:root{--ink:#17212f;--muted:#586477;--line:#dce3eb;--accent:#2459d3;--paper:#fff;--soft:#f4f7fb}*{box-sizing:border-box}body{margin:0;font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--soft)}a{color:var(--accent);text-underline-offset:3px}button,input,select,textarea{font:inherit}button,a,input,textarea,select{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #739afa;outline-offset:3px}.top{background:#fff;border-bottom:1px solid var(--line)}.top-inner{max-width:1160px;margin:auto;min-height:72px;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}.brand{font-size:24px;font-weight:900;letter-spacing:-1px;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:9px}.brand img{width:30px;height:30px}.top nav{display:flex;gap:20px;flex-wrap:wrap;font-size:14px}.top nav a{text-decoration:none;color:var(--muted)}main{max-width:1160px;padding:28px 24px 64px;margin:auto}.crumb{font-size:14px;color:var(--muted);margin-bottom:22px}.eyebrow{font-size:13px;letter-spacing:.1em;font-weight:700;color:var(--accent)}h1{font-size:clamp(26px,4vw,36px);line-height:1.3;letter-spacing:-.04em;margin:8px 0 12px}h2{font-size:22px;line-height:1.4;letter-spacing:-.02em}h3{font-size:18px}.intro{color:var(--muted);max-width:820px;margin-bottom:25px}.workspace{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:26px;margin:24px 0}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}label{display:block;font-weight:650;font-size:14px;margin-bottom:6px}textarea,input[type=text],input[type=url],input[type=number],select{width:100%;border:1px solid #b7c3d3;border-radius:7px;padding:11px 12px;background:#fff;color:var(--ink)}textarea{min-height:240px;resize:vertical;line-height:1.75}input[type=checkbox]{width:18px;height:18px;vertical-align:middle;accent-color:var(--accent)}.check{display:flex;align-items:center;gap:8px}.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:18px 0}.btn{border:1px solid var(--accent);border-radius:7px;padding:9px 17px;background:var(--accent);color:white;text-decoration:none;font-weight:650;font-size:14px}.btn.secondary{background:white;color:var(--accent);border-color:var(--line)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:9px;overflow:hidden;margin:18px 0}.stat{background:var(--soft);padding:17px}.stat span{display:block;font-size:13px;color:var(--muted)}.stat strong{display:block;font-size:24px;color:var(--accent);font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.hint{color:var(--muted);font-size:14px}.message{min-height:26px;color:#9b302b;font-size:14px}.reading{max-width:850px;margin:35px 0}.reading p,.reading li{color:#435066}.reading section{margin:30px 0}.reading details{border-bottom:1px solid var(--line);padding:14px 0}.reading summary{cursor:pointer;font-weight:650}.related,.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.tool-card{background:white;border:1px solid var(--line);border-radius:10px;padding:20px;text-decoration:none;color:var(--ink)}.tool-card:hover{border-color:var(--accent)}.tool-card strong{font-size:18px;display:block;margin:8px 0}.tool-card p{font-size:14px;color:var(--muted);margin:8px 0}.tag{font-size:12px;font-weight:650;color:var(--accent)}.result-box{white-space:pre-wrap;overflow-wrap:anywhere;border:1px solid var(--line);padding:15px;border-radius:7px;max-height:500px;overflow:auto}.diff-line{display:block;min-height:26px}.diff-add{background:#e1f5e9;color:#195c36}.diff-remove{background:#ffeded;color:#8d2727}.file-result{border-top:1px solid var(--line);padding:15px 0;display:flex;align-items:center;gap:16px;flex-wrap:wrap}.file-result img{width:90px;height:70px;object-fit:contain;background:var(--soft)}.file-result .details{flex:1;min-width:160px;overflow-wrap:anywhere}.scroll{overflow:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:13px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}th{color:var(--muted);font-weight:600}footer{border-top:1px solid var(--line);padding:25px;font-size:14px;color:var(--muted);text-align:center}.pill{display:inline-block;margin:4px;padding:6px 12px;border:1px solid var(--line);border-radius:20px;text-decoration:none;font-size:14px;background:white}.notice{background:#edf3ff;padding:14px 18px;border-radius:8px;color:#254878;font-size:14px}progress{width:100%;height:12px;accent-color:var(--accent)}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:white;padding:10px;z-index:100}.muted{color:var(--muted)}@media(max-width:720px){main{padding:20px 16px 40px}.workspace{padding:18px}.grid,.grid.three,.cards,.related{grid-template-columns:1fr}.top-inner{padding:12px 16px}.top nav{gap:13px}textarea{min-height:190px}.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.stat strong{font-size:22px}.actions .btn{flex:1;text-align:center}.top nav a{font-size:13px}h2{font-size:20px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Independent tool guides: readable comparisons and anchored sections. */
.page-toc{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin:20px 0;font-size:14px}.page-toc strong{font-size:14px}.page-toc ol{display:flex;flex-wrap:wrap;gap:7px 20px;margin:8px 0 0;padding:0;list-style:none}.page-toc a{text-decoration:none}.page-toc a:hover{text-decoration:underline}.tool-guide{max-width:930px}.tool-guide section{padding:12px 0 26px;margin:24px 0;border-bottom:1px solid var(--line);scroll-margin-top:20px}.tool-guide h2{font-size:24px;margin:7px 0 16px}.tool-guide h3{margin:24px 0 8px}.tool-guide p{line-height:1.85;word-break:keep-all;overflow-wrap:anywhere}.section-label{font-size:13px;font-weight:650;color:var(--accent);letter-spacing:.04em}.answer-lead{font-size:18px;color:var(--ink)!important}.guide-steps{padding-left:24px}.guide-steps li{padding:7px 0 7px 5px;line-height:1.8}.editorial-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px;margin:18px 0;background:#fff}.editorial-table{min-width:560px;table-layout:fixed;line-height:1.7}.editorial-table caption{text-align:left;padding:13px 16px;background:var(--soft);font-size:14px;font-weight:650;color:var(--ink);caption-side:top}.editorial-table th,.editorial-table td{white-space:normal;vertical-align:top;overflow-wrap:anywhere;word-break:keep-all;padding:14px 16px}.editorial-table thead th{background:var(--soft);color:var(--ink)}.editorial-table tbody th{color:var(--ink);font-weight:650}.editorial-table th:first-child{width:25%}.editorial-table tbody tr:last-child>*{border-bottom:0}.editorial-byline{font-size:14px}.editorial-byline>div{display:grid;grid-template-columns:180px 1fr;gap:12px;padding:10px 0}.editorial-byline dt{font-weight:650}.editorial-byline dd{margin:0;color:var(--muted)}.back-to-tool{font-size:14px;font-weight:650}.tool-direct{margin:0 0 18px;font-size:14px}.tool-direct summary{cursor:pointer;color:var(--accent);font-weight:650}.tool-direct nav{display:flex;gap:8px 18px;flex-wrap:wrap;margin:12px 0;padding:14px;background:white;border:1px solid var(--line);border-radius:8px}.tool-direct a[aria-current=page]{font-weight:750;text-decoration:none;color:var(--ink)}#tool{scroll-margin-top:16px}
@media(max-width:720px){.tool-guide h2{font-size:21px}.answer-lead{font-size:17px}.editorial-byline>div{grid-template-columns:1fr;gap:3px}.page-toc ol{gap:7px 15px}.editorial-table{min-width:0;font-size:13px}.editorial-table th,.editorial-table td{padding:10px 8px;word-break:normal}.editorial-table th:first-child{width:24%}}