/* Token Meter. Look: the webinar deck (Space Grotesk headings, DM Sans body, JetBrains Mono numbers) on the 100x palette
   used by the Token Tax Audit: #F7F7F7 surface, coral #FE6242 for the one action, hum green for savings.
   Two colours carry the lesson on every module: grey for old history the AI re-reads, coral for the new words.
   The four cost categories keep their fixed colours inside "Show the maths".
   Under 1000px: one column, phone first. From 1000px: two panes (controls left, picture and big number right) sized to be read off a projector. */
:root{
  --bg:#F7F7F7;--bg2:#EFEFEF;--card:#FFFFFF;--ink:#1E1E1E;--ink2:#5C5C5C;--ink3:#8C8C8C;--line:#E4E4E4;--line2:#D4D4D4;
  --coral:#FE6242;--coral-soft:#FFE1DB;--coral-ink:#C8391F;
  --hum:#43B907;--hum-soft:#E9F7DF;--hum-ink:#2F8A05;
  --c-read:#FE6242;--c-write:#FFA48F;--c-out:#1E1E1E;--c-in:#9C9C9C;
  --c-old:#C9C9C9;--c-new:#FE6242;
  --head:'Space Grotesk',-apple-system,'Segoe UI',system-ui,sans-serif;
  --sans:'DM Sans',-apple-system,'Segoe UI',system-ui,sans-serif;
  --mono:'JetBrains Mono','SFMono-Regular',Menlo,monospace;
  --r:12px;--e-out:cubic-bezier(.16,1,.3,1);
  color-scheme:light;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 var(--sans);-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%}
[hidden]{display:none!important}
h1,h2,h3{font-family:var(--head);font-weight:600;letter-spacing:-.03em;margin:0;text-wrap:balance}
h1{font-size:clamp(28px,7vw,40px);line-height:1.08}
h2{font-size:22px;line-height:1.2}
p{margin:0}
a{color:var(--coral-ink)}
code{font:500 .9em var(--mono);background:var(--bg2);padding:1px 5px;border-radius:4px}
button,select,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--coral);outline-offset:2px}

.app{max-width:780px;margin:0 auto;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;padding:calc(8px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) calc(24px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;height:56px}
.brand{font:700 13px var(--mono);letter-spacing:.14em;color:var(--ink);text-decoration:none}
.brand b{color:var(--coral);font-weight:700}
/* the header settings read as one quiet line of text: USD / INR · Prices of Sonnet 5.5 */
.top .money{margin-left:auto;gap:0;flex-wrap:nowrap;align-items:center}
.top .money button{min-height:0;padding:2px 4px;border:0;background:none;font:500 13px var(--mono);color:var(--ink3);border-radius:4px}
.top .money button[aria-checked=true]{color:var(--ink);background:none}
.top .money button:first-child::after{content:"/";color:var(--line2);margin-left:6px}
.price-on{font:500 13px var(--sans);color:var(--ink3);display:flex;align-items:center;gap:4px}
.price-on::before{content:"·";margin-right:8px;color:var(--line2)}
.price-on select{font:500 13px var(--mono);padding:2px 18px 2px 2px;border:0;border-bottom:1px solid var(--line2);border-radius:0;background:transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%238C8C8C' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 2px center;color:var(--ink);-webkit-appearance:none;appearance:none;cursor:pointer}
@media (max-width:420px){.price-on span{display:none}.price-on::before{margin-right:2px}.top{gap:8px}.price-on{min-width:0}.price-on select{min-width:0;max-width:30vw;text-overflow:ellipsis}}

.steps{display:flex;gap:4px 18px;overflow-x:auto;scrollbar-width:none;margin:0 -16px;padding:2px 16px 14px;border-bottom:1px solid var(--line)}
.steps::-webkit-scrollbar{display:none}
.steps a{flex:none;display:flex;align-items:center;gap:6px;padding:6px 0;border:0;border-bottom:2px solid transparent;border-radius:0;background:none;color:var(--ink3);text-decoration:none;font:500 13px var(--sans);white-space:nowrap}
.steps a:hover{color:var(--ink2)}
.steps a i{font:500 11px var(--mono);font-style:normal;color:var(--ink3)}
.steps a.on{color:var(--ink);border-bottom-color:var(--ink);background:none}
.steps a.on i{color:var(--coral)}
.steps a.done:not(.on) i{color:var(--hum-ink)}

#view{flex:1}
.mod{display:flex;flex-direction:column;gap:16px;padding:12px 0 8px;animation:in .35s var(--e-out)}
.mod .l,.mod .r{display:flex;flex-direction:column;gap:16px;min-width:0}
@keyframes in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.eyebrow{font:500 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink3)}
.sub{font-size:17px;color:var(--ink2);max-width:60ch}
.tiny{font:12px/1.5 var(--mono);color:var(--ink3)}
.cap{font-size:13px;color:var(--ink3)}
.cap s{display:inline-block;width:10px;height:10px;border-radius:2px;vertical-align:-1px;margin:0 3px 0 6px;text-decoration:none}
.note{font-size:14px;color:var(--ink2);background:var(--bg2);border-radius:8px;padding:10px 12px}
.err{font-size:14px;color:var(--coral-ink);background:var(--coral-soft);border-radius:8px;padding:10px 12px}
@media (min-width:760px){.note.desk{display:none}}
details.maths,details.exact{border-top:1px solid var(--line);padding-top:10px;font-size:14px;color:var(--ink2)}
details summary{cursor:pointer;font:500 13px var(--sans);color:var(--ink3);list-style:none;display:flex;align-items:center;gap:6px}
details summary::-webkit-details-marker{display:none}
details summary::before{content:"+";font:600 14px var(--mono);width:16px;color:var(--ink3)}
details[open] summary::before{content:"−"}
details.maths p{margin-top:8px;font:13px/1.5 var(--mono);color:var(--ink3)}
details.exact .row{margin-top:8px}
details.exact .tiny{margin-top:6px}

/* controls */
.controls{display:flex;flex-direction:column;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.ctl{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--ink2)}
.ctl>span{display:flex;align-items:center;justify-content:space-between;gap:8px}
.ctl output{font:600 14px var(--mono);color:var(--ink)}
.ctl select,.row select{padding:9px 10px;border:1px solid var(--line2);border-radius:8px;background:var(--card);font-size:14px;max-width:100%}
input[type=range]{width:100%;accent-color:var(--coral);height:28px;margin:0}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:9px;padding:11px 16px;background:var(--coral);color:#fff;font:500 15px var(--sans);text-decoration:none;transition:transform .12s;min-height:44px}
.btn:active{transform:scale(.98)}
.btn.ghost{background:var(--card);color:var(--ink);border:1px solid var(--line2)}
.btn.ghost:hover{border-color:var(--ink3)}
.btn.dark{background:var(--ink);color:#fff}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.file{position:relative;overflow:hidden}
.btn.file input,.dropzone input{position:absolute;inset:0;opacity:0;cursor:pointer}
.seg{display:flex;flex-wrap:wrap;gap:6px}
.seg button{padding:10px 14px;border:1px solid var(--line2);border-radius:999px;background:var(--card);font-size:14px;min-height:44px}
.seg button[aria-checked=true]{background:var(--ink);color:#fff;border-color:var(--ink)}

/* basis tags */
.bs{display:inline-block;cursor:help;font:600 9.5px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;font-style:normal;padding:3px 5px;border-radius:4px;vertical-align:2px;white-space:nowrap}
.bs[data-b=docs]{background:#E6EEF9;color:#2C5BA0}
.bs[data-b=calc]{background:var(--hum-soft);color:var(--hum-ink)}
.bs[data-b=bench]{background:#F3E8FA;color:#7A3FA0}
.bs[data-b=est]{background:#FFF1D6;color:#9A6400}

/* visuals */
.visual{display:flex;flex-direction:column;gap:10px}
.stack{display:flex;height:44px;border-radius:8px;overflow:hidden;background:var(--bg2)}
.stack i{display:block;height:100%;transition:flex-grow .35s var(--e-out)}
.k-read{background:var(--c-read)}.k-write{background:var(--c-write)}.k-output{background:var(--c-out)}.k-input{background:var(--c-in)}
.k-old{background:var(--c-old)}.k-new{background:var(--c-new)}
.legend{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px;margin-top:10px}
.legend div{display:flex;gap:8px;align-items:flex-start;font-size:13px;color:var(--ink2)}
.legend s{flex:none;width:10px;height:10px;border-radius:2px;margin-top:5px;text-decoration:none}
.legend b{display:block;font:600 15px var(--mono);color:var(--ink)}
.cols{display:flex;align-items:flex-end;gap:2px;height:120px;border-bottom:1px solid var(--line2)}
.cols span{flex:1;display:flex;flex-direction:column-reverse;min-width:0}
.cols span i{display:block}
.cols span.clip{position:relative}
.cols span.clip::after{content:"↑";position:absolute;top:-16px;left:50%;transform:translateX(-50%);font:600 11px var(--mono);color:var(--ink3)}
.headline{background:var(--ink);color:#fff;border-radius:var(--r);padding:18px 18px 16px;display:flex;flex-direction:column;gap:4px;position:relative}
.headline .cue{font:600 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--coral)}
.headline .cue.good{color:#7FDB4A}
.headline .n{font:700 clamp(34px,10vw,52px)/1 var(--mono);letter-spacing:-.03em;color:var(--coral)}
.headline .n.good{color:#7FDB4A}
.headline p{font-size:15px;color:#D6D6D6}
.headline p b{color:#fff;font-weight:600}
.headline .bs{vertical-align:6px}

/* module 1: one thing on screen at a time. data-stage on the section: setup (controls), play (the chat alone),
   cost (chat shrinks beside the per-message columns), total (the sum line appears). Everything else fades or collapses. */
.stage .head{display:flex;flex-direction:column;gap:10px;transition:gap .3s}
.stage:not([data-stage=setup]) .head h1{font-size:24px}
.stage:not([data-stage=setup]) .head .sub,.stage:not([data-stage=setup]) .head .eyebrow{display:none}
.stage[data-stage=setup] .body,.stage[data-stage=setup] .sum,.stage[data-stage=setup] .adv,.stage[data-stage=setup] .chip{display:none}
.stage:not([data-stage=setup]) #m1-ctl{display:none}
.chip{display:flex;align-items:center;justify-content:space-between;gap:12px;font:500 13px var(--mono);color:var(--ink2);background:var(--card);border:1px solid var(--line);border-radius:999px;padding:8px 8px 8px 16px}
.link{background:none;border:0;padding:4px 10px;border-radius:999px;font:500 13px var(--sans);color:var(--coral-ink);text-decoration:underline;text-underline-offset:2px}
.stage .body{display:grid;grid-template-columns:1fr 0fr;gap:0;transition:grid-template-columns .5s var(--e-out),gap .5s}
.stage[data-stage=cost] .body,.stage[data-stage=total] .body{grid-template-columns:220px 1fr;gap:20px}
.stage .focus{display:flex;flex-direction:column;gap:8px;min-width:0}
.stage .reveal{min-width:0;overflow:hidden;opacity:0;max-height:0;transition:opacity .4s .25s}
.stage[data-stage=cost] .reveal,.stage[data-stage=total] .reveal{max-height:none}
.stage[data-stage=cost] .reveal,.stage[data-stage=total] .reveal{opacity:1}
.stage .live{font-size:15px;color:var(--ink2);min-height:1.5em}
.stage[data-stage=cost] .live,.stage[data-stage=total] .live{font-size:13px;color:var(--ink3)}
.stage .sum{opacity:0;max-height:0;overflow:hidden;transition:opacity .45s,max-height .45s;font-size:17px;color:var(--ink2);border-top:1px solid var(--line);padding-top:0}
.stage[data-stage=total] .sum{opacity:1;max-height:200px;padding-top:14px}
.sum .n{font:700 44px/1 var(--mono);letter-spacing:-.03em;color:var(--coral);vertical-align:-6px;margin-right:8px}
.sum b{color:var(--ink);font-weight:600}
.stage[data-stage=play]:not(.played) .adv{visibility:hidden}
.stage[data-stage=total] #m1-more{display:none}
.tstack{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:12px;display:flex;flex-direction:column;gap:10px;min-height:300px;transition:padding .4s}
.stage[data-stage=cost] .tstack,.stage[data-stage=total] .tstack{padding:8px;min-height:0;gap:6px}
/* two zones: grey = read again (setup + old turns), coral = the new turn. Each zone names itself and its size in tokens */
.tstack .zone{display:flex;flex-direction:column;gap:4px;border-radius:8px;padding:8px;border:1px dashed var(--line2)}
.tstack .zone.new{border:1.5px solid var(--c-new);background:#FFF7F5}
.tstack .zh{display:flex;justify-content:space-between;gap:8px;font:600 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ink3)}
.tstack .zone.new .zh{color:var(--coral-ink)}
.tstack .ctx{border-radius:6px;background:repeating-linear-gradient(-45deg,#D6D6D6 0 6px,#CDCDCD 6px 12px);color:var(--ink);padding:7px 9px;display:flex;flex-direction:column;flex:none;font-size:12px;line-height:1.35}
.tstack .ctx b{font:600 12px var(--mono)}
.tstack .ctx span{color:var(--ink2)}
.tstack .fold{flex:none;border-radius:6px;background:var(--c-old);display:flex;align-items:center;justify-content:center;font:500 11px var(--mono);color:var(--ink2);min-height:16px;overflow:hidden;transition:height .25s var(--e-out)}
/* chat bubbles: yours on the right, Claude's on the left, each named. Grey when old, coral when new */
.tstack .turn{display:flex;flex-direction:column;gap:3px}
.tstack .b{max-width:82%;padding:4px 9px;border-radius:10px;background:var(--c-old);color:var(--ink);font-size:12.5px;line-height:1.4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tstack .b b{font:600 10px var(--mono);letter-spacing:.06em;text-transform:uppercase;margin-right:7px;opacity:.7}
.tstack .b.you{align-self:flex-end;border-bottom-right-radius:3px}
.tstack .b.cl{align-self:flex-start;border-bottom-left-radius:3px}
.tstack .turn.hot .b{background:var(--c-new);color:#fff}
.tstack .turn.hot .b b{opacity:.85}
.stage[data-stage=cost] .tstack .b,.stage[data-stage=total] .tstack .b{font-size:11px;max-width:92%}
.stage[data-stage=cost] .tstack .ctx span,.stage[data-stage=total] .tstack .ctx span{display:none}
.stage[data-stage=cost] .tstack .fold span,.stage[data-stage=total] .tstack .fold span{font-size:10px}
/* per-message chart: dollar gridlines on the left, message numbers underneath */
.reveal{display:flex;flex-direction:column;gap:8px;justify-content:flex-end}
.reveal .ct{font-size:17px}
.reveal .key{display:flex;flex-wrap:wrap;gap:4px 16px;font-size:13px;color:var(--ink2)}
.reveal .key s{display:inline-block;width:10px;height:10px;border-radius:2px;vertical-align:-1px;margin-right:6px;text-decoration:none}
.chart{padding:22px 0 0 56px}
.chart .plot{position:relative;border-bottom:1px solid var(--ink3)}
.chart .plot>i{position:absolute;left:0;right:0;height:0;border-top:1px dashed var(--line)}
.chart .plot>i em{position:absolute;right:calc(100% + 8px);top:-8px;font:500 11px var(--mono);font-style:normal;color:var(--ink3);white-space:nowrap}
.chart .bars{position:absolute;inset:0;display:flex;align-items:flex-end;gap:3px}
.chart .bars span{flex:1;min-width:0;height:100%;display:flex;flex-direction:column;justify-content:flex-end;position:relative}
.chart .bars span i{display:block;flex:none;transition:height .25s var(--e-out)}
.chart .bars span .k-new{order:1;border-radius:2px 2px 0 0}
.chart .bars span .k-old{order:2}
.chart .bars em{font-style:normal;font:500 10px var(--mono);color:var(--ink3);text-align:center;white-space:nowrap}
.chart .bars .v{order:0;padding-bottom:3px;color:var(--ink2)}
.chart .bars .clip .v{position:absolute;top:-18px;left:0;right:0;color:var(--ink)}
.chart .bars span:last-child .v{align-self:flex-end}
.chart .bars .x{position:absolute;top:calc(100% + 4px);left:0;right:0}
.chart .xt{font:500 11px var(--mono);color:var(--ink3);text-align:center;padding-top:22px}
.chart .cn{font-size:13px;color:var(--ink3);padding-top:6px}

/* module 2: two transcripts */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:560px){.duo{grid-template-columns:1fr}}
.duo .side{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:12px;display:flex;flex-direction:column;gap:8px}
.duo .side h3{font-size:15px;color:var(--ink2);font-family:var(--sans);font-weight:500;letter-spacing:0}
.duo .tstack.sm{min-height:0;padding:8px;gap:6px;border:0;padding:0}
.tstack.sm .b{font-size:11.5px;max-width:92%}
.tstack.sm .ctx span{display:none}
.duo .tot{display:flex;align-items:baseline;justify-content:space-between;font:700 22px var(--mono);letter-spacing:-.02em}
.duo .tot small{font:500 11px var(--mono);color:var(--ink3);text-transform:uppercase;letter-spacing:.08em}
.duo .meter{height:8px;border-radius:4px;background:var(--bg2);overflow:hidden}
.duo .meter i{display:block;height:100%;background:var(--ink);transition:width .35s var(--e-out)}

/* module 3 */
.drop{background:var(--card);border:1px dashed var(--line2);border-radius:var(--r);padding:8px;touch-action:none}
.drop.over{border-color:var(--coral);background:var(--coral-soft)}
#m3-canvas{display:block;width:100%;height:auto;cursor:crosshair}

/* module 4: highlighted panes */
.two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:620px){.two{grid-template-columns:1fr}}
.pane{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.pane-h{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:8px 12px;border-bottom:1px solid var(--line);font-size:13px}
.pane-h span{font:600 13px var(--mono)}
.pane-h span small{font-weight:500;color:var(--coral-ink)}
.edit{position:relative;height:260px}
.edit .hl,.edit textarea{position:absolute;inset:0;margin:0;padding:10px 12px;font:12px/1.5 var(--mono);white-space:pre-wrap;word-break:break-all;overflow:auto;border:0;background:transparent;width:100%;height:100%}
.edit .hl{color:var(--ink2);pointer-events:none;scrollbar-width:none}
.edit .hl::-webkit-scrollbar{display:none}
.edit .hl mark{background:var(--coral-soft);color:var(--coral-ink);border-radius:2px}
.edit textarea{color:transparent;caret-color:var(--ink);resize:none;outline:none}
.edit textarea::selection{background:rgba(254,98,66,.25)}
.exact-out{font:600 13px var(--mono)}

/* module 5: the shop */
.shopviz{display:flex;flex-direction:column;gap:14px}
.shop{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px;align-items:start}
.shop .ticket{grid-row:1/3}
@media (max-width:620px){.shop{grid-template-columns:1fr}.shop .ticket{grid-row:auto}}
.ticket{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px;display:flex;flex-direction:column;gap:8px;position:relative;transition:transform .3s var(--e-out)}
.ticket .t{font:600 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink3)}
.ticket ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--ink2)}
.ticket li::before{content:"·";margin-right:6px;color:var(--ink3)}
.ticket.torn{border-color:var(--coral);border-style:dashed;background:var(--coral-soft);transform:rotate(-1.5deg)}
.ticket.torn .t{color:var(--coral-ink)}
.ticket.torn ul{text-decoration:line-through;color:var(--coral-ink)}
.stamps{display:grid;grid-template-columns:repeat(10,1fr);gap:4px}
.stamps span{aspect-ratio:1;display:grid;place-items:center;border-radius:6px;background:var(--bg2);color:var(--ink3);font:600 12px var(--mono)}
.stamps span.ok{background:var(--hum-soft);color:var(--hum-ink)}
.stamps span.brk{background:var(--coral);color:#fff}
.shop .now{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--ink2)}
.shop .now b{font:700 20px var(--mono);letter-spacing:-.02em;color:var(--ink)}
.shop .now b.brk{color:var(--coral-ink)}
.shop .now .bar{height:10px;border-radius:5px;background:var(--bg2);overflow:hidden}
.shop .now .bar i{display:block;height:100%;background:var(--hum);transition:width .35s var(--e-out)}
.shop .now .bar i.brk{background:var(--coral)}
.line svg{display:block;width:100%;height:auto;overflow:visible}

/* module 6 */
.scale{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 20px 12px;position:relative}
.scale .track{height:4px;border-radius:2px;background:linear-gradient(90deg,var(--hum),#F5B942 50%,var(--coral));position:relative;margin:28px 0 36px}
.scale .dot{position:absolute;top:50%;transform:translate(-50%,-50%);width:18px;height:18px;border-radius:50%;background:var(--ink);border:3px solid var(--card);box-shadow:0 0 0 1px var(--line2);transition:left .35s var(--e-out)}
.scale .dot b{position:absolute;left:50%;top:-30px;transform:translateX(-50%);font:600 12px var(--mono);white-space:nowrap;color:var(--ink)}
.scale .dot small{position:absolute;left:50%;top:22px;transform:translateX(-50%);font:500 11px var(--sans);white-space:nowrap;color:var(--ink3)}
.scale .dot.cheap{background:var(--hum)}
.scale .dot.dear{background:var(--coral)}
.scale .ends{display:flex;justify-content:space-between;font:500 11px var(--mono);color:var(--ink3);text-transform:uppercase;letter-spacing:.08em}
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
@media (max-width:560px){.cards3{grid-template-columns:1fr}}
.mcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px;display:flex;flex-direction:column;gap:8px}
.mcard h3{font-size:18px}
.mcard .tot{font:700 26px var(--mono);letter-spacing:-.02em}
.mcard dl{display:grid;grid-template-columns:auto 1fr;gap:2px 10px;margin:0;font-size:13px;color:var(--ink2)}
.mcard dd{margin:0;text-align:right;font:500 13px var(--mono);color:var(--ink)}
.mcard .meter{height:6px;border-radius:3px;background:var(--bg2);overflow:hidden}
.mcard .meter i{display:block;height:100%;background:var(--coral)}
.mcard.cheap .meter i{background:var(--hum)}

/* pick your AI: three big cards before module 1 */
.pcards{display:grid;grid-template-columns:1fr;gap:10px}
@media (min-width:620px){.pcards{grid-template-columns:repeat(3,1fr)}}
.pcard{display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;min-height:44px;transition:border-color .15s,box-shadow .15s}
.pcard:hover{border-color:var(--ink3)}
.pcard[aria-pressed=true]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.pcard b{font:600 26px var(--head);letter-spacing:-.03em}
.pcard span{font:500 12px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink3)}
.pcard small{margin-top:8px;font:13px/1.5 var(--mono);color:var(--ink2)}
.price-on select+select{margin-left:4px}

/* your sessions */
.paths{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.paths.one{grid-template-columns:1fr}
@media (max-width:620px){.paths{grid-template-columns:1fr}}
.path{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;gap:10px}
.path ol{margin:0;padding-left:20px;font-size:14px;color:var(--ink2);display:flex;flex-direction:column;gap:4px}
.dropzone{position:relative;display:grid;place-items:center;text-align:center;min-height:96px;border:1.5px dashed var(--line2);border-radius:10px;font:500 14px var(--sans);color:var(--ink2);background:var(--bg);cursor:pointer;padding:12px}
.dropzone.over{border-color:var(--coral);background:var(--coral-soft);color:var(--coral-ink)}
.dropzone.busy{pointer-events:none;opacity:.6}
#you-out{display:flex;flex-direction:column;gap:16px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px}
.stat b{display:block;font:700 22px var(--mono);letter-spacing:-.02em}
.stat span{font-size:13px;color:var(--ink2)}
.taxes{display:flex;flex-direction:column;gap:8px}
.tax{display:grid;grid-template-columns:1fr auto;gap:4px 12px;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.tax h3{font-size:16px}
.tax .v{font:700 16px var(--mono);text-align:right}
.tax p{grid-column:1/-1;font-size:14px;color:var(--ink2)}
.tax .bar{grid-column:1/-1;height:5px;background:var(--bg2);border-radius:3px;overflow:hidden}
.tax .bar i{display:block;height:100%;background:var(--coral)}
.tax.lead{border-color:var(--coral);box-shadow:0 0 0 1px var(--coral)}
.srcs{display:flex;flex-direction:column;gap:6px}
.src{background:var(--card);border:1px solid var(--line);border-radius:10px}
.src summary{display:grid;grid-template-columns:1fr auto;gap:6px 12px;align-items:baseline;padding:12px 14px;cursor:pointer;list-style:none}
.src summary::-webkit-details-marker{display:none}
.src summary::before{display:none}
.src .nm{font:600 16px var(--head);letter-spacing:-.02em}
.src .nm::before{content:"+";display:inline-block;width:16px;font:500 14px var(--mono);color:var(--ink3)}
.src[open] .nm::before{content:"−"}
.src[data-flat] .nm::before{visibility:hidden}
.src .v{font:700 16px var(--mono);text-align:right}
.src .v small{font:500 12px var(--mono);color:var(--ink3);margin-left:4px}
.src .bar{grid-column:1/-1;height:6px;background:var(--bg2);border-radius:3px;overflow:hidden}
.src .bar i{display:block;height:100%;background:var(--ink)}
.src p{padding:0 14px 10px 30px;font-size:14px;color:var(--ink2)}
.src ul{list-style:none;margin:0;padding:0 14px 12px 30px;display:flex;flex-direction:column}
.src li{display:grid;grid-template-columns:1fr auto 80px;gap:12px;padding:6px 0;border-top:1px solid var(--line);font-size:14px}
.src li span{overflow-wrap:anywhere}
.src li em{font:500 12px var(--mono);font-style:normal;color:var(--ink3);align-self:center}
.src li b{font:600 14px var(--mono);text-align:right}
.tbl{overflow-x:auto;background:var(--card);border:1px solid var(--line);border-radius:10px}
.tbl table{border-collapse:collapse;width:100%;font-size:13px}
.tbl th,.tbl td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.tbl th{font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--ink3)}
.tbl td.num{text-align:right;font-family:var(--mono)}
.tbl td.name{white-space:normal;min-width:180px}

.pager{display:flex;justify-content:space-between;gap:8px;padding:16px 0;position:sticky;bottom:0;background:linear-gradient(transparent,var(--bg) 35%);padding-bottom:calc(12px + env(safe-area-inset-bottom,0px))}
.pager .btn{flex:1}
.foot{display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--line);padding-top:14px}
.foot .tiny{font-size:11px;color:var(--ink3)}
.made{margin:0;font-size:12px;color:var(--ink3);text-align:center}
.made a{color:var(--ink2);text-decoration:underline;text-underline-offset:2px}

.keybox{display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--coral);border-radius:var(--r);padding:16px;margin-top:10px}
.keybox input[type=password]{padding:11px 12px;border:1px solid var(--line2);border-radius:8px;font:14px var(--mono);width:100%}
.keybox .keep{display:flex;gap:8px;align-items:center;font-size:14px;color:var(--ink2)}
.err-inline{font-size:13px;color:var(--coral-ink);min-height:0}
.err-inline:empty{display:none}

/* ---------- laptop and projector: two panes, bigger type ---------- */
@media (min-width:1000px){
  body{font-size:18px}
  .app{max-width:1260px;padding-left:max(28px,env(safe-area-inset-left,0px));padding-right:max(28px,env(safe-area-inset-right,0px))}
  .steps{margin:0;padding:2px 0 0;overflow:visible;flex-wrap:wrap;gap:4px 24px}
  .steps a{font-size:14px;padding:8px 0 10px}
  .mod{display:grid;grid-template-columns:380px minmax(0,1fr);gap:16px 36px;align-items:start;padding-top:16px}
  .mod.stage{display:flex;align-items:stretch;max-width:820px;margin:0 auto;width:100%}
  .stage[data-stage=setup] .head h1{font-size:44px}
  .stage .tstack{min-height:340px}
  .stage[data-stage=cost] .body,.stage[data-stage=total] .body{grid-template-columns:280px 1fr;gap:28px}
  .stage .sum{font-size:19px}
  .sum .n{font-size:56px}
  .mod.you{grid-template-columns:440px minmax(0,1fr)}
  .mod.start{display:flex;max-width:900px;margin:0 auto;width:100%;padding-top:48px}
  .start h1{font-size:44px}
  .pcard{padding:24px}
  .mod .l,.mod .r{gap:14px}
  .mod .r{position:sticky;top:8px}
  h1{font-size:40px}
  .sub{font-size:17px}
  .controls{padding:16px 18px}
  .ctl{font-size:15px}
  .ctl output{font-size:15px}
  .cap{font-size:14px}
  .headline{padding:22px 24px 20px}
  .headline .n{font-size:84px}
  .headline p{font-size:19px}
    .edit{height:320px}
  .edit .hl,.edit textarea{font-size:13px}
  .legend div{font-size:13px}
  .pager{justify-content:flex-end;position:static;background:none}
  .pager .btn{flex:0 0 auto;min-width:150px}
  .pager #prev{margin-right:auto}
  .foot .tiny{font-size:11px}
  .you .stats{grid-template-columns:repeat(4,1fr)}
}