/* 现代化主样式文件 */

/* CSS Reset & 基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS 自定义属性 (设计系统) */
:root {
    /* 色彩系统 - 现代化升级 */
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-secondary: #a855f7;
    --color-accent: #14b8a6;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-pink: #ec4899;
    --color-orange: #f97316;
    --color-emerald: #10b981;
    
    /* 中性色 */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* 背景色 - 更丰富的层次 */
    --bg-primary: #0a0f1c;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --bg-surface: rgba(255, 255, 255, 0.03);
    --bg-glass: rgba(255, 255, 255, 0.08);
    --bg-glass-strong: rgba(255, 255, 255, 0.12);
    --bg-card: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    
    /* 渐变色 - 更现代的配色 */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #f97316 50%, #ec4899 100%);
    --gradient-accent: linear-gradient(135deg, #14b8a6 0%, #06b6d4 50%, #3b82f6 100%);
    --gradient-warm: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #dc2626 100%);
    --gradient-cool: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #c084fc 100%);
    --gradient-dark: linear-gradient(135deg, #374151 0%, #1f2937 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-card-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-card-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-card-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* 字体系统 */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    /* 字体大小 */
    --text-xs: 0.75rem;     /* 12px */
    --text-sm: 0.875rem;    /* 14px */
    --text-base: 1rem;      /* 16px */
    --text-lg: 1.125rem;    /* 18px */
    --text-xl: 1.25rem;     /* 20px */
    --text-2xl: 1.5rem;     /* 24px */
    --text-3xl: 1.875rem;   /* 30px */
    --text-4xl: 2.25rem;    /* 36px */
    --text-5xl: 3rem;       /* 48px */
    --text-6xl: 3.75rem;    /* 60px */
    --text-7xl: 4.5rem;     /* 72px */
    
    /* 字体权重 */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    
    /* 间距系统 */
    --space-1: 0.25rem;     /* 4px */
    --space-2: 0.5rem;      /* 8px */
    --space-3: 0.75rem;     /* 12px */
    --space-4: 1rem;        /* 16px */
    --space-5: 1.25rem;     /* 20px */
    --space-6: 1.5rem;      /* 24px */
    --space-8: 2rem;        /* 32px */
    --space-10: 2.5rem;     /* 40px */
    --space-12: 3rem;       /* 48px */
    --space-16: 4rem;       /* 64px */
    --space-20: 5rem;       /* 80px */
    --space-24: 6rem;       /* 96px */
    --space-32: 8rem;       /* 128px */
    
    /* 边框半径 */
    --radius-sm: 0.25rem;   /* 4px */
    --radius: 0.5rem;       /* 8px */
    --radius-md: 0.75rem;   /* 12px */
    --radius-lg: 1rem;      /* 16px */
    --radius-xl: 1.5rem;    /* 24px */
    --radius-2xl: 2rem;     /* 32px */
    --radius-full: 9999px;
    
    /* 阴影系统 - 增强视觉层次 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.08);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.15), 0 1px 2px -1px rgb(0 0 0 / 0.15);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.15), 0 2px 4px -2px rgb(0 0 0 / 0.15);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.2), 0 4px 6px -4px rgb(0 0 0 / 0.2);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.25), 0 8px 10px -6px rgb(0 0 0 / 0.25);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.35);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.4);
    --shadow-colored: 0 20px 40px -12px rgba(99, 102, 241, 0.25);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 16px rgba(0, 0, 0, 0.08);
    
    /* 动画 */
    --transition-fast: 150ms ease-in-out;
    --transition: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Z-index 层级 */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* 基础样式 */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 80px;
}

/* 平滑滚动增强 */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
    
    * {
        scroll-behavior: smooth;
    }
}

body {
    font-family: var(--font-sans);
    font-weight: var(--font-normal);
    line-height: 1.6;
    color: var(--color-white);
    background: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    opacity: 0;
    animation: fadeIn 0.6s ease-out 0.2s forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--space-6);
    padding-right: var(--space-6);
}

@media (max-width: 640px) {
    .container {
        padding-left: var(--space-4);
        padding-right: var(--space-4);
    }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    min-height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-bold);
    font-size: var(--text-lg);
    color: var(--color-white);
    text-decoration: none;
}

.brand-icon {
    font-size: var(--text-2xl);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    color: var(--color-gray-300);
    text-decoration: none;
    font-weight: var(--font-medium);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.nav-link {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.1));
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

.nav-social {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--color-gray-400);
    border-radius: var(--radius);
    transition: var(--transition);
}

.social-link:hover {
    color: var(--color-white);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.1));
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    backdrop-filter: blur(8px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

/* 英雄区 */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 70px;
    background: var(--bg-primary);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 10%;
    width: 300px;
    height: 300px;
    background: var(--gradient-primary);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: morphing 8s ease-in-out infinite;
    pointer-events: none;
    z-index: 1;
}

.hero-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    position: relative;
    z-index: 2;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-20);
    align-items: center;
    min-height: 80vh;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.4);
    border-radius: var(--radius-full);
    color: var(--color-primary-light);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    margin-bottom: var(--space-6);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
    animation: fadeInScale 0.6s ease-out;
}

.hero-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: shimmer 2s ease-in-out infinite;
}

.hero-badge:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
    border-color: rgba(99, 102, 241, 0.6);
}

.badge-icon {
    font-size: var(--text-base);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-extrabold);
    line-height: 1.1;
    margin-bottom: var(--space-6);
    color: var(--color-white);
}

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

.title-separator {
    color: var(--color-gray-500);
    margin: 0 var(--space-3);
}

.title-sub {
    color: var(--color-white);
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-gray-300);
    margin-bottom: var(--space-4);
    font-weight: var(--font-medium);
}

.gradient-text {
    background: var(--gradient-accent);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: var(--font-semibold);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-8);
}

.hero-description strong {
    color: var(--color-primary-light);
    font-weight: var(--font-bold);
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: var(--font-semibold);
    font-size: var(--text-base);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

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

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.btn-icon {
    transition: var(--transition);
}

.btn-primary:hover .btn-icon {
    transform: rotate(45deg) scale(1.1);
}

.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::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 0.6s;
}

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

.hero-stats {
    display: flex;
    gap: var(--space-8);
}

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

.stat-number {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-white);
    display: block;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    margin-top: var(--space-1);
}

/* 英雄区右侧卡片 */
.hero-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.feature-card {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.5;
}

.feature-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
    border-color: rgba(255, 255, 255, 0.2);
    animation: glow 2s ease-in-out infinite;
}

.feature-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover .card-icon {
    animation: bounce 1s ease-in-out;
}

.card-primary::before {
    background: var(--gradient-primary);
}

.card-secondary::before {
    background: var(--gradient-secondary);
}

.card-accent::before {
    background: var(--gradient-accent);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.card-icon {
    font-size: var(--text-2xl);
}

.card-header h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-white);
}

.feature-card p {
    color: var(--color-gray-300);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-gray-300);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
}

.card-progress {
    margin-top: var(--space-4);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-2);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-secondary);
    border-radius: var(--radius-full);
    transition: var(--transition-slow);
}

.progress-text {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
}

.card-metrics {
    margin-top: var(--space-4);
}

.metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.metric-value {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
}

.metric-label {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-white);
}

/* 英雄区装饰 */
.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
}

.decoration-grid {
    position: absolute;
    top: 10%;
    right: 10%;
    width: 300px;
    height: 300px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
    opacity: 0.05;
}

.grid-item {
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    animation: float 6s ease-in-out infinite;
}

.grid-item:nth-child(1) { animation-delay: 0s; }
.grid-item:nth-child(2) { animation-delay: 1.5s; }
.grid-item:nth-child(3) { animation-delay: 3s; }
.grid-item:nth-child(4) { animation-delay: 4.5s; }

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-elements::before {
    content: '';
    position: absolute;
    top: 20%;
    right: 20%;
    width: 100px;
    height: 100px;
    background: var(--gradient-accent);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    opacity: 0.1;
    animation: morphing 6s ease-in-out infinite reverse;
}

.floating-elements::after {
    content: '';
    position: absolute;
    bottom: 30%;
    left: 10%;
    width: 60px;
    height: 60px;
    background: var(--gradient-warm);
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    opacity: 0.15;
    animation: morphing 4s ease-in-out infinite;
}

.float-element {
    position: absolute;
    font-size: var(--text-4xl);
    opacity: 0.1;
    animation: float 8s ease-in-out infinite;
}

.element-1 {
    top: 20%;
    left: 5%;
    animation-delay: 0s;
}

.element-2 {
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.element-3 {
    bottom: 30%;
    left: 15%;
    animation-delay: 4s;
}

.element-4 {
    top: 40%;
    right: 25%;
    animation-delay: 6s;
}

/* 通用区块样式 */
.section {
    padding: var(--space-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-bold);
    color: var(--color-white);
    margin-bottom: var(--space-4);
    line-height: 1.2;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-400);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 动画 - 增强版 */
@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
    }
    50% {
        box-shadow: 0 0 30px rgba(99, 102, 241, 0.6), 0 0 40px rgba(168, 85, 247, 0.4);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -8px, 0);
    }
    70% {
        transform: translate3d(0, -4px, 0);
    }
    90% {
        transform: translate3d(0, -2px, 0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes morphing {
    0%, 100% {
        border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
        transform: rotate(0deg) scale(1);
    }
    25% {
        border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
        transform: rotate(90deg) scale(1.1);
    }
    50% {
        border-radius: 70% 30% 40% 60% / 40% 50% 60% 50%;
        transform: rotate(180deg) scale(1);
    }
    75% {
        border-radius: 40% 70% 60% 30% / 60% 40% 50% 70%;
        transform: rotate(270deg) scale(1.1);
    }
}

/* 页面加载动画 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 页面元素进入动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll.delay-1 {
    transition-delay: 0.1s;
}

.animate-on-scroll.delay-2 {
    transition-delay: 0.2s;
}

.animate-on-scroll.delay-3 {
    transition-delay: 0.3s;
}

/* 实用工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-light { font-weight: var(--font-light); }
.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

.pointer-events-none { pointer-events: none; }
.cursor-pointer { cursor: pointer; }

.select-none { user-select: none; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* 可访问性 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--color-gray-600);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-500);
}

/* 主题切换按钮样式 */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-gray-300);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
    color: var(--color-white);
}

.theme-toggle-track {
    position: relative;
    width: 32px;
    height: 18px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.theme-toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 14px;
    height: 14px;
    background: var(--color-white);
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.theme-icon {
    width: 10px;
    height: 10px;
    color: var(--color-gray-600);
    transition: var(--transition);
}

.theme-icon-light {
    opacity: 0;
    transform: scale(0.8);
}

.theme-icon-dark {
    opacity: 1;
    transform: scale(1);
}

/* 浅色主题状态 */
.theme-toggle.light-theme .theme-toggle-track {
    background: var(--color-primary);
}

.theme-toggle.light-theme .theme-toggle-thumb {
    transform: translateX(14px);
    background: var(--color-white);
}

.theme-toggle.light-theme .theme-icon-light {
    opacity: 1;
    transform: scale(1);
}

.theme-toggle.light-theme .theme-icon-dark {
    opacity: 0;
    transform: scale(0.8);
}

.theme-toggle-label {
    white-space: nowrap;
}

/* 浅色主题样式 */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --bg-surface: rgba(0, 0, 0, 0.03);
    --bg-glass: rgba(0, 0, 0, 0.05);
    --bg-glass-strong: rgba(0, 0, 0, 0.08);
    --bg-card: linear-gradient(145deg, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.02) 100%);
    
    --color-white: #1e293b;
    --color-gray-50: #0f172a;
    --color-gray-100: #1e293b;
    --color-gray-200: #334155;
    --color-gray-300: #475569;
    --color-gray-400: #64748b;
    --color-gray-500: #94a3b8;
    --color-gray-600: #cbd5e1;
    --color-gray-700: #e2e8f0;
    --color-gray-800: #f1f5f9;
    --color-gray-900: #f8fafc;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-colored: 0 20px 40px -12px rgba(99, 102, 241, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.08), 0 2px 16px rgba(0, 0, 0, 0.04);
}

/* 浅色主题下的特殊元素 */
[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.8);
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .hero-section::before {
    background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
}

[data-theme="light"] .projects-section {
    background: var(--bg-secondary);
}

[data-theme="light"] .contact-section {
    background: var(--bg-secondary);
}

[data-theme="light"] .theme-toggle {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
    color: var(--color-gray-600);
}

[data-theme="light"] .theme-toggle:hover {
    background: rgba(0, 0, 0, 0.1);
    border-color: rgba(0, 0, 0, 0.2);
    color: var(--color-gray-700);
}

/* 浅色主题下的微信弹窗 */
[data-theme="light"] .modal-overlay {
    background: rgba(0, 0, 0, 0.6);
}

[data-theme="light"] .modal-content {
    background: linear-gradient(145deg, rgba(255,255,255,0.95) 0%, rgba(248,250,252,0.9) 100%);
    border-color: rgba(0, 0, 0, 0.15);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 0 8px 32px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .modal-header {
    background: linear-gradient(180deg, rgba(0,0,0,0.03) 0%, transparent 100%);
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .modal-header h3 {
    color: var(--color-gray-800);
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .modal-close {
    background: rgba(0, 0, 0, 0.05);
    color: var(--color-gray-600);
}

[data-theme="light"] .modal-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--color-gray-800);
}

[data-theme="light"] .qrcode-tip {
    color: var(--color-gray-600);
}

[data-theme="light"] .wechat-id-container {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .wechat-id {
    color: var(--color-gray-600);
}

[data-theme="light"] .wechat-id span {
    color: var(--color-primary);
}

[data-theme="light"] .copy-btn {
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.2);
    color: var(--color-primary);
}

[data-theme="light"] .copy-btn:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

/* 移动端主题切换按钮 */
@media (max-width: 768px) {
    .theme-toggle {
        padding: var(--space-1) var(--space-2);
        font-size: var(--text-xs);
    }
    
    .theme-toggle-track {
        width: 28px;
        height: 16px;
    }
    
    .theme-toggle-thumb {
        width: 12px;
        height: 12px;
    }
    
    .theme-toggle.light-theme .theme-toggle-thumb {
        transform: translateX(12px);
    }
    
    .theme-icon {
        width: 8px;
        height: 8px;
    }
}

/* 微信二维码弹窗样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: var(--space-4);
    box-sizing: border-box;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-card);
    backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-2xl);
    padding: 0;
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.8) translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-2xl), var(--shadow-colored);
}

.modal-overlay.show .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6) var(--space-6) var(--space-4);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, transparent 100%);
}

.modal-header h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-white);
    margin: 0;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-gray-400);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    transform: scale(1.1);
}

.modal-body {
    padding: var(--space-6);
    text-align: center;
}

.wechat-qrcode {
    width: 100%;
    max-width: 280px;
    height: auto;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.wechat-qrcode:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.qrcode-tip {
    font-size: var(--text-base);
    color: var(--color-gray-300);
    margin-bottom: var(--space-3);
    line-height: 1.6;
}

.wechat-id-container {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-3) var(--space-4);
    min-width: 0;
    flex-wrap: wrap;
}

.wechat-id {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    margin: 0;
    flex: 1;
}

.wechat-id span {
    color: var(--color-primary-light);
    font-weight: var(--font-semibold);
    font-family: var(--font-mono);
}

/* 公众号中文名称不使用等宽字体，避免文字堆叠 */
.wechat-id span:not(#wechatNumber) {
    font-family: var(--font-sans);
    white-space: nowrap;
    word-break: keep-all;
    letter-spacing: 0.02em;
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius);
    color: var(--color-primary-light);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: var(--transition);
    min-width: auto;
}

.copy-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.5);
    transform: translateY(-1px);
}

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

.copy-btn svg {
    flex-shrink: 0;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .modal-content {
        width: 90%;
        max-width: 350px;
    }
    
    .wechat-qrcode {
        max-width: 260px;
    }
}

@media (max-width: 480px) {
    .modal-content {
        width: 95%;
        max-width: none;
        margin: var(--space-4);
    }
    
    .modal-header {
        padding: var(--space-4) var(--space-4) var(--space-3);
    }
    
    .modal-header h3 {
        font-size: var(--text-lg);
    }
    
    .modal-body {
        padding: var(--space-4);
    }
    
    .wechat-qrcode {
        max-width: 240px;
        border-radius: var(--radius);
    }
    
    .qrcode-tip {
        font-size: var(--text-sm);
    }
    
    .wechat-id-container {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-2);
        padding: var(--space-3);
    }
    
    .wechat-id {
        font-size: var(--text-xs);
        text-align: center;
    }
    
    .copy-btn {
        justify-content: center;
        padding: var(--space-2);
    }
    
    .modal-close {
        width: 36px;
        height: 36px;
        font-size: var(--text-lg);
    }
}

/* 公众号特色功能标签 */
.gongzh-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-3);
    justify-content: center;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.15) 0%, rgba(16, 185, 129, 0.1) 100%);
    border: 1px solid rgba(52, 211, 153, 0.3);
    border-radius: var(--radius-full);
    color: #34d399;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    backdrop-filter: blur(8px);
    transition: all 0.2s ease;
    white-space: nowrap;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.feature-tag:hover {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.25) 0%, rgba(16, 185, 129, 0.2) 100%);
    transform: translateY(-1px);
    border-color: rgba(52, 211, 153, 0.5);
    box-shadow: 0 4px 8px rgba(52, 211, 153, 0.2);
}

/* 公众号模态弹窗在浅色主题下的样式 */
[data-theme="light"] .gongzh-features .feature-tag {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.1) 0%, rgba(16, 185, 129, 0.08) 100%);
    border-color: rgba(52, 211, 153, 0.25);
    color: #059669;
}

[data-theme="light"] .gongzh-features .feature-tag:hover {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.2) 0%, rgba(16, 185, 129, 0.15) 100%);
    border-color: rgba(52, 211, 153, 0.4);
    box-shadow: 0 4px 8px rgba(52, 211, 153, 0.15);
}

/* 移动端公众号特色标签优化 */
@media (max-width: 768px) {
    .gongzh-features {
        flex-direction: column;
        align-items: center;
        gap: var(--space-2);
    }
    
    .feature-tag {
        padding: var(--space-1) var(--space-2);
        font-size: var(--text-xs);
        min-width: 120px;
        justify-content: center;
        white-space: nowrap;
        word-break: keep-all;
    }
}

/* 选择文本样式 */
::selection {
    background: rgba(37, 99, 235, 0.3);
    color: var(--color-white);
}

/* 焦点样式 */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}