/* GENERAL */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: #f3f3f3;
    color: #222;
}

/* HEADER */
.header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #ff0000, #900000);
    color: #fff;
}
.logo {
    max-width: 150px;
    margin-bottom: 15px;
}
.subtitle {
    margin-top: 10px;
    font-size: 18px;
}

/* BUTTONS */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    margin-top: 15px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
}

.btn-primary {
    background: #ffffff;
    color: #d00000;
    border: 2px solid #fff;
}

.btn-secondary {
    background: #d00000;
    color: #fff;
}

/* SECTIONS */
.section {
    background: #fff;
    padding: 30px 20px;
    margin: 25px auto;
    max-width: 950px;
    border-radius: 12px;
    box-shadow: 0 1px 8px rgba(0,0,0,0.15);
}

.section h2 {
    color: #d00000;
}

/* FEATURES LIST */
.features li {
    margin: 10px 0;
    font-size: 16px;
}

/* DEVICES GRID */
.device-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 15px;
    margin-top: 20px;
}
.device-card {
    background: #ffe6e6;
    padding: 15px;
    text-align: center;
    border-radius: 10px;
    font-size: 16px;
    border: 1px solid #ffb3b3;
}

/* FOOTER */
.footer {
    text-align: center;
    padding: 20px;
    background: #d00000;
    color: white;
}
.footer a {
    color: #fff;
    text-decoration: underline;
}