:root {
    --primary-color: #2563EB;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --bg-white: #FFFFFF;
    --max-width: 680px;
    --spacing-unit: 1rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: calc(var(--spacing-unit) * 2) var(--spacing-unit);
    padding-bottom: calc(var(--spacing-unit) * 1);
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
}

.hero {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 2);
    animation: fadeInUp 1s ease-out;
    position: relative;
}

.company-name {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.tagline {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: calc(var(--spacing-unit) * 1);
    letter-spacing: -0.01em;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.7;
}

.product {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 2);
    animation: fadeInUp 1s ease-out 0.3s both;
    position: relative;
    padding-top: calc(var(--spacing-unit) * 2);
}

.product::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 1px;
    background-color: var(--text-secondary);
    opacity: 0.3;
}

.product-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    margin-bottom: calc(var(--spacing-unit) * 0.75);
    color: var(--primary-color);
}

.product-tagline {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.product-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.5;
}

.cta {
    text-align: center;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.contact-button {
    display: inline-block;
    padding: calc(var(--spacing-unit) * 0.5) 0;
    background-color: transparent;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 400;
    letter-spacing: 0.025em;
    transition: all 0.3s ease;
}

.contact-button:hover {
    color: var(--text-primary);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.contact-button:active {
    transform: translateY(0);
}

.product-header {
    margin-bottom: calc(var(--spacing-unit) * 0.75);
}

.product-status {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

footer {
    text-align: center;
    padding: var(--spacing-unit);
    padding-bottom: calc(var(--spacing-unit) + env(safe-area-inset-bottom, 0px));
    color: var(--text-secondary);
    font-size: 0.875rem;
    flex-shrink: 0;
    margin-top: auto;
    animation: fadeInUp 1s ease-out 0.5s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 640px) {
    body {
        min-height: -webkit-fill-available;
    }
    
    main {
        padding: calc(var(--spacing-unit) * 1.5) var(--spacing-unit);
    }

    .tagline {
        font-size: 1.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}