/* Casebook / Design Lab — experimental layer
   Uses original typography, project facts and semantic HTML; no third-party runtime. */
:root{--v2-accent:#d0ff91;--v2-border:rgba(209,255,155,.3);--v2-grid:rgba(205,255,160,.052)}
body{--accent:var(--v2-accent);background:#101411}
.site-header{background:rgba(12,17,15,.94);border-bottom-color:rgba(213,250,178,.18)}
.site-mark{letter-spacing:-.09em}
.header-actions{display:flex;gap:10px;align-items:center;margin-left:0}
.theme-toggle{display:flex;align-items:center;gap:8px;cursor:pointer;border:1px solid rgba(210,248,177,.36);padding:10px 13px;background:transparent;color:#e7f8d2;white-space:nowrap;font:750 11px/1.1 Onest,Arial,sans-serif;letter-spacing:.04em;transition:background .25s ease,color .25s ease}
.theme-toggle:hover{background:var(--v2-accent);color:#112012}
.theme-symbol{font-size:17px;font-weight:600;line-height:.7}
.theme-toggle[aria-pressed="true"]{background:var(--v2-accent);color:#101411}
.site-header .header-contact{margin:0}
.page-progress{position:fixed;top:68px;left:0;right:0;z-index:98;height:2px;pointer-events:none;background:rgba(220,251,178,.08)}
.page-progress>div{width:100%;height:100%;background:linear-gradient(90deg,#d0ff91,#a7c4ff,#ffb38d);transform-origin:left;transform:scaleX(var(--read-progress,0));transition:transform .08s linear}
.chapter-index{position:fixed;z-index:80;top:50%;right:15px;transform:translateY(-50%);width:94px;display:flex;flex-direction:column;background:rgba(13,20,17,.93);border:1px solid rgba(212,247,181,.24);padding:15px 9px;backdrop-filter:blur(14px)}
.chapter-index-heading{font:740 9px/1.3 Onest,Arial,sans-serif;color:#bfdbad;text-align:center;margin:3px 0 10px;letter-spacing:.02em}
.chapter-index a{text-decoration:none;display:flex;flex-direction:column;gap:4px;align-items:flex-start;padding:11px 8px;color:#c5d0c1;border-top:1px solid rgba(210,246,186,.12);transition:background .2s,color .2s}
.chapter-index a:hover,.chapter-index a.is-active{background:var(--v2-accent);color:#142118}
.chapter-index a span{font-size:10px;letter-spacing:.07em;font-weight:800}
.chapter-index a strong{font-size:10px;font-weight:740;line-height:1.12}
.cover{min-height:min(960px,calc(100svh - 68px));padding-top:35px;isolation:isolate;background:radial-gradient(ellipse at 77% 33%,rgba(140,193,119,.09),transparent 39%),#101411}
.cover:after{opacity:.68;mask-image:linear-gradient(90deg,transparent 18%,black 83%)}
.cover:before{content:"";position:absolute;z-index:-1;left:-9vw;top:12%;width:50vw;height:50vw;border:1px solid rgba(191,244,150,.08);transform:rotate(-17deg);pointer-events:none}
.cover-field{top:1.7%;right:-2vw;width:50vw;max-width:790px;opacity:.95;transform:rotate(-7deg);transition:transform .6s cubic-bezier(.22,1,.36,1)}
.cover:has(.role-switcher [data-focus="team"].is-active) .cover-field{transform:rotate(0deg) scale(1.03)}
.cover:has(.role-switcher [data-focus="ship"].is-active) .cover-field{transform:rotate(7deg) scale(.99)}
.cover .cover-year{color:#d1ffc5}
.cover-name{margin-top:65px}
.cover h1{letter-spacing:-.099em;line-height:.93;font-size:clamp(62px,8.05vw,154px)}
.cover-highlight{position:relative;display:inline-block;color:#c5fa74}
.cover-highlight:after{content:"";position:absolute;bottom:-.015em;left:0;width:100%;height:2px;background:#c5fa74;opacity:.35}
.cover-outline{-webkit-text-stroke:2px rgba(241,240,232,.9)}
.cover-bottom{align-items:flex-end;gap:30px;margin-top:38px}
.hero-message{flex:1;max-width:800px}
.hero-message>p:first-child{font-size:clamp(18px,1.5vw,22px);line-height:1.63;margin:0}
.role-switcher{display:flex;flex-wrap:wrap;gap:0;margin-top:23px;border:1px solid rgba(215,248,198,.28);max-width:800px}
.role-switcher button{flex:1;min-width:156px;padding:12px 13px;cursor:pointer;color:#bfd5bf;background:rgba(17,27,22,.76);border:0;border-right:1px solid rgba(215,248,198,.2);font:800 11px/1.4 Onest,Arial,sans-serif;letter-spacing:.04em;transition:color .25s,background .25s}
.role-switcher button:last-child{border-right:0}
.role-switcher button:hover{color:#fff;background:#293a29}
.role-switcher button.is-active{background:#c5fa74;color:#102011}
.role-output{font-size:14px!important;line-height:1.5!important;color:#d0e8c3!important;min-height:42px;margin:12px 0 0!important}
.cover-bottom .round-scroll{align-self:flex-start;margin-top:7px}
.cover-footnote{margin-top:22px}
.proof-ticker a{position:relative;overflow:hidden}
.proof-ticker a:after{content:"↗";position:absolute;right:16px;top:22px;font-size:24px;color:rgba(197,250,116,.52);transition:transform .25s}
.proof-ticker a:hover:after{transform:translate(4px,-4px)}
.proof-ticker strong{max-width:310px}
/* Intentional chapter transition: stage-entrance via reveal on its own first viewport */
.chapter{position:relative;scroll-margin-top:68px}
.chapter-rail{position:relative}
.chapter-rail:after{content:"";position:absolute;bottom:-1px;left:var(--desktop-pad);width:80px;height:2px;background:currentColor;opacity:.55}
.chapter-hse .hse-word{background:repeating-linear-gradient(0deg,rgba(20,25,19,.035) 0 1px,transparent 1px 8px),#f1f0e8}
.hse-word{font-weight:800;letter-spacing:-.17em}
.hse-result mark{box-decoration-break:clone;-webkit-box-decoration-break:clone}
.hse-result h2{letter-spacing:-.089em}
.hse-result mark{box-shadow:0 3px 0 rgba(5,14,8,.12)}
.hse-milestones>div{position:relative;transition:background .25s}
.hse-milestones>div:hover{background:rgba(197,250,116,.17)}
.ostrovok-title h2{letter-spacing:-.126em}
.ostrovok-head{position:relative;overflow:hidden}
.ostrovok-head:before{content:"";position:absolute;right:-9vw;top:8%;width:min(65vw,820px);height:min(65vw,820px);border-radius:50%;border:1px solid rgba(176,228,250,.13);box-shadow:0 0 0 75px rgba(166,223,248,.023),0 0 0 145px rgba(166,223,248,.015);pointer-events:none}
.ostrovok-stamp{position:relative;z-index:1}
.pipeline{position:relative}
.pipeline-pulse{position:absolute;pointer-events:none;z-index:4;top:64px;left:0;width:4px;height:calc(100% - 64px);background:linear-gradient(180deg,transparent,#adf0ff,transparent);opacity:.65;transform:translateX(var(--pipeline-position,0))}
.pipeline-node{transition:background .22s}
.pipeline-node:hover{background:rgba(169,229,253,.07)}
.pipeline-node strong{font-weight:780}
.pipeline-node small{letter-spacing:.04em}
.mipt-header{overflow:hidden}
.mipt-header:after{content:"*";position:absolute;right:3vw;top:-22%;font-size:clamp(300px,43vw,760px);line-height:1;opacity:.055;font-weight:800;pointer-events:none;color:#142d61}
.funnel-step{position:relative;transition:background .25s,color .25s,transform .25s}
.funnel-step.is-active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:5px;background:#eff6ff}
.funnel-step:focus-visible{outline:3px solid #17274d;outline-offset:-3px}
.funnel-detail{position:relative}
.funnel-detail:after{content:"RESEARCH / VERIFIED";position:absolute;right:28px;bottom:9px;color:rgba(26,42,82,.35);font-size:9px;font-weight:800;letter-spacing:.08em}
.mipt-metrics>div{position:relative}
.mipt-metrics>div:after{content:"↗";position:absolute;right:0;top:24px;font-size:22px;opacity:.33}
.game-scene{transition:background .25s}
.game-scene[data-mode="3d"]{background:radial-gradient(circle at 50% 48%,rgba(255,179,141,.11),transparent 61%)}
.game-scene .scene-core{transition:transform .4s cubic-bezier(.22,1,.36,1)}
.game-scene[data-mode="3d"] .scene-core{transform:translateY(-13px) scale(1.16)}
.game-stage-meta{align-items:center}
.stage-live{font-size:9px;color:#ffb38d;letter-spacing:.06em}
.leader-layout{position:relative;overflow:hidden}
.leader-layout:after{content:"TEAM";position:absolute;right:-3vw;bottom:-9vw;opacity:.065;font-size:clamp(150px,28vw,550px);font-weight:800;line-height:1;letter-spacing:-.12em;pointer-events:none}
.team-flow{position:relative;z-index:1}
.team-flow-item{position:relative}
.team-flow-item:after{content:"";position:absolute;top:43px;left:17px;bottom:-1px;width:1px;background:rgba(77,122,81,.18)}
.team-flow-item:last-child:after{display:none}
.team-flow-head{display:flex;justify-content:space-between;gap:12px}
.team-flow-head span{font-size:9px;font-weight:700;color:#729076}
.endcap{display:grid;grid-template-columns:1fr .38fr;gap:40px;align-items:end;padding:90px var(--desktop-pad);background:#e7eddc;color:#17221b;position:relative;overflow:hidden}
.endcap-index{grid-column:1/-1;font-size:12px;letter-spacing:.1em;font-weight:800;border-bottom:1px solid rgba(24,39,29,.3);padding-bottom:21px}
.endcap p{font-size:clamp(39px,4.8vw,83px);font-weight:780;line-height:1.1;letter-spacing:-.082em;max-width:1150px;margin:17px 0 10px}
.endcap p strong{background:var(--lime);color:#17211b;font-weight:790;box-decoration-break:clone;-webkit-box-decoration-break:clone;padding:0 .07em}
.endcap-graph{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:clamp(75px,10vw,200px);font-weight:800;line-height:1;letter-spacing:-.12em}
.endcap-graph span:last-child{color:#487b53}
.endcap-graph i{font-style:normal;font-size:.38em;opacity:.45}
.site-footer h2{letter-spacing:-.102em}
.site-footer a{transition:opacity .2s}
@media(max-width:1500px){.chapter-index{display:none}}
@media(max-width:1000px){.cover h1{font-size:clamp(58px,8.1vw,116px)}.cover-field{opacity:.57}.role-switcher button{min-width:136px}}
@media(max-width:740px){
 .site-header{height:64px}
 .header-actions{margin-left:auto}
 .header-contact{display:none}
 .theme-toggle{padding:9px 10px;font-size:10px}
 .theme-symbol{font-size:16px}
 .menu-trigger{margin-left:0}
 .page-progress{top:64px}
 .cover{padding-top:25px;min-height:calc(100svh - 64px)}
 .cover:before{display:none}
 .cover h1{font-size:clamp(43px,10.3vw,76px);letter-spacing:-.095em}
 .cover-field{opacity:.4;transform:none;right:-40%;top:105px}
 .cover-name{margin:48px 0 22px}
 .cover-bottom{margin-top:23px;gap:10px}
 .hero-message>p:first-child{font-size:15.5px;line-height:1.61}
 .role-switcher{gap:0;margin-top:16px}
 .role-switcher button{min-width:0;padding:12px 4px;font-size:9px}
 .role-output{min-height:51px!important;font-size:12px!important;line-height:1.58!important;margin-top:9px!important}
 .cover-bottom .round-scroll{width:43px;height:43px;margin-top:4px}
 .cover-footnote{margin-top:20px;font-size:8px}
 .proof-ticker a:after{top:14px;font-size:18px}
 .pipeline-pulse{display:none}
 .hse-result h2{letter-spacing:-.09em}
 .funnel-detail:after{display:none}
 .endcap{display:block;padding:57px var(--desktop-pad)}
 .endcap p{font-size:clamp(39px,10vw,71px)}
 .endcap-graph{margin-top:35px;max-width:240px;font-size:80px}
 .team-flow-head span{font-size:8px;text-align:right}
}
@media(max-width:370px){
 .cover h1{font-size:41px}
 .role-switcher button{font-size:8px}
 .endcap p{font-size:37px}
}
@media(prefers-reduced-motion:reduce){
 .cover-field,.cover .cover-field,.role-switcher button,.funnel-step,.game-scene .scene-core{transition:none}
 .chapter-index a{transition:none}
}
/* Switch to a warmer, editorial late-night grade without losing project-specific colors */
body[data-grade="noir"]{--v2-accent:#ffb38d;--v2-border:rgba(255,179,141,.36);--v2-grid:rgba(255,179,141,.06)}
body[data-grade="noir"] .cover{background:radial-gradient(ellipse at 74% 29%,rgba(228,123,100,.1),transparent 40%),#1e1516}
body[data-grade="noir"] .cover-highlight{color:#ffb38d}
body[data-grade="noir"] .cover-highlight:after{background:#ffb38d}
body[data-grade="noir"] .cover-field .field-ring{stroke:rgba(255,179,141,.28)}
body[data-grade="noir"] .cover-field .field-links,body[data-grade="noir"] .cover-field .field-path{stroke:rgba(255,179,141,.38)}
body[data-grade="noir"] .cover-field .field-spot{fill:#ffb38d}
body[data-grade="noir"] .cover-field text{fill:#ffb38d}
body[data-grade="noir"] .signal{background:#ffb38d}
body[data-grade="noir"] .round-scroll{color:#ffb38d;border-color:#ffb38d}
body[data-grade="noir"] .round-scroll:hover{background:#ffb38d;color:#1e1516}
body[data-grade="noir"] .role-switcher button.is-active{background:#ffb38d}
body[data-grade="noir"] .role-output{color:#f3d6cc!important}
body[data-grade="noir"] .page-progress>div{background:linear-gradient(90deg,#ffb38d,#b0c7ff,#d0ff91)}
body[data-grade="noir"] .site-footer{background:#f9be9d}
body[data-grade="noir"] .endcap p strong{background:#ffb38d}