:root {
  --orange: #ff6a00;
  --orange-deep: #a84400;
  --ink: #1f2124;
  --paper: #f2f2f0;
  --tone: #e4e4e0;
  --earth: #8a3418;
  --earth-2: #6e2912;
  --earth-3: #511f10;
  --rock: #2c2623;
  --soft: #55585c;
  --m: clamp(16px, 2.2vw, 32px);
  --step-small: 0.875rem;
  --step-body: clamp(1.0625rem, 1rem + 0.25vw, 1.1875rem);
  --step-lead: clamp(1.25rem, 1.1rem + 0.7vw, 1.625rem);
  --step-head: clamp(2.5rem, 1.2rem + 5vw, 5.5rem);
  --step-mid: clamp(1.75rem, 1.2rem + 1.8vw, 2.75rem);
  --step-note: 1rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --t-press: 140ms;
  --t-hover: 180ms;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; background: var(--ink); }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 var(--step-body)/1.5 Epilogue, "Arial Black", Arial, sans-serif; overflow-x: clip; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, p, ul, dl, dd, figure { margin: 0; padding: 0; }
ul { list-style: none; }
::selection { background: var(--ink); color: var(--orange); }
h2 { font-weight: 900; font-size: var(--step-head); line-height: 0.95; letter-spacing: -0.04em; text-wrap: balance; }
p { text-wrap: pretty; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: var(--m); top: -80px; z-index: 50; background: var(--ink); color: var(--paper); padding: 12px 16px; }
.skip:focus { top: 8px; }

.demobar { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 0 var(--m); background: var(--ink); color: var(--paper); font-size: var(--step-small); line-height: 1.3; position: relative; z-index: 5; }
.demobar a { flex: none; font-weight: 500; min-height: 44px; display: inline-flex; align-items: center; }

.nav { position: absolute; left: 0; right: 0; z-index: 6; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px var(--m); pointer-events: none; }
.nav > *, .nav nav a { pointer-events: auto; }
.nav__mark { font-weight: 900; letter-spacing: -0.03em; font-size: 1.25rem; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; }
.nav nav { display: flex; gap: clamp(14px, 2vw, 32px); margin-left: auto; }
.nav nav a { text-decoration: none; font-weight: 500; font-size: 1rem; min-height: 44px; display: inline-flex; align-items: center; text-underline-offset: 0.25em; }
.lang { background: var(--ink); color: var(--paper); border: 0; min-width: 56px; min-height: 44px; font-weight: 500; cursor: pointer; transition: transform var(--t-press) var(--ease-out); }
.lang:active { transform: scale(0.96); }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 26px; background: var(--paper); color: var(--ink); font-weight: 500; text-decoration: none; border: 0; cursor: pointer; white-space: nowrap; transition: transform var(--t-press) var(--ease-out), background-color var(--t-hover) ease, color var(--t-hover) ease; }
.btn:active { transform: scale(0.97); }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn:focus-visible { outline-color: var(--ink); outline-offset: -6px; }
.btn--ink:focus-visible { outline-color: var(--paper); }
@media (hover: hover) and (pointer: fine) {
  .btn:hover { background: var(--orange); color: var(--ink); }
  .nav nav a:hover, .foot a:hover { text-decoration: underline; }
}

/* Historia: del edificio al suelo */
.story { position: relative; background: var(--orange); }
.stage { position: sticky; top: 0; height: 100svh; overflow: clip; background: var(--orange); }
.stage__fallback { position: absolute; inset: 70% 0 0; background: var(--earth); }
.stage.is-3d .stage__fallback { display: none; }
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity 400ms ease; }
.stage canvas.is-ready { opacity: 1; }
.hero { position: absolute; inset: 0 0 auto; z-index: 1; padding: 0 var(--m); top: 0; transform: translateY(70svh); }
.hero__name { position: absolute; left: var(--m); bottom: 0; font-weight: 900; font-size: calc((100vw - 2 * var(--m)) / 3.72); line-height: 1; letter-spacing: -0.045em; text-transform: uppercase; white-space: nowrap; color: var(--ink); }
.hero__word { display: block; }
.hero__below { position: absolute; left: var(--m); right: var(--m); top: 0; padding-top: 28px; display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; color: var(--paper); }
.hero__lead { max-width: 30ch; font-weight: 500; font-size: var(--step-lead); line-height: 1.3; }
.stage__tag, .tag { position: absolute; right: 84px; bottom: 56px; padding: 4px 8px; background: var(--ink); font-size: var(--step-small); color: var(--paper); }
.steps { position: relative; pointer-events: none; }
.step { min-height: 100svh; display: flex; align-items: center; padding: 0 var(--m); }
.step__card { pointer-events: auto; width: min(100%, 27rem); background: var(--ink); color: var(--paper); padding: clamp(20px, 2.4vw, 36px); }
.step__card h2 { font-size: var(--step-mid); margin-bottom: 14px; }

.manifest { background: var(--rock); color: var(--paper); padding: clamp(96px, 16vh, 200px) var(--m); }
.statement { max-width: 25em; font-size: clamp(1.375rem, 1rem + 1.8vw, 2.25rem); line-height: 1.3; font-weight: 500; letter-spacing: -0.02em; --fill: var(--paper); color: var(--fill); }

.band { padding: clamp(96px, 15vh, 200px) 0 0; }
.band__head { font-size: var(--step-mid); padding: 0 var(--m) 56px calc(var(--m) + 16.6%); }
.band__row { display: flex; height: 68svh; min-height: 420px; }
.band__p { position: relative; flex: 2 1 0; min-width: 0; overflow: clip; transition: flex-grow 500ms var(--ease-out); }
.band__p--1 { flex-grow: 5; }
.band__p:nth-child(3) { flex-grow: 3; }
.band__p img { width: 100%; height: 100%; object-fit: cover; }
.band__p figcaption { position: absolute; left: 0; top: 0; padding: 20px 24px; background: var(--ink); color: var(--paper); font-size: var(--step-lead); font-weight: 500; line-height: 1.1; }
@media (hover: hover) and (pointer: fine) { .band__p:hover { flex-grow: 6; } }
.band__cap { padding: 16px var(--m) 0; font-size: 1rem; max-width: 70ch; }

.services { padding: clamp(120px, 20vh, 220px) var(--m); }
.services > h2 { font-size: var(--step-mid); margin-bottom: 72px; }
.services__grid { display: grid; grid-template-columns: repeat(4, 1fr) 1.15fr; gap: 32px clamp(16px, 2.4vw, 40px); align-items: start; }
.services__col h3 { font-size: var(--step-body); font-weight: 900; line-height: 1.2; letter-spacing: -0.01em; margin-bottom: 18px; min-height: 2.4em; }
.services__col li { padding: 7px 0; line-height: 1.3; }
.services__col li span { color: var(--ink); }
.services__col li p { font-size: 1rem; margin-top: 6px; }
.services__panel { display: none; }
@media (min-width: 900px) {
  .js .services__col li p { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .js .services__col li { cursor: default; color: var(--soft); transition: color var(--t-hover) ease; }
  .js .services__col li span { color: inherit; text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 0.2em; transition: text-decoration-color var(--t-hover) ease; }
  .js .services__col li.is-on { color: var(--ink); font-weight: 500; }
  .js .services__col li.is-on span { text-decoration-color: var(--orange); text-decoration-thickness: 3px; }
  .js .services__panel { display: block; background: var(--orange); padding: 24px; font-size: 1.0625rem; line-height: 1.35; min-height: 15rem; }
  .services__grid { grid-template-rows: auto; }
}

.slab { background: var(--ink); color: var(--paper); display: grid; grid-template-columns: 5fr 7fr; gap: 40px var(--m); padding: clamp(96px, 15vh, 180px) var(--m); align-items: start; }
.slab :focus-visible, .manifest :focus-visible, .foot :focus-visible { outline-color: var(--paper); }
.slab__text h2 { font-size: clamp(2.5rem, 1.6rem + 3.2vw, 4rem); }
.slab__text { display: grid; gap: 24px; justify-items: start; }
.slab__view { position: relative; height: clamp(360px, 62svh, 640px); }
.slab__view canvas { width: 100%; height: 100%; display: block; touch-action: pan-y; cursor: grab; }
.note { color: var(--paper); font-size: 1rem; max-width: 36ch; }
.slab__photo { grid-column: 1 / -1; display: grid; grid-template-columns: 5fr 7fr; gap: var(--m); align-items: end; }
.slab__photo img { grid-column: 2; grid-row: 1; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.slab__photo figcaption { grid-column: 1; grid-row: 1; font-size: 1rem; }
.switch { display: inline-flex; background: var(--paper); padding: 4px; gap: 4px; }
.switch button { min-height: 44px; padding: 0 18px; border: 0; background: transparent; color: var(--ink); cursor: pointer; font-weight: 500; transition: background-color var(--t-hover) ease, transform var(--t-press) var(--ease-out); }
.switch button:active { transform: scale(0.97); }
.switch button.is-on { background: var(--orange); }

.works { display: grid; grid-template-columns: 7fr 5fr; grid-template-rows: auto 1fr; background: var(--paper); }
.works__head { padding: clamp(96px, 15vh, 180px) var(--m) 24px; }
.works__list { padding: 0 var(--m) clamp(96px, 15vh, 180px); }
.works__view { grid-column: 2; grid-row: 1 / 3; }
.works__intro { max-width: 46ch; margin-top: 24px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 40px; }
.filters button { min-height: 44px; padding: 0 16px; background: var(--tone); border: 0; cursor: pointer; font-weight: 500; transition: background-color var(--t-hover) ease, transform var(--t-press) var(--ease-out); }
.filters button:active { transform: scale(0.97); }
.filters button.is-on { background: var(--ink); color: var(--paper); }
.works__rows { min-height: 70svh; }
.works__rows a { display: block; padding: 11px 0; text-decoration: none; }
.works__rows b { display: block; font-weight: 900; font-size: var(--step-mid); line-height: 1.02; letter-spacing: -0.03em; transition: color var(--t-hover) ease; }
.works__rows span { display: block; margin-top: 4px; font-size: 1rem; }
@media (hover: hover) and (pointer: fine) { .works__rows a:hover b { color: var(--orange-deep); } }
.works__view { position: sticky; top: 0; height: 100svh; background: var(--orange); overflow: clip; }
.works__view canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: pan-y; cursor: grab; }
.works__view canvas:active { cursor: grabbing; }
.works__view .tag { bottom: 16px; left: var(--m); right: auto; }
.slab__view .tag { bottom: 8px; right: 0; }
.switch--view { position: absolute; top: 16px; right: var(--m); }

.field { position: relative; background: var(--ink); color: var(--paper); overflow: clip; }
.field img { width: 100%; height: 100svh; min-height: 520px; object-fit: cover; filter: saturate(0.6); }
.field__text { position: absolute; left: 0; right: 0; bottom: 0; z-index: 1; background: var(--ink); padding: clamp(20px, 3vw, 40px) var(--m); display: grid; grid-template-columns: 7fr 5fr; gap: 12px var(--m); align-items: end; }
.field__text h2 { font-size: var(--step-head); }

.damage { display: grid; grid-template-columns: 7fr 5fr; gap: var(--m); padding: clamp(120px, 20vh, 220px) var(--m); align-items: center; }
.damage figcaption { margin-top: 10px; font-size: 1rem; }
.damage img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; object-position: 50% 0; }
.damage h2 { font-size: var(--step-mid); margin-bottom: 20px; }
.damage p { margin-bottom: 24px; }

.partners { background: var(--orange); padding: clamp(96px, 15vh, 180px) var(--m); overflow: clip; }
.partners h2 { font-size: var(--step-mid); margin-bottom: 40px; }
.partners__big { font-weight: 900; font-size: 10.4vw; line-height: 0.95; letter-spacing: -0.05em; white-space: nowrap; }
.partners__big--r { text-align: right; }
.partners__foot { margin-top: 56px; display: grid; grid-template-columns: 5fr 7fr; gap: 24px var(--m); align-items: end; }
.partners__foot img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.partners__text { max-width: 44ch; }

.verb { position: relative; height: 100svh; overflow: clip; background: var(--ink); color: var(--paper); }
.verb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.verb::after { content: ""; position: absolute; inset: 0; background: rgba(31, 33, 36, 0.42); }
.verb h2 { position: sticky; top: 50%; z-index: 1; transform: translateY(-50%); text-align: center; font-size: clamp(3.4rem, 15.5vw, 15rem); line-height: 1; letter-spacing: -0.05em; color: var(--paper); }
.verb p { position: absolute; left: 0; right: 0; bottom: 0; z-index: 1; padding: 18px calc(var(--m) + 72px); background: var(--ink); font-size: var(--step-lead); line-height: 1.3; text-align: center; text-wrap: balance; }

.about { display: grid; grid-template-columns: 1fr 34%; gap: 32px var(--m); padding: clamp(120px, 20vh, 220px) var(--m); }
.about__facts { display: grid; gap: 22px; align-content: start; }
.about__facts dt { font-size: var(--step-note); color: var(--soft); }
.about__facts dd { font-weight: 500; line-height: 1.3; max-width: 24ch; }
.about__text h2 { margin-bottom: 28px; }
.about__text p { font-size: var(--step-lead); line-height: 1.35; max-width: 38em; }

.faq { background: var(--tone); padding: clamp(96px, 15vh, 180px) var(--m); display: grid; gap: clamp(56px, 8vh, 84px); }
.faq__row { display: grid; grid-template-columns: 6fr 1fr 5fr; column-gap: var(--m); align-items: baseline; }
.faq__row > :last-child { grid-column: 3; }
.faq__row > h2, .faq__row > h3 { font-size: var(--step-mid); font-weight: 500; line-height: 1.1; letter-spacing: -0.02em; text-wrap: balance; }
.faq__title { color: var(--soft); }

.quote { background: var(--orange); display: grid; grid-template-columns: 5fr 7fr; gap: 48px var(--m); padding: clamp(96px, 15vh, 180px) var(--m); }
.quote__head p { margin-top: 20px; max-width: 34ch; }
.quote__form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px var(--m); align-items: end; }
.quote__form label { display: grid; gap: 6px; font-weight: 500; }
.quote__form input, .quote__form select { width: 100%; min-height: 54px; padding: 0 14px; background: var(--paper); border: 0; border-radius: 0; font-weight: 400; }
.quote__form input:focus-visible, .quote__form select:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
.quote__form .btn { grid-column: 1 / -1; justify-self: start; }

.contact { display: grid; grid-template-columns: 5fr 7fr; gap: 48px var(--m); padding: clamp(96px, 15vh, 180px) var(--m); background: var(--paper); }
.contact__head { display: grid; gap: 20px; justify-items: start; align-content: start; }
.contact__head h2 { font-size: clamp(2.5rem, 1.6rem + 3.2vw, 4rem); }
.contact__head p { max-width: 32ch; }
.contact__list { display: grid; gap: clamp(28px, 4vh, 44px); }
.contact__list > div { display: grid; grid-template-columns: 11rem 1fr; gap: 4px 24px; align-items: baseline; }
.contact__list dt { font-size: var(--step-note); color: var(--soft); }
.contact__list dd a { display: inline-flex; align-items: center; min-height: 44px; font-size: clamp(1.375rem, 1.1rem + 1.1vw, 2.25rem); font-weight: 500; line-height: 1.15; letter-spacing: -0.02em; text-decoration: underline; text-decoration-color: transparent; text-decoration-thickness: 3px; text-underline-offset: 0.18em; overflow-wrap: anywhere; transition: text-decoration-color var(--t-hover) ease; }
.contact__social { display: flex; flex-wrap: wrap; gap: 4px 28px; }
@media (hover: hover) and (pointer: fine) { .contact__list dd a:hover { text-decoration-color: var(--orange); } }

.foot { background: var(--ink); color: var(--paper); padding: 40px var(--m) 20px; }
.foot__cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px var(--m); font-size: 1rem; }
.foot__cols a { display: flex; align-items: center; padding: 5px 0; text-decoration: none; min-height: 44px; line-height: 1.3; }
.foot__cols p { padding: 5px 0; }
.foot__mark span { display: inline-block; }
.foot__mark { margin-top: clamp(80px, 18vh, 200px); font-weight: 900; font-size: calc((100vw - 2 * var(--m)) / 3.72); line-height: 0.8; letter-spacing: -0.045em; text-transform: uppercase; white-space: nowrap; color: var(--orange); }
.foot__credits { margin-top: 28px; font-size: var(--step-small); }
.foot__credits summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-size: 1rem; }
.foot__credits p { margin-top: 10px; max-width: 70ch; }
.credits a { word-break: break-word; }

.wa { position: fixed; right: 16px; bottom: 16px; z-index: 20; width: 56px; height: 56px; display: grid; place-items: center; background: var(--ink); color: var(--paper); transition: transform var(--t-press) var(--ease-out), opacity var(--t-hover) ease; }
.wa:active { transform: scale(0.94); }
.wa:focus-visible { outline-color: var(--paper); outline-offset: -7px; }

.msg { max-width: min(92vw, 30rem); border: 0; padding: 28px; background: var(--paper); color: var(--ink); }
.msg::backdrop { background: rgba(31, 33, 36, 0.7); }
.msg h2 { font-size: var(--step-mid); margin-bottom: 16px; }
.msg__bubble { background: var(--tone); padding: 14px 16px; white-space: pre-line; margin-bottom: 14px; font-size: 1rem; }
.msg__act { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; align-items: center; }
.linkbtn { background: none; border: 0; min-height: 44px; padding: 0 12px; cursor: pointer; text-decoration: underline; }

/* Sin WebGL: una foto real en lugar del modelo */
.no3d .stage__fallback { inset: 0; background: url(../img/estructura-acero.webp) center/cover; }
.no3d .stage canvas, .no3d .works__view canvas, .no3d .slab__view canvas, .no3d .stage__tag, .no3d .tag, .no3d .switch--view, .no3d .slab .switch { display: none; }
.no3d .hero__name, .no3d .hero__below { background: var(--ink); color: var(--paper); }
.no3d .slab__view { display: none; }
.no3d .works { display: block; }
.no3d .works__view { display: none; }
html:not(.js) .works__rows li[hidden] { display: block; }

@media (max-width: 899px) {
  .nav nav a:not([href="#presupuesto"]) { display: none; }
  .hero__below { flex-direction: column; padding-top: 150px; gap: 14px; }
  .hero__lead { font-size: var(--step-body); max-width: 26ch; }
  .btn { min-height: 50px; }
  .stage__tag { bottom: 44px; left: var(--m); right: auto; }
  .step { align-items: flex-end; padding-bottom: 80px; }
  .step__card { padding: 18px; }
  .step__card p { font-size: 1rem; line-height: 1.35; }
  .band__head { padding-left: var(--m); padding-bottom: 28px; }
  .band__row { flex-wrap: wrap; height: 84svh; }
  .band__p { height: 50%; }
  .band__p:nth-child(1) { flex: 0 0 64%; }
  .band__p:nth-child(2) { flex: 0 0 36%; }
  .band__p:nth-child(3) { flex: 0 0 36%; }
  .band__p:nth-child(4) { flex: 0 0 64%; }
  .services__grid { grid-template-columns: 1fr; gap: 40px; }
  .services__col h3 { min-height: 0; font-size: var(--step-lead); }
  .services__col li { padding: 10px 0; }
  .services__col li span { font-weight: 500; }
  .slab { grid-template-columns: 1fr; }
  .slab__photo { grid-template-columns: 1fr; }
  .slab__photo img, .slab__photo figcaption { grid-column: 1; grid-row: auto; }
  .works { display: flex; flex-direction: column; }
  .works__head { padding-bottom: 24px; }
  .works__view { z-index: 3; height: 52svh; flex: none; order: 1; }
  .works__view .tag { bottom: 8px; left: var(--m); }
  .tag__more { display: none; }
  .switch--view { top: 8px; right: var(--m); }
  .works__list { order: 2; padding-top: 0; }
  .filters { position: sticky; top: 52svh; z-index: 2; flex-wrap: nowrap; overflow-x: auto; margin: 0 calc(var(--m) * -1) 12px; padding: 8px var(--m); background: var(--paper); scrollbar-width: none; }
  .filters::-webkit-scrollbar { display: none; }
  .filters button { flex: none; }
  .field img { height: 90svh; }
  .damage { grid-template-columns: 1fr; gap: 28px; }
  .field__text { grid-template-columns: 1fr; }
  .partners__foot { grid-template-columns: 1fr; }
  .about { grid-template-columns: 1fr; }
  .faq__row { grid-template-columns: 1fr; row-gap: 12px; }
  .faq__row > :last-child { grid-column: 1; }
  .quote { grid-template-columns: 1fr; }
  .quote__form { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .contact__list > div { grid-template-columns: 1fr; }
  .contact__list dd a { font-size: clamp(1.25rem, 5.6vw, 1.75rem); }
  .foot__cols { grid-template-columns: 1fr 1fr; }
  .verb h2 { font-size: 17vw; }
  .verb p { font-size: var(--step-body); }
  .wa { bottom: 12px; right: 12px; }
}

/* Movimiento */
@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal] { opacity: 0.4; transform: translateY(24px); transition: opacity 700ms var(--ease-out), transform 900ms var(--ease-expo); }
  .js [data-reveal].is-in { opacity: 1; transform: none; }
  .js .services__col:nth-child(2) { transition-delay: 70ms; }
  .js .services__col:nth-child(3) { transition-delay: 140ms; }
  .js .services__col:nth-child(4) { transition-delay: 210ms; }
  .js .hero__word { animation: rise 800ms var(--ease-expo) both; }
  .js .hero__below { animation: fade 500ms var(--ease-out) 420ms both; }
  @keyframes rise { from { transform: translateY(16%); opacity: 0; } }
  @keyframes fade { from { opacity: 0; transform: translateY(12px); } }
  @supports (animation-timeline: view()) {
    .is-filling > span { display: inline-block; color: color-mix(in oklab, var(--fill) 45%, transparent); animation: ink-fill linear both; animation-timeline: view(); animation-range: cover 20% cover 45%; }
    @keyframes ink-fill { to { color: var(--fill); } }
    .verb img, .field img { animation: drift linear both; animation-timeline: view(); animation-range: cover; }
    @keyframes drift { from { transform: scale(1.1) translateY(-3%); } to { transform: scale(1.1) translateY(3%); } }
    .partners__big span { display: inline-block; animation: push linear both; animation-timeline: view(); animation-range: entry 0% exit 100%; }
    @keyframes push { from { transform: translateX(0); } to { transform: translateX(3%); } }
    .partners__big--r span { animation-name: push-r; }
    @keyframes push-r { from { transform: translateX(-3%); } to { transform: translateX(0); } }
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .stage canvas { transition: none; }
}