:root{--bg: #f5f6f8;--surface: #ffffff;--text: #1a1d21;--muted: #5b6068;--border: #d7dbe0;--accent: #3b5bdb;--accent-text: #ffffff;--badge: #b5179e;--focus: #1c4dd6}[data-theme=dark]{--bg: #14161a;--surface: #1e2127;--text: #e8eaed;--muted: #9aa0a8;--border: #333842;--accent: #6b8afd;--accent-text: #0b0d10;--badge: #e879c8;--focus: #9db4ff}[data-theme=high-contrast]{--bg: #000000;--surface: #000000;--text: #ffffff;--muted: #ffffff;--border: #ffffff;--accent: #ffff00;--accent-text: #000000;--badge: #00ffff;--focus: #ffff00}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.skip-link{position:absolute;left:0;top:-48px;padding:8px 16px;background:var(--accent);color:var(--accent-text);z-index:100;transition:top .2s}.skip-link:focus{top:0}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--border)}.topbar h1{font-size:1.2rem;margin:0}.topbar-actions{display:flex;gap:12px;align-items:center}main{max-width:880px;margin:0 auto;padding:20px}.card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px 20px;margin-bottom:20px}.btn{font:inherit;padding:8px 14px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);cursor:pointer}.btn-primary{background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.btn:hover{filter:brightness(.97)}.login{text-align:center;max-width:520px;margin:40px auto}.theme-picker{display:flex;align-items:center;gap:6px;font-size:.9rem}.theme-picker select{font:inherit;padding:4px 6px;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:6px}.tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.tab{font:inherit;text-transform:capitalize;padding:8px 16px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--text);cursor:pointer}.tab[aria-pressed=true]{background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.greeting{color:var(--muted)}.objective-list{list-style:none;padding:0;margin:0}.objective{display:grid;grid-template-columns:1fr auto;gap:2px 12px;padding:8px 0;border-bottom:1px solid var(--border)}.objective-progress{color:var(--muted);font-variant-numeric:tabular-nums}.objective progress{grid-column:1 / -1;width:100%;height:6px}.session{padding:8px 0;border-top:1px solid var(--border)}.session:first-of-type{border-top:0}.session-summary{font-weight:600}.badge{background:var(--badge);color:var(--accent-text);border-radius:6px;padding:1px 6px;font-size:.75rem}.muted{color:var(--muted)}.also{color:var(--muted);font-size:.92rem;margin:4px 0 0;padding-left:18px}.reroll{margin-top:12px;border-top:1px dashed var(--border);padding-top:8px}.reroll h4{margin:0 0 4px}.reroll ul{margin:0;padding-left:18px;color:var(--muted)}h2,h3,h4{line-height:1.25}