:root{color-scheme:light;--bg: #ffffff;--fg: #18181b;--muted: #71717a;--muted-2: #a1a1aa;--border: #e4e4e7;--hover: #f4f4f5;--active-bg: #18181b;--active-fg: #ffffff;font-family:Inter,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;height:100dvh;margin:0;width:100%}body{background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased}a{color:var(--fg)}.app-shell{display:flex;height:100vh;height:100dvh;width:100%;overflow:hidden}.app-main{flex:1;min-width:0;overflow:auto;display:flex;flex-direction:column}.sidebar{flex:0 0 auto;background:#fafafa;border-right:1px solid var(--border);display:flex;flex-direction:column;padding:12px 10px;gap:2px;transition:width .2s ease}.sidebar-brand{display:flex;align-items:center;gap:8px;padding:6px 6px 16px}.sidebar-mark{width:24px;height:24px;border-radius:6px;flex:0 0 auto;background:var(--fg)}.sidebar-wordmark{font-weight:600;font-size:14.5px;letter-spacing:-.01em;white-space:nowrap}.sidebar-spacer{flex:1}.sidebar-spacer-sm{height:10px}.sidebar-section-label{padding:0 9px 4px;font-size:10.5px;font-weight:600;letter-spacing:.06em;color:var(--muted-2);text-transform:uppercase}.nav-item{display:flex;align-items:center;gap:10px;padding:7px 9px;border-radius:6px;cursor:pointer;color:#3f3f46;text-decoration:none;font-size:13.5px;font-weight:500;white-space:nowrap;border:none;background:transparent;width:100%;font-family:inherit;transition:background .15s ease,color .15s ease}.nav-item:hover{background:var(--hover)}.nav-item-active{background:var(--active-bg);color:var(--active-fg)}.nav-item-active:hover{background:var(--active-bg)}.nav-item-muted{color:var(--muted-2)}.greeting{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:0 32px}.greeting h1{font-weight:600;font-size:30px;line-height:1.3;letter-spacing:-.01em;margin:0 0 8px}.greeting p{font-size:15px;color:var(--muted);margin:0}.notes-page{padding:32px 40px}.notes-page h2{font-weight:600;font-size:18px;letter-spacing:-.01em;margin:0 0 3px}.notes-page-subtitle{font-size:13px;color:var(--muted);margin:0 0 20px}.notes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:12px;max-width:760px}.note-card{background:#fff;border:1px solid var(--border);border-radius:8px;padding:14px;cursor:pointer;text-decoration:none;color:inherit;display:block;transition:border-color .15s ease,box-shadow .15s ease}.note-card:hover{border-color:#d4d4d8;box-shadow:0 1px 2px #0000000a}.note-card-icon{width:28px;height:28px;border-radius:6px;background:var(--hover);color:var(--fg);display:flex;align-items:center;justify-content:center;margin-bottom:10px}.note-card h3{font-size:13.5px;font-weight:600;margin:0 0 3px}.note-card p{font-size:12px;color:var(--muted);margin:0 0 10px;line-height:1.4}.note-card-lock{display:flex;align-items:center;gap:4px;font-size:11px;font-weight:500;color:var(--muted-2)}.topic-page{padding:32px 40px;max-width:640px}.back-link{color:var(--muted);text-decoration:none;font-size:13px}.topic-page h2{font-weight:600;font-size:20px;margin:12px 0 20px}.unlock-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.unlock-form label{display:none}.unlock-form input{flex:1;min-width:160px;padding:8px 12px;border-radius:6px;border:1px solid var(--border);background:#fff;color:var(--fg);font-family:inherit;font-size:13.5px}.unlock-form button,.notes-header button{padding:8px 14px;border-radius:6px;border:1px solid var(--fg);background:var(--fg);color:#fff;cursor:pointer;font-weight:500;font-size:13.5px;font-family:inherit}.unlock-form button:disabled,.notes-header button:disabled{opacity:.5;cursor:default}.error{color:#dc2626;width:100%;font-size:13px}.hint{color:var(--muted);font-size:13px}.notes-header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px}.updated-at{font-size:12px;color:var(--muted-2);margin:0}.summary{font-size:14px;color:var(--fg)}.notes-content section{margin-top:20px}.notes-content section h2{font-size:13px;font-weight:600;border-bottom:1px solid var(--border);padding-bottom:6px;margin:0 0 10px}.notes-content li{font-size:13.5px;line-height:1.6}@media (max-width: 640px){.greeting{padding:0 20px}.greeting h1{font-size:24px}.notes-page,.topic-page{padding:20px}.notes-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}}