:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;color:#243952;background:#f7f9fc;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,select{font:inherit}button{cursor:pointer;border:0;touch-action:manipulation}button:focus-visible,select:focus-visible{outline:3px solid #78a6f2;outline-offset:3px}header{height:88px;border-bottom:1px solid #e5eaf1;background:#fff;padding:0 max(28px,calc((100vw - 1120px)/2));display:flex;align-items:center;justify-content:space-between}.brand{text-decoration:none;color:#243952;font-size:26px;font-weight:750;display:flex;align-items:center;gap:10px}.logo{font-size:36px;color:#2869d8}.brand-sub{font-size:15px;font-weight:400;border-left:1px solid #d7dfe9;padding-left:13px;margin-left:5px;color:#748196}.header-right{display:flex;align-items:center;gap:25px}.adfree{font-size:14px;color:#7d8899}.icon{background:transparent;color:#677b94;padding:9px;font-size:20px;border-radius:8px}main{max-width:980px;margin:43px auto;padding:0 30px}.heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:29px}.eyebrow{font-size:14px;letter-spacing:2px;color:#8390a1}h1{font-size:32px;margin:8px 0 0;letter-spacing:1px}.daily{background:white;border:1px solid #dce5ef;border-radius:9px;padding:14px 18px;color:#38618b;font-size:15px}.daily span{margin-left:13px;color:#8393a8}.game-layout{display:grid;grid-template-columns:minmax(0,550px) minmax(220px,290px);gap:40px}.game-meta{display:flex;align-items:center;gap:24px;height:46px;margin-bottom:10px;font-size:14px;color:#78879a}.game-meta label{display:flex;align-items:center;gap:6px}select{border:0;background:transparent;color:#2f527b;font-weight:600;max-width:90px}.clock{margin-left:auto;display:flex;align-items:center;font-variant-numeric:tabular-nums;gap:8px}.board-wrap{position:relative}#board{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));grid-template-rows:repeat(9,minmax(0,1fr));border:2px solid #354c65;aspect-ratio:1;background:white;border-radius:3px;overflow:hidden}.cell{min-width:0;min-height:0;border-radius:0;background:#fff;border-right:1px solid #dce3ed;border-bottom:1px solid #dce3ed;color:#2f4158;font-size:clamp(22px,3vw,32px);padding:0;display:flex;align-items:center;justify-content:center;position:relative}.cell:nth-child(3n){border-right:2px solid #354c65}.cell:nth-child(9n){border-right:0}.cell:nth-child(n+19):nth-child(-n+27),.cell:nth-child(n+46):nth-child(-n+54){border-bottom:2px solid #354c65}.cell:nth-child(n+73){border-bottom:0}.cell.related{background:#eff4fa}.cell.same{background:#dce9fb}.cell.entered{color:#2869d8}.cell.wrong{color:#d8505b;background:#fff0f1}.cell.selected{background:#bfd8fb;box-shadow:inset 0 0 0 2px #629ee8}.pencil{display:grid;grid-template-columns:repeat(3,1fr);width:100%;height:100%;font-size:12px;color:#61758d;align-items:center}.pencil span{line-height:1}.board-footer{display:flex;justify-content:space-between;margin:14px 0 10px;font-size:13px;color:#8492a5}.progress-track{height:3px;background:#e7edf4;border-radius:3px}.progress-track div{height:3px;background:#6999df;transition:width .2s}aside{padding-top:56px}.primary{background:#2869d8;color:white;border-radius:9px;padding:17px 22px;font-weight:600;font-size:16px}.primary:hover{background:#205bc0}.new{width:100%;display:flex;justify-content:space-between;align-items:center}.new span{font-size:23px;font-weight:400}.tools{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:23px 0}.tools button{background:transparent;color:#647e9e;display:flex;align-items:center;flex-direction:column;gap:8px;padding:8px 0;border-radius:9px}.tools b{font-size:30px;line-height:32px;font-weight:400}.tools span{font-size:14px}.tools small{font-size:12px;padding:1px 4px;border-radius:3px;background:#e4ebf4}.tools button.active{background:#dfebfe;color:#2869d8}.tools button:disabled{opacity:.35;cursor:default}#keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.number{background:#eaf0f9;color:#316bad;border-radius:9px;padding:12px 0 8px;font-size:32px;display:flex;flex-direction:column;align-items:center;gap:3px}.number small{font-size:12px;color:#8396af}.number.done{background:#e3f1ed;color:#509483}.number:hover{background:#d9e7fb}.input-help{font-size:13px;line-height:1.9;color:#8b98a9;text-align:center;margin:15px 0 20px}.tip{border-top:1px solid #e1e8f0;padding-top:19px}.tip>span{font-size:13px;letter-spacing:2px;color:#7187a2}.tip p{font-size:14px;color:#647b96;line-height:1.9;margin:10px 0}.tip div{font-size:12px;color:#97a3b3;line-height:1.8}footer{display:flex;justify-content:space-between;border-top:1px solid #e2e9f1;margin-top:30px;padding-top:24px;color:#9aa5b3;font-size:13px}footer button{background:transparent;color:#6c829f;font-size:13px}#message{min-height:22px;color:#416eab;font-size:14px;margin-top:14px}#overlay{position:absolute;inset:0;background:#f3f7fdf5;display:flex;flex-direction:column;align-items:center;justify-content:center}#overlay[hidden]{display:none}#overlay p{color:#8191a6}dialog{border:1px solid #dce4ef;border-radius:16px;padding:28px;width:min(420px,90vw);color:#243952;box-shadow:0 20px 90px #213c6130}dialog::backdrop{background:#24395260}dialog h2{margin-top:0}dialog p{line-height:1.8;color:#728399}.secondary{padding:12px 20px;border-radius:8px;background:#edf2f9;color:#416384;margin-top:15px}dialog label{display:flex;justify-content:space-between;gap:20px;margin:22px 0}dialog input{width:20px;height:20px}dialog .primary{margin-right:8px}.stat-row{padding:14px 0;border-bottom:1px solid #e7edf4;display:flex;justify-content:space-between}@media(max-width:720px){header{height:64px;padding:0 19px}.brand{font-size:22px}.logo{font-size:30px}.adfree{display:none}main{margin:22px auto;padding:0 16px;max-width:520px}.eyebrow{font-size:12px;letter-spacing:1px}h1{font-size:25px}.heading{margin-bottom:15px}.daily{font-size:13px;padding:10px}.daily span{display:block;margin:5px 0 0;font-size:12px}.game-layout{grid-template-columns:1fr;gap:0}.game-meta{gap:15px;margin-bottom:6px}.cell{font-size:clamp(23px,6.4vw,32px)}aside{padding-top:20px;display:flex;flex-direction:column}.new{order:3;margin-top:12px;padding:12px 18px}.tools{margin:0 0 14px;gap:14px}.tools button{flex-direction:row;justify-content:center;padding:6px;background:#edf2f9;gap:8px}.tools b{font-size:24px}.tools span{font-size:13px}#keypad{grid-template-columns:repeat(9,1fr);gap:5px}.number{font-size:25px;padding:10px 0 7px;border-radius:6px}.number small{font-size:12px}.input-help{margin:12px 0 0;font-size:12px}.input-help br{display:none}.tip{display:none}footer{margin-top:12px;padding-top:18px;font-size:12px;gap:10px}#message{margin-top:12px}.board-footer{margin-top:10px}.pencil{font-size:10px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.daily-levels{margin-top:16px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.daily-choice{padding:20px 12px;background:#eaf0f9;color:#2869d8;border-radius:9px;font-size:16px}.rank-dialog{width:min(650px,96vw)}.rank-filters{display:flex;gap:12px;flex-wrap:wrap}.rank-filters label{display:flex;flex-direction:column;gap:8px;margin:8px 0;font-size:14px}.rank-filters input,.rank-filters select,.nickname{width:auto;height:auto;max-width:100%;border:1px solid #ced9e8;border-radius:6px;padding:10px;font:inherit;background:white;color:#243952}.nickname{width:100%}dialog input.nickname{width:100%;height:auto}.small-copy{font-size:13px;line-height:1.7}.rank-table{border-collapse:collapse;width:100%;font-size:14px}.rank-table th,.rank-table td{padding:10px 5px;border-bottom:1px solid #e2e9f1;text-align:left}.rank-table td:nth-child(2){overflow-wrap:anywhere;max-width:130px}.rank-table td:nth-child(3){white-space:nowrap;font-variant-numeric:tabular-nums}.rank-actions{display:flex;gap:8px;flex-wrap:wrap}#rank-content{overflow-x:auto;max-height:45vh;min-height:60px}.header-right{gap:12px}@media(max-width:400px){.brand-sub{display:none}.rank-filters{gap:6px}.rank-filters input,.rank-filters select{padding:6px}.rank-table{font-size:12px}.rank-table th,.rank-table td{padding:8px 3px}}

[hidden]{display:none!important}.mode-controls{margin-bottom:20px}.mode-tabs{display:flex;padding:4px;background:#e6edf7;border-radius:12px;gap:4px}.mode-tabs button{flex:1;padding:13px 8px;border-radius:9px;color:#526981;background:transparent;font-size:16px;font-weight:650}.mode-tabs button[aria-pressed="true"]{background:#2869d8;color:white}.quick-levels{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:12px}.quick-levels button{padding:12px 4px;border:1px solid #cdd9ea;border-radius:8px;color:#365a84;background:white;font-size:14px}.quick-levels button[aria-pressed="true"]{border-color:#2869d8;background:#eaf2ff;color:#1756bc}.quick-levels button:disabled{opacity:.6}.mode-info{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:8px;font-size:14px;color:#677b94}.text-button{background:transparent;color:#2869d8;padding:8px 0;font-size:14px}.mode-info span{line-height:1.5}@media(max-width:480px){.quick-levels{gap:5px}.quick-levels button{font-size:14px;padding:12px 2px}.mode-info{align-items:flex-start;flex-direction:column;gap:0}}

#mode-profile{max-width:100%;overflow-wrap:anywhere;text-align:left;min-height:44px;flex-shrink:0}

@media(max-width:720px){
 .mode-info{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,45%);align-items:center;gap:12px}
 .mode-info>span{min-width:0;overflow-wrap:anywhere}
 #mode-profile{justify-self:end;max-width:100%;min-width:0;min-height:44px;padding:10px 12px;border:1px solid #2869d8;border-radius:9px;background:#e4efff;color:#174eaa;font-size:16px;font-weight:700;line-height:1.4;text-align:center;overflow-wrap:anywhere}
 #mode-profile:active{background:#cbdfff}
}