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7px 18px #e11d4847}.btn.success{background:linear-gradient(135deg,#10b981,var(--ok));box-shadow:0 3px 10px #05966933}.btn.subtle{background:transparent;color:var(--muted);border-color:transparent;box-shadow:none;padding:7px 11px}.btn.subtle:hover{background:var(--surface-2);color:var(--ink-2);box-shadow:none;transform:none}.btn.sm{padding:6px 13px;font-size:12.5px;border-radius:var(--r-sm);gap:5px}.btn.lg{padding:13px 26px;font-size:15px;border-radius:var(--r-lg)}.btn.block{width:100%}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow-sm);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease}.card-clickable{cursor:pointer}.card-clickable:hover{transform:translateY(-2px);border-color:var(--brand-200);box-shadow:var(--shadow)}.card-flat{box-shadow:none}.panel{border:1px solid var(--line);border-radius:var(--r-xl);background:linear-gradient(180deg,#ffffffc7,#f8fafc8c);padding:22px 22px 10px;box-shadow:var(--shadow-sm);margin-bottom:20px}input[type=text],input[type=password],input[type=email],input[type=tel],input[type=number],input[type=search],textarea,select{width:100%;border:1.5px solid var(--line-strong);border-radius:var(--r-sm);padding:11px 14px;background:var(--surface);color:var(--ink-2);font-size:14.5px;outline:none;transition:border-color .16s ease,box-shadow .16s ease}input::placeholder,textarea::placeholder{color:var(--faint)}input:focus,textarea:focus,select:focus{border-color:var(--brand-400);box-shadow:0 0 0 3px #0891b21f}.field{display:grid;gap:7px}.field-label{font-size:12.5px;font-weight:600;color:var(--muted);letter-spacing:.02em}.tag{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:var(--r-full);font-size:12px;font-weight:600;background:var(--surface-2);color:var(--muted);border:1px solid var(--line-strong);white-space:nowrap}.tag.brand{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-200)}.tag.ok{background:var(--ok-soft);color:var(--ok);border-color:var(--ok-line)}.tag.bad{background:var(--bad-soft);color:var(--bad);border-color:var(--bad-line)}.tag.warn{background:#fef3c7;color:var(--warn);border-color:#fcd34d}.tag.off{opacity:.5}.chip-num{flex-shrink:0;width:26px;height:26px;display:grid;place-items:center;border-radius:var(--r-xs);background:var(--brand-50);color:var(--brand-700);font-size:12.5px;font-weight:700}.page-head{display:flex;align-items:center;gap:12px;margin-bottom:22px;flex-wrap:wrap}.page-head-icon{width:42px;height:42px;border-radius:var(--r);display:grid;place-items:center;background:var(--brand-50);color:var(--brand-600);border:1px solid var(--brand-100);flex-shrink:0}.page-head h2{margin:0;font-size:22px;color:var(--ink);font-weight:700}.page-head .sub{color:var(--muted);font-size:13px}.opt-row{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;border:1.5px solid var(--line-strong);border-radius:var(--r);padding:13px 15px;background:var(--surface);color:var(--body);font-size:14.5px;line-height:1.6;transition:border-color .14s ease,background .14s ease,box-shadow .14s ease,transform .14s ease}button.opt-row{cursor:pointer}button.opt-row:hover:not(:disabled){transform:translateY(-1px);border-color:var(--brand-300);box-shadow:var(--shadow-sm)}.opt-row .key{flex-shrink:0;width:26px;height:26px;display:grid;place-items:center;border-radius:var(--r-xs);background:var(--surface-2);border:1px solid var(--line-strong);color:var(--muted);font-size:12.5px;font-weight:700}.opt-row.picked{border-color:var(--brand-400);background:var(--brand-50);box-shadow:0 0 0 3px #0891b21a}.opt-row.picked .key{background:var(--brand-600);border-color:var(--brand-600);color:#fff}.opt-row.correct{border-color:var(--ok-line);background:#f0fdf7}.opt-row.correct .key{background:var(--ok);border-color:var(--ok);color:#fff}.opt-row.wrong{border-color:var(--bad-line);background:#fff1f3}.opt-row.wrong .key{background:var(--bad);border-color:var(--bad);color:#fff}.ai-panel{margin-top:14px;border:1px solid var(--accent-200);border-radius:var(--r);background:linear-gradient(180deg,#f5f6ff,#f9faff);padding:15px 16px}.ai-panel-head{display:flex;align-items:center;gap:8px;margin-bottom:9px;color:var(--accent-700);font-size:13.5px;font-weight:700}.ai-panel pre{white-space:pre-wrap;margin:0;font-family:inherit;font-size:14px;line-height:1.75;color:var(--body)}.empty{display:grid;justify-items:center;gap:8px;text-align:center;padding:56px 24px;color:var(--muted)}.empty-icon{width:56px;height:56px;border-radius:var(--r-lg);display:grid;place-items:center;background:var(--brand-50);color:var(--brand-400);margin-bottom:6px}.empty-title{font-size:16px;font-weight:700;color:var(--ink-2)}.empty-hint{font-size:13px;color:var(--faint)}.skeleton-page{display:grid;gap:12px}.skeleton{height:14px;border-radius:var(--r-full);background:linear-gradient(90deg,#eef1f7 25%,#f7f9fc,#eef1f7 75%);background-size:220% 100%;animation:shimmer 1.4s linear infinite}@keyframes shimmer{0%{background-position:120% 0}to{background-position:-120% 0}}.progress{height:6px;border-radius:var(--r-full);background:var(--line-strong);overflow:hidden}.progress-fill{height:100%;border-radius:var(--r-full);background:var(--grad-brand);transition:width .4s cubic-bezier(.4,0,.2,1)}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;justify-content:center;align-items:center;padding:24px 16px;background:#0f172a70;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fade-in .18s ease both}.modal{width:min(460px,100%);background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:28px;box-shadow:var(--shadow-lg);animation:pop-in .22s cubic-bezier(.34,1.4,.64,1) both}@keyframes pop-in{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}@keyframes rise-in{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}.rise{animation:rise-in .45s cubic-bezier(.4,0,.2,1) both}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.fade{animation:fade-in .3s ease both}@keyframes soft-pulse{0%,to{opacity:1}50%{opacity:.55}}.pulse{animation:soft-pulse 1.8s ease-in-out infinite}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#cdd4e4;border-radius:var(--r-full);border:2px solid transparent;background-clip:content-box}::-webkit-scrollbar-thumb:hover{background:#b4bdd2;background-clip:content-box}::selection{background:var(--brand-100);color:var(--brand-900)}.mono-num{font-variant-numeric:tabular-nums}