#kin-clear:before,#fit-clear:before,#pimg-clear:before{content:"";display:inline-block;width:15px;height:15px;margin-right:6px;vertical-align:-2px;background:currentColor;mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M3%206h18M9%206V4h6v2M5%206l1%2014h12l1-14M10%2010v6M14%2010v6%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat;-webkit-mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M3%206h18M9%206V4h6v2M5%206l1%2014h12l1-14M10%2010v6M14%2010v6%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat}#kin-copy:before,#size-calc-copy:before,#size-copy-table:before,.size-table-action button:before,#ascii-copy-char:before,#ascii-copy-info:before,#learn-copy-table:before,[data-verb-copy]:before,#kana-copy-hira:before,#kana-copy-kata:before,#math-copy:before,.history-copy:before,#english-copy-uk:before,#english-copy-us:before,.english-copy:before,#element-copy-symbol:before,#element-copy-info:before,#lit-copy:before,#fit-copy:before,#fit-dialog-copy:before,[data-copy-key]:before,#wubi-copy:before{content:"";display:inline-block;width:15px;height:15px;margin-right:6px;vertical-align:-2px;background:currentColor;mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M9%209h11v11H9zM5%2015H4V4h11v1%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat;-webkit-mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M9%209h11v11H9zM5%2015H4V4h11v1%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat}#lit-reset:before,#rel-reset:before,#learn-reset:before,#know-reset:before{content:"";display:inline-block;width:15px;height:15px;margin-right:6px;vertical-align:-2px;background:currentColor;mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M3%2010a9%209%200%201%201%202%208M3%204v6h6%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat;-webkit-mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M3%2010a9%209%200%201%201%202%208M3%204v6h6%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat}#kin-calculate:before,#lit-replay:before{content:"";display:inline-block;width:15px;height:15px;margin-right:6px;vertical-align:-2px;background:currentColor;mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22m8%205%2011%207-11%207z%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat;-webkit-mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22m8%205%2011%207-11%207z%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat}#wubi-next:before,#fit-example:before,#size-calc-fill:before{content:"";display:inline-block;width:15px;height:15px;margin-right:6px;vertical-align:-2px;background:currentColor;mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M4%2012h16m-6-6%206%206-6%206%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat;-webkit-mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M4%2012h16m-6-6%206%206-6%206%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat}#pimg-cancel:before{content:"";display:inline-block;width:15px;height:15px;margin-right:6px;vertical-align:-2px;background:currentColor;mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M6%206l12%2012M18%206%206%2018%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat;-webkit-mask:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M6%206l12%2012M18%206%206%2018%22%2F%3E%3C%2Fsvg%3E) center/contain no-repeat}@media screen{body:is(.reference-page,.size-page,.learning-page,.knowledge-page,.literacy-page,.fit-page,.relations-page,.tool-pdf-to-image) :is([data-copy],[data-row-copy],[data-verb-copy],[data-ascii-copy],[data-history-copy],[data-english-copy],[data-copy-key],[data-chain],#reference-detail-copy button,#size-copy-main,#size-calc-copy,#size-copy-table,#ascii-copy-char,#ascii-copy-info,#learn-copy-table,#kana-copy-hira,#kana-copy-kata,#math-copy,#english-copy-uk,#english-copy-us,#element-copy-symbol,#element-copy-info,#lit-copy,#fit-copy,#fit-dialog-copy,#kin-copy,#wubi-copy,#kin-undo,#kin-clear,#fit-clear,#pimg-clear,#fit-example,#size-calc-fill,#pimg-demo,#pimg-cancel,.reference-print,#size-print,#learn-print,#know-print,#lit-print,#fit-print,#rel-print,.chart-card-actions button,.lit-card-detail,.fit-row-action button,#lit-reset,#rel-reset,#learn-reset,#know-reset,#reference-show-all,#size-show-all){color:#737b78!important;font-weight:400;font-size:12px!important}body:is(.reference-page,.size-page,.learning-page,.knowledge-page,.literacy-page,.fit-page,.relations-page,.tool-pdf-to-image) :is([data-copy],[data-row-copy],[data-verb-copy],[data-ascii-copy],[data-history-copy],[data-english-copy],[data-copy-key],[data-chain],#reference-detail-copy button,#size-copy-main,#size-calc-copy,#size-copy-table,#ascii-copy-char,#ascii-copy-info,#learn-copy-table,#kana-copy-hira,#kana-copy-kata,#math-copy,#english-copy-uk,#english-copy-us,#element-copy-symbol,#element-copy-info,#lit-copy,#fit-copy,#fit-dialog-copy,#kin-copy,#wubi-copy,#kin-undo,#kin-clear,#fit-clear,#pimg-clear,#fit-example,#size-calc-fill,#pimg-demo,#pimg-cancel,.reference-print,#size-print,#learn-print,#know-print,#lit-print,#fit-print,#rel-print,.chart-card-actions button,.lit-card-detail,.fit-row-action button,#lit-reset,#rel-reset,#learn-reset,#know-reset,#reference-show-all,#size-show-all):hover:not(:disabled),body:is(.reference-page,.size-page,.learning-page,.knowledge-page,.literacy-page,.fit-page,.relations-page,.tool-pdf-to-image) :is([data-copy],[data-row-copy],[data-verb-copy],[data-ascii-copy],[data-history-copy],[data-english-copy],[data-copy-key],[data-chain],#reference-detail-copy button,#size-copy-main,#size-calc-copy,#size-copy-table,#ascii-copy-char,#ascii-copy-info,#learn-copy-table,#kana-copy-hira,#kana-copy-kata,#math-copy,#english-copy-uk,#english-copy-us,#element-copy-symbol,#element-copy-info,#lit-copy,#fit-copy,#fit-dialog-copy,#kin-copy,#wubi-copy,#kin-undo,#kin-clear,#fit-clear,#pimg-clear,#fit-example,#size-calc-fill,#pimg-demo,#pimg-cancel,.reference-print,#size-print,#learn-print,#know-print,#lit-print,#fit-print,#rel-print,.chart-card-actions button,.lit-card-detail,.fit-row-action button,#lit-reset,#rel-reset,#learn-reset,#know-reset,#reference-show-all,#size-show-all):focus-visible{color:#4f5853!important}body:is(.reference-page,.size-page,.learning-page,.knowledge-page,.literacy-page,.fit-page,.relations-page,.tool-pdf-to-image) :is(#fit-dialog-copy,#wubi-copy,#element-copy-symbol,#element-copy-info,#reference-detail-copy button,#pimg-cancel){background:#f5f6f5;border-color:#dce1de;box-shadow:none}body:is(.reference-page,.size-page,.learning-page,.knowledge-page,.literacy-page,.fit-page,.relations-page,.tool-pdf-to-image) :is(#fit-dialog-copy,#wubi-copy,#element-copy-symbol,#element-copy-info,#reference-detail-copy button,#pimg-cancel):hover:not(:disabled){background:#ecefec}}@media screen{body:is(.reference-page,.size-page,.learning-page,.knowledge-page,.literacy-page,.fit-page,.relations-page,.tool-pdf-to-image) :is([data-copy],[data-row-copy],[data-verb-copy],[data-ascii-copy],[data-history-copy],[data-english-copy],[data-copy-key],[data-chain],#reference-detail-copy button,#size-copy-main,#size-calc-copy,#size-copy-table,#ascii-copy-char,#ascii-copy-info,#learn-copy-table,#kana-copy-hira,#kana-copy-kata,#math-copy,#english-copy-uk,#english-copy-us,#element-copy-symbol,#element-copy-info,#lit-copy,#fit-copy,#fit-dialog-copy,#kin-copy,#wubi-copy,#kin-undo,#kin-clear,#fit-clear,#pimg-clear,#fit-example,#size-calc-fill,#pimg-demo,#pimg-cancel,.reference-print,#size-print,#learn-print,#know-print,#lit-print,#fit-print,#rel-print,.chart-card-actions button,.lit-card-detail,.fit-row-action button,#lit-reset,#rel-reset,#learn-reset,#know-reset,#reference-show-all,#size-show-all):before{width:12px;height:12px;margin-right:4px;vertical-align:-1px}body:is(.reference-page,.size-page,.learning-page,.knowledge-page,.literacy-page,.fit-page,.relations-page,.tool-pdf-to-image) :is([data-copy],[data-row-copy],[data-verb-copy],[data-ascii-copy],[data-history-copy],[data-english-copy],[data-copy-key],[data-chain],#reference-detail-copy button,#size-copy-main,#size-calc-copy,#size-copy-table,#ascii-copy-char,#ascii-copy-info,#learn-copy-table,#kana-copy-hira,#kana-copy-kata,#math-copy,#english-copy-uk,#english-copy-us,#element-copy-symbol,#element-copy-info,#lit-copy,#fit-copy,#fit-dialog-copy,#kin-copy,#wubi-copy,#kin-undo,#kin-clear,#fit-clear,#pimg-clear,#fit-example,#size-calc-fill,#pimg-demo,#pimg-cancel,.reference-print,#size-print,#learn-print,#know-print,#lit-print,#fit-print,#rel-print,.chart-card-actions button,.lit-card-detail,.fit-row-action button,#lit-reset,#rel-reset,#learn-reset,#know-reset,#reference-show-all,#size-show-all) svg{width:12px;height:12px;flex-shrink:0}body.tool-pdf-to-image #pimg-clear{gap:4px;white-space:nowrap}body.tool-pdf-to-image #pimg-clear:before{margin-right:0!important;flex-shrink:0}}@media screen{body.kin-page.kin-page :is(#kin-undo,#kin-clear),body.fit-page.fit-page :is(#fit-example,#fit-clear){font-size:13px!important;display:inline-flex;align-items:center;gap:4px}body.kin-page.kin-page #kin-clear:before,body.fit-page.fit-page :is(#fit-example,#fit-clear):before{width:13px;height:13px;margin-right:0!important;vertical-align:middle;flex-shrink:0}}.knowledge-page{--know-ink:#294c3b;--know-muted:#899990;--know-line:#dce7df;color:var(--know-ink)}.knowledge-page h1,.knowledge-page h2,.knowledge-page h3{font-weight:650}.knowledge-page .tool-main,.knowledge-page .tool-header{max-width:1400px}.knowledge-page .tool-main{padding-top:0}.knowledge-page [hidden]{display:none!important}.know-hero{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:30px 0}.know-hero h1{font-size:32px;letter-spacing:1px;margin:0 0 12px}.know-hero p{font-size:14px;color:var(--know-muted);line-height:1.8;margin:0}.know-seal{font-size:30px;color:#709784;white-space:nowrap;text-align:center;min-width:145px;font-family:Georgia,serif}.know-seal small{display:block;font-size:10px;letter-spacing:2px;margin-top:10px;font-family:inherit;color:var(--know-muted)}.know-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:0 0 20px}.knowledge-page button{cursor:pointer}.knowledge-page button:disabled{cursor:default;opacity:.45}.know-toolbar button,.know-actions button,.history-copy,.english-copy,.multiply-focus button,.english-date-results button,.know-empty button{border:1px solid var(--know-line);border-radius:10px;background:#ffffffb8;padding:9px 15px;font-size:13px;color:#426350}.know-toolbar button:hover,.know-actions button:hover{background:#e7f2ea}.know-toolbar .know-print{margin-left:auto;background:transparent}.know-search{display:flex;gap:10px;align-items:center;background:#ffffffc7;border:1px solid var(--know-line);border-radius:12px;padding:0 14px;flex:1;max-width:570px;color:#6f8679;min-height:44px}.know-search input{width:100%;background:transparent;border:0;outline:0;font-size:14px;box-shadow:none!important;min-width:0;height:42px;color:var(--know-ink)}.know-search button{border:0;padding:3px;font-size:20px;background:transparent}.know-segment{display:flex;padding:4px;background:#e7efe9;border-radius:12px;gap:3px}.know-segment button{border:0;background:transparent}.know-segment button[aria-pressed=true]{background:#fff;color:#277151;box-shadow:0 3px 12px #27483112}.know-section-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:0 0 18px}.know-section-head h2{font-size:16px;margin:0}.know-section-head p{margin:0;color:var(--know-muted);font-size:13px}.know-scroll{overflow-x:auto;position:relative;scrollbar-width:thin;padding-bottom:4px}.know-mobile-hint{display:none;color:var(--know-muted);font-size:12px;margin:0 0 12px}.know-hint,.know-print-note{font-size:13px;color:var(--know-muted);line-height:1.8;margin:16px 0}.know-actions{display:flex;gap:10px;flex-wrap:wrap}.know-empty{text-align:center;border:1px dashed var(--know-line);border-radius:16px;padding:40px;margin:20px 0}.know-empty p{color:var(--know-muted);font-size:14px}.know-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:38px;margin:35px 0}.know-notes article{max-width:400px}.know-notes article>span{font-size:11px;color:var(--know-muted);float:left;margin:4px 10px 0 0}.know-notes h3{font-size:14px;color:#60806b;margin:0 0 10px}.know-notes p{font-size:13px;color:var(--know-muted);line-height:1.9;margin:0}.know-sources{border-top:1px solid var(--know-line);padding-top:18px;font-size:13px;color:var(--know-muted);line-height:1.9}.know-sources summary{cursor:pointer;color:#658170}.know-sources a{color:#587c66}.is-error{color:#b44f50!important}.knowledge-page :focus-visible{outline:2px solid #528469;outline-offset:3px}.knowledge-page .know-search input:focus-visible{outline:0}.multiply-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:22px;align-items:start}.multiply-board{background:#ffffffb8;border:1px solid var(--know-line);border-radius:22px;padding:24px;box-shadow:0 12px 40px #33533d06}.multiply-grid{display:grid;grid-template-columns:repeat(9,minmax(76px,1fr));gap:7px;min-width:740px}.multiply-cell{background:#eff5f0;border:1px solid #e1eae3;min-height:66px;border-radius:9px;padding:9px 3px;text-align:center;display:flex;flex-direction:column;justify-content:center;gap:5px;font-size:13px;cursor:pointer;transition:background .15s,box-shadow .15s}.multiply-cell small{font-size:12px;color:#819188}.multiply-cell strong{color:#277151;font-size:15px}.math-upper{visibility:hidden}.knowledge-ready[data-view=square] .math-upper{visibility:visible}.multiply-cell:nth-child(18n+1),.multiply-cell:nth-child(18n+2),.multiply-cell:nth-child(18n+3){background:#f4f3f8}.multiply-cell.is-related{background:#e3eee5}.multiply-cell.is-selected,.multiply-cell:hover{background:#d7e9dc;box-shadow:inset 0 0 0 1px #6e9a7b}.multiply-aside{display:flex;flex-direction:column;gap:18px}.multiply-focus{padding:24px;border:1px solid var(--know-line);border-radius:22px;background:linear-gradient(140deg,#e1eee3,#f7faf7);text-align:center}.multiply-focus>span{font-size:12px;letter-spacing:2px;color:#789382}.multiply-focus>strong{display:block;font-size:26px;margin-top:14px;white-space:nowrap}.multiply-focus>p{font-size:16px;letter-spacing:3px;margin:9px 0 16px}.multiply-dots{display:grid;grid-template-columns:repeat(6,1fr);gap:5px;max-width:145px;margin:0 auto 16px}.multiply-dots i{width:8px;height:8px;border-radius:50%;background:#7aa28a;margin:auto}.multiply-focus>small{display:block;font-size:12px;color:#789382}.multiply-focus button{margin-top:16px}.multiply-calculator{background:#ffffffa8;border:1px solid var(--know-line);border-radius:20px;padding:22px}.multiply-calculator h2{font-size:16px;margin:0}.multiply-calculator p{font-size:12px;color:var(--know-muted);margin:8px 0 18px}.multiply-inputs{display:flex;gap:9px;align-items:flex-end}.multiply-inputs label{min-width:0;flex:1}.multiply-inputs label span{display:block;font-size:12px;margin-bottom:7px;color:#789382}.multiply-inputs input{width:100%;box-sizing:border-box;border:1px solid #cfdfd4;border-radius:9px;padding:9px 10px;background:#fff;font-size:16px;color:var(--know-ink)}.multiply-inputs b{height:41px;display:grid;place-items:center;font-weight:400}.multiply-result{margin:20px 0}.multiply-result small{display:block;font-size:12px;color:var(--know-muted)}.multiply-result output{display:block;font-size:25px;font-weight:600;overflow-wrap:anywhere;margin-top:5px;line-height:1.5}.multiply-result output.is-error{font-size:13px}.multiply-calculator .know-actions button{font-size:12px;padding:8px 12px}.history-index{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:20px}.history-index a{font-size:13px;padding:9px 16px;background:#fff9;border-radius:30px;color:#5e7a68;border:1px solid #dce7df}.history-intro{display:flex;align-items:center;flex-wrap:wrap;gap:10px 25px;background:linear-gradient(90deg,#e4eee5,#f3f0f7);padding:20px 24px;border-radius:15px;margin-bottom:30px}.history-intro strong{font-size:15px}.history-intro p{flex:1;min-width:240px;font-size:13px;color:#708775;margin:0;line-height:1.8}.history-intro>span{font-size:12px;color:#789382}.history-era{display:grid;grid-template-columns:195px minmax(0,1fr);gap:28px;margin-bottom:24px;scroll-margin-top:20px}.history-era-head{padding:20px 0;display:flex;gap:15px;align-items:flex-start;border-top:1px solid #cadaCF}.history-era-head>span{font-size:12px;color:#91a998;font-family:Georgia,serif}.history-era-head h2{font-size:18px;margin:0 0 10px}.history-era-head p{font-size:13px;line-height:1.8;color:var(--know-muted);margin:0}.history-rows{border:1px solid var(--know-line);border-radius:18px;overflow:hidden;background:#ffffffb8}.history-row{display:grid;grid-template-columns:195px minmax(0,1fr) 45px;gap:25px;padding:23px 25px;border-bottom:1px solid var(--know-line)}.history-row:last-child{border:0}.history-name h3{font-size:17px;margin:0 0 10px;color:#31563f}.history-name>span{font-size:13px;color:#7d8e81}.history-details p{font-size:14px;margin:0 0 7px;line-height:1.65}.history-details p>span{font-size:12px;color:#92a095;margin-right:16px;display:inline-block;min-width:65px}.history-details .history-note{font-size:13px;color:var(--know-muted);margin:12px 0 0}.history-copy{padding:3px 0;background:transparent;border:0;align-self:start;font-size:12px;color:#7e9485}.element-filters{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 22px}.element-filters button{border:1px solid transparent;padding:7px 11px;border-radius:8px;background:#fff8;color:#5a6f63;font-size:12px;display:flex;gap:6px;align-items:center}.element-filters button[aria-pressed=true]{border-color:#739681;background:#fff}.element-category i{width:8px;height:8px;border-radius:3px;background:var(--cell-accent)}.cat-hydrogen{--cell-bg:#e9e8f5;--cell-accent:#a195c1}.cat-alkali{--cell-bg:#f9e6df;--cell-accent:#d3a08b}.cat-earth{--cell-bg:#f5edcd;--cell-accent:#c3ad5e}.cat-transition{--cell-bg:#e6eff5;--cell-accent:#80abc2}.cat-main{--cell-bg:#e4eee2;--cell-accent:#83a878}.cat-halogen{--cell-bg:#e0f0eb;--cell-accent:#76ae9d}.cat-noble{--cell-bg:#eee4f4;--cell-accent:#b199c0}.cat-lanth{--cell-bg:#f4e6ed;--cell-accent:#bb94a8}.cat-act{--cell-bg:#efe9db;--cell-accent:#b6a780}.element-scroll{border:1px solid var(--know-line);padding:20px;background:#ffffff8f;border-radius:20px}.element-grid{display:grid;grid-template-columns:22px repeat(18,minmax(53px,1fr));grid-template-rows:20px repeat(7,100px) 15px repeat(2,100px);gap:5px;min-width:1070px}.element-axis{font-size:11px;color:#859a8c;display:grid;place-items:center}.element-table-caption{grid-column:4/14;grid-row:2/4;align-self:center;justify-self:center;display:flex;gap:20px;flex-wrap:wrap;align-items:center;max-width:380px;color:#74927e}.element-table-caption>strong{font:52px Georgia,serif;color:#9cb5a4}.element-table-caption>span{font-size:14px;line-height:1.9}.element-table-caption small{font-size:12px;color:#899990}.element-cell{background:var(--cell-bg);border:1px solid color-mix(in srgb,var(--cell-accent) 35%,transparent);border-top:3px solid var(--cell-accent);border-radius:7px;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;cursor:pointer;color:#354e41;transition:opacity .15s,transform .15s,box-shadow .15s;min-width:0}.element-cell>small{align-self:flex-start;padding:0 7px;font-size:10px;color:#6f8178}.element-cell>strong{font-size:21px;line-height:1.2;font-weight:650}.element-cell>span:not(.element-english):not(.element-list-position){font-size:14px;margin:3px 0}.element-cell>em{font-size:10px;font-style:normal;color:#6d8074;line-height:1.4;white-space:nowrap}.element-cell:hover{transform:translateY(-2px);box-shadow:0 5px 10px #23453520;z-index:1}.element-cell.is-dimmed{opacity:.2}.element-placeholder{display:grid;place-items:center;text-align:center;border-radius:7px;background:var(--cell-bg);font-size:11px;line-height:1.8;color:#718476}.element-series-label{grid-column:1/4;align-self:center;justify-self:end;margin-right:12px;font-size:13px;color:#899990}.element-english,.element-list-position{display:none}.knowledge-ready[data-view=list] .element-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:none;min-width:0;gap:10px}.knowledge-ready[data-view=list] .element-cell{grid-column:auto!important;grid-row:auto!important;min-height:135px;padding:12px}.knowledge-ready[data-view=list] .element-cell.is-dimmed,.knowledge-ready[data-view=list] .element-axis,.knowledge-ready[data-view=list] .element-placeholder,.knowledge-ready[data-view=list] .element-table-caption,.knowledge-ready[data-view=list] .element-series-label{display:none}.knowledge-ready[data-view=list] .element-english,.knowledge-ready[data-view=list] .element-list-position{display:block;font-size:12px;color:#768b7c;margin-top:5px}.knowledge-ready[data-view=list] .element-cell>strong{font-size:24px}.element-dialog{width:430px;max-width:calc(100vw - 44px);padding:32px;border:1px solid #dce7df;border-radius:24px;color:#31513d;box-sizing:border-box;background:#fcfefc;box-shadow:0 30px 90px #112c2533}.element-dialog::backdrop{background:#17352855;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}#element-close{float:right;background:transparent;border:0;font-size:26px;color:#7e9286}#element-detail-number{font-size:13px;color:#899990}.element-dialog h3{font-size:38px;line-height:1.3;margin:24px 0 8px}.element-dialog>p{color:#899990;font-size:13px;line-height:1.8}.element-dialog dl{border-block:1px solid var(--know-line);padding:12px 0;margin:25px 0}.element-dialog dl>div{margin:10px 0}.element-dialog dt{font-size:12px;color:#899990}.element-dialog dd{font-size:16px;margin:6px 0 0}.english-date-banner{display:flex;align-items:center;justify-content:space-between;gap:24px;background:linear-gradient(115deg,#e0eee3,#f0ecf7);border:1px solid #dae5de;border-radius:20px;padding:25px 30px}.english-date-banner>div>span{font-size:12px;color:#839787;letter-spacing:2px}.english-date-banner strong{display:block;font-size:28px;font-family:Georgia,serif;margin:9px 0 6px}.english-date-banner p{font-size:13px;color:#899990;margin:0}.english-date-banner form{min-width:280px}.english-date-banner form>div{display:flex;gap:8px;margin:7px 0}.english-date-banner label{font-size:12px;color:#789080}.english-date-banner input{background:#fff;border:1px solid #d3dfd6;border-radius:9px;padding:10px 13px;font-size:15px;width:170px;color:#31513e}.english-date-banner button{background:#3e7a5a;color:#fff;border:0;border-radius:9px;padding:10px 15px;font-size:13px}.english-date-banner small{font-size:12px;color:#899990}.english-date-results{display:grid;grid-template-columns:1fr 1fr;gap:12px 30px;padding:22px 5px 0}.english-date-results>div{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.english-date-results span{font-size:12px;color:#899990}.english-date-results strong{font-size:15px;font-weight:500}.english-date-results button{padding:4px 8px;font-size:12px;border:0;background:transparent;color:#718d79}.english-date-results p{font-size:12px;color:#899990;margin:0;grid-column:1/-1}.english-index{display:flex;justify-content:space-between;align-items:center;gap:15px;margin:32px 0 25px}.english-index nav{display:flex;gap:20px}.english-index a{font-size:14px;color:#587862}.english-index>span{font-size:12px;color:#899990}.english-section{margin-bottom:30px;scroll-margin-top:20px}.english-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.english-card{background:#ffffffc9;border:1px solid var(--know-line);border-radius:16px;padding:20px 22px;cursor:pointer;transition:box-shadow .15s,border-color .15s;position:relative}.english-card:hover{box-shadow:0 10px 24px #335d3c10;border-color:#a8c5b0}.english-card-top,.english-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px}.english-card-top>span{font-size:14px;font-weight:600}.english-card-top>small{font-size:11px;letter-spacing:1px;color:#a1b0a6}.english-card>strong{display:block;font-size:25px;letter-spacing:.2px;font-family:Georgia,serif;font-weight:500;margin:18px 0 8px}.english-ipa{font-size:14px;color:#87998d;display:block;min-height:22px}.english-card-bottom{border-top:1px solid #e9eee9;margin-top:15px;padding-top:12px}.english-card-bottom>span{font-size:14px;color:#54795f}.english-card-bottom>small{font-size:12px;color:#899990}.english-copy{position:absolute;top:14px;right:18px;padding:3px 5px;font-size:11px;background:transparent;border:0;color:#7d9685;opacity:0}.english-card:hover .english-copy,.english-card:focus-within .english-copy{opacity:1}.english-card:hover .english-card-top>small,.english-card:focus-within .english-card-top>small{visibility:hidden}.english-mask{display:block;height:75px;padding-top:24px;box-sizing:border-box;font-size:14px;color:#a1aea5}.weekday-cards{grid-template-columns:repeat(7,minmax(0,1fr))}.weekday-cards .english-card{padding:19px 15px}.weekday-cards .english-card>strong{font-size:20px}.weekday-cards .english-card-top>small{font-size:8px;letter-spacing:0}.weekday-cards .english-card:nth-last-child(-n+2){background:#f1edf5bd}@media(max-width:1150px){.multiply-layout{grid-template-columns:minmax(0,1fr)}.multiply-aside{display:grid;grid-template-columns:1fr 1fr}.multiply-dots{display:none}.weekday-cards{grid-template-columns:repeat(4,minmax(0,1fr))}.history-era{grid-template-columns:160px minmax(0,1fr);gap:18px}.history-row{grid-template-columns:150px minmax(0,1fr) 28px;gap:15px}.know-mobile-hint{display:block}.english-date-results{grid-template-columns:1fr}}@media(max-width:700px){.know-hero{padding:24px 0;gap:10px}.know-hero h1{font-size:26px;line-height:1.5}.know-hero p{font-size:13px}.know-seal{display:none}.know-toolbar{gap:8px}.know-search{flex-basis:100%;max-width:none}.know-toolbar button{font-size:12px;padding:8px 11px}.know-section-head{align-items:flex-start;flex-direction:column;gap:8px}.know-section-head p{font-size:12px}.multiply-board{padding:17px 14px}.multiply-grid{min-width:720px}.multiply-aside{grid-template-columns:1fr}.multiply-focus{display:none}.know-notes{grid-template-columns:1fr;gap:24px}.know-notes article{max-width:none}.history-intro{padding:18px}.history-intro p{min-width:0;flex-basis:100%}.history-era{display:block}.history-era-head{padding:18px 0 12px}.history-era-head p{font-size:12px}.history-row{padding:20px 17px;grid-template-columns:1fr 35px;gap:12px}.history-name{grid-column:1;display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 18px}.history-name h3{margin:0}.history-details{grid-column:1/-1;grid-row:2}.history-copy{grid-row:1;grid-column:2}.history-index{gap:6px}.history-index a{font-size:12px;padding:8px 12px}.element-scroll{padding:12px;border-radius:14px}.knowledge-ready[data-view=list] .element-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.element-filters{gap:4px}.element-filters button{font-size:11px;padding:6px 8px}.english-date-banner{flex-direction:column;align-items:stretch;padding:22px}.english-date-banner strong{font-size:25px}.english-date-banner form{min-width:0}.english-date-banner input{min-width:0;flex:1;width:100%}.english-date-banner form>div{gap:6px}.english-date-banner button{white-space:nowrap}.english-date-results{padding:18px 0 0}.english-date-results>div{gap:8px}.english-date-results strong{font-size:14px}.english-index{align-items:flex-start;flex-direction:column}.english-cards,.weekday-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.english-card,.weekday-cards .english-card{padding:17px 13px}.english-card>strong,.weekday-cards .english-card>strong{font-size:22px;overflow-wrap:anywhere}.english-ipa{font-size:12px}.english-copy{display:none}.english-card-top>small{font-size:10px}.know-print-note{font-size:12px}}@media(max-width:700px){.multiply-focus{display:block;padding:18px}.multiply-focus>strong{font-size:24px}.multiply-focus>p{margin-bottom:8px}.multiply-focus button{margin-top:10px}}@media print{html:has(.knowledge-page){background:#fff!important}.knowledge-page .history-era-head p,.knowledge-page .history-name>span,.knowledge-page .history-details .history-note,.knowledge-page .history-details p>span,.knowledge-page .english-ipa,.knowledge-page .english-card-bottom>small{color:#5a6f63!important}@page{size:A4 portrait;margin:12mm}.knowledge-page{background:#fff!important;color:#233c2c!important}.tool-ambient,.tool-header,.tool-footer,.related-tools,.know-toolbar,.know-notes,.know-sources,.know-print-note,.know-mobile-hint,.know-hint,.know-empty,.multiply-aside,.history-index,.history-copy,.english-date-banner,.english-date-results,.english-index,.english-copy,.element-filters,#tool-toast,dialog{display:none!important}.knowledge-page .tool-main{padding:0!important;margin:0!important;max-width:none!important;width:100%!important}.know-hero{padding:0 0 12px!important}.know-hero h1{font-size:22px!important}.know-hero p{font-size:10px!important}.know-seal{display:none!important}.know-section-head{margin-bottom:10px;flex-direction:row}.know-section-head h2{font-size:13px}.know-section-head p{display:none}.know-scroll{overflow:visible!important;padding:0;border:0;border-radius:0}.multiply-layout{display:block}.multiply-board{padding:10px;box-shadow:none;border-radius:0}.multiply-grid{min-width:0;grid-template-columns:repeat(9,1fr);gap:3px}.multiply-cell{min-height:55px;border-radius:3px;font-size:10px;padding:2px}.multiply-cell strong{font-size:12px}.multiply-cell small{font-size:9px}.math-upper{visibility:hidden!important}.multiply-cell{background:#eff5f0!important;box-shadow:none!important}.knowledge-page .math-answer[hidden],.knowledge-page .math-rhyme[hidden]{display:inline!important}.knowledge-page .math-mask{display:none!important}.history-intro{display:none}.knowledge-page .history-era[hidden],.knowledge-page .history-row[hidden]{display:grid!important}.history-era{display:block!important;break-inside:auto;margin-bottom:15px}.history-era-head{padding:10px 0;break-after:avoid}.history-era-head h2{font-size:15px}.history-era-head p{font-size:10px}.history-rows{border-radius:0;overflow:visible}.history-row{break-inside:avoid;grid-template-columns:150px 1fr!important;padding:11px 15px;gap:15px}.history-name{display:block}.history-name h3{font-size:12px}.history-name>span{font-size:10px}.history-details{grid-column:2;grid-row:auto}.history-details p{font-size:10px}.history-details .history-note{font-size:9px;margin-top:5px}.history-details p>span{font-size:9px;min-width:48px;margin-right:8px}.element-grid,.knowledge-ready[data-view=list] .element-grid{display:grid;min-width:0;grid-template-columns:13px repeat(18,minmax(0,1fr));grid-template-rows:12px repeat(7,62px) 8px repeat(2,62px);gap:2px}.knowledge-ready[data-view=list] .element-cell{grid-column:var(--print-col)!important;grid-row:var(--print-row)!important}.element-cell,.knowledge-ready[data-view=list] .element-cell{display:flex!important;min-height:0;padding:1px;border-radius:3px;opacity:1!important;box-shadow:none;transform:none;print-color-adjust:exact;-webkit-print-color-adjust:exact}.element-cell>small{font-size:7px;padding:0 3px}.element-cell>strong,.knowledge-ready[data-view=list] .element-cell>strong{font-size:14px}.element-cell>span:not(.element-english):not(.element-list-position){font-size:10px;margin:1px 0}.element-cell>em{font-size:7px}.element-english,.element-list-position,.knowledge-ready[data-view=list] .element-english,.knowledge-ready[data-view=list] .element-list-position{display:none}.element-axis,.knowledge-ready[data-view=list] .element-axis,.element-placeholder,.knowledge-ready[data-view=list] .element-placeholder{display:grid;font-size:8px}.element-series-label,.knowledge-ready[data-view=list] .element-series-label{display:block;font-size:9px}.element-table-caption,.knowledge-ready[data-view=list] .element-table-caption{display:flex;max-width:210px;gap:10px}.element-table-caption>strong{font-size:28px}.element-table-caption>span{font-size:9px}.element-table-caption small{font-size:8px}.element-grid{break-inside:avoid}.knowledge-page .english-section[hidden],.knowledge-page .english-card[hidden]{display:block!important}.english-section{margin-bottom:18px}.english-cards,.weekday-cards{grid-template-columns:repeat(4,1fr);gap:6px}.english-card,.weekday-cards .english-card{padding:12px;border-radius:6px;break-inside:avoid;box-shadow:none}.english-card>strong,.weekday-cards .english-card>strong{font-size:19px;margin:10px 0 5px}.english-card-top>span{font-size:11px}.english-card-top>small{font-size:8px!important;visibility:visible!important}.english-ipa{font-size:10px}.english-card-bottom{margin-top:7px;padding-top:7px}.english-card-bottom>span,.english-card-bottom>small{font-size:10px}.knowledge-page .english-answer[hidden]{display:block!important}.knowledge-page .english-mask{display:none!important}}.math-heading-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px}.math-heading-actions #math-font{white-space:nowrap;border:1px solid #dce7df;border-radius:8px;background:#fff9;padding:5px 10px;font-size:12px;color:#527961}.math-heading-actions #math-font[aria-pressed=true]{background:#e1eee5;border-color:#aac7b4}@media screen{.math-large .multiply-grid{grid-template-columns:repeat(9,minmax(100px,1fr));min-width:960px}.math-large .multiply-cell{font-size:17px;min-height:82px;gap:7px}.math-large .multiply-cell strong{font-size:20px}.math-large .multiply-cell small{font-size:15px}}@media print{.math-heading-actions,.layui-laydate{display:none!important}}@media screen{.knowledge-page .know-toolbar button,.knowledge-page .know-actions button,.knowledge-page .history-copy,.knowledge-page .english-copy,.knowledge-page .multiply-focus button,.knowledge-page .english-date-results button,.knowledge-page .element-filters button{font-size:14px;color:#41634c}.knowledge-page .multiply-cell small{font-size:14px;color:#4d6556}.knowledge-page .multiply-inputs label span,.knowledge-page .multiply-result small,.knowledge-page .multiply-focus>small,.knowledge-page .multiply-calculator p{font-size:14px;color:#4d6556}.knowledge-page .history-name>span,.knowledge-page .history-details p>span,.knowledge-page .history-details .history-note,.knowledge-page .history-intro p,.knowledge-page .history-era-head p{font-size:14px;color:#4d6556}.knowledge-page .element-cell>small,.knowledge-page .element-cell>em{font-size:12px;color:#4d6556}.knowledge-page .element-axis,.knowledge-page .element-placeholder{font-size:12px;color:#4d6556}.knowledge-page .element-series-label,.knowledge-page .element-dialog dt,.knowledge-page .element-dialog>p,.knowledge-page #element-detail-number{font-size:14px;color:#4d6556}.knowledge-page .english-ipa,.knowledge-page .english-card-bottom>small,.knowledge-page .english-date-banner label,.knowledge-page .english-date-banner small,.knowledge-page .english-date-results span,.knowledge-page .english-date-results p{font-size:14px;color:#4d6556}.knowledge-page .english-card-top>small{font-size:12px;color:#5a6f63}.knowledge-page .english-date-banner button{font-size:14px}.knowledge-page .english-mask{color:#5a6f63}.knowledge-page .element-cell{min-width:0}.knowledge-page .multiply-grid{grid-template-columns:repeat(9,minmax(86px,1fr));min-width:830px}.knowledge-page .math-large .multiply-grid{grid-template-columns:repeat(9,minmax(100px,1fr));min-width:960px}.knowledge-page .math-large .multiply-cell small{font-size:15px}.knowledge-page .history-row{grid-template-columns:195px minmax(0,1fr) 62px}.knowledge-page .history-copy{white-space:nowrap}.knowledge-page .english-date-banner input{transition:none}}@media screen and (max-width:1150px){.knowledge-page .history-row{grid-template-columns:150px minmax(0,1fr) 62px}}@media screen and (max-width:700px){.knowledge-page .history-row{grid-template-columns:1fr 62px}}@media screen{.knowledge-page .multiply-calculator .know-actions button[type=submit]{background:#fff;border:1px solid #d5e1d8;color:#426350;font-size:13px;min-width:80px;max-width:100%;padding:8px 20px;border-radius:9px}.knowledge-page .multiply-calculator .know-actions button[type=submit]:hover{background:#f4f8f3;border-color:#b9ccbf}}