* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    background-color: #e6f7ff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.welcome-text {
    font-size: 28px;
    color: #1890ff;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
    padding: 0 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.countdown {
    font-size: 18px;
    color: #666;
    margin-bottom: 50px;
    transition: color 0.3s ease;
}
/* 倒计时最后1秒高亮提醒 */
.countdown.highlight {
    color: #ff4d4f;
    font-weight: bold;
}
/* 调试表单：添加淡入动画 */
.debug-form-container {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    width: 320px;
    z-index: 100;
    animation: fadeIn 0.3s ease;
}
/* 淡入动画关键帧 */
@keyframes fadeIn {
    from { opacity: 0; transform: translate(-50%, -45%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}
.form-title {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}
.form-group {
    margin-bottom: 20px;
}
.form-label {
    display: block;
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
}
.form-input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
/* 输入框聚焦效果 */
.form-input:focus {
    outline: none;
    border-color: #1890ff;
    box-shadow: 0 0 0 3px rgba(24, 144, 255, 0.1);
}
.form-btn-group {
    display: flex;
    gap: 10px;
}
.form-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-confirm {
    background: #1890ff;
    color: #fff;
}
/* 提交按钮禁用状态 */
.btn-confirm:disabled {
    background: #8cc5ff;
    cursor: not-allowed;
}
.btn-confirm:hover:not(:disabled) {
    background: #096dd9;
}
.btn-cancel {
    background: #f5f5f5;
    color: #333;
}
.btn-cancel:hover {
    background: #e8e8e8;
}
/* 遮罩层：淡入淡出动画 */
.mask {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    z-index: 99;
    animation: maskFade 0.3s ease;
}
@keyframes maskFade {
    from { opacity: 0; }
    to { opacity: 1; }
}
/* 响应式优化：适配小屏幕 */
@media (max-width: 375px) {
    .debug-form-container {
        width: 90%;
        padding: 20px;
    }
    .welcome-text {
        font-size: 24px;
    }
    .countdown {
        font-size: 16px;
    }
}