* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
    font-family: Arial, sans-serif;
    color: #333;
}

.hub {
    max-width: 800px;
    margin: 30px auto;
    padding: 30px 25px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.hub-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

.hub-header h1 {
    flex: 1;
    margin: 0;
    font-size: 20px;
    text-align: center;
}

.logo-belcorp { height: 60px; }
.logo-swo { height: 100px; }

.hub-intro {
    text-align: center;
    margin: 30px 0 20px;
    font-size: 16px;
    color: #666;
}

.apps {
    display: flex;
    gap: 20px;
}

.app-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 28px 22px;
    border-radius: 8px;
    color: #fff;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.15s;
}

.app-btn:hover,
.app-btn:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.2);
}

.app-btn:focus-visible { outline: 3px solid #333; outline-offset: 2px; }

.app-cdr { background-color: #4CAF50; }
.app-checklist { background-color: #2b6cb0; }

.app-titulo { font-size: 20px; font-weight: bold; }
.app-desc { font-size: 14px; line-height: 1.4; opacity: 0.95; }

.hub-footer {
    margin-top: 35px;
    text-align: center;
}

.hub-footer a {
    font-size: 13px;
    color: #666;
    text-decoration: none;
}

.hub-footer a:hover { color: #333; text-decoration: underline; }

@media (max-width: 600px) {
    .apps { flex-direction: column; }
    .hub-header { flex-direction: column; }
}