/* HUB 2.3: content-sized full viewport, readable type, no decorative copy. */
:root{--hero-header-size:100px;--hero-viewport:100vh}
@supports(height:100svh){:root{--hero-viewport:100svh}}
@supports(height:100dvh){:root{--hero-viewport:100dvh}}
.site-header{height:var(--hero-header-size)}
.hero.neural-hero{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(28px,5vw,76px);min-height:calc(var(--hero-viewport) - var(--hero-header-size));height:auto;align-content:center;padding-block:clamp(24px,4vh,56px);box-sizing:border-box}
.neural-hero .hero-copy{align-self:center;min-width:0}
.hero.neural-hero h1{font-size:clamp(3.25rem,5.65vw,5.5rem);line-height:1.04;letter-spacing:-.055em;text-wrap:balance}
.hero.neural-hero h1>span,.hero.neural-hero h1>em{display:block}
.hero.neural-hero h1>em{font-style:normal;color:var(--accent)}
.neural-hero .hero-description{font-size:clamp(1.0625rem,1.5vw,1.375rem);line-height:1.65;max-width:none;margin-top:28px;text-wrap:pretty}
.neural-hero .hero-actions{gap:24px;flex-wrap:wrap;margin-top:32px}
.neural-hero .hero-actions .button{font-size:15px;gap:14px;padding-inline:20px;min-height:50px}
.neural-hero .hero-actions .text-link{font-size:15px;min-height:48px}
.neural-demo{position:relative;min-width:0;max-width:640px;width:100%;justify-self:center;isolation:isolate;padding:20px 0 0;background:none;border:0;box-shadow:none}
.neural-info{position:absolute;right:0;top:0;display:grid;place-items:center;width:44px;height:44px;border-radius:50%;color:var(--muted);z-index:1;transition:color .2s,background .2s}
.neural-info svg{width:21px;height:21px;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}
.neural-info:hover{color:var(--accent);background:var(--surface)}
.neural-scene{display:block;width:100%;height:auto;aspect-ratio:620/270;margin:10px 0 4px;max-width:100%}
.neural-interaction{display:grid;grid-template-columns:minmax(0,196px) minmax(0,1fr);gap:clamp(20px,3vw,38px);align-items:center;border-top:1px solid var(--line);padding-top:22px}
.digit-input{min-width:0}
.digit-pad-wrap{position:relative;aspect-ratio:1;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface)}
.digit-pad-wrap::before{content:'';position:absolute;inset:0;pointer-events:none;background-image:radial-gradient(circle,var(--muted) .6px,transparent .8px);background-size:16px 16px;opacity:.2}
.digit-pad{position:absolute;inset:0;display:block;width:100%;height:100%;touch-action:none;cursor:crosshair;outline-offset:-4px!important}
.digit-hint{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none;color:var(--muted);gap:6px;font-size:14px;line-height:1.55;text-align:center}
.digit-hint svg{width:26px;height:26px;margin-bottom:4px;stroke:var(--accent);stroke-width:1.2;fill:none}
.digit-actions{display:flex;justify-content:space-between;gap:8px;margin-top:4px}
.digit-actions button,.neural-retry{border:0;background:transparent;color:var(--muted);font-size:13px;min-height:44px;padding:4px 0;text-decoration:underline;text-underline-offset:4px}
.digit-actions button:hover,.neural-retry:hover{color:var(--accent)}
.neural-result{min-width:0;align-self:center;padding-bottom:22px}
.prediction-label{font-size:14px;color:var(--muted)}
.prediction-main{display:flex;align-items:baseline;gap:14px;margin:4px 0 10px;min-height:88px}
.prediction-digit{font-size:76px;line-height:1.05;font-weight:450;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.06em}
.prediction-score{font-size:15px;color:var(--muted);font-variant-numeric:tabular-nums}
.neural-status{font-size:13px;line-height:1.6;color:var(--muted);min-height:42px;text-wrap:pretty}
.neural-bars{display:flex;gap:5px;align-items:flex-end;height:46px;margin-top:12px}
.neural-bar{flex:1;min-width:0;display:flex;height:100%;align-items:center;flex-direction:column;justify-content:flex-end;gap:5px;font-size:11px;color:var(--muted)}
.neural-bar i{display:block;width:100%;height:max(2px,calc(var(--value,0)*26px));background:var(--accent);opacity:.3;border-radius:2px;transition:height .3s,opacity .3s}
.neural-bar.is-top i{opacity:1}
.neural-demo[data-state=error] .neural-status{color:var(--text)}
.neural-noscript{font-size:14px;color:var(--muted);line-height:1.7;padding-block:16px}
@media(max-width:1100px) and (min-width:781px){.hero.neural-hero{gap:32px}.hero.neural-hero h1{font-size:clamp(3.25rem,5.8vw,4.5rem)}.neural-interaction{grid-template-columns:minmax(0,164px) minmax(0,1fr);gap:22px}.neural-hero .hero-actions{gap:16px}.neural-hero .hero-actions .button,.neural-hero .hero-actions .text-link{font-size:14px}.neural-hero .hero-actions .button{padding-inline:16px}.prediction-digit{font-size:66px}.prediction-main{min-height:76px}}
@media(max-width:780px){.hero.neural-hero{grid-template-columns:minmax(0,1fr);gap:28px;padding-block:24px 32px;min-height:calc(var(--hero-viewport) - var(--hero-header-size))}.neural-hero .hero-copy{max-width:640px;width:100%;justify-self:center}.hero.neural-hero h1{font-size:clamp(2.625rem,7.5vw,4rem);line-height:1.06}.neural-hero .hero-description{font-size:18px;margin-top:20px}.neural-hero .hero-actions{gap:20px;margin-top:24px}.neural-hero .hero-actions .button,.neural-hero .hero-actions .text-link{font-size:14px}.neural-hero .hero-actions .button{padding-inline:16px;gap:10px}.neural-demo{max-width:520px;padding-top:8px}.neural-interaction{grid-template-columns:minmax(0,170px) minmax(0,1fr);gap:24px;padding-top:16px}.neural-scene{margin-top:16px}.prediction-main{min-height:72px}.prediction-digit{font-size:64px}.neural-result{padding-bottom:20px}}
@media(max-width:700px){:root{--hero-header-size:82px}}
@media(max-width:420px){.hero.neural-hero{gap:22px;padding-block:16px 24px}.hero.neural-hero h1{font-size:clamp(2.5rem,10.8vw,2.875rem)}.neural-hero .hero-description{font-size:17px;margin-top:18px}.neural-hero .hero-actions{gap:16px;margin-top:20px}.neural-hero .hero-actions .button{padding-inline:12px;font-size:13px;min-height:46px}.neural-hero .hero-actions .text-link{font-size:13px}.neural-interaction{grid-template-columns:minmax(0,144px) minmax(0,1fr);gap:20px}.digit-hint{font-size:12px}.digit-actions button{font-size:12px}.prediction-digit{font-size:58px}.prediction-main{gap:10px;min-height:66px}.prediction-score{font-size:13px}.prediction-label{font-size:13px}.neural-status{font-size:12px;min-height:38px}.neural-bars{gap:4px;margin-top:8px;height:40px}}
@media(max-width:359px){.neural-interaction{grid-template-columns:minmax(0,128px) minmax(0,1fr);gap:16px}.hero.neural-hero h1{font-size:2.5rem}.neural-hero .hero-actions{gap:10px 18px}.prediction-score{font-size:12px}.neural-bars{gap:3px}.digit-actions{gap:4px}.digit-actions button{font-size:11px}}
@media(max-height:650px) and (min-width:781px){.hero.neural-hero{padding-block:18px;gap:32px}.hero.neural-hero h1{font-size:clamp(2.75rem,4.8vw,4.25rem)}.neural-hero .hero-description{margin-top:18px}.neural-hero .hero-actions{margin-top:22px}.neural-demo{max-width:500px}.neural-scene{width:min(100%,400px);margin-inline:auto}.neural-interaction{grid-template-columns:minmax(0,144px) minmax(0,1fr);gap:22px;padding-top:14px}.prediction-main{min-height:68px}.prediction-digit{font-size:58px}}
@media(max-width:780px) and (max-height:800px){.hero.neural-hero{gap:20px;padding-block:18px 24px}.neural-demo{max-width:460px}.neural-scene{height:130px;aspect-ratio:auto}.neural-interaction{grid-template-columns:minmax(0,144px) minmax(0,1fr);gap:20px;padding-top:14px}.neural-result{padding-bottom:16px}.neural-hero .hero-description{margin-top:16px}.neural-hero .hero-actions{margin-top:20px}}
@media(min-width:701px) and (max-width:780px) and (max-height:700px){.hero.neural-hero{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:24px}.hero.neural-hero h1{font-size:2.75rem}.neural-hero .hero-description{font-size:17px}.neural-interaction{grid-template-columns:minmax(0,124px) minmax(0,1fr);gap:16px}.digit-actions button{font-size:11px}.prediction-main{min-height:64px}.prediction-digit{font-size:54px}.neural-status{font-size:12px}.prediction-score{font-size:12px}}
@media(max-width:359px){.hero.neural-hero h1{font-size:2.25rem;letter-spacing:-.06em}.neural-hero .hero-description{font-size:16px}.neural-hero .hero-actions{gap:12px}.neural-hero .hero-actions .button{flex:1 1 140px;min-width:0;padding:10px;line-height:1.45;gap:6px}.neural-hero .hero-actions .text-link{flex:0 0 auto;gap:6px}.neural-interaction{grid-template-columns:minmax(0,128px) minmax(0,1fr);gap:16px}.prediction-main{min-height:62px}.prediction-digit{font-size:54px}}
@media(prefers-reduced-motion:reduce){.neural-bar i,.neural-info{transition:none}.neural-demo.intro-step{animation:none}}