:root{--bg:#0a0e1a;--bg-card:#111827;--bg-card-hover:#172238;--bg-input:#0a0e1a;--border:#1f293d;--border-focus:#3b82f6;--text:#f8fafc;--text-muted:#94a3b8;--primary:#3b82f6;--primary-hover:#2563eb;--primary-light:rgba(59,130,246,0.12);--accent:#8b5cf6;--success:#10b981;--success-bg:rgba(16,185,129,0.12);--warning:#f59e0b;--warning-bg:rgba(245,158,11,0.12);--danger:#ef4444;--danger-bg:rgba(239,68,68,0.12);--header-bg:rgba(10,14,26,0.85);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:9999px;--shadow-sm:0 1px 2px rgba(0,0,0,0.2);--shadow-md:0 4px 14px rgba(0,0,0,0.3);--shadow-lg:0 12px 30px rgba(0,0,0,0.45);--transition:all .2s cubic-bezier(0.4,0,0.2,1)}[data-theme="light"]{--bg:#f8fafc;--bg-card:#ffffff;--bg-card-hover:#f1f5f9;--bg-input:#f8fafc;--border:#e2e8f0;--border-focus:#2563eb;--text:#0f172a;--text-muted:#64748b;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:rgba(37,99,235,0.08);--accent:#7c3aed;--success:#059669;--success-bg:rgba(5,150,105,0.08);--warning:#d97706;--warning-bg:rgba(217,119,6,0.08);--danger:#dc2626;--danger-bg:rgba(220,38,38,0.08);--header-bg:rgba(255,255,255,0.88);--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 4px 14px rgba(0,0,0,0.08);--shadow-lg:0 12px 30px rgba(0,0,0,0.12)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background-color:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;transition:background-color .3s ease,color .3s ease}h1,h2,h3,h4,h5,h6{font-family:'Outfit',sans-serif;font-weight:700;color:var(--text);line-height:1.25}a{color:var(--primary);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary-hover)}button,input,select,textarea{font-family:inherit;font-size:100%}img{max-width:100%;height:auto;display:block}.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}.site-header{position:sticky;top:0;z-index:1000;background:var(--header-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:var(--transition)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}.brand{display:flex;align-items:center;gap:12px;font-family:'Outfit',sans-serif;font-weight:800;font-size:1.35rem;color:var(--text);text-decoration:none}.brand-icon{width:38px;height:38px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.15rem;box-shadow:0 4px 12px rgba(59,130,246,0.35)}.brand-name span{color:var(--primary)}.nav-menu{display:flex;align-items:center;gap:24px;list-style:none}.nav-item{position:relative}.nav-link{font-size:.925rem;font-weight:500;color:var(--text-muted);display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition)}.nav-link:hover,.nav-link.active{color:var(--text);background:var(--primary-light)}.nav-link .arrow{font-size:.7rem;transition:transform .2s ease}.nav-item:hover .arrow{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:100%;left:0;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:16px;min-width:540px;display:none;grid-template-columns:repeat(2,1fr);gap:8px;z-index:1100}.dropdown-menu.url-tools-menu{min-width:620px;grid-template-columns:repeat(2,1fr)}.nav-item:hover .dropdown-menu{display:grid}.dropdown-link{display:flex;align-items:flex-start;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--text);font-size:.875rem;transition:var(--transition)}.dropdown-link:hover{background:var(--primary-light);color:var(--primary)}.dropdown-link-icon{color:var(--primary);font-size:1.05rem;margin-top:2px}.dropdown-link-text{font-weight:600;display:block}.dropdown-link-desc{font-size:.75rem;color:var(--text-muted);display:block;margin-top:2px;line-height:1.3}.header-actions{display:flex;align-items:center;gap:12px}.theme-toggle-btn{width:40px;height:40px;border-radius:var(--radius-md);border:1px solid var(--border);background:var(--bg-card);color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.1rem;transition:var(--transition)}.theme-toggle-btn:hover{border-color:var(--border-focus);background:var(--primary-light);color:var(--primary)}.nav-toggle{display:none;width:40px;height:40px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text);font-size:1.25rem;cursor:pointer;align-items:center;justify-content:center}.breadcrumb-nav{padding:14px 0;background:transparent;border-bottom:1px solid var(--border)}.breadcrumb-list{display:flex;align-items:center;flex-wrap:wrap;gap:8px;list-style:none;font-size:.85rem;color:var(--text-muted)}.breadcrumb-item{display:flex;align-items:center;gap:8px}.breadcrumb-item a{color:var(--text-muted)}.breadcrumb-item a:hover{color:var(--primary)}.breadcrumb-separator{font-size:.75rem;color:var(--text-muted)}.breadcrumb-current{color:var(--text);font-weight:600}.hero-section{padding:50px 0 35px;position:relative;overflow:hidden}.hero-badge-wrap{text-align:center;margin-bottom:16px}.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:var(--primary-light);border:1px solid rgba(59,130,246,0.3);border-radius:var(--radius-full);color:var(--primary);font-size:.825rem;font-weight:600;letter-spacing:.3px}.hero-badge i{font-size:.8rem}.hero-title{font-size:2.75rem;text-align:center;margin-bottom:16px;letter-spacing:-.02em;background:linear-gradient(135deg,var(--text) 40%,var(--primary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:1.125rem;color:var(--text-muted);text-align:center;max-width:760px;margin:0 auto 36px;line-height:1.6}.tool-wrapper{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}.tool-tabs{display:flex;background:rgba(0,0,0,0.15);border-bottom:1px solid var(--border);overflow-x:auto;-webkit-overflow-scrolling:touch}.tab-btn{flex:1;min-width:180px;padding:16px 20px;background:transparent;border:none;border-bottom:3px solid transparent;color:var(--text-muted);font-size:.95rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;transition:var(--transition);white-space:nowrap}.tab-btn:hover{color:var(--text);background:var(--primary-light)}.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary);background:var(--bg-card)}.tab-content{display:none;padding:32px}.tab-content.active{display:block}.form-group{margin-bottom:20px}.form-group label{display:flex;align-items:center;justify-content:space-between;font-size:.875rem;font-weight:600;margin-bottom:8px;color:var(--text)}.form-group label .hint{font-size:.775rem;font-weight:400;color:var(--text-muted)}.input-with-action{display:flex;position:relative}.input-with-action input{flex:1;border-top-right-radius:0;border-bottom-right-radius:0}.btn-input-addon{padding:0 18px;background:var(--primary);color:#fff;border:1px solid var(--primary);border-top-right-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md);font-weight:600;font-size:.85rem;cursor:pointer;display:flex;align-items:center;gap:6px;transition:var(--transition);white-space:nowrap}.btn-input-addon:hover{background:var(--primary-hover);border-color:var(--primary-hover)}.form-control{width:100%;padding:13px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text);font-size:.925rem;outline:none;transition:var(--transition)}.form-control:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--primary-light)}.form-control.is-valid{border-color:var(--success)}.form-control.is-invalid{border-color:var(--danger)}.validation-feedback{font-size:.8rem;margin-top:6px;display:none}.validation-feedback.show{display:flex;align-items:center;gap:6px}.validation-feedback.error{color:var(--danger)}.validation-feedback.success{color:var(--success)}.mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;margin-bottom:24px}.mode-card{position:relative;border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;cursor:pointer;transition:var(--transition);background:var(--bg-input);display:flex;flex-direction:column}.mode-card:hover{border-color:var(--border-focus);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.mode-card.selected{border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 0 2px var(--primary)}.mode-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.mode-title{font-weight:700;font-size:.95rem;color:var(--text);display:flex;align-items:center;gap:8px}.mode-title i{color:var(--primary)}.mode-tag{font-size:.675rem;padding:2px 8px;border-radius:var(--radius-full);background:var(--border);color:var(--text-muted);font-weight:600}.mode-card.selected .mode-tag{background:var(--primary);color:#fff}.mode-desc{font-size:.8rem;color:var(--text-muted);line-height:1.4}.advanced-accordion{border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:24px;overflow:hidden}.accordion-header{padding:14px 18px;background:var(--bg-input);display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-weight:600;font-size:.925rem;color:var(--text)}.accordion-header i{transition:transform .2s ease}.accordion-header.open i{transform:rotate(180deg)}.accordion-body{display:none;padding:20px;border-top:1px solid var(--border);background:var(--bg-card)}.accordion-body.open{display:block}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.action-btn-row{display:flex;align-items:center;gap:12px;margin-top:10px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:var(--radius-md);font-size:.925rem;font-weight:600;cursor:pointer;border:none;transition:var(--transition);text-decoration:none}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 4px 14px rgba(59,130,246,0.35)}.btn-primary:hover{opacity:.95;transform:translateY(-1px);color:#fff}.btn-secondary{background:var(--bg-input);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--border-focus);background:var(--primary-light)}.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}.btn-outline:hover{background:var(--primary-light)}.result-panel{margin-top:30px;padding:24px;border-radius:var(--radius-md);background:var(--bg-input);border:1px solid var(--border);display:none}.result-panel.show{display:block;animation:fadeIn .3s ease}@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.result-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.result-title{font-size:1.1rem;font-weight:700;display:flex;align-items:center;gap:8px;color:var(--text)}.result-title i{color:var(--success)}.masked-url-box{display:flex;align-items:center;gap:10px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:8px 12px;margin-bottom:20px}.masked-url-text{flex:1;font-family:monospace;font-size:.9rem;color:var(--primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;user-select:all}.qr-and-exports{display:grid;grid-template-columns:180px 1fr;gap:24px;align-items:start}.qr-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:14px;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center}.qr-canvas-wrap{width:140px;height:140px;background:#fff;padding:8px;border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}.qr-canvas-wrap canvas,.qr-canvas-wrap img{width:100%;height:100%}.qr-actions{display:flex;gap:6px;width:100%}.qr-actions button{flex:1;padding:6px;font-size:.75rem;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-input);color:var(--text);cursor:pointer}.export-options{display:flex;flex-direction:column;gap:12px}.export-tabs{display:flex;gap:8px;border-bottom:1px solid var(--border);padding-bottom:8px;overflow-x:auto}.export-tab-btn{padding:6px 12px;background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);font-size:.8rem;font-weight:600;cursor:pointer;transition:var(--transition);white-space:nowrap}.export-tab-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.code-preview-wrap{position:relative;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;overflow-x:auto}.code-preview{font-family:monospace;font-size:.8rem;line-height:1.5;color:var(--text);white-space:pre-wrap;word-break:break-all}.code-copy-btn{position:absolute;top:8px;right:8px;padding:4px 10px;font-size:.75rem;border-radius:var(--radius-sm);background:var(--bg-input);border:1px solid var(--border);color:var(--text);cursor:pointer}.code-download-btn{display:inline-flex;align-items:center;gap:6px;margin-top:10px;padding:8px 14px;font-size:.825rem;border-radius:var(--radius-sm);background:var(--primary-light);border:1px solid var(--primary);color:var(--primary);font-weight:600;cursor:pointer;align-self:flex-start}.inspector-results{margin-top:24px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-input);padding:20px;display:none}.inspector-results.show{display:block}.inspector-metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-bottom:18px}.inspector-metric{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px}.inspector-metric-label{font-size:.775rem;color:var(--text-muted);margin-bottom:4px}.inspector-metric-value{font-size:1.15rem;font-weight:700;color:var(--text)}.iframe-status-alert{padding:14px 16px;border-radius:var(--radius-md);display:flex;align-items:flex-start;gap:12px;margin-bottom:18px;font-size:.875rem}.iframe-status-alert.allowed{background:var(--success-bg);border:1px solid var(--success);color:var(--success)}.iframe-status-alert.blocked{background:var(--danger-bg);border:1px solid var(--danger);color:var(--danger)}.device-viewport-controls{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:20px}.device-btn{padding:8px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:.85rem;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:8px;transition:var(--transition)}.device-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.sandbox-frame-container{display:flex;justify-content:center;overflow:hidden;background:#05070d;border-radius:var(--radius-md);padding:24px 10px;border:1px solid var(--border)}.sandbox-frame-box{width:100%;height:520px;transition:width .3s ease;box-shadow:var(--shadow-lg);border-radius:8px;overflow:hidden;background:#fff}.sandbox-frame-box iframe{width:100%;height:100%;border:none;display:block}.more-tools-section{padding:50px 0;background:rgba(0,0,0,0.08);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section-heading{text-align:center;margin-bottom:36px}.section-title{font-size:2rem;margin-bottom:10px}.section-subtitle{font-size:1rem;color:var(--text-muted);max-width:680px;margin:0 auto}.tools-grid-15{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.tool-item-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:18px 16px;display:flex;flex-direction:column;justify-content:space-between;transition:var(--transition);text-decoration:none;color:var(--text);position:relative;overflow:hidden}.tool-item-card:hover{border-color:var(--border-focus);transform:translateY(-3px);box-shadow:var(--shadow-md);color:var(--text)}.tool-item-card-top{display:flex;align-items:center;gap:10px;margin-bottom:10px}.tool-item-icon{width:36px;height:36px;border-radius:8px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}.tool-item-title{font-size:.9rem;font-weight:700;line-height:1.3}.tool-item-desc{font-size:.775rem;color:var(--text-muted);line-height:1.4;margin-bottom:12px}.tool-item-arrow{font-size:.8rem;color:var(--primary);display:flex;align-items:center;gap:4px;font-weight:600}.features-section{padding:60px 0}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:28px 24px;transition:var(--transition)}.feature-card:hover{border-color:var(--border-focus);transform:translateY(-3px);box-shadow:var(--shadow-md)}.feature-icon{width:52px;height:52px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.35rem;margin-bottom:18px}.feature-title{font-size:1.2rem;margin-bottom:10px}.feature-desc{font-size:.875rem;color:var(--text-muted);line-height:1.6}.how-it-works-section{padding:50px 0;background:rgba(0,0,0,0.05);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}.step-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:30px 24px;position:relative}.step-number{position:absolute;top:20px;right:20px;font-size:2.25rem;font-family:'Outfit',sans-serif;font-weight:800;color:var(--border);line-height:1}.step-icon{width:46px;height:46px;border-radius:10px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.15rem;margin-bottom:16px}.step-title{font-size:1.15rem;margin-bottom:10px}.step-desc{font-size:.875rem;color:var(--text-muted);line-height:1.6}.seo-content-section{padding:60px 0}.seo-article-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-sm)}.seo-article-header{margin-bottom:24px}.seo-article-title{font-size:1.65rem;margin-bottom:8px}.seo-article-meta{font-size:.825rem;color:var(--text-muted);display:flex;align-items:center;gap:12px}.seo-article-body p{font-size:.95rem;color:var(--text);line-height:1.8;margin-bottom:18px}.seo-article-body p:last-child{margin-bottom:0}.faq-section{padding:50px 0;border-top:1px solid var(--border)}.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition)}.faq-question{padding:20px 24px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:1.05rem;font-weight:600;color:var(--text);user-select:none}.faq-question i{font-size:.9rem;color:var(--primary);transition:transform .2s ease}.faq-item.open .faq-question i{transform:rotate(180deg)}.faq-answer{display:none;padding:0 24px 20px;font-size:.925rem;color:var(--text-muted);line-height:1.7;border-top:1px solid transparent}.faq-item.open .faq-answer{display:block}.cta-section{padding:60px 0;background:linear-gradient(135deg,rgba(59,130,246,0.1),rgba(139,92,246,0.1));border-top:1px solid var(--border);border-bottom:1px solid var(--border);text-align:center}.cta-box{max-width:760px;margin:0 auto}.cta-title{font-size:2.25rem;margin-bottom:14px}.cta-desc{font-size:1.05rem;color:var(--text-muted);margin-bottom:28px;line-height:1.6}.cta-buttons{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}.site-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:60px 0 24px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:48px}.footer-col-title{font-size:1rem;font-weight:700;margin-bottom:18px;color:var(--text);display:flex;align-items:center;gap:8px}.footer-col-title i{color:var(--primary)}.footer-links{list-style:none;display:flex;flex-direction:column;gap:10px}.footer-links a{color:var(--text-muted);font-size:.875rem;transition:var(--transition);display:inline-flex;align-items:center;gap:6px}.footer-links a:hover{color:var(--primary);transform:translateX(3px)}.footer-disclaimer-box{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-md);padding:18px 20px;margin-bottom:32px;font-size:.8rem;color:var(--text-muted);line-height:1.6}.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:24px;border-top:1px solid var(--border);flex-wrap:wrap;gap:16px}.footer-copyright{font-size:.85rem;color:var(--text-muted)}.footer-legal-links{display:flex;align-items:center;gap:18px;list-style:none;font-size:.85rem}.footer-legal-links a{color:var(--text-muted)}.footer-legal-links a:hover{color:var(--primary)}.cookie-banner{position:fixed;bottom:20px;left:20px;right:20px;max-width:620px;margin:0 auto;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:18px 22px;box-shadow:var(--shadow-lg);z-index:9999;display:none;align-items:center;justify-content:space-between;gap:18px}.cookie-banner.show{display:flex}.cookie-text{font-size:.85rem;color:var(--text-muted);line-height:1.5}.cookie-text a{color:var(--primary);text-decoration:underline}.cookie-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.cookie-btn{padding:8px 16px;border-radius:var(--radius-sm);font-size:.825rem;font-weight:600;cursor:pointer;border:none}.cookie-btn-accept{background:var(--primary);color:#fff}.cookie-btn-accept:hover{background:var(--primary-hover)}.cookie-btn-dismiss{background:var(--bg-input);color:var(--text);border:1px solid var(--border)}.toast-notification{position:fixed;bottom:24px;right:24px;background:#10b981;color:#fff;padding:12px 20px;border-radius:var(--radius-md);font-size:.875rem;font-weight:600;box-shadow:var(--shadow-lg);display:none;align-items:center;gap:8px;z-index:10000;animation:slideUp .25s ease}@keyframes slideUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@media (max-width:1100px){.tools-grid-15{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:840px){.nav-menu{position:fixed;top:72px;left:0;right:0;background:var(--bg-card);border-bottom:1px solid var(--border);flex-direction:column;padding:20px;display:none;gap:12px;box-shadow:var(--shadow-lg);max-height:calc(100vh - 72px);overflow-y:auto}.nav-menu.open{display:flex}.nav-toggle{display:flex}.dropdown-menu,.dropdown-menu.url-tools-menu{position:static;min-width:100%;box-shadow:none;border:none;background:transparent;padding:6px 0;grid-template-columns:1fr;display:none}.nav-item.open-mobile .dropdown-menu{display:grid}.hero-title{font-size:2rem}.features-grid,.steps-grid{grid-template-columns:1fr}.tools-grid-15{grid-template-columns:repeat(2,1fr)}.grid-2,.grid-3{grid-template-columns:1fr}.qr-and-exports{grid-template-columns:1fr}.cookie-banner{flex-direction:column;align-items:flex-start}}@media (max-width:540px){.tools-grid-15{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.tab-btn{min-width:140px;font-size:.85rem;padding:12px 14px}.tab-content{padding:20px 14px}.action-btn-row{flex-direction:column}.action-btn-row .btn{width:100%}.footer-bottom{flex-direction:column;text-align:center}}