/* Global */

body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    color: #111;
    background: #ffffff;
}

a {
    color: #0000cc;
    text-decoration: underline;
}

/* ================= Header ================= */

.site-header {
    border-bottom: 2px solid #000;
    background: #fff;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
}

.site-title h1 {
    margin: 0;
    font-size: 32px;
}

.site-title p {
    margin: 4px 0 0;
    font-size: 14px;
}

.main-nav a {
    margin-left: 16px;
    font-size: 14px;
}

/* ================= Page Layout ================= */

.page-layout {
    display: grid;
    grid-template-columns: 240px 1fr 240px;
    gap: 150px;
    padding: 30px 40px;
}

/* Sidebars */

.sidebar {
    font-size: 14px;
}

.sidebar h3 {
    margin-top: 0;
    border-bottom: 1px solid #000;
    padding-bottom: 4px;
}

.sidebar ul {
    list-style: none;
    padding-left: 0;
}

.sidebar li {
    margin: 6px 0;
}

.sidebar input {
    width: 100%;
    padding: 6px;
    margin-bottom: 20px;
}

/* Main Content */

.main-content {
    max-width: 900px;
}

.intro p {
    font-size: 16px;
    line-height: 1.6;
}

.brand-list {
    margin-top: 40px;
}

.brand-list h2 {
    border-bottom: 1px solid #000;
    padding-bottom: 6px;
}

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

.site-footer {
    border-top: 2px solid #000;
    margin-top: 60px;
    padding: 20px 40px;
    font-size: 13px;
}

.footer-inner {
    max-width: 1200px;
}

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

@media (max-width: 900px) {

    .page-layout {
        grid-template-columns: 1fr;
        gap: 8px;        /* reduce spacing on mobile */
        padding: 20px;
    }

    .right-sidebar {
        display: none;
    }

    .header-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .main-nav {
        margin-top: 10px;
    }
}