* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Avenir Next", "Segoe UI", Tahoma, sans-serif;
    background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
    min-height: 100vh;
    padding: 20px;
}
.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
h1 {
    color: #333;
    margin-bottom: 10px;
}
.last-updated {
    color: #888;
    font-size: 0.9em;
    margin-bottom: 30px;
}
h2 {
    color: #333;
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.2em;
}
p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 15px;
}
ul {
    color: #666;
    line-height: 1.7;
    margin-bottom: 15px;
    margin-left: 20px;
}
li {
    margin-bottom: 8px;
}
.nav {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}
a {
    color: #0f766e;
    text-decoration: none;
    margin-right: 20px;
}
a:hover {
    text-decoration: underline;
}
.highlight {
    background: #ecfeff;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    border-left: 3px solid #0f766e;
}