:root {
    --bg-dark: #0f172a;
    --text-light: #f8fafc;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --card-bg: #1e293b;
    --border: #334155;
}

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

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
}

.logo span {
    color: var(--accent);
}

nav ul {
    display: flex;
    list-style: none;
    align-items: center;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--accent);
}

.hero {
    padding: 100px 0;
    text-align: center;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

.highlight {
    color: var(--accent);
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 40px;
    color: #94a3b8;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-dark);
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.stats {
    padding: 80px 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
    text-align: center;
}

.card h3 {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 10px;
}

.product {
    padding: 80px 0;
    background: #111827;
}

.features {
    margin-top: 50px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
}

.icon {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--accent);
    margin-right: 20px;
    background: rgba(56, 189, 248, 0.1);
    padding: 10px 15px;
    border-radius: 6px;
}

.cta-section {
    padding: 100px 0;
    text-align: center;
}

form {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    gap: 10px;
}

input[type="email"] {
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: white;
    width: 300px;
}

footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: #64748b;
}

@media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    form { flex-direction: column; align-items: center; }
    input[type="email"] { width: 100%; }
}