:root{color-scheme:dark;--bg:#101d33;--table:#192d49;--line:#304965;--paper:#fafcff;--blue:#83c7ff;--muted:#9eafc5;--text:#edf4ff;--green:#8ee5b6;--red:#ff9caf;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;min-width:0;min-height:100svh;background:var(--bg);color:var(--text)}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer;color:inherit;border:0}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--blue);outline-offset:3px}a{color:var(--blue);text-decoration:none}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}h1{font-size:32px;line-height:1.5;letter-spacing:-.6px;font-weight:600}h2{font-size:21px;font-weight:550}h3{font-size:16px;font-weight:550}.muted{color:var(--muted)}
.site-header{max-width:1440px;margin:auto;min-height:72px;padding:16px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid #233751}.brand{color:var(--text);display:flex;gap:11px;align-items:center;font-size:19px;font-weight:650;white-space:nowrap}.brand img{flex:none}.brand small{display:block;font-size:9px;letter-spacing:3px;color:var(--muted);font-weight:400;margin-top:3px}.site-header nav{display:flex;gap:4px;align-items:center}.nav-button,.install-button{min-height:44px;padding:10px 15px;background:none;color:var(--muted);font-size:13px}.nav-button.active{color:var(--blue)}.install-button{border:1px solid var(--line);border-radius:6px;margin-left:10px}.site-footer{max-width:1440px;margin:auto;padding:12px 32px;display:flex;justify-content:space-between;gap:12px;color:#8095b1;font-size:11px}.notice{padding:10px 18px;background:#573b21;color:#ffdfb6;font-size:13px;text-align:center}
#app{width:100%;max-width:1344px;margin:auto;padding:28px 32px;min-height:calc(100svh - 115px)}.primary,.secondary,.text-button{min-height:44px;padding:11px 18px;border-radius:6px;font-size:14px;font-weight:550;line-height:1.35}.primary{background:var(--blue);color:#10213a}.secondary{background:#203956;border:1px solid var(--line)}.text-button{background:none;color:var(--muted)}.primary:hover{background:#a7d7ff}.secondary:hover{background:#2a4565}.text-button:hover{color:var(--paper)}.button-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.home-layout{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:48px;min-height:calc(100svh - 174px)}.intro{display:flex;flex-direction:column;min-width:0}.intro h1{margin:0 0 10px}.intro>p{color:var(--muted);font-size:13px;line-height:1.8;margin-bottom:24px}.home-table{position:relative;background:var(--table);border:1px solid var(--line);border-radius:16px;min-height:230px;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:36px 26px;overflow:hidden}.home-table:before{content:'';position:absolute;inset:13px;border:1px solid #304965;border-radius:10px;pointer-events:none}.cover-art{display:block;width:100%;height:clamp(150px,29svh,280px);object-fit:contain;flex:none;position:relative}.table-caption{font-size:11px;letter-spacing:2px;color:#9eb5d0;margin-top:34px}.rules-strip{display:flex;margin-top:22px}.rules-strip>div{flex:1;text-align:center;border-right:1px solid #2a3e58}.rules-strip>div:last-child{border:0}.rules-strip strong{display:block;font-size:23px;font-weight:500;font-variant-numeric:tabular-nums}.rules-strip small{font-size:12px;color:var(--muted);margin-left:4px}.rules-strip span{display:block;font-size:11px;color:var(--muted);margin-top:8px}.configuration{display:flex;flex-direction:column;padding-top:12px}.configuration form{margin-block:auto}.form-intro{color:var(--muted);font-size:13px;line-height:1.9;margin-bottom:25px}.field>span{display:block;color:#b3c3d8;font-size:13px;margin-bottom:10px}.row-stepper{display:grid;grid-template-columns:48px 1fr 48px;gap:8px}.step-button{background:#203956;border:1px solid var(--line);border-radius:5px;min-height:48px;font-size:22px}.row-stepper input{min-width:0;width:100%;text-align:center;min-height:48px;font-size:20px;font-variant-numeric:tabular-nums;background:#14243d;color:var(--paper);border:1px solid var(--line);border-radius:5px;appearance:textfield}.row-stepper input::-webkit-inner-spin-button{appearance:none}.field-hint{font-size:12px;color:#8da4c0;margin:10px 0}.field-hint b{color:#b9d9f7;font-weight:500}.training-rules{display:none}.training-rules p{font-size:12px;color:var(--muted);margin-bottom:10px}.training-rules .mobile-note{display:none}.form-error{color:#ffb0b5;font-size:13px;line-height:1.6}.form-error:empty{display:none}.start-button{width:100%;min-height:48px;margin-top:12px}.start-hint{text-align:center;font-size:11px;color:#8198b4;margin:12px 0 0}.home-branding{padding-top:30px;text-align:center;color:#8fa9c7}.copyright{font-size:14px;line-height:1.6;margin:0}.contact-info{font-size:12px;line-height:1.8;margin:4px 0 0}.contact-info span{display:inline-block;white-space:nowrap}.site-url{font-size:14px;margin:4px 0 0}.site-url a{display:inline-flex;align-items:center;min-height:32px;color:#8fa9c7;text-decoration:underline;text-underline-offset:3px;padding:0 8px}
body[data-screen=memory] .nav-button,body[data-screen=recall] .nav-button,body[data-screen=result] .nav-button,body[data-screen=review] .nav-button{display:none}body[data-screen=memory] .install-button,body[data-screen=recall] .install-button,body[data-screen=result] .install-button,body[data-screen=review] .install-button{display:none}.session-top{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.session-title{display:flex;gap:14px;align-items:center}.phase-tag{border-left:3px solid var(--blue);padding-left:12px;color:var(--blue);font-size:16px;white-space:nowrap}.session-title .muted{font-size:12px;white-space:nowrap}.timer-area{display:flex;gap:24px}.timer-area>div{display:flex;gap:10px;align-items:baseline}.timer-area small{font-size:11px;color:var(--muted);white-space:nowrap}.timer-area b{font:26px/1.2 Consolas,"SFMono-Regular",monospace;font-weight:400;white-space:nowrap;font-variant-numeric:tabular-nums}.session-actions{display:flex;gap:8px}.row-pager{display:none;align-items:center;justify-content:space-between;gap:10px;margin:12px 0}.row-pager label{font-size:12px;color:var(--muted);white-space:nowrap}.row-pager select{min-height:44px;background:#192d49;color:var(--paper);border:1px solid var(--line);border-radius:5px;padding:6px}.number-desk{padding:16px 24px;background:var(--table);border:1px solid var(--line);border-radius:12px;max-height:48svh;overflow-y:auto;scrollbar-color:#4c6b8c transparent}.training-line+.training-line{margin-top:10px}.digit-grid{display:grid;grid-template-columns:repeat(var(--digits-per-row,40),minmax(0,1fr));gap:4px;align-items:center}.digit{font-family:Consolas,"SFMono-Regular",monospace;font-variant-numeric:tabular-nums;text-align:center;min-width:0}.memory-digit{font-size:clamp(18px,2.2vw,32px);line-height:48px;font-weight:500;color:#fafcff}.answer-digit{background:#203956;color:#edf4ff;min-height:44px;border-radius:3px;padding:0;font-size:clamp(17px,1.8vw,26px);border-bottom:1px solid #4a6481}.answer-digit.empty{color:#6c88a8}.digit.selected{background:#b9dcf8!important;color:#102b46!important;border-color:#83c7ff!important}.input-controls{max-width:580px;margin:16px auto 0}.editor-heading{display:flex;justify-content:space-between;color:#a6bdd7;font-size:12px;margin-bottom:10px}.keypad{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.number-key{min-height:46px;border:1px solid #415f80;border-radius:5px;background:#213c5b;font:24px/1 Consolas,"SFMono-Regular",monospace}.number-key:hover{background:#305578}.number-key:active{background:#83c7ff;color:#10213a}.answer-actions{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:8px;margin-top:8px}.keyboard-hint{text-align:center;font-size:11px;color:#8198b4;line-height:1.6;margin:12px 0 0}.result-summary{display:flex;align-items:center;gap:36px;padding:16px 0;margin:0 0 4px;border-block:1px solid #2a3e58}.result-summary>div{display:flex;flex-direction:column;gap:7px}.result-summary strong{font-size:25px;font-weight:500;font-variant-numeric:tabular-nums}.result-summary small{font-size:14px;color:#9ab0ca}.result-summary span{font-size:11px;color:var(--muted)}.result-summary .score-main strong{font-size:38px;color:var(--blue)}.result-desk{max-height:48svh;padding:12px 24px}.result-panels{display:grid;gap:18px;margin-top:16px}.result-label{font-size:13px;font-weight:500;color:var(--muted);margin:0 0 8px}.result-digit{min-height:36px}.result-digit.wrong{background:#613746;color:#ffe1e7;border-color:#c37487}.original-digit.wrong-text{color:var(--red)}.correct-text{color:var(--green)}.wrong-text,.danger-text{color:var(--red)}.result-actions{margin:18px 0 0}.page-heading{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:24px}.page-heading h1{font-size:28px;margin:0 0 8px}.page-heading p{font-size:13px;color:var(--muted);line-height:1.6;margin:0}.history-tools{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}.history-row{display:grid;grid-template-columns:1fr 1fr 1.1fr auto;gap:20px;align-items:center;padding:20px 0;border-top:1px solid #2a3e58}.history-row time{display:block;color:var(--muted);font-size:12px;margin-bottom:8px}.history-count{font-size:13px}.history-score{font-size:26px;font-variant-numeric:tabular-nums}.history-score small{font-size:13px;color:var(--muted)}.history-score>span{display:block;font-size:11px;color:var(--muted);margin-top:6px}.history-times{display:flex;flex-direction:column;gap:7px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.history-actions{display:flex;gap:8px}.empty-state{text-align:center;padding:70px 20px}.empty-symbol{margin:0 auto 28px;display:grid;place-items:center;width:96px;height:80px;border:1px solid var(--line);border-radius:10px;font:36px/1 Consolas,monospace;color:var(--blue);background:var(--table)}.empty-state p{color:var(--muted);font-size:13px;line-height:1.8;margin-bottom:26px}
dialog{width:min(520px,calc(100vw - 28px));max-height:85svh;overflow-y:auto;border:1px solid #496686;border-radius:12px;padding:25px;background:#192d49;color:#edf4ff;box-shadow:0 24px 80px #0006}dialog::backdrop{background:#061020aa}dialog h2{font-size:21px;margin-bottom:16px}.dialog-copy{font-size:14px;color:#b7cae0;line-height:1.9}.dialog-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:10px;margin-top:24px}.help-copy{font-size:13px;line-height:1.9;color:#b6c9df}.help-copy h3{color:#edf4ff;margin:22px 0 10px}.help-copy h3:first-child{margin-top:0}.detail-pair{display:flex;justify-content:center;gap:35px;text-align:center}.detail-pair small{display:block;font-size:12px;color:var(--muted);margin-bottom:12px}.detail-pair b{font:64px/1 Consolas,monospace;color:var(--paper)}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:calc(100vw - 28px);background:#335577;border:1px solid #7ba6d0;padding:12px 18px;border-radius:7px;z-index:10;font-size:13px;line-height:1.6;text-align:center;box-shadow:0 6px 24px #0004}
@media(min-width:801px) and (max-width:1100px){.home-layout{grid-template-columns:minmax(0,1fr) 310px;gap:30px}.timer-area{gap:14px}.timer-area>div{display:block}.timer-area small{display:block;margin-bottom:4px}.session-title{display:block}.session-title .muted{display:block;margin:7px 0 0 15px}.digit-grid{gap:2px}.number-desk{padding:18px}}
@media(max-width:800px){.site-header{min-height:62px;padding:10px 18px}.brand{font-size:18px;gap:9px}.brand img{width:36px;height:36px}.brand small{font-size:8px}.site-header nav{gap:0}.nav-button{padding:8px;font-size:11px}.install-button{display:none}.site-footer{padding:10px 18px}.site-footer>span:first-child{display:none}#app{padding:18px;min-height:calc(100svh - 104px)}.home-layout{grid-template-columns:1fr;gap:23px;min-height:0}.intro h1{font-size:25px;line-height:1.45;margin-bottom:12px}.intro>p{display:none}.home-table{min-height:130px;padding:30px 17px;border-radius:10px}.home-table:before{inset:8px;border-radius:6px}.cover-art{height:130px}.home-table{min-height:150px;padding:16px 12px}.table-caption{display:none}.rules-strip{display:none}.configuration{padding-top:0}.configuration form{margin:0}.configuration h2{font-size:18px;margin-bottom:14px}.form-intro{display:none}.row-stepper{grid-template-columns:48px 1fr 48px}.training-rules{display:block;padding:10px 0 0;margin-top:10px;border:0}.training-rules p{margin-bottom:8px;font-size:11px}.training-rules .mobile-note{display:block}.start-button{margin-top:8px}.start-hint{display:none}.home-branding{padding-top:18px}.copyright{font-size:12px}.contact-info{font-size:11px}.site-url{font-size:13px}.session-top{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px 8px;margin-bottom:12px}.session-title{display:flex;gap:8px}.phase-tag{font-size:14px;padding-left:8px}.session-title .muted{font-size:10px}.timer-area{grid-column:1/-1;order:3;justify-content:space-between;gap:8px}.timer-area>div{gap:7px}.timer-area b{font-size:22px}.timer-area small{font-size:10px}.session-actions .primary{font-size:12px;padding:10px 12px}.session-actions .text-button{font-size:11px;padding:10px 0 10px 8px}.row-pager{display:flex;margin:8px 0}.row-pager .secondary{font-size:11px;padding:8px 12px}.number-desk{padding:14px 12px;max-height:none;overflow:visible;border-radius:8px}.training-line:not(.current-row){display:none}.training-line+.training-line{margin-top:0;padding-top:0;border-top:0}.digit-grid{grid-template-columns:repeat(20,minmax(0,1fr));gap:4px 1px}.memory-digit{font-size:clamp(16px,4.7vw,22px);line-height:45px}.answer-digit{font-size:clamp(16px,4.7vw,22px);min-height:37px;border-radius:2px;background:transparent;border-bottom:1px solid #44607d}.answer-digit.empty{color:#6b87a9}.input-controls{margin-top:12px;max-width:none}.editor-heading{font-size:11px;margin-bottom:9px}.keypad{gap:6px}.number-key{min-height:48px;font-size:24px}.answer-actions{gap:6px}.answer-actions .secondary,.answer-actions .primary{font-size:12px;padding:10px 5px;min-height:46px}.keyboard-hint{display:none}.result-summary{justify-content:space-between;gap:12px;padding:15px 0}.result-summary strong{font-size:22px}.result-summary .score-main strong{font-size:30px}.result-summary small{font-size:11px}.result-summary span{font-size:10px}.result-panels{gap:16px}.result-digit{min-height:34px}.result-actions .primary,.result-actions .secondary{font-size:13px}.page-heading{margin-bottom:20px;gap:12px}.page-heading h1{font-size:24px}.page-heading p{font-size:11px}.page-heading>.secondary{font-size:12px;white-space:nowrap}.history-row{grid-template-columns:1fr 1fr;gap:14px;padding:18px 0}.history-actions{justify-content:flex-end}.history-actions .secondary,.history-actions .text-button{font-size:12px}.history-score{text-align:right;font-size:25px}.history-times{font-size:11px}.empty-state{padding:45px 5px}.empty-state p{font-size:12px}body:not([data-screen=home]) .site-footer{display:none}dialog{padding:22px 18px}.toast{bottom:16px}}
@media(max-width:360px){.site-header{padding-inline:14px}.nav-button{font-size:10px;padding-inline:6px}#app{padding:14px}.brand{font-size:16px}.session-title{gap:6px}.session-title .muted{font-size:9px}.timer-area b{font-size:20px}.number-desk{padding-inline:10px}.memory-digit,.answer-digit{font-size:16px}.copyright{font-size:11px}.contact-info{font-size:10px}.home-table{min-height:140px}.cover-art{height:115px}.home-layout{gap:18px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.original-sequence{margin:0;text-align:center;font:15px/1.8 Consolas,"SFMono-Regular",monospace;letter-spacing:1.8px;color:var(--paper);overflow-wrap:anywhere}
.original-digit.wrong-text{color:var(--red)}
body[data-screen=memory] .number-desk{max-height:var(--memory-desk-height,calc(100svh - 280px));overflow-y:auto}
@media(max-width:800px){body[data-screen=memory] .number-desk{overflow-y:auto}body[data-screen=memory] .training-line{display:block}body[data-screen=memory] .training-line+.training-line{margin-top:10px}.original-sequence{font-size:12px;letter-spacing:1px;line-height:1.9}}

@media(max-width:800px){.training-rules>p:not(.mobile-note){display:none}}

.memory-actions{display:flex;justify-content:center;margin-top:18px}.memory-actions .primary{min-width:160px;min-height:48px}

body[data-screen=result] .site-footer,body[data-screen=review] .site-footer{display:none}
.classic-result{max-width:1280px;margin:0 auto}
.classic-controls{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:0 0 18px;min-height:28px}.classic-session-count{font-size:14px;color:var(--muted)}.classic-session-count strong{color:#E6EDF7;font-weight:500;margin-left:7px}.classic-status-key{display:flex;gap:18px;font-size:12px;color:#E6EDF7}.classic-status-key span:last-child{color:#F1A087}
.classic-answers{margin-bottom:22px}.classic-answer-row{display:grid;grid-template-columns:repeat(var(--digits-per-row,40),minmax(0,1fr));gap:3px;margin-bottom:7px}.classic-answer{width:100%;height:44px;min-width:0;padding:0;text-align:center;font:clamp(20px,2.1vw,30px)/42px Consolas,'SFMono-Regular',monospace;border:1px solid #3D5673;border-radius:2px;background:#1C324E;color:#E6EDF7;box-shadow:none;caret-color:transparent}.classic-answer.wrong{background:#1C324E;border-color:#7F655F;color:#F1A087}.classic-answer:focus{outline:none}
.classic-summary{display:flex;justify-content:center;flex-wrap:wrap;gap:16px 36px;margin:26px 0 30px}.result-stat{display:flex;align-items:baseline;gap:10px;white-space:nowrap}.result-stat>span{font-size:13px;color:#8FA5BF}.result-stat>strong{font-size:20px;font-weight:500;color:#ACCBE8;font-variant-numeric:tabular-nums}.classic-original-block h2{margin:0 0 10px;font-size:12px;color:var(--muted);font-weight:400}.classic-originals{margin:0;text-align:center;font:clamp(18px,1.6vw,23px)/1.8 Consolas,'SFMono-Regular',monospace;letter-spacing:0;color:#E6EDF7;overflow-wrap:anywhere}.classic-originals .wrong-text{color:#F1A087}
.classic-restart{display:flex;justify-content:center;gap:12px;margin:26px 0 8px}.classic-restart button{font-size:16px;padding:10px 20px;min-width:160px}

@media(max-width:800px){.classic-controls{gap:12px;margin-bottom:16px}.classic-session-count{font-size:12px}.classic-session-count strong{margin-left:4px}.classic-status-key{gap:10px;font-size:10px}.classic-answer-row{grid-template-columns:repeat(10,minmax(0,1fr));gap:3px 2px;margin-bottom:7px}.classic-answer{height:38px;font-size:clamp(16px,4.7vw,20px);line-height:36px}.classic-summary{gap:14px 22px;margin:22px 0 26px}.result-stat{gap:7px}.result-stat>span{font-size:12px}.result-stat>strong{font-size:18px}.classic-originals{font-size:16px;line-height:1.85}.classic-restart{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:22px}.classic-restart button{flex:1;min-width:0;font-size:14px;padding:10px 12px}}

@media(max-width:800px){
 .site-footer{display:none}
 body[data-screen=recall]{height:100vh;height:100dvh;display:flex;flex-direction:column;overflow:hidden}
 body[data-screen=recall] .site-header{width:100%;flex:none}
 body[data-screen=recall] #app{flex:1;min-height:0;display:flex;flex-direction:column;padding-bottom:max(14px,env(safe-area-inset-bottom))}
 body[data-screen=recall] .session-top{flex:none}
 body[data-screen=recall] .row-pager{display:none}
 body[data-screen=recall] .number-desk{flex:1;min-height:0;max-height:none;overflow-y:auto;overscroll-behavior:contain}
 body[data-screen=recall] .training-line{display:block}
 body[data-screen=recall] .training-line+.training-line{margin-top:10px}
 body[data-screen=recall] .input-controls{width:100%;flex:none;margin-top:12px}
}

.row-size-mobile,.result-home-nav{display:none}
body[data-screen=result] .result-home-nav,body[data-screen=review] .result-home-nav{display:block;min-height:36px;padding:8px 0 8px 8px;font-size:13px}
@media(max-width:800px){
 .row-size-desktop{display:none}.row-size-mobile{display:inline}
 .training-rules{height:26px;margin-bottom:8px}
 body[data-screen=result] .result-home-nav,body[data-screen=review] .result-home-nav{display:block;min-height:36px;padding:8px 0 8px 8px;font-size:11px}
 .classic-summary{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px 8px}
 .classic-summary .result-stat{grid-column:span 2;justify-content:center;min-width:0}
 .classic-summary .result-stat:nth-child(n+4){grid-column:span 3}
 .classic-summary .result-stat:nth-child(4){justify-content:flex-end;padding-right:10px}
 .classic-summary .result-stat:nth-child(5){justify-content:flex-start;padding-left:10px}
}