:root{--bg: #f6f2e9;--surface: #fffdf7;--ink: #23201b;--ink-soft: #6e665a;--ink-faint: #a79c8a;--rule: #dfd6c4;--accent: #2a4478;--accent-ink: #fffdf7;--loop-1: #2f4d9b;--loop-2: #6b4aa6;--loop-3: #b13327;--loop-4: #0e7a6e;--loop-5: #94620a;--serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif;--sans: "Hiragino Sans", "Yu Gothic UI", system-ui, sans-serif;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #191712;--surface: #201d17;--ink: #eae3d5;--ink-soft: #a8a08e;--ink-faint: #7c7566;--rule: #38322a;--accent: #9db4e0;--accent-ink: #191712;--loop-1: #93a9e6;--loop-2: #b49be0;--loop-3: #e58a7e;--loop-4: #6fc5b6;--loop-5: #d9a93c}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.7}.app{max-width:480px;margin:0 auto;padding:28px 20px 64px}a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:4px}button.quiet,.back{text-decoration-thickness:1px}h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:.03em}header{border-bottom:1px solid var(--rule);padding-bottom:14px;margin-bottom:4px}h1{font-size:26px;line-height:1.35;margin:0}.date{margin:6px 0 0;color:var(--ink-soft);font-variant-numeric:tabular-nums}.date .sep{margin:0 8px;color:var(--ink-faint)}section{margin-top:28px}h2{font-size:19px;margin:0 0 6px}h3{font-size:15px;margin:22px 0 8px}.hint{margin:0 0 12px;color:var(--ink-soft);font-size:13px}.hint a{text-decoration:none}.hint a:after{content:" ›";color:var(--ink-faint)}textarea,input{width:100%;padding:12px 14px;border:1px solid var(--rule);border-radius:3px;background:var(--surface);color:inherit;font:inherit;resize:vertical}textarea:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.row{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap}.row input{flex:1 1 200px}button{padding:10px 20px;border:none;border-radius:3px;background:var(--accent);color:var(--accent-ink);font:inherit;cursor:pointer}button:disabled{opacity:.45;cursor:default}.count,.status{color:var(--ink-soft);font-size:13px}.error{padding:10px 14px;border-left:3px solid var(--loop-3);background:var(--surface);color:var(--ink);font-size:14px}.notes{list-style:none;padding:0;margin:16px 0 0}.notes li{padding:10px 0;border-bottom:1px solid var(--rule)}.note-head{display:flex;gap:12px;align-items:baseline;flex-wrap:wrap}.notes .en{color:var(--accent)}.notes .pending{color:var(--ink-faint);font-size:12px}.notes .example{margin:4px 0 0;font-size:13px}.notes .why{margin:2px 0 0}.notes .empty{color:var(--ink-soft);font-size:13px;border:none}.upcoming{border-top:1px solid var(--rule);padding-top:24px;color:var(--ink-soft);font-size:13px}.upcoming ol{padding-left:1.2em;margin:8px 0 0}button.quiet{background:none;color:var(--accent);padding:8px 0;text-decoration:underline;text-underline-offset:3px}.corrected{margin-top:20px;padding:18px 20px;background:var(--surface);border:1px solid var(--rule);border-radius:3px}.corrected h3{margin-top:0}.corrected-body{margin:0;white-space:pre-wrap;font-size:17px;line-height:1.9}.overall{margin:14px 0 0;padding-top:12px;border-top:1px solid var(--rule);color:var(--ink-soft);font-size:13px}.corrections{list-style:none;padding:0;margin:0;counter-reset:correction}.corrections li{padding:14px 0;border-bottom:1px solid var(--rule)}.category{display:inline-block;font-size:12px;color:var(--ink-soft);border:1px solid var(--rule);border-radius:999px;padding:1px 10px}.diff{margin:8px 0 4px}.diff .before{text-decoration:line-through;color:var(--loop-3);text-decoration-color:var(--loop-3)}.diff .arrow{margin:0 8px;color:var(--ink-faint)}.diff .after{color:var(--accent);font-weight:600}.why{margin:0;font-size:13px;color:var(--ink-soft)}.sign-in{padding-top:84px}.sign-in-mark{display:block;width:56px;height:56px;margin-bottom:20px}.sign-in h1{margin-bottom:6px;font-size:30px}.sign-in .lead{margin:0 0 32px;color:var(--ink-soft);font-size:14px}.sign-in button{width:100%;padding:15px;font-size:16px}.sign-in .hint{margin:12px 0 0}.sign-in form{margin:0}.sign-in input{margin-bottom:4px;font-size:16px}.sign-in .error{margin-top:24px}.sign-in .notice{margin-top:48px;color:var(--ink-soft);font-size:12px}.sign-in .legal{margin-top:8px}.legal{margin:8px 0 0;color:var(--ink-soft);font-size:12px}.legal .sep{margin:0 8px;color:var(--ink-faint)}.legal-doc p,.legal-doc li{font-size:14px;line-height:1.95}.legal-doc .lead{margin:16px 0 0;color:var(--ink-soft);font-size:13px}.legal-doc h3{font-size:14px}.legal-doc ul,.legal-doc ol{padding-left:1.4em;margin:8px 0 0}.legal-doc li{margin-bottom:4px}.legal-doc .doc-date{margin:36px 0 0;padding-top:14px;border-top:1px solid var(--rule);color:var(--ink-soft);font-size:12px}.setting{display:flex;align-items:center;gap:12px;margin:0}.setting input[type=text]{flex:1 1 auto;min-width:0;margin:0}.setting button[type=submit]{flex:0 0 auto}.setting-label{flex:0 0 3.5em;color:var(--ink-soft);font-size:13px}.setting+.hint{margin-top:8px}.usage{margin:0;font-size:17px;font-variant-numeric:tabular-nums}.usage .sep{margin:0 8px;color:var(--ink-faint)}.aloud-text{margin:16px 0 0;padding:20px;background:var(--surface);border:1px solid var(--rule);border-radius:3px;font-size:20px;line-height:2;white-space:pre-wrap}.rates{display:flex;gap:6px}.rates button{background:none;color:var(--ink);border:1px solid var(--rule);border-radius:999px;padding:5px 15px;text-decoration:none;font-variant-numeric:tabular-nums}.rates button[aria-pressed=true]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.voice-label{color:var(--ink-soft);font-size:13px}select{flex:1 1 200px;min-width:0;padding:9px 10px;border:1px solid var(--rule);border-radius:3px;background:var(--surface);color:inherit;font:inherit}.hint.later{margin-top:20px;padding-top:12px;border-top:1px solid var(--rule)}button.recording{background:var(--loop-4)}.recordings{list-style:none;padding:0;margin:0}.recordings li{display:flex;align-items:baseline;gap:12px;padding:10px 0;border-bottom:1px solid var(--rule)}.recordings .attempt{min-width:5em}.recordings .length{color:var(--ink-soft);font-size:13px;font-variant-numeric:tabular-nums}.recordings button{margin-left:auto}.recordings button+button{margin-left:0}.card{margin-top:16px;padding:22px 20px;background:var(--surface);border:1px solid var(--rule);border-radius:3px}.card-progress{margin:0;color:var(--ink-soft);font-size:13px;font-variant-numeric:tabular-nums}.again-mark{margin-left:8px;padding:1px 8px;border:1px solid var(--rule);border-radius:999px;font-size:12px}.card-kind{margin:4px 0 14px;color:var(--ink-soft);font-size:13px}.card-prompt{margin:0 0 16px;font-size:20px;line-height:1.8}.card-answer{margin:0 0 16px;padding-top:16px;border-top:1px solid var(--rule);font-size:20px;line-height:1.8;color:var(--accent)}.grades{gap:8px;flex-wrap:nowrap}.grades button{flex:1 1 0;min-width:0;padding:12px 4px;white-space:nowrap;font-size:15px}.review-done{margin:16px 0 0;color:var(--ink-soft)}.review-done p{margin:0 0 14px}.home-head{border-bottom:none;padding-bottom:0}.app-name{display:flex;align-items:center;gap:7px;margin:0;color:var(--ink-soft);font-size:12px;letter-spacing:.22em}.app-mark{display:block;width:16px;height:16px}.today{margin:10px 0 0;font-size:30px}.today .weekday{margin-left:8px;color:var(--ink-soft);font-size:18px;font-family:var(--sans)}.counters{display:flex;align-items:baseline;gap:18px;margin:8px 0 0;color:var(--ink-soft);font-size:13px}.counters b{color:var(--ink);font-size:17px;font-weight:400;font-variant-numeric:tabular-nums}.calendar{display:flex;gap:0;list-style:none;padding:14px 0 16px;margin:14px 0 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}.calendar li{flex:1 1 0;text-align:center;line-height:1.4;color:var(--ink-faint);font-size:11px;letter-spacing:.08em}.calendar .dot{display:block;width:8px;height:8px;margin:6px auto 0;border:1px solid var(--ink-faint);border-radius:999px}.calendar .on{color:var(--ink)}.calendar .on .dot{background:var(--accent);border-color:var(--accent)}.tasks{list-style:none;padding:0;margin:10px 0 0;border-top:1px solid var(--rule)}.tasks li{border-bottom:1px solid var(--rule)}.task{display:flex;gap:12px;align-items:flex-start;padding:15px 2px;color:inherit;text-decoration:none}.task-mark{flex:0 0 22px;padding-top:2px;font-size:17px;text-align:center}.task-body{flex:1 1 auto;min-width:0}.task-title{display:block;font-family:var(--serif);font-weight:600;font-size:19px;line-height:1.5}.task-detail{display:block;margin-top:2px;color:var(--ink-soft);font-size:13px}.task-minutes{flex:0 0 auto;padding-top:5px;color:var(--ink-faint);font-size:12px;font-variant-numeric:tabular-nums;white-space:nowrap}.step-1 .task-mark{color:var(--loop-1)}.step-2 .task-mark{color:var(--loop-2)}.step-3 .task-mark{color:var(--loop-3)}.step-4 .task-mark{color:var(--loop-4)}.step-5 .task-mark{color:var(--loop-5)}.done{margin:10px 0 0;padding:16px 2px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}.recent{list-style:none;padding:0;margin:8px 0 0;border-top:1px solid var(--rule)}.recent li{display:flex;align-items:baseline;padding:11px 2px;border-bottom:1px solid var(--rule)}.recent a{color:inherit;text-decoration:none;font-variant-numeric:tabular-nums}.recent .count{margin-left:auto;font-size:12px}.recent .sep{display:none}.back{display:inline-block;margin-bottom:10px;color:var(--accent);font-size:13px;text-decoration:none}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.trend-empty,.trend-basis,.trend-caveat,.trend-note{font-size:13px;color:var(--ink-soft)}.trend-basis{margin:0;font-variant-numeric:tabular-nums}.trend-caveat{margin:4px 0 0}.trend-note{margin:20px 0 0;padding-top:12px;border-top:1px solid var(--rule)}.trend-bars{list-style:none;padding:0;margin:14px 0 0}.trend-bars li{display:grid;grid-template-columns:minmax(5em,max-content) 1fr max-content;align-items:center;gap:10px;padding:6px 0;font-size:13px;line-height:1.5}.trend-name{color:var(--ink)}.trend-bar{height:8px;background:var(--rule);overflow:hidden}.trend-bar>span{display:block;height:100%;background:var(--loop-2)}.trend-count{color:var(--ink-soft);font-variant-numeric:tabular-nums;white-space:nowrap}.trend-share{margin-left:8px;color:var(--ink-faint)}.trend-next{margin-top:24px;padding:18px 20px;background:var(--surface);border:1px solid var(--rule);border-radius:3px}.trend-next h3{margin:0 0 8px;font-size:17px}.trend-lead{margin:0 0 8px}.trend-examples{margin:12px 0 0;padding-left:20px}.trend-examples li{padding:8px 0;border-top:1px solid var(--rule)}.trend-date{color:var(--ink-faint);font-size:12px;font-variant-numeric:tabular-nums}.trend-shift{margin-top:24px}.trend-shift h3{margin:0 0 4px}.trend-shift ul{margin:0;padding-left:20px}.list-head{border-bottom:none;padding-bottom:6px}.month-nav{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:10px;padding:8px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);font-size:14px}.month-nav a{color:var(--accent);text-decoration:none}.month-nav strong{font-family:var(--serif);font-weight:600;font-size:17px}.month-nav .disabled{color:var(--ink-faint)}.month{width:100%;margin-top:14px;border-collapse:collapse;table-layout:fixed;font-variant-numeric:tabular-nums}.month th{padding:4px 0;color:var(--ink-faint);font-size:11px;font-weight:400;letter-spacing:.08em}.month td{padding:0;text-align:center}.month td>a,.month td>span{display:block;padding:4px 0;min-height:44px;color:inherit;text-decoration:none}.month td .date{display:block;margin:0;font-size:14px;line-height:1.5;color:inherit}.month td .dot{display:block;font-size:11px;line-height:1;height:12px;color:var(--ink-soft)}.month td a{border-radius:3px}.month td a:hover{background:var(--surface)}.month td.outside .date,.month td.future .date{color:var(--ink-faint);opacity:.6}.month td.today .date{font-weight:700;color:var(--accent);text-decoration:underline;text-underline-offset:3px}.legend{margin:10px 0 0;color:var(--ink-soft);font-size:12px}.older{margin:20px 0 0;padding:14px 16px;background:var(--surface);border:1px solid var(--rule);border-radius:3px;font-size:13px}.older:before{content:"④";float:left;margin-right:10px;color:var(--loop-4);font-size:15px}.older a{display:block;margin-top:4px;color:var(--accent)}.entry-list{list-style:none;padding:0;margin:10px 0 0;border-top:1px solid var(--rule)}.entry-list li{border-bottom:1px solid var(--rule)}.entry-list a{display:block;padding:12px 2px;color:inherit;text-decoration:none}.entry-head{display:flex;align-items:baseline;gap:8px}.entry-date{font-variant-numeric:tabular-nums}.entry-excerpt{display:block;margin-top:2px;color:var(--ink-soft);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.badge{margin-left:auto;padding:0;border:none;color:var(--ink-soft);font-size:12px;white-space:nowrap}.badge.spoken{color:var(--ink-faint)}.hint.more{margin-top:14px}.tabs{position:fixed;left:0;right:0;bottom:0;display:flex;max-width:480px;margin:0 auto;background:var(--surface);border-top:1px solid var(--rule);padding-bottom:env(safe-area-inset-bottom,0)}.tabs a{flex:1 1 0;padding:13px 0 15px;color:var(--ink-soft);font-size:12px;letter-spacing:.1em;text-align:center;text-decoration:none}.tabs a[aria-current=page]{color:var(--ink);box-shadow:inset 0 2px 0 0 var(--accent)}.app.tabbed{padding-bottom:96px}.interstitial{position:fixed;inset:0;z-index:20;display:flex;justify-content:center;background:var(--bg);overflow:hidden}.interstitial-inner{display:flex;flex-direction:column;width:100%;max-width:480px;padding:20px 20px calc(24px + env(safe-area-inset-bottom,0px))}.ad-head{display:flex;align-items:center;justify-content:space-between}.ad-close{padding:4px 0;font-size:14px}.ad-label{margin:0;color:var(--ink-faint);font-size:11px;letter-spacing:.18em}.ad-frame{flex:1 1 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;margin:14px 0 0;padding:24px 20px;border:1px dashed var(--rule);border-radius:3px;background:var(--surface);text-align:center}.ad-frame-title{margin:0;font-family:var(--serif);font-weight:600;font-size:19px}.ad-frame-note{margin:0;max-width:24em;color:var(--ink-soft);font-size:13px;text-wrap:balance}.ad-foot{margin-top:20px}.ad-step{margin:0;color:var(--ink-soft);font-size:13px}.ad-step .mark{margin-right:4px;color:var(--loop-3);font-size:15px}.ad-remaining{margin:4px 0 0;font-variant-numeric:tabular-nums}.ad-progress{height:2px;margin-top:10px;background:var(--rule);overflow:hidden}.ad-progress>span{display:block;height:100%;background:var(--ink-faint);transition:width .2s linear}.rewarded-offer{margin-top:14px}.rewarded-offer .hint{margin:6px 0 0}