
:root{--bg:#f6f8fc;--card:#fff;--text:#101827;--muted:#667085;--border:#e5eaf3;--primary:#2457ff;--primary-dark:#193fc6;--soft:#eef4ff;--success:#16a34a;--danger:#dc2626;--shadow:0 22px 70px rgba(15,23,42,.08);--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:radial-gradient(circle at top left,rgba(36,87,255,.12),transparent 32%),radial-gradient(circle at top right,rgba(124,58,237,.10),transparent 30%),linear-gradient(180deg,#fff 0%,var(--bg) 58%,#eef3fb 100%);line-height:1.6}a{color:inherit;text-decoration:none}.site-shell{width:min(1120px,calc(100% - 36px));margin:0 auto}.site-header{padding:22px 0 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6px;border-radius:6px;margin:2px 0}.diff-same{background:#f8fafc}.diff-add{background:#dcfce7}.diff-del{background:#fee2e2}@media(max-width:1020px){.text-sponsor-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.partner-ad-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:920px){.tool-layout{grid-template-columns:1fr}.output-card{position:static}.info-grid{grid-template-columns:1fr}.site-header{align-items:flex-start;flex-direction:column}.ad-products{grid-template-columns:1fr}}@media(max-width:640px){.text-sponsor-grid,.partner-ad-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bottom-banner-ad a{font-size:16px}.partner-card{height:124px;grid-template-rows:92px 32px}.text-sponsor-grid a{font-size:13px}.tool-grid{grid-template-columns:1fr}.form-row{grid-template-columns:1fr}.metric-grid{grid-template-columns:1fr}}@media(max-width:560px){.site-shell{width:min(100% - 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