/**
 * home.css - 首页合并样式（构建产物，勿手改）
 * 由 base/components/layout/hero/projects/responsive/index 按序拼接生成
 * 改动源文件后重跑 Pages/css/build-home-css.mjs
 */

/* ======== base.css ======== */
/* ========================
   CSS Custom Properties
   ======================== */
:root {
  /* Enhanced Color Palette */
  --background: #0A0E13;
  --background-secondary: #111920;
  --surface: #1A1F2E;
  --surface-elevated: #252A3A;
  --surface-hover: #2D3748;
  --primary: #00D9FF;
  --primary-hover: #00B8E6;
  --primary-light: #33E1FF;
  --accent: #FF6B6B;
  --accent-secondary: #4ECDC4;
  --accent-purple: #A78BFA;
  --accent-blue: #60A5FA;
  --accent-rose: #FB7185;
  --success: #51CF66;
  --warning: #FFD93D;
  --danger: #FF6B6B;
  --text: #F7FAFC;
  --text-secondary: #E2E8F0;
  --text-muted: #A0AEC0;
  --text-disabled: #718096;
  --border: #2D3748;
  --border-light: #4A5568;
  --border-focus: var(--primary);

  /* Enhanced Gradients */
  --gradient-primary: linear-gradient(135deg, #00D9FF 0%, #0EA5E9 50%, #3B82F6 100%);
  --gradient-accent: linear-gradient(135deg, #ff6b6b 0%, #FF8E8E 50%, #FFA8A8 100%);
  --gradient-success: linear-gradient(135deg, #4784b6 0%, #1d72cd 100%);
  --gradient-warm: linear-gradient(135deg, #FF6B6B 0%, #FFD93D 100%);
  --gradient-cool: linear-gradient(135deg, #00D9FF 0%, #4ECDC4 100%);
  --gradient-hero: linear-gradient(135deg,
      rgba(0, 217, 255, 0.1) 0%,
      rgba(78, 205, 196, 0.05) 35%,
      rgba(255, 107, 107, 0.05) 65%,
      rgba(255, 217, 61, 0.1) 100%);

  /* Glass Morphism */
  --glass-bg: rgba(26, 31, 46, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.37);

  /* Typography - Enhanced */
  --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Source Code Pro', monospace;
  --font-display: 'Inter', 'SF Pro Display', sans-serif;

  /* Spacing - Improved Scale */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4rem;     /* 64px */
  --space-4xl: 6rem;     /* 96px */

  /* Border Radius - Modern Scale */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Enhanced Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.3);
  --shadow-glow-accent: 0 0 20px rgba(255, 107, 107, 0.3);

  /* Transitions - Refined */
  --transition-fast: 0.05s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.1s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.15s cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;

  /* Breakpoints (for reference, used in responsive.css) */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1200px;
  --breakpoint-2xl: 1400px;
}

/* ========================
   Light Theme - 温润质感风格
   设计理念：柔和灰底，层次分明，视觉舒适
   ======================== */
body[data-theme='light'] {
  /* 背景色系 - 温润灰底 */
  --background: #EFF1F5;
  --background-secondary: #E5E8ED;
  --surface: #FFFFFF;
  --surface-elevated: #F5F6F8;
  --surface-hover: #E2E5EA;

  /* 主色调 - 专业蓝 */
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #3B82F6;

  /* 强调色 - 保持活力但更柔和 */
  --accent: #EF4444;
  --accent-secondary: #0D9488;
  --accent-purple: #8B5CF6;
  --accent-blue: #3B82F6;
  --accent-rose: #F87171;
  --success: #16A34A;
  --warning: #F59E0B;
  --danger: #EF4444;

  /* 文字色系 - 清晰层次 */
  --text: #111827;
  --text-secondary: #374151;
  --text-muted: #6B7280;
  --text-disabled: #9CA3AF;

  /* 边框 - 极简细线 */
  --border: #E5E7EB;
  --border-light: #F3F4F6;
  --border-focus: #2563EB;

  /* 玻璃效果 - 轻盈通透 */
  --glass-bg: rgba(255, 255, 255, 0.9);
  --glass-border: rgba(0, 0, 0, 0.06);
  --glass-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);

  /* 阴影 - 柔和扩散 */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.06), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  --shadow-glow-accent: 0 0 0 3px rgba(239, 68, 68, 0.15);

  /* 渐变 - 保持一致性 */
  --gradient-primary: linear-gradient(135deg, #2563EB 0%, #3B82F6 50%, #60A5FA 100%);
  --gradient-accent: linear-gradient(135deg, #EF4444 0%, #F87171 50%, #FCA5A5 100%);
  --gradient-success: linear-gradient(135deg, #059669 0%, #10B981 100%);
  --gradient-hero: linear-gradient(135deg,
      rgba(37, 99, 235, 0.03) 0%,
      rgba(13, 148, 136, 0.02) 35%,
      rgba(239, 68, 68, 0.02) 65%,
      rgba(245, 158, 11, 0.03) 100%);
}

/* 浅色主题下的额外样式覆盖 */
body[data-theme='light'] .navbar {
  background: rgba(239, 241, 245, 0.95);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

body[data-theme='light'] .navbar--scrolled {
  background: rgba(239, 241, 245, 0.98);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .card {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
}

body[data-theme='light'] .card:hover {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(37, 99, 235, 0.15);
  transform: translateY(-4px);
}

body[data-theme='light'] .note-toc {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .note-toc__link.is-active {
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
}

body[data-theme='light'] .btn--secondary {
  background: #FFFFFF;
  border: 1.5px solid rgba(0, 0, 0, 0.15);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

body[data-theme='light'] .btn--secondary:hover {
  background: var(--surface-hover);
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

body[data-theme='light'] .tech-badge {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.25);
  color: var(--primary);
}

body[data-theme='light'] .tech-badge:hover {
  background: rgba(37, 99, 235, 0.15);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

body[data-theme='light'] .tech-badge--accent {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.25);
  color: var(--accent);
}

body[data-theme='light'] .tech-badge--success {
  background: rgba(22, 163, 74, 0.1);
  border-color: rgba(22, 163, 74, 0.25);
  color: var(--success);
}

body[data-theme='light'] .tag {
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: var(--text-secondary);
}

body[data-theme='light'] .tag:hover {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.35);
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.12);
}

body[data-theme='light'] .sidebar {
  background: #FFFFFF;
  border-right: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.08);
}

body[data-theme='light'] .sidebar__link:hover {
  background: rgba(0, 0, 0, 0.05);
  box-shadow: -3px 0 0 var(--primary) inset;
}

body[data-theme='light'] .sidebar__link.active {
  background: rgba(37, 99, 235, 0.1);
  box-shadow: -3px 0 0 var(--primary) inset;
}

body[data-theme='light'] .sidebar__link::before {
  background: #FFFFFF;
  color: var(--text);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .footer {
  background: var(--background-secondary);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

body[data-theme='light'] .back-to-top {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.12);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .back-to-top:hover {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

body[data-theme='light'] .mobile-menu {
  background: rgba(239, 241, 245, 0.98);
  backdrop-filter: blur(20px);
}

body[data-theme='light'] .project-item {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

body[data-theme='light'] .project-item:hover {
  background: #FFFFFF;
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

body[data-theme='light'] ::selection {
  background: rgba(37, 99, 235, 0.2);
  color: var(--text);
}

body[data-theme='light'] .gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

body[data-theme='light'] .note-content blockquote {
  background: rgba(37, 99, 235, 0.06);
  border-left-color: var(--primary);
  border-left-width: 4px;
}

body[data-theme='light'] .note-content th {
  background: var(--surface-elevated);
  border-bottom: 2px solid rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .note-content tr:nth-child(even) {
  background: rgba(0, 0, 0, 0.03);
}

body[data-theme='light'] .info-item {
  background: rgba(37, 99, 235, 0.06);
  border-color: rgba(37, 99, 235, 0.15);
}

body[data-theme='light'] .note-card {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

body[data-theme='light'] .note-card:hover {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4rem;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  line-height: 1.65;
  color: var(--text);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* Enhanced Body Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 15% 15%, rgba(0, 217, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 85% 85%, rgba(239, 68, 68, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 50%, rgba(78, 205, 196, 0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: -2;
}

/* ========================
   Typography
   ======================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--text);
  letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); margin-bottom: var(--space-lg); }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: var(--space-lg); }
h3 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h5 { font-size: clamp(1.125rem, 2vw, 1.5rem); }
h6 { font-size: clamp(1rem, 1.5vw, 1.25rem); }

p {
  margin-bottom: var(--space-md);
  line-height: 1.7;
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-light);
  text-decoration: none;
}

a:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* ========================
   Selection & Scrollbar
   ======================== */
::selection {
  background: rgba(0, 217, 255, 0.3);
  color: var(--text);
}

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

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

::-webkit-scrollbar-thumb {
  /* 半透明主题色滑块：暗色青 #00D9FF / 亮色蓝 #2563EB，随 --primary 自动适配明暗主题 */
  /* 第一行是不支持 color-mix 的旧浏览器兜底值 */
  background: var(--border-light);
  background: color-mix(in srgb, var(--primary) 55%, transparent);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
  box-shadow: 0 0 8px color-mix(in srgb, var(--primary) 60%, transparent);
}

/* Firefox scrollbar */
* {
  scrollbar-width: auto;
  scrollbar-color: color-mix(in srgb, var(--primary) 60%, transparent) var(--background-secondary);
}

/* ========================
   Layout
   ======================== */
.container {
  max-width: min(1400px, calc(100vw - 2rem));
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

/* ========================
   Utility Classes
   ======================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.hidden { display: none; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
}

.gpu-accelerated {
  transform: translateZ(0);
}

.will-change {
  will-change: transform;
}

/* ======== components.css ======== */
/* ========================
   Grid System
   ======================== */
.grid {
  display: grid;
  gap: var(--space-xl);
  width: 100%;
}

.grid--auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(min(350px, 100%), 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
}

.grid--3-fixed {
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.grid--responsive {
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}

/* ========================
   Cards with Glass Morphism
   ======================== */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  will-change: transform, box-shadow, border-color;
  transform: translateZ(0);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  border-color: rgba(0, 217, 255, 0.4);
  transform: translateY(-8px) translateZ(0);
  box-shadow:
    var(--shadow-xl),
    0 0 30px rgba(0, 217, 255, 0.15);
}

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

.card--featured {
  background: linear-gradient(145deg,
      rgba(0, 217, 255, 0.1) 0%,
      rgba(26, 31, 46, 0.9) 50%,
      rgba(239, 68, 68, 0.1) 100%);
  border: 1px solid rgba(0, 217, 255, 0.3);
  position: relative;
}

.card--featured::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  z-index: -1;
  opacity: 0.1;
}

/* ========================
   Note Card (Index Page)
   ======================== */
.note-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.note-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.note-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 217, 255, 0.4);
  box-shadow: var(--shadow-xl), 0 0 30px rgba(0, 217, 255, 0.15);
}

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

/* ========================
   Buttons
   ======================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  will-change: transform;
  transform: translateZ(0);
  position: relative;
  overflow: hidden;
  min-height: 44px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn--primary {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--primary) 14%, transparent) 0%,
    color-mix(in srgb, var(--primary) 8%, transparent) 100%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--primary);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary) 28%, var(--glass-border)),
    0 4px 18px color-mix(in srgb, var(--primary) 12%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  text-shadow: 0 0 18px color-mix(in srgb, var(--primary) 35%, transparent);
}

.btn--primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--primary) 22%, transparent) 0%,
    color-mix(in srgb, var(--primary) 14%, transparent) 100%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary) 42%, var(--glass-border)),
    0 8px 28px color-mix(in srgb, var(--primary) 20%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  color: var(--primary-light);
  text-decoration: none;
  text-shadow: 0 0 22px color-mix(in srgb, var(--primary) 50%, transparent);
}

.btn--primary:active {
  transform: translateY(0) scale(0.98);
}

.btn--secondary {
  background: var(--glass-bg);
  color: var(--text);
  border: 2.5px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn--secondary:hover {
  background: var(--surface-elevated);
  border-color: var(--primary);
  color: var(--text);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: color-mix(in srgb, var(--surface-elevated) 58%, transparent);
  color: var(--text-secondary);
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--glass-border));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.btn--outline:hover {
  background: color-mix(in srgb, var(--primary) 12%, var(--surface-elevated));
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 48%, var(--glass-border));
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 217, 255, 0.12);
}

.btn--outline:active {
  transform: scale(0.97);
}

.btn--accent {
  background: var(--gradient-accent);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow-accent);
  color: white;
  text-decoration: none;
}

.btn--small {
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.8rem;
  min-height: 36px;
}

.btn--large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1rem;
  min-height: 52px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: var(--radius-xl);
}

/* ========================
   Tags
   ======================== */
.tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.156);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
}

.tag:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: rgba(0, 217, 255, 0.3);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 217, 255, 0.1);
}

/* ========================
   Tech Badges
   ======================== */
.tech-badge {
  background: rgba(0, 217, 255, 0.1);
  border: 1px solid rgba(0, 217, 255, 0.3);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.tech-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.tech-badge:hover {
  background: rgba(0, 217, 255, 0.2);
  border-color: var(--primary);
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-md), 0 0 15px rgba(0, 217, 255, 0.3);
}

.tech-badge:hover::before {
  left: 100%;
}

.tech-badge--accent {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--accent);
}

.tech-badge--accent:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 15px rgba(239, 68, 68, 0.3);
}

.tech-badge--success {
  background: rgba(81, 207, 102, 0.1);
  border-color: rgba(81, 207, 102, 0.3);
  color: var(--success);
}

.tech-badge--success:hover {
  background: rgba(81, 207, 102, 0.2);
  border-color: var(--success);
  box-shadow: var(--shadow-md), 0 0 15px rgba(81, 207, 102, 0.3);
}

/* ========================
   Loading States
   ======================== */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ========================
   Focus States
   ======================== */
.focus-ring {
  transition: box-shadow var(--transition-fast);
}

.focus-ring:focus {
  outline: none;
  box-shadow:
    0 0 0 2px var(--background),
    0 0 0 4px var(--primary);
}

/* ========================
   Light Theme Overrides
   ======================== */
body[data-theme='light'] .card {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
}

body[data-theme='light'] .card:hover {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(37, 99, 235, 0.15);
  transform: translateY(-4px);
}

body[data-theme='light'] .card::before {
  background: var(--gradient-primary);
  height: 3px;
}

body[data-theme='light'] .btn--primary {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--primary) 10%, transparent) 0%,
    color-mix(in srgb, var(--primary) 5%, transparent) 100%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary) 22%, var(--glass-border)),
    0 4px 14px rgba(37, 99, 235, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  color: var(--primary);
}

body[data-theme='light'] .btn--primary:hover {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--primary) 18%, transparent) 0%,
    color-mix(in srgb, var(--primary) 10%, transparent) 100%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary) 38%, var(--glass-border)),
    0 8px 22px rgba(37, 99, 235, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  color: var(--primary);
}

body[data-theme='light'] .btn--outline {
  background: color-mix(in srgb, #ffffff 72%, transparent);
  border-color: color-mix(in srgb, var(--primary) 28%, rgba(15, 23, 42, 0.12));
  color: var(--text);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

body[data-theme='light'] .btn--outline:hover {
  background: color-mix(in srgb, var(--primary) 10%, #ffffff);
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 50%, transparent);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.12);
}

body[data-theme='light'] .tag {
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .tag:hover {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.12);
}

body[data-theme='light'] .tech-badge {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.25);
  color: var(--primary);
}

body[data-theme='light'] .tech-badge:hover {
  background: rgba(37, 99, 235, 0.15);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

body[data-theme='light'] .tech-badge--accent {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.25);
  color: var(--accent);
}

body[data-theme='light'] .tech-badge--success {
  background: rgba(22, 163, 74, 0.1);
  border-color: rgba(22, 163, 74, 0.25);
  color: var(--success);
}

/* ========================
   GitHub Contribution Calendar (Snake + Labels)
   ======================== */
.github-calendar-wrapper {
    padding: var(--space-xl) 0;
    overflow-x: auto;
    display: flex;
    justify-content: center;
    user-select: none;
    /* -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    pointer-events: none; */
}

.github-calendar {
    display: inline-block;
    min-width: 720px;
    margin-left: 32px;
}

/* Snake 图片容器 — 相对定位，作为星期标签定位的参考系
 * 图片自然尺寸 880×192，viewBox="-16 -32 880 192"
 * 网格: 53列×7行，单元格12px，间距16px(中心到中心)
 * 网格左边缘: SVG_x=2 → 图片x=2+16=18px(2.045%)
 * 网格上边缘: SVG_y=2 → 图片y=2+32=32px(16.67%)
 * 行中心Y坐标(SVG): 2+6=8, 18+6=24, 34+6=40, 50+6=56, 66+6=72, 82+6=88, 98+6=104
 * 行中心图片Y(+32): 40, 56, 72, 88, 104, 120, 136
 * 百分比(÷192): 20.83%, 29.17%, 37.5%, 45.83%, 54.17%, 62.5%, 70.83% */
.github-calendar__grid {
    position: relative;
    min-width: 0;
}

.github-calendar__grid img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 活动折线图：放在 snake 日历下方，等比缩放 */
.github-activity-graph {
    display: block;
    width: 100%;
    max-width: 1200px;
    height: auto;
    margin: 1.25rem auto 0;
    border-radius: 12px;
}

/* 顶部月份标签 — 绝对定位叠在图片顶部空白区域
 * 图片顶部到网格顶部有32px(16.67%)空白
 * 月份标签放在 top:4px(2.08%) 到 top:12px(6.25%) 之间
 * 左边缘对齐网格左边缘(2.045%)，宽度=网格宽度(94.55%) */
.github-calendar__months {
    position: absolute;
    top: 4.17%;
    left: 2.045%;
    width: 94.55%;
    height: 12px;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.5);
    pointer-events: none;
    z-index: 2;
}

/* 每个 span 由 JS 绝对定位（left/width 按月占列数计算） */
.github-calendar__months span {
    position: absolute;
    top: 0;
    text-align: center;
}

/* 左侧星期标签 — 绝对定位在图片左边缘外侧，往下对齐行中心
 * GitHub 日历行序为周日开头：Mon=row1, Wed=row3, Fri=row5（每行 8.33%） */
.github-calendar__weekdays {
    position: absolute;
    top: 0;
    left: -15px;
    width: 28px;
    height: 100%;
    display: flex;
    flex-direction: column;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.5);
    pointer-events: none;
}

.github-calendar__weekdays span {
    position: absolute;
    right: 4px;
    line-height: 12px;
    height: 12px;
    white-space: nowrap;
}

.github-calendar__weekdays span:nth-child(1) { top: 29.16%; transform: translateY(-50%); }   /* Mon = row 1 */
.github-calendar__weekdays span:nth-child(2) { top: 45.83%; transform: translateY(-50%); }   /* Wed = row 3 */
.github-calendar__weekdays span:nth-child(3) { top: 62.5%; transform: translateY(-50%); }    /* Fri = row 5 */

body[data-theme='light'] .github-calendar__months,
body[data-theme='light'] .github-calendar__weekdays {
    color: rgba(0, 0, 0, 0.45);
}

body[data-theme='light'] .loading::after {
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.06), transparent);
}

/* ======== layout.css ======== */
/* ========================
   Navbar - Glass Morphism
   ======================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.navbar--scrolled {
  background: rgba(10, 14, 19, 0.75);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  box-shadow: var(--shadow-lg);
}

.navbar__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  height: 4.5rem;
  position: relative;
}

.navbar__brand {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.navbar__brand:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 8px rgba(0, 217, 255, 0.5));
}

.navbar__nav {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
  margin: 0 auto;
  padding: 0;
  justify-content: center;
  align-items: center;
}

.navbar__link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
  text-decoration: none;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: all var(--transition-normal);
  transform: translateX(-50%);
}

.navbar__link:hover {
  color: var(--primary);
  background: rgba(0, 217, 255, 0.1);
  transform: translateY(-1px);
}

.navbar__link:hover::after {
  width: 80%;
}

.navbar__link.active {
  color: var(--primary);
  background: rgba(0, 217, 255, 0.15);
}

.navbar__link.active::after {
  width: 80%;
}

/* Ensure navbar is above all floating elements */
.navbar {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 110000 !important;
}

/* ========================
   Mobile Navigation
   ======================== */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text);
  cursor: pointer;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle.active {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 217, 255, 0.07);
}

.mobile-menu-toggle i {
  font-size: 1.05rem;
  transition: transform 0.18s ease;
}

/* Full-screen immersive overlay */
.mobile-menu {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  inset: 0;
  background: rgba(37, 99, 235, 0.15);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  z-index: 1029;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 1.5rem 2rem;
  transition:
    opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.active {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

/* Mobile Menu Nav List */
.mobile-menu__nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  width: 100%;
  max-width: 320px;
}

.mobile-menu__link {
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 700;
  white-space: nowrap;
}

/* ========================
   Navbar Nav Buttons（返回/查看/首页）
   毛玻璃胶囊，和 widget 按钮统一设计语言
   ======================== */
.navbar-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  min-height: 2.05rem;
  padding: 0 0.78rem 0 0.42rem;
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--glass-border));
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  background: color-mix(in srgb, var(--surface-elevated) 72%, transparent);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.12);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.navbar-nav-btn:hover {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 50%, var(--glass-border));
  background: color-mix(in srgb, var(--primary) 9%, var(--surface-elevated));
  transform: translateY(-1px);
  box-shadow: 0 7px 18px rgba(0, 217, 255, 0.1);
  text-decoration: none;
}

.navbar-nav-btn:active {
  transform: scale(0.97);
}

.navbar-nav-btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.38rem;
  height: 1.38rem;
  border-radius: 50%;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.navbar-nav-btn:hover .navbar-nav-btn__icon {
  transform: translateX(-2px);
}

.navbar-nav-btn__icon i {
  font-size: 0.64rem;
}

.navbar-nav-btn__text {
  line-height: 1;
}

/* ========================
   Navbar Widgets (Theme / Lang / Share)
   统一设计：毛玻璃胶囊，flex 流式布局
   ======================== */

/* 基础按钮样式 — 所有 navbar widget 共用 */
.navbar-widget-btn {
  position: relative;
  background: color-mix(in srgb, var(--surface-elevated) 72%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 18%, var(--glass-border));
  border-radius: var(--radius-full);
  width: 2.05rem;
  height: 2.05rem;
  min-width: 2.05rem;
  min-height: 2.05rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  z-index: 1;
  font-size: 0.8rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.1);
}

.navbar-widget-btn:hover {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 48%, var(--glass-border));
  background: color-mix(in srgb, var(--primary) 9%, var(--surface-elevated));
  transform: translateY(-1px);
  box-shadow: 0 7px 18px rgba(0, 217, 255, 0.12);
}

.navbar-widget-btn:active {
  transform: scale(0.94);
}

.navbar-widget-btn i {
  font-size: 0.8rem;
  transition: transform 0.25s ease;
}

/* 主题切换 — 悬停时图标旋转 */
.theme-toggle:hover i {
  transform: rotate(150deg);
}

/* 分享按钮 — 悬停时图标抖动 */
.share-note-btn:hover i {
  transform: rotate(-12deg) scale(1.1);
}

/* 分享按钮 — 复制成功反馈 */
.share-note-btn.copied {
  border-color: var(--success);
  color: var(--success);
  background: rgba(81, 207, 102, 0.12);
}

/* 语言切换 — 文字标签而非图标 */
.negiao-lang-toggle,
.negiao-lang-toggle--nav {
  width: auto;
  min-width: 2.05rem;
  padding: 0 0.78rem;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  font-family: var(--font-sans);
}

.negiao-lang-toggle:hover,
.negiao-lang-toggle--nav:hover {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 48%, var(--glass-border));
  background: color-mix(in srgb, var(--primary) 9%, var(--surface-elevated));
}

/* 浮动语言按钮（无 navbar 时的降级） */
.negiao-lang-toggle--floating {
  position: fixed !important;
  right: max(1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
  top: auto;
  transform: none !important;
  z-index: 1065;
  width: 48px;
  height: 48px;
}

/* 侧边栏 footer 中的 widget — 更小更紧凑 */
.sidebar__footer .navbar-widget-btn {
  width: 2.35rem;
  height: 2.35rem;
  min-width: 2.35rem;
  min-height: 2.35rem;
  border-radius: 0.88rem;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  color: var(--text-muted);
}

.sidebar__footer .navbar-widget-btn:hover {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 24%, transparent);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
  transform: translateY(-1px);
  box-shadow: none;
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  .navbar-nav-btn {
    min-height: 2rem;
    padding: 0 0.62rem 0 0.34rem;
    font-size: 0.76rem;
  }

  .navbar-nav-btn__icon {
    width: 1.28rem;
    height: 1.28rem;
  }

  .navbar-widget-btn {
    width: 2rem;
    height: 2rem;
    min-width: 2rem;
    min-height: 2rem;
    font-size: 0.72rem;
  }

  .negiao-lang-toggle,
  .negiao-lang-toggle--nav {
    min-width: 2rem;
    padding: 0 0.5rem;
    font-size: 0.62rem;
  }

  .negiao-lang-toggle--floating {
    width: 42px;
    height: 42px;
    right: max(0.75rem, env(safe-area-inset-right));
    bottom: max(0.75rem, env(safe-area-inset-bottom));
  }
}

/* ========================
   Sidebar Navigation (Desktop)
   ======================== */
@media (min-width: 769px) {
  .sidebar ~ .main-content-wrapper .navbar {
    display: none !important;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 100px;
    background: rgba(26, 31, 46, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 1040;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 0;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.2);
  }

  .main-content-wrapper {
    margin-left: 100px;
    width: calc(100% - 100px);
    min-height: 100vh;
    position: relative;
    padding-bottom: 2rem;
  }

  .main-content-wrapper .container {
    max-width: 1600px !important;
    padding: 0 3rem !important;
  }
}

/* Mobile: Default stacked layout */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }

  .main-content-wrapper {
    margin-left: 0;
    width: 100%;
    padding-top: 4.5rem;
  }

  .navbar__nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .navbar__container {
    justify-content: space-between;
    position: relative;
  }

  .navbar__brand {
    position: static;
    transform: none;
  }

  .mobile-menu-toggle {
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    z-index: 1060;
    order: 3;
  }

  /* 移动端：widget 按钮紧跟在 brand 后面，hamburger 在最右 */
  .navbar__container .navbar-widget-btn {
    order: 2;
  }

  .navbar__container:has(.mobile-menu-toggle) .navbar-widget-btn {
    order: 2;
  }
}

@media (max-width: 576px) {
  .main-content-wrapper {
    padding-top: 3.5rem;
  }
}

/* Sidebar Elements */
.sidebar__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-bottom: 2rem;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-weight: 900;
  font-size: 1.25rem;
  text-decoration: none;
  letter-spacing: 0;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: transform 0.2s;
}

.sidebar__logo:hover {
  transform: scale(1.2);
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: center;
  width: 100%;
  flex-grow: 1;
  justify-content: center;
}

.sidebar__link {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  text-decoration: none;
  background: transparent;
}

.sidebar__link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--primary);
  transform: translateX(3px);
  box-shadow: -2px 0 0 var(--primary) inset;
}

.sidebar__link:hover i {
  transform: scale(1.1);
}

.sidebar__link.active {
  background: rgba(0, 217, 255, 0.1);
  color: var(--primary);
  box-shadow: -3px 0 0 var(--primary) inset;
}

/* Sidebar Tooltip */
.sidebar__link::before {
  content: attr(data-title);
  position: absolute;
  left: 70px;
  background: #262624;
  color: #fff;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-10px);
  transition: all 0.2s ease;
  pointer-events: none;
  z-index: 1050;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar__link:hover::before {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.sidebar__footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: center;
  width: 100%;
  margin-bottom: 2rem;
}

/* ========================
   Footer - Clean Styles
   ======================== */
.footer__content--centered {
  text-align: center;
}

.footer__nav-section {
  margin-bottom: var(--space-xl);
}

.footer__nav-title {
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.footer__nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer__nav-link {
  color: var(--text-muted);
  transition: all var(--transition-fast);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

.footer__nav-link i {
  margin-right: var(--space-xs);
}

.footer__brand-section {
  margin-bottom: var(--space-xl);
}

.footer__brand-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.footer__brand-desc {
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.footer__contact-panel {
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.footer__contact-title {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-size: 1rem;
}

.footer__contact-grid {
  display: grid;
  gap: var(--space-sm);
  max-width: 300px;
  margin: 0 auto;
  text-align: left;
}

.footer__contact-item {
  display: flex;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer__contact-item i {
  width: 20px;
  margin-right: var(--space-sm);
  color: var(--primary);
}

.footer__contact-item .label {
  margin-right: var(--space-sm);
}

.footer__contact-item .value {
  color: var(--text-secondary);
}

.footer__social-links {
  justify-content: center;
}

.footer__meta-section {
  border-top: 1px solid var(--border);
  padding-top: var(--space-lg);
}

.footer__meta-text {
  color: var(--text-disabled);
  font-size: 0.8rem;
  margin-bottom: var(--space-sm);
}

.footer__version {
  margin-left: 8px;
  opacity: 0.8;
  border: 1px solid var(--text-disabled);
  padding: 0 4px;
  border-radius: 4px;
}

.footer__map-container {
  margin-bottom: var(--space-sm);
  display: flex;
  justify-content: center;
  min-height: 100px;
}

.footer__tech-tags {
  font-size: 0.75rem;
  color: var(--text-disabled);
}

.footer__copyright {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

/* ========================
   Contact Section
   ======================== */
.contact-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  color: var(--primary);
  transition: color 0.25s ease;
}

.contact-card-icon svg {
  width: 26px;
  height: 26px;
}

.contact-card-title {
  text-align: center;
  margin-bottom: var(--space-sm);
}

.contact-card-desc {
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--text-muted);
}

.contact-card-btn {
  width: 100%;
}

.contact-card-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-method {
  display: flex;
  align-items: center;
  padding: var(--space-md);
  transition: transform 0.2s ease, background-color 0.2s ease;
  border-radius: var(--radius-md);
}

.contact-method:hover {
  background-color: var(--surface-alt);
  transform: translateX(5px);
}

.contact-icon-container {
  background: rgba(0, 217, 255, 0.1);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--space-lg);
  transition: all 0.3s ease;
}

.contact-method:hover .contact-icon-container {
  background: var(--primary);
}

.contact-icon {
  font-size: 1.75rem;
  color: var(--primary);
  transition: all 0.3s ease;
}

.contact-method:hover .contact-icon {
  color: white;
  transform: scale(1.1);
}

.contact-details {
  flex: 1;
}

.contact-details h4 {
  margin-bottom: var(--space-xs);
  font-size: 1.1rem;
  color: var(--text);
}

.contact-link {
  font-size: 1rem;
  font-weight: 500;
  display: block;
  margin-bottom: var(--space-xs);
}

.contact-description {
  color: var(--text-light);
  font-size: 0.9rem;
  margin: 0;
}

/* ========================
   Back to Top Button
   ======================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 999;
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

/* ======== hero.css ======== */
/* ========================
   Section Hero
   ======================== */
.section--hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 0;
  box-sizing: border-box;
}

.section--hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero);
  opacity: 0.6;
  pointer-events: none;
  z-index: -1;
}

.section--hero::after {
  content: '';
  position: absolute;
  width: min(40vw, 600px);
  height: min(40vw, 600px);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(0, 217, 255, 0.1) 0%, transparent 70%),
    linear-gradient(135deg, rgba(0, 217, 255, 0.05) 0%, rgba(78, 205, 196, 0.05) 100%);
  border: 2px solid rgba(0, 217, 255, 0.15);
  top: -10%;
  right: -10%;
  z-index: -1;
  animation: heroFloat 20s infinite alternate ease-in-out;
  backdrop-filter: blur(1px);
}

@keyframes heroFloat {
  0% {
    transform: translate(0, 0) rotate(0deg) scale(1);
  }
  33% {
    transform: translate(-3%, 2%) rotate(2deg) scale(1.05);
  }
  66% {
    transform: translate(2%, -3%) rotate(-1deg) scale(0.95);
  }
  100% {
    transform: translate(-1%, 1%) rotate(1deg) scale(1.02);
  }
}

/* ========================
   Hero Content
   ======================== */
.hero {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  margin-bottom: var(--space-lg);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 4px 8px rgba(0, 217, 255, 0.3));
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
  font-weight: 400;
}

.hero__actions {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-xl);
}

/* ========================
   Avatar with Modern Design
   ======================== */
.avatar-container {
  position: relative;
  width: var(--dynamic-avatar-container, 200px);
  height: var(--dynamic-avatar-container, 200px);
  margin: var(--space-lg) auto var(--space-2xl);
}

.avatar {
  width: var(--dynamic-avatar, 180px);
  height: var(--dynamic-avatar, 180px);
  border-radius: 50%;
  border: 3px solid transparent;
  background:
    linear-gradient(var(--surface-elevated), var(--surface-elevated)) padding-box,
    var(--gradient-primary) border-box;
  display: block;
  transition: all var(--transition-slow);
  box-shadow:
    var(--shadow-xl),
    0 0 40px rgba(0, 217, 255, 0.2);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  will-change: transform;
  object-fit: cover;
}

.avatar:hover {
  transform: translate(-50%, -50%) scale(1.08) rotate(2deg);
  box-shadow:
    var(--shadow-2xl),
    0 0 60px rgba(0, 217, 255, 0.4);
  border-color: var(--primary-light);
}

.avatar-glow {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  filter: blur(20px);
  opacity: 0.2;
  z-index: 1;
  animation: avatarPulse 4s infinite alternate ease-in-out;
}

.avatar-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid transparent;
  background: conic-gradient(from 0deg, var(--primary), var(--accent-secondary), var(--accent), var(--primary));
  z-index: 2;
  animation: rotate 15s linear infinite;
  opacity: 0.6;
}

.avatar-ring::before {
  content: '';
  position: absolute;
  inset: 2px;
  border-radius: 50%;
  background: var(--surface-elevated);
}

@keyframes avatarPulse {
  0% {
    transform: scale(1);
    opacity: 0.2;
  }
  100% {
    transform: scale(1.3);
    opacity: 0.35;
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* ========================
   Tech Badges Container
   ======================== */
.hero-tech-badges {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ========================
   Floating Shapes
   ======================== */
.floating-shapes {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  overflow: hidden;
  z-index: -1;
  pointer-events: none;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.1;
  filter: blur(40px);
}

.shape-1 {
  width: 300px;
  height: 300px;
  background-color: var(--primary);
  top: 20%;
  left: -100px;
  animation: float-1 25s infinite alternate ease-in-out;
}

.shape-2 {
  width: 200px;
  height: 200px;
  background-color: var(--accent);
  bottom: 10%;
  right: -50px;
  animation: float-2 20s infinite alternate-reverse ease-in-out;
}

.shape-3 {
  width: 150px;
  height: 150px;
  background-color: var(--success);
  top: 60%;
  left: 20%;
  animation: float-3 15s infinite alternate ease-in-out;
}

@keyframes float-1 {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  100% {
    transform: translate(50px, 50px) rotate(15deg);
  }
}

@keyframes float-2 {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  100% {
    transform: translate(-30px, -30px) rotate(-15deg);
  }
}

@keyframes float-3 {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(20px, -20px) scale(1.2);
  }
}

/* ========================
   Light Theme Overrides
   ======================== */
body[data-theme='light'] .section--hero {
  background: var(--background);
}

body[data-theme='light'] .section--hero::before {
  opacity: 0.6;
}

body[data-theme='light'] .section--hero::before {
  opacity: 0.5;
}

body[data-theme='light'] .section--hero::after {
  border-color: rgba(37, 99, 235, 0.08);
  background:
    radial-gradient(circle, rgba(37, 99, 235, 0.04) 0%, transparent 70%),
    linear-gradient(135deg, rgba(37, 99, 235, 0.02) 0%, rgba(78, 205, 196, 0.02) 100%);
}

body[data-theme='light'] .avatar {
  border: 3px solid #FFFFFF;
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.08),
    0 2px 4px rgba(0, 0, 0, 0.06),
    0 0 0 1px rgba(0, 0, 0, 0.05);
}

body[data-theme='light'] .avatar:hover {
  box-shadow:
    0 12px 24px rgba(0, 0, 0, 0.12),
    0 0 0 2px rgba(37, 99, 235, 0.2);
}

body[data-theme='light'] .avatar-glow {
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
  opacity: 0.4;
}

body[data-theme='light'] .avatar-ring {
  opacity: 0.3;
}

body[data-theme='light'] .floating-shapes .shape {
  opacity: 0.04;
  filter: blur(80px);
}

body[data-theme='light'] .shape-1 {
  background-color: rgba(37, 99, 235, 0.2);
}

body[data-theme='light'] .shape-2 {
  background-color: rgba(239, 68, 68, 0.15);
}

body[data-theme='light'] .shape-3 {
  background-color: rgba(22, 163, 74, 0.15);
}

body[data-theme='light'] .hero__title {
  filter: drop-shadow(0 2px 6px rgba(37, 99, 235, 0.18));
}

body[data-theme='light'] .hero__subtitle {
  color: var(--text-secondary);
  margin-bottom: 0; /* 或者 8px / 12px，根据需要微调 */
  display: flex;
    justify-content: center;
    align-items: center;
    margin: 0.35rem auto 0.45rem;
    line-height: 1;
    max-width: min(435px, 100%);
    min-height: 0;
}

/* ======== projects.css ======== */
/* ========================
   Projects Grid
   ======================== */
.projects {
  padding: var(--space-4xl) 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2xl);
  max-width: 1200px;
  margin: 0 auto;
}

/* ========================
   Project Card
   ======================== */
.project-item {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.project-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--primary);
  transition: height 0.3s ease;
}

.project-item:hover::before {
  height: 100%;
}

.project-item:hover {
  background: rgba(26, 31, 46, 0.6);
  border-color: rgba(0, 217, 255, 0.2);
  transform: translateY(-4px);
}

/* ========================
   Project Header
   ======================== */
.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.project-number {
  font-size: 2rem;
  font-weight: 700;
  color: rgba(0, 217, 255, 0.3);
  line-height: 1;
}

.project-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  background: rgba(37, 99, 235, 0.495);
  border-radius: 4px;
}

/* ========================
   Project Content
   ======================== */
.project-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

/* ========================
   Project Tags
   ======================== */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-xl);
}

/* ========================
   Project Link
   ======================== */
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: gap 0.3s ease;
}

.project-link:hover {
  gap: 12px;
}

.project-link i {
  font-size: 0.85rem;
  transition: transform 0.3s ease;
}

.project-link:hover i {
  transform: translateX(4px);
}

/* ========================
   Project Actions
   ======================== */
.project-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.project-link-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.project-link-secondary:hover {
  color: var(--primary);
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--primary);
}

/* ========================
   Projects Responsive
   ======================== */
@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .project-item {
    padding: var(--space-xl);
  }

  .project-number {
    font-size: 1.5rem;
  }

  .project-title {
    font-size: 1.25rem;
  }
}

/* ========================
   Light Theme Overrides
   ======================== */
body[data-theme='light'] .project-item {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

body[data-theme='light'] .project-item::before {
  background: var(--primary);
  width: 4px;
}

body[data-theme='light'] .project-item:hover {
  background: #FFFFFF;
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .project-number {
  color: rgba(37, 99, 235, 0.25);
}

body[data-theme='light'] .project-label {
  background: rgba(37, 99, 235, 0.12);
  color: var(--primary);
  font-weight: 600;
}

body[data-theme='light'] .project-link {
  color: var(--primary);
  font-weight: 600;
}

body[data-theme='light'] .project-link-secondary {
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .project-link-secondary:hover {
  color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.15);
}

/* ======== responsive.css ======== */
/* ========================
   Large Tablets & Small Laptops (≤1024px)
   ======================== */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  .hero__title {
    font-size: clamp(2.8rem, 5vw, 4rem);
  }

  .navbar__container {
    padding: 0 var(--space-lg);
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    position: relative;
  }

  .grid--3-fixed {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }
}

/* ========================
   Tablets (≤768px)
   ======================== */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .hero__title {
    font-size: clamp(2.2rem, 6vw, 3.5rem);
    margin-bottom: var(--space-sm);
  }

  .hero__subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    padding: 0 var(--space-sm);
    text-align: center;
    margin-bottom: var(--space-lg);
    line-height: 1.5;
  }

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

  .hero__actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    max-width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-sm);
  }

  .hero__actions .btn {
    width: auto;
    flex: 0 1 auto;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.85rem;
    min-height: 42px;
  }

  .avatar-container {
    margin: var(--space-md) auto var(--space-lg);
  }

  .hero-tech-badges {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    max-width: 100%;
  }

  .tech-badge {
    width: auto;
    max-width: none;
    justify-content: center;
    padding: var(--space-xs) var(--space-md);
    font-size: 0.8rem;
  }

  .grid--2,
  .grid--3,
  .grid--3-fixed,
  .grid--responsive {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .card {
    padding: var(--space-lg);
    align-items: center;
    justify-content: center;
    text-align: center;
  }

  .footer__content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-lg);
  }

  .footer__navigation {
    margin-bottom: var(--space-lg) !important;
  }

  .footer__navigation nav ul {
    flex-direction: column !important;
    gap: var(--space-sm) !important;
  }

  .footer__brand {
    margin-bottom: var(--space-lg) !important;
  }

  .footer__brand > p {
    font-size: 0.9rem !important;
    padding: 0 var(--space-sm);
  }

  .footer .contact-details {
    padding: var(--space-md) !important;
  }

  .footer .contact-details > div {
    max-width: 100% !important;
  }

  .footer__meta {
    padding-top: var(--space-md) !important;
  }

  .card .contact-icon-container {
    width: 50px !important;
    height: 50px !important;
    margin-bottom: var(--space-md) !important;
  }

  .card .contact-icon-container i {
    font-size: 1.25rem !important;
  }

  .grid--3-fixed .card {
    padding: var(--space-lg);
  }

  .grid--3-fixed .card h4 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
  }

  .grid--3-fixed .card p {
    font-size: 0.85rem;
    line-height: 1.5;
  }

  .back-to-top {
    border: 2.5px solid var(--border);
    bottom: 20px;
    right: 50px;
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  h1 {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
  }

  h2 {
    font-size: clamp(1.5rem, 4vw, 2rem);
  }

  h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
  }

  .footer__navigation ul {
    flex-direction: column;
    gap: var(--space-md) !important;
  }

  .footer__navigation ul li a {
    display: block;
    padding: var(--space-sm) var(--space-md) !important;
    background: rgba(0, 217, 255, 0.05);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 217, 255, 0.1);
  }

  .footer__navigation ul li a:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: rgba(0, 217, 255, 0.3);
    color: var(--primary);
  }
}

/* ========================
   Mobile Phones (≤576px)
   ======================== */
@media (max-width: 576px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .section {
    padding: var(--space-xl) 0;
  }

  .hero__title {
    font-size: clamp(2rem, 8vw, 3rem);
    line-height: 1;
    margin-bottom: var(--space-xs);
  }

  .hero__subtitle {
    font-size: clamp(0.95rem, 4vw, 1.125rem);
    margin-bottom: var(--space-md);
    padding: 0;
  }

  .hero__subtitle img {
    max-width: 90%;
    height: auto;
  }

  .avatar-container {
    margin: var(--space-sm) auto var(--space-md);
  }

  .hero-tech-badges {
    margin-bottom: var(--space-md);
    gap: var(--space-xs);
  }

  .tech-badge {
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-sm);
  }

  .hero__actions {
    flex-direction: column;
    gap: var(--space-sm);
    padding: 0 var(--space-md);
    max-width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.85rem;
  }

  .btn--small {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.75rem;
  }

  .card {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
  }

  .navbar__container {
    height: 3.5rem;
    padding: 0 var(--space-sm);
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-sm);
    position: relative;
  }

  .navbar__brand {
    font-size: 1.15rem;
  }

  .floating-shapes {
    display: none;
  }

  .project-item {
    padding: var(--space-lg);
  }

  .project-title {
    font-size: 1.15rem;
  }

  .project-desc {
    font-size: 0.875rem;
  }

  .footer {
    padding: var(--space-xl) 0;
  }

  .social-links {
    gap: var(--space-md);
    justify-content: center !important;
  }

  .btn,
  .navbar__link,
  .social-link {
    min-height: 44px;
    min-width: 44px;
  }

  .contact-method {
    flex-direction: column;
    text-align: center;
    padding: var(--space-lg) var(--space-md);
  }

  .contact-icon-container {
    margin-right: 0;
    margin-bottom: var(--space-md);
  }
}

/* ========================
   Extra Small Phones (≤375px)
   ======================== */
@media (max-width: 375px) {
  .hero__title {
    font-size: clamp(1.75rem, 10vw, 2.5rem);
  }

  .hero__subtitle {
    font-size: 0.9rem;
  }

  .hero__subtitle img {
    max-width: 85%;
  }

  .avatar-container {
    margin: var(--space-xs) auto var(--space-sm);
  }

  .tech-badge {
    font-size: 0.7rem;
    padding: 3px var(--space-sm);
  }

  .hero__actions .btn {
    font-size: 0.8rem;
    padding: var(--space-xs) var(--space-md);
    min-height: 40px;
  }

  .project-item {
    padding: var(--space-md);
  }

  .project-number {
    font-size: 1.25rem;
  }

  .project-title {
    font-size: 1.05rem;
  }
}

/* ========================
   High DPI Displays
   ======================== */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
  .avatar {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* ========================
   Reduced Motion
   ======================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .floating-shapes,
  .avatar-glow,
  .avatar-ring {
    display: none;
  }
}

/* ========================
   Print Styles
   ======================== */
@media print {
  :root {
    --background: #ffffff;
    --text: #000000;
    --text-secondary: #3F3E3A;
    --surface: #ffffff;
    --border: #D6D3C9;
  }

  body {
    background: white;
    color: black;
  }

  .navbar,
  .mobile-menu-toggle,
  .back-to-top,
  #toc-toggle,
  .loading-screen,
  .floating-shapes,
  .hero::before,
  .hero::after {
    display: none !important;
  }

  .container {
    width: 100%;
    max-width: none;
    padding: 0;
    margin: 0;
  }

  .card,
  .note-content,
  .schedule-container {
    box-shadow: none;
    border: 1px solid #D6D3C9;
    background: white;
    color: black;
  }

  a {
    text-decoration: underline;
    color: black;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #6B6A62;
  }

  .avatar-glow,
  .floating-shapes,
  .hero__actions {
    display: none;
  }
}

/* ========================
   Accessibility
   ======================== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

*:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* ======== index.css ======== */
/* ========================
   页面级变量
   ======================== */
.home-page {
  --hero-grid-line: rgba(255, 255, 255, 0.035);
  --hero-blob-1: color-mix(in srgb, var(--primary) 16%, transparent);
  --hero-blob-2: color-mix(in srgb, var(--accent-secondary) 13%, transparent);
  --hero-blob-3: color-mix(in srgb, var(--accent) 9%, transparent);
  --tile-bg: color-mix(in srgb, var(--surface) 72%, transparent);
}

body[data-theme='light'].home-page {
  --hero-grid-line: rgba(15, 23, 42, 0.05);
  --hero-blob-1: color-mix(in srgb, var(--primary) 10%, transparent);
  --hero-blob-2: color-mix(in srgb, var(--accent-secondary) 8%, transparent);
  --hero-blob-3: color-mix(in srgb, var(--accent) 6%, transparent);
  --tile-bg: rgba(255, 255, 255, 0.75);
}

/* ========================
   首页桌面侧边导航
   ======================== */
@media (min-width: 769px) {
  .home-page .home-sidebar {
    width: 96px;
    padding: 1.25rem 0;
    background: transparent;
    border-right: none;
    box-shadow: none;
    pointer-events: none;
  }

  .home-page .home-sidebar::before {
    content: none;
  }

  .home-page .sidebar__logo,
  .home-page .sidebar__nav,
  .home-page .sidebar__footer {
    pointer-events: auto;
  }

  .home-page .sidebar__logo {
    width: 3rem;
    height: 3rem;
    margin: 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    background: color-mix(in srgb, var(--surface-elevated) 78%, transparent);
    -webkit-text-fill-color: currentColor;
    border: 1px solid color-mix(in srgb, var(--primary) 26%, var(--glass-border));
    border-radius: 1.1rem;
    text-decoration: none;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(18px) saturate(130%);
    -webkit-backdrop-filter: blur(18px) saturate(130%);
    transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  .home-page .sidebar__logo:hover {
    border-color: color-mix(in srgb, var(--primary) 55%, var(--glass-border));
    background: color-mix(in srgb, var(--primary) 12%, var(--surface-elevated));
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(0, 217, 255, 0.12);
  }

  .home-page .sidebar__logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    font-weight: 900;
    line-height: 1;
  }

  .home-page .sidebar__logo-text {
    display: none;
  }

  .home-page .sidebar__nav {
    flex-grow: 0;
    width: 3.6rem;
    margin: auto auto 0;
    padding: 0.42rem;
    gap: 0.28rem;
    justify-content: center;
    border: 1px solid color-mix(in srgb, var(--glass-border) 82%, transparent);
    border-radius: 1.35rem;
    background: color-mix(in srgb, var(--surface-elevated) 62%, transparent);
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(20px) saturate(130%);
    -webkit-backdrop-filter: blur(20px) saturate(130%);
  }

  .home-page .sidebar__link {
    width: 2.55rem;
    height: 2.55rem;
    border: 1px solid transparent;
    border-radius: 0.95rem;
    color: color-mix(in srgb, var(--text-muted) 86%, transparent);
    background: transparent;
    box-shadow: none;
    overflow: visible;
    font-size: 1rem;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  .home-page .sidebar__link-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    border-radius: inherit;
  }

  .home-page .sidebar__link:hover {
    color: var(--text);
    background: color-mix(in srgb, var(--surface-elevated) 82%, transparent);
    border-color: color-mix(in srgb, var(--glass-border) 85%, transparent);
    transform: translateY(-1px);
  }

  .home-page .sidebar__link.active {
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 13%, transparent);
    border-color: color-mix(in srgb, var(--primary) 28%, transparent);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  }

  .home-page .sidebar__link:hover i,
  .home-page .sidebar__link.active i {
    transform: scale(1.05);
  }

  .home-page .sidebar__link::after {
    content: '';
    position: absolute;
    right: -0.48rem;
    width: 2px;
    height: 1rem;
    border-radius: var(--radius-full);
    background: var(--primary);
    opacity: 0;
    transform: scaleY(0.55);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .home-page .sidebar__link:hover::after {
    opacity: 0.28;
    transform: scaleY(0.85);
  }

  .home-page .sidebar__link.active::after {
    opacity: 1;
    transform: scaleY(1);
  }

  .home-page .sidebar__link::before {
    left: 3.85rem;
    padding: 0.42rem 0.66rem;
    border-color: color-mix(in srgb, var(--glass-border) 90%, transparent);
    border-radius: 0.7rem;
    background: color-mix(in srgb, var(--surface-elevated) 96%, transparent);
    color: var(--text);
    font-size: 0.74rem;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.24);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }

  .home-page .sidebar__footer {
    width: 3.6rem;
    margin: 0.85rem auto 0;
    padding: 0.42rem;
    gap: 0.28rem;
    border: 1px solid color-mix(in srgb, var(--glass-border) 82%, transparent);
    border-radius: 1.25rem;
    background: color-mix(in srgb, var(--surface-elevated) 58%, transparent);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(20px) saturate(130%);
    -webkit-backdrop-filter: blur(20px) saturate(130%);
  }

  .home-page .sidebar__footer::before {
    display: none;
  }

  .home-page .sidebar__footer .sidebar__link,
  .home-page .sidebar__footer .theme-toggle {
    width: 2.35rem;
    height: 2.35rem;
    min-width: 2.35rem;
    min-height: 2.35rem;
    margin: 0;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 0.88rem;
    background: transparent;
    color: var(--text-muted);
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease, transform 0.2s ease;
  }

  .home-page .sidebar__footer .negiao-lang-toggle {
    width: auto;
    min-width: 2.35rem;
    height: 1.75rem;
    min-height: 1.75rem;
    margin: 0;
    padding: 0 0.45rem;
    border: 1px solid transparent;
    border-radius: 999px;
    background: transparent;
    color: var(--text-muted);
    box-shadow: none;
    font-size: 0.62rem;
    font-weight: 850;
    letter-spacing: 0.06em;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease, transform 0.2s ease;
  }

  .home-page .sidebar__footer .sidebar__link:hover,
  .home-page .sidebar__footer .theme-toggle:hover,
  .home-page .sidebar__footer .negiao-lang-toggle:hover {
    color: var(--primary);
    border-color: color-mix(in srgb, var(--primary) 24%, transparent);
    background: color-mix(in srgb, var(--primary) 10%, transparent);
    transform: translateY(-1px);
  }

  .home-page .sidebar__footer .sidebar__link::after {
    display: none;
  }

  .home-page .main-content-wrapper {
    margin-left: 96px;
    width: calc(100% - 96px);
  }
}


.home-page .section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.home-page .social-links {
  display: flex;
  gap: var(--space-lg);
}

.home-page .social-link {
  color: var(--text-muted);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
}

.home-page .social-link:hover {
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
  transform: translateY(-2px);
  text-decoration: none;
}

.home-page * {
  scrollbar-width: thin;
  scrollbar-color: var(--border) var(--background-secondary);
}

/* ========================
   区块标题组件
   ======================== */
.home-page .section-head {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.home-page .section-head__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.home-page .section-head__eyebrow::before,
.home-page .section-head__eyebrow::after {
  content: '';
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary));
}

.home-page .section-head__eyebrow::after {
  background: linear-gradient(90deg, var(--primary), transparent);
}

.home-page .section-head__title {
  font-size: clamp(1.7rem, 3.6vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.home-page .section-head__sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0 auto;
  max-width: 560px;
  line-height: 1.6;
}

/* ========================
   Hero 升级
   ======================== */
.home-page .section--hero {
  /* 严格一屏：CSS 兜底 100svh，main-enhanced.js 会以精确像素高度覆盖（解决移动端地址栏 100vh 偏差） */
  height: 100vh;
  height: 100svh;
  min-height: 0;
  /* 底部留出滚动提示的位置 */
  padding: max(0.75rem, 1.5vh) 0 max(2.4rem, 4vh);
  overflow: hidden;
}

/* 一屏内的纵向节奏：全部随视口高度压缩，杜绝溢出 */
.home-page .avatar-container {
  width: min(var(--dynamic-avatar-container, 224px), 24vh);
  height: min(var(--dynamic-avatar-container, 224px), 24vh);
  margin: 0 auto clamp(0.6rem, 2vh, 1.8rem);
}

.home-page .avatar {
  width: min(var(--dynamic-avatar, 200px), 21.5vh);
  height: min(var(--dynamic-avatar, 200px), 21.5vh);
}

.home-page .hero__title {
  font-size: min(clamp(2.2rem, 6vw, 5rem), 9vh);
  margin-bottom: clamp(0.4rem, 1.4vh, 1.4rem);
}

/* 停用旧的大圆环装饰，由 hero-bg 接管 */
.home-page .section--hero::after {
  display: none;
}

/* GIS 网格底纹：整页背景，随页面滚动 */
.home-page .hero-bg {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: -1;
  pointer-events: none;
}

.home-page .hero-bg__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hero-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
}

/* 极光色斑：仅 transform 动画，GPU 合成，成本极低 */
.home-page .hero-bg__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  will-change: transform;
}

.home-page .hero-bg__blob--1 {
  width: 56vw;
  height: 56vw;
  max-width: 720px;
  max-height: 720px;
  background: radial-gradient(circle, var(--hero-blob-1) 0%, transparent 70%);
  top: 10%;
  right: -8%;
  animation: home-drift-1 36s ease-in-out infinite alternate;
}

.home-page .hero-bg__blob--2 {
  width: 44vw;
  height: 44vw;
  max-width: 580px;
  max-height: 580px;
  background: radial-gradient(circle, var(--hero-blob-2) 0%, transparent 70%);
  bottom: 5%;
  left: -6%;
  animation: home-drift-2 44s ease-in-out infinite alternate;
}

.home-page .hero-bg__blob--3 {
  width: 30vw;
  height: 30vw;
  max-width: 400px;
  max-height: 400px;
  background: radial-gradient(circle, var(--hero-blob-3) 0%, transparent 70%);
  top: 60%;
  left: 30%;
  animation: home-drift-3 30s ease-in-out infinite alternate;
}

@keyframes home-drift-1 {
  to { transform: translate(-6%, 8%) scale(1.08); }
}

@keyframes home-drift-2 {
  to { transform: translate(7%, -6%) scale(0.94); }
}

@keyframes home-drift-3 {
  to { transform: translate(5%, 6%) scale(1.12); }
}

/* 问候语 */
.home-page .hero__greeting {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.home-page .hero__greeting::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 10px color-mix(in srgb, var(--success) 60%, transparent);
}

/* 标题微光扫过 */
.home-page .hero__title {
  background: linear-gradient(
    110deg,
    #00d9ff 0%, #0ea5e9 28%, #3b82f6 46%, #7dd3fc 52%, #3b82f6 58%, #00d9ff 100%
  );
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: home-title-sheen 9s linear infinite;
}

body[data-theme='light'].home-page .hero__title {
  background: linear-gradient(
    110deg,
    #2563eb 0%, #1d4ed8 30%, #3b82f6 48%, #93c5fd 52%, #3b82f6 56%, #2563eb 100%
  );
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: home-title-sheen 9s linear infinite;
}

@keyframes home-title-sheen {
  0% { background-position: 0% 0; }
  100% { background-position: -220% 0; }
}

.home-page .hero__subtitle {
  display: flex;
  justify-content: center;
  margin: 0.3rem auto clamp(0.6rem, 1.8vh, 1.5rem);
  max-width: min(435px, 100%);
  min-height: 0;
}

.home-page .hero__subtitle img {
  display: block;
  max-width: 100%;
  height: auto;
  max-height: max(34px, 5vh);
  margin: 0 auto;
}

.home-page .hero__greeting {
  margin-bottom: clamp(0.2rem, 0.8vh, 0.6rem);
}

.home-page .hero-tech-badges {
  margin-bottom: clamp(0.7rem, 2vh, 2rem);
}

.home-page .hero__actions {
  margin-top: 0;
  margin-bottom: clamp(0.9rem, 2.6vh, 3rem);
  gap: clamp(0.6rem, 1.4vw, 1.5rem);
}

/* ========================
   快速通道（中转强化）
   ======================== */
.home-page .quick-nav {
  max-width: 860px;
  margin: 0 auto;
}

.home-page .quick-nav__label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--text-disabled);
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  margin: 0 0 clamp(0.5rem, 1.2vh, 1rem);
  justify-content: center;
}

.home-page .quick-nav__label::before,
.home-page .quick-nav__label::after {
  content: '';
  flex: 1;
  max-width: 180px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border));
}

.home-page .quick-nav__label::after {
  background: linear-gradient(90deg, var(--border), transparent);
}

.home-page .quick-nav__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-sm);
}

.home-page .quick-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 0.5rem 0.8rem;
  background: var(--tile-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-decoration: none;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, color 0.22s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.home-page .quick-tile i {
  font-size: 1.15rem;
  color: var(--primary);
  transition: transform 0.22s ease;
}

.home-page .quick-tile:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--primary) 45%, transparent);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18), 0 0 18px color-mix(in srgb, var(--primary) 14%, transparent);
  color: var(--text);
  text-decoration: none;
}

.home-page .quick-tile:hover i {
  transform: scale(1.15);
}

/* 向下滚动提示 */
.home-page .hero-scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  color: var(--text-disabled);
  font-size: 0.85rem;
  animation: home-cue 2.2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes home-cue {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.55; }
  50% { transform: translateX(-50%) translateY(6px); opacity: 1; }
}

/* ========================
   项目卡片升级
   ======================== */
.home-page .projects-grid {
  gap: var(--space-xl);
}

.home-page .project-item {
  border-radius: var(--radius-xl);
  background: linear-gradient(
    160deg,
    color-mix(in srgb, var(--surface) 92%, var(--primary) 8%) 0%,
    var(--surface) 38%
  );
  isolation: isolate;
}

body[data-theme='light'].home-page .project-item {
  background: #ffffff;
}

/* 序号改为大水印 */
.home-page .project-number {
  position: absolute;
  top: 0.4rem;
  right: 0.9rem;
  font-size: 4.6rem;
  font-weight: 800;
  color: color-mix(in srgb, var(--primary) 9%, transparent);
  z-index: -1;
  user-select: none;
}

body[data-theme='light'].home-page .project-number {
  color: color-mix(in srgb, var(--primary) 12%, transparent);
}

.home-page .project-header {
  margin-bottom: var(--space-md);
}

.home-page .project-label {
  background: color-mix(in srgb, var(--primary) 14%, transparent);
  color: var(--primary);
  border: 1px solid color-mix(in srgb, var(--primary) 22%, transparent);
  border-radius: var(--radius-full);
  font-weight: 600;
}

.home-page .project-title {
  transition: color 0.25s ease;
}

.home-page .project-item:hover .project-title {
  color: var(--primary);
}

.home-page .project-tags {
  margin-bottom: var(--space-lg);
}

.home-page .project-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28), 0 0 24px color-mix(in srgb, var(--primary) 10%, transparent);
}

body[data-theme='light'].home-page .project-item:hover {
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.12);
}

/* ========================
   研究专题：城市卡片
   ======================== */
.home-page .research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  max-width: 1100px;
  margin: 0 auto;
}

.home-page .research-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
}

.home-page .research-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-cool);
  opacity: 0;
  transition: opacity 0.22s ease;
}

.home-page .research-card__icon {
  flex: none;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--accent-secondary) 14%, transparent);
  color: var(--accent-secondary);
  font-size: 1.05rem;
  transition: transform 0.22s ease;
}

.home-page .research-card__body {
  min-width: 0;
}

.home-page .research-card__city {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.2rem;
}

.home-page .research-card__meta {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin: 0;
}

.home-page .research-card__arrow {
  margin-left: auto;
  color: var(--text-disabled);
  font-size: 0.85rem;
  transition: transform 0.22s ease, color 0.22s ease;
}

.home-page .research-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent-secondary) 45%, transparent);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
  text-decoration: none;
}

.home-page .research-card:hover::before {
  opacity: 1;
}

.home-page .research-card:hover .research-card__icon {
  transform: scale(1.1) rotate(-6deg);
}

.home-page .research-card:hover .research-card__arrow {
  transform: translateX(4px);
  color: var(--accent-secondary);
}

body[data-theme='light'].home-page .research-card:hover {
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.1);
}

/* ========================
   联系卡片微调
   ======================== */
.home-page #contact .card {
  padding: var(--space-xl) var(--space-2xl);
}

.home-page .contact-card-icon {
  transition: color 0.25s ease, transform 0.25s ease;
}

.home-page #contact .card:hover .contact-card-icon {
  transform: translateY(-3px) scale(1.1);
  color: var(--primary-hover);
}

/* ========================
   页脚（基础 + 微调）
   ======================== */
.home-page .footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  background: var(--background-secondary);
}

.home-page .footer__content {
  max-width: 800px;
  margin: 0 auto;
}

.home-page .footer__contact-panel {
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  border: 1px solid var(--glass-border);
}

.home-page .footer__copyright-text {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

/* ========================
   响应式
   ======================== */
@media (max-width: 1024px) {
  .home-page .quick-nav__grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 768px) {
  .home-page .section {
    padding: var(--space-3xl) 0;
  }

  /* 移动端同样严格一屏：进一步压缩纵向节奏 */
  .home-page .section--hero {
    padding: max(0.5rem, 1vh) 0 max(1rem, 2vh);
  }

  .home-page .avatar-container {
    width: min(var(--dynamic-avatar-container, 160px), 19vh);
    height: min(var(--dynamic-avatar-container, 160px), 19vh);
    margin-bottom: clamp(0.5rem, 1.5vh, 1.2rem);
  }

  .home-page .avatar {
    width: min(var(--dynamic-avatar, 140px), 17vh);
    height: min(var(--dynamic-avatar, 140px), 17vh);
  }

  .home-page .hero__title {
    font-size: min(clamp(2rem, 9vw, 3rem), 6.5vh);
  }

  .home-page .hero-tech-badges {
    gap: 0.5rem;
    margin-bottom: clamp(0.6rem, 1.6vh, 1.2rem);
  }

  .home-page .hero-tech-badges .tech-badge {
    font-size: 0.72rem;
    padding: 0.35rem 0.7rem;
  }

  .home-page .hero__actions {
    gap: 0.5rem;
    margin-bottom: clamp(0.8rem, 2vh, 1.6rem);
  }

  .home-page .hero__actions .btn {
    padding: 0.55rem 1rem;
    font-size: 0.85rem;
  }

  .home-page .hero__actions .btn--large {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }

  .home-page .hero-scroll-cue {
    display: none;
  }

  .home-page .project-number {
    font-size: 3.4rem;
  }

  .home-page .hero-bg__blob {
    filter: blur(50px);
  }
}

@media (max-width: 576px) {
  .home-page .quick-nav__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
  }

  .home-page .quick-tile {
    font-size: 0.74rem;
    padding: 0.55rem 0.3rem 0.5rem;
    gap: 0.35rem;
  }

  .home-page .quick-tile i {
    font-size: 1rem;
  }

  .home-page .research-grid {
    grid-template-columns: 1fr;
  }

  .home-page .research-card {
    padding: var(--space-md) var(--space-lg);
  }
}

/* ========================
   矮视口压缩（保证一屏装下）
   ======================== */
@media (max-height: 760px) {
  .home-page .hero__greeting {
    display: none;
  }

  .home-page .quick-tile {
    padding: 0.55rem 0.4rem 0.5rem;
    gap: 0.3rem;
    font-size: 0.74rem;
  }

  .home-page .quick-tile i {
    font-size: 1rem;
  }

  .home-page .hero-scroll-cue {
    display: none;
  }
}

/* 极矮视口（横屏手机等）：一屏确实装不下时允许滚动，避免内容被裁切 */
@media (max-height: 520px) {
  .home-page .section--hero {
    height: auto !important;
    min-height: 100vh;
    min-height: 100svh;
  }
}

/* ========================
   动效偏好与降级
   ======================== */
@media (prefers-reduced-motion: reduce) {
  .home-page .hero-bg__blob,
  .home-page .hero__title,
  .home-page .hero-scroll-cue {
    animation: none !important;
  }
}