:root{--bg: #f7f6f2;--surface: #ffffff;--text: #1f2421;--muted: #6b726e;--line: #e2e0d9;--accent: #2f5d50;--accent-soft: #e3ece8;--danger: #b3261e;--radius: 12px;color-scheme:light dark;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,sans-serif;font-size:17px;line-height:1.45;-webkit-text-size-adjust:100%}@media (prefers-color-scheme: dark){:root{--bg: #161917;--surface: #1f2321;--text: #e8ebe9;--muted: #9aa29d;--line: #333936;--accent: #7fbfa9;--accent-soft: #23332d;--danger: #f2b8b5}}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text)}h1{font-size:1.5rem;margin:0 0 16px}h2{font-size:1.05rem;margin:0}.muted{color:var(--muted)}.small{font-size:.9rem}button{font:inherit;min-height:44px;padding:0 16px;border-radius:10px;border:1px solid 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12px;color:var(--muted)}.deadline.warn{color:var(--danger);font-weight:600}.now-card{border:2px solid var(--accent)}.now-title{font-size:1.35rem;margin:0;line-height:1.3}.next{margin:4px 0 0;padding-top:12px;border-top:1px solid var(--line)}.level-card.ask{border:2px solid #c98a1a;background:color-mix(in srgb,#c98a1a 8%,var(--surface))}.segmented{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.segmented button{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 12px;height:auto;text-align:left}.segmented button span{font-size:.8rem;color:var(--muted)}.segmented button.on{background:var(--accent);border-color:var(--accent);color:var(--bg)}.segmented button.on span{color:inherit;opacity:.85}.timeline{list-style:none;margin:0;padding:0}.timeline li{display:grid;grid-template-columns:56px 1fr 44px;gap:10px;align-items:center;padding:8px 6px;border-radius:8px;min-height:44px}.timeline .time{font-variant-numeric:tabular-nums;color:var(--muted)}.timeline 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(min-width: 1000px){.fab{bottom:24px;right:24px}}.toast{position:fixed;left:50%;transform:translate(-50%);bottom:calc(130px + env(safe-area-inset-bottom));z-index:60;background:var(--text);color:var(--bg);padding:10px 16px;border-radius:999px;font-size:.9rem}.sheet-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:#00000059;display:flex;align-items:flex-end;justify-content:center}.sheet{width:100%;max-width:640px;background:var(--surface);border-radius:16px 16px 0 0;padding:16px 16px calc(16px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:12px}@media (min-width: 700px){.sheet-backdrop{align-items:center}.sheet{border-radius:16px}}button:disabled{opacity:.5;cursor:default}.card-head{flex-wrap:wrap;gap:8px}button{white-space:nowrap}.due-item span{min-width:0}.pinyin-text{white-space:pre-wrap;font-size:1.25rem;line-height:1.8;word-break:break-word}.pinyin-text.with-py{line-height:1.5}.pinyin-text.with-py ruby{display:inline-flex;flex-direction:column-reverse;align-items:center;margin:.3em 1px 0}.pinyin-text rt{display:block;font-size:.55em;line-height:1.3;color:var(--muted);user-select:none;-webkit-user-select:none}.gloss{text-decoration:underline dotted var(--accent);text-underline-offset:4px;cursor:pointer}.gloss-tip{display:inline-block;margin:0 4px;padding:0 8px;border-radius:6px;background:var(--accent-soft);color:var(--accent);font-size:.8rem;line-height:1.6;vertical-align:middle}.pinyin-input{width:100%;font-size:1.15rem;margin-bottom:16px}.pick-bar{position:fixed;left:0;right:0;bottom:calc(50px + env(safe-area-inset-bottom));z-index:40;margin:0 auto;max-width:720px;padding:12px 16px;background:var(--surface);border:1px solid var(--line);border-radius:16px 16px 0 0;box-shadow:0 -4px 18px #0000001f;display:flex;flex-direction:column;gap:8px}@media (min-width: 1000px){.pick-bar{bottom:16px;border-radius:16px;left:180px}}.pick-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.pick-text{font-size:1.2rem}.pick-sentence{margin:0}.pick-actions{display:flex;gap:8px;flex-wrap:wrap}.pick-actions input{flex:1 1 160px}.topic-list,.plain-list,.vocab-list{list-style:none;margin:0 0 16px;padding:0;display:flex;flex-direction:column;gap:8px}.topic-item,.list-btn{width:100%;height:auto;min-height:56px;padding:12px 16px;text-align:left;display:flex;flex-direction:column;align-items:flex-start;gap:2px;white-space:normal}.topic-item.current{border:2px solid var(--accent)}.topic-title{font-weight:600;display:flex;gap:8px;align-items:center;flex-wrap:wrap}button.back{padding-left:0;margin-bottom:4px}button.link.danger{color:var(--danger)}.topic-head{margin-bottom:12px;display:flex;flex-direction:column;gap:8px}.topic-title-input{font-size:1.4rem;font-weight:700;border-color:transparent;background:transparent;padding-left:0}.topic-title-input:focus{border-color:var(--line);background:var(--surface);padding-left:10px}.date-field{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:.9rem}.tabs{display:flex;gap:4px;overflow-x:auto;margin-bottom:16px;border-bottom:1px solid var(--line);scrollbar-width:none}.tabs button{border:none;border-radius:0;background:none;color:var(--muted);padding:0 14px;box-shadow:none}.tabs button.on{color:var(--accent);font-weight:600;box-shadow:inset 0 -3px 0 var(--accent)}.reading h2{font-size:1.2rem}.vocab-add{flex-direction:row;flex-wrap:wrap}.vocab-add input{flex:1 1 140px}.vocab-item{gap:6px;margin:0}.vocab-word{display:flex;align-items:baseline;gap:10px}.vocab-word strong{font-size:1.3rem}.vocab-sentence{margin:0;color:var(--muted)}.vocab-sentence mark{background:var(--accent-soft);color:var(--accent);border-radius:3px;padding:0 2px}.frame-item{display:flex;align-items:center;gap:8px;padding:6px 0 6px 14px;border-radius:10px;background:var(--surface);border:1px solid var(--line)}.frame-item span{flex:1}.writing textarea{width:100%;font-size:1.1rem;line-height:1.6}.count{margin:0;color:var(--muted)}.count.ok{color:var(--accent);font-weight:600}.small-chip{min-height:32px;font-size:.9rem;cursor:default}.pinyin-text.with-py span,.pinyin-text.with-py ruby{vertical-align:bottom}.streak{flex-direction:row;align-items:center;justify-content:space-between;flex-wrap:wrap}.streak p{margin:0}.streak-num{font-size:2rem;font-weight:700;color:var(--accent);margin-right:4px}.tag.warn{background:color-mix(in srgb,#c98a1a 18%,var(--surface));color:#8a5a06}@media (prefers-color-scheme: dark){.tag.warn{color:#f0c27a}}.shadow-list{margin-top:16px}.file-pick{display:flex;align-items:center;min-height:52px;padding:0 14px;border:2px dashed var(--line);border-radius:10px;cursor:pointer;color:var(--muted)}.file-pick input{position:absolute;opacity:0;width:1px;height:1px}.steps{list-style:none;margin:0 0 12px;padding:0;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}.steps button{display:flex;align-items:center;gap:6px;font-size:.9rem;padding:0 12px}.steps button.on{background:var(--accent);border-color:var(--accent);color:var(--bg)}.step-n{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:.8rem;font-weight:700}.steps button.on .step-n{background:var(--bg)}.player{position:sticky;top:0;z-index:4}.player-main{display:flex;align-items:center;gap:10px}.play{width:64px;height:56px;font-size:1.3rem}.player .time{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--muted)}.seek{width:100%;accent-color:var(--accent);min-height:32px;padding:0;border:none;background:none}.sentences{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.sentences li{display:grid;grid-template-columns:1fr auto 44px;align-items:center;gap:6px;border-radius:10px}.sentences li.now{background:var(--accent-soft)}.sentences li.sel{box-shadow:inset 3px 0 0 var(--accent)}.sent-text{height:auto;min-height:44px;padding:8px 10px;border:none;background:none;text-align:left;white-space:normal;font-size:1.1rem;line-height:1.6}.sent-text:disabled{opacity:1;cursor:default}.sent-text .pinyin-text{font-size:inherit}.hidden-text{color:var(--muted);letter-spacing:.1em}.py-only{color:var(--accent)}.star{font-size:1.3rem;color:var(--muted)}.star.on{color:#c98a1a}.mark-box{padding:12px;border-radius:10px;background:var(--accent-soft)}.mark-box p{margin:0 0 8px}.mark-btn{flex:1;min-height:56px;white-space:normal}.rec{min-width:140px;font-weight:600;color:var(--danger)}.rec.on{background:var(--danger);border-color:var(--danger);color:var(--surface);animation:pulse 1.2s ease-in-out infinite}.rec-list{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:10px}.rec-row{display:flex;flex-direction:column;gap:6px;padding-top:10px;border-top:1px solid var(--line)}.rec-row audio{width:100%;height:40px}.submit-card .stats{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;padding-bottom:10px;border-bottom:1px solid var(--line)}.submit-card .big{font-size:1.8rem;font-weight:700;color:var(--accent);margin-right:4px}.submit-card.debt{border:2px solid var(--danger)}.debt-num{color:var(--danger);font-weight:600}.debt-num .big{color:var(--danger)}.req-line{display:grid;grid-template-columns:28px 1fr;gap:8px;align-items:start}.check{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;border:2px solid var(--line);color:var(--muted);font-size:.8rem;margin-top:2px}.check.ok{background:var(--accent);border-color:var(--accent);color:var(--bg)}.sub-list{list-style:none;margin:4px 0 0;padding:0}.exempt-note{margin:0;padding:10px 12px;border-radius:10px;background:var(--accent-soft)}.exempt-form,.picker{display:flex;flex-direction:column;gap:8px;padding-top:10px;border-top:1px solid var(--line)}.exempt-form textarea{width:100%}.exempt-form p{margin:0}.picker .frame-item{padding:6px 6px 6px 12px}.submitted{color:var(--accent);font-weight:600}.check-field{display:flex;align-items:center;gap:10px;min-height:44px}.reminder{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 10px 10px 14px;margin-bottom:12px;border-radius:var(--radius)}.reminder.soft{background:color-mix(in srgb,#c98a1a 14%,var(--surface));border:1px solid #c98a1a}.reminder.warn,.reminder.late{background:var(--danger);color:var(--surface);font-weight:600}.button-link{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:10px;background:var(--surface);color:var(--text);text-decoration:none;white-space:nowrap;border:1px solid var(--line)}.red-screen{position:fixed;top:0;right:0;bottom:0;left:0;z-index:90;display:flex;align-items:center;justify-content:center;padding:24px 16px;background:#b3261e;color:#fff}.red-inner{max-width:520px;text-align:center;display:flex;flex-direction:column;gap:16px}.red-inner .eyebrow{color:#ffd9d6}.red-clock{font-size:clamp(3rem,14vw,6rem);font-weight:700;line-height:1}.red-screen button{border-color:#ffffff80;background:transparent;color:#fff}.red-screen button.primary{background:#fff;color:#b3261e}.fun-stats{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px}.fun-stats .big{font-size:1.8rem;font-weight:700;color:var(--accent)}.fun-form{display:flex;flex-direction:column;gap:10px}.fun-list{margin:0;gap:4px}.danger-btn{background:var(--danger);border-color:var(--danger);color:var(--surface)}.wish-form{display:flex;flex-wrap:wrap;gap:8px}.wish-form input{flex:1 1 140px}.wish{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 12px;border:1px solid var(--line);border-radius:10px}.prog{display:flex;flex-direction:column;gap:4px}.prog-head{display:flex;justify-content:space-between;gap:8px}.prog-head strong.ok{color:var(--accent)}.plan-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}.plan-col{display:flex;flex-direction:column;gap:6px;padding:10px;border-radius:12px;background:var(--bg);border:2px dashed transparent;min-height:80px}.plan-col.over{border-color:var(--accent);background:var(--accent-soft)}.plan-col.today{border-color:var(--accent);border-style:solid}.plan-col h3{margin:0 0 4px;font-size:1rem;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.plan-item{display:grid;grid-template-columns:44px 1fr auto auto auto;align-items:center;gap:2px;padding:2px 4px;border-radius:10px;background:var(--surface);border:1px solid var(--line);cursor:grab}.plan-item.done .plan-text span:first-child{text-decoration:line-through;color:var(--muted)}.plan-text{display:flex;flex-direction:column;min-width:0}.add-item{display:flex;flex-wrap:wrap;gap:8px}.add-item input:first-child{flex:1 1 180px}.add-item input[type=number]{width:90px}.plan-today{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.plan-today li{display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:6px}.plan-today li.done span{text-decoration:line-through;color:var(--muted)}.report{display:flex;flex-direction:column;gap:10px}.report-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px;margin:0}.report-grid div{padding:8px 10px;border-radius:10px;background:var(--bg)}.report-grid dt{font-size:.8rem;color:var(--muted)}.report-grid dd{margin:0;font-weight:600}.report-grid dd.ok{color:var(--accent)}.report-grid dd.bad{color:var(--danger)}.highlights blockquote{margin:0 0 8px;padding:8px 12px;border-left:3px solid var(--accent);background:var(--bg);border-radius:0 10px 10px 0}.highlights p{margin:4px 0 0;white-space:pre-wrap}h3{font-size:1rem;margin:8px 0 4px}