:root {
    --primary: #1357d4;
    --primary-dark: #0a3693;
    --text: #172033;
    --muted: #5d6678;
    --background: #f5f7fb;
    --white: #ffffff;
    --border: #dfe4ed;
    --success: #16794b;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--background);
    line-height: 1.6;
}

a {
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.hero {
    color: var(--white);
    background:
        linear-gradient(
            135deg,
            rgba(10, 54, 147, 0.98),
            rgba(19, 87, 212, 0.92)
        );
    padding: 0 6% 80px;
}

.navbar {
    max-width: 1180px;
    margin: auto;
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.nav-button {
    padding: 10px 20px;
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    text-decoration: none;
}

.hero-content {
    max-width: 1180px;
    margin: 50px auto 0;
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 60px;
    align-items: center;
}

.hero h1 {
    margin: 18px 0;
    font-size: clamp(2.4rem, 6vw, 4.6rem);
    line-height: 1.08;
}

.hero p {
    max-width: 720px;
    font-size: 1.2rem;
    opacity: 0.94;
}

.badge,
.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.badge {
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 30px;
}

.section-label {
    color: var(--primary);
}

.hero-image img {
    max-height: 520px;
    margin: auto;
    border-radius: 12px;
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.button {
    display: inline-block;
    padding: 14px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    text-align: center;
}

.button.primary {
    color: var(--white);
    background: var(--primary);
}

.hero .button.primary {
    color: var(--primary-dark);
    background: var(--white);
}

.button.secondary {
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.65);
}

.button.large {
    padding: 17px 35px;
    font-size: 1.1rem;
}

.section {
    max-width: 1180px;
    margin: 0 auto;
    padding: 90px 6%;
}

.section h2 {
    margin: 10px 0 20px;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.15;
}

.intro {
    text-align: center;
}

.intro p {
    max-width: 760px;
    margin: auto;
    color: var(--muted);
    font-size: 1.15rem;
}

.cards {
    margin-top: 35px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    padding: 30px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 12px 35px rgba(23, 32, 51, 0.06);
}

.card h3 {
    margin-top: 0;
    font-size: 1.45rem;
}

.card p {
    margin-bottom: 0;
    color: var(--muted);
}

.audience {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.check-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.check-list li {
    padding: 17px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.check-list li::before {
    content: "✓";
    margin-right: 10px;
    color: var(--success);
    font-weight: 700;
}

.purchase {
    margin-bottom: 80px;
    color: var(--white);
    background: var(--primary-dark);
    border-radius: 24px;
    text-align: center;
}

.purchase .section-label {
    color: #b9d1ff;
}

.purchase p {
    max-width: 680px;
    margin: 0 auto;
}

.price {
    margin: 25px 0;
    font-size: 3rem;
    font-weight: 800;
}

.purchase small {
    display: block;
    margin-top: 20px;
    opacity: 0.8;
}

footer {
    padding: 35px 6%;
    color: #d7dded;
    background: #10182a;
    display: flex;
    justify-content: space-between;
    gap: 25px;
}

footer p {
    margin: 0;
}

.footer-links {
    display: flex;
    gap: 20px;
}

@media (max-width: 850px) {
    .hero-content,
    .audience {
        grid-template-columns: 1fr;
    }

    .hero-content {
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-image img {
        max-height: 430px;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    .check-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .hero {
        padding-left: 20px;
        padding-right: 20px;
    }

    .hero h1 {
        font-size: 2.3rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .section {
        padding: 65px 20px;
    }

    .purchase {
        margin-left: 15px;
        margin-right: 15px;
        width: auto;
    }

    footer {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}