:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--accent:#4f7cff;--accent-hover:#3b64e0;--border:color-mix(in srgb, currentColor 18%, transparent);--dim:color-mix(in srgb, currentColor 55%, transparent);--surface:color-mix(in srgb, currentColor 7%, transparent);--surface-hover:color-mix(in srgb, currentColor 12%, transparent)}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.5}.app{max-width:860px;padding:1.5rem 1.25rem 3rem;padding-left:max(1.25rem, env(safe-area-inset-left));padding-right:max(1.25rem, env(safe-area-inset-right));margin:0 auto}.header-row{justify-content:space-between;align-items:center;gap:1rem;display:flex}header h1{margin:0 0 .25rem;font-size:1.8rem}.tagline{color:var(--dim);margin:0 0 1rem}.lang-picker{background:var(--surface);border-radius:999px;align-items:center;gap:.4rem;padding:0 .4rem 0 .7rem;font-size:.9rem;transition:background-color .15s;display:inline-flex;position:relative}.lang-picker:hover{background:var(--surface-hover)}.lang-picker:focus-within{outline:2px solid var(--accent);outline-offset:2px}.lang-picker select{font:inherit;appearance:none;color:inherit;cursor:pointer;background-color:#0000;border:none;outline:none;min-height:40px;padding:.45rem 1.3rem .45rem .15rem;font-size:.88rem}.lang-picker:after{content:"";border-right:1.5px solid var(--dim);border-bottom:1.5px solid var(--dim);pointer-events:none;width:.45rem;height:.45rem;position:absolute;top:50%;right:.65rem;transform:translateY(-70%)rotate(45deg)}.lang-picker select option{color:canvastext;background-color:canvas}.step-indicator{flex-wrap:wrap;align-items:center;gap:.35rem;margin:0 0 1.25rem;display:flex}.step{color:var(--dim);border-radius:999px;align-items:center;gap:.4rem;padding:.25rem .6rem .25rem .3rem;font-size:.85rem;display:inline-flex}.step:not(:last-child):after{content:"›";color:var(--dim);margin-left:.35rem}.step-num{border:1.5px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:1.5rem;height:1.5rem;font-size:.75rem;font-weight:700;display:inline-flex}.step.active{color:inherit;font-weight:600}.step.active .step-num{background:var(--accent);border-color:var(--accent);color:#fff}.step.done{color:inherit}.step.done .step-num{color:#fff;background:#2fb344;border-color:#2fb344}.step-optional{color:var(--dim);font-weight:400}@media (width<=480px){.step-label{display:none}.step.active .step-label{display:inline}}.spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:1.6rem;height:1.6rem;margin-bottom:.75rem;animation:.8s linear infinite spin;display:inline-block}.spinner.small{vertical-align:-.1em;border-width:2px;border-top-color:#fff;width:.9rem;height:.9rem;margin:0 .45rem 0 0}@keyframes spin{to{transform:rotate(360deg)}}.dim{color:var(--dim);font-size:.85rem}.error{color:#d33;font-size:.9rem}.error.banner{border:1px solid #d33;border-radius:8px;margin-bottom:1rem;padding:.6rem 1rem}.uploader{border:2px dashed var(--border);text-align:center;cursor:pointer;border-radius:12px;padding:3.5rem 1.5rem;transition:border-color .15s,background .15s}.uploader:hover,.uploader.drag-over{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 6%, transparent)}.uploader.busy{cursor:progress}.uploader-icon{margin-bottom:.5rem;font-size:2rem;display:block}.uploader-title{margin:0 0 .4rem;font-size:1.1rem;font-weight:600}.uploader-sub{color:var(--dim);max-width:34rem;margin:0 auto;font-size:.9rem}.offline-badge{color:var(--dim);align-items:center;gap:.5rem;margin:.9rem 0 0;font-size:.85rem;display:flex}.offline-dot{background:#999;border-radius:50%;flex-shrink:0;width:8px;height:8px}.offline-badge.loading .offline-dot{background:#e6a700;animation:1.2s ease-in-out infinite pulse}.offline-badge.ready .offline-dot{background:#2fb344}.offline-badge.warn .offline-dot{background:#e6a700}.offline-badge.err{color:#d33}.offline-badge.err .offline-dot{background:#d33}@keyframes pulse{50%{opacity:.35}}@media (prefers-reduced-motion:reduce){.offline-badge.loading .offline-dot{animation:none}.uploader,.lang-picker{transition:none}}.hint{color:var(--dim);font-size:.9rem}.editor-canvas-wrap{touch-action:none;cursor:ew-resize;-webkit-user-select:none;user-select:none;border-radius:8px;display:inline-block;position:relative;overflow:hidden}.editor-canvas-wrap:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.editor-canvas-wrap canvas{max-width:100%;display:block}.axis-line{pointer-events:none;border-left:2px dashed #ffd400;width:0;position:absolute;top:0;bottom:0;transform:translate(-1px);box-shadow:0 0 4px #0009}.axis-grip{color:#333;-webkit-user-select:none;user-select:none;background:#ffd400;border-radius:8px;padding:.3rem .4rem;font-size:.85rem;line-height:1;position:absolute;top:50%;left:0;transform:translate(-50%,-50%)}.editor-actions{flex-wrap:wrap;gap:.6rem;margin-top:1rem;display:flex}button,.button{font:inherit;cursor:pointer;border:1px solid var(--border);min-height:44px;color:inherit;-webkit-tap-highlight-color:transparent;touch-action:manipulation;background:0 0;border-radius:10px;justify-content:center;align-items:center;padding:.6rem 1.1rem;text-decoration:none;display:inline-flex}button:focus-visible,.button:focus-visible,.uploader:focus-visible,.axis-line:focus-visible,.cut-line:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button.primary,.button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover,.button.primary:hover{background:var(--accent-hover)}button.secondary:hover{border-color:var(--accent)}.results-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem;margin-top:1rem;display:grid}.result-card{border:1px solid var(--border);text-align:center;border-radius:12px;margin:0;padding:1rem}.result-card.a{border-top:4px solid var(--accent)}.result-card.b{border-top:4px solid #ff8c42}.result-card img{border-radius:8px;max-width:100%;height:auto}.result-card figcaption{margin:.6rem 0 .8rem;font-weight:600}.mix-cta{border:1px solid var(--border);border-radius:12px;margin-top:1.25rem;padding:1rem}.mix-cta .hint{margin-top:0}.splice-toolbar{flex-wrap:wrap;align-items:center;gap:.6rem;margin-bottom:1rem;display:flex}button:disabled{opacity:.45;cursor:not-allowed}.splice-src{text-align:center;margin:0}.splice-src figcaption{border-radius:999px;margin-top:.4rem;padding:.15rem .6rem;font-size:.85rem;font-weight:600;display:inline-block}.splice-src.a figcaption,.tag.a{background:color-mix(in srgb, var(--accent) 18%, transparent);color:var(--accent)}.splice-src.b figcaption,.tag.b{color:#e07020;background:#ff8c4233}.tag{white-space:nowrap;border-radius:999px;padding:.05rem .45rem;font-weight:600}.cut-line{touch-action:none;z-index:2;position:absolute}.cut-line.h{cursor:ns-resize;border-top:2px dashed #ffd400;height:0;left:0;right:0}.cut-line.v{cursor:ew-resize;border-left:2px dashed #ffd400;width:0;top:0;bottom:0}.cut-line.h:before,.cut-line.v:before{content:"";position:absolute}.cut-line.h:before{height:24px;top:-12px;left:0;right:0}.cut-line.v:before{width:24px;top:0;bottom:0;left:-12px}.cut-line.dragging{border-color:#ffea70}.cut-grip{color:#333;-webkit-user-select:none;user-select:none;background:#ffd400;border-radius:6px;padding:.2rem .3rem;font-size:.7rem;line-height:1;position:absolute}.cut-line.h .cut-grip{top:-9px;left:4px}.cut-line.v .cut-grip{top:4px;left:-9px}.cut-remove{color:#fff;cursor:pointer;z-index:3;background:#d33;border:none;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;min-height:24px;padding:0;font-size:.85rem;line-height:1;display:flex;position:absolute}.cut-remove:after{content:"";border-radius:50%;position:absolute;inset:-10px}.cut-remove:hover{background:#b02020}.cut-line.h .cut-remove{top:-10px;left:30px}.cut-line.v .cut-remove{top:30px;left:-10px}.pick-layout{align-items:flex-start;gap:1.25rem;display:flex}.pick-sources{flex-direction:column;flex-shrink:0;gap:.75rem;display:flex}.splice-src.small canvas{border-radius:6px;max-width:100%;display:block}@media (width<=640px){.pick-layout{flex-direction:column}.pick-sources{flex-direction:row;width:100%}.pick-sources .splice-src.small{flex:1;min-width:0}}.pick-preview{flex:1;min-width:260px}.pick-canvas-wrap{-webkit-user-select:none;user-select:none;border-radius:8px;display:inline-block;position:relative;overflow:hidden}.pick-canvas-wrap canvas{max-width:100%;display:block}.tile{cursor:pointer;background:0 0;border:none;border-radius:0;min-height:0;margin:0;padding:0;position:absolute}.tile.a{box-shadow:inset 3px 3px 0 color-mix(in srgb, var(--accent) 75%, transparent)}.tile.b{box-shadow:inset 3px 3px #ff8c42cc}.tile:hover{background:#ffffff1f}.tile:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.cut-line:focus-visible{outline:none}.cut-line:focus-visible .cut-grip{outline:2px solid var(--accent);outline-offset:2px}.strip-label{color:#fff;pointer-events:none;background:#0000008c;border-radius:6px;padding:.15rem .45rem;font-size:.75rem;font-weight:700;position:absolute;top:6px;left:6px}.tile.a .strip-label{background:var(--accent)}.tile.b .strip-label{background:#e07020}.pick-caption{margin-top:.5rem}.mix-tips{flex-direction:column;gap:.3rem;margin:.5rem 0 0;padding:0;list-style:none;display:flex}.mix-tips li{align-items:baseline;gap:.5rem;display:flex}.tip-icon{flex-shrink:0}.src-key{color:#fff;border-radius:5px;justify-content:center;align-items:center;width:1.3rem;height:1.3rem;margin-right:.4rem;font-size:.75rem;font-weight:700;display:inline-flex}.splice-src.a .src-key{background:var(--accent)}.splice-src.b .src-key{background:#e07020}.seo-content{margin-top:3.5rem}.seo-content h2{text-transform:uppercase;letter-spacing:.08em;color:var(--dim);text-wrap:balance;margin:2rem 0 .9rem;font-size:.8rem;font-weight:600}.how-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.75rem;margin:0;padding:0;list-style:none;display:grid}.how-card{border:1px solid var(--border);color:var(--dim);border-radius:12px;padding:.9rem 1rem;font-size:.85rem;line-height:1.45;position:relative}.how-num{background:color-mix(in srgb, var(--accent) 14%, transparent);width:1.4rem;height:1.4rem;color:var(--accent);border-radius:50%;justify-content:center;align-items:center;margin-bottom:.5rem;font-size:.75rem;font-weight:700;display:inline-flex}.how-card .how-num{display:flex}.faq-list{flex-direction:column;display:flex}.faq-item{border-bottom:1px solid var(--border)}.faq-item summary{cursor:pointer;-webkit-tap-highlight-color:transparent;border-radius:8px;justify-content:space-between;align-items:center;gap:.75rem;padding:.8rem .25rem;font-size:.92rem;font-weight:500;list-style:none;display:flex}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:hover{color:var(--accent)}.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.faq-chevron{color:var(--dim);flex-shrink:0;font-size:1.1rem;transition:transform .15s;transform:rotate(90deg)}.faq-item[open] .faq-chevron{transform:rotate(-90deg)}@media (prefers-reduced-motion:reduce){.faq-chevron{transition:none}}.faq-item p{color:var(--dim);max-width:44rem;margin:0 0 .9rem;padding:0 .25rem;font-size:.88rem}footer{border-top:1px solid var(--border);margin-top:2.5rem;padding-top:1rem}@media (width<=640px){.app{padding-top:1rem}header h1{font-size:1.4rem}.uploader{padding:2.25rem 1rem}.editor-actions{flex-direction:column}.editor-actions button,.editor-actions .button{width:100%}.splice-toolbar button{flex:1}.results-grid{grid-template-columns:1fr}.cut-line.h:before{height:32px;top:-16px}.cut-line.v:before{width:32px;left:-16px}}