body.mqtt-landing-body {
    margin: 0;
    background: linear-gradient(to bottom, #eef3f7 0%, #ffffff 180px);
    color: #2a2a2a;
    font-family: Arial, Helvetica, sans-serif;
}
.mqtt-page {
    width: min(1000px, calc(100% - 32px));
    margin: 0 auto;
}
.mqtt-topbar {
    padding: 20px 0 10px;
}
.mqtt-brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.mqtt-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    color: #25374a;
}
.mqtt-brand img { width: 78px; height: auto; display: block; }
.mqtt-brand-title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.2px;
}
.mqtt-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-wrap: wrap;
}
.mqtt-nav a {
    color: #2d2d2d;
    text-decoration: none;
    padding: 11px 14px;
    border-radius: 2px;
    font-size: 15px;
    font-weight: 700;
}
.mqtt-nav a.active,
.mqtt-nav a:hover { background: #a8deef; color: #173f63; }
.mqtt-nav .auth-links {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 10px;
}
.mqtt-nav .auth-links a,
.mqtt-auth-pill {
    padding: 10px 14px;
    border: 1px solid #c5d7e5;
    background: #fff;
    border-radius: 18px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    color: #173f63;
}
.mqtt-nav .auth-links a:hover,
.mqtt-auth-pill:hover { background: #edf7fb; }
.mqtt-hero {
    margin-top: 8px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 310px;
    background: #0f4f7b;
    overflow: hidden;
    box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}
.mqtt-hero-media {
    min-height: 370px;
    background: #c7e7f4 center/cover no-repeat;
}
.mqtt-hero-side {
    background: linear-gradient(180deg, #18618e 0%, #0e4c78 100%);
    color: #fff;
    padding: 26px 28px;
}
.mqtt-hero-side h2 {
    margin: 0 0 14px;
    font-size: 18px;
}
.mqtt-hero-side ul {
    margin: 0;
    padding-left: 18px;
    line-height: 1.52;
    font-size: 14px;
}
.mqtt-grid {
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 36px 34px;
}
.mqtt-card h3 {
    margin: 0 0 10px;
    color: #6aa5bf;
    font-size: 18px;
    font-weight: 700;
}
.mqtt-card p {
    margin: 0;
    color: #5d6770;
    line-height: 1.58;
    font-size: 14px;
}
.mqtt-footer {
    padding: 42px 0 26px;
    text-align: center;
    color: #999;
    font-size: 12px;
}
.mqtt-footer a { color: #6aa5bf; text-decoration: none; }
@media (max-width: 900px) {
    .mqtt-hero { grid-template-columns: 1fr; }
    .mqtt-grid { grid-template-columns: 1fr; gap: 24px; }
}