:root{color:#181818;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f5f5f2;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html,body,#root{min-width:0;min-height:100%;margin:0}body{min-height:100dvh}button,textarea{font:inherit}button{cursor:pointer}button:focus-visible,textarea:focus-visible{outline-offset:2px;outline:3px solid #1d1d1d}:root{--canvas:#f5f5f2;--surface:#fff;--ink:#181818;--muted:#6b6b67;--quiet:#e6e6e1;--line:#d4d4ce;--selected:#e7e7e2}.auth-screen{background:var(--canvas);place-items:center;min-height:100dvh;padding:24px;display:grid}.auth-card{border:1px solid var(--line);background:var(--surface);width:min(100%,420px);padding:32px;box-shadow:0 18px 45px #18181814}.auth-eyebrow{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin:0;font-size:12px}.auth-card h1{margin:8px 0 0;font-size:30px}.auth-description{color:var(--muted);margin:12px 0 28px;line-height:1.6}.auth-field{gap:8px;display:grid}.auth-field label{font-weight:650}.auth-field input{width:100%;min-height:46px;color:var(--ink);font:inherit;background:#fbfbf8;border:1px solid #9c9c96;border-radius:2px;padding:10px 12px}.auth-field input:focus{outline:2px solid var(--ink);outline-offset:1px}.auth-checkbox{color:var(--muted);align-items:center;gap:9px;margin-top:16px;font-size:14px;display:flex}.auth-checkbox input{width:16px;height:16px;margin:0}.auth-error{color:#6a3434;background:#f6eeee;border-left:3px solid #6a3434;margin:16px 0 0;padding:9px 11px;line-height:1.5}.auth-submit{color:#fff;width:100%;min-height:46px;font:inherit;background:#171717;border:1px solid #111;border-radius:2px;margin-top:22px;padding:10px 18px;font-weight:650}.auth-submit:disabled{cursor:not-allowed;opacity:.45}.auth-state{min-height:100dvh;color:var(--muted);text-align:center;place-content:center;gap:14px;padding:24px;display:grid}.auth-state p{max-width:34ch;margin:0;line-height:1.6}.auth-state .text-button{justify-self:center}.auth-state-error{color:#6a3434}.app-shell{background:var(--canvas);grid-template-columns:minmax(250px,304px) minmax(0,1fr);height:100dvh;min-height:0;display:grid;overflow:hidden}.app-shell.sidebar-is-collapsed{grid-template-columns:minmax(0,1fr)}.app-shell.sync-panel-is-open{grid-template-columns:minmax(250px,304px) minmax(0,1fr) minmax(280px,340px)}.app-shell.sidebar-is-collapsed.sync-panel-is-open{grid-template-columns:minmax(0,1fr) minmax(280px,340px)}.desktop-sidebar{border-right:1px solid var(--line);background:var(--surface);flex-direction:column;height:100%;min-height:0;display:flex;overflow:hidden}.sidebar-is-collapsed .desktop-sidebar{display:none}.library-panel-header,.mobile-library-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;display:flex}.library-panel-header{flex:0 0 72px;height:72px;padding:12px 18px}.library-panel-header-actions{align-items:center;gap:10px;display:flex}.auth-logout-button{white-space:nowrap}.eyebrow,.reader-project-name,.reader-file-name{margin:0}.eyebrow{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;font-size:12px}.library-panel-header h1,.mobile-library-header h1{margin:4px 0 0;font-size:20px;font-weight:650}.icon-button,.mobile-library-header button{border:1px solid var(--line);color:var(--ink);background:var(--surface)}.icon-button{border-radius:4px;place-items:center;width:36px;height:36px;font-size:28px;line-height:1;display:grid}.library-tree{overscroll-behavior:contain;flex:auto;min-height:0;padding:12px 10px 24px;overflow-y:auto}.tree-node+.tree-node{margin-top:3px}.tree-row{width:100%;min-height:42px;color:var(--ink);text-align:left;background:0 0;border:0;align-items:center;gap:7px;display:flex}.tree-row:hover,.tree-row:focus-visible{background:var(--quiet)}.tree-folder-row{padding:8px 7px;font-weight:570}.tree-toggle{width:13px;color:var(--muted);flex:0 0 13px;place-items:center;font-size:16px;display:inline-grid}.tree-folder-mark,.tree-file-mark{color:var(--muted);font-size:14px}.tree-children{border-left:1px solid var(--line);margin-left:13px;padding-left:8px}.tree-empty{color:var(--muted);margin:8px 7px 12px;font-size:13px;line-height:1.5}.tree-file-row{min-height:38px;padding:7px 8px;font-size:14px}.tree-file-row.is-current{border-left:4px solid var(--ink);background:var(--selected);font-weight:700}.reading-workspace{min-width:0;height:100%;min-height:0;position:relative;overflow:hidden}.sync-drawer{border-left:1px solid var(--line);background:var(--surface);flex-direction:column;min-width:0;min-height:0;display:flex;position:relative;overflow:hidden}.sync-drawer-close{z-index:1;width:34px;height:34px;color:var(--ink);background:0 0;border:0;place-items:center;font-size:26px;line-height:1;display:grid;position:absolute;top:14px;right:14px}.sync-drawer-close:hover,.sync-drawer-close:focus-visible{background:var(--quiet)}.sync-drawer .sync-panel{border-top:0;height:100%;padding:24px 18px 28px;overflow-y:auto}.sync-drawer .sync-panel-header{padding-right:40px}.expand-library-button{z-index:2;width:40px;height:40px;color:var(--ink);background:0 0;border:0;border-radius:0;place-items:center;padding:0;font-size:24px;line-height:1;display:grid;position:absolute;top:18px;left:18px}.expand-library-button:hover,.expand-library-button:focus-visible{background:var(--quiet)}.sidebar-is-collapsed .reader-header{padding-left:72px}.reader-pane{background:var(--surface);flex-direction:column;height:100%;min-height:0;display:flex;position:relative}.reader-header{border-bottom:1px solid var(--line);flex:0 0 72px;justify-content:space-between;align-items:center;gap:20px;height:72px;padding:16px clamp(24px,4vw,64px);display:flex}.reader-project-name{color:var(--muted);font-size:14px}.reader-file-name{font-size:14px;font-weight:650}.reader-header-actions{align-items:center;gap:12px;min-width:0;display:flex}.reader-feedback-toggle{border:1px solid var(--line);min-height:36px;color:var(--ink);background:var(--surface);border-radius:2px;padding:6px 12px;font-size:13px;font-weight:650}.reader-feedback-toggle:hover,.reader-feedback-toggle:focus-visible{background:var(--quiet)}.reader-sync-toggle{width:36px;height:36px;color:var(--ink);background:0 0;border:0;flex:0 0 36px;place-items:center;font-size:22px;line-height:1;display:grid}.reader-sync-toggle:hover,.reader-sync-toggle:focus-visible,.reader-sync-toggle.is-active{background:var(--quiet)}.reader-scroll{overscroll-behavior:contain;flex:1;min-height:0;overflow:auto}.reader-status{min-height:100%;color:var(--muted);text-align:center;place-content:center;gap:16px;padding:32px;display:grid}.reader-status p{max-width:34ch;margin:0;line-height:1.6}.reader-status .text-button{justify-self:center}.library-state{color:var(--muted);margin:20px 18px;font-size:14px;line-height:1.6}.library-state-error{gap:12px;display:grid}.library-state-error p{margin:0}.sync-panel{border-top:1px solid var(--line);background:#fbfbf8;flex:none;padding:12px 14px 14px;font-family:Inter,ui-sans-serif,system-ui,sans-serif}.sync-panel-header{justify-content:space-between;align-items:flex-start;gap:10px;display:flex}.sync-panel-eyebrow{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin:0;font-size:10px}.sync-panel h2{margin:2px 0 0;font-size:15px}.sync-panel-header .text-button{font-size:12px}.sync-panel-header .text-button:disabled{cursor:wait;opacity:.5}.sync-state{align-items:center;gap:7px;margin-top:10px;font-size:13px;font-weight:650;display:flex}.sync-state-dot{background:#777772;border-radius:50%;flex:0 0 8px;width:8px;height:8px}.sync-state-clean .sync-state-dot{background:#3e5b47}.sync-state-pending .sync-state-dot,.sync-state-remote-ahead .sync-state-dot{background:#8a6a29}.sync-state-conflict .sync-state-dot,.sync-state-offline .sync-state-dot{background:#7a3b3b}.sync-panel-meta,.sync-panel-message,.sync-panel-warning,.sync-panel-notice{color:var(--muted);overflow-wrap:anywhere;margin:7px 0 0;font-size:12px;line-height:1.45}.sync-panel-warning,.sync-panel-notice-error{color:#6a3434}.sync-file-list{color:var(--muted);margin-top:9px;font-size:12px}.sync-file-list p{margin:0 0 3px}.sync-file-list ul{max-height:68px;margin:0;padding-left:17px;overflow-y:auto}.sync-file-list li{overflow-wrap:anywhere;margin-top:2px}.sync-file-list>span{margin-top:3px;display:block}.sync-commit-label{color:var(--muted);margin-top:10px;font-size:12px;display:block}.sync-commit-input{border:1px solid var(--line);width:100%;min-height:34px;color:var(--ink);background:var(--surface);font:inherit;border-radius:2px;margin-top:4px;padding:6px 8px;font-size:12px;display:block}.sync-commit-input:disabled{cursor:not-allowed;opacity:.55}.sync-button{width:100%;min-height:38px;margin-top:8px;padding:7px 10px;font-size:13px}.markdown-article,.feedback-panel{width:min(100%,820px);margin:0 auto}.markdown-article{color:#22221f;padding:clamp(42px,7vw,80px) clamp(24px,7vw,88px) 12px;font-family:Noto Serif SC,Source Han Serif SC,Songti SC,SimSun,serif;font-size:clamp(18px,1.45vw,22px);line-height:1.9}.markdown-article>:first-child{margin-top:0}.markdown-article p,.markdown-article blockquote,.markdown-article ul,.markdown-article ol,.markdown-article pre,.markdown-article hr{margin:0 0 1.35em}.markdown-article h1,.markdown-article h2,.markdown-article h3,.markdown-article h4,.markdown-article h5,.markdown-article h6{color:#151513;font-family:Inter,ui-sans-serif,system-ui,sans-serif;line-height:1.3}.markdown-article h1{margin:0 0 1.15em;font-size:clamp(30px,3vw,42px)}.markdown-article h2{margin:2.1em 0 .8em;font-size:clamp(23px,2.1vw,30px)}.markdown-article h3{margin:1.8em 0 .7em;font-size:clamp(19px,1.7vw,24px)}.markdown-article h4,.markdown-article h5,.markdown-article h6{margin:1.6em 0 .65em;font-size:1em}.markdown-article a,.markdown-link{color:inherit;font:inherit;text-underline-offset:.16em;font-weight:650;text-decoration:underline;text-decoration-thickness:1px}.markdown-link{text-align:inherit;background:0 0;border:0;padding:0}.markdown-article code{background:#efefea;border-radius:2px;padding:.1em .3em;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.82em}.markdown-article pre{border:1px solid var(--line);background:#f7f7f3;padding:16px;font-size:.82em;line-height:1.65;overflow-x:auto}.markdown-article pre code{font-size:inherit;background:0 0;padding:0}.markdown-article blockquote{color:#4d4d49;border-left:4px solid #777772;padding-left:18px}.markdown-article blockquote>:last-child{margin-bottom:0}.markdown-article ul,.markdown-article ol{padding-left:1.35em}.markdown-article li+li{margin-top:.5em}.markdown-article hr{background:var(--line);border:0;height:1px}.markdown-article img{max-width:100%;height:auto;margin:0 0 1.35em;display:block}.feedback-panel{padding:36px clamp(24px,7vw,88px) 80px;font-family:Inter,ui-sans-serif,system-ui,sans-serif}.feedback-dialog-layer{z-index:7;pointer-events:none;height:clamp(160px,25dvh,520px);position:absolute;bottom:0;left:0;right:0}.feedback-dialog{border:1px solid var(--line);background:var(--surface);width:100%;max-height:none;box-shadow:none;pointer-events:auto;border-bottom:0;margin:0;padding:0;position:absolute;inset:0;overflow:hidden}.feedback-dialog-close{z-index:1;width:40px;height:40px;color:var(--ink);background:0 0;border:0;border-radius:2px;flex:0 0 40px;place-items:center;font-size:27px;line-height:1;display:grid;position:absolute;top:8px;left:8px}.feedback-dialog-close:hover,.feedback-dialog-close:focus-visible{background:var(--quiet)}.feedback-divider{background:var(--line);height:1px;margin-bottom:28px}.feedback-panel h2{margin:0;font-size:22px}.feedback-help{color:var(--muted);margin:9px 0 16px;font-size:15px;line-height:1.6}.feedback-save-note{color:var(--muted);margin:12px 0 0;font-size:14px;line-height:1.6}.feedback-panel textarea{resize:vertical;width:100%;min-height:148px;color:var(--ink);background:#fbfbf8;border:1px solid #9c9c96;border-radius:2px;padding:14px;line-height:1.6;display:block}.feedback-panel textarea::placeholder{color:#777772}.feedback-dialog.feedback-panel textarea{resize:none;background:var(--surface);border:0;border-radius:0;width:100%;height:100%;min-height:0;padding:52px 16px 16px;font-size:clamp(16px,1.3vw,20px);line-height:1.6;overflow:auto}.feedback-dialog.feedback-panel textarea:focus-visible{outline:2px solid var(--ink);outline-offset:-2px}.primary-button{color:#fff;background:#171717;border:1px solid #111;border-radius:2px;min-height:46px;margin-top:14px;padding:10px 18px;font-weight:650}.feedback-actions{flex-wrap:wrap;gap:10px;margin-top:14px;display:flex}.feedback-actions .primary-button,.feedback-actions .secondary-button{margin-top:0}.secondary-button{border:1px solid var(--line);min-height:46px;color:var(--ink);background:var(--surface);border-radius:2px;padding:10px 18px;font-weight:650}.secondary-button:disabled,.primary-button:disabled{cursor:not-allowed;opacity:.45}.feedback-status{border-left:4px solid var(--ink);background:var(--quiet);justify-content:space-between;align-items:center;gap:16px;margin-top:16px;padding:12px 14px;display:flex}.feedback-status p{margin:0;line-height:1.5}.feedback-recovery{flex-direction:column;align-items:flex-start}.feedback-error{border-left-color:#6a3434}.text-button{color:var(--ink);background:0 0;border:0;border-bottom:1px solid;flex:none;padding:3px 0;font-size:14px;font-weight:650}.mobile-library-drawer,.mobile-library-dismiss-area,.mobile-reader-menu,.mobile-sync-dismiss-area{display:none}@media (width<=900px){.app-shell,.app-shell.sidebar-is-collapsed{--mobile-library-drawer-width:clamp(240px, 68vw, 620px);height:100dvh;min-height:0;display:block;overflow:hidden}.desktop-sidebar,.expand-library-button,.sync-drawer{display:none}.mobile-sync-is-open .sync-drawer{z-index:6;width:var(--mobile-library-drawer-width);border-left:1px solid #1b1b1a;display:flex;position:fixed;inset:0 0 0 auto}.mobile-sync-is-open .mobile-sync-dismiss-area{z-index:5;inset:0 var(--mobile-library-drawer-width) 0 0;background:0 0;border:0;padding:0;display:block;position:fixed}.mobile-sync-is-open .sync-drawer .sync-panel{padding:22px 18px 28px}.reading-workspace{height:100dvh}.reader-pane{height:100dvh;position:relative}.reader-header{display:none}.reader-scroll{padding-bottom:18px}.markdown-article{padding:32px 27px 8px;font-size:20px;line-height:1.85}.markdown-article h1{font-size:30px}.markdown-article h2{font-size:24px}.markdown-article h3{font-size:21px}.feedback-panel{padding:34px 27px 110px}.feedback-dialog{padding:0}.feedback-panel textarea{min-height:170px;font-size:18px}.primary-button{width:100%;min-height:54px;font-size:17px}.feedback-actions{display:grid}.secondary-button{width:100%;min-height:54px;font-size:17px}.mobile-reader-menu{z-index:4;background:#fff;border:1px solid #1b1b1a;gap:10px;padding:10px;display:flex;position:fixed;bottom:18px;left:18px;right:18px}.mobile-reader-menu button{color:#171717;background:#fff;border:1px solid #1b1b1a;border-radius:2px;flex:1;min-height:52px;font-size:17px;font-weight:650}.mobile-reader-menu button+button{color:#171717;background:#fff}.mobile-reader-menu button:last-child{color:#fff;background:#171717}.mobile-library-dismiss-area{display:none}.mobile-library-is-open .mobile-library-dismiss-area{z-index:5;inset:0 0 0 var(--mobile-library-drawer-width);background:0 0;border:0;padding:0;display:block;position:fixed}.mobile-library-drawer{z-index:6;width:var(--mobile-library-drawer-width);background:var(--surface);border-right:1px solid #1b1b1a;flex-direction:column;display:none;position:fixed;inset:0 auto 0 0;overflow:hidden}.mobile-library-is-open .mobile-library-drawer{display:flex}.mobile-library-header{z-index:1;background:var(--surface);flex:none;min-height:66px;padding:12px 18px;position:sticky;top:0}.mobile-library-header h1{margin:0;font-size:18px}.mobile-library-header button{border:0;min-height:40px;padding:0;font-size:15px;font-weight:650}.mobile-library-drawer .library-tree{flex:auto;min-height:0;padding:16px 18px 36px;overflow-y:auto}.mobile-library-drawer .tree-row{min-height:52px;font-size:18px}.mobile-library-drawer .tree-file-row{min-height:48px;font-size:16px}}