:root{--bg:#f8fafc;--bg-card:#ffffff;--bg-card-alt:#f1f5f9;--bg-input:#ffffff;--border:#e2e8f0;--border-focus:#3b82f6;--text:#0f172a;--text-muted:#64748b;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#dbeafe;--accent:#0d9488;--accent-light:#ccfbf1;--success:#16a34a;--success-light:#dcfce7;--danger:#dc2626;--danger-light:#fee2e2;--warning:#d97706;--warning-light:#fef3c7;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);--radius:10px;--font-sans:'Inter',system-ui,-apple-system,BlinkMacSystemFont,sans-serif;--font-head:'Outfit',system-ui,sans-serif}[data-theme="dark"]{--bg:#0b1120;--bg-card:#0f172a;--bg-card-alt:#1e293b;--bg-input:#0b1329;--border:#1e293b;--border-focus:#60a5fa;--text:#f8fafc;--text-muted:#94a3b8;--primary:#3b82f6;--primary-hover:#2563eb;--primary-light:#1e3a8a;--accent:#14b8a6;--accent-light:#134e4a;--success:#22c55e;--success-light:#14532d;--danger:#ef4444;--danger-light:#7f1d1d;--warning:#f59e0b;--warning-light:#78350f;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.5);--shadow:0 4px 6px -1px rgba(0,0,0,0.4);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.6)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column}a{color:var(--primary);text-decoration:none;transition:color 0.2s ease}a:hover{color:var(--primary-hover)}button,input,select,textarea{font-family:inherit}.site-header{position:sticky;top:0;z-index:1000;background:var(--bg-card);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);backdrop-filter:blur(8px)}.header-container{max-width:1280px;margin:0 auto;padding:0.75rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.brand{display:flex;align-items:center;gap:0.6rem;font-family:var(--font-head);font-weight:800;font-size:1.35rem;color:var(--text);text-decoration:none}.brand-icon{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:1.1rem;box-shadow:0 2px 4px rgba(37,99,235,0.3)}.brand span{color:var(--primary)}.nav-menu{display:flex;align-items:center;gap:1.5rem;list-style:none}.nav-item{position:relative}.nav-link{font-weight:600;font-size:0.95rem;color:var(--text);padding:0.5rem 0.75rem;border-radius:6px;display:flex;align-items:center;gap:0.35rem;transition:all 0.2s}.nav-link:hover{background:var(--bg-card-alt);color:var(--primary)}.nav-dropdown{position:relative}.dropdown-trigger{cursor:pointer}.dropdown-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);min-width:680px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:1.25rem;display:none;z-index:1100}.nav-dropdown:hover .dropdown-menu,.nav-dropdown:focus-within .dropdown-menu{display:block}.dropdown-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0.75rem}.dropdown-link{display:block;padding:0.45rem 0.6rem;font-size:0.85rem;color:var(--text);border-radius:6px;transition:background 0.15s,color 0.15s}.dropdown-link:hover{background:var(--primary-light);color:var(--primary)}.header-actions{display:flex;align-items:center;gap:0.75rem}.theme-toggle{background:var(--bg-card-alt);border:1px solid var(--border);color:var(--text);padding:0.5rem;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;width:40px;height:40px;transition:all 0.2s}.theme-toggle:hover{border-color:var(--border-focus);color:var(--primary)}.theme-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2}.mobile-toggle{display:none;background:var(--bg-card-alt);border:1px solid var(--border);color:var(--text);padding:0.5rem;border-radius:8px;cursor:pointer;width:40px;height:40px;align-items:center;justify-content:center}.mobile-toggle svg{width:22px;height:22px}.breadcrumb-bar{background:var(--bg-card-alt);border-bottom:1px solid var(--border);padding:0.6rem 1.25rem;font-size:0.85rem}.breadcrumb-container{max-width:1280px;margin:0 auto;display:flex;align-items:center;flex-wrap:wrap;gap:0.5rem}.breadcrumb-list{display:flex;align-items:center;gap:0.5rem;list-style:none;flex-wrap:wrap}.breadcrumb-item{display:flex;align-items:center;gap:0.5rem;color:var(--text-muted)}.breadcrumb-item a{color:var(--text-muted);font-weight:500}.breadcrumb-item a:hover{color:var(--primary)}.breadcrumb-item.active{color:var(--primary);font-weight:600}.breadcrumb-sep{font-size:0.75rem;color:var(--text-muted)}.main-content{flex:1;max-width:1280px;width:100%;margin:0 auto;padding:1.5rem 1.25rem 3rem}.hero{text-align:center;padding:1.5rem 0 2rem}.hero-badges{display:flex;align-items:center;justify-content:center;gap:0.5rem;margin-bottom:1rem;flex-wrap:wrap}.badge{display:inline-flex;align-items:center;gap:0.35rem;padding:0.25rem 0.75rem;font-size:0.75rem;font-weight:600;border-radius:9999px;background:var(--primary-light);color:var(--primary);text-transform:uppercase;letter-spacing:0.04em}.badge.accent{background:var(--accent-light);color:var(--accent)}.badge.success{background:var(--success-light);color:var(--success)}.hero-title{font-family:var(--font-head);font-size:2.5rem;font-weight:800;line-height:1.2;color:var(--text);margin-bottom:0.75rem}.hero-title span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-desc{font-size:1.1rem;color:var(--text-muted);max-width:780px;margin:0 auto 1.5rem}.app-container{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:1.5rem;margin-bottom:2.5rem}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-bottom:1.25rem;border-bottom:1px solid var(--border);margin-bottom:1.5rem}.tool-modes{display:flex;background:var(--bg-card-alt);padding:0.3rem;border-radius:8px;border:1px solid var(--border)}.mode-btn{padding:0.5rem 1.25rem;border:none;background:transparent;color:var(--text-muted);font-weight:600;font-size:0.9rem;border-radius:6px;cursor:pointer;transition:all 0.2s}.mode-btn.active{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm)}.tool-options{display:flex;align-items:center;gap:0.75rem;flex-wrap:wrap}.select-group{display:flex;align-items:center;gap:0.4rem;font-size:0.85rem;color:var(--text-muted);font-weight:500}.custom-select{background:var(--bg-card-alt);border:1px solid var(--border);color:var(--text);padding:0.45rem 0.8rem;border-radius:6px;font-size:0.85rem;cursor:pointer;outline:none}.custom-select:focus{border-color:var(--border-focus)}.checkbox-label{display:inline-flex;align-items:center;gap:0.4rem;font-size:0.85rem;color:var(--text);cursor:pointer;user-select:none}.checkbox-label input[type="checkbox"]{cursor:pointer;accent-color:var(--primary);width:16px;height:16px}.quick-actions{display:flex;align-items:center;gap:0.5rem;flex-wrap:wrap}.btn-outline{padding:0.45rem 0.85rem;background:transparent;border:1px solid var(--border);color:var(--text);border-radius:6px;font-size:0.85rem;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:0.35rem;transition:all 0.15s}.btn-outline:hover{background:var(--bg-card-alt);border-color:var(--border-focus);color:var(--primary)}.workspace{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.5rem}.editor-panel{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-input);overflow:hidden}.editor-header{display:flex;align-items:center;justify-content:space-between;padding:0.6rem 1rem;background:var(--bg-card-alt);border-bottom:1px solid var(--border);font-size:0.85rem}.editor-title{font-weight:700;color:var(--text);display:flex;align-items:center;gap:0.5rem}.editor-stats{display:flex;align-items:center;gap:0.75rem;color:var(--text-muted);font-size:0.75rem}.stat-pill{padding:0.15rem 0.45rem;background:var(--bg-card);border:1px solid var(--border);border-radius:4px;font-family:monospace}.validation-bar{padding:0.4rem 1rem;font-size:0.8rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);transition:all 0.2s}.validation-bar.valid{background:var(--success-light);color:var(--success);border-color:var(--success)}.validation-bar.error{background:var(--danger-light);color:var(--danger);border-color:var(--danger)}.validation-bar.idle{background:var(--bg-card-alt);color:var(--text-muted)}.editor-body{position:relative;flex:1;min-height:340px;display:flex}.code-area{width:100%;height:100%;min-height:340px;border:none;resize:vertical;padding:1rem;font-family:'Courier New',Courier,monospace;font-size:0.9rem;line-height:1.5;background:transparent;color:var(--text);outline:none;white-space:pre;tab-size:2}.code-area::placeholder{color:var(--text-muted);opacity:0.6}.editor-footer{padding:0.5rem 1rem;background:var(--bg-card-alt);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:0.5rem;flex-wrap:wrap}.file-upload-btn{position:relative;overflow:hidden;cursor:pointer}.file-upload-btn input[type="file"]{position:absolute;left:0;top:0;opacity:0;cursor:pointer;width:100%;height:100%}.actions-bar{display:flex;align-items:center;justify-content:center;gap:1rem;margin:1.5rem 0;flex-wrap:wrap}.btn-primary{padding:0.75rem 2rem;background:var(--primary);color:#fff;border:none;border-radius:8px;font-weight:700;font-size:1rem;cursor:pointer;display:inline-flex;align-items:center;gap:0.6rem;box-shadow:0 4px 10px rgba(37,99,235,0.3);transition:all 0.2s}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.btn-primary:disabled{background:var(--text-muted);cursor:not-allowed;transform:none;box-shadow:none;opacity:0.7}.spinner{width:16px;height:16px;border:2px solid #ffffff;border-top-color:transparent;border-radius:50%;animation:spin 0.6s linear infinite;display:none}.btn-primary.loading .spinner{display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.toast{position:fixed;bottom:2rem;right:2rem;background:var(--text);color:var(--bg);padding:0.75rem 1.25rem;border-radius:8px;font-size:0.9rem;font-weight:600;box-shadow:var(--shadow-lg);transform:translateY(150%);transition:transform 0.3s cubic-bezier(0.16,1,0.3,1);z-index:9999}.toast.show{transform:translateY(0)}.section-title{font-family:var(--font-head);font-size:1.85rem;font-weight:800;color:var(--text);margin-bottom:0.75rem;text-align:center}.section-subtitle{text-align:center;color:var(--text-muted);max-width:700px;margin:0 auto 2rem;font-size:1rem}.tools-grid-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;margin-bottom:3rem}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0.75rem}.tool-card{background:var(--bg-card-alt);border:1px solid var(--border);padding:0.85rem 1rem;border-radius:8px;display:flex;align-items:center;gap:0.6rem;color:var(--text);font-weight:600;font-size:0.9rem;transition:all 0.2s}.tool-card:hover{border-color:var(--border-focus);background:var(--bg-card);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.tool-card svg{width:18px;height:18px;color:var(--primary);flex-shrink:0}.seo-narrative{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;margin-bottom:3rem;line-height:1.8}.seo-narrative h2{font-family:var(--font-head);font-size:1.5rem;color:var(--text);margin-bottom:1rem}.seo-narrative p{color:var(--text);font-size:1.02rem;margin-bottom:1rem}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:3rem}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:all 0.2s;box-shadow:var(--shadow-sm)}.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--border-focus)}.feature-icon{width:46px;height:46px;border-radius:10px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:1rem}.feature-icon svg{width:24px;height:24px}.feature-title{font-family:var(--font-head);font-size:1.15rem;font-weight:700;color:var(--text);margin-bottom:0.5rem}.feature-desc{color:var(--text-muted);font-size:0.9rem;line-height:1.6}.workflow-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;margin-bottom:3rem}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem}.step-card{position:relative;background:var(--bg-card-alt);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}.step-number{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:1rem;margin-bottom:1rem}.step-title{font-family:var(--font-head);font-weight:700;font-size:1.05rem;color:var(--text);margin-bottom:0.4rem}.step-desc{color:var(--text-muted);font-size:0.85rem;line-height:1.5}.entity-table-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;margin-bottom:3rem;overflow-x:auto}.entity-table{width:100%;border-collapse:collapse;text-align:left;font-size:0.9rem}.entity-table th{background:var(--bg-card-alt);padding:0.75rem 1rem;border-bottom:2px solid var(--border);font-weight:700;color:var(--text)}.entity-table td{padding:0.75rem 1rem;border-bottom:1px solid var(--border);color:var(--text)}.entity-table code{background:var(--bg-card-alt);padding:0.2rem 0.4rem;border-radius:4px;font-family:monospace;font-size:0.85rem;color:var(--primary)}.faq-section{margin-bottom:3rem}.faq-accordion{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:0.75rem}.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.faq-question{width:100%;text-align:left;background:transparent;border:none;padding:1.25rem 1.5rem;font-family:var(--font-head);font-size:1.05rem;font-weight:700;color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:1rem}.faq-icon{width:20px;height:20px;transition:transform 0.2s;flex-shrink:0;color:var(--primary)}.faq-item.open .faq-icon{transform:rotate(180deg)}.faq-answer{padding:0 1.5rem 1.25rem;color:var(--text-muted);font-size:0.95rem;line-height:1.7;display:none}.faq-item.open .faq-answer{display:block}.cta-section{background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:var(--radius);padding:3rem 2rem;text-align:center;color:#fff;margin-bottom:3rem;box-shadow:var(--shadow-lg)}.cta-title{font-family:var(--font-head);font-size:2.2rem;font-weight:800;margin-bottom:0.75rem}.cta-desc{font-size:1.1rem;opacity:0.95;max-width:640px;margin:0 auto 1.75rem}.cta-buttons{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap}.btn-cta{padding:0.85rem 1.75rem;border-radius:8px;font-weight:700;font-size:1rem;text-decoration:none;transition:all 0.2s;display:inline-flex;align-items:center;gap:0.5rem}.btn-cta-primary{background:#fff;color:var(--primary);box-shadow:0 4px 6px rgba(0,0,0,0.15)}.btn-cta-primary:hover{background:#f8fafc;color:var(--primary-hover);transform:translateY(-2px)}.btn-cta-secondary{background:rgba(255,255,255,0.15);color:#fff;border:1px solid rgba(255,255,255,0.4);backdrop-filter:blur(4px)}.btn-cta-secondary:hover{background:rgba(255,255,255,0.25);transform:translateY(-2px);color:#fff}.site-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:3rem 1.25rem 1.5rem;font-size:0.875rem;color:var(--text-muted)}.footer-container{max-width:1280px;margin:0 auto}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:2.5rem}.footer-column h3{font-family:var(--font-head);font-size:1rem;font-weight:700;color:var(--text);margin-bottom:1rem}.footer-links{list-style:none;display:flex;flex-direction:column;gap:0.5rem}.footer-links a{color:var(--text-muted);transition:color 0.15s}.footer-links a:hover{color:var(--primary)}.trademark-disclaimer{background:var(--bg-card-alt);border:1px solid var(--border);border-radius:8px;padding:1rem;margin-bottom:2rem;font-size:0.8rem;line-height:1.6;color:var(--text-muted)}.footer-bottom{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--border);padding-top:1.5rem;flex-wrap:wrap;gap:1rem}.copyright{font-weight:500}.footer-bottom-links{display:flex;gap:1.25rem;list-style:none}.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:var(--bg-card);border-top:1px solid var(--border);padding:1rem 1.25rem;box-shadow:var(--shadow-lg);z-index:9998;display:none}.cookie-container{max-width:1280px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap}.cookie-text{font-size:0.875rem;color:var(--text);max-width:800px;line-height:1.5}.cookie-actions{display:flex;gap:0.75rem;flex-shrink:0}.btn-cookie{padding:0.45rem 1.1rem;border-radius:6px;font-size:0.85rem;font-weight:600;cursor:pointer;border:none;transition:all 0.15s}.btn-cookie-accept{background:var(--primary);color:#fff}.btn-cookie-accept:hover{background:var(--primary-hover)}.btn-cookie-dismiss{background:var(--bg-card-alt);color:var(--text);border:1px solid var(--border)}.btn-cookie-dismiss:hover{background:var(--border)}@media(max-width:992px){.workspace{grid-template-columns:1fr}.nav-menu{display:none}.mobile-toggle{display:flex}.nav-menu.mobile-open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--bg-card);border-bottom:1px solid var(--border);padding:1.5rem;box-shadow:var(--shadow-lg);gap:1rem}.dropdown-menu{position:static;transform:none;min-width:auto;box-shadow:none;border:none;padding:0.5rem 0}.dropdown-grid{grid-template-columns:1fr 1fr}}@media(max-width:640px){.hero-title{font-size:1.85rem}.toolbar{flex-direction:column;align-items:stretch}.tool-options{flex-direction:column;align-items:stretch}.quick-actions{justify-content:center}.dropdown-grid{grid-template-columns:1fr}.cta-title{font-size:1.6rem}.cookie-container{flex-direction:column;align-items:stretch}.cookie-actions{justify-content:flex-end}}