/* ============================================================
   TOKENS
   ============================================================ */
:root{
  --ground:#EDEFF3; --surface:#F7F8FA; --ink:#1C2033; --quiet:#5A6075; --rule:#C9CED9;
  --violet:#4F46C8; --violet-soft:#E3E1FA;
  --ochre:#A97518; --ochre-soft:#F3E7CF;
  --teal:#17766F; --teal-soft:#D5ECE9;
  --future:#8C92A6;
  --display:"Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --text:"Source Serif 4", Georgia, "Times New Roman", serif;
  --measure:64ch;
  color-scheme:light;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ground:#10131E; --surface:#181C2B; --ink:#E8EAF2; --quiet:#A2A8BC; --rule:#2E3448;
    --violet:#9A92FF; --violet-soft:#26244A;
    --ochre:#E2B25B; --ochre-soft:#3A2F1A;
    --teal:#56C7BE; --teal-soft:#16332F;
    --future:#646B82;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --ground:#10131E; --surface:#181C2B; --ink:#E8EAF2; --quiet:#A2A8BC; --rule:#2E3448;
  --violet:#9A92FF; --violet-soft:#26244A;
  --ochre:#E2B25B; --ochre-soft:#3A2F1A;
  --teal:#56C7BE; --teal-soft:#16332F;
  --future:#646B82;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 64px);scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--ground);color:var(--ink);font:400 1.0625rem/1.65 var(--text);-webkit-font-smoothing:antialiased}
img,video,svg{max-width:100%}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--violet);outline-offset:3px;border-radius:4px}
a{color:var(--violet)}

/* ============================================================
   HEADER
   ============================================================ */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--ground)}
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--ground) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.bar-inner{display:flex;align-items:center;gap:1rem;max-width:1240px;margin:0 auto;padding:.6rem 1.25rem}
.brand{font:700 1rem/1 var(--display);font-stretch:85%;letter-spacing:-.01em;text-decoration:none;color:var(--ink);white-space:nowrap}
.nav{display:flex;gap:.15rem;overflow-x:auto;scrollbar-width:none;flex:1}
.nav::-webkit-scrollbar{display:none}
.nav a{font:500 .875rem/1 var(--display);color:var(--quiet);text-decoration:none;padding:.5rem .65rem;border-radius:999px;white-space:nowrap}
.nav a[aria-current="true"]{color:var(--ink);background:var(--surface)}
.tools{display:flex;gap:.4rem}
.chip{display:inline-flex;align-items:center;gap:.4rem;font:600 .8125rem/1 var(--display);padding:.55rem .8rem;border-radius:999px;border:1px solid var(--rule);background:var(--surface);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--ground);border-color:var(--ink)}
.chip svg{width:14px;height:14px}
@media (max-width:760px){.nav{display:none}}

/* ============================================================
   LAYOUT
   ============================================================ */
main{overflow-x:clip}
section{position:relative;padding:clamp(4rem,9vw,7.5rem) 1.25rem}
.wrap{max-width:1240px;margin:0 auto}
.lede{max-width:var(--measure)}
h1,h2,h3{font-family:var(--display);letter-spacing:-.02em;margin:0}
h2{font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.02;font-weight:700;font-stretch:80%;max-width:18ch;margin-bottom:1.25rem}
h3{font-size:1.2rem;font-weight:650;line-height:1.25}
p{margin:0 0 1rem}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1rem 2rem;align-items:end;margin-bottom:clamp(2rem,5vw,3.5rem)}
.sec-head p{color:var(--quiet);max-width:var(--measure);margin:0}
.listen{align-self:start}

/* ============================================================
   HERO
   ============================================================ */
#intro{min-height:calc(100svh - 56px);display:grid;align-items:end;padding-top:2rem}
.hero-stage{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-stage canvas,.hero-stage video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-stage video{opacity:.9}
.hero-copy{position:relative;z-index:1;width:100%}
.hero-title{font:800 clamp(3.2rem,11vw,9.5rem)/.86 var(--display);font-stretch:75%;letter-spacing:-.045em;margin:0 0 1.5rem}
.hero-title span{display:block}
.hero-title .x{color:var(--violet)}
.hero-sub{font-size:clamp(1.1rem,1.8vw,1.35rem);max-width:46ch;margin-bottom:2rem}
.hero-meta{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}
.btn{display:inline-flex;align-items:center;gap:.5rem;font:650 .95rem/1 var(--display);padding:.85rem 1.2rem;border-radius:999px;border:0;background:var(--ink);color:var(--ground);cursor:pointer;text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--rule)}
.hero-note{font:500 .82rem/1.4 var(--display);color:var(--quiet)}

/* ============================================================
   STRATEGY MAP
   ============================================================ */
.map{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:clamp(1rem,4vw,3rem)}
.map-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}
.map-list button{display:grid;grid-template-columns:3.2rem 1fr;gap:.75rem;width:100%;text-align:left;background:none;border:0;border-bottom:1px solid var(--rule);padding:1rem .25rem;cursor:pointer;font:500 1rem/1.35 var(--display)}
.map-list .code{font-weight:750;color:var(--quiet)}
.map-list button[aria-selected="true"]{color:var(--violet)}
.map-list button[aria-selected="true"] .code{color:var(--violet)}
.map-panel{background:var(--surface);border-radius:20px;padding:clamp(1.5rem,4vw,2.75rem);align-self:start;position:sticky;top:90px}
.map-panel .goal{font:600 .85rem/1.3 var(--display);color:var(--quiet);margin-bottom:.75rem}
.map-panel .priority{font-size:1.05rem;color:var(--quiet);margin-bottom:1.5rem}
.map-panel .meaning{font:700 clamp(1.5rem,3vw,2.3rem)/1.1 var(--display);font-stretch:85%;letter-spacing:-.02em;margin:0}
.signals{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5rem;margin-top:clamp(3rem,6vw,5rem)}
.signals blockquote{margin:0;font:600 1.3rem/1.2 var(--display);font-stretch:85%}
.signals p{color:var(--quiet);font-size:.98rem;margin-top:.6rem}
@media (max-width:860px){.map{grid-template-columns:1fr}.map-panel{position:static}.signals{grid-template-columns:1fr}}

/* ============================================================
   TIMELINE (the journey)
   ============================================================ */
#timeline{padding-left:0;padding-right:0}
#timeline .wrap{padding:0 1.25rem}
.track-viewport{position:relative;overflow:hidden}
.track{position:relative;display:flex;gap:0;padding:2rem 0 1rem;width:max-content}
.track-line{position:absolute;left:0;right:0;top:9.25rem;height:2px;background:var(--rule)}
.track-progress{position:absolute;left:0;top:9.25rem;height:2px;background:var(--ink);width:0}
.traveller{position:absolute;top:calc(9.25rem - 13px);left:0;width:28px;height:28px;border-radius:50%;background:var(--violet);box-shadow:0 0 0 6px var(--violet-soft);z-index:2;display:grid;place-items:center}
.traveller svg{width:14px;height:14px;color:#fff}
.year{position:relative;width:300px;flex:none;padding:0 1.25rem}
.year:first-child{margin-left:max(1.25rem,calc((100vw - 1240px)/2 + 1.25rem))}
.year:last-child{margin-right:30vw}
.year-label{font:800 4.5rem/1 var(--display);font-stretch:75%;letter-spacing:-.04em;color:var(--rule);height:6.5rem;display:flex;align-items:flex-end;padding-bottom:.75rem;transition:color .3s}
.year.is-past .year-label{color:var(--ink)}
.year.is-future .year-label{-webkit-text-stroke:1.5px var(--future);color:transparent}
.year .tick{position:absolute;top:calc(7.25rem - 6px);left:1.25rem;width:12px;height:12px;border-radius:50%;background:var(--ground);border:2px solid var(--quiet)}
.year.is-future .tick{border-style:dashed}
.events{list-style:none;margin:2.25rem 0 0;padding:0;display:grid;gap:.9rem}
.event{border-left:3px solid var(--k,var(--quiet));padding:.15rem 0 .15rem .8rem}
.event b{display:block;font:650 .98rem/1.25 var(--display)}
.event span{font-size:.92rem;color:var(--quiet);line-height:1.45;display:block}
.event[data-k="oxford"]{--k:var(--violet)}
.event[data-k="sector"]{--k:var(--teal)}
.event[data-k="market"]{--k:var(--ochre)}
.event[data-k="programme"]{--k:var(--ink)}
.today-flag{position:absolute;top:-1.4rem;font:700 .75rem/1 var(--display);background:var(--ink);color:var(--ground);padding:.35rem .55rem;border-radius:6px;white-space:nowrap}
.legend{display:flex;flex-wrap:wrap;gap:1rem 1.5rem;margin-top:1.5rem;font:500 .85rem/1 var(--display);color:var(--quiet)}
.legend i{display:inline-block;width:14px;height:3px;margin-right:.45rem;vertical-align:middle;background:var(--k)}
.track-viewport.native{overflow-x:auto;scroll-snap-type:x proximity}
.track-viewport.native .year{scroll-snap-align:start}

/* ============================================================
   EVIDENCE
   ============================================================ */
.evidence{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:1.25rem}
.ev{grid-column:span 4;background:var(--surface);border-radius:18px;padding:1.5rem;display:flex;flex-direction:column;gap:1rem}
.ev.wide{grid-column:span 8}
.ev p{margin:0;font-size:.98rem}
.ev .src{font:500 .8rem/1.3 var(--display);color:var(--quiet);margin-top:auto}
.ev .so{font:650 1rem/1.3 var(--display);color:var(--teal)}
.gauge{height:10px;border-radius:999px;background:var(--teal-soft);position:relative;overflow:hidden}
.gauge > i{position:absolute;inset:0 auto 0 0;width:0;background:var(--teal);border-radius:inherit}
.gauge-scale{display:flex;justify-content:space-between;font:500 .75rem/1 var(--display);color:var(--quiet);margin-top:.35rem}
.pair{display:grid;gap:.55rem}
.pair-row{display:grid;grid-template-columns:7.5rem 1fr 3.5rem;gap:.6rem;align-items:center;font:500 .85rem/1.2 var(--display)}
.pair-row .bar-bg{height:12px;background:var(--teal-soft);border-radius:4px;overflow:hidden}
.pair-row .bar-bg i{display:block;height:100%;width:0;background:var(--teal);border-radius:4px}
.pair-row .bar-bg.alt i{background:var(--ochre)}
.pair-row b{text-align:right;font-weight:700}
.dice{display:flex;gap:.5rem;flex-wrap:wrap}
.dice span{font:700 1.6rem/1 var(--display);width:3.2rem;height:3.2rem;display:grid;place-items:center;border-radius:12px;background:var(--violet-soft);color:var(--violet)}
@media (max-width:900px){.ev,.ev.wide{grid-column:span 12}}

/* ============================================================
   FAILURE MODES
   ============================================================ */
.modes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:18px;overflow:hidden}
.mode{background:var(--ground);border:0;text-align:left;padding:1.4rem;min-height:13.5rem;cursor:pointer;display:flex;flex-direction:column;gap:.6rem;position:relative}
.mode .n{font:700 .8rem/1 var(--display);color:var(--quiet)}
.mode h3{font-size:1.15rem}
.mode .look{font-size:.94rem;color:var(--quiet);margin:0}
.mode .fix{display:none;font:650 1.05rem/1.3 var(--display);color:var(--teal);margin:0}
.mode .ev-line{display:none;font-size:.85rem;color:var(--quiet);margin:0}
.mode .hint{margin-top:auto;font:600 .78rem/1 var(--display);color:var(--quiet)}
.mode[aria-expanded="true"]{background:var(--surface)}
.mode[aria-expanded="true"] .look{display:none}
.mode[aria-expanded="true"] .fix,.mode[aria-expanded="true"] .ev-line{display:block}
@media (max-width:960px){.modes{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:540px){.modes{grid-template-columns:1fr}.mode{min-height:0}}

/* ============================================================
   PRINCIPLES
   ============================================================ */
.principles{list-style:none;margin:0;padding:0;counter-reset:p;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 3rem}
.principles li{counter-increment:p;display:grid;grid-template-columns:3rem 1fr;gap:1rem;padding:1.4rem 0;border-top:1px solid var(--rule)}
.principles li::before{content:counter(p);font:800 2.2rem/1 var(--display);font-stretch:75%;color:var(--violet)}
.principles h3{margin-bottom:.35rem}
.principles p{color:var(--quiet);margin:0;font-size:.98rem}
@media (max-width:760px){.principles{grid-template-columns:1fr}}

/* ============================================================
   PROGRAMME
   ============================================================ */
.filters{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:1.75rem}
.prog{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2rem}
.prog h3{margin-bottom:1rem;display:flex;align-items:center;gap:.6rem}
.prog h3 i{width:12px;height:12px;border-radius:3px;background:var(--k)}
.items{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}
.item{width:100%;display:grid;grid-template-columns:3rem 1fr auto;gap:.75rem;align-items:center;text-align:left;background:var(--surface);border:1px solid transparent;border-radius:14px;padding:.9rem 1rem;cursor:pointer}
.item:hover{border-color:var(--rule)}
.item .id{font:800 1rem/1 var(--display);color:var(--k)}
.item .t{font:600 1rem/1.25 var(--display)}
.item .tag{font:600 .72rem/1 var(--display);color:var(--quiet);border:1px solid var(--rule);border-radius:999px;padding:.3rem .5rem}
.item[hidden]{display:none}
.item[aria-expanded="true"]{border-color:var(--k)}
.detail{grid-column:1/-1;font-size:.95rem;color:var(--ink);padding-top:.5rem;display:none}
.item[aria-expanded="true"] .detail{display:block}
.detail dl{display:grid;grid-template-columns:7rem 1fr;gap:.35rem 1rem;margin:0}
.detail dt{font:600 .82rem/1.5 var(--display);color:var(--quiet)}
.detail dd{margin:0}
.loop{margin-top:2.5rem;padding:1.5rem;border-radius:18px;border:1px dashed var(--rule);display:grid;grid-template-columns:auto 1fr;gap:1.25rem;align-items:center}
.loop svg{width:88px;height:88px}
@media (max-width:860px){.prog{grid-template-columns:1fr}}

/* ============================================================
   ROADMAP
   ============================================================ */
.gantt-scroll{overflow-x:auto}
.gantt{min-width:820px;display:grid;grid-template-columns:8.5rem repeat(12,minmax(0,1fr));gap:0;position:relative}
.gantt .mh{font:600 .78rem/1 var(--display);color:var(--quiet);padding:.5rem 0 .75rem .35rem;border-left:1px solid var(--rule)}
.gantt .phase{font:700 1rem/1.1 var(--display);padding:.8rem .8rem;border-radius:12px;margin:0 3px .6rem;background:var(--violet-soft);color:var(--violet);transform-origin:left center}
.gantt .phase small{display:block;font-weight:500;font-size:.78rem;color:var(--quiet);margin-top:.2rem}
.gantt .lane-name{font:700 .95rem/1.2 var(--display);padding:1rem .5rem 1rem 0;border-top:1px solid var(--rule)}
.gantt .cell{border-top:1px solid var(--rule);padding:.8rem .6rem;display:grid;gap:.35rem;align-content:start}
.gantt .cell span{font-size:.84rem;line-height:1.3;background:var(--surface);border-radius:8px;padding:.4rem .5rem;border-left:3px solid var(--k)}
.gates{position:relative;height:5.5rem;grid-column:2/-1;margin-top:1rem;border-top:2px solid var(--ink)}
.gate{position:absolute;top:-11px;transform:translateX(-50%);background:none;border:0;cursor:pointer;padding:0;display:grid;justify-items:center;gap:.4rem}
.gate.end{transform:translateX(calc(-100% + 11px));justify-items:end}
.gate.end em{text-align:right}
.gate .d{width:20px;height:20px;transform:rotate(45deg);border:2px solid var(--violet);background:var(--ground)}
.gate.solid .d{background:var(--violet)}
.gate b{font:700 .82rem/1.2 var(--display);white-space:nowrap}
.gate em{font:400 .78rem/1.35 var(--text);color:var(--quiet);max-width:16rem;display:none;text-align:center}
.gate[aria-expanded="true"] em{display:block}
.roles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem;margin-top:3rem}
.role{border-top:3px solid var(--k);padding-top:1rem}
.role p{font-size:.95rem;color:var(--quiet);margin:.4rem 0 0}
.split{display:flex;height:14px;border-radius:999px;overflow:hidden;margin-top:2rem}
.split i{display:block;height:100%}
.split-legend{display:flex;gap:1.5rem;margin-top:.6rem;font:500 .85rem/1 var(--display);color:var(--quiet)}
@media (max-width:860px){.roles{grid-template-columns:1fr}}

/* ============================================================
   ASK
   ============================================================ */
#ask{background:var(--ink);color:var(--ground)}
#ask h2{color:var(--ground)}
#ask .sec-head p{color:color-mix(in srgb,var(--ground) 70%,var(--ink))}
.asks{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1rem}
.asks li{border-top:2px solid var(--ochre);padding-top:1rem;font:600 1.05rem/1.3 var(--display)}
.measures{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.5rem 1rem;margin-top:3.5rem}
.measures div b{display:block;font:800 2.4rem/1 var(--display);font-stretch:75%;color:var(--ochre)}
.measures div span{font-size:.92rem;opacity:.8}
@media (max-width:860px){.asks{grid-template-columns:1fr 1fr}.measures{grid-template-columns:1fr 1fr}}

/* ============================================================
   MEDIA SLOTS + CAPTIONS + EDITOR
   ============================================================ */
.media-slot{margin-top:2rem;border-radius:18px;overflow:hidden;background:var(--surface);position:relative}
.media-slot video{display:block;width:100%;aspect-ratio:16/9;background:#000}
.media-slot.empty{border:1.5px dashed var(--rule);aspect-ratio:16/9;display:grid;place-items:center;text-align:center;color:var(--quiet);font:500 .9rem/1.4 var(--display);padding:1rem}
.media-slot[data-state="hidden"]{display:none}
.captions{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 1rem);transform:translate(-50%,140%);z-index:30;width:min(760px,calc(100% - 2rem));background:var(--ink);color:var(--ground);border-radius:16px;padding:1rem 1.2rem;display:grid;grid-template-columns:auto 1fr auto;gap:1rem;align-items:center;transition:transform .35s ease;box-shadow:0 12px 40px rgba(16,19,30,.25)}
.captions.on{transform:translate(-50%,0)}
.captions .who{font:700 .78rem/1.2 var(--display);opacity:.7}
.captions p{margin:0;font-size:.98rem;line-height:1.45}
.captions button{background:none;border:1px solid color-mix(in srgb,var(--ground) 30%,transparent);color:var(--ground);border-radius:999px;padding:.45rem .7rem;font:600 .8rem/1 var(--display);cursor:pointer}
.eq{display:flex;gap:3px;align-items:flex-end;height:18px}
.eq i{width:3px;background:var(--ochre);height:30%;border-radius:2px;animation:eq 1s ease-in-out infinite}
.eq i:nth-child(2){animation-delay:.2s}.eq i:nth-child(3){animation-delay:.4s}
@keyframes eq{50%{height:100%}}
@media (prefers-reduced-motion:reduce){.eq i{animation:none;height:70%}}
.editor{position:fixed;right:1rem;top:calc(env(safe-area-inset-top,0px) + 70px);z-index:40;width:min(380px,calc(100% - 2rem));max-height:calc(100svh - 100px);overflow:auto;background:var(--surface);border:1px solid var(--rule);border-radius:18px;padding:1.25rem;box-shadow:0 16px 48px rgba(16,19,30,.2);display:none}
.editor.open{display:block}
.editor h3{margin-bottom:.25rem}
.editor > p{font-size:.88rem;color:var(--quiet)}
.slot-row{display:grid;grid-template-columns:1fr auto;gap:.5rem;align-items:center;padding:.7rem 0;border-top:1px solid var(--rule)}
.slot-row b{font:600 .9rem/1.2 var(--display);display:block}
.slot-row small{color:var(--quiet);font-size:.8rem}
.slot-row .acts{display:flex;gap:.3rem}
.slot-row label,.slot-row button{font:600 .78rem/1 var(--display);padding:.45rem .65rem;border-radius:999px;border:1px solid var(--rule);background:var(--ground);cursor:pointer}
.slot-row input{position:absolute;width:1px;height:1px;opacity:0}
.toast{position:fixed;left:50%;top:calc(env(safe-area-inset-top,0px) + 74px);transform:translateX(-50%);background:var(--ink);color:var(--ground);padding:.6rem 1rem;border-radius:999px;font:600 .85rem/1 var(--display);z-index:50;display:none}
.toast.on{display:block}
footer{padding:2rem 1.25rem;font:500 .85rem/1.5 var(--display);color:var(--quiet)}
footer .wrap{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}

/* reveal hooks (only hidden when JS + motion are active) */
.js-motion [data-reveal]{opacity:0}