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

* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-family: "Roboto", "SF Pro SC", "SF Pro Display", "SF Pro Icons", "PingFang SC", BlinkMacSystemFont, -apple-system, "Segoe UI", "Microsoft Yahei", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", "Helvetica", "Arial", sans-serif;
    font-weight: 400;
    margin: 0;
}

a {
    -webkit-transition: all 0.35s;
    -moz-transition: all 0.35s;
    transition: all 0.35s;
}

#mainbody {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background-color: #fdf7f2;
    background-image: url('../img/index_web.png');
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
}

/* 覆盖在背景图Logo上的透明热点区域 */
.hotspot {
    position: absolute;
    display: block;
    z-index: 10;
    cursor: pointer;
}

/* PC端热点：对应 index_web.png 中Logo区域（百分比随背景图等比缩放） */
.hotspot-web {
    left: 14%;
    top: 19.5%;
    width: 39.5%;
    height: 63.5%;
}

/* 移动端热点默认隐藏 */
.hotspot-phone {
    display: none;
}

@media (max-width: 767px) {
    #mainbody {
        background-image: url('../img/index_phone.png');
    }

    .hotspot-web {
        display: none;
    }

    /* 移动端热点：对应 index_phone.png 中Logo区域 */
    .hotspot-phone {
        display: block;
        left: 8%;
        top: 25%;
        width: 84%;
        height: 41%;
    }
}

.footer {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    padding: 12px 0;
    color: rgba(107, 74, 46, 0.55);
    text-align: center;
}

.footer p {
    font-size: 13px;
    margin: 0;
}

.footer a {
    color: rgba(107, 74, 46, 0.75);
    text-decoration: none;
}

.footer a:hover,
.footer a:focus {
    color: rgba(107, 74, 46, 1);
}