body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: #0b0f1a;
    color: #f0f0f0;
}

header {
    background: linear-gradient(to right, #1f0036, #000000);
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 0 30px #ff00cc55;
}

header h1 {
    font-size: 2.8rem;
    color: #ff00cc;
    text-shadow: 0 0 10px #ff00cc, 0 0 20px #ff00cc;
}

nav {
    background-color: #111;
    display: flex;
    justify-content: center;
    padding: 15px 0;
}

nav a {
    color: #bbb;
    text-decoration: none;
    margin: 0 25px;
    padding: 10px 5px;
    transition: 0.3s;
    position: relative;
}

nav a:hover {
    color: #00ffff;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0%;
    height: 2px;
    bottom: 0;
    left: 0;
    background: #00ffff;
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

.introduce {
    text-align: center;
    padding: 100px 20px;
    background: url('https://images.unsplash.com/photo-1624274094883-df781b3a3a7b?auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
    background-blend-mode: overlay;
    background-color: rgba(0, 0, 0, 0.6);
}

.introduce h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff;
}

.introduce p {
    font-size: 1.1rem;
    color: #ccc;
}

.btn {
    display: inline-block;
    margin-top: 30px;
    background-color: #ff00cc;
    color: #fff;
    border: none;
    padding: 15px 30px;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 8px;
    box-shadow: 0 0 15px #ff00cc;
    transition: 0.3s ease;
}

.btn:hover {
    background-color: #e600aa;
    transform: scale(1.05);
}

.section {
    max-width: 960px;
    margin: 60px auto;
    padding: 0 20px;
}

.section h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #ffcc00;
    text-shadow: 0 0 5px #ffcc00;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background-color: #1a1a2e;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 15px #222;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h4 {
    margin-bottom: 10px;
    color: #00ffff;
}

.card p {
    font-size: 0.95rem;
    color: #ccc;
}

footer {
    text-align: center;
    padding: 30px;
    background-color: #0e0e1a;
    color: #666;
    font-size: 0.9rem;
    margin-top: 60px;
}