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

body {
    background-color: #fff;
    color: #333;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 60px;
    margin-bottom: 40px;
}

/* 标题区域 */
.header {
    text-align: center;
    width: 100%;
    margin-bottom: 30px;
}

.main-title {
    color: #ff0000;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 8px;
    line-height: 1.2;
    letter-spacing: 0.5px;
}

.subtitle {
    color: #666;
    font-size: 1rem;
    font-weight: 400;
}

/* 输入区域 */
.input-section {
    width: 100%;
    margin-bottom: 20px;
}

.input-label {
    color: #333;
    display: block;
    text-align: center;
    margin-bottom: 12px;
    font-size: 1.2rem;
    font-weight: 600;
}

.input-container {
    position: relative;
    width: 100%;
    margin-bottom: 15px;
}

.input-field {
    width: 100%;
    padding: 18px 50px 18px 20px;
    background-color: #f9f9f9;
    border: 2px solid #ddd;
    border-radius: 25px;
    color: #333;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-field:focus {
    border-color: #999;
    background-color: #fff;
}

.input-field::placeholder {
    color: #888;
    font-weight: 600;
}

.toggle-password {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #777;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 5px;
    transition: color 0.2s;
}

.toggle-password:hover {
    color: #333;
}

/* 警告区域 - 初始隐藏 */
.warning {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #ff0000;
    margin-bottom: 25px;
}

.warning.visible {
    display: flex;
}

.warning-icon {
    font-size: 1.2rem;
}

.warning-text {
    font-weight: 500;
}

/* 登录按钮 */
.login-btn {
    width: 100%;
    background-color: #000;
    color: #fff;
    border: 2px solid #000;
    border-radius: 25px;
    padding: 18px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 30px;
}

.login-btn:hover {
    background-color: #333;
    border-color: #333;
}

/* 分割线 */
.divider {
    width: 100%;
    height: 1px;
    background-color: #eee;
    margin: 20px 0;
}

/* 双按钮区域 */
.dual-buttons {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 30px;
}

.dual-btn {
    background-color: transparent;
    color: #333;
    border: 2px solid #ddd;
    border-radius: 25px;
    padding: 16px 20px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    text-align: center;
    flex: 1;
}

.dual-btn:first-child {
    margin-right: 10px;
}

.dual-btn:last-child {
    margin-left: 10px;
}

.dual-btn:hover {
    background-color: #f5f5f5;
    border-color: #999;
}

/* 胶囊按钮 */
.capsule-btn {
    background-color: #ff0000;
    color: #fff;
    border: none;
    border-radius: 50px;
    padding: 20px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    margin-bottom: 30px;
    text-align: center;
    text-decoration: none;
    display: block;
}

.capsule-btn:hover {
    background-color: #ff3333;
    transform: translateY(-2px);
}

/* 响应式调整 */
@media (max-width: 600px) {
    .container {
        margin-top: 30px;
        padding: 0 10px;
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    /* 修改：手机端双按钮保持并排排列 */
    .dual-buttons {
        flex-direction: row;
        gap: 10px;
    }
    
    .dual-btn:first-child,
    .dual-btn:last-child {
        margin: 0;
    }
    
    /* 调整按钮文字大小和内边距以适应小屏幕 */
    .dual-btn {
        padding: 14px 10px;
        font-size: 0.95rem;
    }
    
    /* 调整输入框和按钮的圆角大小以保持一致性 */
    .input-field,
    .login-btn,
    .dual-btn {
        border-radius: 20px;
    }
    
    .capsule-btn {
        border-radius: 40px;
        padding: 18px 20px;
        font-size: 1rem;
    }
    
    body {
        padding: 15px;
    }
}

/* 针对超小屏幕的额外调整 */
@media (max-width: 400px) {
    .dual-btn {
        padding: 12px 8px;
        font-size: 0.9rem;
    }
    
    .main-title {
        font-size: 1.8rem;
    }
}