:root{--ink:#222222;--muted:#6B6B6B;--head:#1A1A1A;--navy:#28609A;--navy-dark:#1C4675;--line:#E3E9F0;
--sky:#58A8D6;--orange:#F09A43;--orange-dark:#C8772A;--lime:#BED254;--purple:#7E57A0;--teal:#4FA07F;--paper:#FFFFFF;--wash:#F6F5F2}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Open Sans",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:18px;line-height:1.75}
a{color:#1C4675;text-underline-offset:3px}
a:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:2px;border-radius:4px}
.util{background:var(--navy-dark);color:#DCE7F3;font-size:14px}
.util .in{max-width:1112px;margin:0 auto;padding:7px 24px}
.util a{color:#fff;text-decoration:none;font-weight:700}
.top{background:#fff;position:relative}
.top::after{content:"";position:absolute;left:0;right:0;bottom:-5px;height:5px;background:linear-gradient(90deg,var(--sky) 0 25%,var(--orange) 25% 50%,var(--lime) 50% 75%,var(--purple) 75%)}
.top .in{max-width:1112px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none}
.logo img{width:34px;height:34px}
.wm{font-family:"Roboto Slab",Georgia,serif;font-weight:700;font-size:21px;line-height:1}
.wm .m{color:var(--navy)}.wm .f{color:var(--orange)}.wm .d{color:var(--teal)}
.nav{display:flex;gap:2px;flex-wrap:wrap;margin-left:auto}
.nav a{color:#1C4675;text-decoration:none;font-weight:600;font-size:16px;padding:8px 12px;border-radius:10px}
.nav a:hover{background:var(--wash)}
.nav a[aria-current]{color:var(--orange-dark)}
.btn{display:inline-block;background:var(--orange);color:#1D2B3F;font-weight:700;text-decoration:none;border-radius:12px;padding:11px 20px;box-shadow:0 3px 0 var(--orange-dark);line-height:1.3;font-size:16px}
main{max-width:720px;margin:0 auto;padding:44px 24px 72px}
.crumb{font-size:14px;color:var(--muted);margin:0 0 18px}
.crumb a{color:var(--muted)}
h1{font-family:"Montserrat",sans-serif;font-weight:800;color:var(--head);font-size:clamp(32px,4.8vw,44px);line-height:1.12;letter-spacing:-.01em;margin:0 0 12px}
.meta{color:var(--muted);font-size:15px;margin:0 0 30px;padding-bottom:22px;border-bottom:1px solid var(--line)}
h2,h3{font-family:"Montserrat",sans-serif}
h2{font-size:24px;line-height:1.3;color:var(--head);margin:42px 0 12px;font-weight:700}
h3{font-size:19px;line-height:1.35;color:var(--ink);margin:26px 0 6px;font-weight:700}
p{margin:0 0 16px}
em{font-style:normal;font-weight:700}
.small{font-size:15px;color:var(--muted)}
.fig{margin:6px 0 18px}
.fig svg{display:block;width:100%;max-width:640px;height:auto}
.tbl{overflow-x:auto;margin:6px 0 12px}
table{border-collapse:collapse;width:100%;font-size:15.5px;line-height:1.5}
th,td{text-align:left;vertical-align:top;padding:10px 12px;border-bottom:1px solid var(--line)}
thead th{border-bottom:2px solid var(--head);color:var(--head);font-weight:700}
tbody td:first-child{font-weight:600;color:var(--head)}
.q{border-top:1px dashed #C9C9C9;border-bottom:1px dashed #C9C9C9;padding:16px 0 4px;margin:0 0 -1px}
.q .opts{font-weight:600}
details{margin:0 0 12px}
summary{cursor:pointer;color:#1C4675;font-weight:600;font-size:16px}
details p{margin-top:8px}
.try{margin:44px 0 0;padding:22px 24px;background:var(--wash);border-radius:16px}
.try p{margin:0 0 14px}
.src{margin:28px 0 0;font-size:14.5px;color:var(--muted)}
.src a{color:var(--muted)}
.more{margin-top:52px;border-top:1px solid var(--line);padding-top:22px}
.more h2{font-size:18px;margin:0 0 8px}
.more ul{list-style:none;padding:0;margin:0}
.more li{margin:0 0 6px}
.list{list-style:none;padding:0;margin:8px 0 0}
.list li{padding:20px 0;border-bottom:1px solid var(--line)}
.list li:first-child{border-top:1px solid var(--line)}
.list a{font-size:21px;font-weight:700;color:var(--head);text-decoration:none;line-height:1.35}
.list a:hover{text-decoration:underline}
.list p{margin:6px 0 4px;color:var(--ink);font-size:16.5px}
.list span{font-size:14px;color:var(--muted)}
footer{border-top:1px solid var(--line);padding:24px;font-size:14px;color:var(--muted)}
footer .in{max-width:1112px;margin:0 auto;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
footer a{color:var(--muted)}
@media (max-width:640px){
 body{font-size:17px}
 .util .in{padding:6px 16px}
 .top .in{padding:10px 16px;gap:8px}
 .nav{margin-left:0;width:100%;overflow-x:auto;flex-wrap:nowrap;scrollbar-width:none}
 .nav::-webkit-scrollbar{display:none}
 .nav a{white-space:nowrap;padding:6px 10px;font-size:15px}
 .top .btn{display:none}
 main{padding:28px 16px 56px}
 h2{font-size:22px}
 table{min-width:540px;font-size:14.5px}
 .try{padding:18px}
}