:root{--bg:#f6f3ee;--panel:#fffdfa;--panel-strong:#fff;--ink:#20242b;--muted:#737984;--soft:#e7dfd2;--line:#dad3c7;--line-strong:#c9beb0;--accent:#2f7d6d;--accent-ink:#184f45;--danger:#b64a4a;--shadow:0 18px 50px #221c141a;--ease-out:cubic-bezier(.23, 1, .32, 1);--ease-in-out:cubic-bezier(.77, 0, .175, 1);--ease-drawer:cubic-bezier(.32, .72, 0, 1);--sans:Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--serif:"Noto Serif SC", "Songti SC", STSong, Georgia, "Times New Roman", serif;color:var(--ink);background:var(--bg);font-family:var(--sans);font-synthesis:none;letter-spacing:0;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,input,select,textarea{font:inherit}button,label,select{-webkit-tap-highlight-color:transparent}button{border:0}textarea{resize:vertical}#root{min-height:100vh}.app-shell{background:linear-gradient(90deg, #dad3c785 1px, transparent 1px), linear-gradient(180deg, #dad3c773 1px, transparent 1px), var(--bg);background-size:48px 48px;grid-template-columns:280px minmax(0,1fr) 360px;height:100vh;display:grid}.mobile-panel{display:contents}.mobile-panel--me{z-index:50;background:var(--panel-strong);width:min(440px,100vw - 28px);transition:transform .28s var(--ease-drawer);pointer-events:auto;display:block;position:fixed;top:0;bottom:0;right:0;overflow:hidden;transform:translate(104%);box-shadow:-18px 0 60px #1816122e}.mobile-panel--me.mobile-panel--open{transform:translate(0)}.mobile-panel__header,.mobile-panel-scrim,.mobile-reader-nav{display:none}.mobile-panel--me .mobile-panel__header{border-bottom:1px solid var(--line);height:52px;color:var(--ink);background:#fffdfaf7;justify-content:space-between;align-items:center;padding:0 12px 0 16px;font-size:14px;font-weight:850;display:flex}.library-sidebar,.workflow-panel{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffdfaf0;height:100vh;min-height:0}.library-sidebar{border-right:1px solid var(--line);flex-direction:column;gap:18px;padding:20px;display:flex;overflow:hidden}.library-sidebar__brand{align-items:center;gap:12px;display:flex}.library-sidebar__mark,.empty-reader__icon{color:#fffaf0;background:#21313d;border-radius:8px;place-items:center;width:44px;height:44px;display:grid}.library-sidebar__brand strong{font-size:17px;line-height:1.2;display:block}.library-sidebar__brand span,.library-sidebar__heading,.book-row__meta,.book-row__progress,.eyebrow,.workflow-panel__description,.notes-list__empty,.note-card__location{color:var(--muted)}.library-sidebar__brand span{margin-top:2px;font-size:13px;display:block}.account-button{border:1px solid var(--line);min-height:54px;color:var(--ink);cursor:pointer;text-align:left;background:#ffffffc7;border-radius:8px;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:9px;padding:8px;display:grid}.account-button:hover{border-color:var(--line-strong);background:#fff}.account-button__icon{color:#fff;background:#21313d;border-radius:8px;place-items:center;width:34px;height:34px;display:grid}.account-button__main{gap:2px;min-width:0;display:grid}.account-button__main span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.account-button__main span:first-child{font-size:13px;font-weight:850}.account-button__main span:last-child{color:var(--muted);font-size:12px;font-weight:700}.upload-button,.empty-reader__upload,.primary-button,.admin-open-button{cursor:pointer;color:#fff;background:#2f7d6d;border-radius:7px;justify-content:center;align-items:center;gap:8px;min-height:42px;transition:background .2s,transform .2s;display:inline-flex}.upload-button:hover,.empty-reader__upload:hover,.primary-button:hover,.admin-open-button:hover{background:#286b5e}.upload-button:active,.empty-reader__upload:active,.primary-button:active,.admin-open-button:active{transform:translateY(1px)}.admin-open-button{background:#21313d;font-size:13px;font-weight:850}.upload-button input,.empty-reader__upload input{opacity:0;pointer-events:none;position:absolute}.library-sidebar__heading{letter-spacing:0;text-transform:uppercase;align-items:center;gap:7px;font-size:13px;font-weight:700;display:flex}.book-list{flex-direction:column;gap:9px;min-height:0;display:flex;overflow:auto}.book-list__empty{border:1px dashed var(--line-strong);color:var(--muted);border-radius:8px;margin:0;padding:14px;font-size:14px}.book-row{text-align:left;width:100%;min-height:104px;color:var(--ink);cursor:pointer;background:#ffffffc7;border:1px solid #0000;border-radius:8px;padding:13px 36px 13px 15px;position:relative;overflow:hidden}.book-row--active{border-color:var(--line-strong);box-shadow:var(--shadow);background:var(--panel-strong)}.book-row__stripe{width:4px;height:100%;position:absolute;top:0;left:0}.book-row__main{gap:5px;display:grid}.book-row__title{font-weight:760;line-height:1.25}.book-row__meta,.book-row__progress{font-size:12px}.book-row__delete{width:28px;height:28px;color:var(--muted);border-radius:6px;place-items:center;display:grid;position:absolute;top:10px;right:8px}.book-row__delete:hover{color:var(--danger);background:#b64a4a1a}.reader-column{grid-template-rows:auto minmax(0,1fr);gap:16px;min-width:0;height:100vh;min-height:0;padding:22px;display:grid}.lazy-fallback{min-width:0;min-height:0;color:var(--muted);place-items:center;font-size:14px;font-weight:750;display:grid}.lazy-fallback--reader{background:#fffdfabd;border:1px solid #94897438;border-radius:8px;height:100%}.lazy-fallback--workflow{border-left:1px solid var(--line);background:#fffdfaf0;height:100vh}.book-header{justify-content:space-between;align-items:flex-end;gap:16px;min-height:70px;padding:0 4px;display:flex}.eyebrow{letter-spacing:0;text-transform:uppercase;font-size:12px;font-weight:800;display:block}.book-header h1,.empty-reader h1,.workflow-panel h2{color:var(--ink);letter-spacing:0;margin:0}.book-header h1{font-size:clamp(24px,3vw,38px);line-height:1.08}.book-header__progress{min-width:86px;color:var(--accent-ink);text-align:center;background:#2f7d6d1f;border-radius:7px;flex:none;padding:7px 11px;font-size:13px;font-weight:750}.reader-stage{border:1px solid var(--line);background:var(--panel);min-height:0;box-shadow:var(--shadow);--reader-brightness:.92;border-radius:8px;grid-template-rows:auto auto minmax(0,1fr);display:grid;position:relative;overflow:hidden}.reader-stage--fullscreen{width:100vw;height:100dvh;box-shadow:none;border:0;border-radius:0;grid-template-rows:minmax(0,1fr)}.reader-stage:fullscreen{width:100vw;height:100dvh;box-shadow:none;border:0;border-radius:0;grid-template-rows:minmax(0,1fr)}.reader-stage--fullscreen{z-index:90;position:fixed;inset:0}.reader-stage--fullscreen.reader-stage--fullscreen-menu-open{grid-template-rows:auto auto minmax(0,1fr)}.reader-stage:fullscreen.reader-stage--fullscreen-menu-open{grid-template-rows:auto auto minmax(0,1fr)}.reader-stage--narration{grid-template-rows:auto auto minmax(0,1fr) auto}.reader-stage--fullscreen.reader-stage--narration{grid-template-rows:minmax(0,1fr) auto}.reader-stage:fullscreen.reader-stage--narration{grid-template-rows:minmax(0,1fr) auto}.reader-stage--fullscreen.reader-stage--fullscreen-menu-open.reader-stage--narration{grid-template-rows:auto auto minmax(0,1fr) auto}.reader-stage:fullscreen.reader-stage--fullscreen-menu-open.reader-stage--narration{grid-template-rows:auto auto minmax(0,1fr) auto}.reader-stage__toolbar{border-bottom:1px solid var(--line);background:#fffdfaed;justify-content:center;align-items:center;gap:5px;min-height:52px;padding:8px 5px;display:flex;overflow:auto hidden}.reader-stage--paper .reader-stage__surface{background:#f2ead7}.reader-stage--green .reader-stage__surface{background:#dce8d2}.reader-stage--night .reader-stage__surface{background:#15191f}.icon-button,.ghost-icon-button{width:36px;height:36px;color:var(--ink);cursor:pointer;background:0 0;border-radius:7px;place-items:center;display:grid}.icon-button:hover,.ghost-icon-button:hover{background:#20242b12}.reader-stage__status{max-width:280px;min-height:36px;color:var(--muted);background:#20242b0f;border-radius:7px;justify-content:center;align-items:center;gap:7px;padding:0 12px;font-size:13px;font-weight:700;display:inline-flex}.reader-stage__status span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.reader-stage__status--chapter{max-width:220px}.reader-stage__navigator{border-bottom:1px solid var(--line);background:#fffdfadb;align-items:flex-start;gap:8px;min-height:48px;padding:8px;display:flex}.reader-nav-control{min-height:36px;color:var(--muted);background:#20242b0f;border-radius:7px;align-items:center;gap:7px;padding:0 9px;font-size:13px;font-weight:750;display:inline-flex}.reader-nav-control span{flex:none}.reader-nav-control select,.reader-nav-control input{border:1px solid var(--line);min-width:0;height:28px;color:var(--ink);font:inherit;background:#fff;border-radius:6px;padding:0 7px}.reader-nav-control select:disabled,.reader-nav-control input:disabled,.small-tool-button:disabled{cursor:not-allowed;opacity:.56}.reader-nav-control--chapter{flex:260px}.reader-nav-control--volume{flex:0 220px}.reader-nav-control--volume select,.reader-nav-control--chapter select{width:100%}.reader-nav-control--location{flex:none}.reader-nav-control--location input{text-align:center;width:72px}.reader-search{flex:none;align-items:center;gap:7px;display:flex}.reader-search--open{flex:300px;min-width:260px}.reader-nav-control--search{flex:auto}.reader-nav-control--search input{width:100%}.small-tool-button{min-height:36px;color:var(--accent-ink);cursor:pointer;background:#2f7d6d1f;border-radius:7px;padding:0 11px;font-size:13px;font-weight:800}.reader-search-results{border:1px solid var(--line);background:#fff;border-radius:8px;flex:1 0 100%;gap:6px;max-height:178px;padding:7px;display:grid;overflow:auto}.reader-search-results__summary{color:var(--muted);font-size:12px;font-weight:800}.reader-search-result{width:100%;color:var(--ink);text-align:left;cursor:pointer;background:#20242b0a;border-radius:7px;gap:3px;padding:8px 9px;display:grid}.reader-search-result:hover{background:#2f7d6d1a}.reader-search-result strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;line-height:1.25;overflow:hidden}.reader-search-result span{color:var(--muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:12px;line-height:1.35;display:-webkit-box;overflow:hidden}.reader-controls{flex:none;align-items:center;gap:6px;min-width:0;display:flex}.reader-controls__toggle{display:none}.reader-controls__panel{align-items:center;gap:6px;display:flex}.reader-bookmark-toggle{position:relative}.reader-bookmark-toggle>span{color:#fff;font-variant-numeric:tabular-nums;background:#2f7d6d;border-radius:999px;place-items:center;min-width:16px;height:16px;padding:0 4px;font-size:9px;font-weight:850;display:grid;position:absolute;top:2px;right:1px}.reader-bookmark-toggle--active,.reader-narration-toggle--active{color:#2f7d6d;background:#2f7d6d1f}.reader-narration{border-top:1px solid var(--line);min-width:0;min-height:54px;color:var(--ink);background:#fffdf8;grid-template-columns:minmax(150px,1fr) auto 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p{max-width:230px;margin:0;font-size:12px;line-height:1.55}.reader-bookmark-item{border:1px solid var(--line);background:#fff;border-radius:8px;display:grid;position:relative;overflow:hidden}.reader-bookmark-item__jump{min-width:0;color:var(--ink);text-align:left;cursor:pointer;background:0 0;gap:8px;padding:11px 42px 11px 11px;display:grid}.reader-bookmark-item__jump:hover{background:#2f7d6d0d}.reader-bookmark-item__meta{justify-content:space-between;align-items:baseline;gap:8px;min-width:0;display:flex}.reader-bookmark-item__meta strong{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:12px;overflow:hidden}.reader-bookmark-item__meta>span{color:var(--accent-ink);font-variant-numeric:tabular-nums;flex:none;font-size:10px;font-weight:800}.reader-bookmark-item 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mark{background:#f0d27a;border-radius:6px;width:fit-content;max-width:100%;padding:4px 6px;line-height:1.7}.landing-demo-reader__actions button,.landing-demo-reader__ai button{min-height:34px;font-weight:820}.landing-demo-reader__ai{color:#e8f2ee;background:#244a44;align-content:start;gap:14px;padding:18px;display:grid}.landing-demo-reader__ai span{color:#b7d4ca;font-size:12px;font-weight:860}.landing-demo-reader__ai p{color:#e8f2ee;margin:0;font-size:14px;line-height:1.75}.landing-demo-reader__ai button{color:#17302d;background:#d7eee5;border-radius:7px}.landing-flow-list,.landing-faq-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px;display:grid}.landing-flow-list article,.landing-faq-list article{background:#fffdf8;border:1px solid #21313d1a;border-radius:8px;align-content:start;gap:10px;padding:18px;display:grid}.landing-flow-list 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