:root{color-scheme:dark;--bg:#10181c;--panel:#182328;--panel2:#213139;--line:#34454c;--text:#eef4f3;--muted:#afbdc1;--teal:#79ebcd;--gold:#f1d18b;--wrong:#25343c;font:16px/1.6 'Microsoft YaHei','Yu Gothic',system-ui,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.4}button,input,select{font:inherit}button{cursor:pointer;color:inherit;border:0}button:disabled{cursor:default;opacity:.55}a{color:var(--teal);text-decoration:none}a:hover{text-decoration:underline}[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--teal);outline-offset:4px}button,a,input,summary{-webkit-tap-highlight-color:transparent}.shell{width:100%;max-width:1344px;margin:auto;padding:0 24px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:86px}.brand{display:flex;align-items:center;gap:11px;color:var(--text)}.brand:hover{text-decoration:none}.brand h1{font-size:24px;font-weight:700}.brand-subtitle{font-size:13px;color:var(--muted)}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border:1px solid #619e8e;border-radius:9px;font:700 22px/1 Arial,sans-serif;color:var(--teal);letter-spacing:-2px}.top-actions{display:flex;gap:8px}.text-button{background:transparent;color:var(--muted);font-size:14px;min-height:44px;padding:8px 10px;border-radius:6px}.text-button:hover{color:var(--teal);background:#79ebcd0b}.skip-link{position:fixed;top:-80px;left:16px;padding:12px 18px;background:var(--teal);color:#102c26;z-index:30}.skip-link:focus{top:12px}
.play-panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;min-width:0;padding:20px 24px}.game-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px}.mode-tabs{display:flex;gap:4px;padding:3px;background:#101a1f;border:1px solid var(--line);border-radius:8px}.mode{min-height:42px;padding:8px 18px;background:transparent;color:var(--muted);border-radius:5px;font-size:15px}.mode.active{background:#294139;color:var(--teal);font-weight:600}.mode:hover{color:var(--teal)}.date{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}.session-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 0 11px}.session-heading h2{font-size:20px;font-weight:600}.attempts{display:flex;align-items:baseline;gap:9px;font-variant-numeric:tabular-nums}.attempts>span{font-size:14px;color:var(--muted)}.attempts>strong{font-size:25px;font-weight:700;color:var(--teal)}.attempts strong span{font-size:16px;font-weight:400;color:var(--muted)}.attempt-track{display:flex;gap:5px;margin-bottom:18px}.attempt-track i{flex:1;height:3px;border-radius:3px;background:#3a4b52}.attempt-track .used{background:#a0b6b9}.attempt-track .won{background:var(--teal)}.guess-controls{max-width:760px;margin:0 auto}
#guess-form>label{display:block;font-size:15px;font-weight:600;margin-bottom:8px}.search-entry{position:relative}.search-line{display:flex;gap:10px}.search-control{position:relative;display:flex;align-items:center;flex:1;min-width:0;border:1px solid #6a8c82;border-radius:8px;background:#111c21}.search-control:focus-within{border-color:var(--teal);box-shadow:0 0 0 3px #79ebcd16}.search-symbol{padding-left:13px;font:26px/1 Arial,sans-serif;color:var(--teal)}.search-control input{width:100%;min-width:0;min-height:50px;background:transparent;border:0;color:var(--text);font-size:16px;padding:11px 43px 11px 10px}.search-control input:focus-visible{outline:none}.search-control input::placeholder{color:#a8b8bc;font-size:15px}.clear-search{position:absolute;right:0;top:0;width:40px;height:100%;background:transparent;color:var(--muted);font-size:23px}.primary-button{min-height:44px;border-radius:8px;background:var(--teal);color:#143b31;font-size:15px;font-weight:700;padding:11px 19px;white-space:nowrap}.primary-button:hover:not(:disabled){background:#a3f4df}.secondary-button{min-height:44px;border-radius:7px;border:1px solid #607c74;background:transparent;padding:8px 14px;font-size:14px;color:var(--text)}.secondary-button:hover:not(:disabled){border-color:var(--teal);color:var(--teal)}.input-help{color:var(--muted);font-size:13px;margin-top:8px;line-height:1.7}.feedback-message{color:var(--gold);font-size:14px;margin-top:8px;overflow-wrap:anywhere}.feedback-message:empty{display:none}
.suggestions{position:absolute;top:calc(100% + 6px);left:0;right:0;background:#203139;border:1px solid #688e81;border-radius:9px;padding:5px;max-height:360px;overflow:auto;z-index:10;box-shadow:0 14px 35px #0007}.suggestion{display:flex;align-items:center;gap:12px;padding:11px 10px;border-radius:5px;cursor:pointer}.suggestion:hover,.suggestion.focused{background:#334e46}.suggestion-copy{min-width:0;flex:1}.suggestion-title{font-size:15px;font-weight:600;overflow-wrap:anywhere}.suggestion-sub{display:block;color:var(--muted);font-size:13px;margin-top:5px}.suggestion-alias{display:block;font-size:13px;color:#b5f0d8;margin-top:3px}.suggestion-year{flex-shrink:0;font-size:13px;color:var(--muted)}.no-suggestions{padding:16px;font-size:14px;color:var(--muted)}
.guess-board{margin-top:22px;border-top:1px solid var(--line)}.board-top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:17px 0 10px}.board-top h3{font-size:16px;font-weight:600}.board-top span{font-size:13px;color:var(--muted)}.table-scroll{overflow-x:auto;max-width:100%;padding-bottom:5px;scrollbar-color:#699688 #142027}table{border-collapse:separate;border-spacing:4px;width:100%;min-width:1100px;table-layout:fixed}.one-chart{min-width:870px}.song-col{width:190px}.year-col{width:70px}thead th{color:#c0cecf;font-weight:500;font-size:14px;padding:7px 4px;text-align:center}.column-groups th{font-size:13px;color:#b5dbcc;border-bottom:1px solid #3c5b50;background:#1c302b;padding:7px}.table-scroll thead tr:last-child th:first-child,.table-scroll td:first-child{position:sticky;left:0;z-index:2;box-shadow:4px 0 7px #10181c55}.table-scroll thead tr:last-child th:first-child{background:var(--panel)}
td{background:var(--wrong);border:1px solid #3b4d55;border-radius:7px;padding:10px 7px;text-align:center;vertical-align:middle;font-size:15px;line-height:1.5;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}td.exact{background:#284d40;border-color:#568d73;color:#d1f7e6}td.close{background:#463e28;border-color:#8b7950;color:#ffe4a4}td.wrong{color:#e2e9e8}td.unknown{background:#203038;border:1px dashed #5e747d;color:#becacf}.cell-note{display:block;font-size:12px;line-height:1.5;margin-top:5px;color:inherit}.direction{font-size:19px;font-weight:600;margin-left:5px}.song-entry{display:flex;flex-direction:column;align-items:center;gap:7px}.song-name{font-size:14px;font-weight:600;line-height:1.5;overflow-wrap:anywhere}.empty-board{text-align:center;padding:24px 0}.empty-board strong{font-size:15px;font-weight:500;color:var(--muted)}.starter-chips{display:flex;justify-content:center;flex-wrap:wrap;gap:9px;margin-top:13px}.starter-chip{min-height:40px;padding:7px 12px;border:1px solid #526c65;border-radius:7px;background:transparent;color:var(--text);font-size:14px}.starter-chip:hover{color:var(--teal);border-color:var(--teal)}
.bottom-legend{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;font-size:13px;color:var(--muted);padding:15px 0;border-top:1px solid var(--line)}.bottom-legend>span{display:flex;align-items:center;gap:7px}.legend-square{display:inline-block;width:10px;height:10px;border-radius:2px;flex-shrink:0}.legend-square.exact{background:var(--teal)}.legend-square.close{background:var(--gold)}.legend-square.wrong{background:#90a0a7}.legend-square.unknown{border:1px dashed #b4c4cb}.direction-legend{margin-left:auto}.data-details{border-top:1px solid var(--line);padding-top:4px}.data-details summary{font-size:13px;color:var(--muted);min-height:40px;display:list-item;align-content:center}.data-note{font-size:13px;line-height:1.9;color:var(--muted);margin:8px 0 12px}.game-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:9px;border-top:1px solid var(--line);padding-top:12px}.game-bottom>span{font-size:13px;color:var(--muted)}.game-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px}footer{display:flex;justify-content:space-between;gap:16px;padding:18px 2px 25px;font-size:13px;color:var(--muted)}
summary{cursor:pointer;list-style-position:inside}summary:hover{color:var(--teal)}.result-panel{border:1px solid #648f78;border-radius:10px;padding:20px;background:#223a30;margin:20px 0}.result-panel.lost{background:#342f24;border-color:#8b7950}.result-panel h3{font-size:22px}.result-song{display:flex;align-items:center;gap:20px;margin:16px 0}.result-song>p{font-size:14px;line-height:1.9;min-width:0}.result-song strong{font-size:22px;overflow-wrap:anywhere}.result-version{color:var(--muted);font-size:13px}.result-links{display:flex;flex-wrap:wrap;gap:8px 16px;margin:14px 0}.result-links a{font-size:14px}.result-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.result-details{border-top:1px solid #5b685d;padding-top:5px}.result-details summary{font-size:14px;padding:8px 0}.result-data{font-size:14px;line-height:1.9;color:#d2ded6;margin-top:8px}
dialog{background:var(--panel);color:var(--text);border:1px solid #638b7a;border-radius:12px;width:min(650px,calc(100% - 24px));max-height:85vh;padding:24px;overflow:auto;box-shadow:0 25px 100px #0008}dialog::backdrop{background:#071116cc}.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:17px}.dialog-head h2{font-size:22px}.dialog-close{flex-shrink:0;width:40px;height:40px;border-radius:7px;background:#2a3c42;color:var(--text);font-size:23px}dialog p{font-size:15px;line-height:1.9;color:#d0dcde;margin-top:12px}dialog ul{padding-left:22px;color:#d0dcde;font-size:15px;line-height:1.85}dialog li{margin:12px 0}.rule-colors{display:flex;flex-wrap:wrap;gap:8px;margin:17px 0}.rule-color{padding:7px 10px;border-radius:6px;font-size:14px}.rule-color.exact{background:#284d40;color:#d1f7e6}.rule-color.close{background:#463e28;color:#ffe4a4}.rule-color.wrong{background:#25343c;color:#e2e9e8}.rule-details,.source-details{border-top:1px solid var(--line);margin-top:12px;padding-top:4px}.rule-details summary,.source-details summary{min-height:44px;align-content:center;font-size:15px}.dialog-note{font-size:13px!important;border-top:1px solid var(--line);padding-top:13px;margin-top:18px!important;color:var(--muted)!important}.source-summary p{font-size:14px}.credits-list{margin-top:18px}.credit-row{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;padding:13px 0;border-top:1px solid var(--line);font-size:15px}.credit-row>span{min-width:0;overflow-wrap:anywhere}.credit-row>a{font-size:14px;flex-shrink:0}.credit-row small{display:block;font-size:13px;color:var(--muted);margin-top:5px}.credit-detail{display:block;font-size:13px;color:var(--muted);line-height:1.8;margin-top:7px}.video-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}.video-links a{font-size:13px}.library-footnote{color:var(--teal)!important;font-size:14px!important}.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}.noscript{text-align:center;padding:30px}
@media(max-width:700px){.shell{padding:0 14px}.play-panel{padding:16px}.topbar{min-height:78px}.direction-legend{margin-left:0;width:100%}.session-heading{padding-top:17px}.song-col{width:170px}.result-song{align-items:flex-start}.cover-result{width:190px}}
@media(max-width:480px){.shell{padding:0 10px}.topbar{min-height:76px;gap:8px}.brand{gap:8px}.brand h1{font-size:22px}.brand-mark{width:32px;height:32px;font-size:20px}.brand-subtitle{font-size:12px}.top-actions{gap:0}.top-actions .text-button{padding:8px;font-size:14px}.play-panel{padding:13px 11px;border-radius:10px}.mode{padding:8px 13px;font-size:14px}.date{font-size:13px}.session-heading h2{font-size:18px}.attempts>strong{font-size:23px}.attempts>span{font-size:13px}.search-line{gap:7px}.search-control input::placeholder{font-size:14px}.primary-button{padding:10px 13px;font-size:14px}.search-symbol{padding-left:10px}.suggestion{gap:9px;padding:11px 7px}.suggestion-title{font-size:14px}.suggestion-year{font-size:12px}.board-top{align-items:flex-start}.board-top>span{max-width:140px;text-align:right;font-size:12px}.song-col{width:160px}.bottom-legend{gap:8px 15px}.game-bottom{align-items:flex-start}.game-actions{margin-left:auto}.result-song{flex-direction:column;gap:14px}.result-song strong{font-size:20px}.result-panel{padding:16px}.result-panel h3{font-size:20px}dialog{padding:18px}.credit-row{gap:9px}footer{font-size:12px;gap:10px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.playback-records{list-style:none;padding:0;margin:12px 0}.playback-records li{padding:10px 0;border-top:1px solid var(--line);font-size:13px;line-height:1.9}.playback-records strong{display:block;color:var(--text);font-weight:500}.playback-records span{display:block}