:root{--bg:#0e0e10;--surface:#1a1a1e;--surface-alt:#202025;--ink:#f3f3f5;--muted:#9a9aa4;--line:#2c2c33;--brand:#e11d2e;--brand-ink:#fff;--silver:#c9cbd1;--accent:#e11d2e;--good:#34d399;--good-bg:#10352a;--warn:#fbbf24;--warn-bg:#3a2f10;--bad:#ff6b6b;--bad-bg:#3a1a1a;--new:#9a9aa4;--love:#4da3ff;--lee:#ff9f43;--mamma:#f472b6;--pappa:#c9cbd1;--radius:18px;--shadow:0 6px 20px #00000059;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}body:before{content:"";opacity:.12;pointer-events:none;z-index:-1;background:url(/logo.webp) 50%/min(100%,640px) no-repeat;position:fixed;inset:0}*{box-sizing:border-box}html{background:var(--bg)}body{min-height:100dvh;color:var(--ink);-webkit-tap-highlight-color:transparent;background:0 0;margin:0;font-family:system-ui,-apple-system,Segoe 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var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.card.empty{text-align:center;flex-direction:column;gap:4px;display:flex}.btn{border:none;border-radius:14px;min-height:48px;padding:13px 18px;font-weight:650}.btn.primary{background:var(--brand);color:var(--brand-ink)}.btn.ghost{border:1.5px solid var(--line);background:0 0}.btn.good{background:var(--good);color:#fff}.btn.bad{background:var(--bad);color:#fff}.btn.warn{background:var(--warn);color:#1a1a1e}.btn.big{padding:16px;font-size:1.05rem}.link-btn{color:var(--muted);background:0 0;border:none;padding:8px 0;font-weight:600}.link-btn.back{align-self:flex-start}.icon-btn{background:0 0;border:none;border-radius:10px;padding:6px 8px;font-size:1.3rem;line-height:1}.chip{border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 14px;font-weight:700}.student-chip.student-love{color:var(--love)}.student-chip.student-lee{color:var(--lee)}.student-chip.student-mamma{color:var(--mamma)}.student-chip.student-pappa{color:var(--pappa)}.input{width:100%;font:inherit;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);border-radius:14px;min-height:50px;padding:12px 14px;font-size:1.1rem}.input:focus{outline:2px solid var(--accent);outline-offset:1px}.picker-title{text-align:center;font-size:1.3rem}.picker{grid-template-columns:1fr 1fr;gap:14px;display:grid}.picker-btn{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:22px;flex-direction:column;align-items:center;gap:6px;padding:22px 10px;display:flex}.avatar{color:#fff;background:var(--accent);border-radius:50%;flex-shrink:0;place-items:center;width:72px;height:72px;font-size:2rem;font-weight:800;display:grid;overflow:hidden}.avatar img{object-fit:cover;width:100%;height:100%}.picker-family{text-align:center;color:var(--silver);letter-spacing:.04em;margin:0;font-weight:700}.picker.compact{grid-template-columns:repeat(3,1fr);gap:10px}.picker.compact .picker-btn{border-radius:18px;padding:14px 6px}.picker.compact .avatar{width:48px;height:48px;font-size:1.4rem}.picker.compact .picker-name{font-size:1rem}.picker.compact .picker-count{font-size:.8rem}.avatar.student-love{background:var(--love)}.avatar.student-lee{background:var(--lee)}.avatar.student-mamma{background:var(--mamma)}.avatar.student-pappa{background:var(--pappa);color:#1a1a1e}.picker-btn:last-child:nth-child(odd){grid-column:1/-1}.picker-name{font-size:1.25rem;font-weight:800}.picker-count{color:var(--muted);font-size:.9rem}.topbar{justify-content:space-between;align-items:center;display:flex}.topbar-actions{align-items:center;gap:6px;display:flex}.refresh-btn.spinning{animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.greeting{margin-top:4px}.subject{flex-direction:column;gap:10px;display:flex}.subject-title{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-size:.8rem}.exercise-card{text-align:left;flex-direction:column;gap:8px;width:100%;display:flex}.exercise-card-head{justify-content:space-between;align-items:flex-start;gap:10px;display:flex}.exercise-title{font-size:1.05rem;font-weight:700}.exercise-meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:6px;font-size:.87rem;display:flex}.due{background:var(--warn-bg);color:var(--warn);border-radius:999px;margin-left:auto;padding:2px 8px;font-size:.8rem;font-weight:700}.due.soon{background:var(--bad-bg);color:var(--bad)}.due.past{color:var(--muted);background:0 0}.status{white-space:nowrap;border-radius:999px;padding:3px 9px;font-size:.75rem;font-weight:800}.status-new{background:var(--line);color:var(--muted)}.status-practicing{background:var(--warn-bg);color:var(--warn)}.status-mastered{background:var(--good-bg);color:var(--good)}.progress{background:var(--line);border-radius:999px;flex:1;height:6px;overflow:hidden}.progress>div{background:var(--good);border-radius:999px;height:100%;transition:width .3s}.progress.thick{height:10px}.progress.thick>div{background:var(--accent)}.practice-top{align-items:center;gap:10px;display:flex}.prompt-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);text-align:center;box-shadow:var(--shadow);padding:28px 16px;position:relative}.prompt-card .icon-btn{position:absolute;top:8px;right:8px}.prompt-hint{color:var(--muted);text-align:center;font-size:.95rem}.prompt-word{overflow-wrap:anywhere;margin-top:4px;font-size:2.2rem;font-weight:800}.math-question{white-space:pre-wrap;text-align:left;font-size:1.35rem;font-weight:650}.picture{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);min-height:220px;box-shadow:var(--shadow);place-items:center;display:grid;overflow:hidden}.picture img{object-fit:contain;max-width:100%;max-height:300px}.picture-emoji{font-size:7rem;line-height:1}.answer-row{gap:8px;display:flex}.answer-row .input{flex:1;min-width:0}.mic-area{flex-direction:column;align-items:center;gap:10px;padding:10px 0;display:flex}.mic{background:var(--brand);width:104px;height:104px;box-shadow:var(--shadow);border:none;border-radius:50%;font-size:2.6rem}.mic.listening{background:var(--bad);animation:1.2s ease-in-out infinite pulse}@keyframes pulse{0%,to{box-shadow:0 0 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.btn{align-self:stretch}.results-title{font-size:1.5rem}.actions{flex-direction:column;gap:10px;display:flex}.stat-row{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.stat{text-align:center}.stat-value{font-size:1.5rem;font-weight:800}.stat-label{color:var(--muted);font-size:.8rem}.tone-mastered .stat-value{color:var(--good)}.tone-practicing .stat-value{color:var(--warn)}.tone-new .stat-value{color:var(--new)}.stacked-bar{border-radius:999px;gap:2px;height:12px;display:flex;overflow:hidden}.stacked-bar .mastered{background:var(--good)}.stacked-bar .practicing{background:var(--warn)}.stacked-bar .new{background:var(--line)}.chart{width:100%;height:auto}.chart .grid{stroke:var(--line);stroke-dasharray:3 4}.chart .bar.high{fill:var(--good)}.chart .bar.mid{fill:var(--warn)}.chart .bar.low{fill:var(--bad)}.chart .bar-label,.chart .axis-label{text-anchor:middle;fill:var(--muted);font-size:10px}.chart .bar-label{fill:var(--ink);font-weight:700}.coach{white-space:pre-wrap}.item-list{margin:0;padding:0;list-style:none}.item-list li{border-top:1px solid var(--line);justify-content:space-between;gap:12px;padding:10px 0;display:flex}.item-list li:first-child{border-top:none}.item-main{flex-direction:column;min-width:0;display:flex}.item-q{white-space:pre-wrap;font-weight:650}.item-a{color:var(--muted)}.item-wrong{color:var(--bad);font-size:.85rem}.item-side{flex-direction:column;flex-shrink:0;align-items:flex-end;gap:4px;display:flex}.chart .axis-label.strong{fill:var(--silver);font-weight:700}.session-log ul{margin:0;padding:0;list-style:none}.session-log li{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:10px 0;display:flex}.session-when{font-weight:650}.session-score{font-size:1.05rem;font-weight:800}.session-score.high{color:var(--good)}.session-score.mid{color:var(--warn)}.session-score.low{color:var(--bad)}.avatar.student-vba-larare{background:var(--silver);color:#1a1a1e}.logout-btn{background:var(--surface);border:1.5px solid var(--line);color:var(--silver);align-self:center;margin-top:8px}.greeting-row{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.greeting-row .greeting{margin:0}.profile-photo{display:contents}.profile-photo-btn{background:0 0;border:none;padding:0;position:relative}.avatar-home{border:2px solid var(--silver);width:64px;height:64px;font-size:1.7rem}.profile-photo-badge{background:var(--surface);border:1.5px solid var(--line);border-radius:50%;place-items:center;width:28px;height:28px;font-size:.85rem;display:grid;position:absolute;bottom:-4px;right:-4px}.profile-photo-menu{flex-direction:column;flex-basis:100%;gap:8px;display:flex}.choices{grid-template-columns:1fr 1fr;gap:10px;display:grid}.btn.choice{background:var(--surface);border:1.5px solid var(--line);color:inherit;min-height:64px;font-size:1.5rem}.btn.choice:disabled{opacity:.55}.btn.choice.picked{border-color:var(--bad);opacity:1}.btn.choice.right{border-color:var(--good);background:color-mix(in srgb, var(--good) 22%, var(--surface));opacity:1}.podium{color:var(--muted);flex-wrap:wrap;gap:4px 12px;font-size:.85rem;display:flex}.podium .me{color:inherit;font-weight:700}.valves{touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.valve{aspect-ratio:1;background:radial-gradient(circle at 35% 30%, #ff4b5a, var(--brand) 55%, #8f0f1b);color:#fff;box-shadow:0 6px 0 #6d0a14, var(--shadow);touch-action:none;border:3px solid #ff5a67;border-radius:50%;font-size:2.4rem;font-weight:800;transition:transform 80ms,box-shadow 80ms}.valve.down{filter:brightness(1.15);transform:translateY(5px)scale(.97);box-shadow:0 1px #6d0a14}.valve:disabled{opacity:.5}.hold-bar{background:var(--line);border-radius:999px;height:8px;overflow:hidden}.hold-bar>div{background:var(--brand);width:0;height:100%}.hold-bar>.filling{animation:linear forwards hold-fill}@keyframes hold-fill{to{width:100%}}.center-text{text-align:center;margin:0}.valve-checks{justify-content:center;align-items:center;gap:10px;display:flex}.valve-check{border:1.5px solid var(--line);background:var(--surface);border-radius:14px;align-items:center;gap:6px;padding:8px 12px;font-size:1.3rem;font-weight:700;display:flex}.valve-check input{width:22px;height:22px;accent-color:var(--brand)}.picture-hint{text-align:center;letter-spacing:.02em;font-size:1.5rem;font-weight:800}.play-box{border:1.5px solid var(--line);border-radius:var(--radius);background:var(--surface);flex-direction:column;gap:10px;padding:14px;transition:background .2s,border-color .2s;display:flex}.play-box.done{border-color:var(--good);background:var(--good-bg)}.play-status{text-align:center;min-height:1.6em;font-size:1.2rem;font-weight:700}.play-status.good{color:var(--good)}.tuner{align-items:center;gap:8px;display:flex}.tuner-label{color:var(--muted);font-size:.8rem}.tuner-scale{background:linear-gradient(90deg, #3a1d20, var(--line) 40%, var(--good-bg) 50%, var(--line) 60%, #3a1d20);border-radius:10px;flex:1;height:34px;position:relative}.tuner-center{background:var(--good);width:2px;position:absolute;top:0;bottom:0;left:50%}.tuner-needle{background:var(--brand);border-radius:3px;width:6px;margin-left:-3px;transition:left 80ms linear;position:absolute;top:-3px;bottom:-3px}.tuner-needle.in-tune{background:var(--good)}.hold-bar.good>div{background:var(--good);transition:width 50ms linear}.auto-next{background:var(--line);border-radius:999px;height:4px;overflow:hidden}.auto-next>div{opacity:.6;background:currentColor;width:100%;height:100%;animation:linear forwards auto-next}@keyframes auto-next{to{width:0}}.install-buttons{grid-template-columns:1fr 1fr;gap:10px;width:100%;display:grid}.install-buttons .btn{text-align:center;padding:10px;font-size:.9rem}.overlay{z-index:50;background:#000000b3;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.info-box{text-align:left;width:100%;max-width:440px;max-height:90vh;overflow-y:auto}.install-steps{flex-direction:column;gap:8px;margin:0;padding-left:1.3em;line-height:1.4;display:flex}.mic-ready{color:var(--good);font-size:1.1rem;font-weight:800}.mic-heard{text-align:center;font-size:1.1rem;font-style:italic}