/* ═══════════════════════════════════════════════════════
   HeavyDeals — sections.css (additive)
   Section 01 · The problem
   Section 04 · The stack (3 layers)
   Loaded AFTER style.css. Uses existing tokens only.
   ═══════════════════════════════════════════════════════ */

/* ── THE PROBLEM (01) ── */
.prob{background:var(--ice);padding:clamp(72px,8vw,96px) 36px}
.prob-inner{max-width:var(--container);margin:0 auto}

.prob h2{color:var(--teal-deep);max-width:26ch;margin-bottom:2rem;font-size:clamp(2rem,3.5vw,2.4rem)}
.prob-h-light{font-weight:400;color:rgba(31,69,79,.65);display:block;margin-bottom:4px}
.prob-h-strong{font-weight:600;color:var(--teal-deep);display:block}
.hl-lime{position:relative;display:inline-block;white-space:nowrap;z-index:1}
.hl-lime::after{
  content:"";position:absolute;left:-4px;right:-8px;bottom:12%;height:35%;
  background:var(--lime);z-index:-1;border-radius:4px;opacity:0.9;transform:rotate(-1deg);
}

.prob-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:1.5rem}

.prob-card{
  background:#FFFFFF;border-radius:var(--r-card);padding:20px 24px;
  border:1px solid rgba(31,69,79,0.08);
  box-shadow:0 4px 24px -12px rgba(31,69,79,0.05);
  transition:border-color .3s, box-shadow .3s;
  display:flex;flex-direction:column;gap:1.25rem;
}
.prob-text{flex:none}
.prob-card:hover{
  border-color:rgba(31,69,79,0.25);
  box-shadow:0 8px 32px -12px rgba(31,69,79,0.1);
}

.prob-title{color:var(--teal-deep);font-size:1.35rem;font-weight:600;margin-bottom:.6rem;line-height:1.25;letter-spacing:-.02em}
.prob-desc{color:rgba(31,69,79,.8);font-size:1.02rem;line-height:1.5}

/* Link */
.prob-link{text-align:center;margin-top:2.5rem}
.prob-link a{color:rgba(31,69,79,.6);font-size:.85rem;letter-spacing:.05em;text-transform:uppercase;transition:color .3s}
.prob-link a:hover{color:var(--teal-deep)}

/* ── Artifacts ── */
.art-box{background:#F7FAFC;border:1px solid rgba(31,69,79,.08);border-radius:8px;padding:12px 14px;flex:none;width:100%}

/* Art 1: Price List */
.art-1{display:flex;flex-direction:column;gap:8px;font-family:var(--mono);font-size:.75rem;color:var(--teal-deep)}
.art-1-head{display:flex;justify-content:space-between;color:rgba(31,69,79,.6)}
.art-1-badge{color:#9C4848;background:rgba(156,72,72,.1);padding:2px 6px;border-radius:4px;font-size:.65rem;font-weight:500}
.art-1-row{display:flex;align-items:center;gap:12px;font-size:1.05rem}
.art-1-old{color:rgba(31,69,79,.4);position:relative}
.art-1-new{color:var(--teal-deep);font-weight:600;position:relative}
.art-1-new::before{content:"";position:absolute;inset:-4px -8px;background:var(--lime);border-radius:4px;z-index:0;animation:priceFlash 4s infinite}
.art-1-new span{position:relative;z-index:1}
.art-1-old::after{content:"";position:absolute;left:0;top:50%;width:100%;height:1.5px;background:var(--teal-deep);transform-origin:left;animation:strike 4s infinite}
@keyframes priceFlash{
  0%, 15%{opacity:0;transform:scale(0.95)}
  20%, 30%{opacity:1;transform:scale(1)}
  40%, 100%{opacity:0;transform:scale(1)}
}
@keyframes strike{
  0%, 15%{transform:scaleX(0)}
  20%, 100%{transform:scaleX(1)}
}

/* Art 2: Email Stack */
.art-2{position:relative;height:120px;width:100%;display:flex;align-items:center;justify-content:center}
.art-msg{
  height:78px;box-sizing:border-box;background:#FFFFFF;
  border:1px solid rgba(31,69,79,.14);border-left:3px solid var(--teal);border-radius:8px;
  padding:9px 14px;display:flex;flex-direction:column;justify-content:center;gap:3px;
  box-shadow:0 6px 16px -8px rgba(31,69,79,.18);
  position:absolute;left:0;right:0;
  opacity:0;visibility:hidden;
  transform:translateY(12px);
  transition:all .5s cubic-bezier(.32,.72,0,1);
}
.art-msg.msg-active{
  opacity:1;visibility:visible;transform:translateY(0);
}
.art-msg.from-sales{border-left-color:var(--teal)}
.art-msg.from-sales .from{color:var(--teal)}
.art-msg.from-ops{border-left-color:var(--bluegray)}
.art-msg.from-ops .from{color:var(--bluegray)}
.art-msg.from-pricing{border-left-color:#9C4848}
.art-msg.from-pricing .from{color:#9C4848}
.art-msg .from{color:var(--teal);font-size:.6rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;font-family:var(--mono)}
.art-msg .body{color:var(--teal-deep);font-weight:500;font-size:.82rem}

/* Art 3: Spreadsheet */
.art-3{position:relative;display:flex;align-items:center;justify-content:center}
.art-sheet{display:grid;grid-template-columns:2fr 1fr 1fr;gap:1px;background:rgba(31,69,79,.1);border:1px solid rgba(31,69,79,.1);border-radius:4px;overflow:hidden;font-family:var(--mono);font-size:.7rem;width:100%}
.art-cell{background:#FFFFFF;padding:6px 8px;color:var(--teal-deep);white-space:nowrap}
.art-cell.th{background:#F0F4F7;color:rgba(31,69,79,.6);font-size:.6rem;text-transform:uppercase;font-weight:500}
.art-cell.err{font-weight:600}
.err-row{animation:rowHighlight 4s infinite}
.art-cell.err{animation:errBlink 4s infinite}
@keyframes rowHighlight{
  0%, 10%, 100%{background:#FFFFFF}
  15%, 80%{background:#F7FAFC}
}
@keyframes errBlink{
  0%, 10%, 100%{background:#FFFFFF;color:var(--teal-deep)}
  15%, 80%{background:rgba(156,72,72,.1);color:#9C4848}
}

@media (max-width:900px){
  .prob-grid{grid-template-columns:1fr;gap:1.5rem}
}
@media (max-width:640px){
  .prob{padding:clamp(50px,8vw,80px) 20px}
  .prob-card{padding:20px 24px}
  .prob-title{font-size:1.2rem}
  .prob-desc{font-size:.95rem}
}
@media (prefers-reduced-motion:reduce){
  .art-1-new::before, .art-1-old::after, .err-row, .art-cell.err{animation:none !important}
  .art-1-old{text-decoration:line-through}
  .art-1-new{opacity:1}
  .art-cell.err{background:rgba(156,72,72,.1);color:#9C4848}
}

/* ── THE STACK (04) ── */

.layers{background:var(--teal);padding:clamp(60px,7vw,90px) 36px;position:relative;overflow:hidden}
.layers-in{max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:1fr minmax(auto, 540px);gap:clamp(40px,5vw,72px);align-items:center}

.layers-copy .eyebrow{color:var(--lime);margin-bottom:1.1rem;display:block}
.layers-copy h2{max-width:16ch}
.layers-copy .lead{margin-top:1.2rem;font-size:1.12rem;line-height:1.62;color:var(--bluegray);max-width:44ch}
.layers-copy .lead b{color:var(--ice)}
.layers-points{margin-top:2rem;display:flex;flex-direction:column;gap:.9rem;list-style:none}
.layers-points li{display:flex;gap:.7rem;align-items:baseline;font-size:1rem;color:var(--bluegray)}
.layers-points li::before{content:"→";color:var(--lime);font-family:var(--mono);font-size:.8rem}

/* ── The stack visual ── */
.stack{position:relative;perspective:1300px;width:100%;max-width:540px}
.layer-card{position:relative;border-radius:14px;padding:20px 24px;
  border:1px solid var(--line-2);
  background:linear-gradient(168deg,rgba(229,236,240,.07),rgba(229,236,240,.02));
  box-shadow:0 30px 70px -30px rgba(0,0,0,.65), inset 0 1px 0 rgba(229,236,240,.08);
  transform:rotateX(8deg);transform-origin:center top;
  transition:transform .45s cubic-bezier(.22,.61,.36,1),border-color .3s,box-shadow .3s}
.layer-card + .layer-card{margin-top:-10px}
.layer-card:nth-child(1){z-index:3}
.layer-card:nth-child(2){z-index:2;transform:rotateX(8deg) scale(.975);opacity:.96}
.layer-card:nth-child(3){z-index:1;transform:rotateX(8deg) scale(.95);opacity:.92}
.layer-card:hover{transform:rotateX(4deg) translateY(-4px)}

.layer-card.hd{border-color:rgba(222,254,82,.45);
  background:linear-gradient(168deg,rgba(222,254,82,.10),rgba(222,254,82,.02));
  box-shadow:0 34px 80px -30px rgba(0,0,0,.7), 0 0 40px -18px rgba(222,254,82,.35),
    inset 0 1px 0 rgba(229,236,240,.12)}

.layer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.layer-tag{font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--bluegray)}
.layer-card.hd .layer-tag{color:var(--lime)}
.layer-title{color:var(--ice);font-weight:600;font-size:1.28rem;letter-spacing:-.02em;line-height:1.2}
.layer-desc{font-size:.96rem;line-height:1.45;color:var(--bluegray);max-width:52ch;margin-top:4px}
.layer-chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.layer-chip{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--bluegray);border:1px solid var(--line-2);border-radius:6px;padding:4px 8px;background:rgba(0,0,0,.15)}
.layer-card.hd .layer-chip{color:var(--ice);border-color:rgba(222,254,82,.35)}

/* connector between cards */
.stack-link{position:relative;height:20px;z-index:4;display:flex;justify-content:center;pointer-events:none}
.stack-link::before{content:"";width:1px;height:100%;
  background:repeating-linear-gradient(180deg,var(--lime) 0 4px,transparent 4px 9px);opacity:.55;
  animation:linkFlow 1.6s linear infinite}
@keyframes linkFlow{to{transform:translateY(9px)}}
.stack-link span{position:absolute;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:.52rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);background:var(--teal);padding:1px 6px;border:1px solid var(--line);border-radius:99px}

@media (max-width:1024px){
  .layers-in{grid-template-columns:1fr;gap:44px}
  .stack{max-width:540px}
}
@media (max-width:640px){
  .layers{padding-left:20px;padding-right:20px}
  .layer-card,.layer-card:nth-child(2),.layer-card:nth-child(3){transform:none;opacity:1}
  .layer-card:hover{transform:none}
  /* cap type sizes one step below desktop on mobile */
  .layer-title{font-size:1.15rem}
  .layer-desc{font-size:.9rem}
  .layer-chip{font-size:.65rem;padding:4px 6px}
  .layers-copy .lead{font-size:1rem}
  .layers-points li{font-size:.93rem}
}
@media (prefers-reduced-motion:reduce){
  .stack-link::before{animation:none}
  .layer-card,.layer-card:hover{transition:none}
}
/* ══ Sección 01 · The shift (aditivo, va en sections.css) ══ */
/* ── SHIFT ── */
.shift{background:var(--teal-deep);padding:clamp(64px,8vw,104px) 36px;position:relative;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.shift-in{max-width:var(--container);margin:0 auto}
.shift-head{max-width:800px;margin-bottom:clamp(32px,4vw,48px)}
.shift-eyebrow{color:var(--lime);margin-bottom:1.1rem;display:block}
.shift-h2{color:var(--ice);font-weight:600;letter-spacing:-.03em;line-height:1.06;
  font-size:clamp(1.8rem,3vw,2.6rem);max-width:none}
.shift-h2 .lm{color:var(--lime);font-family:var(--mono);font-size:0.9em;letter-spacing:0}
.shift-lead{margin-top:1.1rem;font-size:1.08rem;line-height:1.6;color:var(--bluegray);max-width:52ch}

.shift-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.shift-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:22px 24px 24px;overflow:hidden;transition:border-color .3s,background .3s}
.shift-card:hover{border-color:var(--line-2);background:rgba(229,236,240,.06)}
.shift-num{font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;color:var(--muted)}
.shift-verb{color:var(--ice);font-weight:600;font-size:1.5rem;letter-spacing:-.02em;margin:14px 0 6px;
  display:flex;align-items:center;gap:10px}
.shift-verb .dot{width:8px;height:8px;border-radius:2px;background:var(--lime);box-shadow:0 0 10px var(--lime)}
.shift-fromto{display:flex;align-items:center;gap:10px;margin:4px 0 16px;flex-wrap:wrap}
.chip{font-family:var(--mono);font-size:.64rem;letter-spacing:.04em;padding:5px 10px;border-radius:6px;
  border:1px solid var(--line-2);color:var(--muted);background:rgba(0,0,0,.15)}
.chip.to{color:var(--teal-deep);background:var(--lime);border-color:var(--lime);font-weight:600}
.arrow{color:var(--muted);font-family:var(--mono);font-size:.8rem}
.shift-desc{font-size:.97rem;line-height:1.6;color:var(--bluegray)}
.shift-desc b{color:var(--ice);font-weight:600}

/* mini visual per card */
.viz{height:60px;margin-bottom:6px;position:relative}
/* Structure: scattered blocks slide into grid smoothly */
.viz-structure svg .b{animation:structB 5.5s cubic-bezier(.4,0,.2,1) infinite;transform-origin:center}
.viz-structure svg .g{opacity:0;animation:structG 5.5s cubic-bezier(.4,0,.2,1) infinite;transform-origin:center}
.viz-structure svg .b:nth-of-type(1){animation-delay:0s}
.viz-structure svg .b:nth-of-type(2){animation-delay:0.05s}
.viz-structure svg .b:nth-of-type(3){animation-delay:0.1s}
.viz-structure svg .b:nth-of-type(4){animation-delay:0.15s}
.viz-structure svg .g:nth-of-type(1){animation-delay:0s}
.viz-structure svg .g:nth-of-type(2){animation-delay:0.1s}
@keyframes structB{
  0%,18%{opacity:1;transform:translateX(0)}
  35%,100%{opacity:0;transform:translateX(15px)}
}
@keyframes structG{
  0%,28%{opacity:0;transform:translateX(-15px)}
  45%,88%{opacity:1;transform:translateX(0)}
  96%,100%{opacity:0;transform:translateX(8px)}
}
/* Automate: token flows, path pulses */
.viz-automate line{animation:pathFlow 8s linear infinite}
.viz-automate .dest-node{transform-origin:180px 30px;animation:destPulse 5.2s ease-out infinite}
.viz-automate .mover{animation:tokenMove 5.2s cubic-bezier(.5,0,.2,1) infinite}
@keyframes pathFlow{to{stroke-dashoffset:-100}}
@keyframes destPulse{
  0%,42%{transform:scale(1)}
  45%{transform:scale(1.8)}
  55%,100%{transform:scale(1)}
}
@keyframes tokenMove{
  0%,10%{transform:translateX(0) scale(1);opacity:1}
  45%{transform:translateX(160px) scale(1);opacity:1}
  50%,85%{transform:translateX(160px) scale(0);opacity:0}
  95%,100%{transform:translateX(0) scale(0);opacity:0}
}
/* Trace: rows get a tick with pop effect */
.viz-trace rect{animation:traceRowHi 4.8s ease infinite}
.viz-trace .tick{opacity:0;transform-origin:center;animation:tickPop 4.8s cubic-bezier(.34,1.56,.64,1) infinite}
.viz-trace rect:nth-of-type(1),.viz-trace .tick:nth-of-type(1){animation-delay:0.2s}
.viz-trace rect:nth-of-type(2),.viz-trace .tick:nth-of-type(2){animation-delay:0.7s}
.viz-trace rect:nth-of-type(3),.viz-trace .tick:nth-of-type(3){animation-delay:1.2s}
@keyframes traceRowHi{
  0%,15%{fill:rgba(122,156,166,.18)}
  25%,70%{fill:rgba(222,254,82,.15)}
  85%,100%{fill:rgba(122,156,166,.18)}
}
@keyframes tickPop{
  0%,15%{opacity:0;transform:scale(0)}
  25%,75%{opacity:1;transform:scale(1)}
  85%,100%{opacity:0;transform:scale(0)}
}

@media (max-width:900px){.shift-grid{grid-template-columns:1fr;gap:14px}}
@media (max-width:640px){
  .shift{padding-left:20px;padding-right:20px}
  .shift-h2{font-size:clamp(1.7rem,5vw,2rem)}
  .shift-verb{font-size:1.3rem}
}
@media (prefers-reduced-motion:reduce){.viz *{animation:none!important;opacity:1!important}}

/* ══ Sección · Two sides, one system ══ */
.sides{background:var(--ice);padding:clamp(40px,5vw,72px) 36px;
  border-top:1px solid rgba(31,69,79,.08);border-bottom:1px solid rgba(31,69,79,.08)}
.sides-in{max-width:var(--container);margin:0 auto}

/* Head */
.sides-head{margin-bottom:clamp(32px,4vw,40px);max-width:52ch}
.sides-eyebrow{display:block;margin-bottom:.8rem;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-deep)}
.sides-h2{color:var(--teal-deep);font-weight:700;letter-spacing:-.03em;line-height:1.06;
  font-size:clamp(2rem,3.5vw,3rem);margin-bottom:.7rem}
.sides-lm{font-family:var(--mono);font-size:.88em;letter-spacing:0;color:var(--teal-deep);
  font-weight:800;border-bottom:3px solid var(--lime);padding-bottom:1px}
.sides-lead{font-size:1.08rem;line-height:1.5;color:rgba(31,69,79,.85)}

/* Body layout: col + bridge + col */
.sides-body{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:0}

/* Panels */
.sides-col{padding:4px}
.sides-panel{background:#FFFFFF;border:1px solid rgba(31,69,79,.1);border-radius:12px;
  padding:20px 24px;box-shadow:0 4px 28px -12px rgba(31,69,79,.08);
  transition:border-color .3s,box-shadow .3s}
.sides-col--you .sides-panel:hover{border-color:rgba(31,69,79,.2);box-shadow:0 8px 40px -16px rgba(31,69,79,.14)}
.sides-col--customer .sides-panel:hover{border-color:rgba(222,254,82,.5);box-shadow:0 8px 40px -16px rgba(222,254,82,.18)}

/* Role header */
.sides-role{display:flex;align-items:center;gap:10px;margin-bottom:0}
.sides-role-chip{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;
  padding:4px 10px;border-radius:6px;font-weight:700;
  color:var(--teal-deep);background:rgba(31,69,79,.08);border:1px solid rgba(31,69,79,.14)}
.sides-role-chip--customer{color:var(--teal-deep);background:rgba(222,254,82,.2);border-color:rgba(222,254,82,.6)}
.sides-role-label{font-size:.85rem;color:rgba(31,69,79,.75);font-family:var(--mono);font-weight:500}

/* Mini UI Panels */
.sides-panel-top{margin-bottom:16px}
.sides-desc{font-size:.9rem;line-height:1.45;color:var(--teal-deep);margin-top:10px;max-width:34ch}
.sides-ui{background:#F7FAFC;border:1px solid rgba(31,69,79,.08);border-radius:8px;
  overflow:hidden;display:flex;flex-direction:column;font-family:var(--mono);font-size:.75rem;
  color:var(--teal-deep)}
.s-ui-header{display:flex;justify-content:space-between;align-items:center;
  padding:10px 12px;background:#FFFFFF;border-bottom:1px solid rgba(31,69,79,.08)}
.s-ui-title{font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:rgba(31,69,79,.85);font-size:.65rem}
.s-ui-metrics{display:flex;gap:12px}
.s-ui-metric{color:rgba(31,69,79,.85);font-size:.7rem}
.s-ui-metric b{color:var(--teal-deep);font-weight:700}
.s-ui-user{color:var(--teal-deep);font-weight:700;font-size:.7rem}
.s-ui-body{padding:10px 12px;display:flex;flex-direction:column;gap:6px}

/* Distributor UI */
.s-ui-row{display:grid;grid-template-columns:2fr 1fr 1fr;gap:6px;align-items:center;
  background:#FFFFFF;padding:6px 8px;border-radius:6px;border:1px solid rgba(31,69,79,.08)}
.s-ui-row.th{background:transparent;border:none;padding:0 8px;color:var(--teal-deep);
  text-transform:uppercase;font-size:.65rem;font-weight:700}
.s-badge.ok{color:var(--teal-deep);background:var(--lime);padding:2px 6px;border-radius:4px;
  font-size:.6rem;font-weight:800;display:inline-block;text-align:center}

/* Customer UI */
.s-ui-item{display:flex;justify-content:space-between;align-items:center;
  background:#FFFFFF;padding:6px 8px;border-radius:6px;border:1px solid rgba(31,69,79,.08)}
.s-item-info{display:flex;flex-direction:column;gap:2px}
.s-item-name{font-weight:600;color:var(--teal-deep)}
.s-item-stock{color:rgba(31,69,79,.85);font-size:.65rem}
.s-item-price{font-weight:700;color:var(--teal-deep)}
.s-ui-footer{display:flex;justify-content:space-between;align-items:center;
  margin-top:2px;padding-top:10px;border-top:1px dashed rgba(31,69,79,.2)}
.s-ui-total{font-weight:700;font-size:.85rem;color:var(--teal-deep)}
.s-ui-btn{background:var(--lime);color:var(--teal-deep);font-weight:800;padding:5px 10px;
  border-radius:6px;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;
  box-shadow:0 2px 8px rgba(222,254,82,.4)}

/* Bridge connector */
.sides-bridge{position:relative;display:flex;flex-direction:column;align-items:center;
  justify-content:center;width:96px;gap:0;padding:0 8px;align-self:stretch}
.sides-line{position:absolute;top:50%;left:0;right:0;height:1px;
  background:repeating-linear-gradient(90deg,rgba(31,69,79,.25) 0 5px,transparent 5px 10px)}
.sides-token-wrap{position:relative;z-index:2;display:flex;align-items:center;justify-content:center}
.sides-order-card{width:32px;height:24px;background:#FFFFFF;border:1px solid var(--lime);
  border-radius:4px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(222,254,82,.3);animation:orderFlow 4s cubic-bezier(.4,0,.2,1) infinite;
  position:relative}
.s-order-lines{width:16px;height:2px;background:rgba(31,69,79,.2);border-radius:1px;
  box-shadow:0 4px 0 rgba(31,69,79,.2),0 -4px 0 rgba(31,69,79,.2)}
.sides-check{position:absolute;font-size:.9rem;font-weight:700;color:var(--teal-deep);
  opacity:0;animation:orderCheck 4s ease infinite;background:var(--lime);
  inset:-1px;display:flex;align-items:center;justify-content:center;border-radius:3px}

@keyframes orderFlow{
  0%,10%{transform:translateX(44px) scale(.8);opacity:0}
  20%{opacity:1;transform:translateX(44px) scale(1)}
  70%,80%{transform:translateX(-44px) scale(1);opacity:1}
  90%,100%{transform:translateX(-44px) scale(.8);opacity:0}
}
@keyframes orderCheck{
  0%,72%{opacity:0;transform:scale(.5)}
  78%,90%{opacity:1;transform:scale(1)}
  100%{opacity:0;transform:scale(.5)}
}

/* Responsive */
@media (max-width:860px){
  .sides-body{grid-template-columns:1fr;gap:0}
  .sides-bridge{width:100%;height:64px;flex-direction:row;padding:8px 0}
  .sides-line{top:0;bottom:0;left:50%;right:auto;width:1px;height:100%;
    background:repeating-linear-gradient(180deg,rgba(31,69,79,.25) 0 5px,transparent 5px 10px)}
  .sides-order-card{animation:orderFlowV 4s cubic-bezier(.4,0,.2,1) infinite}
  @keyframes orderFlowV{
    0%,10%{transform:translateY(32px) scale(.8);opacity:0}
    20%{opacity:1;transform:translateY(32px) scale(1)}
    70%,80%{transform:translateY(-32px) scale(1);opacity:1}
    90%,100%{transform:translateY(-32px) scale(.8);opacity:0}
  }
}
@media (max-width:640px){
  .sides{padding-left:20px;padding-right:20px}
  .sides-panel{padding:20px 20px}
  .s-ui-row{grid-template-columns:1fr 1fr;font-size:.7rem}
  .s-ui-row span:nth-child(2){text-align:right}
  .s-ui-row span:nth-child(3){display:none}
}
@media (prefers-reduced-motion:reduce){
  .sides-order-card,.sides-check{animation:none!important}
  .sides-order-card{transform:translateX(0)!important;opacity:1!important}
  .sides-check{opacity:1!important;transform:scale(1)!important}
}

/* ══ Margin Beat ══ */
.margin-beat{background:#000000;padding:clamp(120px,12vw,180px) 36px;text-align:center;
  border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05);
  position:relative;overflow:hidden}
.m-beat-orb{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:800px;height:800px;background:radial-gradient(circle, rgba(222,254,82,.06) 0%, transparent 60%);
  pointer-events:none;z-index:0}
.m-beat-watermark{position:absolute;bottom:-10%;right:-5%;width:600px;height:600px;
  background:url('img/logomark-white.png') no-repeat center center / contain;
  opacity:.035;pointer-events:none;z-index:0;transform:rotate(-15deg)}
.m-beat-inner{max-width:820px;margin:0 auto;display:flex;flex-direction:column;align-items:center;
  position:relative;z-index:1}
.m-beat-eyebrow{display:block;margin-bottom:1.5rem;font-family:var(--mono);font-size:.75rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--lime)}
.m-beat-title{color:var(--ice);font-weight:700;letter-spacing:-.03em;line-height:1.15;
  font-size:clamp(2rem,3.5vw,3.2rem);margin-bottom:4.5rem;max-width:24ch}
.m-beat-marker{color:var(--ice);white-space:nowrap;
  text-decoration:underline;text-decoration-color:var(--lime);
  text-decoration-thickness:0.12em;text-underline-offset:0.18em}
.m-beat-stat{display:flex;flex-direction:column;align-items:center;gap:12px;
  animation:statGlow 4s ease-in-out infinite}
.m-beat-counter{font-size:clamp(3.5rem,6vw,5rem);font-family:var(--mono);font-weight:700;
  color:var(--lime);line-height:1;text-shadow:0 0 40px rgba(222,254,82,.2)}
.m-beat-label{font-family:var(--mono);font-size:.85rem;color:rgba(255,255,255,.5);
  text-transform:uppercase;letter-spacing:.05em}
.m-beat-sub{font-size:.95rem;color:var(--bluegray);margin-top:4px;max-width:44ch;
  line-height:1.5;text-align:center}

@keyframes statGlow{
  0%,100%{opacity:.85;transform:scale(1)}
  50%{opacity:1;transform:scale(1.02)}
}
@media (prefers-reduced-motion:reduce){
  .m-beat-stat{animation:none!important;transform:scale(1)!important;opacity:1!important}
}

/* ══ Capabilities Accordion ══ */
.caps{padding:clamp(64px,8vw,96px) 36px clamp(32px,4vw,48px);border-top:1px solid rgba(255,255,255,.05);background:var(--teal)}
.caps-inner{max-width:820px;margin:0 auto}
.caps-eyebrow{display:block;margin-bottom:1rem;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.caps-title{font-size:clamp(1.5rem,2.5vw,2.25rem);margin-bottom:2.5rem;max-width:30ch;line-height:1.15;color:var(--ice);font-weight:700}
.caps-lime{color:var(--lime)}
.caps-list{border-top:1px solid var(--line)}
.cap-row{border-bottom:1px solid var(--line);cursor:pointer;position:relative}
.cap-row::before{content:'';position:absolute;left:-24px;top:0;bottom:0;width:2px;background:var(--lime);opacity:0;transition:opacity .2s}
.cap-row:hover::before, .cap-row.active::before{opacity:1}
.cap-row:hover .cap-num, .cap-row.active .cap-num{color:var(--lime)}
.cap-header{display:flex;align-items:baseline;padding:14px 0;gap:2rem}
.cap-left{display:flex;align-items:baseline;gap:1.5rem;flex:0 0 240px}
.cap-num{font-size:.85rem;color:var(--muted);transition:color .2s}
.cap-name{font-size:1.1rem;color:var(--ice);font-weight:600;margin:0}
.cap-right{flex:1}
.cap-short{font-size:.95rem;color:var(--bluegray);margin:0}
.cap-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .4s cubic-bezier(.4,0,.2,1)}
.cap-row:hover .cap-body, .cap-row.active .cap-body{grid-template-rows:1fr}
.cap-detail{overflow:hidden;font-size:.9rem;color:rgba(255,255,255,.6);line-height:1.45;
  padding-left:calc(240px + 2rem);max-width:68ch;margin-bottom:0;opacity:0;transition:opacity .4s, margin-bottom .4s}
.cap-row:hover .cap-detail, .cap-row.active .cap-detail{opacity:1;margin-bottom:16px}

@media (max-width:768px){
  .cap-header{flex-direction:column;gap:.5rem;padding:20px 0}
  .cap-left{flex:none;width:100%}
  .cap-detail{padding-left:2.35rem}
  .cap-row::before{left:-16px}
}
@media (prefers-reduced-motion:reduce){
  .cap-body, .cap-detail{transition:none!important}
}

/* ══ The Stack Section ══ */
.stack-sec{padding:clamp(48px,6vw,64px) 36px clamp(96px,12vw,160px);background:var(--teal);overflow:hidden}
.stack-in{max-width:1150px;margin:0 auto;display:grid;grid-template-columns:1fr 1.3fr;gap:4rem;align-items:center}
.stack-copy{max-width:480px}
.stack-eyebrow{display:block;margin-bottom:1.5rem;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.stack-h2{font-size:clamp(2rem,3.5vw,3rem);line-height:1.15;color:var(--ice);font-weight:700;margin-bottom:2.2rem}
.s-hl-lime{color:var(--lime)}
.stack-lead{font-size:1.15rem;color:var(--bluegray);line-height:1.5;margin-bottom:3rem}
.stack-lead b{color:var(--ice);font-weight:500}
.stack-points{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:1.6rem}
.stack-points li{font-size:1.05rem;color:var(--bluegray);position:relative;padding-left:1.8rem;line-height:1.5}
.stack-points li::before{content:"+";position:absolute;left:0;top:-2px;color:var(--lime);font-size:1.4rem;font-weight:400;line-height:1;font-family:var(--mono)}

.strata-visual{display:flex;justify-content:center;width:100%}
.strata-block{width:100%;display:flex;flex-direction:column;align-items:center}

.stratum{display:flex;flex-direction:column;gap:1rem;padding:32px 48px;position:relative;transition:background .4s ease, opacity .9s cubic-bezier(.32,.72,0,1), transform .9s cubic-bezier(.32,.72,0,1), filter .9s cubic-bezier(.32,.72,0,1), box-shadow .4s ease, border-color .4s ease;width:100%}

@media (min-width:640px) {
  .stratum{flex-direction:row;align-items:center;justify-content:space-between}
  .stratum-head{flex:0 0 auto}
  .stratum-chips{justify-content:flex-end;max-width:440px}
}

.stratum-3{border-radius:16px;background:rgba(18,38,44,.95);z-index:3;box-shadow:0 24px 60px rgba(0,0,0,.3), 0 8px 16px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.05)}
.stratum-3::before{content:'';position:absolute;inset:0;border-radius:16px;box-shadow:inset 0 0 0 1px var(--lime);opacity:.4;pointer-events:none;transition:opacity .3s ease}
.stratum-2{width:calc(100% - 32px);border-radius:0 0 16px 16px;background:rgba(31,69,79,.7);z-index:2;margin-top:-32px;padding-top:64px;box-shadow:0 16px 40px rgba(0,0,0,.2), 0 4px 12px rgba(0,0,0,.3);border:1px solid rgba(255,255,255,.12);border-top:none}
.stratum-1{width:calc(100% - 64px);border-radius:0 0 16px 16px;background:rgba(31,69,79,.4);z-index:1;margin-top:-32px;padding-top:64px;box-shadow:0 8px 24px rgba(0,0,0,.1), 0 2px 6px rgba(0,0,0,.15);border:1px solid rgba(255,255,255,.12);border-top:none}

@media (prefers-reduced-motion:no-preference){
  .stratum:hover{transform:translateY(-4px);transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease, background .25s ease, filter .25s ease}
  .stratum-3:hover{background:rgba(18,38,44,1);box-shadow:0 32px 80px rgba(0,0,0,.35), 0 12px 24px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.25), 0 0 20px rgba(222,254,82,.15)}
  .stratum-3:hover::before{opacity:.7}
  .stratum-2:hover{background:rgba(31,69,79,.85);box-shadow:0 24px 60px rgba(0,0,0,.25), 0 8px 16px rgba(0,0,0,.35);border-color:rgba(255,255,255,.25)}
  .stratum-1:hover{background:rgba(31,69,79,.55);box-shadow:0 16px 40px rgba(0,0,0,.15), 0 4px 12px rgba(0,0,0,.2);border-color:rgba(255,255,255,.25)}
}

.stratum-head{display:flex;flex-direction:column;gap:0.3rem}
.stratum-tag{font-family:var(--mono);font-size:.65rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.s-tag-lime{color:var(--lime)}
.stratum-title{font-size:1.1rem;color:var(--ice);font-weight:600;line-height:1.2}
.stratum-1 .stratum-title{color:var(--bluegray)}

.stratum-chips{display:flex;flex-wrap:wrap;gap:8px;align-content:center}
.s-chip{font-family:var(--mono);font-size:.7rem;color:var(--bluegray);padding:6px 10px;border-radius:6px;border:1px solid rgba(255,255,255,.1);background:rgba(0,0,0,.15);white-space:nowrap;display:inline-flex;align-items:center}
.s-chip-lime{color:var(--ice);border-color:rgba(222,254,82,.3);background:rgba(222,254,82,.1)}

@media (max-width:960px){
  .stack-in{grid-template-columns:1fr;gap:4rem;align-items:start}
  .strata-block{max-width:100%}
}
@media (max-width:640px){
  /* (3) stack-sec padding lateral */
  .stack-sec{padding-left:20px;padding-right:20px}
  /* (3) Stratums: remove overlap on mobile and stack normally */
  .strata-block{display:flex;flex-direction:column;gap:16px}
  .stratum{padding:20px}
  .stratum-2, .stratum-1{width:100%;margin-top:0;padding-top:20px;border-radius:16px;border-top:1px solid rgba(255,255,255,.12)}
}

/* ══ Final CTA ══ */
.cta{background:var(--lime);padding:clamp(96px,12vw,160px) 36px;position:relative;text-align:center;overflow:hidden;
  min-height:calc(100vh - 77px);display:flex;flex-direction:column;align-items:center;justify-content:center}
.cta::before{content:'';position:absolute;inset:0;background-image:url('img/brand/Logomark.Black.png');background-size:64px;background-repeat:repeat;opacity:.06;transform:rotate(-15deg) scale(1.5);pointer-events:none}
.cta-inner{max-width:640px;margin:0 auto;position:relative;z-index:1;width:100%}
.cta .h-section{color:var(--teal-deeper)}
.cta .t-body-l{color:var(--teal-deeper)}
.cta .t-mono{color:rgba(18,38,44,.5)}
.cta-actions{margin:2.6rem 0 1.6rem}
.cta .btn-primary{background:var(--teal-deeper);color:var(--lime);border:none}
.cta .btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 30px rgba(18,38,44,.28)}
/* (4) CTA stamp: smaller tile and lower opacity on mobile */
@media (max-width:640px){
  .cta{padding-left:20px;padding-right:20px;min-height:0}
  .cta::before{background-size:40px;opacity:.04}
}