/* Kubinu landing page sections. Every colour comes from tokens in site.css. */

.section { padding-block: clamp(80px, 11vw, 150px); position: relative; }
.section-head { max-width: 820px; margin-bottom: clamp(36px, 5vw, 64px); }

/* ---------- hero ---------- */
.hero { position: relative; min-height: min(92vh, 900px); display: flex; align-items: center; overflow: hidden; padding-block: 120px 100px; isolation: isolate; }
.hero-stage { position: absolute; inset: 0; z-index: -1; }
.hero-canvas { width: 100%; height: 100%; opacity: 0; transition: opacity 1.2s ease; }
.hero.is-3d .hero-canvas { opacity: 1; }
.hero-fallback { position: absolute; right: 6%; top: 50%; width: min(42vw, 480px); transform: translateY(-50%); opacity: .9; }
.hero.is-3d .hero-fallback { display: none; }
.hero-stage::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, var(--bg) 0%, var(--bg) 40%, color-mix(in srgb, var(--bg) 78%, transparent) 50%, transparent 64%),
              linear-gradient(0deg, var(--bg) 0%, transparent 22%); }
.hero-inner { width: 100%; }
.hero-steps-wrap { position: absolute; z-index: 2; bottom: 110px; right: max(var(--gutter), calc((100vw - var(--wrap)) / 2 + var(--gutter))); }
.swipe-hint { display: none; }
.hero-copy { max-width: 700px; }
.hero-title { font: 800 clamp(3.2rem, 9vw, 7.6rem)/.92 var(--font-display); letter-spacing: -.04em; margin-bottom: 26px; }
.hero-title .w { display: inline-block; }
.js-motion .hero-title .w { animation: rise .9s cubic-bezier(.2,.7,.2,1) both; animation-delay: calc(var(--i) * 90ms + 150ms); }
.hero-title .w:last-child { color: var(--accent); }
.hero-sub { font-size: clamp(1.08rem, 1.6vw, 1.3rem); color: var(--muted); max-width: 56ch; margin-bottom: 34px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-steps { list-style: none; margin: 0; padding: 18px; display: grid; gap: 4px; min-width: 280px; background: color-mix(in srgb, var(--surface) 84%, transparent); border: 1px solid var(--border); border-radius: calc(var(--r) * 2); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.hero-steps li { display: grid; grid-template-columns: 30px 1fr; gap: 10px; padding: 10px 8px; border-radius: var(--r); opacity: .68; transition: opacity .5s, background .5s; }
.hero-steps li.is-on { opacity: 1; background: color-mix(in srgb, var(--accent) 9%, transparent); }
.hero-steps li.is-on span { color: var(--accent-text); }
.hero-steps span { font-size: .8rem; padding-top: 3px; }
.hero-steps b { display: block; font: 700 1.05rem var(--font-display); }
.hero-steps small { display: block; color: var(--muted); font-size: .82rem; line-height: 1.35; }
.hero-steps .hs-bar { display: block; padding: 6px 8px 0; opacity: 1; background: none; }
.hero-steps .hs-bar i { display: block; height: 2px; background: var(--accent); transform-origin: 0 50%; transform: scaleX(var(--hp, 0)); border-radius: 2px; }
.decision-card { position: absolute; left: 0; top: 0; z-index: 3; width: 300px; display: grid; gap: 5px; padding: 14px 16px; background: var(--fg); color: var(--bg); border-radius: 10px; box-shadow: 0 24px 50px -20px rgb(0 0 0 / .55); opacity: 0; transform: translate(-50%, -100%) translateY(10px) scale(.96); transition: opacity .5s, transform .5s cubic-bezier(.2,.8,.2,1); pointer-events: none; }
.decision-card.is-on { opacity: 1; transform: translate(-50%, -100%) translateY(-18px); }
.decision-card::after { content: ""; position: absolute; left: 50%; bottom: -7px; width: 14px; height: 14px; background: var(--fg); transform: translateX(-50%) rotate(45deg); border-radius: 2px; }
.dc-label { font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.decision-card b { font: 700 1.12rem/1.25 var(--font-display); }
.dc-row { font-size: .74rem; opacity: .85; display: flex; align-items: center; gap: 8px; }
.dc-row i { width: 9px; height: 9px; border-radius: 2px; background: var(--accent); transform: rotate(20deg); }
.hero.is-3d .hero-fallback ~ .decision-card { display: grid; }
.scroll-cue { position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%); display: grid; justify-items: center; gap: 8px; font-size: .7rem; letter-spacing: .2em; text-transform: uppercase; text-decoration: none; color: var(--muted); }
.scroll-cue span { width: 1px; height: 38px; background: linear-gradient(var(--accent), transparent); animation: drip 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes rise { from { opacity: 0; transform: translateY(.45em) rotate(3deg); } to { opacity: 1; transform: none; } }
@keyframes drip { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* ---------- strip ---------- */
.strip { border-block: 1px solid var(--border); background: var(--surface); overflow: hidden; padding-block: 16px; }
.strip-track { display: flex; align-items: center; gap: 22px; width: max-content; font-size: .85rem; letter-spacing: .1em; text-transform: uppercase; animation: marquee 48s linear infinite; }
.strip:hover .strip-track { animation-play-state: paused; }
.tile-dot { width: 9px; height: 9px; border-radius: 2px; background: var(--fg); flex: none; }
.strip-track .tile-dot:nth-of-type(6n) { background: var(--accent); transform: rotate(20deg); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- approach ---------- */
.approach-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(40px, 6vw, 96px); align-items: center; }
.approach-viz { background: var(--surface); border: 1px solid var(--border); border-radius: calc(var(--r) * 2); padding: clamp(20px, 3vw, 36px); box-shadow: var(--shadow); }
.ag { display: grid; grid-template-columns: repeat(8, 1fr); gap: 7px; position: relative; }
.ag i { aspect-ratio: 1; border-radius: 4px; background: var(--tile-off); transition: opacity .6s, transform .6s cubic-bezier(.2,.7,.2,1); transition-delay: calc(var(--k) * 18ms); }
.ag i:nth-child(3n+1) { background: color-mix(in srgb, var(--dry) 70%, var(--tile-off)); }
.ag i:nth-child(7n+2), .ag i:nth-child(11n+5) { background: var(--tile-on); }
.ag i.slot { background: transparent; outline: 1.5px dashed var(--fg); outline-offset: -2px; position: relative; }
.ag-lift { position: absolute; inset: 0; border-radius: 4px; background: var(--accent); transform: translate(26%, 38%) rotate(20deg); box-shadow: 0 14px 30px -8px var(--accent); transition: transform 1.1s cubic-bezier(.3,1.6,.4,1) .9s; }
.js-motion .approach-viz:not(.is-in) .ag i { opacity: 0; transform: scale(.6); }
.js-motion .approach-viz:not(.is-in) .ag-lift { transform: none; }
.ag-note { display: flex; align-items: center; gap: 10px; margin-top: 18px; color: var(--muted); }
.ag-dot { width: 10px; height: 10px; border-radius: 2px; background: var(--accent); transform: rotate(20deg); }
.principles { list-style: none; padding: 0; margin: 30px 0 0; display: grid; gap: 18px; }
.principles li { display: grid; grid-template-columns: 22px 1fr; gap: 16px; padding-top: 18px; border-top: 1px solid var(--border); }
.pr-tile { width: 14px; height: 14px; border-radius: 3px; background: var(--fg); margin-top: 6px; }
.principles li:last-child .pr-tile { background: var(--accent); transform: rotate(20deg); }
.principles b { font: 700 1.15rem var(--font-display); }
.principles p { margin: 4px 0 0; color: var(--muted); font-size: .97rem; }

/* ---------- services ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; perspective: 1200px; }
.service-card { position: relative; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border); border-radius: calc(var(--r) * 2); padding: 28px; transform-style: preserve-3d; transition: transform .25s ease-out, border-color .25s, box-shadow .25s; overflow: hidden; min-width: 0; }
.service-card:hover { border-color: var(--fg); box-shadow: var(--shadow); }
.service-card > * { transform: translateZ(18px); }
.service-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 26px; }
.tile-icon { display: grid; grid-template-columns: repeat(3, 14px); gap: 4px; }
.tile-icon i { width: 14px; height: 14px; border-radius: 3px; background: var(--tile-off); transition: transform .35s cubic-bezier(.3,1.6,.4,1), background .3s; }
.tile-icon i.on { background: var(--tile-on); }
.tile-icon i.lift { background: var(--accent); }
.service-card:hover .tile-icon i.lift { transform: translate(4px, 6px) rotate(20deg); }
.service-card p { color: var(--muted); font-size: .98rem; }
.ticks { list-style: none; padding: 0; margin: 4px 0 22px; display: grid; gap: 8px; font-size: .93rem; }
.ticks li { display: grid; grid-template-columns: 14px 1fr; gap: 10px; }
.ticks li::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--accent); margin-top: .5em; }
.question { margin-top: auto; padding-top: 16px; border-top: 1px dashed var(--border); font-style: italic; color: var(--fg) !important; }
.question .label { font-style: normal; margin-bottom: 6px; }
.glare { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at var(--gx, 50%) var(--gy, 50%), rgb(255 255 255 / .16), transparent 45%); opacity: 0; transition: opacity .3s; transform: none !important; }
.service-card:hover .glare { opacity: 1; }

/* ---------- products ---------- */
.products .section-head .lead { max-width: 62ch; margin-top: 14px; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.product-card { position: relative; display: flex; flex-direction: column; gap: 10px; min-width: 0; padding: 26px; background: var(--surface); border: 1px solid var(--border); border-radius: calc(var(--r) * 2); transition: border-color .25s, box-shadow .25s; }
.product-card:hover { border-color: var(--fg); box-shadow: var(--shadow); }
.product-card .service-top { margin-bottom: 14px; }
.product-card:hover .tile-icon i.lift { transform: translate(4px, 6px) rotate(20deg); }
.product-card .h3 { margin: 0; }
.product-card p { margin: 0; color: var(--muted); font-size: .97rem; }
.product-for { font-size: .9rem !important; }
.product-for .label { margin-bottom: 4px; }
.product-foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-top: auto; padding-top: 16px; border-top: 1px dashed var(--border); }
.product-foot .service-more { margin-top: 0; }
.price-chip { padding: 5px 10px; border-radius: 999px; background: var(--surface-2); color: var(--muted); }
.price-chip.is-priced { background: var(--fg); color: var(--bg); }

/* ---------- layer stack ---------- */
.layers { position: relative; height: calc(var(--n, 5) * 80vh + 100vh); background: var(--band-bg); color: var(--band-fg); }
.layers::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(rgb(238 237 231 / .045) 1px, transparent 1px), linear-gradient(90deg, rgb(238 237 231 / .045) 1px, transparent 1px); background-size: 48px 48px; }
.layers-sticky { position: sticky; top: 0; height: 100vh; display: flex; align-items: center; overflow: hidden; }
.layers-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 40px; align-items: center; width: 100%; position: relative; }
.layers .eyebrow { color: var(--accent); }
.layers .h2 { font-size: clamp(1.9rem, 3.4vw, 3rem); margin-bottom: 22px; }
.layer-meter { display: flex; align-items: center; gap: 14px; font-size: .9rem; color: var(--band-muted); margin-bottom: 18px; }
.layer-meter span { font-size: 1.6rem; color: var(--band-fg); font-variant-numeric: tabular-nums; }
.layer-meter i { flex: 1; height: 2px; background: var(--band-border); border-radius: 2px; overflow: hidden; }
.layer-meter b { display: block; height: 100%; width: 100%; background: var(--accent); transform-origin: 0 50%; transform: scaleX(var(--lp, .2)); transition: transform .3s; }
.layer-list { list-style: none; margin: 0; padding: 0; display: grid; }
.layer-list li { display: grid; grid-template-columns: 38px 1fr; gap: 10px; padding: 12px 0 12px 14px; border-left: 2px solid var(--band-border); opacity: .4; transition: opacity .4s, border-color .4s, background .4s; }
.layer-list li.is-done { opacity: .72; }
.layer-list li.is-on { opacity: 1; border-left-color: var(--accent); background: linear-gradient(90deg, rgb(226 85 59 / .08), transparent 70%); }
.layer-list li.is-on span { color: var(--accent); }
.layer-list b { font: 700 1.08rem var(--font-display); }
.layer-list p { margin: 2px 0 0; color: var(--band-muted); font-size: .9rem; max-height: 0; overflow: hidden; transition: max-height .45s; }
.layer-list li.is-on p { max-height: 4.5em; }
.stack-wrap { position: relative; }
.stack-scene { height: min(80vh, 760px); perspective: 2400px; display: grid; place-items: center; }
.stack { --gap: 70px; --rz: -45deg; --lz: 26px; position: relative; width: min(33vw, 450px); aspect-ratio: 1; transform-style: preserve-3d; transform: translateY(14%) rotateX(60deg) rotateZ(var(--rz)); transition: transform .3s; }
.plane { position: absolute; inset: 0; border-radius: 14px; transform-style: preserve-3d; transform: translateZ(calc(var(--i) * var(--gap))); background: rgb(238 237 231 / .045); border: 1px solid rgb(238 237 231 / .22); box-shadow: 0 50px 90px -40px rgb(0 0 0 / .8); transition: transform .8s cubic-bezier(.2,.8,.2,1), opacity .6s, border-color .4s, box-shadow .4s; }
.plane.is-pending { opacity: 0; transform: translateZ(calc(var(--i) * var(--gap) + 220px)); }
.plane.is-active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 0 60px -10px rgb(226 85 59 / .45), 0 50px 90px -40px rgb(0 0 0 / .8); }
.plane-imagery { background: #3a4630; border-color: rgb(238 237 231 / .1); }
.layer-canvas { width: 100%; height: 100%; border-radius: inherit; }
.insight-grid { position: absolute; inset: 5%; display: grid; grid-template-columns: repeat(6, 1fr); grid-template-rows: repeat(6, 1fr); gap: 5px; transform-style: preserve-3d; }
.insight-grid i { border-radius: 5px; background: rgb(238 237 231 / .1); }
.insight-grid i.slot { background: transparent; outline: 1.5px dashed #EEEDE7; outline-offset: -2px; position: relative; transform-style: preserve-3d; }
.insight-lift { position: absolute; inset: 0; border-radius: 5px; background: var(--accent); transform: translateZ(var(--lz)) rotateZ(20deg); box-shadow: 0 0 50px rgb(226 85 59 / .75); transition: transform 1s cubic-bezier(.3,1.5,.4,1); position: relative; }
.insight-lift span { position: absolute; left: 115%; top: -20%; white-space: nowrap; font-size: .72rem; color: #EEEDE7; background: rgb(30 30 36 / .85); padding: 2px 6px; border-radius: 3px; }
.layer-card { position: absolute; right: 0; bottom: 8%; width: min(320px, 70%); background: rgb(238 237 231 / .06); border: 1px solid var(--band-border); border-radius: 10px; padding: 16px 18px; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); min-height: 104px; }
.lc-item { display: none; gap: 4px; }
.lc-item.is-on { display: grid; animation: cardin .5s cubic-bezier(.2,.8,.2,1); }
.lc-item b { font: 700 1.3rem var(--font-display); color: var(--band-fg); }
.lc-item .label { color: var(--accent); }
.lc-src { color: var(--band-muted); line-height: 1.5; }
@keyframes cardin { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- demo ---------- */
.demo-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.demo-controls { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 18px; }
.demo-answer { margin: 18px 0 10px; font: 600 1.05rem/1.4 var(--font-body); min-height: 2.8em; }
.legend { display: flex; gap: 2px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.legend i { width: 34px; height: 12px; border-radius: 2px; display: inline-block; }
.legend span { margin: 0 8px; color: var(--muted); }
.demo-map-wrap { position: relative; }
.demo-map { display: grid; grid-template-columns: repeat(14, 1fr); gap: 4px; padding: 18px; background: var(--surface); border: 1px solid var(--border); border-radius: calc(var(--r) * 2); box-shadow: var(--shadow); transform: perspective(1400px) rotateX(10deg); transform-origin: bottom; }
.cell { aspect-ratio: 1; border-radius: 3px; border: 0; padding: 0; cursor: pointer; background: var(--tile-off); transition: background .55s ease, transform .4s cubic-bezier(.3,1.6,.4,1), box-shadow .3s; transition-delay: calc(var(--d, 0) * 6ms); }
.cell:hover, .cell:focus-visible { transform: translateY(-3px) scale(1.12); z-index: 2; box-shadow: 0 6px 14px -4px rgb(0 0 0 / .35); }
.cell.is-lift { transform: translate(6px, -14px) rotate(20deg) scale(1.25); box-shadow: 0 0 0 3px var(--bg), 0 14px 30px -8px var(--accent); z-index: 3; }
.cell.is-slot { outline: 1.5px dashed var(--fg); outline-offset: -2px; }
.demo-tip { position: absolute; z-index: 5; pointer-events: none; background: var(--fg); color: var(--bg); font-size: .75rem; padding: 6px 8px; border-radius: 4px; white-space: nowrap; transform: translate(-50%, -130%); }

/* ---------- sectors ---------- */
.sector-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: calc(var(--r) * 2); overflow: hidden; }
.sector { background: var(--bg); padding: 30px 28px 32px; transition: background .3s; display: grid; align-content: start; gap: 8px; }
.sector:hover { background: var(--surface); }
.sector-q { font: 700 1.22rem/1.3 var(--font-display); color: var(--fg); margin: 4px 0 8px; }
.sector .muted { font-size: .95rem; }

/* ---------- process ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; position: relative; }
.steps::before { content: ""; position: absolute; left: 0; right: 0; top: 13px; height: 2px; background: repeating-linear-gradient(90deg, var(--border) 0 8px, transparent 8px 14px); }
.step { position: relative; padding-top: 48px; }
.step-tile { position: absolute; top: 0; left: 0; width: 28px; height: 28px; border-radius: 6px; background: var(--fg); }
.step:last-child .step-tile { background: var(--accent); transform: rotate(20deg); }
.step p { color: var(--muted); font-size: .97rem; }
.models { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 56px; }
.models div { border: 1px solid var(--border); border-radius: calc(var(--r) * 2); padding: 22px; display: grid; gap: 6px; background: var(--surface); }
.models b { font: 700 1.1rem var(--font-display); }
.models span { color: var(--muted); font-size: .95rem; }

/* ---------- about ---------- */
.cred-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 64px; }
.cred { border-top: 2px solid var(--fg); padding-top: 18px; }
.cred-v { display: block; font: 800 clamp(2.6rem, 5vw, 4.2rem)/1 var(--font-display); letter-spacing: -.03em; margin-bottom: 10px; font-variant-numeric: tabular-nums; }
.cred:nth-child(1) .cred-v { color: var(--accent-text); }
.cred p { color: var(--muted); font-size: .95rem; }
.sister { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; background: var(--band-bg); color: var(--band-fg); border-radius: calc(var(--r) * 3); padding: clamp(28px, 5vw, 64px); overflow: hidden; position: relative; }
.sister .eyebrow { color: var(--accent); }
.sister .h2 { font-size: clamp(1.8rem, 3.2vw, 2.7rem); margin-bottom: 16px; }
.sister p { color: var(--band-muted); }
.sister-diagram { display: grid; gap: 12px; }
.sd-box { border: 1px solid var(--band-border); border-radius: var(--r); padding: 18px 20px; display: grid; gap: 4px; background: rgb(238 237 231 / .04); }
.sd-box span { color: var(--band-muted); }
.sd-box b { font: 700 1.2rem var(--font-display); }
.sd-k { border-color: var(--accent); }
.sd-join { height: 28px; display: grid; place-items: center; }
.sd-join span { width: 2px; height: 100%; background: repeating-linear-gradient(var(--accent) 0 4px, transparent 4px 8px); }
.sd-out { color: var(--accent); text-align: center; padding-top: 6px; }

/* ---------- faq ---------- */
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(32px, 5vw, 80px); align-items: start; }
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary { list-style: none; cursor: pointer; padding: 22px 40px 22px 0; font: 700 1.15rem/1.35 var(--font-display); position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary span { position: absolute; right: 4px; top: 50%; width: 16px; height: 16px; border-radius: 3px; background: var(--fg); transform: translateY(-50%); transition: transform .35s cubic-bezier(.3,1.6,.4,1), background .3s; }
.faq-item[open] summary span { background: var(--accent); transform: translateY(-30%) rotate(20deg); }
.faq-item p { color: var(--muted); padding-bottom: 22px; max-width: 64ch; margin: 0; }

/* ---------- contact ---------- */
.contact { background: var(--surface-2); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 5vw, 80px); align-items: start; }
.contact-dl { display: grid; gap: 4px 0; margin: 32px 0 0; }
.contact-dl dd { margin: 0 0 18px; font-size: 1.1rem; }

/* ---------- privacy page ---------- */
.prose { max-width: 720px; padding-block: 80px 120px; }
.prose h1 { font: 800 clamp(2.2rem, 5vw, 3.4rem)/1.05 var(--font-display); margin-bottom: 24px; }
.prose h2 { font: 700 1.3rem var(--font-display); margin: 34px 0 10px; }
.prose p, .prose li { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .service-grid, .product-grid { grid-template-columns: repeat(2, 1fr); }
  .cred-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 960px) {
  .hero-inner, .approach-grid, .demo-grid, .faq-grid, .contact-grid, .sister { grid-template-columns: 1fr; }
  .hero-stage::after { background: linear-gradient(0deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 72%, transparent) 55%, color-mix(in srgb, var(--bg) 40%, transparent) 100%); }
  .sector-grid { grid-template-columns: repeat(2, 1fr); }
  .steps, .models { grid-template-columns: repeat(2, 1fr); }
  .steps::before { display: none; }
  .layers { height: auto; }
  .layers-sticky { position: relative; height: auto; padding-block: 90px; }
  .layers-grid { grid-template-columns: 1fr; }
  .stack-scene { height: 520px; }
  .stack { width: min(66vw, 330px); --gap: 44px; }
  .plane.is-pending { opacity: 1; transform: translateZ(calc(var(--i) * var(--gap))); }
  .layer-list li { opacity: 1; border-left-color: var(--band-border); background: none; }
  .layer-list p { max-height: none; }
  .layer-card, .layer-meter { display: none; }
}
@media (max-width: 560px) {
  .demo-map { grid-template-columns: repeat(10, 1fr); padding: 10px; gap: 3px; }
}
@media (prefers-reduced-motion: reduce) {
  .strip-track { animation: none; }
  .demo-map { transform: none; }
}

/* ---------- phones and small tablets: 3D gets its own frame, rows become swipeable ---------- */
@media (max-width: 960px) {
  .hero { flex-direction: column; align-items: stretch; min-height: 0; padding-block: 36px 28px; }
  .hero-inner { order: 1; }
  .hero-stage { position: relative; inset: auto; order: 2; height: clamp(380px, 112vw, 500px); margin-top: 8px; z-index: 0; }
  .hero-stage::after { background: linear-gradient(180deg, var(--bg) 0%, transparent 14%, transparent 86%, var(--bg) 100%); }
  .hero-fallback { position: static; transform: none; width: 60%; margin: 40px auto; }
  .hero-steps-wrap { position: static; order: 3; padding-inline: var(--gutter); }
  .hero-steps { grid-template-columns: repeat(3, 1fr); padding: 8px; gap: 4px; max-width: none; }
  .hero-steps li { grid-template-columns: 1fr; gap: 2px; padding: 8px 6px; text-align: left; }
  .hero-steps small { display: none; }
  .hero-steps .hs-bar { grid-column: 1 / -1; }
  .scroll-cue { display: none; }
  .decision-card { width: 230px; padding: 12px 14px; }
  .decision-card b { font-size: 1rem; }
}
@media (max-width: 640px) {
  .swipe-hint { display: block; margin: -18px 0 14px; color: var(--muted); letter-spacing: .08em; }
  .swipe-hint::after { content: " \2192"; color: var(--accent-text); }
  .service-grid, .product-grid, .sector-grid, .steps { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; gap: 12px;
    margin-inline: calc(-1 * var(--gutter)); padding: 4px var(--gutter) 18px; scroll-padding-inline: var(--gutter);
    scrollbar-width: none; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; }
  .service-grid::-webkit-scrollbar, .product-grid::-webkit-scrollbar, .sector-grid::-webkit-scrollbar, .steps::-webkit-scrollbar { display: none; }
  .service-card, .product-card { flex: 0 0 86%; scroll-snap-align: start; padding: 22px; }
  .sector-grid { background: none; border: 0; border-radius: 0; }
  .sector { flex: 0 0 80%; scroll-snap-align: start; border: 1px solid var(--border); border-radius: calc(var(--r) * 2); background: var(--surface); }
  .step { flex: 0 0 74%; scroll-snap-align: start; border: 1px solid var(--border); border-radius: calc(var(--r) * 2); background: var(--surface); padding: 66px 20px 20px; }
  .step-tile { top: 20px; left: 20px; }
  .models { grid-template-columns: 1fr; gap: 10px; margin-top: 28px; }
  .section { padding-block: 72px; }
  .section-head { margin-bottom: 32px; }
  .ticks { font-size: .9rem; }
  .cred-grid { grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 40px; }
  .cred-v { font-size: 2.4rem; }
  .faq-item summary { font-size: 1.05rem; }
  .contact-form { padding: 18px; }
}