    transform: scaleY(0.7) translateY(10px);
    box-shadow: 0 0 30px var(--color-glow-moon);
  }
}

/* ==================== 文章区域 ==================== */
.articles-section,
.featured-section {
  padding: var(--space-3xl) var(--space-xl);
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.title-deco {
  color: var(--color-glow-moon);
  font-size: 1rem;
  animation: iconPulse 3s ease-in-out infinite;
}

.section-more {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) ease;
  position: relative;
}

.section-more::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-glow-moon);
  transition: width var(--duration-normal) ease;
}

.section-more:hover {
  color: var(--color-glow-moon);
  text-shadow: 0 0 20px var(--color-glow-moon-soft);
}

.section-more:hover::after {
  width: 100%;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--space-xl);
}

.article-card {
  background: linear-gradient(145deg, var(--color-bg-elevated) 0%, var(--color-bg-card) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  cursor: pointer;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-glow-moon), transparent);
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
  box-shadow: 0 0 20px var(--color-glow-moon-soft);
}

.article-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, var(--color-glow-moon-subtle), transparent 50%);
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
}

.article-card:hover {
  transform: translateY(-12px) scale(1.02);
  border-color: var(--color-border-hover);
  box-shadow: 
    0 30px 60px rgba(0, 0, 0, 0.4),
    0 0 60px var(--color-glow-moon-subtle);
}

.article-card:hover::before {
  opacity: 1;
}

.article-card:hover::after {
  opacity: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  position: relative;
  z-index: 1;
}

.article-category {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-glow-moon);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.article-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.article-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
  transition: all var(--duration-fast) ease;
  position: relative;
  z-index: 1;
}

.article-card:hover .article-card-title {
  color: var(--color-glow-moon);
  text-shadow: 0 0 30px var(--color-glow-moon-soft);
}

.article-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  position: relative;
  z-index: 1;
}

.tag {
  font-size: 0.75rem;
  padding: var(--space-xs) var(--space-sm);
  background: rgba(100, 181, 246, 0.1);
  border: 1px solid rgba(100, 181, 246, 0.2);
  border-radius: var(--radius-sm);
  color: var(--color-glow-moon);
  transition: all var(--duration-fast) ease;
}

.article-card:hover .tag {
  background: rgba(100, 181, 246, 0.2);
  border-color: var(--color-glow-moon);
}

/* ==================== 推荐列表 ==================== */
.featured-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.featured-item {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-lg);
  background: linear-gradient(145deg, var(--color-bg-elevated), var(--color-bg-card));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.featured-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-glow-moon);
  transform: scaleY(0);
  transition: transform var(--duration-normal) ease;
  box-shadow: 0 0 15px var(--color-glow-moon);
}

.featured-item:hover {
  background: var(--color-bg-card);
  border-color: var(--color-border-hover);
  transform: translateX(15px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), 0 0 40px var(--color-glow-moon-subtle);
}

.featured-item:hover::before {
  transform: scaleY(1);
}

.featured-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-glow-moon);
  opacity: 0.4;
  min-width: 70px;
  transition: all var(--duration-normal) ease;
  text-shadow: 0 0 20px var(--color-glow-moon-soft);
}

.featured-item:hover .featured-number {
  opacity: 1;
  text-shadow: 0 0 40px var(--color-glow-moon);
}

.featured-content {
  flex: 1;
}

.featured-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  transition: color var(--duration-fast) ease;
}

.featured-item:hover .featured-title {
  color: var(--color-glow-moon);
}

.featured-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.featured-arrow {
  color: var(--color-text-muted);
  font-size: 1.5rem;
  transition: all var(--duration-fast) ease;
}

.featured-item:hover .featured-arrow {
  transform: translateX(10px);
  color: var(--color-glow-moon);
  text-shadow: 0 0 20px var(--color-glow-moon);
}

/* ==================== 归档页 ==================== */
.archive-header {
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
}

.archive-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-text-primary), var(--color-glow-moon));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.archive-subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.archive-timeline {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-xl) var(--space-3xl);
}

.archive-year {
  margin-bottom: var(--space-2xl);
}

.archive-year-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-glow-moon);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.archive-year-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-glow-moon-soft), transparent);
}

.archive-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.archive-item {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: linear-gradient(145deg, var(--color-bg-elevated), var(--color-bg-card));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.archive-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-glow-moon);
  transform: scaleY(0);
  transition: transform var(--duration-normal) ease;
}

.archive-item:hover {
  background: var(--color-bg-card);
  border-color: var(--color-border-hover);
  transform: translateX(15px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), 0 0 40px var(--color-glow-moon-subtle);
}

.archive-item:hover::before {
  transform: scaleY(1);
}

.archive-date {
  font-size: 0.85rem;
  color: var(--color-glow-moon);
  min-width: 80px;
  font-weight: 500;
}

.archive-title-text {
  flex: 1;
  font-weight: 500;
  transition: color var(--duration-fast) ease;
}

.archive-item:hover .archive-title-text {
  color: var(--color-glow-moon);
}

.archive-category {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(100, 181, 246, 0.1);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) ease;
}

.archive-item:hover .archive-category {
  background: rgba(100, 181, 246, 0.2);
  color: var(--color-glow-moon);
}

/* ==================== 关于页 ==================== */
.about-container {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

.about-hero {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--color-border);
}

.about-avatar {
  position: relative;
  width: 120px;
  height: 120px;
}

.avatar-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--color-glow-moon);
  animation: moonOrbit 15s linear infinite;
  box-shadow: 0 0 30px var(--color-glow-moon-soft);
}

.avatar-ring::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 50%;
  width: 10px;
  height: 10px;
  background: var(--color-glow-moon);
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 20px var(--color-glow-moon);
}

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

.avatar-inner {
  position: absolute;
  inset: 12px;
  background: linear-gradient(145deg, var(--color-bg-elevated), var(--color-bg-card));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-glow-moon);
  text-shadow: 0 0 30px var(--color-glow-moon);
}

.about-intro {
  flex: 1;
}

.about-name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.about-tagline {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.about-section {
  background: linear-gradient(145deg, var(--color-bg-elevated), var(--color-bg-card));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all 0.5s ease;
}

.about-section:hover {
  border-color: var(--color-border-hover);
  box-shadow: 0 0 50px var(--color-glow-moon-subtle);
}

.about-section-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-glow-moon);
}

.about-section-title::before {
  content: '◈';
  font-size: 0.8rem;
}

.about-text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-md);
}

.skill-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-item:hover {
  border-color: var(--color-glow-moon);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 30px var(--color-glow-moon-subtle);
}

.skill-icon {
  font-size: 1.2rem;
  color: var(--color-glow-moon);
}

.skill-name {
  font-size: 0.9rem;
  font-weight: 500;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-item:hover {
  border-color: var(--color-glow-moon);
  transform: translateX(15px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 30px var(--color-glow-moon-subtle);
}

.contact-icon {
  font-size: 1rem;
  color: var(--color-glow-moon);
}

/* ==================== 文章详情页 ==================== */
.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

.article-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.article-category {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-glow-moon);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.article-header .article-date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.article-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-lg);
}

.article-excerpt {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

.article-cover {
  margin: var(--space-2xl) 0;
  height: 350px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.cover-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    rgba(100, 181, 246, 0.4) 0%, 
    rgba(144, 202, 249, 0.3) 50%, 
    rgba(187, 222, 251, 0.2) 100%);
  animation: moonGradientShift 8s ease-in-out infinite;
}

@keyframes moonGradientShift {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.article-body {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

.article-body p {
  margin-bottom: var(--space-lg);
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: var(--space-2xl) 0 var(--space-lg);
}

.article-body h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: var(--space-xl) 0 var(--space-md);
}

.article-body ul,
.article-body ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.article-body li {
  margin-bottom: var(--space-sm);
}

.article-body blockquote {
  border-left: 3px solid var(--color-glow-moon);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  font-style: italic;
  color: var(--color-text-muted);
  background: rgba(100, 181, 246, 0.05);
  padding: var(--space-lg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-body code {
  font-family: 'Fira Code', monospace;
  font-size: 0.9em;
  padding: 2px 8px;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  color: var(--color-glow-moon);
}

.article-body pre {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin: var(--space-xl) 0;
  overflow-x: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.article-body pre code {
  padding: 0;
  background: none;
}

.article-footer {
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.article-footer .article-tags {
  margin-bottom: var(--space-xl);
}

.article-nav {
  display: flex;
  justify-content: center;
}

.nav-prev {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-prev:hover {
  border-color: var(--color-glow-moon);
  background: var(--color-bg-card);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 30px var(--color-glow-moon-subtle);
}

/* ==================== 页脚 ==================== */
.footer {
  position: relative;
  z-index: 1;
  padding: var(--space-3xl) var(--space-xl);
  border-top: 1px solid var(--color-border);
  background: linear-gradient(180deg, transparent, rgba(10, 10, 24, 0.8));
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
}

.footer-link {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) ease;
}

.footer-link:hover {
  color: var(--color-glow-moon);
  text-shadow: 0 0 20px var(--color-glow-moon-soft);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ==================== 浮动装饰 ==================== */
.floating-deco {
  position: fixed;
  font-size: 2.5rem;
  color: var(--color-glow-moon);
  opacity: 0.08;
  pointer-events: none;
  z-index: 0;
  animation: decoFloat 20s ease-in-out infinite;
}

.deco-1 {
  top: 15%;
  right: 8%;
  animation-delay: 0s;
}

.deco-2 {
  bottom: 25%;
  left: 3%;
  animation-delay: 3s;
}

.deco-3 {
  top: 55%;
  right: 4%;
  animation-delay: 6s;
}

@keyframes decoFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.08; }
  25% { transform: translateY(-40px) rotate(90deg); opacity: 0.15; }
  50% { transform: translateY(-20px) rotate(180deg); opacity: 0.08; }
  75% { transform: translateY(-50px) rotate(270deg); opacity: 0.12; }
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-visual {
    margin-top: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(5, 5, 16, 0.95);
    backdrop-filter: blur(25px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-2xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) ease;
  }
  
  .nav-links.active {
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    font-size: 1.5rem;
  }
  
  .nav-toggle {
    display: flex;
    z-index: 101;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-visual {
    width: 300px;
    height: 300px;
  }
  
  .floating-card {
    padding: var(--space-md);
  }
  
  .card-1 { top: 8%; left: 0; }
  .card-2 { top: 42%; right: -5%; }
  .card-3 { bottom: 8%; left: 10%; }
  
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .about-hero {
    flex-direction: column;
    text-align: center;
  }
  
  .featured-item {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }
  
  .featured-number {
    min-width: auto;
  }
  
  .archive-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}

@media (max-width: 480px) {
  :root {
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 3rem;
  }
  
  .hero {
    padding: var(--space-2xl) var(--space-md);
  }
  
  .hero-visual {
    width: 260px;
    height: 260px;
  }
  
  .card-text {
    font-size: 0.85rem;
  }
  
  .section-title {
    font-size: 1.25rem;
  }
  
  .article-card {
    padding: var(--space-lg);
  }
}

/* ==================== 加载动画 ==================== */
.page-loading {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: opacity 0.8s ease;
}

.page-loading.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-glow-moon);
  border-radius: 50%;
  animation: moonSpin 1.5s linear infinite;
  box-shadow: 0 0 30px var(--color-glow-moon-soft);
}

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

/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-bg-card);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-glow-moon);
  box-shadow: 0 0 10px var(--color-glow-moon-soft);
}

/* ==================== 选中文字样式 ==================== */
::selection {
  background: rgba(100, 181, 246, 0.3);
  color: var(--color-text-primary);
}

/* ==================== 焦点样式 ==================== */
:focus-visible {
  outline: 2px solid var(--color-glow-moon);
  outline-offset: 3px;
  box-shadow: 0 0 20px var(--color-glow-moon-soft);
}

/* ==================== 额外动效增强 ==================== */
/* 页面切换时的闪烁效果 */
.page {
  position: relative;
}

.page::after {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--color-glow-moon);
  opacity: 0;
  pointer-events: none;
  z-index: 999;
}

.page.transitioning::after {
  animation: pageFlash 0.3s ease-out;
}

@keyframes pageFlash {
  0% { opacity: 0.3; }
  100% { opacity: 0; }
}

/* 鼠标跟随光效 */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--color-glow-moon-subtle), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  opacity: 0;
}

body:hover .cursor-glow {
  opacity: 1;
}

/* 卡片3D效果 */
.article-card {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.article-card:active {
  transform: translateY(-12px) scale(1.02) rotateX(5deg);
}