:root {
    --primary: #4f46e5;
    --secondary: #3b82f6;
    --bg: #f9fafb;
    --text: #111827;
    --muted: #6b7280;
    --radius: 0.5rem;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a {
    color: var(--primary);
    text-decoration: none;
}

header {
    background: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

header .logo {
    font-weight: 700;
    font-size: 1.25rem;
}

nav button {
    background: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

img {
    width: 50px;
    height: 50px;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.125rem;
    max-width: 600px;
    margin-bottom: 2rem;
}

.hero a {
    background: white;
    color: var(--primary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 4rem 2rem;
}

.feature {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.feature h3 {
    margin-top: 1rem;
    font-size: 1.25rem;
}

.feature p {
    color: var(--muted);
    margin-top: 0.5rem;
}

.demo {
    padding: 4rem 2rem;
    text-align: center;
}

.demo iframe {
    width: 100%;
    max-width: 800px;
    height: 450px;
    border-radius: var(--radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.subscribe {
    background: white;
    padding: 4rem 2rem;
    text-align: center;
}

.subscribe h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.subscribe p {
    color: var(--muted);
    margin-bottom: 1.5rem;
}

.mc-form {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.mc-form input[type="email"] {
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: var(--radius);
}

.mc-form button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    cursor: pointer;
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--muted);
    font-size: 0.875rem;
}

@media (min-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }

    .hero p {
        font-size: 1.25rem;
    }
}