:root{--teal:#0f766e;--teal-dark:#115e56;--teal-tint:#e6f4f2;--emergency:#b91c1c;--emergency-tint:#fef2f2;--ink:#14201f;--muted:#5b6b69;--line:#d9e2e0;--bg:#fff;--radius:14px;--tap:52px;font-synthesis:none;text-rendering:optimizelegibility}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{color:var(--ink);background:var(--bg);-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:17px;line-height:1.4}button{cursor:pointer;font-family:inherit}.app{flex-direction:column;max-width:560px;min-height:100%;margin:0 auto;display:flex}.app-header{z-index:5;background:var(--bg);border-bottom:1px solid var(--line);padding-top:calc(14px + env(safe-area-inset-top));padding-right:calc(16px + env(safe-area-inset-right));padding-bottom:10px;padding-left:calc(16px + env(safe-area-inset-left));position:sticky;top:0}.app-bar{align-items:center;gap:12px;min-height:40px;display:flex}.app-mark{font-size:1.4rem}.app-h1{color:var(--teal);letter-spacing:-.01em;margin:0;font-size:1.4rem}.back-btn{border:1px solid var(--line);width:40px;height:40px;color:var(--teal);background:#fff;border-radius:999px;flex:none;justify-content:center;align-items:center;font-size:1.6rem;line-height:1;display:flex}.settings-btn{border:1px solid var(--line);width:40px;height:40px;color:var(--teal);background:#fff;border-radius:999px;flex:none;margin-left:auto;font-size:1.25rem;line-height:1}.settings{flex-direction:column;gap:22px;display:flex}.settings-section{flex-direction:column;gap:10px;display:flex}.settings-h{text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:0;font-size:.82rem;font-weight:700}.settings-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;gap:10px;padding:16px;display:flex}.settings-main{margin:0;font-size:1.05rem;font-weight:600}.settings-sub{color:var(--muted);margin:0}.settings-label{color:var(--muted);font-size:.9rem;font-weight:600}.settings-row{width:100%;min-height:var(--tap);border:1px solid var(--line);border-radius:var(--radius);text-align:left;background:#fff;justify-content:space-between;align-items:center;padding:14px 16px;font-size:1.05rem;display:flex}.settings-chevron{color:var(--muted);font-size:1.3rem}.unlock-promo{width:100%;min-height:var(--tap);border-radius:var(--radius);background:linear-gradient(135deg, #17b8a8 0%, var(--teal) 55%, var(--teal-dark) 100%);color:#fff;text-align:left;border:0;align-items:center;gap:12px;padding:14px 16px;display:flex;box-shadow:0 6px 18px #0f766e47}.unlock-promo-icon{background:#ffffff2e;border-radius:999px;flex:none;justify-content:center;align-items:center;width:42px;height:42px;font-size:1.4rem;display:flex}.unlock-promo-text{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.unlock-promo-title{letter-spacing:-.01em;font-size:1.1rem;font-weight:800}.unlock-promo-sub{color:#ffffffeb;font-size:.85rem}.unlock-promo-chevron{color:#ffffffd9;flex:none;font-size:1.5rem}.policy{flex-direction:column;gap:16px;padding-bottom:8px;display:flex}.policy-section{flex-direction:column;gap:4px;display:flex}.policy-h{color:var(--teal-dark);margin:0;font-size:1.05rem;font-weight:600}.policy-p{margin:0;line-height:1.55}.policy-note{color:var(--muted);margin:8px 0 0;font-size:.85rem;font-style:italic}.app-tagline{color:var(--muted);margin:4px 0 10px;font-size:.9rem}.lang-switch{flex-wrap:wrap;gap:6px;margin-top:12px;display:flex}.lang-chip{border:1px solid var(--line);min-height:40px;color:var(--muted);background:#fff;border-radius:999px;flex:auto;padding:6px 10px;font-size:.85rem}.lang-chip.is-active{background:var(--teal);border-color:var(--teal);color:#fff;font-weight:600}.app-main{flex:1;padding:14px 16px 24px}.search-bar{margin-bottom:16px}.search-input{width:100%;min-height:var(--tap);border:2px solid var(--line);border-radius:var(--radius);outline-offset:2px;padding:0 16px;font-size:1.1rem}.search-input:focus{border-color:var(--teal)}.section{margin-bottom:22px}.section-title{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 10px;font-size:.8rem}.section-emergency .section-title{color:var(--emergency)}.phrase-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.phrase-card{align-items:stretch;gap:8px;display:flex}.phrase-main{text-align:left;min-height:var(--tap);border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex:1;grid-template-columns:1fr auto;grid-template-areas:"gloss speaker""jyut speaker""hanzi speaker";align-items:center;gap:2px 8px;padding:12px 14px;display:grid}.section-emergency .phrase-main{background:var(--emergency-tint);border-color:#f3c4c4}.phrase-main.is-playing{border-color:var(--teal);box-shadow:0 0 0 2px var(--teal-tint)}.phrase-gloss{grid-area:gloss;font-size:1.15rem;font-weight:600}.phrase-jyutping{color:var(--teal-dark);grid-area:jyut;font-size:1.05rem;font-weight:600}.section-emergency .phrase-jyutping{color:var(--emergency)}.phrase-hanzi{color:var(--muted);grid-area:hanzi;font-size:1rem}.phrase-speaker{grid-area:speaker;font-size:1.5rem}.phrase-slow{min-width:64px;min-height:var(--tap);border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);background:#fff;flex-direction:column;flex:none;justify-content:center;align-items:center;gap:2px;padding:6px 10px;font-size:.85rem;display:flex}.empty{text-align:center;color:var(--muted);padding:40px 16px}.empty-title{margin:0 0 4px;font-size:1.1rem;font-weight:600}.empty-hint{margin:0;font-size:.9rem}.voice-note{color:var(--muted);text-align:center;margin:0;padding:10px 16px 18px;font-size:.8rem}.pwa-toast{background:var(--ink);color:#fff;border-radius:var(--radius);align-items:center;gap:12px;width:calc(100% - 32px);max-width:528px;padding:12px 16px;font-size:.9rem;display:flex;position:fixed;bottom:16px;left:50%;transform:translate(-50%);box-shadow:0 6px 24px #0003}.pwa-toast button{background:var(--teal);color:#fff;border:0;border-radius:8px;min-height:40px;margin-left:auto;padding:0 14px;font-weight:600}.pwa-toast .pwa-dismiss{background:0 0;margin-left:0;padding:0 6px}@media (prefers-reduced-motion:no-preference){.phrase-main.is-playing .phrase-speaker{animation:1s ease-in-out infinite pulse}@keyframes pulse{50%{opacity:.4}}}.progress-banner{gap:10px;margin-bottom:18px;display:flex}.stat{border-radius:var(--radius);background:var(--teal-tint);flex-direction:column;flex:1;align-items:center;padding:12px 6px;display:flex}.stat-value{color:var(--teal-dark);font-size:1.6rem;font-weight:700}.stat-label{color:var(--muted);font-size:.75rem}.stat-mastered{background:#e7f6ec}.stat-mastered .stat-value{color:#15803d}.tiles{flex-direction:column;gap:12px;display:flex}.tile{text-align:left;border:1px solid var(--line);border-radius:var(--radius);background:#fff;align-items:center;gap:14px;width:100%;min-height:76px;padding:16px;display:flex;position:relative}.tile:disabled{opacity:.55}.tile-emergency{background:var(--emergency-tint);border-color:#f3c4c4}.tile-icon{font-size:1.9rem}.tile-text{flex-direction:column;gap:2px;display:flex}.tile-title{font-size:1.15rem;font-weight:600}.tile-sub{color:var(--muted);font-size:.85rem}.tile-badge{background:var(--teal);color:#fff;border-radius:999px;justify-content:center;align-items:center;min-width:28px;height:28px;margin-left:auto;padding:0 8px;font-weight:700;display:flex}.module-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.module-card{text-align:left;border:1px solid var(--line);border-radius:var(--radius);background:#fff;align-items:center;gap:14px;width:100%;padding:14px 16px;display:flex}.module-icon{font-size:1.8rem}.module-body{flex-direction:column;flex:1;gap:6px;display:flex}.module-title{font-size:1.1rem;font-weight:600}.module-meter{background:var(--line);border-radius:999px;height:8px;overflow:hidden}.module-meter-fill{background:#15803d;height:100%;display:block}.module-count{color:var(--muted);font-size:.8rem}.module-chevron{color:var(--muted);font-size:1.6rem}.toggle-row{flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:10px;display:flex}.toggle-label{color:var(--muted);font-size:.8rem}.toggle-chip{border:1px solid var(--line);min-height:36px;color:var(--muted);background:#fff;border-radius:999px;padding:4px 12px;font-size:.85rem}.toggle-chip.is-on{background:var(--teal);border-color:var(--teal);color:#fff;font-weight:600}.study-hint{color:var(--muted);margin:0 0 12px;font-size:.85rem}.study-list{flex-direction:column;gap:10px;margin:0 0 18px;padding:0;list-style:none;display:flex}.study-row{border:1px solid var(--line);border-radius:var(--radius);background:#fff;align-items:center;gap:10px;padding:12px 14px;display:flex}.study-text{flex-direction:column;flex:1;gap:2px;display:flex}.study-gloss{font-size:1.1rem;font-weight:600}.study-jyutping{color:var(--teal-dark);font-size:1rem;font-weight:600}.study-hanzi{color:var(--muted);font-size:.95rem}.study-note{color:var(--muted);margin-top:2px;font-size:.82rem;line-height:1.35}.speaker-badge{text-transform:uppercase;letter-spacing:.03em;border-radius:999px;align-self:flex-start;margin-bottom:2px;padding:1px 8px;font-size:.72rem;font-weight:700}.speaker-customer{background:var(--teal-dark);color:#fff}.speaker-vendor{color:#3a2a00;background:#e7a13d}.speaker-staff{color:#fff;background:#7c5cbf}.speaker-patient{background:var(--teal-dark);color:#fff}.speaker-nurse{color:#fff;background:#2c8c9c}.speaker-doctor{color:#fff;background:#c0506b}.speaker-driver{color:#fff;background:#b5651d}.speaker-passenger{background:var(--teal-dark);color:#fff}.speaker-employer{color:#fff;background:#c0506b}.speaker-helper{background:var(--teal-dark);color:#fff}.speaker-mother{color:#fff;background:#c0506b}.speaker-child{color:#fff;background:#2c8c9c}.status-dot{font-size:1rem}.status-new{color:var(--line)}.status-learning{color:#d97706}.status-mastered{color:#15803d}.mastery-toggle{cursor:pointer;background:0 0;border:0;flex:none;justify-content:center;align-items:center;width:44px;height:44px;font-size:1.5rem;line-height:1;display:flex}.mastery-toggle.status-new{color:var(--muted)}.mastery-toggle.status-learning{color:#d97706}.mastery-toggle.status-mastered{color:#15803d}.mastery-toggle:active{transform:scale(.9)}.speak-buttons{align-items:center;gap:6px;display:flex}.speak-english{border:1px solid var(--line);height:48px;color:var(--teal-dark);letter-spacing:.02em;background:#fff;border-radius:12px;justify-content:center;align-items:center;padding:0 14px;font-size:.9rem;font-weight:700;display:inline-flex}.speak-normal,.speak-slow{border:1px solid var(--line);background:#fff;border-radius:12px;width:48px;height:48px;font-size:1.3rem}.speak-normal.is-playing{border-color:var(--teal);box-shadow:0 0 0 2px var(--teal-tint)}.practice-btn{width:100%;min-height:var(--tap);border-radius:var(--radius);background:var(--teal);color:#fff;border:0;font-size:1.05rem;font-weight:600}.confirm-btn:disabled{opacity:.45}.review-progress{text-align:center;color:var(--muted);margin-bottom:12px;font-size:.85rem}.prompt-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--teal-tint);flex-direction:column;align-items:center;gap:6px;margin-bottom:16px;padding:22px 16px;display:flex}.prompt-audio{background:var(--teal);color:#fff;border:0;border-radius:999px;width:64px;height:64px;margin-bottom:6px;font-size:1.8rem}.prompt-jyutping{color:var(--teal-dark);font-size:1.4rem;font-weight:700}.prompt-hanzi{color:var(--muted);font-size:1.2rem}.review-question{text-align:center;color:var(--muted);margin:0 0 12px;font-size:.95rem}.options{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.option{width:100%;min-height:var(--tap);border:2px solid var(--line);border-radius:var(--radius);text-align:left;background:#fff;padding:12px 16px;font-size:1.1rem}.option-selected{border-color:var(--teal-dark);background:#eef6f4;font-weight:600}.option-correct{background:#e7f6ec;border-color:#15803d;font-weight:600}.option-wrong{border-color:var(--emergency);background:var(--emergency-tint)}.review-action{margin-top:16px}.review-result{text-align:center;min-height:1.5em;margin-bottom:10px;font-weight:600}.result-ok{color:#15803d}.result-no{color:var(--emergency)}.next-btn{background:var(--teal);color:#fff;border:0;border-radius:10px;min-height:44px;padding:0 18px;font-weight:600}.review-done{text-align:center;flex-direction:column;align-items:center;gap:12px;padding:40px 16px;display:flex}.review-done-emoji{margin:0;font-size:3rem}.review-score{color:var(--teal-dark);margin:0;font-size:1.6rem;font-weight:700}.account-strip{text-align:left;border:1px solid var(--line);border-radius:var(--radius);background:var(--teal-tint);align-items:center;gap:10px;width:100%;margin-bottom:14px;padding:10px 14px;display:flex}.account-avatar{font-size:1.3rem}.account-strip-text{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:.9rem;overflow:hidden}.account-strip-cta{color:var(--teal);font-size:.85rem;font-weight:600}.account{flex-direction:column;gap:16px;display:flex}.account-card{border:1px solid var(--line);border-radius:var(--radius);flex-direction:column;gap:10px;padding:18px;display:flex}.account-label{color:var(--muted);margin:0;font-size:.85rem}.account-email{margin:0;font-size:1.1rem;font-weight:600}.account-input{min-height:var(--tap);border:2px solid var(--line);border-radius:12px;padding:0 14px;font-size:1.05rem}.account-input:focus{border-color:var(--teal)}.account-btn{min-height:var(--tap);background:var(--teal);color:#fff;border:0;border-radius:12px;font-size:1.05rem;font-weight:600}.account-btn:disabled{opacity:.5}.account-btn-ghost{color:var(--emergency);border:1px solid var(--line);background:#fff}.oauth{flex-direction:column;gap:10px;display:flex}.oauth-btn{min-height:var(--tap);border:1px solid var(--line);background:#fff;border-radius:12px;font-size:1rem;font-weight:600}.sim-note{color:var(--muted);text-align:center;margin:0;font-size:.8rem}.auth-gate{flex-direction:column;justify-content:center;align-items:center;gap:18px;max-width:480px;min-height:100dvh;margin:0 auto;padding:24px 18px;display:flex}.auth-gate .lang-switch{margin-top:0}.auth-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;gap:12px;width:100%;padding:24px 20px;display:flex}.auth-mark{text-align:center;font-size:2.4rem}.auth-title{text-align:center;margin:0;font-size:1.4rem}.auth-tagline{color:var(--muted);text-align:center;margin:0 0 4px;font-size:.95rem}.auth-form{flex-direction:column;gap:10px;display:flex}.auth-hint{color:var(--muted);margin:-2px 0 0;font-size:.8rem}.auth-error{color:var(--emergency);margin:0;font-size:.9rem}.auth-msg{color:var(--teal);text-align:center;margin:0;font-size:.9rem}.auth-links{flex-direction:column;align-items:center;gap:8px;display:flex}.auth-link{color:var(--teal);background:0 0;border:0;padding:6px;font-size:.95rem}.emergency-link{min-height:var(--tap);border:1px solid var(--emergency);color:var(--emergency);background:#fff;border-radius:12px;padding:0 18px;font-size:1rem;font-weight:600}.paywall{flex-direction:column;align-items:center;gap:14px;padding:8px 0;display:flex}.paywall-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;gap:12px;width:100%;padding:22px 20px;display:flex}.paywall-mark{text-align:center;font-size:2.4rem}.paywall-title{text-align:center;margin:0;font-size:1.3rem}.paywall-body{color:var(--muted);text-align:center;margin:0 0 4px;font-size:.95rem}.paywall-pitch{color:var(--teal-dark);text-align:center;margin:0 0 6px;font-size:1.1rem;font-weight:700;line-height:1.35}.pay-apple{background:#000}.pay-google{background:var(--teal-dark)}.pay-soon{color:var(--muted);text-align:center;margin:0;font-size:.9rem}.paywall-hero{text-align:center;border-radius:var(--radius);background:linear-gradient(155deg, #17b8a8 0%, var(--teal) 48%, var(--teal-dark) 100%);color:#fff;width:100%;padding:30px 22px 26px;box-shadow:0 10px 26px #0f766e4d}.paywall-hero-badge{background:#ffffff29;border-radius:999px;justify-content:center;align-items:center;width:64px;height:64px;margin:0 auto 12px;font-size:2rem;display:flex;box-shadow:inset 0 0 0 1px #ffffff40}.paywall-hero-title{color:#fff;letter-spacing:-.01em;margin:0 0 6px;font-size:1.55rem;font-weight:800}.paywall-hero-sub{color:#ffffffeb;max-width:34ch;margin:0 auto 18px;font-size:.98rem;line-height:1.45}.paywall-benefits{text-align:left;flex-direction:column;gap:11px;margin:0 auto;padding:0;list-style:none;display:inline-flex}.paywall-benefits li{align-items:center;gap:10px;font-size:1rem;font-weight:600;display:flex}.paywall-check{width:22px;height:22px;color:var(--teal-dark);background:#fff;border-radius:999px;flex:none;justify-content:center;align-items:center;font-size:.8rem;font-weight:800;display:flex}.paywall-cta{gap:10px}.paywall-cta-label{text-align:center;color:var(--ink);margin:0 0 2px;font-size:1.05rem;font-weight:700}.free-tag{background:var(--teal);color:#fff;text-transform:uppercase;letter-spacing:.03em;vertical-align:middle;border-radius:999px;margin-left:8px;padding:0 7px;font-size:.66rem;font-weight:700}.locked-panel{text-align:center;flex-direction:column;align-items:center;gap:14px;padding:40px 20px;display:flex}.locked-notice{color:var(--muted);margin:0;font-size:1rem}.paywall-until{color:var(--muted);text-align:center;margin:0;font-size:.9rem}.redeem-card{gap:8px}.redeem-row{gap:8px;display:flex}.redeem-row .account-input{text-transform:uppercase;flex:1}.redeem-row .account-btn{width:auto;padding:0 16px}.redeem-ok{color:var(--teal);margin:0;font-size:.9rem}.redeem-err{color:var(--emergency);margin:0;font-size:.9rem}.dashboard{flex-direction:column;gap:16px;display:flex}.backup-banner{text-align:left;border-radius:var(--radius);background:var(--teal);color:#fff;border:0;width:100%;padding:12px 14px;font-size:.9rem;font-weight:600}.dash-hero{gap:12px;display:flex}.streak-card{border-radius:var(--radius);background:#fff7ed;border:1px solid #fed7aa;flex-direction:column;flex:0 0 38%;justify-content:center;align-items:center;padding:16px 8px;display:flex}.streak-flame{font-size:1.8rem}.streak-num{color:#c2410c;font-size:2rem;font-weight:800;line-height:1}.streak-label{color:var(--muted);font-size:.75rem}.home-progress{width:100%;text-align:inherit;cursor:pointer;background:0 0;border:0;flex-direction:column;gap:10px;margin-bottom:18px;padding:0;display:flex}.home-progress .progress-banner{width:100%;margin-bottom:0}.streak-card-sm{flex-direction:row;flex:none;align-self:stretch;gap:8px;padding:8px 14px}.streak-card-sm .streak-flame{font-size:1.25rem}.streak-card-sm .streak-num{font-size:1.3rem}.streak-card-sm .streak-label{font-size:.8rem}.level-card{border-radius:var(--radius);background:var(--teal-tint);flex-direction:column;flex:1;justify-content:center;gap:6px;padding:16px;display:flex}.level-badge{background:var(--teal);color:#fff;border-radius:999px;align-self:flex-start;padding:4px 12px;font-size:.95rem;font-weight:700}.due-line{color:var(--muted);font-size:.85rem}.dash-modules{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.dash-module{align-items:center;gap:10px;display:flex}.dash-module-name{text-overflow:ellipsis;white-space:nowrap;flex:0 0 42%;font-size:.9rem;overflow:hidden}.dash-module .module-meter{flex:1}.dash-module-pct{color:var(--muted);text-align:right;flex:none;min-width:34px;font-size:.8rem}.weak-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.weak-row{background:var(--emergency-tint);border:1px solid #f3c4c4;border-radius:12px;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;display:flex}.weak-text{flex-direction:column;gap:2px;min-width:0;display:flex}.weak-gloss{font-weight:600}.weak-jyutping{color:var(--emergency);font-weight:600}.weak-miss{color:#fff;background:var(--emergency);border-radius:999px;flex:none;padding:2px 9px;font-size:.85rem;font-weight:700}.weak-more{color:var(--muted);margin:2px 0 0;font-size:.85rem}.tutor-pick{flex-direction:column;gap:12px;display:flex}.persona-btn{border:1px solid var(--line);border-radius:var(--radius);text-align:left;background:#fff;width:100%;min-height:64px;padding:0 18px;font-size:1.15rem;font-weight:600}.tutor{flex-direction:column;min-height:60vh;display:flex}.chat{flex-direction:column;flex:1;gap:8px;margin:0;padding:0;list-style:none;display:flex}.bubble{white-space:pre-wrap;border-radius:16px;max-width:82%;padding:10px 14px;font-size:1.05rem;line-height:1.45}.bubble-user{background:var(--teal);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.bubble-assistant{background:var(--teal-tint);color:var(--ink);border-bottom-left-radius:4px;align-self:flex-start}.bubble-typing{opacity:.6;letter-spacing:2px}.tutor-error{color:var(--emergency);text-align:center;margin:6px 0;font-size:.9rem}.chat-input{background:var(--bg);gap:8px;padding-top:10px;display:flex;position:sticky;bottom:0}.chat-field{min-height:var(--tap);border:2px solid var(--line);border-radius:var(--radius);flex:1;padding:0 14px;font-size:1.05rem}.chat-field:focus{border-color:var(--teal)}.chat-send{min-height:var(--tap);border-radius:var(--radius);background:var(--teal);color:#fff;border:0;flex:none;padding:0 18px;font-weight:600}.chat-send:disabled{opacity:.5}.linkage{flex-direction:column;gap:14px;display:flex}.link-share{flex-direction:column;gap:12px;display:flex}.friends{flex-direction:column;gap:10px;display:flex}.friend-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.friend-row{width:100%;min-height:var(--tap);border:1px solid var(--line);border-radius:var(--radius);text-align:left;cursor:pointer;background:#fff;align-items:center;gap:12px;padding:10px 12px;display:flex}.friend-row:active{background:var(--teal-tint)}.friend-avatar{background:var(--teal);color:#fff;border-radius:50%;flex:none;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.05rem;font-weight:700;display:flex}.friend-meta{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.friend-name{color:var(--ink);font-weight:600}.friend-glance{color:var(--muted);font-size:.8rem}.friend-chevron{color:var(--muted);flex:none;font-size:1.4rem}.friend-add{gap:8px;margin-top:2px;display:flex}.friend-code-input{flex:1}.friend-add-btn{flex:none;width:auto;padding:0 18px}.link-back{color:var(--teal-dark);cursor:pointer;background:0 0;border:none;align-self:flex-start;padding:4px 0;font-size:.95rem}.persona-toggle{gap:8px;display:flex}.persona-toggle .toggle-chip{flex:1;min-height:44px}.link-redeem{gap:8px;display:flex}.link-redeem .account-input{flex:1}.boundary-note{background:var(--teal-tint);border-radius:var(--radius);color:var(--teal-dark);margin:0;padding:12px 14px;font-size:.9rem}.invite-code{border:1px dashed var(--teal);border-radius:var(--radius);background:#fff;margin:0;padding:10px 14px;font-size:.95rem}.invite-code strong{letter-spacing:.05em;font-size:1.1rem}.assign-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.assign-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;gap:6px;padding:14px;display:flex}.assign-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.assign-title{font-size:1.1rem;font-weight:600}.assign-state{background:var(--line);color:var(--muted);border-radius:999px;flex:none;padding:3px 10px;font-size:.75rem;font-weight:700}.state-in_progress{color:#b45309;background:#fef3c7}.state-completed{color:#1d4ed8;background:#dbeafe}.state-mastered{color:#15803d;background:#e7f6ec}.assign-meta{color:var(--muted);font-size:.85rem}.assign-study{background:var(--teal);color:#fff;border:0;border-radius:10px;align-self:flex-start;min-height:40px;padding:0 16px;font-weight:600}.assign-create{flex-wrap:wrap;gap:8px;margin-top:4px;display:flex}.study-img{object-fit:cover;background:var(--teal-tint);border-radius:10px;flex:none;width:56px;height:56px}.prompt-img{aspect-ratio:1;object-fit:cover;border-radius:var(--radius);width:100%;max-width:280px;margin-bottom:6px}.study-warning{flex:none;justify-content:center;align-items:center;width:44px;height:44px;display:flex}.warning-symbol{object-fit:contain;background:#fff;border-radius:8px;width:44px;height:44px;display:block;box-shadow:0 1px 3px #0000002e}.study-img,.prompt-img{cursor:zoom-in}.img-lightbox{z-index:50;cursor:zoom-out;background:#000000d9;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.img-lightbox-img{object-fit:contain;border-radius:10px;max-width:92vw;max-height:88vh}.img-lightbox-close{color:#fff;background:#fff3;border:0;border-radius:999px;width:44px;height:44px;font-size:1.2rem;position:absolute;top:14px;right:16px}.study-note{color:var(--muted);margin-top:2px;font-size:.78rem}.detail-btn{border:1px solid var(--line);color:var(--teal);background:#fff;border-radius:999px;align-self:flex-start;margin-top:4px;padding:2px 8px;font-size:.78rem;font-weight:600}.detail-panel{background:var(--teal-tint);border-radius:var(--radius);margin:-4px 0 2px;padding:10px 14px;font-size:.88rem;list-style:none}.detail-panel p{margin:0 0 4px}.detail-panel p:last-child{margin:0}.dash-hint{color:var(--muted);margin:-6px 0 10px;font-size:.85rem}.feedback{flex-direction:column;gap:12px;display:flex}.feedback-intro{color:var(--ink);margin:0;font-size:.95rem}.fb-cats{gap:8px;display:flex}.fb-cats .toggle-chip{flex:1;min-height:44px}.feedback-text{resize:vertical;min-height:120px;padding:12px 14px;font-family:inherit;line-height:1.4}.feedback-from{color:var(--muted);margin:0;font-size:.9rem}.feedback-sent{background:var(--teal-tint);border-radius:var(--radius);color:var(--teal-dark);margin:0;padding:12px 14px;font-size:.9rem}.study-legend{color:var(--muted);margin:-4px 0 10px;font-size:.8rem;line-height:1.6}.study-legend .status-new{color:var(--muted)}.study-legend .status-learning{color:#d97706}.study-legend .status-mastered{color:#15803d}.lang-toggle{width:100%;min-height:var(--tap);border:1px solid var(--line);border-radius:var(--radius);color:var(--ink);cursor:pointer;background:#fff;justify-content:space-between;align-items:center;margin-top:8px;padding:10px 14px;font-size:1rem;display:flex}.lang-toggle.is-on{border-color:var(--teal);background:var(--teal-tint);color:var(--teal-dark);font-weight:600}.lang-toggle.is-fixed{cursor:default;opacity:.85}.lang-toggle-mark{font-size:1.1rem}.userid-row{align-items:center;gap:8px;display:flex}.userid-code{white-space:nowrap;background:var(--teal-tint);min-width:0;color:var(--ink);border-radius:8px;flex:auto;padding:8px 10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85rem;overflow-x:auto}.userid-copy{flex:none;width:auto;padding:0 14px}