*,:after,:before{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px;line-height:1.5;color:#1a1a1a;background:#f5f5f5}.support-layout{display:flex;min-height:100vh}.support-nav{width:220px;background:#1a1a1a;color:#fff;padding:1rem 0;flex-shrink:0}.support-nav a{display:block;padding:.5rem 1rem;color:#ccc;text-decoration:none}.support-nav a.active,.support-nav a:hover{color:#fff;background:hsla(0,0%,100%,.08)}.support-main{flex:1 1;padding:1.5rem;overflow:auto}.support-header{margin-bottom:1.5rem;font-size:1.25rem;font-weight:600}.card{background:#fff;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.08);padding:1rem 1.25rem;margin-bottom:1rem}.btn{display:inline-block;padding:.5rem 1rem;font-size:14px;font-weight:500;text-align:center;border-radius:6px;border:none;cursor:pointer;text-decoration:none}.btn-primary{background:#2563eb;color:#fff}.btn-primary:hover{background:#1d4ed8}.btn-secondary{background:#e5e7eb;color:#374151}.btn-secondary:hover{background:#d1d5db}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.25rem;font-weight:500;color:#374151}.form-group input,.form-group select,.form-group textarea{width:100%;max-width:400px;padding:.5rem .75rem;border:1px solid #d1d5db;border-radius:6px;font-size:14px}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 2px rgba(37,99,235,.2)}.error-msg{color:#dc2626}.error-msg,.success-msg{font-size:13px;margin-top:.25rem}.success-msg{color:#059669}.chat-list-item{display:block;padding:.75rem 1rem;border-bottom:1px solid #eee;text-decoration:none;color:inherit}.chat-list-item:hover{background:#f9fafb}.chat-list-item .meta{font-size:12px;color:#6b7280;margin-top:.25rem}.message-row{margin-bottom:.75rem;padding:.5rem .75rem;border-radius:8px;max-width:85%}.message-row.user{background:#eff6ff;margin-left:0;margin-right:auto}.message-row.assistant{background:#f3f4f6;margin-left:auto;margin-right:0}.message-row .role{font-size:11px;font-weight:600;color:#6b7280;margin-bottom:.25rem}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}td,th{padding:.5rem .75rem;text-align:left;border-bottom:1px solid #e5e7eb}th{font-weight:600;color:#374151;background:#f9fafb}.empty-state{text-align:center;padding:2rem;color:#6b7280}.link{color:#2563eb;text-decoration:none}.link:hover{text-decoration:underline}