:root{--ink:#183631;--muted:#6d7d78;--cream:#f8f5ed;--paper:#fffefa;--line:#e2e2d9;--orange:#ed633e;--sage:#dce9df;--yellow:#f7e8b0}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font:15px/1.6 'Noto Sans TC',sans-serif}.app-shell{min-height:100vh;display:flex}.sidebar{position:fixed;width:242px;height:100vh;background:#173b35;color:#f6f4e9;padding:32px 22px;display:flex;flex-direction:column}.brand{color:inherit;text-decoration:none;display:flex;gap:11px;align-items:center;font:700 18px/1.05 'Playfair Display',serif;letter-spacing:.3px;margin:0 10px 46px}.brand em{font:400 12px 'DM Mono',monospace;color:#b8c9c0}.brand-mark{width:34px;height:34px;border:1px solid #d4dfcf;border-radius:50%;display:grid;place-items:center;font:700 26px 'Playfair Display'}.sidebar nav{display:grid;gap:6px}.nav-item{border:0;color:#d8e0d8;background:transparent;text-align:left;padding:11px 12px;border-radius:5px;font:500 14px 'Noto Sans TC';cursor:pointer}.nav-item 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