/* Paid Signal design system (direction A, "Ledger"): light ground, near-black ink, one green for money PayPal confirms.
   One family (Inter Tight), tabular numbers, few words. Every page links this file first, then keeps only its own layout. */
:root{
  --bg:#F7F7F5;--card:#FFFFFF;--ink:#111111;--ink2:#3A3A3A;--mute:#5E5E5E;--faint:#70706C;
  --line:#E6E6E3;--line2:#F0F0EE;--soft:#F1F1EE;
  --paid:#0F8A4B;--paid-ink:#0B6E3B;--paid-bg:#E7F6EE;--go:#2BD47D;--go-ink:#0B1F14;
  --bad:#B4232A;--bad-bg:#FBECEC;--warn:#8A4B00;--warn-bg:#FFF4E0;--link:#111111;
  --r-sm:10px;--r:16px;--r-lg:20px;--r-xl:24px;
  --sans:"Inter Tight",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --w:1120px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 15px/1.5 var(--sans);font-variant-numeric:tabular-nums;overflow-x:hidden}
img,svg{max-width:100%}
a{color:var(--link);text-underline-offset:3px}a:hover{color:var(--paid)}
code,.mono{font-family:var(--mono);font-size:.86em;overflow-wrap:anywhere}
h1,h2,h3{margin:0;letter-spacing:-.02em;line-height:1.1}
h1{font-size:clamp(36px,6vw,64px);font-weight:700;letter-spacing:-.035em;line-height:1.02}
h2{font-size:clamp(24px,3vw,32px);font-weight:700}
h3{font-size:18px;font-weight:700;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:3px solid var(--paid);outline-offset:2px}

/* top bar */
.ps-top{background:var(--card);border-bottom:1px solid var(--line)}
.ps-top nav{max-width:var(--w);margin:0 auto;padding:14px 24px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px}
.ps-brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;font-size:17px;color:var(--ink)}
.ps-mark{width:22px;height:22px;border-radius:7px;background:var(--ink);display:inline-grid;place-items:center}
.ps-mark i{width:8px;height:8px;border-radius:50%;background:var(--go)}
.ps-links{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:14px;flex:1 1 auto}
.ps-links a{text-decoration:none;color:var(--mute)}.ps-links a:hover,.ps-links a[aria-current]{color:var(--ink)}
.ps-links a[aria-current]{font-weight:600}
.ps-live{font-size:12px;color:var(--paid-ink);background:var(--paid-bg);border-radius:99px;padding:5px 10px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.ps-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--paid)}

/* layout */
.ps-main{max-width:var(--w);margin:0 auto;padding:64px 24px 48px;display:flex;flex-direction:column;gap:64px}
.ps-hero{display:flex;flex-direction:column;gap:16px;max-width:760px}
.ps-lead{font-size:clamp(17px,2vw,20px);line-height:1.4;color:var(--ink2);max-width:46ch}
.ps-eyebrow{font-size:13px;color:var(--mute)}
.ps-sec{display:flex;flex-direction:column;gap:20px}
.ps-sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:8px 16px}
.ps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:14px}
.ps-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.ps-foot{max-width:var(--w);margin:0 auto;padding:24px;font-size:12px;color:var(--mute);border-top:1px solid var(--line)}

/* surfaces */
.ps-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;min-width:0}
.ps-card.dark{background:var(--ink);border-color:var(--ink);color:#fff}
.ps-card.dark .ps-note,.ps-card.dark .ps-k{color:#CFCFCB}
.ps-tag{font-size:12px;font-weight:600;color:var(--mute)}
.ps-tag.paid{color:var(--paid)}.ps-tag.bad{color:var(--bad)}.ps-card.dark .ps-tag{color:var(--go)}
.ps-big{font-size:clamp(36px,5vw,48px);font-weight:700;letter-spacing:-.03em;line-height:1}
.ps-big .was{color:var(--faint)}
.ps-note{font-size:13px;color:var(--mute)}
.ps-k{font-size:12px;color:var(--mute)}
.ps-chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;border-radius:99px;padding:4px 10px;background:var(--soft);color:var(--ink2);white-space:nowrap}
.ps-chip.paid{background:var(--paid-bg);color:var(--paid-ink)}.ps-chip.bad{background:var(--bad-bg);color:var(--bad)}.ps-chip.warn{background:var(--warn-bg);color:var(--warn)}

/* list rows: label on the left, value on the right */
.ps-list{display:flex;flex-direction:column}
.ps-li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 14px;align-items:center;padding:14px 0;border-top:1px solid var(--line2)}
.ps-li:first-child{border-top:0}
.ps-li b{font-size:18px;white-space:nowrap}.ps-li .up{color:var(--paid)}.ps-li .down{color:var(--bad)}

/* buttons */
.ps-btn,button.ps-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:12px;font:600 15px/1 var(--sans);text-decoration:none;cursor:pointer;border:1px solid #D6D6D2;background:var(--card);color:var(--ink)}
.ps-btn.primary{background:var(--ink);border-color:var(--ink);color:#fff}
.ps-btn.go{background:var(--go);border-color:var(--go);color:var(--go-ink)}
.ps-btn.text{border-color:transparent;background:transparent;padding:0 6px}
.ps-btn:hover{filter:brightness(.96)}.ps-btn:disabled{opacity:.5;cursor:default}
a.ps-more{font-weight:600;text-decoration:none}a.ps-more::after{content:" →"}

/* fields */
.ps-input,textarea.ps-input{width:100%;font:400 15px/1.45 var(--sans);color:var(--ink);background:var(--card);border:1px solid #D6D6D2;border-radius:12px;padding:12px 14px}
textarea.ps-input{min-height:96px;resize:vertical}

/* steps */
.ps-steps{display:flex;flex-direction:column}
.ps-step{display:flex;gap:14px;align-items:center;padding:12px 0;border-top:1px solid var(--line)}
.ps-step:first-child{border-top:0}
.ps-step i{flex:0 0 28px;height:28px;border-radius:50%;display:grid;place-items:center;font:700 13px var(--sans);font-style:normal;background:#EDEDEA;color:var(--mute)}
.ps-step.done i{background:var(--ink);color:#fff}.ps-step.now i{background:var(--go);color:var(--go-ink)}.ps-step.now{font-weight:700}

/* tables in a scroll box */
.ps-table{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
.ps-table table{width:100%;border-collapse:collapse;font-size:14px}
.ps-table th{text-align:left;font-size:12px;font-weight:600;color:var(--mute);padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.ps-table td{padding:12px 14px;border-top:1px solid var(--line2);vertical-align:top}
.ps-table td.n,.ps-table th.n{text-align:right}

/* folded detail: method notes live here, not in the main read */
details.ps-more-box{border-top:1px solid var(--line);padding-top:12px}
details.ps-more-box summary{cursor:pointer;font-weight:600;font-size:14px;list-style:none}
details.ps-more-box summary::after{content:" +";color:var(--mute)}
details.ps-more-box[open] summary::after{content:" −"}

@media (max-width:640px){
  .ps-top nav{padding:12px 16px}.ps-live{display:none}
  .ps-main{padding:40px 16px 32px;gap:48px}
  .ps-card{padding:18px}
  .ps-foot{padding:20px 16px}
}

/* Static page layouts */

.ps-main{min-height:65vh}.foot-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:12px}.ps-more-box p,.ps-more-box li{max-width:80ch}.ps-more-box ul{padding-left:20px}.ps-table{max-width:100%}
/* Page layouts */
.intro,.ps-hero{max-width:760px;display:flex;flex-direction:column;gap:14px}.lede{font-size:clamp(17px,2vw,20px);line-height:1.4;color:var(--ink2);max-width:60ch}.sub,.note{font-size:13px;color:var(--mute)}.card,.stat,.move,.gap-card,.side,.receipt,.loop,.product,.pay{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;min-width:0;box-shadow:none}.card h2{font-size:22px}.moves,.grid,.gap-grid,.wins,.more{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:14px}.move{display:flex;flex-direction:column;gap:14px;min-height:220px}.move.dark{background:var(--ink);color:#fff}.move b{font-size:22px}.move .go-btn,.move .ghost-btn{margin-top:auto;display:inline-flex;align-items:center;min-height:44px;text-decoration:none;font-weight:600}.move .go-btn{background:var(--go);color:var(--go-ink);padding:0 16px;border-radius:10px;align-self:start}.move .ghost-btn{color:var(--ink)}.move.dark .go-btn{color:var(--go-ink)}.k,.tag{font-size:12px;font-weight:600;color:var(--mute)}.move.dark .k{color:var(--go)}.big,.nums{font-size:clamp(36px,5vw,48px);font-weight:700;letter-spacing:-.03em;line-height:1.05}.paid,.green,.go{color:var(--paid)}.claimed{color:var(--faint)}.jump-list{color:var(--mute)}.step,.gap{display:flex;flex-direction:column;gap:16px}.step h2 em,.n{font-style:normal;color:var(--mute)}.try{display:flex;flex-direction:column;gap:14px}.try-examples,.row,.picker,.contrast{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.try button,.picker button,.btn,.alt{min-height:44px;padding:8px 14px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:600 14px var(--sans);cursor:pointer}.btn.primary,.primary{background:var(--ink);color:#fff}.try textarea{width:100%;min-height:96px;padding:12px;border:1px solid var(--line);border-radius:12px;font:15px/1.5 var(--sans)}.try-result,.gap-card,.replay,.side{min-width:0}.gap-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}.gap-card{display:flex;flex-direction:column;gap:12px}.gap-bar{display:grid;grid-template-columns:70px minmax(30px,1fr) 52px;gap:8px;align-items:center;font-size:12px}.gap-bar div{background:var(--soft);height:8px}.gap-bar i{display:block;height:100%;background:#aaa}.gap-bar.money i{background:var(--paid)}.gap-bar span:last-child{text-align:right}.replay{border:1px solid var(--line);border-radius:var(--r-lg);padding:22px}.replay-h{font-size:20px}.gap-more,details.ps-more-box{border-top:1px solid var(--line);padding-top:12px}.gap-more summary,details.ps-more-box summary{cursor:pointer;font-weight:600;min-height:32px}.replay-p,.gap-src{margin:12px 0;color:var(--ink2)}.wins a,.more a{display:flex;flex-direction:column;gap:9px;padding:18px;border:1px solid var(--line);border-radius:var(--r);text-decoration:none;background:var(--card);color:var(--ink)}.wins small,.more span{color:var(--mute)}.vs{display:flex;align-items:center;gap:20px}.vs>div{display:grid;gap:5px}.vs b{font-size:36px}.contrast .side{flex:1}.contrast b{display:block;font-size:25px}.stat b{font-size:36px;display:block}.stat span,.stat small{display:block;color:var(--mute);margin-top:6px}.live{font-size:12px;color:var(--paid)}.scroll,.tbl{overflow-x:auto;max-width:100%;border:1px solid var(--line);border-radius:var(--r);background:#fff}.scroll table,.tbl table{border-collapse:collapse;min-width:760px;width:100%;font-size:13px}.scroll th,.scroll td,.tbl th,.tbl td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}.scroll th,.tbl th{color:var(--mute);font-size:12px}.details-row{display:grid;gap:8px}.foot{font-size:12px;color:var(--mute)}
.scenario-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.scenario{display:grid;grid-template-columns:32px minmax(0,1fr) auto;gap:14px;padding:20px;border:1px solid var(--line);border-radius:var(--r);background:#fff}.scenario h2{font-size:20px}.scenario .ev{font-size:12px;color:var(--mute);overflow-wrap:anywhere;margin-top:5px}.scenario .does{grid-column:2;color:var(--ink2)}.scenario .ps-chip{grid-column:3;grid-row:1/span 2}.connect-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:14px}.shop-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,380px);gap:32px;align-items:start}.shop-total{display:flex;justify-content:space-between;align-items:center}.shop-total b{font-size:36px}.shop-points{padding-left:20px}.shop-points li{padding:5px 0}.shop-rows{display:grid;gap:10px}.shop-rows>div{display:grid;grid-template-columns:1fr minmax(0,1fr);gap:12px;border-top:1px solid var(--line);padding-top:12px}.shop-rows b{text-align:right;overflow-wrap:anywhere}.receipt h1{font-size:48px}
@media(max-width:640px){.scenario{grid-template-columns:26px minmax(0,1fr)}.scenario .ps-chip{grid-column:2;grid-row:auto;justify-self:start}.scenario .does{grid-column:2}.shop-layout{grid-template-columns:1fr}.ps-live{margin-left:auto}.foot-links{gap:10px 14px}.moves,.grid,.gap-grid,.wins,.more{grid-template-columns:1fr}.vs{align-items:flex-start}.ps-table{max-width:100%}}

.ps-links a{display:inline-flex;align-items:center;min-height:44px}
.ps-foot a{display:inline-flex;align-items:center;min-height:44px}
details.ps-more-box summary,.gap-more summary{min-height:44px;display:flex;align-items:center}
pre{max-width:100%;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere}

.trail{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.trail .step{display:grid;grid-template-columns:44px minmax(0,1fr);gap:12px;align-items:start}
.trail .dot{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--soft);font-weight:700}
.trail .card{margin:0}
.trail .who{font-size:12px;color:var(--mute)}
.trail dl{display:grid;grid-template-columns:minmax(120px,170px) minmax(0,1fr);gap:8px 12px;margin:12px 0}
.trail dt{font-size:13px;color:var(--mute)}
.trail dd{margin:0;min-width:0;overflow-wrap:anywhere}
.gap:not(section){display:inline-flex;flex-direction:row;align-items:center;padding:4px 9px;border-radius:99px;background:var(--soft);font-size:12px}
.gap.blue{background:#E7EEFC;color:#1D4F91}
.gap.bad{background:var(--bad-bg);color:var(--bad)}
.gap.grey{color:var(--mute)}
.picker{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding:2px 0 8px}
.picker button{flex:0 0 auto}
.picker button[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
@media(max-width:640px){.trail .step{grid-template-columns:34px minmax(0,1fr);gap:10px}.trail .dot{width:34px;height:34px}.trail dl{grid-template-columns:1fr;gap:2px}.trail dt{margin-top:6px}}


/* ===== A2 components (shared with the judge path): cards of rows, one button system, details folds ===== */
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:24px;min-width:0;box-shadow:none}
.card.dark{background:var(--ink);border-color:var(--ink);color:#fff}
.k{font-size:12px;font-weight:600;color:var(--mute)}
.big{font-size:44px;font-weight:700;letter-spacing:-.03em;line-height:1;white-space:nowrap}
.was{color:var(--faint)}.up{color:var(--paid)}.down{color:var(--bad)}
.sec{display:flex;flex-direction:column;gap:20px;scroll-margin-top:24px}
.hd{display:flex;align-items:center;gap:14px}.hd h2{font-size:clamp(24px,3vw,32px)}
.no{flex:0 0 36px;height:36px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:700;font-size:15px}
.sub{font-size:16px;color:var(--ink2);margin-top:-8px}
.btn{font:600 15px var(--sans);height:44px;min-height:44px;padding:0 18px;border-radius:12px;border:0;background:var(--ink);color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{color:#fff;filter:brightness(1.15)}.btn:disabled{opacity:.45;cursor:default}
.btn.go{background:var(--go);color:var(--go-ink)}.btn.go:hover{color:var(--go-ink);filter:brightness(.96)}
.btn.sec2{background:var(--card);color:var(--ink);border:1px solid #D6D6D2}.btn.sec2:hover{color:var(--ink);filter:none;background:var(--soft)}
.btn.sm{height:36px;min-height:36px;font-size:13px;padding:0 14px;border-radius:10px}
.chip{display:inline-flex;align-items:center;font-size:12px;font-weight:600;border-radius:99px;padding:5px 10px;white-space:nowrap}
.chip.ok{background:var(--paid-bg);color:var(--paid-ink)}.chip.no2{background:var(--bad-bg);color:var(--bad)}.chip.held{background:var(--warn-bg);color:var(--warn)}.chip.neu{background:var(--soft);color:var(--ink2)}
.rows{display:flex;flex-direction:column}
.row{display:grid;grid-template-columns:170px minmax(0,1fr) auto;gap:8px 16px;align-items:center;padding:14px 0;border-top:1px solid var(--line2)}
.row.first,.rows>.row:first-child{border-top:0}
.row .l{font-size:13px;color:var(--mute)}.row .v{font-size:15px;overflow-wrap:anywhere}.row>b,.row .num{font-size:18px;font-weight:700;white-space:nowrap;text-align:right}
.foot{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--line2);font-size:inherit;color:inherit}
details.det{border-top:1px solid var(--line2);padding-top:14px;margin-top:2px}
details.det>summary,details.det-card>summary{cursor:pointer;list-style:none;font-weight:600;font-size:14px;display:flex;justify-content:space-between;align-items:center;gap:12px}
details.det>summary::-webkit-details-marker,details.det-card>summary::-webkit-details-marker{display:none}
details.det>summary::after,details.det-card>summary::after{content:"+";font-weight:400;font-size:20px;color:var(--mute)}
details[open].det>summary::after,details[open].det-card>summary::after{content:"−"}
details.det p,details.det-card p,details.det li,details.det-card li{font-size:14px;color:var(--ink2);margin-top:10px;overflow-wrap:anywhere;max-width:86ch}
details.det ul,details.det-card ul{margin:6px 0 0;padding-left:18px}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.stat2{display:flex;flex-direction:column;gap:8px}.stat2 small{font-size:14px;color:var(--mute)}
.intro{display:flex;flex-direction:column;gap:14px;max-width:760px}
.pg{gap:72px}
@media(max-width:900px){.grid3,.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.grid2,.grid3,.grid4{grid-template-columns:1fr}.row{grid-template-columns:minmax(0,1fr) auto;gap:4px 12px}.row .l{grid-column:1/-1}.card{padding:18px}.pg{gap:56px}.big{font-size:36px}}