:root{--bg:#f6f4ef;--card:#fff;--ink:#1f1d1a;--muted:#7a756c;--accent:#d9480f;--accent-soft:#fff0e6;--line:#e6e1d8;--ok:#2b8a3e;--bad:#c92a2a;color:var(--ink);background:var(--bg);font-family:system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0}h1{margin:.5rem 0;font-size:1.4rem}h2{margin:0 0 .5rem;font-size:1.05rem}button{font:inherit;border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:10px;padding:.5rem .9rem}button:disabled{opacity:.6}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button.big{width:100%;padding:.9rem;font-size:1.05rem}.field{border:1px solid var(--line);width:100%;font:inherit;background:var(--card);border-radius:10px;margin:.3rem 0;padding:.7rem}label{color:var(--muted);margin:.5rem 0;display:block}.muted{color:var(--muted)}.center{text-align:center;margin-top:2rem}.error{color:var(--bad)}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;margin:.8rem 0;padding:1rem}.app{max-width:640px;min-height:100vh;margin:0 auto;padding-bottom:4.5rem}.topbar{z-index:10;background:var(--bg);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:.6rem 1rem;display:flex;position:sticky;top:0}.brand{letter-spacing:.02em;font-weight:700}.content{padding:.5rem 1rem}.tabbar{width:100%;max-width:640px;padding:.7rem 0 calc(.7rem + env(safe-area-inset-bottom));background:var(--card);border-top:1px solid var(--line);justify-content:space-around;display:flex;position:fixed;bottom:0;left:50%;transform:translate(-50%)}.tabbar a{color:var(--muted);text-decoration:none}.tabbar a.active{color:var(--accent);font-weight:600}.model-switcher{position:relative}.model-switcher .dropdown{background:var(--card);border:1px solid var(--line);border-radius:10px;min-width:12rem;margin:0;padding:.3rem;list-style:none;position:absolute;top:110%;left:0;box-shadow:0 6px 20px #00000014}.model-switcher .dropdown button{text-align:left;border:none;width:100%}.model-switcher .dropdown button.active{color:var(--accent)}.login{max-width:420px;margin:3rem auto}.segmented{gap:.5rem;margin:.8rem 0;display:flex}.segmented button{flex:1}.segmented button.active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.modes{grid-template-columns:repeat(3,1fr);gap:.5rem;margin:.5rem 0;display:grid}.mode{flex-direction:column;align-items:center;gap:.2rem;padding:.8rem .3rem;display:flex}.mode .icon{font-size:1.6rem}.mode small{color:var(--muted);font-size:.75rem}.mode.active{border-color:var(--accent);background:var(--accent-soft)}.langs{gap:.5rem;margin:.5rem 0;display:flex}.langs label{text-align:center;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;border-radius:10px;flex:1;margin:0;padding:.45rem}.langs label.active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.langs input{display:none}.queue{margin:1rem 0;padding:0;list-style:none}.queue-item{background:var(--card);border:1px solid var(--line);color:inherit;border-radius:12px;align-items:center;gap:.8rem;margin-bottom:.5rem;padding:.6rem;text-decoration:none;display:flex}.queue-item img{object-fit:cover;background:#000;border-radius:8px;width:88px;height:56px}.queue-item>div{flex:1;min-width:0}.queue-item .preview{text-overflow:ellipsis;white-space:nowrap;margin:.2rem 0 0;font-size:.9rem;overflow:hidden}.badge{background:var(--line);border-radius:999px;padding:.1rem .5rem;font-size:.75rem}.badge.done{color:var(--ok);background:#e6f4ea}.badge.failed{color:var(--bad);background:#fdecec}.badge.processing,.badge.queued{background:var(--accent-soft);color:var(--accent)}.detail .shot{object-fit:contain;cursor:zoom-in;background:#000;border-radius:12px;width:100%;max-height:45vh}.detail .shot.expanded{cursor:zoom-out;max-height:none}.back{color:var(--muted);margin:.3rem 0 .6rem;text-decoration:none;display:inline-block}.notice{color:#fff;background:#2b2b2b;border-radius:10px;padding:.6rem .8rem}.subtitle{font-size:1.1rem;line-height:1.6}.corrections{padding-left:1.1rem}.corrections small{color:var(--muted);display:block}.scene{color:var(--muted)}.vocab{border-left:4px solid var(--accent)}.vocab .head{flex-wrap:wrap;align-items:baseline;gap:.6rem;display:flex}.vocab .word{font-size:1.2rem;font-weight:700}.vocab .level{color:var(--accent);letter-spacing:.1em;margin-left:auto}.vocab .example{color:var(--muted);font-style:italic}.tag{background:var(--accent-soft);color:var(--accent);border-radius:6px;margin-right:.3rem;padding:.1rem .5rem;font-size:.8rem;display:inline-block}.tag.warn{color:var(--bad);background:#fdecec}.followups textarea{border:1px solid var(--line);width:100%;font:inherit;border-radius:10px;padding:.6rem}.bubble{white-space:pre-wrap;border-radius:12px;margin:.4rem 0;padding:.6rem .8rem}.bubble.user{background:var(--accent-soft);margin-left:2rem}.bubble.assistant{background:#f1f3f5;margin-right:2rem}.actions{flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:.4rem;display:flex}.actions a{color:var(--accent)}button.collected{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}button.link{color:var(--accent);background:0 0;border:none;padding:.2rem 0}.toast{color:#fff;background:#2b2b2b;border-radius:10px;justify-content:space-between;align-items:center;gap:.5rem;padding:.5rem .8rem;display:flex}.toast button.link{color:#ffd8a8}.note{white-space:pre-wrap;background:#f8f9fa;border-radius:8px;padding:.5rem .7rem;font-size:.92rem}.export{gap:.5rem;margin:.5rem 0 1rem;display:flex}a.button{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:10px;padding:.5rem .9rem;text-decoration:none;display:inline-block}.chips{flex-wrap:wrap;gap:.4rem;display:flex}.chip{border-radius:999px;padding:.25rem .7rem;font-size:.9rem}.review .shot{object-fit:contain;background:#000;border-radius:10px;width:100%;max-height:35vh}.flash .subtitle{margin:.8rem 0}.ratings{grid-template-columns:repeat(4,1fr);gap:.4rem;margin-top:.8rem;display:grid}.ratings .again{border-color:var(--bad);color:var(--bad)}.ratings .good{border-color:var(--ok);color:var(--ok)}.ratings .easy{color:#1971c2;border-color:#1971c2}.followups select{font:inherit;margin-left:.3rem}.review .shot.blurred{filter:blur(10px);transform:scale(1.02)}.answer .head{flex-wrap:wrap;align-items:baseline;gap:.6rem;margin-top:.6rem;display:flex}.answer .word{font-size:1.3rem;font-weight:700}.model-switcher>button{white-space:nowrap;text-overflow:ellipsis;max-width:58vw;overflow:hidden}.lang-row{grid-template-columns:6.5rem 1fr auto;align-items:center;gap:.4rem;margin:.5rem 0;display:grid}.lang-row select{font:inherit;border:1px solid var(--line);background:var(--card);border-radius:10px;width:100%;padding:.6rem .3rem}.lang-row .field{min-width:0;margin:0}.me form.card>button{margin:.3rem .4rem 0 0}.password-field{position:relative}.password-field .field{padding-right:3rem}.password-field .eye{background:0 0;border:none;padding:.3rem .5rem;font-size:1.2rem;position:absolute;top:50%;right:.3rem;transform:translateY(-50%)}.suggestions{flex-wrap:wrap;gap:.4rem;margin:.5rem 0;display:flex}.suggestions .chip{text-align:left;background:var(--accent-soft);color:var(--ink);border-color:#0000}button.back{background:0 0;border:none;padding:0}.toast.floating{left:50%;bottom:calc(4.2rem + env(safe-area-inset-bottom));z-index:20;width:calc(100% - 2rem);max-width:608px;position:fixed;transform:translate(-50%);box-shadow:0 6px 20px #0003}.section-head{justify-content:space-between;align-items:center;gap:.5rem;margin:.5rem 0;display:flex}.section-head h2{margin:0}.earlier ul{margin:.4rem 0 0;padding-left:1.1rem}.earlier li{margin:.3rem 0}.earlier li button.link{margin-left:.5rem;font-size:.85rem}button.speak{background:0 0;border:none;padding:.1rem .3rem;font-size:1rem;line-height:1}.form-actions{align-items:center;gap:.8rem;margin-top:.4rem;display:flex}.due-badge{background:var(--bad);color:#fff;text-align:center;vertical-align:top;border-radius:999px;min-width:1.2rem;margin-left:.25rem;padding:0 .35rem;font-size:.72rem;line-height:1.2rem;display:inline-block}.kbd-hint{opacity:.6;margin-left:.3rem;font-size:.75em}@media (hover:none){.kbd-hint{display:none}}@media (width<=480px){.lang-row{grid-template-columns:5.4rem 1fr auto}.lang-row select{font-size:.9rem}.lang-row>button{padding:.5rem .6rem}}.form-actions button.clear{background:0 0;border:none;padding:.3rem .5rem;font-size:1.3rem;line-height:1}.text-lookup{gap:.5rem;margin:.3rem 0;display:flex}.text-lookup .field{flex:1;min-width:0;margin:0}.text-lookup button{flex:none;padding:.5rem 1.1rem}.queue-item .thumb-text{background:var(--accent-soft);border-radius:8px;flex:none;justify-content:center;align-items:center;width:88px;height:56px;font-size:1.6rem;display:flex}.typed-source{background:var(--card);border:1px solid var(--line);word-break:break-word;border-radius:12px;padding:.8rem 1rem;font-size:1.05rem}