:root{--primary:#2563eb;--primary-dark:#1d4ed8;--surface:#ffffff;--surface-muted:#f4f6fb;--border:#adc2de;--text-main:#0f172a;--text-muted:#64748b;--shadow-soft:0 20px 45px rgba(15,23,42,0.08);}
.ifx-visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.ifx-shell{margin:0 auto 2.5rem;padding:0;}
.ifx-drop{border:2px dashed var(--border);border-radius:20px;padding:clamp(1.5rem,4vw,2.75rem);text-align:center;background:linear-gradient(145deg,var(--surface-muted) 0%,var(--surface) 100%);transition:border-color .2s,box-shadow .2s;}
.ifx-drop:focus-within,.ifx-drop--drag{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 25%,transparent);}
.ifx-drop__title{font-size:clamp(1.1rem,3vw,1.35rem);font-weight:600;color:var(--text-main);margin:0 0 .35rem;}
.ifx-drop__hint{font-size:.9rem;color:var(--text-muted);margin:0;}
.ifx-drop__hint span{color:var(--text-main);font-weight:500;}
.ifx-file{position:absolute;width:.1px;height:.1px;opacity:0;pointer-events:none;}
.ifx-app{margin-top:1rem;}
.ifx-topbar{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;justify-content:space-between;margin-bottom:.75rem;}
.ifx-topbar__actions{display:flex;gap:.4rem;flex-wrap:wrap;}
.ifx-btn{display:inline-flex;align-items:center;justify-content:center;gap:.35rem;padding:.55rem 1rem;border-radius:999px;font-size:.85rem;font-weight:600;border:1px solid var(--border);background:var(--surface);color:var(--text-main);cursor:pointer;transition:background .15s,border-color .15s,transform .1s;}
.ifx-btn:active{transform:scale(.98);}
.ifx-btn--solid{background:var(--primary);border-color:var(--primary);color:#fff;}
.ifx-btn--solid:disabled{opacity:.45;cursor:not-allowed;}
.ifx-btn--ghost{background:transparent;color:var(--text-muted);}
.ifx-btn--ghost:hover{color:var(--text-main);border-color:var(--primary);}
.ifx-stage-rail{display:flex;gap:.65rem;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;padding-bottom:.35rem;margin-bottom:1rem;scrollbar-width:thin;}
.ifx-stage-rail::-webkit-scrollbar{height:4px;}
.ifx-stage-rail::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px;}
.ifx-slide{flex:0 0 min(100%,420px);scroll-snap-align:start;border-radius:16px;background:var(--surface-muted);border:1px solid var(--border);padding:.5rem;display:flex;flex-direction:column;min-height:220px;}
@media (min-width:900px){.ifx-stage-rail{overflow:visible;scroll-snap-type:none;display:grid;grid-template-columns:1fr 1.15fr;gap:1rem;}.ifx-slide{flex:none;min-height:280px;}}
.ifx-slide__label{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);margin:0 0 .35rem .25rem;}
.ifx-canvas-wrap{flex:1;display:flex;align-items:center;justify-content:center;border-radius:12px;background:repeating-conic-gradient(var(--surface) 0% 25%,var(--surface-muted) 0% 50%) 50% / 16px 16px;min-height:200px;position:relative;overflow:hidden;}
.ifx-canvas-wrap canvas{max-width:100%;max-height:min(55vh,420px);width:auto;height:auto;display:none;vertical-align:middle;}
.ifx-ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;color:var(--text-muted);font-size:.9rem;padding:1rem;text-align:center;}
.ifx-ph i{font-size:1.75rem;opacity:.5;}
.ifx-dock{border-radius:18px;border:1px solid var(--border);background:var(--surface);padding:clamp(.85rem,2.5vw,1.15rem);box-shadow:var(--shadow-soft);margin-bottom:1rem;}
.ifx-catstrip{display:flex;gap:.4rem;overflow-x:auto;padding-bottom:.25rem;margin-bottom:.75rem;-webkit-overflow-scrolling:touch;scrollbar-width:none;}
.ifx-catstrip::-webkit-scrollbar{display:none;}
.ifx-chip{flex:0 0 auto;padding:.45rem .85rem;border-radius:999px;border:1px solid var(--border);background:var(--surface-muted);color:var(--text-main);font-size:.8rem;font-weight:600;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s,color .15s;}
.ifx-chip[aria-pressed="true"]{background:color-mix(in srgb,var(--primary) 18%,var(--surface));border-color:var(--primary);color:var(--primary-dark);}
.ifx-row{display:flex;flex-direction:column;gap:.35rem;margin-bottom:.75rem;}
.ifx-row:last-child{margin-bottom:0;}
.ifx-row label,.ifx-row .ifx-row__label{font-size:.8rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;}
.ifx-select{width:100%;padding:.65rem .85rem;border-radius:12px;border:1px solid var(--border);background:var(--surface-muted);color:var(--text-main);font-size:.95rem;}
.ifx-intensity{display:flex;align-items:center;gap:.75rem;}
.ifx-intensity input[type="range"]{flex:1;accent-color:var(--primary);}
.ifx-badge{min-width:3rem;text-align:center;padding:.25rem .5rem;border-radius:8px;background:var(--surface-muted);font-size:.85rem;font-weight:600;color:var(--text-main);}
.ifx-gallery{margin-top:1rem;}
.ifx-gallery__head{font-size:.75rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted);margin:0 0 .5rem;}
.ifx-tiles{display:flex;gap:.5rem;overflow-x:auto;padding-bottom:.35rem;-webkit-overflow-scrolling:touch;}
.ifx-tile{flex:0 0 auto;width:104px;border-radius:12px;overflow:hidden;border:2px solid transparent;cursor:pointer;transition:border-color .15s,transform .1s;background:var(--surface-muted);}
.ifx-tile:active{transform:scale(.97);}
.ifx-tile--on{border-color:var(--primary);box-shadow:0 0 0 1px color-mix(in srgb,var(--primary) 35%,transparent);}
.ifx-tile canvas{display:block;width:104px;height:72px;object-fit:cover;}
.ifx-tile__label{display:block;padding:.35rem .4rem;font-size:.68rem;font-weight:600;text-align:center;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;background:linear-gradient(180deg,transparent,rgba(0,0,0,.06));}
.ifx-loading{font-size:.85rem;color:var(--text-muted);padding:1rem;text-align:center;}
.ifx-prose{margin:2.5rem auto 0;padding:0 .25rem;}
.ifx-prose h2{font-size:clamp(1.15rem,2.5vw,1.4rem);font-weight:700;margin:2rem 0 .75rem;color:var(--text-main);}
.ifx-prose h2:first-child{margin-top:0;}
.ifx-prose p{font-size:1rem;line-height:1.65;color:var(--text-main);margin:0 0 1rem;}
.ifx-prose dl{margin:1rem 0;padding:1rem;border-radius:14px;border:1px solid var(--border);background:var(--surface-muted);}
.ifx-prose dt{font-weight:700;font-size:.9rem;margin-top:.75rem;color:var(--text-main);}
.ifx-prose dt:first-child{margin-top:0;}
.ifx-prose dd{margin:.25rem 0 0;font-size:.9rem;color:var(--text-muted);padding:0;}
.ifx-callout{margin:1.5rem 0;padding:1rem 1.1rem;border-left:4px solid var(--primary);border-radius:0 12px 12px 0;background:color-mix(in srgb,var(--primary) 8%,var(--surface));}
.ifx-callout p{margin:0;font-size:.95rem;line-height:1.6;color:var(--text-main);}
.ifx-meta{font-size:.8rem;color:var(--text-muted);margin-top:2rem;}
@media (max-width:599px){.ifx-dock{position:sticky;bottom:0;z-index:5;margin-bottom:0;border-radius:18px 18px 0 0;}}