:root{
  --paper:#F2F4F6;
  --surface:#FFFFFF;
  --surface-2:#E3E8ED;
  --ink:#0A1C33;
  --ink-2:#41566F;
  --ink-3:#71829A;
  --rule:#D3DBE3;
  --rule-2:#B4C1CD;
  --patina:#007E95;
  --patina-soft:rgba(0,126,149,.13);
  --deep:#032C62;
  --deep-soft:rgba(3,44,98,.11);
  --warn:#A4551F;
  --shadow:0 1px 2px rgba(17,22,25,.05), 0 12px 32px rgba(17,22,25,.055);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#04101F; --surface:#08182B; --surface-2:#0D2137;
    --ink:#E8EEF4; --ink-2:#9FB3C6; --ink-3:#7A8FA5;
    --rule:#14293F; --rule-2:#1F3A54;
    --patina:#35A8BE; --patina-soft:rgba(53,168,190,.16);
    --deep:#5E8FC4; --deep-soft:rgba(94,143,196,.15);
    --warn:#D68A48;
    --shadow:0 1px 2px rgba(0,0,0,.45), 0 14px 36px rgba(0,0,0,.4);
  }
}
:root[data-theme="dark"]{
  --paper:#04101F; --surface:#08182B; --surface-2:#0D2137;
  --ink:#E8EEF4; --ink-2:#9FB3C6; --ink-3:#7A8FA5;
  --rule:#14293F; --rule-2:#1F3A54;
  --patina:#35A8BE; --patina-soft:rgba(53,168,190,.16);
  --deep:#5E8FC4; --deep-soft:rgba(94,143,196,.15);
  --warn:#D68A48;
  --shadow:0 1px 2px rgba(0,0,0,.45), 0 14px 36px rgba(0,0,0,.4);
}

*{box-sizing:border-box}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:"Source Serif 4",Georgia,serif; font-size:17px; line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:"Libre Franklin","Helvetica Neue",Arial,sans-serif;font-weight:600;letter-spacing:-.018em;text-wrap:balance;margin:0}
.lbl,.fig,td.num,th,.mono{font-family:"IBM Plex Mono",ui-monospace,Menlo,monospace}
.lbl{font-size:11px;font-weight:500;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-3)}
a{color:inherit}
.wrap{max-width:1140px;margin:0 auto;padding-inline:20px}

/* channel rule: a measured divider that marks each section */
.channel{height:16px;position:relative;border-top:1px solid var(--rule-2)}
.channel::before{
  content:"";position:absolute;inset:0 0 auto 0;height:7px;
  background-image:repeating-linear-gradient(to right,var(--rule-2) 0 1px,transparent 1px 44px);
}
.channel.deep::after{
  content:"";position:absolute;left:0;top:-1px;width:120px;height:2px;background:var(--patina);
}

.top{
  position:sticky;top:env(safe-area-inset-top,0px);z-index:40;
  background:color-mix(in srgb,var(--paper) 90%,transparent);
  backdrop-filter:saturate(1.3) blur(10px);border-bottom:1px solid var(--rule);
}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:13px}
.mark{display:flex;align-items:center;gap:10px;text-decoration:none}
.mark svg{width:30px;height:30px;flex:0 0 30px;color:var(--ink)}
.top .mark svg{color:var(--deep)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .top .mark svg{color:#5E8FC4}}
:root[data-theme="dark"] .top .mark svg{color:#5E8FC4}
.wordmark{font-family:"Libre Franklin",sans-serif;font-weight:700;font-size:15.5px;letter-spacing:.06em}
.wordmark span{font-weight:400;color:var(--ink-3)}
.nav{display:flex;gap:22px;font-family:"Libre Franklin",sans-serif;font-size:13.5px;font-weight:500}
.nav a{color:var(--ink-2);text-decoration:none;padding-block:4px;border-bottom:1.5px solid transparent}
.nav a:hover,.nav a:focus-visible{color:var(--ink);border-bottom-color:var(--patina)}
@media (max-width:780px){.nav{display:none}}

.hero{padding-block:clamp(46px,7vw,82px) clamp(38px,5vw,60px)}
.eyebrow{display:flex;align-items:center;gap:14px}
.eyebrow .taut{flex:1;height:1px;background:var(--patina)}
.hero h1{font-size:clamp(34px,5.8vw,62px);line-height:1.04;letter-spacing:-.032em;max-width:17ch;margin-top:22px}
.hero .sub{margin-top:22px;max-width:58ch;font-size:clamp(17px,2vw,20px);color:var(--ink-2);font-weight:300;line-height:1.55}
.hero-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:1px;margin-top:42px;background:var(--rule);border:1px solid var(--rule)}
.hero-stats div{background:var(--paper);padding:18px}
.hero-stats .fig{display:block;font-size:25px;font-weight:600;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.hero-stats p{margin:7px 0 0;font-size:14.5px;color:var(--ink-2);line-height:1.45}

section{padding-block:clamp(50px,6.2vw,80px)}
.sec-head{display:flex;flex-direction:column;gap:13px;max-width:62ch}
.sec-head h2{font-size:clamp(25px,3.4vw,37px);line-height:1.13;letter-spacing:-.026em}
.sec-head p{margin:0;color:var(--ink-2);font-size:18px;font-weight:300}

.cycle-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--rule);margin-top:38px;border:1px solid var(--rule)}
.phase{background:var(--paper);padding:20px 16px 22px;position:relative}
.phase .dur{font-family:"IBM Plex Mono",monospace;font-size:11.5px;color:var(--patina);letter-spacing:.05em;font-weight:500}
.phase h3{font-size:15.5px;margin-top:9px}
.phase p{margin:8px 0 0;font-size:14.5px;color:var(--ink-2);line-height:1.5}
@media (max-width:900px){.cycle-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:460px){.cycle-grid{grid-template-columns:1fr}}

.case-tag{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.case-tag .n{font-family:"IBM Plex Mono",monospace;font-size:12px;font-weight:600;letter-spacing:.15em;color:var(--patina)}
.case-body{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(26px,4vw,54px);margin-top:34px;align-items:start}
@media (max-width:880px){.case-body{grid-template-columns:1fr}}
.prose{max-width:64ch}
.prose p{margin:0 0 17px}
.prose p:last-child{margin-bottom:0}
.prose h4{font-size:14.5px;margin:26px 0 9px;font-family:"Libre Franklin",sans-serif}

.rail{background:var(--surface);border:1px solid var(--rule);box-shadow:var(--shadow);padding:22px 20px 24px}
.rail .lbl{display:block;margin-bottom:14px}
.kv{display:flex;justify-content:space-between;gap:16px;padding-block:9px;border-bottom:1px dotted var(--rule-2);font-size:14.5px}
.kv:last-of-type{border-bottom:0}
.kv span:first-child{color:var(--ink-2)}
.kv .num{font-family:"IBM Plex Mono",monospace;font-size:13.5px;font-variant-numeric:tabular-nums;font-weight:500;text-align:right}
.pos{color:var(--patina)}
.neg{color:var(--warn)}

figure{margin:34px 0 0}
figure svg{display:block;width:100%;height:auto;max-width:100%}
figcaption{margin-top:12px;font-size:13.5px;color:var(--ink-3);font-family:"Libre Franklin",sans-serif;max-width:72ch}
.scroller{overflow-x:auto;border:1px solid var(--rule);background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:660px;font-size:14px}
th{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);text-align:left;font-weight:500;padding:13px 16px;border-bottom:1px solid var(--rule-2);white-space:nowrap}
td{padding:13px 16px;border-bottom:1px solid var(--rule);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
td.num{font-variant-numeric:tabular-nums;font-size:13px;white-space:nowrap}
.chip{display:inline-block;padding:3px 8px;border:1px solid var(--patina);color:var(--patina);background:var(--patina-soft);font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.07em}
.chip.alt{border-color:var(--rule-2);color:var(--ink-3);background:transparent}

.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:34px}
.tiles > div{background:var(--surface);padding:22px 20px 24px}
.tiles h3{font-size:15.5px;margin-bottom:8px}
.tiles p{margin:0;font-size:15px;color:var(--ink-2);line-height:1.5}

.principal{display:grid;grid-template-columns:auto 1fr;gap:clamp(22px,4vw,46px);margin-top:32px;align-items:start}
@media (max-width:700px){.principal{grid-template-columns:1fr}}
.portrait{width:186px;aspect-ratio:4/5;max-width:100%;border:1px solid var(--rule);background:repeating-linear-gradient(135deg,var(--surface-2) 0 7px,var(--surface) 7px 14px);display:flex;align-items:flex-end;padding:14px}
.portrait span{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.11em;color:var(--ink-3);text-transform:uppercase}
.cred{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:11px}
.cred li{position:relative;padding-left:20px;font-size:15.5px;color:var(--ink-2)}
.cred li::before{content:"";position:absolute;left:0;top:11px;width:11px;height:1px;background:var(--patina)}

.contact{background:var(--surface);border-top:1px solid var(--rule)}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(26px,5vw,60px);align-items:start}
@media (max-width:800px){.contact-grid{grid-template-columns:1fr}}
.btn{display:inline-block;margin-top:20px;padding:13px 24px;font-family:"Libre Franklin",sans-serif;font-size:14px;font-weight:600;color:var(--paper);background:var(--ink);text-decoration:none;border:1px solid var(--ink)}
.btn:hover,.btn:focus-visible{background:var(--patina);border-color:var(--patina);color:#fff}
.contact dl{margin:0;display:grid;gap:14px}
.contact dt{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3)}
.contact dd{margin:3px 0 0;font-size:16px;word-break:break-word}

footer{border-top:1px solid var(--rule);padding-block:28px 38px;font-size:13px;color:var(--ink-3)}
footer .disc{max-width:80ch;margin:0 0 16px;line-height:1.6}
footer .row{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-family:"Libre Franklin",sans-serif}
:focus-visible{outline:2px solid var(--patina);outline-offset:3px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---- specification band: inverted, always dark ---- */
.spec{
  --spec-bg:#021428; --spec-panel:#06203A; --spec-ink:#F1F6FA; --spec-mut:#8EA6BE; --spec-rule:#123A5A;
  background:var(--spec-bg); color:var(--spec-ink); border-block:1px solid var(--rule);
}
.spec .sec-head h2{letter-spacing:-.03em}
.spec-toggle{display:inline-flex;margin-top:28px;border:1px solid var(--spec-rule);background:var(--spec-panel)}
.spec-toggle button{
  appearance:none;border:0;background:transparent;color:var(--spec-mut);cursor:pointer;
  font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;
  padding:11px 20px;
}
.spec-toggle button.on{background:var(--patina);color:#02121F;font-weight:600}
.spec-stage{margin-top:26px;border:1px solid var(--spec-rule);background:var(--spec-panel);padding:clamp(20px,3.5vw,34px)}
.spec-poles{display:flex;justify-content:space-between;gap:24px;margin-bottom:20px}
.spec-poles .pole{max-width:30ch}
.spec-poles .pole.right{text-align:right}
.spec-poles p{margin:8px 0 0;font-size:14.5px;color:var(--spec-mut);line-height:1.45}
@media (max-width:620px){.spec-poles{flex-direction:column;gap:14px}.spec-poles .pole.right{text-align:left}}
#specRange{
  -webkit-appearance:none;appearance:none;width:100%;height:3px;background:var(--spec-rule);
  outline-offset:8px;margin:6px 0 0;cursor:pointer;
}
#specRange::-webkit-slider-thumb{
  -webkit-appearance:none;width:22px;height:22px;border-radius:50%;
  background:var(--patina);border:3px solid var(--spec-panel);box-shadow:0 0 0 1px var(--patina);
}
#specRange::-moz-range-thumb{
  width:22px;height:22px;border-radius:50%;background:var(--patina);
  border:3px solid var(--spec-panel);box-shadow:0 0 0 1px var(--patina);
}
.spec-ticks{display:flex;justify-content:space-between;margin-top:10px}
.spec-ticks span{
  font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.1em;color:var(--spec-mut);
}
.spec-ticks span.on{color:var(--patina)}
.spec-title{margin-top:26px;font-size:clamp(20px,2.6vw,26px);color:var(--spec-ink)}
.spec-note{margin:9px 0 0;max-width:66ch;color:var(--spec-mut);font-size:16px;line-height:1.55}
.spec-nums{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(168px,1fr));gap:1px;
  margin-top:26px;background:var(--spec-rule);border:1px solid var(--spec-rule);
}
.spec-nums > div{background:var(--spec-panel);padding:16px 16px 18px;display:flex;flex-direction:column;gap:6px}
.spec-nums .big{
  font-family:"Libre Franklin",sans-serif;font-size:17px;font-weight:600;color:var(--spec-ink);
  letter-spacing:-.01em;line-height:1.25;display:flex;align-items:baseline;gap:8px;
}
.spec-nums .arrow{font-size:12px;color:var(--patina);line-height:1}
.spec-nums .unit{font-family:"Libre Franklin",sans-serif;font-size:12px;color:var(--spec-mut)}
.spec-nums .hl{background:#04263B}
.spec-nums .hl .big{color:var(--patina)}
.spec figcaption{max-width:74ch}


/* ---- hero: full-bleed dark band with axonometric massing ---- */
.hero{
  --h-bg:#021428; --h-ink:#F4F8FB; --h-mut:#8EA6BE; --h-rule:#0E2B47;
  position:relative; overflow:hidden; isolation:isolate;
  background:var(--h-bg); color:var(--h-ink);
  padding-block:clamp(52px,8vw,104px) clamp(40px,5vw,64px);
  border-bottom:1px solid var(--rule);
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:var(--patina);opacity:.55;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:linear-gradient(100deg,var(--h-bg) 26%,rgba(2,20,40,.84) 48%,rgba(2,20,40,.16) 78%);
}
.hero-art{
  position:absolute; z-index:0; pointer-events:none;
  right:-14%; top:50%; transform:translateY(-52%);
  width:min(1020px,86vw); opacity:.46;
}
.hero-art svg{display:block;width:100%;height:auto}
.massing .grid line{stroke:#0C2743;stroke-width:1}
.massing path{fill:none;stroke:#2E5480;stroke-width:1.5;stroke-linejoin:round;vector-effect:non-scaling-stroke}
.massing .m-top{fill:#062038}
.massing .m-l{fill:#031224}
.massing .m-r{fill:#082441}
.massing .acc{stroke:var(--patina)}
.massing .m-top.acc{fill:rgba(53,168,190,.12)}
.massing .m-l.acc{fill:rgba(53,168,190,.06)}
.massing .m-r.acc{fill:rgba(53,168,190,.09)}
@media (min-width:900px){
  .hero-art{right:-5%;width:min(1060px,66vw);opacity:.58}
}
.hero-inner{position:relative;z-index:1}
.hero .lbl{color:var(--h-mut)}
.hero .eyebrow .taut{background:var(--patina);opacity:.9}
.hero h1{
  font-size:clamp(38px,7.4vw,86px); line-height:.99; letter-spacing:-.042em;
  max-width:15ch; margin-top:26px; color:var(--h-ink);
}
.hero .sub{color:var(--h-mut);max-width:50ch;margin-top:24px}
.hero-stats{background:var(--h-rule);border:1px solid var(--h-rule);margin-top:48px;max-width:960px}
.hero-stats div{background:rgba(2,20,40,.84);backdrop-filter:blur(2px)}
.hero-stats .fig{color:var(--h-ink)}
.hero-stats p{color:var(--h-mut)}
@media (prefers-reduced-motion:no-preference){
  .massing path{opacity:0;animation:rise .9s cubic-bezier(.22,.7,.3,1) forwards}
  .massing path:nth-child(3n+1){animation-delay:.05s}
  .massing path:nth-child(3n+2){animation-delay:.12s}
  .massing path:nth-child(3n+3){animation-delay:.19s}
  @keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
}


/* ---- added for multi-page ---- */
.page-hero{
  --h-bg:#021428; --h-ink:#F4F8FB; --h-mut:#8EA6BE; --h-rule:#0E2B47;
  background:var(--h-bg); color:var(--h-ink); position:relative; overflow:hidden;
  padding-block:clamp(44px,6.5vw,78px) clamp(34px,4.5vw,54px); border-bottom:1px solid var(--rule);
}
.page-hero::after{content:"";position:absolute;inset:auto 0 0 0;height:1px;background:var(--patina);opacity:.55}
.page-hero .lbl{color:var(--h-mut)}
.page-hero h1{font-size:clamp(30px,5vw,56px);line-height:1.04;letter-spacing:-.034em;max-width:20ch;margin-top:20px;color:var(--h-ink)}
.page-hero .sub{margin-top:20px;max-width:60ch;font-size:clamp(16.5px,1.9vw,19px);color:var(--h-mut);font-weight:300;line-height:1.55}
.crumb{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--h-mut);text-decoration:none}
.crumb:hover{color:var(--patina)}
.cases-index{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:36px}
.cases-index a{background:var(--paper);padding:22px 20px 24px;text-decoration:none;display:flex;flex-direction:column;gap:9px}
.cases-index a:hover{background:var(--surface)}
.cases-index .n{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.15em;color:var(--patina)}
.cases-index h3{font-size:17px;line-height:1.25}
.cases-index p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.45}
.cases-index .go{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;color:var(--ink-3);margin-top:auto;padding-top:6px}
.nextprev{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:44px;padding-top:22px;border-top:1px solid var(--rule);font-family:"Libre Franklin",sans-serif;font-size:14px}
.nextprev a{color:var(--patina);text-decoration:none;font-weight:500}
.nextprev a:hover{text-decoration:underline}
.pill{display:inline-block;padding:4px 10px;border:1px solid var(--rule-2);color:var(--ink-3);font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.09em;text-transform:uppercase}
.callout{border-left:2px solid var(--patina);padding:4px 0 4px 18px;margin:24px 0;color:var(--ink-2);font-size:16px}
.stack{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:30px}
.stack > div{background:var(--surface);padding:18px 20px 20px;display:grid;grid-template-columns:150px 1fr;gap:18px}
.stack .k{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--patina);padding-top:3px}
.stack .v{font-size:15.5px;color:var(--ink-2);line-height:1.5}
.stack .v b{color:var(--ink);font-weight:600;font-family:"Libre Franklin",sans-serif;font-size:15px;display:block;margin-bottom:4px}
@media (max-width:620px){.stack > div{grid-template-columns:1fr;gap:8px}}


/* ---- full-bleed hero image ---- */
.hero{position:relative;overflow:hidden;isolation:isolate;
  --h-bg:#021428; --h-ink:#F4F8FB; --h-mut:#8EA6BE; --h-rule:#0E2B47;
  background:var(--h-bg); color:var(--h-ink);
  min-height:min(86vh,780px); display:flex; align-items:flex-end;
  padding-block:clamp(90px,14vw,190px) clamp(34px,4.5vw,56px);
  border-bottom:1px solid var(--rule);
}
.hero-art{position:absolute;inset:0;z-index:0;width:100%;height:100%;opacity:1;transform:none;right:auto;top:auto}
.hero-art .heroart{width:100%;height:100%;display:block}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(2,20,40,.92) 0%,rgba(2,20,40,.22) 26%,rgba(2,20,40,.04) 45%,rgba(2,20,40,.62) 76%,rgba(2,20,40,.96) 100%),
    linear-gradient(90deg,rgba(2,20,40,.88) 0%,rgba(2,20,40,.42) 40%,rgba(2,20,40,.04) 72%);
}
.hero::after{content:"";position:absolute;inset:auto 0 0 0;z-index:2;height:2px;background:var(--patina);opacity:.85}
.hero-inner{position:relative;z-index:3;width:100%}
.hero h1{font-size:clamp(38px,7.2vw,88px);line-height:.98;letter-spacing:-.042em;max-width:15ch;margin-top:26px;color:var(--h-ink);
  text-shadow:0 2px 40px rgba(2,10,20,.55)}
.hero .sub{color:#C6D6E4;max-width:52ch;margin-top:22px}
.hero-stats{background:rgba(14,43,71,.9);border:1px solid rgba(14,43,71,.9);margin-top:44px;max-width:1000px}
.hero-stats div{background:rgba(2,18,35,.82);backdrop-filter:blur(3px)}
.hero-stats .fig{color:var(--h-ink)}
.hero-stats p{color:#9FB6CA}
.hero .lbl{color:#9FB6CA}
.massing .grid line{stroke:#072238;stroke-width:1}
.massing path{fill:none;stroke:#2E5480;stroke-width:1.4;stroke-linejoin:round;vector-effect:non-scaling-stroke}
.heroart .grid line{stroke:#072A46;stroke-width:1}
.heroart path.m-top,.heroart path.m-l,.heroart path.m-r{stroke:#3A6B9E;stroke-width:1.6;stroke-linejoin:round}
.heroart path.m-top{fill:#062038}
.heroart path.m-l{fill:#031224}
.heroart path.m-r{fill:#082441}
.heroart path.acc{stroke:#35A8BE}
.heroart path.m-top.acc{fill:rgba(53,168,190,.14)}
.heroart path.m-l.acc{fill:rgba(53,168,190,.07)}
.heroart path.m-r.acc{fill:rgba(53,168,190,.10)}
.brandmark{height:30px;width:auto;display:block}
@media (max-width:620px){ .hero{min-height:auto;padding-block:64px 36px} .hero h1{font-size:clamp(32px,9vw,46px)} }
@media (prefers-reduced-motion:no-preference){
  .hero-inner{animation:heroIn .7s cubic-bezier(.22,.7,.3,1) both}
  @keyframes heroIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
}

/* ---- finish detail imagery ---- */
.detail-band{position:relative;overflow:hidden;background:#0B1520;border-block:1px solid var(--rule)}
.detail-band img{display:block;width:100%;height:clamp(340px,52vw,620px);object-fit:cover;object-position:center}
.detail-band .cap{
  position:absolute;left:0;right:0;bottom:0;padding:clamp(22px,4vw,44px) 0 clamp(20px,3vw,34px);
  background:linear-gradient(180deg,rgba(2,16,28,0) 0%,rgba(2,16,28,.62) 42%,rgba(2,16,28,.93) 100%);
}
.detail-band .cap .wrap{display:flex;flex-direction:column;gap:10px}
.detail-band .cap .lbl{color:#B9C9D6}
.detail-band .cap h2{color:#F6F8FA;font-size:clamp(23px,3.2vw,36px);line-height:1.12;letter-spacing:-.026em;max-width:20ch}
.detail-band .cap p{margin:0;color:#C6D4DF;font-size:clamp(15.5px,1.7vw,17.5px);max-width:58ch;line-height:1.5}
.detail-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:36px}
.detail-strip figure{margin:0;background:var(--surface);position:relative}
.detail-strip img{display:block;width:100%;height:clamp(200px,24vw,300px);object-fit:cover}
.detail-strip figcaption{
  margin:0;padding:13px 16px 15px;font-family:"IBM Plex Mono",monospace;font-size:10.5px;
  letter-spacing:.11em;text-transform:uppercase;color:var(--ink-3);
}
@media (max-width:720px){.detail-strip{grid-template-columns:1fr}}
.page-detail{border-bottom:1px solid var(--rule);background:#0B1520}
.page-detail img{display:block;width:100%;height:clamp(180px,26vw,320px);object-fit:cover}

/* ================= mobile navigation ================= */
.mnav{display:none;position:relative}
.mnav>summary{
  list-style:none;cursor:pointer;width:42px;height:38px;
  display:flex;flex-direction:column;justify-content:center;gap:5px;
  padding:0 8px;border:1px solid var(--rule);background:var(--surface);
}
.mnav>summary::-webkit-details-marker{display:none}
.mnav>summary span{display:block;height:1.5px;background:var(--ink);width:100%}
.mnav[open]>summary{border-color:var(--patina)}
.mnav-panel{
  position:absolute;right:0;top:calc(100% + 9px);z-index:60;min-width:230px;
  background:var(--surface);border:1px solid var(--rule);box-shadow:var(--shadow);
  display:flex;flex-direction:column;
}
.mnav-panel a{
  padding:14px 18px;text-decoration:none;color:var(--ink);
  font-family:"Libre Franklin",sans-serif;font-size:15px;font-weight:500;
  border-bottom:1px solid var(--rule);
}
.mnav-panel a:last-child{border-bottom:0}
.mnav-panel a:active,.mnav-panel a:focus-visible{background:var(--patina-soft);color:var(--patina)}
@media (max-width:780px){ .mnav{display:block} }

/* ================= hero photographic base ================= */
.hero-photo{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-photo img{width:100%;height:100%;object-fit:cover;object-position:60% 50%;display:block;opacity:.42}
.hero-art{z-index:1}
.hero::before{z-index:2}
.hero-inner{z-index:3}

/* ================= mobile optimisation ================= */
@media (max-width:780px){
  body{font-size:16.5px}
  .wrap{padding-inline:18px}
  .top .wrap{padding-block:11px}
  .wordmark{font-size:14px}
  .mark svg{width:26px;height:26px;flex:0 0 26px}

  .hero{min-height:auto;padding-block:56px 34px}
  .hero h1{font-size:clamp(31px,8.4vw,44px);line-height:1.04;letter-spacing:-.032em;max-width:none;margin-top:20px}
  .hero .sub{font-size:16.5px;margin-top:18px}
  .hero-photo img{opacity:.34;object-position:65% 50%}
  .hero-art{opacity:.34!important;right:auto!important;width:100%!important}
  .hero-stats{grid-template-columns:1fr 1fr;margin-top:30px}
  .hero-stats div{padding:14px}
  .hero-stats .fig{font-size:15px;letter-spacing:0}
  .hero-stats p{font-size:12.5px;line-height:1.4}
  .eyebrow{gap:10px}
  .eyebrow .lbl{font-size:9.5px;letter-spacing:.1em}

  section{padding-block:44px}
  .sec-head h2{font-size:clamp(23px,6.4vw,30px)}
  .sec-head p{font-size:16.5px}

  .detail-band img{height:clamp(300px,74vw,400px)}
  .detail-band .cap{padding:28px 0 22px;background:linear-gradient(180deg,rgba(2,16,28,0) 0%,rgba(2,16,28,.72) 34%,rgba(2,16,28,.96) 100%)}
  .detail-band .cap h2{font-size:23px;max-width:none}
  .detail-band .cap p{font-size:15px}
  .detail-strip img{height:230px}
  .page-detail img{height:180px}

  .case-body{gap:26px}
  .rail{padding:18px 16px 20px}
  .kv{font-size:14px;gap:10px}
  .kv .num{font-size:12.5px}

  figure{margin-top:26px}
  figcaption{font-size:13px}
  /* charts keep their detail by scrolling rather than shrinking type */
  figure>svg{min-width:640px}
  figure:has(>svg){overflow-x:auto;-webkit-overflow-scrolling:touch}

  .spec-stage{padding:18px 16px 22px}
  .spec-nums{grid-template-columns:1fr 1fr}
  .spec-nums .big{font-size:15.5px}
  .spec-poles{flex-direction:column;gap:12px}
  .spec-poles .pole.right{text-align:left}
  .spec-toggle button{padding:10px 16px;font-size:11px}
  #specRange{height:4px}
  #specRange::-webkit-slider-thumb{width:26px;height:26px}
  #specRange::-moz-range-thumb{width:26px;height:26px}
  .spec-ticks span{font-size:10px}

  .stack > div{grid-template-columns:1fr;gap:6px;padding:16px 16px 18px}
  .cred li{font-size:15px}
  .portrait{width:150px}
  .tiles > div{padding:18px 16px 20px}
  .contact dd{font-size:15px}
  .btn{padding:14px 22px;width:100%;text-align:center}
  footer .row{flex-direction:column;gap:6px}
  .nextprev{font-size:13.5px;gap:12px}
  table{min-width:600px}
  th,td{padding:11px 13px}
}
@media (max-width:420px){
  .hero-stats{grid-template-columns:1fr}
  .spec-nums{grid-template-columns:1fr}
  .detail-band .cap h2{font-size:21px}
}

/* band caption sits below the image on phones instead of over it */
@media (max-width:780px){
  .detail-band{display:flex;flex-direction:column;background:#04182A}
  .detail-band img{height:clamp(230px,56vw,300px)}
  .detail-band .cap{
    position:static;background:#04182A;padding:22px 0 26px;
  }
  .detail-band .cap h2{font-size:22px;line-height:1.16}
  .detail-band .cap p{font-size:15.5px;line-height:1.5;color:#BFD0DC}
}

/* scrollable charts get a visible affordance on phones */
@media (max-width:780px){
  figure:has(>svg){position:relative;padding-right:2px}
  figure:has(>svg)::after{
    content:"Swipe the chart sideways to see the full scale";
    display:block;margin-top:9px;
    font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.08em;
    text-transform:uppercase;color:var(--ink-3);
  }
  .scroller{position:relative}
  .scroller::after{content:none}
  figure:has(.scroller)::after{content:"Swipe the table sideways to see every column"}
}