body {
    background-color: #B0E0E6;
    font-family: 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    min-height: 100vh;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* 优化粒子效果的性能 */
canvas {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: -moz-crisp-edges;
    image-rendering: pixelated;
}

/* 页面加载动画 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f0f4f8 0%, #e0eafc 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.8s ease-out;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 50px 20px;
    position: relative;
    z-index: 10;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out 0.5s forwards;
}

.logo {
    margin-bottom: 40px;
}

.logo img {
    max-width: 200px;
    height: auto;
}

h1 {
    font-size: 56px;
    color: #333;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    letter-spacing: -0.5px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out 1s forwards;
}

p {
    font-size: 20px;
    color: #555;
    margin-bottom: 30px;
    line-height: 1.7;
    font-weight: 300;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out 1.2s forwards;
}

.construction-icon {
    font-size: 140px;
    color: #667eea;
    margin-bottom: 40px;
    animation: pulse 2s infinite, fadeInUp 0.8s ease-out 0.8s forwards;
    filter: drop-shadow(0 10px 30px rgba(102, 126, 234, 0.2));
    opacity: 0;
    transform: translateY(20px);
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

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

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 悬停效果增强 */
* {
    transition: all 0.3s ease;
}

.contact-info {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    margin-top: 50px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 1.6s forwards;
}

.contact-info:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.15);
}

.contact-item {
    display: inline-block;
    margin: 0 30px;
    vertical-align: top;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    cursor: pointer;
}

.contact-item:hover {
    transform: translateY(-8px);
}

.contact-item i {
    font-size: 36px;
    color: #667eea;
    margin-bottom: 15px;
    display: block;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.contact-item:hover i {
    transform: scale(1.3) rotate(5deg);
    color: #764ba2;
    filter: drop-shadow(0 5px 15px rgba(102, 126, 234, 0.4));
}

.contact-item p {
    margin: 0;
    font-size: 18px;
    color: #555;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    z-index: 2;
}

.contact-item:hover p {
    color: #764ba2;
}

/* 添加圆形背景效果 */
.contact-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80px;
    height: 80px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

.contact-item:hover::before {
    transform: translate(-50%, -50%) scale(1.5);
}

/* 进度条样式 */
.progress-section {
    margin: 40px 0;
}

.progress-section h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.progress-bar-container {
    width: 100%;
    max-width: 500px;
    height: 12px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 30px;
    margin: 0 auto 20px;
    overflow: hidden;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.05);
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out 1.4s forwards;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-radius: 30px;
    width: 0%;
    transition: width 1s ease-in-out;
    box-shadow: 0 0 10px rgba(26, 188, 156, 0.4);
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

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

#progressText {
    font-size: 18px;
    color: rgba(51, 51, 51, 0.9);
    font-weight: 500;
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    z-index: 10;
    pointer-events: none;
    white-space: nowrap;
}

/* 版权信息样式 */
.copyright {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    color: rgba(51, 51, 51, 0.7);
    font-size: 14px;
    line-height: 1.6;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out 1.8s forwards;
}

.copyright p {
    margin: 5px 0;
    font-size: 14px;
    color: rgba(51, 51, 51, 0.7);
}

.copyright a {
    color: #777;
    text-decoration: none;
    transition: color 0.3s ease;
}

.copyright a:hover {
    color: #1abc9c;
    text-decoration: none;
}

@media (max-width: 768px) {
    .container {
        padding: 40px 20px;
    }
    
    h1 {
        font-size: 40px;
        text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }
    
    p {
        font-size: 18px;
        line-height: 1.6;
    }
    
    .construction-icon {
        font-size: 100px;
        margin-bottom: 30px;
    }
    
    .contact-info {
        padding: 30px 20px;
        margin-top: 40px;
    }
    
    .contact-item {
        display: block;
        margin: 25px 0;
    }
    
    .contact-item i {
        font-size: 32px;
    }
    
    .contact-item p {
        font-size: 16px;
    }
    
    .progress-bar-container {
        max-width: 100%;
    }
    
    .copyright {
        margin-top: 40px;
        padding: 20px 10px;
        font-size: 12px;
    }
    
    .copyright p {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 32px;
    }
    
    p {
        font-size: 16px;
    }
    
    .construction-icon {
        font-size: 80px;
    }
    
    .contact-info {
        padding: 25px 15px;
    }
    
    .contact-item i {
        font-size: 28px;
    }
    
    .contact-item p {
        font-size: 15px;
    }
}