:root {
    /* 修改这一处即可统一更换页面的主题色 */
    --theme-color: #69bff8;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 20px;
    background: #ffffff;
    color: #000000;
    font-family: Arial, "Microsoft YaHei", sans-serif;
    text-align: center;
}

.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.logo {
    display: block;
    width: auto;
    max-width: 120px;
    max-height: 120px;
    margin: 0 auto 10px;
    object-fit: contain;
}

h1 {
    margin: 0.67em 0;
    font-size: 2em;
}

.link-button {
    display: block;
    width: 100%;
    margin: 10px auto;
    padding: 12px 20px;
    border-radius: 8px;
    background: var(--theme-color);
    color: #000000;
    font-size: 14px;
    line-height: 1.45;
    text-decoration: none;
    overflow-wrap: anywhere;
    transition: filter 0.2s ease, transform 0.2s ease;
    word-break: break-all;
}

a.link-button:hover {
    filter: brightness(0.92);
}

a.link-button:active {
    transform: translateY(1px);
}

a.link-button:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--theme-color), white 50%);
    outline-offset: 3px;
}

.code {
    margin: 15px 0;
    padding: 10px;
    border-radius: 8px;
    background: #f9f9f9;
}

.code strong {
    font-size: 1.5em;
}

.qr-code {
    display: inline-block;
    margin: 20px auto;
    padding: 10px;
    border: 1px solid #dddddd;
    border-radius: 8px;
    background: #ffffff;
}

.qr-code img {
    display: block;
    width: 180px;
    height: 180px;
    object-fit: contain;
}

.qr-caption {
    margin: 5px 0 0;
    color: #666666;
    font-size: 12px ！important;
    text-align: center;
}

.footer {
    margin-top: 30px;
}

.copyright {
    margin-top: 30px;
    color: #999999;
    font-size: 12px;
    text-align: center;
}