/* CSS变量定义 */
:root {
    /* 颜色系统 */
    --primary-color: #00d4ff;
    --secondary-color: #ff6b6b;
    --accent-color: #4ecdc4;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #666666;
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-card: #2a2a2a;
    --border-color: #333333;
    --gradient-primary: linear-gradient(135deg, #00d4ff, #4ecdc4);
    --gradient-secondary: linear-gradient(135deg, #ff6b6b, #ffa726);
    
    /* 字体 */
    --font-primary: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* 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;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
    
    /* 动画 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 背景动画Canvas */
#background-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    opacity: 0.8;
}

/* 页面渐变遮罩 */
.page-fade {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: 9999;
    opacity: 1;
    transition: opacity 1s ease-in-out;
    pointer-events: none;
}

.page-fade.fade-out {
    opacity: 0;
}

.page-fade.fade-in {
    opacity: 1;
}

/* 翻页渐变效果 - 参考Amaterasu.ai */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.page-transition.active {
    opacity: 1;
    visibility: visible;
}

.transition-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.page-transition.active .transition-overlay {
    transform: scaleX(1);
}

.transition-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-primary);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.transition-image {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
    animation: float 3s ease-in-out infinite;
}

.transition-icon {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.transition-text-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 90%;
}

.transition-text-line1 {
    font-size: 1.8rem;
    font-weight: 600;
    background: linear-gradient(45deg, #00d4ff, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite;
    text-align: center;
}

.transition-text-line2 {
    font-size: 1.4rem;
    font-weight: 500;
    background: linear-gradient(45deg, #ff6b6b, #ffa726);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite 0.5s;
    text-align: center;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* 英雄区域快捷链接样式 */
.hero-quick-links {
    margin-top: var(--spacing-2xl);
    display: flex;
    justify-content: center;
}

.hero-quick-links .quick-links-container {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
    display: flex;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.hero-quick-links .quick-link-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 12px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.hero-quick-links .quick-link-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.hero-quick-links .quick-link-btn:hover::before {
    left: 100%;
}

.hero-quick-links .quick-link-btn:hover {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
}

.hero-quick-links .quick-link-btn i {
    font-size: var(--font-size-md);
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.hero-quick-links .quick-link-btn:hover i {
    color: var(--bg-primary);
    transform: scale(1.1);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
    transition: var(--transition-normal);
}

.logo-icon:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.logo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}


.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo .logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
}

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

.nav-social {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
    transition: var(--transition-normal);
}

.nav-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.nav-icon-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.social-link {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    transition: var(--transition-fast);
}

.social-link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* 英雄区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    padding: 0 var(--spacing-lg);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.title-line {
    display: block;
    animation: fadeInUp 1s ease forwards;
    opacity: 0;
}

.hero-title-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 15px;
    vertical-align: middle;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    transition: var(--transition-normal);
    display: inline-block;
}

.hero-title-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
}

.title-line:nth-child(2) {
    animation-delay: 0.3s;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    min-height: 2rem;
}

.hero-tagline {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin: var(--spacing-xl) 0;
    font-style: italic;
    opacity: 0.9;
}

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

.cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-3xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.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: var(--transition-slow);
}

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

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-2xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

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

.scroll-arrow {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
}

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

/* 通用区域样式 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

/* 技能展示区域 */
.skills-showcase {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.skill-item {
    background: var(--bg-card);
    padding: var(--spacing-2xl);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.skill-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.skill-item.featured {
    grid-column: span 2;
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border: none;
}

.skill-item.featured:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.3);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.skill-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.skill-item.featured .skill-title {
    color: var(--bg-primary);
}

.skill-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.skill-item.featured .skill-description {
    color: rgba(255, 255, 255, 0.9);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.tool-category {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.tool-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.category-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.tool-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.tool-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-normal);
}

.tool-btn:hover {
    background: var(--primary-color);
    color: var(--bg-primary);
    transform: translateX(5px);
}

.tool-btn i {
    font-size: var(--font-size-lg);
    width: 20px;
    text-align: center;
}

/* 项目区域 */
.projects {
    padding: var(--spacing-3xl) 0;
}

/* 快捷链接栏 */
.quick-links-bar {
    margin: var(--spacing-xl) 0;
    display: flex;
    justify-content: center;
}

.quick-links-container {
    display: flex;
    gap: var(--spacing-md);
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.quick-link-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: var(--transition-normal);
    border: 1px solid transparent;
}

.quick-link-btn:hover {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.quick-link-btn i {
    font-size: var(--font-size-md);
    color: var(--primary-color);
    transition: var(--transition-normal);
}

.quick-link-btn:hover i {
    color: var(--bg-primary);
    transform: scale(1.1);
}

.project-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--bg-primary);
    border-color: var(--primary-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: var(--bg-card);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    position: relative;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.project-image {
    height: 200px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-links {
    display: flex;
    gap: var(--spacing-lg);
}

.project-link {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition-normal);
}

.project-link:hover {
    transform: scale(1.1);
    background: var(--accent-color);
}

.project-content {
    padding: var(--spacing-xl);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-primary);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: var(--font-size-xs);
    border: 1px solid var(--primary-color);
}

/* 文章区域 */
.articles {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.article-card {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.article-category {
    color: var(--primary-color);
}

.article-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.article-excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-primary);
    color: var(--accent-color);
    border-radius: 15px;
    font-size: var(--font-size-xs);
    border: 1px solid var(--accent-color);
}

.article-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-normal);
}

.article-link:hover {
    gap: var(--spacing-md);
}

/* 关于我区域 */
.about {
    padding: var(--spacing-3xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-description {
    margin-bottom: var(--spacing-2xl);
}

.about-description p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.skills-section,
.hobbies-section {
    margin-bottom: var(--spacing-2xl);
}

.skills-title,
.hobbies-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

.skill-item {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.skill-item.featured {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border: none;
}

.skill-item.featured:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.3);
}

.skill-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.skill-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.skill-item.featured .skill-name {
    color: var(--bg-primary);
}

.skill-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.skill-item.featured .skill-description {
    color: rgba(255, 255, 255, 0.9);
}


.skill-name {
    font-weight: 500;
    color: var(--text-primary);
}

.skill-bar {
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    width: 0;
    transition: width 2s ease;
}

.hobbies-grid {
    display: flex;
    gap: var(--spacing-xl);
}

.hobby-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.hobby-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.hobby-item i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
}

.hobby-item span {
    font-weight: 500;
    color: var(--text-primary);
}

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

.image-container {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
    position: relative;
    background: var(--gradient-primary);
    padding: 6px;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top; /* 调整图片位置，让头发露出来 */
    border-radius: 50%;
    transition: var(--transition-normal);
}

.profile-image:hover {
    transform: scale(1.05);
}

/* 页脚 */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.resume-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--gradient-primary);
    color: var(--bg-primary);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: var(--transition-normal);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-primary);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-2xl);
        transition: var(--transition-normal);
    }
    
    .links-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .link-card {
        padding: var(--spacing-xl);
    }
    
    .quick-links-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .quick-link-btn {
        justify-content: center;
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .hero-quick-links .quick-links-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .hero-quick-links .quick-link-btn {
        justify-content: center;
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .transition-image {
        width: 70px;
        height: 70px;
    }
    
    .transition-text-line1 {
        font-size: 1.4rem;
    }
    
    .transition-text-line2 {
        font-size: 1.1rem;
    }
    
    .logo-icon {
        width: 35px;
        height: 35px;
    }
    
    .image-container {
        width: 250px;
        height: 250px;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hobbies-grid {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .projects-grid,
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

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

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


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

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

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

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