:root{--bg: #0e1320;--panel: #182135;--panel2: #1f2b44;--ink: #e7ecf6;--muted: #8da0c4;--accent: #5a7ad0;--accent2: #7d97e0;--good: #4fbf8b;--bad: #e0708a;--herring: #d9a441;--line: #2a3a5c}*{box-sizing:border-box}html,body{margin:0}body{background:radial-gradient(1200px 600px at 50% -10%,#16203a,var(--bg));color:var(--ink);font:16px/1.5 Segoe UI,system-ui,-apple-system,sans-serif;min-height:100vh}#app{max-width:920px;margin:0 auto;padding:22px 16px 64px;position:relative}header h1{margin:0;font-size:30px;letter-spacing:3px;font-weight:800;background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}header .sub{margin:4px 0 16px;color:var(--muted);font-size:14px}.bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:14px}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}.seg button{background:transparent;color:var(--muted);border:0;padding:8px 14px;cursor:pointer;font-size:13px;font-weight:600}.seg button.active{background:var(--accent);color:#fff}.btn{background:var(--panel2);color:var(--ink);border:1px solid var(--line);padding:8px 16px;border-radius:10px;cursor:pointer;font-weight:600;font-size:13px}.btn:hover{border-color:var(--accent)}.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn.primary:disabled{opacity:.45;cursor:not-allowed}.scoreboard{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap}.readout{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px 14px;font-weight:700;font-size:15px}.readout span{display:block;color:var(--muted);font-size:10px;letter-spacing:1.5px;font-weight:700}.stage{display:grid;gap:16px}@media(min-width:760px){.stage{grid-template-columns:1fr 1fr;align-items:start}}.passage{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px}.passage h2{margin:0 0 10px;font-size:18px;color:var(--accent2)}.sentences{display:flex;flex-direction:column;gap:6px}.sentence{margin:0;padding:8px 10px 8px 8px;border-radius:8px;cursor:pointer;border:1px solid transparent;transition:background .1s,border-color .1s}.sentence:hover{background:var(--panel2)}.snum{display:inline-block;min-width:22px;height:20px;line-height:20px;text-align:center;margin-right:8px;background:var(--panel2);color:var(--muted);border-radius:6px;font-size:11px;font-weight:700}.sentence.flagged{background:#d9a44124;border-color:var(--herring);text-decoration:line-through;color:var(--muted)}.sentence.cited{background:#5a7ad033;border-color:var(--accent)}.sentence.herring-true{outline:2px solid var(--good)}.sentence.herring-false{outline:2px solid var(--bad)}.citebanner{margin-top:10px;padding:8px 10px;border-radius:8px;font-size:13px;background:#5a7ad029;border:1px dashed var(--accent);color:var(--accent2)}.questions{display:flex;flex-direction:column;gap:12px}.qcard{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px}.qtext{font-weight:600;margin-bottom:10px}.badge{display:inline-block;font-size:10px;font-weight:800;letter-spacing:1px;padding:2px 7px;border-radius:6px;background:var(--accent);color:#fff;margin-right:6px;vertical-align:middle}.badge.plain{background:var(--panel2);color:var(--muted)}.opts{display:flex;flex-direction:column;gap:6px}.opt{text-align:left;background:var(--panel2);color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:9px 12px;cursor:pointer;font-size:14px}.opt:hover{border-color:var(--accent)}.opt.sel{border-color:var(--accent);background:#5a7ad038}.opt.right{border-color:var(--good);background:#4fbf8b2e}.opt.wrong{border-color:var(--bad);background:#e0708a2e}.cite-btn{margin-top:10px;background:transparent;color:var(--accent2);border:1px solid var(--line);border-radius:9px;padding:6px 12px;cursor:pointer;font-size:13px;font-weight:600}.cite-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.citeresult{margin-top:10px;font-size:13px;padding:6px 10px;border-radius:8px}.citeresult.good{background:#4fbf8b26;color:var(--good)}.citeresult.bad{background:#e0708a26;color:var(--bad)}.actions{grid-column:1 / -1;display:flex;justify-content:center;margin-top:4px}.hint{margin-top:18px;color:var(--muted);font-size:13px;text-align:center}.overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#060a14b3;z-index:20;backdrop-filter:blur(3px)}.overlay.hidden{display:none}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px 30px;text-align:center;max-width:380px;box-shadow:0 20px 60px #00000080}.card h2{margin:0 0 12px;color:var(--accent2)}.card p{margin:6px 0;color:var(--ink)}.card .score{font-size:22px;font-weight:800;color:var(--accent2);margin:12px 0}.card .row{margin-top:16px}