* {
    box-sizing: border-box;
}
* {
    font-family: Vazirmatn, Tahoma, Arial, sans-serif;
}

html, body {
    margin: 0;
    padding: 0;
    background: #f3f6fb;
    color: #0f172a;
    
}

body {
    line-height: 1.8;
}

a {
    color: inherit;
}

.page-shell {
    min-height: 100vh;
}

.main-layout {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 16px 32px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 20px;
}

.content-column,
.side-column {
    min-width: 0;
}

.card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    padding: 22px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
    margin-bottom: 20px;
}

.section-heading h2 {
    margin: 0 0 6px;
    font-size: 20px;
    color: #0f172a;
}

.section-heading p {
    margin: 0 0 18px;
    color: #64748b;
    font-size: 14px;
}

@media (max-width: 980px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
}