:root {
    color-scheme: dark;
    --ink: #f5f3ec;
    --muted: rgba(245, 243, 236, 0.62);
    --line: rgba(255, 255, 255, 0.18);
    --acid: #dfff55;
    --coral: #ff684d;
    --cyan: #92f3ff;
    --violet: #b6a1ff;
    --ease: cubic-bezier(0.22, 0.9, 0.32, 1);
}

* {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    min-height: 100%;
    background: #090b10;
}

body {
    min-width: 320px;
    min-height: 100vh;
    margin: 0;
    overflow-x: clip;
    color: var(--ink);
    background: #090b10;
    font-family: "Arial Narrow", "Inter", "SF Pro Display", "Segoe UI", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
}

body.is-grabbing,
body.is-grabbing * {
    cursor: grabbing !important;
    user-select: none !important;
}

a {
    color: inherit;
    text-decoration: none;
}

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

button,
a,
[tabindex] {
    -webkit-tap-highlight-color: transparent;
}

::selection {
    color: #090b10;
    background: var(--acid);
}

:focus-visible {
    outline: 2px solid var(--acid);
    outline-offset: 4px;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    padding: 10px 15px;
    border-radius: 999px;
    color: #080b10;
    background: #fff;
    font-size: 0.78rem;
    font-weight: 800;
    transform: translateY(-170%);
    transition: transform 180ms ease;
}

.skip-link:focus {
    transform: none;
}

.lab-nav {
    position: fixed;
    top: max(15px, env(safe-area-inset-top));
    left: 50%;
    z-index: 100;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    width: min(1180px, calc(100% - 28px));
    min-height: 54px;
    align-items: center;
    padding: 6px 10px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    background: rgba(8, 10, 16, 0.58);
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.09), 0 20px 45px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
    transform: translateX(-50%);
}

.lab-nav > a {
    display: inline-flex;
    width: fit-content;
    min-height: 40px;
    align-items: center;
    gap: 8px;
    padding: 0 13px;
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.79rem;
    font-weight: 750;
    transition: color 180ms ease, background 180ms ease, transform 180ms var(--ease);
}

.lab-nav > a:hover,
.lab-nav > a:focus-visible {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-2px);
}

.lab-nav p,
.lab-nav b {
    margin: 0;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.63rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.lab-nav p {
    display: flex;
    align-items: center;
    gap: 9px;
}

.lab-nav p i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--acid);
    box-shadow: 0 0 14px var(--acid);
}

.lab-nav b {
    justify-self: end;
    padding-right: 13px;
}

.nav-dark {
    border-color: rgba(16, 17, 17, 0.16);
    background: rgba(245, 244, 236, 0.64);
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.55), 0 20px 45px rgba(0, 0, 0, 0.08);
}

.nav-dark > a,
.nav-dark p,
.nav-dark b {
    color: rgba(12, 13, 14, 0.68);
}

.nav-dark > a:hover,
.nav-dark > a:focus-visible {
    color: #0b0c0d;
    background: rgba(0, 0, 0, 0.07);
}

.nav-dark p i {
    background: #ff4d35;
    box-shadow: 0 0 12px rgba(255, 77, 53, 0.68);
}

.lab-kicker {
    margin: 0 0 16px;
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.lab-copy h1,
.inertia-copy h1,
.carousel-heading h1,
.depth-title h1,
.zoom-copy h1,
.stack-copy h1,
.morph-copy h1,
.horizontal-panel h1 {
    margin: 0;
    font-size: clamp(3.3rem, 8vw, 8rem);
    font-weight: 900;
    line-height: 0.82;
    letter-spacing: -0.075em;
}

.lab-copy h1 em,
.inertia-copy h1 em,
.carousel-heading h1 em,
.depth-title h1 em,
.zoom-copy h1 em,
.stack-copy h1 em,
.morph-copy h1 em,
.horizontal-panel h1 em {
    color: var(--acid);
    font-style: normal;
}

.lab-next {
    position: absolute;
    right: max(24px, env(safe-area-inset-right));
    bottom: max(22px, env(safe-area-inset-bottom));
    z-index: 80;
    display: grid;
    grid-template-columns: auto 20px;
    min-width: 220px;
    padding: 14px 17px;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: rgba(8, 10, 16, 0.56);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: border-color 180ms ease, background 180ms ease, transform 180ms var(--ease);
}

.lab-next:hover,
.lab-next:focus-visible {
    border-color: rgba(255, 255, 255, 0.42);
    background: rgba(16, 19, 27, 0.86);
    transform: translateY(-3px);
}

.lab-next small,
.lab-next span {
    display: block;
}

.lab-next small {
    margin-bottom: 4px;
    color: var(--muted);
    font-size: 0.56rem;
    font-weight: 800;
    letter-spacing: 0.16em;
}

.lab-next span {
    font-size: 0.78rem;
    font-weight: 800;
}

.dark-next {
    border-color: rgba(0, 0, 0, 0.16);
    color: #101112;
    background: rgba(255, 255, 255, 0.62);
}

.dark-next small {
    color: rgba(0, 0, 0, 0.54);
}

.dark-next:hover,
.dark-next:focus-visible {
    border-color: rgba(0, 0, 0, 0.36);
    background: rgba(255, 255, 255, 0.88);
}

.gesture-chip {
    position: absolute;
    right: max(24px, env(safe-area-inset-right));
    top: 50%;
    z-index: 70;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    padding: 9px 13px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.7);
    background: rgba(7, 9, 14, 0.48);
    font-size: 0.56rem;
    letter-spacing: 0.14em;
    backdrop-filter: blur(10px);
    transform: translateY(-50%);
}

.gesture-chip span {
    color: var(--acid);
    font-size: 1rem;
}

.dark-chip {
    border-color: rgba(0, 0, 0, 0.16);
    color: rgba(0, 0, 0, 0.62);
    background: rgba(255, 255, 255, 0.6);
}

.no-script {
    position: fixed;
    left: 50%;
    bottom: 18px;
    z-index: 300;
    margin: 0;
    padding: 10px 16px;
    border-radius: 999px;
    color: #050608;
    background: #fff;
    font-size: 0.76rem;
    transform: translateX(-50%);
}

/* 19 — Infinite pannable canvas */

body[data-effect="infinite-canvas"] {
    overflow: hidden;
    background: #080b10;
}

.infinite-lab {
    position: relative;
    width: 100vw;
    height: 100svh;
    overflow: hidden;
    isolation: isolate;
}

.infinite-viewport {
    position: absolute;
    inset: 0;
    overflow: hidden;
    cursor: grab;
    touch-action: none;
    background:
        radial-gradient(circle at 75% 20%, rgba(108, 106, 255, 0.16), transparent 34rem),
        #080b10;
}

.infinite-viewport::before {
    position: absolute;
    inset: -80px;
    content: "";
    opacity: 0.55;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
    background-position: var(--grid-x, 0px) var(--grid-y, 0px);
    background-size: 56px 56px;
    will-change: background-position;
}

.infinite-plane {
    position: absolute;
    top: 50%;
    left: 50%;
    display: grid;
    grid-template-columns: repeat(4, minmax(230px, 330px));
    grid-auto-rows: minmax(185px, 240px);
    gap: clamp(40px, 6vw, 92px);
    width: max-content;
    transform: translate3d(calc(-50% + var(--pan-x, 0px)), calc(-50% + var(--pan-y, 0px)), 0);
    will-change: transform;
}

.canvas-tile {
    position: relative;
    width: clamp(230px, 22vw, 330px);
    height: clamp(185px, 17vw, 240px);
    margin: 0;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 8px;
    background: #151923;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.34);
}

.canvas-tile:nth-child(2n) {
    transform: translateY(42px) rotate(1.5deg);
}

.canvas-tile:nth-child(3n) {
    transform: translateY(-35px) rotate(-1.2deg);
}

.canvas-tile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 400ms var(--ease);
}

.canvas-tile:hover img {
    transform: scale(1.05);
}

.canvas-tile figcaption {
    position: absolute;
    right: 9px;
    bottom: 9px;
    left: 9px;
    display: flex;
    align-items: center;
    min-height: 28px;
    padding: 0 9px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(0, 0, 0, 0.46);
    font-size: 0.53rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    backdrop-filter: blur(8px);
}

.tile-word,
.tile-data,
.tile-ring {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 22px;
}

.tile-word {
    color: #11130c;
    background: var(--acid);
}

.tile-word strong {
    font-size: clamp(2.6rem, 4vw, 4.6rem);
    line-height: 0.8;
    letter-spacing: -0.07em;
}

.tile-word span {
    align-self: flex-end;
    font-size: 2rem;
}

.tile-acid {
    color: #fff;
    background: #6f55ff;
}

.tile-data {
    background: #f2efe6;
    color: #111217;
}

.tile-data span,
.tile-data small {
    font-size: 0.58rem;
    font-weight: 800;
    letter-spacing: 0.16em;
}

.tile-data strong {
    font-size: 3.2rem;
    letter-spacing: -0.06em;
}

.tile-ring {
    align-items: center;
    justify-content: center;
    color: #0d1015;
    text-align: center;
    background: #75dfff;
}

.tile-ring i {
    position: absolute;
    width: 58%;
    aspect-ratio: 1;
    border: 1px solid #0d1015;
    border-radius: 50%;
    box-shadow: 0 0 0 14px transparent, 0 0 0 15px rgba(13, 16, 21, 0.28);
}

.tile-ring b {
    z-index: 1;
    font-size: 1rem;
    line-height: 0.9;
    letter-spacing: 0.14em;
}

.tile-coral {
    background: var(--coral);
}

.canvas-origin {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 12;
    width: 1px;
    height: 1px;
    pointer-events: none;
}

.canvas-origin span,
.canvas-origin span::after {
    position: absolute;
    width: 34px;
    height: 1px;
    background: rgba(255, 255, 255, 0.58);
    content: "";
    transform: translateX(-17px);
}

.canvas-origin span::after {
    transform: rotate(90deg);
}

.canvas-origin b {
    position: absolute;
    color: rgba(255, 255, 255, 0.42);
    font-size: 0.5rem;
    letter-spacing: 0.12em;
    white-space: nowrap;
}

.canvas-origin b:nth-of-type(1) {
    top: 9px;
    left: 11px;
}

.canvas-origin b:nth-of-type(2) {
    top: 21px;
    left: 11px;
}

.edge-vignette {
    position: absolute;
    inset: 0;
    z-index: 20;
    pointer-events: none;
    box-shadow: inset 0 0 120px 30px rgba(0, 0, 0, 0.45);
}

.lab-copy {
    position: absolute;
    z-index: 40;
    max-width: min(550px, calc(100% - 48px));
    pointer-events: none;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.55);
}

.copy-bottom-left {
    bottom: max(28px, env(safe-area-inset-bottom));
    left: max(28px, env(safe-area-inset-left));
}

.lab-copy h1 {
    font-size: clamp(3rem, 6.8vw, 6.8rem);
}

.lab-copy > p:last-child {
    max-width: 470px;
    margin: 18px 0 0;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.84rem;
    line-height: 1.75;
}

/* 20 — Inertial drag */

body[data-effect="inertial-drag"] {
    color: #111214;
    background: #e7ff57;
}

.inertia-lab {
    position: relative;
    display: grid;
    grid-template-columns: minmax(310px, 0.72fr) minmax(460px, 1.28fr);
    min-height: 100svh;
    padding: 116px max(28px, calc((100vw - 1280px) / 2)) 28px;
    overflow: hidden;
    gap: clamp(24px, 5vw, 80px);
    background:
        linear-gradient(90deg, rgba(0, 0, 0, 0.07) 1px, transparent 1px),
        #e7ff57;
    background-size: 8.333vw 100%;
}

.inertia-copy {
    align-self: center;
    z-index: 3;
}

.inertia-copy h1 {
    font-size: clamp(4rem, 8vw, 8.6rem);
}

.inertia-copy h1 em {
    color: #ff4d35;
}

.inertia-copy > p:nth-of-type(2) {
    max-width: 480px;
    margin: 24px 0 34px;
    color: rgba(9, 11, 13, 0.64);
    font-size: 0.92rem;
    line-height: 1.8;
}

.motion-readout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    max-width: 500px;
    margin: 0;
    border-top: 1px solid rgba(0, 0, 0, 0.24);
    border-bottom: 1px solid rgba(0, 0, 0, 0.24);
}

.motion-readout div {
    min-width: 0;
    padding: 14px 10px 14px 0;
}

.motion-readout div + div {
    padding-left: 13px;
    border-left: 1px solid rgba(0, 0, 0, 0.18);
}

.motion-readout dt {
    margin-bottom: 8px;
    font-size: 0.5rem;
    font-weight: 800;
    letter-spacing: 0.13em;
}

.motion-readout dd {
    margin: 0;
    font-family: ui-monospace, "Cascadia Mono", monospace;
    font-size: clamp(0.9rem, 2vw, 1.35rem);
    font-weight: 800;
}

.inertia-arena {
    position: relative;
    min-height: min(72vh, 720px);
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.28);
    border-radius: 30px;
    background: rgba(247, 245, 235, 0.4);
    box-shadow: inset 0 0 0 7px rgba(255, 255, 255, 0.2);
    touch-action: none;
}

.arena-grid {
    position: absolute;
    inset: 0;
    opacity: 0.36;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.14) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.14) 1px, transparent 1px);
    background-size: 48px 48px;
}

.drag-puck {
    position: absolute;
    top: 50%;
    left: 50%;
    width: clamp(190px, 25vw, 330px);
    aspect-ratio: 0.78;
    padding: 10px;
    border-radius: 17px;
    color: #f7f7f2;
    background: #101217;
    box-shadow: 0 30px 55px rgba(31, 33, 20, 0.3);
    cursor: grab;
    transform: translate3d(calc(-50% + var(--puck-x, 0px)), calc(-50% + var(--puck-y, 0px)), 0) rotate(var(--puck-rotate, 0deg));
    will-change: transform;
}

.drag-puck::after {
    position: absolute;
    inset: 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    content: "";
    pointer-events: none;
}

.drag-puck img {
    width: 100%;
    height: calc(100% - 47px);
    border-radius: 10px;
    object-fit: cover;
    pointer-events: none;
}

.drag-puck > span {
    position: absolute;
    top: 50%;
    left: 50%;
    display: grid;
    width: 62px;
    aspect-ratio: 1;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 50%;
    color: #fff;
    background: rgba(0, 0, 0, 0.3);
    font-size: 0.54rem;
    font-weight: 900;
    letter-spacing: 0.16em;
    pointer-events: none;
    backdrop-filter: blur(8px);
    transform: translate(-50%, -70%);
}

.drag-puck footer {
    display: flex;
    height: 47px;
    align-items: center;
    justify-content: space-between;
    padding: 0 5px;
    font-size: 0.54rem;
    letter-spacing: 0.1em;
}

.drag-puck footer i {
    color: var(--acid);
    font-style: normal;
}

.arena-label {
    position: absolute;
    z-index: 1;
    font-size: 0.5rem;
    font-weight: 800;
    letter-spacing: 0.16em;
}

.label-top {
    top: 14px;
    left: 18px;
}

.label-side {
    right: -29px;
    bottom: 92px;
    transform: rotate(-90deg);
}

/* 21 — Drag-driven parallax carousel */

body[data-effect="drag-parallax-carousel"] {
    overflow: hidden;
    background: #171713;
}

.carousel-lab {
    position: relative;
    min-height: 100svh;
    padding: 110px 0 28px;
    overflow: hidden;
    background:
        radial-gradient(circle at 18% 12%, rgba(255, 106, 77, 0.16), transparent 30rem),
        #171713;
}

.carousel-heading {
    position: absolute;
    top: 17vh;
    left: max(28px, calc((100vw - 1280px) / 2));
    z-index: 5;
    width: min(520px, 42vw);
    pointer-events: none;
}

.carousel-heading h1 {
    font-size: clamp(3.5rem, 7vw, 7.5rem);
}

.carousel-heading h1 em {
    color: #ff795c;
}

.carousel-heading > p:last-child {
    max-width: 450px;
    margin: 20px 0 0;
    color: var(--muted);
    font-size: 0.84rem;
    line-height: 1.75;
}

.carousel-window {
    position: absolute;
    top: 35%;
    right: 0;
    bottom: 11%;
    left: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    overflow: hidden;
    cursor: grab;
    touch-action: pan-y;
}

.carousel-track {
    display: flex;
    width: max-content;
    align-items: center;
    gap: clamp(18px, 2.5vw, 38px);
    padding: 0 22vw;
    transform: translate3d(var(--carousel-x, 0px), 0, 0);
    will-change: transform;
}

.parallax-card {
    position: relative;
    flex: 0 0 auto;
    width: clamp(220px, 26vw, 390px);
    height: clamp(270px, 42vh, 430px);
    margin: 0;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.17);
    border-radius: 9px;
    background: #282821;
    box-shadow: 0 24px 55px rgba(0, 0, 0, 0.35);
    transform: perspective(900px) rotateY(var(--card-rotate, 0deg)) translateY(var(--card-y, 0px));
    transform-origin: center;
    transition: border-color 180ms ease;
}

.parallax-card:nth-child(2n) {
    --card-y: -28px;
}

.parallax-card:hover {
    border-color: rgba(255, 255, 255, 0.42);
}

.parallax-photo {
    position: relative;
    height: calc(100% - 45px);
    overflow: hidden;
    border-radius: 4px;
}

.parallax-photo img {
    width: 122%;
    max-width: none;
    height: 100%;
    object-fit: cover;
    transform: translate3d(var(--image-shift, -9%), 0, 0) scale(1.06);
    will-change: transform;
    pointer-events: none;
}

.parallax-card .card-index {
    position: absolute;
    top: -47px;
    right: 4px;
    z-index: 2;
    color: rgba(255, 255, 255, 0.2);
    font-size: 4.2rem;
    font-weight: 900;
    letter-spacing: -0.08em;
    transform: translateX(var(--index-shift, 0px));
    will-change: transform;
}

.parallax-card footer {
    display: flex;
    height: 45px;
    align-items: center;
    justify-content: space-between;
}

.parallax-card footer b {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
}

.parallax-card footer small {
    color: rgba(255, 255, 255, 0.48);
    font-size: 0.48rem;
    letter-spacing: 0.12em;
}

.tall-card {
    height: clamp(300px, 47vh, 485px);
}

.wide-card {
    width: clamp(310px, 36vw, 520px);
}

.carousel-meter {
    position: absolute;
    bottom: 35px;
    left: max(28px, calc((100vw - 1280px) / 2));
    z-index: 30;
    width: min(320px, 32vw);
    height: 22px;
    border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.carousel-meter i {
    position: absolute;
    top: -2px;
    left: 0;
    width: var(--meter, 0%);
    height: 3px;
    background: #ff795c;
}

.carousel-meter span {
    display: block;
    padding-top: 8px;
    color: rgba(255, 255, 255, 0.45);
    font-size: 0.5rem;
    font-weight: 800;
    letter-spacing: 0.14em;
}

/* 22 — Vertical to horizontal scroll */

body[data-effect="horizontal-scroll"] {
    color: #111315;
    background: #eeece4;
}

.horizontal-lab {
    position: relative;
    height: 560vh;
}

.horizontal-sticky {
    position: sticky;
    top: 0;
    height: 100svh;
    overflow: hidden;
}

.horizontal-track {
    display: flex;
    width: 500vw;
    height: 100%;
    transform: translate3d(var(--horizontal-x, 0px), 0, 0);
    will-change: transform;
}

.horizontal-panel {
    position: relative;
    flex: 0 0 100vw;
    width: 100vw;
    height: 100%;
    overflow: hidden;
    padding: 120px max(28px, calc((100vw - 1180px) / 2)) 72px;
}

.horizontal-panel .panel-number {
    position: absolute;
    right: max(28px, calc((100vw - 1180px) / 2));
    bottom: 58px;
    font-size: clamp(5rem, 16vw, 14rem);
    font-weight: 900;
    line-height: 0.7;
    letter-spacing: -0.09em;
    opacity: 0.12;
}

.panel-intro {
    display: grid;
    align-items: center;
    background: #eeece4;
}

.panel-intro > div {
    max-width: 950px;
}

.panel-intro h1 {
    font-size: clamp(5rem, 13vw, 13rem);
}

.panel-intro h1 em {
    color: #ff4c2e;
}

.panel-intro > div > p:last-child {
    max-width: 500px;
    margin: 28px 0 0;
    color: rgba(0, 0, 0, 0.58);
    line-height: 1.8;
}

.panel-image {
    display: grid;
    place-items: center;
    color: #fff;
    background: #0d172d;
}

.panel-image > img {
    position: absolute;
    inset: -8%;
    width: 116%;
    max-width: none;
    height: 116%;
    object-fit: cover;
    filter: brightness(0.7) saturate(1.1);
    transform: translateX(var(--panel-image-x, 0px)) scale(1.08);
}

.panel-image::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.42), transparent 55%, rgba(0, 0, 0, 0.2));
    content: "";
}

.panel-image > div {
    z-index: 2;
    text-align: center;
}

.panel-image small {
    font-size: 0.62rem;
    font-weight: 800;
    letter-spacing: 0.2em;
}

.panel-image h2,
.panel-end h2 {
    margin: 12px 0 10px;
    font-size: clamp(5rem, 16vw, 15rem);
    line-height: 0.78;
    letter-spacing: -0.08em;
}

.panel-image p {
    margin: 0;
    color: rgba(255, 255, 255, 0.66);
}

.panel-quote {
    display: grid;
    place-items: center;
    color: #10120f;
    background: var(--acid);
}

.panel-quote blockquote {
    max-width: 1200px;
    margin: 0;
    font-size: clamp(3.4rem, 8.2vw, 8.8rem);
    font-weight: 900;
    line-height: 0.94;
    letter-spacing: -0.06em;
}

.panel-warm {
    background: #d95734;
}

.panel-end {
    display: grid;
    align-items: center;
    color: #fff;
    background: #6c56ff;
}

.panel-end > div {
    max-width: 1000px;
}

.panel-end h2 {
    font-size: clamp(4.3rem, 11vw, 11rem);
}

.panel-end p {
    color: rgba(255, 255, 255, 0.68);
}

.horizontal-progress {
    position: absolute;
    right: max(24px, env(safe-area-inset-right));
    bottom: max(28px, env(safe-area-inset-bottom));
    left: max(24px, env(safe-area-inset-left));
    z-index: 20;
    height: 19px;
    border-top: 1px solid currentColor;
    color: rgba(255, 255, 255, 0.48);
    mix-blend-mode: difference;
}

.horizontal-progress i {
    position: absolute;
    top: -2px;
    left: 0;
    width: var(--horizontal-progress, 0%);
    height: 3px;
    background: #fff;
}

.horizontal-progress b {
    position: absolute;
    top: 6px;
    right: 0;
    font-family: ui-monospace, monospace;
    font-size: 0.58rem;
    letter-spacing: 0.1em;
}

.scroll-cue {
    position: absolute;
    right: max(28px, env(safe-area-inset-right));
    top: 50%;
    z-index: 30;
    margin: 0;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.54rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    mix-blend-mode: difference;
    transform: translateY(-50%) rotate(90deg) translateX(50%);
    transform-origin: right center;
}

.horizontal-footer,
.depth-footer,
.zoom-footer,
.stack-footer,
.morph-footer {
    display: flex;
    min-height: 160px;
    align-items: center;
    justify-content: space-between;
    padding: 38px max(28px, calc((100vw - 1180px) / 2));
}

@media (max-width: 820px) {
    .lab-nav {
        grid-template-columns: 1fr auto;
        width: calc(100% - 20px);
    }

    .lab-nav p {
        display: none;
    }

    .lab-nav b {
        padding-right: 10px;
    }

    .lab-next {
        right: 14px;
        bottom: max(14px, env(safe-area-inset-bottom));
        min-width: 178px;
        padding: 11px 13px;
    }

    .lab-next span {
        max-width: 130px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .gesture-chip {
        top: auto;
        right: 14px;
        bottom: 78px;
        transform: none;
    }

    .infinite-plane {
        grid-template-columns: repeat(4, 220px);
        grid-auto-rows: 170px;
        gap: 44px;
    }

    .canvas-tile {
        width: 220px;
        height: 170px;
    }

    .copy-bottom-left {
        right: 18px;
        bottom: 104px;
        left: 18px;
    }

    .lab-copy h1 {
        font-size: clamp(2.8rem, 16vw, 5rem);
    }

    .lab-copy > p:last-child {
        display: none;
    }

    .inertia-lab {
        display: block;
        padding: 96px 14px 14px;
    }

    .inertia-copy {
        position: absolute;
        top: 102px;
        right: 20px;
        left: 20px;
        z-index: 5;
        pointer-events: none;
    }

    .inertia-copy h1 {
        font-size: clamp(3.3rem, 16vw, 6.5rem);
    }

    .inertia-copy > p:nth-of-type(2) {
        display: none;
    }

    .motion-readout {
        position: fixed;
        bottom: max(21px, env(safe-area-inset-bottom));
        left: 18px;
        z-index: 10;
        width: calc(100% - 220px);
        background: rgba(231, 255, 87, 0.7);
        backdrop-filter: blur(7px);
    }

    .inertia-arena {
        height: calc(100svh - 110px);
        min-height: 0;
        border-radius: 22px;
    }

    .drag-puck {
        width: clamp(155px, 43vw, 250px);
    }

    .carousel-heading {
        top: 104px;
        right: 20px;
        left: 20px;
        width: auto;
    }

    .carousel-heading h1 {
        font-size: clamp(3rem, 13vw, 5.4rem);
    }

    .carousel-heading > p:last-child {
        display: none;
    }

    .carousel-window {
        top: 33%;
        bottom: 15%;
    }

    .carousel-track {
        padding-right: 14vw;
        padding-left: 14vw;
    }

    .parallax-card {
        width: min(69vw, 300px);
        height: min(44vh, 380px);
    }

    .tall-card {
        height: min(48vh, 410px);
    }

    .wide-card {
        width: min(80vw, 390px);
    }

    .carousel-meter {
        bottom: 28px;
        left: 18px;
        width: calc(100% - 220px);
    }

    .horizontal-panel {
        padding: 104px 22px 64px;
    }

    .horizontal-panel .panel-number {
        right: 22px;
        bottom: 52px;
    }

    .panel-intro h1 {
        font-size: clamp(4.4rem, 20vw, 8rem);
    }

    .panel-image h2,
    .panel-end h2 {
        font-size: clamp(4.3rem, 20vw, 8rem);
    }

    .panel-quote blockquote {
        font-size: clamp(2.7rem, 11vw, 5.4rem);
    }

    .horizontal-footer,
    .depth-footer,
    .zoom-footer,
    .stack-footer,
    .morph-footer {
        min-height: 138px;
        padding: 26px 18px;
    }

    .horizontal-footer > p,
    .depth-footer > p,
    .zoom-footer > p,
    .stack-footer > p,
    .morph-footer > p {
        display: none;
    }

    .horizontal-footer a,
    .depth-footer a,
    .zoom-footer a,
    .stack-footer a,
    .morph-footer a {
        width: 100%;
    }

    .depth-title {
        top: 27%;
        right: 20px;
        left: 20px;
        max-width: none;
    }

    .depth-title h1 {
        font-size: clamp(3.5rem, 17vw, 6rem);
    }

    .depth-title > p:last-child {
        display: none;
    }

    .depth-portal {
        top: 62%;
        right: 50%;
        width: min(72vw, 360px);
        transform: translate(50%, -44%);
    }

    .depth-scale {
        right: 13px;
    }

    .zoom-frame {
        width: 84vw;
    }

    .zoom-copy h1 {
        font-size: clamp(3.7rem, 16vw, 6.8rem);
    }

    .stack-sticky {
        display: block;
        padding: 100px 18px 34px;
    }

    .stack-copy {
        position: absolute;
        top: 104px;
        left: 20px;
        z-index: 20;
        width: min(88vw, 550px);
        pointer-events: none;
    }

    .stack-copy h1 {
        font-size: clamp(3.6rem, 15vw, 6rem);
    }

    .stack-copy > p:nth-of-type(2) {
        display: none;
    }

    .stack-count {
        position: fixed;
        bottom: 24px;
        left: 20px;
    }

    .stack-scene {
        height: 100%;
    }

    .stack-card {
        width: min(58vw, 285px);
    }

    .stack-rail {
        right: -48px;
    }

    .morph-svg {
        top: 57%;
        right: 50%;
        width: min(105vw, 660px);
        height: min(66vh, 660px);
        transform: translate(50%, -50%) rotate(var(--morph-rotation, 0deg));
    }

    .morph-copy {
        top: 112px;
        right: 20px;
        left: 20px;
        max-width: none;
        transform: none;
    }

    .morph-copy h1 {
        font-size: clamp(3.2rem, 14vw, 5.5rem);
    }

    .morph-copy > p:last-child {
        display: none;
    }

    .morph-state {
        right: 22px;
        bottom: 78px;
    }

    .morph-timeline {
        right: 18px;
        bottom: 28px;
        left: 18px;
    }
}

@media (max-width: 520px) {
    .motion-readout {
        width: calc(100% - 220px);
    }

    .motion-readout div:nth-child(2) {
        display: none;
    }

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

    .inertia-copy h1 {
        font-size: 3.55rem;
    }

    .carousel-heading h1 {
        font-size: 3.45rem;
    }

    .horizontal-progress {
        bottom: 20px;
    }

    .zoom-copy .lab-kicker {
        display: none;
    }

    .stack-copy h1 {
        font-size: 3.6rem;
    }

    .stack-count b {
        font-size: 1.8rem;
    }

    .morph-copy h1 {
        font-size: 3.6rem;
    }
}

@media (max-height: 620px) and (orientation: landscape) {
    .lab-nav {
        top: 8px;
        min-height: 46px;
    }

    .lab-nav > a {
        min-height: 34px;
    }

    .lab-copy h1,
    .inertia-copy h1,
    .carousel-heading h1,
    .depth-title h1,
    .zoom-copy h1,
    .stack-copy h1,
    .morph-copy h1 {
        font-size: clamp(2.8rem, 9vw, 5rem);
    }

    .lab-copy > p:last-child,
    .inertia-copy > p:nth-of-type(2),
    .carousel-heading > p:last-child,
    .depth-title > p:last-child,
    .stack-copy > p:nth-of-type(2),
    .morph-copy > p:last-child {
        display: none;
    }

    .copy-bottom-left {
        bottom: 18px;
    }

    .inertia-lab,
    .stack-sticky {
        padding-top: 70px;
    }

    .inertia-arena {
        min-height: calc(100svh - 86px);
    }

    .carousel-heading {
        top: 70px;
    }

    .carousel-window {
        top: 28%;
        bottom: 12%;
    }

    .parallax-card {
        height: 54vh;
    }

    .horizontal-panel {
        padding-top: 75px;
    }

    .depth-title {
        top: 48%;
    }

    .depth-portal {
        top: 54%;
        width: min(30vw, 270px);
    }

    .stack-copy {
        top: 74px;
    }

    .morph-copy {
        top: 73px;
    }

    .morph-svg {
        top: 55%;
        height: 78vh;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .infinite-plane,
    .drag-puck,
    .carousel-track,
    .parallax-photo img,
    .card-index,
    .depth-layer,
    .zoom-frame,
    .stack-card,
    .morph-svg {
        will-change: auto;
    }

    .horizontal-lab,
    .depth-lab,
    .zoom-lab,
    .stack-lab,
    .morph-lab {
        height: auto;
    }

    .horizontal-sticky,
    .depth-sticky,
    .zoom-sticky,
    .stack-sticky,
    .morph-sticky {
        position: relative;
    }

    .horizontal-sticky {
        height: auto;
    }

    .horizontal-track {
        display: block;
        width: 100%;
        height: auto;
        transform: none;
    }

    .horizontal-panel {
        min-height: 100svh;
    }

    .depth-sticky,
    .morph-sticky {
        min-height: 100svh;
    }

    .zoom-sticky {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        height: auto;
        min-height: 100svh;
        align-content: center;
        gap: 10px;
        padding: 110px 18px 90px;
    }

    .zoom-frame {
        position: relative;
        top: auto;
        left: auto;
        width: 100%;
        opacity: 1;
        transform: none;
    }

    .zoom-copy {
        position: absolute;
    }

    .stack-sticky {
        height: auto;
        min-height: 100svh;
    }

    .stack-scene {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        align-content: center;
        gap: 9px;
        perspective: none;
    }

    .stack-card {
        position: relative;
        top: auto;
        left: auto;
        width: 100%;
        opacity: 1;
        transform: none;
    }

    .stack-card img {
        height: 140px;
    }
}

.horizontal-footer {
    color: #fff;
    background: #111217;
}

.horizontal-footer p,
.depth-footer p,
.zoom-footer p,
.stack-footer p,
.morph-footer p {
    margin: 0;
    font-size: 0.58rem;
    font-weight: 800;
    letter-spacing: 0.18em;
}

.horizontal-footer a,
.depth-footer a,
.zoom-footer a,
.stack-footer a,
.morph-footer a {
    display: grid;
    grid-template-columns: 1fr auto;
    min-width: min(310px, 52vw);
    padding: 15px 18px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 12px;
    transition: transform 180ms var(--ease), background 180ms ease;
}

.horizontal-footer a:hover,
.depth-footer a:hover,
.zoom-footer a:hover,
.stack-footer a:hover,
.morph-footer a:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.horizontal-footer a small,
.depth-footer a small,
.zoom-footer a small,
.stack-footer a small,
.morph-footer a small,
.horizontal-footer a span,
.depth-footer a span,
.zoom-footer a span,
.stack-footer a span,
.morph-footer a span {
    display: block;
}

/* 23 — Parallax depth scroll */

body[data-effect="parallax-depth-scroll"] {
    background: #071126;
}

.depth-lab {
    position: relative;
    height: 460vh;
    background: #071126;
}

.depth-sticky {
    position: sticky;
    top: 0;
    height: 100svh;
    overflow: hidden;
    isolation: isolate;
    background: #071126;
}

.depth-layer {
    position: absolute;
    will-change: transform;
}

.depth-back {
    inset: -18%;
    z-index: -4;
    transform: translate3d(0, var(--depth-y, 0px), 0);
}

.depth-back img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.46) saturate(0.95) hue-rotate(12deg);
    transform: scale(1.12);
}

.depth-back::after {
    position: absolute;
    inset: 0;
    content: "";
    background: linear-gradient(to bottom, rgba(6, 15, 37, 0.2), #061025 95%);
}

.depth-haze {
    inset: -20%;
    z-index: -3;
    filter: blur(70px);
    transform: translate3d(0, var(--depth-y, 0px), 0);
}

.depth-haze span {
    position: absolute;
    width: 36vw;
    aspect-ratio: 1;
    border-radius: 50%;
    background: rgba(114, 116, 255, 0.24);
}

.depth-haze span:nth-child(1) {
    top: 14%;
    left: 4%;
}

.depth-haze span:nth-child(2) {
    top: 26%;
    right: 0;
    background: rgba(49, 228, 255, 0.17);
}

.depth-haze span:nth-child(3) {
    bottom: 0;
    left: 38%;
    background: rgba(199, 83, 255, 0.15);
}

.depth-title {
    top: 50%;
    left: max(28px, calc((100vw - 1180px) / 2));
    z-index: 2;
    max-width: 600px;
    transform: translate3d(0, calc(-50% + var(--depth-y, 0px)), 0);
}

.depth-title h1 {
    font-size: clamp(4rem, 9vw, 9.5rem);
}

.depth-title h1 em {
    color: var(--cyan);
}

.depth-title > p:last-child {
    max-width: 450px;
    margin: 24px 0 0;
    color: rgba(255, 255, 255, 0.62);
    font-size: 0.88rem;
    line-height: 1.8;
}

.depth-portal {
    top: 50%;
    right: max(7vw, calc((100vw - 1280px) / 2));
    z-index: 3;
    width: clamp(260px, 31vw, 480px);
    aspect-ratio: 0.78;
    margin: 0;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: 46% 46% 9px 9px;
    background: rgba(6, 11, 28, 0.44);
    box-shadow: 0 40px 90px rgba(0, 0, 0, 0.44), inset 0 1px rgba(255, 255, 255, 0.1);
    transform: translate3d(0, calc(-44% + var(--depth-y, 0px)), 0);
}

.depth-portal img {
    width: 100%;
    height: calc(100% - 42px);
    border-radius: 48% 48% 5px 5px;
    object-fit: cover;
}

.depth-portal figcaption {
    display: flex;
    height: 42px;
    align-items: center;
    justify-content: space-between;
    color: rgba(255, 255, 255, 0.64);
    font-size: 0.54rem;
    letter-spacing: 0.14em;
}

.depth-foreground {
    inset: -12%;
    z-index: 5;
    pointer-events: none;
    transform: translate3d(0, var(--depth-y, 0px), 0);
}

.depth-foreground i {
    position: absolute;
    width: 1px;
    height: 52vh;
    background: linear-gradient(transparent, rgba(255, 255, 255, 0.36), transparent);
}

.depth-foreground i:nth-child(1) {
    top: 0;
    left: 18%;
    transform: rotate(17deg);
}

.depth-foreground i:nth-child(2) {
    right: 16%;
    bottom: 0;
    transform: rotate(-23deg);
}

.depth-foreground i:nth-child(3) {
    top: 18%;
    right: 4%;
    transform: rotate(8deg);
}

.depth-foreground b {
    position: absolute;
    right: 4%;
    bottom: 0;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.16);
    font-size: clamp(12rem, 32vw, 34rem);
    line-height: 0.7;
    letter-spacing: -0.1em;
}

.depth-scale {
    position: absolute;
    top: 50%;
    right: 25px;
    z-index: 15;
    display: grid;
    grid-template-rows: auto 180px auto;
    place-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.44);
    font-size: 0.47rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    transform: translateY(-50%);
}

.depth-scale i {
    position: relative;
    width: 1px;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
}

.depth-scale i::after {
    position: absolute;
    top: var(--depth-meter, 0%);
    left: 50%;
    width: 7px;
    aspect-ratio: 1;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 14px var(--cyan);
    content: "";
    transform: translate(-50%, -50%);
}

.depth-footer {
    color: #fff;
    background: #0c1730;
}

/* 24 — Layered zoom scroll */

body[data-effect="layered-zoom-scroll"] {
    background: #180e12;
}

.zoom-lab {
    position: relative;
    height: 520vh;
    background: #180e12;
}

.zoom-sticky {
    position: sticky;
    top: 0;
    height: 100svh;
    overflow: hidden;
    background: #180e12;
    isolation: isolate;
}

.zoom-sticky::after {
    position: absolute;
    inset: 0;
    z-index: 30;
    box-shadow: inset 0 0 110px rgba(0, 0, 0, 0.58);
    content: "";
    pointer-events: none;
}

.zoom-frame {
    position: absolute;
    top: 50%;
    left: 50%;
    width: min(67vw, 960px);
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.54);
    border-radius: 6px;
    background: #08090c;
    box-shadow: 0 35px 90px rgba(0, 0, 0, 0.55);
    opacity: var(--frame-opacity, 1);
    transform: translate(-50%, -50%) scale(var(--frame-scale, 1));
    will-change: transform, opacity;
}

.zoom-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.78) saturate(1.15);
}

.zoom-frame::after {
    position: absolute;
    inset: 0;
    border: clamp(8px, 1.3vw, 19px) solid rgba(9, 10, 14, 0.46);
    content: "";
}

.zoom-frame > span {
    position: absolute;
    top: 14px;
    left: 17px;
    z-index: 2;
    font-size: 0.53rem;
    font-weight: 800;
    letter-spacing: 0.18em;
}

.zoom-frame-1 {
    z-index: 4;
}

.zoom-frame-2 {
    z-index: 3;
    --frame-scale: 0.32;
}

.zoom-frame-3 {
    z-index: 2;
    --frame-scale: 0.11;
}

.zoom-frame-4 {
    z-index: 1;
    --frame-scale: 0.038;
}

.zoom-copy {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 20;
    width: 100%;
    padding: 0 6vw;
    text-align: center;
    pointer-events: none;
    opacity: var(--zoom-copy-opacity, 1);
    transform: translate(-50%, -50%) scale(var(--zoom-copy-scale, 1));
    will-change: transform, opacity;
}

.zoom-copy h1 {
    font-size: clamp(4.2rem, 12vw, 12rem);
    text-shadow: 0 8px 38px rgba(0, 0, 0, 0.48);
}

.zoom-copy h1 em {
    color: #ff8468;
}

.zoom-hud {
    position: absolute;
    right: max(28px, env(safe-area-inset-right));
    bottom: max(28px, env(safe-area-inset-bottom));
    z-index: 50;
    display: grid;
    grid-template-columns: auto auto;
    min-width: 200px;
    gap: 5px 18px;
    color: rgba(255, 255, 255, 0.7);
}

.zoom-hud b {
    font-family: ui-monospace, monospace;
    font-size: 1.4rem;
}

.zoom-hud span {
    align-self: end;
    justify-self: end;
    font-size: 0.52rem;
    font-weight: 800;
    letter-spacing: 0.14em;
}

.zoom-hud i {
    position: relative;
    grid-column: 1 / -1;
    height: 2px;
    background: rgba(255, 255, 255, 0.2);
}

.zoom-hud i::after {
    position: absolute;
    inset: 0 auto 0 0;
    width: var(--zoom-meter, 0%);
    background: #ff8468;
    content: "";
}

.zoom-footer {
    color: #fff;
    background: #e45e43;
}

/* 25 — Scroll 3D stack */

body[data-effect="scroll-3d-stack"] {
    color: #111217;
    background: #d9d2ff;
}

.stack-lab {
    position: relative;
    height: 540vh;
    background:
        linear-gradient(rgba(17, 18, 23, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(17, 18, 23, 0.08) 1px, transparent 1px),
        #d9d2ff;
    background-size: 64px 64px;
}

.stack-sticky {
    position: sticky;
    top: 0;
    display: grid;
    grid-template-columns: minmax(320px, 0.8fr) minmax(430px, 1.2fr);
    height: 100svh;
    overflow: hidden;
    padding: 116px max(28px, calc((100vw - 1280px) / 2)) 46px;
    gap: 40px;
}

.stack-copy {
    align-self: center;
    z-index: 12;
}

.stack-copy h1 {
    font-size: clamp(4.2rem, 8.5vw, 9rem);
}

.stack-copy h1 em {
    color: #704cff;
}

.stack-copy > p:nth-of-type(2) {
    max-width: 450px;
    margin: 24px 0 28px;
    color: rgba(10, 11, 14, 0.6);
    line-height: 1.8;
}

.stack-count {
    display: flex;
    align-items: baseline;
    gap: 9px;
}

.stack-count b {
    font-family: ui-monospace, monospace;
    font-size: 2.7rem;
}

.stack-count span {
    font-size: 0.58rem;
    font-weight: 800;
    letter-spacing: 0.14em;
}

.stack-scene {
    position: relative;
    align-self: stretch;
    perspective: 1200px;
    perspective-origin: 50% 45%;
    transform-style: preserve-3d;
}

.stack-card {
    position: absolute;
    top: 50%;
    left: 50%;
    width: clamp(230px, 28vw, 390px);
    aspect-ratio: 0.76;
    margin: 0;
    padding: 9px;
    border: 1px solid rgba(0, 0, 0, 0.34);
    border-radius: 12px;
    background: #f3f0e8;
    box-shadow: 0 28px 60px rgba(28, 21, 51, 0.22);
    opacity: var(--stack-opacity, 0);
    transform: translate3d(calc(-50% + var(--stack-x, 0px)), calc(-50% + var(--stack-y, 0px)), var(--stack-z, -900px)) rotateX(var(--stack-rx, 18deg)) rotateY(var(--stack-ry, -28deg)) rotateZ(var(--stack-rz, 0deg));
    transform-style: preserve-3d;
    will-change: transform, opacity;
}

.stack-card img {
    width: 100%;
    height: calc(100% - 39px);
    border-radius: 6px;
    object-fit: cover;
}

.stack-card span {
    display: flex;
    height: 39px;
    align-items: center;
    padding: 0 4px;
    font-size: 0.56rem;
    font-weight: 800;
    letter-spacing: 0.13em;
}

.stack-shadow {
    position: absolute;
    top: 69%;
    left: 50%;
    width: min(42vw, 560px);
    height: 80px;
    border-radius: 50%;
    background: rgba(40, 28, 84, 0.2);
    filter: blur(24px);
    transform: translateX(-50%) rotateX(70deg);
}

.stack-rail {
    position: absolute;
    right: 22px;
    top: 50%;
    z-index: 20;
    width: 160px;
    height: 20px;
    color: rgba(0, 0, 0, 0.48);
    font-size: 0.49rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    transform: rotate(90deg) translateY(-50%);
    transform-origin: center;
}

.stack-rail::before {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 1px;
    background: rgba(0, 0, 0, 0.22);
    content: "";
}

.stack-rail i {
    position: absolute;
    top: -1px;
    left: 0;
    width: var(--stack-meter, 0%);
    height: 3px;
    background: #704cff;
}

.stack-rail span {
    position: absolute;
    top: 7px;
    left: 0;
}

.stack-footer {
    color: #fff;
    background: #6f52ee;
}

/* 26 — Scroll SVG morph */

body[data-effect="scroll-svg-morph"] {
    background: #140a29;
}

.morph-lab {
    position: relative;
    height: 500vh;
    background: #140a29;
}

.morph-sticky {
    position: sticky;
    top: 0;
    height: 100svh;
    overflow: hidden;
    isolation: isolate;
    background:
        radial-gradient(circle at var(--morph-light-x, 68%) var(--morph-light-y, 42%), rgba(111, 90, 255, 0.23), transparent 36rem),
        #140a29;
}

.morph-sticky::before {
    position: absolute;
    inset: 0;
    z-index: -1;
    content: "";
    opacity: 0.28;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(circle at 67% 50%, #000, transparent 72%);
}

.morph-svg {
    position: absolute;
    top: 50%;
    right: max(2vw, calc((100vw - 1380px) / 2));
    width: min(69vw, 870px);
    height: min(88vh, 870px);
    overflow: visible;
    transform: translateY(-50%) rotate(var(--morph-rotation, 0deg));
    will-change: transform;
}

.morph-path,
.morph-echo {
    vector-effect: non-scaling-stroke;
}

.morph-path {
    fill: url(#morph-gradient);
    fill-opacity: 0.22;
    stroke: url(#morph-gradient);
    stroke-width: 9;
    stroke-linejoin: round;
    filter: url(#morph-glow);
}

.morph-echo {
    fill: none;
    stroke: rgba(255, 255, 255, 0.17);
    stroke-width: 2;
    stroke-dasharray: 5 13;
    transform: scale(1.12);
    transform-origin: center;
}

.morph-copy {
    position: absolute;
    top: 50%;
    left: max(28px, calc((100vw - 1220px) / 2));
    z-index: 4;
    max-width: 550px;
    transform: translateY(-50%);
}

.morph-copy h1 {
    font-size: clamp(4rem, 8.5vw, 8.8rem);
}

.morph-copy h1 em {
    color: var(--cyan);
}

.morph-copy > p:last-child {
    max-width: 440px;
    margin: 24px 0 0;
    color: rgba(255, 255, 255, 0.62);
    line-height: 1.8;
}

.morph-copy code {
    padding: 2px 5px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 4px;
    color: var(--cyan);
    background: rgba(255, 255, 255, 0.06);
}

.morph-state {
    position: absolute;
    right: max(32px, calc((100vw - 1240px) / 2));
    bottom: 80px;
    z-index: 4;
    display: grid;
    grid-template-columns: auto auto;
    min-width: 220px;
    gap: 4px 18px;
}

.morph-state small {
    grid-column: 1 / -1;
    color: rgba(255, 255, 255, 0.44);
    font-size: 0.5rem;
    font-weight: 800;
    letter-spacing: 0.14em;
}

.morph-state b {
    font-size: 1.1rem;
    letter-spacing: 0.06em;
}

.morph-state span {
    justify-self: end;
    color: var(--cyan);
    font-family: ui-monospace, monospace;
    font-size: 0.8rem;
}

.morph-timeline {
    position: absolute;
    right: max(28px, calc((100vw - 1180px) / 2));
    bottom: 36px;
    left: max(28px, calc((100vw - 1180px) / 2));
    z-index: 5;
    display: flex;
    justify-content: space-between;
    padding-top: 9px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.42);
    font-size: 0.47rem;
    font-weight: 800;
    letter-spacing: 0.14em;
}

.morph-timeline i {
    position: absolute;
    top: -2px;
    left: 0;
    width: var(--morph-meter, 0%);
    height: 3px;
    background: linear-gradient(90deg, var(--cyan), var(--violet), #ff6bb2);
}

.morph-footer {
    color: #fff;
    background: #281454;
}

.horizontal-footer a small,
.depth-footer a small,
.zoom-footer a small,
.stack-footer a small,
.morph-footer a small {
    margin-bottom: 5px;
    opacity: 0.55;
    font-size: 0.52rem;
    letter-spacing: 0.14em;
}

.horizontal-footer a span,
.depth-footer a span,
.zoom-footer a span,
.stack-footer a span,
.morph-footer a span {
    font-size: 0.82rem;
    font-weight: 800;
}

/* Responsive overrides for the scroll-space experiments live after their base rules. */
@media (max-width: 820px) {
    .depth-title {
        top: 27%;
        right: 20px;
        left: 20px;
        max-width: none;
    }

    .depth-title h1 {
        font-size: clamp(3.5rem, 17vw, 6rem);
    }

    .depth-title > p:last-child {
        display: none;
    }

    .depth-portal {
        top: 62%;
        right: 50%;
        width: min(72vw, 360px);
        transform: translate3d(50%, calc(-44% + var(--depth-y, 0px)), 0);
    }

    .depth-scale {
        right: 13px;
    }

    .zoom-frame {
        width: 84vw;
    }

    .zoom-copy h1 {
        font-size: clamp(3.7rem, 16vw, 6.8rem);
    }

    .stack-sticky {
        display: block;
        padding: 100px 18px 34px;
    }

    .stack-copy {
        position: absolute;
        top: 104px;
        left: 20px;
        z-index: 20;
        width: min(88vw, 550px);
        pointer-events: none;
    }

    .stack-copy h1 {
        font-size: clamp(3.6rem, 15vw, 6rem);
    }

    .stack-copy > p:nth-of-type(2) {
        display: none;
    }

    .stack-count {
        position: fixed;
        bottom: 24px;
        left: 20px;
    }

    .stack-scene {
        height: 100%;
    }

    .stack-card {
        width: min(58vw, 285px);
    }

    .stack-rail {
        right: -48px;
    }

    .morph-svg {
        top: 57%;
        right: 50%;
        width: min(105vw, 660px);
        height: min(66vh, 660px);
        transform: translate(50%, -50%) rotate(var(--morph-rotation, 0deg));
    }

    .morph-path {
        filter: none;
    }

    .morph-copy {
        top: 112px;
        right: 20px;
        left: 20px;
        max-width: none;
        transform: none;
    }

    .morph-copy h1 {
        font-size: clamp(3.2rem, 14vw, 5.5rem);
    }

    .morph-copy > p:last-child {
        display: none;
    }

    .morph-state {
        right: 22px;
        bottom: 78px;
    }

    .morph-timeline {
        right: 18px;
        bottom: 28px;
        left: 18px;
    }
}

@media (max-height: 620px) and (orientation: landscape) {
    .depth-title {
        top: 48%;
    }

    .depth-portal {
        top: 54%;
        width: min(30vw, 270px);
    }

    .stack-copy {
        top: 74px;
    }

    .morph-copy {
        top: 73px;
    }

    .morph-svg {
        top: 55%;
        height: 78vh;
    }
}

@media (prefers-reduced-motion: reduce) {
    .depth-lab,
    .zoom-lab,
    .stack-lab,
    .morph-lab {
        height: auto;
    }

    .depth-sticky,
    .zoom-sticky,
    .stack-sticky,
    .morph-sticky {
        position: relative;
    }

    .depth-sticky,
    .morph-sticky {
        min-height: 100svh;
    }

    .depth-back,
    .depth-haze,
    .depth-foreground {
        transform: none;
    }

    .depth-title {
        transform: translateY(-50%);
    }

    .depth-portal {
        transform: translateY(-44%);
    }

    .zoom-sticky {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        height: auto;
        min-height: 100svh;
        align-content: center;
        gap: 10px;
        padding: 110px 18px 90px;
    }

    .zoom-frame {
        position: relative;
        top: auto;
        left: auto;
        width: 100%;
        opacity: 1;
        transform: none;
    }

    .zoom-copy {
        position: absolute;
    }

    .stack-sticky {
        display: grid;
        height: auto;
        min-height: 100svh;
    }

    .stack-scene {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        align-content: center;
        gap: 9px;
        perspective: none;
    }

    .stack-card {
        position: relative;
        top: auto;
        left: auto;
        width: 100%;
        opacity: 1;
        transform: none;
    }

    .stack-card img {
        height: 140px;
    }
}