@font-face{font-family:"Atkinson Hyperlegible Next";font-weight:400;font-style:normal;font-display:swap;src:url(fonts/atkinson-400.woff2) format("woff2")}
@font-face{font-family:"Atkinson Hyperlegible Next";font-weight:700;font-style:normal;font-display:swap;src:url(fonts/atkinson-700.woff2) format("woff2")}
@font-face{font-family:"Atkinson Hyperlegible Next";font-weight:800;font-style:normal;font-display:swap;src:url(fonts/atkinson-800.woff2) format("woff2")}
@font-face{font-family:"Young Serif";font-weight:400;font-style:normal;font-display:swap;src:url(fonts/young-serif-400.woff2) format("woff2")}

:root{
  --paper:#f4eedf; --paper-hi:#fbf7ee; --card:#fffcf6; --cream:#f1e9d6;
  --ink:#1c2433; --ink2:#465064; --muted:#737b8c; --line:rgba(28,36,51,.13); --line2:rgba(28,36,51,.24);
  --water:#2cb8ea; --waterd:#0a6e96; --wash:#e6f5fb; --yellow:#f6df78; --yellowd:#e9c94a; --sun:#f2a91a; --hot:#e8552b; --good:#2a9d6f;
  --display:"Young Serif",Georgia,"Times New Roman",serif;
  --body:"Atkinson Hyperlegible Next",system-ui,-apple-system,"Segoe UI",sans-serif;
  --sh1:0 1px 0 rgba(28,36,51,.09),0 8px 18px -12px rgba(28,36,51,.38);
  --sh2:0 1px 0 rgba(28,36,51,.1),0 30px 60px -30px rgba(28,36,51,.5),0 10px 24px -18px rgba(120,90,30,.25);
  --ease:cubic-bezier(.2,.8,.2,1); --spring:cubic-bezier(.34,1.4,.64,1);
  --r-lg:26px; --r-md:18px; --r-sm:12px;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;height:100%}
body{margin:0;height:100%;overflow:hidden;color:var(--ink);font:400 1.25rem/1.55 var(--body);-webkit-font-smoothing:antialiased;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .45 0 0 0 0 .38 0 0 0 0 .25 0 0 0 .05 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"),
    radial-gradient(1200px 800px at 28% 18%,rgba(255,255,255,.7),transparent 62%),
    radial-gradient(900px 700px at 80% 100%,rgba(242,169,26,.08),transparent 70%),
    linear-gradient(rgba(28,36,51,.04) 1px,transparent 1px) 0 0/36px 36px,
    linear-gradient(90deg,rgba(28,36,51,.04) 1px,transparent 1px) 0 0/36px 36px,
    var(--paper);}
button{font-family:inherit;color:inherit}
a{color:var(--waterd)}
:focus-visible{outline:4px solid var(--water);outline-offset:3px;border-radius:8px}

/* ---------- layout ---------- */
.app{height:100vh;height:100dvh;display:grid;grid-template-rows:auto minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr)}
.top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 16px;padding-top:calc(10px + env(safe-area-inset-top));position:relative;z-index:6}
.brand{display:flex;align-items:center;gap:10px}
.logo{width:38px;height:38px;flex:none;filter:drop-shadow(0 3px 4px rgba(28,36,51,.18))}
.wordmark{font:400 1.8rem/1 var(--display);letter-spacing:.005em;white-space:nowrap}
.top-actions{display:flex;align-items:center;gap:8px}
.stage{display:grid;grid-template-rows:minmax(0,1fr) auto;min-height:0}
.viewport{position:relative;min-height:0;overflow:hidden;touch-action:none}
.viewport canvas#gl{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;outline-offset:-4px}
.panel{position:relative;z-index:5;background:linear-gradient(180deg,var(--paper-hi),var(--card));border-top:1.5px solid var(--line2);border-radius:24px 24px 0 0;box-shadow:0 -14px 30px -24px rgba(28,36,51,.45);margin-top:-14px;max-height:47vh;max-height:47dvh;overflow:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.panel-body{padding:20px 18px 26px;max-width:720px;margin:0 auto}
@media (min-width:940px){
  .stage{grid-template-columns:minmax(0,1fr) 480px;grid-template-rows:minmax(0,1fr)}
  .panel{margin:6px 14px 14px 0;max-height:none;border:1.5px solid var(--line2);border-radius:var(--r-lg);box-shadow:var(--sh2)}
  .panel-body{padding:28px 30px 34px}
  .wordmark{font-size:2.05rem}
}
@media (max-height:640px) and (max-width:939px){.panel{max-height:54dvh}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:60px;padding:0 24px;border:2px solid var(--ink);border-radius:var(--r-md);background:var(--card);
  font:700 1.18rem/1.15 var(--body);cursor:pointer;box-shadow:var(--sh1);text-decoration:none;color:var(--ink);text-align:center;
  transition:transform .18s var(--spring),box-shadow .18s var(--ease),background-color .15s,color .15s}
.btn svg{width:26px;height:26px;flex:none}
.btn:hover{transform:translateY(-2px);box-shadow:0 1px 0 rgba(28,36,51,.1),0 14px 24px -14px rgba(28,36,51,.5)}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn.primary{background:linear-gradient(180deg,#26324a,var(--ink));color:#fff8e6;border-color:var(--ink)}
.btn.primary:hover{background:linear-gradient(180deg,#2e3c58,#222c40)}
.btn.secondary:hover{background:#fff}
.btn.ghost{background:transparent;box-shadow:none;border-color:var(--line2)}
.btn.ghost:hover{background:rgba(255,252,246,.85);border-color:var(--ink);box-shadow:none}
.btn.small{min-height:46px;padding:0 15px;font-size:1.02rem;border-radius:14px}
.btn.huge{min-height:74px;font-size:1.42rem;padding:0 30px;border-radius:22px;width:100%}
.btn.wide{width:100%;margin-top:12px}
.btn[disabled]{opacity:.32;cursor:default;transform:none;box-shadow:none}
.link{background:none;border:0;padding:8px 2px;font:700 1.02rem var(--body);color:var(--waterd);text-decoration:underline;text-underline-offset:4px;cursor:pointer;min-height:44px}
.lang{display:inline-flex;border:2px solid var(--ink);border-radius:14px;overflow:hidden;background:var(--card)}
.lang button{border:0;background:transparent;min-height:44px;padding:0 14px;font:800 1rem var(--body);cursor:pointer;transition:background-color .15s}
.lang button[aria-pressed="true"]{background:var(--ink);color:#fff8e6}
.lang.big{margin-top:20px}
.lang.big button{min-height:50px;padding:0 22px;font-size:1.08rem}

/* ---------- viewport chrome ---------- */
.rig{position:absolute;bottom:26px;display:flex;gap:10px;z-index:5}
.rig.left{left:14px}.rig.right{right:14px}
.round{width:58px;height:58px;border-radius:50%;border:2px solid var(--ink);background:rgba(255,252,246,.94);color:var(--ink);display:grid;place-items:center;cursor:pointer;box-shadow:var(--sh1);touch-action:none;-webkit-tap-highlight-color:transparent;transition:transform .18s var(--spring),background-color .15s}
.round svg{width:28px;height:28px}
.round:hover{background:#fff;transform:translateY(-2px)}.round:active{transform:scale(.92)}
.round.sm{width:50px;height:50px}.round.sm svg{width:24px;height:24px}
.hint{position:absolute;left:50%;top:12px;translate:-50% 0;max-width:calc(100% - 28px);padding:10px 18px;border-radius:999px;background:var(--ink);color:#fff8e6;font:700 1.02rem/1.25 var(--body);text-align:center;opacity:0;pointer-events:none;transition:opacity .5s;z-index:4;box-shadow:var(--sh1)}
.hint.show{opacity:.95}
.fallback{position:absolute;inset:20px;display:grid;place-items:center;text-align:center;font-size:1.25rem;padding:20px;border:2px dashed var(--ink);border-radius:20px;background:rgba(255,250,240,.9)}
.nogl .rig,.nogl canvas,.nogl .guidecard{display:none}
.in-xr .tags,.in-xr .leaders,.in-xr .guidecard{display:none}

/* guide portrait */
.guidecard{position:absolute;left:14px;top:12px;z-index:5;display:flex;align-items:center;gap:10px;padding:6px 8px 6px 6px;border-radius:999px;background:rgba(255,252,246,.88);border:1.5px solid var(--line2);box-shadow:var(--sh1);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.portrait-wrap{position:relative;width:76px;height:76px;border-radius:50%;background:radial-gradient(circle at 50% 35%,#fff6dc,#f3dfa4 70%);border:2.5px solid var(--ink);overflow:hidden;flex:none}
.portrait-wrap::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:3px solid var(--yellowd);opacity:0;transition:opacity .3s}
.guidecard.talking .portrait-wrap{box-shadow:0 0 0 4px rgba(246,223,120,.9)}
#portrait{width:100%;height:100%;display:block}
.gc-meta{display:flex;flex-direction:column;line-height:1.1;padding-right:2px}
.gc-meta b{font:400 1.12rem/1.1 var(--display)}
.gc-state{display:flex;align-items:center;gap:6px;font:700 .82rem var(--body);color:var(--muted);opacity:0;transition:opacity .25s}
.guidecard.talking .gc-state{opacity:1}
.eq{display:inline-flex;gap:2px;align-items:flex-end;height:12px}
.eq i{width:3px;height:4px;background:var(--hot);border-radius:2px;animation:eq .7s ease-in-out infinite}
.eq i:nth-child(2){animation-delay:.15s}.eq i:nth-child(3){animation-delay:.3s}
@keyframes eq{0%,100%{height:3px}50%{height:12px}}
.gc-voice{width:44px;height:44px;border-radius:50%;border:2px solid var(--ink);background:var(--card);display:grid;place-items:center;cursor:pointer;transition:transform .18s var(--spring)}
.gc-voice svg{width:22px;height:22px}.gc-voice:hover{transform:scale(1.06)}
.gc-voice[aria-pressed="false"]{background:#e8e3d6;color:var(--muted)}

/* labels */
.tags{position:absolute;inset:0;pointer-events:none;z-index:3}
.tag{position:absolute;left:0;top:0;padding:7px 14px;border-radius:999px;background:var(--card);border:2px solid var(--ink);font:800 .98rem/1.15 var(--body);white-space:nowrap;box-shadow:var(--sh1);opacity:0;transition:opacity .3s;will-change:transform}
.leaders{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2}
.leaders line{stroke:var(--ink);stroke-width:2.2;stroke-linecap:round;stroke-dasharray:1 5;opacity:0}
.leaders circle{fill:var(--yellow);stroke:var(--ink);stroke-width:3;opacity:0}

/* ---------- panel content ---------- */
.rise{animation:rise .55s var(--ease) both}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1}}
.step-meta{display:flex;justify-content:space-between;align-items:center;gap:10px;font:800 .9rem var(--body);color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px}
.step-title{font:400 2rem/1.12 var(--display);margin:0 0 10px;letter-spacing:.002em;text-wrap:balance}
.step-text{margin:0 0 14px;font-size:1.26rem;line-height:1.58;text-wrap:pretty}
.step-actions{display:flex;flex-wrap:wrap;gap:10px 14px;align-items:center;margin-top:14px}
.src{display:inline-flex;align-items:center;font:700 .92rem var(--body);color:var(--ink2);background:rgba(246,223,120,.55);padding:5px 12px;border-radius:999px;border:1px solid rgba(233,201,74,.7)}
.sub{font:800 .92rem var(--body);text-transform:uppercase;letter-spacing:.09em;color:var(--muted);margin:24px 0 10px}
.stack{display:grid;gap:12px;margin-top:14px}
.fine{font-size:1rem;color:var(--ink2);line-height:1.5;margin:8px 0 0}
.caption{font-size:1.18rem;margin:16px 0 10px;min-height:3.2em}
.card{margin:20px 0 4px;padding:18px 18px 20px;border:1.5px solid var(--line2);border-radius:var(--r-lg);background:var(--card);box-shadow:var(--sh1)}
.card-title{display:flex;align-items:center;gap:10px;margin:0 0 4px;font:400 1.4rem/1.2 var(--display)}
.card-title svg{width:26px;height:26px;color:var(--sun);flex:none}
.bignums{display:grid;gap:10px;margin:6px 0 10px}
.bn{display:flex;align-items:baseline;gap:14px;padding:12px 16px;border:1.5px solid var(--line2);border-radius:var(--r-md);background:var(--card);box-shadow:var(--sh1)}
.bn b{font:400 2rem/1 var(--display);min-width:5.3ch}
.bn span{font-size:1.06rem;line-height:1.35}
.live{display:flex;justify-content:space-between;align-items:center;margin:8px 0;padding:12px 18px;border-radius:var(--r-md);background:var(--ink);color:#fff8e6;font-size:1.22rem;box-shadow:var(--sh1)}
.live b{font-family:var(--display);font-weight:400;font-size:1.32rem}
.tdot{display:inline-block;width:16px;height:16px;border-radius:50%;margin-right:8px;vertical-align:-2px;border:2px solid var(--ink)}
.live .tdot{border-color:#fff8e6}

.seg{display:grid;grid-template-columns:1fr 1fr;border:2px solid var(--ink);border-radius:var(--r-md);overflow:hidden;background:var(--card)}
.seg button{border:0;background:transparent;min-height:58px;font:800 1.12rem var(--body);cursor:pointer;transition:background-color .15s}
.seg button+button{border-left:2px solid var(--ink)}
.seg button[aria-pressed="true"]{background:var(--ink);color:#fff8e6}
.switches{display:grid;gap:10px}
@media (min-width:520px){.switches{grid-template-columns:1fr 1fr}}
.switch{display:flex;align-items:center;gap:12px;width:100%;min-height:58px;padding:0 14px;border:2px solid var(--ink);border-radius:var(--r-md);background:var(--card);cursor:pointer;text-align:left;font:800 1.08rem/1.2 var(--body);transition:background-color .15s,transform .18s var(--spring)}
.switch .knob{position:relative;flex:none;width:54px;height:32px;border-radius:99px;border:2px solid var(--ink);background:#dcd6c8;transition:background-color .2s}
.switch .knob::after{content:"";position:absolute;left:2px;top:2px;width:24px;height:24px;border-radius:50%;background:#fff;border:2px solid var(--ink);transition:transform .22s var(--spring)}
.switch[aria-pressed="true"] .knob{background:var(--water)}
.switch[aria-pressed="true"] .knob::after{transform:translateX(22px)}
.switch:hover{background:#fff}.switch:active{transform:scale(.98)}

/* design */
.design .fine{margin-top:2px}
.steppers{display:grid;gap:10px;margin:14px 0 6px}

.stepper{display:grid;grid-template-columns:1fr auto auto auto;align-items:center;gap:10px;padding:10px 12px;border:1.5px solid var(--line2);border-radius:var(--r-md);background:var(--paper-hi)}
.stepper .sl{font:800 1rem var(--body)}
.stepper b{font:400 1.7rem/1 var(--display);min-width:1.4ch;text-align:center}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.stat{padding:10px 12px;border-radius:var(--r-sm);background:var(--wash);border:1px solid rgba(44,184,234,.35)}
.stat b{display:block;font:400 1.45rem/1.1 var(--display)}
.stat span{font-size:.92rem;color:var(--ink2)}
.badge{display:inline-flex;margin-top:10px;padding:6px 12px;border-radius:999px;font:800 .9rem var(--body)}
.badge.drawn{background:rgba(42,157,111,.13);color:#1d6e4e;border:1px solid rgba(42,157,111,.4)}
.badge.changed{background:rgba(242,169,26,.16);color:#8a5a00;border:1px solid rgba(242,169,26,.5)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{border:1.5px solid var(--ink);background:var(--paper-hi);border-radius:999px;padding:9px 15px;min-height:44px;font:700 1rem var(--body);cursor:pointer;transition:background-color .15s,transform .18s var(--spring)}
.chip:hover{background:#fff;transform:translateY(-1px)}
.chip[aria-pressed="true"]{background:var(--ink);color:#fff8e6}
.reply{margin:12px 0 0;font:700 1.1rem/1.45 var(--body);color:var(--waterd);min-height:0}
.reply:empty{display:none}

/* year */
.sliderwrap{margin:16px 0 8px}
input[type=range]{width:100%;height:48px;margin:0;background:transparent;-webkit-appearance:none;appearance:none;cursor:pointer;touch-action:pan-y}
input[type=range]::-webkit-slider-runnable-track{height:18px;border-radius:99px;background:var(--grad);border:2px solid var(--ink)}
input[type=range]::-moz-range-track{height:14px;border-radius:99px;background:var(--grad);border:2px solid var(--ink)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:46px;height:46px;margin-top:-16px;border-radius:50%;background:#fff;border:5px solid var(--ink);box-shadow:var(--sh1)}
input[type=range]::-moz-range-thumb{width:34px;height:34px;border-radius:50%;background:#fff;border:5px solid var(--ink)}
.mlabels{display:grid;grid-template-columns:repeat(12,1fr);font:700 .84rem var(--body);color:var(--ink2);text-align:center;margin-top:2px}
.tiles{display:grid;gap:8px;margin-top:6px}
.tile{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;border:1.5px solid var(--line);border-radius:var(--r-md);background:var(--card)}
.tile .tl{font-size:1.02rem;line-height:1.3}
.tile b{font:400 1.65rem/1 var(--display);white-space:nowrap}
.chart{width:100%;height:auto;display:block;background:var(--card);border:1.5px solid var(--line);border-radius:var(--r-md)}
.sunchart{margin-top:12px;font-family:var(--body)}
.legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:8px;font:700 .95rem var(--body);color:var(--ink2)}
.legend i{display:inline-block;width:14px;height:14px;border-radius:4px;margin-right:6px;vertical-align:-2px;border:1px solid rgba(28,36,51,.3)}
.legend .unit{color:var(--muted);font-weight:400}
.callout{margin:12px 0 0;padding:12px 14px;border-left:5px solid var(--water);background:var(--wash);border-radius:0 12px 12px 0;font-size:1.08rem;line-height:1.45}
.tankcol{display:grid;gap:3px;margin:12px 0 4px;padding:6px;border:2px solid var(--ink);border-radius:22px 22px 18px 18px;background:#fff}
.layer{display:flex;justify-content:space-between;align-items:center;padding:6px 14px;border-radius:8px;font:800 1rem var(--body);color:#10202c}
.layer span{font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.82rem;opacity:.8}

/* learn */
.ncards{display:grid;gap:10px}
.ncard{padding:14px 16px;border:1.5px solid var(--line2);border-radius:var(--r-md);background:var(--card);box-shadow:var(--sh1)}
.cbig{font:400 2.1rem/1.05 var(--display)}
.clab{font-size:1.05rem;line-height:1.4;margin:4px 0 8px}
.ncard .src{margin-top:8px}
.gradbar{height:16px;border-radius:99px;border:2px solid var(--ink)}
.stack2{display:flex;height:34px;border:2px solid var(--ink);border-radius:12px;overflow:hidden;font:800 1rem var(--body)}
.stack2 div{display:grid;place-items:center}.s1{background:var(--water)}.s2{background:var(--hot);color:#fff}
.barrow{margin:8px 0}.bl{display:flex;justify-content:space-between;font-size:1.04rem;margin-bottom:4px}
.bt{height:18px;border-radius:99px;background:rgba(28,36,51,.09);overflow:hidden}
.bf{height:100%;border-radius:99px;background:var(--water)}.bf.good{background:var(--good)}.bf.warm{background:var(--hot)}
.lesson{margin:22px 0 0;padding:18px 18px 20px;border:1.5px solid var(--line2);border-radius:var(--r-lg);background:var(--card);box-shadow:var(--sh1)}
.lkick{font:800 .85rem var(--body);text-transform:uppercase;letter-spacing:.1em;color:var(--waterd)}
.ltitle{font:400 1.55rem/1.2 var(--display);margin:4px 0 12px}
.lesson-art{width:100%;height:auto;display:block;margin:4px 0 12px;border-radius:var(--r-md);background:var(--paper-hi);border:1.5px solid var(--line)}
.lesson p{margin:0 0 10px;font-size:1.14rem;line-height:1.55}
.quiz{margin-top:14px;padding-top:14px;border-top:1.5px dashed var(--line2)}
.qq{font:800 1.08rem/1.4 var(--body);margin-bottom:10px}
.opts{display:grid;gap:8px}
.opt{display:flex;align-items:center;gap:10px;min-height:54px;padding:8px 16px;border:2px solid var(--ink);border-radius:var(--r-md);background:var(--paper-hi);font:700 1.06rem var(--body);text-align:left;cursor:pointer;transition:background-color .15s,transform .18s var(--spring)}
.opt:hover:not([disabled]){background:#fff;transform:translateY(-1px)}
.opt svg{width:22px;height:22px}
.opt[disabled]{cursor:default}
.opt.right{background:rgba(42,157,111,.16);border-color:var(--good);color:#155c40}
.opt.wrongpick{background:rgba(232,85,43,.12);border-color:var(--hot);text-decoration:line-through}
.qfb{margin:10px 0 0;font:800 1.06rem var(--body)}.qfb.ok{color:var(--good)}.qfb.no{color:#b2421f}

/* ask */
.aicard{margin:4px 0 16px;padding:16px 18px;border-radius:var(--r-lg);background:linear-gradient(135deg,#fffaf0 0%,#fff3d1 100%);border:1.5px solid rgba(233,201,74,.8);box-shadow:var(--sh1)}
.aicard.ready{background:linear-gradient(135deg,#f3fbf7,#e1f4ea);border-color:rgba(42,157,111,.5)}
.aicard.muted{background:var(--paper-hi);border-color:var(--line2)}
.aihead{display:flex;align-items:center;gap:10px;font-size:1.12rem}
.aihead svg{width:24px;height:24px;color:var(--sun);flex:none}
.aicard.ready .aihead svg{color:var(--good)}
.aihead .pct{margin-left:auto;font:400 1.3rem var(--display)}
.pbar{height:12px;border-radius:99px;background:rgba(28,36,51,.1);overflow:hidden;margin:10px 0 2px}
.pbar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--water),var(--good));transition:width .3s}
.thread{display:grid;gap:12px;margin:6px 0 4px}
.thread:empty{display:none}
.msg{max-width:92%;padding:12px 16px;border-radius:20px;font-size:1.14rem;line-height:1.5;animation:rise .35s var(--ease) both}
.msg p{margin:0}
.msg.user{justify-self:end;background:var(--ink);color:#fff8e6;border-bottom-right-radius:6px}
.msg.guide{justify-self:start;background:#fff;border:1.5px solid var(--line2);border-bottom-left-radius:6px;box-shadow:var(--sh1)}
.who{display:flex;align-items:center;gap:8px;font:800 .82rem var(--body);text-transform:uppercase;letter-spacing:.08em;color:var(--waterd);margin-bottom:4px}
.mini{width:14px;height:14px;border-radius:50%;background:var(--yellow);border:2px solid var(--ink)}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px}
.note{font:700 .9rem var(--body);color:var(--muted)}
.bytes{display:flex;align-items:center;gap:6px;margin-top:8px;font:800 .86rem var(--body);color:var(--good)}
.bytes svg{width:16px;height:16px}
.typing{display:inline-flex;align-items:center;gap:4px;color:var(--muted);font-weight:700}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.2}40%{opacity:1}}
.qform{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;margin-top:14px}
.qform input{min-height:60px;padding:0 16px;border:2px solid var(--ink);border-radius:var(--r-md);background:#fff;font:400 1.12rem var(--body);min-width:0;box-shadow:inset 0 2px 4px rgba(28,36,51,.06)}
.qform input:focus{outline:4px solid var(--water);outline-offset:2px}
.qlist{display:grid;gap:8px;margin-top:6px}
.q{width:100%;min-height:58px;padding:11px 16px;border:2px solid var(--ink);border-radius:var(--r-md);background:var(--card);text-align:left;font:700 1.08rem/1.3 var(--body);cursor:pointer;transition:background-color .15s,transform .18s var(--spring)}
.q:hover{background:#fff;transform:translateY(-1px)}

/* more */
.behind,.limits{margin:10px 0 0;padding-left:1.3em;font-size:1.08rem;line-height:1.55}
.behind li,.limits li{margin-bottom:8px}
.comps{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:8px}
.comps li{display:flex;flex-direction:column;padding:10px 14px;border:1.5px solid var(--line);border-radius:var(--r-sm);background:var(--paper-hi);font-size:1rem}
.comps a{font-size:1.08rem}

/* ---------- dock ---------- */
.dock{position:relative;z-index:6;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:var(--card);border-top:1.5px solid var(--line2)}
.dock:empty{display:none}
.tabdock{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.tab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:66px;border:2px solid transparent;border-radius:var(--r-md);background:transparent;font:800 .95rem/1.1 var(--body);cursor:pointer;color:var(--ink2);transition:background-color .15s,transform .18s var(--spring),color .15s}
.tab svg{width:27px;height:27px}
.tab:hover{background:rgba(28,36,51,.05);color:var(--ink)}.tab:active{transform:scale(.96)}
.tab[aria-pressed="true"]{background:var(--ink);color:#fff8e6;box-shadow:var(--sh1)}
.tourdock{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center}
.tourdock .nav{min-width:132px}
.dots{display:flex;justify-content:center;gap:7px}
.dots i{width:11px;height:11px;border-radius:50%;border:2px solid var(--ink);background:transparent;transition:background-color .2s,transform .2s}
.dots i.done{background:rgba(28,36,51,.35)}.dots i.on{background:var(--ink);transform:scale(1.25)}
@media (min-width:940px){.dock{background:transparent;border-top:0;padding:0 14px calc(14px + env(safe-area-inset-bottom))}.tabdock,.tourdock{max-width:760px;margin:0 auto;padding:8px;border-radius:24px;background:rgba(255,252,246,.94);border:1.5px solid var(--line2);box-shadow:var(--sh2)}}

/* ---------- intro ---------- */
.intro{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;align-items:center;padding:16px;overflow:auto;
  background:linear-gradient(180deg,rgba(244,238,223,.15) 0%,rgba(244,238,223,.55) 40%,rgba(244,238,223,.92) 75%);transition:opacity .6s,visibility 0s}
.intro.gone{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .6s,visibility 0s .6s}
.intro-card{margin-top:auto;width:min(560px,100%);padding:26px 22px 22px;border:1.5px solid var(--line2);border-radius:30px;background:rgba(255,252,246,.94);box-shadow:var(--sh2);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:rise .9s var(--ease) both}
.intro-kicker{display:flex;align-items:center;gap:10px;font:700 .98rem/1.3 var(--body);color:var(--ink2)}
.intro-kicker svg{width:30px;height:30px;flex:none}
.intro-title{font:400 clamp(3.2rem,14vw,6.2rem)/.95 var(--display);margin:14px 0 8px;letter-spacing:-.01em}
.intro-tag{font-size:1.36rem;line-height:1.35;margin:0 0 16px;max-width:24ch;text-wrap:balance}
.intro-chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 20px}
.intro-chips span{padding:7px 13px;border-radius:999px;font:700 .95rem var(--body);background:var(--wash);border:1px solid rgba(44,184,234,.4)}
.intro-chips span:nth-child(2){background:rgba(246,223,120,.45);border-color:rgba(233,201,74,.7)}
.intro-chips span:nth-child(3){background:rgba(42,157,111,.12);border-color:rgba(42,157,111,.35)}
.intro-btns{display:grid;gap:12px}
.intro-small{margin:16px 0 0;font-size:1.02rem;color:var(--ink2)}
@media (min-width:940px){
  .intro{align-items:flex-start;justify-content:center;padding:40px 6vw;background:linear-gradient(90deg,rgba(244,238,223,.96) 0%,rgba(244,238,223,.86) 34%,rgba(244,238,223,0) 64%)}
  .intro-card{margin:auto 0;background:transparent;border:0;box-shadow:none;padding:0;-webkit-backdrop-filter:none;backdrop-filter:none;width:min(560px,44vw)}
}
.modal{position:fixed;inset:0;z-index:60;display:grid;grid-template-columns:minmax(0,1fr);place-items:center;padding:16px;background:rgba(28,36,51,.55)}
.modal-card{width:min(640px,100%);justify-self:center;max-height:90vh;max-height:90dvh;overflow:auto;padding:24px 22px;border:1.5px solid var(--line2);border-radius:var(--r-lg);background:var(--card);box-shadow:var(--sh2)}
.modal-card h2{font:400 1.8rem/1.15 var(--display);margin:0 0 12px}
.modal-card p{margin:0 0 12px;font-size:1.15rem}
.modal-card.ar{text-align:center}
#armv model-viewer{width:100%;height:46vh;background:transparent;--poster-color:transparent}
.arbtn{position:absolute;left:50%;bottom:14px;translate:-50% 0;white-space:nowrap;width:max-content;max-width:92%;font-size:1.02rem;padding:0 18px}

/* ---------- phones ---------- */
@media (max-width:560px){
  #tourBtn{display:none}
  .wordmark{font-size:1.55rem}.logo{width:34px;height:34px}
  .top{padding-left:12px;padding-right:12px}
  .btn.small{padding:0 12px;font-size:.98rem}
  .lang button{padding:0 11px}
  .btn.huge{font-size:1.28rem;padding:0 18px;min-height:70px}
  .top-actions{gap:6px}
  .step-title{font-size:1.72rem}.step-text{font-size:1.18rem}
  .rig{bottom:24px}.rig.left{left:10px}.rig.right{right:10px}
  .round{width:52px;height:52px}.rig{gap:7px}
  .portrait-wrap{width:58px;height:58px}
  .gc-meta{display:none}.guidecard{gap:6px;padding:5px;left:10px;top:8px}
  .tags{z-index:6}
  .gc-voice{width:40px;height:40px}
  .tourdock .nav{min-width:0;padding:0 16px}.tourdock{gap:6px}.dots{gap:3px}.dots i{width:7px;height:7px;border-width:1.5px}
  .tab{font-size:.8rem;min-height:62px}.tab svg{width:25px;height:25px}
  .intro{padding:12px}
  .intro-card{padding:18px 18px 16px;border-radius:26px}
  .intro-kicker{font-size:.9rem;gap:8px}.intro-kicker svg{width:24px;height:24px}
  .intro-title{font-size:clamp(2.6rem,13vw,3.3rem);margin:8px 0 4px}
  .intro-tag{font-size:1.12rem;margin:0 0 12px}
  .intro-chips{gap:6px;margin:0 0 14px}.intro-chips span{padding:5px 10px;font-size:.82rem}
  .intro .btn.huge{min-height:56px;font-size:1.12rem}
  .intro-btns{gap:10px}
  .intro-small{margin:10px 0 0;font-size:.92rem}
  .intro .lang.big{display:none}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}}

/* welcome screen: full-bleed 3D behind the hero, no panel or dock yet */
.app[data-mode="intro"] .panel,.app[data-mode="intro"] .rig,.app[data-mode="intro"] .guidecard{visibility:hidden}
.app[data-mode="intro"] .stage{grid-template-columns:minmax(0,1fr)}
.app[data-mode="intro"] .panel{position:absolute;pointer-events:none}