:root{--bg:#f6f7fb;--card:#fff;--text:#182033;--muted:#687087;--accent:#4a67ff;--accent2:#835cff;--good:#16a36a;--bad:#e0475b;--warn:#e59a25;--line:#e5e8f0;--shadow:0 12px 35px rgba(30,40,80,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang TC","Noto Sans TC",Arial,sans-serif;background:linear-gradient(180deg,#f7f8ff 0,#f6f7fb 42%,#f6f7fb 100%);color:var(--text);min-height:100vh}button,input,select{font:inherit}.app{max-width:820px;margin:auto;min-height:100vh;padding:18px 16px calc(110px + env(safe-area-inset-bottom))}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.brand h1{font-size:24px;margin:0}.brand p{margin:4px 0 0;color:var(--muted);font-size:13px}.pill{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;color:var(--muted);font-size:13px;white-space:nowrap}.hero{background:linear-gradient(135deg,#4a67ff,#835cff);color:white;border-radius:26px;padding:24px;box-shadow:var(--shadow);margin-bottom:16px}.hero h2{margin:0 0 8px;font-size:28px}.hero p{margin:0;opacity:.92;line-height:1.5}.progress-track{height:10px;background:rgba(255,255,255,.25);border-radius:999px;margin:18px 0 8px;overflow:hidden}.progress-fill{height:100%;background:white;border-radius:999px;width:0%}.hero-stats{display:flex;justify-content:space-between;gap:12px;font-size:13px;opacity:.95}.panel{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:0 6px 20px rgba(30,40,80,.05);padding:16px}.section-title{display:flex;align-items:end;justify-content:space-between;margin:22px 0 10px}.section-title h3{margin:0;font-size:18px}.section-title button{border:none;background:none;color:var(--accent);font-weight:700}.pack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.pack-chip{appearance:none;border:2px solid var(--line);background:#fff;border-radius:16px;padding:14px 12px;text-align:left;cursor:pointer;min-height:72px;transition:.15s}.pack-chip.selected{border-color:var(--accent);background:#f1f3ff;box-shadow:0 4px 14px rgba(74,103,255,.10)}.pack-chip b{display:block;font-size:17px}.pack-chip .pack-title{display:block;font-size:13px;font-weight:700;color:#384158;margin-top:4px;line-height:1.25}.pack-chip small{display:block;color:var(--muted);margin-top:4px}.range-summary{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-top:12px;color:var(--muted);font-size:13px}.range-actions{display:flex;gap:8px;flex-wrap:wrap}.mini-btn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 10px;color:var(--accent);font-weight:700;cursor:pointer}.actions{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:14px}.action-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px;text-align:left;cursor:pointer;box-shadow:0 6px 20px rgba(30,40,80,.05)}.action-card:disabled{opacity:.45;cursor:not-allowed}.action-card b{font-size:17px;display:block;margin-bottom:5px}.action-card small{color:var(--muted);line-height:1.4}.cloud-mini{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px;cursor:pointer;margin-top:14px}.cloud-mini b{display:block;font-size:14px}.cloud-mini small{display:block;color:var(--muted);margin-top:3px}.cloud-dot{width:11px;height:11px;border-radius:50%;background:#aeb5c5;display:inline-block}.cloud-dot.on{background:var(--good)}.screen{display:none}.screen.active{display:block}.toolbar{display:flex;align-items:center;gap:10px;margin-bottom:14px;position:sticky;top:0;z-index:5;padding:6px 0;background:rgba(246,247,251,.92);backdrop-filter:blur(14px)}.back{border:none;background:white;width:42px;height:42px;border-radius:14px;box-shadow:0 4px 14px rgba(0,0,0,.06);cursor:pointer}.toolbar h2{font-size:20px;margin:0}.spacer{flex:1}.scope-pill{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 10px;color:var(--muted);font-size:12px}.btn{border:none;border-radius:14px;padding:13px 16px;font-weight:700;cursor:pointer}.btn.primary{background:var(--accent);color:white}.btn.good{background:#e9f8f1;color:var(--good)}.btn.bad{background:#fff0f2;color:var(--bad)}.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--text)}.btn:disabled{opacity:.5;cursor:not-allowed}.flash-wrap{display:flex;justify-content:center;padding:18px 0}.flashcard{width:min(100%,560px);min-height:330px;background:white;border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:26px;text-align:center;position:relative}.pack-badge{position:absolute;top:18px;left:18px;font-size:12px;color:var(--muted);background:#f1f3f8;border-radius:999px;padding:6px 9px}.count-badge{position:absolute;top:18px;right:18px;font-size:12px;color:var(--muted)}.word{font-size:clamp(48px,11vw,82px);font-weight:800;letter-spacing:-1px;overflow-wrap:anywhere}.hint{color:var(--muted);margin-top:8px}.speak{margin-top:22px;border:none;background:#eef1ff;color:var(--accent);border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer}.reveal{margin-top:14px}.meaning{display:none;margin-top:18px;border-top:1px solid var(--line);padding-top:16px;width:100%;text-align:left}.meaning.show{display:block}.meaning b{display:block;margin-bottom:5px}.meaning p{margin:6px 0;color:#384158;line-height:1.55}.rating{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:560px;margin:0 auto}.navrow{display:flex;gap:10px;justify-content:center;margin-top:12px}.quiz-card{background:white;border:1px solid var(--line);border-radius:26px;padding:22px;box-shadow:var(--shadow);scroll-margin-top:74px}.quiz-head{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:13px}.quiz-progress{height:8px;background:#edf0f6;border-radius:999px;margin:12px 0 22px;overflow:hidden}.quiz-progress i{display:block;height:100%;background:var(--accent);border-radius:999px}.prompt{text-align:center;margin:18px 0}.prompt h3{font-size:22px;margin:8px}.quiz-type{font-size:12px;color:var(--accent);font-weight:800;text-transform:uppercase;letter-spacing:.5px}.bigmask{font-size:42px;font-weight:800;letter-spacing:5px}.cloze{font-size:22px;line-height:1.55;margin:18px 0}.options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.option{background:#fff;border:2px solid var(--line);border-radius:16px;padding:16px;font-size:18px;font-weight:700;cursor:pointer;min-height:64px}.option.correct{border-color:#53c996;background:#effbf6}.option.wrong{border-color:#ef7c8a;background:#fff2f4}.spell{display:flex;gap:10px;max-width:460px;margin:0 auto}.spell input{flex:1;border:2px solid var(--line);border-radius:14px;padding:14px 16px;font-size:20px;min-width:0}.feedback{min-height:34px;text-align:center;margin:14px 0;font-weight:700}.feedback.good{color:var(--good)}.feedback.bad{color:var(--bad)}.empty{text-align:center;padding:34px 18px;color:var(--muted)}.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;text-align:center}.stat b{display:block;font-size:22px}.stat span{font-size:11px;color:var(--muted)}.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.search,.select{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px}.search{width:100%}.wordlist{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.word-row{border:1px solid var(--line);border-radius:16px;padding:13px;background:#fff}.word-row-head{display:flex;justify-content:space-between;gap:8px;align-items:start}.word-row b{font-size:17px}.word-row small{color:var(--muted)}.manual-select{margin-top:10px;width:100%;font-size:12px}.tabbar{position:fixed;left:0;right:0;bottom:0;background:rgba(255,255,255,.93);backdrop-filter:blur(18px);border-top:1px solid var(--line);padding:8px 12px calc(8px + env(safe-area-inset-bottom));z-index:20}.tabs{max-width:820px;margin:auto;display:grid;grid-template-columns:repeat(4,1fr);gap:4px}.tab{border:none;background:none;border-radius:14px;padding:8px 4px;color:var(--muted);font-size:12px}.tab b{display:block;font-size:18px;margin-bottom:2px}.tab.active{color:var(--accent);background:#f0f2ff}.toast{position:fixed;left:50%;bottom:94px;transform:translateX(-50%) translateY(20px);background:#20283a;color:white;border-radius:999px;padding:10px 16px;opacity:0;pointer-events:none;transition:.2s;z-index:50;max-width:90vw;text-align:center}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.note{font-size:13px;color:var(--muted);line-height:1.6}.status-star{color:#805b00}.status-familiar{color:var(--good)}.status-learning{color:var(--warn)}.status-strengthen{color:var(--bad)}.status-unmeasured{color:var(--muted)}
@media(max-width:600px){.app{padding-left:12px;padding-right:12px}.pack-grid{grid-template-columns:repeat(2,1fr)}.actions{grid-template-columns:1fr 1fr}.options{grid-template-columns:1fr 1fr}.wordlist{grid-template-columns:1fr}.flashcard{min-height:300px}.stats-grid{grid-template-columns:repeat(3,1fr)}.quiz-card{padding:16px}.option{padding:15px 10px;font-size:17px}.spell{flex-direction:column}.spell .btn{width:100%}}

/* Formal School Words V1 additions */
.pack-chip.archived{opacity:.55}.pack-chip .pack-line{display:block;font-size:17px;font-weight:800;line-height:1.25}.muted{color:var(--muted)}
.meaning-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}.meaning-head b{margin:0}.speak-mini{border:1px solid #dbe0ff;background:#f3f5ff;color:var(--accent);border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800;cursor:pointer;white-space:nowrap}
.skill-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-top:10px}.skill-chip{border-radius:10px;background:#f7f8fb;padding:7px 6px;text-align:center;font-size:10px;color:var(--muted)}.skill-chip b{display:block;color:var(--text);font-size:12px;margin-bottom:2px}
.parent-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.danger{background:#fff0f2!important;color:var(--bad)!important;border-color:#ffd1d7!important}.archive{background:#fff8e8!important;color:#8a6200!important;border-color:#f0dfb8!important}
.pack-admin-row{border:1px solid var(--line);border-radius:16px;padding:13px;background:#fff;margin-top:10px}.pack-admin-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.pack-admin-head b{font-size:16px}.state-badge{font-size:11px;border-radius:999px;padding:5px 8px;background:#f1f3f8;color:var(--muted);white-space:nowrap}.state-badge.active{background:#eaf8f1;color:var(--good)}.state-badge.archived{background:#fff7e4;color:#8a6200}
.cloud-panel{display:grid;gap:12px}.cloud-row{display:flex;align-items:flex-start;gap:12px}.cloud-row .cloud-dot{margin-top:6px}.cloud-code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#f7f8fb;border:1px dashed #cfd5e4;border-radius:12px;padding:10px 12px;word-break:break-all;font-size:12px}.button-row{display:flex;gap:8px;flex-wrap:wrap}.file-label{position:relative;overflow:hidden}.file-label input{position:absolute;inset:0;opacity:0;cursor:pointer}.full{width:100%}.tiny{font-size:12px;color:var(--muted);line-height:1.45}
.modal{position:fixed;inset:0;background:rgba(20,25,40,.38);display:none;align-items:center;justify-content:center;padding:18px;z-index:60}.modal.show{display:flex}.modal-card{width:min(100%,480px);max-height:85vh;overflow:auto;background:#fff;border-radius:24px;padding:20px;box-shadow:0 20px 60px rgba(0,0,0,.18);position:relative}.modal-x{position:absolute;right:14px;top:14px;width:36px;height:36px;border:0;background:#f1f3f8;border-radius:50%;font-size:22px;cursor:pointer}.modal-card h2{margin:0 42px 8px 0}.or{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px;margin:16px 0}.or:before,.or:after{content:"";height:1px;background:var(--line);flex:1}.field-label{font-size:12px;font-weight:700}.code-input{margin-top:6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:uppercase}
@media(max-width:600px){.skill-grid{grid-template-columns:repeat(3,1fr)}.pack-admin-head{flex-direction:column}.meaning-head{align-items:center}.speak-mini{font-size:11px;padding:6px 8px}}

/* V1.1 · V4 spelling / strengthen additions */
.action-card.featured{border-color:#d8ddff;background:linear-gradient(145deg,#f7f8ff,#fff)}
.weak-reasons{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin:10px 0 2px}.weak-reasons span{font-size:11px;font-weight:800;color:#a33b49;background:#fff0f2;border:1px solid #ffd9de;border-radius:999px;padding:5px 8px}.weak-reasons.small{justify-content:flex-start;margin:8px 0 0}
.letter-slots{display:flex;align-items:center;justify-content:center;gap:7px;flex-wrap:wrap;margin:18px auto 22px;max-width:650px;min-height:62px}.letter-slot{width:48px;height:58px;border:3px solid #83cdf5;border-radius:14px;background:#fff;display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:800;text-transform:lowercase}.spell-gap{width:20px}.spell-punct{font-size:28px;font-weight:800;align-self:center}
.letter-bank{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:690px;margin:0 auto}.letter-tile{min-width:70px;height:70px;border:2px solid var(--line);border-radius:18px;background:#fff;font-size:31px;font-weight:800;color:var(--text);box-shadow:0 4px 12px rgba(30,40,80,.05);cursor:pointer}.letter-tile:disabled{opacity:.25;transform:scale(.97)}.delete-tile{color:#9aa2b3;background:#f7f8fb}.small-audio{margin-top:10px}
.parent-selects{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}.parent-selects label{font-size:10px;color:var(--muted);font-weight:700}.parent-selects .manual-select{margin-top:4px}
@media(max-width:600px){.letter-slot{width:42px;height:54px;font-size:27px}.letter-tile{min-width:58px;height:64px;font-size:28px}.letter-slots{gap:6px}.parent-selects{grid-template-columns:1fr}}
@media(max-width:390px){.letter-slot{width:38px;height:50px}.letter-tile{min-width:54px;height:60px}.actions{grid-template-columns:1fr}}

/* V1.2.2: one-at-a-time 10-example card system */
.example-box{background:#f7f8fb;border-radius:18px;padding:14px 16px;margin-top:14px}.example-box small{color:var(--muted);font-weight:700}.example-box p{font-size:18px;line-height:1.5;margin:7px 0 10px}.example-actions{display:flex;gap:8px;flex-wrap:wrap}.example-actions .speak-mini{background:#fff;border:1px solid var(--line)}
@media(max-width:600px){.example-box p{font-size:16px}.example-actions .speak-mini{flex:1}}

/* V1.5: U1W1-U1W5 + V4.3 session-verified retirement engine */


/* V1.5.1 · Context result pronunciation: speakers appear only after answer submission */
#screen-quiz .option.context-result-option{display:grid;grid-template-columns:34px minmax(0,1fr) 34px;align-items:center;gap:6px;padding-left:8px;padding-right:8px}
#screen-quiz .context-result-option .option-word-label{grid-column:2;justify-self:center;text-align:center}
#screen-quiz .context-result-option .option-audio{grid-column:3;justify-self:end;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:999px;background:#f2f5ff;border:1px solid #dfe5ff;font-size:18px;line-height:1;cursor:pointer;user-select:none;-webkit-tap-highlight-color:transparent}
#screen-quiz .context-result-option .option-audio:active{transform:scale(.94)}

/* V1.5.7 — V4.3.3 Context pure-reading verification */
#screen-quiz .context-result-sentence{max-width:620px;margin:10px auto 0;padding:12px 14px;border-radius:15px;background:#f7f9ff;border:1px solid #e1e7f8;color:var(--text);text-align:center}
#screen-quiz .context-complete-line{font-size:16px;line-height:1.55;font-weight:650}
#screen-quiz .context-answer-word{display:inline!important;margin:0!important;padding:1px 5px;border-radius:7px;background:#fff0a8;color:var(--text);font-weight:850}
#screen-quiz .context-full-audio{margin-top:9px;border:1px solid #dfe5ff;background:#fff;color:var(--accent);border-radius:999px;padding:8px 12px;font-size:13px;font-weight:750;cursor:pointer;-webkit-tap-highlight-color:transparent}
#screen-quiz .context-full-audio:active{transform:scale(.97)}
@media(max-width:600px){#screen-quiz .context-result-sentence{padding:10px 11px;margin-top:8px}#screen-quiz .context-complete-line{font-size:15px}#screen-quiz .context-full-audio{padding:8px 11px}}


/* V1.5.2 · V4.3.1 POS: English-only child UI, highlighted target, one explanation audio after answering */
#screen-quiz .pos-prompt .quiz-type{text-transform:uppercase;letter-spacing:.7px}
#screen-quiz .pos-sentence{font-size:22px;line-height:1.55;margin:18px 0}
#screen-quiz .pos-target,#screen-quiz .pos-target-inline{display:inline-block;background:#fff0a8;border-radius:9px;padding:0 .18em;font-weight:850;color:var(--text);box-decoration-break:clone;-webkit-box-decoration-break:clone}
#screen-quiz .pos-question{font-size:21px;line-height:1.35;margin:14px 0 6px}
#screen-quiz .pos-options .option{text-transform:lowercase}
#screen-quiz .pos-feedback-explanation{max-width:620px;margin:10px auto 0;display:flex;align-items:center;justify-content:center;gap:10px;padding:11px 13px;background:#f5f7ff;border:1px solid #e3e7f5;border-radius:14px;color:var(--text);font-weight:600;line-height:1.4;text-align:left}
#screen-quiz .pos-feedback-explanation span{display:inline;margin:0;font-weight:600;color:var(--text)}
#screen-quiz .pos-explain-audio{flex:0 0 auto;width:36px;height:36px;border-radius:999px;border:1px solid #dfe5ff;background:#fff;color:var(--accent);font-size:18px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;-webkit-tap-highlight-color:transparent}
#screen-quiz .pos-explain-audio:active{transform:scale(.94)}
@media(max-width:600px){#screen-quiz .pos-question{font-size:19px;margin:11px 0 4px}#screen-quiz .pos-target,#screen-quiz .pos-target-inline{border-radius:7px}#screen-quiz .pos-feedback-explanation{font-size:13px;padding:9px 10px;gap:8px}#screen-quiz .pos-explain-audio{width:34px;height:34px}}


/* V1.5.8 — POS built-in context illustration card (aligned with Mibao 450) */
#screen-quiz .pos-feedback-rich{margin-top:10px;display:grid;grid-template-columns:minmax(0,1fr) 142px;gap:12px;align-items:stretch}
#screen-quiz .pos-feedback-copy{min-width:0;display:flex;flex-direction:column;justify-content:center;gap:9px}
#screen-quiz .pos-feedback-meaning{display:flex;align-items:flex-start;gap:9px;line-height:1.55;font-size:14px;color:var(--text)}
#screen-quiz .pos-feedback-meaning span{display:block;min-width:0}
#screen-quiz .pos-badge{align-self:flex-start;display:inline-flex;align-items:center;border:1px solid #a9c7ff;background:#eef5ff;color:#2d6cdf;border-radius:10px;padding:4px 10px;font-weight:850;font-size:14px;line-height:1.1}
#screen-quiz .pos-visual{position:relative;min-height:104px;border-radius:14px;overflow:hidden;background:linear-gradient(145deg,#edf3fb,#f8fbff);border:1px solid #dce6f4;display:flex;align-items:center;justify-content:center}
#screen-quiz .pos-visual img{width:100%;height:112px;display:block;object-fit:contain;background:#eef4ff}
@media(max-width:600px){
  #screen-quiz .pos-feedback-rich{grid-template-columns:minmax(0,1fr) 126px;gap:9px}
  #screen-quiz .pos-visual{min-height:96px;border-radius:12px}
  #screen-quiz .pos-visual img{height:104px}
  #screen-quiz .pos-feedback-meaning{font-size:13px;gap:7px}
  #screen-quiz .pos-badge{font-size:13px;padding:4px 9px}
}
@media(max-width:390px){
  #screen-quiz .pos-feedback-rich{grid-template-columns:minmax(0,1fr) 112px;gap:8px}
  #screen-quiz .pos-visual img{height:96px}
}


/* V1.5.5 — 450-style parent record dashboard */
#screen-progress .record-cloud-panel{margin-bottom:18px}
#screen-progress .section-title{align-items:center}
#screen-progress .muted{color:var(--muted);font-size:12px}
.report-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:10px}
.report-card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:15px;box-shadow:0 5px 16px rgba(30,40,80,.04)}
.report-card small{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}.report-card b{font-size:24px}.report-card span{color:var(--muted);font-size:12px;margin-left:3px}
.report-card:nth-child(1){background:linear-gradient(145deg,#f8fbff,#fff)}.report-card:nth-child(2){background:linear-gradient(145deg,#f4fbf7,#fff)}.report-card:nth-child(3){background:linear-gradient(145deg,#fff9ef,#fff)}
.report-grid.three .report-card:nth-child(1){background:linear-gradient(145deg,#f3f7ff,#fff)}.report-grid.three .report-card:nth-child(2){background:linear-gradient(145deg,#fff8ee,#fff)}.report-grid.three .report-card:nth-child(3){background:linear-gradient(145deg,#f6f2ff,#fff)}.report-grid.three .report-card:nth-child(4){background:linear-gradient(145deg,#f0f8ff,#fff)}.report-grid.three .report-card:nth-child(5){background:linear-gradient(145deg,#f5fbf5,#fff)}
.panel-title{margin:0 0 12px}.mistake-list{display:flex;gap:8px;flex-wrap:wrap}.mistake-chip{border:1px solid #ffd9de;background:#fff7f8;border-radius:999px;padding:8px 11px;font-weight:700;cursor:pointer;color:var(--text)}.mistake-chip small{color:var(--bad);font-weight:650;margin-left:4px}
.mastery-summary{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin:0 0 12px}.mastery-summary-card{border:1px solid var(--line);background:#fff;border-radius:17px;padding:13px 10px;text-align:left;cursor:pointer;box-shadow:0 4px 14px rgba(30,40,80,.04)}.mastery-summary-card small{display:block;font-weight:800;font-size:11px;white-space:nowrap}.mastery-summary-card b{display:block;font-size:25px;margin:6px 0 2px}.mastery-summary-card span{font-size:10px;color:var(--muted)}.mastery-summary-card.star{background:#fff8e8;border-color:#f1dfaa}.mastery-summary-card.familiar{background:#effaf4;border-color:#cfeedd}.mastery-summary-card.learning{background:#fff8e9;border-color:#f4e1b9}.mastery-summary-card.strengthen{background:#fff1f3;border-color:#ffd5da}.mastery-summary-card.unmeasured{background:#f5f6f9;border-color:#e3e5eb}.mastery-summary-card:active{transform:scale(.985)}
#screen-progress .record-stats{grid-template-columns:repeat(3,1fr);gap:10px}.record-stats .stat:nth-child(1){background:#f0faf5}.record-stats .stat:nth-child(2){background:#f4f6ff}.record-stats .stat:nth-child(3){background:#fff4f5}
.mastery-help{display:flex;gap:8px;align-items:flex-start;background:#f7f8ff;border:1px solid #e0e4ff;border-radius:14px;padding:11px 13px;margin-top:14px;font-size:12px;line-height:1.45}.mastery-help b{white-space:nowrap;color:var(--accent)}.mastery-help span{color:var(--muted)}
.mastery-controls{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;gap:8px;margin-top:14px}.mastery-wordlist{grid-template-columns:1fr!important;gap:9px;margin-top:14px}.mastery-word-card{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden}.mastery-word-card.strengthen{border-left:4px solid #e0475b}.mastery-word-card.learning{border-left:4px solid #e2a334}.mastery-word-card.familiar{border-left:4px solid #2ca56f}.mastery-word-card.star{border-left:4px solid #7754d9}.mastery-word-card.unmeasured{border-left:4px solid #cbd0da}
.mastery-word-head{display:grid;grid-template-columns:minmax(0,1fr) auto 34px;gap:10px;align-items:center;padding:12px 13px}.mastery-word-main{border:0;background:transparent;text-align:left;padding:0;cursor:pointer;min-width:0}.mastery-word-name span{display:block;font-size:17px;font-weight:800;overflow-wrap:anywhere}.mastery-word-name small{display:block;color:var(--muted);font-size:10px;margin-top:3px;line-height:1.35}.mastery-overall{text-align:right}.mastery-overall>b{display:block;font-size:19px}.status-display{display:block;font-size:10px;white-space:nowrap;font-weight:750}.status-display em{display:inline-block;margin-left:4px;padding:2px 5px;border-radius:999px;background:#eef1ff;color:var(--accent);font-size:8px;font-style:normal}.mastery-chevron-btn{border:0;background:transparent;color:var(--muted);font-size:18px;cursor:pointer;width:34px;height:34px;border-radius:10px}.mastery-word-card.open .mastery-chevron-btn{transform:rotate(180deg)}
.mastery-mini-track{height:4px;background:#edf0f6;margin:0 13px;border-radius:999px;overflow:hidden}.mastery-mini-track i{display:block;height:100%;background:linear-gradient(90deg,#4a67ff,#835cff);border-radius:999px}.mastery-meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:10px;padding:7px 13px 10px}.mastery-detail{display:none;border-top:1px solid var(--line);background:#fafbfe;padding:13px}.mastery-word-card.open .mastery-detail{display:block}.mastery-detail-top{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:8px}.mastery-detail-top b{display:block;font-size:14px}.mastery-detail-top small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
.skill-row{display:grid;grid-template-columns:86px minmax(80px,1fr) 46px 128px;align-items:center;gap:8px;padding:7px 0;font-size:11px}.skill-row>span{font-weight:750}.skill-row>b{text-align:right}.skill-row>small{color:var(--muted);text-align:right}.skill-track{height:7px;background:#e8ebf3;border-radius:999px;overflow:hidden}.skill-track i{display:block;height:100%;background:linear-gradient(90deg,#4a67ff,#835cff);border-radius:999px}.flash-skill{margin-top:4px;padding-top:11px;border-top:1px dashed var(--line)}
.record-extra-meta{display:flex;gap:6px;flex-wrap:wrap;margin:9px 0 2px}.record-extra-meta span{font-size:10px;color:#5f6880;background:#f0f2f7;border-radius:999px;padding:5px 8px}.record-parent-selects{margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}.record-backup{justify-content:flex-end;margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}.record-backup-note{margin:8px 0 0}
@media(max-width:680px){.mastery-summary{grid-template-columns:repeat(2,1fr)}.mastery-summary-card:last-child{grid-column:1/-1}.mastery-controls{grid-template-columns:1fr 1fr}.mastery-controls .search{grid-column:1/-1}.skill-row{grid-template-columns:82px 1fr 42px}.skill-row>small{grid-column:2/-1;text-align:left;margin-top:-4px}.mastery-detail-top{align-items:flex-start}.mastery-detail-top .mini-btn{white-space:nowrap}.report-grid.three{grid-template-columns:1fr 1fr}.record-backup .btn{flex:1}}
@media(max-width:430px){.report-card{padding:12px}.report-card b{font-size:21px}.mastery-summary-card small{font-size:10px}.mastery-summary-card b{font-size:22px}.mastery-controls{grid-template-columns:1fr}.mastery-controls .search{grid-column:auto}.mastery-word-head{grid-template-columns:minmax(0,1fr) auto 28px}.mastery-meta{gap:8px}.record-backup{justify-content:stretch}}


/* V1.5.10 — larger spelling correction answer for child readability */
#screen-quiz .spell-wrong-feedback{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;margin:6px auto 2px;max-width:100%;line-height:1.2}
#screen-quiz .spell-wrong-label{font-size:20px;font-weight:800;color:var(--bad)}
#screen-quiz .spell-correct-answer{display:block;font-size:clamp(32px,8vw,42px);font-weight:900;letter-spacing:.2px;color:var(--bad);overflow-wrap:anywhere;word-break:normal;max-width:100%}
@media(max-width:600px){#screen-quiz .spell-wrong-label{font-size:19px}#screen-quiz .spell-correct-answer{font-size:clamp(32px,9vw,40px)}}

/* V1.6: show the complete current sentence under the built-in scene card. */
#screen-quiz .pos-visual{display:flex;flex-direction:column;align-items:stretch;height:auto;min-height:0;overflow:visible}
#screen-quiz .pos-visual img{display:block;width:100%;height:auto;object-fit:contain;border-radius:16px}
.pos-scene-caption{margin:8px 4px 0;color:#44516b;font-size:14px;line-height:1.5;text-align:left;overflow-wrap:anywhere}

/* V1.6.3: reserve real layout space for the card labels and long scopes. */
#screen-study .flashcard{justify-content:flex-start}
#screen-study .flashcard-header{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:start;
  gap:10px;
  width:100%;
  margin-bottom:18px;
  text-align:left;
}
#screen-study .flashcard-header .pack-badge,
#screen-study .flashcard-header .count-badge{position:static;min-width:0;line-height:1.5}
#screen-study .flashcard-header .pack-badge{
  justify-self:start;
  max-width:100%;
  border-radius:14px;
  white-space:normal;
  overflow-wrap:anywhere;
}
#screen-study .flashcard-header .count-badge{padding-top:6px;white-space:nowrap;text-align:right}
#screen-study .flashcard .word{min-width:0;max-width:100%}
#screen-study .flashcard .word.word-phrase{font-size:clamp(32px,8vw,52px);line-height:1.2;letter-spacing:-.5px;overflow-wrap:break-word}
#screen-study .meaning .study-translation{font-size:15px;color:var(--muted);line-height:1.6}
.study-translation small{display:block;margin-top:6px;font-size:13px}
.pack-chip{min-width:0;overflow-wrap:anywhere}
.reviewed-options .option{min-width:0;overflow-wrap:anywhere;line-height:1.5}
.reviewed-options.sentence-options{grid-template-columns:1fr}
.circle-options .option{border-radius:999px}
.circle-options .option.correct{box-shadow:inset 0 0 0 2px var(--good)}
.match-board{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.match-board>div{display:grid;gap:12px;min-width:0}
.match-item{width:100%;min-height:60px;border:2px solid var(--line);border-radius:16px;background:var(--card);color:var(--text);padding:12px;font-size:20px;cursor:pointer}
.match-item.selected{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent)}
.match-item.correct{border-color:var(--good);color:var(--good)}
.match-item.wrong{border-color:var(--bad);color:var(--bad)}
.match-item:disabled{opacity:1;cursor:default}
.match-help,.match-status{color:var(--muted);line-height:1.5;text-align:center;font-size:15px}
.reading-explanation{font-size:18px;font-weight:400;line-height:1.6;color:var(--text);margin:12px 0}
.reading-hint{font-size:14px;font-weight:400;color:var(--muted)}
.review-audio-options{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;text-align:left}
.review-audio-options button{max-width:100%;white-space:normal;overflow-wrap:anywhere;text-align:left;line-height:1.5}
#screen-quiz .toolbar{display:grid;grid-template-columns:42px minmax(0,1fr);row-gap:8px}
#screen-quiz .toolbar .spacer{display:none}
#screen-quiz .toolbar .scope-pill{grid-column:1/-1;max-width:100%;overflow-wrap:anywhere;white-space:normal;line-height:1.5;border-radius:14px}
#screen-study .toolbar{display:grid;grid-template-columns:42px auto minmax(0,1fr)}
#screen-study .toolbar .spacer{display:none}
#screen-study .toolbar h2{white-space:nowrap}
#screen-study .toolbar .scope-pill{min-width:0;max-width:100%;justify-self:end;line-height:1.5;overflow-wrap:anywhere}
@media(max-width:600px){
  #screen-study .toolbar{grid-template-columns:42px minmax(0,1fr);row-gap:10px}
  #screen-study .toolbar .scope-pill{grid-column:1 / -1;justify-self:stretch;border-radius:14px}
}

/* V1.6.2: match Mibao450 V4.4.5 question / example / explanation hierarchy. */
#screen-quiz .context-prompt h3{text-wrap:balance}
#screen-quiz .context-prompt h3,
#screen-quiz .cloze,
#screen-quiz .pos-sentence{
  font-size:24px;
  font-weight:700;
  line-height:1.45;
  overflow-wrap:break-word;
}
#screen-study .meaning > p,
#screen-quiz .pos-feedback-meaning,
#screen-quiz .pos-feedback-meaning span{
  font-size:19px;
  font-weight:400;
  line-height:1.6;
  overflow-wrap:break-word;
}
#screen-study .example-box p,
#screen-quiz .context-complete-line,
#screen-quiz .pos-scene-caption{
  font-size:20px;
  font-weight:400;
  line-height:1.6;
  overflow-wrap:break-word;
}
#screen-study .meaning > p{margin:16px 0 14px}
#screen-study .example-box{padding:16px 16px 18px}
#screen-study .example-box p{margin:10px 0 14px}
#screen-quiz .context-result-sentence{margin:12px auto 0;padding:14px 16px}
#screen-quiz .context-full-audio{margin-top:12px}
#screen-quiz .pos-feedback-rich{
  grid-template-columns:minmax(0,1fr) minmax(0,240px);
  margin-top:14px;
  gap:16px;
  align-items:start;
}
#screen-quiz .pos-feedback-copy{gap:12px}
#screen-quiz .pos-feedback-meaning{
  gap:12px;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--surface-soft);
  text-align:left;
}
#screen-quiz .pos-visual{min-width:0;padding:12px;border-radius:16px}
#screen-quiz .pos-scene-caption{margin:12px 0 0}
#screen-quiz .pos-visual .pos-sentence-audio{
  align-self:flex-start;
  margin:12px 0 0;
  padding:10px 14px;
}
@media(max-width:600px){
  #screen-quiz .context-prompt h3,
  #screen-quiz .cloze,
  #screen-quiz .pos-sentence{font-size:22px}
  #screen-quiz .pos-feedback-rich{grid-template-columns:minmax(0,1fr);gap:14px}
}
@media(max-width:360px){
  #screen-study .meaning > p,
  #screen-quiz .pos-feedback-meaning,
  #screen-quiz .pos-feedback-meaning span{font-size:18px}
}

#screen-study .flashcard .word.word-long{font-size:clamp(36px,9vw,64px);line-height:1.2}
#screen-quiz .toolbar .scope-pill:not(#quizScope){display:none}

/* V1.8 review routes reuse the established colors and card typography. */
.review-count{display:block;margin:12px 0;font-size:17px;color:var(--accent)}
.review-count strong{font-size:30px}.review-help{margin-top:18px}
.review-actions .action-card small{display:block}.spell-review-note{margin-top:12px;color:var(--muted)}
@media(max-width:520px){.review-actions{grid-template-columns:1fr}}

/* V1.10: keep existing type scale and palette; allow compact stats to wrap. */
.hero-stats{flex-wrap:wrap;gap:8px 18px}.pack-stats{display:block;font-size:13px;line-height:1.6;color:var(--muted);margin-top:8px;font-weight:500}.cloud-mini{cursor:pointer}.cloud-mini:focus-visible{outline:3px solid var(--accent,#5654dc);outline-offset:3px}.spell-check-note{font-size:14px;color:var(--muted);text-align:center}.hero+.cloud-mini{margin:18px 0 24px}

/* V1.10.1: compact shared sync labels, preserving existing font sizes/spacing. */
.cloud-mini{grid-template-columns:auto minmax(0,1fr) auto}
.cloud-mini>div,.cloud-row>div{min-width:0;overflow-wrap:anywhere}
.cloud-modal-status{margin:12px 0}
.cloud-modal-status b{font-size:14px}
#cloudModal,#configModal{width:100vw;right:auto}
#cloudModal .modal-card,#configModal .modal-card{min-width:0;width:min(480px,calc(100vw - 36px));max-width:calc(100vw - 36px)}
/* Prevent long pack names from expanding the records-page viewport. */
#screen-progress .mastery-controls>*{min-width:0;max-width:100%}