/* PixelUtility — lightweight, responsive styles */
:root{--ink:#17243a;--muted:#5b6880;--blue:#2857d9;--blue-dark:#1f45b5;--mint:#dff7f1;--line:#e1e7f0;--paper:#fff;--wash:#f5f7fb;--radius:18px;--shadow:0 14px 40px rgba(29,48,83,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--wash);color:var(--ink);font:16px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}img{max-width:100%;height:auto}a{color:var(--blue);text-underline-offset:3px}a:hover{color:var(--blue-dark)}:focus-visible{outline:3px solid #f0b84b;outline-offset:3px}.skip-link{position:absolute;left:12px;top:-70px;background:#fff;padding:12px 16px;border-radius:8px;z-index:100;color:var(--ink)}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav-wrap{max-width:1160px;margin:auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:1.16rem;letter-spacing:-.03em}.brand img{width:34px;height:34px}.nav-links{display:flex;align-items:center;gap:22px}.nav-links a{color:#35425a;text-decoration:none;font-size:.94rem;font-weight:600}.nav-links a:hover{color:var(--blue)}.menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 12px;color:var(--ink);font:inherit;font-weight:650}.container{width:min(1120px,calc(100% - 40px));margin-inline:auto}.hero{padding:54px 0 28px}.eyebrow{display:inline-flex;align-items:center;gap:8px;border-radius:99px;padding:6px 12px;background:var(--mint);color:#17665b;font-size:.82rem;font-weight:750;letter-spacing:.02em}.hero h1{font-size:clamp(2.25rem,5vw,4.1rem);line-height:1.08;letter-spacing:-.055em;max-width:780px;margin:18px 0}.hero p{max-width:730px;color:var(--muted);font-size:1.12rem;margin:0}.tool-shell{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);gap:20px;align-items:stretch;margin:20px auto 56px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;min-width:0}.panel h2,.panel h3{margin-top:0;letter-spacing:-.025em}.panel h2{font-size:1.35rem}.drop-zone{border:2px dashed #bdc9dc;border-radius:15px;background:#f9fbff;text-align:center;padding:30px 18px;transition:border-color .2s,background .2s}.drop-zone.dragover{border-color:var(--blue);background:#edf2ff}.upload-icon{width:48px;height:48px;display:grid;place-items:center;margin:0 auto 12px;background:#e7edff;color:var(--blue);border-radius:14px;font-size:1.5rem}.drop-zone p{margin:5px 0;color:var(--muted)}.file-input{display:block;width:100%;margin-top:14px;font:inherit;font-size:.92rem}.small{font-size:.87rem;color:var(--muted)}.file-summary{display:none;margin-top:14px;padding:12px 14px;background:#f1f7f5;border-radius:12px;font-size:.92rem}.file-summary.visible{display:block}.control-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}.field{display:flex;flex-direction:column;gap:6px}.field label,.field legend{font-size:.9rem;font-weight:700}.field input[type=number],.field select{width:100%;border:1px solid #cbd5e3;border-radius:10px;padding:11px 12px;background:#fff;color:var(--ink);font:inherit;min-width:0}.field input:disabled,.field select:disabled{background:#f2f4f7;color:#79849a}.check-row{display:flex;align-items:center;gap:9px;margin-top:14px;font-size:.92rem}.check-row input{width:18px;height:18px;accent-color:var(--blue)}.quality-row{margin-top:18px}.quality-head{display:flex;justify-content:space-between;gap:10px;font-size:.9rem;font-weight:700}.quality-row input{width:100%;accent-color:var(--blue);margin:12px 0 0}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:11px 17px;background:var(--blue);color:#fff;font:inherit;font-weight:750;text-decoration:none;cursor:pointer;transition:transform .15s,background .15s}.button:hover{background:var(--blue-dark);color:#fff}.button:active{transform:translateY(1px)}.button.secondary{background:#fff;border-color:#cbd5e3;color:var(--ink)}.button.secondary:hover{background:#f5f7fb}.button:disabled{opacity:.45;cursor:not-allowed}.preview-stage{min-height:290px;display:grid;place-items:center;overflow:hidden;border-radius:14px;border:1px solid var(--line);background-color:#f7f9fc;background-image:linear-gradient(45deg,#e9edf4 25%,transparent 25%),linear-gradient(-45deg,#e9edf4 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e9edf4 75%),linear-gradient(-45deg,transparent 75%,#e9edf4 75%);background-size:24px 24px;background-position:0 0,0 12px,12px -12px,-12px 0}.preview-stage img{display:block;max-width:100%;max-height:390px;object-fit:contain}.preview-empty{text-align:center;padding:24px;color:var(--muted)}.preview-empty strong{display:block;color:#35425a;margin-bottom:5px}.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:14px}.stat{background:#f7f9fc;border:1px solid var(--line);padding:12px;border-radius:12px;min-width:0}.stat span{display:block;color:var(--muted);font-size:.8rem}.stat strong{display:block;overflow-wrap:anywhere;font-size:1rem}.result-note{margin-top:12px;color:#17665b;font-size:.9rem;min-height:1.4em}.content-section{padding:24px 0 48px}.section-heading{max-width:750px;margin-bottom:24px}.section-heading h2{font-size:clamp(1.7rem,3vw,2.45rem);line-height:1.2;letter-spacing:-.04em;margin:0 0 12px}.section-heading p{color:var(--muted);margin:0}.info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.info-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:21px}.info-card .number{display:grid;place-items:center;width:35px;height:35px;background:#e7edff;color:var(--blue);border-radius:11px;font-weight:800;margin-bottom:12px}.info-card h3{margin:0 0 8px;font-size:1.08rem}.info-card p{margin:0;color:var(--muted);font-size:.95rem}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:40px;align-items:start}.prose{max-width:760px}.prose h2{font-size:1.65rem;line-height:1.25;letter-spacing:-.035em;margin:38px 0 12px}.prose h3{font-size:1.18rem;margin:25px 0 8px}.prose p,.prose li{color:#35425a}.prose li{margin:.45rem 0}.prose ul,.prose ol{padding-left:1.35rem}.callout{padding:17px 19px;border-left:4px solid var(--blue);background:#edf2ff;border-radius:0 12px 12px 0;margin:22px 0}.callout p{margin:0}.toc{position:sticky;top:100px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px}.toc h2{font-size:1rem;margin:0 0 10px}.toc a{display:block;color:#4d5a70;text-decoration:none;padding:5px 0;font-size:.9rem}.toc a:hover{color:var(--blue)}.faq-list{display:grid;gap:10px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:13px;padding:16px 18px}.faq-list summary{cursor:pointer;font-weight:750}.faq-list details p{color:#4d5a70;margin:12px 0 0}.site-footer{margin-top:35px;background:#fff;border-top:1px solid var(--line)}.footer-inner{max-width:1120px;margin:auto;padding:30px 24px;display:flex;justify-content:space-between;gap:24px;align-items:flex-start}.footer-inner p{margin:5px 0;color:var(--muted);font-size:.9rem}.footer-links{display:flex;flex-wrap:wrap;gap:12px 18px}.footer-links a{font-size:.9rem;color:#46536b}.page-hero{padding:48px 0 20px}.page-hero h1{font-size:clamp(2.1rem,4vw,3.2rem);line-height:1.1;letter-spacing:-.05em;margin:15px 0}.legal-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:clamp(22px,4vw,42px);margin-bottom:50px}.legal-card h2{margin-top:32px;font-size:1.35rem}.legal-card h2:first-child{margin-top:0}.legal-card p,.legal-card li{color:#35425a}.legal-card .updated{color:var(--muted);font-size:.9rem}.notice{font-size:.9rem;color:var(--muted)}
@media(max-width:850px){.tool-shell{grid-template-columns:1fr}.info-grid{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr}.toc{position:static;order:-1}.nav-wrap{padding-inline:20px}.nav-links{gap:14px}}
@media(max-width:640px){.container{width:min(100% - 28px,1120px)}.nav-wrap{padding:12px 14px;flex-wrap:wrap}.menu-toggle{display:inline-flex}.nav-links{display:none;width:100%;flex-direction:column;align-items:flex-start;gap:0;padding:4px 0 8px}.nav-links.open{display:flex}.nav-links a{display:block;padding:10px 4px;width:100%}.hero{padding-top:38px}.hero p{font-size:1rem}.panel{padding:17px}.control-grid{gap:11px}.info-grid{grid-template-columns:1fr}.footer-inner{padding:24px 16px;flex-direction:column}.stats{gap:8px}.preview-stage{min-height:230px}.button-row .button{flex:1 1 auto}.page-hero{padding-top:34px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}