/* Athelreign Ventures — brand: Navy #101A2E, Dark Gold #8E6F3A, Ink #14151A, Paper #F3F1EC, Ivory #EFEAE0, Stone #6E6A5E
   Type: EB Garamond (display) + Inter (text). Brass is used for rules and marks only, never for small text.
   Layout: dark single page with a floating navigation bar, centred hero, capability carousel and approach accordion. */

@font-face{font-family:"EB Garamond";font-style:normal;font-weight:400;font-display:swap;src:url("../assets/fonts/eb-garamond-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"EB Garamond";font-style:normal;font-weight:500;font-display:swap;src:url("../assets/fonts/eb-garamond-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Inter";font-style:normal;font-weight:400;font-display:swap;src:url("../assets/fonts/inter-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Inter";font-style:normal;font-weight:500;font-display:swap;src:url("../assets/fonts/inter-latin-500-normal.woff2") format("woff2")}

:root{
  --navy:#101A2E; --deep:#0B1322; --brass:#8E6F3A; --ink:#14151A; --paper:#F3F1EC; --ivory:#EFEAE0; --stone:#6E6A5E;
  --text:rgba(239,234,224,.76); --dim:rgba(239,234,224,.6); --hair:rgba(239,234,224,.12); --hair-2:rgba(239,234,224,.2);
  --serif:"EB Garamond",Garamond,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --pad:clamp(20px,5vw,64px); --max:1240px; --r:20px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:104px;-webkit-text-size-adjust:100%;text-size-adjust:100%;background:var(--deep)}
body{margin:0;font:400 1rem/1.75 var(--sans);color:var(--text);background:var(--deep);overflow-x:clip;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body.nav-open{overflow:hidden}
img,svg{display:block}
img{max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:500;margin:0;line-height:1.15;letter-spacing:-.005em;color:var(--ivory)}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:var(--ivory);color:var(--deep)}
:focus-visible{outline:2px solid var(--brass);outline-offset:4px}

.wrap{width:100%;max-width:calc(var(--max) + 2*var(--pad));margin-inline:auto;padding-inline:max(var(--pad),env(safe-area-inset-left)) max(var(--pad),env(safe-area-inset-right))}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ivory);color:var(--ink);padding:10px 16px;text-decoration:none;font-size:.875rem}
.skip:focus{top:12px}

/* ---------- shared pieces ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:15px 28px;border-radius:999px;background:var(--ivory);color:var(--deep);font:500 .8125rem/1 var(--sans);letter-spacing:.08em;text-decoration:none;white-space:nowrap;transition:background-color .25s ease,transform .25s ease}
.btn svg{width:18px;height:18px;flex:none;transition:transform .25s ease}
.btn:hover,.btn:focus-visible{background:#fff}
.btn:hover svg,.btn:focus-visible svg{transform:translateX(4px)}
.btn-lg{padding:19px 34px;font-size:.9375rem;letter-spacing:.04em}

.eyebrow{display:flex;align-items:center;gap:14px;margin:0 0 20px;font-size:.6875rem;font-weight:500;letter-spacing:.26em;line-height:1.4;text-transform:uppercase;color:var(--text)}
.eyebrow::before{content:"";flex:none;width:32px;height:1px;background:var(--brass)}
.tag{display:inline-block;padding:7px 14px;border:1px solid var(--hair-2);border-radius:999px;font-size:.625rem;font-weight:500;letter-spacing:.22em;line-height:1;text-transform:uppercase;color:var(--text);white-space:nowrap}
.num{font-family:var(--serif);font-size:1.0625rem;line-height:1;letter-spacing:.06em;color:var(--dim);font-variant-numeric:lining-nums tabular-nums}

/* ---------- header ---------- */
.site-header{position:fixed;inset:16px 0 auto 0;z-index:50;padding-inline:16px;pointer-events:none}
.bar{position:relative;z-index:0;pointer-events:auto;display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;max-width:1060px;margin-inline:auto;padding:0 9px 0 22px}
.bar::before{content:"";position:absolute;inset:0;z-index:-1;border:1px solid var(--hair);border-radius:999px;background:rgba(16,26,46,.78);-webkit-backdrop-filter:blur(16px) saturate(1.2);backdrop-filter:blur(16px) saturate(1.2);box-shadow:0 14px 44px rgba(0,0,0,.38)}
.brand{position:relative;z-index:3;display:flex;align-items:center;gap:12px;color:var(--ivory);text-decoration:none}
.brand svg{width:34px;height:34px;flex:none}
.brand-name{display:block;font-family:var(--serif);font-weight:500;font-size:1.12rem;letter-spacing:.17em;line-height:1}
.brand-sub{display:block;margin-top:6px;font-size:.5625rem;font-weight:500;letter-spacing:.42em;line-height:1;color:var(--brass)}

.nav ul{display:flex;align-items:center;gap:clamp(18px,2.6vw,36px)}
.nav a:not(.btn){display:inline-block;padding:10px 0;font-size:.6875rem;font-weight:500;letter-spacing:.18em;text-transform:uppercase;text-decoration:none;color:var(--text);background:linear-gradient(var(--brass),var(--brass)) left bottom/0 1px no-repeat;transition:background-size .3s ease,color .2s ease}
.nav a:not(.btn):hover,.nav a:not(.btn):focus-visible{color:#fff;background-size:100% 1px}
.nav .btn{padding:15px 24px;font-size:.6875rem;letter-spacing:.18em;text-transform:uppercase}
.nav-toggle{display:none}

/* ---------- hero ---------- */
.hero{position:relative;isolation:isolate;overflow:hidden;display:flex;flex-direction:column;min-height:clamp(640px,100vh,980px);min-height:clamp(640px,100svh,980px);padding:112px 0 calc(26px + env(safe-area-inset-bottom));text-align:center;
  background:radial-gradient(ellipse 62% 54% at 50% 46%,#17243f 0%,rgba(11,19,34,0) 72%) var(--deep)}
.hero::before{content:"";position:absolute;left:50%;top:47%;z-index:-2;width:min(160vw,1560px);aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;pointer-events:none;
  background:repeating-radial-gradient(circle at center,transparent 0 71px,rgba(142,111,58,.26) 71px 72px);
  -webkit-mask-image:radial-gradient(circle at center,transparent 18%,#000 38%,transparent 60%);mask-image:radial-gradient(circle at center,transparent 18%,#000 38%,transparent 60%)}
.hero-canvas{position:absolute;inset:0;z-index:-1;width:100%;height:100%;pointer-events:none}
.hero-copy{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding-block:28px}
.hero h1{font-size:clamp(2.3rem,5.6vw,4.9rem);line-height:1.06;max-width:21ch;letter-spacing:-.012em;text-wrap:balance}
.hero p{max-width:36rem;margin-top:26px;font-size:clamp(1rem,1.25vw,1.15rem);text-wrap:pretty}

.marquee{display:flex;overflow:hidden;width:100%;max-width:1180px;margin-inline:auto;padding-block:16px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee ul{flex:none;display:flex;align-items:center;justify-content:space-around;min-width:100%;animation:marquee 46s linear infinite}
.marquee li{display:flex;align-items:center;white-space:nowrap;font-size:.75rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase}
.marquee li::after{content:"";width:1px;height:14px;margin-inline:clamp(22px,3vw,40px);background:var(--brass)}
@media (hover:hover){.marquee:hover ul{animation-play-state:paused}}
@keyframes marquee{to{transform:translateX(-100%)}}

.scroll-cue{display:inline-flex;flex-direction:column;align-items:center;gap:8px;align-self:center;margin-top:14px;padding:8px 14px;font-size:.6875rem;font-weight:500;letter-spacing:.26em;text-indent:.26em;text-transform:uppercase;text-decoration:none;color:var(--text);transition:color .2s ease}
.scroll-cue svg{width:18px;height:18px;animation:nudge 2.6s ease-in-out infinite}
.scroll-cue:hover,.scroll-cue:focus-visible{color:#fff}
@keyframes nudge{0%,100%{transform:translateY(0)}50%{transform:translateY(5px)}}

/* ---------- sections ---------- */
.section{position:relative;padding-block:clamp(72px,10vw,144px)}
.section::before{content:"";position:absolute;top:0;left:50%;width:min(72%,880px);height:1px;transform:translateX(-50%);background:linear-gradient(90deg,transparent,rgba(142,111,58,.7),transparent)}
h2{font-size:clamp(2rem,4vw,3.4rem);line-height:1.08}
.sec-head{max-width:44rem;margin-bottom:clamp(36px,5vw,64px)}
.sec-lede{margin-top:20px;max-width:38rem;font-size:clamp(1rem,1.2vw,1.0625rem)}

/* capabilities carousel */
.car-track{display:flex;gap:24px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scrollbar-width:none;border-radius:var(--r)}
.car-track::-webkit-scrollbar{display:none}
.car-track:focus-visible{outline-offset:6px}
.slide{flex:0 0 100%;scroll-snap-align:start;display:grid;grid-template-columns:minmax(0,11fr) minmax(0,9fr);align-items:center;overflow:hidden;border:1px solid var(--hair);border-radius:var(--r);background:var(--navy)}
.slide figure{margin:0;align-self:stretch;background:var(--deep)}
.slide img{width:100%;height:100%;aspect-ratio:3/2;object-fit:cover}
.slide-copy{padding:clamp(28px,4.4vw,68px)}
.meta{display:flex;align-items:center;gap:16px;margin:0 0 clamp(18px,2.4vw,30px)}
.slide h3{font-size:clamp(1.6rem,2.7vw,2.4rem);line-height:1.12;margin-bottom:16px;text-wrap:balance}
.slide-copy p:last-child{max-width:30rem}

.car-nav{display:flex;align-items:center;justify-content:center;gap:clamp(16px,3vw,28px);margin-top:clamp(24px,3vw,36px)}
.car-nav[hidden]{display:none}
.car-btn{display:grid;place-items:center;width:48px;height:48px;padding:0;border:1px solid var(--hair-2);border-radius:50%;background:none;color:var(--ivory);cursor:pointer;transition:border-color .25s ease,background-color .25s ease}
.car-btn svg{width:20px;height:20px}
.car-prev svg{transform:rotate(180deg)}
.car-btn:hover,.car-btn:focus-visible{border-color:var(--brass);background:rgba(239,234,224,.05)}
.car-dots{display:flex;align-items:center}
.car-dot{display:grid;place-items:center;width:26px;height:44px;padding:0;border:0;background:none;cursor:pointer}
.car-dot::before{content:"";width:6px;height:6px;border-radius:999px;background:rgba(239,234,224,.3);transition:width .3s ease,background-color .3s ease}
.car-dot[aria-current="true"]{width:44px}
.car-dot[aria-current="true"]::before{width:28px;height:4px;background:var(--brass)}

/* approach accordion */
.steps{--sx:clamp(20px,3vw,36px);--sg:clamp(16px,2.6vw,32px);--nw:2rem;overflow:hidden;border:1px solid var(--hair);border-radius:var(--r);background:rgba(16,26,46,.5)}
.step+.step{border-top:1px solid var(--hair)}
.step{transition:background-color .3s ease}
.step[open]{background:var(--navy)}
.step summary{display:grid;grid-template-columns:var(--nw) minmax(0,1fr) auto auto;align-items:center;gap:var(--sg);padding:clamp(20px,2.4vw,28px) var(--sx);cursor:pointer;list-style:none}
.step summary::-webkit-details-marker{display:none}
.step summary:focus-visible{outline-offset:-4px;border-radius:var(--r)}
.step h3{font-size:clamp(1.25rem,2vw,1.65rem)}
.chev{display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--hair-2);border-radius:50%;color:var(--ivory);transition:border-color .25s ease,transform .35s ease}
.chev svg{width:18px;height:18px}
.step[open] .chev{transform:rotate(180deg);border-color:var(--brass)}
.step summary:hover .chev{border-color:var(--brass)}
.step>p{max-width:46rem;margin:0;padding:0 var(--sx) clamp(24px,2.8vw,34px) calc(var(--sx) + var(--nw) + var(--sg))}
@supports (interpolate-size:allow-keywords){
  .steps{interpolate-size:allow-keywords}
  .step::details-content{block-size:0;overflow:clip;transition:block-size .4s ease,content-visibility .4s allow-discrete}
  .step[open]::details-content{block-size:auto}
}

.banner{display:flex;align-items:center;justify-content:space-between;gap:20px 32px;flex-wrap:wrap;margin-top:24px;padding:clamp(22px,2.8vw,32px) clamp(22px,3vw,40px);border:1px solid var(--hair);border-radius:var(--r);background:var(--navy)}
.banner p{margin:0;font-family:var(--serif);font-size:clamp(1.25rem,2vw,1.6rem);line-height:1.3;color:var(--ivory)}

/* about */
.split{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:clamp(32px,6vw,104px);align-items:center}
.about-copy h2{margin-bottom:clamp(22px,3vw,34px)}
.about-copy p:not(.eyebrow){max-width:34rem}
.frame{position:relative;isolation:isolate;max-width:500px;width:100%;justify-self:end}
.frame::before{content:"";position:absolute;inset:16px -16px -16px 16px;z-index:-1;border:1px solid var(--brass);border-radius:var(--r);opacity:.7}
.frame img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--r);background:var(--navy)}

/* leadership */
.people{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.person{display:flex;align-items:center;gap:clamp(18px,2.4vw,28px);padding:clamp(24px,3vw,40px);border:1px solid var(--hair);border-radius:var(--r);background:var(--navy)}
.mono{flex:none;display:grid;place-items:center;width:76px;height:76px;border:1px solid var(--brass);border-radius:50%;font-family:var(--serif);font-size:1.5rem;letter-spacing:.08em;line-height:1;padding-left:.08em;color:var(--ivory)}
.person h3{font-size:clamp(1.35rem,2vw,1.7rem)}
.role{margin:10px 0 0;font-size:.6875rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--dim)}

/* contact */
.contact{isolation:isolate;overflow:hidden;text-align:center;padding-block:clamp(96px,13vw,184px);background:radial-gradient(ellipse 58% 62% at 50% 52%,#152139 0%,rgba(11,19,34,0) 72%)}
.contact .eyebrow::after{content:"";flex:none;width:32px;height:1px;background:var(--brass)}
.contact::after{content:"";position:absolute;left:50%;top:52%;z-index:-1;width:min(140vw,940px);aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;pointer-events:none;
  background:repeating-radial-gradient(circle at center,transparent 0 63px,rgba(142,111,58,.24) 63px 64px);
  -webkit-mask-image:radial-gradient(circle closest-side at center,transparent 28%,#000 50%,transparent 74%);mask-image:radial-gradient(circle closest-side at center,transparent 28%,#000 50%,transparent 74%)}
.contact-inner{display:flex;flex-direction:column;align-items:center}
.contact h2{font-size:clamp(2.1rem,4.8vw,4rem);max-width:16ch;text-wrap:balance}
.contact .sec-lede{margin-bottom:clamp(30px,4vw,44px)}

/* footer */
.site-footer{position:relative;font-size:.875rem;padding:clamp(48px,6vw,72px) 0 calc(32px + env(safe-area-inset-bottom));border-top:1px solid var(--hair)}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1.4fr);gap:40px clamp(32px,6vw,96px);padding-bottom:clamp(36px,5vw,56px)}
.foot-mark{display:flex;align-items:center;gap:14px;margin-bottom:14px;color:var(--ivory);font-family:var(--serif);font-size:1.15rem;line-height:1.3;letter-spacing:.03em}
.foot-mark svg{width:34px;height:34px;flex:none}
.foot-brand p{color:var(--dim)}
.foot-col h2{margin-bottom:18px;font:500 .6875rem/1.4 var(--sans);letter-spacing:.26em;text-transform:uppercase;color:var(--dim)}
.foot-col li+li{margin-top:8px}
.foot-col a{text-decoration:none;transition:color .2s ease}
.foot-col a:hover,.foot-col a:focus-visible{color:#fff;text-decoration:underline;text-underline-offset:5px;text-decoration-color:var(--brass)}
.foot-ids{margin:0;display:grid;gap:8px}
.foot-ids div{display:flex;gap:14px}
.foot-ids dt{flex:none;width:3.6rem;padding-top:.3em;font-size:.6875rem;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.foot-ids dd{margin:0;min-width:0;overflow-wrap:anywhere;font-variant-numeric:tabular-nums;letter-spacing:.03em}
.foot-bottom{position:relative;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 24px;padding-top:24px;font-size:.8125rem;color:var(--dim)}
.foot-bottom::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(142,111,58,.7),rgba(239,234,224,.12) 60%,transparent)}
.foot-bottom p{margin:0}
.foot-bottom a{text-decoration:none}
.foot-bottom a:hover,.foot-bottom a:focus-visible{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--brass)}

/* reveal (class added by JS only, so content is never hidden without it) */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .9s ease,transform .9s cubic-bezier(.2,.6,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- mobile / nav ---------- */
@media (max-width:859px){
  html{scroll-padding-top:88px}
  .site-header{inset:12px 0 auto 0;padding-inline:12px}
  .bar{height:56px;padding:0 6px 0 16px}
  .brand svg{width:30px;height:30px}
  .brand-name{font-size:1rem}
  .brand-sub{font-size:.5rem;margin-top:5px}

  .nav-toggle{position:relative;z-index:3;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border:0;border-radius:50%;background:none;color:var(--ivory);cursor:pointer}
  .nav-toggle .bars{position:relative;display:block;width:22px;height:10px}
  .nav-toggle .bars::before,.nav-toggle .bars::after{content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;transition:transform .3s ease,top .3s ease}
  .nav-toggle .bars::before{top:0}
  .nav-toggle .bars::after{top:8.5px}
  .nav-toggle[aria-expanded="true"] .bars::before{top:4px;transform:rotate(45deg)}
  .nav-toggle[aria-expanded="true"] .bars::after{top:4px;transform:rotate(-45deg)}

  .nav{position:fixed;inset:0;z-index:2;height:100vh;height:100dvh;display:flex;flex-direction:column;justify-content:center;padding:96px max(var(--pad),env(safe-area-inset-left)) 48px;background:var(--deep);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility 0s linear .3s}
  .nav.is-open{opacity:1;visibility:visible;transition:opacity .3s ease}
  .nav ul{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav li{border-bottom:1px solid var(--hair)}
  .nav li:first-child{border-top:1px solid var(--hair)}
  .nav a:not(.btn),.nav .btn{display:block;padding:18px 0;border-radius:0;background:none;font-family:var(--serif);font-size:clamp(1.8rem,7.6vw,2.5rem);font-weight:400;line-height:1.2;letter-spacing:0;text-align:left;text-transform:none;color:var(--ivory)}

  .hero{padding-top:92px}
  .slide{grid-template-columns:minmax(0,1fr);align-items:start}
  .slide figure{align-self:auto}
  .slide img{height:auto}
  .split{grid-template-columns:minmax(0,1fr);gap:44px}
  .frame{justify-self:start;max-width:440px;width:calc(100% - 16px)}
  .foot-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:639px){
  :root{--r:16px}
  .car-track{gap:16px}
  .steps{--nw:1.75rem}
  .step summary{grid-template-columns:var(--nw) minmax(0,1fr) auto}
  .step .tag{display:none}
  .chev{width:36px;height:36px}
  .banner{flex-direction:column;align-items:flex-start}
  .people{grid-template-columns:minmax(0,1fr);gap:16px}
  .mono{width:64px;height:64px;font-size:1.3rem}
  .frame::before{inset:12px -12px -12px 12px}
  .frame{width:calc(100% - 12px)}
  .btn-lg{padding:18px 26px}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .foot-bottom{flex-direction:column}
}

/* ---------- no-JS fallbacks ---------- */
.no-js .nav-toggle{display:none}
.no-js .car-track{flex-direction:column;overflow:visible}
.no-js .slide{flex:none}
@media (max-width:859px){
  .no-js .site-header{position:absolute}
  .no-js .bar{height:auto;flex-wrap:wrap;gap:8px 20px;padding:14px 20px}
  .no-js .bar::before{border-radius:var(--r)}
  .no-js .nav{position:static;height:auto;padding:0;display:block;opacity:1;visibility:visible;background:none}
  .no-js .nav ul{flex-direction:row;flex-wrap:wrap;gap:0 20px}
  .no-js .nav li,.no-js .nav li:first-child{border:0}
  .no-js .nav a:not(.btn),.no-js .nav .btn{padding:6px 0;font:500 .6875rem/1.4 var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--text)}
  .no-js .hero{padding-top:176px}
}

/* ---------- motion & print ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;animation-iteration-count:1 !important}
  .reveal{opacity:1;transform:none}
  .marquee{-webkit-mask-image:none;mask-image:none;padding-inline:var(--pad)}
  .marquee ul{flex:1;min-width:0;flex-wrap:wrap;justify-content:center;gap:10px 32px;animation:none}
  .marquee ul[aria-hidden="true"]{display:none}
  .marquee li{white-space:normal}
  .marquee li::after{display:none}
  .scroll-cue svg{animation:none}
}
@media print{
  html,body{background:#fff;color:#000}
  h1,h2,h3,.banner p,.mono,.foot-mark{color:#000}
  .site-header,.skip,.hero-canvas,.car-nav,.scroll-cue,.marquee ul[aria-hidden="true"]{display:none}
  .hero,.contact{min-height:0;background:none}
  .hero::before,.contact::after,.section::before{display:none}
  .car-track{flex-direction:column;overflow:visible}
  .slide,.person,.banner,.steps,.step[open]{background:none}
  .reveal{opacity:1;transform:none}
}