:root {
    --background: #ffffff;
    --soft: #f7f5ef;
    --text: #1f2622;
    --muted: #687069;
    --accent: #496b56;
    --accent-dark: #314a3a;
    --border: #e5e6e1;
    --dark: #1f2923;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;

    color: var(--text);
    background: var(--background);
    line-height: 1.6;
}

a {
    color: inherit;
}

.container {
    width: min(1180px, 90%);
    margin: 0 auto;
}

.narrow {
    width: min(780px, 90%);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;

    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);

    border-bottom: 1px solid var(--border);
}

.nav-row {
    min-height: 74px;

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

.brand {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.03em;
}

nav {
    display: flex;
    gap: 28px;
}

nav a {
    text-decoration: none;
    color: var(--muted);
    font-size: 15px;
}

nav a:hover {
    color: var(--text);
}

.hero {
    padding: 110px 0 100px;
    background:
        linear-gradient(135deg,
            #fbfaf7 0%,
            #eef3ed 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.35fr 0.85fr;
    gap: 80px;
    align-items: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 700;
    font-size: 13px;
    color: var(--accent);
}

.hero h1 {
    margin: 12px 0 24px;

    max-width: 780px;

    font-size: clamp(44px, 6vw, 76px);
    line-height: 1.02;
    letter-spacing: -0.045em;
}

.hero-text {
    max-width: 650px;
    font-size: 21px;
    color: var(--muted);
}

.hero-actions {
    margin-top: 36px;

    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.button {
    display: inline-block;

    padding: 13px 20px;
    border-radius: 10px;

    text-decoration: none;
    font-weight: 600;
}

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

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

.secondary {
    border: 1px solid var(--border);
    background: white;
}

.hero-card {
    background: rgba(255, 255, 255, 0.76);

    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 22px;

    padding: 28px;

    box-shadow:
        0 24px 70px rgba(44, 65, 52, 0.08);
}

.hero-card-item {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 18px;

    padding: 22px 0;

    border-bottom: 1px solid var(--border);
}

.hero-card-item:last-child {
    border-bottom: none;
}

.hero-card-item span {
    font-weight: 700;
    color: var(--accent);
}

.hero-card-item strong {
    font-size: 19px;
}

.hero-card-item p {
    margin: 5px 0 0;
    color: var(--muted);
}

.section {
    padding: 100px 0;
}

.section h2 {
    margin: 12px 0 20px;

    font-size: clamp(34px, 4vw, 52px);
    line-height: 1.12;
    letter-spacing: -0.035em;
}

.section-text {
    font-size: 19px;
    color: var(--muted);
}

.soft-background {
    background: var(--soft);
}

.three-columns,
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.feature-card,
.product-card {
    padding: 32px;

    border-radius: 18px;
    border: 1px solid var(--border);

    background: white;
}

.feature-number {
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 30px;
}

.feature-card h3,
.product-card h3 {
    font-size: 25px;
    margin-bottom: 10px;
}

.feature-card p,
.product-card p {
    color: var(--muted);
}

.product-card.featured {
    border-color: #b6c8ba;
    background: #f7faf7;
}

.product-status {
    font-size: 12px;
    font-weight: 700;

    text-transform: uppercase;
    letter-spacing: 0.08em;

    color: var(--accent);
}

.product-tag {
    margin-top: 26px;
    font-size: 14px;
    color: var(--muted);
}

.dark-section {
    background: var(--dark);
    color: white;
}

.learning-grid {
    display: grid;
    grid-template-columns: 1fr 0.8fr;
    gap: 80px;
    align-items: center;
}

.light {
    color: #b9d1c1;
}

.learning-card {
    padding: 34px;

    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 18px;

    background: rgba(255, 255, 255, 0.06);
}

.learning-card p {
    color: #d4d9d5;
}

.light-button {
    margin-top: 14px;
    background: white;
    color: var(--dark);
}

.privacy-section {
    text-align: center;
}

.text-link {
    display: inline-block;
    margin-top: 18px;

    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
}

.site-footer {
    border-top: 1px solid var(--border);
    padding: 54px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 40px;
    align-items: start;
}

.footer-grid p,
.copyright {
    color: var(--muted);
}

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

.footer-links a {
    text-decoration: none;
}

@media (max-width: 850px) {

    nav {
        display: none;
    }

    .hero {
        padding-top: 70px;
    }

    .hero-grid,
    .learning-grid {
        grid-template-columns: 1fr;
        gap: 45px;
    }

    .three-columns,
    .product-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-links {
        flex-direction: column;
        gap: 8px;
    }
}