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

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
}

/* 矢量背景容器 */
.vector-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

/* 内容容器 */
.container {
    text-align: center;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    max-width: 800px;
    width: 90%;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 60px; /* 为备案信息留出空间 */
    position: relative;
}

.container:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
    position: relative;
    display: inline-block;
}

h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #2ecc71);
    border-radius: 2px;
}

.description {
    font-size: 1.4rem;
    line-height: 1.8;
    color: #34495e;
    margin-bottom: 2.5rem;
}

.highlight {
    color: #3498db;
    font-weight: 600;
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(52, 152, 219, 0.2);
    z-index: -1;
}

.signature {
    margin-top: 1.5rem;
    font-style: italic;
    color: #7f8c8d;
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

/* 联系区域样式 */
.contact-section {
    margin: 2rem 0;
    padding: 1.5rem;
    border-radius: 15px;
    background: rgba(248, 249, 250, 0.7);
    border: 1px solid rgba(222, 226, 230, 0.5);
    transition: all 0.3s ease;
}

.contact-section:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: scale(1.02);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-title {
    font-size: 1.6rem;
    color: #2c3e50;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.contact-title i {
    color: #3498db;
    font-size: 1.8rem;
}

.email-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.email-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    color: #3498db;
    text-decoration: none;
    padding: 12px 25px;
    border-radius: 50px;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    transition: all 0.3s ease;
    font-weight: 500;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.2);
}

.email-link:hover {
    background: linear-gradient(135deg, #bbdefb 0%, #90caf9 100%);
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
    color: #1a73e8;
}

.email-link i {
    font-size: 1.4rem;
}

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: #7f8c8d;
    font-size: 1.3rem;
    padding: 10px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: rgba(127, 140, 141, 0.1);
    color: #3498db;
    transform: scale(1.1);
}

/* 备案信息样式 */
.footer {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    text-align: center;
    color: #7f8c8d;
    font-size: 0.9rem;
    padding: 10px 0;
}

.footer a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #2980b9;
    text-decoration: underline;
}

/* 装饰元素 */
.decoration {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    z-index: -2;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 2rem;
        width: 95%;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .description {
        font-size: 1.2rem;
    }
    
    .email-link {
        font-size: 1.1rem;
        padding: 10px 20px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    
    .description {
        font-size: 1rem;
    }
    
    .email-container {
        flex-direction: column;
        gap: 10px;
    }
    
    .footer {
        font-size: 0.8rem;
    }
}

/* 复制成功提示 */
.copy-success {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(46, 204, 113, 0.9);
    color: white;
    padding: 12px 25px;
    border-radius: 50px;
    font-weight: 500;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1000;
}

.copy-success.show {
    opacity: 1;
}