/* split-screen.css — Cinematic-white: hero + main-page white content */

/* ====== HERO — full-viewport media with overlaid text ====== */
.sp__left{
  position:relative;width:100%;min-height:100svh;overflow:hidden;isolation:isolate;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:clamp(60px,8vh,100px) clamp(40px,6vw,96px);
  background:#070a10;color:#eef2f8;
}
/* hero media slot (video or image placeholder) */
.sp__hero__media{
  position:absolute;top:0;left:0;right:0;bottom:0;z-index:0;overflow:hidden;
  background:#070a10;
}
.sp__hero__media video,.sp__hero__media img{
  width:100%;height:100%;object-fit:cover;display:block;
}
.sp__hero__media::after{display:none;}
/* blur vignette + bottom scrim for hero-text legibility */
/* placeholder label when no real media yet */
.sp__hero__media[data-label]::before{
  content:attr(data-label);position:absolute;inset:0;z-index:1;
  display:flex;align-items:center;justify-content:center;
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.14em;text-transform:uppercase;
  color:rgba(255,255,255,0.12);
}
/* heroes whose media is a live canvas (e.g. Ichor particles) must not show the placeholder label */
.sp__hero__media:has(canvas)::before{content:none!important;}
.sp__left > *:not(.sp__hero__media){position:relative;z-index:2;}

.sp__kick{font-family:var(--fd);font-size:12px;font-weight:600;letter-spacing:0.22em;text-transform:uppercase;color:var(--accent2);margin-bottom:22px;display:flex;align-items:center;gap:14px;}
.sp__kick::before{content:'';width:clamp(28px,6vw,56px);height:1px;background:linear-gradient(to right,currentColor 0%,transparent 100%);flex-shrink:0;}
.sp__ti{font-family:var(--fd);font-weight:700;font-size:clamp(36px,6.5vw,84px);line-height:0.97;letter-spacing:-0.04em;margin-bottom:22px;color:#fff;max-width:16ch;}
.sp__sub{display:none;}
.sp__meta{display:flex;flex-wrap:wrap;gap:48px;border-top:1px solid rgba(238,242,248,0.16);padding-top:26px;}
.sp__meta div{display:flex;flex-direction:column;gap:4px;}
.sp__meta h4{font-family:var(--fd);font-size:10px;font-weight:700;letter-spacing:0.16em;text-transform:uppercase;color:var(--accent2);}
.sp__meta p{font-size:14px;color:rgba(238,242,248,0.88);font-weight:500;font-family:var(--fd);}
.sp__nav{display:none;}\n@media(max-width:760px){.sp__left{padding:80px 24px 60px;}.sp__ti{font-size:clamp(28px,9vw,50px);}.sp__meta{gap:24px;}}

/* ====== SHELL ====== */
.sp{display:flex;flex-direction:column;}.sp__right{flex:1;min-width:0;}
.sp__ribbon{display:none;}

/* ====== CONTENT SECTIONS — white, flexible height ====== */
.sp__sec{
  background:transparent;color:var(--ink);
  min-height:auto;display:flex;flex-direction:column;justify-content:center;
  padding:var(--sp-y) var(--sp-x);
  position:relative;overflow:hidden;
}
.sp__sec > .sp__sh,.sp__sec > .sp__h,.sp__sec > .sp__p,.sp__sec > .sp__stats,.sp__sec > .sp__tools,.sp__sec > .sp__take,.sp__sec > .sp__refs,.sp__sec > .sp__people{max-width:none;}
/* behind-text blur removed per request */
.sp__cin__split .sp__cin__txt{display:flex;flex-direction:column;justify-content:center;position:relative;z-index:2;}
/* gradient accent text (when a gradient accent is selected) */
html.has-grad .sp__stat__val,html.has-grad .sp__next__ti em,html.has-grad .sp__h em{background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;}
/* subtle alternating tint — disabled, uniform white */
.sp__sec--dark{background:transparent;}

/* ====== FULL-WIDTH IMAGE MOMENT ====== */
/* ====== FULL-WIDTH PICTURE SECTION — exactly 1× viewport ====== */
/* ====== FULL-WIDTH PICTURE SECTION — fixed aspect so the crop is identical on every screen ====== */
.sp__cin__moment{padding:0!important;display:flex!important;flex-direction:column!important;justify-content:center!important;}
.sp__cin__moment .sp__ph--wide{width:100%;height:auto;aspect-ratio:16/9;min-height:0;position:relative;}
.sp__cin__moment .sp__cin__txt{display:none;}

/* ====== 2×4 OCTET GRID (8 small squares) ====== */
.sp__octet{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:1fr 1fr;gap:6px;width:100%;}
.sp__octet .sp__quad__item{aspect-ratio:1/1;position:relative;overflow:hidden;background:var(--bg2);}
.sp__octet .sp__quad__item img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;}
@media(max-width:640px){.sp__octet{grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(4,1fr);}}
.sp__quad{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:6px;aspect-ratio:1/1;width:100%;overflow:hidden;}
.sp__quad__item{position:relative;overflow:hidden;background:var(--bg2);}
.sp__quad__item img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;}
.sp__quad__item .sp__figcorner{position:absolute;bottom:0;left:0;z-index:2;}

/* ====== SPLIT: TEXT + SQUARE IMAGE ====== */
.sp__cin__split{display:grid;grid-template-columns:1.15fr 0.85fr;gap:clamp(36px,5vw,72px);align-items:center;width:100%;}
.sp__cin__split .sp__cin__txt{display:flex;flex-direction:column;justify-content:center;position:relative;z-index:2;}
.sp__cin__split .sp__cin__txt > :last-child{margin-bottom:0;}
/* alternate direction on even sections */
.sp__sec:nth-child(even) .sp__cin__split .sp__cin__txt{order:2;}
.sp__sec:nth-child(even) .sp__cin__split .sp__ph--sq{order:1;}
@media(max-width:760px){.sp__cin__split{grid-template-columns:1fr;gap:32px;}.sp__sec:nth-child(even) .sp__cin__split .sp__cin__txt{order:0;}.sp__sec:nth-child(even) .sp__cin__split .sp__ph--sq{order:0;}}

/* ====== PICTURE CORNER CAPTION ====== */
.sp__ph--wide .sp__figcorner,.sp__ph--sq .sp__figcorner{
  position:absolute;bottom:0;left:0;z-index:4;
  padding:9px 16px;font-family:var(--fd);font-size:11px;font-weight:600;letter-spacing:0.04em;
  color:#0a0d12;background:transparent;
  max-width:78%;line-height:1.35;
}
.ph-filled > .sp__figcorner{color:#fff;background:linear-gradient(135deg,rgba(7,10,16,0.72),rgba(7,10,16,0.48));}

/* ====== PLACEHOLDERS ====== */
.sp__ph--wide{
  width:100%;aspect-ratio:21/9;
  background:linear-gradient(135deg,var(--bg2) 0%,#ddd8d0 40%,var(--bg2) 100%);
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;flex-shrink:0;
}
.sp__ph--wide img,.sp__ph--wide video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;}
.sp__ph--wide::before{
  content:attr(data-label);
  font-family:var(--fd);font-size:11px;letter-spacing:0.14em;text-transform:uppercase;
  color:var(--mut);
}
/* accent tint overlay on wide placeholders */
.sp__ph--wide::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(29,63,214,0.04) 0%,transparent 50%);
  pointer-events:none;
}
.sp__ph--sq{
  aspect-ratio:1/1;width:100%;
  background:linear-gradient(135deg,var(--bg2),#d8d4cc);
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.sp__ph--sq img,.sp__ph--sq video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;}
.sp__ph--sq::before{
  content:attr(data-label);
  font-family:var(--fd);font-size:10px;letter-spacing:0.12em;text-transform:uppercase;
  color:var(--mut);text-align:center;padding:20px;
}
/* tint on square placeholders */
.sp__ph--sq::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(29,63,214,0.03),transparent);
  pointer-events:none;
}

/* hide particles behind chart sections */
.sp__no-particles{position:relative;z-index:1;background:var(--bg)!important;padding:var(--sp-y) var(--sp-x)!important;}

/* generous breathing room around chart canvases */
.sp__no-particles [style*="max-width"][style*="height"],
.ichor-chart-grid{margin-top:var(--gap-chart)!important;margin-bottom:var(--gap-chart)!important;}

/* ====== TYPOGRAPHY — consistent with main page ====== */
.sp__sh{font-family:var(--fd);font-size:12px;font-weight:600;letter-spacing:0.26em;text-transform:uppercase;color:var(--accent);margin-bottom:var(--gap-eyebrow);display:flex;align-items:center;gap:14px;position:relative;z-index:2;}
.sp__sh::before{content:'';width:30px;height:1px;background:currentColor;flex-shrink:0;}
.sp__h{font-family:var(--fd);font-weight:600;font-size:clamp(30px,5vw,60px);line-height:1.04;letter-spacing:-0.035em;margin-bottom:var(--gap-title);position:relative;z-index:2;}
.sp__p{font-size:clamp(17px,1.6vw,21px);color:var(--sec);line-height:1.8;margin-bottom:var(--gap-para);max-width:54ch;position:relative;z-index:2;font-family:'EB Garamond',Georgia,serif;text-align:justify;text-wrap:pretty;}
.sp__p strong{color:var(--ink);font-weight:500;}
.sp__p:last-child{margin-bottom:0;}
.sp__p a{color:var(--accent);font-weight:600;border-bottom:1px solid transparent;transition:border-color .3s;}
.sp__p a:hover{border-bottom-color:var(--accent);}
/* consistent breathing room above a data module when it follows body copy */
.sp__p + .sp__stats,.sp__p + .sp__tools,.sp__p + .sp__formulae,.sp__p + .sp__take{margin-top:14px;}

/* ====== CAPTION ====== */
.sp__cap{display:flex;gap:10px;align-items:baseline;font-size:12.5px;margin-top:14px;color:var(--ink);position:relative;z-index:2;}
.sp__cap b{font-family:var(--fd);color:var(--accent);font-weight:700;letter-spacing:0.06em;flex-shrink:0;}
.sp__figcap{padding:14px clamp(20px,3vw,36px);display:flex;gap:10px;align-items:baseline;font-size:12.5px;color:var(--ink);}
.sp__figcap b{font-family:var(--fd);color:var(--accent);font-weight:700;letter-spacing:0.06em;flex-shrink:0;}

/* ====== STATS (big metrics) ====== */
.sp__stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:28px;margin:0 0 var(--gap-module);}
.sp__stat{border-top:2px solid var(--accent);padding-top:22px;}
.sp__stat__val{font-family:var(--fd);font-size:clamp(32px,4.5vw,56px);font-weight:700;letter-spacing:-0.03em;color:var(--accent);margin-bottom:10px;line-height:1;}
.sp__stat__lbl{font-size:clamp(13px,1.15vw,15px);color:var(--sec);line-height:1.6;font-family:var(--f);}

/* ====== TOOLS ====== */
.sp__tools{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 var(--gap-module);}
.sp__tool{display:inline-flex;align-items:center;gap:10px;font-family:var(--fd);font-size:13px;font-weight:600;color:var(--ink);border:1.5px solid var(--bd);padding:10px 18px 10px 10px;background:var(--bg);text-decoration:none;transition:border-color .3s,transform .3s var(--ease);}
.sp__tool:hover{border-color:var(--accent);transform:translateY(-2px);}
.sp__tool img{width:24px;height:24px;object-fit:contain;border-radius:3px;flex-shrink:0;}
.sp__tool i{display:grid;place-items:center;width:24px;height:24px;background:var(--accent);color:#fff;font-size:10px;font-weight:700;font-style:normal;border-radius:3px;}

/* ====== TAKEAWAYS ====== */
.sp__take{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;margin:0 0 var(--gap-module);}
.sp__take__c{border-top:2px solid var(--accent);padding-top:22px;}
.sp__take__c h4{font-family:var(--fd);font-weight:600;font-size:clamp(18px,2.2vw,24px);letter-spacing:-0.02em;margin-bottom:12px;}
.sp__take__c p{font-size:14.5px;color:var(--sec);line-height:1.7;font-family:var(--f);text-align:justify;text-wrap:pretty;}

/* ====== REFERENCES ====== */
.sp__refs{border-top:1px solid var(--bd);margin-top:6px;}
.sp__ref{display:grid;grid-template-columns:28px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid var(--bd);}
.sp__ref .n{color:var(--accent);font-family:var(--fd);font-weight:700;font-size:13px;}
.sp__ref p{color:var(--sec);line-height:1.6;font-size:13.5px;font-family:var(--f);}

/* ====== PEOPLE / NAME STATS ====== */
.sp__stats--names{grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:22px;margin:var(--gap-module) 0 0;}
.sp__stats--names .sp__stat__val{font-size:clamp(16px,1.6vw,21px);margin-bottom:0;line-height:1.25;}

/* ====== DIVIDERS ====== */
.sp__divider{display:flex;align-items:center;gap:16px;margin-bottom:14px;}
.sp__divider__num{font-family:var(--fd);font-size:11px;font-weight:700;letter-spacing:0.16em;color:var(--accent);flex-shrink:0;}
.sp__divider__line{flex:1;height:1px;background:var(--bd);}

/* ====== SCROLL REVEAL ====== */
.rv{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.rv.in{opacity:1;transform:none;}
@media print{.rv{opacity:1!important;transform:none!important;}}
@media(prefers-reduced-motion:reduce){.rv{opacity:1!important;transform:none!important;}}

/* ====== NEXT PROJECT ====== */
.sp__next{display:flex;flex-direction:column;justify-content:center;min-height:60svh;padding:clamp(80px,10vh,120px) var(--sp-x);background:transparent;color:var(--ink);position:relative;overflow:hidden;border-top:1px solid var(--bd);}
.sp__next>*{position:relative;z-index:2;}
.sp__next__lbl{font-family:var(--fd);font-size:12px;font-weight:600;letter-spacing:0.22em;text-transform:uppercase;color:var(--accent);margin-bottom:18px;display:flex;align-items:center;gap:14px;}
.sp__next__lbl::before{content:'';width:30px;height:1px;background:currentColor;flex-shrink:0;}
.sp__next__ti{font-family:var(--fd);font-weight:500;font-size:clamp(26px,4.5vw,56px);line-height:1.06;letter-spacing:-0.035em;color:var(--ink);max-width:18ch;transition:transform .5s var(--ease);}
.sp__next:hover .sp__next__ti{transform:translateX(16px);}
.sp__next__ar{margin-top:18px;font-family:var(--fd);font-size:13px;font-weight:600;color:var(--accent);display:flex;align-items:center;gap:10px;}

/* ====== FOOTER ====== */
.sp + .foot{background:transparent;color:var(--sec);border-top:1px solid var(--bd);}
.sp + .foot a{color:var(--sec);}.sp + .foot a:hover{color:var(--ink);}

.sp__cta{display:inline-flex;align-items:center;gap:8px;font-family:var(--fd);font-size:12px;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:var(--accent);margin-top:14px;border-bottom:1.5px solid transparent;transition:border-color .3s,gap .3s;}\n.sp__cta:hover{border-color:var(--accent);gap:14px;}
.sp__formulae{display:flex;gap:18px;margin:0 0 var(--gap-module);flex-wrap:wrap;}
.sp__formula{display:flex;flex-direction:column;gap:3px;padding:12px 18px;border:1px solid var(--bd);border-radius:4px;background:var(--bg2);}
.sp__formula__name{font-family:var(--fd);font-size:10px;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;color:var(--mut);}
.sp__formula__mol{font-family:'EB Garamond',Georgia,serif;font-size:clamp(22px,2.8vw,34px);font-weight:500;color:var(--ink);letter-spacing:0.02em;line-height:1;}
/* ===== Typeset math ===== */
.sp__math{font-family:'EB Garamond',Georgia,serif;font-size:clamp(18px,2vw,26px);color:var(--ink);display:inline-flex;align-items:center;flex-wrap:wrap;gap:0.18em;line-height:1.2;letter-spacing:-0.01em;}
.sp__math .frac{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;margin:0 0.08em;}
.sp__math .frac .num{border-bottom:1.5px solid var(--ink);padding-bottom:2px;text-align:center;min-width:1em;font-size:0.85em;}
.sp__math .frac .den{padding-top:2px;text-align:center;min-width:1em;font-size:0.85em;}
.sp__math .rad{display:inline-flex;align-items:center;vertical-align:middle;}
.sp__math .rad::before{content:'\221A';font-size:1.12em;margin-right:0.04em;}
.sp__math .radicand{border-top:1.5px solid var(--ink);padding:2px 3px 0;}
.sp__math sup{font-size:0.6em;vertical-align:super;line-height:0;}
.sp__math sub{font-size:0.6em;vertical-align:sub;line-height:0;}
.sp__math .op{margin:0 0.22em;}
.acc-list{border-top:1px solid var(--bd);margin-top:10px;}
.acc{border-bottom:1px solid var(--bd);}
.acc__head{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;width:100%;background:none;border:0;color:inherit;text-align:left;cursor:pointer;padding:clamp(20px,2.7vh,34px) 0;font-family:var(--fd);}
.acc__ti{font-family:var(--fd);font-weight:500;font-size:clamp(19px,2.2vw,27px);letter-spacing:-0.02em;color:var(--ink);line-height:1.15;transition:transform .5s var(--ease);}
.acc__head:hover .acc__ti{transform:translateX(8px);}
.acc__ic{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--bd);border-radius:50%;flex-shrink:0;transition:background .45s var(--ease),border-color .45s var(--ease);}
.acc__ic svg{width:15px;height:15px;stroke:var(--ink);fill:none;transition:transform .5s var(--ease),stroke .45s;}
.acc__head:hover .acc__ic{border-color:var(--accent);}
.acc__head:hover .acc__ic svg{stroke:var(--accent);}
.acc.open .acc__ic{background:var(--accent);border-color:var(--accent);}
.acc.open .acc__ic svg{stroke:#fff;transform:rotate(180deg);}
.acc__panel{overflow:hidden;max-height:0;transition:max-height .525s var(--ease);}
.acc__inner{padding:2px 0 34px;max-width:62ch;}
.acc__desc{font-family:'EB Garamond',Georgia,serif;font-size:clamp(16px,1.5vw,20px);color:var(--sec);line-height:1.8;text-align:justify;text-wrap:pretty;}
.acc__desc strong{color:var(--ink);font-weight:500;}
.acc__desc a{color:var(--accent);font-weight:600;border-bottom:1px solid transparent;transition:border-color .3s;font-family:var(--fd);}
.acc__desc a:hover{border-bottom-color:var(--accent);}

/* ============================================================
   MOBILE STRUCTURE — one consistent format for every subpage.
   Replicates the desktop hierarchy on phones: contained hero
   title, generous rhythm, full-width media & charts, and zero
   horizontal overflow (which was shifting centered elements).
   ============================================================ */
@media(max-width:760px){
  html,body{overflow-x:hidden;max-width:100vw;}
  :root{--sp-x:24px;}
  /* hero — title fills the width instead of wrapping into a tall block */
  .sp__left{padding:96px 24px 56px;min-height:90svh;}
  .sp__kick{font-size:11px;letter-spacing:0.15em;margin-bottom:18px;}
  .sp__ti{font-size:clamp(30px,7.6vw,42px);line-height:1.05;letter-spacing:-0.025em;max-width:100%;overflow-wrap:break-word;}
  .sp__meta{gap:18px 22px;padding-top:22px;}
  /* body copy — comfortable, full width, never cramped */
  .sp__h{overflow-wrap:break-word;}
  .sp__p{font-size:17px;line-height:1.75;max-width:100%;}
  /* charts use the full column instead of being squeezed to the centre */
  .sp__no-particles [style*="max-width"][style*="height"]{max-width:100%!important;width:100%!important;}
  .ichor-chart-grid{gap:20px;}
  /* equations & formula chips can never push the page sideways */
  .sp__math{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px;}
  .sp__formulae{gap:10px;}
  .sp__formula{flex:1 1 calc(50% - 5px);}
  /* multi-column modules stack with air */
  .sp__take{grid-template-columns:1fr;gap:26px;}
  .sp__stats{gap:22px;}
  .sp__cin__split{gap:28px;}
}
@media(max-width:430px){
  .sp__ti{font-size:clamp(26px,8vw,36px);}
  .sp__formula{flex:1 1 100%;}
  .sp__left{padding:88px 20px 48px;}
  :root{--sp-x:20px;}
}