:root{--lf-blue: #2563eb;--lf-blue-dark: #1d4ed8;--lf-green: #16a34a;--lf-ink: #172033;--lf-muted: #607089;--lf-line: #d8e0ea;--lf-soft: #f4f7fb;--lf-card: #ffffff;--lf-radius: 8px;color-scheme:light}body{margin:0;color:var(--lf-ink);background:#fff;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:var(--lf-blue)}.skip-link{position:fixed;top:.75rem;left:.75rem;z-index:1050;padding:.5rem .75rem;background:#fff;border:2px solid var(--lf-blue);border-radius:var(--lf-radius)}.hidden-file-input{display:none}.app-header{position:sticky;top:0;z-index:1000}.navbar{min-height:70px}.brand-mark{display:inline-grid;place-items:center;width:36px;height:36px;color:#fff;background:var(--lf-blue);border-radius:var(--lf-radius)}.intro-band{padding:3.25rem 0 2.5rem;background:linear-gradient(180deg,#f8fbff,#fff)}.intro-band h1{max-width:780px;margin:0;font-size:clamp(2.2rem,4vw,4rem);line-height:1.05;letter-spacing:0}.lead{max-width:760px;margin-top:1rem;color:var(--lf-muted)}.eyebrow{margin:0 0 .45rem;color:var(--lf-blue);font-size:.77rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.privacy-panel{display:flex;gap:1rem;align-items:flex-start;padding:1.25rem;background:#fff;border:1px solid var(--lf-line);border-radius:var(--lf-radius);box-shadow:0 14px 40px #17203314}.privacy-panel i{color:var(--lf-green);font-size:1.7rem}.privacy-panel span{display:block;margin-top:.25rem;color:var(--lf-muted)}.workspace-band{padding:2rem 0 3.5rem;background:var(--lf-soft)}.alert-region{min-height:64px}.drop-zone{display:grid;place-items:center;min-height:430px;padding:2rem;text-align:center;background:#fff;border:3px dashed #a9bae0;border-radius:var(--lf-radius);outline:none;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}.drop-zone:focus-visible,.drop-zone.is-dragging{border-color:var(--lf-blue);box-shadow:0 0 0 .25rem #2563eb2e}.drop-zone.is-dragging{transform:translateY(-2px)}.drop-zone>i{color:var(--lf-blue);font-size:5rem}.drop-zone h2{margin:.75rem 0 .25rem;font-size:clamp(1.8rem,5vw,3.1rem);letter-spacing:0}.drop-zone small{display:block;max-width:560px;margin-top:1rem;color:var(--lf-muted)}.btn{border-radius:var(--lf-radius);font-weight:700}.btn-primary{background:var(--lf-blue);border-color:var(--lf-blue)}.btn-primary:hover{background:var(--lf-blue-dark);border-color:var(--lf-blue-dark)}.btn-success{background:var(--lf-green);border-color:var(--lf-green)}.app-panels{margin-top:.25rem}.tool-card,.results-panel{padding:1.25rem;background:var(--lf-card);border:1px solid var(--lf-line);border-radius:var(--lf-radius);box-shadow:0 10px 28px #1720330f}.results-panel{margin-top:1.5rem}.section-heading{display:flex;gap:1rem;align-items:flex-start;justify-content:space-between;margin-bottom:1rem}.section-heading h2,.content-band h2{margin:0;letter-spacing:0}.preview-frame{display:grid;place-items:center;aspect-ratio:1 / 1;overflow:hidden;border:1px solid var(--lf-line);border-radius:var(--lf-radius)}.preview-frame img{width:min(78%,320px);height:min(78%,320px);object-fit:contain}.checkerboard{background-color:#fff;background-image:linear-gradient(45deg,#e8edf5 25%,transparent 25%),linear-gradient(-45deg,#e8edf5 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e8edf5 75%),linear-gradient(-45deg,transparent 75%,#e8edf5 75%);background-position:0 0,0 8px,8px -8px,-8px 0;background-size:16px 16px}.meta-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;margin:1rem 0 0}.meta-grid div{padding:.7rem;background:var(--lf-soft);border-radius:var(--lf-radius)}.meta-grid dt{color:var(--lf-muted);font-size:.78rem}.meta-grid dd{margin:.1rem 0 0;font-weight:800}.tab-simulator{display:inline-flex;align-items:center;max-width:100%;gap:.5rem;padding:.55rem 1.1rem .55rem .7rem;background:#eef2f7;border:1px solid #cfd8e5;border-bottom:0;border-radius:8px 8px 0 0}.tab-favicon{width:18px;height:18px;background-repeat:no-repeat;background-position:center;background-size:contain;border-radius:3px}fieldset{min-width:0;padding:0;margin:0;border:0}legend,.form-label{margin-bottom:.65rem;font-size:.95rem;font-weight:800}.option-stack,.bg-options,.feature-grid,.transparency-tool{display:grid;gap:.65rem}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.form-check{min-height:0;margin:0;padding-left:0}.option-stack .form-check-input,.feature-grid .form-check-input,.transparency-tool .form-check-input{float:none;flex:0 0 auto;margin-left:0;margin-top:0}.bg-options label,.feature-grid label,.option-stack label,.transparency-tool .form-check{display:flex;gap:.55rem;align-items:center;min-height:42px;padding:.55rem .7rem;background:var(--lf-soft);border:1px solid transparent;border-radius:var(--lf-radius)}.swatch,.custom-color input[type=color]{flex:0 0 auto;width:24px;height:24px;border:1px solid #9aa8bd;border-radius:50%}.swatch.white{background:#fff}.swatch.black{background:#000}.swatch.transparent{background-image:linear-gradient(45deg,#ddd 25%,transparent 25%),linear-gradient(-45deg,#ddd 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#ddd 75%),linear-gradient(-45deg,transparent 75%,#ddd 75%);background-size:10px 10px;background-position:0 0,0 5px,5px -5px,-5px 0}.custom-color input[type=color]{padding:0;overflow:hidden}.quality-indicator{padding:.45rem .65rem;color:var(--lf-blue);background:#eaf1ff;border-radius:var(--lf-radius);font-size:.85rem;font-weight:800}.action-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.25rem}.progress{height:1.25rem;margin-top:1rem}.view-toggle{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:flex-end}.view-toggle .active{color:#fff;background:var(--lf-blue);border-color:var(--lf-blue)}.icon-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:1rem}.icon-preview-card{padding:.85rem;text-align:center;background:#fff;border:1px solid var(--lf-line);border-radius:var(--lf-radius)}.icon-preview-image{position:relative;display:grid;place-items:center;aspect-ratio:1 / 1;margin-bottom:.6rem;overflow:hidden;border-radius:var(--lf-radius)}.icon-preview-image img{max-width:76%;max-height:76%;object-fit:contain}.icon-preview-card strong,.icon-preview-card span{display:block}.icon-preview-card span{color:var(--lf-muted);font-size:.82rem}.results-panel[data-preview-bg=dark] .icon-preview-image{background:#141923}.safe-zone-ring{position:absolute;inset:10%;display:none;border:2px dashed rgba(37,99,235,.72);border-radius:50%;pointer-events:none}.show-safe-zone .safe-zone-ring{display:block}.code-output{min-height:190px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.86rem}.editor-panel{margin-top:1.25rem;padding:1rem;background:#f8fbff;border:1px solid var(--lf-line);border-radius:var(--lf-radius)}.editor-panel h3{margin:0;font-size:1.25rem;letter-spacing:0}.edit-canvas-wrap{display:grid;place-items:center;min-height:250px;padding:1rem;border:1px solid var(--lf-line);border-radius:var(--lf-radius)}.edit-canvas-wrap canvas{max-width:100%;height:auto}.content-band{padding:3rem 0;background:#fff}.content-band.alt{background:var(--lf-soft)}.content-band p{max-width:920px;color:var(--lf-muted)}.info-card{display:grid;gap:.35rem;height:100%;padding:1rem;background:#fff;border:1px solid var(--lf-line);border-radius:var(--lf-radius)}.info-card span{color:var(--lf-muted)}.seo-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;margin-top:1rem}.accordion-button{font-weight:800}.site-footer{padding:1.5rem 0 2rem;color:#536179;background:#fff;border-top:1px solid var(--lf-line)}@media(max-width:767.98px){.intro-band{padding:2rem 0 1.5rem}.drop-zone{min-height:360px;padding:1.25rem}.section-heading{flex-direction:column}.feature-grid,.meta-grid,.seo-grid{grid-template-columns:1fr}.action-row .btn{width:100%}.tool-card,.results-panel{padding:1rem}}@media(min-width:768px)and (max-width:1199.98px){.seo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}