/* ---------- fonts (self-hosted, SIL OFL; see /assets/fonts/LICENSE-*.txt) ---------- */
@font-face{font-family:'Nunito Sans';font-style:normal;font-display:swap;font-weight:200 1000;src:url(/assets/fonts/nunito-sans-latin-wght-normal.woff2) format('woff2-variations');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Nunito Sans';font-style:normal;font-display:swap;font-weight:200 1000;src:url(/assets/fonts/nunito-sans-latin-ext-wght-normal.woff2) format('woff2-variations');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Lexend';font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/fonts/lexend-latin-wght-normal.woff2) format('woff2-variations');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Lexend';font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/fonts/lexend-latin-ext-wght-normal.woff2) format('woff2-variations');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-display:swap;font-weight:400;src:url(/assets/fonts/ibm-plex-mono-latin-400-normal.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-display:swap;font-weight:500;src:url(/assets/fonts/ibm-plex-mono-latin-500-normal.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-display:swap;font-weight:600;src:url(/assets/fonts/ibm-plex-mono-latin-600-normal.woff2) format('woff2')}

/* ---------- tokens ---------- */
:root{
  --chalk:#F6F8FB; --paper:#FFFFFF; --ink:#0F1621; --ink-2:#3A4656; --ink-3:#6B7686;
  --line:#DCE3EC; --line-2:#C6D0DC; --tint:#EDF1F6;
  --stage:#0F172A; --stage-deep:#0B1120; --stage-ink:#F8FAFC; --stage-dim:#94A3B8;
  /* the classroom screen: a smart whiteboard, lit, not a projector in the dark */
  --panel:#FBFCFE; --panel-ink:#111926; --panel-dim:#5A6779; --panel-line:#E2E8F0; --panel-bezel:#9FADBE;
  --r-red:#E5484D; --r-blue:#3E7BFA; --r-green:#30A46C; --r-yellow:#FFC53D;
  --m-blue:#0088D0; --m-orange:#F07008; --m-green:#18A028;
  --wm:'Nunito Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --stagef:'Lexend',var(--wm);
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --wrap:1200px; --gutter:clamp(20px,4vw,48px);
  --sec:clamp(64px,9vw,120px);
  --radius:8px;
  --focus:0 0 0 3px var(--chalk),0 0 0 6px var(--m-blue);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--chalk);color:var(--ink);font-family:var(--wm);font-size:18px;line-height:1.55;font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-kerning:normal}
img,svg{display:block;max-width:100%}
a{color:inherit;text-underline-offset:.16em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:4px}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.022em;line-height:1.02;text-wrap:balance}
h1{font-size:clamp(42px,6.4vw,88px)}
h2{font-size:clamp(30px,4.2vw,54px)}
h3{font-size:clamp(22px,2.4vw,28px);letter-spacing:-.012em;line-height:1.15}
h4{font-size:19px;letter-spacing:0;line-height:1.3}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.lede{font-size:clamp(19px,1.5vw,22px);line-height:1.5;color:var(--ink-2);max-width:56ch;text-wrap:pretty}
.muted{color:var(--ink-3)}
.small{font-size:15px;line-height:1.5}
.eyebrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);font-weight:500}
.eyebrow b{color:var(--ink);font-weight:600}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.sec{padding:var(--sec) 0}
.sec.tight{padding-top:calc(var(--sec) * .6)}
.dark{background:var(--stage-deep);color:var(--stage-ink)}
.dark .eyebrow{color:var(--stage-dim)}
.dark .eyebrow b{color:var(--stage-ink)}
.dark .lede,.dark .muted{color:var(--stage-dim)}
.dark :focus-visible{box-shadow:0 0 0 3px var(--stage-deep),0 0 0 6px #7BB8F0}
.rule{border:0;border-top:1px solid var(--line);margin:0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:start}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,40px)}
@media (max-width:860px){.grid2,.grid3{grid-template-columns:1fr}}
.stack>*+*{margin-top:16px}
.stack-l>*+*{margin-top:28px}
.center{text-align:center}
.center .lede{margin-inline:auto}
.hide{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 22px;border-radius:999px;border:1.5px solid var(--ink);background:var(--ink);color:#fff;
  font:600 16px/1 var(--wm);text-decoration:none;cursor:pointer;white-space:nowrap;transition:transform .15s ease,background .15s ease,color .15s ease}
.btn:hover{background:#1B2532;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--tint)}
.btn.light{background:#fff;border-color:#fff;color:var(--ink)}
.btn.light:hover{background:#E9EEF5}
.btn.outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn.outline-light:hover{border-color:#fff;background:rgba(255,255,255,.06)}
.btn svg{width:18px;height:18px}
.btn.sm{min-height:40px;padding:0 16px;font-size:15px}
.ctas{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.ctas .note{font-size:15px;color:var(--ink-3);flex-basis:100%}
.ctas .note .flag{margin-right:8px;vertical-align:-2px}

/* ---------- lockup (identity page rules) ---------- */
.lock{display:inline-flex;flex-direction:column;align-items:flex-start;width:fit-content;color:var(--ink);text-decoration:none}
.lock .lrow{display:flex;align-items:flex-start;gap:calc(var(--u) * .10)}
.lock .lmark{height:calc(var(--u) * .705);width:auto;flex:none;margin-top:calc(var(--u) * .054)}
.lock .lven{display:block;font-family:var(--wm);font-weight:800;font-size:var(--u);line-height:.86;letter-spacing:.02em}
.lock .lmeth{display:flex;justify-content:space-between;width:100%;margin-top:calc(var(--u) * -.01);font-family:var(--wm);font-weight:700;font-size:calc(var(--u) * .24);line-height:1;text-transform:uppercase;color:var(--ink-2)}
.lock .lmeth i{font-style:normal}
.lock.on-dark{color:#fff}.lock.on-dark .lmeth{color:rgba(255,255,255,.72)}
.sig{display:inline-flex;align-items:center;gap:calc(var(--u) * .45);text-decoration:none;color:inherit}
.sig .sigmark{height:calc(var(--u) * 1.25);width:auto}
.sig .sigtext{font-size:var(--u);line-height:1;font-weight:500;letter-spacing:.01em}
.sig .sigtext b{font-weight:800;letter-spacing:.03em}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--chalk) 86%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s}
.hdr.scrolled{border-bottom-color:var(--line)}
.hdr .bar{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.hdr .brand{display:inline-flex;align-items:center;text-decoration:none}
.hdr nav{display:flex;align-items:center;gap:6px}
.hdr nav a{padding:10px 12px;border-radius:999px;text-decoration:none;font-weight:600;font-size:15.5px;color:var(--ink-2)}
.hdr nav a:hover,.hdr nav a[aria-current=page]{color:var(--ink);background:var(--tint)}
.hdr .acts{display:flex;align-items:center;gap:8px}
.hdr .login{padding:10px 12px;font-weight:600;font-size:15.5px;text-decoration:none;color:var(--ink-2);border-radius:999px}
.hdr .login:hover{color:var(--ink);background:var(--tint)}
.hdr .burger{display:none;width:44px;height:44px;border:1.5px solid var(--line-2);border-radius:999px;background:transparent;cursor:pointer;align-items:center;justify-content:center;color:var(--ink)}
.hdr .burger svg{width:20px;height:20px}
@media (max-width:980px){
  .hdr nav,.hdr .login{display:none}
  .hdr .burger{display:inline-flex}
  .hdr.open nav{display:flex;flex-direction:column;align-items:stretch;position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--line);padding:12px var(--gutter) 20px;gap:2px;box-shadow:0 20px 40px -20px rgba(15,22,33,.25)}
  .hdr.open nav a{padding:14px 12px;font-size:17px}
}

/* ---------- hero ---------- */
.hero{padding:clamp(40px,6vw,88px) 0 0}
.hero h1{max-width:14ch;font-size:clamp(40px,5.6vw,78px)}
.hero .hgrid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.9fr);gap:clamp(24px,4vw,56px);align-items:center}
.hero .hside{padding-top:0}
@media (max-width:860px){.hero .hgrid{grid-template-columns:1fr}.hero .hside{padding-top:8px}}
/* flags are inline SVG, never emoji — Windows has no country-flag emoji font */
.flag{display:inline-block;vertical-align:-2px;border-radius:2px;box-shadow:0 0 0 1px rgba(15,22,33,.18)}
.ftr .made{margin:34px 0 0;display:flex;align-items:center;gap:8px;font-size:14px;color:var(--stage-dim)}
.ftr .made .flag{box-shadow:0 0 0 1px rgba(255,255,255,.28)}
.ftr .made span{margin-left:2px}
.hero .sub{margin-top:24px}
.hero .ctas{margin-top:28px}

/* ---------- the room (signature) ---------- */
.room-wrap{margin-top:clamp(36px,5vw,64px)}
.room{position:relative;width:100%;aspect-ratio:16/10;border-radius:14px;overflow:hidden;background:#E9EEF4;box-shadow:0 40px 80px -46px rgba(15,22,33,.45),0 0 0 1px rgba(15,22,33,.10)}
.room .roomsvg{position:absolute;inset:0;width:100%;height:100%}
.room .stage{position:absolute;left:15%;top:8%;width:70%;height:63%;container-type:inline-size;background:var(--panel);color:var(--panel-ink);overflow:hidden;font-family:var(--stagef);
  box-shadow:0 0 0 .6cqw #1E2A3D,0 0 120px 20px rgba(120,170,240,.22)}
.room .stage::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(226,234,244,.35) 55%,rgba(203,215,230,.28));pointer-events:none}
.room .layer{position:absolute;inset:0}
.room .sit,.room .up,.room .gaze{transition:opacity .45s ease}
.room .up{opacity:0}
.room .gaze{opacity:0}
.room[data-up="1"] .sit{opacity:0}
.room[data-up="1"] .up{opacity:1}
.room[data-up="1"] .gaze{opacity:1;transition-delay:.35s}
@media (prefers-reduced-motion:reduce){.room .sit,.room .up,.room .gaze{transition:none}}
.room .layer.front{pointer-events:none}
.room .layer{display:none}
.room[data-scene="classroom"] .layer[data-for="classroom"],.room[data-scene="groups"] .layer[data-for="groups"],.room[data-scene="home"] .layer[data-for="home"]{display:block}
.room[data-scene="classroom"] .stage{left:18.75%;top:7%;width:62.5%;height:56.2%}
/* small groups: there is no shared board — every table runs its own round on its own tablet */
.room[data-scene="groups"] .stage{display:none}
/* One rule per state, deliberately not a grouped selector list: a single bad member of
   a list drops the whole list, and this one is switched by an attribute set from JS. */
.tv-names,.tv-dots,.tv-ring,.tv-q,.tv-tick{opacity:0;transition:opacity .4s ease}
.room[data-step="ready"] .tv-names{opacity:1}
.room[data-step="secret"] .tv-dots{opacity:1}
.room[data-step="guess"] .tv-dots{opacity:1}
.room[data-step="guess"] .tv-ring{opacity:1}
.room[data-step="reveal"] .tv-dots{opacity:1}
.room[data-step="reveal"] .tv-ring{opacity:1}
.room[data-step="question"] .tv-q{opacity:1}
.room[data-step="done"] .tv-tick{opacity:1}
@media (prefers-reduced-motion:reduce){.tv-names,.tv-dots,.tv-ring,.tv-q,.tv-tick{transition:none}}
.room[data-scene="home"] .stage{left:29.4%;top:25%;width:41.25%;height:39.5%;box-shadow:none}
.room .st{padding-bottom:9cqw}
.marquee{margin-top:36px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee .mrow{display:flex;gap:12px;width:max-content;animation:slide 44s linear infinite}
.marquee:hover .mrow{animation-play-state:paused}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.marquee .chip{display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border:1px solid var(--line);border-radius:999px;background:var(--paper);font-weight:600;font-size:17px;white-space:nowrap;color:var(--ink-3)}
.marquee .chip i{font-style:normal;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);border:1px solid var(--line-2);border-radius:999px;padding:3px 7px}
.marquee .chip.now{color:var(--ink);border-color:var(--line-2)}
.marquee .chip.now i{color:var(--m-green);border-color:color-mix(in srgb,var(--m-green) 45%,transparent)}
@media (prefers-reduced-motion:reduce){.marquee .mrow{animation:none;flex-wrap:wrap;width:auto}}
.scenes{display:inline-flex;gap:4px;padding:4px;border:1px solid var(--line-2);border-radius:999px;background:var(--paper);margin-bottom:14px}
.scenes button{border:0;background:transparent;border-radius:999px;padding:8px 14px;font:600 14.5px/1 var(--wm);color:var(--ink-2);cursor:pointer}
.scenes button:hover{color:var(--ink)}
.scenes button[aria-selected="true"]{background:var(--ink);color:#fff}
@media (max-width:640px){.room{aspect-ratio:4/5;border-radius:10px;background:radial-gradient(90% 60% at 50% 30%,#F4F7FA,#DDE4EC 70%)}.scenes{display:none}.room .layer{display:none!important}.room .layer.front[data-for="classroom"]{display:block!important}.room .stage{left:6%!important;top:6%!important;width:88%!important;height:49.5%!important}}
/* stage inner layout, sized in container units so it scales with the screen */
.st{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:5cqw 6cqw;opacity:0;transition:opacity .35s ease;pointer-events:none}
.st.on{opacity:1}
.st .chip{position:absolute;top:3.2cqw;left:4cqw;font:500 2cqw/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--panel-dim)}
.st .arc{position:absolute;top:3.2cqw;right:4cqw;font:500 2cqw/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--panel-dim)}
.st .big{font-weight:600;font-size:6.2cqw;line-height:1.08;letter-spacing:-.01em;max-width:26ch;text-wrap:balance}
.st .names{display:flex;gap:6cqw;align-items:flex-start;justify-content:center;margin-top:3cqw}
.st .name{display:flex;flex-direction:column;align-items:center;gap:1.2cqw}
.st .name b{font-size:7cqw;line-height:1;font-weight:700;letter-spacing:-.01em}
.st .name span{font-size:2.3cqw;color:var(--panel-dim);font-family:var(--wm);font-weight:600}
.st .line{font-size:2.6cqw;color:var(--panel-dim);margin-top:2.4cqw;font-family:var(--wm);font-weight:600;max-width:40ch}
.st .colors{display:grid;grid-template-columns:repeat(4,1fr);gap:3cqw;margin-top:4cqw;width:80%}
.st .col{aspect-ratio:1;border-radius:50%;border:.7cqw solid var(--c);display:flex;align-items:center;justify-content:center;font:700 2.3cqw/1 var(--wm);letter-spacing:.08em;color:var(--panel-ink);transition:transform .25s ease,box-shadow .25s ease,background .25s ease}
.st .col.pick{background:color-mix(in srgb,var(--c) 22%,transparent);box-shadow:0 0 0 1.2cqw color-mix(in srgb,var(--c) 45%,transparent);transform:scale(1.06)}
.st .gaze{display:flex;flex-direction:column;align-items:center;gap:2.5cqw}
.st .ring{width:22cqw;height:22cqw;border-radius:50%;border:1cqw solid rgba(17,25,38,.12);position:relative;display:flex;align-items:center;justify-content:center;font:600 8cqw/1 var(--stagef)}
.st .ring::after{content:"";position:absolute;inset:-1cqw;border-radius:50%;border:1cqw solid transparent;border-top-color:#fff;animation:spin 3s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.st .reveal{display:flex;gap:6cqw;align-items:center;margin-top:3cqw}
.st .reveal .rv{display:flex;flex-direction:column;align-items:center;gap:1.4cqw;font:600 2.2cqw/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--panel-dim)}
.st .reveal .dot{width:11cqw;height:11cqw;border-radius:50%;border:.7cqw solid var(--c);display:flex;align-items:center;justify-content:center;font:700 2cqw/1 var(--wm);letter-spacing:.08em;color:#fff}
.st .q{font-weight:500;font-size:5.4cqw;line-height:1.18;letter-spacing:-.005em;max-width:24ch;text-wrap:balance}
.st .turn{margin-top:3.6cqw;font:600 2.6cqw/1.3 var(--wm);color:var(--panel-dim)}
.st .turn b{color:var(--panel-ink)}
.st .hand{position:absolute;inset:0;background:rgba(8,10,14,.82);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2cqw;padding:6cqw;text-align:center}
.st .hand .thanks{font:600 2.6cqw/1.3 var(--wm);color:var(--panel-dim)}
.st .hand b{font-size:7cqw;line-height:1;font-weight:700}
.st .hand .yt{font:600 2.8cqw/1.3 var(--wm);color:var(--panel-ink);max-width:30ch}
.st .taps{font-size:3.4cqw;font-weight:500;color:var(--panel-ink);max-width:24ch;line-height:1.3}
.st .taps i{display:block;font-style:normal;margin-top:2cqw;font-size:2.4cqw;color:var(--panel-dim);font-family:var(--wm);font-weight:600}
/* controls under the room */
.roomctl{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:14px;flex-wrap:wrap}
.roomctl .cap{font-size:15px;color:var(--ink-2);max-width:62ch;min-height:2.8em}
.roomctl .cap b{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);font-weight:500;margin-bottom:4px}
.scenenote{font-size:14px;color:var(--ink-3);margin-top:10px;max-width:64ch}
.roomctl .steps{display:flex;align-items:center;gap:6px}
.roomctl .steps button{width:34px;height:34px;border-radius:999px;border:1.5px solid var(--line-2);background:transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:var(--ink)}
.roomctl .steps button:hover{background:var(--tint)}
.roomctl .steps svg{width:16px;height:16px}
.roomctl .dots{display:flex;gap:5px;margin:0 6px}
.roomctl .dots i{width:7px;height:7px;border-radius:50%;background:var(--line-2);transition:background .2s,transform .2s}
.roomctl .dots i.on{background:var(--ink);transform:scale(1.25)}

/* ---------- the round, explained ---------- */
.round{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,36px);margin-top:48px}
@media (max-width:860px){.round{grid-template-columns:1fr}}
.rstep{display:flex;flex-direction:column;gap:18px}
.rstep .letter{display:inline-flex;align-items:baseline;gap:12px}
.rstep .letter b{font-size:56px;line-height:1;font-weight:800;letter-spacing:-.03em}
.rstep .letter.v b{color:var(--m-blue)}.rstep .letter.e b{color:var(--m-orange)}.rstep .letter.n b{color:var(--m-green)}

.books{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.8fr);gap:clamp(24px,4vw,56px);align-items:center}
/* a fanned stack: three covers, so it reads as a series and not a single book */
.fan{display:block;position:relative;width:100%;max-width:340px;aspect-ratio:1.24;justify-self:end}
.fan img{position:absolute;top:50%;left:50%;width:64%;height:auto;aspect-ratio:1;border-radius:6px;object-fit:cover;
  box-shadow:0 18px 34px -20px rgba(15,22,33,.55),0 0 0 1px rgba(15,22,33,.10);
  transition:transform .45s cubic-bezier(.2,.8,.2,1)}
.fan img:nth-child(1){transform:translate(-50%,-50%) translate(-27%,-6%) rotate(-9deg)}
.fan img:nth-child(2){transform:translate(-50%,-50%) translate(27%,-3%) rotate(8deg)}
.fan img:nth-child(3){transform:translate(-50%,-50%) translate(0,6%) rotate(-1deg);
  box-shadow:0 26px 46px -22px rgba(15,22,33,.6),0 0 0 1px rgba(15,22,33,.12)}
a.fanlink{display:block;text-decoration:none;justify-self:end;width:100%;max-width:340px}
a.fanlink:hover .fan img:nth-child(1){transform:translate(-50%,-50%) translate(-33%,-8%) rotate(-12deg)}
a.fanlink:hover .fan img:nth-child(2){transform:translate(-50%,-50%) translate(33%,-4%) rotate(11deg)}
a.fanlink:hover .fan img:nth-child(3){transform:translate(-50%,-50%) translate(0,7%) rotate(-1deg) scale(1.03)}
a.fanlink:focus-visible{border-radius:12px}
/* the five, on the books page */
/* where to buy: one row per book, a button per retailer. An edition with no URL yet is
   a flat label rather than a dead link, so nobody clicks a promise. */
.buy{display:flex;flex-wrap:wrap;gap:7px;margin:9px 0 2px}
.buy .btn{font-size:12.5px;min-height:34px;padding:6px 13px}
.buy .btn img{height:20px;width:auto;display:block}
.buy .is-soon{background:var(--tint);border-color:var(--line);color:var(--ink-3);cursor:default;box-shadow:none}
.buy .is-soon:hover{background:var(--tint);border-color:var(--line);color:var(--ink-3)}
/* Each shop in its own colour, with its name in text. We do not carry the Amazon or
   Barnes & Noble logo: both are trademarks, and a redrawn one is wrong twice over.
   Naming the shop is what tells a reader where the button goes. Contrast checked:
   8.4:1 and 6.7:1. */
.buy .amz{background:#ff9900;border-color:#e08600;color:#131a22}
.buy .amz:hover{background:#f0a52e;border-color:#c97a00;color:#131a22}
.buy .bn{background:#046a38;border-color:#046a38;color:#fff}
.buy .bn:hover{background:#058545;border-color:#058545;color:#fff}

/* the covers carry their own titles, so the shelf is pictures only — the list under it
   does the naming */
.shelf{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:10px}
.shelf img{width:100%;height:auto;aspect-ratio:1;object-fit:cover;border-radius:5px;box-shadow:0 10px 22px -14px rgba(15,22,33,.5),0 0 0 1px rgba(15,22,33,.10)}
@media (max-width:860px){.books{grid-template-columns:1fr}.fan{justify-self:start;max-width:280px}.shelf{grid-template-columns:repeat(3,1fr)}}
@media (max-width:460px){.shelf{grid-template-columns:repeat(2,1fr)}}
@media (prefers-reduced-motion:reduce){.fan img{transition:none}a.fanlink:hover .fan img{transform:none}
  a.fanlink:hover .fan img:nth-child(1){transform:translate(-50%,-50%) translate(-27%,-6%) rotate(-9deg)}
  a.fanlink:hover .fan img:nth-child(2){transform:translate(-50%,-50%) translate(27%,-3%) rotate(8deg)}
  a.fanlink:hover .fan img:nth-child(3){transform:translate(-50%,-50%) translate(0,6%) rotate(-1deg)}}
/* ---------- the hero lens: three circles, one round ----------
   Layers, outside in: .lc = pointer parallax (--mx/--my set in JS, per-circle depth),
   .ld = entry + idle drift (CSS only), .lh = hover/focus lift. Keeping them on separate
   groups means four independent motions never fight over one transform. */
.lens{display:flex;flex-direction:column;gap:20px;align-items:center}
.lstack{position:relative;width:100%;max-width:430px;--mx:0;--my:0}
.lensvg{width:100%;height:auto;overflow:visible;isolation:isolate}
.lpaint circle{mix-blend-mode:multiply;fill-opacity:.72}
.lensvg text{font-family:var(--wm);fill:#fff}
.lensvg .lw{font-size:23px;font-weight:800;letter-spacing:-.012em}
.lcore text{font-size:25px;font-weight:800;letter-spacing:.02em;fill:#fff}
.lc{transform:translate(calc(var(--mx) * var(--d) * 1px),calc(var(--my) * var(--d) * 1px));transition:transform .5s cubic-bezier(.2,.7,.2,1),opacity .45s ease}
.lc.v{--d:10}.lc.e{--d:16}.lc.n{--d:22}
.lh{transform-box:fill-box;transform-origin:center;transform:scale(1);transition:transform .45s cubic-bezier(.2,.8,.2,1)}
.lcore{opacity:0;animation:lensCore 1.1s ease 1.85s both}
@keyframes lensCore{from{opacity:0}to{opacity:1}}

/* entry, then a slow idle drift. The drift is declared second so it wins once it starts. */
.ld{animation:lensInV 1.7s cubic-bezier(.16,.86,.28,1) both,lensDriftV 17s ease-in-out 2.1s infinite alternate}
.e .ld{animation:lensInE 1.7s cubic-bezier(.16,.86,.28,1) .12s both,lensDriftE 21s ease-in-out 2.1s infinite alternate}
.n .ld{animation:lensInN 1.7s cubic-bezier(.16,.86,.28,1) .24s both,lensDriftN 19s ease-in-out 2.1s infinite alternate}
@keyframes lensInV{from{transform:translate(0,-64px)}to{transform:none}}
@keyframes lensInE{from{transform:translate(-58px,44px)}to{transform:none}}
@keyframes lensInN{from{transform:translate(58px,44px)}to{transform:none}}
@keyframes lensDriftV{from{transform:translate(0,-5px)}to{transform:translate(3px,4px)}}
@keyframes lensDriftE{from{transform:translate(-5px,3px)}to{transform:translate(4px,-4px)}}
@keyframes lensDriftN{from{transform:translate(5px,3px)}to{transform:translate(-4px,-3px)}}

/* the hit targets sit over each circle's outer lobe, where its letter is */
.lhit{position:absolute;inset:0}
.lb{position:absolute;width:27%;aspect-ratio:1;transform:translate(-50%,-50%);border:0;padding:0;margin:0;
  background:transparent;border-radius:50%;cursor:pointer;-webkit-tap-highlight-color:transparent}
.lb:focus-visible{box-shadow:0 0 0 3px var(--chalk),0 0 0 6px var(--ink)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* one letter chosen: it lifts, the other two step back */
.lens[data-on] .lc{opacity:.24}
.lens[data-on="v"] .lc.v,.lens[data-on="e"] .lc.e,.lens[data-on="n"] .lc.n{opacity:1}
.lens[data-on="v"] .v .lh,.lens[data-on="e"] .e .lh,.lens[data-on="n"] .n .lh{transform:scale(1.055)}
.lens[data-on] .lcore{opacity:.25}
.lcap{margin:0;max-width:38ch;text-align:center;color:var(--ink-2);font-size:16.5px;line-height:1.5;min-height:3em}
.lcap em{font-style:italic;font-weight:700;color:var(--ink)}
.lcap b{font-weight:800;color:var(--ink)}

/* a slow drift as the page scrolls past — off the compositor, no scroll listener */
@supports (animation-timeline:view()){
  @media (prefers-reduced-motion:no-preference){
    .lstack{animation:lensRise linear both;animation-timeline:view();animation-range:cover 0% cover 100%}
    @keyframes lensRise{from{transform:translateY(14px)}to{transform:translateY(-38px)}}
  }
}
@media (max-width:860px){.lstack{max-width:330px}.lcap{min-height:0}}

@media (prefers-reduced-motion:reduce){
  .ld,.e .ld,.n .ld{animation:none}
  .lc{transform:none;transition:opacity .15s ease}
  .lh{transition:none;transform:none}
  .lcore{animation:none;opacity:1}
  .lens[data-on="v"] .v .lh,.lens[data-on="e"] .e .lh,.lens[data-on="n"] .n .lh{transform:none}
}
.rstep .letter span{font-family:var(--mono);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.rstep p{color:var(--ink-2);max-width:40ch}
.mini{aspect-ratio:16/9;background:var(--panel);color:var(--panel-ink);border-radius:8px;container-type:inline-size;position:relative;overflow:hidden;box-shadow:0 0 0 1.5px var(--panel-bezel),0 20px 40px -30px rgba(15,22,33,.4);font-family:var(--stagef)}
.mini .st{opacity:1;pointer-events:none}

/* ---------- evidence ---------- */
.ev{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(28px,5vw,72px);align-items:start}
@media (max-width:860px){.ev{grid-template-columns:1fr}}
.evtable{width:100%;border-collapse:collapse;font-size:17px}
.evtable th,.evtable td{padding:16px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:baseline}
.evtable thead th{font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);font-weight:500;border-bottom-color:var(--ink)}
.evtable td.n{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:26px;font-weight:500;letter-spacing:-.01em;white-space:nowrap}
.evtable td.n.ctl{color:var(--ink-3);font-size:20px}
.evtable th small{display:block;font-size:14px;color:var(--ink-3);margin-top:3px;font-family:var(--wm);font-weight:400}
.evtable tbody th{font-weight:700;color:var(--ink)}
.fn{font-size:14.5px;line-height:1.55;color:var(--ink-3);max-width:60ch}
.fn a{color:var(--ink-2)}
.dark .evtable th,.dark .evtable td{border-bottom-color:rgba(255,255,255,.14)}
.dark .evtable thead th{border-bottom-color:rgba(255,255,255,.6);color:var(--stage-dim)}
.dark .evtable td.n.ctl,.dark .evtable th small,.dark .fn{color:var(--stage-dim)}
.dark .evtable tbody th{color:var(--stage-ink)}
.dark .fn a{color:#CBD5E1}

/* ---------- try a round ---------- */
.try{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,5vw,72px);align-items:center}
@media (max-width:860px){.try{grid-template-columns:1fr}}
.tstage{aspect-ratio:16/10;background:var(--panel);border-radius:12px;position:relative;overflow:hidden;container-type:inline-size;font-family:var(--stagef);color:var(--panel-ink);box-shadow:0 0 0 2px var(--panel-bezel),0 24px 50px -34px rgba(15,22,33,.5)}
.tstage .st{pointer-events:auto}
.tstage .col{cursor:pointer;background:transparent;-webkit-appearance:none;appearance:none}
.tstage .col:hover{transform:scale(1.05);background:color-mix(in srgb,var(--c) 14%,transparent)}
.tstage .col:focus-visible{box-shadow:0 0 0 1cqw #fff}
.tstage .again{margin-top:4cqw;font:600 2.4cqw/1 var(--wm);color:var(--panel-dim);background:none;border:0;cursor:pointer;text-decoration:underline;text-underline-offset:.2em}
.tstage .again:hover{color:#fff}

/* ---------- audience split ---------- */
.aud{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,32px)}
@media (max-width:860px){.aud{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:clamp(24px,3.2vw,40px);display:flex;flex-direction:column;gap:18px}
.card.ink{background:var(--ink);color:#fff;border-color:var(--ink)}
.card.ink .muted,.card.ink .eyebrow{color:rgba(255,255,255,.7)}
.card ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}
.card li{padding-left:24px;position:relative;color:var(--ink-2)}
.card.ink li{color:rgba(255,255,255,.85)}
.card li::before{content:"";position:absolute;left:0;top:.62em;width:12px;height:2px;background:currentColor;opacity:.55}
.card .ctas{margin-top:auto;padding-top:8px}
.price{font-family:var(--mono);font-size:34px;font-weight:500;letter-spacing:-.02em;line-height:1}
.price small{font-family:var(--wm);font-size:15px;font-weight:600;color:var(--ink-3);margin-left:8px;letter-spacing:0}
.card.ink .price small{color:rgba(255,255,255,.7)}

/* ---------- essay teaser + quote ---------- */
.quote{font-size:clamp(24px,3vw,38px);line-height:1.25;font-weight:600;letter-spacing:-.015em;max-width:26ch;text-wrap:balance}
.quote + .by{margin-top:18px}
.by{font-family:var(--mono);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.teaser{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:end}
@media (max-width:860px){.teaser{grid-template-columns:1fr}}
.teaser .prose p{font-size:19px}

/* ---------- CTA band + footer ---------- */
.band{padding:var(--sec) 0}
.band .inner{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:28px}
.band h2{max-width:16ch}
.ftr{padding:56px 0 40px;border-top:1px solid rgba(255,255,255,.12)}
.ftr .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
@media (max-width:860px){.ftr .cols{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.ftr .cols{grid-template-columns:1fr}}
.ftr h4{font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--stage-dim);font-weight:500;margin-bottom:14px}
.ftr ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.ftr a{text-decoration:none;color:#CBD5E1;font-size:15.5px}
.ftr a:hover{color:#fff;text-decoration:underline}
.ftr .about{color:var(--stage-dim);font-size:15px;max-width:38ch;margin-top:18px;line-height:1.5}
.ftr .legal{margin-top:20px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:13.5px;color:var(--stage-dim)}
.ftr .legal a{font-size:13.5px;color:var(--stage-dim)}

/* ---------- reading pages ---------- */
.doc{padding:clamp(40px,6vw,80px) 0 var(--sec)}
.doc-head{max-width:760px;margin-bottom:clamp(36px,5vw,64px)}
.doc-head h1{font-size:clamp(38px,5.4vw,72px)}
.doc-head .std{margin-top:22px;font-size:clamp(19px,1.6vw,23px);color:var(--ink-2);line-height:1.45;text-wrap:pretty}
.doc-head .meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:8px 20px;font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.doc-head .meta a{color:var(--ink-2)}
.doc-head .dl{margin-top:24px}
.prose{max-width:68ch;font-size:19px;line-height:1.62}
.prose>*+*{margin-top:1.25em}
.prose h2{font-size:clamp(28px,3.2vw,40px);margin-top:2.4em;letter-spacing:-.02em}
.prose h3{font-size:clamp(21px,2vw,25px);margin-top:1.9em}
.prose h4{margin-top:1.6em;font-size:19px}
.prose p{text-wrap:pretty}
.prose ul,.prose ol{padding-left:1.3em}
.prose li+li{margin-top:.45em}
.prose blockquote{margin:1.6em 0;padding:4px 0 4px 22px;border-left:3px solid var(--line-2);color:var(--ink-2)}
.prose blockquote p+p{margin-top:.9em}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.6em 0}
.prose code{font-family:var(--mono);font-size:.86em;background:var(--tint);padding:.12em .4em;border-radius:4px}
.prose pre{background:var(--stage);color:var(--stage-ink);padding:22px 24px;border-radius:10px;overflow-x:auto;font-family:var(--mono);font-size:15px;line-height:1.55}
.prose pre code{background:none;padding:0;font-size:inherit;color:inherit}
.prose table{width:100%;border-collapse:collapse;font-size:16.5px;margin:1.6em 0}
.prose th,.prose td{text-align:left;vertical-align:top;padding:10px 12px 10px 0;border-bottom:1px solid var(--line)}
.prose th{font-family:var(--mono);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:500}
.prose .tablewrap{overflow-x:auto}
.prose sup{line-height:0;font-size:.72em}
.prose sup a{text-decoration:none;font-family:var(--mono);color:var(--ink-2)}
.prose .notes{font-size:15.5px;color:var(--ink-2)}
.prose .notes ol{padding-left:1.6em}
.prose .notes li{margin-top:.7em;overflow-wrap:anywhere}
.prose .notes a.back{text-decoration:none;margin-left:6px;color:var(--ink-3)}
.prose em{font-style:italic}
.prose .bio{font-size:16.5px;color:var(--ink-2);border-top:1px solid var(--line);padding-top:1.4em}
.prose .drop::first-letter{font-size:3.1em;font-weight:800;float:left;line-height:.82;padding:6px 10px 0 0;letter-spacing:-.02em}
.toc{position:sticky;top:96px;font-size:14.5px;line-height:1.5}
.toc ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.toc a{text-decoration:none;color:var(--ink-3)}
.toc a:hover,.toc a.on{color:var(--ink)}
.toc .eyebrow{margin-bottom:12px}
.docgrid{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:clamp(32px,5vw,96px);align-items:start}
@media (max-width:980px){.docgrid{grid-template-columns:1fr}.toc{position:static;display:none}}

/* ---------- generic content blocks ---------- */
.two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,64px);align-items:start}
@media (max-width:860px){.two{grid-template-columns:1fr}}
.defs{display:grid;gap:22px 32px;grid-template-columns:max-content 1fr;align-items:baseline;font-size:17px}
@media (max-width:640px){.defs{grid-template-columns:1fr;gap:6px 0}.defs dd{margin:0 0 16px}}
.defs dt{font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.defs dd{margin:0;color:var(--ink-2);max-width:60ch}
.faq details{border-top:1px solid var(--line);padding:6px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px;padding:16px 0;font-weight:700;font-size:18px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--ink-3);font-weight:400;font-size:22px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 0 18px;color:var(--ink-2);max-width:66ch}
.faq .a p+p{margin-top:.8em}
.list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:14px}
.list li{padding-left:28px;position:relative;color:var(--ink-2)}
.list li::before{content:"";position:absolute;left:0;top:.66em;width:14px;height:2px;background:var(--ink);opacity:.45}
.list li b{color:var(--ink)}
.cmp{width:100%;border-collapse:collapse;font-size:16.5px}
.cmp th,.cmp td{text-align:left;vertical-align:top;padding:16px 16px 16px 0;border-bottom:1px solid var(--line)}
.cmp thead th{font-family:var(--mono);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:500;border-bottom-color:var(--ink)}
.cmp td:first-child{font-weight:700;color:var(--ink);width:22%}
.cmp td{color:var(--ink-2)}
.assets{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:860px){.assets{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.assets{grid-template-columns:1fr}}
.asset{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--paper)}
.asset .pv{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;padding:24px}
.asset .pv.ink{background:var(--ink)}
.asset .pv.chalk{background:var(--chalk)}
.asset .pv svg{height:64px;width:auto}
.asset .meta{padding:14px 16px;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:14.5px}
.asset .meta a{font-family:var(--mono);font-size:13px}
.kicker{display:flex;flex-wrap:wrap;gap:10px 28px;font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.kicker b{color:var(--ink);font-weight:500}
.notice{border:1px solid var(--line-2);border-radius:10px;padding:18px 22px;background:var(--paper);font-size:16px;color:var(--ink-2)}
.notice b{color:var(--ink)}

/* ---------- reveal on scroll (quiet) ---------- */
@media (prefers-reduced-motion:reduce){
  .st{transition:none}
  .st .ring::after{animation:none}
  .btn{transition:none}
}
@media print{.hdr,.ftr,.band,.roomctl{display:none}body{background:#fff}.prose{max-width:none}}