:root{--bg:#faf6f0;--surface:#fffdfa;--primary:#b5603a;--primary-hover:#9c4f2e;--accent:#d9a441;--ink:#3a2e27;--ink-2:#6b5b4f;--muted:#9c8b7d;--line:#e8ddd1;--danger:#c1443b}*{box-sizing:border-box}body,html{padding:0;margin:0}body{font-family:-apple-system,PingFang TC,Microsoft JhengHei,sans-serif;color:var(--ink);background:var(--bg)}a{color:inherit}button{font-family:inherit;cursor:pointer;transition:filter .15s ease}button:hover:not(:disabled){filter:brightness(.94)}input,select,textarea{font-family:inherit;font-size:1rem}.app-shell-overlay,.app-shell-topbar{display:none}.app-shell-sidebar{position:fixed;top:0;left:0;bottom:0;width:240px;background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;z-index:40;transition:transform .2s ease}.app-shell-content{margin-left:240px;min-height:100vh}.app-shell-nav-link{display:flex;align-items:center;gap:10px;padding:10px 16px;color:var(--ink-2);text-decoration:none;font-size:.9rem;border-left:3px solid transparent}.app-shell-nav-link:hover{background:var(--bg);color:var(--primary-hover)}.app-shell-nav-link.active{background:color-mix(in srgb,var(--primary) 12%,var(--surface));color:var(--primary);border-left-color:var(--primary);font-weight:600}.app-shell-nav-link.disabled{color:var(--muted);cursor:default;opacity:.65}.app-shell-nav-link.disabled:hover{background:none;color:var(--muted)}@media (max-width:767px){.app-shell-topbar{display:flex;align-items:center;gap:12px;position:-webkit-sticky;position:sticky;top:0;z-index:30;background:var(--surface);border-bottom:1px solid var(--line);padding:14px 16px}.app-shell-sidebar{transform:translateX(-100%)}.app-shell-sidebar.open{transform:translateX(0)}.app-shell-content{margin-left:0}.app-shell-overlay.open{display:block;position:fixed;inset:0;background:rgba(58,46,39,.45);z-index:35}}