/* ===================================
   全局样式和变量
   =================================== */
:root {
    /* Professional Blue & Orange配色方案 */
    --primary-color: #2563EB;
    --secondary-color: #3B82F6;
    --accent-color: #F97316;
    --background-light: #F8FAFC;
    --background-dark: #0F172A;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --border-color: #E2E8F0;
    --card-background: #FFFFFF;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #2563EB 0%, #3B82F6 100%);
    --gradient-accent: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 字体 */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* 边框半径 */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 0.75rem;
    --border-radius-2xl: 1rem;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
}

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

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

body {
    font-family: var(--font-main);
    background-color: var(--background-light);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 1rem;
}

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

::-webkit-scrollbar-track {
    background: #F1F5F9;
}

::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: 4px;
    transition: background var(--transition-normal);
}

::-webkit-scrollbar-thumb:hover {
    background: #94A3B8;
}

/* 选择文本效果 */
::selection {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
}

::-moz-selection {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
}

/* 焦点效果 */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 按钮基础样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
    font-family: var(--font-main);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-icon {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-normal);
    stroke-width: 2;
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* 粒子背景 */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* ===================================
   导航栏样式
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: transform var(--transition-normal);
    color: var(--text-primary);
}

.logo:hover {
    transform: translateY(-1px);
}

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

.logo-dot {
    color: var(--primary-color);
    font-size: 1.6rem;
    font-weight: 900;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    position: relative;
    padding: 0.6rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
    border-radius: 1px;
}

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

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

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

.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 0.4rem;
    padding: 0.75rem;
    border-radius: var(--border-radius-sm);
    background: #F1F5F9;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.hamburger:hover {
    background: #E2E8F0;
    transform: scale(1.05);
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
    border-radius: 1px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

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

/* ===================================
   英雄区域样式
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 8rem 1.5rem 4rem;
    overflow: hidden;
    background: var(--background-light);
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 1s ease 0.2s both;
    max-width: 550px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.05em;
    color: var(--text-primary);
}

.title-line {
    display: block;
    color: var(--text-secondary);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.title-name {
    display: block;
    color: var(--primary-color);
    font-size: 4rem;
    font-weight: 700;
    margin: 0.75rem 0;
    letter-spacing: -0.05em;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 500px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease 0.4s both;
    position: relative;
}

/* 音乐播放器样式 */
.music-player {
    position: relative;
    width: 100%;
    max-width: 450px;
    padding: 2rem;
}

.player-container {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-2xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.player-container:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(59, 130, 246, 0.1);
}

.player-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2.5rem;
    position: relative;
}

.vinyl {
    position: relative;
    width: 200px;
    height: 200px;
    margin-bottom: 2rem;
}

.vinyl-spinner {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, #111 0%, #333 60%, #111 100%);
    border-radius: 50%;
    position: relative;
    overflow: hidden;
    animation: rotate 6s linear infinite;
    box-shadow: var(--shadow-lg);
}

.vinyl-spinner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 3px dashed rgba(59, 130, 246, 0.15);
    border-radius: 50%;
}

.vinyl-spinner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.6);
}

.vinyl-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.6), inset 0 0 10px rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

/* 音频波形动画 */
.audio-wave {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    height: 70px;
    margin-bottom: 1.5rem;
    padding: 0 1rem;
    background: #F1F5F9;
    border-radius: 40px;
    border: 1px solid var(--border-color);
}

.wave-bar {
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 3px;
    animation: wave 1.2s ease-in-out infinite;
    transition: all 0.3s ease;
}

.wave-bar:nth-child(1) { animation-delay: 0s; height: 20px; }
.wave-bar:nth-child(2) { animation-delay: 0.08s; height: 30px; }
.wave-bar:nth-child(3) { animation-delay: 0.16s; height: 40px; }
.wave-bar:nth-child(4) { animation-delay: 0.24s; height: 50px; }
.wave-bar:nth-child(5) { animation-delay: 0.32s; height: 60px; }
.wave-bar:nth-child(6) { animation-delay: 0.4s; height: 50px; }
.wave-bar:nth-child(7) { animation-delay: 0.48s; height: 40px; }
.wave-bar:nth-child(8) { animation-delay: 0.56s; height: 30px; }
.wave-bar:nth-child(9) { animation-delay: 0.64s; height: 20px; }
.wave-bar:nth-child(10) { animation-delay: 0.72s; height: 30px; }

.player-info {
    margin-bottom: 2rem;
    text-align: center;
}

.song-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 1.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 1rem;
}

.song-progress-container {
    position: relative;
    margin-bottom: 1.5rem;
    padding: 0 1rem;
}

.time-display {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-family: var(--font-mono);
}

.song-progress {
    height: 6px;
    background: var(--gradient-primary);
    border-radius: 3px;
    width: 0;
    transition: width 0.1s ease;
    position: relative;
}

.song-progress::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -6px;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
}

.song-progress-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 1rem;
    right: 1rem;
    height: 6px;
    background: #E2E8F0;
    border-radius: 3px;
    z-index: -1;
}

.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #F8FAFC;
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
}

.control-button {
    width: 45px;
    height: 45px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.control-button:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md), 0 0 15px rgba(59, 130, 246, 0.3);
    transform: scale(1.1);
}

.control-button.play-button {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
    box-shadow: var(--shadow-md), 0 0 20px rgba(59, 130, 246, 0.3);
}

.control-button.play-button:hover {
    background: var(--secondary-color);
    box-shadow: var(--shadow-lg), 0 0 25px rgba(59, 130, 246, 0.4);
    transform: scale(1.15);
}

.control-button svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    transition: transform var(--transition-normal);
}

.control-button:hover svg {
    transform: scale(1.1);
}

.control-button.play-button svg {
    width: 24px;
    height: 24px;
}

/* 歌曲目录样式 */
.song-menu {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 320px;
    max-height: 400px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    z-index: 10;
}

.menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.menu-header h3 {
    color: var(--text-primary);
    margin: 0;
    font-size: 1.1rem;
}

.close-button {
    width: 30px;
    height: 30px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.close-button:hover {
    background: var(--error-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.menu-content {
    padding: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.song-item {
    padding: 1rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-bottom: 0.5rem;
    border: 1px solid transparent;
}

.song-item:hover {
    background: #F1F5F9;
    border-color: var(--border-color);
    transform: translateX(5px);
}

.song-item.active {
    background: rgba(59, 130, 246, 0.05);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.song-item-title {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin: 0;
}

.song-item-duration {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin: 0.25rem 0 0;
}

/* 自定义滚动条 */
.menu-content::-webkit-scrollbar {
    width: 6px;
}

.menu-content::-webkit-scrollbar-track {
    background: #F1F5F9;
    border-radius: 3px;
}

.menu-content::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: 3px;
}

.menu-content::-webkit-scrollbar-thumb:hover {
    background: #94A3B8;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    transform: rotate(45deg);
}

/* ===================================
   通用区域样式
   =================================== */
section {
    padding: 8rem 2rem;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: block;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.05em;
}

.title-underline {
    width: 80px;
    height: 3px;
    background: var(--gradient-primary);
    margin: 0 auto;
    border-radius: 2px;
}

/* ===================================
   关于区域样式
   =================================== */
.about {
    background: #FFFFFF;
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    position: relative;
}

.about-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: #F8FAFC;
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
    box-shadow: var(--shadow-md);
}

.stat-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.code-block {
    background: #FFFFFF;
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    max-width: 550px;
    transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.code-block:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(59, 130, 246, 0.1);
}

.code-header {
    display: flex;
    gap: 0.8rem;
    padding: 1.2rem 1.5rem;
    background: #F1F5F9;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.code-dot:hover {
    transform: scale(1.2);
}

.code-dot.red { 
    background: #EF4444;
}
.code-dot.yellow { 
    background: #F59E0B;
}
.code-dot.green { 
    background: #10B981;
}

.code-content {
    padding: 2rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    overflow-x: auto;
    background: #F8FAFC;
    position: relative;
}

.code-content pre {
    margin: 0;
}

.code-content code {
    color: var(--text-primary);
}

/* ===================================
   技能区域样式
   =================================== */
.skills {
    background: #F8FAFC;
    position: relative;
}

.skills-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    position: relative;
}

.skill-card {
    background: #FFFFFF;
    border-radius: var(--border-radius-xl);
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.skill-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(59, 130, 246, 0.1);
}

.skill-card:hover::before {
    transform: scaleX(1);
}

.skill-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    margin-bottom: 2rem;
    color: var(--primary-color);
    border: 1px solid rgba(59, 130, 246, 0.2);
    transition: all 0.3s ease;
    position: relative;
}

.skill-card:hover .skill-icon {
    background: rgba(59, 130, 246, 0.15);
    transform: scale(1.1);
}

.skill-icon svg {
    width: 36px;
    height: 36px;
    transition: transform 0.3s ease;
}

.skill-card:hover .skill-icon svg {
    transform: rotate(15deg) scale(1.1);
}

.skill-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
}

.skill-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1rem;
    line-height: 1.7;
    position: relative;
}

.skill-bar {
    height: 6px;
    background: #E2E8F0;
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    width: 0;
    transition: width 1s ease;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ===================================
   项目区域样式
   =================================== */
.projects {
    background: #FFFFFF;
    position: relative;
}

.projects-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 3rem;
    position: relative;
}

.project-card {
    background: #FFFFFF;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
    box-shadow: var(--shadow-md);
}

.project-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(59, 130, 246, 0.1);
}

.project-image {
    height: 280px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(249, 115, 22, 0.1) 100%);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(59, 130, 246, 0.6) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease, transform 0.4s ease;
    transform: translateY(20px);
    z-index: 1;
}

.project-card:hover .project-overlay {
    opacity: 1;
    transform: translateY(0);
}

.project-tech {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0 2rem;
}

.project-tech span {
    padding: 0.6rem 1.2rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--primary-color);
    border-radius: 25px;
    font-size: 0.9rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.project-tech span:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.project-info {
    padding: 2.5rem;
    position: relative;
    z-index: 1;
    background: #FFFFFF;
}

.project-title {
    font-size: 1.7rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
    font-size: 1.05rem;
}

.project-links {
    display: flex;
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.project-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.75rem;
    background: rgba(0, 245, 255, 0.15);
    border: 1px solid var(--neon-blue);
    border-radius: var(--border-radius-md);
    color: var(--neon-blue);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
}

.project-link:hover {
    background: var(--neon-blue);
    color: var(--background-dark);
    box-shadow: 0 0 25px var(--neon-blue);
    transform: translateY(-3px);
}

.project-link svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.project-link:hover svg {
    transform: rotate(15deg) scale(1.1);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid var(--neon-blue);
    border-radius: 8px;
    color: var(--neon-blue);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.project-link:hover {
    background: var(--neon-blue);
    color: var(--background-dark);
    box-shadow: var(--shadow-glow);
}

.project-link svg {
    width: 18px;
    height: 18px;
}

/* ===================================
   联系区域样式
   =================================== */
.contact {
    background: #F8FAFC;
    position: relative;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    position: relative;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-item {
    display: flex;
    gap: 1.75rem;
    padding: 2rem;
    background: #FFFFFF;
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    box-shadow: var(--shadow-md);
    position: relative;
}

.contact-item:hover {
    transform: translateX(15px) translateY(-5px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(59, 130, 246, 0.1);
}

.contact-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    color: var(--primary-color);
    flex-shrink: 0;
    border: 1px solid rgba(59, 130, 246, 0.2);
    transition: all 0.3s ease;
    position: relative;
}

.contact-item:hover .contact-icon {
    background: rgba(59, 130, 246, 0.15);
    transform: scale(1.1);
}

.contact-icon svg {
    width: 28px;
    height: 28px;
    transition: transform 0.3s ease;
}

.contact-item:hover .contact-icon svg {
    transform: rotate(15deg) scale(1.1);
}

.contact-details {
    position: relative;
}

.contact-details h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 2.5rem;
    background: #FFFFFF;
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.25rem 1.75rem;
    background: #F8FAFC;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 1.1rem;
    font-family: var(--font-main);
    transition: all 0.4s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm), 0 0 0 3px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
}

.form-group textarea {
    resize: vertical;
    min-height: 180px;
}

.form-group button {
    align-self: flex-start;
}

/* ===================================
   页脚样式
   =================================== */
.footer {
    background: #FFFFFF;
    padding: 4rem 2rem;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.footer-logo {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform var(--transition-normal);
}

.footer-logo:hover {
    transform: translateY(-2px);
}

.footer-logo .logo-text {
    color: var(--text-primary);
}

.footer-logo .logo-dot {
    color: var(--primary-color);
    font-size: 1.6rem;
    font-weight: 900;
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #F1F5F9;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md), 0 0 15px rgba(59, 130, 246, 0.3);
    transform: translateY(-3px);
}

.social-link svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.social-link:hover svg {
    transform: scale(1.1);
}

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 1rem;
    text-align: center;
}

.footer-copyright::before {
    content: '';
    display: block;
    width: 80px;
    height: 2px;
    background: var(--primary-color);
    margin: 0 auto 1.5rem;
    border-radius: 1px;
}

/* ===================================
   响应式设计
   =================================== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .title-name {
        font-size: 3rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

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

@media (max-width: 768px) {
    .navbar {
        padding: 1rem 0;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(0, 245, 255, 0.15);
    }

    .nav-container {
        padding: 0 1.5rem;
    }

    .logo {
        font-size: 1.3rem;
        font-weight: 800;
        letter-spacing: 2px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 90%;
        height: 100vh;
        background: linear-gradient(135deg, rgba(10, 10, 15, 0.98) 0%, rgba(26, 26, 46, 0.98) 100%);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding: 100px 1.5rem 2rem;
        transition: right var(--transition-normal), box-shadow var(--transition-normal);
        backdrop-filter: blur(20px);
        z-index: 999;
        box-shadow: -15px 0 40px rgba(0, 245, 255, 0.3);
        border-left: 1px solid rgba(0, 245, 255, 0.2);
    }

    .nav-menu.active {
        right: 0;
        box-shadow: -20px 0 50px rgba(0, 245, 255, 0.4);
    }

    .hamburger {
        display: flex;
        cursor: pointer;
        user-select: none;
        z-index: 1000;
        padding: 0.8rem;
        border-radius: var(--border-radius-md);
        transition: all var(--transition-normal);
        border: 1px solid rgba(0, 245, 255, 0.2);
        background: rgba(0, 245, 255, 0.1);
        box-shadow: 0 0 15px rgba(0, 245, 255, 0.2);
    }

    .hamburger:hover {
        background: rgba(0, 245, 255, 0.15);
        transform: scale(1.08);
    }

    .hamburger.active {
        background: rgba(0, 245, 255, 0.2);
        box-shadow: 0 0 20px rgba(0, 245, 255, 0.4);
    }

    .hamburger span {
        transition: all var(--transition-normal);
        width: 28px;
        height: 3px;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
        box-shadow: 0 0 15px var(--neon-blue);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
        transform: translateX(-15px);
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -7px);
        box-shadow: 0 0 15px var(--neon-blue);
    }

    .nav-link {
        font-size: 1.4rem;
        padding: 1.5rem 1.2rem;
        min-width: 100%;
        text-align: left;
        border-bottom: 1px solid rgba(0, 245, 255, 0.1);
        width: 100%;
        border-radius: var(--border-radius-md);
        margin-bottom: 0.75rem;
        transition: all var(--transition-normal);
        color: var(--text-secondary);
        font-weight: 500;
    }

    .nav-link:hover {
        transform: translateX(15px);
        color: var(--neon-blue);
        background: rgba(0, 245, 255, 0.15);
        box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
        border-color: rgba(0, 245, 255, 0.2);
    }

    .nav-link::after {
        display: none;
    }

    .nav-link:active {
        transform: translateX(15px) scale(0.98);
        background: rgba(0, 245, 255, 0.2);
    }

    .nav-link.active {
        color: var(--neon-blue);
        background: rgba(0, 245, 255, 0.15);
        border-color: rgba(0, 245, 255, 0.3);
        box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
    }

    .hero {
        padding: 6rem 1.5rem 4rem;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--background-dark) 0%, rgba(26, 26, 46, 0.8) 50%, var(--background-dark) 100%);
    }

    .hero::before {
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(0, 245, 255, 0.15) 0%, rgba(123, 44, 191, 0.1) 50%, transparent 75%);
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 3.5rem;
        text-align: center;
        max-width: 500px;
        margin: 0 auto;
        position: relative;
        z-index: 1;
    }

    .hero-text {
        order: 2;
        animation: fadeInUp 1s ease 0.3s both;
    }

    .hero-visual {
        order: 1;
        animation: fadeInDown 1s ease both;
    }

    .hero-title {
        font-size: 2.2rem;
        font-weight: 800;
        line-height: 1.2;
        margin-bottom: 1.75rem;
        letter-spacing: -0.5px;
    }

    .title-line {
        font-size: 1.3rem;
        font-weight: 500;
        display: block;
        color: var(--text-secondary);
        margin-bottom: 0.75rem;
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
    }

    .title-name {
        font-size: 2.5rem;
        font-weight: 900;
        margin: 0.75rem 0;
        background: var(--gradient-4);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        text-shadow: 0 0 25px rgba(0, 245, 255, 0.6), 0 0 35px rgba(123, 44, 191, 0.3);
        animation: textGlow 2s ease-in-out infinite;
        letter-spacing: -1px;
    }

    .hero-description {
        font-size: 1.15rem;
        margin-bottom: 2.5rem;
        padding: 0 1.5rem;
        line-height: 1.7;
        color: var(--text-secondary);
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.1);
        background: rgba(10, 10, 15, 0.7);
        border-radius: var(--border-radius-md);
        padding: 1.5rem;
        border: 1px solid rgba(0, 245, 255, 0.15);
        box-shadow: 0 0 20px rgba(0, 245, 255, 0.15);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
        margin-top: 1.5rem;
    }

    .btn {
        min-width: 240px;
        padding: 1.2rem 2.4rem;
        font-size: 1.1rem;
        font-weight: 700;
        border-radius: 50px;
        transition: all var(--transition-normal);
        position: relative;
        overflow: hidden;
        text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

    .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: var(--gradient-4);
        color: var(--text-primary);
        box-shadow: 0 0 25px rgba(0, 245, 255, 0.5), 0 4px 20px rgba(0, 0, 0, 0.4);
        border: 1px solid rgba(0, 245, 255, 0.3);
    }

    .btn-primary:hover {
        transform: translateY(-4px);
        box-shadow: 0 0 40px rgba(0, 245, 255, 0.8), 0 6px 25px rgba(0, 0, 0, 0.5);
    }

    .btn-secondary {
        background: transparent;
        color: var(--neon-blue);
        border: 2px solid var(--neon-blue);
        box-shadow: 0 0 15px rgba(0, 245, 255, 0.3), 0 4px 20px rgba(0, 0, 0, 0.4);
    }

    .btn-secondary:hover {
        background: rgba(0, 245, 255, 0.15);
        transform: translateY(-4px);
        box-shadow: 0 0 30px rgba(0, 245, 255, 0.6), 0 6px 25px rgba(0, 0, 0, 0.5);
        border-color: rgba(0, 245, 255, 0.8);
    }

    .btn-icon {
        width: 22px;
        height: 22px;
        transition: transform var(--transition-normal);
        stroke-width: 2.5;
    }

    .btn:hover .btn-icon {
        transform: translateX(8px) rotate(90deg);
    }

    /* 音乐播放器手机端优化 */
    .music-player {
        padding: 1.25rem;
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }

    .player-container {
        padding: 2rem;
        background: rgba(10, 10, 15, 0.9);
        border-radius: var(--border-radius-lg);
        border: 1px solid rgba(0, 245, 255, 0.2);
        box-shadow: 0 0 30px rgba(0, 245, 255, 0.3), 0 4px 20px rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(20px);
        transition: all 0.3s ease;
    }

    .player-container:hover {
        transform: translateY(-5px);
        box-shadow: 0 0 40px rgba(0, 245, 255, 0.5), 0 6px 25px rgba(0, 0, 0, 0.5);
    }

    .vinyl {
        width: 180px;
        height: 180px;
        margin-bottom: 1.5rem;
    }

    .vinyl-spinner {
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, #111 0%, #333 60%, #111 100%);
        border-radius: 50%;
        position: relative;
        overflow: hidden;
        animation: rotate 6s linear infinite;
        box-shadow: 0 0 25px rgba(0, 0, 0, 0.6), 0 0 15px rgba(0, 245, 255, 0.2);
    }

    .vinyl-center {
        width: 40px;
        height: 40px;
        background: var(--gradient-4);
        border-radius: 50%;
        z-index: 2;
        box-shadow: 0 0 15px rgba(0, 245, 255, 0.8), inset 0 0 8px rgba(0, 0, 0, 0.5);
        border: 2px solid rgba(255, 255, 255, 0.2);
    }

    /* 音频波形动画 */
    .audio-wave {
        height: 70px;
        gap: 0.3rem;
        margin-bottom: 1.5rem;
        padding: 0 1rem;
        background: rgba(0, 245, 255, 0.05);
        border-radius: 35px;
        border: 1px solid rgba(0, 245, 255, 0.2);
        box-shadow: inset 0 0 15px rgba(0, 245, 255, 0.1);
    }

    .wave-bar {
        width: 4px;
        background: var(--gradient-4);
        border-radius: 2px;
        animation: wave 1.2s ease-in-out infinite;
        box-shadow: 0 0 10px var(--neon-blue);
        transition: all 0.3s ease;
    }

    .wave-bar:nth-child(1) { animation-delay: 0s; height: 20px; }
    .wave-bar:nth-child(2) { animation-delay: 0.08s; height: 30px; }
    .wave-bar:nth-child(3) { animation-delay: 0.16s; height: 40px; }
    .wave-bar:nth-child(4) { animation-delay: 0.24s; height: 50px; }
    .wave-bar:nth-child(5) { animation-delay: 0.32s; height: 60px; }
    .wave-bar:nth-child(6) { animation-delay: 0.4s; height: 50px; }
    .wave-bar:nth-child(7) { animation-delay: 0.48s; height: 40px; }
    .wave-bar:nth-child(8) { animation-delay: 0.56s; height: 30px; }
    .wave-bar:nth-child(9) { animation-delay: 0.64s; height: 20px; }
    .wave-bar:nth-child(10) { animation-delay: 0.72s; height: 30px; }

    .song-title {
        font-size: 1.2rem;
        font-weight: bold;
        color: var(--neon-blue);
        text-shadow: 0 0 15px var(--neon-blue);
        text-align: center;
        margin-bottom: 1.25rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        padding: 0.8rem 1.25rem;
        background: rgba(0, 245, 255, 0.1);
        border-radius: 20px;
        border: 1px solid rgba(0, 245, 255, 0.2);
        box-shadow: 0 0 15px rgba(0, 245, 255, 0.2);
    }

    .time-display {
        text-align: center;
        color: var(--text-secondary);
        font-size: 0.9rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 1rem;
        font-family: var(--font-mono);
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
    }

    .song-progress {
        height: 6px;
        background: var(--gradient-4);
        border-radius: 3px;
        box-shadow: 0 0 15px var(--neon-blue);
        width: 0;
        transition: width 0.1s ease;
        position: relative;
    }

    .song-progress::after {
        content: '';
        position: absolute;
        top: 50%;
        right: -6px;
        transform: translateY(-50%);
        width: 12px;
        height: 12px;
        background: var(--neon-blue);
        border-radius: 50%;
        box-shadow: 0 0 10px var(--neon-blue);
    }

    .song-progress-container::before {
        content: '';
        position: absolute;
        top: 0;
        left: 1rem;
        right: 1rem;
        height: 6px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 3px;
        z-index: -1;
        box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.5);
    }

    .player-controls {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 1.75rem;
        padding: 1.5rem;
        background: rgba(0, 245, 255, 0.05);
        border-radius: var(--border-radius-lg);
        border: 1px solid rgba(0, 245, 255, 0.2);
        box-shadow: inset 0 0 15px rgba(0, 245, 255, 0.1);
        margin-top: 1.25rem;
    }

    .control-button {
        width: 55px;
        height: 55px;
        background: rgba(0, 245, 255, 0.15);
        border: 1px solid var(--neon-blue);
        border-radius: 50%;
        color: var(--neon-blue);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 0 15px rgba(0, 245, 255, 0.4);
        touch-action: manipulation;
    }

    .control-button:hover {
        background: var(--neon-blue);
        color: var(--background-dark);
        box-shadow: 0 0 25px var(--neon-blue);
        transform: scale(1.1);
    }

    .control-button.play-button {
        width: 75px;
        height: 75px;
        background: rgba(0, 245, 255, 0.25);
        border: 2px solid var(--neon-blue);
        box-shadow: 0 0 20px rgba(0, 245, 255, 0.6);
    }

    .control-button.play-button:hover {
        background: var(--neon-blue);
        box-shadow: 0 0 30px var(--neon-blue);
        transform: scale(1.15);
    }

    .control-button svg {
        width: 24px;
        height: 24px;
        stroke: currentColor;
        stroke-width: 2;
        fill: none;
        transition: transform 0.3s ease;
    }

    .control-button:hover svg {
        transform: scale(1.1);
    }

    .control-button.play-button svg {
        width: 28px;
        height: 28px;
    }

    .section-title {
        font-size: 2.2rem;
        text-align: center;
        margin-bottom: 1.5rem;
        background: var(--gradient-4);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        text-shadow: 0 0 20px rgba(0, 245, 255, 0.6);
        font-weight: 800;
        letter-spacing: -1px;
    }

    .title-underline {
        width: 90px;
        height: 4px;
        background: var(--gradient-4);
        margin: 0 auto 3.5rem;
        border-radius: 2px;
        box-shadow: 0 0 20px var(--neon-blue);
    }

    /* 关于部分手机端优化 */
    .about-content {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .about-intro {
        font-size: 1.1rem;
        line-height: 1.8;
        color: var(--text-secondary);
        margin-bottom: 2rem;
        padding: 2rem;
        background: rgba(10, 10, 15, 0.8);
        border-radius: var(--border-radius-lg);
        border: 1px solid rgba(0, 245, 255, 0.2);
        box-shadow: 0 0 30px rgba(0, 245, 255, 0.15), inset 0 0 30px rgba(0, 245, 255, 0.05);
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.1);
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 2.5rem;
    }

    .stat-item {
        padding: 2rem;
        text-align: center;
        background: rgba(10, 10, 15, 0.8);
        border-radius: var(--border-radius-lg);
        border: 1px solid rgba(0, 245, 255, 0.2);
        transition: all 0.4s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        position: relative;
        overflow: hidden;
    }

    .stat-item::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: linear-gradient(45deg, transparent, rgba(0, 245, 255, 0.05), transparent);
        transform: rotate(45deg);
        transition: left 0.6s ease;
        left: -100%;
    }

    .stat-item:hover::before {
        left: 100%;
    }

    .stat-item:hover {
        transform: translateY(-8px) scale(1.02);
        box-shadow: 0 0 40px rgba(0, 245, 255, 0.4), 0 6px 25px rgba(0, 0, 0, 0.5);
        border-color: var(--neon-blue);
    }

    .stat-number {
        font-size: 2.8rem;
        font-weight: 800;
        background: var(--gradient-4);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 0.8rem;
        text-shadow: 0 0 20px rgba(0, 245, 255, 0.5);
    }

    .stat-label {
        color: var(--text-secondary);
        font-size: 1.1rem;
        font-weight: 500;
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
    }

    .code-block {
        margin: 0 auto;
        max-width: 400px;
        transform: rotateY(0deg) rotateX(0deg);
    }

    .code-block:hover {
        transform: rotateY(0deg) rotateX(0deg) translateY(-8px);
    }

    /* 技能部分手机端优化 */
    .skills-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .skill-card {
        background: rgba(10, 10, 15, 0.8);
        border-radius: var(--border-radius-lg);
        padding: 2.5rem;
        border: 1px solid rgba(0, 245, 255, 0.2);
        transition: all 0.4s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        transform-style: preserve-3d;
        transform: rotateY(0deg) rotateX(0deg);
    }

    .skill-card:hover {
        transform: translateY(-10px) rotateY(5deg) rotateX(5deg) scale(1.02);
        box-shadow: 0 0 40px rgba(0, 245, 255, 0.4), 0 6px 25px rgba(0, 0, 0, 0.5);
        border-color: var(--neon-blue);
    }

    .skill-icon {
        width: 70px;
        height: 70px;
        margin-bottom: 1.75rem;
    }

    .skill-title {
        font-size: 1.4rem;
        font-weight: 700;
        margin-bottom: 1rem;
        color: var(--text-primary);
        text-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
    }

    .skill-description {
        color: var(--text-secondary);
        margin-bottom: 2rem;
        font-size: 1.05rem;
        line-height: 1.7;
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.1);
    }

    /* 项目部分手机端优化 */
    .projects-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .project-card {
        background: rgba(10, 10, 15, 0.8);
        border-radius: var(--border-radius-lg);
        overflow: hidden;
        border: 1px solid rgba(0, 245, 255, 0.2);
        transition: all 0.4s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        transform-style: preserve-3d;
        transform: rotateY(0deg) rotateX(0deg);
    }

    .project-card:hover {
        transform: translateY(-12px) rotateY(5deg) rotateX(5deg) scale(1.02);
        box-shadow: 0 0 40px rgba(0, 245, 255, 0.4), 0 6px 25px rgba(0, 0, 0, 0.5);
        border-color: var(--neon-blue);
    }

    .project-image {
        height: 220px;
        background: linear-gradient(135deg, rgba(0, 245, 255, 0.3) 0%, rgba(123, 44, 191, 0.3) 100%);
        border-bottom: 1px solid rgba(0, 245, 255, 0.2);
    }

    .project-info {
        padding: 2.25rem;
    }

    .project-title {
        font-size: 1.6rem;
        font-weight: 700;
        margin-bottom: 1.25rem;
        color: var(--text-primary);
        text-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
    }

    .project-description {
        color: var(--text-secondary);
        margin-bottom: 2rem;
        line-height: 1.7;
        font-size: 1.05rem;
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.1);
    }

    .project-tech {
        gap: 0.75rem;
        padding: 0 1.5rem;
    }

    .project-tech span {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    /* 联系部分手机端优化 */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .contact-item {
        flex-direction: column;
        gap: 1.25rem;
        padding: 2rem;
        background: rgba(10, 10, 15, 0.8);
        border-radius: var(--border-radius-lg);
        border: 1px solid rgba(0, 245, 255, 0.2);
        text-align: center;
        transition: all 0.4s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        position: relative;
        overflow: hidden;
    }

    .contact-item::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: linear-gradient(45deg, transparent, rgba(0, 245, 255, 0.05), transparent);
        transform: rotate(45deg);
        transition: left 0.6s ease;
        left: -100%;
    }

    .contact-item:hover::before {
        left: 100%;
    }

    .contact-item:hover {
        transform: translateY(-8px);
        box-shadow: 0 0 40px rgba(0, 245, 255, 0.4), 0 6px 25px rgba(0, 0, 0, 0.5);
        border-color: var(--neon-blue);
    }

    .contact-icon {
        width: 60px;
        height: 60px;
        margin: 0 auto;
        background: rgba(0, 245, 255, 0.15);
        border-radius: 15px;
        color: var(--neon-blue);
        border: 1px solid rgba(0, 245, 255, 0.3);
        box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
    }

    .contact-details h4 {
        font-size: 1.2rem;
        font-weight: 700;
        margin-bottom: 0.75rem;
        color: var(--text-primary);
        text-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
    }

    .contact-details p {
        color: var(--text-secondary);
        font-size: 1.05rem;
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.1);
    }

    .contact-form {
        padding: 2.5rem;
        background: rgba(10, 10, 15, 0.8);
        border-radius: var(--border-radius-lg);
        border: 1px solid rgba(0, 245, 255, 0.2);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

    .form-group input,
    .form-group textarea {
        width: 100%;
        padding: 1.25rem 1.5rem;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(0, 245, 255, 0.2);
        border-radius: var(--border-radius-md);
        color: var(--text-primary);
        font-size: 1.1rem;
        transition: all 0.4s ease;
        box-shadow: inset 0 0 20px rgba(0, 245, 255, 0.05);
    }

    .form-group input:focus,
    .form-group textarea:focus {
        outline: none;
        border-color: var(--neon-blue);
        box-shadow: 0 0 30px rgba(0, 245, 255, 0.4), inset 0 0 20px rgba(0, 245, 255, 0.1);
        transform: translateY(-2px);
    }

    /* 页脚手机端优化 */
    .footer-content {
        padding: 0 1.5rem;
        gap: 2.5rem;
    }

    .footer-logo {
        font-size: 1.6rem;
        font-weight: 800;
        letter-spacing: 2px;
        background: var(--gradient-4);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        text-shadow: 0 0 20px rgba(0, 245, 255, 0.4);
    }

    .footer-social {
        gap: 1.75rem;
    }

    .social-link {
        width: 50px;
        height: 50px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(0, 245, 255, 0.15);
        border: 1px solid rgba(0, 245, 255, 0.3);
        border-radius: 50%;
        color: var(--neon-blue);
        transition: all 0.4s ease;
        box-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
    }

    .social-link:hover {
        background: var(--neon-blue);
        color: var(--background-dark);
        box-shadow: 0 0 30px var(--neon-blue);
        transform: translateY(-8px) scale(1.1);
    }

    .footer-copyright {
        color: var(--text-secondary);
        font-size: 1rem;
        text-align: center;
        text-shadow: 0 0 10px rgba(0, 245, 255, 0.1);
    }

    .footer-copyright::before {
        width: 80px;
        height: 2px;
        background: var(--gradient-4);
        margin: 0 auto 1.25rem;
        border-radius: 1px;
        box-shadow: 0 0 15px var(--neon-blue);
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 5rem 1rem 2rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }

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

    .hero-description {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
        min-width: 200px;
        justify-content: center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 0 1rem;
    }

    /* 音乐播放器小屏幕优化 */
    .music-player {
        padding: 0.75rem;
    }

    .player-container {
        padding: 1.25rem;
    }

    .vinyl {
        width: 140px;
        height: 140px;
        margin-bottom: 1rem;
    }

    .vinyl-center {
        width: 35px;
        height: 35px;
    }

    .audio-wave {
        height: 40px;
        gap: 0.2rem;
    }

    .wave-bar {
        width: 2.5px;
    }

    .song-title {
        font-size: 1rem;
    }

    .player-controls {
        gap: 1rem;
    }

    .control-button {
        width: 35px;
        height: 35px;
    }

    .control-button.play-button {
        width: 45px;
        height: 45px;
    }

    .control-button svg {
        width: 16px;
        height: 16px;
    }

    .control-button.play-button svg {
        width: 18px;
        height: 18px;
    }

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

    .stat-item {
        flex-direction: column;
        gap: 0.5rem;
        padding: 1rem;
    }

    .skill-card {
        padding: 1.5rem;
    }

    .project-card {
        margin-bottom: 2rem;
    }

    .project-info {
        padding: 1.5rem;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }

    .form-group input,
    .form-group textarea {
        padding: 1rem;
    }

    .footer-content {
        padding: 0 1rem;
    }

    .footer-social {
        gap: 1rem;
    }

    .social-link {
        width: 40px;
        height: 40px;
    }
}

/* ===================================
   滚动动画
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   动画关键帧
   =================================== */
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes glow {
    0% { box-shadow: 0 0 10px rgba(0, 245, 255, 0.5); }
    50% { box-shadow: 0 0 30px rgba(0, 245, 255, 0.8), 0 0 40px rgba(123, 44, 191, 0.5); }
    100% { box-shadow: 0 0 10px rgba(0, 245, 255, 0.5); }
}

@keyframes textGlow {
    0% { text-shadow: 0 0 20px rgba(0, 245, 255, 0.5); }
    50% { text-shadow: 0 0 30px rgba(0, 245, 255, 0.8), 0 0 40px rgba(123, 44, 191, 0.5); }
    100% { text-shadow: 0 0 20px rgba(0, 245, 255, 0.5); }
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===================================
   加载动画
   =================================== */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.loading {
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.05) 0%, 
        rgba(255, 255, 255, 0.1) 50%, 
        rgba(255, 255, 255, 0.05) 100%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* ===================================
   自定义滚动条
   =================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(10, 10, 15, 0.8);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-1);
    border-radius: 4px;
    box-shadow: var(--shadow-glow);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-2);
    box-shadow: var(--shadow-glow-purple);
}