:root{
    --purple:#6D40C4; --purple-dk:#57339D; --purple-tint:#F2EBFF; --gold:#FEBF2B; --pink:#FC6FE2; --teal:#2BB5C0;
    --bg:#F5F3FA; --dot:rgba(87,51,157,.16); --ink:#17132B; --muted:#5E5873; --faint:#9A94AD;
    --card:#FFFFFF; --card-2:#FBFAFE; --border:#E6E1F2; --border-hi:#D2BAFF;
    --lc:#B9A6E3; --yes:#6D40C4; --no:#F77049; --no-tint:#FFF3EE;
    --shadow-sm:0 1px 2px rgba(40,20,90,.05),0 2px 8px rgba(40,20,90,.05);
    --shadow-lg:0 24px 60px -18px rgba(40,20,90,.28),0 4px 14px rgba(40,20,90,.06);
    --glow-op:.55;
  }
  :root[data-theme="dark"]{
    --bg:#0F0C1A; --dot:rgba(210,186,255,.10); --ink:#F3F0FB; --muted:#B3ACC8; --faint:#7C7592;
    --card:#1A1629; --card-2:#201B33; --border:#2E2746; --border-hi:#5B44A0; --purple-tint:#2A2148;
    --lc:#6A55A8; --yes:#B79CFF; --no:#FF9670; --no-tint:#3A2420;
    --shadow-sm:0 1px 2px rgba(0,0,0,.3); --shadow-lg:0 24px 60px -18px rgba(0,0,0,.7);
    --glow-op:.35;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{background:var(--bg);color:var(--ink);font-family:Poppins,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.45;overflow-x:hidden;min-height:100vh}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0}
  img{display:block}

  /* the evyAI mascot cursor: points with its glove, waves over anything clickable */
  html,body{cursor:url("cursor/evy.png") 4 3,auto;cursor:image-set(url("cursor/evy.png") 1x,url("cursor/evy@2x.png") 2x) 4 3,auto}
  a,button,label,[role="button"],summary{cursor:url("cursor/evy-hover.png") 4 3,pointer;cursor:image-set(url("cursor/evy-hover.png") 1x,url("cursor/evy-hover@2x.png") 2x) 4 3,pointer}
  @media (pointer:coarse){html,body,a,button{cursor:auto}}

  /* background: dot grid + two soft brand glows */
  .bgfx{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden;background:var(--bg)}
  .bgfx::before{content:"";position:absolute;inset:0;background-image:radial-gradient(var(--dot) 1px,transparent 1.4px);background-size:18px 18px}
  .bgfx i{position:absolute;bottom:-30vh;width:70vw;height:60vh;border-radius:50%;filter:blur(70px);opacity:var(--glow-op);animation:drift 18s ease-in-out infinite alternate}
  .bgfx i.a{left:-20vw;background:radial-gradient(closest-side,#B892FF,transparent)}
  .bgfx i.b{right:-20vw;background:radial-gradient(closest-side,#FFB3EE,transparent);animation-delay:-9s}
  @keyframes drift{to{transform:translate(4vw,-6vh) scale(1.08)}}

  .bar{position:sticky;top:0;z-index:20;backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);background:color-mix(in srgb,var(--bg) 72%,transparent)}
  .bar-in{max-width:1320px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;letter-spacing:-.01em}
  .brand img{height:32px;width:auto}
  .brand .lw{display:none}
  [data-theme="dark"] .brand .lp{display:none} [data-theme="dark"] .brand .lw{display:block}
  .brand span{color:var(--muted);font-weight:500;padding-left:10px;border-left:1px solid var(--border)}
  .bar-r{display:flex;align-items:center;gap:10px}
  .oh{display:inline-flex;align-items:center;gap:9px;height:38px;padding:0 14px 0 6px;border-radius:999px;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-sm);font-size:13px;font-weight:600;white-space:nowrap;transition:transform .25s,border-color .25s}
  .oh:hover{transform:translateY(-1px);border-color:var(--border-hi)}
  .oh-tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:999px;background:var(--purple);color:#fff;font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}
  .oh.live .oh-tag{background:#E83232}
  .oh-tag i{width:6px;height:6px;border-radius:50%;background:#fff;animation:pulse 1.4s ease-in-out infinite}
  @keyframes pulse{50%{opacity:.25;transform:scale(.7)}}
  .oh-t em{font-style:normal;color:var(--muted);font-weight:500}
  .tbtn{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-sm);color:var(--muted);transition:transform .35s cubic-bezier(.2,.8,.2,1),color .2s}
  .tbtn:hover{color:var(--purple);transform:rotate(-20deg)}
  .tbtn svg{width:18px;height:18px}
  .tbtn .moon{display:none} [data-theme="dark"] .tbtn .moon{display:block} [data-theme="dark"] .tbtn .sun{display:none}

  .wrap{max-width:1320px;margin:0 auto;padding:0 24px 80px}
  .hero{text-align:center;padding:46px 0 34px}
  .hero h1{font-size:clamp(34px,6vw,72px);font-weight:800;letter-spacing:-.045em;line-height:1.02}
  .hero h1 em{font-style:italic;font-weight:700;background:linear-gradient(100deg,var(--purple) 10%,#B05CE6 55%,var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent;padding-right:.08em}
  .hero p{margin-top:14px;color:var(--muted);font-size:clamp(14px,1.6vw,17px)}
  .hero h1 > *, .hero p{animation:rise .7s cubic-bezier(.2,.8,.2,1) both}
  .hero p{animation-delay:.12s}

  /* problem cards */
  .grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;position:relative}
  .pcard{display:flex;flex-direction:column;padding:7px;border-radius:22px;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-sm);text-align:left;transition:transform .45s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .25s,opacity .3s;animation:rise .6s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(.15s + var(--i) * 70ms);transform-style:preserve-3d;will-change:transform}
  .pcard:hover{box-shadow:var(--shadow-lg);border-color:var(--border-hi)}
  .pcard[aria-expanded="true"]{border-color:var(--purple);box-shadow:0 0 0 3px color-mix(in srgb,var(--purple) 22%,transparent),var(--shadow-lg)}
  .grid.has-open .pcard[aria-expanded="false"]{opacity:.62}
  .grid.has-open .pcard[aria-expanded="false"]:hover{opacity:1}
  .pc-head{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;padding:8px 8px 10px;min-height:58px}
  .pc-title{font-size:15px;font-weight:700;letter-spacing:-.02em;line-height:1.25}
  .pc-go{flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--bg);color:var(--muted);transition:transform .4s cubic-bezier(.2,.8,.2,1),background .25s,color .25s}
  .pc-go svg{width:13px;height:13px}
  .pcard:hover .pc-go{background:var(--purple-tint);color:var(--purple);transform:translateY(2px)}
  .pcard[aria-expanded="true"] .pc-go{background:var(--purple);color:#fff;transform:rotate(180deg)}
  .pc-img{position:relative;display:block;aspect-ratio:1;border-radius:16px;overflow:hidden;background:var(--purple-tint)}
  .pc-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s cubic-bezier(.2,.8,.2,1),filter .4s}
  .pcard:hover .pc-img img{transform:scale(1.09) translate(var(--px,0),var(--py,0))}
  .pc-img::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.38) 48%,transparent 62%);transform:translateX(-120%);pointer-events:none}
  .pcard:hover .pc-img::after{transform:translateX(120%);transition:transform 1s ease}
  .spark{position:absolute;width:8px;height:8px;pointer-events:none;opacity:0}
  .spark::before,.spark::after{content:"";position:absolute;inset:3px 0;background:#fff;border-radius:2px;box-shadow:0 0 8px #fff}
  .spark::after{inset:0 3px}
  .pcard:hover .spark{animation:twinkle 1.6s ease-in-out infinite;animation-delay:var(--d)}
  @keyframes twinkle{0%,100%{opacity:0;transform:scale(.3) rotate(0)}50%{opacity:1;transform:scale(1) rotate(45deg)}}
  @keyframes rise{from{opacity:0;transform:translateY(16px)}}

  /* detail panel: grid-rows 0fr -> 1fr expand, caret follows the open card */
  .detail{display:grid;grid-template-rows:0fr;transition:grid-template-rows .55s cubic-bezier(.2,.8,.2,1);scroll-margin-top:72px}
  .detail.open{grid-template-rows:1fr}
  .dclip{overflow:hidden;min-height:0;padding:0 2px}
  .dpanel{position:relative;margin:22px 0 6px;padding:28px 28px 30px;border-radius:26px;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-lg)}
  .detail .dclip{padding-top:12px;margin-top:-12px}
  .dpanel::before{content:"";position:absolute;top:-10px;left:calc(var(--cx,50%) - 10px);width:20px;height:20px;background:var(--card);border-left:1px solid var(--border);border-top:1px solid var(--border);transform:rotate(45deg);border-radius:4px 0 0 0;transition:left .45s cubic-bezier(.2,.8,.2,1)}
  .dhead{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:16px}
  .dhead h2{font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.045em;line-height:1.05}
  .xbtn{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--bg);color:var(--muted);flex:none;transition:background .2s,color .2s,transform .3s}
  .xbtn:hover{background:var(--ink);color:var(--bg);transform:rotate(90deg)}
  .xbtn svg{width:14px;height:14px}
  .startbar{display:inline-flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;padding:12px 16px;border-radius:14px;background:var(--purple-tint);color:var(--muted);font-size:14px;margin-bottom:22px;max-width:100%}
  .startbar b{color:var(--purple);font-weight:700} [data-theme="dark"] .startbar b{color:#CDB8FF}
  .startbar .lbl{margin:0}

  /* the flow track */
  .trackw{position:relative}
  .track.drag{cursor:grabbing;user-select:none}
  .more{position:absolute;right:-8px;top:calc(6px + var(--ay,58px) - 20px);z-index:3;display:none;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:999px;background:var(--purple);color:#fff;font-size:12.5px;font-weight:700;box-shadow:0 10px 24px -8px rgba(87,51,157,.7);animation:nudge 1.6s ease-in-out infinite}
  .trackw.over .more{display:inline-flex}
  .trackw.end .more{display:none}
  @keyframes nudge{50%{transform:translateX(4px)}}
  .track{overflow-x:auto;margin:0 -28px;padding:6px 28px 14px;scrollbar-width:thin;scrollbar-color:var(--border) transparent;mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 24px),transparent)}
  .track-in{display:flex;align-items:flex-start;width:max-content;--ay:58px}
  .col{width:196px;flex:none;display:flex;flex-direction:column}
  .track-in.fit{width:100%}
  .track-in.fit .col{flex:1 1 0;width:auto;min-width:196px}
  .track-in.fit .tile{aspect-ratio:16/8}
  .col.wide{width:262px} .col.wideish{width:228px} .col.slim{width:172px}
  .node{display:block;border-radius:18px;background:var(--card-2);border:1px solid var(--border);padding:12px;width:100%;text-align:left;transition:transform .3s cubic-bezier(.2,.8,.2,1),border-color .25s,box-shadow .3s}
  a.node:hover,a.branch:hover{transform:translateY(-3px);border-color:var(--border-hi);box-shadow:var(--shadow-lg)}
  .node.card{padding:7px}
  .node .tx{padding:10px 8px 6px}
  .lbl{display:block;font-size:10.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--faint);margin-bottom:5px}
  .node h3{font-size:15px;font-weight:700;letter-spacing:-.02em;line-height:1.3}
  .node p{font-size:13px;color:var(--muted);margin-top:4px;line-height:1.45}
  .go{display:inline-block;margin-top:9px;font-size:13px;font-weight:700;color:var(--purple)}
  [data-theme="dark"] .go{color:#C2A8FF}
  .go::after{content:" \2197";display:inline-block;transition:transform .25s}
  a:hover .go::after,.go:hover::after{transform:translate(2px,-2px)}

  /* icon tiles stand in for photos on step cards */
  .tile{position:relative;aspect-ratio:16/10;border-radius:13px;overflow:hidden;display:grid;place-items:center;background:linear-gradient(135deg,hsl(var(--h) 85% 72%),hsl(calc(var(--h) + 40) 80% 58%))}
  .tile::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1.5px);background-size:12px 12px;opacity:.6}
  .tile svg{position:relative;width:46px;height:46px;color:#fff;filter:drop-shadow(0 6px 10px rgba(30,10,80,.25));transition:transform .5s cubic-bezier(.2,.8,.2,1)}
  a.node:hover .tile svg{transform:scale(1.14) rotate(-6deg)}
  .tile .badge{position:absolute;left:8px;bottom:8px;display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 9px;border-radius:999px;background:rgba(255,255,255,.95);color:#2A2148;font-size:11px;font-weight:700}
  .tile .badge.hot{background:#E83232;color:#fff}

  .arr{position:relative;width:58px;flex:none;height:calc(var(--ay) * 2);--lc2:var(--lc)}
  .arr .ln{position:absolute;left:6px;right:10px;top:50%;height:2px;margin-top:-1px;border-radius:2px;background:repeating-linear-gradient(90deg,var(--lc2) 0 7px,transparent 7px 12px);background-size:24px 2px;transform-origin:0 50%;animation:flow 1s linear infinite}
  .arr .ln::after{content:"";position:absolute;right:-7px;top:-4px;border:5px solid transparent;border-left:7px solid var(--lc2)}
  .arr.yes{--lc2:var(--yes)} .arr.no{--lc2:var(--no)}
  @keyframes flow{to{background-position:24px 0}}
  .arr .chip{position:absolute;left:50%;bottom:calc(50% + 9px);transform:translateX(-50%);display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:11px;font-weight:700;white-space:nowrap;background:var(--card);border:1px solid var(--border);color:var(--muted)}
  .arr.yes .chip{background:var(--purple-tint);color:var(--yes);border-color:transparent}
  .arr.no .chip{background:var(--no);color:#fff;border-color:transparent}

  .node.q{border:1.5px solid var(--purple);background:var(--card);min-height:calc(var(--ay) * 2);display:flex;flex-direction:column;justify-content:center}
  .qrow{display:flex;gap:10px;align-items:flex-start}
  .qrow b{font-size:14.5px;font-weight:700;letter-spacing:-.015em;line-height:1.3}
  .d{flex:none;width:24px;height:24px;display:grid;place-items:center;margin-top:1px}
  .d span{width:18px;height:18px;transform:rotate(45deg);border:1.5px solid var(--purple);border-radius:4px;display:grid;place-items:center;background:var(--purple-tint)}
  .d span::after{content:"?";transform:rotate(-45deg);font-size:11px;font-weight:800;color:var(--purple)}
  .drop{position:relative;height:56px;margin-left:22px}
  .drop::before{content:"";position:absolute;left:0;top:2px;bottom:9px;width:2px;border-radius:2px;background:repeating-linear-gradient(180deg,var(--no) 0 6px,transparent 6px 10px);background-size:2px 20px;transform-origin:50% 0;animation:flowY 1s linear infinite}
  .drop::after{content:"";position:absolute;left:-4px;bottom:2px;border:5px solid transparent;border-top:7px solid var(--no)}
  .drop.yes::before{background-image:repeating-linear-gradient(180deg,var(--yes) 0 6px,transparent 6px 10px)} .drop.yes::after{border-top-color:var(--yes)}
  @keyframes flowY{to{background-position:0 20px}}
  .pill{position:absolute;left:-14px;top:9px;z-index:1;display:inline-flex;align-items:center;gap:5px;height:25px;padding:0 10px;border-radius:999px;font-size:11px;font-weight:700;white-space:nowrap;background:var(--no);color:#fff}
  .pill.yes{background:var(--purple-tint);color:var(--yes)}
  .pill svg{width:10px;height:10px}
  .branch{display:block;border-radius:16px;border:1.5px dashed var(--border-hi);padding:12px 13px;font-size:13px;color:var(--muted);line-height:1.5;background:var(--card)}
  .branch b{color:var(--ink);font-weight:700}
  .branch .go{display:block;width:max-content}
  .branch .again{display:block;margin-top:6px;font-size:12px;color:var(--faint)}
  a.branch{transition:border-color .2s,transform .3s cubic-bezier(.2,.8,.2,1),box-shadow .3s}

  .exit{min-height:calc(var(--ay) * 2);display:flex;flex-direction:column;justify-content:center;gap:3px;border-radius:18px;padding:14px 16px;background:linear-gradient(135deg,#2A2148,#57339D);color:#fff;text-align:left;width:100%;transition:transform .3s cubic-bezier(.2,.8,.2,1),box-shadow .3s;box-shadow:0 10px 24px -10px rgba(87,51,157,.6)}
  .exit:hover{transform:translateY(-3px) scale(1.02)}
  .exit small{font-size:12px;opacity:.75}
  .exit b{font-size:15.5px;font-weight:700;letter-spacing:-.015em}

  /* lists inside nodes */
  .ps{list-style:none;margin-top:10px;display:grid;gap:7px}
  .ps li a{display:grid;grid-template-columns:30px 1fr;gap:9px;align-items:start;padding:9px 10px;border-radius:12px;background:var(--card);border:1px solid var(--border);transition:border-color .2s,transform .25s}
  .ps li a:hover{border-color:var(--border-hi);transform:translateX(3px)}
  .ps .pn{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-weight:800;font-size:14px;color:#fff;background:linear-gradient(135deg,var(--purple),#B05CE6)}
  .ps .pn svg{width:17px;height:17px}
  .ps b{display:block;font-size:13.5px;letter-spacing:-.01em}
  .ps em{display:block;font-style:normal;font-size:12px;color:var(--muted);line-height:1.4}
  .ps .ask{display:inline-block;margin-top:3px;font-size:11.5px;font-weight:700;color:var(--purple)}
  [data-theme="dark"] .ps .ask{color:#C2A8FF}
  .duo-i{display:grid;grid-template-columns:22px 1fr auto;gap:8px;align-items:center;padding:8px 9px;margin-top:7px;border-radius:11px;background:var(--card);border:1px solid var(--border);transition:border-color .2s,transform .25s}
  .duo-i:hover{border-color:var(--border-hi);transform:translateX(3px)}
  .duo-n{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;color:#fff;background:var(--purple)}
  .duo-i b{display:block;font-size:13px} .duo-i em{display:block;font-style:normal;font-size:11.5px;color:var(--muted)}
  .duo-go{color:var(--faint);font-weight:700}
  .eg{display:grid;gap:4px;margin:9px 0 8px}
  .eg span{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
  .eg i{display:block;height:6px;border-radius:3px;width:calc(var(--w) * .9px);min-width:3px;background:var(--border-hi)}
  .eg .bad{color:#E83232;font-weight:700} .eg .bad i{background:#E83232}
  .detail.open .eg i{animation:growX .8s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(.8s + var(--k,0) * 70ms)}

  /* footer blocks inside a panel */
  .map{margin-top:26px;padding-top:22px;border-top:1px dashed var(--border)}
  .map-h{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin-bottom:14px}
  .map-h b{font-size:17px;letter-spacing:-.02em} .map-h span{font-size:13px;color:var(--muted)}
  .map-g{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
  .map-i{display:grid;grid-template-columns:44px 1fr;gap:11px;align-items:center;padding:9px;border-radius:14px;background:var(--card-2);border:1px solid var(--border);transition:transform .25s,border-color .2s,box-shadow .25s}
  .map-i:hover{transform:translateY(-2px);border-color:var(--border-hi);box-shadow:var(--shadow-sm)}
  .map-i .ic{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,hsl(var(--h) 80% 68%),hsl(calc(var(--h) + 40) 75% 55%))}
  .map-i .ic svg{width:22px;height:22px}
  .map-i b{display:block;font-size:13.5px;letter-spacing:-.01em} .map-i em{display:block;font-style:normal;font-size:12px;color:var(--muted);line-height:1.35}
  .foot{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
  .loopchip{display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border-radius:999px;border:1.5px dashed var(--border-hi);font-size:13px;font-weight:600;color:var(--muted);transition:border-color .2s,color .2s}
  a.loopchip:hover{border-color:var(--purple);color:var(--purple)}

  /* staggered entrance */
  .detail.open .track-in > *{animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(.15s + var(--k,0) * 70ms)}
  .detail.open .arr .ln{animation:growX .45s cubic-bezier(.2,.8,.2,1) calc(.2s + var(--k,0) * 70ms) both,flow 1s linear infinite}
  .detail.open .drop::before{animation:growY .4s cubic-bezier(.2,.8,.2,1) calc(.45s + var(--k,0) * 70ms) both,flowY 1s linear infinite}
  .detail.open .drop + *{animation:fadeUp .45s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(.55s + var(--k,0) * 70ms)}
  .detail.open .map-i,.detail.open .startbar,.detail.open .foot > *{animation:fadeUp .45s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(.5s + var(--k,0) * 45ms)}
  .detail.open .startbar{animation-delay:.08s}
  @keyframes fadeUp{from{opacity:0;transform:translateY(12px)}}
  @keyframes growX{from{transform:scaleX(0)}}
  @keyframes growY{from{transform:scaleY(0)}}

  .still{margin:44px auto 0;max-width:760px;text-align:center;color:var(--muted);font-size:14px}
  .still b{color:var(--ink)}
  .still a{color:var(--purple);font-weight:600;border-bottom:1px solid currentColor}
  [data-theme="dark"] .still a{color:#C2A8FF}

  @media (max-width:1100px){ .grid{grid-template-columns:repeat(3,1fr)} .map-g{grid-template-columns:repeat(2,1fr)} }
  @media (max-width:700px){
    .bar-in,.wrap{padding-left:16px;padding-right:16px}
    .brand span,.oh-t em{display:none}
    .oh-t{display:none} .oh{padding:0 5px}
    .grid{grid-template-columns:1fr;gap:10px}
    .pcard{flex-direction:row;align-items:center;gap:4px;border-radius:18px}
    .pc-img{order:-1;width:76px;flex:none;border-radius:13px}
    .pc-head{flex:1;align-items:center;min-height:0;padding:6px 8px 6px 10px}
    .pc-title{font-size:15px}
    .pcard[aria-expanded="true"] .pc-go{transform:rotate(180deg)}
    .dpanel{padding:20px 16px 22px;border-radius:22px}
    .track{margin:0 -16px;padding:6px 16px 14px}
    .map-g{grid-template-columns:1fr}
    .hero{padding:30px 0 24px}
  }
  @media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto} *,*::before,*::after{animation:none !important;transition:none !important} }

  /* ---------- bonus menu ($100M books) ---------- */
  .bonus{position:relative}
  .bonus-btn{display:inline-flex;align-items:center;gap:9px;height:38px;padding:0 13px 0 6px;border-radius:999px;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-sm);font-size:13px;font-weight:700;white-space:nowrap;transition:border-color .25s,transform .25s}
  .bonus-btn:hover{border-color:var(--border-hi);transform:translateY(-1px)}
  .bonus-tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;background:var(--gold);color:#3A2A00;font-size:11px;font-weight:800;letter-spacing:.05em;text-transform:uppercase}
  .bonus-btn svg{width:11px;height:11px;color:var(--muted);transition:transform .25s}
  .bonus.open .bonus-btn svg{transform:rotate(180deg)}
  .bonus-menu{position:absolute;right:0;top:calc(100% + 10px);width:340px;padding:8px;border-radius:18px;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(-6px) scale(.98);transform-origin:top right;transition:opacity .15s,transform .2s,visibility 0s .2s;z-index:30}
  .bonus.open .bonus-menu{opacity:1;visibility:visible;transform:none;transition:opacity .2s,transform .25s cubic-bezier(.2,.8,.2,1)}
  .bm-h{padding:10px 12px 10px;font-size:12.5px;color:var(--muted)}
  .bm-h b{display:block;font-size:14px;color:var(--ink);letter-spacing:-.015em}
  .bm-i{display:grid;grid-template-columns:38px 1fr auto;gap:12px;align-items:center;padding:8px 10px;border-radius:12px;transition:background .2s}
  .bm-i:hover{background:var(--purple-tint)}
  .bm-ic{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,hsl(var(--h) 80% 66%),hsl(calc(var(--h) + 40) 75% 54%))}
  .bm-ic svg{width:20px;height:20px}
  .bm-i b{display:block;font-size:13.5px} .bm-i em{display:block;font-style:normal;font-size:12px;color:var(--muted)}
  .bm-i i{font-style:normal;font-weight:700;color:var(--faint);transition:transform .2s,color .2s}
  .bm-i:hover i{transform:translateX(3px);color:var(--purple)}
  .bm-back{display:block;margin-top:4px;padding:10px 12px;border-top:1px solid var(--border);font-size:12.5px;font-weight:600;color:var(--muted)}
  .bm-back:hover{color:var(--purple)}

  /* ---------- icon-tile problem cards ---------- */
  .pc-tile{aspect-ratio:16/11;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,hsl(var(--h) 85% 72%),hsl(calc(var(--h) + 40) 80% 56%))}
  .pc-tile::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1.5px);background-size:12px 12px;opacity:.6}
  .pc-tile svg{position:relative;width:52px;height:52px;filter:drop-shadow(0 8px 14px rgba(30,10,80,.3));transition:transform .6s cubic-bezier(.2,.8,.2,1)}
  .pcard:hover .pc-tile svg{transform:scale(1.15) rotate(-6deg) translate(var(--px,0),var(--py,0))}
  .grid.g4{grid-template-columns:repeat(4,1fr)}
  .grid.g4 .pc-head{min-height:52px}
  .grid.g4 .pc-tile{aspect-ratio:16/8}
  .grid.g4 .pc-tile svg{width:44px;height:44px}

  /* ---------- steps with option rows ---------- */
  .node.step .go{display:block;width:max-content;max-width:100%}
  .opts{list-style:none;margin-top:9px;display:grid;gap:5px}
  .opts li{padding:7px 9px;border-radius:10px;background:var(--card);border:1px solid var(--border);font-size:12px;line-height:1.35;color:var(--muted)}
  .opts b{display:block;color:var(--ink);font-size:12px;font-weight:700}

  /* ---------- books page ---------- */
  .badge-pill{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px 0 5px;border-radius:999px;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-sm);font-size:13px;font-weight:600;color:var(--muted);margin-bottom:16px;animation:rise .6s cubic-bezier(.2,.8,.2,1) both}
  .books{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0 0 30px}
  .btab{display:grid;grid-template-columns:62px 1fr;gap:14px;align-items:center;padding:12px;border-radius:20px;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-sm);text-align:left;transition:transform .35s cubic-bezier(.2,.8,.2,1),border-color .25s,box-shadow .3s;animation:rise .6s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(.1s + var(--i) * 70ms)}
  .btab:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
  .btab[aria-selected="true"]{border-color:var(--purple);box-shadow:0 0 0 3px color-mix(in srgb,var(--purple) 22%,transparent),var(--shadow-lg)}
  .btab .cover{width:62px;height:78px;border-radius:10px;display:grid;place-items:center;color:#fff;background:linear-gradient(160deg,hsl(var(--h) 80% 64%),hsl(calc(var(--h) + 40) 75% 46%));box-shadow:inset -5px 0 0 rgba(0,0,0,.14),0 8px 16px -8px rgba(40,20,90,.5)}
  .btab .cover svg{width:28px;height:28px}
  .btab b{display:block;font-size:16px;letter-spacing:-.02em}
  .btab em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);line-height:1.4;margin-top:2px}
  .btab small{display:block;margin-top:6px;font-size:10.5px;font-weight:700;letter-spacing:.09em;color:var(--purple)}
  [data-theme="dark"] .btab small{color:#C2A8FF}
  .sec{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:6px 16px;margin:0 0 14px}
  .sec h2{font-size:24px;font-weight:800;letter-spacing:-.035em}
  .sec span{font-size:13.5px;color:var(--muted)}
  .src{border-style:solid;border-color:var(--border);background:var(--card-2)}
  .loopchip.ask{border-style:solid;border-color:transparent;background:var(--purple);color:#fff}
  a.loopchip.ask:hover{color:#fff;border-color:transparent;filter:brightness(1.08)}
  .fine{margin:36px auto 0;max-width:760px;text-align:center;color:var(--faint);font-size:12.5px}
  .fine a{color:var(--muted);border-bottom:1px solid currentColor}
  @media (max-width:1100px){ .grid.g4{grid-template-columns:repeat(2,1fr)} }
  @media (max-width:700px){
    .bonus-t{display:none} .bonus-btn{padding:0 8px 0 5px;gap:6px} .bonus-menu{position:fixed;left:12px;right:12px;top:62px;width:auto}
    .books{grid-template-columns:1fr;gap:8px} .btab{grid-template-columns:44px 1fr;padding:10px} .btab .cover{width:44px;height:56px} .btab em{display:none}
    .grid.g4{grid-template-columns:1fr}
    .grid .pc-tile{aspect-ratio:1}
  }