:root{--bg: #f6f7f9;--surface: #ffffff;--surface-2: #eef0f4;--text: #1c1f26;--muted: #6b7280;--border: #e4e7ec;--accent: #6d5efc;--accent-ink: #ffffff;--shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 8px 24px rgba(16, 24, 40, .06);--radius: 18px;--again: #f0526a;--hard: #f5a524;--good: #21b07a;--easy: #4c8dff;--new: #6d5efc;--safe-t: env(safe-area-inset-top, 0px);--safe-b: env(safe-area-inset-bottom, 0px)}@media(prefers-color-scheme:dark){:root{--bg: #0e1013;--surface: #181b20;--surface-2: #22262d;--text: #eceef2;--muted: #9aa2af;--border: #2a2f37;--accent: #8b7dff;--shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 30px rgba(0, 0, 0, .35)}}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,system-ui,sans-serif;-webkit-font-smoothing:antialiased;overscroll-behavior:none;-webkit-tap-highlight-color:transparent}body{overflow-x:hidden;user-select:none;-webkit-user-select:none}#app{min-height:100%}.screen{max-width:560px;margin:0 auto;padding:calc(var(--safe-t) + 12px) 18px calc(var(--safe-b) + 24px);min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;gap:16px}.muted{color:var(--muted)}.small{font-size:13px}.center{text-align:center}.topbar{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:40px}.topbar .title{font-weight:600}.counter{font-variant-numeric:tabular-nums;font-size:14px;font-weight:600}.brand{display:inline-flex;align-items:center;gap:6px;font-size:17px}.brand svg{color:var(--accent)}.hero{text-align:center;margin-top:8vh}.hero h1{margin:12px 0 6px;font-size:30px;letter-spacing:-.02em}.logo{width:68px;height:68px;margin:0 auto;display:grid;place-items:center;border-radius:20px;color:#fff;background:linear-gradient(150deg,#7b6cff,#5b4bf0);box-shadow:var(--shadow)}.iconbtn{border:0;background:var(--surface);color:var(--text);width:40px;height:40px;border-radius:12px;font-size:18px;box-shadow:var(--shadow);cursor:pointer}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.card h3{margin:0 0 12px;font-size:15px;letter-spacing:.01em}.form{display:flex;flex-direction:column;gap:14px}.form label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}input,textarea,select{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:12px 14px;width:100%;-webkit-appearance:none;user-select:text;-webkit-user-select:text}textarea{resize:vertical}input:focus,textarea:focus,select:focus{outline:2px solid var(--accent);border-color:var(--accent)}.hint{font-size:12px;line-height:1.5;font-weight:400}.code{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font:13px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace;overflow-x:auto;user-select:text;-webkit-user-select:text;margin:12px 0}.card p{margin:0 0 10px;line-height:1.5}.card p:last-child{margin-bottom:0}.btn{border:1px solid var(--border);background:var(--surface-2);color:var(--text);font:inherit;font-weight:600;padding:13px 18px;border-radius:14px;cursor:pointer;transition:transform .08s ease,opacity .2s}.btn:active{transform:scale(.97)}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:transparent}.btn.ghost{background:transparent}.btn.big{width:100%;padding:16px;font-size:16px}.btn:disabled{opacity:.45;cursor:default}.link{background:none;border:0;color:var(--accent);font:inherit;font-weight:600;cursor:pointer;padding:4px}.link.muted{color:var(--muted)}.link.danger{color:var(--again)}.back{margin-left:-4px}.due-card{background:linear-gradient(160deg,var(--surface),var(--surface));border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow);padding:30px 20px 22px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:4px}.due-card.done{background:linear-gradient(160deg,#21b07a22,var(--surface))}.due-number{font-size:68px;font-weight:800;letter-spacing:-.04em;line-height:1}.due-card.done .due-number{color:var(--good);font-size:52px}.due-label{color:var(--muted);font-weight:600;margin-bottom:14px}.chips{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap;justify-content:center}.chip{font-size:12px;font-weight:600;padding:5px 10px;border-radius:999px;background:var(--surface-2)}.chip.new{color:var(--new)}.chip.learn{color:var(--hard)}.chip.rev{color:var(--good)}.due-card .btn.big{max-width:320px}.tiles{display:grid;grid-template-columns:1fr 1fr;gap:12px}.tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 14px;font:inherit;font-weight:600;color:var(--text);display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer}.tile:active{transform:scale(.98)}.tile-ico{font-size:22px;color:var(--accent)}.study{justify-content:space-between}.flashcard{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow);margin:6px 0;padding:28px 22px;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;text-align:center;cursor:pointer;overflow-y:auto;min-height:44vh}.flashcard .face.front{min-height:40vh;display:flex;flex-direction:column;align-items:center;justify-content:center}.flashcard .face{width:100%}.flashcard .text{white-space:pre-wrap;word-break:break-word;font-size:24px;line-height:1.4;font-weight:500}.flashcard .back .text{font-weight:400}.flashcard .divider{width:60%;border:0;border-top:1px solid var(--border);margin:20px 0}.flashcard .back .respell{margin-top:12px;font-size:18px;font-weight:500;letter-spacing:.02em;color:var(--accent)}.respell-preview{font-size:14px;letter-spacing:.02em;color:var(--accent);min-height:1.2em;margin-top:-4px}.row-respell{font-size:13px;letter-spacing:.02em;color:var(--accent);margin-top:2px}.answerbar{padding-top:6px}.grades{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.grade{border:0;border-radius:16px;padding:20px 6px;cursor:pointer;min-height:72px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:#fff;font:inherit}.grade:active{transform:scale(.96)}.grade .g-label{font-weight:700;font-size:17px}.grade .g-int{font-size:12px;opacity:.9;font-variant-numeric:tabular-nums}.grade.again{background:var(--again)}.grade.hard{background:var(--hard)}.grade.good{background:var(--good)}.grade.easy{background:var(--easy)}.done-screen{align-items:center;justify-content:center;text-align:center;gap:10px}.done-emoji{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;background:var(--good);color:#fff;font-size:42px;margin-bottom:8px}.list{display:flex;flex-direction:column;gap:10px}.row{background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:14px;display:grid;grid-template-columns:auto 1fr auto;gap:6px 10px;align-items:start}.row-icon{width:40px;height:40px;object-fit:contain;align-self:center}.row-icon.empty{visibility:hidden}.row-front{font-weight:600}.row-back{font-size:14px;max-height:2.8em;overflow:hidden}.row-front,.row-back{white-space:pre-wrap;word-break:break-word}.row-sub{display:flex;align-items:center;flex-wrap:wrap;gap:6px 12px;margin-top:6px;font-size:12px}.next-review{color:var(--muted);font-weight:600;font-variant-numeric:tabular-nums}.history{display:inline-flex;align-items:center;gap:4px}.hdot{width:8px;height:8px;border-radius:50%;background:var(--surface-2);display:inline-block}.hdot.g1{background:var(--again)}.hdot.g2{background:var(--hard)}.hdot.g3{background:var(--good)}.hdot.g4{background:var(--easy)}.hcount{color:var(--muted);font-weight:600;margin-left:2px}.row-meta{display:flex;flex-direction:column;align-items:flex-end;gap:4px}.row-actions{grid-column:1 / -1;display:flex;gap:14px;border-top:1px solid var(--border);padding-top:8px;margin-top:2px}.row-actions .link{padding:2px;font-size:14px}.tag{font-size:11px;font-weight:700;padding:3px 8px;border-radius:999px;background:var(--surface-2);color:var(--muted)}.tag.s0{color:var(--new)}.tag.s1,.tag.s3{color:var(--hard)}.tag.s2{color:var(--good)}.tag.susp{color:var(--again)}.empty{text-align:center;padding:40px 0}.card-icon{width:46%;max-width:168px;height:auto;aspect-ratio:1/1;object-fit:contain;margin:0 auto 18px;display:block}.field{display:flex;flex-direction:column;gap:6px}.fieldlabel{font-size:13px;font-weight:600;color:var(--muted)}.iconrow{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 8px;-webkit-overflow-scrolling:touch;scrollbar-width:thin}.iconrow:empty{display:none}.iconchip{flex:0 0 auto;width:54px;height:54px;border-radius:12px;border:2px solid var(--border);background:var(--bg);display:grid;place-items:center;cursor:pointer;padding:6px;font-size:12px;font-weight:600;color:var(--muted)}.iconchip img{width:100%;height:100%;object-fit:contain;display:block}.iconchip.sel{border-color:var(--accent);background:var(--accent-soft, var(--surface-2))}.iconchip:active{transform:scale(.95)}.loading,.skeleton-hero{padding:60px 0;text-align:center;color:var(--muted)}.skeleton-hero{min-height:40vh}#ptr{position:fixed;top:calc(var(--safe-t) + 6px);left:50%;transform:translate(-50%) translateY(-52px);width:36px;height:36px;border-radius:50%;background:var(--surface);box-shadow:var(--shadow);display:grid;place-items:center;z-index:40;pointer-events:none}#ptr.settling{transition:transform .25s ease}.ptr-spinner{width:18px;height:18px;border-radius:50%;border:2px solid var(--border);border-top-color:var(--accent)}#ptr.ready .ptr-spinner{border-top-color:var(--good)}#ptr.spin .ptr-spinner{animation:ptr-spin .7s linear infinite}@keyframes ptr-spin{to{transform:rotate(360deg)}}#toast{position:fixed;left:50%;bottom:calc(var(--safe-b) + 24px);transform:translate(-50%,20px);background:#23262d;color:#fff;padding:12px 18px;border-radius:12px;font-size:14px;font-weight:600;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:50;max-width:90vw;text-align:center}#toast.show{opacity:1;transform:translate(-50%)}#toast.toast--error{background:var(--again)}#toast.toast--success{background:var(--good)}.tile.wide{grid-column:1 / -1;flex-direction:row;justify-content:flex-start;gap:12px;text-align:left;width:100%}.reflex-entry{background:linear-gradient(150deg,var(--surface),var(--surface-2))}.reflex-entry .tile-ico{font-size:26px}.reflex-entry-main{display:flex;flex-direction:column;gap:2px}.reflex-entry-sub{font-size:12px;font-weight:500}.reflex-hero{display:flex;flex-direction:column;gap:14px;align-items:center;text-align:center}.reflex-tagline{font-size:18px;font-weight:700;letter-spacing:-.01em;margin-top:4px}.reflex-stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:100%}.rstat{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:14px 8px;text-align:center}.rstat-n{font-size:26px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.rstat-l{font-size:11px;color:var(--muted);font-weight:600;margin-top:2px}.rstat.big{width:100%;padding:22px}.rstat.big .rstat-n{font-size:44px}.rstat.big.good .rstat-n{color:var(--good)}.reflex-extremes{line-height:1.5}.modepick{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.modechip{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:12px;padding:10px 6px;font:inherit;font-size:12px;font-weight:600;cursor:pointer;line-height:1.25}.modechip.sel{border-color:var(--accent);color:var(--accent);background:var(--surface-2)}.hint.warn{background:color-mix(in srgb,var(--hard) 14%,var(--surface));border:1px solid color-mix(in srgb,var(--hard) 40%,var(--border));border-radius:12px;padding:12px 14px;color:var(--text)}.drill{justify-content:space-between}.timebar-wrap{flex:1;height:6px;background:var(--surface-2);border-radius:999px;overflow:hidden;margin:0 10px}.timebar{height:100%;width:100%;background:var(--accent);transition:width .2s linear}.stim{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center;min-height:40vh}.stim-word{font-size:46px;font-weight:700;letter-spacing:.01em;word-break:break-word}.stim-hint{max-width:24ch}.replaybtn{width:96px;height:96px;border-radius:50%;border:0;cursor:pointer;background:var(--accent);color:var(--accent-ink);font-size:34px;box-shadow:var(--shadow);display:grid;place-items:center}.replaybtn:active{transform:scale(.96)}.grades.two{grid-template-columns:1fr 1fr}.dunno{width:100%;margin-top:10px;color:var(--muted);font-size:14px;padding:10px}.ansbtn{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:16px;padding:18px 8px;cursor:pointer;font:inherit;box-shadow:var(--shadow);transition:transform .06s ease,background .1s,border-color .1s;display:grid;place-items:center;min-height:76px}.ansbtn:active{transform:scale(.97)}.ansbtn:disabled{opacity:.55}.ansbtn.audio{font-size:20px;font-weight:700}.ansbtn.right{background:var(--good);border-color:transparent;color:#fff}.ansbtn.wrong{background:var(--again);border-color:transparent;color:#fff}.ansbtn.slow{background:var(--hard);border-color:transparent;color:#fff}.ansbtn.right .gk i,.ansbtn.wrong .gk i,.ansbtn.slow .gk i{color:#ffffffd9}.gk{display:flex;flex-direction:column;align-items:center;gap:3px}.gk b{font-size:30px;font-weight:800;letter-spacing:.01em}.gk i{font-style:normal;font-size:13px;color:var(--muted);font-weight:600}.mx-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px}.mx-table{border-collapse:collapse;margin:0 auto;font-variant-numeric:tabular-nums}.mxh{font-size:12px;font-weight:700;color:var(--muted);padding:4px;text-align:center;min-width:26px}.mxh.corner{font-size:10px}.mxh.row{text-align:right;padding-right:6px;position:sticky;left:0;background:var(--bg)}.mx{width:28px;height:28px;text-align:center;font-size:11px;font-weight:700;border:1px solid var(--border);color:var(--text)}.mx.err{background:color-mix(in srgb,var(--again) calc(var(--a, 0) * 100%),transparent);color:var(--text)}.mx.diag{background:color-mix(in srgb,var(--good) calc(var(--a, 0) * 100%),var(--surface-2));color:var(--muted)}.mx-h3{margin:8px 0 2px;font-size:15px}.cbars{display:flex;flex-direction:column;gap:10px}.cbar{display:grid;grid-template-columns:68px 1fr 56px;align-items:center;gap:10px}.cbar-name{font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}.cbar-track{position:relative;height:12px;background:var(--surface-2);border-radius:999px}.cbar-fill{height:100%;border-radius:999px;background:var(--muted);min-width:2px}.cbar-fill.mastered{background:var(--good)}.cbar-fill.fast{background:var(--easy)}.cbar-fill.slow{background:var(--hard)}.cbar-target{position:absolute;top:-2px;bottom:-2px;width:2px;background:var(--text);opacity:.5}.cbar-val{font-size:13px;text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}.hard-dot{color:var(--again);font-weight:900}.checkrow{flex-direction:row!important;align-items:center;gap:10px;font-weight:600;color:var(--text)}.checkrow input{width:auto}.learn-card{display:flex;flex-direction:column;gap:10px}.learn-head{display:flex;align-items:baseline;justify-content:space-between}.learn-head h3{margin:0}.learn-bar{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden}.learn-bar-fill{height:100%;background:var(--good);border-radius:999px;transition:width .3s ease}.learn-next{margin:0}.card>h3:first-child{margin-top:0}.lesson-row{grid-template-columns:1fr auto;cursor:pointer}.lesson-row.is-next{border-color:var(--accent)}.lesson-row .row-front{display:flex;gap:8px;align-items:baseline;flex-wrap:wrap}.teach-note{font-size:15px;line-height:1.55;margin:0 0 14px}.teach-note b{color:var(--accent)}.teach-sides{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:6px}.teach-side{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;padding:16px 10px;border:1px solid var(--border);border-radius:16px;background:var(--bg)}.teach-g{font-size:20px}.teach-g b{font-size:26px}.teach-hint{line-height:1.4}.playchip{border:0;background:var(--accent);color:var(--accent-ink);cursor:pointer;border-radius:999px;padding:8px 16px;font:inherit;font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px}.teach-side .playchip{width:56px;height:56px;border-radius:50%;justify-content:center;padding:0;font-size:22px}.playchip:active{transform:scale(.96)}.reveal{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;padding:8px}.reveal-verdict{font-size:18px;font-weight:800}.reveal.ok .reveal-verdict{color:var(--good)}.reveal.no .reveal-verdict{color:var(--again)}.reveal-word{font-size:40px;font-weight:700;word-break:break-word}.reveal-explain{font-size:15px;line-height:1.55;max-width:32ch;margin:4px 0 0}.reveal-explain b{color:var(--accent)}