:root {
    --bg-color: #fafafa;
    --surface-color: #ffffff;
    --text-primary: #171717;
    --text-secondary: #525252;
    --border-color: #e5e5e5;
    --accent-color: #000000;
    --accent-hover: #262626;
    --focus-ring: rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.page-wrapper {
    max-width: 640px;
    margin: 0 auto;
    padding: 80px 24px;
}

.header {
    margin-bottom: 48px;
}

.eyebrow {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.main-content {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.download-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.card-info h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.card-info p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    background-color: var(--accent-color);
    color: #ffffff;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.15s ease;
    white-space: nowrap;
    margin-left: 24px;
}

.button:hover {
    background-color: var(--accent-hover);
}

.button:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.instructions-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.steps-list {
    list-style-type: none;
    counter-reset: custom-counter;
}

.steps-list li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.steps-list li::before {
    counter-increment: custom-counter;
    content: counter(custom-counter);
    position: absolute;
    left: 0;
    top: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #f5f5f5;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.footer {
    margin-top: 80px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

@media (max-width: 480px) {
    .download-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    .button {
        margin-left: 0;
        width: 100%;
    }
}