:root{--paper:#f5f2e9;--ink:#26332e;--green:#173f35;--gold:#d7ba76;--muted:#67726a;--line:#dcded4}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;font-size:16px;line-height:1.65}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #b68d31;outline-offset:4px}button:disabled{cursor:default;opacity:.48}header{max-width:1264px;margin:auto;padding:24px 32px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:16px}.brand{color:var(--green);font-size:25px;font-weight:800;text-decoration:none;letter-spacing:.08em}.brand span{font-size:11px;display:block;letter-spacing:.24em}.textbtn{border:0;background:none;color:var(--green);font-size:14px;text-decoration:underline;text-underline-offset:5px}main{max-width:1264px;margin:auto;padding:32px}.heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px}.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--muted);margin:0 0 6px}h1{font-size:32px;font-weight:700;letter-spacing:.035em;line-height:1.35;margin:0}.intro{color:var(--muted);font-size:14px;margin:0}.steps{display:flex;gap:8px;margin-bottom:24px}.steps button{flex:1;border:1px solid var(--line);border-radius:8px;padding:12px 8px;background:transparent;color:var(--muted);font-size:14px;font-weight:600;white-space:nowrap}.steps button.active{background:var(--green);color:white;border-color:var(--green)}.steps button.done:not(.active){color:var(--green);border-color:#a7b9ab}.layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(300px,1fr);gap:24px;align-items:start}.playarea{background:var(--green);border-radius:24px;color:#fff;min-height:540px;padding:28px;position:relative;overflow:hidden;box-shadow:inset 0 0 0 8px #244b40}.tabletop{display:flex;justify-content:space-between;align-items:center;gap:16px;color:#c7d6cd;font-size:13px;letter-spacing:.06em;margin-bottom:28px}.badge{display:inline-block;border:1px solid #ffffff45;border-radius:30px;padding:3px 10px;font-size:12px}.tabletitle{text-align:center;font-size:21px;line-height:1.5;margin:40px 0 24px}.tablehint{text-align:center;color:#c4d8cc;font-size:14px}.cards{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.card{width:66px;height:94px;border:0;border-radius:7px;background:#fffef9;color:#27352e;box-shadow:0 3px 0 #0003;display:flex;flex-direction:column;justify-content:space-between;align-items:flex-start;padding:7px 10px;line-height:1;font-family:Georgia,serif;font-weight:bold;font-size:27px;position:relative;flex-shrink:0}.card .suit{align-self:flex-end;font-size:28px}.card.red{color:#b14037}.card.selectable{transition:transform .16s,box-shadow .16s}.card.selected{transform:translateY(-8px);box-shadow:0 0 0 3px var(--gold),0 8px 0 #0002}.card.selected:after{content:'✓';position:absolute;top:-10px;right:-9px;border-radius:50%;width:23px;height:23px;background:var(--gold);font:700 16px/23px sans-serif;color:var(--green)}.card.back{background:repeating-linear-gradient(45deg,#365f50,#365f50 5px,#426b5b 5px,#426b5b 6px);border:3px solid #e8ead7;color:transparent}.card.empty{background:#ffffff08;border:1px dashed #ffffff40;box-shadow:none;color:#ffffff40;align-items:center;justify-content:center;font:14px sans-serif}.card.small{width:40px;height:55px;padding:4px 6px;font-size:17px}.card.small .suit{font-size:18px}.cardrowlabel{text-align:center;font-size:12px;color:#bdd0c5;margin:22px 0 12px}.cardgroup{margin:32px 0}.selectioncount{text-align:center;color:var(--gold);font-size:14px;margin-top:24px}.coach{background:#fffef9;border:1px solid var(--line);border-radius:16px;padding:26px;min-height:400px}.coach .kicker{font-size:12px;letter-spacing:.12em;color:#687463;margin-bottom:12px}.coach h2{font-size:23px;line-height:1.55;margin:0 0 16px}.coach p{font-size:15px;color:#566359;margin:12px 0}.coach strong{color:var(--green)}.actions{display:grid;gap:9px;margin-top:22px}.btn{padding:13px 16px;border:1px solid #cdd6cd;border-radius:8px;background:#fffef9;color:var(--green);font-weight:700;text-align:center;min-height:48px}.btn.primary{background:var(--green);border-color:var(--green);color:white}.btn.gold{background:var(--gold);color:var(--green);border-color:var(--gold)}.btn:hover:not(:disabled){filter:brightness(.96)}.btn small{font-size:12px;font-weight:400;display:block}.feedback{border-left:3px solid var(--gold);padding:10px 12px;background:#f7f3e7;border-radius:0 7px 7px 0;margin-top:18px;font-size:14px;color:var(--green)}.feedback.success{border-color:#3d8864;background:#eef6ef}.minihelp{font-size:12px!important;color:#7a847b!important}.opponents{display:flex;justify-content:space-around;gap:20px;margin-bottom:20px}.seat{text-align:center;min-width:110px}.seat .name{font-weight:700;font-size:14px;margin-bottom:7px}.seat .balance{font-size:12px;color:#c7d6cd;margin-top:8px}.seat.folded{opacity:.45}.pot{text-align:center;margin:22px 0}.pot small{display:block;font-size:11px;letter-spacing:.2em;color:#bfcfc5}.pot b{font:500 34px/1.4 Georgia,serif;color:#eedba9}.street{display:flex;justify-content:center;gap:13px;color:#b4c8bb;font-size:11px;margin-bottom:16px}.street .current{color:var(--gold);border-bottom:2px solid var(--gold)}.self{margin-top:25px;text-align:center}.self .name{font-size:14px;font-weight:700;margin-bottom:9px}.self .balance{font-size:13px;color:#c7d6cd;margin-top:10px}.log{margin-top:22px;background:#ffffff0a;border-radius:8px;padding:11px 14px;font-size:12px;color:#c7d6cd;max-height:92px;overflow:auto}.log p{margin:3px 0}.math{display:flex;justify-content:center;gap:20px;align-items:center;margin:44px 0;color:#e5d298;font:36px Georgia,serif}.chipamount{text-align:center;border:1px solid #678679;border-radius:16px;padding:20px;min-width:100px}.chipamount small{display:block;color:#baccbf;font:12px sans-serif;margin-bottom:12px}.numberinput{width:100%;font:24px Georgia,serif;border:1px solid #bccbbb;border-radius:8px;padding:14px;background:#fff;color:var(--green)}.progressline{height:4px;background:#e5e8dd;border-radius:3px;margin:16px 0}.progressline div{height:100%;background:#638975;border-radius:3px}.rankexample{margin-top:20px;text-align:center;color:#e2cf9b;font-size:14px}.winner{font-size:30px;text-align:center;color:var(--gold);margin:30px 0 12px;font-weight:700}.glossary{margin-top:24px;background:#fffef9;border:1px solid var(--line);border-radius:16px;padding:28px;display:grid;grid-template-columns:1fr 1fr;gap:40px}.glossary[hidden]{display:none}.glossary h2{font-size:19px}.glossary p,.glossary dd{font-size:14px;color:#657266}.glossary dt{font-size:15px;font-weight:bold;margin-top:12px}.glossary dd{margin-left:0}.ranks{padding-left:24px}.ranks li{font-size:14px;margin:8px 0}.ranks small{display:block;color:#657266}footer{text-align:center;color:#7b8278;font-size:12px;margin:30px auto 12px}.pill{font-size:11px;padding:2px 6px;color:#183f34;background:#dfc993;border-radius:4px}.successmark{font-size:56px;text-align:center;color:var(--gold);margin:40px 0 10px}@media(max-width:850px){main{padding:24px 18px}.layout{grid-template-columns:1fr}.playarea{min-height:450px}.coach{min-height:0}.heading{align-items:flex-start}.intro{display:none}header{padding:18px}.steps{overflow:auto;padding-bottom:4px}.steps button{min-width:105px}.coach{padding:22px}.glossary{grid-template-columns:1fr;gap:20px}}@media(max-width:480px){h1{font-size:26px}.brand{font-size:22px}.textbtn{font-size:12px}.playarea{padding:22px 16px;border-radius:18px}.tabletop{margin-bottom:20px}.card{width:51px;height:74px;font-size:22px;padding:6px 7px}.card .suit{font-size:24px}.cards{gap:7px}.cardgroup{margin:25px 0}.opponents{gap:10px}.tabletitle{font-size:20px;margin:25px 0 22px}.coach h2{font-size:22px}.math{gap:10px;font-size:28px}.chipamount{padding:15px;min-width:80px}.steps button{font-size:12px;min-width:97px}.street{gap:9px;font-size:10px}.pot{margin:18px 0}.tablehint{font-size:13px}.layout{gap:16px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.scenariochoice{display:flex;gap:8px;margin-bottom:22px}.scenariochoice .btn{flex:1;font-size:13px;padding:10px 7px}.handsummary{background:#f5f6ef;border-radius:9px;padding:5px 13px;margin:15px 0}.handsummary p{font-size:13px;overflow-wrap:anywhere}.handsummary strong{font-size:14px}
.scenariochoice{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.scenariochoice .btn{font-size:14px;white-space:normal;overflow-wrap:anywhere;padding:10px 5px}
.formedhand{border:1px solid #d6dece;background:#eef2e8;border-radius:12px;padding:14px 10px;margin:20px 0}.formedhand h3,.nextlearning h3{font-size:16px;line-height:1.5;margin:0 0 14px}.formedhand .cards{gap:6px}.formedhand .card{width:42px;height:62px;padding:5px 6px;font-size:20px}.formedhand .card .suit{font-size:22px}.formedhand p{text-align:center;font-size:14px;margin-bottom:0}.nextlearning{border-top:1px solid var(--line);margin-top:24px;padding-top:20px;display:grid;gap:10px}.nextlearning p{margin:0 0 5px}.nextlearning a{display:block;text-decoration:none}.nextlearning .textbtn{text-align:center;text-decoration:underline;padding:10px}
/* Keep each completed five-card hand together at narrow widths. */
.formedhand .card{width:calc((100% - 24px)/5);max-width:42px;min-width:0;flex-shrink:1}.formedhand .cards{flex-wrap:nowrap}
button.card{touch-action:manipulation}.textbtn{min-height:44px;display:inline-flex;align-items:center;justify-content:center}

.site-links{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 24px;margin-top:32px}.site-links a{color:var(--green);font-size:14px;display:inline-flex;align-items:center;min-height:44px;text-underline-offset:4px}

.opening-steps{padding-left:24px;margin:28px 0}.opening-steps li{margin:18px 0;padding-left:5px}.opening-steps strong,.opening-steps span{display:block}.opening-steps span{font-size:14px;color:#d7e3dc;margin-top:5px}.hint-box,.context-note{margin-top:18px;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:14px}.hint-box p{margin:10px 0 0}.context-note{background:#eef2e8}.scenariochoice{grid-template-columns:repeat(2,minmax(0,1fr))}.street{display:flex;flex-wrap:wrap;gap:8px;font-size:12px}.street span{white-space:nowrap}.playarea .log{font-size:14px}@media(max-width:850px){.playarea{min-height:0}.opening-steps{margin:12px 0}.opening-steps li{margin:12px 0}.coach{padding:20px}.street{font-size:12px}}