/* Hive Workshops — "render3d" event page theme (events.page_theme = 'render3d'): "Build a 3D Website with Three.js, RAG and Claude Opus". Obsidian studio: near-black indigo, violet + amber, cyan only for retrieval hits.
   PERF RULES: HTML layer = transform and opacity only; no parallax, scroll listeners, blur or blend layers, animated shadows/filters/gradients, snap scrolling.
   The ONE documented exception is the single fixed WebGL canvas #r3-canvas (GPU-composited). Reveals: html.r3-pre arms them (set in <head>, removed after 3.5 s if the loader never runs) so the page reads with JS/3D off. */
@font-face{font-family:'Inter';font-style:normal;font-weight:100 900;font-display:swap;src:url(../fonts/inter-latin-wght.woff2) format('woff2')}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(../fonts/space-grotesk-latin-wght.woff2) format('woff2')}
:root,body.pg-render3d{
  --bg:#0A0C18;--bg2:#11142A;--panel:rgba(14,17,36,.82);--panel-s:#0E1124;--ink:#ECEAF6;--mute:#A7A6BE;--violet:#7C3AED;--violet-2:#A78BFA;--amber:#F5B544;--amber-2:#FFD37A;--cyan:#4FD1E0;--rose:#F472B6;
  --line:rgba(236,234,246,.14);--grid:rgba(167,139,250,.12);--field:#12162E;--field-line:rgba(236,234,246,.28);
  --disp:'Space Grotesk','Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;--sans:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);--sab:env(safe-area-inset-bottom,0px);--gut:clamp(16px,5vw,72px);--hh:56px;
}
html{scroll-behavior:auto;scroll-padding-top:calc(var(--hh) + 12px);background:#0A0C18;color-scheme:dark;-webkit-text-size-adjust:100%}   /* base.css sets smooth: it fights the damped timeline */
body.pg-render3d{margin:0;color-scheme:dark;background:transparent;color:var(--ink);font:400 17px/1.7 var(--sans);overflow-x:clip;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;-webkit-tap-highlight-color:transparent}
.pg-render3d *,.pg-render3d *::before,.pg-render3d *::after{box-sizing:border-box}
.pg-render3d main{display:block;background:transparent}
.pg-render3d a{color:inherit;text-underline-offset:3px}
.pg-render3d a:hover{text-decoration:underline}
.pg-render3d :focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}
.pg-render3d .skip{background:var(--violet);color:#fff;z-index:1000}
:where(.pg-render3d) :is(h1,h2,h3){margin:0;font-family:var(--disp);font-weight:500;letter-spacing:-.02em;color:var(--ink)}
:where(.pg-render3d) p{margin:0 0 1.1em}
:where(.pg-render3d) figure{margin:0}
:where(.pg-render3d) img{display:block;max-width:100%;height:auto}
.pg-render3d em{font-style:normal;color:var(--amber-2)}
.pg-render3d b{font-weight:600}
.r3-i{flex:none}
.r3-mono{font-family:var(--mono)}
.r3-wrap{width:100%;max-width:1240px;margin:0 auto;padding-inline:var(--gut)}

/* ---------- the one canvas + the static poster (fallback and first paint) ---------- */
#r3-canvas{position:fixed;inset:0;width:100%;height:100lvh;z-index:0;opacity:0;transition:opacity .9s;pointer-events:none;display:block}
html.r3-live #r3-canvas{opacity:1}
.r3-poster{position:fixed;inset:0;height:100lvh;z-index:-1;background:var(--bg);pointer-events:none}
.r3-poster picture{display:block;width:100%;height:100%}
.r3-poster img{width:100%;height:100%;object-fit:cover;opacity:.55}
html.r3-live .r3-poster{opacity:0;transition:opacity .2s .95s}
@supports not (height:100lvh){#r3-canvas,.r3-poster{height:100vh}}   /* fallback only */

/* ---------- header (solid, no blur) ---------- */
.r3-head{position:sticky;top:0;z-index:50;height:var(--hh);display:flex;align-items:center;gap:14px;padding:0 max(var(--gut),env(safe-area-inset-right)) 0 max(var(--gut),env(safe-area-inset-left));background:var(--bg);border-bottom:1px solid var(--line)}
.r3-brand{display:inline-flex;align-items:center;gap:10px;font:600 16px/1 var(--disp);letter-spacing:-.01em;text-decoration:none!important;color:var(--ink)}
.r3-brand span:last-child{white-space:nowrap}
@media (max-width:540px){.r3-brand span:last-child{display:none}}
.r3-mark{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--violet);color:#fff}
.r3-nav{display:none;margin-left:auto;gap:22px}
.r3-nav a{font:500 13px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;text-decoration:none!important;color:var(--mute);padding:14px 2px}
.r3-nav a:hover{color:var(--ink)}
.r3-head .r3-tog{margin-left:auto}
.r3-head .r3-btn{margin-left:0}
@media (min-width:900px){.r3-nav{display:flex}.r3-head .r3-tog{margin-left:0}}
.r3-tog{display:none;align-items:center;gap:8px;min-height:44px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--ink);font:500 12px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap;cursor:pointer;-webkit-appearance:none;appearance:none}
html[class*="r3-tier-"] .r3-tog{display:inline-flex}
.r3-tog-d{width:8px;height:8px;border-radius:50%;background:var(--mute)}
.r3-tog[aria-pressed="true"] .r3-tog-d{background:var(--amber)}
@media (max-width:420px){.r3-tog-t{max-width:5.5em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}

/* ---------- buttons / chips ---------- */
.r3-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 24px;border:1px solid var(--violet);border-radius:999px;background:var(--violet);color:#fff!important;font:600 14px/1 var(--sans);letter-spacing:.02em;text-decoration:none!important;cursor:pointer;-webkit-appearance:none;appearance:none;transition:background-color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease)}
.r3-btn:hover{background:#6D28D9;border-color:#6D28D9}
.r3-btn:active{transform:scale(.98)}
.r3-btn-sm{min-height:44px;padding:0 18px;font-size:13px}
.r3-btn-ghost{background:transparent;border-color:var(--field-line);color:var(--ink)!important}
.r3-btn-ghost:hover{background:rgba(236,234,246,.08);border-color:var(--ink)}
.r3-btn-block{width:100%}
.r3-btn[disabled]{opacity:.6;cursor:default}
.r3-head .r3-btn-sm span{white-space:nowrap}
@media (max-width:520px){.r3-head .r3-btn-sm{padding:0 14px}}
.r3-chip{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:999px;font:500 13px/1.2 var(--mono);color:var(--mute)}
.r3-chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 1.2em;padding:0;list-style:none}
.r3-chips li{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border:1px solid var(--line);border-radius:999px;font:500 13px/1.3 var(--mono);color:var(--ink)}
.r3-chips li i{width:10px;height:10px;border-radius:50%;flex:none}
.r3-facts li{color:var(--mute)}
.r3-facts li b{color:var(--amber-2);font-weight:600}
.r3-facts li .r3-i{color:var(--violet-2);width:18px;height:18px}

/* ---------- stations ---------- */
#r3-stage{position:relative}
.r3-st{position:relative;padding:calc(var(--hh) + 10svh) 0 14svh;min-height:calc(var(--len,160svh) * .78)}
.r3-panel{position:relative;z-index:1;margin:0 var(--gut);padding:26px 22px;background:var(--panel);border:1px solid var(--line);border-radius:16px}
.r3-wide{max-width:1060px}
@media (min-width:900px){
  .r3-st{min-height:var(--len,160svh);padding-top:calc(var(--hh) + 6svh)}
  .r3-panel{margin-left:var(--gut);margin-right:0;max-width:calc(46ch + 72px);padding:34px 36px;position:sticky;top:calc(var(--hh) + 5svh)}
  .r3-panel.r3-wide{max-width:1060px;position:relative;top:auto}
}
@media (min-width:900px) and (max-height:760px){.r3-panel{position:relative;top:auto}}
/* narrow + tablet: the 3D scene sits right behind the stacked panels, so the panel is near-opaque (hero lattice / cloud must not read through the text) */
@media (max-width:899px){.r3-panel{background:rgba(14,17,36,.96)}}
.r3-btn[hidden]{display:none}
#main:focus{outline:none}
.r3-s0{padding-top:calc(var(--hh) + 5svh)}
.r3-kicker{margin:0 0 14px;font:500 12px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--violet-2)}
.r3-h1{font-size:clamp(40px,7vw,88px);line-height:1.02;letter-spacing:-.02em;font-weight:600;margin:0 0 .35em}
.r3-hero{max-width:min(calc(100% - 2 * var(--gut)),780px)}
@media (min-width:900px){.r3-hero{max-width:min(calc(100% - 2 * var(--gut)),820px)}}
.r3-h2{font-size:clamp(28px,4.2vw,48px);line-height:1.1;margin:0 0 .3em}
.r3-rule{display:block;width:72px;height:2px;margin:0 0 20px;background:linear-gradient(90deg,var(--violet-2),var(--amber));transform-origin:left}
.r3-lead{font-size:17px;line-height:1.7;color:var(--ink)}
.r3-eyebrow{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;margin:0 0 22px;font:500 12px/1.4 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--amber-2)}
.r3-sep{width:4px;height:4px;border-radius:50%;background:var(--violet-2);flex:none}
.r3-cta{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 28px}
.r3-band{display:grid;gap:12px;margin:0 0 18px;padding:18px 0 0;border-top:1px solid var(--line);list-style:none}
.r3-band li{display:flex;gap:12px;align-items:flex-start;color:var(--violet-2)}
.r3-band li span{display:block}
.r3-band b{display:block;font:500 12px/1.2 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink);margin-bottom:3px}
.r3-band small{display:block;font:400 14px/1.45 var(--sans);color:var(--mute)}
@media (min-width:700px){.r3-band{grid-template-columns:repeat(3,1fr);gap:20px}}
.r3-cap{margin:20px 0 0;padding-top:14px;border-top:1px solid var(--line);font-size:14px;line-height:1.55;color:var(--mute)}
.r3-cap span{display:block;margin-bottom:4px;font:500 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--amber)}
.r3-scroll{display:flex;align-items:center;gap:10px;margin:18px 0 0;font:500 11px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--mute)}
.r3-scroll span{width:1px;height:26px;background:var(--violet-2);animation:r3-pulse 2.4s ease-in-out infinite}
@keyframes r3-pulse{0%,100%{opacity:.25}50%{opacity:1}}
.r3-rise{animation:r3-rise .9s var(--ease) both;animation-delay:calc(var(--i,0) * 90ms)}
@keyframes r3-rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.r3-list{margin:0 0 1.2em;padding:0 0 0 1.1em}
.r3-list li{margin:0 0 .55em;padding-left:.2em}
.r3-list li::marker{color:var(--amber)}
.r3-small{font-size:14px;line-height:1.6;color:var(--mute)}

/* S3 retrieval */
.r3-qs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}
.r3-q,.r3-set{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border:1px solid var(--field-line);border-radius:999px;background:transparent;color:var(--ink);font:500 14px/1.2 var(--sans);cursor:pointer;-webkit-appearance:none;appearance:none;transition:background-color .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease)}
.r3-q:hover,.r3-set:hover{border-color:var(--ink)}
.r3-q[aria-pressed="true"]{background:var(--amber);border-color:var(--amber);color:#1A1204}
.r3-set[aria-pressed="true"]{background:var(--violet);border-color:var(--violet);color:#fff}
.r3-ctxbox{padding:16px 18px;border:1px solid rgba(79,209,224,.35);border-radius:12px;background:rgba(79,209,224,.05)}
.r3-ctxh{margin:0 0 10px;font:500 12px/1.3 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}
#r3-ctx{margin:0 0 12px;padding:0 0 0 1.3em;font-size:15px;line-height:1.55;color:var(--ink)}
#r3-ctx li{margin:0 0 6px}
#r3-ctx li::marker{color:var(--cyan);font:500 12px var(--mono)}
.r3-demo{margin:0;font:400 12px/1.5 var(--mono);color:var(--mute)}

/* S4 prompt / answer cards (the engine toggles .on on .r3-tok by scroll progress; visible by default) */
.r3-cards{display:grid;gap:12px}
.r3-code{padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--panel-s)}
.r3-code figcaption{margin:0 0 8px;font:500 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--violet-2)}
.r3-code p,.r3-code pre{margin:0;font-size:13px;line-height:1.65;color:var(--ink);white-space:pre-wrap;overflow-wrap:anywhere}
.r3-tok{transition:opacity .35s var(--ease)}
.r3-live .r3-tok{opacity:.56}
.r3-live .r3-tok.on{opacity:1}
#r3-answer .r3-tok{display:block}

/* S6 playground */
.r3-playgrid{display:grid;gap:18px}
.r3-playgrid .r3-panel{max-width:none}
.r3-ctls{display:grid;gap:12px;margin:0 0 16px}
.r3-ctl{display:grid;gap:6px}
.r3-ctl-l{font:500 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--mute)}
.r3-ctl-b{display:flex;flex-wrap:wrap;gap:8px}
.r3-help{margin:0;padding:0;list-style:none;font-size:14px;line-height:1.55;color:var(--mute)}
.r3-help li{margin:0 0 4px}
.r3-playstage{position:relative;z-index:1;margin:0 var(--gut)}
#r3-orbit{position:relative;display:flex;align-items:flex-end;justify-content:center;aspect-ratio:1/1;width:100%;border:1px solid var(--line);border-radius:16px;touch-action:pan-y;cursor:grab;pointer-events:auto;outline-offset:3px;-webkit-user-select:none;user-select:none}
#r3-orbit:active{cursor:grabbing}
.r3-orbit-hint{margin-bottom:16px;padding:6px 12px;border-radius:999px;background:var(--panel);font:500 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--mute)}
.r3-hud{display:flex;flex-wrap:wrap;gap:4px 14px;margin:14px 0 0;padding:8px 12px;background:var(--panel);border-radius:10px;font-size:12px;line-height:1.4;color:var(--mute)}
.r3-hud b{color:var(--amber-2);font-weight:500}
@media (max-width:699px){.r3-hud span:nth-child(2),.r3-hud span:nth-child(3),.r3-hud span:nth-child(5),.r3-hud span:nth-child(6){display:none}}
@media (min-width:900px){
  .r3-playgrid{grid-template-columns:minmax(0,calc(46ch + 72px)) minmax(0,1fr);gap:40px;align-items:start;min-height:calc(var(--len,180svh) - 14svh);margin-inline:var(--gut) var(--gut)}
  .r3-playgrid .r3-panel{margin:0;max-width:calc(46ch + 72px)}
  .r3-playstage{margin:0;position:sticky;top:calc(var(--hh) + 5svh)}
  #r3-orbit{aspect-ratio:auto;height:min(68svh,640px)}
}

/* S7 syllabus */
.r3-syl{display:grid;gap:10px;margin:22px 0 14px;padding:0;list-style:none}
.r3-syl li{padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:rgba(236,234,246,.03)}
.r3-n{display:block;margin-bottom:8px;font:500 12px/1 var(--mono);letter-spacing:.16em;color:var(--amber)}
.r3-syl h3{margin:0 0 6px;font-size:18px;line-height:1.25;letter-spacing:-.01em}
.r3-syl p{margin:0;font-size:14px;line-height:1.55;color:var(--mute)}
@media (min-width:700px){.r3-syl{grid-template-columns:1fr 1fr}}
@media (min-width:1100px){.r3-syl{grid-template-columns:repeat(4,1fr)}}
.r3-who{display:grid;gap:20px;margin:26px 0 8px;align-items:start}
.r3-who h3{margin:0 0 10px;font-size:20px}
@media (min-width:760px){.r3-who{grid-template-columns:1.3fr 1fr}}
.r3-fig{margin:18px 0 0}
.r3-fig img{width:100%;border-radius:12px;border:1px solid var(--line)}
.r3-fig figcaption{margin-top:8px;font:400 11px/1.4 var(--mono);letter-spacing:.08em;color:var(--mute)}
.r3-fig-still,.r3-fig-hero{max-width:420px}
.r3-fig-still{margin-top:0}

/* S8 waitlist */
.r3-s8{min-height:100svh;padding-bottom:12svh}
.r3-joingrid{display:grid;gap:22px;margin-inline:var(--gut);position:relative;z-index:1}
.r3-joingrid .r3-panel{margin:0;max-width:none;position:relative;top:auto}
.r3-formcard{padding:24px 20px;background:var(--panel);border:1px solid var(--line);border-radius:16px}
@media (min-width:980px){.r3-joingrid{grid-template-columns:.8fr 1.2fr;gap:36px;align-items:start}.r3-formcard{padding:34px 36px}}
.r3-form{display:grid;gap:16px}
.r3-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.r3-row{display:grid;gap:16px}
@media (min-width:640px){.r3-row{grid-template-columns:1fr 1fr}}
.r3-fld label,.r3-fs legend{display:block;margin-bottom:6px;font:500 13px/1.3 var(--sans);letter-spacing:.02em;color:var(--ink);padding:0}
.r3-fld label b,.r3-fs legend b,.r3-consent b{color:var(--amber)}
.r3-fld input,.r3-fld select{display:block;width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--field-line);border-radius:12px;background:var(--field);color:var(--ink);font:400 max(16px,1em)/1.3 var(--sans);-webkit-appearance:none;appearance:none;border-radius:12px}
.r3-fld select{padding-right:42px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1.5l6 6 6-6' fill='none' stroke='%23A7A6BE' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;background-size:14px 9px}
.r3-fld input::placeholder{color:#7C7B97}
.r3-fld input:focus,.r3-fld select:focus{outline:2px solid var(--amber);outline-offset:1px;border-color:var(--amber)}
.r3-fs{margin:0;padding:0;border:0;min-width:0}
.r3-opts{display:flex;flex-wrap:wrap;gap:10px}
.r3-opt{position:relative;cursor:pointer}
.r3-opt input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}
.r3-opt span{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border:1px solid var(--field-line);border-radius:999px;font:500 14px/1.2 var(--sans);color:var(--ink);background:var(--field);transition:background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease)}
.r3-opt input:checked+span{background:var(--violet);color:#fff;border-color:var(--violet)}
.r3-opt input:focus-visible+span{outline:2px solid var(--amber);outline-offset:2px}
.r3-consent{display:flex;gap:12px;align-items:flex-start;font-size:13.5px;line-height:1.55;color:var(--mute);cursor:pointer}
.r3-consent input{flex:none;width:22px;height:22px;margin:1px 0 0;accent-color:var(--violet);cursor:pointer}
.r3-consent a{color:var(--violet-2)}
.r3-msg{min-height:1.4em;margin:0;font-size:14px;color:var(--mute)}
.r3-msg.err{color:#FF9DB8}
.r3-done{text-align:center;padding:24px 8px}
.r3-done[hidden]{display:none}
.r3-done h3{margin:12px 0 8px;font-size:26px}
.r3-done p{margin:0;color:var(--mute)}

/* ---------- after the stage: solid background; FAQ + closing + footer ---------- */
#r3-end{height:1px;width:1px}
.r3-after{position:relative;z-index:2;background:radial-gradient(circle,var(--grid) 1px,transparent 1.5px) 0 0/28px 28px,var(--bg)}
.r3-sec{padding:84px 0 70px}
.r3-faqw{display:grid;gap:28px}
@media (min-width:900px){.r3-faqw{grid-template-columns:.7fr 1.3fr;gap:64px}}
#faq,.r3-closing{content-visibility:auto;contain-intrinsic-size:auto 700px}
.r3-acc{border-top:1px solid var(--line)}
.r3-acc:last-child{border-bottom:1px solid var(--line)}
.r3-acc summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:44px;padding:18px 0;font:500 clamp(17px,2vw,20px)/1.35 var(--disp);color:var(--ink)}
.r3-acc summary::-webkit-details-marker{display:none}
.r3-acc summary i{position:relative;flex:none;width:18px;height:18px}
.r3-acc summary i::before,.r3-acc summary i::after{content:"";position:absolute;left:0;top:50%;width:18px;height:2px;border-radius:2px;background:var(--amber)}
.r3-acc summary i::after{transform:rotate(90deg);transition:transform .3s var(--ease)}
.r3-acc[open] summary i::after{transform:rotate(0)}
.r3-acc-b{padding:0 0 20px;max-width:62ch}
.r3-acc-b p{margin:0;color:var(--mute)}
.r3-closing{padding:44px 0 40px;border-top:1px solid var(--line);background:rgba(10,12,24,.9)}
.r3-share{display:flex;gap:16px;flex-wrap:wrap}
.r3-share a{font:500 13px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--amber-2)!important;text-decoration:none!important;padding:14px 4px;border-bottom:1px solid var(--line)}
.r3-credit{margin:28px 0 0;font-size:13px;line-height:1.65;color:var(--mute);max-width:78ch}
.pg-render3d .pub-footer{position:relative;z-index:2;background:#070914;color:var(--mute);border-top:1px solid var(--line);padding:26px var(--gut);display:flex;flex-wrap:wrap;gap:16px 40px;align-items:center;font-size:13px}
.pg-render3d .pub-footer .muted,.pg-render3d .pub-footer small{color:var(--mute)}
.pg-render3d .pub-footer a{color:var(--amber-2);margin-right:14px}
.pg-render3d .pub-footer .logo-mark{display:none}
.has-cta-bar .pub-footer{padding-bottom:calc(92px + var(--sab))}
@media (min-width:900px){.has-cta-bar .pub-footer{padding-bottom:calc(26px + var(--sab))}}

/* ---------- sticky mobile CTA bar (transform-only slide-in; safe-area aware) ---------- */
.r3-bar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:flex;align-items:center;gap:14px;padding:10px max(16px,env(safe-area-inset-right)) calc(10px + var(--sab)) max(16px,env(safe-area-inset-left));background:var(--panel-s);border-top:1px solid var(--line);transform:translateY(110%);transition:transform .55s var(--ease);visibility:hidden}
.r3-bar.show{transform:none;visibility:visible}
.r3-bar-i{flex:1;min-width:0}
.r3-bar-i b{display:block;font:600 13px/1.3 var(--sans);color:var(--ink)}
.r3-bar .r3-btn{flex:none;min-height:46px;padding:0 20px;font-size:13px}
@media (min-width:900px){.r3-bar{display:none}}

/* ---------- reveals (one IntersectionObserver; armed by html.r3-pre) ---------- */
.r3-pre .rv{opacity:0;transform:translateY(24px)}
.r3-pre .rv:not(.in){will-change:opacity,transform}
.rv{transition:opacity .9s var(--ease) calc(var(--i,0) * 90ms),transform .9s var(--ease) calc(var(--i,0) * 90ms)}
.r3-pre .rv.in{opacity:1;transform:none}
.r3-pre .r3-rule.rv{opacity:1;transform:scaleX(0)}
.r3-pre .r3-rule.rv.in{transform:scaleX(1)}
.r3-rule.rv{transition:transform 1.1s var(--ease) .1s}

@media (prefers-reduced-motion:reduce){
  .r3-rise,.r3-scroll span{animation:none!important}
  .rv,.r3-bar,.r3-acc summary i::after,.r3-tok,#r3-canvas,.r3-btn{transition:none!important}
  .r3-pre .rv{opacity:1;transform:none}
  .r3-pre .r3-rule.rv{transform:none}
}

/* light/dark: the page is intentionally dark; pin controls so global tokens never leak in */
.pg-render3d input,.pg-render3d select,.pg-render3d textarea,.pg-render3d button{color-scheme:dark}

/* ja: tighter tracking off, taller lines */
html:lang(ja) .r3-nav a,html:lang(ja) .r3-share a,html:lang(ja) .r3-kicker,html:lang(ja) .r3-eyebrow,html:lang(ja) .r3-btn,html:lang(ja) .r3-tog{letter-spacing:.06em;text-transform:none}
html:lang(ja) .r3-lead,html:lang(ja) .r3-cap,html:lang(ja) .r3-syl p,html:lang(ja) .r3-acc-b p,html:lang(ja) .r3-small,html:lang(ja) .r3-list li{line-height:1.95;letter-spacing:.03em}
html:lang(ja) .r3-h1,html:lang(ja) .r3-h2{letter-spacing:0;line-height:1.3}