/* Stage 4 — evidence-bound English offer architecture and hero-SKU conversion layer. */
:root{
  --stage4-ink:var(--ink,#081a14);
  --stage4-forest:var(--forest,#003c2c);
  --stage4-accent:var(--accent,#008c60);
  --stage4-acid:var(--acid,#25d79a);
  --stage4-paper:var(--paper,#fff);
  --stage4-surface:var(--surface,#f4f7f5);
  --stage4-line:var(--line,rgba(0,86,60,.16));
  --stage4-radius:var(--radius,16px);
  --stage4-shadow:var(--shadow-soft,0 12px 32px rgba(0,53,37,.08));
}
.stage4-kicker{margin:0 0 16px;color:var(--stage4-accent);font:800 .72rem/1.25 var(--font-ui,system-ui);letter-spacing:.16em;text-transform:uppercase}
.stage4-offer-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#061f17 0%,#004b36 66%,#087654 100%);color:#fff}
.stage4-offer-hero:after{content:"";position:absolute;inset:auto -8vw -14vw auto;width:min(48vw,680px);aspect-ratio:1;border:1px solid rgba(255,255,255,.12);border-radius:50%;box-shadow:0 0 0 54px rgba(255,255,255,.025),0 0 0 108px rgba(255,255,255,.018);pointer-events:none}
.stage4-offer-hero__grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(300px,.55fr);gap:clamp(42px,7vw,104px);align-items:end;min-height:670px;padding-block:clamp(110px,13vw,180px) clamp(70px,8vw,112px)}
.stage4-offer-hero__copy{max-width:880px}
.stage4-offer-hero .stage4-kicker{color:#94f2ce}
.stage4-offer-hero h1{max-width:12ch;margin:0;font-size:clamp(3rem,6.7vw,7rem);line-height:.92;letter-spacing:-.052em}
.stage4-offer-hero__lead{max-width:66ch;margin:28px 0 0;color:rgba(255,255,255,.8);font-size:clamp(1.03rem,1.45vw,1.28rem);line-height:1.72}
.stage4-boundary-note{max-width:72ch;margin:24px 0 0;padding-left:16px;border-left:2px solid var(--stage4-acid);color:rgba(255,255,255,.66);font-size:.84rem;line-height:1.6}
.stage4-offer-hero__panel{padding:30px;border:1px solid rgba(255,255,255,.19);border-radius:var(--stage4-radius);background:rgba(4,28,20,.7);backdrop-filter:blur(14px);box-shadow:0 26px 70px rgba(0,0,0,.16)}
.stage4-offer-hero__panel h2{max-width:none;margin:0 0 24px;font-size:clamp(1.75rem,2.6vw,2.8rem)}
.stage4-offer-hero__panel dl{display:grid;gap:0;margin:0}
.stage4-offer-hero__panel dl div{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;padding:14px 0;border-top:1px solid rgba(255,255,255,.13)}
.stage4-offer-hero__panel dt{color:rgba(255,255,255,.62);font-size:.76rem;font-weight:750;letter-spacing:.06em;text-transform:uppercase}
.stage4-offer-hero__panel dd{margin:0;text-align:right;color:#fff;font-size:.78rem;font-weight:750}
.stage4-value-grid,.stage4-path-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.stage4-value-card,.stage4-path-card{min-width:0;padding:28px;border:1px solid var(--stage4-line);border-radius:var(--stage4-radius);background:#fff;box-shadow:var(--stage4-shadow)}
.stage4-value-card h3,.stage4-path-card h3{font-size:clamp(1.35rem,2vw,2rem)}
.stage4-value-card p,.stage4-path-card p{margin:14px 0 0;color:var(--muted);font-size:.9rem;line-height:1.65}
.stage4-path-card{display:flex;min-height:270px;flex-direction:column}
.stage4-path-card a{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:28px;color:var(--stage4-accent);font-size:.84rem;font-weight:800}
.stage4-buying-paths{background:#edf4f0}
.stage4-path-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
.stage4-model-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;min-width:0;max-width:100%}
.stage4-model-card{width:100%;max-width:100%;min-width:0;overflow:hidden;border:1px solid var(--stage4-line);border-radius:var(--stage4-radius);background:#fff;box-shadow:var(--stage4-shadow);transition:transform .25s var(--ease,ease),box-shadow .25s var(--ease,ease)}
.stage4-model-card:hover{transform:translateY(-4px);box-shadow:0 24px 64px rgba(0,53,37,.14)}
.stage4-model-card[hidden]{display:none!important}
.stage4-model-card__media{position:relative;display:block;width:100%;max-width:100%;min-width:0;overflow:hidden;aspect-ratio:1/1;background:#e9efeb}
.stage4-model-card__media img{display:block;width:100%;max-width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease,ease)}
.stage4-model-card:hover .stage4-model-card__media img{transform:scale(1.025)}
.stage4-model-card__media span{position:absolute;left:12px;bottom:12px;padding:7px 10px;border-radius:999px;background:rgba(6,31,23,.78);color:#fff;font-size:.68rem;font-weight:800;letter-spacing:.08em}
.stage4-model-card__body{padding:22px}
.stage4-model-card__category{margin:0 0 9px;color:var(--stage4-accent);font-size:.68rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.stage4-model-card h3{min-height:2.35em;margin:0;font-size:1.12rem;line-height:1.2}
.stage4-model-card dl{display:grid;gap:0;margin:18px 0 0;border-top:1px solid var(--stage4-line)}
.stage4-model-card dl div{display:grid;grid-template-columns:1fr 1.2fr;gap:10px;padding:10px 0;border-bottom:1px solid rgba(0,86,60,.1)}
.stage4-model-card dt{font-size:.68rem;font-weight:750;color:#52675f}.stage4-model-card dd{margin:0;text-align:right;font-size:.68rem;color:#334b42}
.stage4-card-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}
.stage4-shortlist-toggle{grid-column:1/-1;display:flex;align-items:center;gap:9px;padding:10px 12px;border:1px solid var(--stage4-line);border-radius:10px;font-size:.74rem;font-weight:800;cursor:pointer}
.stage4-shortlist-toggle input{width:17px;height:17px;accent-color:var(--stage4-accent)}
.stage4-control{min-height:44px;padding:9px 12px;border:1px solid var(--stage4-line);border-radius:999px;background:#fff;color:var(--stage4-ink);font-size:.72rem;font-weight:800;cursor:pointer;transition:.2s}
.stage4-control:hover,.stage4-control[aria-pressed="true"]{border-color:var(--stage4-accent);background:var(--stage4-ink);color:#fff}
.stage4-shortlist-summary{position:sticky;bottom:16px;z-index:20;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;margin-top:28px;padding:22px 24px;border:1px solid rgba(255,255,255,.12);border-radius:var(--stage4-radius);background:rgba(6,31,23,.96);box-shadow:0 24px 70px rgba(0,0,0,.22);color:#fff;backdrop-filter:blur(12px)}
.stage4-shortlist-summary p{margin:6px 0 0;color:rgba(255,255,255,.68);font-size:.82rem}
.stage4-two-column,.stage4-fact-split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;align-items:start}
.stage4-two-column>div,.stage4-fact-split>article,.stage4-economics,.stage4-private-label-boundary,.stage4-offer-links,.stage4-related{padding:clamp(25px,3.2vw,42px);border:1px solid var(--stage4-line);border-radius:var(--stage4-radius);background:#fff;box-shadow:var(--stage4-shadow)}
.stage4-two-column h2,.stage4-fact-split h2{font-size:clamp(2rem,3.6vw,3.8rem)}
.stage4-economics h3,.stage4-fact-split h3,.stage4-private-label-boundary h3,.stage4-offer-links h3,.stage4-related h3{font-size:clamp(1.4rem,2.2vw,2.1rem)}
.stage4-economics p,.stage4-private-label-boundary p{color:var(--muted)}
.stage4-warning-list{display:grid;gap:11px;margin:22px 0 0;padding:0}
.stage4-warning-list li{position:relative;padding-left:24px;list-style:none;color:var(--muted)}
.stage4-warning-list li:before{content:"!";position:absolute;left:0;top:.15em;display:grid;place-items:center;width:16px;height:16px;border-radius:50%;background:#fff0c9;color:#7c5100;font-size:.65rem;font-weight:900}
.stage4-flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;margin:0;padding:0;border:1px solid var(--stage4-line);border-radius:var(--stage4-radius);overflow:hidden;background:#fff}
.stage4-flow li{min-width:0;min-height:190px;padding:24px;border-right:1px solid var(--stage4-line);list-style:none}
.stage4-flow li:last-child{border-right:0}
.stage4-flow span{display:block;margin-bottom:48px;color:var(--stage4-accent);font-size:.72rem;font-weight:850;letter-spacing:.12em}
.stage4-flow strong{display:block;font-family:var(--font-display,Georgia,serif);font-size:1.32rem;line-height:1.18}
.stage4-link-stack{display:grid;border-top:1px solid var(--stage4-line)}
.stage4-link-stack a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--stage4-line);color:var(--stage4-ink);font-weight:800}
.stage4-link-stack a:hover{color:var(--stage4-accent)}
.stage4-explorer,.stage4-assortment{background:#edf4f0}
.stage4-explorer__controls{display:flex;align-items:end;justify-content:space-between;gap:24px;padding:22px;border:1px solid var(--stage4-line);border-radius:var(--stage4-radius);background:#fff}
.stage4-explorer__controls label{display:grid;gap:8px;font-size:.76rem;font-weight:800}
.stage4-explorer__controls select{min-width:260px;height:48px;padding:0 14px;border:1px solid var(--stage4-line);border-radius:10px;background:#fff}
.stage4-explorer__controls p,.stage4-tool-note{margin:0;color:var(--muted);font-size:.84rem}
.stage4-tool{background:#f7f9f8}
.stage4-compare-panel,.stage4-summary-panel{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;padding:28px;border-radius:var(--stage4-radius);background:var(--stage4-ink);color:#fff}
.stage4-compare-panel p,.stage4-summary-panel p{margin:0;color:rgba(255,255,255,.72)}
.stage4-compare-table{display:grid;gap:0}
.stage4-compare-row{display:grid;grid-template-columns:80px minmax(120px,1.5fr) 1fr 1fr;gap:12px;padding:10px 0;border-top:1px solid rgba(255,255,255,.14);font-size:.77rem}
.stage4-summary-list{display:grid;gap:8px;margin:0;padding:0}
.stage4-summary-list li{list-style:none;color:rgba(255,255,255,.78)}
.stage4-carton-control{display:grid;grid-template-columns:minmax(0,1fr) 74px auto;gap:10px;align-items:center;padding:9px 0;border-top:1px solid rgba(255,255,255,.14)}
.stage4-carton-control input{width:74px;height:40px;border:1px solid rgba(255,255,255,.25);border-radius:8px;background:rgba(255,255,255,.08);color:#fff;text-align:center}
.stage4-hero-readiness{background:#edf4f0}
.stage4-hero-status{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.stage4-hero-status span{padding:8px 11px;border:1px solid var(--stage4-line);border-radius:999px;background:#fff;color:#3f5b51;font-size:.69rem;font-weight:800}
.stage4-hero-facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:0 0 22px;border-top:1px solid var(--stage4-line);border-left:1px solid var(--stage4-line);background:#fff}
.stage4-hero-facts div{min-width:0;padding:18px;border-right:1px solid var(--stage4-line);border-bottom:1px solid var(--stage4-line)}
.stage4-hero-facts dt{color:#5b7168;font-size:.67rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase}.stage4-hero-facts dd{margin:8px 0 0;font-size:.86rem;font-weight:750}
.stage4-hero-facts [data-status="to-confirm"]{background:#fffaf0}
.stage4-hero-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.stage4-hero-grid article{min-width:0;padding:24px;border:1px solid var(--stage4-line);border-radius:var(--stage4-radius);background:#fff}
.stage4-hero-grid h3{font-size:1.35rem}.stage4-hero-grid ul{margin:16px 0 0;padding-left:18px;color:var(--muted);font-size:.86rem}
.stage4-private-label-boundary,.stage4-offer-links,.stage4-related{margin-top:18px}
.stage4-local-tools{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.stage4-contact-boundary{max-width:80ch;margin:22px 0 0;color:var(--muted);font-size:.78rem;line-height:1.55}
.stage4-reviewed{margin:20px 0 0;color:var(--muted);font-size:.76rem}
.stage4-toast{position:fixed;right:20px;bottom:88px;z-index:9999;max-width:min(360px,calc(100vw - 40px));padding:13px 16px;border-radius:10px;background:var(--stage4-ink);color:#fff;box-shadow:0 18px 50px rgba(0,0,0,.25);font-size:.82rem;font-weight:750}
@media(max-width:1180px){
  .stage4-path-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .stage4-model-grid,.stage4-hero-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .stage4-hero-facts{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:900px){
  .stage4-offer-hero__grid{grid-template-columns:1fr;min-height:auto;padding-top:100px}
  .stage4-offer-hero__panel{max-width:620px}
  .stage4-value-grid,.stage4-path-grid,.stage4-model-grid,.stage4-hero-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stage4-flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stage4-flow li{border-bottom:1px solid var(--stage4-line)}
  .stage4-flow li:nth-child(even){border-right:0}
  .stage4-two-column,.stage4-fact-split{grid-template-columns:1fr}
  .stage4-hero-facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stage4-shortlist-summary,.stage4-compare-panel,.stage4-summary-panel{grid-template-columns:1fr}
}
@media(max-width:620px){
  .stage4-offer-hero h1{font-size:clamp(2.7rem,14vw,4.5rem)}
  .stage4-offer-hero__grid{gap:32px;padding-block:84px 56px}
  .stage4-offer-hero__panel{padding:22px}
  .stage4-value-grid,.stage4-path-grid,.stage4-model-grid,.stage4-hero-grid,.stage4-hero-facts{grid-template-columns:minmax(0,1fr)}
  .stage4-model-card{display:grid;grid-template-columns:104px minmax(0,1fr);width:100%;max-width:100%;min-width:0}
  .stage4-model-card__media,.stage4-model-card__body{min-width:0;max-width:100%}
  .stage4-model-card__media{aspect-ratio:auto;min-height:100%}
  .stage4-path-card{min-height:220px}
  .stage4-flow{grid-template-columns:1fr}
  .stage4-flow li{min-height:145px;border-right:0}
  .stage4-flow span{margin-bottom:28px}
  .stage4-card-actions{grid-template-columns:1fr}
  .stage4-shortlist-toggle{grid-column:auto}
  .stage4-shortlist-summary{bottom:76px;margin-inline:-8px;padding:18px}
  .stage4-explorer__controls{align-items:stretch;flex-direction:column}
  .stage4-explorer__controls select{width:100%;min-width:0}
  .stage4-compare-row{grid-template-columns:64px minmax(0,1fr)}
  .stage4-compare-row span:nth-last-child(-n+2){grid-column:2}
  .stage4-carton-control{grid-template-columns:minmax(0,1fr) 64px}
  .stage4-carton-control button{grid-column:1/-1}
  .stage4-offer-hero__panel dl div{grid-template-columns:1fr}.stage4-offer-hero__panel dd{text-align:left}
}

/* Customer Front Stage 4 product-tool contract */
.stage4-summary-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end}
.stage4-summary-panel h2,.stage4-compare-panel h2{margin:0 0 8px;color:#fff}
.stage4-summary-panel [data-stage4-assortment-summary]{margin-top:18px}
.stage4-carton-control>label{display:flex;justify-content:center;min-width:0}
.stage4-card-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:18px}
.stage4-card-actions .stage4-control{display:flex;align-items:center;justify-content:center;text-align:center;text-decoration:none}
@media(max-width:700px){
  .stage4-summary-actions{justify-content:flex-start}
  .stage4-card-actions{grid-template-columns:1fr}
  .stage4-carton-control>label{justify-content:flex-start}
}