:root{--ink:#1E1530;--ink-2:#2A1F42;--pearl:#F4F0FB;--muted:#B9AECF;--lav:#C9B8F2;--lav-deep:#8E74D8;--champ:#E9C98B;--line:rgba(244,240,251,.14);--serif:'Newsreader',Georgia,serif;--sans:'Albert Sans',system-ui,-apple-system,sans-serif;--ease:cubic-bezier(.2,.7,.1,1)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:var(--pearl);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0;padding:0}
:focus-visible{outline:2px solid var(--lav);outline-offset:3px;border-radius:6px}
.wrap{width:min(1240px,calc(100% - 40px));margin-inline:auto}
h1,h2,h3{font-family:var(--serif);font-weight:400;margin:0;line-height:1.05;letter-spacing:-.01em}
.js [data-reveal]{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js [data-reveal].in{opacity:1;transform:none}

/* header (matches the portfolio) */
.top{position:sticky;top:0;z-index:50;background:rgba(30,21,48,.82);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.top-in{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.mark{display:flex;align-items:center;gap:10px;text-decoration:none}
.mark svg{width:22px;height:22px}
.mark b{font-family:var(--serif);font-weight:500;font-size:22px;letter-spacing:.04em}
.mark span{font-size:13px;color:var(--muted);padding-left:12px;border-left:1px solid var(--line)}
.nav{display:flex;gap:26px;font-size:15px}
.nav a{text-decoration:none;color:var(--muted);transition:color .3s}
.nav a:hover,.nav a[aria-current]{color:var(--pearl)}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;padding:3px}
.lang button{font-size:12px;font-weight:700;padding:6px 11px;border-radius:999px;color:var(--muted)}
.lang button[aria-pressed=true]{background:var(--lav);color:var(--ink)}
@media (max-width:720px){.nav{display:none}.mark span{display:none}}

/* hero */
.chero{position:relative;overflow:hidden;padding:clamp(40px,6vw,80px) 0 clamp(50px,7vw,90px);border-bottom:1px solid var(--line)}
.glowb{position:absolute;inset:-20% -10% auto auto;width:70vw;height:70vw;border-radius:50%;background:radial-gradient(closest-side,color-mix(in srgb,var(--acc) 38%,transparent),transparent);filter:blur(30px);opacity:.6;pointer-events:none;animation:drift 18s ease-in-out infinite alternate}
@keyframes drift{to{transform:translate(-6vw,4vh) scale(1.08)}}
.chero-in{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(30px,5vw,70px);align-items:center;position:relative}
@media (max-width:900px){.chero-in{grid-template-columns:1fr}}
.crumbs{display:flex;gap:10px;font-size:13px;color:var(--muted);margin-bottom:26px;flex-wrap:wrap}
.crumbs a{text-decoration:none;color:var(--muted)}.crumbs a:hover{color:var(--pearl)}
.crumbs i{font-style:normal;opacity:.5}
.kind{display:inline-block;font-size:13px;font-weight:600;color:var(--acc);letter-spacing:.02em}
.chero h1{font-size:clamp(52px,6.4vw,96px);margin:10px 0 14px}
.chero h1 em{font-style:italic;color:var(--lav)}
.big{font-family:var(--serif);font-style:italic;font-size:clamp(24px,2.4vw,34px);line-height:1.2;color:var(--pearl);margin:0 0 16px}
.lede{font-size:17px;color:var(--muted);max-width:52ch;margin:0}
.meta{display:flex;gap:30px;margin:26px 0 0;flex-wrap:wrap}
.meta div{display:flex;flex-direction:column}
.meta dt{font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);font-weight:700}
.meta dd{margin:4px 0 0;font-size:15px}
.ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-flex;align-items:center;gap:8px;height:52px;padding:0 24px;border-radius:999px;font-weight:600;font-size:15px;text-decoration:none;transition:transform .4s var(--ease),background .3s,border-color .3s}
.btn:hover{transform:translateY(-2px)}
.btn-acc{background:var(--acc);color:var(--deep)}
.btn-out{border:1px solid var(--line);color:var(--pearl)}
.btn-out:hover{border-color:var(--acc)}
.cover{display:block;width:100%;max-width:640px;justify-self:end;border-radius:18px;overflow:hidden;box-shadow:0 50px 100px -40px rgba(0,0,0,.7),0 0 0 1px var(--line);transform:perspective(1400px) rotateY(-6deg) rotateX(2deg);transition:transform .9s var(--ease);cursor:zoom-in}
.cover:hover{transform:perspective(1400px) rotateY(0) rotateX(0) translateY(-4px)}
@media (max-width:900px){.cover{transform:none;justify-self:stretch;max-width:none}}
.chero.idx h1{font-size:clamp(64px,9vw,140px)}
.chero.idx .lede{font-size:19px;max-width:60ch}

/* toc */
.tocwrap{position:sticky;top:68px;z-index:40;background:rgba(30,21,48,.9);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.tochead{display:flex;justify-content:space-between;gap:16px;padding:12px 0 2px;font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;font-weight:700;color:var(--muted)}
.tochead .hint{letter-spacing:.02em;text-transform:none;font-weight:500}
@media (max-width:720px){.tochead .hint{display:none}}
.toc{display:flex;gap:8px;overflow-x:auto;padding:10px 0 14px;scrollbar-width:none}
.toc::-webkit-scrollbar{display:none}
.toc a{flex:none;display:flex;gap:8px;align-items:center;padding:8px 14px;border-radius:999px;border:1px solid var(--line);font-size:13.5px;text-decoration:none;color:var(--muted);white-space:nowrap;transition:background .3s,color .3s,border-color .3s}
.toc a b{font-weight:700;color:var(--acc);font-size:12px}
.toc a:hover,.toc a.on{color:var(--pearl);border-color:var(--acc);background:color-mix(in srgb,var(--acc) 12%,transparent)}

/* slides */
.slides{padding:clamp(40px,6vw,80px) 0}
.slide{margin:0 auto clamp(60px,8vw,110px);max-width:1100px;scroll-margin-top:190px}
.slide header{display:grid;grid-template-columns:auto 1fr;gap:4px 18px;align-items:baseline;margin-bottom:20px}
.slide .num{grid-row:span 2;font-family:var(--serif);font-size:56px;line-height:.9;color:var(--acc)}
.slide .kick{font-size:12px;letter-spacing:.2em;text-transform:uppercase;font-weight:700;color:var(--muted)}
.slide h2{font-size:clamp(24px,2.6vw,34px)}
.frame{display:block;width:100%;border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 40px 80px -50px rgba(0,0,0,.8),0 0 0 1px var(--line);cursor:zoom-in;transition:transform .7s var(--ease),box-shadow .7s var(--ease)}
.frame:hover{transform:translateY(-4px) scale(1.005);box-shadow:0 50px 100px -50px rgba(0,0,0,.9),0 0 0 1px var(--acc)}
.frame img{width:100%;height:auto}
.txt{margin-top:14px;border-top:1px solid var(--line);padding-top:10px}
.txt summary{cursor:pointer;font-size:13.5px;color:var(--muted);list-style:none;display:inline-flex;gap:8px;align-items:center}
.txt summary::before{content:'+';display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;border:1px solid var(--line);font-size:13px;transition:transform .4s}
.txt[open] summary::before{transform:rotate(45deg)}
.txt div{columns:2 320px;column-gap:40px;margin-top:14px;font-size:14px;color:var(--muted)}
.txt p{margin:0 0 6px;break-inside:avoid}

/* cards */
.cgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.cgrid.two{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
@media (max-width:980px){.cgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.cgrid,.cgrid.two{grid-template-columns:1fr}}
.ccard{display:flex;flex-direction:column;border-radius:22px;overflow:hidden;background:var(--ink-2);border:1px solid var(--line);text-decoration:none;transition:transform .6s var(--ease),border-color .4s,box-shadow .6s var(--ease)}
.ccard:hover{transform:translateY(-6px);border-color:var(--acc);box-shadow:0 40px 80px -50px color-mix(in srgb,var(--acc) 60%,transparent)}
.cimg{overflow:hidden;aspect-ratio:10/7;background:#fff}
.cimg img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease)}
.ccard:hover .cimg img{transform:scale(1.04)}
.cbody{padding:22px 22px 24px;display:flex;flex-direction:column;gap:6px;flex:1}
.ckind{font-size:12.5px;font-weight:600;color:var(--acc)}
.cbody h3{font-size:30px}
.ctitle{margin:0;font-family:var(--serif);font-style:italic;font-size:18px;color:var(--muted)}
.ctags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.ctags span{font-size:11.5px;padding:4px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.cgo{margin-top:auto;padding-top:16px;font-weight:600;font-size:14.5px;color:var(--pearl)}
.next{padding:0 0 90px}
.nextbig{display:grid;grid-template-columns:1fr auto;align-items:center;gap:20px;padding:28px 32px;border-radius:24px;background:linear-gradient(120deg,color-mix(in srgb,var(--acc) 22%,var(--ink-2)),var(--ink-2));border:1px solid var(--line);text-decoration:none;margin-bottom:70px;transition:transform .6s var(--ease)}
.nextbig:hover{transform:translateY(-4px)}
.nextbig span{font-size:12px;letter-spacing:.2em;text-transform:uppercase;font-weight:700;color:var(--muted);grid-column:1}
.nextbig b{font-family:var(--serif);font-weight:400;font-size:clamp(34px,4vw,56px);grid-column:1}
.nextbig img{grid-column:2;grid-row:1/span 2;width:min(320px,34vw);border-radius:12px}
.more{font-size:clamp(30px,3.4vw,46px);margin-bottom:26px}

/* lightbox */
.lb{position:fixed;inset:0;z-index:200;background:rgba(14,9,24,.94);display:grid;grid-template-columns:70px 1fr 70px;align-items:center;opacity:0;visibility:hidden;transition:opacity .4s,visibility .4s}
.lb.open{opacity:1;visibility:visible}
.lb figure{margin:0;display:flex;flex-direction:column;align-items:center;gap:14px;max-height:100svh;padding:20px 0}
.lb img{max-width:100%;max-height:calc(100svh - 110px);border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.6);background:#fff}
.lb figcaption{font-size:14px;color:var(--muted)}
.lba{height:100%;font-size:46px;color:var(--pearl);opacity:.7;transition:opacity .3s}
.lba:hover{opacity:1}
.lbx{position:absolute;top:16px;right:18px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);font-size:16px}
@media (max-width:640px){.lb{grid-template-columns:40px 1fr 40px}.lba{font-size:32px}}

.foot{border-top:1px solid var(--line);padding:28px 0;font-size:13px;color:var(--muted)}
.foot-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.js [data-reveal]{opacity:1;transform:none}.cover{transform:none}}

.cover img{width:100%;height:auto}
.cimg img,.nextbig img{height:auto}
.ccard .cimg img{height:100%}

/* case study bundle switcher (in the sticky header) */
.bundle{border-top:1px solid var(--line)}
.bundle-in{display:flex;align-items:center;gap:14px;height:52px}
.bundle .bl{font-size:11px;letter-spacing:.18em;text-transform:uppercase;font-weight:700;color:var(--muted);white-space:nowrap}
.btabs{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1;min-width:0;padding:2px}
.btabs::-webkit-scrollbar{display:none}
.btabs a{flex:none;display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--line);font-size:13.5px;text-decoration:none;color:var(--muted);transition:color .3s,border-color .3s,background .3s}
.btabs a i{width:8px;height:8px;border-radius:50%;background:var(--c);box-shadow:0 0 10px var(--c)}
.btabs a small{font-size:11px;font-weight:700;opacity:.65}
.btabs a:hover{color:var(--pearl);border-color:var(--c)}
.btabs a[aria-current]{color:var(--pearl);border-color:var(--c);background:color-mix(in srgb,var(--c) 16%,transparent)}
.bpdf{flex:none;display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;border-radius:999px;background:var(--lav);color:var(--ink);font-size:13px;font-weight:700;text-decoration:none;transition:transform .3s var(--ease),background .3s}
.bpdf:hover{transform:translateY(-1px);background:#fff}
.bpdf svg{width:15px;height:15px}
.bpdf small{font-size:11px;font-weight:600;opacity:.7}
@media (max-width:720px){.bundle .bl{display:none}.bpdf span,.bpdf small{display:none}.bpdf{padding:0 11px}}
.tocwrap{top:121px}
.slide{scroll-margin-top:240px}
/* bundle feature on the index */
.bfeat{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(28px,5vw,70px);align-items:center;margin-top:clamp(60px,8vw,110px);padding:clamp(22px,3vw,40px);border-radius:28px;border:1px solid var(--line);background:linear-gradient(135deg,rgba(201,184,242,.08),rgba(142,116,216,.03))}
@media (max-width:900px){.bfeat{grid-template-columns:1fr}}
.bcover{display:block;border-radius:16px;overflow:hidden;box-shadow:0 40px 80px -40px rgba(0,0,0,.8),0 0 0 1px var(--line);transition:transform .8s var(--ease)}
.bcover:hover{transform:translateY(-4px)}
.bcover img{width:100%;height:auto}
.bcopy h2{font-size:clamp(36px,4vw,56px);margin:8px 0 14px}
.bcopy h2 em{font-style:italic;color:var(--lav)}
.bidx{list-style:none;margin:24px 0 0;padding:0;border-top:1px solid var(--line)}
.bidx a{display:grid;grid-template-columns:14px 1fr auto auto;gap:14px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);text-decoration:none;font-size:15px}
.bidx i{width:9px;height:9px;border-radius:50%;background:var(--c)}
.bidx b{font-weight:600}
.bidx span{font-size:13px;color:var(--muted)}
.bidx em{font-style:normal;font-size:13px;color:var(--lav);min-width:42px;text-align:right}
.bidx a:hover b{color:var(--lav)}