/* ===== Base ===== */

body {
    margin: 0;
    font-family: "Times New Roman", Times, serif;
    color: #111;
    background: #ffffff;
}

/* ===== Top Menu Bar ===== */

.topbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid #ddd;
}

.topbar-inner {
    max-width: 900px;
    margin: auto;
    padding: 0.8rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1rem;
    font-weight: bold;
}

.menu a {
    margin-left: 1.2rem;
    text-decoration: none;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.95rem;
    color: #003366;
}

.menu a:hover {
    text-decoration: underline;
}

/* ===== Main Content ===== */

main {
    max-width: 720px;
    margin: auto;
    padding: 6rem 1.2rem 3rem 1.2rem;
}

section {
    margin-bottom: 3rem;
}

h2 {
    font-size: 1.3rem;
    font-weight: normal;
    margin-bottom: 0.8rem;
}

p, li {
    font-size: 1rem;
    line-height: 1.65;
}

ol, ul {
    padding-left: 1.4rem;
}

/* ===== Footer ===== */

footer {
    margin-top: 4rem;
    font-size: 0.9rem;
    color: #555;
}

/* ===== Mobile ===== */

@media (max-width: 600px) {
    .topbar-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .menu {
        margin-top: 0.5rem;
    }

    .menu a {
        margin-left: 0;
        margin-right: 1rem;
    }
}