* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #fff;
    color: #111;
}

/* HEADER */
.site-header {
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
}

.header-inner {
    max-width: 1200px;
    margin: auto;
    padding: 18px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-size: 40px;
    font-weight: 800;
    letter-spacing: 1px;
}

.nav a {
    margin-left: 24px;
    text-decoration: none;
    color: #000;
    font-weight: 500;
}

.nav a.active {
    color: red;
}

/* PAGE */
.page {
    max-width: 900px;
    margin: 50px auto;
    padding: 0 32px;
}

.section-title {
    font-size: 42px;
    margin-bottom: 40px;
}

/* CONTENT */
.content h2 {
    font-size: 32px;
    margin-bottom: 10px;
}

.subtitle {
    margin-bottom: 30px;
    font-size: 18px;
    color: #444;
}

.content p {
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 24px;
}

/* FOOTER */
.site-footer {
    background: #f5f5f5;
    padding: 30px;
    text-align: center;
    margin-top: 50px;
    font-size: 14px;
}

hr {
    border: none;
    border-top: 1px solid #999;
    margin: 32px 0;
}