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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: url('2.png') center center / cover no-repeat fixed;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}


.container {
    width: 100%;
    max-width: 600px;
    z-index: 1;
    position: relative;
}

.header {
    text-align: center;
    margin-bottom: 50px;
    animation: fadeInDown 0.8s ease-out;
}

.title {
    font-size: 42px;
    font-weight: 700;
    color: #ff0000;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 18px;
    color: #000000;
    font-weight: 300;
}

.buttons-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 80px;
    margin-bottom: 40px;
}

.download-btn {
    display: flex;
    align-items: center;
    padding: 25px 30px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.8s ease-out;
    animation-fill-mode: both;
}

.download-btn:nth-child(1) {
    animation-delay: 0.1s;
}

.download-btn:nth-child(2) {
    animation-delay: 0.2s;
}

.download-btn:nth-child(3) {
    animation-delay: 0.3s;
}

.download-btn:nth-child(4) {
    animation-delay: 0.4s;
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

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

.download-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.download-btn:active {
    transform: translateY(-2px);
}

.btn-icon {
    font-size: 36px;
    margin-right: 20px;
    flex-shrink: 0;
}

.btn-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.btn-title {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    line-height: 1.2;
}

.btn-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.2;
}

.btn-arrow {
    font-size: 24px;
    color: #667eea;
    margin-left: 15px;
    transition: transform 0.3s;
    flex-shrink: 0;
}

.download-btn:hover .btn-arrow {
    transform: translateX(5px);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.btn-primary:hover .btn-title,
.btn-primary:hover .btn-desc {
    color: #ffffff;
}

.btn-primary:hover .btn-arrow {
    color: #ffffff;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.btn-secondary:hover .btn-title,
.btn-secondary:hover .btn-desc {
    color: #ffffff;
}

.btn-secondary:hover .btn-arrow {
    color: #ffffff;
}

.btn-tertiary:hover {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.btn-tertiary:hover .btn-title,
.btn-tertiary:hover .btn-desc {
    color: #ffffff;
}

.btn-tertiary:hover .btn-arrow {
    color: #ffffff;
}

.footer {
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    animation: fadeIn 1s ease-out 0.5s both;
}

.customer-service-link {
    color: #990000;
    text-decoration: underline;
    font-weight: 600;
    transition: all 0.3s;
}

.customer-service-link:hover {
    color: #770000;
    text-shadow: 0 0 10px rgba(153, 0, 0, 0.5);
    text-decoration: none;
}

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

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .title {
        font-size: 32px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .download-btn {
        padding: 20px 25px;
    }
    
    .btn-icon {
        font-size: 28px;
        margin-right: 15px;
    }
    
    .btn-title {
        font-size: 18px;
    }
    
    .btn-desc {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 28px;
    }
    
    .download-btn {
        padding: 18px 20px;
    }
    
    .btn-icon {
        font-size: 24px;
        margin-right: 12px;
    }
    
    .btn-title {
        font-size: 16px;
    }
    
    .btn-desc {
        font-size: 12px;
    }
    
    .btn-arrow {
        font-size: 20px;
        margin-left: 10px;
    }
}