* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f3f6fb;
    color: #172b4d;
}

nav {
    background: #102a43;
    padding: 18px 7%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

nav h2 {
    color: white;
    margin: 0;
}

nav a {
    color: #d9eaf5;
    text-decoration: none;
    margin: 0 9px;
    font-size: 14px;
}

nav a:hover {
    color: #45d6c5;
}

.container {
    max-width: 1050px;
    margin: 40px auto;
    padding: 20px;
}

.hero {
    background: linear-gradient(120deg, #087f8c, #164e63);
    color: white;
    padding: 55px 35px;
    border-radius: 14px;
}

.hero h1 {
    font-size: 36px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.card, form, .panel {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 12px #0000000d;
}

.card a {
    color: #087f8c;
    font-weight: bold;
    text-decoration: none;
}

input, textarea, button {
    width: 100%;
    padding: 13px;
    margin: 10px 0;
    border: 1px solid #ccd5e0;
    border-radius: 6px;
    font: inherit;
}

button {
    background: #087f8c;
    color: white;
    border: 0;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    background: #06636e;
}

pre {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    background: #f1f5f9;
    padding: 15px;
    border-radius: 8px;
    min-height: 45px;
}

footer {
    text-align: center;
    padding: 30px;
    color: #64748b;
}

.muted {
    color: #64748b;
}