:root{--bg:#07080d;--bg-soft:#0a0c11;--surface:#0d1017;--surface-2:#11151d;--border:#ffffff1c;--border-strong:#ffffff2e;--text:#f5f7fb;--muted:#9ca3b8;--muted-2:#737b90;--accent:#9cff00;--accent-soft:#9cff0014;--accent-border:#9cff0052;--radius:18px;--container:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:radial-gradient(circle at 50% 0%, #9cff0006, transparent 35%), var(--bg);min-width:320px;color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5;overflow-x:hidden}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}img{max-width:100%}.container{width:min(calc(100% - 40px), var(--container));margin-inline:auto}.site-header{z-index:50;border-bottom:1px solid 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18px}.control-heading{flex-direction:column;gap:17px}.dimension-grid{grid-template-columns:1fr}.lock-button{width:100%}.preset-grid{grid-template-columns:repeat(2,1fr)}.format-grid,.compression-info{grid-template-columns:1fr}.compression-info-item{border-right:0;border-bottom:1px solid var(--border)}.compression-info-item:last-child{border-bottom:0}.action-area{flex-direction:column;align-items:stretch;padding:23px 18px}.primary-button{width:100%}.progress-area{padding:0 18px 24px}.feature-grid{grid-template-columns:1fr 1fr}.feature-card{min-height:220px;padding:20px}.feature-card h3{margin-top:35px}.footer-inner{flex-direction:column}.footer-links{justify-content:flex-start}.footer-bottom{flex-direction:column;gap:8px}}@media (width<=520px){.target-size-row{grid-template-columns:1fr 90px}.preset-grid,.feature-grid{grid-template-columns:1fr}.hero h1{font-size:clamp(43px,14vw,62px)}.hero-description{font-size:16px}.drop-zone h2{font-size:22px}}