/* todaq.net v4. Light-first. Opening screen after flourishlabs.ai (centred mark, one line, outline pill, quiet particle network);
   sections after cosmos.network; research cards after sakana.ai. Parent brand = TODAQ crimson + graphite.
   IBM Plex Sans only (no serif). Crisp whites and neutral greys; near-black and charcoal for dark mode. No beige. */

@font-face{font-family:"Plex Sans";src:url(fonts/ibm-plex-sans-latin-300-normal.woff2) format("woff2");font-weight:300;font-display:swap}
@font-face{font-family:"Plex Sans";src:url(fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Sans";src:url(fonts/ibm-plex-sans-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Plex Sans";src:url(fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}

/* ---------- tokens: light (default) ---------- */
:root{
  --bg:#FFFFFF; --bg-2:#F5F6F8; --bg-3:#ECEEF1; --ink:#0E1012; --ink-2:#4B5157; --ink-3:#6B7178;
  --line:rgba(14,16,18,.10); --line-2:rgba(14,16,18,.20);
  --pill:#0E1012; --pill-ink:#FFFFFF;
  --crimson:#E31B4F; --crimson-h:#C8143F; --accent:#BE0F3C;
  --glow:rgba(227,27,79,.075); --net:14,16,18; --net-a:.16;
  --shade:rgba(14,16,18,.06); --radius:20px;
  color-scheme:light;
}
/* ---------- tokens: dark ---------- */
:root[data-theme="dark"]{
  --bg:#0B0C0E; --bg-2:#141619; --bg-3:#1D2024; --ink:#F2F3F4; --ink-2:#A7ACB1; --ink-3:#80868D;
  --line:rgba(255,255,255,.10); --line-2:rgba(255,255,255,.20);
  --pill:#FFFFFF; --pill-ink:#0B0C0E; --accent:#FF6F8F;
  --glow:rgba(227,27,79,.10); --net:255,255,255; --net-a:.20; --shade:rgba(0,0,0,.35);
  color-scheme:dark;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 "Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit}
p{margin:0 0 1em}
h1,h2,h3{font-weight:400;letter-spacing:-.02em;line-height:1.12;margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px;top:12px;z-index:200;background:var(--bg);color:var(--ink);padding:10px 14px;border:1px solid var(--line-2);border-radius:8px}
.skip:focus{left:16px}
.wrap{max-width:1280px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

/* ---------- pills ---------- */
.pill{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:999px;font:500 14px "Plex Sans",sans-serif;text-decoration:none;border:1px solid transparent;white-space:nowrap;transition:background .15s,border-color .15s,color .15s}
.pill svg{width:12px;height:12px;transition:transform .15s}
.pill:hover svg{transform:translateX(2px)}
.pill-solid{background:var(--pill);color:var(--pill-ink)}
.pill-solid:hover{background:var(--crimson);color:#fff}
.pill-dark{background:var(--bg-2);color:var(--ink);border-color:var(--line)}
.pill-dark:hover{border-color:var(--line-2);background:var(--bg-3)}
.pill-line{background:transparent;color:var(--ink);border-color:var(--line-2)}
.pill-line:hover{border-color:var(--ink)}
.pill-lg{height:48px;padding:0 22px;font-size:15px}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;border:1px solid var(--line-2);font-size:12.5px;color:var(--ink-2);white-space:nowrap}

/* ---------- logo ---------- */
.logo{display:inline-flex;align-items:center}
.logo img{height:26px;width:auto}
.logo .l-dark{display:none}
:root[data-theme="dark"] .logo .l-dark{display:block}
:root[data-theme="dark"] .logo .l-light{display:none}

/* ---------- top bar (quiet; logo appears once you leave the opening screen) ---------- */
.site-h{position:fixed;inset:0 0 auto 0;z-index:100;border-bottom:1px solid transparent;transition:background .25s,border-color .25s}
.site-h.solid{background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:saturate(1.3) blur(14px);-webkit-backdrop-filter:saturate(1.3) blur(14px);border-bottom-color:var(--line)}
.site-h .row{display:flex;align-items:center;height:72px;gap:24px}
.site-h .logo{transition:opacity .25s}
.is-home .site-h:not(.solid) .logo{opacity:0;pointer-events:none}
.nav{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav > .dd > button,.nav > a{background:none;border:0;color:var(--ink);font:400 15px "Plex Sans",sans-serif;padding:10px 14px;border-radius:999px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.nav > .dd > button:hover,.nav > a:hover,.nav > .dd.open > button{background:var(--bg-2)}
.nav > .dd > button svg{width:10px;height:10px;opacity:.7;transition:transform .15s}
.nav > .dd.open > button svg{transform:rotate(180deg)}
.dd{position:relative}
.dd-panel{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%);min-width:300px;background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:0 24px 60px var(--shade);display:none}
.dd.open .dd-panel{display:block}
.dd-panel a{display:block;padding:12px 14px;border-radius:10px;text-decoration:none}
.dd-panel a:hover{background:var(--bg-2)}
.dd-panel a b{display:block;font-weight:500;font-size:15px}
.dd-panel a span{display:block;font-size:13px;color:var(--ink-2)}
.h-right{display:flex;align-items:center;gap:10px}
.icon-btn{width:40px;height:40px;border-radius:999px;border:1px solid var(--line-2);background:transparent;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.icon-btn:hover{background:var(--bg-2)}
.icon-btn svg{width:16px;height:16px}
.menu-btn{display:none}
@media (max-width:980px){
  .nav{position:fixed;inset:72px 0 auto 0;margin:0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:10px clamp(20px,4vw,48px) 20px;display:none;max-height:calc(100vh - 72px);overflow:auto}
  .nav.open{display:flex}
  .nav > .dd > button,.nav > a{width:100%;justify-content:space-between;padding:16px 4px;border-radius:0;border-bottom:1px solid var(--line);font-size:17px}
  .dd-panel{position:static;transform:none;box-shadow:none;border:0;background:transparent;padding:0 0 8px;min-width:0}
  .menu-btn{display:inline-flex;margin-left:auto}
  .h-right{margin-left:auto}
  .h-right .pill-solid{display:none}
}

/* ---------- opening screen (after flourishlabs.ai) ---------- */
.opening{position:relative;min-height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;overflow:hidden;padding:110px 20px 120px}
.opening::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 50% at var(--gx,50%) var(--gy,42%),var(--glow) 0%,transparent 70%);pointer-events:none}
.opening canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.opening > *:not(canvas){position:relative}
.opening h1{margin:0}
.opening .mark{width:clamp(250px,36vw,540px);height:auto;margin:0 auto}
.opening .mark.l-dark{display:none}
:root[data-theme="dark"] .opening .mark.l-dark{display:block}
:root[data-theme="dark"] .opening .mark.l-light{display:none}
.opening .line{font-size:clamp(20px,2.1vw,28px);font-weight:300;letter-spacing:-.01em;margin:clamp(28px,3.4vw,44px) 0 10px;color:var(--ink)}
.opening .line em{font-style:normal;color:var(--accent)}
.opening .sub{font-size:15px;font-weight:300;color:var(--ink-2);max-width:52ch;margin:0 auto 34px}
.opening .ctas{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px 14px}
.opening .aside{font-size:13px;color:var(--ink-3);text-decoration:none;letter-spacing:.02em}
.opening .aside:hover{color:var(--ink)}
.opening .email{display:inline-block;margin-top:34px;font-size:13px;letter-spacing:.08em;color:var(--ink-2);text-decoration:none;border-bottom:1px solid var(--line-2);padding-bottom:3px}
.opening .email:hover{color:var(--ink);border-bottom-color:var(--ink)}
.opening .locale{margin:16px 0 0;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}
.opening .cue{position:absolute;left:50%;bottom:28px;transform:translateX(-50%);width:22px;height:34px;border:1px solid var(--line-2);border-radius:12px}
.opening .cue::after{content:"";position:absolute;left:50%;top:7px;width:2px;height:7px;margin-left:-1px;border-radius:2px;background:var(--ink-3);animation:cue 1.8s ease-in-out infinite}
@keyframes cue{0%{opacity:0;transform:translateY(0)}40%{opacity:1}100%{opacity:0;transform:translateY(10px)}}

/* ticker */
.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;white-space:nowrap;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.ticker-track{display:inline-flex;gap:56px;padding:20px 0;animation:tick 52s linear infinite}
.ticker span{display:inline-flex;align-items:center;gap:12px;color:var(--ink-2);font-size:15px}
.ticker span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--crimson)}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
.sec{padding:clamp(80px,9vw,136px) 0}
.sec.tight{padding-top:0}
.sec-title{font-size:clamp(28px,2.8vw,40px);max-width:28ch;margin-bottom:clamp(14px,1.6vw,20px)}
.sec-lead{color:var(--ink-2);max-width:60ch;margin-bottom:clamp(36px,4vw,56px);font-size:17px}
.sec-title.center,.sec-lead.center{margin-left:auto;margin-right:auto;text-align:center}

/* accordion + photo (four ways in) */
.ways{display:grid;grid-template-columns:.92fr 1.08fr;gap:20px;align-items:stretch}
.ways-list{display:flex;flex-direction:column;gap:10px}
.way{border:1px solid var(--line);border-radius:16px;background:var(--bg);transition:background .2s,border-color .2s,box-shadow .2s}
.way.open{background:var(--bg-2);border-color:var(--line-2)}
.way > button{width:100%;display:flex;align-items:center;gap:14px;padding:18px 20px;background:none;border:0;color:var(--ink);font:400 19px "Plex Sans",sans-serif;text-align:left;cursor:pointer}
.way > button .ic{width:34px;height:34px;border-radius:10px;background:var(--bg-2);display:inline-flex;align-items:center;justify-content:center;flex:none;color:var(--crimson)}
.way.open > button .ic{background:var(--bg)}
.way > button .ic svg{width:16px;height:16px}
.way .way-body{display:none;padding:0 20px 22px 68px;color:var(--ink-2)}
.way.open .way-body{display:block}
.way .way-body ul{margin:12px 0 18px;padding:0;list-style:none}
.way .way-body li{display:flex;gap:10px;margin:0 0 8px;font-size:15px}
.way .way-body li::before{content:"";width:5px;height:5px;margin-top:10px;border-radius:50%;background:var(--crimson);flex:none}
.way .way-body .links{display:flex;flex-wrap:wrap;gap:8px}
.ways-media{position:relative;border-radius:var(--radius);overflow:hidden;min-height:540px;background:var(--bg-2)}
.ways-media figure{position:absolute;inset:0;margin:0;opacity:0;transition:opacity .45s ease}
.ways-media figure.on{opacity:1}
.ways-media img{width:100%;height:100%;object-fit:cover}
.ways-media figure::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(14,16,18,.28),rgba(14,16,18,0) 38%)}
.ways-media .pill{position:absolute;left:24px;bottom:24px;z-index:2;background:#fff;color:#0E1012}
.ways-media .pill:hover{background:var(--crimson);color:#fff}
.ways-media .qmark{position:absolute;left:28px;top:26px;height:26px;width:auto;z-index:2}
@media (max-width:900px){.ways{grid-template-columns:1fr}.ways-media{min-height:320px;order:-1}}

/* research (after sakana.ai: paper covers, venue tags, horizontal row) */
.car-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px}
.car-btns{display:flex;gap:8px;flex:none}
.row-label{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin:0 0 16px}
.papers{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(270px,340px);gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px;scrollbar-width:none}
.papers::-webkit-scrollbar{display:none}
.paper{scroll-snap-align:start;display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--line);border-radius:4px;overflow:hidden;text-decoration:none;transition:border-color .2s,box-shadow .2s}
.paper:hover{border-color:var(--line-2);box-shadow:0 16px 40px var(--shade)}
.paper .art{aspect-ratio:4/3;background:var(--bg-2);overflow:hidden;border-bottom:1px solid var(--line)}
.paper .art img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.paper:hover .art img{transform:translateY(-6px)}
.paper .txt{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.paper .meta{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;margin-bottom:14px;font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.paper .venue{color:var(--accent);border-bottom:1px solid currentColor;padding-bottom:2px}
.paper .grp{color:var(--ink-3)}
.paper h3{font-size:19px;font-weight:500;letter-spacing:-.01em;line-height:1.25;margin-bottom:10px}
.paper p{color:var(--ink-2);font-size:15px;margin:0}
.res-links{display:grid;gap:10px;margin-top:28px}
.res-links a{display:flex;align-items:center;justify-content:center;gap:8px;height:52px;border:1px solid var(--line-2);text-decoration:none;font-weight:500;font-size:15px;border-radius:2px}
.res-links a.dark{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.res-links a:hover{border-color:var(--ink)}
.res-links a.dark:hover{background:var(--crimson);border-color:var(--crimson);color:#fff}
.res-links svg{width:12px;height:12px}
@media (min-width:900px){.res-links{grid-template-columns:1.4fr 1fr 1fr}}

/* tabs panel */
.panel{background:var(--bg-2);border:1px solid var(--line);border-radius:28px;padding:clamp(28px,5vw,72px);position:relative;overflow:hidden}
.panel .label{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin-bottom:18px}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:clamp(36px,5vw,64px);position:relative}
.tabs button{height:38px;padding:0 16px;border-radius:999px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink);font:400 14px "Plex Sans",sans-serif;cursor:pointer}
.tabs button[aria-selected="true"]{background:var(--pill);color:var(--pill-ink);border-color:var(--pill)}
.tabpanel{font-size:clamp(24px,2.6vw,38px);font-weight:300;line-height:1.28;letter-spacing:-.02em;max-width:30ch;position:relative}
.tabpanel[hidden]{display:none}
.panel .q{position:absolute;right:clamp(20px,4vw,64px);bottom:clamp(20px,4vw,56px);width:clamp(90px,12vw,170px);opacity:.9}

/* stack */
.stack-sec{background:var(--bg-2)}
.stack{display:flex;flex-direction:column;gap:12px;max-width:1040px;margin:0 auto}
.layer{display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:start;background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:26px 28px;text-decoration:none;color:var(--ink);transition:box-shadow .2s}
.layer:hover{box-shadow:0 14px 40px var(--shade)}
.layer .ic{width:40px;height:40px;border-radius:12px;background:var(--bg-2);display:flex;align-items:center;justify-content:center;color:var(--crimson)}
.layer .ic svg{width:18px;height:18px}
.layer h3{font-size:22px;margin-bottom:6px}
.layer p{color:var(--ink-2);margin:0;font-size:15px;max-width:60ch}
.center-cta{display:flex;justify-content:center;margin-top:36px}
@media (max-width:700px){.layer{grid-template-columns:auto 1fr}.layer .tag{grid-column:2}}

/* CTA band: bright photo, white wash */
.cta-band{position:relative;overflow:hidden;text-align:center;padding:clamp(110px,13vw,190px) 0}
.cta-band img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,color-mix(in srgb,var(--bg) 70%,transparent),color-mix(in srgb,var(--bg) 88%,transparent))}
.cta-band .wrap{position:relative;z-index:1}
.cta-band h2{font-size:clamp(32px,4vw,56px);font-weight:300;max-width:20ch;margin:0 auto 32px;letter-spacing:-.03em}

/* news (text cards) */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.post{display:flex;flex-direction:column;justify-content:space-between;min-height:220px;padding:26px;border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;background:var(--bg);transition:border-color .2s,box-shadow .2s}
.post:hover{border-color:var(--line-2);box-shadow:0 14px 40px var(--shade)}
.post .date{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.post h3{font-size:21px;line-height:1.3}
.post .go{margin-top:24px;font-size:14px;color:var(--ink-2);display:inline-flex;gap:8px;align-items:center}
.post .go svg{width:12px;height:12px}
@media (max-width:900px){.news{grid-template-columns:1fr}}

/* inner pages */
.page-hero{padding:148px 0 clamp(56px,7vw,96px);border-bottom:1px solid var(--line)}
.page-hero .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center}
.page-hero h1{font-size:clamp(40px,4.6vw,64px);font-weight:300;letter-spacing:-.035em;line-height:1.05;max-width:16ch}
.page-hero .lead{color:var(--ink-2);max-width:58ch;margin-top:24px;font-size:18px}
.page-hero .art{border-radius:var(--radius);overflow:hidden;background:var(--bg-2);aspect-ratio:16/11}
.page-hero .art img{width:100%;height:100%;object-fit:cover}
@media (max-width:900px){.page-hero{padding-top:112px}.page-hero .grid{grid-template-columns:1fr}}
.blocks{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.block{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.block h2{font-size:24px;margin-bottom:12px}
.block p{color:var(--ink-2);margin:0}
.block.wide{grid-column:1/-1}
.people{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:6px}
.person{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:18px}
.person b{display:block;font-weight:500;font-size:17px}
.person span{color:var(--ink-2);font-size:14px}
.mail{display:inline-block;margin-top:12px;font-size:20px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line-2)}
.mail:hover{border-bottom-color:var(--accent)}
@media (max-width:900px){.blocks{grid-template-columns:1fr}.people{grid-template-columns:repeat(2,1fr)}}

/* ---------- footer ---------- */
.site-f{border-top:1px solid var(--line);padding:72px 0 36px;background:var(--bg)}
.orgs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:56px}
.org{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.org h3{font-size:18px;margin-bottom:8px}
.org p{color:var(--ink-2);font-size:15px}
.f-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:40px 0;border-top:1px solid var(--line)}
.f-cols h4{font:500 14px "Plex Sans",sans-serif;margin:0 0 14px;color:var(--ink)}
.f-cols ul{list-style:none;margin:0;padding:0}
.f-cols li{margin:0 0 10px}
.f-cols a{color:var(--ink-2);text-decoration:none;font-size:15px}
.f-cols a:hover{color:var(--ink)}
.f-base{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}
@media (max-width:900px){.orgs{grid-template-columns:1fr}.f-cols{grid-template-columns:repeat(2,1fr)}}

/* ---------- lessons from wgsn.com: negative space, one idea per screen, alternating rows, floating-card banner, reveals ---------- */
h2,.sec-title{font-weight:500;letter-spacing:-.025em}
.intro-c{text-align:center;max-width:980px;margin:0 auto clamp(48px,6vw,88px)}
.intro-c .sec-title{margin:0 auto 14px;max-width:none}
.intro-c p{color:var(--ink-2);font-size:18px;margin:0}
.rows{display:flex;flex-direction:column;gap:clamp(72px,9vw,128px)}
.zrow{display:grid;grid-template-columns:1fr 1.85fr;gap:clamp(32px,5vw,80px);align-items:center}
.zrow.flip{grid-template-columns:1.85fr 1fr}
.zrow.flip .ztxt{order:2}
.zimg{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:16/10;background:var(--bg-2)}
.zimg img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s cubic-bezier(.2,.7,.2,1)}
.zrow:hover .zimg img{transform:scale(1.025)}
.zimg .qmark{position:absolute;left:24px;top:22px;height:24px;width:auto}
.ztxt .kicker{display:inline-flex;align-items:center;gap:10px;color:var(--ink-3);font-size:14px;margin-bottom:14px}
.ztxt .kicker .ic{width:30px;height:30px;border-radius:9px;background:var(--bg-2);display:inline-flex;align-items:center;justify-content:center;color:var(--crimson)}
.ztxt .kicker .ic svg{width:15px;height:15px}
.ztxt h3{font-size:clamp(26px,2.4vw,32px);font-weight:500;letter-spacing:-.02em;margin-bottom:16px}
.ztxt p{color:var(--ink-2);font-size:16px;line-height:1.65}
.ztxt ul{list-style:none;margin:0 0 22px;padding:0}
.ztxt li{display:flex;gap:10px;margin:0 0 8px;font-size:15px;color:var(--ink-2)}
.ztxt li::before{content:"";width:5px;height:5px;margin-top:10px;border-radius:50%;background:var(--crimson);flex:none}
.arrow{display:inline-flex;align-items:center;gap:8px;font-weight:500;font-size:15px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:3px;margin-right:22px;margin-top:6px}
.arrow svg{width:12px;height:12px;transition:transform .15s}
.arrow:hover{color:var(--accent);border-bottom-color:var(--accent)}
.arrow:hover svg{transform:translateX(3px)}
@media (max-width:900px){.zrow,.zrow.flip{grid-template-columns:1fr}.zrow.flip .ztxt{order:0}.zrow .zimg{order:-1}}

.quote{text-align:center;padding:clamp(96px,11vw,168px) 0}
.quote blockquote{margin:0 auto 34px;max-width:none;font-size:clamp(32px,4.2vw,60px);font-weight:300;line-height:1.12;letter-spacing:-.035em}
.quote blockquote em{font-style:normal;color:var(--accent)}

.banner{position:relative;border-radius:16px;overflow:hidden;min-height:clamp(420px,42vw,560px);display:flex;align-items:center;padding:clamp(20px,4vw,56px)}
.banner > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.banner .card-w{position:relative;background:var(--bg);border-radius:14px;padding:clamp(28px,3.4vw,48px);max-width:520px;box-shadow:0 20px 60px rgba(14,16,18,.12)}
.banner h2{font-size:clamp(28px,2.8vw,38px);margin-bottom:14px}
.banner p{color:var(--ink-2);margin-bottom:26px}
.banner .btns{display:flex;flex-wrap:wrap;gap:10px}

/* scroll reveals (only when JS is running; content stays visible without it) */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .9s ease,transform .9s cubic-bezier(.2,.7,.2,1)}
.js .rv.in{opacity:1;transform:none}
.js .rv.d1{transition-delay:.08s}.js .rv.d2{transition-delay:.16s}.js .rv.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){.js .rv{opacity:1;transform:none}}

/* opening screen: entrance and interaction polish */
.opening h1,.opening .line,.opening .sub{will-change:transform}
.opening h1{transform-style:preserve-3d}
.opening .ctas .pill{transition:background .15s,border-color .15s,color .15s,box-shadow .25s}
.opening .ctas .pill:hover{background:var(--pill);color:var(--pill-ink);border-color:var(--pill);box-shadow:0 10px 30px var(--shade)}
.js .opening h1 .mark,.js .opening .line,.js .opening .sub,.js .opening .ctas,.js .opening .cue{animation:rise 1.1s cubic-bezier(.2,.7,.2,1) backwards}
.js .opening .line{animation-delay:.18s}.js .opening .sub{animation-delay:.3s}.js .opening .ctas{animation-delay:.42s}.js .opening .cue{animation-delay:.9s}
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
.js .opening h1 .mark{animation-name:markin;animation-duration:1.4s}
@keyframes markin{from{opacity:0;transform:translateY(18px) scale(.97);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}
.opening{cursor:crosshair}
.opening a,.opening button{cursor:pointer}

/* ---------- tech overview: minimal animated diagrams ---------- */
.tech-hero{padding:150px 0 clamp(64px,8vw,112px)}
.tech-hero h1{font-size:clamp(40px,5vw,68px);font-weight:300;letter-spacing:-.04em;line-height:1.04;margin:0 0 20px}
.tech-hero .intro-c p{font-size:19px;max-width:56ch;margin:0 auto}
.tech-hero .co{margin-top:14px!important;font-size:14px!important;color:var(--ink-3)!important;letter-spacing:.02em}
.dgcard{background:var(--bg-2);border:1px solid var(--line);border-radius:16px;padding:clamp(12px,2.4vw,28px);display:flex;align-items:center;justify-content:center}
.stack-sec .dgcard{background:var(--bg)}
.dgcard.wide{max-width:820px;margin:0 auto}
.dg{width:100%;height:auto;display:block;overflow:visible}
.dg text{font-family:"Plex Sans",system-ui,sans-serif}
.dg-t{fill:var(--ink-3);font-size:12px;font-weight:500;letter-spacing:.12em;text-transform:uppercase}
.dg-t.ink{fill:var(--ink)}
.dg-t.small{font-size:10.5px;letter-spacing:.1em}
.dg-line{fill:none;stroke:var(--line-2);stroke-width:1.2}
.dg-line.faint{stroke:var(--line);stroke-dasharray:3 4}
.dg-node{fill:var(--bg);stroke:var(--ink-3);stroke-width:1.2}
.dg-twin{fill:var(--bg);stroke:var(--crimson);stroke-width:1.6}
.dg-twin.big{stroke-width:1.4}
.dg-halo{fill:none;stroke:var(--crimson);stroke-width:1;stroke-opacity:.45}
.dg-slot{fill:var(--bg);stroke:var(--line-2);stroke-width:1.2}
.dg-slot.ring{fill:none}
.dg-rule{fill:var(--crimson)}
.dg-more{fill:var(--ink-3);opacity:.6}
.dg-file{fill:var(--bg);stroke:var(--ink);stroke-width:1.3;stroke-linejoin:round}
.dg-fold{fill:none;stroke:var(--ink);stroke-width:1.3;stroke-linejoin:round}
.dg-fl{fill:none;stroke:var(--crimson);stroke-width:1.4;stroke-linecap:round}
.zrow .dgcard{aspect-ratio:auto}
.ztxt .kicker .num{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:var(--bg);border:1px solid var(--line);color:var(--crimson);font-weight:500;font-size:12px}
.props{max-width:1040px;margin:0 auto;border-top:1px solid var(--line)}
.prop{display:grid;grid-template-columns:56px 1.15fr 1fr;gap:28px;align-items:baseline;padding:30px 0;border-bottom:1px solid var(--line)}
.prop .pn{font-size:13px;color:var(--crimson);font-weight:500;letter-spacing:.08em}
.prop h3{font-size:22px;font-weight:500;letter-spacing:-.015em;margin:0 0 6px}
.prop p{margin:0;color:var(--ink-2)}
.prop .vs{font-size:15px;color:var(--ink-3)}
.prop .vs span{display:block;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:4px}
@media (max-width:800px){.prop{grid-template-columns:40px 1fr;gap:10px 16px}.prop .vs{grid-column:2}}
.quote .q-lead{color:var(--ink-2);max-width:58ch;margin:-10px auto 36px;font-size:17px}
.quote .btns{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:36px}
.doors{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.door{position:relative;display:flex;flex-direction:column;gap:4px;padding:22px 24px 24px;border:1px solid var(--line);border-radius:16px;background:var(--bg);text-decoration:none;transition:border-color .2s,box-shadow .2s,transform .2s}
.door:hover{border-color:var(--line-2);box-shadow:0 14px 40px var(--shade);transform:translateY(-2px)}
.door b{font-weight:500;font-size:17px}
.door span{color:var(--ink-2);font-size:14px}
.door i{position:absolute;right:20px;top:22px;color:var(--crimson)}
.door i svg{width:13px;height:13px;transition:transform .15s}
.door:hover i svg{transform:translateX(3px)}
@media (max-width:900px){.doors{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.doors{grid-template-columns:1fr}}
@media (max-width:600px){.dg-t{font-size:17px}.dg-t.small{font-size:13px;letter-spacing:.06em}.dgcard{padding:10px}}

/* move 3: three stacked examples, text stays in view */
.zrow.stacked{align-items:start}
.zrow.stacked .ztxt{position:sticky;top:120px}
.stack-ex{display:flex;flex-direction:column;gap:16px}
.dgcard.ex{flex-direction:column;align-items:stretch;margin:0;gap:6px}
.dgcard.ex figcaption{display:flex;flex-direction:column;gap:2px;padding:6px 8px 0}
.dgcard.ex figcaption b{font-weight:500;font-size:16px}
.dgcard.ex figcaption span{color:var(--ink-2);font-size:14px}
@media (max-width:900px){.zrow.stacked .ztxt{position:static}}
.dg-api{fill:var(--bg);stroke:var(--ink-3);stroke-width:1}
.dg-t.tiny{font-size:8.5px;letter-spacing:.08em}

/* ---------- news: index and essay pages ---------- */
.news-hero h1{font-size:clamp(40px,4.6vw,64px);font-weight:300;letter-spacing:-.035em;line-height:1.05}
.news-index{padding-top:clamp(40px,5vw,72px)}
.month{display:grid;grid-template-columns:200px 1fr;gap:32px;padding:32px 0;border-top:1px solid var(--line)}
.month h2{font-size:15px;font-weight:500;letter-spacing:.02em;color:var(--ink-3);margin:6px 0 0}
.post-list{display:flex;flex-direction:column;gap:8px}
.post-row{display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:start;padding:14px;margin:-14px;border-radius:16px;text-decoration:none;transition:background .2s}
.post-row:hover{background:var(--bg-2)}
.post-row .th{aspect-ratio:16/10;border-radius:10px;overflow:hidden;background:var(--bg-2)}
.post-row .th img{width:100%;height:100%;object-fit:cover}
.post-row .date{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin:2px 0 8px}
.post-row h3{font-size:22px;font-weight:500;letter-spacing:-.015em;line-height:1.25;margin:0 0 8px}
.post-row p{color:var(--ink-2);font-size:15px;margin:0 0 6px}
.post-row .by{color:var(--ink-3);font-size:13px}
@media (max-width:800px){.month{grid-template-columns:1fr;gap:12px}.post-row{grid-template-columns:110px 1fr;gap:14px}.post-row h3{font-size:18px}}

.essay{padding-bottom:40px}
.essay-h{max-width:820px;padding-top:140px}
.crumbs{display:flex;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:22px}
.crumbs a{text-decoration:none;color:var(--accent)}
.essay-h h1{font-size:clamp(34px,4.2vw,54px);font-weight:500;letter-spacing:-.03em;line-height:1.08;margin:0 0 18px}
.essay-h .dek{font-size:clamp(18px,1.6vw,21px);font-weight:300;color:var(--ink-2);line-height:1.45;margin:0 0 22px}
.essay-h .meta{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--ink-3);padding-bottom:28px;border-bottom:1px solid var(--line);margin:0}
.prose{max-width:820px;padding-top:36px;font-size:18.5px;line-height:1.72}
.prose > *{max-width:680px;margin-left:auto;margin-right:auto}
.prose p{margin:0 auto 1.15em}
.prose h2,.prose h3,.prose h4,.prose h5,.prose h6{font-weight:500;letter-spacing:-.015em;line-height:1.25;margin:1.9em auto .6em}
.prose h2{font-size:28px}.prose h3{font-size:23px}.prose h4{font-size:19px}.prose h5,.prose h6{font-size:16px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3)}
.prose a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px}
.prose strong{font-weight:500}
.prose ul,.prose ol{padding-left:1.3em;margin:0 auto 1.2em}
.prose li{margin:0 0 .45em}
.prose li p{margin:0}
.prose blockquote{border-left:2px solid var(--crimson);margin:1.6em auto;padding:.2em 0 .2em 1.2em;color:var(--ink-2);font-size:20px;font-weight:300}
.prose blockquote p:last-child{margin-bottom:0}
.prose hr{border:0;height:1px;background:var(--line);margin:2.4em auto}
.prose figure.art-fig{max-width:820px;margin:1.6em auto 2em}
.prose figure.art-fig img{width:100%;height:auto;border-radius:12px;background:var(--bg-2)}
.prose figcaption{font-size:14px;color:var(--ink-3);text-align:center;margin-top:10px}
.prose code{font-size:.88em;background:var(--bg-2);padding:.1em .35em;border-radius:5px}
.prose .footnote{font-size:15px;color:var(--ink-2);border-top:1px solid var(--line);padding-top:12px;margin-top:12px}
.prose .footnote-anchor{font-size:.75em;vertical-align:super;text-decoration:none}
.prose aside.embed{margin:1.6em auto}
.prose aside.embed a{display:flex;flex-direction:column;gap:4px;padding:18px 20px;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:var(--ink);background:var(--bg-2);transition:border-color .2s}
.prose aside.embed a:hover{border-color:var(--line-2)}
.prose aside.embed span{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.prose aside.embed b{font-weight:500;font-size:18px;line-height:1.3}
.prose aside.embed i{font-style:normal;font-size:14px;color:var(--accent)}
.essay-f{max-width:820px;padding-top:24px}
.essay-f .orig{max-width:680px;margin:28px auto 0;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-3)}
.essay-f .orig a{color:var(--accent)}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:680px;margin:32px auto 0}
.pn a{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;text-decoration:none;transition:border-color .2s,box-shadow .2s}
.pn a:hover{border-color:var(--line-2);box-shadow:0 12px 32px var(--shade)}
.pn .pn-r{text-align:right}
.pn span{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.pn b{font-weight:500;font-size:15px;line-height:1.35}
.essay-f .back{max-width:680px;margin:28px auto 0}
@media (max-width:600px){.pn{grid-template-columns:1fr}.pn .pn-r{text-align:left}.prose{font-size:17.5px}.essay-h{padding-top:112px}}

/* v5: two protocols */
.protos-sec{border-top:1px solid var(--line)}
.protos{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:1040px;margin:0 auto}
.proto{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:clamp(24px,3vw,36px);display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden}
.proto::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:var(--crimson)}
.proto+.proto::before{background:var(--ink-3)}
.proto .p-top{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--ink-3);letter-spacing:.04em;text-transform:uppercase}
.proto .p-num{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:var(--bg-2);border:1px solid var(--line);color:var(--crimson);font-weight:500;letter-spacing:0}
.proto h3{font-size:clamp(22px,2vw,26px);font-weight:500;letter-spacing:-.02em;margin:0;line-height:1.25}
.proto .p-name{display:block;font-size:clamp(34px,3.4vw,46px);letter-spacing:-.03em;line-height:1.05;margin-bottom:6px}
.proto p{color:var(--ink-2);margin:0;font-size:16px;line-height:1.6}
.proto .p-links{margin-top:auto;padding-top:6px}
.p-rel{grid-column:1/-1;text-align:center;color:var(--ink-3);font-size:15px;margin:14px 0 0}
@media (max-width:760px){.protos{grid-template-columns:1fr}}