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

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    background: #f0f4fa;
    color: #1a2a3a;
    line-height: 1.5;
}

header {
    background: #0a2b3e;
    color: white;
    padding: 2rem 1.5rem 1.5rem;
    text-align: center;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

nav {
    margin-top: 1rem;
}

nav a {
    color: white;
    margin: 0 1rem;
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    text-decoration: underline;
}

main {
    max-width: 1200px;
    margin: 3rem auto;
    padding: 0 1.5rem;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #0a2b3e;
    border-left: 5px solid #2c7da0;
    padding-left: 1rem;
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.card {
    background: white;
    padding: 1.5rem 1rem;
    text-align: center;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    font-weight: 600;
    transition: all 0.2s ease;
    border: 1px solid #e2e8f0;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: #2c7da0;
}

.highlight {
    background: #e6f4ff;
    border-left: 4px solid #2c7da0;
    color: #0a5b78;
}

main ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

main li {
    background: white;
    padding: 1rem 1.2rem;
    border-radius: 16px;
    border: 1px solid #e2edf2;
}

main li a {
    color: #2c7da0;
    text-decoration: none;
    font-weight: 500;
}

form {
    background: white;
    padding: 2rem;
    border-radius: 28px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
    max-width: 700px;
    margin: 0 auto;
}

label {
    font-weight: 600;
    display: block;
    margin-top: 1.2rem;
    margin-bottom: 0.3rem;
    color: #1e3a4a;
}

input, select, textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid #cbd5e1;
    font-size: 1rem;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: #2c7da0;
    box-shadow: 0 0 0 3px rgba(44, 125, 160, 0.15);
}

button {
    margin-top: 2rem;
    background: #2c7da0;
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 40px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
}

button:hover {
    background: #1f6280;
}

footer {
    text-align: center;
    padding: 2rem;
    background: #e2eaf1;
    color: #2c4a5e;
    font-size: 0.85rem;
    margin-top: 4rem;
}

@media (max-width: 640px) {
    .brand-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
    main ul {
        grid-template-columns: 1fr;
    }
    nav a {
        margin: 0 0.6rem;
        font-size: 0.85rem;
    }
}