/* =========================================================================
   COMPONENTS — every block the engine can render.
   Tokens live in design-system.css. Never hardcode a colour here.
   ========================================================================= */


*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--void);color:var(--text);font-family:var(--font-body);
  font-weight:300;font-size:1.125rem;line-height:1.75;-webkit-font-smoothing:antialiased}
p{margin:0}
strong{font-weight:500;color:var(--strong)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;
  background:radial-gradient(120% 90% at 78% 40%,var(--hero-1) 0%,var(--hero-2) 62%)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%}
.hero .inner{position:relative;max-width:74rem;margin:0 auto;
  padding:clamp(3.5rem,11vw,7rem) var(--gutter) clamp(2.5rem,7vw,4.5rem)}
.slug{font-family:var(--font-ui);font-weight:700;font-size:.78rem;color:var(--hero-eyebrow);margin:0 0 1.2rem}
.hero .lead{margin:0;color:var(--hero-dim);font-size:1.05rem;max-width:30rem}
.hero h1{margin:1.3rem 0 0;font-family:var(--font-display);font-weight:var(--h1-weight,800);
  color:var(--hero-text);
  font-size:clamp(2.3rem,8vw,4.4rem);line-height:var(--h1-leading,.96);
  letter-spacing:var(--h1-tracking,-.045em);max-width:15ch}
.hero h1 em{font-style:var(--h1-em-style,normal);color:var(--hero-accent)}
.hero .cap{margin:1.6rem 0 0;font-family:var(--font-ui);font-weight:600;font-size:.8rem;
  color:var(--hero-dim);max-width:26rem}
.hero .cap b{color:var(--hero-accent);font-weight:700}

/* ---------- shell + rail ---------- */
.shell{display:grid;grid-template-columns:1fr;max-width:74rem;margin:0 auto;padding:0 var(--gutter)}
@media (min-width:64rem){.shell{grid-template-columns:var(--rail) minmax(0,1fr);gap:0 3.5rem;align-items:start}}

.rail{padding:1.5rem 0;border-bottom:1px solid var(--line)}
.rail summary{font-family:var(--font-ui);font-weight:700;font-size:.8rem;color:var(--ice);
  cursor:pointer;list-style:none}
.rail summary::-webkit-details-marker{display:none}
.rail summary::after{content:" ▾";color:var(--dim)}
.rail ol{list-style:none;margin:1rem 0 0;padding:0}
.rail a{display:block;text-decoration:none;color:var(--dim);font-family:var(--font-ui);font-weight:600;
  font-size:.78rem;line-height:1.35;padding:.34rem .55rem;border-left:2px solid transparent;border-radius:0 2px 2px 0}
.rail a:hover{color:var(--text);background:var(--panel)}
.rail a.here{color:var(--hot);border-left-color:var(--hot);background:var(--panel)}
/* Read state is a mark, not a dimming. Encoding it in contrast alone made it
   invisible the moment --dim-2 was raised to pass AA, and colour-only state
   is the wrong call for accessibility regardless. */
.rail a.done{color:var(--dim)}
.rail a.done::after{content:" ✓";color:var(--good);font-weight:800}
.rail a.here.done::after{content:""}
.rail .meter{margin-top:1.4rem;font-family:var(--font-ui);font-weight:600;font-size:.72rem;color:var(--dim)}
.rail .bar{height:2px;background:var(--line);margin-top:.45rem}
.rail .bar i{display:block;height:2px;background:var(--hot);width:0}
@media (min-width:64rem){
  .rail{position:sticky;top:0;max-height:100vh;overflow:auto;padding:2.5rem 0;border-bottom:0}
  .rail summary{pointer-events:none}
  .rail summary::after{content:""}
}

/* ---------- text column + breakout ---------- */
.flow{display:grid;grid-template-columns:minmax(0,var(--col)) 1fr;padding:clamp(2rem,5vw,3.5rem) 0 1rem}
.flow>*{grid-column:1}
.flow>.wide{grid-column:1 / -1}      /* visuals break out past the text column */
.flow>*+*{margin-top:1.2rem}
@media (max-width:63.9rem){.flow{grid-template-columns:minmax(0,1fr)}}

/* ---------- phase markers ---------- */
.phase{display:flex;align-items:center;gap:.7rem;margin:3.4rem 0 .9rem;
  font-family:var(--font-ui);font-weight:700;font-size:.74rem;letter-spacing:.06em}
.phase::after{content:"";flex:1;height:1px;background:var(--line)}
.phase.learn{color:var(--ice)}
.phase.see{color:var(--text)}
.phase.try{color:var(--hot)}
.phase span{padding:.18rem .5rem;border-radius:2px;background:var(--fill-1)}

h2{font-family:var(--font-ui);font-weight:700;font-size:1.05rem;color:var(--text);
  margin:.2rem 0;letter-spacing:-.02em}

/* ---------- glossary: tap, not hover ---------- */
.term{display:inline;background:none;border:0;padding:0;color:inherit;font:inherit;
  border-bottom:1px dashed var(--hot);cursor:pointer}
.term::after{content:" ⓘ";color:var(--hot);font-size:.8em}
.pop{display:none;margin:.9rem 0;padding:.85rem 1rem;background:var(--hot);color:var(--on-hot);border-radius:3px;
  font-family:var(--font-ui);font-weight:600;font-size:.88rem;line-height:1.5}
.pop.open{display:block}
.pop b{display:block;font-weight:800;margin-bottom:.15rem}

/* ---------- text devices ---------- */
.statement{margin:2.4rem 0;font-family:var(--font-display);font-weight:var(--display-weight,600);
  font-size:var(--statement-size,clamp(1.35rem,4.2vw,1.9rem));line-height:var(--display-leading,1.2);
  letter-spacing:var(--display-tracking,-.03em)}

.figure{margin:2.2rem 0;padding-left:1.1rem;border-left:2px solid var(--hot)}
.figure b{display:block;font-family:var(--font-ui);font-weight:800;font-size:clamp(2.2rem,7vw,3.4rem);
  line-height:1;color:var(--hot);letter-spacing:-.04em}
.figure em{display:block;margin-top:.4rem;font-style:normal;font-family:var(--font-ui);font-weight:600;
  font-size:.8rem;color:var(--dim)}
@media (min-width:64rem){
  .figure{grid-column:2;justify-self:start;margin:0 0 0 3rem;align-self:center;max-width:14rem}
  .figure + p{margin-top:1.2rem}
}

.pull{margin:3rem 0;font-family:var(--font-display);font-weight:var(--display-weight,700);font-size:clamp(1.55rem,5vw,2.5rem);
  line-height:var(--display-leading,1.13);letter-spacing:var(--display-tracking,-.04em);max-width:22ch;border-left:3px solid var(--ice);padding-left:1.2rem}
.pull i{font-style:normal;color:var(--dim)}

.note{margin:2rem 0;padding:.9rem 1.05rem;border:1px solid var(--line);border-radius:3px;
  font-size:.98rem;color:var(--dim)}
.note b{display:block;font-family:var(--font-ui);font-weight:700;font-size:.76rem;color:var(--ice);margin-bottom:.15rem}
@media (min-width:64rem){.note{grid-column:2;margin:0 0 0 3rem;max-width:17rem;align-self:center}}

.callout{margin:2.2rem 0 1.2rem;padding:1.1rem 1.2rem;border:1px solid var(--hot);border-radius:3px}
.callout b{display:block;font-family:var(--font-ui);font-weight:700;font-size:.78rem;color:var(--hot);margin-bottom:.3rem}

/* ---------- comparison ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0 2rem;margin:2.2rem 0;font-size:.98rem;max-width:44rem}
.compare>div:first-child{border-right:1px solid var(--line);padding-right:2rem}
.compare h3{font-family:var(--font-ui);font-weight:700;font-size:.8rem;margin:0 0 .6rem;color:var(--text)}
.compare .eq h3{color:var(--hot)}   /* owner side */
.compare .dt h3{color:var(--ice)}   /* lender side */
.compare ul{margin:0;padding:0;list-style:none}
.compare li{padding:.45rem 0;border-top:1px solid var(--line);color:var(--dim)}
.compare li:first-child{border-top:0}
@media (max-width:34rem){.compare{grid-template-columns:1fr;gap:1.3rem}
  .compare>div:first-child{border-right:0;padding-right:0}}

/* ---------- two-scene block (good year / bad year) ---------- */
.scene{margin:2.2rem 0;display:grid;gap:1.4rem;grid-template-columns:1fr;max-width:44rem}
@media (min-width:44rem){.scene{grid-template-columns:1fr 1fr}}
.scene>div{padding:1.1rem 1.2rem;background:var(--panel);border-radius:4px}
.scene h4{margin:0 0 .6rem;font-family:var(--font-ui);font-weight:700;font-size:.8rem;color:var(--text)}
.scene p{font-size:.96rem;color:var(--dim);margin:0 0 .5rem}
.scene p:last-child{margin:0}
.scene b{color:var(--text);font-weight:500}

/* ---------- calculation card ---------- */
.calc{margin:2.2rem 0;padding:1.4rem 1.3rem;background:var(--panel);border-radius:4px;position:relative;max-width:40rem}
.calc .tag{position:absolute;top:.9rem;right:1rem;font-family:var(--font-ui);font-weight:600;font-size:.68rem;color:var(--dim)}
.calc dl{margin:0 0 1.1rem;font-size:.95rem;color:var(--dim)}
.calc dl div{display:flex;justify-content:space-between;gap:1rem;padding:.28rem 0}
.calc dt,.calc dd{margin:0}
.calc dd{font-family:var(--font-ui);font-weight:700;color:var(--text)}
.calc .out{display:flex;gap:2.4rem;flex-wrap:wrap;padding-top:1rem;border-top:1px solid var(--line)}
.calc .out b{display:block;font-family:var(--font-ui);font-weight:800;font-size:clamp(1.8rem,5vw,2.3rem);
  line-height:1;color:var(--hot);letter-spacing:-.04em}
.calc .out span{display:block;margin-top:.3rem;font-family:var(--font-ui);font-weight:600;font-size:.76rem;color:var(--dim)}

/* ---------- SEE IT ---------- */
.seeit{margin:1rem 0 0;padding:clamp(1.4rem,4vw,2.2rem);background:var(--panel2);border-radius:5px}
.seeit h3{margin:0 0 .35rem;font-family:var(--font-ui);font-weight:800;
  font-size:clamp(1.25rem,3.6vw,1.75rem);letter-spacing:-.03em}
.seeit .sub{margin:0 0 1.4rem;color:var(--dim);font-size:.98rem;max-width:38rem}

.grid100{display:grid;grid-template-columns:repeat(20,1fr);gap:5px;max-width:34rem}
.grid100 i{aspect-ratio:1;border-radius:50%;background:var(--ice);opacity:.28;transition:background .5s,opacity .5s}
.grid100 i.sold{background:var(--hot);opacity:1}
.legend{display:flex;gap:1.4rem;flex-wrap:wrap;margin-top:1rem;
  font-family:var(--font-ui);font-weight:600;font-size:.8rem;color:var(--dim)}
.legend b{font-weight:700}
.legend .k{display:inline-block;width:.65rem;height:.65rem;border-radius:50%;margin-right:.4rem;vertical-align:middle}

.stage{border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--stage-bg)}
.stage canvas{display:block;width:100%;height:clamp(200px,30vw,330px)}
.readout{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:.9rem;
  font-family:var(--font-ui);font-weight:600;font-size:.82rem;color:var(--dim)}
.readout b{color:var(--ice);font-weight:700;font-variant-numeric:tabular-nums}
.readout .you b{color:var(--hot)}
.hint{margin:0;font-family:var(--font-ui);font-weight:600;font-size:.74rem;color:var(--dim)}

/* payment queue (01.01.02) */
.queue{display:grid;gap:.9rem}
.qrow{display:grid;grid-template-columns:7.5rem 1fr;gap:.9rem;align-items:center}
.qrow .who{font-family:var(--font-ui);font-weight:700;font-size:.8rem;line-height:1.2}
.qrow .who small{display:block;font-weight:600;font-size:.7rem;color:var(--dim)}
.track{position:relative;height:2.6rem;background:var(--fill-1);border-radius:3px;overflow:hidden}
.track i{position:absolute;inset:0 auto 0 0;width:0;transition:width .25s ease}
.track.lender i{background:var(--ice)}
.track.owner i{background:var(--hot)}
.track.other i{background:var(--hot-soft)}
.track b{position:absolute;right:.65rem;top:50%;transform:translateY(-50%);
  font-family:var(--font-ui);font-weight:700;font-size:.85rem;font-variant-numeric:tabular-nums}
@media (max-width:34rem){.qrow{grid-template-columns:6rem 1fr}}
.verdict{margin-top:1.1rem;font-family:var(--font-ui);font-weight:600;font-size:.9rem;color:var(--ice);min-height:1.4em}

/* sliders, everywhere */
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;margin:1.2rem 0 .3rem;background:transparent;cursor:ew-resize}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:var(--line)}
input[type=range]::-moz-range-track{height:2px;background:var(--line)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;border-radius:50%;
  background:var(--hot);margin-top:-12px;border:0}
input[type=range]::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:var(--hot);border:0}

/* ---------- TRY IT ---------- */
.tryit{margin:1rem 0 0;padding:clamp(1.4rem,4vw,2rem);border:1px dashed var(--hot);border-radius:5px;
  background:var(--try-bg)}
.tryit h3{margin:0 0 1.1rem;font-family:var(--font-ui);font-weight:700;font-size:1.05rem;
  letter-spacing:-.02em;max-width:34rem}
.mcq{display:grid;gap:.55rem;max-width:32rem}
.mcq button{display:flex;gap:.7rem;align-items:flex-start;text-align:left;padding:.75rem .9rem;
  background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:3px;
  font-family:var(--font-ui);font-weight:600;font-size:.9rem;cursor:pointer;transition:.15s}
.mcq button:hover:not([disabled]){border-color:var(--dim)}
.mcq button span{color:var(--dim);font-weight:700;flex:none}
.mcq button.right{border-color:var(--good);color:var(--good)}
.mcq button.right span{color:var(--good)}
.mcq button.wrong{border-color:var(--hot);opacity:.85}
.mcq button[disabled]{cursor:default}
.fb{margin:1.1rem 0 0;font-family:var(--font-ui);font-weight:600;font-size:.92rem;line-height:1.6;min-height:1.4em}
.fb.ok{color:var(--good)}
.fb.no{color:var(--hot)}
.fb em{font-style:normal;color:var(--dim);display:block;font-weight:600;margin-top:.2rem}
.guess{max-width:32rem}
.guess .val{font-family:var(--font-ui);font-weight:800;font-size:clamp(2rem,6vw,2.8rem);
  line-height:1;color:var(--hot);letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.guess .check{margin-top:1rem;padding:.7rem 1.2rem;background:var(--hot);color:var(--on-hot);border:0;border-radius:3px;
  font-family:var(--font-ui);font-weight:800;font-size:.85rem;cursor:pointer}
.guess .check[disabled]{opacity:.45;cursor:default}

/* ---------- REMEMBER + next ---------- */
.takeaway{background:var(--takeaway-bg,var(--hot));color:var(--takeaway-fg,var(--on-hot));margin-top:3.4rem;padding:clamp(2.5rem,7vw,4.5rem) var(--gutter)}
.takeaway .in{max-width:74rem;margin:0 auto}
.takeaway .lbl{font-family:var(--font-ui);font-weight:700;font-size:.74rem;letter-spacing:.06em;opacity:.7}
.takeaway p{margin:.7rem 0 0;font-family:var(--font-display);font-weight:var(--h1-weight,700);
  font-size:clamp(1.4rem,4.6vw,2.3rem);line-height:1.18;letter-spacing:-.035em}

.next{max-width:74rem;margin:0 auto;padding:2.6rem var(--gutter) 4.5rem}
.next a{display:block;max-width:34rem;text-decoration:none;color:inherit;padding:1.2rem 1.25rem;
  border:1px solid var(--line);border-radius:4px;transition:border-color .2s,background .2s}
.next a:hover,.next a:focus-visible{border-color:var(--ice);background:var(--panel)}
.next .lbl{font-family:var(--font-ui);font-weight:600;font-size:.72rem;color:var(--dim)}
.next .ttl{font-family:var(--font-ui);font-weight:700;font-size:1rem;color:var(--ice);margin:.25rem 0 .4rem;letter-spacing:-.02em}
.next p{font-size:.95rem;color:var(--dim)}

:focus-visible{outline:2px solid var(--ice);outline-offset:3px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- sorter: "which of these is yours?" ---------- */
.sorter{display:grid;gap:.6rem;max-width:40rem}
.srow{display:grid;grid-template-columns:1fr auto;gap:.9rem;align-items:center;
  padding:.75rem .9rem;background:var(--panel);border:1px solid var(--line);border-radius:3px}
.srow .txt{font-family:var(--font-ui);font-weight:600;font-size:.9rem;line-height:1.35}
.srow .pick{display:flex;gap:.4rem;flex:none}
.srow .pick button{padding:.42rem .7rem;background:transparent;color:var(--dim);border:1px solid var(--line);
  border-radius:3px;font-family:var(--font-ui);font-weight:700;font-size:.74rem;cursor:pointer;transition:.15s}
.srow .pick button:hover:not([disabled]){color:var(--text);border-color:var(--dim)}
.srow.done .pick button[aria-pressed=true]{border-color:currentColor}
.srow.ok{border-color:var(--good)}
.srow.ok .txt{color:var(--good)}
.srow.no{border-color:var(--hot)}
.srow .why{grid-column:1 / -1;margin:0;font-family:var(--font-ui);font-weight:600;font-size:.8rem;
  color:var(--dim);line-height:1.5;display:none}
.srow.done .why{display:block}
.srow.done .pick button{cursor:default;opacity:.5}
.srow.done .pick button.chosen{opacity:1}
.score{margin:1.1rem 0 0;font-family:var(--font-ui);font-weight:700;font-size:.9rem;color:var(--ice);min-height:1.4em}
@media (max-width:34rem){.srow{grid-template-columns:1fr}.srow .pick{justify-content:flex-start}}

/* ---------- flow map: three boxes and arrows ---------- */
.flowmap{display:grid;gap:.7rem;align-items:stretch;grid-template-columns:1fr;max-width:44rem}
@media (min-width:44rem){.flowmap{grid-template-columns:1fr auto 1fr auto 1fr}}
.fbox{padding:1rem 1.1rem;background:var(--panel);border-radius:4px;text-align:center}
.fbox b{display:block;font-family:var(--font-ui);font-weight:700;font-size:.85rem;margin-bottom:.25rem}
.fbox span{font-family:var(--font-ui);font-weight:600;font-size:.76rem;color:var(--dim);line-height:1.4}
.fbox.you{border:1px solid var(--hot)}
.fbox.co{border:1px dashed var(--line);opacity:.6}
.farrow{display:flex;align-items:center;justify-content:center;color:var(--hot);
  font-family:var(--font-ui);font-weight:800;font-size:1.1rem}

/* ---------- rights grid (entitlement cards) ---------- */
.rights{display:grid;gap:var(--space-sm);grid-template-columns:1fr}
@media (min-width:40rem){.rights{grid-template-columns:1fr 1fr}}
.right{padding:1rem 1.1rem;background:var(--panel);border-radius:var(--radius-md);border-left:2px solid var(--hot)}
.right b{display:block;font-family:var(--font-ui);font-weight:700;font-size:.85rem;margin-bottom:.3rem}
.right p{font-size:var(--text-small);color:var(--dim)}

/* ---------- dividend readout ---------- */
.divout{display:flex;gap:2.4rem;flex-wrap:wrap;margin-top:1.4rem;padding-top:1.2rem;border-top:1px solid var(--line)}
.divout b{display:block;font-family:var(--font-ui);font-weight:800;font-size:clamp(1.7rem,5vw,2.3rem);
  line-height:1;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.divout .mine b{color:var(--hot)}
.divout .co b{color:var(--ice)}
.divout span{display:block;margin-top:.3rem;font-family:var(--font-ui);font-weight:600;font-size:.76rem;color:var(--dim)}

/* =========================================================================
   STICKY TOP BAR — the reading meter, visible on every screen size
   ========================================================================= */
.topbar{position:sticky;top:0;z-index:40;background:var(--bar-bg);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar .in{max-width:var(--page);margin:0 auto;padding:0 var(--gutter);
  height:2.9rem;display:flex;align-items:center;gap:.6rem}
.mark{display:inline-flex;align-items:center;gap:.4rem;flex:none;text-decoration:none;color:var(--text);
  font-family:var(--font-display);font-weight:600;font-size:.92rem;letter-spacing:.1em;line-height:1}
.mark svg{width:1.05rem;height:.68rem;color:var(--ice);flex:none;display:block}
.mark:hover{color:var(--hot)}
.mark:hover svg{color:var(--hot)}
.topbar .id{font-family:var(--font-ui);font-weight:700;font-size:.72rem;color:var(--dim);flex:none;
  padding-left:.6rem;border-left:1px solid var(--line)}
.topbar .id{font-family:var(--font-ui);font-weight:800;font-size:.78rem;flex:none;letter-spacing:-.01em}
.topbar .nm{font-family:var(--font-ui);font-weight:600;font-size:.76rem;color:var(--dim);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar .pc{margin-left:auto;flex:none;font-family:var(--font-ui);font-weight:700;font-size:.76rem;
  color:var(--hot);font-variant-numeric:tabular-nums}
.topbar .prog{height:2px;background:var(--fill-2)}
.topbar .prog i{display:block;height:2px;width:0;background:var(--hot)}
html{scroll-padding-top:3.6rem}

/* rail sits below the bar when sticky */
@media (min-width:64rem){
  .rail{top:2.9rem;max-height:calc(100vh - 2.9rem)}
}

/* =========================================================================
   TABLET + MOBILE
   ========================================================================= */
@media (max-width:63.9rem){
  .hero .inner{padding-top:clamp(2.2rem,7vw,3.5rem)}
  .rail{padding:1rem 0 1.2rem}
  .rail summary{padding:.5rem 0;font-size:.85rem}
  .rail a{padding:.6rem .65rem;font-size:.82rem}     /* bigger touch targets */
  .rail .meter{display:none}                          /* the top bar covers it */
  .compare{grid-template-columns:1fr;gap:1.4rem}
  .compare>div:first-child{border-right:0;border-bottom:1px solid var(--line);
    padding-right:0;padding-bottom:1.2rem}
}

@media (max-width:44rem){
  body{font-size:1.0625rem}
  .seeit,.tryit{padding:1.15rem 1.1rem}
  .seeit h3{font-size:1.2rem}
  .readout{flex-direction:column;align-items:flex-start;gap:.35rem}
  .grid100{gap:4px}
  .mcq button{padding:.85rem .9rem;font-size:.88rem}
  .srow{padding:.85rem .9rem}
  .srow .pick{width:100%}
  .srow .pick button{flex:1;padding:.6rem .4rem}
  .guess .check{width:100%}
  .calc .out,.divout{gap:1.4rem}
  .calc{padding:1.2rem 1.1rem}
  .flowmap{gap:.45rem}
  .farrow{transform:rotate(90deg)}                    /* arrows point down when stacked */
  .takeaway{padding:2.4rem var(--gutter)}
  .next a{padding:1.05rem 1.1rem}
  input[type=range]{margin:1.4rem 0 .5rem}
  input[type=range]::-webkit-slider-thumb{width:30px;height:30px;margin-top:-14px}
  input[type=range]::-moz-range-thumb{width:30px;height:30px}
  .pop{font-size:.92rem}
}

@media (max-width:26rem){
  .hero h1{font-size:clamp(2rem,10vw,2.6rem)}
  .qrow{grid-template-columns:1fr;gap:.4rem}
  .track{height:2.2rem}
  .legend{gap:.5rem;flex-direction:column}
}

/* ---------- breadcrumb ---------- */
.crumbs{max-width:var(--page);margin:0 auto;padding:.9rem var(--gutter) 0;
  display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;
  font-family:var(--font-ui);font-weight:600;font-size:.74rem;color:var(--dim)}
.crumbs a{color:var(--ice);text-decoration:none}
.crumbs a:hover{text-decoration:underline}
.crumbs span{color:var(--dim)}

/* ---------- hero legibility: keep text off the dot field ---------- */
.hero canvas{opacity:.55}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(100deg,var(--hero-2) 26%,var(--scrim) 52%,transparent 80%)}
.hero .inner{position:relative;z-index:1}
.hero .cap{text-wrap:pretty}
.hero h1{text-wrap:balance}

@media (max-width:63.9rem){
  .hero canvas{opacity:.32}
  .hero::after{background:linear-gradient(180deg,var(--scrim-soft) 0%,var(--hero-2) 46%)}
  .hero .lead,.hero .cap{max-width:100%}
}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);background:var(--foot-bg);margin-top:2rem}
.foot .in{max-width:var(--page);margin:0 auto;padding:2.4rem var(--gutter) 2.8rem;
  display:grid;gap:1.4rem}
@media (min-width:52rem){.foot .in{grid-template-columns:1fr auto;align-items:end}}
.foot .brand{font-family:var(--font-ui);font-weight:800;font-size:1.05rem;letter-spacing:-.02em;margin:0}
.foot .brand span{color:var(--hot)}
.foot .note{margin:.5rem 0 0;font-family:var(--font-ui);font-weight:600;font-size:.76rem;
  color:var(--dim);line-height:1.6;max-width:34rem}
.foot .links{display:flex;flex-wrap:wrap;gap:1.1rem;margin:0;padding:0;list-style:none}
.foot .links a{font-family:var(--font-ui);font-weight:600;font-size:.78rem;color:var(--ice);text-decoration:none}
.foot .links a:hover{text-decoration:underline}
.foot .copy{font-family:var(--font-ui);font-weight:600;font-size:.74rem;color:var(--dim);margin:0}
@media (min-width:52rem){.foot .copy{text-align:right}}
.next{padding-bottom:2.6rem}

/* ---------- theme switch in the top bar ---------- */
.tsw{margin-left:.6rem;flex:none;display:inline-flex;gap:2px;padding:2px;border-radius:999px;
  border:1px solid var(--line);background:var(--fill-1)}
.tsw button{border:0;cursor:pointer;background:transparent;color:var(--dim);
  font-family:var(--font-ui);font-weight:700;font-size:.66rem;letter-spacing:.04em;
  padding:.3rem .62rem;border-radius:999px;line-height:1}
.tsw button[aria-pressed="true"]{background:var(--hot);color:var(--on-hot)}
@media (max-width:34rem){ .topbar .nm{display:none} }

/* on a phone, the wordmark and lesson number stay; the title steps aside */
@media (max-width:40rem){
  .mark span{display:none}          /* crest only */
  .topbar .id{padding-left:0;border-left:0}
}

/* =========================================================================
   MARGIN LANE
   Two separate bugs lived here.

   1. A margin item placed after a full-width element started a new grid row,
      leaving column one empty — the hole. So a margin item now only leaves
      the text column when the element directly before it is a paragraph that
      is itself in the text column. p:not(.wide) is the whole fix: a pull
      quote is a <p class="pull wide"> and must not have a note beside it.

   2. The lane is not 17rem. At --page 74rem it measures about 11.5rem, which
      cannot hold a sentence. A container query on the text column asks how
      much room there actually is: 34rem of column + 3rem of gap + 20rem of
      note = 57rem before a note is allowed out of the flow. Below that it
      runs full width. At today's tokens the lane never qualifies, which is
      the intended answer — widen --page and the rule turns itself on.
   ========================================================================= */
@media (min-width:64rem){
  .flow{container-type:inline-size;container-name:flow}
  .note{grid-column:1;margin:2rem 0;max-width:var(--col);align-self:auto}

  /* A figure is a number and four words. It survives the narrow lane, so it
     keeps it — it only needs the hole fix, not the width fallback. */
  .figure{grid-column:1;margin:2.2rem 0;max-width:var(--col);align-self:auto}
  p:not(.wide) + .figure{grid-column:2;justify-self:start;margin:0 0 0 3rem;
    align-self:center;max-width:14rem}
}
@container flow (min-width:57rem){        /* 34 col + 3 gap + 20 note */
  p:not(.wide) + .note{grid-column:2;margin:0 0 0 3rem;max-width:20rem;align-self:center}
}

/* ---------- breakout panels: capped so a line never runs too long ---------- */
.seeit,.tryit{max-width:46rem}

/* ---------- rail meter: lessons read, not scroll depth ---------- */
.rail .meter b{font-weight:700;font-variant-numeric:tabular-nums}
.rail .meter .readCount{color:var(--hot)}   /* pink is you */
.rail .meter .readTotal{color:var(--dim)}

/* =========================================================================
   ENDINGS
   ========================================================================= */

/* ---------- commitment line (replaces the star rating) ----------
   Asks what shifted, not whether the reader was pleased. */
.commit{border-top:1px solid var(--line);margin-top:3rem}
.commit .in{max-width:var(--page);margin:0 auto;padding:2.2rem var(--gutter)}
.commit .q{margin:0;font-family:var(--font-ui);font-weight:700;font-size:.86rem;color:var(--dim)}
.commit .opts{display:grid;gap:.55rem;margin:1rem 0 0;max-width:36rem}
@media (min-width:40rem){.commit .opts{grid-template-columns:1fr 1fr}}
.commit .opts button{text-align:left;padding:.8rem .95rem;background:var(--panel);color:var(--text);
  border:1px solid var(--line);border-radius:3px;font-family:var(--font-ui);font-weight:600;
  font-size:.88rem;line-height:1.4;cursor:pointer;transition:.15s}
.commit .opts button:hover:not([disabled]){border-color:var(--dim)}
.commit .opts button[aria-pressed="true"]{border-color:var(--hot);color:var(--hot)}
.commit .opts button[disabled]{cursor:default}
.commit .said{margin:.9rem 0 0;font-family:var(--font-ui);font-weight:600;font-size:.8rem;
  color:var(--ice);min-height:1.2em}

/* ---------- frozen visual (replaces the pink Remember band) ----------
   The lesson's own visual, stilled, with one line under it. */
.freeze{border-top:1px solid var(--line);margin-top:0;padding:clamp(2.4rem,6vw,3.6rem) var(--gutter)}
.freeze .in{max-width:46rem;margin:0 auto}
.freeze .lbl{display:block;font-family:var(--font-ui);font-weight:700;font-size:.74rem;
  letter-spacing:.06em;color:var(--dim)}
.freeze .art{margin-top:1.4rem;pointer-events:none}
.freeze .art input[type=range]{display:none}
.freeze .art .hint,.freeze .art .verdict{margin-top:.9rem}
.freeze .cap{margin:1.6rem 0 0;font-family:var(--font-display);font-weight:var(--display-weight,600);
  font-size:clamp(1.15rem,3.4vw,1.6rem);line-height:1.3;letter-spacing:var(--display-tracking,-.025em)}

/* ---------- contextual caution ---------- */
.caution{max-width:var(--page);margin:0 auto;padding:0 var(--gutter)}
.caution p{margin:1.2rem 0 0;padding:.7rem .9rem;border-left:2px solid var(--ice);
  background:var(--fill-1);border-radius:0 3px 3px 0;
  font-family:var(--font-ui);font-weight:600;font-size:.78rem;line-height:1.6;color:var(--dim)}

/* =========================================================================
   SCROLLBARS
   The one piece of chrome the browser drew for us. Themed from tokens so it
   changes with ink/paper like everything else, and deliberately neutral —
   pink carries meaning and must not be spent on a scrollbar.
   ========================================================================= */
html{scrollbar-width:thin;scrollbar-color:var(--sb-thumb) var(--sb-track)}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:var(--sb-track)}
::-webkit-scrollbar-thumb{background:var(--sb-thumb);border-radius:999px;
  border:3px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-thumb:hover{background:var(--sb-thumb-hi);background-clip:padding-box}
::-webkit-scrollbar-corner{background:var(--sb-track)}

/* the rail scrolls on its own once it is sticky */
.rail{scrollbar-width:thin;scrollbar-color:var(--sb-thumb) transparent}

/* ---------- disclaimer page ---------- */
.page{max-width:44rem;margin:0 auto;padding:clamp(2.5rem,7vw,4rem) var(--gutter) 3rem}
.page h1{font-family:var(--font-display);font-weight:var(--h1-weight,700);
  font-size:clamp(1.9rem,6vw,2.8rem);line-height:1.1;letter-spacing:-.03em;margin:0 0 1.6rem}
.page h2{margin:2.4rem 0 .6rem}
.page p{margin:0 0 1rem;color:var(--dim)}
.page p strong{color:var(--text)}
.page .updated{font-family:var(--font-ui);font-weight:600;font-size:.76rem;color:var(--dim-2)}

/* Dark jackets keep a light bold. The hero, the Remember band and the glossary
   pop stay dark in both themes, so the page-level --strong would bury text in
   them — paper's near-black bold on deep teal measured 1.94:1. */
.hero{--strong:var(--hero-text)}
.takeaway{--strong:var(--takeaway-fg,var(--on-hot))}
.pop{--strong:var(--on-hot)}

/* ---------- capital stack (01.01.03): four numbers, nested ---------- */
.stack{display:grid;gap:.8rem}
.srow2{display:grid;grid-template-columns:10rem 1fr;gap:1rem;align-items:center}
.srow2 .lab b{display:block;font-family:var(--font-ui);font-weight:700;font-size:.82rem;line-height:1.2}
.srow2 .lab small{display:block;font-family:var(--font-ui);font-weight:600;font-size:.7rem;color:var(--dim);margin-top:.15rem}
.track2{position:relative;height:2.4rem;background:var(--fill-1);border-radius:3px;overflow:hidden}
.track2 i{position:absolute;inset:0 auto 0 0;background:var(--hot-soft);border-right:2px solid var(--hot)}
.track2 em{position:absolute;right:.7rem;top:50%;transform:translateY(-50%);font-style:normal;
  font-family:var(--font-ui);font-weight:700;font-size:.82rem;font-variant-numeric:tabular-nums}
@media (max-width:34rem){.srow2{grid-template-columns:1fr;gap:.35rem}}

/* ---------- tappable route / state chips (01.02) ---------- */
.routes{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.2rem}
.route{flex:1 1 8rem;text-align:left;padding:.7rem .8rem;background:var(--panel);color:var(--text);
  border:1px solid var(--line);border-radius:3px;cursor:pointer;transition:.15s}
.route:hover{border-color:var(--dim)}
.route.on{border-color:var(--hot)}
.route b{display:block;font-family:var(--font-ui);font-weight:800;font-size:.8rem;letter-spacing:-.01em}
.route.on b{color:var(--hot)}
.route span{display:block;margin-top:.15rem;font-family:var(--font-ui);font-weight:600;
  font-size:.7rem;color:var(--dim);line-height:1.35}
.routeout .rname{margin:0 0 1rem;font-size:.98rem;color:var(--dim);min-height:2.6em}

/* ---------- primary vs secondary lanes (01.02.03) ---------- */
.lane{margin-bottom:1.4rem}
.lane:last-child{margin-bottom:0}
.lname{margin-bottom:.6rem}
.lname b{font-family:var(--font-ui);font-weight:800;font-size:.82rem}
.lname small{margin-left:.5rem;font-family:var(--font-ui);font-weight:600;font-size:.72rem;color:var(--dim)}

/* =========================================================================
   CHAPTER NAVIGATION
   A chapter used to be a dead end — the rail showed only the chapter you
   were already in, so the sole route onward was the last lesson's next card.
   ========================================================================= */
.chapnav{margin-top:1.6rem;padding-top:1.2rem;border-top:1px solid var(--line);
  display:grid;gap:.6rem}
.chapnav a,.chapnav .soon{display:block;text-decoration:none;
  font-family:var(--font-ui);font-weight:700;font-size:.78rem;line-height:1.35;
  color:var(--text)}
.chapnav a:hover{color:var(--hot)}
.chapnav span{display:block;font-weight:600;font-size:.68rem;letter-spacing:.04em;
  color:var(--dim);margin-bottom:.2rem}
.chapnav .soon{color:var(--dim-2);font-weight:600}
.chapnav .soon em{font-style:normal;display:block;font-size:.68rem;color:var(--dim-2);margin-top:.15rem}

/* =========================================================================
   THE DESKTOP GRID — two right edges, not three.
   Prose ended at one width, breakout panels at a second, the page shell at a
   third. Nothing aligned, which is what read as unfinished. Panels now run to
   the same edge as the hero, the breadcrumb and the footer; prose keeps its
   reading measure and nothing else does.
   ========================================================================= */
@media (min-width:64rem){
  .seeit,.tryit{max-width:none}
}

/* Big screens get one step up in reading size. The column is content-sized
   by the grid, so widening --col here does nothing; the size bump is what
   moves the measure, from 66 characters to 63. */
@media (min-width:90rem){
  body{font-size:1.1875rem}
}

/* =========================================================================
   THE CLOSING THREAD
   The ending used to replay the visual the reader had just finished using,
   which taught nothing the second time. It now shows the chapter's argument
   accumulating — every Remember line in order, this lesson's last. The same
   section therefore reads differently at lesson two and at lesson eight.
   ========================================================================= */
.freeze .threadlbl{margin:2.2rem 0 .9rem;font-family:var(--font-ui);font-weight:700;
  font-size:.72rem;letter-spacing:.06em;color:var(--dim)}
.thread{list-style:none;margin:0;padding:0;display:grid;gap:.7rem;counter-reset:none}
.thread li{display:grid;grid-template-columns:4.6rem 1fr;gap:.9rem;align-items:baseline;
  padding-left:.9rem;border-left:2px solid var(--line)}
.thread li b{font-family:var(--font-ui);font-weight:700;font-size:.72rem;color:var(--dim-2);
  font-variant-numeric:tabular-nums}
.thread li span{font-size:.94rem;line-height:1.6;color:var(--dim)}
.thread li.read{border-left-color:var(--good)}
.thread li.read b{color:var(--good)}
.thread li.now{border-left-color:var(--hot)}
.thread li.now b{color:var(--hot)}
.thread li.now span{color:var(--text)}
@media (max-width:34rem){
  .thread li{grid-template-columns:1fr;gap:.15rem}
}

/* ---------- a figure that cites the panel it was counted from ---------- */
.figure.cites a{display:block;text-decoration:none;color:inherit}
.figure.cites .citehint{display:block;margin-top:.45rem;font-family:var(--font-ui);
  font-weight:700;font-size:.68rem;letter-spacing:.04em;color:var(--ice)}
.figure.cites .citehint::after{content:" \2191"}
.figure.cites a:hover .citehint,.figure.cites a:focus-visible .citehint{color:var(--text)}
.figure.cites a:hover b{color:var(--hot)}
/* the sticky bar must not cover the panel the reader just jumped to */
.seeit[id]{scroll-margin-top:4.2rem}
.seeit[id]:focus{outline:none}
.seeit[id]:focus-visible{outline:2px solid var(--ice);outline-offset:3px}

/* =========================================================================
   GRANTHARA AI — the panel
   Reads the same tokens as everything else, so both themes come for free.
   ========================================================================= */
.ai-fab{position:fixed;right:clamp(1rem,3vw,2rem);bottom:clamp(1rem,3vw,2rem);z-index:60;
  display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.15rem;
  background:var(--hot);color:var(--on-hot);border:0;border-radius:999px;cursor:pointer;
  font-family:var(--font-ui);font-weight:800;font-size:.8rem;letter-spacing:-.01em;
  box-shadow:0 10px 30px -12px var(--shadow)}
.ai-fab:hover{transform:translateY(-1px)}
.ai-fab::before{content:"";width:.5rem;height:.5rem;border-radius:50%;background:var(--on-hot);opacity:.7}
body.ai-open .ai-fab{display:none}

.ai-panel{position:fixed;inset:auto 0 0 auto;z-index:61;display:none;flex-direction:column;
  width:min(30rem,100vw);height:min(40rem,100vh);background:var(--void);
  border-left:1px solid var(--line);border-top:1px solid var(--line);
  box-shadow:-20px 0 60px -30px var(--shadow)}
body.ai-open .ai-panel{display:flex}
@media (max-width:34rem){.ai-panel{width:100vw;height:100vh}}

.ai-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.9rem 1.1rem;border-bottom:1px solid var(--line);flex:none}
.ai-head b{display:block;font-family:var(--font-ui);font-weight:800;font-size:.9rem}
.ai-head small{display:block;font-family:var(--font-ui);font-weight:600;font-size:.68rem;color:var(--dim)}
.ai-x{background:none;border:0;color:var(--dim);font-size:1.4rem;line-height:1;cursor:pointer;padding:.2rem .4rem}
.ai-x:hover{color:var(--text)}

.ai-log{flex:1;overflow-y:auto;padding:1.1rem;display:flex;flex-direction:column;gap:1.1rem;
  scrollbar-width:thin;scrollbar-color:var(--sb-thumb) transparent}
.ai-turn{font-size:.94rem;line-height:1.65}
.ai-turn p{margin:0 0 .7rem}
.ai-turn p:last-child{margin:0}
.ai-you{align-self:flex-end;max-width:85%;background:var(--panel);border-radius:4px;
  padding:.6rem .85rem;font-family:var(--font-ui);font-weight:600;font-size:.88rem}
.ai-ai{max-width:100%}
.ai-num{font-variant-numeric:tabular-nums;color:var(--dim)}
.ai-strat{font-family:var(--font-ui);font-weight:700;font-size:.7rem;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ice);margin:0 0 .5rem!important}
.ai-list{margin:.2rem 0 .8rem;padding-left:1.1rem;font-size:.9rem;color:var(--dim)}
.ai-list li{margin:.25rem 0}

.ai-mis{margin:.9rem 0 0;padding:.7rem .85rem;border-left:2px solid var(--ice);background:var(--fill-1)}
.ai-mis b{display:block;font-family:var(--font-ui);font-weight:700;font-size:.66rem;
  letter-spacing:.1em;text-transform:uppercase;color:var(--ice);margin-bottom:.3rem}
.ai-mis p{font-size:.88rem;margin:0 0 .35rem!important;color:var(--dim)}
.ai-mis .ai-fix{color:var(--text);margin:0!important}

.ai-cite{margin:.9rem 0 0;padding-top:.7rem;border-top:1px solid var(--line)}
.ai-cite b{display:block;font-family:var(--font-ui);font-weight:700;font-size:.64rem;
  letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-bottom:.35rem}
.ai-cite a{display:block;font-family:var(--font-ui);font-weight:600;font-size:.78rem;
  color:var(--ice);text-decoration:none;padding:.15rem 0}
.ai-cite a:hover{text-decoration:underline}

.ai-acts,.ai-seed{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.9rem}
.ai-acts button,.ai-seedq{padding:.42rem .7rem;background:transparent;color:var(--dim);
  border:1px solid var(--line);border-radius:999px;cursor:pointer;
  font-family:var(--font-ui);font-weight:600;font-size:.72rem}
.ai-acts button:hover,.ai-seedq:hover{color:var(--text);border-color:var(--dim)}
.ai-acts button[data-act="confused"]{border-color:var(--hot-soft);color:var(--hot)}
.ai-acts button[data-act="confused"]:hover{border-color:var(--hot)}

.ai-form{display:flex;gap:.5rem;padding:.8rem 1.1rem;border-top:1px solid var(--line);flex:none}
.ai-form input{flex:1;background:var(--panel);border:1px solid var(--line);border-radius:3px;
  padding:.6rem .75rem;color:var(--text);font-family:var(--font-ui);font-weight:600;font-size:.85rem}
.ai-form input:focus{outline:none;border-color:var(--ice)}
.ai-form button{padding:.6rem 1rem;background:var(--hot);color:var(--on-hot);border:0;border-radius:3px;
  cursor:pointer;font-family:var(--font-ui);font-weight:800;font-size:.78rem}
.ai-note{margin:0;padding:0 1.1rem .9rem;font-family:var(--font-ui);font-weight:600;
  font-size:.66rem;line-height:1.55;color:var(--dim-2);flex:none}

/* ---------- a visualisation inside an AI answer ---------- */
.ai-viz{margin:1rem 0 0;padding:.9rem;background:var(--panel2);border-radius:4px}
.ai-viz figcaption{margin-top:.7rem;font-family:var(--font-ui);font-weight:600;
  font-size:.72rem;line-height:1.5;color:var(--dim)}
.ai-viz .grid100{max-width:100%;gap:3px}
.ai-viz .stage canvas{height:clamp(150px,40vw,200px)}
.ai-viz .flowmap{gap:.4rem}
.ai-viz .fbox{padding:.6rem .7rem}
.ai-viz .fbox b{font-size:.76rem}
.ai-viz .fbox span{font-size:.68rem}
.ai-viz .qrow{grid-template-columns:5.5rem 1fr}
.ai-viz .srow2{grid-template-columns:7rem 1fr}
.ai-viz .divout{gap:1.2rem}
.ai-viz .divout b{font-size:clamp(1.2rem,5vw,1.5rem)}
.ai-viz .readout{font-size:.74rem}