body {
    font-family: var(--brand-font);
    margin: 0;
    padding: 0;
    color: var(--brand-text-dark);
    background: var(--brand-light);
}

/* Navigation */
nav {
    background: #ffffff;
    padding: 22px 40px;
    border-bottom: 2px solid #d9e1e7;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-logo {
    height: 36px;
    width: auto;
}

nav a {
    margin-right: 25px;
    text-decoration: none;
    color: var(--brand-primary);
    font-weight: bold;
    font-size: 16px;
    transition: color 0.15s ease, opacity 0.15s ease;
}

nav a:hover,
nav a:focus {
    color: var(--brand-accent);
    opacity: 0.9;
}

/* Sections & headings */
section {
    padding: 80px 40px;
    max-width: 1200px;
    margin: auto;
}

section + section {
    border-top: 1px solid rgba(6,20,26,0.08);
}

h1, h2, h3 {
    margin: 0;
}

.heading-xl {
    font-size: 3.25rem;
    line-height: 1.2;
    font-weight: 700;
}

.heading-lg {
    font-size: 2.1rem;
    line-height: 1.3;
    font-weight: 700;
}

.heading-md {
    font-size: 1.4rem;
    line-height: 1.4;
    font-weight: 600;
}

.text-body {
    font-size: 1rem;
    line-height: 1.6;
}

.text-sm {
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Spacing utilities */
.mt-sm { margin-top: 0.75rem; }
.mt-md { margin-top: 1.5rem; }
.mt-lg { margin-top: 2.5rem; }

.mb-sm { margin-bottom: 0.75rem; }
.mb-md { margin-bottom: 1.5rem; }
.mb-lg { margin-bottom: 2.5rem; }

/* Forms */
input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #d0d5dd;
    font-family: var(--brand-font);
    font-size: 0.95rem;
}

/* Footer */
footer {
    background: var(--brand-primary);
    color: #fff;
    padding: 50px;
    text-align: center;
    margin-top: 60px;
}

/* Mobile baseline */
@media (max-width: 768px) {
    nav {
        padding: 16px 20px;
    }
    nav a {
        margin-right: 15px;
        font-size: 15px;
        visibility:hidden;
    }

    section {
        padding: 50px 20px;
    }

    h2.heading-lg {
        font-size: 28px;
    }
}