/* ---------- CSS 变量 ---------- */
:root {
  /* 主色 - 温暖的中性色调，不过于AI */
  --color-primary: #d97706;
  --color-primary-light: #f59e0b;
  --color-primary-dark: #b45309;
  --color-primary-rgb: 217, 119, 6;

  /* 中性色 - 偏暖灰 */
  --color-bg: #fafaf9;
  --color-bg-alt: #f5f5f4;
  --color-surface: #ffffff;
  --color-surface-hover: #fafaf9;
  --color-border: #e7e5e4;
  --color-border-light: #f5f5f4;

  /* 文字 */
  --color-text: #1c1917;
  --color-text-secondary: #57534e;
  --color-text-muted: #a8a29e;

  /* 功能色 */
  --color-success: #059669;
  --color-warning: #d97706;
  --color-error: #dc2626;

  /* 渐变 - 移除AI味，改用纯色或极简微渐变 */
  --gradient-primary: linear-gradient(135deg, #d97706, #ea580c);
  --gradient-hero: linear-gradient(180deg, #fafaf9 0%, #f5f5f4 100%);
  --gradient-card: linear-gradient(135deg, #d97706 0%, #ea580c 100%);

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 字体 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* 布局 */
  --header-height: 80px;
  --container-max: 1400px;
  --section-padding: 120px 0;
}

/* ---------- 暗色主题 ---------- */
[data-theme="dark"] {
  --color-bg: #1c1917;
  --color-bg-alt: #292524;
  --color-surface: #292524;
  --color-surface-hover: #3f3f46;
  --color-border: #44403c;
  --color-border-light: #292524;
  --color-text: #fafaf9;
  --color-text-secondary: #a8a29e;
  --color-text-muted: #78716c;
  --gradient-hero: linear-gradient(180deg, #1c1917 0%, #292524 100%);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  transition: background var(--transition-base), color var(--transition-base);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  display: block;
}

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

ul, ol {
  list-style: none;
}

/* ---------- 工具类 ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: var(--section-padding);
  position: relative;
  scroll-margin-top: 80px;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  background: rgba(217, 119, 6, 0.08);
  transition: all var(--transition-fast);
}

.btn-link:hover {
  background: rgba(217, 119, 6, 0.15);
  color: var(--color-primary-dark);
  transform: translateY(-1px);
}

/* ---------- 动画基础 (GSAP handles reveal) ---------- */

/* ---------- 导航栏 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

[data-theme="dark"] .site-header {
  background: var(--color-bg);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 16px;
}

.brand {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

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

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
  flex-wrap: nowrap;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.nav-link {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.nav-link.active {
  color: var(--color-primary);
  background: rgba(217, 119, 6, 0.08);
}

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

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 36px;
  padding: 4px 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.hamburger.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.is-open span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* 主题切换 */
.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  position: relative;
  border: 1px solid var(--color-border);
}

.theme-toggle svg {
  position: absolute;
  transition: opacity 0.25s ease, transform 0.35s ease;
}

.theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0.7);
}

.theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* 亮色模式下显示太阳 */
[data-theme="light"] .theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(90deg) scale(0.7);
}

[data-theme="light"] .theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(90deg) scale(0.7);
}

.theme-toggle:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.theme-toggle:active {
  transform: scale(0.92);
}

/* 语言切换 */
.lang-toggle {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
}

.lang-toggle:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.mobile-nav-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

/* 移动端导航 */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-nav-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: -280px;
  width: 280px;
  height: 100%;
  background: var(--color-surface);
  z-index: 95;
  padding: 80px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: right var(--transition-base);
  box-shadow: var(--shadow-xl);
}

.mobile-nav.is-open {
  right: 0;
}

.mobile-nav-link {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

/* ---------- Section 通用 ---------- */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-primary);
  background: rgba(217, 119, 6, 0.08);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.section-lead {
  text-align: center;
  max-width: 720px;
  margin: -32px auto 48px;
  color: var(--color-text-secondary);
  font-size: 1.1rem;
}

/* ---------- Hero ---------- */
.section--hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  padding-top: var(--header-height);
  position: relative;
  overflow: hidden;
}

.hero-container {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-avatar-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 28px;
}

.hero-avatar-glow {
  display: none;
}

.hero-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-surface);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.hero-greeting {
  font-size: 1.25rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 8px;
}

.hero-name {
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--color-text);
  margin-bottom: 16px;
}

.hero-typing-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 1.3rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  min-height: 32px;
}

.hero-typing-prefix {
  font-weight: 500;
}

.hero-typing-text {
  color: var(--color-primary);
  font-weight: 600;
}

.hero-typing-cursor {
  color: var(--color-primary);
  animation: blink 1s step-end infinite;
}

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

.hero-subtitle {
  max-width: 640px;
  margin: 0 auto 48px;
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.scroll-indicator {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.scroll-indicator:hover {
  color: var(--color-primary);
}

.scroll-indicator-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  gap: 20px;
  max-width: 840px;
  margin: 0 auto;
}

.skill-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: all var(--transition-fast);
}

.skill-item:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.skill-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.skill-icon {
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.skill-name {
  flex: 1;
  font-weight: 600;
  font-size: 1.05rem;
}

.skill-pct {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
}

.skill-desc {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.skill-bar {
  height: 6px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-bar-fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.skill-item.is-visible .skill-bar-fill {
  width: var(--target-width);
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  max-width: 840px;
  margin: 0 auto;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding: 20px 24px;
  margin-bottom: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 28px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
}

.timeline-item:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 6px;
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.timeline-summary {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.timeline-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(217, 119, 6, 0.08);
  color: var(--color-primary);
  font-weight: 500;
}

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
}

.project-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  color: var(--color-primary);
}

.project-card .title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.project-card .desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.project-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ---------- AI Chats ---------- */
.ai-chats-grid {
  display: grid;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.ai-chat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
}

.ai-chat-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
}

.ai-chat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.ai-chat-card-icon {
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.ai-chat-card-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.ai-chat-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.ai-chat-card-summary {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.chat-preview {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.chat-preview-bubble {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  font-size: 0.82rem;
  line-height: 1.6;
}

.chat-preview-bubble:last-child {
  margin-bottom: 0;
}

.chat-preview-bubble.me {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.chat-preview-bubble.ai {
  background: rgba(217, 119, 6, 0.06);
  border: 1px solid rgba(217, 119, 6, 0.15);
}

.chat-preview-role {
  font-weight: 600;
  font-size: 0.75rem;
  display: block;
  margin-bottom: 4px;
}

.ai-chat-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.chat-card-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(217, 119, 6, 0.08);
  color: var(--color-primary);
  font-weight: 500;
}

.chat-expanded {
  overflow: hidden;
}

.ai-chat-expand-btn {
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.section-more {
  text-align: center;
  margin-top: 32px;
}

/* ---------- Stats ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: all var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
}

.stat-sublabel {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* ---------- Travel ---------- */
.travel-current {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.travel-pulse {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-success);
  position: relative;
}

.travel-pulse::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--color-success);
  animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(1.8); opacity: 0; }
}

.travel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.travel-city {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  transition: all var(--transition-fast);
}

.travel-city:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.travel-city.highlight {
  border-color: var(--color-primary);
  background: rgba(79, 70, 229, 0.04);
}

.travel-city-name {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.travel-city-tag {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.travel-city-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(217, 119, 6, 0.08);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 4px;
}

/* ---------- Favorites ---------- */
.favorites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.favorite-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
}

.favorite-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
}

.favorite-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.favorite-card-icon {
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  color: var(--color-primary);
}

.favorite-card-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.favorite-person-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.favorite-songs {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.favorite-artist-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.favorite-artist-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--color-border-light);
}

.favorite-song-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  transition: all 0.15s ease;
  border-left: 3px solid transparent;
}

.favorite-song-item:hover {
  background: var(--color-surface);
  border-left-color: var(--color-primary);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.song-info {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
}

.favorite-song-name {
  font-weight: 500;
  color: var(--color-text);
}

.favorite-card-subtitle {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.music-icon {
  position: relative;
}

.music-bars {
  position: absolute;
  bottom: -2px;
  right: -4px;
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
}

.music-bars span {
  display: block;
  width: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: musicBar 0.8s ease-in-out infinite;
}

.music-bars span:nth-child(1) { height: 4px; animation-delay: 0s; }
.music-bars span:nth-child(2) { height: 8px; animation-delay: 0.15s; }
.music-bars span:nth-child(3) { height: 6px; animation-delay: 0.3s; }
.music-bars span:nth-child(4) { height: 10px; animation-delay: 0.45s; }

@keyframes musicBar {
  0%, 100% { transform: scaleY(0.5); opacity: 0.6; }
  50% { transform: scaleY(1); opacity: 1; }
}

.favorite-achievements {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.favorite-achievement-item {
  text-align: center;
  padding: 12px 8px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
}

.favorite-achievement-value {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-primary);
}

.favorite-achievement-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* 蛋仔派对地图列表 */
.egg-maps-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.egg-map-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.egg-map-item:hover {
  background: rgba(217, 119, 6, 0.06);
}

.egg-map-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  color: var(--color-primary);
}

.egg-map-info {
  flex: 1;
  min-width: 0;
}

.egg-map-name {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.egg-map-desc {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.egg-map-tag {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(217, 119, 6, 0.08);
  color: var(--color-primary);
  font-weight: 500;
  flex-shrink: 0;
}

/* ---------- Guestbook ---------- */
.guestbook-wall {
  margin-bottom: 40px;
  overflow: hidden;
}

.guestbook-track {
  display: flex;
  margin-bottom: 12px;
  overflow: hidden;
}

.guestbook-track-inner {
  display: flex;
  will-change: transform;
  animation: scroll-left 30s linear infinite;
  padding-left: 12px;
}

.guestbook-track--row2 .guestbook-track-inner {
  animation: scroll-right 35s linear infinite;
}

@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-33.3333%); }
}

@keyframes scroll-right {
  0% { transform: translateX(-33.3333%); }
  100% { transform: translateX(0); }
}

.guestbook-card {
  flex-shrink: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  min-width: 240px;
  max-width: 300px;
  margin-left: 12px;
}

.guestbook-card-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.guestbook-card-msg {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.guestbook-card-time {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-top: 8px;
  font-family: var(--font-mono);
}

/* 留言表单 */
.guestbook-form-wrap {
  max-width: 720px;
  margin: 0 auto;
}

.guestbook-form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.guestbook-form-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.guestbook-form-icon {
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  color: var(--color-primary);
}

.guestbook-form-title {
  font-size: 1rem;
  font-weight: 700;
}

.guestbook-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  resize: vertical;
  transition: border-color var(--transition-fast);
  line-height: 1.6;
}

.guestbook-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.1);
}

.guestbook-textarea::placeholder {
  color: var(--color-text-muted);
}

.guestbook-form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  gap: 16px;
}

.guestbook-name-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
}

.guestbook-toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.guestbook-toggle-input {
  display: none;
}

.guestbook-toggle-switch {
  width: 36px;
  height: 20px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--transition-fast);
}

.guestbook-toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.guestbook-toggle-input:checked + .guestbook-toggle-switch {
  background: var(--color-primary);
}

.guestbook-toggle-input:checked + .guestbook-toggle-switch::after {
  transform: translateX(16px);
}

.guestbook-name-input {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.85rem;
  font-family: inherit;
  width: 120px;
  transition: border-color var(--transition-fast);
}

.guestbook-name-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.guestbook-submit-btn {
  padding: 10px 24px;
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.guestbook-submit-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* 浮动留言按钮 */
.guestbook-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-fast);
}

.guestbook-fab:hover {
  transform: scale(1.08);
  box-shadow: var(--shadow-xl);
}

.guestbook-fab-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  animation: pulse-ring 2s ease-out infinite;
}

.guestbook-fab-icon {
  font-size: 1.2rem;
  filter: none;
}

.guestbook-fab-icon {
  font-size: 1.4rem;
  filter: grayscale(1) brightness(10);
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 80px 0 40px;
  text-align: center;
  border-top: 1px solid var(--color-border-light);
}

.footer-cta {
  margin-bottom: 32px;
}

.footer-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.footer-desc {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.footer-link-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-link-icon {
  font-size: 1.1rem;
  display: flex;
  align-items: center;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.footer-copy a {
  color: var(--color-text-muted);
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
  }

  .nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-name {
    font-size: 2.75rem;
  }

  .hero-avatar {
    width: 110px;
    height: 110px;
  }

  .section-title {
    font-size: 2rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .favorites-grid {
    grid-template-columns: 1fr;
  }

  .favorite-card {
    padding: 20px;
  }

  .favorite-song-item {
    padding: 6px 8px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .travel-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .favorites-grid {
    grid-template-columns: 1fr;
  }

  .guestbook-form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .guestbook-submit-btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .footer-links {
    flex-direction: column;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .hero-name {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .travel-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ---------- 选中样式 ---------- */
::selection {
  background: rgba(217, 119, 6, 0.2);
  color: var(--color-text);
}