:root{--reading-size:100%;--tile-unit:16px;--ink:#183c30;--green:#164d39;--muted:#485d50;--paper:#f5f4ed;--line:#cbd2c2;--gold:#946a21;--white:#fffef9;font-size:var(--reading-size)}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,"Yu Gothic UI","Meiryo",sans-serif;font-size:1rem;line-height:1.85;font-weight:500;overflow-wrap:anywhere}button,select,input{font:inherit}button,a,select,input{touch-action:manipulation}a{color:inherit;text-underline-offset:.2em}button{cursor:pointer}button:disabled{cursor:default;opacity:.7}[hidden]{display:none!important}:focus-visible{outline:4px solid #cf9125;outline-offset:5px}
.site-header{border-bottom:1px solid var(--line);background:#fbfaf5}.header-inner{max-width:1320px;margin:auto;padding:22px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px}.brand{display:flex;gap:14px;align-items:center;text-decoration:none;font-size:1.55rem;font-weight:700;letter-spacing:.07em;line-height:1.35}.brand-mark{background:var(--green);color:white;padding:10px 14px;border-radius:6px;box-shadow:0 4px 0 #a9b7a6}.brand small{display:block;font-size:.8rem;margin-top:6px;color:var(--muted);letter-spacing:0}.header-right{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:.85rem}.header-right a{margin-left:16px;font-weight:700}.offline-dot{width:9px;height:9px;border-radius:50%;background:#466d3b}
main{max-width:1320px;padding:0 32px;margin:auto}.intro{padding:38px 0 28px;display:flex;justify-content:space-between;gap:28px;align-items:center}.eyebrow{font-size:.85rem;color:var(--muted);margin:0 0 10px;font-weight:600}h1{font-size:2rem;line-height:1.55;margin:0 0 14px;font-weight:700}h1 span{color:var(--green)}.lead{color:var(--muted);margin:0;font-size:1rem}.intro-number{padding:0 25px 0 35px;border-left:1px solid var(--line);display:grid;text-align:center;line-height:1.25}.intro-number strong{font-size:3.2rem;font-weight:700}.intro-number span{font-size:.85rem;margin-top:10px;white-space:nowrap}
.toolbar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:end;gap:20px 28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0;font-size:.95rem}.toolbar>label{display:flex;flex-direction:column;gap:8px;min-width:0}.toolbar select{background:var(--white);color:var(--ink);border:2px solid #9eaf96;padding:10px 30px 10px 12px;border-radius:6px;font-size:.95rem;min-height:52px;width:100%;max-width:100%}.audio-options{display:flex;flex-wrap:wrap;gap:26px;align-self:center;padding-top:24px}.audio-options label{display:flex;gap:9px;align-items:center;min-height:44px;cursor:pointer}input[type=checkbox]{accent-color:var(--green);width:24px;height:24px;flex-shrink:0}
.practice-head{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center;font-size:.9rem;padding:24px 0 14px}.practice-head p{margin:0}.practice-head span{font-size:.9rem;color:var(--muted)}.practice{background:var(--white);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 5px 20px #263c2b07}.steps{display:flex;align-items:center;padding:20px 32px;border-bottom:1px solid var(--line);gap:18px;font-size:1rem;color:#4c6051}.steps span{display:flex;align-items:center;gap:10px;white-space:nowrap}.steps b{font-size:.85rem;border:1px solid #a3b09b;border-radius:50%;min-width:36px;height:36px;text-align:center;line-height:34px}.steps i{height:1px;background:var(--line);flex:1}.steps .active{color:var(--green);font-weight:700}.steps .active b{background:var(--green);border-color:var(--green);color:white}
.welcome{text-align:center;padding:38px 24px}.welcome h2{font-size:1.55rem;margin:28px 0 14px}.welcome p{color:var(--muted);margin:0 0 28px;font-size:1rem}.welcome small{display:block;font-size:.85rem;margin-top:18px;color:var(--muted)}.button{display:inline-flex;justify-content:center;align-items:center;gap:30px;border:2px solid transparent;padding:14px 26px;border-radius:7px;font-size:1.05rem;font-weight:700;line-height:1.6;min-height:58px;transition:background .15s}.primary{background:var(--green);color:white}.primary:hover{background:#24634f}.secondary{background:#e6ecd9;color:var(--green);border-color:#bac7aa}.secondary:hover{background:#dce6cd}
.demo-tiles{justify-content:center}.tile-row{display:flex;gap:6px;align-items:flex-start;flex-shrink:0}.tile-unit{display:inline-flex;flex-direction:column;align-items:center;flex-shrink:0;width:calc(3.1 * var(--tile-unit))}.tile{width:calc(3.1 * var(--tile-unit));height:calc(4.3 * var(--tile-unit));position:relative;display:inline-flex;background:linear-gradient(115deg,#fffefb,#f4f1e2);border:2px solid #c2c3ae;border-radius:6px;box-shadow:0 5px 0 #a3b997,0 7px 2px #112d242e;align-items:center;justify-content:center;flex-shrink:0;vertical-align:middle}.tile svg{width:calc(2.55 * var(--tile-unit));height:calc(3.7 * var(--tile-unit))}.tile-name{display:block;text-align:center;font-size:.85rem;line-height:1.5;font-weight:700;margin-top:10px;color:inherit;white-space:normal;max-width:100%;overflow-wrap:anywhere}.tile.red{background:linear-gradient(115deg,#fffaf2,#ffead5);border-color:#bc8c72}.red-name{text-decoration:underline;text-underline-offset:.2em}.tile.back{background:repeating-linear-gradient(120deg,#456d45,#456d45 4px,#50784f 4px,#50784f 8px);border:4px solid #edeedc}.tile.turned{transform:rotate(90deg)}.tile-unit:has(.turned){width:calc(4.35 * var(--tile-unit))}
.conditions{padding:24px 32px;background:#f3f6eb}.condition-title{display:flex;align-items:center}.round{font-size:1.8rem;font-weight:700;margin:0;line-height:1.6}.round small{font-size:1.1rem;margin-left:18px;white-space:nowrap}.seat-roles{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}.seat-badge{border:2px solid #a8b79c;background:#fffef8;padding:8px 14px;border-radius:5px;font-size:1rem;font-weight:700}.viewer-badge{border-color:#9c7330;color:#684719;background:#fff8e8}.condition-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.tag{font-size:.9rem;color:#2d4e38;border:1px solid #b8c8aa;padding:5px 12px;border-radius:4px;background:#fffef9}.tag.accent{color:#6c4916;border-color:#bca06c;background:#fff7e6}
.hand-section{padding:26px 32px 32px;background:#1b4737;color:#fffef5;border-top:5px solid #b6c8a7}.hand-heading{display:flex;align-items:center;justify-content:space-between;gap:14px}.hand-heading h2{font-size:1.15rem;font-weight:700;margin:0}.hand-note{font-size:.9rem;color:#eef3e7;margin:12px 0 20px}.call{font-size:1.7rem;font-weight:700;color:#ffe3a1;white-space:nowrap}.tile-label{display:block;font-size:.95rem;color:#f1f5e9;font-weight:600;margin-bottom:14px}.hand-scroll{overflow-x:auto;padding:5px 6px 20px;scrollbar-color:#9db990 #15392a;scrollbar-width:auto}.hand-layout{display:flex;gap:26px;align-items:flex-start;width:max-content}.winning-block .tile{outline:3px solid #f6cb64;outline-offset:3px}.meld-area{display:flex;gap:28px;flex-wrap:wrap;margin-top:16px}.meld-item{max-width:100%;overflow-x:auto;padding:8px 8px 12px 0}.meld-item .tile-label{margin-bottom:24px}.dora-area{display:flex;gap:25px 32px;flex-wrap:wrap;border-top:1px solid #dce7d466;margin-top:24px;padding-top:24px}.dora-item{display:flex;gap:16px;align-items:center;max-width:100%}.dora-item .tile-label{margin:0;min-width:3.7rem;font-size:.9rem}.dora-item .tile-row{overflow-x:auto;padding:4px 4px 10px}
.answer-actions{padding:28px 24px;text-align:center;border-bottom:1px solid var(--line)}.answer-actions p{color:var(--muted);margin:0 0 16px;font-size:1rem}.answer{padding:32px}.answer-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;padding-bottom:24px;border-bottom:1px solid var(--line)}.score{font-size:2.3rem;font-weight:700;line-height:1.4}.score small{font-size:1.1rem;margin:0 12px 0 4px}.limit{display:inline-block;background:#f1e5c9;color:#694916;font-size:1rem;padding:3px 12px;margin-top:8px;border-radius:4px}.score-payment{font-size:.95rem;color:var(--muted)}.score-payment strong{display:block;font-size:1.9rem;color:var(--green)}.score-payment strong small{font-size:1rem;margin-left:6px}.payment-lines{display:flex;gap:14px;margin-top:20px;flex-wrap:wrap}.payment-box{flex:1;min-width:min(260px,100%);background:#edf2e4;border-radius:6px;padding:14px 18px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 14px;font-size:.95rem}.payment-box strong{font-size:1.2rem}.bonus-note{font-size:.9rem;color:var(--muted);margin:14px 0 0}
.answer h3{font-size:1.25rem;margin:32px 0 16px}.yaku-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.yaku-card{border:1px solid #b7c3ab;border-radius:7px;padding:18px}.yaku-card header{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;align-items:center}.yaku-name{font-size:1.2rem;font-weight:700}.yaku-name small{display:block;font-size:.95rem;margin-top:4px;color:var(--muted);font-weight:600}.han-badge{font-size:1.1rem;color:var(--green);font-weight:700;white-space:nowrap}.yaku-card p{font-size:1rem;color:var(--muted);margin:12px 0 0}.fu-table{width:100%;border-collapse:collapse;font-size:1rem}.fu-table th{text-align:left;font-size:.95rem;padding:12px;border-bottom:2px solid #a8b79b;background:#f0f3e7}.fu-table td{padding:16px 12px;border-bottom:1px solid var(--line);vertical-align:top}.fu-table td:nth-child(2){white-space:nowrap;font-weight:700;color:var(--green);text-align:right;width:80px}.fu-table td:last-child{color:var(--muted);font-size:1rem;width:52%}.fu-total{text-align:right;font-size:1rem;margin:16px 0}.fu-total strong{font-size:1.5rem;margin-left:16px}.calculation{background:#f0f3e7;border-radius:6px;padding:20px;font-size:1rem}.calculation p{margin:8px 0}.point{margin-top:28px;border-left:5px solid var(--gold);background:#fcf2dd;padding:20px 24px}.point h3{margin:0 0 12px;color:#684615;font-size:1.2rem}.point p{font-size:1rem;margin:10px 0}.decomposition{font-size:.9rem;color:var(--muted);margin-top:18px}.navigation{display:flex;justify-content:space-between;gap:16px;margin-top:22px;flex-wrap:wrap}
.payer-panel{margin-top:28px;padding:24px;border:2px solid #8ca37c;border-radius:8px;background:#f4f8ed}.payer-panel h3{margin:0 0 16px}.payer-panel p{margin:12px 0}.payer-role{font-weight:700}.payer-amount{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 18px;border-top:1px solid #c8d5bd;border-bottom:1px solid #c8d5bd;padding:14px 0}.payer-amount strong{font-size:2.1rem;line-height:1.4}.payer-amount strong span{font-size:1.1rem;margin-left:8px}.payer-amount>span{font-size:.9rem}.payer-steps{padding-left:1.7em}.payer-steps li{padding:6px 0 6px 6px}.table-scroll{overflow-x:auto}.payer-table{width:100%;border-collapse:collapse;font-size:.95rem}.payer-table caption{text-align:left;font-weight:700;margin:18px 0 12px}.payer-table th,.payer-table td{padding:14px 12px;border:1px solid #c1cfb5;text-align:left;vertical-align:top}.payer-table th{background:#e6eedb}.payer-table td strong{display:block;font-size:1.15rem;margin-top:8px}.payer-table .current-role{background:#fff1cc}.payer-table .current-role td:first-child{border-left:5px solid #956918}.payer-note{font-size:.9rem;color:var(--muted)}
.rule-note{display:flex;gap:18px;padding:28px 0;margin-top:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.note-icon{border:1px solid #889879;border-radius:50%;min-width:38px;height:38px;text-align:center;line-height:36px;font-size:1rem}.rule-note strong{font-size:1rem}.rule-note p{font-size:.9rem;color:var(--muted);margin:8px 0 0}footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;padding:24px 0 32px;color:var(--muted);font-size:.8rem}.mobile-only{display:none}.error{background:#fff0e9;color:#80331e;padding:20px;margin:20px;border-radius:6px}.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}.appear{animation:appear .25s ease-out}@keyframes appear{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:900px){.yaku-list{grid-template-columns:1fr}.intro-number{padding:0 0 0 22px}.intro{gap:16px}h1{font-size:1.75rem}.payer-panel{padding:20px 16px}}
@media(max-width:650px){main{padding:0 14px}.header-inner{padding:18px 14px;flex-wrap:wrap}.brand{font-size:1.35rem}.header-right{font-size:.85rem}.header-right a{margin-left:8px}.intro{padding:28px 0 22px;align-items:flex-start}h1{font-size:1.5rem}h1 span{display:block}.intro-number{display:none}.toolbar{grid-template-columns:1fr;gap:18px}.audio-options{padding-top:0}.practice-head{font-size:.9rem;padding-top:20px}.steps{padding:18px 12px;gap:8px;font-size:.95rem}.steps span{gap:6px}.steps b{min-width:30px;height:30px;line-height:28px;font-size:.8rem}.conditions{padding:22px 16px}.round{font-size:1.6rem}.round small{margin-left:10px}.seat-badge{width:100%}.hand-section{padding:24px 16px}.hand-heading{flex-wrap:wrap}.hand-layout{gap:22px}.meld-area{gap:20px}.dora-area{gap:22px}.dora-item{flex-wrap:wrap}.answer{padding:24px 16px}.score{font-size:2rem}.fu-table,.fu-table tbody{display:block}.fu-table thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.fu-table tr{display:grid;grid-template-columns:minmax(0,1fr) auto;padding:14px 0;border-bottom:1px solid var(--line)}.fu-table td{display:block;border:0;padding:4px 6px}.fu-table td:nth-child(2){width:auto}.fu-table td:last-child{width:auto;grid-column:1 / -1}.point{padding:18px}.calculation{padding:16px}.button{padding:14px 18px;gap:16px}.welcome{padding:32px 16px}.welcome h2{font-size:1.4rem}.navigation .button{flex:1 1 250px}.payer-table{min-width:510px}footer{flex-direction:column;gap:8px}}
.welcome .demo-tiles{width:max-content;max-width:100%;margin:auto;justify-content:flex-start;overflow-x:auto;padding:6px 4px 12px}.dora-item .tile-row{min-width:0;max-width:100%;flex-shrink:1}.steps{flex-wrap:wrap}
/* Text and tile sizes are independent. All tile faces share --tile-unit. */
.header-inner{padding:12px 24px}.brand{font-size:1.1rem;letter-spacing:.02em;gap:10px}.brand-mark{padding:4px 9px}.brand small{display:inline;font-size:.8rem;margin-left:10px}.header-right{font-size:.8rem}
.settings{margin-top:14px;border:1px solid var(--line);border-radius:6px;background:#fbfcf6;font-size:.85rem}.settings>summary{cursor:pointer;padding:9px 14px;font-weight:600;min-height:40px}.settings>summary span{font-weight:500;color:var(--muted);margin-left:16px}.settings .toolbar{grid-template-columns:repeat(3,minmax(0,1fr));padding:12px 14px;gap:12px 16px;border-bottom:0;font-size:.85rem}.settings .toolbar select{font-size:.85rem;min-height:42px;padding:6px 24px 6px 8px}.settings .audio-options{padding-top:16px;font-size:.85rem;gap:16px}.settings input[type=checkbox]{width:20px;height:20px}
.practice-head{padding:16px 0 10px}.steps{padding:12px 24px;font-size:.9rem}.steps b{min-width:30px;height:30px;line-height:28px}.welcome{padding:26px 24px}.welcome h2{margin:20px 0 8px}.welcome p{margin-bottom:20px}.welcome small{margin-top:12px;font-size:.8rem}.conditions{padding:18px 24px}.seat-roles{margin-top:10px}.seat-badge{padding:5px 10px}.condition-tags{margin-top:12px}.tag{padding:3px 10px}.hand-section{padding:22px 24px}.answer h3{margin-top:26px}.payer-panel h3{margin-top:0}.decomposition summary{cursor:pointer}.decomposition p{margin:8px 0}.audio-status{color:#7c3819;background:#fff0dc;border:1px solid #ba8750;padding:8px 12px;font-size:.85rem}footer{padding:18px 0;font-size:.8rem}
@media(max-width:900px){.settings .toolbar{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){.header-inner{padding:10px 14px;gap:8px}.brand small{display:none}.settings .toolbar{grid-template-columns:1fr;gap:10px}.settings .toolbar>label{gap:4px}.settings .audio-options{padding-top:0}.steps{padding:12px;font-size:.9rem}.conditions,.hand-section{padding:18px 16px}.welcome{padding:24px 16px}}
.settings-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:8px 14px;font-weight:600}.settings-heading #settings-summary{font-weight:500;color:var(--muted);margin-left:12px}.settings-heading button{font-size:.85rem;color:var(--green);background:#edf3e5;border:1px solid #9eaf96;border-radius:5px;padding:5px 16px;min-height:36px;white-space:nowrap}.premise-note{border-left:4px solid #9a7838;background:#fff8e9;padding:12px 16px;margin-top:14px;font-size:.95rem}.premise-note p{margin:5px 0 0}.amount-pay strong{color:#8a3e1d}.amount-receive strong{color:var(--green)}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
/* One-line view preserves the selected tile size and scrolls horizontally. */
.hand-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:12px 0 18px}.hand-tools .hand-note{margin:0;flex:1 1 220px}.hand-tools button{color:#183c30;background:#fff3d0;border:1px solid #d5b360;border-radius:6px;padding:8px 14px;min-height:44px;font-size:.9rem;font-weight:700;white-space:nowrap}
.hand-overview{display:flex;width:100%;min-width:0;gap:16px;align-items:flex-start;overflow-x:auto;padding:6px 6px 20px}.overview-group{flex:0 0 auto;min-width:0}.overview-group .tile-label{margin-bottom:14px}.overview-winning .tile{outline:3px solid #f6cb64;outline-offset:3px}.overview-winning .tile-label{color:#ffe3a1;text-align:center}
.outcome-summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px;margin:20px 0 0}.outcome-summary>div{padding:12px 16px;background:#f0f3e7;border:1px solid #cbd2c2;border-radius:6px}.outcome-summary dt{font-size:.85rem;color:var(--muted)}.outcome-summary dd{margin:4px 0 0;font-size:1rem;font-weight:700}
.point-parts>section{padding:14px 0;border-bottom:1px solid var(--line)}.point-parts>section:first-child{padding-top:0}.point-parts h4{font-size:1.05rem;margin:0 0 10px}.point-parts p{margin:8px 0}.point-parts .combined-total{background:#e3ecd6;border:1px solid #a5b795;border-radius:6px;padding:16px;margin-top:16px}.point-parts strong{color:var(--green)}
.premise-box{margin-top:14px;padding:12px;border:1px solid #afaa8c;border-radius:6px;background:repeating-linear-gradient(135deg,#e7e9d5 0,#e7e9d5 2px,#f5f6e9 2px,#f5f6e9 9px)}.premise-box h3{margin:0 0 8px;font-size:1rem}.premise-content{background:#fffef9;border-radius:4px;padding:8px 12px}.premise-content .premise-note{margin:0;padding:8px 0;border:0;background:transparent}.premise-content .premise-note+.premise-note{border-top:1px solid #d6d7bf}.no-premise{margin:0;font-size:.95rem}
.fit-tiles .hand-overview{gap:4px;overflow-x:hidden}.fit-tiles .tile-row{gap:1px}.fit-tiles .tile-name{display:none}.fit-tiles .overview-group{width:calc(var(--tile-count) * 3.1 * var(--tile-unit) + (var(--tile-count) - 1) * 1px)}.fit-tiles .overview-group .tile-label{font-size:.8rem;overflow-wrap:anywhere;overflow:hidden}.fit-tiles .demo-tiles{width:100%}