:root{--bg:#f2f2f5;--panel:#fff;--panel2:#f8f8fa;--text:#1c1c24;--muted:#6d6d7a;--border:#e2e2ea;--accent:#6d28d9;--accent-weak:#f0eafd;--sheet:#fff;--editor-bg:#fcfcfe;--code-bg:#f1eff7;--shadow:0 1px 3px #18143014, 0 10px 30px #18143012;--sans:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono:ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace}html[data-theme=dark]{--bg:#101016;--panel:#17171f;--panel2:#1c1c26;--text:#e9e9f1;--muted:#9a9aac;--border:#2b2b38;--accent:#a78bfa;--accent-weak:#2a2342;--sheet:#1b1b25;--editor-bg:#14141c;--code-bg:#262633;--shadow:0 1px 3px #00000080, 0 12px 32px #00000073}.skip-link{z-index:100;background:var(--accent);color:#fff;border-radius:0 0 8px;padding:10px 18px;font-weight:700;position:absolute;top:0;left:-9999px}.skip-link:focus{left:0}*{box-sizing:border-box}html,body{height:100%}body{font:14px/1.5 var(--sans);background:var(--bg);color:var(--text);flex-direction:column;height:100dvh;margin:0;display:flex;overflow:hidden}.topbar{background:var(--panel);border-bottom:1px solid var(--border);flex:none;align-items:center;gap:10px;height:52px;padding:0 14px;display:flex}.brand{white-space:nowrap;align-items:center;gap:8px;font-size:15px;font-weight:700;display:flex}.brand .logo{font-size:19px}.doc-title{min-width:60px;max-width:430px;font:inherit;color:var(--text);background:0 0;border:1px solid #0000;border-radius:8px;flex:auto;padding:6px 10px;font-weight:600}.doc-title::placeholder{color:var(--muted);font-weight:500}.doc-title:hover{border-color:var(--border)}.doc-title:focus{border-color:var(--accent);background:var(--panel2);outline:none}.topbar-actions{align-items:center;gap:8px;margin-left:auto;display:flex}.privacy-badge{color:var(--muted);border:1px solid var(--border);white-space:nowrap;cursor:help;border-radius:999px;padding:4px 10px;font-size:12px}.btn{appearance:none;font:inherit;color:var(--text);background:var(--panel);border:1px solid var(--border);cursor:pointer;white-space:nowrap;border-radius:8px;padding:7px 12px}.btn:hover{border-color:var(--accent);color:var(--accent)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.btn.primary:hover{filter:brightness(1.1);color:#fff}.btn.primary[disabled]{opacity:.6;cursor:progress}.btn .caret{font-size:11px}.icon-btn{padding:7px 10px;font-size:15px;line-height:1}.split{flex:1;min-height:0;display:flex}.pane{flex-direction:column;min-width:0;min-height:0;display:flex}.editor-pane{flex:0 0 var(--split,50%);background:var(--editor-bg)}.preview-pane{background:var(--bg);flex:auto}.pane-head{letter-spacing:.14em;text-transform:uppercase;color:var(--muted);background:var(--panel2);border-bottom:1px solid var(--border);user-select:none;flex:none;align-items:baseline;gap:10px;padding:5px 16px;font-size:10.5px;font-weight:700;display:flex}.pane-hint{letter-spacing:.02em;text-transform:none;opacity:.8;font-weight:400}#editor{resize:none;width:100%;color:var(--text);font:13.5px/1.7 var(--mono);tab-size:2;caret-color:var(--accent);background:0 0;border:0;outline:none;flex:1;padding:20px 24px 40vh}#editor::placeholder{color:var(--muted);opacity:.7}.divider{cursor:col-resize;background:var(--border);flex:none;width:5px;transition:background .15s}.divider:hover,.divider.active,.divider:focus-visible{background:var(--accent);outline:none}#preview{scrollbar-gutter:stable;flex:1;padding:26px 28px 48px;overflow:auto}.sheet{background:var(--sheet);border:1px solid var(--border);max-width:820px;min-height:calc(100% - 2px);box-shadow:var(--shadow);border-radius:10px;margin:0 auto;padding:52px 58px 64px}.md-body{font-family:var(--sans);word-wrap:break-word;font-size:15px;line-height:1.7}.md-body>:first-child{margin-top:0}.md-body>:last-child{margin-bottom:0}.md-body h1,.md-body h2,.md-body h3,.md-body h4,.md-body h5,.md-body h6{margin:1.4em 0 .5em;font-weight:700;line-height:1.3}.md-body h1{border-bottom:1px solid var(--border);padding-bottom:.3em;font-size:2em}.md-body h2{border-bottom:1px solid var(--border);padding-bottom:.25em;font-size:1.5em}.md-body h3{font-size:1.25em}.md-body h4{font-size:1.05em}.md-body h5{font-size:.95em}.md-body h6{color:var(--muted);font-size:.88em}.md-body p{margin:.7em 0}.md-body a{color:var(--accent);text-underline-offset:2px;text-decoration-thickness:1px}.md-body code{font-family:var(--mono);background:var(--code-bg);border-radius:5px;padding:.15em .42em;font-size:.88em}.md-body pre{background:var(--code-bg);border-radius:9px;margin:.9em 0;padding:14px 17px;line-height:1.55;overflow-x:auto}.md-body pre code{background:0 0;padding:0;font-size:.85em}.md-body blockquote{border-left:3px solid var(--accent);color:var(--muted);margin:.9em 0;padding:.15em 1.1em}.md-body ul,.md-body ol{margin:.7em 0;padding-left:1.7em}.md-body li{margin:.28em 0}.md-body li>p{margin:.3em 0}.md-body li:has(>input[type=checkbox]){margin-left:-1.45em;list-style:none}.md-body input[type=checkbox]{accent-color:var(--accent);vertical-align:-1px;margin-right:.5em}.md-body table{border-collapse:collapse;width:max-content;max-width:100%;margin:.9em 0;display:block;overflow-x:auto}.md-body th,.md-body td{border:1px solid var(--border);padding:7px 13px}.md-body th{background:var(--code-bg);font-weight:600}.md-body img{border-radius:6px;max-width:100%}.md-body hr{border:0;border-top:2px solid var(--border);margin:1.8em 0}.toolbar{background:var(--panel);border-top:1px solid var(--border);scrollbar-width:thin;flex:none;align-items:center;gap:3px;padding:6px 10px;display:flex;overflow-x:auto}.tbtn{appearance:none;min-width:32px;height:32px;color:var(--text);font-family:var(--sans);cursor:pointer;white-space:nowrap;background:0 0;border:1px solid #0000;border-radius:7px;flex:none;padding:0 9px;font-size:12.5px}.tbtn:hover{background:var(--accent-weak);color:var(--accent);border-color:var(--border)}.t-bold{font-weight:800}.t-italic{font-family:Georgia,serif;font-style:italic}.t-strike{text-decoration:line-through}.t-mono{font-family:var(--mono);font-size:11.5px}.tsep{background:var(--border);flex:none;width:1px;height:20px;margin:0 6px}.counts{color:var(--muted);white-space:nowrap;user-select:none;margin-left:auto;padding:0 8px;font-size:12px}.download-wrap{position:relative}.menu{background:var(--panel);border:1px solid var(--border);min-width:285px;max-height:min(72vh,640px);box-shadow:var(--shadow);z-index:60;border-radius:11px;padding:6px;position:absolute;top:calc(100% + 7px);right:0;overflow-y:auto}.mitem{text-align:left;width:100%;color:var(--text);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:8px;padding:8px 11px;display:block}.mitem:hover,.mitem:focus-visible{background:var(--accent-weak);outline:none}.mitem[disabled]{opacity:.55;cursor:progress}.mitem .fmt{font-size:13px;font-weight:600;display:block}.mitem .fmt em{color:var(--muted);font-style:normal;font-weight:500}.mitem .hint{color:var(--muted);margin-top:1px;font-size:11.5px;display:block}.msep{background:var(--border);height:1px;margin:6px}.toast{background:var(--text);color:var(--bg);box-shadow:var(--shadow);opacity:0;z-index:100;pointer-events:none;border-radius:9px;max-width:80vw;padding:9px 17px;font-size:13px;font-weight:500;transition:opacity .18s,transform .18s;position:fixed;bottom:62px;left:50%;transform:translate(-50%)translateY(10px)}.toast.show{opacity:1;transform:translate(-50%)translateY(0)}body.dragging{cursor:col-resize;user-select:none}body.dragging #editor,body.dragging #preview{pointer-events:none}body.dropping .editor-pane{outline:2px dashed var(--accent);outline-offset:-6px}@media print{.topbar,.toolbar,.editor-pane,.divider,.pane-head,.toast{display:none!important}body{background:#fff;height:auto;overflow:visible}.split{display:block}.preview-pane{background:#fff}#preview{padding:0;overflow:visible}.sheet{box-shadow:none;background:#fff;border:0;border-radius:0;max-width:none;padding:0}}@media (width<=860px){.split{flex-direction:column}.editor-pane{flex:50%}.preview-pane{border-top:1px solid var(--border);flex:50%}.divider,.privacy-badge,.brand-name,#btnNew{display:none}.doc-title{max-width:170px}.sheet{padding:26px 22px 40px}#editor{padding:14px 16px 30vh}}.notfound{text-align:center;max-width:40rem;color:var(--text);font-family:var(--sans);margin:12vh auto 0;padding:0 24px}.notfound h1{margin:0 0 .5rem;font-size:1.6rem}.notfound p{color:var(--muted);margin:0 0 1.25rem;line-height:1.6}.notfound a.btn{padding:8px 16px;text-decoration:none;display:inline-block}.page{flex:auto;padding:28px 20px 56px;overflow-y:auto}.page .sheet{min-height:0}.page .md-body>h1{margin-top:0}a.btn{text-decoration:none;display:inline-block}.page .updated{color:var(--muted);margin:-.2em 0 1.8em;font-size:13px}.pagefoot{max-width:820px;color:var(--muted);font-size:13px;font-family:var(--sans);flex-wrap:wrap;gap:6px 14px;margin:16px auto 0;padding:0 2px;display:flex}.pagefoot a{color:var(--muted);text-decoration:none}.pagefoot a:hover{color:var(--accent);text-decoration:underline}.tlinks{white-space:nowrap;font-size:12px;font-family:var(--sans);flex:none;align-items:center;gap:12px;padding:0 4px 0 14px;display:flex}.tlinks a{color:var(--muted);text-decoration:none}.tlinks a:hover{color:var(--accent);text-decoration:underline}@media (width<=860px){.page{padding:18px 12px 44px}}