:root{--color-primary: #1d4ed8;--color-accent: #ff4081;--color-text-dark: #333;--color-text-medium: #6b7280;--color-bg-light: #f7f7f7}body{font-family:Inter,sans-serif;line-height:1.6;color:var(--color-text-dark);background-color:var(--color-bg-light);margin:0;min-height:100vh}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.main-heading{font-size:2.5rem;font-weight:700;color:var(--color-text-dark)}.info-text-content{max-width:800px;margin:0 auto;padding:2rem 0}:root{--color-primary: #4f46e5;--color-primary-light: #818cf8;--color-primary-dark: #3730a3;--color-accent: #f97316;--color-accent-light: #fb923c;--color-text-dark: #1f2937;--color-text-medium: #6b7280;--color-text-light: #9ca3af;--color-bg-light: #f9fafb;--color-bg-white: #ffffff;--color-bg-card: #ffffff;--color-success: #10b981;--color-error: #ef4444;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease}.app-container{display:flex;flex-direction:column;min-height:100vh}.app-header{background-color:var(--color-bg-white);padding:1rem 0;border-bottom:1px solid rgba(0,0,0,.06);position:sticky;top:0;z-index:100}.header-content{display:flex;justify-content:space-between;align-items:center;gap:2rem}.logo-group{display:flex;align-items:center;gap:.75rem}.logo-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 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transparent;border-radius:var(--radius-md);font-size:.9375rem;font-weight:600;color:var(--color-text-medium);cursor:pointer;transition:all var(--transition-fast)}.format-btn:hover{background:#e5e7eb}.format-btn.active{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);color:#fff;border-color:var(--color-primary)}.format-icon{font-size:1.125rem}.format-quality{font-size:.75rem;font-weight:500;opacity:.8}.convert-btn{display:flex;align-items:center;justify-content:center;gap:.5rem;width:100%;padding:1.125rem 2rem;background:linear-gradient(135deg,var(--color-accent) 0%,#ea580c 100%);color:#fff;border:none;border-radius:var(--radius-lg);font-size:1.0625rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);box-shadow:0 4px 14px #f9731659}.convert-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px 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1.5rem;line-height:1.6}.converter-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:.75rem}.converter-badge{display:inline-flex;align-items:center;gap:.375rem;background:var(--color-bg-white);border:1px solid #e5e7eb;padding:.375rem .875rem;border-radius:50px;font-size:.8125rem;font-weight:500;color:var(--color-text-medium)}.converter-badge span{color:var(--color-success)}.converter-section{padding:2rem 1rem 3rem;background:var(--color-bg-light)}.converter-features{padding:3rem 1rem;background:var(--color-bg-white);border-top:1px solid rgba(0,0,0,.04)}.converter-features .features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;max-width:900px;margin:0 auto}.feature-item{display:flex;align-items:flex-start;gap:1rem;padding:1.25rem;background:var(--color-bg-light);border-radius:var(--radius-lg)}.feature-item .feature-icon{font-size:1.75rem;flex-shrink:0}.feature-item .feature-content h3{font-size:1rem;font-weight:600;color:var(--color-text-dark);margin-bottom:.25rem}.feature-item .feature-content p{font-size:.875rem;color:var(--color-text-medium);margin:0;line-height:1.5}.format-tabs{display:flex;gap:.5rem;justify-content:center;margin-bottom:1rem}.format-tab{display:flex;align-items:center;gap:.5rem;padding:.625rem 1.25rem;background:var(--color-bg-white);border:2px solid #e5e7eb;border-radius:var(--radius-md);font-size:.9375rem;font-weight:600;color:var(--color-text-medium);cursor:pointer;transition:all var(--transition-fast)}.format-tab:hover{border-color:var(--color-primary-light)}.format-tab.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.tab-icon{font-size:1rem}.quality-options{display:flex;gap:.75rem;justify-content:center;margin-bottom:1rem;flex-wrap:wrap}.quality-btn{display:flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;background:var(--color-bg-white);border:2px solid #e5e7eb;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.quality-btn:hover{border-color:var(--color-primary);background:#4f46e50d}.quality-icon{font-size:1.125rem}.quality-label{font-size:.9375rem;font-weight:600;color:var(--color-text-dark)}.quality-badge{font-size:.75rem;font-weight:500;color:var(--color-primary);background:#4f46e51a;padding:.125rem .5rem;border-radius:50px}.steps-list{margin-bottom:2rem;padding-left:1.5rem}.steps-list li{margin-bottom:.75rem;line-height:1.7}.related-tools{padding:3rem 1rem;background:var(--color-bg-light)}.related-tools h2{font-size:1.5rem;font-weight:700;color:var(--color-text-dark);text-align:center;margin-bottom:1.5rem}@media (max-width: 768px){.converter-hero{padding:2rem 1rem 1.5rem}.converter-badges{gap:.5rem}.converter-badge{font-size:.75rem;padding:.25rem .625rem}.format-tabs,.quality-options{flex-direction:column}.quality-btn{justify-content:center}.converter-features .features-grid{grid-template-columns:1fr}}.y2mate-hero{text-align:center;margin-bottom:3rem}.y2mate-hero h1{font-size:2.5rem;font-weight:700;color:var(--color-primary);margin-bottom:1rem}.y2mate-hero p{font-size:1.2rem;color:var(--color-text-medium);max-width:800px;margin:0 auto}.y2mate-converter-section{background:var(--color-bg-light);padding:2rem;border-radius:var(--radius-lg);margin-bottom:3rem;box-shadow:var(--shadow-md)}.keyword-page-main{flex:1}.keyword-hero{background:linear-gradient(180deg,var(--color-bg-white) 0%,var(--color-bg-light) 100%);padding:3rem 1rem 2rem;text-align:center}.keyword-h1{font-size:clamp(1.75rem,5vw,2.75rem);font-weight:800;color:var(--color-text-dark);margin-bottom:1rem;letter-spacing:-.025em;line-height:1.2}.keyword-subtitle{font-size:1.0625rem;color:var(--color-text-medium);max-width:550px;margin:0 auto 1.5rem;line-height:1.6}.keyword-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:.75rem}.keyword-badge{display:inline-flex;align-items:center;gap:.375rem;background:var(--color-bg-white);border:1px solid #e5e7eb;padding:.375rem .875rem;border-radius:50px;font-size:.8125rem;font-weight:500;color:var(--color-text-medium)}.keyword-badge span{color:var(--color-success)}.keyword-converter{padding:2rem 1rem 3rem;background:var(--color-bg-light)}.keyword-converter-card{background:var(--color-bg-white);border-radius:var(--radius-xl);padding:2rem;max-width:600px;margin:0 auto;box-shadow:var(--shadow-lg)}.keyword-form{display:flex;flex-direction:column;gap:1rem}.keyword-format-tabs{display:flex;gap:.5rem;justify-content:center}.format-tab{display:flex;align-items:center;gap:.5rem;padding:.625rem 1.25rem;background:var(--color-bg-light);border:2px solid transparent;border-radius:var(--radius-md);font-size:.9375rem;font-weight:600;color:var(--color-text-medium);cursor:pointer;transition:all var(--transition-fast)}.format-tab:hover{background:#e5e7eb}.format-tab.active{background:var(--color-primary);color:#fff}.keyword-convert-btn{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:1rem 2rem;background:linear-gradient(135deg,var(--color-accent) 0%,#ea580c 100%);color:#fff;border:none;border-radius:var(--radius-lg);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);box-shadow:0 4px 14px #f9731659}.keyword-convert-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #f9731666}.keyword-convert-btn:disabled{opacity:.7;cursor:not-allowed}.keyword-intro{padding:3rem 1rem;background:var(--color-bg-white)}.keyword-content{max-width:780px;margin:0 auto}.intro-text{font-size:1.0625rem;color:var(--color-text-medium);line-height:1.8;margin:0}.keyword-feature{padding:2rem 1rem;background:var(--color-bg-light)}.keyword-feature-card{max-width:780px;margin:0 auto;background:var(--color-bg-white);border-radius:var(--radius-xl);padding:2rem;box-shadow:var(--shadow-sm)}.keyword-feature-card h2{font-size:1.375rem;font-weight:700;color:var(--color-text-dark);margin-bottom:1rem}.keyword-feature-card p{font-size:1rem;color:var(--color-text-medium);line-height:1.75;margin:0}.keyword-steps{padding:3rem 1rem;background:var(--color-bg-white)}.keyword-steps h2{font-size:1.5rem;font-weight:700;color:var(--color-text-dark);text-align:center;margin-bottom:2rem}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;max-width:800px;margin:0 auto}.step-item{display:flex;align-items:center;gap:1rem;padding:1.25rem;background:var(--color-bg-light);border-radius:var(--radius-lg)}.step-number{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--color-primary);color:#fff;font-weight:700;border-radius:50%;flex-shrink:0}.step-text{font-size:.9375rem;font-weight:500;color:var(--color-text-dark)}.keyword-benefits{padding:3rem 1rem;background:var(--color-bg-light)}.keyword-benefits h2{font-size:1.5rem;font-weight:700;color:var(--color-text-dark);text-align:center;margin-bottom:2rem}.benefits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;max-width:1000px;margin:0 auto}.benefit-item{background:var(--color-bg-white);padding:1.5rem;border-radius:var(--radius-lg);text-align:center}.benefit-icon{font-size:2rem;display:block;margin-bottom:.75rem}.benefit-item h3{font-size:1rem;font-weight:600;color:var(--color-text-dark);margin-bottom:.5rem}.benefit-item p{font-size:.875rem;color:var(--color-text-medium);margin:0;line-height:1.5}.keyword-formats{padding:3rem 1rem;background:var(--color-bg-white)}.keyword-formats h2{font-size:1.5rem;font-weight:700;color:var(--color-text-dark);text-align:center;margin-bottom:2rem}.formats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;max-width:500px;margin:0 auto}.format-card{background:var(--color-bg-light);padding:1.5rem;border-radius:var(--radius-lg);text-align:center}.format-card .format-icon{font-size:2rem;display:block;margin-bottom:.5rem}.format-card h3{font-size:1rem;font-weight:600;color:var(--color-text-dark);margin-bottom:.25rem}.format-card p{font-size:.8125rem;color:var(--color-text-medium);margin:0}.keyword-faq{padding:3rem 1rem;background:var(--color-bg-light)}.keyword-faq h2{font-size:1.5rem;font-weight:700;color:var(--color-text-dark);text-align:center;margin-bottom:2rem}.faq-list{max-width:780px;margin:0 auto}.faq-item{background:var(--color-bg-white);padding:1.5rem;border-radius:var(--radius-lg);margin-bottom:1rem}.faq-item h3{font-size:1rem;font-weight:600;color:var(--color-text-dark);margin-bottom:.5rem}.faq-item p{font-size:.9375rem;color:var(--color-text-medium);margin:0;line-height:1.6}.keyword-links{padding:3rem 1rem;background:var(--color-bg-white)}.keyword-links h2{font-size:1.5rem;font-weight:700;color:var(--color-text-dark);text-align:center;margin-bottom:1.5rem}.links-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;max-width:700px;margin:0 auto}.links-grid .tool-card{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:1.25rem;background:var(--color-bg-light);border:2px solid #e5e7eb;border-radius:var(--radius-lg);font-weight:600;color:var(--color-text-dark);text-decoration:none;transition:all var(--transition-fast)}.links-grid .tool-card:hover{border-color:var(--color-primary);transform:translateY(-2px)}@media (max-width: 768px){.keyword-h1{font-size:1.75rem}.keyword-converter-card{padding:1.5rem 1.25rem}.keyword-format-tabs{flex-direction:column}.steps-grid,.benefits-grid{grid-template-columns:1fr}}.footer-seo-links{margin-top:2rem;padding-top:1.5rem;border-top:1px solid rgba(0,0,0,.06)}.footer-seo-links h4{font-size:.875rem;font-weight:600;color:var(--color-text-dark);margin-bottom:1rem;text-align:center}.seo-links-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 1.5rem;max-width:800px;margin:0 auto 1.5rem}.seo-link{font-size:.8125rem;color:var(--color-text-medium);text-decoration:none;transition:color var(--transition-fast)}.seo-link:hover{color:var(--color-primary);text-decoration:none}@media (max-width: 768px){.footer-seo-links h4{font-size:.8125rem}.seo-links-grid{gap:.5rem 1rem}.seo-link{font-size:.75rem}}