* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    height: 100%;
    font-family: "Microsoft YaHei", sans-serif;
    color: #333;
    background-color: #f9f9f9;
}
.wrapper {
    display: flex;
    flex-direction: column;
    height: 100%;
}
.nav-bar {
    background: #194b8b;
    padding: 12px 0;
    text-align: center;
}
.nav-bar a {
    color: #fff;
    text-decoration: none;
    margin: 0 10px;
    font-size: 14px;
}
.nav-bar a:hover {
    text-decoration: underline;
}
.container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    background: #fff;
}
h1 {
    font-size: 20px;
    color: #194b8b;
    margin-bottom: 15px;
    border-left: 3px solid #194b8b;
    padding-left: 8px;
}
h2 {
    font-size: 16px;
    margin: 12px 0 8px;
}
p {
    font-size: 14px;
    margin-bottom: 8px;
    line-height: 1.6;
}
.form-group {
    margin: 8px 0;
    display: flex;
    align-items: center;
}
label {
    width: 120px;
    font-size: 14px;
}
input {
    padding: 4px 8px;
    width: 220px;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 13px;
}
button {
    background: #194b8b;
    color: #fff;
    border: none;
    padding: 6px 18px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
    margin-top: 8px;
    margin-right: 8px;
}
.footer {
    background: #f5f5f5;
    padding: 15px;
    text-align: center;
    font-size: 12px;
    color: #666;
}