:root{--bg: #f6f6fa;--surface: #ffffff;--surface-2: #f0f0f6;--border: #e6e6ef;--text: #16161d;--text-2: #565670;--muted: #8b8ba3;--accent: #4f46e5;--accent-2: #6d64f0;--accent-soft: #ecebfd;--on-accent: #ffffff;--good: #11804a;--good-soft: #e3f6ec;--warn: #a15c00;--warn-soft: #fff2dc;--bad: #c8312b;--bad-soft: #fde8e7;--chart: #5b54e8;--shadow: 0 1px 2px rgba(20, 20, 40, .04), 0 4px 16px rgba(20, 20, 40, .05);--radius: 18px;--radius-sm: 12px;--nav-h: 68px;color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg: #0f0f15;--surface: #1a1a24;--surface-2: #23232f;--border: #2d2d3b;--text: #f1f1f7;--text-2: #b4b4c8;--muted: #7f7f96;--accent: #8079ff;--accent-2: #958fff;--accent-soft: #26244a;--on-accent: #0f0f15;--good: #4fd18b;--good-soft: #15302a;--warn: #f2b14c;--warn-soft: #33281a;--bad: #ff7a72;--bad-soft: #3a1d1d;--chart: #8b85ff;--shadow: none;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit;color:inherit}h1,h2,h3,p{margin:0}h1{font-size:1.6rem;font-weight:800;letter-spacing:-.02em}h2{font-size:1.1rem;font-weight:700;letter-spacing:-.01em}h3{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.app{min-height:100vh}.main{max-width:760px;margin:0 auto;padding:16px 16px calc(var(--nav-h) + 32px + 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i.on{background:var(--good)}.original{font-size:1.2rem;line-height:1.6;font-weight:500;white-space:pre-wrap;word-break:break-word}.prompt{font-size:1.35rem;font-weight:700;line-height:1.4;letter-spacing:-.01em}.hint{color:var(--text-2);font-style:italic}.reveal-box{border:1.5px dashed var(--border);border-radius:var(--radius-sm);padding:14px 16px;background:transparent;width:100%;text-align:left;cursor:pointer;color:var(--muted);font-weight:600}.reveal-box:hover{border-color:var(--accent);color:var(--accent)}.blur{filter:blur(6px);-webkit-user-select:none;user-select:none;transition:filter .2s}.result{border-radius:var(--radius-sm);padding:14px 16px;display:flex;flex-direction:column;gap:6px}.result-correct{background:var(--good-soft)}.result-almost{background:var(--warn-soft)}.result-incorrect{background:var(--bad-soft)}.result-title{font-weight:800;font-size:1.05rem}.result-correct .result-title{color:var(--good)}.result-almost .result-title{color:var(--warn)}.result-incorrect 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summary{cursor:pointer;font-weight:700;list-style:none}details.disclosure summary::-webkit-details-marker{display:none}details.disclosure summary:after{content:"+";float:right;color:var(--muted)}details.disclosure[open] summary:after{content:"–"}.speak-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;flex:none;border:0;border-radius:999px;background:var(--accent-soft);color:var(--accent);cursor:pointer;font-weight:700;vertical-align:middle;transition:transform .12s,background .12s}.speak-btn:active{transform:scale(.94)}.speak-btn svg{width:18px;height:18px}.speak-sm{width:30px;height:30px}.speak-sm svg{width:15px;height:15px}.speak-md{width:40px;height:40px}.speak-lg{width:72px;height:72px}.speak-lg svg{width:32px;height:32px}.speak-btn.with-label{width:auto;padding:0 16px;height:40px}.speak-btn.playing{background:var(--accent);color:var(--on-accent);animation:pulse 1s ease infinite}.speak-slow{font-size:.65rem;margin-left:-2px}.speak-btn:has(.speak-slow){width:auto;padding:0 10px}.dictation{display:flex;align-items:center;justify-content:center;gap:16px;padding:12px 0}.chat{display:flex;flex-direction:column;gap:12px}.bubble{max-width:88%;padding:12px 16px;border-radius:18px;line-height:1.55;word-break:break-word;animation:rise .2s ease}.bubble-user{align-self:flex-end;background:var(--accent);color:var(--on-accent);border-bottom-right-radius:6px;white-space:pre-wrap}.bubble-assistant{align-self:flex-start;background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:6px}.bubble-assistant p{margin:0 0 8px}.bubble-assistant p:last-child,.bubble-assistant ul:last-child,.bubble-assistant ol:last-child{margin-bottom:0}.bubble-assistant ul,.bubble-assistant ol{margin:0 0 8px;padding-left:20px}.bubble-assistant h4{margin:4px 0 6px;font-size:1rem}.bubble-assistant code{background:var(--surface-2);padding:1px 6px;border-radius:6px;font-size:.92em}.bubble-tools{display:flex;gap:6px;margin-top:8px}.typing{display:inline-flex;gap:4px;padding:4px 0}.typing i{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:pulse 1s ease infinite}.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}.composer{position:sticky;bottom:calc(var(--nav-h) + 12px + env(safe-area-inset-bottom));display:flex;gap:8px;align-items:flex-end;background:var(--surface);border:1.5px solid var(--border);border-radius:20px;padding:6px 6px 6px 14px;box-shadow:var(--shadow)}@media (min-width: 960px){.composer{bottom:16px}}.composer:focus-within{border-color:var(--accent)}.composer textarea{flex:1;border:0;outline:none;background:transparent;resize:none;padding:8px 0;max-height:160px;line-height:1.45}.composer .btn{min-height:44px;width:44px;padding:0;border-radius:14px}.context-chip{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:.85rem;padding:6px 12px;border-radius:999px}.tense-row{padding:12px 4px;border-bottom:1px solid var(--border);cursor:pointer}.tense-row:last-child{border-bottom:0}.tense-row.original-tense{background:var(--accent-soft);border-radius:12px;padding:12px;border-bottom-color:transparent}.tense-name{font-size:.78rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;display:inline-flex;gap:6px;align-items:center}.tense-text{font-weight:600;font-size:1.05rem;margin-top:2px}.password-field{position:relative}.password-field .input{padding-right:52px}.password-field .input[aria-invalid=true]{border-color:var(--bad)}.eye-btn{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:40px;height:40px;border:0;border-radius:10px;background:transparent;display:grid;place-items:center;color:var(--muted);cursor:pointer}.eye-btn:hover{color:var(--text);background:var(--surface-2)}.eye-btn svg{width:20px;height:20px}.pill-points{background:var(--warn-soft);color:var(--warn);font-size:.85rem;padding:4px 12px}.pill-pro{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:var(--on-accent);font-size:.8rem;padding:4px 12px;letter-spacing:.05em}.points-earned{font-weight:800;color:var(--warn);animation:rise .3s ease}.plan-grid{display:grid;grid-template-columns:1fr;gap:12px}@media (min-width: 640px){.plan-grid{grid-template-columns:1fr 1fr}}.plan-pro{border:2px solid var(--accent)}.price{font-size:1.8rem;font-weight:800;letter-spacing:-.02em}.plan-list{margin:0;padding-left:20px;color:var(--text-2);display:flex;flex-direction:column;gap:4px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:#0a0a1473;display:grid;place-items:center;padding:16px;animation:rise .15s ease}.modal{width:100%;max-width:420px;text-align:center}.tutor-cards{display:grid;grid-template-columns:1fr;gap:12px}@media (min-width: 640px){.tutor-cards{grid-template-columns:1fr 1fr}}.tutor-cards .card-link{display:flex}.mode-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}.mode-card{display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:14px;color:var(--text);cursor:pointer;font:inherit;transition:border-color .12s ease,transform .12s ease}.mode-card:hover:not(:disabled){border-color:var(--accent)}.mode-card:active:not(:disabled){transform:scale(.98)}.mode-card:disabled{opacity:.55;cursor:default}.mode-emoji{font-size:1.5rem;line-height:1;min-height:24px;display:inline-flex;align-items:center}.pill-light{background:color-mix(in srgb,var(--on-accent) 20%,transparent);color:var(--on-accent)}.select-sm{min-height:36px;padding:0 10px;font-size:.9rem;width:auto}.voice-call{min-height:calc(100vh - 140px)}.orb-wrap{display:flex;flex-direction:column;align-items:center;gap:14px;padding:12px 0 4px}.orb-halo{position:relative;display:grid;place-items:center;width:168px;height:168px}.orb-halo:before{content:"";position:absolute;top:8px;right:8px;bottom:8px;left:8px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 22%,transparent) 40%,transparent 70%);opacity:.35;transform:scale(.92);transition:opacity .8s ease,transform .8s ease}.orb-halo-on:before{opacity:1;animation:breathe 3s ease-in-out infinite}.orb{position:relative;width:128px;height:128px;border-radius:50%;background:radial-gradient(circle at 35% 30%,var(--accent-2),var(--accent) 60%,color-mix(in srgb,var(--accent) 70%,#000) 100%);box-shadow:0 0 0 10px var(--accent-soft),0 12px 40px color-mix(in srgb,var(--accent) 30%,transparent);transition:transform .25s ease-out;will-change:transform}.orb-connecting{animation:breathe 2.4s ease-in-out infinite}@keyframes breathe{0%,to{transform:scale(.94)}50%{transform:scale(1.04)}}@media (prefers-reduced-motion: reduce){.orb-halo-on:before,.orb-connecting{animation:none}.orb{transition:none}}.transcript{display:flex;flex-direction:column;gap:10px;max-height:38vh;min-height:120px;overflow-y:auto;padding:14px}.transcript .bubble{max-width:92%;padding:10px 14px}.composer .input{flex:1;border:0;background:transparent;min-height:44px;padding:0;box-shadow:none}.composer 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