:root{color-scheme:light;--ink:#152744;--muted:#5d6c83;--blue:#2456d4;--blue-dark:#1643b4;--line:#dce4ef;--bg:#f5f7fb;--paper:#fff;--radius:12px;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{opacity:.48;cursor:not-allowed}button,input,select,textarea,a{-webkit-tap-highlight-color:transparent}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #8cabf6;outline-offset:3px}input,select,textarea{width:100%;min-height:44px;border:1px solid #c8d3e3;border-radius:8px;background:#fff;padding:10px 12px;font-size:16px}textarea{resize:vertical;line-height:1.7}h1,h2,h3,p{margin:0}h1,h2{font-size:21px;line-height:1.5;letter-spacing:-.02em}h3{font-size:16px}code,.timecode,#subtitle-input,#subtitle-output,.time-summary{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Hiragino Kaku Gothic ProN",Meiryo,monospace;font-variant-numeric:tabular-nums}code{font-size:.92em;background:#f0f4fa;border-radius:4px;padding:1px 4px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:43px;padding:9px 15px;background:white;border:1px solid var(--line);border-radius:8px;color:var(--ink);font-size:14px;font-weight:650;white-space:nowrap}.button:hover:not(:disabled){background:#eff3fa}.button.primary{background:var(--blue);border-color:var(--blue);color:#fff}.button.primary:hover:not(:disabled){background:var(--blue-dark)}.text-button{border:0;background:none;color:var(--blue-dark);font-size:14px;min-height:34px;padding:4px 0}.text-button:hover{text-decoration:underline}.text-button.muted{color:var(--muted)}.app-header{display:flex;justify-content:space-between;align-items:center;gap:20px;background:white;border-bottom:1px solid var(--line);padding:18px max(25px,calc((100vw - 1280px)/2))}.brand{display:flex;gap:11px;align-items:center;font-size:23px;font-weight:750;letter-spacing:-.035em;line-height:1.4}.brand img{flex:none}.brand p{font-size:12px;font-weight:450;letter-spacing:0;color:var(--muted);margin-top:4px}.beta{display:inline-block;font-size:12px;border:1px solid #c8d8fa;padding:1px 6px;border-radius:5px;color:var(--blue);font-weight:550;letter-spacing:0;vertical-align:middle}.privacy-label{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:20px;padding:5px 11px;white-space:nowrap}main{max-width:1330px;margin:auto;padding:23px 25px 28px}.input-workspace{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:22px;align-items:start}.card{background:white;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 23px 16px}.source-bar{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;padding:0 23px 12px;font-size:12px;color:var(--muted)}#source-name{overflow-wrap:anywhere}#input-size{white-space:nowrap;font-variant-numeric:tabular-nums}#subtitle-input{display:block;width:calc(100% - 46px);margin:0 23px;min-height:340px;font-size:16px;background:#fcfdff;tab-size:2;overflow-wrap:normal;white-space:pre-wrap}#subtitle-input::placeholder{color:#8491a8}.input-actions{display:flex;gap:17px;align-items:center;padding:9px 23px 12px;flex-wrap:wrap}.input-actions .muted{margin-left:auto}.input-note{padding:16px 23px 20px;border-top:1px solid var(--line);background:#fafcff}.input-note strong{font-size:14px}.input-note p{font-size:14px;line-height:1.8;color:var(--muted);margin-top:5px}.settings-card{padding:22px}.settings-card h2{font-size:19px}.field{margin-top:20px}.field label{font-size:14px;font-weight:650;display:block;margin-bottom:8px}.hint{font-size:14px;color:var(--muted);margin-top:7px;line-height:1.8}.unit-input{position:relative}.unit-input input{padding-right:42px;font-variant-numeric:tabular-nums}.unit-input span{position:absolute;right:12px;top:12px;font-size:12px;color:var(--muted)}.range-note{padding:13px 14px;background:#f1f5fc;border:1px solid #dce6f6;border-radius:8px;font-size:14px;color:#4d6488;line-height:1.8;margin-top:20px}#check-subtitles{width:100%;margin-top:21px;min-height:47px;font-size:16px}.input-state{font-size:12px;line-height:1.8;color:var(--muted);margin-top:10px}.scope-note{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);line-height:1.8}.result-card{margin-top:23px}.eyebrow{font-size:12px;color:var(--blue);font-weight:650;letter-spacing:.08em;margin-bottom:3px}#result-status{font-size:16px;color:var(--muted);margin-top:6px}.result-card>.section-heading{align-items:flex-start}.summary{display:grid;grid-template-columns:.7fr .9fr .85fr 1.7fr;gap:13px;margin:0 23px 20px}.summary>div{border:1px solid var(--line);background:#f8faff;border-radius:8px;padding:13px 15px;min-width:0}.summary span{display:block;font-size:12px;color:var(--muted)}.summary strong{display:block;margin-top:4px;font-size:18px;font-weight:650;overflow-wrap:anywhere}.summary strong.time-summary{font-size:14px;line-height:1.7}.error-box{margin:0 23px 21px;padding:14px 17px;border:1px solid #ecc8bd;background:#fff5f1;color:#963d24;border-radius:8px;font-size:16px;overflow-wrap:anywhere;white-space:pre-line}.warnings-box{margin:0 23px 20px;padding:15px 18px;background:#fff9ec;border:1px solid #ebd8ae;color:#806025;border-radius:8px}.warnings-box h3{font-size:16px}.warnings-box ul{max-height:230px;overflow:auto;margin:8px 0 0;padding-left:22px;font-size:14px;line-height:1.8}.warnings-box li+li{margin-top:6px}.preservation-note{background:#edf4ff;border-top:1px solid #d8e5fa;border-bottom:1px solid #d8e5fa;padding:13px 23px;font-size:14px;color:#3d5b91;line-height:1.8}.preservation-note p+p{margin-top:4px}.comparison-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:21px 23px 13px}.comparison-heading p{font-size:12px;color:var(--muted)}.comparison-scroll{overflow:auto;max-height:610px;margin:0 23px;border:1px solid var(--line);border-radius:8px}.comparison-table{width:100%;border-collapse:collapse;table-layout:fixed}.comparison-table th{text-align:left;font-weight:600;font-size:12px;background:#f4f7fc;color:var(--muted);padding:12px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1}.comparison-table th:first-child{width:57px}.comparison-table th:nth-child(2),.comparison-table th:nth-child(3){width:168px}.comparison-table td{padding:13px 12px;vertical-align:top;border-bottom:1px solid #edf0f6;font-size:14px}.comparison-table tr:last-child td{border-bottom:0}.cue-index{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.timecode{font-size:14px;white-space:nowrap;line-height:1.85}.timecode.output-time{color:var(--blue-dark)}.cue-text{white-space:pre-wrap;overflow-wrap:anywhere;max-height:9em;overflow:auto;font-size:16px;line-height:1.7}.output-heading{display:flex;justify-content:space-between;gap:15px;align-items:center;padding:23px 23px 11px}.output-heading label{font-size:14px;font-weight:650}.output-heading p{font-size:12px;color:var(--muted);overflow-wrap:anywhere}#subtitle-output{display:block;width:calc(100% - 46px);margin:0 23px;font-size:16px;background:#fcfdff;min-height:230px;white-space:pre-wrap;tab-size:2}.save-note{font-size:14px;color:var(--muted);margin:12px 23px 21px;line-height:1.8}.result-empty{padding:22px 23px 30px;color:var(--muted);font-size:16px;line-height:1.85}.supported-scope{margin-top:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}.supported-scope summary{font-size:14px;font-weight:600;cursor:pointer;padding:16px 21px}.supported-scope>div{padding:0 21px 18px}.supported-scope ul{margin:0;padding-left:21px;font-size:14px;color:var(--muted);line-height:1.85}.supported-scope li+li{margin-top:8px}footer{font-size:12px;color:var(--muted);margin-top:28px;display:flex;gap:15px;justify-content:space-between;flex-wrap:wrap}footer>div{display:flex;gap:18px;flex-wrap:wrap}footer a{color:var(--muted);text-decoration:none}footer a:hover{color:var(--blue);text-decoration:underline}.skip{position:absolute;top:-100px;left:10px;z-index:50;background:white;padding:10px}.skip:focus{top:10px}.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}#toast{position:fixed;left:50%;bottom:23px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:13px 20px;border-radius:9px;box-shadow:0 5px 22px #15274430;max-width:min(660px,90vw);font-size:14px;z-index:30}#app-error{padding:20px;background:#fff3eb;color:#983d21;font-size:16px}[hidden]{display:none!important}
@media(max-width:1080px){.input-workspace{grid-template-columns:minmax(0,1fr) 300px;gap:17px}.settings-card{padding:20px}.summary{grid-template-columns:repeat(3,1fr)}.summary>div:last-child{grid-column:1/-1}.comparison-heading{display:block}.comparison-heading p{margin-top:6px}.comparison-table th:nth-child(2),.comparison-table th:nth-child(3){width:151px}.comparison-table th:first-child{width:47px}.comparison-table td,.comparison-table th{padding:12px 9px}}
@media(max-width:800px){.app-header{padding:16px 18px;gap:12px;flex-wrap:wrap}.brand{font-size:20px}.brand img{width:36px;height:36px}.brand p{font-size:12px}.beta{font-size:12px}.privacy-label{border:0;padding:0;margin-left:47px}.input-workspace{grid-template-columns:1fr}.settings-card{padding:21px}.settings-card form{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.settings-card .range-note,.settings-card #check-subtitles,.settings-card .input-state{grid-column:1/-1}.settings-card .field{margin-top:17px}.scope-note{margin-top:17px}.input-note{font-size:14px}main{padding:18px 16px 23px}.section-heading{padding:18px 19px 15px}.source-bar{padding:0 19px 11px}.source-bar p{font-size:12px}#subtitle-input{width:calc(100% - 38px);margin:0 19px;min-height:315px}.input-actions{padding:8px 19px 12px;gap:8px 15px}.input-actions .muted{margin-left:0}.input-note{padding:15px 19px 18px}.summary{margin:0 19px 18px;gap:8px}.summary>div{padding:11px}.summary strong{font-size:16px}.error-box,.warnings-box{margin:0 19px 18px}.result-card>.section-heading{flex-wrap:wrap}.result-card>.section-heading .button{font-size:14px}.preservation-note{padding:13px 19px}.comparison-heading{padding:18px 19px 12px}.comparison-scroll{margin:0 19px}.comparison-table th:nth-child(2),.comparison-table th:nth-child(3){width:142px}.comparison-table th:first-child{width:42px}.timecode{font-size:12px}.comparison-table td{font-size:14px}.cue-text{font-size:16px}.output-heading{padding:20px 19px 10px;flex-wrap:wrap;gap:5px}#subtitle-output{width:calc(100% - 38px);margin:0 19px}.save-note{margin:11px 19px 19px}.result-empty{padding:18px 19px 25px}.supported-scope summary{padding:15px 18px}.supported-scope>div{padding:0 18px 17px}}
@media(max-width:580px){.settings-card form{grid-template-columns:1fr}.settings-card .range-note,.settings-card #check-subtitles,.settings-card .input-state{grid-column:auto}.comparison-table,.comparison-table tbody,.comparison-table tr{display:block;width:100%}.comparison-table thead{display:none}.comparison-table tr{display:grid;grid-template-columns:1fr 1fr;gap:8px 12px;padding:15px;border-bottom:1px solid var(--line)}.comparison-table tr:last-child{border-bottom:0}.comparison-table td{border:0;padding:0;display:block;min-width:0}.comparison-table td:first-child{grid-column:1/-1}.comparison-table td:last-child{grid-column:1/-1}.comparison-table td:nth-child(2)::before{content:'入力の時刻';display:block;font-size:12px;color:var(--muted);margin-bottom:3px}.comparison-table td:nth-child(3)::before{content:'出力の時刻';display:block;font-size:12px;color:var(--muted);margin-bottom:3px}.timecode{font-size:13px;white-space:normal;overflow-wrap:anywhere}.summary{grid-template-columns:1fr 1fr}.summary>div:last-child{grid-column:auto}.summary strong.time-summary{font-size:12px}.result-card>.section-heading .button{width:100%}footer{display:block}footer>div{margin-top:8px;display:grid;gap:6px}}
@media(prefers-reduced-motion:no-preference){button{transition:background .15s,color .15s}}