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

body {
    font-family: Arial, sans-serif;
    background: #f7f7f5;
    color: #292929;
}

/* Navigation */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 7%;
    background: white;
}

header h2 {
    color: #75533f;
}

nav a {
    text-decoration: none;
    color: #444;
    margin: 0 12px;
    font-size: 14px;
}

button {
    background: #75533f;
    color: white;
    border: none;
    padding: 13px 22px;
    border-radius: 6px;
    cursor: pointer;
}

/* Hero section */
.hero {
    min-height: 430px;
    display: flex;
    align-items: center;
    padding: 60px 10%;
    background: #eee7df;
}

.hero-content {
    max-width: 600px;
}

.tagline {
    color: #75533f;
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 52px;
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero-content > p:not(.tagline) {
    color: #666;
    line-height: 1.8;
    margin-bottom: 25px;
}

/* Subjects */
.subjects {
    padding: 65px 8%;
    text-align: center;
}

.subjects h2 {
    font-size: 30px;
    margin-bottom: 12px;
}

.subjects > p {
    color: #777;
    margin-bottom: 35px;
}

.subject-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.subject-card {
    background: white;
    padding: 35px 15px;
    border-radius: 10px;
    box-shadow: 0 3px 12px #0000000a;
    font-weight: bold;
    border-bottom: 4px solid #b99a83;
}

/* Footer */
footer {
    background: #292929;
    color: white;
    text-align: center;
    padding: 25px;
    font-size: 13px;
}

/* Mobile screens */
@media (max-width: 700px) {
    header {
        flex-direction: column;
        gap: 18px;
    }

    nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }

    nav a {
        margin: 0;
    }

    .hero h1 {
        font-size: 38px;
    }

    .subject-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}