:root{color:#2d352f;background:#e7e0d2;font-family:Inter,Noto Sans TC,system-ui,sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 15% 5%,#f5eee1 0,transparent 32rem),#e7e0d2}button,input{font:inherit}button{color:inherit}main{width:min(100%,46rem);min-height:100vh;margin:0 auto;padding:max(2rem,env(safe-area-inset-top)) max(1.25rem,env(safe-area-inset-right)) max(2rem,env(safe-area-inset-bottom));padding-left:max(1.25rem,env(safe-area-inset-left))}.eyebrow{color:#6d766f;font-size:.82rem;letter-spacing:.08em}.library-list{display:grid;gap:1rem}.book-card{display:grid;gap:.55rem;width:100%;padding:1.4rem;text-align:left;border:1px solid #c9beaa;border-radius:1rem;background:#f7f1e5;box-shadow:0 .55rem 1.4rem #383e391a}.book-card span{font:600 1.35rem/1.4 Yu Mincho,Hiragino Mincho ProN,serif}.login-shell form{display:grid;gap:1rem;padding:1.4rem;border-radius:1rem;background:#f7f1e5}.login-shell label{display:grid;gap:.4rem}.login-shell input{width:100%;padding:.8rem;border:1px solid #a99d89;border-radius:.6rem;background:#fffdf8}.install-guidance{margin-top:1.5rem;color:#626b64;font-size:.9rem}.install-guidance details{padding-top:.8rem;border-top:1px solid #c9beaa}.install-guidance summary{width:fit-content;cursor:pointer;color:#46554a}.install-guidance p{max-width:32rem;margin-bottom:0;line-height:1.6}.login-shell button,.reader-header button{padding:.7rem 1rem;border:0;border-radius:.7rem;color:#fff;background:#5d6d61}.reader-shell{--reader-title-size: 2rem;--reader-story-size: 1.3rem;--reader-assistance-size: 1rem;display:flex;flex-direction:column;height:100dvh;overflow:hidden;background:#f7f1e5}.reader-shell[data-reader-text-size=small]{--reader-title-size: 1.75rem;--reader-story-size: 1.1rem;--reader-assistance-size: .9rem}.reader-shell[data-reader-text-size=large]{--reader-title-size: 2.2rem;--reader-story-size: 1.5rem;--reader-assistance-size: 1.125rem}.reader-shell[data-reader-text-size=extra-large]{--reader-title-size: 2.5rem;--reader-story-size: 1.75rem;--reader-assistance-size: 1.25rem}.reader-header{flex:0 0 auto;display:flex;gap:.75rem;align-items:center;justify-content:space-between;color:#667068}.reader-header-actions{display:flex;gap:.65rem;align-items:center;min-width:0}.reader-header .reader-settings-toggle{min-width:2.75rem;min-height:2.75rem;padding:.45rem;border:1px solid #5d6d61;color:#46554a;background:#fffaf0}.reader-settings-panel{position:fixed;top:max(5.5rem,calc(env(safe-area-inset-top) + 4rem));right:max(1rem,env(safe-area-inset-right));z-index:20;width:min(calc(100% - 2rem),20rem);padding:1rem;border:1px solid #c9beaa;border-radius:.9rem;background:#fffaf0;box-shadow:0 .8rem 2rem #2a2f2b2e}.reader-settings-panel p{margin:0 0 .75rem;font-weight:600}.reader-text-size-options,.reader-furigana-options{display:grid;gap:.4rem}.reader-text-size-options{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:1rem}.reader-furigana-options{grid-template-columns:repeat(2,minmax(0,1fr))}.reader-text-size-options button,.reader-furigana-options button{min-height:2.75rem;padding:.45rem .25rem;border:1px solid #a99d89;border-radius:.6rem;background:#f7f1e5}.reader-text-size-options button[aria-pressed=true],.reader-furigana-options button[aria-pressed=true]{border-color:#406a62;color:#fff;background:#406a62}.reading-viewport{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain}.reading-viewport.sentence-focused{overflow:hidden;touch-action:none}.reading-audio-control{min-height:2.75rem;padding:.55rem .9rem;border:1px solid #5d6d61;border-radius:999px;color:#37483d;background:#fffaf0;touch-action:manipulation}.reading-audio-control:disabled{opacity:.7}.reading-audio-status{margin:.5rem max(1rem,env(safe-area-inset-right)) 0;color:#46554a;text-align:right}.reading-audio-help{margin:.35rem 0 0;color:#626b64;font-size:var(--reader-assistance-size);line-height:1.5}.reader-shell article h1{margin:3rem 0 2rem;font-size:var(--reader-title-size);font-family:Yu Mincho,Hiragino Mincho ProN,serif}.reading-copy{display:grid;gap:2rem;padding-bottom:10rem}.reading-copy section{display:flex;flex-direction:column;padding:.75rem .8rem;border-left:3px solid transparent;border-radius:0 .8rem .8rem 0}.reading-copy section.current-sentence{border-left-color:#b55d43;background:#eee1c9;box-shadow:0 .4rem 1.2rem #463e301a}.reading-copy section.focused-sentence{margin-top:clamp(.5rem,2vh,1rem);padding:1.25rem 1rem;border:1px solid #c98668;border-left-width:5px;border-radius:1rem;background:#f0ddbd;box-shadow:0 1rem 2.5rem #463e302e}.reading-copy section.focused-sentence>.reading-audio-control{order:-1;align-self:flex-start;margin-bottom:.6rem}.reading-copy p{margin:0;font-family:Yu Mincho,Hiragino Mincho ProN,serif;font-size:var(--reader-story-size);font-weight:400;line-height:2.2;overflow-wrap:anywhere}.reading-copy ruby{ruby-position:over}.reading-copy rt{font-size:.5em;line-height:1}.reader-shell[data-reader-furigana=all] .reading-copy p{line-height:2.4}.word{margin:0;padding:0 .02em;border:0;border-bottom:1px solid transparent;background:transparent}.word:focus-visible,.word:hover{border-bottom-color:#b55d43;outline:none}.word-sheet{position:fixed;right:0;bottom:0;left:0;z-index:10;display:flex;flex-direction:column;max-height:min(36dvh,calc(100dvh - max(7rem,env(safe-area-inset-top))));max-width:46rem;margin:auto;padding:1.2rem max(1.4rem,env(safe-area-inset-right)) max(1.4rem,env(safe-area-inset-bottom)) max(1.4rem,env(safe-area-inset-left));border:1px solid #c9beaa;border-radius:1.3rem 1.3rem 0 0;background:#fffaf0;box-shadow:0 -1rem 3rem #2a2f2b2e;font-size:var(--reader-assistance-size);overflow:hidden}.word-sheet>button{float:right;flex:0 0 auto;width:2.75rem;height:2.75rem;border:0;border-radius:50%;color:#fff;background:#5d6d61;font-size:1.4rem}.hint-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.35rem;padding-right:3rem}.hint-tab{min-height:2.75rem;padding:.55rem .35rem;border:1px solid #a99d89;border-radius:.7rem;color:#46554a;background:#f7f1e5}.hint-tab[aria-selected=true]{border-color:#406a62;color:#fff;background:#406a62}.hint-tab:disabled{color:#77756e;border-style:dashed;background:#e6e0d5}.viewed-mark{margin-left:.3rem;font-weight:700}.locked-reason{margin:.5rem 0 0;color:#6d766f;font-size:.82rem;text-align:right}.hint-panel{min-height:0;max-height:min(40dvh,22rem);overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;padding-bottom:.35rem}.word-details{display:grid;gap:.35rem;margin:.75rem 0 0}.word-details div{display:grid;grid-template-columns:4rem 1fr;gap:.5rem}.word-details dt{color:#6d766f}.word-details dd{margin:0}.hint-error{display:flex;gap:.75rem;align-items:center;justify-content:space-between;margin:.75rem 0;padding:.7rem;border:1px solid #b55d43;border-radius:.7rem;background:#f8e7df}.hint-error p{margin:0}.hint-error button{min-height:2.75rem;padding:.45rem .8rem;border:0;border-radius:.6rem;color:#fff;background:#5d6d61;white-space:nowrap}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.word-sheet p{display:flex;gap:.8rem;align-items:baseline;line-height:1.65}.word-sheet strong{font-family:Yu Mincho,Hiragino Mincho ProN,serif;font-size:1.7em;font-weight:600}@media(max-width:420px){.reader-header{align-items:flex-start}.reader-header-actions{gap:.45rem}.reader-header-actions [aria-label=同步狀態]{max-width:5.5rem;line-height:1.25;text-align:right}.hint-tab{padding-inline:.2rem}}