:root {
    --primary: #2c3e50;
    --accent: #3498db;
    --text-light: #ecf0f1;
}
body, html {
    margin: 0; padding: 0; height: 100%;
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #1e272e 0%, #2c3e50 100%);
    color: var(--text-light);
    display: flex; align-items: center; justify-content: center;
}
.hero {
    text-align: center;
    padding: 20px;
    max-width: 800px;
    animation: fadeIn 1.2s ease-out;
}
h1 {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
    background: linear-gradient(to right, #fff, #3498db);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
p {
    font-size: 1.25rem;
    line-height: 1.6;
    opacity: 0.8;
    margin-bottom: 2.5rem;
}
.btn {
    margin: auto 10px;
    display: inline-block;
    padding: 15px 40px;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px rgba(52, 152, 219, 0.3);
}
.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(52, 152, 219, 0.4);
    background-color: #2980b9;
}
.footer {
    position: absolute;
    bottom: 30px;
    font-size: 0.9rem;
    opacity: 0.5;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 600px) {
    h1 { font-size: 2.5rem; }
}