*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f1f5f9;--surface: #ffffff;--border: #e2e8f0;--text: #1e293b;--muted: #64748b;--radius: 8px;--vulnerable: #dc2626;--vulnerable-bg: #fef2f2;--secure: #16a34a;--secure-bg: #f0fdf4;--accent: #2563eb}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.mode-banner{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:center;gap:12px;padding:10px 16px;font-size:1rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.mode-banner.vulnerable{background:var(--vulnerable);color:#fff}.mode-banner.secure{background:var(--secure);color:#fff}.toggle-btn{padding:4px 14px;border:2px solid rgba(255,255,255,.7);border-radius:20px;background:transparent;color:#fff;font-size:.78rem;font-weight:600;cursor:pointer;letter-spacing:.04em;transition:background .15s}.toggle-btn:hover{background:#fff3}nav{background:var(--surface);border-bottom:1px solid var(--border);padding:0 24px;display:flex;align-items:center;gap:16px;height:56px}.nav-brand{font-size:1.25rem;font-weight:700;color:var(--accent);text-decoration:none}.nav-spacer{flex:1}.nav-user{font-size:.875rem;color:var(--muted)}.btn{padding:6px 16px;border-radius:var(--radius);border:none;font-size:.875rem;font-weight:600;cursor:pointer;transition:opacity .15s}.btn:hover{opacity:.85}.btn-primary{background:var(--accent);color:#fff}.btn-danger{background:var(--vulnerable);color:#fff}.btn-success{background:var(--secure);color:#fff}.btn-ghost{background:var(--border);color:var(--text)}.tabs{display:flex;gap:4px;padding:16px 24px 0}.tab-btn{padding:8px 20px;border:1px solid var(--border);border-bottom:none;border-radius:var(--radius) var(--radius) 0 0;background:var(--bg);font-size:.9rem;font-weight:500;cursor:pointer;color:var(--muted)}.tab-btn.active{background:var(--surface);color:var(--text);font-weight:700}.content{max-width:1100px;margin:0 auto;padding:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.card+.card{margin-top:16px}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:32px}.product-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:center}.product-card .emoji{font-size:3rem}.product-card h3{margin:8px 0 4px;font-size:1rem}.product-card .price{font-size:1.25rem;font-weight:700;color:var(--accent)}.product-card .qty{font-size:.85rem;color:var(--muted);margin:4px 0 12px}.qty.low{color:var(--vulnerable);font-weight:700}.product-card .actions{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.review-form{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.review-form input,.review-form textarea{padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;font-family:inherit;resize:vertical}.review-list{display:flex;flex-direction:column;gap:8px}.review-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px}.review-author{font-size:.78rem;color:var(--muted);margin-bottom:4px}.demo-tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px}.demo-tab-btn{padding:6px 14px;border:1px solid var(--border);border-radius:20px;background:var(--bg);font-size:.85rem;cursor:pointer;color:var(--muted)}.demo-tab-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.demo-section h3{font-size:1rem;margin-bottom:6px}.demo-section p{font-size:.9rem;color:var(--muted);margin-bottom:12px;line-height:1.5}.code-block{background:#1e293b;color:#e2e8f0;padding:12px 16px;border-radius:var(--radius);font-family:Courier New,monospace;font-size:.82rem;white-space:pre-wrap;word-break:break-all;margin:10px 0}.result-box{padding:10px 14px;border-radius:var(--radius);font-family:Courier New,monospace;font-size:.82rem;margin-top:10px;white-space:pre-wrap;word-break:break-all}.result-box.success{background:var(--secure-bg);border:1px solid var(--secure);color:var(--secure)}.result-box.error{background:var(--vulnerable-bg);border:1px solid var(--vulnerable);color:var(--vulnerable)}.result-box.info{background:#eff6ff;border:1px solid #93c5fd;color:#1e40af}.log-viewer{background:#0f172a;border-radius:var(--radius);padding:12px;height:260px;overflow-y:auto;font-family:Courier New,monospace;font-size:.78rem;color:#94a3b8}.log-viewer .log-line{padding:2px 0;border-bottom:1px solid #1e293b}.log-viewer .log-line:hover{background:#1e293b}.log-empty{color:#475569;font-style:italic}.headers-table{width:100%;border-collapse:collapse;font-size:.82rem}.headers-table th,.headers-table td{text-align:left;padding:6px 10px;border-bottom:1px solid var(--border)}.headers-table th{background:var(--bg);font-weight:600}.header-present{color:var(--secure);font-weight:600}.header-missing{color:var(--vulnerable)}.attack-results{max-height:200px;overflow-y:auto;display:flex;flex-direction:column;gap:3px;margin-top:10px}.attack-result-item{font-family:monospace;font-size:.8rem;padding:3px 8px;border-radius:4px}.attack-result-item.win{background:var(--vulnerable-bg);color:var(--vulnerable)}.attack-result-item.lose{background:#f8fafc;color:var(--muted)}.flex-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.mt-8{margin-top:8px}.mt-16{margin-top:16px}h2{font-size:1.25rem;margin-bottom:16px}label{font-size:.85rem;font-weight:600;color:var(--muted);display:block;margin-bottom:4px}.badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:.72rem;font-weight:700;text-transform:uppercase}.badge-vuln{background:var(--vulnerable-bg);color:var(--vulnerable)}.badge-secure{background:var(--secure-bg);color:var(--secure)}