* {
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, "PingFang SC", "Hiragino Sans GB", sans-serif;
    background: #ffffff;
    color: #111111;
    line-height: 1.8;
    max-width: 740px;
    margin: 40px auto;
    padding: 0 24px;
}

h1 {
    font-size: 28px;
    margin-bottom: 12px;
    font-weight: 600;
}

nav {
    margin-bottom: 24px;
    font-size: 16px;
}

nav a {
    color: #0000ee;
    text-decoration: none;
    margin: 0 8px;
}

nav a:first-child {
    margin-left: 0;
}

nav a:hover {
    text-decoration: underline;
}

h2 {
    font-size: 20px;
    margin: 36px 0 12px;
    font-weight: 600;
}

a {
    color: #0000ee;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.search-box {
    margin: 14px 0 26px;
}

input[type="text"] {
    padding: 7px 9px;
    border: 1px solid #999;
    font-size: 15px;
    width: 320px;
}

button {
    padding: 7px 12px;
    font-size: 15px;
    border: 1px solid #777;
    background: #f5f5f5;
    cursor: pointer;
}

ul {
    padding-left: 26px;
    margin-bottom: 14px;
}

li {
    margin: 9px 0;
}

.note {
    color: #333333;
    margin: 10px 0 18px;
}

hr {
    border: none;
    border-top: 1px solid #bbbbbb;
    margin: 36px 0;
}

.footer {
    margin-top: 48px;
    font-size: 14px;
    color: #444444;
}