/* PRUEBA: "Cómo vendernos / How to sell to us" — scroll-driven 6-step timeline + sell form. */
.sell{--s-bg:#0f1218;--s-panel:#171b24;--s-line:#2c3342;--s-text:#eef1f8;--s-muted:#9aa3b8;--s-accent:#8197ff;--s-green:#3ddc84;
  position:relative;padding:3rem 3.5vw 7rem;color:var(--s-text);overflow:clip;
  background:radial-gradient(1200px 600px at 85% 10%,#26304a55,transparent 60%),linear-gradient(180deg,#12151d 0%,#0d1016 100%)}
.sell:before{content:'';position:absolute;inset:0;pointer-events:none;opacity:.35;
  background:repeating-linear-gradient(90deg,#ffffff05 0 1px,transparent 1px 3px)}
.sell .section-topline{border-top:1px solid #4a5162;padding-top:1rem;color:#aab4c7;position:relative}
.sell .curly-label{color:#8fa4ff}
.sell small{font-weight:inherit}
.sell .en{color:#7f88a0;font:400 13px/1.55 var(--mono);margin-top:.6rem}
.sell-heading{position:relative;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);gap:4vw;align-items:end;margin:7rem 0 4rem}
.sell-heading .curly-label{grid-column:1/-1}
.sell-heading h2{font-size:clamp(54px,8vw,128px);font-weight:850;letter-spacing:-.095em;line-height:.9;margin:0;padding-top:.12em;color:#e9edf5;text-shadow:0 1px 0 #ffffff30,0 18px 40px #0008}
.sell-heading h2 span{color:#8197ff}
.sell-intro p{margin:0;font-size:clamp(16px,1.4vw,20px);line-height:1.45;color:#c3cada;max-width:520px}

/* ---- Track (stacked by default / mobile) ---- */
.sell-track{position:relative}
.sell-rail{display:none}
.sell-steps{display:grid;gap:18px}
.sell-step{display:grid;grid-template-columns:1fr;gap:1.4rem;background:linear-gradient(160deg,#1b2030,#141821);border:1px solid var(--s-line);
  border-radius:18px;padding:1.6rem;box-shadow:inset 0 1px 0 #ffffff12,0 20px 40px #0006}
.sell-copy h3{font-size:clamp(30px,3.1vw,50px);font-weight:850;letter-spacing:-.06em;line-height:.95;margin:.7rem 0 .2rem}
.sell-sub{margin:0 0 1rem;font:500 13px var(--mono);color:var(--s-accent);letter-spacing:.04em;text-transform:uppercase}
.sell-copy>p:not(.sell-sub){margin:0;font-size:16px;line-height:1.55;color:#c9cfdc;max-width:520px}
.sell-num{font:600 11px var(--mono);letter-spacing:.08em;color:#a8b7ff}
.sell-icon{width:58px;height:58px;border-radius:14px;display:grid;place-items:center;color:var(--s-accent);
  background:linear-gradient(145deg,#232a3b,#151925);border:1px solid #39425a;box-shadow:inset 0 1px 0 #ffffff1a}
.sell-icon svg{width:34px;height:34px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.sell-icon .d{stroke-dasharray:140;stroke-dashoffset:140;transition:stroke-dashoffset 1.1s cubic-bezier(.3,.7,.2,1)}
.sell-step.is-on .sell-icon .d{stroke-dashoffset:0}
.sell-step[data-step="5"] .sell-icon{color:var(--s-green)}

.sell-visual{position:relative;min-height:300px;border-radius:14px;overflow:hidden;border:1px solid #2a3141;
  background:radial-gradient(400px 220px at 50% 0%,#ffffff10,transparent 70%),linear-gradient(180deg,#1a1f2b,#10131a);
  display:grid;place-items:center;padding:1.4rem}

/* Step 1: phone camera + form */
.v-apply{grid-template-columns:auto auto;gap:22px;justify-content:center}
.phone{width:120px;height:220px;border-radius:22px;border:2px solid #6c7488;padding:8px;background:#0b0d12;box-shadow:inset 0 0 0 4px #1d2230}
.phone-screen{position:relative;width:100%;height:100%;border-radius:14px;overflow:hidden;background:linear-gradient(160deg,#3c3328,#1d1a17)}
.phone-scrap{position:absolute;inset:30% 12% 25%;border-radius:8px;background:url(./assets/copper.webp) center/cover;filter:saturate(1.1)}
.vf{position:absolute;width:16px;height:16px;border-color:#fff;border-style:solid;border-width:0}
.vf.tl{top:12%;left:9%;border-top-width:2px;border-left-width:2px}.vf.tr{top:12%;right:9%;border-top-width:2px;border-right-width:2px}
.vf.bl{bottom:20%;left:9%;border-bottom-width:2px;border-left-width:2px}.vf.br{bottom:20%;right:9%;border-bottom-width:2px;border-right-width:2px}
.phone-shutter{position:absolute;bottom:5%;left:50%;width:26px;height:26px;margin-left:-13px;border-radius:50%;border:3px solid #fff;background:#ffffff33}
.phone-flash{position:absolute;inset:0;background:#fff;opacity:0}
.apply-form{width:170px;display:grid;gap:9px}
.apply-form i{display:block;height:12px;border-radius:4px;background:#2b3243;position:relative;overflow:hidden}
.apply-form i:after{content:'';position:absolute;inset:0;background:var(--s-accent);transform-origin:left;transform:scaleX(var(--fill,0));transition:transform .4s}
.apply-form i.short{width:60%}
.apply-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:6px}
.apply-thumbs span{aspect-ratio:1;border-radius:6px;background:url(./assets/aluminum.webp) center/cover;opacity:0;transform:scale(.6);transition:.35s cubic-bezier(.3,1.5,.5,1);display:grid;place-items:center;font-size:12px;color:#fff}
.apply-thumbs span:nth-child(2){background-image:url(./assets/copper.webp)}.apply-thumbs span:nth-child(3){background-image:url(./assets/steel.webp)}
.apply-thumbs span.vid{background:#000 url(./assets/electronics.webp) center/cover;text-shadow:0 0 6px #000}
.apply-thumbs span.on{opacity:1;transform:none}

/* Step 2: LME card + stamp */
.v-review{place-items:center}
.lme-card{width:min(100%,360px);background:#0c0f15;border:1px solid #333b4e;border-radius:12px;padding:14px 16px;font:500 11px var(--mono);color:var(--s-muted)}
.lme-top,.lme-bottom{display:flex;justify-content:space-between;align-items:center}
.lme-dot{color:var(--s-green)}
.lme-chart{width:100%;height:auto;margin:10px 0}
.lme-grid{stroke:#232a39;stroke-width:1;fill:none}
.lme-line{fill:none;stroke:var(--s-accent);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:var(--draw,1)}
.lme-bottom b{font:700 22px var(--mono);color:#fff;letter-spacing:-.04em}
.lme-bottom small{color:#6c7488}
.stamp{position:absolute;right:8%;bottom:12%;padding:10px 14px;border:3px solid var(--s-green);color:var(--s-green);border-radius:8px;
  font:800 15px/1.1 var(--sans);letter-spacing:.02em;text-align:center;transform:rotate(-8deg) scale(1.6);opacity:0;transition:.35s cubic-bezier(.3,1.6,.5,1);background:#0f1a14cc}
.stamp small{display:block;font:600 10px var(--mono);margin-top:3px}
.stamp.on{opacity:1;transform:rotate(-8deg) scale(1)}

/* Step 3: container fill */
.v-load{align-content:center;gap:12px}
.load-chips{display:flex;gap:8px;justify-content:center}
.load-chips span{font:600 10px var(--mono);padding:6px 10px;border-radius:99px;border:1px solid #3a4258;color:var(--s-muted)}
.load-chips span.on{background:var(--s-accent);border-color:var(--s-accent);color:#0b0d12}
.container40{position:relative;width:min(100%,520px);aspect-ratio:2.6;border:3px solid #8b94a8;border-radius:6px;padding:8px;
  background:linear-gradient(180deg,#2b3141,#1b2030)}
.c-ribs{position:absolute;inset:0;background:repeating-linear-gradient(90deg,#ffffff0d 0 3px,transparent 3px 18px);pointer-events:none}
.c-pallets{position:relative;height:100%;display:grid;grid-template-columns:repeat(5,1fr);grid-template-rows:1fr 1fr;gap:6px}
.c-pallets span{border-radius:4px;display:grid;place-content:center;text-align:center;font:700 13px var(--sans);color:#0b0d12;
  background:linear-gradient(180deg,#d39a62,#a96a36);box-shadow:inset 0 -6px 0 #6b4a2c;opacity:0;transform:translateX(-30px);transition:.35s cubic-bezier(.3,1.2,.5,1)}
.c-pallets span small{display:block;font:600 9px var(--mono);opacity:.75}
.c-pallets span:nth-child(2),.c-pallets span:nth-child(6),.c-pallets span:nth-child(10){background:linear-gradient(180deg,#e2e6ee,#9aa3b4);box-shadow:inset 0 -6px 0 #6c7486}
.c-pallets span:nth-child(4),.c-pallets span:nth-child(8){background:linear-gradient(180deg,#8d939f,#5c626e);box-shadow:inset 0 -6px 0 #3d424c;color:#fff}
.c-pallets span:nth-child(5),.c-pallets span:nth-child(9){background:linear-gradient(180deg,#5fd18f,#2f9a5b);box-shadow:inset 0 -6px 0 #1f6b3e}
.c-pallets span.on{opacity:1;transform:none}
.load-cams{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;width:min(100%,520px)}
.load-cams span{font:600 10px var(--mono);text-align:center;padding:5px 0;border-radius:6px;color:#0b0d12;background:#fff;opacity:.08;transform:scale(.8);transition:.3s}
.load-cams span.on{opacity:1;transform:none;animation:sellFlash .6s}
@keyframes sellFlash{0%{box-shadow:0 0 0 0 #fffc}100%{box-shadow:0 0 0 14px #fff0}}
.load-meta{display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:space-between;width:min(100%,520px);font:500 10px var(--mono);color:var(--s-muted)}
.load-meta b{color:#fff;font-size:14px}

/* Step 4: checklist */
.v-close{grid-template-columns:1fr;gap:14px;align-content:center;justify-items:stretch}
.v-close .seal-tag{justify-self:end;width:auto;padding:8px 14px}
.checklist{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.checklist li{display:flex;gap:12px;align-items:center;padding:10px 12px;border-radius:10px;border:1px solid #2c3445;background:#ffffff05;transition:.3s}
.checklist li i{flex:none;width:24px;height:24px;border-radius:6px;border:2px solid #555f76;position:relative;transition:.3s}
.checklist li i:after{content:'';position:absolute;left:6px;top:2px;width:7px;height:12px;border:solid #0b0d12;border-width:0 3px 3px 0;transform:rotate(45deg) scale(0);transition:.25s cubic-bezier(.3,1.8,.5,1)}
.checklist li span{font:600 15px/1.2 var(--sans)}.checklist li small{display:block;font:400 11px var(--mono);color:#7f88a0;margin-top:2px}
.checklist li.on{border-color:#2f6b4a;background:#3ddc8412}
.checklist li.on i{background:var(--s-green);border-color:var(--s-green)}
.checklist li.on i:after{transform:rotate(45deg) scale(1)}
.seal-tag{width:110px;padding:14px 10px;border-radius:10px;text-align:center;background:linear-gradient(180deg,#f1c94b,#c9951c);color:#2a1d00;
  font:600 10px var(--mono);transform:rotate(6deg) translateY(10px);opacity:.15;transition:.4s cubic-bezier(.3,1.5,.5,1)}
.seal-tag b{display:block;font:800 13px var(--mono);margin-top:4px}
.seal-tag.on{opacity:1;transform:rotate(-4deg)}

/* Step 5: scale */
.v-scale{grid-template-columns:1fr;gap:14px;justify-items:center;align-content:center}
.scale-box{position:relative;width:240px;height:170px}
.scale-load{position:absolute;left:15px;right:15px;bottom:46px;height:70px;border-radius:4px;border:3px solid #8b94a8;
  background:repeating-linear-gradient(90deg,#3a4155 0 4px,#2b3141 4px 16px);transform:translateY(calc(var(--drop,1) * -120px));opacity:calc(1 - var(--drop,1) * .7)}
.scale-plate{position:absolute;left:0;right:0;bottom:30px;height:16px;border-radius:4px;background:linear-gradient(180deg,#c7cdd8,#7d8596)}
.scale-base{position:absolute;left:30px;right:30px;bottom:0;height:30px;border-radius:0 0 8px 8px;background:#2a3040;border:1px solid #444c60}
.scale-display{min-width:210px;padding:16px;border-radius:10px;background:#07090c;border:1px solid #333b4e;font:500 10px var(--mono);color:var(--s-muted)}
.scale-display b{display:block;font:700 34px var(--mono);letter-spacing:-.04em;color:#7dffb0;text-shadow:0 0 14px #3ddc8466;margin:6px 0}
.scale-display em{display:block;font-style:normal;color:var(--s-green);opacity:0;transform:translateY(6px);transition:.3s}
.scale-display em.on{opacity:1;transform:none}

/* Step 6: pay */
.v-pay{gap:14px}
.pay-check{width:150px;height:150px}
.pc-ring,.pc-tick{fill:none;stroke:var(--s-green);stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1}
.pc-ring{stroke-width:6;stroke-dashoffset:var(--ring,1);transform:rotate(-90deg);transform-origin:center}
.pc-tick{stroke-width:9;stroke-dashoffset:var(--tick,1)}
.v-pay.done .pay-check{filter:drop-shadow(0 0 22px #3ddc8488)}
.pay-text{text-align:center}.pay-text b{display:block;font:850 28px var(--sans);letter-spacing:-.04em}
.pay-text span{font:600 12px var(--mono);color:var(--s-green)}

/* ---- Desktop pinned timeline ---- */
@media(min-width:901px){
  .sell.sell-pinned .sell-track{height:100vh;display:grid;grid-template-columns:minmax(230px,.48fr) minmax(0,1.7fr);gap:3vw;align-items:center}
  .sell.sell-pinned .sell-rail{display:block;position:relative;padding-left:28px}
  .sell-rail-line{position:absolute;left:9px;top:12px;bottom:12px;width:2px;background:#2c3342}
  .sell-rail-line i{position:absolute;left:0;top:0;width:100%;height:100%;background:linear-gradient(180deg,var(--s-accent),var(--s-green));transform-origin:top;transform:scaleY(0)}
  .sell-rail ol{list-style:none;margin:0;padding:0;display:grid;gap:min(3.2vh,26px)}
  .sell-rail button{all:unset;cursor:pointer;display:flex;gap:16px;align-items:baseline;color:#5d667c;transition:color .3s}
  .sell-rail button:focus-visible{outline:2px solid var(--s-accent);outline-offset:6px}
  .sell-rail button:before{content:'';position:absolute;left:3px;width:14px;height:14px;border-radius:50%;background:#0f1218;border:2px solid #3a4258;margin-top:4px;transition:.3s}
  .sell-rail li{position:relative}
  .sell-rail li button:before{left:-25px}
  .sell-rail b{font:600 12px var(--mono)}
  .sell-rail span{font:750 clamp(17px,1.5vw,22px)/1.15 var(--sans);letter-spacing:-.03em}
  .sell-rail small{display:block;font:400 11px var(--mono);letter-spacing:0;color:#59627a;margin-top:3px}
  .sell-rail li.done button{color:#a7b0c4}.sell-rail li.done button:before{background:var(--s-accent);border-color:var(--s-accent)}
  .sell-rail li.current button{color:#fff}.sell-rail li.current button:before{background:#fff;border-color:var(--s-accent);box-shadow:0 0 0 6px #8197ff33}
  .sell-rail li[data-rail="5"].current button:before,.sell-rail li[data-rail="5"].done button:before{border-color:var(--s-green);box-shadow:0 0 0 6px #3ddc8433}
  .sell.sell-pinned .sell-steps{position:relative;height:min(78vh,640px);display:block}
  .sell.sell-pinned .sell-step{position:absolute;inset:0;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);align-items:center;gap:2.2rem;padding:2.2rem;
    opacity:0;visibility:hidden;transform:translateY(40px) scale(.98);transition:opacity .45s,transform .55s cubic-bezier(.2,.7,.2,1),visibility 0s .45s}
  .sell.sell-pinned .sell-step.is-current{opacity:1;visibility:visible;transform:none;transition:opacity .45s,transform .55s cubic-bezier(.2,.7,.2,1)}
  .sell.sell-pinned .sell-step.is-past{transform:translateY(-40px) scale(.98)}
  .sell.sell-pinned .sell-visual{height:100%;min-height:0}
  .sell:not(.sell-pinned) .sell-step{grid-template-columns:1fr 1.1fr;align-items:center}
}

/* ---- CTA ---- */
.sell-cta{position:relative;display:flex;flex-wrap:wrap;gap:2rem;align-items:center;justify-content:space-between;margin-top:5rem;padding:2.4rem;border-radius:18px;
  background:linear-gradient(120deg,#1d2440,#141a2c 60%,#10261c);border:1px solid #34406a}
.sell-cta p{margin:0;font:850 clamp(28px,3.2vw,48px)/1 var(--sans);letter-spacing:-.05em}
.sell-cta p span{display:block;font:400 13px var(--mono);letter-spacing:0;color:#8f98b0;margin-top:.6rem}
.sell-cta-btn{display:inline-flex;align-items:center;gap:.8rem;padding:1.3rem 2.2rem;border-radius:99px;background:linear-gradient(180deg,#6f86ff,#3f5bff);color:#fff;
  font:800 clamp(18px,1.6vw,24px) var(--sans);letter-spacing:-.02em;box-shadow:0 10px 30px #3f5bff66,inset 0 1px 0 #ffffff55;transition:transform .2s,box-shadow .2s}
.sell-cta-btn small{font:500 12px var(--mono);opacity:.8}
.sell-cta-btn:hover{transform:translateY(-2px);box-shadow:0 16px 40px #3f5bff88,inset 0 1px 0 #ffffff55}
.sell-cta-btn span{font-size:1.3em}

/* ---- Form ---- */
.sell-apply{position:relative;display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:4vw;margin-top:5rem;scroll-margin-top:30px}
.sell-apply-head h3{font-size:clamp(40px,5vw,80px);font-weight:850;letter-spacing:-.08em;line-height:.88;margin:1.2rem 0}
.sell-apply-head h3 span{color:var(--s-accent)}
.sell-apply-head p{color:#c3cada;line-height:1.5;margin:0}.sell-apply-head p small{color:#7f88a0;font:400 12px var(--mono)}
.sell-form{display:grid;gap:1.1rem;padding:2rem;border-radius:18px;background:#141821;border:1px solid var(--s-line)}
.sell-form.flash{animation:sellFormFlash 1.2s}
@keyframes sellFormFlash{0%{box-shadow:0 0 0 0 #8197ffaa}100%{box-shadow:0 0 0 22px #8197ff00}}
.sf-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.sf-field{display:grid;gap:.45rem}
.sf-field>span,.sf-load legend,.sf-media-label{font:600 11px var(--mono);text-transform:uppercase;letter-spacing:.04em;color:#aab3c8}
.sf-field small,.sf-load legend small,.sf-media-label small{color:#6f7891;text-transform:none;font-weight:400}
.sell-form input:not([type=radio]):not([type=file]),.sell-form select,.sell-form textarea{width:100%;color:#fff;background:#0d1016;border:1px solid #3a4258;border-radius:10px;padding:14px 15px;outline:none;font-size:16px}
.sell-form input::placeholder,.sell-form textarea::placeholder{color:#5f6880}
.sell-form input:focus,.sell-form select:focus,.sell-form textarea:focus{border-color:var(--s-accent);box-shadow:0 0 0 3px #8197ff33}
.sell-form .invalid{border-color:#e06464!important}
.sf-load{border:0;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px}
.sf-load legend{margin-bottom:.5rem;width:100%}
.sf-load label{flex:1 1 200px;cursor:pointer}
.sf-load input{position:absolute;opacity:0;pointer-events:none}
.sf-load label span{display:block;padding:14px 16px;border-radius:10px;border:1px solid #3a4258;background:#0d1016;font-weight:700}
.sf-load label span small{display:block;font:400 11px var(--mono);color:#7f88a0;margin-top:2px}
.sf-load input:checked+span{border-color:var(--s-accent);background:#8197ff1f;box-shadow:inset 0 0 0 1px var(--s-accent)}
.sf-load input:focus-visible+span{outline:2px solid var(--s-accent);outline-offset:3px}
.sf-load.invalid label span{border-color:#e06464}
.sf-media{display:grid;gap:.7rem}
.sf-media-buttons{display:flex;flex-wrap:wrap;gap:10px}
.sf-btn{display:inline-flex;align-items:center;gap:.5rem;padding:13px 18px;border-radius:99px;cursor:pointer;font-weight:750;background:#eef1f8;color:#0b0d12}
.sf-btn small{font:400 11px var(--mono);opacity:.7}
.sf-btn.ghost{background:transparent;color:#fff;border:1px solid #4a5370}
.sf-btn:focus-within{outline:2px solid var(--s-accent);outline-offset:3px}
.sf-previews{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:10px}
.sf-previews li{position:relative;aspect-ratio:1;border-radius:10px;overflow:hidden;background:#0d1016;border:1px solid #333b4e;animation:sellPop .35s cubic-bezier(.3,1.5,.5,1)}
@keyframes sellPop{from{transform:scale(.6);opacity:0}}
.sf-previews img,.sf-previews video{width:100%;height:100%;object-fit:cover;display:block}
.sf-previews .meta{position:absolute;left:0;right:0;bottom:0;padding:4px 6px;font:500 9px var(--mono);background:linear-gradient(transparent,#000c);color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sf-previews .kind{position:absolute;left:6px;top:6px;font:700 9px var(--mono);padding:2px 5px;border-radius:4px;background:#000a;color:#fff}
.sf-previews button{position:absolute;right:5px;top:5px;width:24px;height:24px;border-radius:50%;border:0;background:#000b;color:#fff;font-size:14px;line-height:1}
.sf-previews li.up:after{content:'';position:absolute;left:0;bottom:0;height:3px;width:var(--p,0%);background:var(--s-green);transition:width .2s}
.sf-turnstile{min-height:65px}
.sf-submit{justify-self:start;display:inline-flex;align-items:center;gap:.6rem;padding:1.1rem 2rem;border-radius:99px;border:0;font-weight:800;font-size:18px;color:#fff;
  background:linear-gradient(180deg,#6f86ff,#3f5bff);box-shadow:0 10px 26px #3f5bff55}
.sf-submit small{font:400 12px var(--mono);opacity:.8}
.sf-submit[disabled]{opacity:.55;cursor:progress}
.sf-progress{height:6px;border-radius:9px;background:#262d3d;overflow:hidden}.sf-progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--s-accent),var(--s-green));transition:width .2s}
.sf-status{margin:0;min-height:1.4em;font:500 13px/1.5 var(--mono);color:#c3cada}
.sf-status.err{color:#ff8c8c}.sf-status.ok{color:var(--s-green)}

/* Gentle idle motion */
.phone-shutter{animation:sellPulse 2.4s infinite}
@keyframes sellPulse{50%{box-shadow:0 0 0 6px #ffffff22}}
.lme-dot{animation:sellBlink 1.6s infinite}@keyframes sellBlink{50%{opacity:.3}}
@media(prefers-reduced-motion:reduce){.phone-shutter,.lme-dot{animation:none}}

@media(max-width:900px){
  .sell{padding:2rem 20px 5rem}
  .sell-heading{grid-template-columns:1fr;margin:5rem 0 2.5rem;gap:1.2rem}
  .sell-apply{grid-template-columns:1fr;gap:1.6rem}
  .sf-grid{grid-template-columns:1fr}
  .sell-form{padding:1.2rem}
  .sell-visual{min-height:250px;padding:1rem}
  .v-apply,.v-scale,.v-close{grid-template-columns:1fr;justify-items:center}
  .v-close .checklist{width:100%}
  .c-pallets span{font-size:10px}.c-pallets span small{font-size:7px}
  .sell-cta{padding:1.6rem;margin-top:3rem}.sell-cta-btn{width:100%;justify-content:center}
  .sell-step{padding:1.2rem}
}

/* Desktop getUserMedia camera preview */
.sf-cam-overlay{position:fixed;inset:0;z-index:9999;background:#000c;display:grid;place-items:center;padding:20px;backdrop-filter:blur(4px)}
.sf-cam-modal{width:min(520px,100%);background:#12151c;border:1px solid #3a4258;border-radius:18px;padding:14px;display:grid;gap:12px;box-shadow:0 24px 60px #000a}
.sf-cam-modal video{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;background:#000;transform:scaleX(-1)}
.sf-cam-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}
.sf-cam-err{margin:0;color:#ff8c8c;font:500 13px var(--mono)}