:root {
    color-scheme: dark;
    --ink: #050b16;
    --ink-deep: #02060d;
    --panel: #0d1423;
    --panel-raised: #141d30;
    --panel-soft: #1a2439;
    --line: rgba(183, 196, 221, 0.18);
    --line-strong: rgba(183, 196, 221, 0.3);
    --text: #edf2fb;
    --muted: #aeb9ce;
    --ivory: #f4ecd7;
    --gold: #d7a84d;
    --gold-soft: rgba(215, 168, 77, 0.14);
    --teal: #4abeb2;
    --teal-deep: #0d6b65;
    --plum: #4c3358;
    --violet: #ab94ff;
    --success: #61c990;
    --warning: #e9b85f;
    --danger: #f08080;
    --shadow: rgba(0, 0, 0, 0.42);
    --display: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
    --body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    --wrap: 76rem;
    --reading: 48rem;
    --radius-sm: 0.45rem;
    --radius: 0.8rem;
    --radius-lg: 1.25rem;
}

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

html {
    background: var(--ink);
    color: var(--text);
    scroll-behavior: smooth;
    scroll-padding-top: 6rem;
}

body {
    background:
        radial-gradient(circle at 11% 2%, rgba(76, 51, 88, 0.32), transparent 32rem),
        radial-gradient(circle at 91% 13%, rgba(13, 107, 101, 0.18), transparent 28rem),
        var(--ink);
    color: var(--text);
    font-family: var(--body);
    line-height: 1.65;
    margin: 0;
    min-height: 100vh;
    overflow-wrap: anywhere;
}

body::before {
    background-image:
        radial-gradient(circle, rgba(237, 242, 251, 0.24) 0 1px, transparent 1.5px),
        radial-gradient(circle, rgba(215, 168, 77, 0.15) 0 1px, transparent 1.5px);
    background-position: 0 0, 2.4rem 1.8rem;
    background-size: 5.5rem 5.5rem, 7.5rem 7.5rem;
    content: "";
    inset: 0;
    mask-image: linear-gradient(to bottom, #000, transparent 43rem);
    opacity: 0.42;
    pointer-events: none;
    position: fixed;
    z-index: -1;
}

img {
    display: block;
    max-width: 100%;
}

button,
input,
textarea,
select {
    font: inherit;
}

a {
    color: var(--teal);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.2em;
}

a:hover {
    color: var(--ivory);
}

:where(a, button, input, textarea, select, summary):focus-visible {
    outline: 3px solid var(--violet);
    outline-offset: 3px;
}

::selection {
    background: var(--gold);
    color: var(--ink-deep);
}

.skip-link {
    background: var(--ivory);
    border-radius: var(--radius-sm);
    color: var(--ink-deep);
    font-weight: 800;
    left: 1rem;
    padding: 0.75rem 1rem;
    position: fixed;
    top: 1rem;
    transform: translateY(-180%);
    transition: transform 140ms ease;
    z-index: 100;
}

.skip-link:focus {
    transform: translateY(0);
}

.wrap {
    margin: 0 auto;
    max-width: var(--wrap);
    padding-inline: clamp(1rem, 4vw, 2rem);
    width: 100%;
}

.site-header {
    backdrop-filter: blur(18px);
    background: rgba(5, 11, 22, 0.82);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 30;
}

.header-inner {
    align-items: center;
    display: flex;
    gap: 1.25rem;
    justify-content: space-between;
    margin: 0 auto;
    max-width: var(--wrap);
    min-height: 4.75rem;
    padding: 0.7rem clamp(1rem, 4vw, 2rem);
}

.brand {
    align-items: center;
    color: var(--text);
    display: inline-flex;
    gap: 0.8rem;
    min-width: max-content;
    text-decoration: none;
}

.brand:hover {
    color: var(--ivory);
}

.brand-mark {
    background: linear-gradient(145deg, var(--gold), var(--teal-deep) 58%, var(--plum));
    border: 1px solid rgba(244, 236, 215, 0.4);
    border-radius: 50%;
    box-shadow: 0 0 1.25rem rgba(215, 168, 77, 0.2);
    height: 2rem;
    position: relative;
    width: 2rem;
}

.brand-mark::before,
.brand-mark::after {
    background: var(--ink-deep);
    border: 1px solid rgba(244, 236, 215, 0.45);
    border-radius: 50%;
    content: "";
    left: 50%;
    position: absolute;
    transform: translateX(-50%);
    width: 1.15rem;
}

.brand-mark::before {
    height: 0.44rem;
    top: 0.48rem;
}

.brand-mark::after {
    bottom: 0.48rem;
    height: 0.55rem;
}

.brand-copy {
    display: grid;
    line-height: 1.05;
}

.brand-copy strong {
    font-family: var(--display);
    font-size: 1.15rem;
    letter-spacing: 0.025em;
}

.brand-copy small {
    color: var(--muted);
    font-size: 0.67rem;
    letter-spacing: 0.13em;
    margin-top: 0.28rem;
    text-transform: uppercase;
}

.site-nav {
    align-items: center;
    display: flex;
    gap: 0.25rem;
}

.site-nav a {
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 700;
    padding: 0.58rem 0.72rem;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    background: rgba(74, 190, 178, 0.09);
    color: var(--ivory);
}

.site-nav a[aria-current="page"] {
    box-shadow: inset 0 -1px var(--teal);
}

.nav-toggle {
    align-items: center;
    background: var(--panel);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    color: var(--text);
    cursor: pointer;
    display: none;
    gap: 0.5rem;
    padding: 0.55rem 0.75rem;
}

.nav-toggle__icon,
.nav-toggle__icon::before,
.nav-toggle__icon::after {
    background: currentColor;
    content: "";
    display: block;
    height: 2px;
    position: relative;
    width: 1.05rem;
}

.nav-toggle__icon::before {
    position: absolute;
    top: -0.34rem;
}

.nav-toggle__icon::after {
    position: absolute;
    top: 0.34rem;
}

.hero {
    padding: clamp(4.2rem, 9vw, 8.5rem) 0 clamp(4rem, 8vw, 7rem);
}

.hero-grid {
    align-items: center;
    display: grid;
    gap: clamp(2.5rem, 7vw, 6rem);
    grid-template-columns: minmax(0, 0.9fr) minmax(27rem, 1.1fr);
}

.eyebrow {
    color: var(--gold);
    font-size: 0.73rem;
    font-weight: 850;
    letter-spacing: 0.17em;
    margin: 0 0 0.9rem;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    color: var(--ivory);
    font-family: var(--display);
    font-weight: 650;
    line-height: 1.05;
    margin: 0;
    text-wrap: balance;
}

h1 {
    font-size: clamp(3rem, 7vw, 5.9rem);
    letter-spacing: -0.045em;
    max-width: 12ch;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.4rem);
    letter-spacing: -0.025em;
}

h3 {
    font-size: clamp(1.2rem, 2vw, 1.55rem);
}

.hero-lede,
.page-lede {
    color: var(--muted);
    font-size: clamp(1.02rem, 1.8vw, 1.2rem);
    margin: 1.45rem 0 0;
    max-width: 42rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.button {
    align-items: center;
    background: var(--ivory);
    border: 1px solid var(--ivory);
    border-radius: var(--radius-sm);
    color: var(--ink-deep);
    display: inline-flex;
    font-size: 0.9rem;
    font-weight: 850;
    justify-content: center;
    min-height: 2.9rem;
    padding: 0.68rem 1.1rem;
    text-decoration: none;
}

.button:hover {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--ink-deep);
}

.button.secondary {
    background: rgba(74, 190, 178, 0.1);
    border-color: rgba(74, 190, 178, 0.52);
    color: var(--teal);
}

.button.secondary:hover {
    background: var(--teal);
    color: var(--ink-deep);
}

.button.ghost {
    background: transparent;
    border-color: var(--line-strong);
    color: var(--text);
}

.button.ghost:hover {
    border-color: var(--ivory);
    color: var(--ivory);
}

.compatibility {
    align-items: center;
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    font-size: 0.78rem;
    gap: 0.5rem;
    margin-top: 1.4rem;
}

.compatibility span {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.28rem 0.58rem;
}

.compatibility strong {
    color: var(--success);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.studio-window {
    background: rgba(8, 13, 24, 0.93);
    border: 1px solid rgba(171, 148, 255, 0.25);
    border-radius: var(--radius-lg);
    box-shadow: 0 2rem 5rem var(--shadow), 0 0 3rem rgba(76, 51, 88, 0.2);
    min-height: 28rem;
    overflow: hidden;
    position: relative;
}

.studio-window::after {
    background: linear-gradient(90deg, transparent, rgba(74, 190, 178, 0.55), transparent);
    content: "";
    height: 1px;
    left: 18%;
    position: absolute;
    right: 4%;
    top: 3.48rem;
}

.window-bar {
    align-items: center;
    background: rgba(20, 29, 48, 0.75);
    border-bottom: 1px solid var(--line);
    display: flex;
    gap: 0.42rem;
    height: 3.5rem;
    padding: 0 1rem;
}

.window-dot {
    background: var(--line-strong);
    border-radius: 50%;
    height: 0.55rem;
    width: 0.55rem;
}

.window-dot:nth-child(1) { background: var(--danger); }
.window-dot:nth-child(2) { background: var(--warning); }
.window-dot:nth-child(3) { background: var(--success); }

.window-title {
    color: var(--muted);
    font-family: var(--mono);
    font-size: 0.68rem;
    margin-left: auto;
}

.studio-grid {
    display: grid;
    grid-template-columns: 11.8rem minmax(0, 1fr);
    min-height: 24.5rem;
}

.studio-sidebar {
    background: rgba(5, 11, 22, 0.7);
    border-right: 1px solid var(--line);
    padding: 1rem 0.7rem;
}

.ui-label {
    color: var(--muted);
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.13em;
    padding: 0 0.5rem;
    text-transform: uppercase;
}

.tree {
    color: var(--muted);
    display: grid;
    font-family: var(--mono);
    font-size: 0.68rem;
    gap: 0.15rem;
    margin-top: 0.65rem;
}

.tree span {
    border-radius: 0.28rem;
    display: block;
    padding: 0.36rem 0.5rem;
}

.tree .indent { padding-left: 1.25rem; }
.tree .deeper { padding-left: 2rem; }
.tree .active {
    background: rgba(74, 190, 178, 0.13);
    color: var(--ivory);
}

.studio-main {
    min-width: 0;
    padding: 1rem;
}

.studio-toolbar {
    align-items: center;
    display: flex;
    gap: 0.5rem;
}

.crumbs {
    color: var(--muted);
    font-family: var(--mono);
    font-size: 0.66rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.live-chip {
    background: rgba(97, 201, 144, 0.1);
    border: 1px solid rgba(97, 201, 144, 0.35);
    border-radius: 999px;
    color: var(--success);
    font-size: 0.58rem;
    font-weight: 850;
    margin-left: auto;
    padding: 0.24rem 0.46rem;
    text-transform: uppercase;
}

.metric-row {
    display: grid;
    gap: 0.6rem;
    grid-template-columns: repeat(3, 1fr);
    margin: 1rem 0;
}

.metric {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 0.5rem;
    padding: 0.65rem;
}

.metric small {
    color: var(--muted);
    display: block;
    font-size: 0.54rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.metric strong {
    color: var(--ivory);
    display: block;
    font-family: var(--display);
    font-size: 1.05rem;
    margin-top: 0.2rem;
}

.editor {
    background: var(--ink-deep);
    border: 1px solid var(--line);
    border-radius: 0.55rem;
    min-height: 14.8rem;
    overflow: hidden;
}

.editor-tabs {
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    color: var(--ivory);
    font-family: var(--mono);
    font-size: 0.62rem;
    padding: 0.65rem 0.8rem;
}

.editor-code {
    color: #ccd7e8;
    font-family: var(--mono);
    font-size: clamp(0.55rem, 1.1vw, 0.68rem);
    line-height: 1.8;
    margin: 0;
    overflow: hidden;
    padding: 0.85rem;
    white-space: pre;
}

.code-key { color: var(--violet); }
.code-value { color: var(--teal); }
.code-number { color: var(--gold); }

.section {
    border-top: 1px solid var(--line);
    padding: clamp(4rem, 8vw, 7rem) 0;
}

.section.soft {
    background: rgba(13, 20, 35, 0.58);
}

.section.compact {
    padding-block: clamp(3rem, 6vw, 4.8rem);
}

.section-heading {
    margin-bottom: 2.3rem;
    max-width: 47rem;
}

.section-heading p:not(.eyebrow) {
    color: var(--muted);
    font-size: 1.05rem;
    margin: 1.1rem 0 0;
}

.promo-section {
    background:
        radial-gradient(circle at 90% 10%, rgba(74, 190, 178, 0.12), transparent 28rem),
        rgba(2, 6, 13, 0.42);
}

.promo-intro {
    align-items: end;
    display: flex;
    gap: 2rem;
    justify-content: space-between;
}

.promo-intro .section-heading,
.promo-intro .hero-actions {
    margin-bottom: 0;
}

.promo-intro .hero-actions {
    justify-content: flex-end;
    margin-top: 0;
}

.promo-frame {
    background: var(--ink-deep);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    box-shadow: 0 2rem 5rem var(--shadow);
    margin: 2.5rem 0 0;
    overflow: hidden;
}

.promo-player {
    aspect-ratio: 16 / 9;
    background: var(--ink-deep);
    position: relative;
}

.promo-player iframe {
    border: 0;
    display: block;
    height: 100%;
    width: 100%;
}

.promo-play {
    background: var(--ink-deep);
    border: 0;
    color: var(--ivory);
    cursor: pointer;
    display: block;
    height: 100%;
    padding: 0;
    position: relative;
    width: 100%;
}

.promo-play::after {
    background: linear-gradient(135deg, transparent 35%, rgba(2, 6, 13, 0.32));
    content: "";
    inset: 0;
    position: absolute;
}

.promo-play img {
    height: 100%;
    object-fit: cover;
    width: 100%;
}

.promo-play-icon,
.promo-play-label {
    position: absolute;
    z-index: 1;
}

.promo-play-icon {
    align-items: center;
    background: var(--ivory);
    border: 1px solid rgba(5, 11, 22, 0.45);
    border-radius: 50%;
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.45);
    color: var(--ink-deep);
    display: flex;
    font-size: clamp(1rem, 3vw, 1.7rem);
    height: clamp(4rem, 8vw, 5.5rem);
    justify-content: center;
    left: 50%;
    padding-left: 0.18em;
    top: 50%;
    transform: translate(-50%, -50%);
    transition: background 140ms ease, transform 140ms ease;
    width: clamp(4rem, 8vw, 5.5rem);
}

.promo-play-label {
    background: rgba(2, 6, 13, 0.82);
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    bottom: clamp(0.8rem, 3vw, 1.5rem);
    font-size: 0.78rem;
    font-weight: 800;
    left: 50%;
    letter-spacing: 0.08em;
    padding: 0.55rem 0.85rem;
    text-transform: uppercase;
    transform: translateX(-50%);
    white-space: nowrap;
}

.promo-play:hover .promo-play-icon {
    background: var(--gold);
    transform: translate(-50%, -50%) scale(1.06);
}

.promo-player noscript {
    display: block;
    padding: 1rem;
}

.promo-frame figcaption {
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.82rem;
    margin: 0;
    padding: 0.85rem 1rem;
}

.promo-transcript {
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    margin-top: 1rem;
    padding: 0.25rem 0 1rem;
}

.promo-transcript summary {
    color: var(--teal);
    cursor: pointer;
    font-weight: 800;
}

.promo-transcript p {
    margin-bottom: 0;
    max-width: var(--reading);
}

.feature-grid,
.card-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
    background: linear-gradient(155deg, rgba(20, 29, 48, 0.95), rgba(13, 20, 35, 0.88));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    min-height: 13rem;
    padding: clamp(1.25rem, 3vw, 1.7rem);
}

.card p,
.card li {
    color: var(--muted);
}

.card p:last-child,
.card ul:last-child {
    margin-bottom: 0;
}

.card-number {
    color: var(--gold);
    display: block;
    font-family: var(--mono);
    font-size: 0.67rem;
    letter-spacing: 0.1em;
    margin-bottom: 2.1rem;
}

.browser-grid {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.browser-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.browser-letter {
    align-items: center;
    background: linear-gradient(145deg, rgba(215, 168, 77, 0.18), rgba(74, 190, 178, 0.18));
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    color: var(--ivory);
    display: inline-flex;
    font-family: var(--display);
    font-size: 1.4rem;
    height: 3rem;
    justify-content: center;
    width: 3rem;
}

.browser-card strong {
    display: block;
    font-size: 0.84rem;
    margin-top: 0.65rem;
}

.browser-card small {
    color: var(--muted);
    display: block;
    font-size: 0.69rem;
    margin-top: 0.18rem;
}

.split {
    align-items: start;
    display: grid;
    gap: clamp(2rem, 6vw, 5rem);
    grid-template-columns: minmax(0, 0.9fr) minmax(22rem, 1.1fr);
}

.steps {
    counter-reset: steps;
    display: grid;
    gap: 0.75rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.steps li {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--muted);
    counter-increment: steps;
    min-height: 5.2rem;
    padding: 1rem 1rem 1rem 4.1rem;
    position: relative;
}

.steps li::before {
    align-items: center;
    background: var(--gold-soft);
    border: 1px solid rgba(215, 168, 77, 0.4);
    border-radius: 50%;
    color: var(--gold);
    content: counter(steps, decimal-leading-zero);
    display: flex;
    font-family: var(--mono);
    font-size: 0.7rem;
    height: 2.2rem;
    justify-content: center;
    left: 1rem;
    position: absolute;
    top: 1rem;
    width: 2.2rem;
}

.steps strong {
    color: var(--ivory);
    display: block;
    margin-bottom: 0.2rem;
}

.code-card {
    background: var(--ink-deep);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.code-card__header {
    align-items: center;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    display: flex;
    font-family: var(--mono);
    font-size: 0.72rem;
    justify-content: space-between;
    min-height: 2.8rem;
    padding: 0.5rem 0.8rem;
}

.copy-button {
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 0.32rem;
    color: var(--text);
    cursor: pointer;
    font-size: 0.68rem;
    padding: 0.28rem 0.55rem;
}

.copy-button:hover {
    border-color: var(--teal);
    color: var(--teal);
}

.code-card pre {
    margin: 0;
    overflow-x: auto;
    padding: 1rem;
}

code,
pre {
    font-family: var(--mono);
}

code {
    color: var(--ivory);
}

:not(pre) > code {
    background: rgba(171, 148, 255, 0.08);
    border: 1px solid rgba(171, 148, 255, 0.16);
    border-radius: 0.25rem;
    font-size: 0.86em;
    padding: 0.1em 0.3em;
}

.callout {
    background: rgba(74, 190, 178, 0.08);
    border: 1px solid rgba(74, 190, 178, 0.28);
    border-left: 3px solid var(--teal);
    border-radius: var(--radius-sm);
    color: var(--muted);
    margin-top: 1rem;
    padding: 1rem 1.15rem;
}

.callout.warning {
    background: rgba(233, 184, 95, 0.08);
    border-color: rgba(233, 184, 95, 0.28);
    border-left-color: var(--warning);
}

.callout strong {
    color: var(--ivory);
}

.callout p {
    margin: 0;
}

.page-hero {
    border-bottom: 1px solid var(--line);
    padding: clamp(4rem, 8vw, 7rem) 0;
}

.page-hero h1 {
    max-width: 15ch;
}

.page-layout {
    align-items: start;
    display: grid;
    gap: clamp(2rem, 7vw, 5.5rem);
    grid-template-columns: minmax(0, 1fr) 15rem;
}

.prose {
    max-width: var(--reading);
}

.prose h2 {
    font-size: clamp(1.7rem, 3vw, 2.35rem);
    margin: 3.5rem 0 1rem;
}

.prose h2:first-child {
    margin-top: 0;
}

.prose h3 {
    font-size: 1.3rem;
    margin: 2.2rem 0 0.7rem;
}

.prose p,
.prose li {
    color: var(--muted);
}

.prose strong {
    color: var(--ivory);
}

.prose table {
    border-collapse: collapse;
    font-size: 0.91rem;
    margin: 1.5rem 0;
    width: 100%;
}

.prose th,
.prose td {
    border-bottom: 1px solid var(--line);
    padding: 0.8rem;
    text-align: left;
    vertical-align: top;
}

.prose th {
    color: var(--ivory);
}

.prose td {
    color: var(--muted);
}

.page-toc {
    border-left: 1px solid var(--line);
    padding-left: 1.2rem;
    position: sticky;
    top: 6.5rem;
}

.page-toc strong {
    color: var(--gold);
    display: block;
    font-size: 0.69rem;
    letter-spacing: 0.13em;
    margin-bottom: 0.6rem;
    text-transform: uppercase;
}

.page-toc a {
    color: var(--muted);
    display: block;
    font-size: 0.82rem;
    padding: 0.3rem 0;
    text-decoration: none;
}

.page-toc a:hover {
    color: var(--ivory);
}

.diagram {
    display: grid;
    gap: 0.8rem;
    grid-template-columns: repeat(4, 1fr);
    margin: 1.6rem 0;
}

.diagram-box {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    min-height: 7.2rem;
    padding: 1rem;
    position: relative;
}

.diagram-box:not(:last-child)::after {
    color: var(--gold);
    content: "→";
    font-size: 1.2rem;
    position: absolute;
    right: -1.18rem;
    top: 2.65rem;
    z-index: 2;
}

.diagram-box strong {
    display: block;
    font-size: 0.84rem;
}

.diagram-box small {
    color: var(--muted);
    display: block;
    font-size: 0.72rem;
    margin-top: 0.35rem;
}

.permission-list {
    display: grid;
    gap: 0.7rem;
    margin: 1.4rem 0;
}

.permission-row {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    display: grid;
    gap: 0.75rem;
    grid-template-columns: 8.5rem 1fr;
    padding: 0.9rem 1rem;
}

.permission-row code {
    color: var(--teal);
}

.permission-row span {
    color: var(--muted);
    font-size: 0.9rem;
}

.site-footer {
    background: var(--ink-deep);
    border-top: 1px solid var(--line);
    padding: 3.5rem 0 1.5rem;
}

.footer-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: 1.6fr repeat(3, 1fr);
}

.site-footer h2 {
    font-size: 1.15rem;
}

.site-footer p,
.site-footer li,
.footer-meta {
    color: var(--muted);
    font-size: 0.85rem;
}

.site-footer ul {
    list-style: none;
    margin: 0.8rem 0 0;
    padding: 0;
}

.site-footer li + li {
    margin-top: 0.38rem;
}

.site-footer a {
    color: var(--muted);
}

.site-footer a:hover {
    color: var(--ivory);
}

.footer-meta {
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 2rem;
    justify-content: space-between;
    margin-top: 2.5rem;
    padding-top: 1.25rem;
}

.sr-only {
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

@media (max-width: 62rem) {
    .nav-toggle {
        display: inline-flex;
    }

    .site-nav {
        background: rgba(5, 11, 22, 0.98);
        border-bottom: 1px solid var(--line);
        display: none;
        left: 0;
        padding: 0.8rem 1rem 1rem;
        position: absolute;
        right: 0;
        top: 100%;
    }

    .site-nav[data-open="true"] {
        display: grid;
    }

    .hero-grid,
    .split {
        grid-template-columns: 1fr;
    }

    .promo-intro {
        align-items: flex-start;
        flex-direction: column;
    }

    .promo-intro .hero-actions {
        justify-content: flex-start;
    }

    .hero-grid {
        gap: 3rem;
    }

    .studio-window {
        max-width: 44rem;
    }

    .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .browser-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-layout {
        grid-template-columns: 1fr;
    }

    .page-toc {
        border-left: 0;
        border-top: 1px solid var(--line);
        grid-row: 1;
        padding: 1rem 0 0;
        position: static;
    }

    .page-toc a {
        display: inline-block;
        margin-right: 0.8rem;
    }

    .diagram {
        grid-template-columns: repeat(2, 1fr);
    }

    .diagram-box::after {
        display: none;
    }
}

@media (max-width: 40rem) {
    .hero {
        padding-top: 3.4rem;
    }

    h1 {
        font-size: clamp(2.8rem, 14vw, 4.2rem);
    }

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

    .studio-sidebar {
        border-bottom: 1px solid var(--line);
        border-right: 0;
    }

    .tree {
        grid-template-columns: repeat(2, 1fr);
    }

    .tree .indent,
    .tree .deeper {
        padding-left: 0.5rem;
    }

    .metric-row,
    .feature-grid,
    .card-grid.two,
    .browser-grid,
    .diagram,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .metric-row {
        grid-template-columns: repeat(3, 1fr);
    }

    .metric {
        padding: 0.5rem;
    }

    .metric strong {
        font-size: 0.88rem;
    }

    .studio-main {
        padding: 0.75rem;
    }

    .editor-code {
        font-size: 0.57rem;
    }

    .permission-row {
        grid-template-columns: 1fr;
    }
}

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