:root{--bg: #0f172a;--surface: #1e293b;--surface-2: #334155;--text: #f1f5f9;--text-dim: #94a3b8;--accent: #f59e0b;--accent-soft: #fef3c7;--border: #334155;--danger: #ef4444;--max: 720px;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.55;font-size:17px}main{max-width:var(--max);margin:0 auto;padding:32px 20px 80px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{line-height:1.25;margin:0 0 12px}h1{font-size:28px;font-weight:700}h2{font-size:22px;font-weight:600}h3{font-size:18px;font-weight:600;color:var(--text-dim)}p{margin:0 0 16px}button,.btn{display:inline-block;background:var(--accent);color:#1a1306;border:none;padding:12px 20px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;text-align:center}button:hover,.btn:hover{filter:brightness(1.08)}button:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}textarea,input[type=text]{width:100%;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:12px 14px;font-size:16px;font-family:inherit;resize:vertical}textarea{min-height:140px}textarea:focus,input:focus{outline:2px solid var(--accent);outline-offset:-1px}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:16px}.dim{color:var(--text-dim);font-size:14px}.hint{color:var(--text-dim);font-size:14px;margin:-8px 0 12px;font-style:italic}.row{display:flex;gap:12px;align-items:center}.row-between{display:flex;gap:12px;align-items:center;justify-content:space-between}.spacer{flex:1}.stack-12>*+*{margin-top:12px}.stack-24>*+*{margin-top:24px}.progress{height:6px;background:var(--surface-2);border-radius:3px;overflow:hidden;margin-bottom:24px}.progress-bar{height:100%;background:var(--accent);transition:width .2s}.insight{border-left:3px solid var(--accent);background:var(--surface);padding:16px 20px;border-radius:8px;margin:24px 0}.insight h3{color:var(--accent);margin-bottom:8px}.themes{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.tag{display:inline-block;background:var(--surface-2);color:var(--text-dim);padding:4px 10px;border-radius:999px;font-size:13px}.list-item{display:block;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:14px 18px;margin-bottom:10px;color:var(--text)}.list-item:hover{border-color:var(--accent);text-decoration:none}.list-item .title{font-weight:600}.list-item .meta{font-size:13px;color:var(--text-dim);margin-top:2px}.q-counter{color:var(--text-dim);font-size:14px;margin-bottom:8px}.answer-block{margin-bottom:24px}.answer-block .q{color:var(--text-dim);font-size:14px;margin-bottom:4px}.answer-block .a{white-space:pre-wrap}