:root{--bg: #fbfaf7;--surface: #ffffff;--text: #1f1d1a;--muted: #77716a;--line: #e6e1d8;--accent: #8a3b2e;--accent-soft: #f3e3df;--mark: #fbe7a1;--saved: #c98a3c;--shadow: 0 8px 30px rgba(40, 30, 20, .16);--danger: #b3261e;--zh: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;--ui: -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "PingFang SC", sans-serif;--top: env(safe-area-inset-top, 0px);--bottom: env(safe-area-inset-bottom, 0px);--ink-ink: #1d2433;--ink-red: #d03a2b;--ink-blue: #2563c9;--ink-marker: rgba(255, 214, 0, .38);color-scheme:light}[data-theme=sepia]{--bg: #f4ecd8;--surface: #fbf5e6;--text: #3b2f20;--muted: #86765f;--line: #e0d3b6;--accent: #8a4b22;--accent-soft: #ecdcc0;--mark: #f3d98b;--saved: #b07030;--ink-ink: #2b2318}[data-theme=dark]{--bg: #161514;--surface: #232120;--text: #dcd6cc;--muted: #8f887e;--line: #34312d;--accent: #e0907f;--accent-soft: #3a2723;--mark: #5b4a1d;--saved: #d6a052;--shadow: 0 8px 30px rgba(0, 0, 0, .5);--danger: #ff8a80;--ink-ink: #ece6da;--ink-red: #ff7a6b;--ink-blue: #7fb0ff;--ink-marker: rgba(255, 214, 0, .28);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--ui);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}button,input,select{font:inherit;color:inherit}button{cursor:pointer;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:8px 14px;min-height:40px}button:disabled{opacity:.4;cursor:default}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}[data-theme=dark] button.primary{color:#1a1312}button.danger{color:var(--danger);border-color:var(--danger)}button.big{padding:12px 22px;font-size:17px;min-height:48px}.muted{color:var(--muted)}.fatal,.empty{padding:48px 24px;text-align:center;color:var(--muted);line-height:1.8}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:8px;padding:calc(var(--top) + 6px) 12px 6px;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:transform .25s ease,opacity .25s ease}.topbar h1{flex:1;margin:0;font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar-right{display:flex;gap:4px}.icon-btn{border:none;background:none;font-size:20px;min-width:44px;min-height:44px;padding:0;position:relative}.menu-btn .dot{position:absolute;top:9px;right:8px;width:8px;height:8px;border-radius:50%;background:var(--accent)}.drawer-root{position:fixed;inset:0;z-index:50;pointer-events:none}.drawer-root.open{pointer-events:auto}.scrim{position:absolute;inset:0;background:#00000059;opacity:0;transition:opacity .25s}.drawer-root.open .scrim{opacity:1}.drawer{position:absolute;top:0;bottom:0;left:0;width:min(300px,80vw);background:var(--surface);box-shadow:var(--shadow);transform:translate(-105%);transition:transform .25s ease;padding:calc(var(--top) + 20px) 12px calc(var(--bottom) + 20px)}.drawer-root.open .drawer{transform:none}.drawer-title{font-family:var(--zh);font-size:22px;font-weight:700;padding:4px 12px 18px;color:var(--accent)}.drawer ul{list-style:none;margin:0;padding:0}.drawer a{display:flex;align-items:center;gap:14px;padding:14px 12px;border-radius:10px;color:inherit;text-decoration:none;font-size:17px}.drawer a.current{background:var(--accent-soft);font-weight:600}.drawer a[aria-disabled=true]{opacity:.4}.drawer .icon{width:24px;text-align:center}.badge{margin-left:auto;background:var(--accent);color:#fff;font-size:13px;border-radius:999px;padding:1px 9px}.page{max-width:760px;margin:0 auto;padding:20px 20px calc(var(--bottom) + 40px)}.bar{flex:1;height:6px;border-radius:3px;background:var(--line);overflow:hidden;display:inline-block}.bar>span{display:block;height:100%;background:var(--accent)}.bar.small{width:60px;flex:none}.seg{display:inline-flex;gap:6px}.seg button.on{border-color:var(--accent);background:var(--accent-soft);font-weight:600}.tag{display:inline-block;font-size:12px;border:1px solid var(--accent);color:var(--accent);border-radius:4px;padding:0 5px;margin-right:6px;vertical-align:1px}.note,.count{color:var(--muted);font-size:14px}.shelf{list-style:none;padding:0;margin:0;display:grid;gap:16px}.book{display:flex;gap:18px;width:100%;text-align:left;padding:16px;border-radius:14px}.book-cover{flex:none;width:96px;height:136px;border-radius:6px;background:linear-gradient(160deg,#3a4a55,#1d262c);color:#f1e9da;font-family:var(--zh);font-size:20px;font-weight:700;writing-mode:vertical-rl;white-space:nowrap;display:flex;align-items:center;justify-content:center;letter-spacing:3px;box-shadow:inset -6px 0 #00000040}.book-body{flex:1;min-width:0;display:flex;flex-direction:column}.book-title,.toc-title{font-family:var(--zh);font-size:22px;font-weight:700;margin:0 0 6px}.book-summary{font-family:var(--zh);font-size:15px;line-height:1.8;color:var(--muted);margin:0 0 10px}.book-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}.toc-head{margin-bottom:18px}.toc{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}.toc button{display:flex;align-items:center;gap:14px;width:100%;border:none;border-bottom:1px solid var(--line);border-radius:0;background:none;padding:14px 6px;text-align:left;min-height:56px}.toc-n{color:var(--muted);font-size:14px;width:52px;flex:none}.toc-t{flex:1;font-family:var(--zh);font-size:18px}.toc-state{color:var(--accent);font-weight:700}.reader{height:100dvh;display:flex;flex-direction:column;position:relative}.reader .topbar{position:absolute;left:0;right:0}.reader .topbar.hidden{transform:translateY(-100%);opacity:0;pointer-events:none}.reader-scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.text{max-width:40em;margin:0 auto;padding:calc(var(--top) + 84px) 28px calc(var(--bottom) + 60px);font-family:var(--zh);font-size:var(--fs, 21px);line-height:1.95;letter-spacing:.02em;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.chapter-title{font-size:1.35em;text-align:center;margin:0 0 1.6em;font-weight:700}.chapter-title span{display:block;font-size:.6em;color:var(--muted);font-weight:400;letter-spacing:.2em}.text p{margin:0 0 .9em;text-indent:2em;text-align:justify}.text p.msg{text-indent:0;margin-left:1.2em;padding:.25em .8em;border-left:3px solid var(--line);font-size:.95em}.w{cursor:pointer;border-radius:3px;transition:background-color .15s}.w.saved{text-decoration:underline;text-decoration-color:var(--saved);text-decoration-thickness:2px;text-underline-offset:.3em}.w.active{background:var(--mark)}.w.flash{animation:flash 2s ease-out}@keyframes flash{0%,40%{background:var(--mark)}to{background:transparent}}.sheet-outer{padding:var(--top) 0 var(--bottom)}.sheet-frame{margin:0 auto;position:relative}.text.sheet{max-width:none;margin:0;padding:84px 28px 60px;transform-origin:0 0;position:relative}.text.sheet.narrow{padding-left:18px;padding-right:18px}.ink-layer{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}.ink-marker{fill:none;stroke-linecap:round;stroke-linejoin:round}.pen-on .text.sheet{cursor:crosshair}.icon-btn.on{background:var(--accent-soft);color:var(--accent)}.ink-bar{position:absolute;z-index:15;left:50%;bottom:calc(var(--bottom) + 16px);transform:translate(-50%);display:flex;gap:6px;align-items:center;padding:8px;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.ink-tool{width:46px;min-height:46px;padding:0;display:grid;place-items:center;font-size:18px}.ink-tool.on{border-color:var(--accent);box-shadow:inset 0 0 0 2px var(--accent)}.ink-dot{width:20px;height:20px;border-radius:50%;display:block}.ink-dot.marker{width:26px;height:12px;border-radius:4px;background:#ffd600bf}.ink-done{min-height:46px;margin-left:4px}.ink-notice{position:absolute;z-index:12;left:50%;top:calc(var(--top) + 64px);transform:translate(-50%);display:flex;gap:10px;align-items:center;max-width:calc(100% - 24px);padding:6px 8px 6px 14px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);font-size:14px;color:var(--muted)}.ink-notice button{min-height:34px;padding:4px 10px;white-space:nowrap}.chapter-end{margin:3em 0 1em;padding-top:1.5em;border-top:1px solid var(--line);text-align:center;font-family:var(--ui);font-size:16px;color:var(--muted)}.font-panel{position:absolute;z-index:20;right:12px;top:calc(var(--top) + 60px);background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:14px;display:grid;gap:12px}.font-panel .seg button{min-width:64px}.swatch.light{background:#fbfaf7;color:#1f1d1a}.swatch.sepia{background:#f4ecd8;color:#3b2f20}.swatch.dark{background:#161514;color:#dcd6cc}.swatch.on{outline:2px solid var(--accent);outline-offset:1px}.word-card{position:fixed;z-index:30;width:min(340px,calc(100vw - 24px));background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:12px 14px 14px;animation:pop .12s ease-out}@keyframes pop{0%{opacity:0;transform:translateY(-4px)}}.word-card.above{animation-name:pop-up}@keyframes pop-up{0%{opacity:0;transform:translateY(4px)}}.wc-head{display:flex;align-items:baseline;gap:10px}.wc-word{font-family:var(--zh);font-size:26px;font-weight:700}.wc-py{font-size:18px;color:var(--accent);flex:1}.star{border:none;background:none;font-size:26px;color:var(--saved);min-width:44px;padding:0;align-self:center}.wc-mean{font-size:17px;line-height:1.6;margin-top:4px}.wc-note{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.6}.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.search{flex:1;min-width:200px;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:9px 12px;font-size:16px}select{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:9px 10px}.word-list{list-style:none;padding:0;margin:0}.group-head{font-size:13px;color:var(--muted);padding:18px 4px 6px}.word-row{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}.word-row .delete{position:absolute;right:0;top:0;bottom:0;width:96px;border:none;border-radius:0;background:var(--danger);color:#fff}.word-row-inner{position:relative;background:var(--bg);padding:12px 4px;transition:transform .2s ease;cursor:pointer}.wr-top{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.wr-word{font-family:var(--zh);font-size:22px;font-weight:700}.wr-py{color:var(--accent)}.wr-mean{flex:1;min-width:10em}.wr-sentence{margin-top:4px;font-size:15px;color:var(--muted);line-height:1.7}.sentence{font-family:var(--zh)}.sentence mark{background:var(--mark);color:inherit;border-radius:2px;padding:0 1px}.review{display:flex;flex-direction:column;align-items:center;gap:18px}.flashcard{width:100%;max-width:560px;min-height:300px;border-radius:20px;box-shadow:var(--shadow);padding:32px 24px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center}.fc-word{font-family:var(--zh);font-size:52px;font-weight:700}.fc-sentence{font-size:18px;line-height:1.8;color:var(--muted)}.fc-back{border-top:1px solid var(--line);padding-top:14px;width:100%}.fc-py{font-size:24px;color:var(--accent)}.fc-mean{font-size:20px;margin-top:6px;line-height:1.6}.hint-toggle{display:flex;gap:8px;align-items:center;color:var(--muted)}.hint-toggle input{width:20px;height:20px}.grades{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:100%;max-width:560px}.grade{display:flex;flex-direction:column;align-items:center;gap:2px;min-height:64px;font-size:16px}.grade small{color:var(--muted);font-size:12px}.grade.again{border-color:var(--danger);color:var(--danger)}.grade.good{border-color:var(--accent)}.review-done{text-align:center;padding:40px 0}.big-text{font-size:22px}.settings section{border-bottom:1px solid var(--line);padding:8px 0 22px}.settings h2{font-size:15px;color:var(--muted);font-weight:600}.settings .row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:8px 0}.settings .sample{font-family:var(--zh);text-align:center;margin:16px 0 0}.buttons{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.confirm{margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.confirm p{margin-top:0}.message{color:var(--accent)}@media (max-width: 600px){.text{padding-left:18px;padding-right:18px}.book-cover{width:72px;height:104px;font-size:15px;letter-spacing:1px}}.ink-list{list-style:none;margin:0 auto;padding:0 16px;max-width:760px}.ink-list li+li{margin-top:8px}.ink-list button{width:100%;display:flex;align-items:center;gap:12px;text-align:left;padding:12px 14px}.ink-list-main{flex:1;display:grid;gap:4px}.ink-list-title{font-weight:600}.ink-list-meta{font-size:13px;color:var(--muted)}.toc-ink{color:var(--accent);font-size:.9em}
