/* 变量 */
:root {
    --primary_color: #127988;
    --linear_bg: 109deg, #CCD538 12.71%, #44B07D 87.29%;
}

/* 默认值 */
* {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
}

body {
    overflow-y: auto;
    position: relative;
    height: fit-content;
}

ol,
ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: #333333;
}

input,
textarea {
    outline: none;
    border: none;
    resize: none;
}

img {
    width: 100%;
    vertical-align: middle;
}

/* 布局类名 */
.flex_start {
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.flex_end {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.flex_center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.flex_between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex_around {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.flex_column {
    display: flex;
    flex-direction: column;
}

.flex {
    flex: 1;
}

.flex_start>*+*,
.flex_end>*+* {
    margin-left: 10px;
}

/* 响应式适配 */
@media (min-width: 1024px) {
    html {
        zoom: 0.7;
    }

    footer#footer {
        zoom: 0.7;
    }
}

/*>=1024的设备*/
@media (min-width: 1100px) {
    html {
        zoom: 0.75;
    }

    footer#footer {
        zoom: 0.75;
    }
}

/*>=1024的设备*/
@media (min-width: 1280px) {
    html {
        zoom: 0.8;
    }

    footer#footer {
        zoom: 0.8;
    }
}

@media (min-width: 1366px) {
    html {
        zoom: 0.85;
    }

    footer#footer {
        zoom: 0.85;
    }
}

@media (min-width: 1440px) {
    html {
        zoom: 0.9;
    }

    footer#footer {
        zoom: 0.9;
    }
}

@media (min-width: 1680px) {
    html {
        zoom: 0.95;
    }

    footer#footer {
        zoom: 0.95;
    }
}

@media (min-width: 1920px) {
    html {
        zoom: 1;
    }

    footer#footer {
        zoom: 1;
    }
}

main {
    background: #f9f9f9;
}

/* 标题样式 */
.title_box {
    display: flex;
    flex-direction: column;
    margin: 40px 0px;
}

.title_box>span:nth-of-type(1) {
    color: #333333;
    font-weight: bold;
    font-size: 48px;
}

.title_box>span:nth-of-type(2) {
    color: #909399;
    font-weight: bold;
    font-size: 24px;
}

/* 段落样式 */
.paragraph_box p {
    font-size: 18px;
    text-indent: 2em;
    line-height: 32px;
}