:root{--bg:#0b0f19;--bg-card:#111827;--bg-card-hover:#1a2236;--bg-input:#1f293d;--border:#283548;--border-focus:#6366f1;--text:#f3f4f6;--text-muted:#9ca3af;--primary:#6366f1;--primary-hover:#4f46e5;--accent:linear-gradient(135deg,#f43f5e,#ec4899,#8b5cf6,#3b82f6,#10b981,#eab308);--shadow:0 10px 25px -5px rgba(0,0,0,0.5),0 8px 10px -6px rgba(0,0,0,0.4);--radius:12px;--radius-sm:8px}html[data-theme="light"]{--bg:#f8fafc;--bg-card:#ffffff;--bg-card-hover:#f1f5f9;--bg-input:#e2e8f0;--border:#cbd5e1;--border-focus:#4f46e5;--text:#0f172a;--text-muted:#64748b;--primary:#4f46e5;--primary-hover:#4338ca;--shadow:0 10px 25px -5px rgba(0,0,0,0.08),0 8px 10px -6px rgba(0,0,0,0.04)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:'Inter',sans-serif;background-color:var(--bg);color:var(--text);line-height:1.55;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-family:'Outfit',sans-serif;line-height:1.25;color:var(--text)}a{color:inherit;text-decoration:none;transition:color .2s ease}img{max-width:100%;height:auto;display:block}button,input,select{font-family:inherit;font-size:inherit}button{cursor:pointer;border:none;background:none;outline:none}.container{width:100%;max-width:1240px;margin:0 auto;padding:0 16px}.navbar{position:sticky;top:0;z-index:100;background:rgba(11,15,25,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}html[data-theme="light"] .navbar{background:rgba(255,255,255,.88)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:12px}.logo{display:flex;align-items:center;gap:10px;font-family:'Outfit',sans-serif;font-weight:700;font-size:1.25rem}.logo-icon{width:34px;height:34px;border-radius:10px;background:var(--accent);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 0 16px rgba(139,92,246,.5);flex-shrink:0}.logo span{background:linear-gradient(135deg,#f43f5e,#ec4899,#8b5cf6,#3b82f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.nav-links{display:flex;align-items:center;gap:8px;list-style:none}.nav-item{position:relative}.nav-btn{padding:8px 14px;border-radius:var(--radius-sm);font-weight:500;font-size:.92rem;color:var(--text);display:flex;align-items:center;gap:6px;transition:background .2s,color 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ease}.dropdown-link:hover{background:var(--bg-input);color:var(--primary);transform:translateX(2px)}.nav-actions{display:flex;align-items:center;gap:10px}.theme-toggle{width:40px;height:40px;border-radius:10px;background:var(--bg-card);border:1px solid var(--border);color:var(--text);display:flex;align-items:center;justify-content:center;transition:all .2s ease}.theme-toggle:hover{border-color:var(--primary);color:var(--primary);transform:scale(1.05)}.mobile-toggle{display:none;width:40px;height:40px;border-radius:10px;background:var(--bg-card);border:1px solid var(--border);color:var(--text);align-items:center;justify-content:center}.breadcrumb{padding:14px 0 6px;display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-muted);overflow-x:auto;white-space:nowrap}.breadcrumb a{color:var(--text-muted);display:inline-flex;align-items:center;gap:4px}.breadcrumb a:hover{color:var(--primary)}.breadcrumb-separator{color:var(--border);font-size:.75rem}.breadcrumb-current{color:var(--text);font-weight:600}.hero{padding:28px 0 20px;text-align:center}.badge-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.3);font-size:.82rem;font-weight:600;color:var(--primary);margin-bottom:14px}.badge-spark{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.3);opacity:.6}}.hero h1{font-size:clamp(1.8rem,4vw,2.75rem);font-weight:800;letter-spacing:-.02em;margin-bottom:12px;background:linear-gradient(135deg,var(--text) 50%,var(--text-muted));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:1.05rem;color:var(--text-muted);max-width:720px;margin:0 auto 20px}.app-grid{display:grid;grid-template-columns:360px 1fr;gap:20px;margin-bottom:40px;align-items:start}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.controls-panel{display:flex;flex-direction:column;gap:16px;max-height:calc(100vh - 100px);overflow-y:auto;position:sticky;top:84px}.controls-panel::-webkit-scrollbar{width:5px}.controls-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.panel-header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding-bottom:12px}.panel-title{font-size:1.05rem;font-weight:700;display:flex;align-items:center;gap:8px}.badge-count{font-size:.72rem;background:var(--bg-input);padding:3px 8px;border-radius:999px;color:var(--text-muted)}.upload-dropzone{border:2px dashed var(--border);border-radius:var(--radius-sm);padding:22px 14px;text-align:center;background:var(--bg-input);cursor:pointer;transition:border-color .2s,background 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.15s}.sample-chip:hover{border-color:var(--primary);background:var(--primary);color:#fff}.preset-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.preset-btn{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:var(--radius-sm);background:var(--bg-input);border:1px solid var(--border);color:var(--text);font-size:.8rem;font-weight:500;text-align:left;transition:all .15s}.preset-btn:hover,.preset-btn.active{border-color:var(--primary);background:rgba(99,102,241,.12);color:var(--primary)}.preset-dot{width:14px;height:14px;border-radius:50%;flex-shrink:0}.ctrl-group{display:flex;flex-direction:column;gap:12px;border-top:1px solid 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var(--border);border-radius:var(--radius);overflow:hidden;min-height:480px;display:flex;align-items:center;justify-content:center}.canvas-container{position:relative;max-width:100%;max-height:70vh;display:flex;align-items:center;justify-content:center}canvas{max-width:100%;max-height:70vh;height:auto;display:block;border-radius:4px;box-shadow:0 8px 30px rgba(0,0,0,.6)}.compare-handle{position:absolute;top:0;bottom:0;width:3px;background:#fff;box-shadow:0 0 10px rgba(0,0,0,.5);cursor:ew-resize;z-index:20}.compare-thumb{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:32px;height:32px;border-radius:50%;background:#fff;color:#0b0f19;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.4);font-size:.7rem;font-weight:700}.stage-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm)}.toolbar-group{display:flex;align-items:center;gap:8px}.tool-btn{padding:7px 12px;border-radius:var(--radius-sm);background:var(--bg-input);border:1px solid var(--border);color:var(--text);font-size:.82rem;font-weight:500;display:inline-flex;align-items:center;gap:6px;transition:all .15s}.tool-btn:hover{background:var(--bg-card-hover);border-color:var(--primary);color:var(--primary)}.tool-btn:disabled{opacity:.4;cursor:not-allowed}.action-bar{display:flex;gap:12px;align-items:center}.btn-primary{flex:1;padding:14px 20px;border-radius:var(--radius-sm);background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;font-weight:700;font-size:1rem;display:inline-flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 4px 18px rgba(99,102,241,.4);transition:all .2s ease}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 22px 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0}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.tool-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;display:flex;align-items:center;gap:10px;transition:all .2s ease}.tool-card:hover{border-color:var(--primary);background:var(--bg-card-hover);transform:translateY(-2px);box-shadow:var(--shadow)}.tool-card-icon{width:32px;height:32px;border-radius:8px;background:rgba(99,102,241,.12);color:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0}.tool-card-text{font-size:.84rem;font-weight:600;color:var(--text);line-height:1.3}.features-section{margin:40px 0;padding:20px 0}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.feature-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:transform .2s,border-color .2s}.feature-box:hover{transform:translateY(-3px);border-color:var(--primary)}.feature-icon-wrap{width:46px;height:46px;border-radius:12px;background:rgba(99,102,241,.14);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:1.25rem}.feature-box h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}.feature-box p{color:var(--text-muted);font-size:.88rem;line-height:1.5}.how-section{margin:40px 0;padding:30px 0}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}.step-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;position:relative}.step-number{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;font-weight:800;font-size:1rem;display:flex;align-items:center;justify-content:center;margin-bottom:14px}.step-card h3{font-size:1.05rem;font-weight:700;margin-bottom:6px}.step-card p{color:var(--text-muted);font-size:.86rem}.seo-article{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;margin:40px 0;line-height:1.7}.seo-article h2{font-size:1.5rem;font-weight:800;margin-bottom:14px}.seo-article p{color:var(--text-muted);font-size:.94rem;margin-bottom:14px}.seo-article p:last-child{margin-bottom:0}.faq-section{margin:40px 0;padding:20px 0}.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:border-color .2s}.faq-item:hover{border-color:var(--primary)}.faq-q{padding:18px 20px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;font-weight:600;font-size:.95rem;user-select:none}.faq-arrow{transition:transform .2s ease;color:var(--primary)}.faq-item.open .faq-arrow{transform:rotate(180deg)}.faq-a{padding:0 20px 18px;color:var(--text-muted);font-size:.9rem;line-height:1.6;display:none}.faq-item.open .faq-a{display:block}.cta-banner{margin:50px 0;padding:40px 24px;border-radius:var(--radius);background:radial-gradient(ellipse at top,#1e1b4b 0%,#0f172a 100%);border:1px solid rgba(99,102,241,.3);text-align:center;box-shadow:var(--shadow)}.cta-banner h2{font-size:clamp(1.6rem,3.2vw,2.4rem);font-weight:800;margin-bottom:10px;color:#fff}.cta-banner p{color:#cbd5e1;font-size:1rem;max-width:600px;margin:0 auto 24px}.cta-btn-row{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}.cta-link-btn{padding:12px 24px;border-radius:var(--radius-sm);font-weight:700;font-size:.92rem;display:inline-flex;align-items:center;gap:8px;transition:all .2s ease}.cta-primary{background:#6366f1;color:#fff;box-shadow:0 4px 14px rgba(99,102,241,.4)}.cta-primary:hover{background:#4f46e5;transform:translateY(-1px)}.cta-secondary{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#fff}.cta-secondary:hover{background:rgba(255,255,255,.2);transform:translateY(-1px)}.footer{background:#080b12;border-top:1px solid var(--border);padding:50px 0 24px;margin-top:auto;font-size:.85rem;color:var(--text-muted)}html[data-theme="light"] .footer{background:#f1f5f9}.footer-cols{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:30px;margin-bottom:36px}.footer-col h4{font-size:.92rem;font-weight:700;color:var(--text);margin-bottom:14px;text-transform:uppercase;letter-spacing:.05em}.footer-links{list-style:none;display:flex;flex-direction:column;gap:9px}.footer-links a{color:var(--text-muted);transition:color .15s}.footer-links a:hover{color:var(--primary)}.footer-bottom{border-top:1px solid var(--border);padding-top:20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.footer-legal{display:flex;align-items:center;gap:16px}.footer-disclaimer{margin-top:14px;font-size:.76rem;color:var(--text-muted);opacity:.8;line-height:1.5}.cookie-bar{position:fixed;bottom:16px;left:16px;right:16px;max-width:520px;margin:0 auto;background:var(--bg-card);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:var(--radius);padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:14px;z-index:99999}.cookie-bar.hide{display:none}.cookie-text{font-size:.82rem;color:var(--text-muted);line-height:1.4}.cookie-text a{color:var(--primary);text-decoration:underline}.cookie-actions{display:flex;gap:8px;flex-shrink:0}.cookie-btn{padding:7px 14px;border-radius:6px;font-size:.8rem;font-weight:600}.cookie-accept{background:var(--primary);color:#fff}.cookie-dismiss{background:var(--bg-input);border:1px solid var(--border);color:var(--text)}@media(max-width:980px){.app-grid{grid-template-columns:1fr}.controls-panel{position:static;max-height:none}.output-body{grid-template-columns:1fr}.footer-cols{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-card);border-bottom:1px solid var(--border);flex-direction:column;padding:14px;gap:6px}.nav-links.mobile-open{display:flex}.dropdown-menu{position:static;box-shadow:none;border:none;padding:8px 0;width:100%}.mobile-toggle{display:flex}.hero{padding:20px 0 14px}.output-section{padding:18px}.footer-cols{grid-template-columns:1fr}.footer-bottom{flex-direction:column;align-items:flex-start}}