* {
    box-sizing: border-box;
}

html {
    background: var(--bg-color);
    scroll-behavior: smooth;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 16px;
    line-height: 1.5;
    text-rendering: optimizeLegibility;
}

[hidden] {
    display: none !important;
}

.document-container {
    max-width: 1024px;
    min-height: 100vh;
    margin: 0 auto;
    padding: 0 2rem;
}

.document-header {
    padding: 8rem 0 6rem;
}

.document-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 2rem;
}

.document-container h1,
.document-container h2,
.document-container h3 {
    color: var(--text-color);
    font-weight: 600;
    letter-spacing: 0;
}

.document-container h1 {
    max-width: 720px;
    margin: 0 0 1.5rem;
    font-size: 4rem;
    line-height: 1.1;
}

.document-container h2 {
    margin: 6rem 0 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.3;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.document-container h3 {
    margin: 2rem 0 1rem;
    font-size: 1.25rem;
    line-height: 1.35;
}

.document-container p,
.document-container ul {
    max-width: 720px;
}

.document-container p {
    margin: 0 0 1.5rem;
    color: var(--text-secondary);
}

.document-container strong {
    color: var(--text-color);
    font-weight: 650;
}

.document-container code {
    padding: 0.2em 0.4em;
    background: var(--code-bg);
    color: var(--text-color);
    font-family: "SF Mono", "Menlo", "Monaco", "Consolas", monospace;
    font-size: 0.85em;
}

.document-container ul {
    margin: 0 0 1.5rem;
    padding: 0;
    list-style: none;
}

.document-container ul li {
    position: relative;
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.document-container ul li::before {
    position: absolute;
    top: 0.65em;
    left: 0;
    width: 6px;
    height: 1px;
    background: var(--text-color);
    content: '';
}

.document-container a {
    color: var(--text-color);
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
    transition: border-color 0.2s;
}

.document-container a:hover,
.document-container a:focus-visible {
    border-bottom-color: var(--text-color);
}

.document-container a:focus-visible,
.document-container button:focus-visible {
    outline: 2px solid var(--text-color);
    outline-offset: 4px;
}

.document-subtitle {
    max-width: 640px;
    margin: 0;
    color: var(--text-secondary);
    font-size: 1.5rem;
    font-weight: 300;
    line-height: 1.4;
}

.document-controls {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 1.25rem;
}

.document-control-button,
.document-theme-toggle {
    display: inline-flex;
    min-width: 2.25rem;
    min-height: 2.25rem;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    border: 0;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font: inherit;
    font-size: 0.875rem;
}

.document-control-button:hover,
.document-theme-toggle:hover {
    color: var(--text-color);
}

.document-theme-icon {
    width: 1.25rem;
    height: 1.25rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
}

.policy-meta {
    margin-bottom: 1rem;
}

.policy-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2.5rem;
}

.policy-nav a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    padding: 2rem;
    border: 1px solid var(--border-color);
    background: transparent;
    transition: border-color 0.2s;
}

.feature-card:hover {
    border-color: var(--text-color);
}

.feature-icon {
    display: block;
    width: 32px;
    height: 32px;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.document-container .step-list {
    display: grid;
    grid-template-columns: 1fr;
    max-width: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--border-color);
    list-style: none;
    counter-reset: step-counter;
}

.document-container .step-list li {
    display: grid;
    grid-template-columns: 40px 1fr;
    align-items: baseline;
    gap: 2rem;
    margin: 0;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
}

.document-container .step-list li::before {
    position: static;
    width: auto;
    height: auto;
    background: none;
    color: var(--text-color);
    content: "0" counter(step-counter);
    counter-increment: step-counter;
    font-family: "SF Mono", monospace;
    font-size: 0.875rem;
}

.step-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
}

.step-content p {
    margin-bottom: 0;
    font-size: 1rem;
}

.faq-item {
    margin-bottom: 3rem;
    padding-left: 2rem;
    border-left: 1px solid var(--border-color);
}

.faq-item h3 {
    margin-top: 0;
    font-size: 1.125rem;
}

.document-container .specs-list li {
    margin-bottom: 1.25rem;
    padding-left: 0;
}

.document-container .specs-list li::before {
    display: none;
}

.document-footer {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    margin-top: 5rem;
    padding: 5rem 0 3.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.document-footer p {
    margin: 0;
    font-size: 0.875rem;
}

.document-brand {
    color: var(--text-color);
    font-weight: 700;
}

@media (max-width: 640px) {
    .document-container {
        padding: 0 1.25rem;
    }

    .document-header {
        padding: 4.5rem 0 3.5rem;
    }

    .document-header-row {
        flex-direction: column;
        gap: 1.5rem;
    }

    .document-container h1 {
        font-size: 2.5rem;
    }

    .document-container h2 {
        margin-top: 4rem;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .document-container .step-list li {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .document-footer {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}