:root{--bg: #0f172a;--bg-soft: #1e293b;--surface: #ffffff;--surface-alt: #f8fafc;--text: #0f172a;--text-muted: #64748b;--border: #e2e8f0;--primary: #2563eb;--primary-dark: #1d4ed8;--success: #16a34a;--warning: #f59e0b;--danger: #dc2626;--radius: 12px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--shadow: 0 10px 25px -5px rgba(15, 23, 42, .1);font-family:Pretendard,Segoe UI,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;background:var(--surface-alt);color:var(--text)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit;font-size:.95rem}.app{display:flex;flex-direction:column;min-height:100vh}.nav{background:var(--bg);color:#fff;padding:14px 28px;display:flex;align-items:center;gap:24px;box-shadow:var(--shadow)}.nav .logo{font-weight:700;font-size:1.2rem;letter-spacing:-.02em}.nav a{color:#cbd5e1}.nav a.active{color:#fff;font-weight:600}.container{max-width:1060px;margin:0 auto;padding:32px 28px;width:100%}.card{background:var(--surface);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm);border:1px solid var(--border)}.card+.card{margin-top:18px}h1{margin:0 0 8px;font-size:1.8rem;letter-spacing:-.02em}h2{margin:0 0 12px;font-size:1.3rem}p.lead{color:var(--text-muted);margin:0 0 24px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-size:.85rem;color:var(--text-muted)}.field input,.field select{height:40px;padding:0 12px;border:1px solid var(--border);border-radius:8px;font-size:.95rem;background:#fff}.field input:focus,.field select:focus{outline:2px solid var(--primary);outline-offset:1px}.actions{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}.btn{background:var(--primary);color:#fff;border:0;border-radius:8px;height:44px;padding:0 22px;font-weight:600}.btn:hover{background:var(--primary-dark)}.btn.secondary{background:transparent;color:var(--primary);border:1px solid var(--primary)}.result{background:linear-gradient(135deg,#eff6ff,#dbeafe);border-radius:var(--radius);padding:28px;border:1px solid #bfdbfe;margin-top:22px}.result .headline{font-size:2.4rem;font-weight:700;color:var(--primary-dark);margin:0}.result .ci{color:var(--text-muted);margin-top:4px}.result table{margin-top:14px;width:100%;border-collapse:collapse;font-size:.9rem}.result table td{padding:6px 8px;border-bottom:1px solid rgba(0,0,0,.05)}.result table td:first-child{color:var(--text-muted);width:42%}.result ul.notes{margin:12px 0 0;padding-left:18px;color:var(--text-muted);font-size:.9rem}.upload{border:2px dashed var(--border);border-radius:var(--radius);padding:28px;text-align:center;background:var(--surface-alt)}.upload input[type=file]{display:block;margin:12px auto 0}.upload.drag{border-color:var(--primary);background:#eff6ff}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.75rem;font-weight:600;background:#dbeafe;color:#1e3a8a;margin-left:8px}.data-grid{width:100%;border-collapse:collapse;font-size:.9rem;margin-top:8px}.data-grid th,.data-grid td{padding:9px 12px;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap}.data-grid th{color:var(--text-muted);font-weight:600;font-size:.78rem;background:var(--surface-alt)}.data-grid tbody tr:hover{background:var(--surface-alt)}.footer{text-align:center;padding:24px;color:var(--text-muted);font-size:.85rem}.error{color:var(--danger);font-size:.9rem;margin-top:6px;white-space:pre-line;line-height:1.45}.warning-banner{background:#fef3c7;border:1px solid #f59e0b;border-left:4px solid #d97706;border-radius:8px;padding:14px 16px;margin-bottom:14px}.warning-banner h4{margin:0 0 6px;color:#92400e;font-size:1rem}.warning-banner ul{margin:4px 0 8px 18px;padding:0;color:#78350f;font-size:.9rem}.warning-banner .action{display:inline-block;background:#d97706;color:#fff;padding:6px 12px;border-radius:6px;font-size:.85rem;font-weight:600;margin-top:4px}.override-hint{background:#dbeafe;border-left:3px solid var(--primary);padding:8px 12px;border-radius:6px;font-size:.85rem;color:#1e3a8a;margin-top:6px}.hero{background:linear-gradient(135deg,#1e40af,#2563eb);color:#fff;border-radius:var(--radius);padding:40px 36px;margin-bottom:24px}.hero h1{font-size:2.2rem;margin-bottom:8px}.hero p{opacity:.9;max-width:640px;margin:0}.hero .cta-row{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}.hero .cta-row a{background:#fff;color:var(--primary-dark);padding:10px 20px;border-radius:8px;font-weight:600}.hero .cta-row a.ghost{background:transparent;border:1px solid rgba(255,255,255,.6);color:#fff}