:root{--color-primary:#e8a017;--color-primary-hover:#d4900f;--color-primary-active:#bf8210;--color-primary-tint-4:#e8a0170a;--color-primary-tint-6:#e8a0170f;--color-primary-tint-8:#e8a01714;--color-primary-tint-15:#e8a01726;--color-primary-tint-20:#e8a01733;--color-bg:#fdf8f0;--color-bg-tinted:#fdf5e6;--color-border:#e8e4dc;--color-border-accent:#f0ddb0;--color-footer-bg:#f5efe2;--color-footer-border:#e8dcc8}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--color-bg);color:#1a1a1a;padding:0;font-family:system-ui,-apple-system,sans-serif}.page-wrapper{grid-template-columns:1fr minmax(0,700px) 1fr;gap:24px;min-height:calc(100vh - 120px);padding:40px 20px;display:grid}.container{grid-column:2;min-width:0}.ad-sidebar{justify-content:center;align-self:start;align-items:flex-start;padding-top:60px;display:flex;position:sticky;top:20px}.ad-bottom{background:#f5f5f5;border-top:1px solid #eee;justify-content:center;padding:20px;display:flex}.ad-mobile{margin-top:24px;display:none}@media (max-width:1199px){.page-wrapper{grid-template-columns:1fr;max-width:740px;margin:0 auto}.ad-sidebar{display:none}.ad-mobile{display:block}}@media (max-width:767px){.page-wrapper{padding:24px 16px}.converter-flow{flex-direction:column;gap:8px}.converter-flow .format-group{flex:none;width:100%}.arrow-icon{padding:0;transform:rotate(90deg)}.dropzone{padding:32px 16px}h1{font-size:11px}}.step-section{margin-bottom:24px}.step-header{align-items:center;gap:10px;margin-bottom:12px;display:flex}.step-badge{background:var(--color-primary);color:#fff;border-radius:2px;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;font-size:13px;font-weight:700;display:inline-flex}.step-text{color:#444;font-size:14px;font-weight:600}.loading-bar{background:var(--color-primary-tint-6);border:1px solid var(--color-primary-tint-15);color:var(--color-primary);border-radius:10px;align-items:center;gap:10px;margin-top:16px;padding:14px 16px;font-size:14px;font-weight:500;display:flex}.loading-spinner{border:2.5px solid var(--color-primary-tint-20);border-top-color:var(--color-primary);border-radius:50%;flex-shrink:0;width:18px;height:18px;animation:.6s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.privacy-note{color:#999;text-align:center;margin-top:16px;margin-bottom:8px;font-size:12px}.site-header{align-items:flex-start;gap:16px;margin-bottom:14px;display:flex}.header-mascot{flex-shrink:0}.mascot-img{object-fit:contain;width:80px;height:80px}.header-text{flex:1;min-width:0}.header-text h1{margin-bottom:4px}.site-header .action-buttons{flex-shrink:0}@media (max-width:600px){.site-header{flex-wrap:wrap}.mascot-img{width:56px;height:56px}}.bookmark-wrap{flex-shrink:0;position:relative}.bookmark-btn{color:#666;cursor:pointer;white-space:nowrap;background:#fff;border:1.5px solid #e0e0e0;border-radius:8px;align-items:center;gap:5px;padding:6px 12px;font-size:13px;font-weight:600;transition:all .15s;display:inline-flex}.bookmark-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.bookmark-icon{font-size:16px;line-height:1}.bookmark-tooltip{color:#fff;white-space:nowrap;z-index:10;background:#333;border-radius:8px;padding:8px 12px;font-size:12px;font-weight:500;animation:.15s fadeIn;position:absolute;top:calc(100% + 8px);right:0}.bookmark-tooltip:before{content:"";background:#333;width:10px;height:10px;position:absolute;top:-5px;right:16px;transform:rotate(45deg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@media (max-width:767px){.bookmark-label{display:none}.bookmark-btn{padding:6px 8px}}.action-buttons{flex-shrink:0;gap:6px;display:flex}.share-wrap{position:relative}.share-btn{color:#666;cursor:pointer;white-space:nowrap;background:#fff;border:1.5px solid #e0e0e0;border-radius:8px;align-items:center;gap:5px;padding:6px 12px;font-size:13px;font-weight:600;transition:all .15s;display:inline-flex}.share-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.share-icon{font-size:15px;line-height:1}.share-menu{z-index:20;background:#fff;border:1px solid #e0e0e0;border-radius:10px;min-width:160px;padding:4px;animation:.15s fadeIn;position:absolute;top:calc(100% + 8px);right:0;box-shadow:0 4px 16px #0000001a}.share-menu-item{color:#333;cursor:pointer;background:0 0;border:none;border-radius:7px;align-items:center;gap:10px;width:100%;padding:9px 12px;font-size:13px;font-weight:500;transition:background .1s;display:flex}.share-menu-item:hover{background:var(--color-bg-tinted)}.share-menu-item span:first-child{text-align:center;flex-shrink:0;width:20px;font-size:15px}@media (max-width:767px){.share-label{display:none}.share-btn{padding:6px 8px}}h1{margin-bottom:10px;font-family:"Press Start 2P",system-ui,sans-serif;font-size:18px;line-height:1.5}.sub{color:#888;margin-bottom:24px;font-size:13px}.converter-flow{align-items:center;gap:12px;margin-bottom:0;display:flex}.format-group{flex:1}.format-group label{color:#999;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;font-size:11px;font-weight:600;display:block}.format-options{flex-direction:column;gap:4px;display:flex}.fmt-btn{cursor:pointer;text-align:left;background:#fff;border:2px solid #e0e0e0;border-radius:8px;padding:10px 12px;font-size:13px;font-weight:600;transition:all .15s}.fmt-btn:hover{border-color:#aaa}.fmt-btn.active{border-color:var(--color-primary);background:var(--color-primary-tint-6);color:var(--color-primary-active);border-left-width:4px}.fmt-btn.detected{color:#16a34a;background:#16a34a0f;border-color:#16a34a}.fmt-btn .fmt-label{align-items:center;gap:6px;font-size:14px;display:flex}.fmt-icon{flex-shrink:0;line-height:0;display:inline-flex}.fmt-btn .fmt-desc{color:#999;font-size:11px;font-weight:400}.fmt-btn.active .fmt-desc{color:#c9950d}.fmt-btn.detected .fmt-desc{color:#4ade80}.fmt-btn:disabled{opacity:.35;cursor:not-allowed}.detected-list{flex-direction:column;gap:4px;display:flex}.detected-badge{background:#16a34a0f;border:2px solid #16a34a;border-radius:8px;align-items:center;gap:8px;padding:12px 14px;display:flex}.detected-ext{color:#16a34a;font-size:15px;font-weight:700}.detected-desc{color:#4ade80;font-size:12px}.detected-placeholder{color:#aaa;text-align:center;border:2px dashed #e0e0e0;border-radius:8px;padding:12px 14px;font-size:13px}.arrow-icon{color:#bbb;padding-top:20px;font-size:28px}.dropzone{text-align:center;cursor:pointer;background:#fff;border:2px dashed #ccc;border-radius:8px;padding:44px 20px;transition:all .2s}.dropzone:hover,.dropzone.over{border-style:solid;border-color:var(--color-primary);background:var(--color-primary-tint-4)}.dropzone .icon{margin-bottom:8px;font-size:42px}.dropzone .label{font-size:15px;font-weight:500}.dropzone .hint{color:#999;margin-top:4px;font-size:12px}.error{background:#fef2f2;border:1px solid #fecaca;border-radius:10px;margin-top:16px;padding:14px}.error h3{color:#dc2626;margin-bottom:4px;font-size:14px}.error p{color:#b91c1c;margin-top:2px;font-size:12px}.success{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;margin-top:16px;padding:16px}.success h3{color:#16a34a;margin-bottom:8px;font-size:14px}.grid{grid-template-columns:auto 1fr;gap:5px 14px;font-size:13px;display:grid}.grid .k{color:#666}.warn{color:#92400e;background:#fefce8;border:1px solid #fde68a;border-radius:8px;margin-top:10px;padding:8px 10px;font-size:12px;line-height:1.4}.actions{gap:8px;margin-top:14px;display:flex}.btn{cursor:pointer;border:none;border-radius:8px;padding:10px 18px;font-size:14px;font-weight:600;transition:all .15s}.btn-primary{background:var(--color-primary);color:#fff;box-shadow:3px 3px 0 0 var(--color-primary-active);border-radius:4px;flex:1}.btn-primary:hover{background:var(--color-primary-hover)}.btn-primary:active{box-shadow:1px 1px 0 0 var(--color-primary-active);transform:translate(2px,2px)}.btn-secondary{color:#333;background:#f3f3f3}.btn-secondary:hover{background:#e8e8e8}.btn-reset{color:#c53030;background:#fef2f2;border:1.5px solid #e8a0a0;width:100%}.btn-reset:hover{background:#fde8e8;border-color:#c53030}.btn-copied{color:#fff!important;background:#16a34a!important}.tip{color:#888;background:#f5f5f5;border-radius:8px;margin-top:12px;padding:8px 10px;font-size:12px;line-height:1.5}.tip a{color:var(--color-primary-hover)}.batch{color:#666;margin-top:12px;font-size:12px}.batch .item{padding:3px 0}.batch .ok{color:#16a34a}.batch .fail{color:#dc2626}.breadcrumb{color:#888;margin-bottom:16px;font-size:13px}.breadcrumb a{color:var(--color-primary-hover);text-decoration:none}.breadcrumb a:hover{text-decoration:underline}.breadcrumb span{color:#ccc;margin:0 6px}.content-section{margin-bottom:32px}.content-section h2{color:#1a1a1a;margin-bottom:12px;font-size:18px}.content-section p{color:#444;margin-bottom:10px;font-size:14px;line-height:1.7}.content-section a{color:var(--color-primary-hover);text-decoration:none}.content-section a:hover{text-decoration:underline}.feature-list{margin:12px 0;padding:0;list-style:none}.feature-list li{color:#444;padding:6px 0 6px 20px;font-size:14px;line-height:1.6;position:relative}.feature-list li:before{content:"";background:var(--color-primary);border-radius:50%;width:8px;height:8px;position:absolute;top:13px;left:0}.content-cta{margin-top:32px;margin-bottom:24px}.content-cta .btn{padding:12px 28px;text-decoration:none;display:inline-block}.guide-intro{color:#555;margin-bottom:28px;font-size:15px;line-height:1.7}.steps{flex-direction:column;gap:16px;margin:16px 0;display:flex}.step-item{align-items:flex-start;gap:14px;display:flex}.step-item .step-badge{flex-shrink:0;margin-top:2px}.step-item p{color:#555;margin:4px 0 0;font-size:14px;line-height:1.6}.step-item strong{color:#1a1a1a;font-size:15px}.step-item a{color:var(--color-primary-hover);text-decoration:none}.step-item a:hover{text-decoration:underline}.home-content{border-top:4px double var(--color-border);flex-direction:column;gap:20px;margin-top:40px;padding-top:32px;display:flex}.home-content h2{color:#1a1a1a;letter-spacing:-.01em;margin:0 0 10px;font-size:16px}.home-content p{color:#555;margin-bottom:0;font-size:14px;line-height:1.7}.home-card{border:1px solid var(--color-border);background:#fff;border-radius:12px;padding:22px 24px;transition:box-shadow .2s}.home-card:hover{box-shadow:0 2px 12px var(--color-primary-tint-8)}.how-steps{flex-direction:column;gap:14px;margin:16px 0 18px;display:flex}.how-step{background:var(--color-bg-tinted);border:1px solid var(--color-border-accent);border-radius:10px;align-items:center;gap:14px;padding:12px 16px;display:flex}.how-step strong{color:#1a1a1a;margin-bottom:2px;font-size:14px;display:block}.how-step-desc{color:#888;font-size:13px}.how-step p{margin:0;font-size:14px}.home-privacy{border-top:1px solid var(--color-border-accent);padding-top:12px;font-style:italic;color:#999!important;margin-top:4px!important;font-size:13px!important}.home-links-row{grid-template-columns:1fr 1fr;gap:16px;display:grid}@media (max-width:600px){.home-links-row{grid-template-columns:1fr}}.home-link-card{border:1px solid var(--color-border);background:#fff;border-radius:12px;padding:20px 22px;transition:box-shadow .2s}.home-link-card:hover{box-shadow:0 2px 12px var(--color-primary-tint-8)}.home-link-card h2{border-bottom:2px solid var(--color-primary);margin:0 0 12px;padding-bottom:10px;font-size:15px;display:inline-block}.guide-links{margin:0;padding:0;list-style:none}.guide-links li{border-bottom:1px solid #f5f5f8;padding:6px 0}.guide-links li:last-child{border-bottom:none}.guide-links a,.home-content>p a{color:var(--color-primary-hover);font-size:13px;text-decoration:none;transition:color .15s}.guide-links a:hover,.home-content>p a:hover{color:var(--color-primary-active);text-decoration:none}.guide-links a:before{content:"→ ";color:#f0c060;font-weight:600}.blog-more-link{color:var(--color-primary-hover);margin-top:8px;font-size:13px;font-weight:600;text-decoration:none;display:inline-block}.blog-more-link:hover{color:var(--color-primary)}.home-faq-card .faq-item{border-bottom:1px solid var(--color-border-accent);margin-bottom:0;padding:14px 0}.home-faq-card .faq-item:last-child{border-bottom:none;padding-bottom:0}.home-faq-card .faq-item:first-child{padding-top:0}.definition-block{color:#444;border:1px solid #f0ddb0;border-left:4px solid var(--color-primary);background:linear-gradient(135deg,#fdf5e6 0%,#fef3d0 100%);border-radius:0 10px 10px 0;margin-bottom:24px;padding:18px 22px;font-size:14px;line-height:1.7}.key-takeaway{border-left:4px solid var(--color-primary);background:var(--color-bg-tinted);color:#444;border-radius:0 8px 8px 0;margin:20px 0 24px;padding:16px 20px;font-size:14px;line-height:1.7}.key-takeaway strong{color:var(--color-primary-active)}.faq-section{margin-top:12px}.faq-item{margin-bottom:20px}.faq-question{color:#1a1a1a;margin:0 0 6px;font-size:15px;font-weight:600}.faq-answer{color:#555;margin:0;font-size:14px;line-height:1.7}.comparison-table{border-collapse:collapse;width:100%;margin:16px 0 24px;font-size:13px}.comparison-table th{background:var(--color-primary);color:#fff;text-align:center;padding:10px 12px;font-weight:700}.comparison-table th:first-child{border-radius:8px 0 0}.comparison-table th:last-child{border-radius:0 8px 0 0}.comparison-table td{text-align:center;color:#444;border-bottom:1px solid #eee;padding:8px 12px}.comparison-table td:first-child{text-align:left;font-weight:600}.comparison-table tr:nth-child(2n) td{background:#fdf8ef}.about-card{background:linear-gradient(135deg,#fdf5e6 0%,#fef0d0 100%);border:1px solid #f0ddb0;border-radius:10px;margin-top:28px;margin-bottom:32px;padding:24px 28px}.about-card h2{color:#333;margin:0 0 8px;font-size:17px}.about-card p{color:#555;margin:0 0 14px;font-size:14px;line-height:1.5}.about-card .btn{padding:7px 16px;font-size:13px;text-decoration:none;display:inline-block}.site-footer{background:var(--color-footer-bg);border-top:1px solid var(--color-footer-border);margin-top:20px;padding:24px 20px}.footer-inner{text-align:center;max-width:700px;margin:0 auto}.footer-links{flex-wrap:wrap;justify-content:center;gap:8px 20px;margin-bottom:12px;display:flex}.footer-links a{color:#666;font-size:13px;text-decoration:none}.footer-links a:hover{color:var(--color-primary-hover);text-decoration:underline}.footer-copy{color:#999;font-size:12px}.blog-grid{flex-direction:column;gap:16px;margin-top:20px;display:flex}.blog-card{color:inherit;background:#fff;border:1.5px solid #e0e0e0;border-radius:12px;padding:20px;text-decoration:none;transition:border-color .15s,box-shadow .15s;display:block}.blog-card:hover{border-color:var(--color-primary);box-shadow:0 2px 12px var(--color-primary-tint-8)}.blog-card-meta{color:#999;margin-bottom:6px;font-size:12px}.blog-card-title{color:#1a1a1a;margin-bottom:6px;font-size:16px;font-weight:700;line-height:1.4}.blog-card-excerpt{color:#666;margin-bottom:8px;font-size:13px;line-height:1.6}.blog-card-link{color:var(--color-primary-hover);font-size:13px;font-weight:600}.blog-post{line-height:1.7}.post-meta{color:#999;margin-bottom:20px;font-size:13px}.blog-post h3{color:#1a1a1a;margin-top:24px;margin-bottom:8px;font-size:16px}.infographic{text-align:center;margin:28px 0;overflow-x:auto}.infographic svg{max-width:100%;height:auto}.code-block{color:#cdd6f4;white-space:pre;background:#1e1e2e;border-radius:10px;margin:12px 0 16px;padding:16px 20px;font-family:SF Mono,Consolas,Courier New,monospace;font-size:13px;line-height:1.6;overflow-x:auto}.related-links{border-top:1px solid var(--color-border);margin-top:32px;padding-top:24px}.related-links h2{color:#1a1a1a;margin-bottom:12px;font-size:15px}.related-links ul{flex-direction:column;gap:8px;padding:0;list-style:none;display:flex}.related-links li a{border:1px solid var(--color-border);background:#fff;border-radius:10px;padding:12px 16px;text-decoration:none;transition:border-color .15s,box-shadow .15s;display:block}.related-links li a:hover{border-color:var(--color-primary);box-shadow:0 2px 8px var(--color-primary-tint-8)}.related-links li a strong{color:var(--color-primary-hover);margin-bottom:2px;font-size:14px;display:block}.related-links li a span{color:#888;font-size:12px}