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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f0f2f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    padding: 60px 80px;
    text-align: center;
}

.card.hub  { border-top: 5px solid #3498db; }
.card.wms  { border-top: 5px solid #e67e22; }
.card.ff   { border-top: 5px solid #27ae60; }
.card.fmcg { border-top: 5px solid #8e44ad; }

.icon { font-size: 64px; margin-bottom: 16px; }

h1 {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 12px;
}

.msg {
    color: #7f8c8d;
    font-size: 16px;
    margin-bottom: 24px;
}

.back {
    display: inline-block;
    padding: 10px 24px;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    transition: opacity 0.2s;
}

.back:hover { opacity: 0.85; }
.back.hub  { background: #3498db; }
.back.wms  { background: #e67e22; }
.back.ff   { background: #27ae60; }
.back.fmcg { background: #8e44ad; }