/* =========================================================
   AI Toolkit — Editorial design system
   Monochrome foundation · single muted accent · type-driven
   ========================================================= */

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

:root {
    /* Palette */
    --bg:           #f3f1ec;   /* warm off-white */
    --bg-elev:     #ffffff;    /* surface */
    --bg-alt:      #292722;    /* alt section */
    --ink:         #111210;    /* near-black */
    --ink-2:       #2a2a27;
    --ink-mute:    #6b6b65;
    --ink-quiet:   #98968e;
    --line:        #d9d6cd;
    --line-soft:   #e6e3da;

    /* Accent — muted acid yellow */
    --accent:      #d6e23a;
    --accent-ink:  #1a1c00;

    /* Type */
    --font-sans:   "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono:   "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

    /* Scale */
    --step--1: 0.8125rem;
    --step-0:  0.9375rem;
    --step-1:  1.0625rem;
    --step-2:  1.25rem;
    --step-3:  1.5rem;
    --step-4:  2rem;
    --step-5:  2.75rem;
    --step-6:  3.75rem;
    --step-7:  5.5rem;
    --step-8:  7.5rem;

    /* Layout */
    --container: 1280px;
    --gutter: 2rem;
    --radius: 4px;
    --radius-lg: 8px;

    /* Motion */
    --ease: cubic-bezier(.2,.7,.2,1);
    --dur:  .25s;
}

html { -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-sans);
    font-size: var(--step-0);
    line-height: 1.55;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
em { font-style: italic; }

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

/* ---------- Layout primitives ---------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding-inline: var(--gutter);
}

.section {
    padding-block: clamp(4rem, 10vw, 8rem);
    border-top: 1px solid var(--line);
}
.section--alt { background: var(--bg-alt); }

.section__head { max-width: 64ch; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section__head--split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: end;
    max-width: none;
}
@media (min-width: 900px) {
    .section__head--split { grid-template-columns: 1.1fr 1fr; gap: 4rem; }
    .section__head--split .lede { padding-bottom: .6rem; }
}

/* ---------- Typography ---------- */
.eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--step--1);
    letter-spacing: .04em;
    color: var(--ink-mute);
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.display {
    font-size: clamp(2.75rem, 8vw, var(--step-7));
    line-height: 0.98;
    letter-spacing: -0.035em;
    font-weight: 700;
    color: var(--ink);
}
.display em {
    font-style: normal;
    background: var(--accent);
    color: var(--accent-ink);
    padding: 0 .15em;
    border-radius: 2px;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
}

.display--cta { font-size: clamp(2.5rem, 7vw, 5rem); }

.h2 {
    font-size: clamp(2rem, 4.5vw, var(--step-5));
    line-height: 1.05;
    letter-spacing: -0.025em;
    font-weight: 700;
    color: var(--ink);
}

.lede {
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    line-height: 1.55;
    color: var(--ink-mute);
    max-width: 56ch;
    margin-top: 1.25rem;
}

/* ---------- Buttons & links ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    padding: .85rem 1.25rem;
    font-size: var(--step-0);
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid transparent;
    transition: background var(--dur) var(--ease),
                color var(--dur) var(--ease),
                border-color var(--dur) var(--ease),
                transform var(--dur) var(--ease);
    line-height: 1;
    white-space: nowrap;
}
.btn--solid {
    background: var(--ink);
    color: var(--bg);
}
.btn--solid:hover { background: #000; }

.btn--ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--line);
}
.btn--ghost:hover {
    border-color: var(--ink);
    background: var(--bg-elev);
}

.btn--lg { padding: 1.05rem 1.75rem; font-size: var(--step-1); }

.link-quiet {
    font-size: var(--step-0);
    color: var(--ink-mute);
    border-bottom: 1px solid transparent;
    padding-bottom: 1px;
    transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.link-quiet:hover { color: var(--ink); border-color: var(--ink); }

/* =========================================================
   NAV
   ========================================================= */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(243, 241, 236, 0.85);
    backdrop-filter: saturate(160%) blur(10px);
    -webkit-backdrop-filter: saturate(160%) blur(10px);
    border-bottom: 1px solid var(--line);
}
.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 2rem;
}
.nav__brand {
    display: inline-flex;
    align-items: baseline;
    gap: .55rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.nav__mark {
    color: var(--ink);
    font-size: 1.05rem;
    transform: translateY(1px);
}
.nav__name { font-size: 1rem; }
.nav__tag {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-quiet);
    margin-left: .25rem;
}

.nav__menu {
    display: none;
    gap: 2rem;
}
@media (min-width: 900px) {
    .nav__menu { display: flex; }
}
.nav__menu a {
    font-size: var(--step-0);
    color: var(--ink-mute);
    transition: color var(--dur) var(--ease);
    position: relative;
}
.nav__menu a:hover { color: var(--ink); }
.nav__menu a::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -22px;
    height: 1px;
    background: var(--ink);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur) var(--ease);
}
.nav__menu a:hover::after { transform: scaleX(1); }

.nav__actions {
    display: none;
    align-items: center;
    gap: 1.25rem;
}
@media (min-width: 900px) {
    .nav__actions { display: inline-flex; }
}

.nav__toggle {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    padding: .5rem;
}
.nav__toggle span {
    width: 22px;
    height: 1.5px;
    background: var(--ink);
    transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
@media (min-width: 900px) {
    .nav__toggle { display: none; }
}
.nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.nav.is-open .nav__menu,
.nav.is-open .nav__actions {
    display: flex;
    position: absolute;
    left: 0; right: 0;
    top: 64px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 1.5rem var(--gutter);
    flex-direction: column;
    gap: 1rem;
}
.nav.is-open .nav__actions { top: auto; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
    padding-block: clamp(3rem, 8vw, 7rem) clamp(3rem, 7vw, 6rem);
}
.hero__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(2rem, 4vw, 3.5rem);
}
@media (min-width: 1000px) {
    .hero__grid {
        grid-template-columns: repeat(12, 1fr);
        grid-template-areas:
            "meta     meta     meta     meta     meta     meta     meta     meta     meta     meta     meta     meta"
            "headline headline headline headline headline headline headline panel    panel    panel    panel    panel"
            "lede     lede     lede     lede     lede     lede     lede     panel    panel    panel    panel    panel"
            "stats    stats    stats    stats    stats    stats    stats    stats    stats    stats    stats    stats";
        gap: 2.5rem 2rem;
    }
    .hero__meta     { grid-area: meta; }
    .hero__headline { grid-area: headline; }
    .hero__lede     { grid-area: lede; }
    .hero__panel    { grid-area: panel; align-self: end; }
    .hero__stats    { grid-area: stats; }
}

.hero__meta { border-top: 1px solid var(--line); padding-top: 1rem; }
.hero__meta .eyebrow { margin: 0; }

.hero__lede {
    max-width: 52ch;
    color: var(--ink-mute);
    font-size: clamp(1rem, 1.3vw, 1.15rem);
}
.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 2rem;
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem 2rem;
    border-top: 1px solid var(--line);
    padding-top: 1.5rem;
    margin-top: 1rem;
}
@media (min-width: 700px) {
    .hero__stats { grid-template-columns: repeat(4, 1fr); }
}
.stat { display: flex; flex-direction: column; gap: .25rem; }
.stat__num {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--ink);
}
.stat__label {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
    text-transform: uppercase;
    letter-spacing: .03em;
}

/* Addon panel preview */
.panel {
    background: var(--bg-elev);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.panel__bar {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .65rem .9rem;
    border-bottom: 1px solid var(--line-soft);
    background: var(--bg-alt);
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
}
.panel__dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent);
    border: 1px solid var(--accent-ink);
}
.panel__title { flex: 1; }
.panel__shortcut {
    border: 1px solid var(--line);
    padding: .1rem .4rem;
    border-radius: 3px;
    color: var(--ink);
}
.panel__body { padding: 1rem 1rem 1.1rem; }
.panel__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .55rem 0;
    border-bottom: 1px solid var(--line-soft);
    font-size: var(--step-0);
}
.panel__row:last-of-type { border-bottom: 0; }
.panel__label {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
    text-transform: uppercase;
    letter-spacing: .03em;
}
.panel__value { color: var(--ink); font-weight: 500; }
.panel__value--mono {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    font-weight: 400;
    color: var(--ink-2);
    background: var(--bg-alt);
    padding: .25rem .5rem;
    border-radius: 3px;
    max-width: 55%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.panel__row--input .panel__label { align-self: center; }
.panel__value--accent {
    color: var(--ink);
    position: relative;
    padding-left: 1rem;
}
.panel__value--accent::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
}
.panel__progress {
    height: 4px;
    margin: 1rem 0 1rem;
    background: var(--bg-alt);
    border-radius: 2px;
    overflow: hidden;
}
.panel__progress-bar {
    width: 78%;
    height: 100%;
    background: var(--ink);
}
.panel__actions { display: flex; gap: .5rem; }
.panel__btn {
    flex: 1;
    padding: .65rem .9rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    font-size: var(--step-0);
    background: var(--bg-elev);
    transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.panel__btn:hover { border-color: var(--ink); }
.panel__btn--primary {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
}
.panel__btn--primary:hover { background: #000; }

/* =========================================================
   TICKER
   ========================================================= */
.ticker {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    overflow: hidden;
    background: var(--bg);
}
.ticker__track {
    display: flex;
    gap: 2rem;
    padding-block: 1rem;
    white-space: nowrap;
    font-family: var(--font-mono);
    font-size: var(--step-0);
    color: var(--ink-mute);
    animation: ticker 60s linear infinite;
}
.ticker__track span:nth-child(odd) { color: var(--ink); }
@keyframes ticker {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
    .ticker__track { animation: none; }
}

/* =========================================================
   CAPABILITIES
   ========================================================= */
.caps {
    display: grid;
    grid-template-columns: 1fr;
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}
@media (min-width: 700px) {
    .caps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1100px) {
    .caps { grid-template-columns: repeat(4, 1fr); }
}
.cap {
    position: relative;
    padding: 2rem 1.75rem 2.25rem;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    transition: background var(--dur) var(--ease);
    display: flex;
    flex-direction: column;
    gap: .85rem;
    min-height: 240px;
}
.cap:hover { background: var(--bg-elev); }
.cap__num {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-quiet);
    letter-spacing: .04em;
}
.cap__title {
    font-size: var(--step-3);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.15;
}
.cap__body {
    color: var(--ink-mute);
    font-size: var(--step-0);
    line-height: 1.55;
    flex: 1;
}
.cap__tag {
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
    text-transform: uppercase;
    letter-spacing: .04em;
    padding: .25rem .55rem;
    border: 1px solid var(--line);
    border-radius: 999px;
}

/* =========================================================
   WORKFLOW
   ========================================================= */
.flow {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border-top: 1px solid var(--line);
}
@media (min-width: 900px) {
    .flow { grid-template-columns: repeat(3, 1fr); }
}
.flow__step {
    padding: 2.25rem 2rem 2.5rem;
    border-bottom: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: transparent;
}
@media (min-width: 900px) {
    .flow__step { border-right: 1px solid var(--line); border-bottom: 0; }
    .flow__step:last-child { border-right: 0; }
}
.flow__head { display: flex; align-items: baseline; gap: 1rem; }
.flow__num {
    font-family: var(--font-mono);
    font-size: var(--step-2);
    color: var(--ink-quiet);
}
.flow__title {
    font-size: clamp(1.6rem, 3vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}
.flow__body {
    color: var(--ink-mute);
    max-width: 38ch;
}
.flow__list {
    list-style: none;
    margin-top: .25rem;
    border-top: 1px solid var(--line);
}
.flow__list li {
    padding: .65rem 0;
    border-bottom: 1px solid var(--line-soft);
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-2);
    display: flex;
    align-items: center;
    gap: .65rem;
}
.flow__list li::before {
    content: "→";
    color: var(--ink-quiet);
}

/* =========================================================
   INTEGRATION
   ========================================================= */
.integration {
    display: grid;
    gap: 3rem;
    grid-template-columns: 1fr;
    align-items: start;
}
@media (min-width: 1000px) {
    .integration { grid-template-columns: 1fr 1.15fr; gap: 4rem; }
}
.integration__copy .lede { margin-bottom: 2rem; }

.kv {
    display: grid;
    grid-template-columns: 1fr;
    border-top: 1px solid var(--line);
}
.kv__row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    align-items: center;
    padding: .85rem 0;
    border-bottom: 1px solid var(--line-soft);
    font-size: var(--step-0);
}
.kv dt {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.kv dd { color: var(--ink); }

.integration__cta { margin-top: 2rem; }

/* Window mock */
.window {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-elev);
}
.window__bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: .65rem .9rem;
    border-bottom: 1px solid var(--line-soft);
    background: var(--bg-alt);
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
}
.window__buttons { display: inline-flex; gap: .35rem; }
.window__buttons span {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--line);
    border: 1px solid var(--line);
}
.window__title { letter-spacing: .02em; }
.window__body {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 380px;
}
@media (min-width: 700px) {
    .window__body { grid-template-columns: 1fr 240px; }
}
.window__viewport {
    position: relative;
    background:
        linear-gradient(180deg, #ecebe4 0%, #e2e0d6 100%);
    overflow: hidden;
}
.window__hint {
    position: absolute;
    top: .9rem; left: .9rem;
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.grid-floor {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 32px 32px;
    background-position: -1px -1px;
    mask-image: radial-gradient(ellipse at 50% 75%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 75%, #000 30%, transparent 75%);
    opacity: .8;
}
.gizmo {
    position: absolute;
    left: 50%; top: 55%;
    transform: translate(-50%, -50%);
    width: 120px; height: 120px;
    border: 1px solid var(--ink);
    background: var(--bg-elev);
    box-shadow:
        0 1px 0 var(--ink),
        12px 12px 0 -1px var(--bg-elev),
        12px 12px 0 var(--ink);
}
.window__sidebar {
    border-top: 1px solid var(--line-soft);
    padding: 1rem;
    background: var(--bg-elev);
    display: flex;
    flex-direction: column;
    gap: .55rem;
}
@media (min-width: 700px) {
    .window__sidebar { border-top: 0; border-left: 1px solid var(--line-soft); }
}
.side-section__title {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
    text-transform: uppercase;
    letter-spacing: .05em;
    display: block;
    padding-bottom: .5rem;
    border-bottom: 1px solid var(--line-soft);
    margin-bottom: .25rem;
}
.side-row {
    display: flex;
    justify-content: space-between;
    font-size: var(--step--1);
    padding: .35rem 0;
}
.side-row span { color: var(--ink-mute); font-family: var(--font-mono); }
.side-row b { color: var(--ink); font-weight: 500; }
.side-bar {
    margin-top: .25rem;
    height: 4px;
    background: var(--bg-alt);
    border-radius: 2px;
    overflow: hidden;
}
.side-bar i { display: block; width: 62%; height: 100%; background: var(--ink); }
.side-actions { margin-top: auto; display: flex; gap: .4rem; }

/* =========================================================
   SHOWCASE GALLERY
   ========================================================= */
.gallery {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}
@media (min-width: 700px) {
    .gallery {
        grid-template-columns: repeat(6, 1fr);
        grid-auto-rows: 220px;
    }
    .tile           { grid-column: span 3; }
    .tile--tall     { grid-column: span 3; grid-row: span 2; }
    .tile--wide     { grid-column: span 4; }
    .tile:nth-child(2),
    .tile:nth-child(3) { grid-column: span 3; }
    .tile:nth-child(5) { grid-column: span 2; }
}

.tile {
    position: relative;
    overflow: hidden;
    background: var(--bg-elev);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
}
.tile__media {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 220px;
    background:
        repeating-linear-gradient(
            45deg,
            #e9e6dc 0 12px,
            #e1ddd1 12px 24px
        );
    transition: transform .6s var(--ease), filter var(--dur) var(--ease);
}
.tile__media::before {
    content: attr(data-label);
    position: absolute;
    top: 1rem; left: 1rem;
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink);
    background: var(--bg);
    padding: .2rem .5rem;
    border-radius: 3px;
    border: 1px solid var(--line);
}
.tile__media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 40%, rgba(0,0,0,.06), transparent 60%);
}
.tile:hover .tile__media { transform: scale(1.02); }

.tile__cap {
    position: absolute;
    left: 1rem; right: 1rem; bottom: 1rem;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: .55rem .75rem;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    font-size: var(--step--1);
}
.tile__cap span { color: var(--ink); font-weight: 500; }
.tile__cap em {
    font-style: normal;
    font-family: var(--font-mono);
    color: var(--ink-mute);
}

/* =========================================================
   DOCS
   ========================================================= */
.docs {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}
@media (min-width: 700px)  { .docs { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .docs { grid-template-columns: repeat(3, 1fr); } }

.doc {
    display: flex;
    flex-direction: column;
    gap: .75rem;
    padding: 1.75rem 1.5rem 1.5rem;
    background: var(--bg-elev);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    min-height: 220px;
    transition: transform var(--dur) var(--ease),
                border-color var(--dur) var(--ease),
                background var(--dur) var(--ease);
}
.doc:hover {
    transform: translateY(-2px);
    border-color: var(--ink);
}
.doc__cat {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.doc__title {
    font-size: var(--step-2);
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.25;
}
.doc__body {
    color: var(--ink-mute);
    font-size: var(--step-0);
    flex: 1;
}
.doc__meta {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-quiet);
}

.docs__more {
    display: inline-block;
    margin-top: 2rem;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--ink);
    font-size: var(--step-1);
    transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.docs__more:hover { transform: translateX(2px); }

/* =========================================================
   FAQ
   ========================================================= */
.faq__list {
    border-top: 1px solid var(--line);
}
.qa {
    border-bottom: 1px solid var(--line);
}
.qa summary {
    list-style: none;
    cursor: pointer;
    padding: 1.25rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    font-weight: 500;
    color: var(--ink);
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
    content: "+";
    font-family: var(--font-mono);
    font-size: 1.4rem;
    color: var(--ink-mute);
    transition: transform var(--dur) var(--ease);
}
.qa[open] summary::after { content: "−"; }
.qa p {
    color: var(--ink-mute);
    padding: 0 0 1.5rem;
    max-width: 70ch;
}

/* =========================================================
   CTA
   ========================================================= */
.cta { background: var(--ink); color: var(--bg); border-top: 1px solid var(--ink); }
.cta .eyebrow { color: rgba(255,255,255,.55); }
.cta .display em { background: var(--accent); color: var(--accent-ink); }
.cta__inner { text-align: left; max-width: 70ch; }
.cta__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2.5rem; }
.cta__note {
    margin-top: 1.5rem;
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: rgba(255,255,255,.55);
}
.cta .btn--solid { background: var(--accent); color: var(--accent-ink); }
.cta .btn--solid:hover { background: #e2ee48; }
.cta .btn--ghost { color: var(--bg); border-color: rgba(255,255,255,.2); }
.cta .btn--ghost:hover { border-color: var(--bg); background: transparent; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
    background: var(--bg);
    border-top: 1px solid var(--line);
    padding-block: 4rem 2rem;
}
.footer__grid {
    display: grid;
    gap: 2.5rem;
    grid-template-columns: 1fr;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--line);
}
@media (min-width: 700px)  { .footer__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .footer__grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; } }

.footer__brand {
    display: flex;
    flex-direction: column;
    gap: .35rem;
}
.footer__brand .nav__mark { font-size: 1.2rem; margin-bottom: .25rem; }
.footer__brand h3 {
    font-size: var(--step-3);
    font-weight: 700;
    letter-spacing: -0.015em;
}
.footer__brand p { color: var(--ink-mute); }

.footer__col {
    display: flex;
    flex-direction: column;
    gap: .65rem;
}
.footer__col h4 {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--ink-mute);
    margin-bottom: .35rem;
}
.footer__col a {
    color: var(--ink);
    transition: color var(--dur) var(--ease);
}
.footer__col a:hover { color: var(--ink-mute); }

.footer__legal {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1.5rem;
    font-family: var(--font-mono);
    font-size: var(--step--1);
    color: var(--ink-mute);
}

/* =========================================================
   Scroll reveal (very subtle)
   ========================================================= */
.reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity .6s var(--ease), transform .6s var(--ease);
    will-change: opacity, transform;
}
.reveal.is-in {
    opacity: 1;
    transform: none;
}
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
}

/* =========================================================
   Responsive minor tweaks
   ========================================================= */
@media (max-width: 520px) {
    :root { --gutter: 1.25rem; }
    .nav__inner { height: 56px; }
    .nav.is-open .nav__menu,
    .nav.is-open .nav__actions { top: 56px; }
}

/* =========================================================
   ENHANCEMENTS — dark theme, live hero, tilt, theme toggle
   ========================================================= */

html { color-scheme: light; }
html[data-theme="dark"] { color-scheme: dark; }

html[data-theme="dark"] {
    --bg:        #14130f;
    --bg-elev:   #1c1b15;
    --bg-alt:    #0e0d0a;
    --ink:       #f2f0e8;
    --ink-2:     #dcdacf;
    --ink-mute:  #a6a49a;
    --ink-quiet: #74726a;
    --line:      #353329;
    --line-soft: #28261f;
}

body,
.nav, .panel, .cap, .btn,
section, header, footer {
    transition: background-color .4s var(--ease), color .4s var(--ease),
                border-color .4s var(--ease);
}

/* ---------- Live hero background canvas ---------- */
.hero { position: relative; overflow: hidden; isolation: isolate; }
.hero__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: .9;
}
.hero__grid { position: relative; z-index: 1; }

/* ---------- Theme toggle ---------- */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    background: none;
    border: 0;
    padding: 0;
    margin-right: .9rem;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.theme-toggle__track {
    position: relative;
    width: 44px;
    height: 24px;
    border-radius: 999px;
    background: var(--line);
    border: 1px solid var(--line);
    transition: background-color var(--dur) var(--ease);
}
.theme-toggle__thumb {
    position: absolute;
    top: 50%;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-elev);
    transform: translateY(-50%);
    transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
    box-shadow: 0 1px 3px rgba(0,0,0,.25);
}
.theme-toggle__thumb::before {
    content: "";
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    transition: opacity var(--dur) var(--ease);
}
html[data-theme="dark"] .theme-toggle__track { background: var(--accent); }
html[data-theme="dark"] .theme-toggle__thumb { transform: translate(20px, -50%); background: #14130f; }
html[data-theme="dark"] .theme-toggle__thumb::before { opacity: 1; }

/* ---------- Tilt + magnet ---------- */
.tilt { transform-style: preserve-3d; will-change: transform; }
.tilt__inner { transform: translateZ(28px); }
.btn, .panel, .cap { transition: transform .18s var(--ease); }

/* ---------- Typewriter caret ---------- */
.type-caret::after {
    content: "▍";
    margin-left: 1px;
    color: var(--accent);
    animation: caretBlink 1s steps(1) infinite;
}
@keyframes caretBlink { 50% { opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
    .hero__bg { display: none; }
    .type-caret::after { animation: none; }
    .btn, .panel, .cap { transition: none; }
}


/* =========================================================
   INTERACTIVE DEMO (Text to 3D)
   ========================================================= */
.demo {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2rem;
    align-items: stretch;
}
.demo__stage {
    position: relative;
    border: 1px solid var(--line);
    border-radius: 14px;
    background:
        radial-gradient(120% 120% at 30% 10%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 60%),
        var(--bg-elev);
    min-height: 340px;
    overflow: hidden;
    display: flex;
}
.demo__svg { width: 100%; height: 100%; min-height: 340px; display: block; }
.demo__svg .draw {
    stroke: var(--ink);
    stroke-width: 1.8;
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    transition: stroke-dashoffset 1.4s var(--ease);
}
.demo__svg .fill { fill: var(--accent); fill-opacity: 0; transition: fill-opacity .9s ease .3s; }
.demo__obj { display: none; }
.demo__obj.is-active { display: block; }
.demo__obj.is-drawn .draw { stroke-dashoffset: 0; }
.demo__obj.is-filled .fill { fill-opacity: 0.22; }
.demo__badge {
    position: absolute; top: 14px; left: 14px;
    font: 500 0.7rem/1 var(--mono, monospace);
    letter-spacing: .06em; text-transform: uppercase;
    color: var(--ink-mute);
    background: color-mix(in srgb, var(--bg-elev) 70%, transparent);
    border: 1px solid var(--line); border-radius: 999px;
    padding: .35rem .6rem; backdrop-filter: blur(4px);
}
.demo__status {
    position: absolute; bottom: 14px; left: 14px;
    font: 500 0.78rem/1 var(--mono, monospace);
    color: var(--accent-ink);
    background: var(--accent); border-radius: 999px;
    padding: .35rem .7rem;
}
.demo__controls { display: flex; flex-direction: column; gap: 1rem; justify-content: center; }
.demo__label {
    display: block; font: 500 0.72rem/1 var(--mono, monospace);
    letter-spacing: .08em; text-transform: uppercase; color: var(--ink-mute);
    margin-bottom: .5rem;
}
.demo__input {
    width: 100%; box-sizing: border-box;
    background: var(--bg-elev); color: var(--ink);
    border: 1px solid var(--line); border-radius: 10px;
    padding: .85rem 1rem; font-size: 1rem; font-family: inherit;
    transition: border-color var(--dur) var(--ease);
}
.demo__input:focus { outline: none; border-color: var(--accent); }
.demo__chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
    font: 500 0.82rem/1 inherit; cursor: pointer;
    background: var(--bg); color: var(--ink-2);
    border: 1px solid var(--line); border-radius: 999px;
    padding: .5rem .85rem; transition: all var(--dur) var(--ease);
}
.chip:hover { border-color: var(--accent); color: var(--ink); transform: translateY(-1px); }
.chip.is-active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.demo__actions { display: flex; gap: .6rem; }
.demo__note { font-size: .82rem; color: var(--ink-quiet); margin: 0; }

/* =========================================================
   BEFORE / AFTER SLIDER (Image to 3D)
   ========================================================= */
.ba {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    border: 1px solid var(--line);
    border-radius: 14px;
    overflow: hidden;
    user-select: none;
    cursor: ew-resize;
    --pos: 50%;
    touch-action: none;
}
.ba__layer { position: absolute; inset: 0; }
.ba__after { color: var(--accent); background: var(--bg-alt); }
.ba__after .ba__svg { color: var(--accent); }
.ba__after .ba__mesh { stroke: var(--accent); stroke-width: 1.4; }
.ba__before { clip-path: inset(0 calc(100% - var(--pos)) 0 0); }
.ba__svg { width: 100%; height: 100%; display: block; }
.ba__tag {
    position: absolute; bottom: 14px;
    font: 500 0.72rem/1 var(--mono, monospace);
    letter-spacing: .06em; text-transform: uppercase;
    padding: .4rem .65rem; border-radius: 999px;
}
.ba__tag--left  { left: 14px; background: #1d1a14; color: #f2ede2; }
.ba__tag--right { right: 14px; background: var(--accent); color: var(--accent-ink); }
.ba__handle {
    position: absolute; top: 0; bottom: 0;
    left: var(--pos); width: 2px;
    background: var(--accent);
    transform: translateX(-1px);
    pointer-events: none;
}
.ba__grip {
    position: absolute; top: 50%; left: 50%;
    width: 42px; height: 42px;
    transform: translate(-50%, -50%);
    background: var(--accent); color: var(--accent-ink);
    border-radius: 50%;
    display: grid; place-items: center;
    box-shadow: 0 4px 14px rgba(0,0,0,.25);
}
.ba__grip::before { content: "\2194"; font-size: 1.2rem; font-weight: 700; }
.ba:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

@media (max-width: 820px) {
    .demo { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    .demo__svg .draw { transition: none; stroke-dashoffset: 0; }
    .demo__svg .fill { transition: none; }
}