@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@300;400;500&family=Jost:wght@200;300;400;500&family=Saira:wght@300;400;500&display=swap');

/* ============ TOKENS ============ */
:root{
  --bg:#0a0e11;            /* graphite charcoal */
  --bg-2:#0c1115;
  --panel:rgba(255,255,255,.012);
  --text:#eef3f4;          /* soft white, dominant */
  --muted:#8fa0a7;
  --faint:#6a7b83;
  --blue:#6cb2cd;          /* softened blueprint cyan — accent only */
  --blue-soft:rgba(108,178,205,.42);
  --line:rgba(126,196,222,.10);
  --line-2:rgba(126,196,222,.055);
  --soft:rgba(255,255,255,.038);
  --grid:rgba(126,196,222,.04);
  --display:'Jost',system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --body:'Saira',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body);font-weight:300;cursor:none;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
mark{background:transparent;color:var(--blue)}
::selection{background:rgba(108,178,205,.20);color:#fff}

/* ============ ENGINEERED WORDMARK ============ */
.wordmark-svg{overflow:visible;display:block}
.wordmark-svg .wm{font-family:var(--display);font-weight:300;font-size:120px;
  fill:var(--text);stroke:none}
.wordmark-svg .wm .ai{fill:var(--blue)}
.wordmark-svg .sub{font-family:var(--mono);font-size:16px;letter-spacing:7px;
  fill:var(--muted);text-transform:uppercase}
.wordmark-svg .ref{font-family:var(--mono);font-size:11px;letter-spacing:2.5px;fill:var(--faint)}
.wordmark-svg .ref.r{text-anchor:end}
/* construction frame */
.full-mark .mk-con path{fill:none;stroke:var(--line);stroke-width:.8;stroke-dasharray:3 7}
.full-mark .mk-con .v{stroke:var(--line-2)}
.full-mark .mk-frame .rule{fill:none;stroke:var(--blue-soft);stroke-width:.9}
.full-mark .mk-frame .brk{fill:none;stroke:var(--blue-soft);stroke-width:1}
.full-mark .mk-reg circle{fill:none;stroke:var(--blue-soft);stroke-width:.9}
.full-mark .mk-reg path{fill:none;stroke:var(--blue-soft);stroke-width:.7}
.full-mark .mk-tick path{stroke:var(--blue-soft);stroke-width:.8}

/* header lockup — the BLUFRAIM logo, solid and crisp */
.brand-wordmark{height:35px;width:auto}
.brand-wordmark .wm{font-size:120px}
/* header logo — pre-knocked-out transparent artwork sits straight on the graphite */
.brand-logo{height:168px;width:auto;display:block}

/* ---- shared hidden states for marks that draw themselves ---- */
.draw-mark .wm{fill:transparent;stroke:var(--text);stroke-width:1.1;
  stroke-dasharray:1700;stroke-dashoffset:1700}
.draw-mark .wm .ai{stroke:var(--blue);fill:transparent}
.draw-mark .mk-frame .rule,.draw-mark .mk-frame .brk{stroke-dasharray:820;stroke-dashoffset:820}
.draw-mark .mk-con,.draw-mark .mk-reg,.draw-mark .mk-tick,.draw-mark .sub,.draw-mark .ref{opacity:0}
@keyframes wmFill{to{fill:var(--text)}}
@keyframes wmFillAI{to{fill:var(--blue)}}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes fade{to{opacity:1}}

/* ============ BLUEPRINT BACKDROP ============ */
.blueprint-bg{position:fixed;inset:0;z-index:-3;
  background:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px),
    radial-gradient(circle at 80% 12%,rgba(108,178,205,.07),transparent 36%),
    var(--bg);
  background-size:80px 80px,80px 80px,100% 100%,100% 100%}
.blueprint-bg:before{content:"";position:absolute;inset:0;
  background:
    linear-gradient(rgba(126,196,222,.075) 1px,transparent 1px),
    linear-gradient(90deg,rgba(126,196,222,.075) 1px,transparent 1px);
  background-size:320px 320px;background-position:-1px -1px}
.blueprint-bg:after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,14,17,.97),rgba(10,14,17,.6) 45%,rgba(10,14,17,.97));}
/* faint registration ticks pinned to the viewport edges */
.edge-ticks{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/44px 1px repeat-x,
    linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 100%/44px 1px repeat-x;
  opacity:.45}
.edge-ticks:before,.edge-ticks:after{content:"";position:absolute;top:0;bottom:0;width:1px;background:var(--line-2)}
.edge-ticks:before{left:34px}.edge-ticks:after{right:34px}

/* drawing-sheet corners + confidential stamp (micro-details) */
.sheet-corners span{position:fixed;width:15px;height:15px;z-index:4000;pointer-events:none;opacity:.5}
.sheet-corners .tl{left:22px;top:22px;border-left:1px solid var(--blue-soft);border-top:1px solid var(--blue-soft)}
.sheet-corners .tr{right:22px;top:22px;border-right:1px solid var(--blue-soft);border-top:1px solid var(--blue-soft)}
.sheet-corners .bl{left:22px;bottom:22px;border-left:1px solid var(--blue-soft);border-bottom:1px solid var(--blue-soft)}
.sheet-corners .br{right:22px;bottom:22px;border-right:1px solid var(--blue-soft);border-bottom:1px solid var(--blue-soft)}
.sheet-stamp{position:fixed;left:12px;top:50%;transform:translateY(-50%);writing-mode:vertical-rl;z-index:4000;pointer-events:none;
  font-family:var(--mono);font-size:9px;letter-spacing:.22em;color:var(--faint);opacity:.36;text-transform:uppercase}

/* ============ REGISTRATION CURSOR ============ */
.cursor-mark{position:fixed;top:0;left:0;width:28px;height:28px;transform:translate(-50%,-50%);
  pointer-events:none;z-index:9999;will-change:transform;opacity:0;
  transition:width .16s ease,height .16s ease,opacity .25s ease}
.cursor-mark:before,.cursor-mark:after{content:"";position:absolute;background:var(--blue-soft)}
.cursor-mark:before{left:50%;top:-7px;bottom:-7px;width:1px;transform:translateX(-.5px)}
.cursor-mark:after{top:50%;left:-7px;right:-7px;height:1px;transform:translateY(-.5px)}
.cursor-mark i{position:absolute;inset:6px;border:1px solid var(--blue-soft);border-radius:50%;transition:inset .16s ease,border-radius .16s ease,border-color .16s ease}
.cursor-mark b{position:absolute;left:50%;top:50%;width:2px;height:2px;background:var(--blue);border-radius:50%;transform:translate(-50%,-50%)}
.cursor-mark.active{width:44px;height:44px}
.cursor-mark.active i{inset:2px;border-color:var(--blue);border-radius:2px}
.cursor-mark.snapped:before,.cursor-mark.snapped:after{background:var(--blue)}
@media(min-width:1051px){
  a,button,input,textarea,label,select,.menu-button,.blueprint-card,[role=button]{cursor:none}
}
/* keyboard focus — a precise registration outline (the cursor is hidden, so this matters) */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,[role=button]:focus-visible{
  outline:1px solid var(--blue);outline-offset:4px;border-radius:1px}
:focus:not(:focus-visible){outline:none}

/* ============ DRAFTING LOADER ============ */
.loader{position:fixed;inset:0;z-index:9000;display:grid;place-items:center;background:#070a0d;
  transition:opacity .7s ease,visibility .7s ease}
.loader.hidden{opacity:0;visibility:hidden}
.loader-grid{position:absolute;inset:0;opacity:0;
  background:
    linear-gradient(rgba(126,196,222,.085) 1px,transparent 1px),
    linear-gradient(90deg,rgba(126,196,222,.085) 1px,transparent 1px);
  background-size:66px 66px;
  mask-image:radial-gradient(circle at 50% 50%,#000,transparent 74%);
  -webkit-mask-image:radial-gradient(circle at 50% 50%,#000,transparent 74%);
  animation:fade .6s ease forwards}
/* corner registration marks */
.loader-reg{position:absolute;width:26px;height:26px;opacity:0;animation:fade .5s ease .2s forwards}
.loader-reg:before,.loader-reg:after{content:"";position:absolute;background:var(--blue-soft)}
.loader-reg:before{left:50%;top:0;bottom:0;width:1px;transform:translateX(-.5px)}
.loader-reg:after{top:50%;left:0;right:0;height:1px;transform:translateY(-.5px)}
.loader-reg.tl{left:6vw;top:8vh}.loader-reg.tr{right:6vw;top:8vh}
.loader-reg.bl{left:6vw;bottom:8vh}.loader-reg.br{right:6vw;bottom:8vh}
.loader-sheet{position:relative;width:min(900px,90vw);display:grid;justify-items:center}
.loader-mark{width:100%;height:auto}
/* exact logo artwork — drafts in on load, black field dropped via screen blend */
.loader-logo{width:100%;height:auto;display:block;mix-blend-mode:screen;opacity:0;animation:fade .9s ease .35s forwards}
/* sequence — geometry & guides · letters · frame · AI · subtitle · soften */
@keyframes conIn{0%{opacity:0}26%{opacity:1}100%{opacity:.5}}
.loader-mark .mk-con{animation:conIn 2s ease .28s forwards}
.loader-mark .mk-tick{animation:fade .5s ease .42s forwards}
.loader-mark .wm{animation:draw 1.05s ease .52s forwards,wmFill .55s ease 1.5s forwards}
.loader-mark .wm .ai{animation:draw 1.05s ease .52s forwards,wmFillAI .55s ease 1.55s forwards}
.loader-mark .mk-frame .rule,.loader-mark .mk-frame .brk{animation:draw .9s ease 1.12s forwards}
.loader-mark .mk-reg{animation:fade .6s ease 1.2s forwards}
.loader-mark .sub{animation:fade .7s ease 1.66s forwards}
.loader-mark .ref{animation:fade .7s ease 1.82s forwards}

/* ============ SHEET TRANSITION ============ */
.page-transition{position:fixed;inset:0;z-index:8000;pointer-events:none;opacity:0;visibility:hidden;
  background:rgba(7,10,13,.97);transition:opacity .2s ease,visibility .2s ease}
.page-transition.active{opacity:1;visibility:visible}
.transition-grid{position:absolute;inset:0;opacity:0;
  background:
    linear-gradient(rgba(126,196,222,.10) 1px,transparent 1px),
    linear-gradient(90deg,rgba(126,196,222,.10) 1px,transparent 1px);
  background-size:58px 58px}
.page-transition.active .transition-grid{animation:fade .3s ease forwards}
.t-h span,.t-v span{position:absolute;background:var(--blue-soft);transform-origin:left}
.t-h span{left:16vw;right:16vw;height:1px;transform:scaleX(0)}
.t-h span:nth-child(1){top:38%}.t-h span:nth-child(2){top:50%}.t-h span:nth-child(3){top:62%}
.t-v span{top:22vh;bottom:22vh;width:1px;transform:scaleY(0);transform-origin:top}
.t-v span:nth-child(1){left:34vw}.t-v span:nth-child(2){right:34vw}
.page-transition.active .t-h span{animation:drawX .45s ease forwards}
.page-transition.active .t-h span:nth-child(2){animation-delay:.05s}
.page-transition.active .t-h span:nth-child(3){animation-delay:.1s}
.page-transition.active .t-v span{animation:drawY .45s ease .08s forwards}
@keyframes drawX{to{transform:scaleX(1)}}
@keyframes drawY{to{transform:scaleY(1)}}
.t-reg{position:absolute;width:22px;height:22px;opacity:0}
.t-reg:before,.t-reg:after{content:"";position:absolute;background:var(--blue)}
.t-reg:before{left:50%;top:0;bottom:0;width:1px;transform:translateX(-.5px)}
.t-reg:after{top:50%;left:0;right:0;height:1px;transform:translateY(-.5px)}
.t-reg.tl{left:33vw;top:36%}.t-reg.tr{right:33vw;top:36%}
.t-reg.bl{left:33vw;bottom:34%}.t-reg.br{right:33vw;bottom:34%}
.page-transition.active .t-reg{animation:fade .3s ease .2s forwards}
.t-mark{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(660px,76vw);height:auto}
/* exact logo artwork — appears centred on the sheet overlay, black field dropped via screen blend */
.t-logo{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(660px,76vw);height:auto;mix-blend-mode:screen;opacity:0}
.page-transition.active .t-logo{animation:fade .45s ease .14s forwards}
.page-transition.active .t-mark .mk-con{animation:fade .5s ease .04s forwards}
.page-transition.active .t-mark .mk-frame .rule,
.page-transition.active .t-mark .mk-frame .brk{animation:draw .6s ease .1s forwards}
.page-transition.active .t-mark .mk-reg,
.page-transition.active .t-mark .mk-tick{animation:fade .4s ease .12s forwards}
.page-transition.active .t-mark .wm{animation:draw .7s ease .18s forwards,wmFill .5s ease .64s forwards}
.page-transition.active .t-mark .wm .ai{animation:draw .7s ease .18s forwards,wmFillAI .5s ease .66s forwards}
.page-transition.active .t-mark .sub{animation:fade .45s ease .74s forwards}
.page-transition.active .t-mark .ref{animation:fade .45s ease .84s forwards}

/* ============ HEADER ============ */
.site-header{position:fixed;left:0;right:0;top:0;z-index:6000;display:flex;align-items:center;justify-content:space-between;
  padding:14px 5vw;background:linear-gradient(to bottom,rgba(10,14,17,.92),rgba(10,14,17,.3),transparent);backdrop-filter:blur(8px)}
.brand{position:relative;display:flex;align-items:center;gap:15px;line-height:1;padding:11px 16px 11px 14px}
/* simplified blueprint construction frame around the lockup */
.brand:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.4;
  transition:opacity .4s ease;
  background:
    linear-gradient(var(--blue-soft),var(--blue-soft)) left top/11px 1px no-repeat,
    linear-gradient(var(--blue-soft),var(--blue-soft)) left top/1px 11px no-repeat,
    linear-gradient(var(--blue-soft),var(--blue-soft)) right top/11px 1px no-repeat,
    linear-gradient(var(--blue-soft),var(--blue-soft)) right top/1px 11px no-repeat,
    linear-gradient(var(--blue-soft),var(--blue-soft)) left bottom/11px 1px no-repeat,
    linear-gradient(var(--blue-soft),var(--blue-soft)) left bottom/1px 11px no-repeat,
    linear-gradient(var(--blue-soft),var(--blue-soft)) right bottom/11px 1px no-repeat,
    linear-gradient(var(--blue-soft),var(--blue-soft)) right bottom/1px 11px no-repeat}
.brand:hover:before{opacity:.7}
.brand-mark{position:relative;width:20px;height:20px;flex:0 0 auto;opacity:.85}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--blue-soft)}
.brand-mark:before{left:50%;top:0;bottom:0;width:1px;transform:translateX(-.5px)}
.brand-mark:after{top:50%;left:0;right:0;height:1px;transform:translateY(-.5px)}
.brand-mark i{position:absolute;inset:4px;border:1px solid var(--blue-soft);border-radius:50%}
.brand-text{display:grid;gap:7px;justify-items:start}
.brand-rule{width:100%;height:1px;background:linear-gradient(90deg,var(--blue-soft),rgba(126,196,222,.04));opacity:.7}
.brand em{font-style:normal;color:var(--muted);font-family:var(--mono);font-size:10.5px;letter-spacing:.22em;text-transform:uppercase}
.site-nav{display:flex;gap:38px;align-items:center}
.site-nav a{font-family:var(--mono);font-size:12.5px;text-transform:uppercase;letter-spacing:.2em;color:#c1cfd4;position:relative;padding-bottom:4px}
.site-nav a:after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--blue);transition:width .3s ease}
.site-nav a:hover{color:var(--blue)}.site-nav a:hover:after{width:100%}
.menu-button{display:none}

/* ============ SHEET FRAME SYSTEM ============ */
.sheet{position:relative}
/* four corner brackets drawn from a single inset overlay */
.sheet>*{position:relative;z-index:1}
.sheet:before{content:"";position:absolute;inset:34px clamp(28px,3.4vw,64px);pointer-events:none;z-index:0;opacity:0;
  transition:opacity 1.1s ease .15s;
  background:
    linear-gradient(var(--blue),var(--blue)) left top/18px 1px no-repeat,
    linear-gradient(var(--blue),var(--blue)) left top/1px 18px no-repeat,
    linear-gradient(var(--blue),var(--blue)) right top/18px 1px no-repeat,
    linear-gradient(var(--blue),var(--blue)) right top/1px 18px no-repeat,
    linear-gradient(var(--blue),var(--blue)) left bottom/18px 1px no-repeat,
    linear-gradient(var(--blue),var(--blue)) left bottom/1px 18px no-repeat,
    linear-gradient(var(--blue),var(--blue)) right bottom/18px 1px no-repeat,
    linear-gradient(var(--blue),var(--blue)) right bottom/1px 18px no-repeat}
.sheet.visible:before{opacity:.26}
/* figure label, top-left of frame */
.sheet:after{content:attr(data-fig) "  ·  " attr(data-coord);position:absolute;top:38px;left:clamp(34px,3.6vw,70px);z-index:0;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.24em;color:var(--faint);text-transform:uppercase;
  opacity:0;transition:opacity .9s ease .45s}
.sheet.visible:after{opacity:.65}
.section-divide{border-bottom:1px solid var(--soft)}

/* ============ HERO ============ */
.hero{min-height:100vh;display:grid;grid-template-columns:1.04fr 1fr;gap:5.6vw;align-items:start;padding:210px 6vw 70px;border-bottom:1px solid var(--soft);position:relative}
/* clear the tall fixed header lockup so the logo never overlaps the first section on any page */
main>section:first-child{padding-top:226px}
.eyebrow{margin:0 0 15px;color:var(--blue);font-family:var(--mono);font-size:11.5px;letter-spacing:.28em;text-transform:uppercase}
h1,h2,h3,p{margin-top:0}
h1{font-family:var(--display);font-weight:200;font-size:clamp(23px,2.55vw,37px);line-height:1.28;letter-spacing:.014em;margin-bottom:21px}
h1 span{display:block;opacity:0;transform:translateY(14px);animation:headingIn .85s ease forwards}
h1 span:nth-child(2){animation-delay:.16s}
@keyframes headingIn{to{opacity:1;transform:translateY(0)}}
.lede,.big{color:#aebcc2;font-size:16px;line-height:1.66;max-width:680px;margin-bottom:20px}
.actions{display:flex;gap:18px;flex-wrap:wrap}
.button{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 26px;
  border:1px solid var(--line);background:rgba(108,178,205,.05);color:#eaf4f7;
  font-family:var(--mono);text-transform:uppercase;letter-spacing:.18em;font-size:12px;transition:background .3s ease,border-color .3s ease}
.button:hover{background:rgba(108,178,205,.11);border-color:var(--blue-soft)}
.button.secondary{background:transparent;border-color:rgba(255,255,255,.08)}
.button:before,.button:after{content:"";position:absolute;width:8px;height:8px;border-color:var(--blue);opacity:.8}
.button:before{left:-1px;top:-1px;border-left:1px solid;border-top:1px solid}
.button:after{right:-1px;bottom:-1px;border-right:1px solid;border-bottom:1px solid}

/* hero drawing meta — slim title block tying the copy to the drawing */
.hero-meta{display:grid;grid-template-columns:repeat(4,auto);gap:0;margin:26px 0 0;border:1px solid var(--line);width:fit-content;max-width:100%}
.hero-meta>div{padding:14px 24px 14px 0;margin-left:22px;border-left:1px solid var(--line-2);display:grid;gap:8px}
.hero-meta>div:first-child{border-left:0;margin-left:20px}
.hero-meta dt{margin:0;font-family:var(--mono);font-size:9.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--faint)}
.hero-meta dd{margin:0;font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:#ccd9de}

/* datum tie-line linking copy and drawing */
.hero-datum{position:absolute;left:6vw;right:6vw;top:55%;height:1px;z-index:0;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--line) 12%,var(--line) 88%,transparent);opacity:0;
  transition:opacity 1.2s ease .5s}
.hero.visible .hero-datum{opacity:.9}
.hero-datum i{position:absolute;left:50%;top:50%;width:9px;height:9px;transform:translate(-50%,-50%);border:1px solid var(--blue-soft);border-radius:50%}
.hero-datum i:before,.hero-datum i:after{content:"";position:absolute;background:var(--blue-soft)}
.hero-datum i:before{left:50%;top:-5px;bottom:-5px;width:1px;transform:translateX(-.5px)}
.hero-datum i:after{top:50%;left:-5px;right:-5px;height:1px;transform:translateY(-.5px)}

/* hero blueprint card */
.blueprint-card{min-height:620px;border:1px solid var(--line);background:linear-gradient(135deg,rgba(108,178,205,.04),rgba(255,255,255,.008));position:relative;overflow:hidden}
.blueprint-card:before{content:"";position:absolute;inset:16px;border:1px solid var(--line-2)}
.blueprint-card svg{width:100%;height:100%;min-height:620px;display:block}
.bp-grid path{stroke:rgba(126,196,222,.05);stroke-width:.6;fill:none}
.bp-frame path{stroke:var(--blue-soft);stroke-width:.8;fill:none}
/* lines that draw on reveal */
.bp-loop path,.bp-spine path,.bp-stage circle,.bp-stage .cross,.bp-stage .leader{
  fill:none;stroke:var(--blue);stroke-width:.85;stroke-dasharray:1300;stroke-dashoffset:1300}
.bp-stage circle{fill:rgba(108,178,205,.05)}
.bp-stage .inspect{stroke:var(--blue-soft);stroke-width:.7;stroke-dasharray:4 5}
.bp-stage .cross,.bp-stage .leader{stroke-width:.7;opacity:.75}
.bp-loop path{stroke-width:.75;opacity:.7}
.bp-loop .tick{opacity:.4}
.bp-spine .dn{stroke-width:.7}
.blueprint-card.visible .bp-loop path,
.blueprint-card.visible .bp-spine path,
.blueprint-card.visible .bp-stage circle,
.blueprint-card.visible .bp-stage .cross,
.blueprint-card.visible .bp-stage .leader{animation:draw 1.4s ease forwards}
.blueprint-card.visible .bp-spine path{animation-delay:.2s}
.blueprint-card.visible .s1 *{animation-delay:.35s}
.blueprint-card.visible .s2 *{animation-delay:.55s}
.blueprint-card.visible .s3 *{animation-delay:.75s}
.blueprint-card.visible .s4 *{animation-delay:.95s}
.blueprint-card.visible .s5 *{animation-delay:1.15s}
.blueprint-card.visible .s6 *{animation-delay:1.35s}
.blueprint-card.visible .bp-loop path{animation-delay:1.6s}
.st-name{fill:#cfdde2;font-family:var(--mono);font-size:14px;letter-spacing:.18em}
.st-no{fill:var(--blue);font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-anchor:end}
.loop-label{fill:var(--faint);font-family:var(--mono);font-size:10px;letter-spacing:.26em;text-anchor:middle}
.bp-coords text{fill:var(--faint);font-family:var(--mono);font-size:10px;letter-spacing:.16em}
.bp-coords .r{text-anchor:end}
.st-name,.st-no,.loop-label,.bp-coords text{opacity:0}
.blueprint-card.visible .s1 .st-name,.blueprint-card.visible .s1 .st-no{animation:fade .7s ease .8s forwards}
.blueprint-card.visible .s2 .st-name,.blueprint-card.visible .s2 .st-no{animation:fade .7s ease 1s forwards}
.blueprint-card.visible .s3 .st-name,.blueprint-card.visible .s3 .st-no{animation:fade .7s ease 1.2s forwards}
.blueprint-card.visible .s4 .st-name,.blueprint-card.visible .s4 .st-no{animation:fade .7s ease 1.4s forwards}
.blueprint-card.visible .s5 .st-name,.blueprint-card.visible .s5 .st-no{animation:fade .7s ease 1.6s forwards}
.blueprint-card.visible .s6 .st-name,.blueprint-card.visible .s6 .st-no{animation:fade .7s ease 1.8s forwards}
.blueprint-card.visible .loop-label{animation:fade .8s ease 2.1s forwards}

/* ---- Evidence focal point — larger geometry, brighter lines, single pulse ---- */
.bp-stage.s3 .inspect{stroke:var(--blue);stroke-width:.8;opacity:.85}
.bp-stage.s3 .inspect-2{stroke:var(--blue-soft)}
.bp-stage.s3 .cross,.bp-stage.s3 .leader{stroke:var(--blue);opacity:1}
.bp-stage.s3 .ev-node{stroke-width:1.05}
.s3 .st-name{fill:#e7f4f8}
.bp-stage .ev-pulse{fill:none;stroke:var(--blue);stroke-width:1.1;opacity:0;
  transform-box:fill-box;transform-origin:center;animation:none!important}
.blueprint-card.visible .ev-pulse{animation:evPulse 1.9s ease 1.5s 1 forwards!important}
@keyframes evPulse{0%{opacity:0;transform:scale(.55)}16%{opacity:.5}100%{opacity:0;transform:scale(1.75)}}
.blueprint-card.visible .bp-coords text{animation:fade .8s ease .5s forwards}

/* ---- added construction detail ---- */
.bp-construct path,.bp-construct circle{fill:none;stroke:rgba(126,196,222,.07);stroke-width:.55;stroke-dasharray:3 7}
.bp-reg circle,.bp-reg path{fill:none;stroke:var(--blue-soft);stroke-width:.7}
.bp-datum .dl,.bp-datum .dt{stroke:var(--blue-soft);stroke-width:.7;fill:none}
.bp-datum .dn{fill:none;stroke:var(--blue);stroke-width:.7}
.bp-datum .dlabel{fill:var(--faint);font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-anchor:middle}
.bp-callout path{stroke:var(--blue-soft);stroke-width:.7;fill:none}
.bp-callout circle{fill:rgba(108,178,205,.06);stroke:var(--blue-soft);stroke-width:.7}
.bp-callout text{fill:var(--blue);font-family:var(--mono);font-size:11px;text-anchor:middle}
.bp-revflag path{fill:rgba(108,178,205,.10);stroke:var(--blue-soft);stroke-width:.7}
.bp-revflag .rl{fill:none;stroke:var(--blue-soft);stroke-width:.6;stroke-dasharray:3 5}
.bp-revflag text{fill:var(--blue);font-family:var(--mono);font-size:10px;text-anchor:middle}
.bp-titleblock path{stroke:var(--line);stroke-width:.7;fill:none}
.bp-titleblock .tb-k{fill:var(--faint);font-family:var(--mono);font-size:8.5px;letter-spacing:.2em}
.bp-titleblock .tb-v{fill:#aebcc2;font-family:var(--mono);font-size:10px;letter-spacing:.1em}
.bp-stage .inspect-2{stroke-dasharray:2 7;opacity:.55}
/* progressive reveal — construction first, annotations last */
.bp-construct,.bp-reg,.bp-datum,.bp-callout,.bp-revflag,.bp-titleblock{opacity:0}
.blueprint-card.visible .bp-reg{animation:fade .8s ease .1s forwards}
.blueprint-card.visible .bp-construct{animation:fade 1.3s ease .2s forwards}
.blueprint-card.visible .bp-titleblock{animation:fade 1s ease 1.1s forwards}
.blueprint-card.visible .bp-datum{animation:fade .9s ease .95s forwards}
.blueprint-card.visible .bp-revflag{animation:fade .8s ease 1.5s forwards}
.blueprint-card.visible .bp-callout{animation:fade .8s ease 1.9s forwards}
/* corner tags on the drawing card */
.bp-tag{position:absolute;z-index:2;font-family:var(--mono);font-size:9px;letter-spacing:.18em;color:var(--faint);text-transform:uppercase;opacity:0;transition:opacity .9s ease .65s}
.blueprint-card.visible .bp-tag{opacity:.72}
.bp-tag.tr{right:16px;top:14px}
.bp-tag.bl{left:16px;bottom:14px}
.bp-tag.br{right:16px;bottom:14px}
.bp-tag.tl{left:14px;top:12px;width:20px;height:20px;display:grid;place-items:center;border:1px solid var(--blue-soft);border-radius:50%;color:var(--blue);letter-spacing:0;font-size:10px}

/* ============ STANDARDS STRIP ============ */
.standards{display:grid;grid-template-columns:1.4fr repeat(5,1fr);gap:1px;padding:0 6vw;background:var(--soft)}
.standards span,.standards strong{display:flex;align-items:center;justify-content:center;min-height:84px;background:var(--bg-2);font-family:var(--mono);letter-spacing:.22em;text-transform:uppercase;font-size:13px;font-weight:300;color:#cdd9dd}
.standards span{justify-content:flex-start;color:var(--blue);font-size:12px;letter-spacing:.18em}

/* ============ TYPOGRAPHY-LED SECTIONS ============ */
h2{font-family:var(--display);font-weight:200;font-size:clamp(18px,2.05vw,29px);line-height:1.3;letter-spacing:.014em}
.split,.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:8vw;padding:94px 6vw;border-bottom:1px solid var(--soft)}
.split p,.why p,.contact p,.programme-lede{color:#aebcc2;font-size:16px;line-height:1.66}

.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--soft);padding:1px 6vw;border-bottom:1px solid var(--soft)}
.flow article,.card-grid article,.detail-grid article{background:var(--bg-2);padding:42px 46px;min-height:240px;position:relative;transition:background .4s ease}
.flow article:hover,.card-grid article:hover,.detail-grid article:hover{background:#0e141a}
.flow article:before,.card-grid article:before{content:"";position:absolute;left:26px;top:26px;width:11px;height:11px;border-left:1px solid var(--blue-soft);border-top:1px solid var(--blue-soft);opacity:.65}
.flow span,.card-grid span,.detail-grid span{color:var(--blue);font-family:var(--mono);letter-spacing:.2em;font-size:12px;text-transform:uppercase}
.flow h3{font-family:var(--display);font-weight:300;font-size:20px;letter-spacing:.03em;margin:22px 0 12px}
.flow p,.card-grid p,.detail-grid p{color:#94a8b0;line-height:1.62;font-size:15px}

.current,.instrument,.programme,.why{padding:90px 6vw;border-bottom:1px solid var(--soft)}
.current h3.sub{font-family:var(--display);font-weight:300;font-size:clamp(16px,1.7vw,23px);letter-spacing:.02em;color:#d2dee2;margin:10px 0 18px}
.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--soft);border:1px solid var(--soft);margin-top:34px}
.intro{margin-bottom:40px}
.card-grid{display:grid;gap:1px;background:var(--soft);border:1px solid var(--soft)}
.four{grid-template-columns:repeat(4,1fr)}
.three{grid-template-columns:repeat(3,1fr)}
.card-grid h3{font-family:var(--display);font-weight:300;margin-top:26px;font-size:17.5px;letter-spacing:.015em;line-height:1.36}
.programme-lede{max-width:760px;margin:16px 0 34px}
.why h2{max-width:1000px}.why p{max-width:760px;margin-top:18px}

/* ============ CONTACT FORM ============ */
form{display:grid;gap:20px}
.hidden-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
label{display:grid;gap:9px;color:var(--muted);font-family:var(--mono);text-transform:uppercase;letter-spacing:.18em;font-size:11px}
input,textarea{width:100%;border:1px solid var(--line);background:rgba(255,255,255,.022);color:var(--text);font-family:var(--body);font-size:15px;padding:15px 16px;outline:none;transition:border-color .25s ease}
input:focus,textarea:focus{border-color:var(--blue-soft)}

footer{display:flex;justify-content:space-between;gap:20px;padding:42px 6vw;color:var(--faint);font-family:var(--mono);text-transform:uppercase;letter-spacing:.18em;font-size:11px}

/* ============ SCROLL REVEAL ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .95s ease,transform .95s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001s!important}
}

/* ============ RESPONSIVE ============ */
@media(max-width:1050px){
  body{cursor:auto}
  .cursor-mark,.edge-ticks{display:none}
  .site-header{padding:12px 22px;align-items:flex-start}
  .brand-wordmark{height:27.5px}
  .brand-logo{height:104px}
  .menu-button{display:block;border:1px solid var(--line);background:transparent;color:var(--text);font-family:var(--mono);padding:9px 14px;text-transform:uppercase;letter-spacing:.16em;font-size:11px}
  .site-nav{position:absolute;top:140px;left:24px;right:24px;display:none;grid-template-columns:1fr;gap:18px;background:rgba(10,14,17,.97);border:1px solid var(--line);padding:20px}
  .site-nav.open{display:grid}
  .hero,.split,.contact{grid-template-columns:1fr;gap:32px}
  .hero{padding:150px 24px 48px}
  .standards{grid-template-columns:1fr 1fr;padding:0 24px}
  .standards span{grid-column:1/-1;justify-content:center}
  .current,.instrument,.programme,.why,.split,.contact,.flow{padding-left:24px;padding-right:24px}
  .current,.instrument,.programme,.why,.split,.contact{padding-top:52px;padding-bottom:52px}
  main>section:first-child{padding-top:166px}
  .flow,.detail-grid,.four,.three{grid-template-columns:1fr}
  .blueprint-card{min-height:520px}.blueprint-card svg{min-height:520px}
  .sheet:before,.sheet:after{display:none}
  .hero-meta{grid-template-columns:1fr 1fr}
  .hero-datum,.sheet-stamp{display:none}
  footer{display:grid;padding:34px 24px}
}