/* 
  ============================================================
  Joshua's Page - Universal Stylesheet (Theme: Tranquil Midnight Pro)
  Enhanced UI with glassmorphism, refined shadows, and elegant interactions
  ============================================================
*/

:root {
  /* --- 精致色彩系统 (Refined Tranquil Midnight) --- */
  --bg: #0A0E14;
  --bg-gradient: linear-gradient(135deg, #0A0E14 0%, #0D1117 50%, #0F1419 100%);
  --surface: rgba(22, 27, 34, 0.6);
  --surface-solid: #161B22;
  --panel: rgba(31, 36, 44, 0.5);
  --panel-solid: #1F242C;

  --accent-primary: #58A6FF;
  --accent-primary-rgb: 88, 166, 255;
  --accent-secondary: #79C0FF;
  --accent-tertiary: #A5D6FF;

  --text-main: #E6EDF3;
  --text-secondary: #C9D1D9;
  --text-muted: #8B949E;
  --text-subtle: #6E7681;

  --border: rgba(201, 209, 217, 0.12);
  --border-subtle: rgba(201, 209, 217, 0.06);
  --border-bright: rgba(201, 209, 217, 0.2);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.4);
  
  --glow-primary: rgba(88, 166, 255, 0.2);
  --glow-accent: rgba(121, 192, 255, 0.15);

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 22px;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  color-scheme: dark;
  font-family: "Inter var", Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ============================================================
   基础和背景设置
   ============================================================ */
   
* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  padding: 0;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  position: relative;
  background: var(--bg-gradient);
  background-attachment: fixed;
}

.bg {
  position: fixed;
  inset: -20vh -10vw -20vh -10vw;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1200px 700px at 75% -15%, var(--glow-primary), transparent 65%),
    radial-gradient(1000px 600px at -15% 115%, var(--glow-accent), transparent 70%),
    radial-gradient(800px 500px at 50% 50%, rgba(139, 148, 158, 0.03), transparent 80%);
  mask-image: radial-gradient(ellipse 160% 130% at 50% 45%, rgba(0,0,0,1), rgba(0,0,0,0.85) 65%, rgba(0,0,0,0.3) 100%);
  -webkit-mask-image: radial-gradient(ellipse 160% 130% at 50% 45%, rgba(0,0,0,1), rgba(0,0,0,0.85) 65%, rgba(0,0,0,0.3) 100%);
  animation: bgPulse 20s ease-in-out infinite;
}

@keyframes bgPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

/* ============================================================
   布局容器
   ============================================================ */

.wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(32px, 6vh, 64px) clamp(20px, 4vw, 40px);
  position: relative;
  z-index: 1;
}

/* ============================================================
   卡片系统 - 玻璃态设计
   ============================================================ */

.card {
  width: 100%;
  max-width: 1080px;
  border-radius: var(--radius-xl);
  padding: clamp(32px, 5vw, 52px);
  background: var(--surface);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 
    var(--shadow-xl),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
  isolation: isolate;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.1) 20%, 
    rgba(255, 255, 255, 0.1) 80%, 
    transparent 100%);
  pointer-events: none;
}

.card.card-single-column {
  max-width: 860px;
}

/* ============================================================
   主页 Header
   ============================================================ */

header {
  display: flex;
  gap: 24px;
  align-items: center;
  margin-bottom: 36px;
  position: relative;
}

.avatar {
  width: 92px;
  height: 92px;
  flex: 0 0 92px;
  border-radius: var(--radius-xl);
  border: 2px solid rgba(200, 215, 255, 0.25);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 12px 32px rgba(88, 166, 255, 0.3),
    0 0 0 6px rgba(88, 166, 255, 0.08);
  object-fit: cover;
  background: var(--surface-solid);
  transition: all var(--transition-base);
  position: relative;
}

.avatar::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-xl);
  padding: 2px;
  background: linear-gradient(135deg, 
    rgba(88, 166, 255, 0.4), 
    rgba(121, 192, 255, 0.2),
    transparent 50%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.avatar:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.1) inset,
    0 16px 40px rgba(88, 166, 255, 0.4),
    0 0 0 8px rgba(88, 166, 255, 0.12);
}

.avatar:hover::after {
  opacity: 1;
}

.title {
  line-height: 1.3;
  flex: 1;
}

.title h1 {
  margin: 0;
  font-size: clamp(28px, 3vw, 36px);
  letter-spacing: -0.03em;
  font-weight: 700;
  background: linear-gradient(135deg, 
    #FFFFFF 0%, 
    #E6EDF3 30%, 
    #C9D1D9 60%, 
    #A8B4C6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
  display: inline-block;
}

.title h1::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transition: width var(--transition-slow);
}

header:hover .title h1::after {
  width: 100%;
}

.title p {
  margin: 10px 0 0;
  color: var(--text-muted);
  font-size: clamp(14px, 1.4vw, 16px);
  font-weight: 400;
}

nav.actions {
  margin-left: auto;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

/* ============================================================
   按钮系统
   ============================================================ */

.btn {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  color: var(--text-main);
  transition: all var(--transition-base);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.1), 
    transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn:hover::before {
  opacity: 1;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--border-bright);
  background: var(--surface-solid);
  box-shadow: 
    var(--shadow-md),
    0 0 0 4px rgba(88, 166, 255, 0.05);
}

.btn:active {
  transform: translateY(0);
}

.btn.primary {
  background: linear-gradient(135deg, 
    var(--accent-primary) 0%, 
    var(--accent-secondary) 100%);
  color: #FFFFFF;
  font-weight: 600;
  border: none;
  box-shadow: 
    0 8px 24px var(--glow-primary),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn.primary::before {
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.2), 
    transparent 60%);
}

.btn.primary:hover {
  filter: brightness(1.1);
  box-shadow: 
    0 12px 32px var(--glow-primary),
    0 0 0 6px rgba(88, 166, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* ============================================================
   主页 Main 布局 (旧版，用于非主页)
   ============================================================ */

main {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  align-items: start;
}

.lead {
  background: transparent;
  border: none;
  padding: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 72ch;
  box-shadow: none;
}

.lead h2 {
  margin: 0 0 16px 0;
  font-size: clamp(22px, 2.2vw, 28px);
  color: var(--text-main);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.grid {
  margin-top: 28px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.chip {
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.chip::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    rgba(88, 166, 255, 0.1), 
    transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.chip:hover::before {
  opacity: 1;
}

.chip:hover {
  color: var(--text-main);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  background: var(--surface-solid);
  box-shadow: 
    var(--shadow-sm),
    0 0 0 3px rgba(88, 166, 255, 0.08);
}

/* ============================================================
   右侧面板 (旧版)
   ============================================================ */

aside.card-right {
  position: relative;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

aside.card-right:hover {
  border-color: var(--border-bright);
  box-shadow: 
    var(--shadow-lg),
    0 0 0 4px rgba(88, 166, 255, 0.04);
}

aside.card-right h3 {
  margin: 0 0 16px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 12px;
}

.link-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 15px;
  line-height: 1.6;
  padding: 8px 0;
  transition: padding-left var(--transition-base);
}

.link-row:hover {
  padding-left: 4px;
}

.link-row strong {
  color: var(--text-secondary);
  font-weight: 600;
}

.link-row a {
  color: var(--accent-primary);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
}

.link-row a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transition: width var(--transition-base);
}

.link-row a:hover {
  color: var(--accent-secondary);
}

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

.social {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--surface-solid);
  color: var(--text-muted);
  font-size: 16px;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.icon::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    rgba(88, 166, 255, 0.15), 
    transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.icon:hover::before {
  opacity: 1;
}

.icon:hover {
  transform: translateY(-3px) scale(1.05);
  color: var(--accent-secondary);
  border-color: var(--accent-primary);
  box-shadow: 
    var(--shadow-md),
    0 0 0 4px rgba(88, 166, 255, 0.1);
  background: var(--panel-solid);
}

.icon svg {
  transition: transform var(--transition-base);
}

.icon:hover svg {
  transform: scale(1.1);
}

footer {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  color: var(--text-subtle);
  font-size: 13px;
}

/* ============================================================
   Canvas Demo - 终极圆角修复
   ============================================================ */

.canvas-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  /* 硬件加速 */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: transform;
}

.demo {
  margin-top: 28px;
  background: var(--panel);
  backdrop-filter: blur(10px);
  height: clamp(180px, 30vh, 260px);
  display: block;
  border: 1px solid var(--border);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
  position: relative;
  /* 移除 border-radius，由外层容器控制 */
  border-radius: 0;
  overflow: hidden;
}

.demo::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, 
    rgba(88, 166, 255, 0.05), 
    transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* Canvas 元素样式 */
.demo canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  /* 禁止任何溢出 */
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* ============================================================
   辅助样式
   ============================================================ */

.muted-small {
  color: var(--text-subtle);
  font-size: 13px;
  font-weight: 500;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--glow-primary);
  outline-offset: 4px;
  border-radius: var(--radius-md);
}

/* ============================================================
   文章列表页样式
   ============================================================ */

.page-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 28px;
  margin-bottom: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.page-header h1 {
  margin: 0;
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, 
    #FFFFFF 0%, 
    #E6EDF3 40%, 
    #C9D1D9 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-header p {
  margin: 6px 0 0;
  color: var(--text-secondary);
  max-width: 65ch;
  line-height: 1.6;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.post-entry {
  display: block;
  text-decoration: none;
  padding: 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.post-entry::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
  transition: height var(--transition-slow);
}

.post-entry:hover::before {
  height: 100%;
}

.post-entry:hover {
  transform: translateY(-4px) translateX(4px);
  border-color: var(--accent-primary);
  background: var(--surface-solid);
  box-shadow: 
    var(--shadow-lg),
    0 0 0 4px rgba(88, 166, 255, 0.08);
}

.post-entry h2 {
  margin: 0 0 10px;
  font-size: clamp(19px, 2vw, 23px);
  color: var(--text-main);
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: color var(--transition-fast);
}

.post-entry:hover h2 {
  color: var(--accent-secondary);
}

.post-entry .post-meta {
  margin: 0;
  font-size: 14px;
  color: var(--text-subtle);
  font-weight: 500;
}

/* ============================================================
   文章详情页样式
   ============================================================ */

.post-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 32px;
  margin-bottom: 40px;
}

.post-header h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, 
    #FFFFFF 0%, 
    #E6EDF3 30%, 
    #C9D1D9 70%, 
    #A8B4C6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  max-width: 20ch;
}

.post-header .post-meta {
  font-size: 14px;
  color: var(--text-subtle);
  font-weight: 500;
}

.post-content {
  line-height: 1.85;
  font-size: 18px;
  color: var(--text-secondary);
}

.post-content h2 {
  font-size: clamp(24px, 2.6vw, 30px);
  color: var(--text-main);
  margin: 64px 0 24px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  position: relative;
}

.post-content h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.post-content h3 {
  font-size: clamp(20px, 2.2vw, 25px);
  color: var(--text-main);
  margin: 48px 0 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.post-content p {
  margin: 0 0 1.4em;
}

.post-content a {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.post-content a:hover {
  color: var(--accent-secondary);
  border-bottom-color: var(--accent-secondary);
}

.post-content ul,
.post-content ol {
  padding-left: 32px;
  margin: 1.2em 0;
}

.post-content li {
  margin-bottom: 0.8em;
}

.post-content strong {
  color: var(--text-main);
  font-weight: 600;
}

.post-content blockquote {
  margin: 2.5em 0;
  padding: 20px 28px;
  border-left: 4px solid var(--accent-primary);
  background: var(--panel);
  backdrop-filter: blur(10px);
  color: var(--text-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.post-content code {
  font-family: 'SFMono-Regular', 'SF Mono', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
  background: var(--panel-solid);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.88em;
  border: 1px solid var(--border);
  color: var(--accent-tertiary);
  font-weight: 500;
}

.post-content pre {
  background: var(--panel-solid);
  padding: 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  border: 1px solid var(--border);
  font-size: 14px;
  line-height: 1.7;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.15);
}

.post-content pre code {
  background: none;
  padding: 0;
  border: none;
  color: var(--text-secondary);
}

.post-footer {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  text-align: center;
}

/* ============================================================
   标签系统
   ============================================================ */

.post-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.post-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--panel);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.post-tag::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    rgba(88, 166, 255, 0.1), 
    transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.post-tag span::before {
  content: '# ';
  opacity: 0.5;
  margin-right: 2px;
}

.post-tag span {
  position: relative;
  z-index: 1;
}

.post-tag:hover {
  color: var(--text-main);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  background: var(--surface-solid);
  box-shadow: 
    var(--shadow-sm),
    0 0 0 3px rgba(88, 166, 255, 0.08),
    0 4px 12px var(--glow-primary);
}

.post-tag:hover::before {
  opacity: 1;
}

.post-tag:hover span::before {
  opacity: 0.8;
}

/* 文章详情页标签样式 */
.post-header .post-tags {
  justify-content: center;
  margin-top: 16px;
}

.post-header .post-tag {
  font-size: 13px;
  padding: 8px 14px;
}

/* 文章列表页标签样式 */
.post-entry .post-tags {
  margin-top: 12px;
}

.post-entry .post-tag {
  font-size: 11px;
  padding: 5px 10px;
}

/* ============================================================
   主页专属布局优化 - 方案一：两栏 + Canvas在左栏底部
   ============================================================ */

.home-card {
  max-width: 1200px;
}

.home-card header {
  padding-bottom: 32px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.home-card header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), transparent);
}

/* 主内容两栏布局 */
.home-main {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 36px;
  align-items: start;
}

/* 左栏：自我介绍 + Quick Links + Canvas */
.home-intro {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.intro-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.section-title {
  margin: 0;
  font-size: clamp(26px, 2.6vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1.2;
}

.title-emoji {
  font-size: 1.15em;
  display: inline-block;
  animation: wave 2.5s ease-in-out infinite;
  transform-origin: 70% 70%;
}

@keyframes wave {
  0%, 100% { transform: rotate(0deg); }
  10%, 30% { transform: rotate(14deg); }
  20% { transform: rotate(-8deg); }
  40%, 100% { transform: rotate(0deg); }
}

.intro-text {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--text-secondary);
}

.chips-container {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* Quick Links 卡片样式 */
.quick-links-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  transition: all var(--transition-base);
}

.quick-links-card:hover {
  border-color: var(--border-bright);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-subtitle {
  margin: 0 0 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0.9;
}

.card-subtitle svg {
  opacity: 0.6;
}

.quick-links-card .links {
  gap: 12px;
}

.quick-links-card .link-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
}

.quick-links-card .link-row:last-child {
  border-bottom: none;
}

.quick-links-card .link-row:hover {
  padding-left: 6px;
  background: rgba(88, 166, 255, 0.03);
  margin: 0 -12px;
  padding-right: 12px;
  padding-left: 18px;
  border-radius: var(--radius-sm);
}

.link-label {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 14px;
  min-width: 90px;
  flex-shrink: 0;
}

.quick-links-card .link-row a {
  font-size: 14px;
  flex: 1;
}

/* Canvas 在左栏底部 - 终极圆角修复 */
.home-intro .canvas-wrapper {
  /* 不需要在这里设置 border-radius，由内部 canvas-container 控制 */
  transition: all var(--transition-slow);
}

.home-intro .canvas-wrapper .canvas-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow-md);
  /* 强制硬件加速和独立层 */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  isolation: isolate;
  position: relative;
}

.home-intro .canvas-wrapper .canvas-container:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-bright);
}

.home-intro .canvas-wrapper .demo {
  margin: 0;
  height: clamp(280px, 35vh, 400px);
  border: none;
  border-radius: 0;
}

.home-intro .canvas-wrapper .demo canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* 右栏：联系信息 */
.home-contact {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: 32px;
}

.contact-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.contact-card:hover {
  border-color: var(--border-bright);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.contact-info {
  margin-top: 20px;
}

.contact-email {
  margin-bottom: 16px;
}

.email-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.email-address {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  padding: 10px 14px;
  background: rgba(88, 166, 255, 0.05);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  font-family: 'SF Mono', 'Monaco', 'Cascadia Code', monospace;
  letter-spacing: -0.01em;
  transition: all var(--transition-base);
}

.email-address:hover {
  background: rgba(88, 166, 255, 0.08);
  border-color: var(--border);
}

.contact-message {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

.social-section {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.social-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.home-footer {
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border-subtle);
}

.home-footer footer {
  margin: 0;
  padding: 0;
  border: none;
}

/* ============================================================
   响应式设计
   ============================================================ */

@media (max-width: 960px) {
  main {
    grid-template-columns: 1fr;
  }
  
  aside.card-right {
    max-width: 100%;
  }

  /* 移动端：使用 display: contents 让子元素可以独立排序 */
  .home-main {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .home-intro {
    display: contents; /* 让子元素提升到 grid 层级，可以独立排序 */
  }

  /* 移动端顺序：
     1. 自我介绍
     2. Quick Links
     3. Contact Card
     4. Canvas
  */
  .intro-section {
    order: 1;
  }

  .quick-links-card {
    order: 2;
  }

  .home-contact {
    order: 3;
    position: relative;
    top: 0;
  }

  .canvas-wrapper {
    order: 4;
  }

  /* 移动端 Canvas 高度调整 */
  .home-intro .canvas-wrapper .demo,
  .canvas-wrapper .demo {
    height: clamp(240px, 30vh, 340px);
  }
}

@media (max-width: 640px) {
  :root {
    --radius-xl: 18px;
    --radius-lg: 14px;
    --radius-md: 12px;
  }
  
  .card {
    border-radius: var(--radius-lg);
  }
  
  header {
    flex-wrap: wrap;
  }

  nav.actions {
    width: 100%;
    margin-top: 20px;
  }

  nav.actions .btn {
    flex: 1 1 calc(50% - 6px);
  }

  nav.actions .btn.primary {
    flex-basis: 100%;
    order: -1;
  }

  .avatar {
    width: 80px;
    height: 80px;
    flex-basis: 80px;
    border-radius: var(--radius-lg);
  }
  
  .grid {
    gap: 10px;
  }
  
  .chip {
    padding: 8px 14px;
    font-size: 12px;
  }

  .home-card header {
    padding-bottom: 24px;
    margin-bottom: 32px;
  }

  .home-main {
    gap: 24px;
  }

  .section-title {
    font-size: 23px;
  }

  .intro-text {
    font-size: 15px;
  }

  .quick-links-card,
  .contact-card {
    padding: 20px;
  }

  .link-label {
    min-width: 75px;
    font-size: 13px;
  }

  .home-intro .canvas-wrapper .demo,
  .canvas-wrapper .demo {
    height: clamp(220px, 28vh, 300px);
  }

  .home-footer {
    padding: 16px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .bg {
    animation: none;
  }

  .title-emoji {
    animation: none;
  }
}

@media (max-width: 400px) {
  .title h1 {
    font-size: 24px;
  }

  .title p {
    font-size: 13px;
  }
  
  .social {
    gap: 8px;
  }
  
  .icon {
    width: 44px;
    height: 44px;
  }
}

/* ============================================================
   可访问性增强
   ============================================================ */

@media (prefers-contrast: high) {
  :root {
    --border: rgba(201, 209, 217, 0.3);
    --border-bright: rgba(201, 209, 217, 0.5);
  }
  
  .btn,
  .chip,
  .icon,
  .post-entry {
    border-width: 2px;
  }
}

/* ============================================================
   打印样式
   ============================================================ */

@media print {
  .bg,
  .demo,
  nav.actions,
  .social,
  footer {
    display: none;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
  
  body {
    background: white;
    color: black;
  }
}