:root{--ink:#1d252f;--ink-muted:#546172;--paper:#f9f5ec;--paper-deep:#efe3cf;--line:#c9bca8;--accent:#2f4c63;--accent-soft:#d7e3ec;--danger:#b64f42;font-family:Source Sans\ 3,IBM Plex Sans,sans-serif;color:var(--ink);background:radial-gradient(circle at 0 0,rgba(215,227,236,.8),transparent 45%),linear-gradient(145deg,#f5efe3,#f9f5ec 45%,#f2e8d7)}*{box-sizing:border-box}body{margin:0;min-width:320px}.notebook-shell{max-width:980px;margin:0 auto;padding:max(14px,env(safe-area-inset-top)) max(14px,env(safe-area-inset-right)) max(90px,env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left));display:grid;grid-gap:12px;gap:12px}.notebook-header{border:1px solid var(--line);border-radius:16px;padding:14px;background:linear-gradient(180deg,hsla(0,0%,100%,.95),hsla(38,55%,91%,.95));box-shadow:0 7px 22px rgba(29,37,47,.1)}.tiny-kicker{margin:0;font-size:.73rem;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-muted)}.notebook-header h1{margin:4px 0;font-family:"IBM Plex Serif",Georgia,serif;font-size:1.3rem}.lede{margin:0;color:var(--ink-muted)}.header-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px}.status-pill{border:1px solid #9cb1c2;border-radius:999px;padding:4px 9px;background:var(--accent-soft);font-size:.75rem}.view-tabs{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:6px;gap:6px;position:-webkit-sticky;position:sticky;top:0;z-index:3;padding:8px;border:1px solid var(--line);border-radius:14px;background:hsla(42,52%,95%,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.view-tabs button{min-height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:.82rem;font-weight:700}.view-tabs button.is-active{border-color:#7f97ab;background:linear-gradient(180deg,#eef5fb,#d9e6f1)}.note-card{border:1px solid var(--line);border-radius:16px;padding:14px;background:linear-gradient(180deg,hsla(0,0%,100%,.95),hsla(39,52%,94%,.95));box-shadow:0 5px 15px rgba(29,37,47,.08)}.note-card h2,.note-card h3,.note-card h4{font-family:"IBM Plex Serif",Georgia,serif}label{display:block;margin:10px 0 5px;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-muted);font-weight:700}button,input,select,textarea{font:inherit}input,select,textarea{width:100%;border-radius:10px;border:1px solid var(--line);min-height:44px;padding:10px 12px;color:var(--ink);background:hsla(0,0%,100%,.95)}button{border:0;border-radius:10px;min-height:44px;padding:10px 13px;background:var(--accent);color:#fff;font-weight:700}.ghost-btn{border:1px solid #8ea3b4;background:#fff;color:var(--ink)}.action-row{display:flex;flex-wrap:wrap;gap:8px;margin:7px 0 11px}.action-row button{flex:1 1 150px}.status-line{border:1px solid var(--line);border-radius:9px;margin:8px 0;padding:8px 10px;background:#f9f4ea}.status-line--error{border-color:#d6aca2;color:var(--danger);background:#f8ece9}.subtle{margin:0;color:var(--ink-muted)}.record-list{list-style:none;margin:8px 0 0;padding:0;display:grid;grid-gap:8px;gap:8px}.record-item{border:1px solid var(--line);border-radius:10px;background:linear-gradient(180deg,#fffefb,#f4ecdd);padding:9px 10px}.record-meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:5px}.record-tag{border:1px solid #9eb0bf;border-radius:999px;font-size:.7rem;letter-spacing:.04em;text-transform:uppercase;padding:2px 8px;background:#e8eff5}.record-mono{margin-left:auto;font-family:IBM Plex Mono,monospace;font-size:.72rem;color:var(--ink-muted)}.record-text{margin:7px 0 0;overflow-wrap:anywhere}.element-group,.foldout,.policy-card{border:1px solid var(--line);border-radius:12px;padding:10px;background:#f9f3e7;margin:9px 0}.foldout summary{cursor:pointer;font-weight:700}.checkbox-row{display:flex;align-items:center;gap:8px;margin:7px 0;text-transform:none;letter-spacing:0}.checkbox-row input{width:18px;min-height:18px;margin:0}.profile-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));grid-gap:8px;gap:8px}.profile-card{border:1px solid var(--line);border-radius:12px;padding:10px;background:linear-gradient(180deg,#fff,#f2e9d8)}.profile-card h3{margin:0;font-size:1rem}.profile-card p{margin:6px 0 0;color:var(--ink-muted)}.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}.chip{border:1px solid #97acbd;border-radius:999px;padding:2px 8px;font-size:.74rem;background:#e5edf4}.graph-preview{display:grid;grid-gap:8px;gap:8px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.graph-node{padding:8px;background:#fff;display:grid;grid-gap:4px;gap:4px}.graph-node,pre{border:1px solid var(--line);border-radius:10px}pre{margin:8px 0;padding:10px;min-height:140px;background:#fbf7ef;white-space:pre-wrap;overflow-wrap:anywhere}.assistant-fab{position:fixed;right:max(14px,env(safe-area-inset-right));bottom:max(14px,env(safe-area-inset-bottom));width:58px;height:58px;border-radius:999px;border:2px solid #fff;box-shadow:0 8px 24px rgba(29,37,47,.3);z-index:20}.assistant-layer{position:fixed;inset:0;z-index:25;background:rgba(20,27,35,.42);display:flex;align-items:flex-end}.assistant-sheet{width:100%;max-width:720px;margin:0 auto;border-radius:18px 18px 0 0;border:1px solid var(--line);border-bottom:0;background:#fffef9;padding:14px}.assistant-head{display:flex;justify-content:space-between;align-items:center;gap:8px}.assistant-head h2{margin:0;font-size:1.1rem}@media (min-width:900px){.notebook-shell{grid-template-columns:minmax(0,1fr)}.view-tabs{position:static;max-width:640px}}