body {
    margin: 0;
    font-family: 'Inter', system-ui, sans-serif;
    background: linear-gradient(180deg, #e5f7e2 0%, #fff 65%);
    color: #111;
}
.main-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.welcome-card {
    width: min(760px, 100%);
    background: #fff;
    border-radius: 32px;
    box-shadow: 0 22px 50px rgba(2, 38, 25, 0.12);
    overflow: hidden;
}
.welcome-header {
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: #fff;
    padding: 38px 32px;
}
.welcome-header h1 {
    margin: 0 0 10px;
    font-size: clamp(2rem, 3vw, 3rem);
}
.welcome-header p {
    margin: 0;
    line-height: 1.6;
    opacity: 0.92;
}
.welcome-body {
    padding: 32px;
}
.role-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 26px;
}
.role-card {
    border: 1px solid #d7f2dc;
    border-radius: 26px;
    padding: 22px;
    background: #f6fff6;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 240px;
}
.role-card h2 { margin-top: 0; color: #128c7e; }
.role-card p { margin: 12px 0 18px; color: #4f5b62; line-height: 1.6; }
.role-card a { 
    display: inline-flex; 
    align-items: center; 
    justify-content: center; 
    padding: 12px 16px; 
    border-radius: 999px; 
    background: #25d366; 
    color: #fff; 
    text-decoration: none; 
    font-weight: 600;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(37, 211, 102, 0.2);
    border: none;
    cursor: pointer;
}
.role-card a:hover { 
    background: #128c7e;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
    transform: translateY(-2px);
}
.role-card a:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(37, 211, 102, 0.2);
}
.role-card a.secondary { 
    background: #128c7e; 
    margin-top: 10px;
}
.role-card a.secondary:hover {
    background: #0d5a52;
    box-shadow: 0 4px 12px rgba(18, 140, 126, 0.3);
}
.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 36px; }
.feature-item { background: #f4fff7; border: 1px solid #d7f2dc; border-radius: 24px; padding: 20px; }
.feature-item strong { display: block; margin-bottom: 10px; color: #128c7e; }
@media (max-width: 860px) {
    .role-grid, .features { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
    .welcome-card { border-radius: 24px; }
    .welcome-header { padding: 28px 20px; }
    .welcome-body { padding: 24px; }
}