/* SIA.HAUS Web v2 — P1–P5 editorial system
   Visual-first portfolio, reduced copy, conversion-focused contact, CSS-only motion. */

:root{
  --v2-black:#050505;
  --v2-white:#fff;
  --v2-paper:#f7f7f5;
  --v2-gray:#8a8a8a;
  --v2-line:rgba(0,0,0,.12);
  --v2-line-dark:rgba(255,255,255,.16);
  --v2-pad:clamp(20px,4vw,56px);
  --v2-gap:clamp(28px,4vw,64px);
  --v2-display:clamp(54px,9vw,136px);
  --v2-section:clamp(36px,5vw,72px);
  --v2-ease:cubic-bezier(.16,1,.3,1);
}

/* order: visual proof first */
main{display:flex;flex-direction:column}
.hero{order:1}
.intro{display:none!important}
#work{order:2}
#archive{order:3}
#case-studies{order:4}
#structure{order:5}
#fields{order:6}
#brief{order:7}
#faq{order:8}
#contact{order:9}



.wrap{max-width:1720px;padding-left:var(--v2-pad);padding-right:var(--v2-pad)}
section{padding:clamp(84px,10vw,168px) 0}

/* header */
header.site{height:64px;background:rgba(255,255,255,.9);backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(0,0,0,.08)}
.hdr{height:64px}
.logo{font-size:14px;font-weight:600;letter-spacing:.015em}
nav.main{gap:30px;font-size:13px;color:#666}
nav.main a{transition:color .25s ease}
nav.main a:hover{color:#000}

/* P1 — visual-first hero */
.hero{position:relative;min-height:100svh;padding:64px 0 0!important;background:var(--v2-black);
  overflow:hidden;isolation:isolate}
.hero .wrap{position:relative;z-index:2;width:100%;min-height:calc(100svh - 64px);
  display:flex;align-items:flex-end}
.hero-v2{position:relative;width:100%;padding:clamp(44px,6vw,92px) 0}
.hero-media{position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:cover;
  filter:saturate(.78) contrast(1.04) brightness(.72);transform:scale(1.015)}
.hero-shade{position:absolute;inset:0;z-index:-1;background:
  linear-gradient(180deg,rgba(0,0,0,.08) 18%,rgba(0,0,0,.22) 52%,rgba(0,0,0,.82) 100%),
  linear-gradient(90deg,rgba(0,0,0,.28),transparent 60%)}
.hero-kicker{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:rgba(255,255,255,.72);margin-bottom:20px}
.hero-title{font-size:var(--v2-display);line-height:.86;letter-spacing:-.065em;font-weight:300;
  color:#fff;max-width:11ch;text-wrap:balance}
.hero-subtitle{margin-top:18px;max-width:42ch;color:rgba(255,255,255,.84);
  font-size:clamp(16px,1.5vw,22px);line-height:1.5;font-weight:300;word-break:keep-all}
.hero-role{margin-top:12px;max-width:48ch;color:rgba(255,255,255,.62);font-size:12px;letter-spacing:.04em;word-break:keep-all}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}
.hero-action{display:inline-flex;align-items:center;justify-content:center;min-height:44px;
  padding:0 18px;border:1px solid rgba(255,255,255,.42);color:#fff;font-size:13px;
  letter-spacing:.01em;transition:background .3s var(--v2-ease),color .3s var(--v2-ease),
  border-color .3s var(--v2-ease),transform .3s var(--v2-ease)}
.hero-action:hover{background:#fff;color:#000;border-color:#fff;transform:translateY(-2px)}
.hero-action.secondary{background:rgba(0,0,0,.12);border-color:rgba(255,255,255,.22)}
.hero-meta{position:absolute;right:0;bottom:clamp(46px,6vw,92px);text-align:right;color:#fff}
.hero-meta strong{display:block;font-size:14px;font-weight:500}
.hero-meta span{display:block;margin-top:4px;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.58)}

/* section head — exhibition catalogue spacing */
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.65fr);
  gap:32px;align-items:end;margin-bottom:clamp(44px,6vw,88px)}
.sec-head .eyebrow{grid-column:1/-1;margin:0}
.sec-head h2{grid-column:1;margin:0;font-size:var(--v2-section);font-weight:300;
  line-height:.98;letter-spacing:-.055em}
.sec-head .lead{grid-column:2;margin:0;justify-self:end;max-width:38ch;font-size:14px;line-height:1.65;
  color:#666;word-break:keep-all}

/* P1 + P3 — portfolio is the product */
#work{background:#fff;padding-top:clamp(92px,10vw,160px)}
#archive{background:var(--v2-paper);padding:clamp(64px,8vw,112px) 0}
.archive-disclosure{border-top:1px solid var(--v2-line);border-bottom:1px solid var(--v2-line)}
.archive-disclosure summary{display:flex;justify-content:space-between;align-items:center;padding:22px 0;cursor:pointer;font-size:16px;list-style:none}
.archive-disclosure summary::-webkit-details-marker{display:none}
.archive-disclosure summary span{font-size:20px;transition:transform .25s ease}
.archive-disclosure[open] summary span{transform:rotate(90deg)}
.archive-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--v2-line)}
.archive-row{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--v2-line);font-size:14px;color:#222}
.archive-row span:last-child{color:#777;font-size:11px;letter-spacing:.08em;white-space:nowrap}
.archive-row:hover{color:#000}
.work-grid{display:grid!important;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(18px,2vw,34px)}
.work-card{display:block;grid-column:span 4;background:transparent!important;overflow:visible!important}
.work-card:nth-child(1){grid-column:span 7}
.work-card:nth-child(2){grid-column:span 5}
.work-card:nth-child(3){grid-column:span 5}
.work-card:nth-child(4){grid-column:span 7}
.work-card-media,.work-card-placeholder{aspect-ratio:4/3!important;background:transparent!important;
  overflow:hidden}
.work-card-placeholder{display:none!important}
.work-card:nth-child(1) .work-card-media,.work-card:nth-child(1) .work-card-placeholder,
.work-card:nth-child(4) .work-card-media,.work-card:nth-child(4) .work-card-placeholder{aspect-ratio:16/10!important}
.work-card:nth-child(2) .work-card-media,.work-card:nth-child(2) .work-card-placeholder,
.work-card:nth-child(3) .work-card-media,.work-card:nth-child(3) .work-card-placeholder{aspect-ratio:4/5!important}
.work-card-media img{transition:transform .9s var(--v2-ease),filter .55s ease;
  font-size:0;color:transparent}
.work-card:hover .work-card-media img,.work-card:hover .work-card-media video{transform:scale(1.025)}
.work-card-overlay{position:static!important;inset:auto!important;opacity:1!important;background:transparent!important;
  padding:15px 0 34px!important;color:#000!important;display:grid!important;
  grid-template-columns:minmax(0,1fr) auto;gap:8px 18px}
.work-card-title{color:#111!important;font-size:clamp(15px,1.35vw,19px)!important;font-weight:400!important;
  letter-spacing:-.02em!important}
.work-card-type{color:#777!important;margin:0!important;align-self:center!important;text-align:right;
  font-size:10px!important;letter-spacing:.1em!important}
.work-note{display:none}

/* P2 — reduce explanation; retain proof */
#structure{background:var(--v2-paper);padding:clamp(68px,8vw,112px) 0}
#structure .sec-head{margin-bottom:34px}
#structure .lead{display:block}
#structure .steps{background:transparent;border-top:1px solid var(--v2-line);column-gap:24px;row-gap:0}
#structure .step{background:transparent;padding:24px 0;border-bottom:1px solid var(--v2-line);
  display:grid;grid-template-columns:70px minmax(0,1fr) auto;align-items:baseline}
#structure .step-n{grid-column:1;margin:0}
#structure .step-name{grid-column:2;margin:0;font-size:17px;font-weight:400}
#structure .step-en{grid-column:3;margin:0}

#fields{padding:clamp(76px,9vw,128px) 0}
#fields .sec-head{margin-bottom:30px}
.field-row{padding:clamp(20px,2.6vw,34px) 0}
.field-name{font-size:clamp(26px,3.2vw,46px);font-weight:300;letter-spacing:-.045em}
.field-desc{display:block}
.field-en{font-size:10px;letter-spacing:.12em}

/* FAQ becomes supporting information, not the homepage hero */
#faq{padding:clamp(72px,8vw,120px) 0;border-top:1px solid var(--v2-line)}
#faq .sec-head{margin-bottom:20px}
.faq-list{display:grid;grid-template-columns:1fr 1fr;border-top:0;gap:0 48px}
.faq-item{padding:24px 0;border-top:1px solid var(--v2-line);border-bottom:0}
.faq-item h3{font-size:15px;font-weight:500}
.faq-item p{font-size:13px;line-height:1.7;color:#666;word-break:keep-all}

/* P4 — one decisive conversion zone */
#contact{background:var(--v2-black);color:#fff;padding:clamp(76px,9vw,132px) 0}
#contact .eyebrow{color:rgba(255,255,255,.46)}
#contact .sec-head{margin-bottom:50px}
#contact .sec-head h2{color:#fff;max-width:min(100%,520px);font-size:clamp(26px,3.5vw,52px);line-height:1.15;word-break:keep-all}
#contact .sec-head .lead{color:rgba(255,255,255,.58);font-size:15px}
#contact .contact-grid{display:grid;grid-template-columns:1.5fr .75fr .75fr;gap:40px;border-top:1px solid var(--v2-line-dark);
  padding-top:30px}
#contact .c-block dt{color:rgba(255,255,255,.4)}
#contact .c-block dd{color:rgba(255,255,255,.66)}
#contact .c-mail{font-size:clamp(14px,1.25vw,18px);color:#fff;font-weight:300;letter-spacing:-.02em}
#contact .link-row{border-color:var(--v2-line-dark)}
#contact .link-row b{color:#fff}
#contact .link-row span{color:rgba(255,255,255,.45)}
#contact a{transition:opacity .25s ease}
#contact a:hover{opacity:.62;color:inherit}

footer.site{background:#111;padding:34px 0}

/* P3 — project detail: media first, no dead whitespace */
.proj-hero{padding:clamp(68px,7vw,96px) 0 clamp(24px,3vw,40px)!important}
.proj-hero .wrap{display:grid;grid-template-columns:minmax(0,.85fr) minmax(320px,1.15fr);
  gap:clamp(36px,7vw,104px);align-items:end}
.proj-hero.project-type-archive .wrap{grid-template-columns:1fr;align-items:start}
.proj-main{grid-column:1;min-width:0}
.proj-hero .eyebrow{margin-bottom:18px}
.proj-client{margin:0;font-size:clamp(46px,7vw,104px)!important;line-height:.9!important;
  letter-spacing:-.06em!important;font-weight:300!important}
.project-type-archive .proj-client{font-size:clamp(42px,6vw,82px)!important}
.proj-meta{display:flex;flex-wrap:wrap;gap:8px 14px;margin-top:22px;color:#666;font-family:var(--font-mono);font-size:10px;letter-spacing:.08em}
.proj-name,.proj-ctx,.proj-year,.proj-category{display:inline-block}
.proj-year.is-unknown{color:#999}
.proj-summary{grid-column:2;align-self:end;min-width:0}
.project-type-archive .proj-summary{display:none}
.proj-desc{margin:0!important;max-width:48ch!important;
  font-size:clamp(15px,1.45vw,19px)!important;line-height:1.75!important;word-break:keep-all}
.project-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:30px}
.back-link{margin-top:0!important}
.project-contact-cta{display:inline-block;padding:10px 14px;background:#050505;color:#fff;font-size:12px;letter-spacing:.02em}
.project-contact-cta:hover{background:#333}
.proj-media-wrap{max-width:1720px;margin:clamp(-28px,-2vw,-12px) auto 0;padding:0 var(--v2-pad);position:relative;z-index:1;display:flex;flex-direction:column;gap:clamp(16px,2vw,28px)}
.project-media-more{border-top:1px solid var(--v2-line);border-bottom:1px solid var(--v2-line)}
.project-media-more summary{display:flex;justify-content:space-between;align-items:center;padding:18px 0;cursor:pointer;font-size:13px;list-style:none}
.project-media-more summary::-webkit-details-marker{display:none}
.project-media-more summary span{color:#777;font-family:var(--font-mono);font-size:10px}
.project-media-more-list{display:flex;flex-direction:column;gap:clamp(16px,2vw,28px);padding-top:clamp(16px,2vw,28px)}
.proj-media-stage{position:relative;width:100%;background:#ececea;overflow:hidden}
.proj-media-stage img{width:100%;height:auto;display:block;background:#ececea}
.proj-media-stage.is-video{aspect-ratio:16/9}
.proj-media-stage.is-video video{width:100%;height:100%;object-fit:cover;display:block}
.proj-media-stage iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.proj-media-empty{height:100%;display:flex;align-items:flex-end;padding:clamp(24px,4vw,56px);
  background:#111;color:#fff;font-size:clamp(30px,5vw,72px);font-weight:300;letter-spacing:-.05em}
.project-related{padding:clamp(64px,8vw,112px) 0 0}
.related-project-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line)}
.related-project-card{display:flex;flex-direction:column;gap:12px;padding:24px;background:var(--bg);color:inherit;min-height:150px}
.related-project-card strong{font-size:clamp(18px,2vw,28px);font-weight:400;letter-spacing:-.035em}
.related-project-card span:last-child{margin-top:auto;font-size:12px;color:var(--text-muted)}
.related-project-type{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;color:var(--text-faint)}
.proj-nav{margin-top:clamp(58px,8vw,110px)!important;padding:30px 0!important}
.proj-nav-link{font-size:13px!important}

/* P5 — restrained motion */
@keyframes siaFadeUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@keyframes siaHeroMedia{from{transform:scale(1.04);filter:saturate(.7) brightness(.58)}
  to{transform:scale(1.015);filter:saturate(.78) brightness(.72)}}
.hero-media{animation:siaHeroMedia 1.8s var(--v2-ease) both}
.hero-kicker{animation:siaFadeUp .7s .08s var(--v2-ease) both}
.hero-title{animation:siaFadeUp .95s .12s var(--v2-ease) both}
.hero-subtitle{animation:siaFadeUp .9s .22s var(--v2-ease) both}
.hero-actions{animation:siaFadeUp .9s .32s var(--v2-ease) both}
.hero-meta{animation:siaFadeUp .9s .4s var(--v2-ease) both}

@supports (animation-timeline:view()){
  #work .work-card,#structure .step,#fields .field-row,#faq .faq-item{
    animation:siaFadeUp .8s var(--v2-ease) both;
    animation-timeline:view();
    animation-range:entry 5% cover 20%;
  }
}

@media(max-width:900px){
  .project-actions{margin-top:26px}
  .proj-media-wrap{margin-top:0}
  .hero-meta{display:none}
  .sec-head{grid-template-columns:1fr}
  .sec-head .eyebrow,.sec-head h2,.sec-head .lead{grid-column:1;justify-self:start}
  .work-card,.work-card:nth-child(n){grid-column:span 6}
  #contact .contact-grid{grid-template-columns:1fr}
  .faq-list{grid-template-columns:1fr}
  .proj-hero .wrap{grid-template-columns:1fr;gap:0}
  .proj-main,.proj-summary{grid-column:1}
  .proj-summary{margin-top:30px}
  .related-project-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .hero-title{font-size:clamp(52px,18vw,82px)}
  .hero-v2{padding-bottom:44px}
  .hero-action{width:100%}
  .work-card,.work-card:nth-child(n){grid-column:1/-1}
  #structure .step{grid-template-columns:46px 1fr}
  #structure .step-en{grid-column:2;margin-top:4px}
  .field-row{display:block}
  .field-en{display:block;margin-top:8px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}


/* case studies */
.case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(18px,2vw,28px)}
.case-card{display:block;background:var(--surface);overflow:hidden;border:1px solid var(--line);transition:transform .25s ease,box-shadow .25s ease}
.case-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(0,0,0,.08)}
.case-card-media{aspect-ratio:16/10;background:#e8e8e6;overflow:hidden}
.case-card-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s ease}
.case-card:hover .case-card-media img{transform:scale(1.03)}
.case-card-placeholder{height:100%;display:flex;align-items:flex-end;padding:22px;font-size:24px;line-height:1.1;background:#111;color:#fff}
.case-card-body{padding:clamp(20px,2.5vw,32px)}
.case-card-label,.case-detail-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--text-faint);text-transform:uppercase}
.case-card h3{margin-top:12px;font-size:clamp(20px,2.2vw,30px);font-weight:400;line-height:1.12;letter-spacing:-.03em;color:var(--text-strong)}
.case-card p{margin-top:14px;font-size:14px;line-height:1.7;color:var(--text-subtle);max-width:58ch}
.case-card-link{display:inline-block;margin-top:22px;font-size:12px;color:var(--text-strong);text-decoration:underline;text-underline-offset:4px}
/* project brief */
.brief-form{border-top:1px solid var(--line);padding-top:clamp(24px,3vw,36px)}
.brief-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 24px}
.brief-form label{display:block;font-size:12px;color:var(--text-subtle)}
.brief-form input,.brief-form select,.brief-form textarea{width:100%;margin-top:8px;border:1px solid var(--line);background:var(--surface);border-radius:0;padding:12px 13px;font:inherit;font-size:14px;color:var(--text-strong);outline:none}
.brief-form input:focus,.brief-form select:focus,.brief-form textarea:focus{border-color:var(--text-strong);background:var(--white)}
.brief-form textarea{resize:vertical;min-height:130px}
.brief-full{display:block;margin-top:18px}
.brief-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:22px}
.brief-submit{border:0;background:var(--black);color:var(--white);padding:13px 18px;font:inherit;font-size:12px;cursor:pointer}
.brief-submit:hover{background:#333}
.brief-note{font-size:12px;color:var(--text-faint);max-width:62ch}
/* project case study */
.project-case-study{padding:clamp(64px,9vw,128px) 0 0}
.project-case-study .wrap{max-width:1000px}
.project-case-study h2{max-width:18ch;margin-top:12px;font-size:clamp(30px,4.5vw,62px);line-height:1.02;letter-spacing:-.05em}
.case-detail-summary{max-width:65ch;margin-top:20px;font-size:clamp(16px,1.6vw,21px);line-height:1.7;color:var(--text-muted)}
.case-detail-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);margin-top:48px}
.case-detail-item{background:var(--bg);padding:26px 24px;min-height:150px}
.case-detail-item p{margin-top:12px;font-size:15px;line-height:1.7;color:var(--text-subtle)}
.project-case-study .project-contact-cta{margin-top:30px}
@media(max-width:820px){.case-grid{grid-template-columns:1fr}.case-detail-grid{grid-template-columns:1fr}.brief-grid{grid-template-columns:1fr}}
/* mobile QA patch: accessible navigation, touch targets, and denser conversion spacing */
@media(max-width:820px){
  header.site{height:auto}
  .hdr{height:auto;min-height:64px;flex-wrap:wrap;align-content:center;row-gap:0;gap:0;padding-top:10px;padding-bottom:8px}
  nav.main{display:flex;flex:0 0 100%;order:2;min-width:0;margin-left:0;gap:18px;overflow:visible;white-space:nowrap;padding:10px 0 2px}
  nav.main a{flex:0 0 auto}
  nav.main a:not([href="#work"]):not([href="#case-studies"]):not([href="#brief"]):not(.mailto){display:none}
  .hero{padding-top:84px!important}
  .hero .wrap{min-height:calc(100svh - 84px)}
  .hero-role{font-size:11px;line-height:1.5}
  .work-card-type{font-size:11px!important}
  .field-en{font-size:11px!important}
  .brief-form label{font-size:13px}
  .brief-note{font-size:13px}
  .brief-submit{min-height:44px;font-size:13px}
  .project-contact-cta{min-height:44px;display:inline-flex;align-items:center;font-size:13px}
  .archive-list{grid-template-columns:1fr}
  .archive-row{display:block}
  .archive-row span:last-child{display:block;margin-top:5px}
  #contact{padding:72px 0}
}