:root {
    --primary-color: #99cfa9;
    --primary-light: #99cfa9;
    --text-color: #333;
    --text-light: #666;
    --text-white: #fff;
    --background-color: #f5f5f5;
    --white: #ffffff;
    --border-color: #e0e0e0;
    --base-size: 0.875rem;
}

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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', Arial, sans-serif;
    font-size: var(--base-size);
    color: var(--text-color);
    background-color: var(--background-color);
    min-height: 100vh;
    overflow-x: hidden;
}

.header {
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: 1.125rem;
    display: flex;
    align-items: center;
    position: relative;
}

.header::before {
    content: '';
    width: 0.5rem;
    height: 0.5rem;
    border-left: 0.125rem solid var(--text-white);
    border-bottom: 0.125rem solid var(--text-white);
    transform: rotate(45deg);
    margin-right: 0.75rem;
    cursor: pointer;
}

.header h1 {
    font-size: 1.125rem;
    font-weight: normal;
}

.main-content {
    padding: 1.25rem;
    padding-bottom: 0;
}

.main-content .logo {
    width: 100%;
    text-align: center;
    padding: 3rem 0;
}

.main-content .logo img {
    border: none;
    outline: none;
    width: 50%;
}

.submit-footer {
    margin: 0.625rem;
    box-sizing: border-box;
    margin-top: 1.25rem;
}

.submit-footer button {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
    background-color: var(--primary-color);
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s;
    outline: none;
}

.submit-footer button:active {
    transform: scale(0.98);
}