:root{
  --bg:#efeee8;
  --ink:#111112;
  --accent:#e5322d;
  --on:#fff;
  --line:rgba(17,17,18,.2);
  --disp:'Syne',system-ui,sans-serif;
  --sans:'Space Grotesk',system-ui,sans-serif;
  --mono:'Space Mono',ui-monospace,monospace;
  --rail:84px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.55;overflow-x:hidden;padding-left:var(--rail);transition:background .5s}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
::selection{background:var(--accent);color:var(--on)}
.acc{color:var(--accent);transition:color .4s}
.meta{font-family:var(--mono);font-size:13px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:18px}

/* Riel lateral */
.rail{position:fixed;left:0;top:0;bottom:0;width:var(--rail);z-index:50;background:var(--ink);color:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:22px 0}
.rail-logo{writing-mode:vertical-rl;transform:rotate(180deg);font-family:var(--disp);font-weight:800;font-size:34px;line-height:1;letter-spacing:-.02em}
.rail-logo sup{font-size:12px;color:var(--accent)}
.rail nav{display:flex;flex-direction:column;gap:4px;width:100%}
.rail nav a{display:flex;flex-direction:column;align-items:center;padding:7px 0;font-size:10px;text-transform:uppercase;letter-spacing:.08em;opacity:.55;transition:.2s;position:relative}
.rail nav a i{font-style:normal;font-family:var(--mono);font-size:14px;margin-bottom:1px}
.rail nav a:hover,.rail nav a.on{opacity:1}
.rail nav a.on::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;background:var(--accent)}
.remito-btn{background:var(--accent);color:var(--on);border:0;padding:8px 6px;width:66px;font-family:var(--mono);font-size:11px;text-transform:uppercase;transition:.2s}
.remito-btn b{display:block;font-size:20px;line-height:1}
.remito-btn.bump{animation:bump .4s}
@keyframes bump{40%{transform:scale(1.15) rotate(-4deg)}}

.btn{display:inline-block;background:var(--accent);color:var(--on);border:2px solid var(--ink);padding:15px 30px;font-weight:700;font-size:16px;text-transform:uppercase;letter-spacing:.04em;transition:transform .2s,box-shadow .2s,background .4s,color .4s;text-align:center}
.btn:hover{transform:translate(-3px,-3px);box-shadow:6px 6px 0 var(--ink)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.full{display:block;width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed}

/* Hero */
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:20px;align-items:center;min-height:100vh;padding:60px 4vw 40px}
h1{font-family:var(--disp);font-weight:800;font-size:clamp(54px,8vw,138px);line-height:.88;letter-spacing:-.04em;margin-bottom:22px}
.lead{max-width:44ch;font-size:19px;margin-bottom:24px}
.hero-colors,.color-bar{display:flex;flex-wrap:wrap;gap:10px}
.dot{width:46px;height:46px;border-radius:50%;border:3px solid var(--ink);background:var(--c);padding:0;position:relative;transition:transform .2s cubic-bezier(.3,1.8,.5,1)}
.dot:hover{transform:scale(1.18)}
.dot[aria-checked="true"]{outline:4px solid var(--ink);outline-offset:3px;transform:scale(1.08)}
.cname{font-family:var(--mono);font-size:14px;margin:12px 0 26px;text-transform:uppercase}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-r{position:relative;display:grid;place-items:center;min-height:min(80vh,680px)}
.plinth{position:absolute;width:min(560px,90%);aspect-ratio:1;border-radius:50%;background:var(--accent);transition:background .5s;display:grid;place-items:center;overflow:hidden}
.big-n{font-family:var(--disp);font-weight:800;font-size:clamp(200px,30vw,440px);color:rgba(0,0,0,.12);line-height:.8;letter-spacing:-.06em}
.hero-chair{position:relative;width:min(380px,72%);filter:drop-shadow(0 24px 22px rgba(0,0,0,.25));animation:float 5s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-12px) rotate(1deg)}}
.hero-chair svg,.g-chair svg{display:block;width:100%;height:auto;overflow:visible}
.tag-float{position:absolute;bottom:2%;right:2%;background:var(--ink);color:var(--bg);font-family:var(--mono);font-size:12px;padding:6px 12px;text-transform:uppercase}

.marquee{background:var(--ink);color:var(--bg);overflow:hidden;padding:14px 0}
.mq-in{display:flex;width:max-content;animation:mq 30s linear infinite;font-family:var(--disp);font-weight:800;font-size:30px;text-transform:uppercase}
.mq-in span{padding:0 30px}
.mq-in span::after{content:"●";margin-left:60px;color:var(--accent);font-size:20px;vertical-align:middle}
@keyframes mq{to{transform:translateX(-50%)}}

/* Secciones */
.sec{padding:120px 4vw 0;max-width:1500px}
.sec.dark{max-width:none;background:var(--ink);color:var(--bg);margin-top:120px;padding:100px 4vw}
.head{margin-bottom:44px;max-width:900px}
h2{font-family:var(--disp);font-weight:800;font-size:clamp(40px,5.6vw,92px);line-height:.92;letter-spacing:-.04em}
.sub{margin-top:16px;max-width:52ch;font-size:19px}
.disc{margin-top:26px;font-family:var(--mono);font-size:13px;text-transform:uppercase}

/* Galería */
.color-bar{margin-bottom:40px;position:sticky;top:0;z-index:20;background:var(--bg);padding:14px 0;border-bottom:2px solid var(--ink)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--ink);border-left:2px solid var(--ink)}
.exh{position:relative;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);padding:24px 24px 22px;display:flex;flex-direction:column;gap:12px;background:var(--bg);transition:background .3s}
.exh:hover{background:#fff}
.exh .no{font-family:var(--mono);font-size:13px}
.g-chair{height:300px;display:flex;align-items:flex-end;justify-content:center;margin:6px 0}
.g-chair svg{height:100%;width:auto;transition:transform .5s cubic-bezier(.3,1.5,.5,1);transform-origin:50% 100%}
.exh:hover .g-chair svg{transform:scale(1.06) rotate(-2deg)}
.exh h3{font-family:var(--disp);font-weight:800;font-size:32px;line-height:1;letter-spacing:-.03em}
.exh p{font-size:15px;line-height:1.35}
.specs{display:grid;grid-template-columns:repeat(3,1fr);border:2px solid var(--ink);font-family:var(--mono);font-size:12px}
.specs div{padding:6px 8px;border-right:2px solid var(--ink)}
.specs div:last-child{border:0}
.specs small{display:block;opacity:.6;font-size:10px;text-transform:uppercase}
.exh-buy{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto}
.step{display:inline-flex;align-items:center;border:2px solid var(--ink)}
.step button{width:34px;height:36px;background:none;border:0;font-weight:700;font-size:18px}
.step button:hover{background:var(--ink);color:var(--bg)}
.step span{min-width:30px;text-align:center;font-family:var(--mono);font-weight:700}
.exh .pr{font-family:var(--disp);font-weight:800;font-size:26px;letter-spacing:-.03em;text-align:right;line-height:1}
.exh .pr small{display:block;font-family:var(--mono);font-weight:400;font-size:11px;letter-spacing:0;opacity:.7}
.exh .addb{background:var(--ink);color:var(--bg);border:0;padding:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:14px;transition:.2s}
.exh .addb:hover{background:var(--accent);color:var(--on)}

/* Apilador */
.dark .meta,.dark .sub{color:var(--bg)}
.stacker{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:end}
.st-view{position:relative;height:620px;display:flex;align-items:flex-end;justify-content:center}
.st-chairs{height:100%;width:100%;display:flex;align-items:flex-end;justify-content:center;padding-bottom:12px}
.st-chairs svg{height:100%;width:auto;max-width:100%;overflow:visible;transition:height .5s cubic-bezier(.3,1.2,.5,1)}
.floor{position:absolute;left:0;right:0;bottom:0;height:4px;background:var(--accent)}
.big-range{display:grid;grid-template-columns:1fr auto;gap:8px;margin-bottom:30px}
.big-range span{font-family:var(--mono);font-size:13px;text-transform:uppercase}
.big-range output{font-family:var(--disp);font-weight:800;font-size:64px;line-height:.9;letter-spacing:-.04em;color:var(--accent);grid-row:1/3;grid-column:2}
.big-range input{grid-column:1/-1}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:10px;background:currentColor;opacity:1;outline:none;border-radius:0;background:linear-gradient(90deg,var(--accent) var(--p,50%),rgba(128,128,128,.4) var(--p,50%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:32px;height:32px;background:var(--bg);border:4px solid var(--ink);cursor:grab;border-radius:0}
.dark input[type=range]::-webkit-slider-thumb{border-color:var(--bg);background:var(--ink)}
input[type=range]::-moz-range-thumb{width:24px;height:24px;background:var(--bg);border:4px solid var(--ink);border-radius:0;cursor:grab}
.st-stats{display:grid;grid-template-columns:repeat(3,1fr);border:2px solid var(--bg);margin-bottom:24px}
.st-stats div{padding:14px;border-right:2px solid var(--bg)}
.st-stats div:last-child{border:0}
.st-stats small{display:block;font-family:var(--mono);font-size:11px;text-transform:uppercase;opacity:.7}
.st-stats b{font-family:var(--disp);font-weight:800;font-size:28px;letter-spacing:-.03em}
.check{display:flex;gap:10px;align-items:center;font-size:16px;margin-bottom:24px}
.check input{width:22px;height:22px;accent-color:var(--accent)}
.st-buy{display:flex;justify-content:space-between;align-items:center;gap:16px;border-top:2px solid var(--bg);padding-top:22px}
.st-buy small{display:block;font-family:var(--mono);font-size:12px;text-transform:uppercase;opacity:.7}
.st-buy b{font-family:var(--disp);font-weight:800;font-size:52px;line-height:1;letter-spacing:-.04em}
.st-buy em{display:block;font-style:normal;font-family:var(--mono);font-size:12px;opacity:.7}
.dark .btn{border-color:var(--bg)}
.dark .btn:hover{box-shadow:6px 6px 0 var(--bg)}

/* Test */
.test{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.test-view{position:relative;height:520px;background:#fff;border:2px solid var(--ink);display:flex;align-items:flex-end;justify-content:center;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:32px 32px}
.test-chair{height:92%;display:flex;align-items:flex-end;justify-content:center;padding-bottom:10px}
.test-chair svg{height:100%;width:auto;overflow:visible}
.test-chair .seat-g{transform:translateY(var(--sag,0px));transition:transform .25s}
.test-chair .legs-g{transform-origin:150px 262px;transform:scaleX(var(--spl,1));transition:transform .25s}
.test-chair.over svg{animation:shake .25s infinite}
@keyframes shake{25%{transform:translateX(-3px) rotate(-.6deg)}75%{transform:translateX(3px) rotate(.6deg)}}
.seg{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.seg button{background:none;border:2px solid var(--ink);padding:8px 16px;font-weight:700;font-size:15px;text-align:left;transition:.15s}
.seg button small{display:block;font-family:var(--mono);font-weight:400;font-size:11px;opacity:.7}
.seg button:hover{background:#fff}
.seg button[aria-checked="true"]{background:var(--ink);color:var(--bg)}
.meter{height:22px;border:2px solid var(--ink);margin-bottom:12px;position:relative;background:#fff}
.meter i{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--accent);transition:width .25s,background .25s}
.verdict{font-family:var(--disp);font-weight:800;font-size:32px;line-height:1;letter-spacing:-.03em;margin-bottom:6px}
.cap-note{font-family:var(--mono);font-size:13px}

/* Evento */
.event{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
fieldset{border:0}
legend{font-family:var(--mono);font-size:13px;text-transform:uppercase;margin-bottom:10px}
.ev-out{border:2px solid var(--ink);background:#fff;padding:32px;box-shadow:10px 10px 0 var(--accent);transition:box-shadow .4s}
.ev-out .big{font-family:var(--disp);font-weight:800;font-size:clamp(90px,10vw,160px);line-height:.85;letter-spacing:-.05em}
.ev-out .big small{font-size:28px;letter-spacing:-.01em;margin-left:8px;color:var(--accent)}
.ev-out p{margin:10px 0}
.ev-rows{display:grid;grid-template-columns:repeat(3,1fr);border:2px solid var(--ink);margin:16px 0 22px;font-family:var(--mono);font-size:12px;text-transform:uppercase}
.ev-rows div{padding:10px;border-right:2px solid var(--ink)}
.ev-rows div:last-child{border:0}
.ev-rows b{display:block;font-family:var(--disp);font-size:26px;letter-spacing:-.03em;text-transform:none}
.pile-dots{display:flex;flex-wrap:wrap;gap:4px;margin:10px 0 16px}
.pile-dots i{width:16px;height:22px;background:var(--accent);border:2px solid var(--ink);border-radius:5px 5px 2px 2px;transition:background .4s}

/* Cifras */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid var(--ink);margin-top:120px;padding-top:0;max-width:none}
.stat{padding:50px 20px 20px;border-right:2px solid var(--ink)}
.stat:last-child{border:0}
.stat b{display:block;font-family:var(--disp);font-weight:800;font-size:clamp(64px,9vw,150px);line-height:.85;letter-spacing:-.05em;color:var(--accent)}
.stat span{font-family:var(--mono);font-size:13px;text-transform:uppercase}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:60px}
.acc-l details{border-bottom:2px solid var(--ink)}
.acc-l details:first-child{border-top:2px solid var(--ink)}
.acc-l summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:18px 0;font-family:var(--disp);font-weight:700;font-size:22px;letter-spacing:-.02em}
.acc-l summary::-webkit-details-marker{display:none}
.acc-l summary::after{content:"+";font-family:var(--mono);font-size:30px;color:var(--accent);transition:transform .3s}
.acc-l details[open] summary::after{transform:rotate(45deg)}
.acc-l p{padding:0 40px 18px 0;animation:fd .4s}
@keyframes fd{from{opacity:0;transform:translateY(-6px)}}

/* Contacto */
.contact{max-width:none;margin-top:120px;padding:90px 4vw;background:var(--accent);color:var(--on);transition:background .5s,color .4s}
.contact .acc{color:var(--ink)}
.contact-in{display:grid;grid-template-columns:1fr 1fr;gap:60px;max-width:1300px}
.info{list-style:none;display:grid;gap:16px;margin-top:28px;font-family:var(--disp);font-weight:800;font-size:30px;line-height:1;letter-spacing:-.03em}
.info small{display:block;font-family:var(--mono);font-weight:400;font-size:12px;text-transform:uppercase;letter-spacing:0;margin-bottom:4px}
#form{display:grid;gap:16px;align-content:start}
label{display:grid;gap:5px;font-family:var(--mono);font-size:13px;text-transform:uppercase}
#form input,#form textarea{background:var(--bg);color:var(--ink);border:2px solid var(--ink);padding:12px 14px;font-family:var(--sans);font-size:17px;text-transform:none;outline:none;resize:none;width:100%}
#form input:focus,#form textarea:focus{box-shadow:5px 5px 0 var(--ink)}
#form .btn{background:var(--ink);color:var(--bg)}
#form .error{border-color:#fff;box-shadow:0 0 0 3px #000}
.msg{min-height:22px;font-weight:700}

footer{background:var(--ink);color:var(--bg);padding:50px 4vw 24px;overflow:hidden}
.foot-big{font-family:var(--disp);font-weight:800;font-size:clamp(120px,32vw,520px);line-height:.78;letter-spacing:-.06em;color:var(--accent);margin-bottom:24px;transition:color .5s}
.foot-row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px;font-family:var(--mono);font-size:12px;opacity:.85}

/* Remito */
dialog{margin:auto;width:min(480px,94vw);max-height:92vh;background:#fbfbf7;color:var(--ink);border:0;padding:0;box-shadow:0 30px 60px rgba(0,0,0,.4);-webkit-mask:radial-gradient(circle 8px at 8px 0,#0000 98%,#000) -8px 0/16px 100% repeat-x,linear-gradient(#000 0 0);-webkit-mask-composite:source-over}
dialog::backdrop{background:rgba(17,17,18,.7)}
dialog[open]{animation:dg .35s}
@keyframes dg{from{opacity:0;transform:translateY(40px) rotate(-1deg)}}
.remito{position:relative;padding:34px 30px 30px;font-family:var(--mono);display:grid;gap:10px}
.x{position:absolute;top:12px;right:12px;width:34px;height:34px;border:2px solid var(--ink);background:none;font-weight:700}
.x:hover{background:var(--ink);color:#fff}
.r-top{font-weight:700;font-size:15px;padding-right:40px}
.r-date{font-size:12px;opacity:.7}
.r-line{border-top:2px dashed var(--ink)}
.r-item{display:grid;grid-template-columns:30px 1fr auto;gap:2px 10px;padding:8px 0;font-size:13px;align-items:center}
.r-item .sw{width:22px;height:22px;border-radius:50%;border:2px solid var(--ink);grid-row:1/3}
.r-item b{font-family:var(--sans);font-size:15px}
.r-item .pr{font-weight:700;text-align:right}
.r-item small{grid-column:2/4;opacity:.7}
.r-item .qty{grid-column:2;display:inline-flex;gap:8px;align-items:center}
.qty button{width:24px;height:24px;border:2px solid var(--ink);background:none;font-weight:700;line-height:1}
.qty button:hover{background:var(--ink);color:#fff}
.r-empty{padding:20px 0;text-align:center}
.r-tot{display:flex;justify-content:space-between;align-items:baseline}
.r-tot b{font-family:var(--disp);font-weight:800;font-size:40px;letter-spacing:-.04em}
.note{font-size:12px}
a.btn.disabled{opacity:.35;pointer-events:none}
.clear{background:none;border:0;text-decoration:underline;font-family:var(--mono);font-size:12px}
.toast{position:fixed;left:calc(50% + 42px);bottom:24px;transform:translate(-50%,130px);background:var(--ink);color:var(--bg);padding:12px 24px;font-family:var(--mono);font-size:13px;text-transform:uppercase;z-index:100;transition:transform .35s cubic-bezier(.3,1.5,.5,1);white-space:nowrap;border-left:6px solid var(--accent)}
.toast.show{transform:translate(-50%,0)}

.rv{opacity:0;transform:translateY(34px);transition:opacity .7s,transform .7s}
.rv.in{opacity:1;transform:none}

@media(max-width:1100px){
  :root{--rail:0px}
  body{padding-left:0;padding-top:58px}
  .rail{top:0;bottom:auto;left:0;right:0;width:auto;height:58px;flex-direction:row;padding:0 16px}
  .rail nav{display:none}
  .rail-logo{writing-mode:horizontal-tb;transform:none}
  .remito-btn{width:auto;padding:6px 14px}.remito-btn b{display:inline;margin-left:6px}
  .hero,.stacker,.test,.event,.contact-in,.faq-grid{grid-template-columns:1fr}
  .hero{min-height:0}
  .hero-r{min-height:420px}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .toast{left:50%}
  .color-bar{top:58px}
}
@media(max-width:620px){
  .gallery{grid-template-columns:1fr}
  .dot{width:38px;height:38px}
  .st-view{height:460px}
  .specs{grid-template-columns:1fr 1fr 1fr}
}
@media(prefers-reduced-motion:reduce){
  .hero-chair,.mq-in,.test-chair.over svg{animation:none}
  .rv{opacity:1;transform:none;transition:none}
}