*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:#111827;background:#fff}
a{color:#1d4ed8;text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;background:#fff;padding:8px 12px;border:1px solid #1d4ed8;z-index:99}
header.site{border-bottom:1px solid #e5e7eb;position:sticky;top:0;background:rgba(255,255,255,.97);backdrop-filter:blur(6px);z-index:9}
header.site .wrap{display:flex;align-items:center;gap:18px;height:60px}
.logo{font-weight:600;font-size:18px;color:#111827;letter-spacing:-.01em;white-space:nowrap}
.logo span{color:#1d4ed8}
header.site nav{margin-left:auto;display:flex;gap:15px;font-size:14.5px;overflow-x:auto}
header.site nav a{color:#374151;white-space:nowrap}
.hero{padding:40px 0 26px;border-bottom:1px solid #f3f4f6}
.hero h1{margin:0 0 10px;font-size:31px;line-height:1.25;letter-spacing:-.02em}
.hero p.lead{margin:0 0 18px;max-width:780px;color:#4b5563;font-size:16.5px}
.stats{display:flex;gap:24px;flex-wrap:wrap;font-size:14px;color:#6b7280}
.stats b{color:#111827;font-weight:600}
.search{position:relative;max-width:560px;margin:20px 0 0;display:flex;gap:8px}
.search input{flex:1;min-width:0;padding:12px 14px;font-size:15px;border:1px solid #d1d5db;border-radius:10px;outline:none;font-family:inherit}
.search input:focus{border-color:#1d4ed8;box-shadow:0 0 0 3px rgba(29,78,216,.12)}
.search button{padding:12px 18px;border:0;border-radius:10px;background:#1d4ed8;color:#fff;font-size:15px;font-weight:600;cursor:pointer;font-family:inherit}
h2.sec{margin:36px 0 15px;font-size:21px;letter-spacing:-.01em;scroll-margin-top:70px}
h2.blk{margin:32px 0 12px;font-size:19px;letter-spacing:-.01em;scroll-margin-top:70px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.card{border:1px solid #e5e7eb;border-radius:12px;padding:15px 16px;display:block;color:inherit;background:#fff;transition:border-color .15s,transform .15s}
.card:hover{border-color:#c7d2fe;transform:translateY(-1px);text-decoration:none}
.c-top{display:flex;align-items:center;gap:9px;margin-bottom:7px}
.c-ico{width:32px;height:32px;flex:none;border-radius:8px;background:#eef2ff;color:#3730a3;display:flex;align-items:center;justify-content:center;font-size:11.5px;font-weight:600;letter-spacing:-.02em}
.c-name{font-weight:600;font-size:15.5px}
.c-pill{margin-left:auto;flex:none;font-size:11.5px;padding:2px 8px;border-radius:99px;background:#f3f4f6;color:#4b5563;white-space:nowrap}
.c-pill.free{background:#ecfdf5;color:#065f46}
.c-desc{margin:0;color:#4b5563;font-size:14px;line-height:1.6}
.c-cat{display:block;margin-top:9px;font-size:12.5px;color:#9ca3af}
.catcard{border:1px solid #e5e7eb;border-radius:12px;padding:16px;display:block;color:inherit}
.catcard:hover{border-color:#c7d2fe;text-decoration:none}
.catcard b{display:block;font-size:15.5px;margin-bottom:5px}
.catcard p{margin:0;font-size:13.5px;color:#4b5563;line-height:1.55}
.catcard em{display:block;margin-top:9px;font-style:normal;font-size:12.5px;color:#9ca3af}
.crumbs{font-size:13.5px;color:#6b7280;padding:18px 0 0}
.crumbs a{color:#6b7280}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}
.tool-head{padding:8px 0 22px;border-bottom:1px solid #f3f4f6}
.tool-head h1{margin:0 0 8px;font-size:30px;letter-spacing:-.02em}
.tool-head .tag{margin:0 0 16px;color:#4b5563;font-size:16.5px;max-width:780px}
.btn{display:inline-block;background:#1d4ed8;color:#fff;padding:11px 20px;border-radius:10px;font-weight:600;font-size:15px}
.btn:hover{background:#1e40af;text-decoration:none;color:#fff}
.btn.ghost{background:#fff;color:#1d4ed8;border:1px solid #c7d2fe;font-weight:500}
.btn.ghost:hover{background:#f8faff}
table.meta-table{width:100%;border-collapse:collapse;margin:6px 0 4px;font-size:14.5px}
table.meta-table th,table.meta-table td{text-align:left;padding:9px 12px;border-bottom:1px solid #f3f4f6;vertical-align:top}
table.meta-table th{width:158px;color:#6b7280;font-weight:500}
table.cmp{width:100%;border-collapse:collapse;font-size:14px;margin:10px 0 4px;display:block;overflow-x:auto}
table.cmp th,table.cmp td{padding:9px 11px;border-bottom:1px solid #f3f4f6;text-align:left;white-space:nowrap}
table.cmp th{background:#f9fafb;font-weight:600;color:#374151}
table.cmp td.w{white-space:normal;min-width:200px}
ul.feat{margin:0;padding-left:20px}
ul.feat li{margin:5px 0;color:#374151}
ol.steps{margin:0;padding-left:20px}
ol.steps li{margin:7px 0;color:#374151}
p.body{color:#374151;margin:0 0 12px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 0;padding:0;list-style:none}
.tagpill{display:inline-block;font-size:13px;padding:4px 11px;border-radius:99px;background:#f3f4f6;color:#374151}
.tagpill:hover{background:#e5e7eb;text-decoration:none}
.faq{border:1px solid #e5e7eb;border-radius:12px;overflow:hidden;margin-top:10px}
.faq details{border-bottom:1px solid #f3f4f6}
.faq details:last-child{border-bottom:0}
.faq summary{cursor:pointer;padding:13px 16px;font-weight:500;font-size:15px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:before{content:"+";display:inline-block;width:18px;color:#6b7280}
.faq details[open] summary:before{content:"\2212"}
.faq .ans{padding:0 16px 14px 34px;color:#4b5563;font-size:14.5px}
.note{background:#f9fafb;border:1px solid #f3f4f6;border-radius:12px;padding:14px 16px;font-size:14px;color:#4b5563;margin-top:26px}
.aznav{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0 0}
.aznav a{font-size:13px;padding:3px 9px;border:1px solid #e5e7eb;border-radius:6px;color:#374151}
.azlist{list-style:none;padding:0;margin:0;columns:3;column-gap:26px;font-size:14.5px}
.azlist li{margin:5px 0;break-inside:avoid}
.azlist .d{color:#9ca3af;font-size:12.5px}
.letter{font-size:13px;color:#6b7280;text-transform:uppercase;letter-spacing:.06em;margin:22px 0 6px;break-after:avoid}
.pager{display:flex;justify-content:space-between;gap:14px;margin:26px 0 0;font-size:14.5px}
.pager .lbl{display:block;font-size:12px;color:#9ca3af}
dl.gloss{margin:0}
dl.gloss dt{font-weight:600;font-size:16px;margin:20px 0 5px;scroll-margin-top:70px}
dl.gloss dd{margin:0 0 6px;color:#374151;font-size:15px}
.bestitem{border:1px solid #e5e7eb;border-radius:12px;padding:16px 18px;margin:0 0 12px}
.bestitem .rank{display:inline-block;min-width:26px;height:26px;line-height:26px;text-align:center;border-radius:8px;background:#eef2ff;color:#3730a3;font-size:13px;font-weight:600;margin-right:9px}
.bestitem h3{display:inline;font-size:17px;margin:0}
.bestitem p{margin:8px 0 0;color:#4b5563;font-size:14.5px}
.tocbox{border:1px solid #e5e7eb;border-radius:12px;padding:14px 18px;margin:16px 0}
.tocbox ul{margin:6px 0 0;padding-left:18px;columns:2;font-size:14.5px}
footer.site{border-top:1px solid #e5e7eb;margin-top:46px;padding:26px 0 40px;font-size:14px;color:#6b7280}
footer.site a{color:#4b5563}
footer.site .fcols{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:18px;margin-bottom:20px}
footer.site .fcols b{color:#374151;font-weight:600;font-size:13px;display:block;margin-bottom:5px}
footer.site ul{margin:0;padding:0}
.hidden{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
button.ml{background:none;border:0;padding:0;margin:0;font:inherit;font-size:inherit;color:#1d4ed8;text-decoration:underline;text-decoration-style:dotted;cursor:pointer}
button.ml:hover{text-decoration-style:solid}
@media(max-width:760px){
 .hero h1{font-size:25px}
 .azlist{columns:1}
 header.site nav{gap:12px;font-size:14px}
 table.meta-table th{width:110px}
 .tocbox ul{columns:1}
}

.langs{display:flex;gap:6px;flex-wrap:wrap;margin-left:auto;flex:0 0 auto;align-items:center}
.langs a{font-size:12px;padding:3px 8px;border-radius:999px;border:1px solid rgba(0,0,0,.14);color:#444;text-decoration:none;line-height:1.6}
.langs a:hover{border-color:#1d4ed8;color:#1d4ed8}
.langs a.cur{background:#1d4ed8;border-color:#1d4ed8;color:#fff}
.langs a.fb{border-style:dashed;color:#6b7280}
.langs a.fb:hover{border-color:#1d4ed8;color:#1d4ed8}
header.site nav{margin-left:0}
.editions{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.editions .edh{width:100%;font-size:13px;color:#6b7280;font-weight:600}
.editions a{display:flex;flex-direction:column;gap:2px;padding:8px 14px;border:1px solid #e5e7eb;border-radius:10px;text-decoration:none;min-width:190px}
.editions a:hover{border-color:#1d4ed8;background:#f8fafc}
.editions a b{font-size:15px;color:#111827;line-height:1.3}
.editions a span{font-size:12.5px;line-height:1.45;color:#6b7280}
.editions a.cur{border-color:#1d4ed8;background:#eff6ff}
@media(max-width:900px){header.site .wrap{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:10px;row-gap:6px}header.site nav{order:3;width:100%;margin-left:0;gap:10px;font-size:13.5px;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:2px}.langs{order:2;margin-left:auto}}