.doc {
    --doc-rail: 15rem;
    --doc-side: 14rem;
    --doc-gap: 2.5rem;
    --doc-bar-h: 4rem;
    --doc-measure: 33rem;
    --doc-wide: 52rem;
    --fmt-ink: color-mix(in oklab, var(--fmt, var(--accent)) 38%, var(--ink));
}

.doc-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1rem;
    padding: 0.5rem 1.25rem;
    min-height: var(--doc-bar-h);
}

.doc .doc-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--ink);
}

.doc-brand img {
    transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.doc-brand:hover img {
    transform: scale(1.06);
}

.doc-crumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
    min-width: 0;
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc .doc-crumbs a {
    color: var(--ink-muted);
    text-decoration: none;
}

.doc .doc-crumbs a:hover {
    color: var(--fmt-ink);
}

.doc-crumb-sep {
    color: var(--line-strong);
}

.doc-bar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.doc .doc-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: var(--radius-md);
    background: var(--surface-raised);
    color: var(--ink);
    transition: background 150ms ease, transform 150ms ease;
}

.doc .doc-icon svg {
    width: 1.15rem;
    height: 1.15rem;
}

.doc .doc-icon:hover {
    background: var(--surface-hover);
    transform: translateY(-1px);
}

.doc-moon { display: none; }
.dark .doc-sun { display: none; }
.dark .doc-moon { display: block; }

.doc .doc-open {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.7rem 1.15rem;
    border-radius: var(--radius-md);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 88%, var(--ink));
    color: var(--surface);
    font-weight: 600;
    text-decoration: none;
    transition: transform 180ms cubic-bezier(0.2, 0.8, 0.2, 1), filter 180ms ease;
}

.doc .doc-open svg {
    width: 1.05rem;
    height: 1.05rem;
    transition: transform 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.doc .doc-open:hover {
    transform: translateY(-2px);
    filter: brightness(1.06);
}

.doc .doc-open:hover svg {
    transform: translateX(3px);
}

.doc .doc-open.is-bar {
    padding: 0 0.9rem;
    height: 2.25rem;
    font-size: var(--ui-sm);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 12%, var(--surface-raised));
    color: var(--fmt-ink);
}

.doc .doc-open.is-bar svg {
    width: 0.9rem;
    height: 0.9rem;
}

.doc .doc-open.is-bar:hover {
    background: color-mix(in oklab, var(--fmt, var(--accent)) 20%, var(--surface-raised));
    filter: none;
}

.doc-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--doc-gap);
    width: 100%;
    padding: 2rem 1.25rem 1rem;
    align-items: start;
}

.doc-main {
    min-width: 0;
    width: 100%;
    max-width: var(--doc-wide);
    margin-inline: auto;
    overflow-wrap: break-word;
    font-size: 0.9375rem;
    line-height: 1.65;
}

.doc-prose > p,
.doc-prose > ul,
.doc-prose > ol,
.doc-prose > h2,
.doc-prose > h3,
.doc-lead .doc-tldr,
.doc-lead .doc-lede,
.doc-lead h1 {
    max-width: var(--doc-measure);
}

@media (min-width: 62rem) {
    .doc-shell {
        grid-template-columns: minmax(0, 1fr) var(--doc-side);
    }
}

@media (min-width: 78rem) {
    .doc-shell {
        grid-template-columns: var(--doc-rail) minmax(0, 1fr) var(--doc-side);
    }
}

.doc-rail {
    display: none;
    position: sticky;
    top: calc(var(--doc-bar-h) + 1.25rem);
    max-height: calc(100vh - var(--doc-bar-h) - 3rem);
    overflow-y: auto;
    padding-right: 0.5rem;
    scrollbar-width: thin;
    scrollbar-color: var(--line-strong) transparent;
}

@media (min-width: 78rem) {
    .doc-rail { display: block; }
}

.doc-rail-hub {
    display: block;
    margin-bottom: 1rem;
    padding: 0.45rem 0.65rem;
    border-radius: var(--radius-md);
    font-size: var(--ui-sm);
    font-weight: 600;
    color: var(--ink);
    text-decoration: none;
}

.doc-rail-hub:hover {
    background: var(--surface-raised);
}

.doc-rail-list,
.doc-rail ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.doc-rail-group + .doc-rail-group {
    margin-top: 1.25rem;
}

.doc-rail-title {
    margin: 0 0 0.4rem;
    padding-left: 0.65rem;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.doc .doc-rail a {
    display: block;
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-sm);
    font-size: var(--ui-sm);
    line-height: 1.45;
    color: var(--ink-muted);
    text-decoration: none;
    transition: color 120ms ease, background 120ms ease;
}

.doc .doc-rail a:hover {
    color: var(--ink);
    background: var(--surface-raised);
}

.doc .doc-rail a.is-here {
    color: var(--fmt-ink);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 12%, transparent);
    font-weight: 600;
}

.doc-side {
    display: none;
}

@media (min-width: 62rem) {
    .doc-side {
        display: block;
        position: sticky;
        top: calc(var(--doc-bar-h) + 1.25rem);
        max-height: calc(100vh - var(--doc-bar-h) - 3rem);
        overflow-y: auto;
        scrollbar-width: thin;
        scrollbar-color: var(--line-strong) transparent;
    }
}

.doc-side-title {
    margin: 0 0 0.6rem;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.doc-toc ul {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 1px solid var(--line);
}

.doc .doc-toc a {
    display: block;
    padding: 0.3rem 0 0.3rem 0.85rem;
    margin-left: -1px;
    border-left: 1px solid transparent;
    font-size: var(--ui-2xs);
    line-height: 1.5;
    color: var(--ink-muted);
    text-decoration: none;
    transition: color 120ms ease, border-color 120ms ease;
}

.doc .doc-toc a:hover {
    color: var(--ink);
}

.doc .doc-toc a.is-here {
    color: var(--fmt-ink);
    border-left-color: var(--fmt-ink);
}

.doc-toc-mobile {
    margin: 1.5rem 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface-raised);
}

@media (min-width: 62rem) {
    .doc-toc-mobile { display: none; }
}

.doc-toc-mobile summary {
    padding: 0.7rem 1rem;
    font-size: var(--ui-sm);
    font-weight: 600;
    cursor: pointer;
}

.doc-toc-mobile-list {
    list-style: none;
    margin: 0;
    padding: 0 1rem 0.85rem;
}

.doc .doc-toc-mobile-list a {
    display: block;
    padding: 0.35rem 0;
    font-size: var(--ui-sm);
    color: var(--ink-muted);
    text-decoration: none;
}

.doc-lead h1 {
    margin: 0 0 1rem;
    font-size: clamp(1.75rem, 1.2rem + 1.9vw, 2.25rem);
    line-height: 1.12;
    letter-spacing: -0.03em;
    text-wrap: balance;
    color: var(--ink);
}

.doc-tldr {
    margin: 0 0 1rem;
    padding: 0.9rem 1.1rem;
    border: 1px solid color-mix(in oklab, var(--fmt, var(--accent)) 28%, var(--line));
    border-radius: var(--radius-lg);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 7%, transparent);
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--ink);
}

.doc-lede {
    margin: 0;
    color: var(--ink-muted);
}

.doc-cta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
    margin: 1.75rem 0 2.5rem;
}

.doc-try {
    margin: 1.75rem 0 2.5rem;
    scroll-margin-top: calc(var(--doc-bar-h) + 1.5rem);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface-raised);
    overflow: hidden;
}

.doc-try-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1rem;
    border-bottom: 1px solid var(--line);
    background: var(--surface-sunken);
}

.doc-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-pill);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 14%, transparent);
    color: var(--ink);
    font-size: var(--ui-2xs);
    font-weight: 600;
}

.doc-chip::before {
    content: "";
    width: 0.4rem;
    height: 0.4rem;
    border-radius: var(--radius-pill);
    background: var(--fmt, var(--accent));
}

.doc-try-hint {
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc-case {
    display: grid;
    grid-template-columns: 2.4rem minmax(0, 1fr);
    gap: 0.3rem 0.5rem;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--line);
}

.doc-case:last-child {
    border-bottom: 0;
}

.doc-case-tag {
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-muted);
    padding-top: 0.15rem;
}

.doc-case-tag.is-out {
    color: var(--fmt-ink);
}

.doc .doc-case-in,
.doc .doc-case-out {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--ui-sm);
    font-variant-numeric: tabular-nums;
    overflow-wrap: anywhere;
    background: none;
    padding: 0;
}

.doc .doc-case-in {
    color: var(--ink-muted);
}

.doc .doc-case-out {
    color: var(--ink);
    font-weight: 500;
}

.doc-case-note {
    grid-column: 2;
    margin: 0.1rem 0 0;
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc-try-foot {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
    padding: 1rem;
    border-top: 1px solid var(--line);
    background: var(--surface-sunken);
}

.doc-try-note {
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc-main h2 {
    position: relative;
    margin: 3rem 0 0.9rem;
    padding-left: 1rem;
    font-size: 1.25rem;
    line-height: 1.25;
    letter-spacing: -0.02em;
    text-wrap: balance;
    color: var(--ink);
    scroll-margin-top: calc(var(--doc-bar-h) + 1.5rem);
}

.doc-main h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 0.45rem;
    height: 0.45rem;
    border-radius: var(--radius-pill);
    background: var(--fmt, var(--accent));
}

.doc-main h3 {
    margin: 1.75rem 0 0.5rem;
    font-size: 1rem;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.doc-main p {
    margin: 0 0 1.1rem;
}

.doc-main ul,
.doc-main ol {
    margin: 0 0 1.1rem;
    padding-left: 1.1rem;
}

.doc-main li {
    margin: 0.35rem 0;
}

.doc-main a {
    color: var(--fmt-ink);
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
}

.doc :focus-visible {
    outline: 2px solid var(--fmt, var(--accent));
    outline-offset: 3px;
    border-radius: var(--radius-xs);
}

.doc .scroller {
    margin: 1.25rem 0;
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(to right, var(--surface-raised) 40%, transparent) left center / 3rem 100% no-repeat local,
        linear-gradient(to left, var(--surface-raised) 40%, transparent) right center / 3rem 100% no-repeat local,
        radial-gradient(farthest-side at 0 50%, color-mix(in oklab, var(--ink) 22%, transparent), transparent) left center / 1.25rem 100% no-repeat scroll,
        radial-gradient(farthest-side at 100% 50%, color-mix(in oklab, var(--ink) 22%, transparent), transparent) right center / 1.25rem 100% no-repeat scroll,
        var(--surface-raised);
    scrollbar-width: thin;
    scrollbar-color: var(--line-strong) transparent;
}

.doc table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--ui-sm);
}

.doc th,
.doc td {
    padding: 0.65rem 0.9rem;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--line);
}

.doc tbody tr:last-child td {
    border-bottom: 0;
}

.doc th {
    background: var(--surface-sunken);
    color: var(--ink-muted);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.doc td {
    font-variant-numeric: tabular-nums;
}

.doc tbody td:first-child {
    color: var(--ink);
    font-weight: 500;
}

.doc code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.875em;
    padding: 0.12em 0.35em;
    border-radius: var(--radius-xs);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 8%, var(--surface-sunken));
    word-break: break-word;
}

.doc .code {
    margin: 1.25rem 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface-sunken);
    overflow: hidden;
}

.doc .code-lang {
    display: block;
    padding: 0.45rem 1rem;
    border-bottom: 1px solid var(--line);
    background: var(--surface-raised);
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.doc .code pre {
    margin: 0;
    padding: 1rem;
    overflow-x: auto;
    background:
        linear-gradient(to right, var(--surface-sunken) 40%, transparent) left center / 3rem 100% no-repeat local,
        linear-gradient(to left, var(--surface-sunken) 40%, transparent) right center / 3rem 100% no-repeat local,
        radial-gradient(farthest-side at 0 50%, color-mix(in oklab, var(--ink) 22%, transparent), transparent) left center / 1.25rem 100% no-repeat scroll,
        radial-gradient(farthest-side at 100% 50%, color-mix(in oklab, var(--ink) 22%, transparent), transparent) right center / 1.25rem 100% no-repeat scroll,
        var(--surface-sunken);
    font-size: var(--ui-sm);
    line-height: 1.65;
    scrollbar-width: thin;
    scrollbar-color: var(--line-strong) transparent;
}

.doc .code code {
    background: none;
    padding: 0;
}

.doc .note {
    margin: 1.5rem 0;
    padding: 0.85rem 1.1rem;
    border: 1px solid color-mix(in oklab, var(--fmt, var(--accent)) 30%, var(--line));
    border-radius: var(--radius-lg);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 6%, transparent);
    font-size: 0.95rem;
}

.doc .rfc {
    display: grid;
    grid-template-columns: 1.6rem minmax(0, 1fr);
    align-items: start;
    gap: 0.1rem 0.6rem;
    margin: 0.6rem 0;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface-raised);
    font-size: var(--ui-sm);
}

.doc .rfc::before {
    content: "§";
    grid-row: span 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: var(--radius-sm);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 14%, transparent);
    color: var(--ink);
    font-weight: 700;
}

.doc .rfc a {
    align-self: center;
    font-weight: 500;
}

.doc .rfc-note {
    grid-column: 2;
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc .doc-links {
    list-style: none;
    margin: 1.25rem 0;
    padding: 0;
}

.doc .doc-links li {
    margin: 0.4rem 0;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface-raised);
}

.doc .doc-links a {
    font-weight: 500;
}

.doc .doc-links a::after {
    content: " ↗";
    font-size: 0.85em;
    color: var(--ink-muted);
}

.doc .doc-link-note {
    display: block;
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc-cards {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.25rem;
}

@media (min-width: 48rem) {
    .doc-cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.25rem 1.5rem;
    }
}

.doc .doc-cards a {
    display: block;
    padding: 0.7rem 0.75rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background 140ms ease;
}

.doc .doc-cards a:hover {
    background: var(--surface-raised);
}

.doc-card-title {
    display: block;
    font-weight: 600;
    color: var(--ink);
}

.doc-card-note {
    display: block;
    font-size: var(--ui-2xs);
    line-height: 1.45;
    color: var(--ink-muted);
}

.doc-qa {
    padding: 1rem 0;
    border-bottom: 1px solid var(--line);
}

.doc-qa:last-child {
    border-bottom: 0;
}

.doc-qa h3 {
    margin: 0 0 0.35rem;
    font-size: 1rem;
}

.doc-qa p {
    margin: 0;
    color: var(--ink-muted);
}

.doc-related ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.doc .doc-related a {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-pill);
    border: 1px solid color-mix(in oklab, var(--fmt, var(--accent)) 25%, var(--line));
    background: color-mix(in oklab, var(--fmt, var(--accent)) 7%, transparent);
    font-size: var(--ui-sm);
    text-decoration: none;
    transition: background 140ms ease;
}

.doc .doc-related a:hover {
    background: color-mix(in oklab, var(--fmt, var(--accent)) 16%, transparent);
}

.doc-steps {
    display: grid;
    gap: 0.75rem;
    margin: 3rem 0 1rem;
}

@media (min-width: 40rem) {
    .doc-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.doc .doc-step {
    display: block;
    padding: 0.85rem 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface-raised);
    text-decoration: none;
    transition: border-color 140ms ease, transform 140ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.doc .doc-step:hover {
    border-color: color-mix(in oklab, var(--fmt, var(--accent)) 45%, var(--line));
    transform: translateY(-2px);
}

.doc .doc-step.is-next {
    text-align: right;
}

.doc-step-kind {
    display: block;
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.doc-step-title {
    display: block;
    margin-top: 0.15rem;
    font-weight: 600;
    color: var(--ink);
}

.doc .doc-step:hover .doc-step-title {
    color: var(--fmt-ink);
}

.doc-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.9rem;
    margin: 0 0 1.1rem;
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc-meta > span + span::before {
    content: "";
    display: inline-block;
    width: 3px;
    height: 3px;
    margin-right: 0.6rem;
    border-radius: var(--radius-pill);
    background: var(--line-strong);
    vertical-align: middle;
}

.doc-meta .doc-chip + span::before {
    content: none;
    margin: 0;
}

.doc-anchor {
    margin-left: 0.4rem;
    font-weight: 400;
    color: var(--line-strong);
    text-decoration: none;
    opacity: 0;
    transition: opacity 140ms ease;
}

h2:hover .doc-anchor,
.doc-anchor:focus-visible {
    opacity: 1;
}

.doc-copy {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--ink-muted);
    cursor: pointer;
    opacity: 0;
    transition: opacity 140ms ease, background 140ms ease, color 140ms ease;
}

.doc-copy svg {
    width: 0.95rem;
    height: 0.95rem;
}

.doc-copy-done { display: none; }
.doc-copy.is-done { color: var(--fmt-ink); opacity: 1; }
.doc-copy.is-done svg:not(.doc-copy-done) { display: none; }
.doc-copy.is-done .doc-copy-done { display: block; }

.doc-case:hover .doc-copy,
.code:hover .doc-copy,
.doc-copy:focus-visible {
    opacity: 1;
}

.doc-copy:hover {
    background: var(--surface-hover);
    color: var(--ink);
}

@media (hover: none) {
    .doc-copy { opacity: 1; }
}

.doc-specimen {
    margin: 1.5rem 0;
    padding: 1.1rem 1rem 0.9rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface-raised);
    width: auto;
}

.doc-specimen .report-char {
    cursor: default;
}

.doc-specimen .report-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin: 1rem 0 0;
}

.doc-specimen figcaption {
    margin-top: 0.8rem;
    font-size: var(--ui-2xs);
    line-height: 1.5;
    color: var(--ink-muted);
}

@media (max-width: 44rem) {
    .doc-specimen .report-octets { display: none; }
}

.doc .code-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.35rem 0.6rem 0.35rem 1rem;
    border-bottom: 1px solid var(--line);
    background: var(--surface-raised);
}

.doc .code-lang {
    display: inline-block;
    padding: 0;
    border: 0;
    background: none;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.doc-rail-mobile {
    margin: 2.5rem 0 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface-raised);
}

@media (min-width: 78rem) {
    .doc-rail-mobile { display: none; }
}

.doc-rail-mobile summary {
    padding: 0.75rem 1rem;
    font-size: var(--ui-sm);
    font-weight: 600;
    cursor: pointer;
}

.doc-rail-mobile .doc-rail-list {
    padding: 0 1rem 1rem;
}

.doc .doc-rail-mobile a {
    display: block;
    padding: 0.3rem 0;
    font-size: var(--ui-sm);
    color: var(--ink-muted);
    text-decoration: none;
}

.doc .doc-rail-mobile a.is-here {
    color: var(--fmt-ink);
    font-weight: 600;
}

.doc-rail-mobile .doc-rail-title {
    margin: 0.9rem 0 0.3rem;
    padding: 0;
}

@media print {
    .app-header,
    .doc-rail,
    .doc-side,
    .doc-rail-mobile,
    .doc-toc-mobile,
    .doc-copy,
    .doc-steps,
    .footer-main { display: none !important; }

    .doc-shell { display: block; padding: 0; }
    .doc-main { max-width: none; font-size: 11pt; }
    .doc-try, .bits, .scroller, .code { break-inside: avoid; }
}

@media (prefers-reduced-motion: reduce) {
    .doc .doc-open,
    .doc .doc-open svg,
    .doc .doc-copy,
    .doc-anchor,
    .doc .doc-icon,
    .doc .doc-step,
    .doc-brand img {
        transition: none;
    }

    .doc .doc-open:hover,
    .doc .doc-open:hover svg,
    .doc .doc-icon:hover,
    .doc .doc-step:hover,
    .doc-brand:hover img {
        transform: none;
    }
}

@media (max-width: 44rem) {
    .doc .doc-open.is-bar { display: none; }
    .doc-main { font-size: 0.9375rem; }
    .doc-case {
        position: relative;
        grid-template-columns: 2.2rem minmax(0, 1fr);
        padding: 0.75rem 3rem 0.75rem 0.85rem;
    }

    .doc-case .doc-copy {
        position: absolute;
        top: 0.4rem;
        right: 0.4rem;
    }
    .doc .scroller {
        background: var(--surface-raised);
    }

    .doc .scroller table,
    .doc .scroller tbody,
    .doc .scroller tr,
    .doc .scroller td {
        display: block;
        width: 100%;
    }

    .doc .scroller thead {
        display: none;
    }

    .doc .scroller tr {
        padding: 0.55rem 0;
        border-bottom: 1px solid var(--line);
    }

    .doc .scroller tbody tr:last-child {
        border-bottom: 0;
    }

    .doc .scroller td {
        padding: 0.3rem 0.9rem;
        border-bottom: 0;
        overflow-wrap: break-word;
    }

    .doc .scroller td[data-th] {
        display: grid;
        grid-template-columns: 7.5rem minmax(0, 1fr);
        gap: 0.75rem;
        align-items: baseline;
    }

    .doc .scroller td[data-th]::before {
        content: attr(data-th);
        color: var(--ink-muted);
        font-size: 0.625rem;
        font-weight: 600;
        letter-spacing: 0.08em;
        text-transform: uppercase;
    }

    .doc .scroller tbody td:first-child {
        font-weight: 600;
    }

    .doc-copy {
        width: 2.5rem;
        height: 2.5rem;
        opacity: 1;
    }

    .doc .doc-crumbs a {
        padding: 0.4rem 0;
    }
}

.doc-play {
    margin: 1.75rem 0 2.5rem;
    padding: 1rem;
    border: 1px solid color-mix(in oklab, var(--fmt, var(--accent)) 28%, var(--line));
    border-radius: var(--radius-lg);
    background: var(--surface-raised);
}

.doc-play[hidden] { display: none; }

.doc-play-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.85rem;
}

.doc-play-hint {
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc-play-formats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 0.7rem;
}

.doc .doc-play-chip {
    padding: 0.28rem 0.7rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--ink-muted);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--ui-2xs);
    cursor: pointer;
    transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.doc .doc-play-chip:hover {
    color: var(--ink);
    border-color: var(--line-strong);
}

.doc .doc-play-chip.is-on {
    border-color: color-mix(in oklab, var(--fmt, var(--accent)) 45%, var(--line));
    background: color-mix(in oklab, var(--fmt, var(--accent)) 14%, transparent);
    color: var(--ink);
    font-weight: 600;
}

.doc .doc-play-input {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface-sunken);
    color: var(--ink);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--ui-sm);
}

.doc .doc-play-input:focus-visible {
    outline: 2px solid var(--fmt, var(--accent));
    outline-offset: 1px;
}

.doc-play-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.6rem 0;
}

.doc .doc-play-fill {
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface-sunken);
    color: var(--ink-muted);
    font-size: var(--ui-2xs);
    font-weight: 600;
    cursor: pointer;
    transition: color 120ms ease, border-color 120ms ease;
}

.doc .doc-play-fill:hover {
    color: var(--fmt-ink);
    border-color: color-mix(in oklab, var(--fmt, var(--accent)) 40%, var(--line));
}

.doc-play-out {
    margin: 0.5rem 0 0;
    min-height: 1.6rem;
}

.doc .doc-play-out code {
    display: block;
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius-md);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 8%, var(--surface-sunken));
    color: var(--ink);
    font-size: var(--ui-sm);
    font-weight: 500;
    overflow-wrap: anywhere;
    min-height: 1.2rem;
}

.doc-play-note {
    margin: 0.45rem 0 0;
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
}

.doc-specimen.is-live .report-char {
    cursor: pointer;
}

.doc-reading {
    margin: 0.8rem 0 0;
    padding: 0.5rem 0.7rem;
    border-radius: var(--radius-md);
    background: var(--surface-sunken);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--ui-2xs);
    color: var(--ink-muted);
    min-height: 1.9rem;
}

.doc-reading:empty { display: none; }

.doc .doc-play-pick {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.doc .doc-play-pick > svg {
    position: absolute;
    right: 0.5rem;
    width: 0.9rem;
    height: 0.9rem;
    color: var(--ink-muted);
    pointer-events: none;
}

.doc .doc-play-select {
    padding: 0.4rem 1.7rem 0.4rem 0.6rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface-sunken);
    color: var(--ink);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--ui-sm);
    cursor: pointer;
}

.doc .doc-play-input.is-inline {
    width: auto;
    flex: 1 1 12rem;
    min-width: 8rem;
}

.doc .doc-play-input.is-area {
    min-height: 6rem;
    line-height: 1.6;
    resize: vertical;
}

.doc-play-label {
    font-size: var(--ui-2xs);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.doc .doc-play-lines {
    margin: 0.6rem 0 0;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-md);
    background: color-mix(in oklab, var(--fmt, var(--accent)) 8%, var(--surface-sunken));
    overflow-x: auto;
    font-size: var(--ui-sm);
    line-height: 1.7;
    min-height: 2.4rem;
}

.doc .doc-play-lines code {
    background: none;
    padding: 0;
    white-space: pre;
}

.doc-sort {
    display: grid;
    gap: 1rem;
    margin-top: 0.75rem;
}

@media (min-width: 44rem) {
    .doc-sort { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.doc-sort-list {
    list-style: none;
    margin: 0.3rem 0 0;
    padding: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--ui-2xs);
    line-height: 1.9;
}

.doc-sort-list .is-kept { color: var(--fmt-ink); }
.doc-sort-list .is-moved { color: var(--ink-muted); }

.doc .report-chip {
    color: color-mix(in oklab, var(--field, var(--ink-muted)) 45%, var(--ink));
}