body {
    margin: 0;
    padding: 0;
}

.site-wrapper {
    width: 900px;
    max-width: calc(100% - 32px);
    margin: 0 auto;
}

.site-header {
    padding: 20px 0;
}

.site-layout {
    display: flex;
    gap: 20px;
}

.sidebar {
    width: 200px;
    flex-shrink: 0;
}

.main-content {
    flex: 1;
    min-width: 0;
}

img {
    max-width: 100%;
    height: auto;
}

.site-footer {
    margin-top: 30px;
    padding: 20px 0;
}

/* Mobile */
@media (max-width: 700px) {
    .site-wrapper {
        width: auto;
        max-width: none;
        margin: 0;
        padding: 0 12px;
    }

    .site-header {
        padding: 15px 0;
    }

    .site-header h1 {
        font-size: 2.2rem;
        margin-bottom: 8px;
    }

    .site-header p {
        margin-top: 0;
    }

    .site-layout {
        display: block;
    }

    .sidebar {
        width: 100%;
        margin-bottom: 20px;
    }

    .sidebar h2 {
        margin-top: 15px;
        margin-bottom: 10px;
    }

    .sidebar p {
        margin: 8px 0;
    }

    .main-content {
        width: 100%;
    }

    .main-content h1,
    .main-content h2 {
        margin-top: 20px;
        margin-bottom: 12px;
    }

    .site-footer {
        margin-top: 20px;
        padding: 15px 0;
    }
}