@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Manrope:wght@400;500;600;650;700;750;800&display=swap');

:root{color-scheme:dark;--bg:#101e1c;--surface:#172a26;--table:#1c3c33;--line:#ffffff21;--text:#edf2e9;--muted:#a9bdb4;--gold:#e9c47e;--ink:#1d322c;--paper:#f1f3eb;--paper-muted:#52665c;--red:#b83b45;--radius:18px;font-family:'DM Sans',system-ui,sans-serif;font-size:16px}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button,input,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit}button:disabled{cursor:not-allowed;opacity:.4}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #c3953f;outline-offset:4px}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:Manrope,system-ui,sans-serif}h1{font-size:clamp(1.9rem,3.1vw,2.8rem);font-weight:650;letter-spacing:-.055em;line-height:1.15;margin-bottom:12px}h2{font-size:1.4rem;letter-spacing:-.035em;line-height:1.3}h3{font-size:1.06rem;line-height:1.4}p{line-height:1.6}button{border:0}input,select{min-height:44px;max-width:100%;border-radius:8px;border:1px solid #b9c6bc;padding:9px 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#e9c47e77;border-radius:4px;padding:3px 5px;align-self:center}nav{display:flex;gap:8px}nav a{font-size:.94rem;text-decoration:none;padding:11px 19px;color:var(--muted);border-radius:8px}nav a:hover{color:white;background:#ffffff08}nav a[aria-current=page]{background:#ffffff0e;color:var(--text)}.header-note{font-size:.75rem;letter-spacing:.15em;color:var(--muted)}main{max-width:1344px;margin:auto;padding:42px 36px 20px;min-height:calc(100vh - 190px)}.intro{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:27px}.eyebrow{text-transform:uppercase;color:var(--gold);font-size:.75rem;font-weight:650;letter-spacing:.17em;margin-bottom:12px}.intro p{color:var(--muted);margin:0;max-width:620px}.intro-side{color:var(--muted);font-size:.875rem;white-space:nowrap;display:flex;align-items:center;gap:8px}.status-dot{height:6px;width:6px;display:inline-block;background:var(--gold);border-radius:50%}.workspace{display:grid;grid-template-columns:minmax(0,1.37fr) minmax(330px,1fr);gap:20px;align-items:start}.table-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.table-topline{padding:20px 25px;display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:.875rem;border-bottom:1px solid var(--line)}.table-topline strong{font-weight:550}.pill{font-size:.75rem;border-radius:5px;padding:5px 8px;border:1px solid #ffffff27;color:var(--muted);white-space:nowrap}.table-felt{padding:22px 28px 24px;min-height:330px;position:relative;background:radial-gradient(ellipse at center,#295041 0%,#1c3b32 75%)}.table-felt:before{content:'';position:absolute;inset:17px;border:1px solid #b2d5aa14;border-radius:80px;pointer-events:none}.opponent{text-align:center;position:relative;font-size:.875rem;color:#d0dfd4}.opponent .seat{display:inline-flex;align-items:center;gap:8px}.seat-dot{width:27px;height:27px;display:inline-grid;place-items:center;border:1px solid #afcbb275;border-radius:50%;font-size:.75rem;background:#203a30}.bet-badge{display:table;background:#e6c583;color:#26362a;border-radius:20px;padding:5px 14px;font-size:.8125rem;font-weight:650;margin:10px auto 0;box-shadow:0 3px 0 #0002}.board-label{font-size:.69rem;letter-spacing:.15em;color:#b4c9bc;text-transform:uppercase;text-align:center;margin:21px 0 10px}.cards{display:flex;justify-content:center;gap:9px;position:relative}.card{width:65px;height:87px;flex-shrink:0;display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between;padding:7px 9px;border-radius:7px;background:#fafbf4;color:#1e3530;box-shadow:0 3px 0 #0003;font-family:Manrope,system-ui,sans-serif;font-size:1.6rem;line-height:1;font-weight:750;border:1px solid #e0e6d7;text-decoration:none}.card 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strong{color:#edf2e9;font-size:.94rem;font-weight:550}.table-context{padding:22px 25px}.table-context p{font-size:.9375rem;color:#ccdad0;margin-bottom:15px}.table-context p:last-child{margin-bottom:0}.money-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);padding-top:17px;gap:12px}.money-strip span{display:block;color:var(--muted);font-size:.75rem;margin-bottom:5px}.money-strip strong{font-size:1.13rem;font-weight:550;font-variant-numeric:tabular-nums}.paper{background:var(--paper);color:var(--ink);border-radius:var(--radius);padding:27px;color-scheme:light}.paper .eyebrow{color:#576e58}.paper p{color:var(--paper-muted);font-size:.9375rem}.paper h2{margin-bottom:13px}.question{margin-bottom:20px}.answer-row{display:flex;align-items:stretch;gap:10px}.answer-input-wrap{position:relative;flex:1}.answer-input-wrap 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caption{text-align:left;font-size:.8125rem;color:var(--paper-muted);margin-bottom:8px}footer{max-width:1344px;margin:15px auto 0;padding:26px 36px 30px;display:flex;justify-content:space-between;gap:20px;font-size:.75rem;line-height:1.6;color:#8da799}dialog{width:min(740px,calc(100% - 28px));background:var(--paper);color:var(--ink);border:1px solid #819b86;border-radius:18px;padding:25px;color-scheme:light}dialog::backdrop{background:#071914c9;backdrop-filter:blur(4px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}.dialog-heading h2{margin:0}.icon-button{width:44px;height:44px;background:transparent;color:var(--ink);font-size:1.8rem;border-radius:6px}.icon-button:hover{background:#dce5d8}dialog p{font-size:.875rem;color:var(--paper-muted);margin-top:6px}.card-picker{display:grid;grid-template-columns:repeat(13,1fr);gap:6px}.card-picker .card{width:100%;height:62px;font-size:1.15rem;padding:5px;min-width:0}.card-picker .card .suit{font-size:1.2rem}.card-picker .card:disabled{opacity:.16}.card-picker .card.selected{outline:2px solid #b89551}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}@keyframes reveal{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1400px){main{padding-top:48px}.table-felt{min-height:355px;padding-top:28px}.board-label{margin-top:25px}}
@media(max-width:1050px){.header-note{display:none}.site-header{padding:18px 30px}.workspace{grid-template-columns:minmax(0,1.1fr) minmax(310px,1fr)}.paper{padding:22px}.table-felt{padding-left:18px;padding-right:18px}.card{width:56px;height:78px;font-size:1.4rem}.cards{gap:7px}.table-context{padding:20px}.intro-side{display:none}.guide-layout{grid-template-columns:175px minmax(0,1fr);gap:20px}}
@media(max-width:760px){.site-header{padding:16px 20px;min-height:85px;gap:15px;flex-wrap:wrap}.brand{font-size:1.4rem}nav{gap:2px}nav a{font-size:.875rem;padding:10px 12px}main{padding:28px 20px 15px}.intro{margin-bottom:22px}.intro p{font-size:.94rem}.workspace{grid-template-columns:1fr;gap:16px}.table-felt{min-height:320px}.card{width:61px;height:83px}.lesson-grid{grid-template-columns:repeat(2,1fr)}.lesson-bar{margin-top:25px}.paper{padding:24px}.guide-layout{grid-template-columns:1fr}.guide-nav{position:static;display:flex;flex-direction:row;overflow-x:auto;padding-bottom:10px;gap:8px}.guide-nav a{white-space:nowrap;border:1px solid #45624f;border-radius:20px;padding:8px 12px;font-size:.8125rem}.guide-article{padding:24px}.intro h1{font-size:2rem}.card-picker{grid-template-columns:repeat(7,1fr)}.card-picker .card{height:65px}.sandbox .paper{margin-top:0}footer{padding:24px 20px;flex-direction:column;gap:5px}}
@media(max-width:420px){.site-header{justify-content:center;gap:5px}.brand{font-size:1.35rem}.brand-suit{font-size:1.8rem}nav{width:100%;justify-content:center}main{padding:24px 14px}.table-topline{padding:16px}.table-context{padding:18px}.table-felt{padding:20px 10px}.cards{gap:5px}.card{width:49px;height:71px;padding:6px;font-size:1.3rem}.card .suit{font-size:1.5rem}.paper{padding:20px}.answer-row{flex-wrap:wrap}.answer-input-wrap{min-width:110px}.control-grid{gap:12px}.sandbox-controls{padding:19px}.metric strong{font-size:1.85rem}.lesson-button{padding:13px}.lesson-bar{gap:10px}.lesson-bar span{font-size:.75rem}}
.intro h1{font-size:clamp(1.7rem,2.6vw,2.2rem);letter-spacing:-.035em}.table-felt{background:#203e33}.table-felt:before{display:none}.bet-badge{box-shadow:none}.hand-terms{border-top:1px solid var(--line);margin-bottom:17px;padding:12px 0}.hand-terms summary{color:var(--muted);font-size:.875rem;font-weight:500}.hand-terms dl{margin:14px 0 0;font-size:.875rem;line-height:1.6}.hand-terms dt{font-weight:600;color:var(--text);margin-top:12px}.hand-terms dd{margin:3px 0 0;color:var(--muted)}
.practice-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:0 0 20px;flex-wrap:wrap}.practice-modes{display:flex;gap:4px;border:1px solid var(--line);border-radius:10px;padding:4px}.practice-modes button{padding:10px 14px;min-height:44px;border-radius:6px;background:transparent;color:var(--muted);font-size:.875rem}.practice-modes button[aria-pressed=true]{background:#d6ba7b;color:#1d322c;font-weight:600}.practice-toolbar>.mini-note{color:var(--muted)}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.guide-article h3{margin:26px 0 9px;font-size:1rem;letter-spacing:-.01em}
.guide-article h3:first-of-type{margin-top:22px}
.guide-layout>div{min-width:0}
.diagram-scroll{overflow-x:auto;max-width:100%;margin:18px 0;-webkit-overflow-scrolling:touch}
.diagram{display:block;width:100%;min-width:560px;height:auto;background:#e8eee1;border:1px solid #cdd9c7;border-radius:9px;padding:14px 10px}
.implied-lab{border:1px solid #cdd9c7;background:#e8eee1;border-radius:9px;padding:18px;margin:16px 0}
.implied-lab label{display:flex;align-items:baseline;justify-content:space-between;gap:12px;color:var(--ink)}
.implied-lab output{font-family:Manrope,sans-serif;font-size:1.3rem;font-weight:700;font-variant-numeric:tabular-nums}
.implied-lab input[type=range]{margin-top:12px}
.implied-readout{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.implied-readout .metric{border-bottom:0;padding-bottom:0}
.implied-readout .metric strong{font-size:1.7rem}
.implied-scale{margin-top:16px}
.implied-scale-track{position:relative;height:9px;border-radius:8px;background:linear-gradient(to right,#d8b9b2 0%,#d8b9b2 35%,#cdd0b6 35%,#cdd0b6 35.6%,#a9c9ae 35.6%,#8fbf9c 100%)}
.implied-scale-track i{position:absolute;top:50%;width:15px;height:15px;margin:-7.5px 0 0 -7.5px;border-radius:50%;background:var(--ink);border:2.5px solid #e8eee1;transition:left .1s}
.implied-scale .bar-caption{margin:9px 0 0}