* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: #1f2937;
    background: #f8fafc;
}

.hero {
    min-height: 650px;
    background: linear-gradient(135deg, #111827, #374151);
    color: #ffffff;
}

.nav {
    max-width: 1100px;
    margin: auto;
    padding: 22px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 20px;
    font-weight: 800;
}

.nav-btn {
    color: #ffffff;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,.35);
    padding: 10px 18px;
    border-radius: 999px;
}

.hero-content {
    max-width: 900px;
    margin: 100px auto 0;
    padding: 0 24px;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255,255,255,.12);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: clamp(40px, 7vw, 72px);
    line-height: 1.05;
    margin: 22px 0 20px;
}

.hero p {
    max-width: 680px;
    margin: 0 auto;
    color: #d1d5db;
    font-size: 19px;
    line-height: 1.7;
}

.buttons {
    margin-top: 32px;
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    text-decoration: none;
    padding: 14px 24px;
    border-radius: 10px;
    font-weight: 700;
}

.primary {
    background: #ffffff;
    color: #111827;
}

.secondary {
    border: 1px solid rgba(255,255,255,.4);
    color: #ffffff;
}

.section {
    max-width: 1100px;
    margin: auto;
    padding: 80px 24px;
}

.section h2 {
    text-align: center;
    font-size: 36px;
    margin: 0 0 10px;
}

.section-desc {
    text-align: center;
    color: #6b7280;
    margin-bottom: 40px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.card {
    background: #ffffff;
    border-radius: 18px;
    padding: 30px;
    box-shadow: 0 8px 30px rgba(0,0,0,.06);
}

.icon {
    font-size: 40px;
}

.card h3 {
    font-size: 21px;
}

.card p {
    color: #6b7280;
    line-height: 1.7;
}

.cta {
    max-width: 1052px;
    margin: 0 auto 70px;
    padding: 40px;
    border-radius: 20px;
    background: #111827;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
}

.cta h2 {
    text-align: left;
    margin: 0 0 8px;
}

.cta p {
    margin: 0;
    color: #d1d5db;
}

footer {
    text-align: center;
    padding: 25px;
    color: #6b7280;
    background: #ffffff;
}

@media (max-width: 700px) {
    .cards {
        grid-template-columns: 1fr;
    }

    .cta {
        margin: 0 24px 50px;
        display: block;
    }

    .cta .btn {
        margin-top: 20px;
    }

    .hero-content {
        margin-top: 70px;
    }

    .nav-btn {
        font-size: 13px;
    }
}