@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-cyrillic-ext-wght-normal-DjL33-gN.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-cyrillic-wght-normal-BEAKL7Jp.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-vietnamese-wght-normal-6IgcOCM7.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-latin-ext-wght-normal-DC-KSUi6.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-latin-wght-normal-BgDaEnEv.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-cyrillic-ext-wght-normal-X_5orZeX.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-cyrillic-wght-normal-DiZS0aHC.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-symbols2-wght-normal-CO5SzqOn.woff2)format("woff2-variations");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-vietnamese-wght-normal-DadHysG0.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-latin-ext-wght-normal-Bwz-egvJ.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-latin-wght-normal-XN7g48iV.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-vietnamese-opsz-normal-BjhtXyW2.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-latin-ext-opsz-normal-BQn1nviT.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-latin-opsz-normal-s-izfB6B.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light only;--canvas:#f3f1ec;--surface:#fff;--surface-soft:#faf9f6;--ink:#1c2230;--ink-2:#485062;--ink-3:#808796;--line:#e4e0d7;--line-soft:#efece6;--navy:#1f2a44;--accent:#3451b2;--accent-soft:#eef1fb;--sans:"Geist Variable", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--mono:"Geist Mono Variable", ui-monospace, "SF Mono", Menlo, Consolas, monospace;--serif:"Newsreader Variable", "Iowan Old Style", Georgia, serif;--radius:10px;--shadow-paper:0 1px 2px #1c22300a, 0 8px 28px -12px #1c22301f;--ease:cubic-bezier(.2, .7, .2, 1)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--canvas);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-size:14px}body.resizing{cursor:col-resize;-webkit-user-select:none;user-select:none}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.app{grid-template-rows:56px 1fr 30px;height:100dvh;display:grid}.topbar{background:var(--surface);border-bottom:1px solid var(--line);grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;padding:0 16px;display:grid}.brand{align-items:center;gap:10px;min-width:0;display:flex}.brand-mark{background:var(--navy);color:#f6f4ee;border-radius:8px;flex:none;place-items:center;width:28px;height:28px;display:grid}.doc-name{letter-spacing:-.01em;white-space:nowrap;text-overflow:ellipsis;font-weight:550;overflow:hidden}.segmented{background:var(--canvas);border:1px solid var(--line);border-radius:9px;gap:2px;padding:3px;display:inline-flex}.segmented button{color:var(--ink-2);cursor:pointer;transition:background .18s var(--ease), color .18s var(--ease), box-shadow .18s var(--ease);background:0 0;border:0;border-radius:6px;padding:5px 14px;font-weight:500}.segmented button:hover{color:var(--ink)}.segmented button.active{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px #1c223014,0 0 0 1px #1c22300a}.actions{justify-content:flex-end;align-items:center;gap:6px;display:flex}.divider-v{background:var(--line);width:1px;height:20px;margin:0 6px}.btn,.icon-btn{border:1px solid var(--line);background:var(--surface);cursor:pointer;white-space:nowrap;height:32px;transition:background .15s var(--ease), border-color .15s var(--ease), transform .15s var(--ease);border-radius:8px;justify-content:center;align-items:center;gap:7px;font-weight:500;display:inline-flex}.btn{padding:0 12px}.icon-btn{width:32px;color:var(--ink-2);background:0 0;border-color:#0000}.btn:hover,.icon-btn:hover{background:var(--surface-soft);color:var(--ink);border-color:#d6d2c8}.btn:active,.icon-btn:active{transform:translateY(1px)}.btn-primary{background:var(--navy);border-color:var(--navy);color:#f6f4ee}.btn-primary:hover{color:#fff;background:#2a3757;border-color:#2a3757}.btn-ghost{color:var(--ink-2);background:0 0;border-color:#0000}.btn:disabled,.icon-btn:disabled{opacity:.4;pointer-events:none}.btn kbd{font-family:var(--mono);border:1px solid var(--line);color:var(--ink-3);border-radius:4px;padding:1px 5px;font-size:11px}.workspace{min-height:0;display:flex;overflow:hidden}.workspace>.pane{flex:1}.split-pane{flex-grow:0;flex-shrink:0;min-width:0;display:flex}.split-pane>.pane{flex:1}.splitter{background:var(--line);cursor:col-resize;touch-action:none;flex:none;width:1px;position:relative}.splitter:before{content:"";position:absolute;inset:0 -5px}.splitter:after{content:"";opacity:0;width:5px;height:36px;transition:opacity .2s var(--ease);background:#d3cec3;border-radius:3px;margin-top:-18px;position:absolute;top:50%;left:-2px}.splitter:hover:after,body.resizing .splitter:after{opacity:1}.pane{min-width:0;min-height:0;position:relative}.pane-label{letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);pointer-events:none;z-index:1;font-size:11px;font-weight:500;position:absolute;top:12px;right:18px}.pane-editor{background:var(--surface);display:flex}.editor{resize:none;width:100%;height:100%;color:var(--ink);font-family:var(--mono);tab-size:2;caret-color:var(--accent);background:0 0;border:0;outline:none;flex:1;padding:36px 40px 80px;font-size:13.5px;line-height:1.75}.mode-write .editor{max-width:860px;margin:0 auto}.editor::placeholder{color:var(--ink-3)}.editor::selection{background:#dbe3fb}.pane-preview{scroll-behavior:auto;padding:32px 28px 96px;overflow-y:auto}.mode-read .pane-preview{padding:48px 24px 120px}.paper{background:var(--surface);border:1px solid var(--line-soft);max-width:860px;box-shadow:var(--shadow-paper);border-radius:14px;margin:0 auto;padding:56px 64px 72px}.split-pane .paper{padding:44px 48px 60px}.empty{text-align:center;max-width:440px;margin:12vh auto 0}.empty-icon{background:var(--surface);border:1px solid var(--line);width:56px;height:56px;color:var(--ink-2);box-shadow:var(--shadow-paper);border-radius:14px;place-items:center;margin:0 auto 20px;display:grid}.empty h2{font-family:var(--serif);letter-spacing:-.01em;margin:0 0 8px;font-size:26px;font-weight:550}.empty p{color:var(--ink-2);margin:0 0 24px;font-size:15px;line-height:1.6}.empty-actions{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.statusbar{border-top:1px solid var(--line);background:var(--surface);color:var(--ink-3);font-variant-numeric:tabular-nums;align-items:center;gap:18px;padding:0 16px;font-size:12px;display:flex}.status-right{margin-left:auto}.drop-overlay{z-index:50;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);pointer-events:none;animation:fade .15s var(--ease);background:#f3f1ecd1;place-items:center;display:grid;position:fixed;inset:0}.drop-card{background:var(--surface);color:var(--ink-2);border:1.5px dashed #b9b3a6;border-radius:18px;justify-items:center;gap:6px;padding:40px 64px;display:grid}.drop-card p{font-family:var(--serif);color:var(--ink);margin:8px 0 0;font-size:24px}.drop-card span{color:var(--ink-3);font-size:12px}.toast{z-index:60;background:var(--navy);color:#f6f4ee;opacity:0;transition:opacity .2s var(--ease), transform .2s var(--ease);pointer-events:none;border-radius:999px;padding:9px 16px;font-size:13px;font-weight:500;position:fixed;bottom:48px;left:50%;transform:translate(-50%,8px);box-shadow:0 10px 30px -10px #1c223066}.toast.show{opacity:1;transform:translate(-50%)}@keyframes fade{0%{opacity:0}}.reader{background:var(--canvas);animation:fade .25s var(--ease);position:fixed;inset:0;overflow-y:auto}.reader-progress{z-index:11;background:var(--accent);transform-origin:0;height:2px;position:fixed;top:0;left:0;right:0}.reader-bar{z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#f3f1ecdb;justify-content:space-between;align-items:center;gap:16px;padding:12px 20px;display:flex;position:sticky;top:0}.reader-name{color:var(--ink-3);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;overflow:hidden}.reader-layout{justify-content:center;gap:48px;padding:24px 24px 120px;display:flex}.paper-reader{flex:0 880px;margin:0;padding:72px 88px 88px}.toc{flex:none;align-self:flex-start;width:220px;max-height:calc(100dvh - 120px);padding-top:48px;position:sticky;top:80px;overflow-y:auto}.toc-title{letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin:0 0 12px;font-size:11px;font-weight:500}.toc ul{border-left:1px solid var(--line);margin:0;padding:0;list-style:none}.toc a{color:var(--ink-2);transition:color .15s var(--ease), border-color .15s var(--ease);border-left:1px solid #0000;margin-left:-1px;padding:5px 0 5px 14px;font-size:13px;line-height:1.4;text-decoration:none;display:block}.toc a:hover{color:var(--ink)}.toc a.active{color:var(--accent);border-left-color:var(--accent)}@media (width<=1180px){.toc{display:none}}@media (width<=900px){.btn-text,.doc-name{display:none}.btn{padding:0 9px}.divider-v{display:none}.paper,.split-pane .paper,.paper-reader{padding:36px 28px 48px}}@media (width<=720px){.topbar{grid-template-rows:auto auto;grid-template-columns:auto 1fr;row-gap:8px;padding:8px 16px}.app{grid-template-rows:auto 1fr 30px}.segmented{grid-area:2/1/auto/-1;justify-self:stretch}.segmented button{flex:1}.workspace.mode-split{flex-direction:column}.workspace.mode-split .split-pane{min-height:0;flex-basis:50%!important}.workspace.mode-split .splitter{pointer-events:none;width:auto;height:1px}.pane-preview,.mode-read .pane-preview{padding:16px 16px 64px}.editor{padding:24px 16px 60px}.paper,.split-pane .paper,.paper-reader{border-radius:12px;padding:28px 20px 40px}.reader-layout{padding:8px 12px 80px}.status-right{display:none}}.md{color:var(--ink);font-family:var(--sans);word-wrap:break-word;font-size:16px;line-height:1.72}.md>:first-child{margin-top:0!important}.md>:last-child{margin-bottom:0!important}.md p,.md ul,.md ol,.md blockquote,.md .table-wrap,.md .code-block,.md details,.md .md-alert,.md dl{margin:0 0 1.15em}.md h1,.md h2,.md h3,.md h4,.md h5,.md h6{color:var(--ink);margin:2em 0 .6em;scroll-margin-top:84px;line-height:1.22;position:relative}.md h1,.md h2,.md h3{font-family:var(--serif);font-optical-sizing:auto;letter-spacing:-.015em;font-weight:560}.md h1{border-bottom:1px solid var(--line-soft);margin-top:.4em;padding-bottom:.35em;font-size:2.5em}.md h2{border-bottom:1px solid var(--line-soft);padding-bottom:.3em;font-size:1.75em}.md h3{font-size:1.35em}.md h4{font-size:1.05em;font-weight:600}.md h5,.md h6{letter-spacing:.04em;text-transform:uppercase;color:var(--ink-2);font-size:.875em;font-weight:600}.md .anchor{color:var(--ink-3);font-family:var(--sans);opacity:0;transition:opacity .15s var(--ease);margin-left:.35em;font-size:.7em;font-weight:400;text-decoration:none}.md .anchor:before{content:"#"}.md :is(h1,h2,h3,h4):hover .anchor{opacity:1}.md .anchor:hover{color:var(--accent)}.md a{color:var(--accent);text-underline-offset:3px;transition:text-decoration-color .15s var(--ease);-webkit-text-decoration:underline #3451b247;text-decoration:underline #3451b247;text-decoration-thickness:1px}.md a:hover{text-decoration-color:currentColor}.md strong{font-weight:620}.md del{color:var(--ink-3)}.md mark{background:#fdf1c7;border-radius:3px;padding:0 .15em}.md :not(pre)>code{border:1px solid var(--line-soft);font-family:var(--mono);color:#2b3245;white-space:break-spaces;background:#f3f1ec;border-radius:5px;padding:.14em .4em;font-size:.84em}.md kbd{background:var(--surface);min-width:1.6em;font-family:var(--mono);text-align:center;color:var(--ink-2);vertical-align:.08em;border:1px solid #d9d5cc;border-bottom-width:2px;border-radius:5px;padding:.1em .45em;font-size:.78em;line-height:1.5;display:inline-block}.md sup,.md sub{line-height:0}.md ul,.md ol{padding-left:1.6em}.md li+li{margin-top:.3em}.md li>ul,.md li>ol{margin:.3em 0 0}.md li>p{margin:.4em 0}.md ul li::marker{color:#a7a093}.md ol li::marker{color:var(--ink-3);font-variant-numeric:tabular-nums}.md .contains-task-list{padding-left:.2em;list-style:none}.md .task-list-item input[type=checkbox]{vertical-align:-.15em;width:15px;height:15px;accent-color:var(--accent);margin:0 .6em 0 0}.md blockquote{color:var(--ink-2);font-family:var(--serif);border-left:3px solid #dcd7cc;padding:.2em 0 .2em 1.2em;font-size:1.12em;font-style:italic;line-height:1.6}.md blockquote>:last-child{margin-bottom:0}.md .md-alert{--alert:#3451b2;--alert-bg:#f2f5fd;border-left:3px solid var(--alert);background:var(--alert-bg);color:var(--ink);border-radius:0 10px 10px 0;padding:14px 18px;font-size:.95em}.md .md-alert>:last-child{margin-bottom:0}.md .md-alert-title{color:var(--alert);letter-spacing:.06em;text-transform:uppercase;align-items:center;gap:8px;margin:0 0 .3em;font-size:.82em;font-weight:600;display:flex}.md .md-alert-title:before{content:"";background:currentColor;border-radius:50%;width:7px;height:7px}.md .md-alert-tip{--alert:#2f7d5b;--alert-bg:#f0f8f3}.md .md-alert-important{--alert:#7046b8;--alert-bg:#f6f2fc}.md .md-alert-warning{--alert:#a86a12;--alert-bg:#fdf7ea}.md .md-alert-caution{--alert:#b8433a;--alert-bg:#fcf1ef}.md .table-wrap{border:1px solid var(--line);border-radius:10px;overflow-x:auto}.md table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:.92em;line-height:1.55}.md th,.md td{border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top;padding:10px 16px}.md th{background:var(--surface-soft);color:var(--ink-2);white-space:nowrap;font-size:.9em;font-weight:600}.md tr:last-child td{border-bottom:0}.md tbody tr:hover{background:#fbfaf7}.md .code-block{position:relative}.md pre{border:1px solid var(--line-soft);font-family:var(--mono);background:#f8f7f4;border-radius:10px;margin:0;padding:18px 20px;font-size:13.5px;line-height:1.65;overflow-x:auto}.md pre code{background:0 0;padding:0;font-family:inherit}.md .code-meta{align-items:center;gap:8px;display:flex;position:absolute;top:8px;right:8px}.md .code-lang{font-family:var(--mono);color:var(--ink-3);transition:opacity .15s var(--ease);font-size:11px}.md .code-copy{border:1px solid var(--line);background:var(--surface);height:24px;color:var(--ink-2);cursor:pointer;opacity:0;transition:opacity .15s var(--ease);border-radius:6px;padding:0 9px;font-size:11.5px;font-weight:500}.md .code-block:hover .code-copy,.md .code-copy:focus-visible{opacity:1}.md .code-block:hover .code-lang{opacity:0}.md .hljs-comment,.md .hljs-quote{color:#8c8a83;font-style:italic}.md .hljs-keyword,.md .hljs-selector-tag,.md .hljs-built_in,.md .hljs-meta .hljs-keyword{color:#8a3fa0}.md .hljs-string,.md .hljs-regexp,.md .hljs-addition,.md .hljs-template-tag{color:#2f7d5b}.md .hljs-number,.md .hljs-literal,.md .hljs-symbol,.md .hljs-bullet{color:#b05a1c}.md .hljs-title,.md .hljs-title.function_,.md .hljs-section{color:#2f55b5}.md .hljs-attr,.md .hljs-attribute,.md .hljs-property,.md .hljs-variable,.md .hljs-template-variable{color:#a3412f}.md .hljs-type,.md .hljs-title.class_,.md .hljs-class .hljs-title{color:#9a6b00}.md .hljs-meta,.md .hljs-subst,.md .hljs-params{color:#4a5263}.md .hljs-deletion{color:#b8433a}.md .hljs-emphasis{font-style:italic}.md .hljs-strong{font-weight:600}.md img{vertical-align:middle;border-radius:6px;max-width:100%;height:auto}.md p>img:only-child{margin:.5em auto;display:block}.md hr{background:var(--line);border:0;height:1px;margin:2.5em 0}.md [align=center]{text-align:center}.md [align=right]{text-align:right}.md details{border:1px solid var(--line);background:var(--surface-soft);border-radius:10px;padding:12px 18px}.md details>summary{cursor:pointer;margin-left:1em;font-weight:550;list-style-position:outside}.md details[open]>summary{margin-bottom:.8em}.md details>:last-child{margin-bottom:0}.md dt{font-weight:600}.md dd{color:var(--ink-2);margin:0 0 .6em 1.4em}.md .footnotes{border-top:1px solid var(--line);color:var(--ink-2);margin-top:3em;padding-top:1.2em;font-size:.88em}.md .footnotes ol{margin-bottom:0}.md .sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.md [data-footnote-ref]{padding:0 .1em;font-size:.8em;text-decoration:none}