/* AinFlash v4 — design layer over the approved v2/v3 system.
   Keeps palette, typography scale, logo and structure; adds readability floors,
   meaningful interactive pieces and a few signature motions. */

:root{--orange-soft:#f4562522;--ink-2:#2f332b}

/* ---------- 1. Readability floors (micro labels were 6–9px) ---------- */
.eyebrow{font-size:11px;letter-spacing:1.4px}
.section-index{font-size:10.5px}
.stage-coordinate{font-size:10px}
.callout{font-size:10px}.callout-a b{font-size:11.5px}
.stage-caption{font-size:10px}
.hero-bottom{font-size:10px}
.hero-description{font-size:15.5px}
.hero-facts{font-size:12px}
.split-heading>p{font-size:15px;max-width:360px}
.section-lead{font-size:15px}
.benefit-grid p{font-size:13.5px}
.micro{font-size:11px}
.product-card .eyebrow,.product-tag{font-size:10px}
.product-card>p{font-size:14px}
.product-features li{font-size:12.5px}
.price small{font-size:10.5px}
.article-meta,.journal-art>span{font-size:10px}
.journal-card h3{font-size:17px}
summary{font-size:15px}
.faq-list details p{font-size:14px}
.faq-heading>p{font-size:14px}
.step p{font-size:13.5px}
.step-detail p{font-size:14px}
.size-explainer{font-size:12px}
.spec-help summary{font-size:12.5px}.spec-help p,.spec-help li,.spec-help>div{font-size:12px}
#result-copy{font-size:13.5px}
.terminal-top,.terminal-bottom,.terminal-bottom button{font-size:10px}
.ai-label,.prompt-label{font-size:10px}.ai-label>span:last-child{font-size:9px}
.demo-prompt,.demo-answer{font-size:14.5px}
.scenario-tabs button{font-size:15px}.scenario-tabs button>span{font-size:10px}
.model-card p{font-size:13px}
.honest-note{font-size:11px}
.footer-note{font-size:10.5px}.footer-bottom{font-size:10.5px}.footer-top>span{font-size:10px}
.catalog-filters button{font-size:12.5px}
.catalog-toolbar p{font-size:13px}

/* ---------- 2. Hero: warm light under the cursor ---------- */
.hero:before{content:'';position:absolute;inset:0;pointer-events:none;z-index:0;opacity:0;transition:opacity .6s;
  background:radial-gradient(520px circle at var(--mx,70%) var(--my,45%),#f4562514,transparent 62%)}
.hero.lit:before{opacity:1}
.hero.lit .hero-grid{-webkit-mask-image:radial-gradient(420px circle at var(--mx) var(--my),#000 0,#0008 45%,transparent 75%),linear-gradient(90deg,transparent 30%,#000 100%);mask-image:radial-gradient(420px circle at var(--mx) var(--my),#000 0,#0008 45%,transparent 75%),linear-gradient(90deg,transparent 30%,#000 100%);background-image:linear-gradient(#c9cbbd90 1px,transparent 1px),linear-gradient(90deg,#c9cbbd90 1px,transparent 1px)}

/* capacity toggle on the 3D stage */
.capacity-toggle{pointer-events:auto;cursor:pointer;display:flex;align-items:center;gap:2px;color:inherit;font-family:var(--mono);transition:border-color .25s,background .25s,transform .25s}
.capacity-toggle:hover{border-color:var(--orange);background:#fff8}
.capacity-toggle .capacity-swap{margin-left:8px;color:var(--orange);font-size:13px;line-height:1;transition:transform .4s var(--ease)}
.capacity-toggle[aria-pressed=true] .capacity-swap{transform:rotate(180deg)}
.capacity-toggle:active{transform:scale(.97)}

/* ---------- 3. Ticker strip ---------- */
.feature-strip.is-ticker{display:block;overflow:hidden;padding:0;white-space:nowrap;position:relative;font-size:11px}
.feature-strip.is-ticker:before,.feature-strip.is-ticker:after{content:'';position:absolute;top:0;bottom:0;width:8%;z-index:1;pointer-events:none}
.feature-strip.is-ticker:before{left:0;background:linear-gradient(90deg,var(--ink),transparent)}
.feature-strip.is-ticker:after{right:0;background:linear-gradient(-90deg,var(--ink),transparent)}
.ticker{display:flex;width:max-content;animation:ticker 48s linear infinite}
.ticker-group{display:flex;align-items:center;gap:46px;padding:20px 23px}
.ticker-group>span{display:inline-flex!important}
.feature-strip.is-ticker:hover .ticker{animation-play-state:paused}
@keyframes ticker{to{transform:translateX(-50%)}}

/* ---------- 4. Glossary ---------- */
.glossary{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:-6px 0 20px;max-width:380px}
.glossary-label{font:500 10px var(--mono);letter-spacing:.6px;color:#536046;margin-right:4px;text-transform:uppercase}
.glossary [data-term]{font:600 11.5px Manrope,sans-serif;padding:5px 10px;border-radius:30px;background:transparent;border:1px dashed #9aa58a;color:var(--ink);transition:background .2s,border-color .2s,color .2s}
.glossary [data-term]:hover{border-color:var(--orange);color:#ac3817}
.glossary [data-term][aria-expanded=true]{background:var(--ink);color:#fff;border:1px solid var(--ink)}
.glossary-text{flex-basis:100%;margin-top:8px;padding:12px 14px;background:#f1f0eacc;border-left:2px solid var(--orange);font-size:12.5px;line-height:1.65;color:#3d4436;border-radius:0 4px 4px 0;animation:gloss-in .35s var(--ease)}
.glossary-text b{font-weight:700;color:var(--ink)}
@keyframes gloss-in{from{opacity:0;transform:translateY(-4px)}}

/* ---------- 5. Memory map (replaces the abstract 12-bar meter) ---------- */
.memory-map{width:100%;margin:22px 0 14px;padding:16px 16px 14px;background:#f1f0ea99;border:1px solid #c9cfbd;border-radius:6px;position:relative;z-index:1}
.mm-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:12px}
.mm-head .eyebrow{font-size:10px}
.mm-hint{font:10px var(--mono);color:#5c6652}
.mm-bar{display:grid;grid-template-columns:42px 1fr 46px;align-items:center;gap:10px;margin-bottom:8px}
.mm-name,.mm-cap{font:600 10px var(--mono);color:#3d4436}
.mm-cap{text-align:right}
.mm-track{display:flex;height:16px;border-radius:3px;overflow:hidden;background:#d9ddcf;box-shadow:inset 0 0 0 1px #c3c9b5}
.mm-track i{display:block;height:100%;width:0;transition:width .7s var(--ease)}
.mm-track i[hidden]{display:block!important;width:0!important}
i.mm-sys{background:#5d6553}
i.mm-model{background:var(--orange);box-shadow:inset 0 1px #ffffff40}
i.mm-ctx{background:repeating-linear-gradient(-45deg,#f45625 0 3px,#f8996f 3px 6px)}
i.mm-free{background:repeating-linear-gradient(90deg,transparent 0 7px,#c3c9b5 7px 8px)}
.mm-legend{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:11.5px;color:#3d4436}
.mm-legend li{display:flex;align-items:center;gap:6px}
.mm-legend i{width:10px;height:10px;border-radius:2px;flex:none}
.mm-legend i.mm-free{box-shadow:inset 0 0 0 1px #aab39c}
.mm-note{font-size:12px;line-height:1.6;color:#4d5a42;margin-top:10px}
.fit-models{width:100%;margin:6px 0 18px;position:relative;z-index:1}
.fit-models .eyebrow{font-size:10px}
.fit-list{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.fit-chip{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:9px 12px;border:1px solid #bfc6b1;border-radius:5px;background:#f1f0ea;text-align:left;transition:border-color .2s,transform .2s,box-shadow .2s}
.fit-chip b{font-size:12.5px;font-weight:650}
.fit-chip span{font:10px var(--mono);color:#5c6652}
.fit-chip:hover{border-color:var(--orange);transform:translateY(-2px);box-shadow:0 8px 18px #2a301f14}

/* ---------- 6. Catalog cards ---------- */
.model-card{display:flex;flex-direction:column;gap:0;background:#f4f3ee;transition:border-color .25s,transform .25s,box-shadow .25s;position:relative}
.model-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px #2a301f12}
.model-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.model-top>span{font:10px var(--mono);color:#58644d;letter-spacing:.5px}
.model-tag{font:600 10px Manrope,sans-serif;padding:3px 8px;border-radius:20px;background:#e4e8da;color:#3f4a35}
.model-card h4{font-size:18px}
.model-card p{flex:1}
.model-scale{height:4px;background:#dfe2d6;border-radius:2px;margin:16px 0 8px;overflow:hidden}
.model-scale i{display:block;height:100%;width:var(--size);background:linear-gradient(90deg,#3c4235,var(--orange))}
.model-meta{display:flex;justify-content:space-between;gap:8px;font:10px var(--mono);color:#58644d}
.model-fit{align-self:flex-start;margin-top:12px;font:600 10px var(--mono);letter-spacing:.4px;padding:4px 8px;border-radius:3px;background:var(--orange-soft);color:#ac3817}
.model-card.fits{border-color:#e9a184}
.model-card.spotlight{animation:spot 2.4s var(--ease)}
@keyframes spot{0%,60%{box-shadow:0 0 0 3px var(--orange),0 18px 40px #f4562530}100%{box-shadow:0 0 0 0 transparent}}

/* ---------- 7. Product cards with real 3D renders ---------- */
.product-card{position:relative;isolation:isolate}
.product-render-wrap{perspective:900px;width:190px;height:200px;margin:-30px -10px -40px 0;display:grid;place-items:center;flex:none}
.product-render{width:auto;height:228px;max-width:none;transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) rotate(12deg);transition:transform .5s var(--ease);filter:drop-shadow(18px 26px 22px #1d26162e)}
.pro .product-render{filter:drop-shadow(18px 26px 22px #0008)}
.product-card:hover .product-render{transition:transform .12s linear}
.product-card:after{content:'';position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .5s;background:radial-gradient(420px circle at 85% 18%,#f4562522,transparent 60%)}
.product-card:hover:after{opacity:1}
.pick-badge{display:inline-flex;align-items:center;gap:8px;margin-top:14px;font:600 10.5px var(--mono);letter-spacing:.4px;padding:6px 10px;border-radius:3px;background:var(--orange);color:#20241b;animation:gloss-in .4s var(--ease)}
.pick-badge:before{content:'';width:6px;height:6px;border-radius:50%;background:#20241b}

/* ---------- 8. Streaming demo ---------- */
.demo-answer.is-typing:after,.demo-answer.is-thinking:after{content:'';display:inline-block;width:8px;height:1.05em;margin-left:3px;vertical-align:-2px;background:#ff7448;animation:caret 1s steps(1) infinite}
.demo-answer.is-thinking:before{content:'модель думает';font:10px var(--mono);letter-spacing:1px;color:#8d9680;margin-right:4px}
.demo-answer{min-height:9.5em}
@keyframes caret{50%{opacity:0}}

/* ---------- 9. Reveals (only added by JS when motion is allowed) ---------- */
.section.entered .split-heading,.section.entered>h2,.section.entered .experience-grid,.section.entered .benefit-grid,.section.entered .product-grid{animation:none}
.v4-reveal{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease) var(--d,0ms),transform 1s var(--ease) var(--d,0ms)}
h2.v4-reveal{clip-path:inset(0 0 100% 0);transform:translateY(40px);transition:clip-path 1s var(--ease) var(--d,0ms),transform 1s var(--ease) var(--d,0ms),opacity .4s var(--d,0ms)}
.v4-reveal.in{opacity:1;transform:none}
h2.v4-reveal.in{clip-path:inset(-20% -5% -25% -5%)}
.cta-asterisk{animation:none;transform:rotate(var(--spin,0deg))}

/* ---------- 10. Responsive ---------- */
@media(max-width:1100px){.hero-description{font-size:14.5px}.hero-facts{font-size:11px}.product-render-wrap{width:160px}.product-render{height:200px}}
@media(max-width:850px){
  .hero-copy .eyebrow{font-size:10px}.callout-b{font-size:9.5px}.stage-coordinate,.stage-caption{font-size:9.5px}
  .hero-description{font-size:14px}.split-heading>p{font-size:14px}.feature-strip.is-ticker{font-size:10.5px}
  .terminal-top{font-size:9.5px}.product-features li{font-size:12px}
}
@media(max-width:600px){
  .eyebrow{font-size:10px;letter-spacing:1.1px}
  .hero-copy .eyebrow{font-size:9.5px;letter-spacing:1.1px}
  .hero-description{font-size:14.5px}
  .hero-facts{font-size:11px;gap:12px}
  .hero-ctas .button,.hero-ctas .text-link{font-size:12px}
  .stage-caption{font-size:9.5px}.callout-b{font-size:9px;bottom:118px}
  .hero-bottom{font-size:9.5px}
  .split-heading>p{font-size:14.5px}
  .feature-strip.is-ticker{font-size:10.5px;min-height:0}
  .ticker-group{gap:30px;padding:18px 15px}
  .feature-strip>span:nth-last-child(-n+2){display:inline-flex}
  .product-render-wrap{width:130px;height:170px;margin:-20px -8px -20px 0}.product-render{height:175px}
  .memory-map{padding:13px 12px}.mm-bar{grid-template-columns:36px 1fr 40px;gap:8px}
  .mm-legend{font-size:11px}
  .glossary{max-width:none}
  .model-card h4{font-size:17px}
}
@media(prefers-reduced-motion:reduce){.v4-reveal{opacity:1!important;transform:none!important;clip-path:none!important}.ticker{animation:none}.feature-strip.is-ticker .ticker-group[aria-hidden]{display:none}}
.motion-paused .v4-reveal{opacity:1;transform:none;clip-path:none}

/* ---------- 11. Anatomy: scroll-driven exploded view (layers rendered from the same 3D model) ---------- */
.anatomy{position:relative;overflow-x:clip;background:linear-gradient(#f1f0ea,#ebeae2);border-bottom:1px solid var(--line);--e:1;--p:1}
.anatomy-sticky{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:4%;padding:92px 6% 80px;max-width:1800px;margin:auto;align-items:center}
.anatomy-copy .section-top{margin-bottom:34px}
.anatomy h2{margin-bottom:22px}
.anatomy-lead{font-size:15px;color:#5d6555;max-width:440px}
.anatomy-steps{list-style:none;padding:0;margin:34px 0 0;max-width:470px;counter-reset:a}
.anatomy-steps li{display:grid;grid-template-columns:44px 1fr;gap:6px;padding:16px 0;border-top:1px solid var(--line);transition:opacity .45s,transform .45s var(--ease)}
.anatomy-steps li:last-child{border-bottom:1px solid var(--line)}
.anatomy-steps li>span{font:600 12px var(--mono);color:#ac3817;padding-top:3px}
.anatomy-steps h3{font-size:17px;letter-spacing:-.3px;margin-bottom:5px}
.anatomy-steps p{font-size:13.5px;line-height:1.65;color:#5d6555}
.anatomy-stage{position:relative;aspect-ratio:1/1.02;max-height:78vh;justify-self:center;width:100%;max-width:680px}
.an-rings{position:absolute;inset:6%;border-radius:50%;border:1px solid #cfd2c4;opacity:calc(.4 + var(--e)*.6)}
.an-rings:before,.an-rings:after{content:'';position:absolute;border-radius:50%;border:1px dashed #d3d6c8;inset:14%}
.an-rings:after{inset:-7%;border-style:solid;border-color:#e0e2d7}
.anatomy-stage{container-type:size}
.an-box{position:absolute;top:50%;left:50%;aspect-ratio:785/986;height:auto;width:min(100cqw,100cqh*.796);transform:translate(-50%,-50%)}
.an-layer{position:absolute;inset:0;transform:translate(calc(var(--dx)*var(--e)),calc(var(--dy)*var(--e)));transition:opacity .45s,filter .45s;will-change:transform}
.an-layer img{display:block;width:100%;height:100%;filter:drop-shadow(14px 22px 18px #1f281826)}
.an-marker{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%) scale(calc(.6 + .4*var(--mk,1)));opacity:var(--mk,1);width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#f1f0ea;border:1px solid #9aa58a;font:600 10px var(--mono);color:var(--ink);z-index:3;transition:background .3s,color .3s,border-color .3s,box-shadow .3s}
.an-marker.on{background:var(--orange);border-color:var(--orange);color:#20241b;box-shadow:0 0 0 7px #f4562524,0 0 0 15px #f4562512}
.an-pc{position:absolute;left:79%;top:-1%;z-index:3;display:flex;align-items:flex-start;gap:10px;opacity:0;transform:translateY(8px);transition:opacity .45s,transform .45s var(--ease);pointer-events:none}
.an-pc i{width:46px;height:30px;border-top:1px dashed var(--orange);border-right:1px dashed var(--orange);margin-top:9px;flex:none}
.an-pc span{font:10.5px/1.55 var(--mono);color:#4b5342;white-space:nowrap}
.an-pc b{font-weight:600;color:var(--ink)}
.an-pc.on{opacity:1;transform:none}
.an-rail{position:absolute;left:50%;bottom:-14px;width:120px;height:2px;margin-left:-60px;background:#d3d6c8;overflow:hidden;opacity:0}
.an-rail i{display:block;height:100%;width:calc(var(--p)*100%);background:var(--orange)}
/* scroll mode (JS adds .is-scrolly only when motion is allowed) */
.anatomy.is-scrolly{height:300vh}
.anatomy.is-scrolly .anatomy-sticky{position:sticky;top:88px;height:calc(100vh - 88px);padding-top:30px;padding-bottom:30px}
.anatomy.is-scrolly .an-rail{opacity:1}
.anatomy.is-scrolly .anatomy-steps li{opacity:.32}
.anatomy.is-scrolly .anatomy-steps li.on{opacity:1}
.anatomy.is-scrolly .anatomy-steps li.on>span{color:var(--orange)}
.anatomy.is-scrolly.opened .an-layer.dim{opacity:.3;filter:saturate(.4)}
.anatomy:not(.is-scrolly) .an-pc{opacity:1;transform:none}
@media(max-width:1100px){.anatomy-steps p{font-size:13px}.anatomy-steps li{padding:12px 0}.an-pc span{font-size:9.5px}}
@media(max-width:850px){
  .anatomy-sticky{grid-template-columns:1fr;gap:20px;padding:60px 6% 50px}
  .anatomy-stage{max-width:420px;max-height:none}
  .an-pc{left:auto;right:0;top:-4%}.an-pc i{display:none}.an-pc span{white-space:normal;max-width:150px;text-align:right;font-size:10px}
  .anatomy.is-scrolly{height:340vh}
  .anatomy.is-scrolly .anatomy-sticky{top:74px;height:calc(100svh - 74px);grid-template-rows:auto 1fr;align-content:start;gap:8px;padding:18px 6% 14px}
  .anatomy.is-scrolly .anatomy-stage{grid-row:2;height:100%;max-height:none;aspect-ratio:auto;width:100%;max-width:100%;min-height:0}
  .anatomy.is-scrolly .an-box{width:min(92cqw,92cqh*.796)}
  .anatomy.is-scrolly .an-rings{inset:10% 4%}
  .anatomy.is-scrolly .anatomy-copy{grid-row:1}
  .anatomy.is-scrolly .anatomy-copy .section-top,.anatomy.is-scrolly .anatomy-lead{display:none}
  .anatomy.is-scrolly h2{font-size:30px;letter-spacing:-1.3px;margin-bottom:10px}
  .anatomy.is-scrolly .anatomy-steps{margin-top:6px;position:relative;min-height:148px}
  .anatomy.is-scrolly .anatomy-steps li{position:absolute;inset:0 0 auto 0;opacity:0;transform:translateY(10px);border:0;padding:6px 0}
  .anatomy.is-scrolly .anatomy-steps li.on{opacity:1;transform:none}
}
@media(max-width:850px) and (max-height:700px){.anatomy.is-scrolly h2{font-size:24px}.anatomy.is-scrolly .anatomy-steps{min-height:132px}.anatomy.is-scrolly .anatomy-steps p{font-size:12.5px}}

/* ---------- 12. Tactile finish: fine grain on dark/orange planes, magnetic primary CTAs ---------- */
.dark-section,.final-cta,.footer{position:relative}
.dark-section:after,.final-cta:after{content:'';position:absolute;inset:0;pointer-events:none;opacity:.07;mix-blend-mode:overlay;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.final-cta:after{opacity:.12}
.magnetic{transition:transform .35s var(--ease),background .25s}
.magnetic.pulling{transition:transform .08s linear,background .25s}