@font-face{font-family:Charter;src:local("Charter"),local("Charter-Roman");font-display:swap;font-weight:400;font-style:normal}@font-face{font-family:Charter;src:local("Charter Italic"),local("Charter-Italic");font-display:swap;font-weight:400;font-style:italic}@font-face{font-family:Charter;src:local("Charter Bold"),local("Charter-Bold");font-display:swap;font-weight:700;font-style:normal}:root{--bg: #f3eee4;--bg-elev: #ece5d5;--paper: #faf6ec;--ink: #2a2826;--ink-soft: #5a5650;--ink-faint: #8a857c;--rule: #d4ccba;--accent: #6c2516;--accent-soft: #a14a36;--link: #6c2516;--link-hover: #2a2826;--font-body: "Charter", "Iowan Old Style", "Source Serif 4", "Source Serif Pro", "Georgia", "Cambria", serif;--font-display: var(--font-body);--font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;--font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--measure: 36rem;--measure-wide: 44rem}[data-theme=dark]{--bg: #1a1816;--bg-elev: #221f1c;--paper: #1f1d1a;--ink: #ddd5c5;--ink-soft: #b1a995;--ink-faint: #7d7765;--rule: #3a352e;--accent: #d6826b;--accent-soft: #b06853;--link: #d6826b;--link-hover: #f0d9c8}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:18px;line-height:1.65;font-feature-settings:"kern" 1,"liga" 1,"onum" 1;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{min-height:100vh}a{color:var(--link);text-decoration:none;border-bottom:1px solid currentColor;transition:color .12s ease}a:hover{color:var(--link-hover)}.app{display:block;min-height:100vh;min-height:100dvh}.topbar{position:fixed;top:0;left:0;right:0;height:3.2rem;z-index:30;background:var(--bg);border-bottom:1px solid var(--rule);display:flex;align-items:center;padding:0 1.2rem;gap:1rem;font-family:var(--font-ui);font-size:.9rem}.layout{padding-top:3.2rem}.topbar .progress{position:absolute;bottom:-1px;left:0;height:2px;background:var(--accent);transition:width 80ms linear;width:0}.topbar .brand{font-family:var(--font-display);font-weight:700;font-size:1.05rem;color:var(--ink);border:none;letter-spacing:.01em}.topbar .spacer{flex:1}.topbar button,.topbar a.btn{font:inherit;background:transparent;border:1px solid var(--rule);color:var(--ink-soft);padding:.3rem .7rem;border-radius:4px;cursor:pointer;text-transform:lowercase;letter-spacing:.02em}.topbar button:hover,.topbar a.btn:hover{border-color:var(--ink-soft);color:var(--ink)}.layout{display:grid;grid-template-columns:minmax(0,16rem) minmax(0,1fr);gap:0;align-items:start}.sidebar-overlay{position:fixed;inset:0;z-index:35;background:#0006;display:none}.sidebar{border-right:1px solid var(--rule);background:var(--bg-elev);position:sticky;top:3.2rem;height:calc(100vh - 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