body {
    background-color: white;
    padding: 0;
    margin: 0;
    font-size: 18px;
    line-height: 1.8;
}
.container {
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 60px);
}
.container > .navbar {
    background: white;
    box-shadow: rgba(255, 255, 255, 0.2) 0px 0px 0px 1px inset, rgba(0, 0, 0, 0.9) 0px 0px 0px 1px;
    padding: 12px 18px;
    overflow: hidden;
}
.container > .app {
    flex-grow: 1;
    padding: 24px 16px 70px;
}
.container > .navbar > .logo {
    vertical-align: middle;
    width: 100px;
}
.container > .app > .box1 > .desc {
    color: rgba(0, 0, 0, 0.8);
    text-align: center;
    margin-top: 30px;
    flex-grow: 1;
    font-size: 19px;
}
.container > .app > .box1 > .brand {
    font-size: 30px;
    font-weight: bold;
    text-align: center;
    margin: 14px 0 4px;
    letter-spacing: 2px;
}
.container > .app > .box1 {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px 10%;
    border-bottom: 1px solid rgba(0, 0, 0, 0.15);
}
.container > .app > .box1 > .img {
    width: 220px;
    max-width: 60%;
    height: auto;
}
.container > .app > .box2 {
    padding: 24px 12%;
}
.container > .app > .box2 > .title {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 12px;
}
p {
    font-size: 17px;
    text-align: justify;
}
.container > .app > .box1 > .img {
    padding-right: 0;
}
.copyright {
    position: fixed;
    font-size: 14px;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    user-select: none;
}
.navbar > a {
    margin-top: 14px;
    text-decoration: none;
    font-weight: bold;
    color: black;
    font-size: 18px;
    float: right;
    vertical-align: middle;
}
.form1 {
    width: 100%;
    text-align: center;
}
.form1 > textarea {
    width: 100%;
    font-size: 17px;
    height: 200px;
    padding: 4px;
}
.ct {
    width: 100%;
    display: flex;
}
.ct > input {
    flex-grow: 1;
    gap: 5px;
    padding: 16px 10px;
    font-size: 17px;
}
.io1 {
    text-align: center;
    color: white;
    padding: 19px 19px;
}
.past2019box {
    border: solid 1px black;
    font-size: 14px;
    display: flex;
    flex-direction: column;
    /* 业务在此展开（2019） */
}
@media (max-width: 600px) {
    .container > .app > .box1 { padding: 14px 5%; }
    .container > .app > .box2 { padding: 16px 6%; }
    .container > .app > .box1 > .brand { font-size: 24px; }
    body { font-size: 16px; }
    .container > .app > .box1 > .desc { font-size: 16px; }
    p { font-size: 15px; }
    .copyright { font-size: 12px; }
}