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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px 0;
}

header.hero {
    background: linear-gradient(135deg, #007bff, #00d4ff);
    color: white;
    text-align: center;
    padding: 80px 20px;
}

header.hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

header.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

header.hero .buttons a {
    text-decoration: none;
    color: white;
    padding: 15px 25px;
    margin: 5px;
    display: inline-block;
    background: #0056b3;
    border-radius: 5px;
    transition: background 0.3s;
}

header.hero .buttons a:hover {
    background: #003f7f;
}

section.features {
    padding: 60px 0;
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    margin-bottom: 40px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.feature {
    padding: 20px;
    background: #f4f4f4;
    border-radius: 10px;
}

section.mockup {
    text-align: center;
    padding: 60px 0;
}

section.mockup img {
    max-width: 100%;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

footer {
    background: #f4f4f4;
    text-align: center;
    padding: 20px 0;
}

footer a {
    color: #007bff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.back-link {
    display: inline-block;
    margin-top: 20px;
    color: #007bff;
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}