body{margin:0;font-family:PingFang SC,Microsoft YaHei,Arial,sans-serif;color:#1f2937;background:#f6f8fb}.help-center{box-sizing:border-box;max-width:1120px;margin:24px auto 40px;padding:0 16px}.help-header{background:#fff;border-radius:12px;padding:28px 32px;box-shadow:0 8px 24px rgba(15,23,42,.06)}.help-header h1{margin:0;font-size:30px;line-height:1.3;color:#111827}.help-header p{margin:10px 0 0;color:#4b5563;font-size:14px}.help-section{margin-top:18px;background:#fff;border-radius:12px;padding:22px 26px;box-shadow:0 8px 24px rgba(15,23,42,.06)}.help-section h2{margin:0 0 14px;font-size:22px;color:#0f172a}.help-section h3{margin:20px 0 10px;font-size:17px;color:#1d4ed8}.help-section ol,.help-section ul{margin:0;padding-left:22px}.help-section li{margin:8px 0;line-height:1.7}.help-tip{margin:12px 0 0;padding:10px 12px;border-left:3px solid #60a5fa;background:#eff6ff;color:#1e3a8a;font-size:13px}.help-image-note{margin-left:8px;color:#6b7280;font-size:12px}.help-nav{margin-top:18px;background:#fff;border-radius:12px;padding:22px 26px;box-shadow:0 8px 24px rgba(15,23,42,.06)}.help-nav h2{margin:0 0 14px;font-size:22px;color:#0f172a}.help-nav-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px 16px}.help-nav-grid a{color:#1d4ed8;text-decoration:none;font-size:14px;line-height:1.6}.help-nav-grid a:hover{text-decoration:underline}.help-nav-group{margin-bottom:14px}.help-nav-group-title{margin:0 0 6px;font-size:14px;font-weight:600;color:#374151}.help-feature{margin-top:14px;padding:16px 18px;border:1px solid #e5e7eb;border-radius:8px;background:#fafbfc}.help-feature h4{margin:0 0 8px;font-size:16px;color:#111827}.help-feature p{margin:0 0 8px;line-height:1.7;color:#374151;font-size:14px}.help-feature ol,.help-feature ul{margin:0;padding-left:20px}.help-feature li{margin:6px 0;line-height:1.7;font-size:14px;color:#374151}.help-path{display:inline-block;margin-bottom:8px;padding:2px 8px;border-radius:4px;background:#e0e7ff;color:#3730a3;font-size:12px}