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

:root {
    --color-text: #2c3138;
    --color-text-secondary: #55606e;
    --color-bg: #ffffff;
    --color-bg-alt: #f2f5f7;
    --color-accent: #3a7abd;
    --color-accent-light: #4a8fd4;
    --max-width: 960px;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Hero */

.hero {
    padding: 100px 0 80px;
    text-align: center;
    background: var(--color-bg-alt);
}

.app-icon {
    margin-bottom: 32px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
    color: var(--color-text);
}

.tagline {
    font-size: 1.35rem;
    color: var(--color-text-secondary);
    font-weight: 400;
    margin-bottom: 24px;
}

.description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 540px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Features */

.features {
    padding: 80px 0;
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px 40px;
}

.feature {
    text-align: center;
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: var(--color-bg-alt);
    color: var(--color-accent);
    margin-bottom: 16px;
}

.feature h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.feature p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Platforms */

.platforms {
    padding: 80px 0;
    text-align: center;
    background: var(--color-bg-alt);
}

.platforms h2 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.platforms-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 36px;
}

.platform-badges {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.badge-link {
    display: inline-block;
    transition: opacity 0.2s ease;
}

.badge-link:hover {
    opacity: 0.8;
}

.app-store-badge {
    height: 44px;
    width: auto;
}

/* Footer */

footer {
    padding: 40px 0;
    text-align: center;
    background: var(--color-bg);
}

footer p {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* Responsive */

@media (max-width: 768px) {
    .hero {
        padding: 72px 0 56px;
    }

    .app-icon {
        width: 148px;
        height: 148px;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .tagline {
        font-size: 1.15rem;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 32px;
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .hero h1 {
        font-size: 2rem;
    }
}