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

:root {
    --primary-color: rgb(69, 121, 255);
    --primary-dark: rgb(58, 108, 236);
    --color-33: #333;
    --color-60: #606266;
    --color-90: #909399;
}

html,
body {
    font-family: 'Segoe UI', 'Helvetica Neue', 'Helvetica', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    margin: 0;
    font-size: 14px;
    background: #fff;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

/* ---------- 顶部标题 ---------- */
.intro {
    text-align: center;
    padding-top: 22px;
    padding-bottom: 32px;
}

.intro h1 {
    font-size: 64px;
    color: var(--color-33);
}

.intro strong {
    color: var(--color-90);
    font-weight: normal;
    font-size: 18px;
}

/* ---------- 平台图标（内嵌 SVG，通过 <use> 引用页首的 <symbol>） ---------- */
.icon {
    display: block;
    width: 80px;
    height: 80px;
}

/* ---------- 应用列表 ---------- */
.app-list {
    width: 100%;
    max-width: 880px;
    min-width: 320px;
    margin: 0 auto;
    padding-left: 10px;
    padding-right: 10px;
    color: var(--color-60);
    display: flex;
    flex-direction: column;
}

.app-list-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 30px;
    border-radius: 20px;
    transition: box-shadow 0.2s linear;
    margin-bottom: 40px;
}

.app-list-item:hover {
    box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.06);
}

.app-icon {
    display: block;
    margin-right: 20px;
    width: 82px;
    height: 82px;
    flex-shrink: 0;
}

.app-infos {
    flex: 1;
    min-width: 0;
}

.app-infos .heading {
    position: relative;
    padding-right: 120px;
}

.app-infos h2 {
    font-size: 24px;
    color: var(--color-33);
}

.app-infos .version {
    display: block;
    font-size: 16px;
    font-weight: 600;
    line-height: 22px;
    color: var(--color-33);
}

/* ---------- 下载按钮 ---------- */
.download-btn {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 20px;
    background-color: var(--primary-color);
    border: 0;
    border-radius: 30px;
    color: #fff;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.15s linear;
}

.download-btn:hover,
.download-btn:active {
    background-color: var(--primary-dark);
}

.download-btn svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
    flex-shrink: 0;
}

/* ---------- 移动端 ---------- */
@media only screen and (max-width: 767px) {
    .intro h1 {
        font-size: 32px;
        line-height: 1.8;
    }

    .intro strong {
        font-size: 16px;
    }

    .app-list-item {
        padding: 15px;
        margin-bottom: 20px;
    }

    .app-icon {
        margin-right: 10px;
    }

    .app-infos .heading {
        padding-right: 90px;
    }

    .download-btn {
        min-width: 80px;
        justify-content: center;
    }

    .download-btn span {
        display: none;
    }
}