/* HCD v2 — Documentary design system. Shared across scenario pages. */
:root{
  --paper:#faf6ee; --paper2:#f2ebdb; --card:#fffdf8;
  --ink:#171310; --muted:#6f6455; --faint:#a89a83;
  --line:rgba(23,19,16,.14);
  --amber:#c97e04; --amber-deep:#a86402; --amber-soft:rgba(201,126,4,.1);
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.7;font-size:16.5px;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.24em;text-transform:uppercase;color:var(--amber-deep);margin-bottom:18px}
h1,h2{font-family:var(--serif);font-weight:600;line-height:1.08;letter-spacing:-.015em}
h1{font-size:clamp(2.6rem,6.4vw,5.2rem)}
h1 em{font-style:italic;color:var(--amber-deep)}
h2{font-size:clamp(2rem,4.6vw,3.4rem);margin-bottom:18px}
h2 em{font-style:italic;color:var(--amber-deep)}
.lead{color:var(--muted);font-size:clamp(1.02rem,1.6vw,1.2rem);max-width:60ch}
section{padding:104px 0}
::selection{background:var(--amber);color:#fff}
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:26px}
.crumb a{text-decoration:none;color:var(--muted)}
.crumb a:hover{color:var(--amber-deep)}
.crumb span{margin:0 8px;color:var(--faint)}

/* header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .3s,box-shadow .3s}
.site-header.scrolled{background:rgba(250,246,238,.92);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-family:var(--serif);font-weight:700;font-size:1.3rem;color:var(--ink)}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--ink);color:#e8a020;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:1.15rem}
.brand small{display:block;font-family:var(--sans);font-size:.6rem;font-weight:600;letter-spacing:.18em;color:var(--muted)}
.nav-links{display:flex;gap:4px;list-style:none;align-items:center}
.nav-links a{text-decoration:none;font-weight:600;font-size:.93rem;color:var(--muted);padding:10px 14px;border-radius:8px}
.nav-links a:hover{color:var(--ink);background:rgba(23,19,16,.05)}
.nav-cta{background:var(--ink)!important;color:var(--paper)!important;padding:12px 22px!important;border-radius:999px!important}
.nav-cta:hover{background:#000!important}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;font-size:1.25rem;padding:6px 12px;cursor:pointer;color:var(--ink)}

/* scenario hero */
.sc-hero{padding:150px 0 80px}
.sc-hero h1{max-width:16ch;margin-bottom:22px}
.sc-hero .sub{max-width:58ch;color:var(--muted);font-size:clamp(1.02rem,1.7vw,1.22rem);margin-bottom:30px}
.spec-chips{display:flex;gap:12px;flex-wrap:wrap;list-style:none;margin-bottom:50px}
.spec-chips li{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:9px 20px;font-size:.88rem;font-weight:600;color:var(--muted)}
.spec-chips b{color:var(--amber-deep)}
.hero-figure{border-radius:22px;overflow:hidden;box-shadow:0 30px 70px rgba(23,19,16,.18)}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-figure figcaption{font-size:.85rem;color:var(--muted);margin-top:12px}

/* challenge cards */
.ch-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:52px}
.ch-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:36px 34px}
.ch-card .n{font-family:var(--serif);font-size:1rem;color:var(--amber-deep);font-weight:700;letter-spacing:.14em;margin-bottom:12px}
.ch-card h3{font-family:var(--serif);font-size:1.55rem;margin-bottom:12px}
.ch-card p{color:var(--muted);font-size:.96rem}
.ch-card p b{color:var(--ink)}

/* exploded view */
.exploded{background:var(--ink);color:#f4efe4;border-radius:28px;margin:0 18px;padding:100px 0}
.exploded .eyebrow{color:#f2b73c}
.exploded h2{color:#fdfaf3}
.exploded .lead{color:rgba(244,239,228,.66)}
.exp-wrap{position:relative;margin-top:56px;border-radius:20px;overflow:hidden;background:#0d0b08}
.exp-wrap img{width:100%;display:block}
.hotspot{position:absolute;width:34px;height:34px;border-radius:50%;background:#f2b73c;color:#1a1408;font-weight:800;font-size:.95rem;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 6px rgba(242,183,60,.25);transition:transform .2s}
.hotspot:hover,.hotspot.active{transform:scale(1.18)}
.exp-detail{margin-top:26px;background:rgba(244,239,228,.06);border:1px solid rgba(244,239,228,.14);border-radius:16px;padding:28px 32px;min-height:130px}
.exp-detail h3{font-family:var(--serif);font-size:1.4rem;color:#f2b73c;margin-bottom:8px}
.exp-detail p{color:rgba(244,239,228,.72);font-size:.97rem;max-width:70ch}

/* detail rows */
.detail-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:44px 0;border-bottom:1px solid var(--line)}
.detail-row:last-child{border-bottom:none}
.detail-row:nth-child(even) .detail-img{order:2}
.detail-img{border-radius:18px;overflow:hidden}
.detail-img img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .6s}
.detail-img:hover img{transform:scale(1.04)}
.detail-copy .tag{display:inline-block;background:var(--amber-soft);color:var(--amber-deep);font-size:.75rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;border-radius:999px;padding:6px 16px;margin-bottom:16px}
.detail-copy h3{font-family:var(--serif);font-size:1.8rem;margin-bottom:12px}
.detail-copy p{color:var(--muted);font-size:.98rem}
.detail-copy ul{margin-top:16px;list-style:none}
.detail-copy li{padding:8px 0 8px 28px;position:relative;color:var(--muted);font-size:.95rem}
.detail-copy li::before{content:"✓";position:absolute;left:0;color:var(--amber-deep);font-weight:800}

/* material table */
.mat-table{margin-top:48px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--card)}
.mat-row{display:grid;grid-template-columns:220px 1fr;padding:26px 34px;border-bottom:1px solid var(--line);gap:24px;align-items:start}
.mat-row:last-child{border-bottom:none}
.mat-row dt{font-family:var(--serif);font-size:1.25rem}
.mat-row dd{color:var(--muted);font-size:.96rem}
.mat-row dd b{color:var(--ink)}

/* case grid 4x2 */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:52px}
.case-card{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;text-decoration:none;transition:transform .25s,box-shadow .25s;display:block}
.case-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(23,19,16,.12)}
.case-card img{width:100%;aspect-ratio:1/1;object-fit:cover}
.case-card .cb{padding:18px 20px 22px}
.case-card h3{font-family:var(--serif);font-size:1.12rem;margin-bottom:6px}
.case-card p{font-size:.86rem;color:var(--muted)}

/* guided flow */
.flow{background:var(--paper2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow-box{max-width:760px;margin:48px auto 0;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:48px;min-height:380px}
.flow-q h3{font-family:var(--serif);font-size:1.7rem;margin-bottom:8px}
.flow-q .step-no{font-size:.8rem;font-weight:700;letter-spacing:.2em;color:var(--faint);text-transform:uppercase;margin-bottom:14px;display:block}
.flow-opts{display:grid;gap:12px;margin-top:28px}
.flow-opts button{text-align:left;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px 22px;font-size:1rem;font-weight:600;cursor:pointer;color:var(--ink);font-family:var(--sans);transition:border-color .2s,background .2s}
.flow-opts button:hover{border-color:var(--amber-deep);background:var(--amber-soft)}
.flow-result h3{font-family:var(--serif);font-size:1.8rem;margin-bottom:14px}
.flow-result p{color:var(--muted);margin-bottom:26px}
.flow-back{background:none;border:none;color:var(--amber-deep);font-weight:700;cursor:pointer;font-size:.92rem;margin-top:22px;font-family:var(--sans)}
.btn{display:inline-block;font-weight:700;padding:16px 32px;border-radius:999px;text-decoration:none;font-size:1rem;transition:transform .2s;border:none;cursor:pointer;font-family:var(--sans)}
.btn:hover{transform:translateY(-2px)}
.btn-solid{background:var(--ink);color:var(--paper)}
.btn-amber{background:var(--amber);color:#fff}

/* spec + faq + cta + footer */
.spec-table{margin-top:48px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--card)}
.spec-row{display:grid;grid-template-columns:1fr 1fr;padding:24px 34px;border-bottom:1px solid var(--line);align-items:baseline}
.spec-row:last-child{border-bottom:none}
.spec-row dt{font-weight:600;color:var(--muted)}
.spec-row dd{font-family:var(--serif);font-size:1.7rem}
.spec-row dd small{font-family:var(--sans);font-size:.92rem;color:var(--muted)}
.faq-list{max-width:800px;margin:48px auto 0}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
.faq-q{width:100%;background:none;border:none;font-family:var(--serif);font-weight:600;font-size:1.12rem;text-align:left;padding:22px 26px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:18px;color:var(--ink)}
.faq-q .pl{font-family:var(--sans);color:var(--amber-deep);font-size:1.5rem;line-height:1;transition:transform .25s;flex:0 0 auto}
.faq-item.open .faq-q .pl{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 26px 24px;color:var(--muted);font-size:.96rem}
.cta-band{text-align:center}
.cta-band h2{font-size:clamp(2.4rem,5.6vw,4.4rem);max-width:18ch;margin:0 auto 20px}
.cta-band p{color:var(--muted);margin-bottom:36px}
footer{background:var(--ink);color:rgba(244,239,228,.7);padding:70px 0 34px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot-grid h4{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(244,239,228,.45);margin-bottom:16px}
.foot-grid ul{list-style:none}
.foot-grid li{margin-bottom:10px}
.foot-grid a{color:rgba(244,239,228,.7);text-decoration:none;font-size:.94rem}
.foot-grid a:hover{color:#f2b73c}
.foot-brand{font-family:var(--serif);font-size:1.6rem;color:#fdfaf3;margin-bottom:14px}
.foot-bottom{border-top:1px solid rgba(244,239,228,.14);padding-top:26px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.85rem;color:rgba(244,239,228,.45)}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:960px){
  .ch-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .detail-row{grid-template-columns:1fr;gap:24px}
  .detail-row:nth-child(even) .detail-img{order:0}
  .mat-row{grid-template-columns:1fr;gap:8px}
  .spec-row{grid-template-columns:1fr;gap:6px}
  .exploded{margin:0;border-radius:0}
  .flow-box{padding:32px 26px}
}
@media(max-width:680px){
  section{padding:76px 0}
  .nav-links{position:fixed;top:72px;left:0;right:0;background:var(--paper);flex-direction:column;align-items:stretch;padding:14px 24px 22px;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .case-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}

/* ===== homepage ===== */
.trust-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--card)}
.trust-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:34px;padding-bottom:34px}
.trust-item{text-align:center}
.trust-item .v{font-family:var(--serif);font-size:2rem;font-weight:700}
.trust-item .v small{font-family:var(--sans);font-size:.95rem;font-weight:600;color:var(--muted)}
.trust-item .k{font-size:.82rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin-top:4px}
.sc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:52px}
.sc-card{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;text-decoration:none;display:block;transition:transform .25s,box-shadow .25s;position:relative}
a.sc-card:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(23,19,16,.13)}
.sc-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.sc-card .cb{padding:22px 24px 26px}
.sc-card h3{font-family:var(--serif);font-size:1.35rem;margin-bottom:8px}
.sc-card p{font-size:.92rem;color:var(--muted);font-style:italic}
.sc-card .go{display:inline-block;margin-top:14px;font-size:.86rem;font-weight:700;color:var(--amber-deep);letter-spacing:.06em}
.sc-card .soon{position:absolute;top:14px;left:14px;background:rgba(23,19,16,.78);color:var(--paper);font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;padding:7px 14px;border-radius:999px}
.sc-card.live{border-color:var(--amber-deep)}
.sc-card.live::after{content:"";position:absolute;inset:0;border-radius:18px;box-shadow:inset 0 0 0 1px var(--amber-deep);pointer-events:none}
.star-teaser{background:var(--ink);color:#f4efe4;border-radius:28px;margin:0 18px;overflow:hidden}
.star-teaser .wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding-top:90px;padding-bottom:90px}
.star-teaser .eyebrow{color:#f2b73c}
.star-teaser h2{color:#fdfaf3}
.star-teaser p{color:rgba(244,239,228,.66);margin:18px 0 30px;max-width:44ch}
.star-teaser img{border-radius:18px;width:100%;aspect-ratio:4/3;object-fit:cover}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:52px}
.step{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:32px 28px}
.step .n{font-family:var(--serif);font-size:2.2rem;color:var(--amber-deep);font-weight:700}
.step h3{font-family:var(--serif);font-size:1.25rem;margin:12px 0 8px}
.step p{font-size:.92rem;color:var(--muted)}
.factory-teaser .wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.factory-teaser img{border-radius:18px;width:100%;aspect-ratio:4/3;object-fit:cover}
@media(max-width:960px){
  .trust-strip .wrap{grid-template-columns:repeat(2,1fr)}
  .sc-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .star-teaser{margin:0;border-radius:0}
  .star-teaser .wrap,.factory-teaser .wrap{grid-template-columns:1fr;gap:36px}
}
@media(max-width:600px){.sc-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr}}