:root{--bg: #e9e6e1;--surface: #ffffff;--surface-soft: #f4f2ef;--ink: #161616;--on-ink: #ffffff;--text: #161616;--text-2: #8c8984;--line: #dcd8d2;--line-dash: #c9c4bd;--highlight: #f2d66b;--on-highlight: #5a4708;--good: #8db87f;--good-text: #4f7a43;--warn: #e8b04b;--bad: #e2876b;--bad-soft: #f3d5cb;--bad-text: #7a3a26;--radius-card: 22px;--radius-tile: 18px;--pill: 999px;--gutter: 20px;--nav-h: 60px;--font: "Manrope", "Noto Sans TC", system-ui, -apple-system, "PingFang TC", sans-serif;--ease: cubic-bezier(.2, .8, .2, 1);color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #141413;--surface: #1f1e1c;--surface-soft: #2a2926;--ink: #f4f2ef;--on-ink: #161616;--text: #f4f2ef;--text-2: #9c9993;--line: #34322f;--line-dash: #4a4743;--bad-soft: #4a2a20;--bad-text: #f3c2b2;--good-text: #a9d19c;color-scheme:dark}}:root[data-theme=dark]{--bg: #141413;--surface: #1f1e1c;--surface-soft: #2a2926;--ink: #f4f2ef;--on-ink: #161616;--text: #f4f2ef;--text-2: #9c9993;--line: #34322f;--line-dash: #4a4743;--bad-soft: #4a2a20;--bad-text: #f3c2b2;--good-text: #a9d19c;color-scheme:dark}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font)}body{font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}button{font:inherit;color:inherit;border:0;background:none;padding:0;cursor:pointer}input,select{font:inherit;color:inherit}h1,h2,h3,p{margin:0}.page{min-height:100dvh;max-width:520px;margin:0 auto;padding:calc(env(safe-area-inset-top) + 16px) var(--gutter) calc(env(safe-area-inset-bottom) + var(--nav-h) + 40px);display:flex;flex-direction:column;gap:12px}.page--full{padding-bottom:calc(env(safe-area-inset-bottom) + 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12px;border-radius:var(--pill);font-size:12px;white-space:nowrap;background:var(--surface)}.pill--ink{background:var(--ink);color:var(--on-ink)}.pill--soft{background:var(--surface-soft)}.pill--bad{background:var(--bad-soft);color:var(--bad-text)}.pill--hl{background:var(--highlight);color:var(--on-highlight)}.pill--lg{height:36px;padding:0 14px;font-size:13px}.dot{width:7px;height:7px;border-radius:50%;display:inline-block}.badge-circle{width:44px;height:44px;border-radius:50%;background:var(--surface-soft);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:500;flex-shrink:0}.badge-circle--due{background:var(--bad-soft);color:var(--bad-text)}.seg{display:inline-flex;background:var(--surface);border-radius:var(--pill);padding:4px;align-self:flex-start}.seg button{height:34px;padding:0 16px;border-radius:var(--pill);color:var(--text-2);font-size:14px;transition:background .2s var(--ease),color .2s}.seg 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span[data-l="2"]{background:var(--ink)}.option{width:100%;min-height:56px;border-radius:var(--pill);background:var(--surface);padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:8px;text-align:left;font-size:15px;transition:background .2s,color .2s,transform .15s var(--ease)}.option:active{transform:scale(.98)}.option--correct{background:var(--ink);color:var(--on-ink)}.option--wrong{background:var(--bad-soft);color:var(--bad-text);animation:shake .35s}.option--dim{opacity:.5}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}@keyframes pop{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}@keyframes fadeUp{0%{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}.pop{animation:pop .25s var(--ease)}.fade-up{animation:fadeUp .25s var(--ease)}.nav{position:fixed;left:0;right:0;bottom:calc(env(safe-area-inset-bottom) + 14px);z-index:20;display:flex;justify-content:center;pointer-events:none}.nav__inner{width:100%;max-width:520px;padding:0 var(--gutter);display:flex;gap:8px;align-items:center}.nav__bar{flex:1;height:var(--nav-h);background:var(--surface);border-radius:var(--pill);display:flex;align-items:center;justify-content:space-around;padding:0 6px;pointer-events:auto;box-shadow:0 6px 24px #0000000f}.nav__item{height:44px;min-width:44px;border-radius:var(--pill);display:inline-flex;align-items:center;justify-content:center;gap:6px;color:var(--text-2);padding:0 10px;transition:background .2s var(--ease),color .2s;font-size:13px;font-weight:500;white-space:nowrap;flex-shrink:0;text-decoration:none}.hscroll{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;margin:0 calc(var(--gutter) * -1);padding:0 var(--gutter)}.hscroll::-webkit-scrollbar{display:none}.nav__item--active{background:var(--ink);color:var(--on-ink);padding:0 14px}.fab{width:var(--nav-h);height:var(--nav-h);border-radius:50%;background:var(--ink);color:var(--on-ink);display:inline-flex;align-items:center;justify-content:center;pointer-events:auto;box-shadow:0 6px 24px #0000001f;transition:transform .2s var(--ease)}.fab[aria-expanded=true]{transform:rotate(45deg)}.scrim{position:fixed;top:0;right:0;bottom:0;left:0;background:#14141359;z-index:30;animation:fadeIn .2s}@keyframes fadeIn{0%{opacity:0}}.sheet{position:fixed;left:0;right:0;bottom:0;z-index:31;display:flex;justify-content:center;animation:sheetUp .25s var(--ease)}@keyframes sheetUp{0%{transform:translateY(100%)}}.sheet__inner{width:100%;max-width:520px;background:var(--bg);border-radius:28px 28px 0 0;padding:10px var(--gutter) calc(env(safe-area-inset-bottom) + 20px);display:flex;flex-direction:column;gap:10px;max-height:85dvh;overflow-y:auto}.sheet__grip{width:40px;height:5px;border-radius:3px;background:var(--line);align-self:center;margin-bottom:6px}.field{height:48px;border-radius:var(--pill);background:var(--surface);border:0;padding:0 18px;width:100%;outline:none}.field:focus{box-shadow:0 0 0 2px var(--ink)}.switch{width:46px;height:28px;border-radius:999px;background:var(--line);position:relative;transition:background .2s;flex-shrink:0}.switch:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .2s var(--ease)}.switch[aria-checked=true]{background:var(--ink)}.switch[aria-checked=true]:after{transform:translate(18px);background:var(--on-ink)}.stepper{display:inline-flex;align-items:center;gap:4px;background:var(--surface-soft);border-radius:var(--pill);padding:3px}.stepper button{width:32px;height:32px;border-radius:50%;background:var(--surface)}.stepper span{min-width:34px;text-align:center;font-weight:500}.list-row{display:flex;align-items:center;gap:12px}.rec-btn{width:72px;height:72px;border-radius:50%;background:var(--ink);color:var(--on-ink);display:inline-flex;align-items:center;justify-content:center;position:relative;transition:background .2s,transform .15s var(--ease)}.rec-btn:active{transform:scale(.95)}.rec-btn--on{background:var(--bad);color:#fff}.rec-btn--on:after{content:"";position:absolute;top:-6px;right:-6px;bottom:-6px;left:-6px;border-radius:50%;border:2px solid var(--bad);animation:ring 1.2s ease-out infinite}@keyframes ring{0%{transform:scale(.9);opacity:.9}to{transform:scale(1.25);opacity:0}}.spin{animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.read-text{font-size:20px;line-height:1.8}.w{border-radius:6px;padding:0 1px;cursor:pointer;transition:background .12s,color .12s}.w--play{background:var(--ink);color:var(--on-ink)}.w--good{color:var(--good-text)}.w--warn{color:#9a6a12;text-decoration:underline wavy var(--warn);text-underline-offset:4px}.w--bad{color:var(--bad-text);background:var(--bad-soft);text-decoration:underline var(--bad);text-underline-offset:4px}.w--omit{color:var(--text-2);text-decoration:line-through}.ins{font-size:12px;color:var(--bad-text);vertical-align:super;margin:0 2px}.sentence--dim{opacity:.4}.sentence--active{background:var(--surface-soft);border-radius:12px;margin:0 -8px;padding:2px 8px}.dock{position:fixed;left:0;right:0;bottom:0;z-index:15;display:flex;justify-content:center;pointer-events:none}.dock__inner{width:100%;max-width:520px;padding:10px var(--gutter) calc(env(safe-area-inset-bottom) + 12px);display:flex;align-items:center;justify-content:space-between;background:linear-gradient(to top,var(--bg) 70%,transparent);pointer-events:auto}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .w--warn{color:#f0c46a}}:root[data-theme=dark] .w--warn{color:#f0c46a}.word-big{font-size:40px;font-weight:500;letter-spacing:-.02em;line-height:1.15}.ipa{font-size:15px;color:var(--text-2)}.combo{font-size:28px;font-weight:600}