:root{color-scheme:dark;--blue:#004f75;--ink:#fff;--link:#ffff99}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--blue);color:var(--ink);font:16px/1.55 Arial,Helvetica,sans-serif;overflow-wrap:anywhere}a{color:var(--link);text-underline-offset:3px}a:visited{color:#fff}a:hover{color:#fff}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #ffff99;outline-offset:4px}img{max-width:100%;height:auto!important;vertical-align:middle}svg{max-width:100%;height:auto}button,input,textarea,select{font:inherit;max-width:100%}button{cursor:pointer}.skip{position:absolute;left:12px;top:-100px;padding:12px;background:#fff;color:#004f75;z-index:10}.skip:focus{top:12px}
.legacy-header{background:#00364e url('/bkg.jpg') center top/cover;min-height:155px}.header-inner{max-width:1200px;margin:auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:24px}.nav-art{width:550px;flex:0 0 550px}.mast{width:367px;flex:0 1 367px;text-align:center}.mast img{display:block;width:367px;height:auto;margin:auto}.mast .light{width:367px}.text-nav{border-block:1px solid #6a9bac;background:#003d5a}.text-nav ul{list-style:none;max-width:1200px;margin:0 auto;padding:12px 20px;display:flex;gap:10px 23px;flex-wrap:wrap}.text-nav a{font-weight:700;text-decoration:none}.text-nav [aria-current=page]{border-bottom:2px solid #ffff99}.content{max-width:1180px;margin:auto;padding:28px 30px 46px}.content h1{font-family:Georgia,'Times New Roman',serif;font-size:clamp(27px,4vw,39px);line-height:1.2;text-align:center;margin:0 0 20px}.archive-date{text-align:center;font-size:13px;letter-spacing:.02em;margin:0 0 24px;color:#cbdfe7}.archive-date a{color:inherit}table{max-width:100%;border-collapse:collapse;margin-inline:auto}td,th{padding:6px;overflow-wrap:anywhere}td img{max-width:100%}p{margin:1em 0}blockquote{margin:20px 2.5%}font[size='1'],font[size='2'],font[size='-1']{font-size:14px}font[size='3']{font-size:16px}font[size='4']{font-size:19px}font[size='5']{font-size:25px}font[size='6']{font-size:30px}font[size='7']{font-size:36px}hr{border:0;border-top:1px solid #7aa9bd;margin:25px 0}.archive-note{background:#00374f;border-left:3px solid #bfd3dc;padding:14px 18px;margin:22px 0}.site-footer{background:#002f47 url('/bkg1.jpg') center/cover;padding:30px 20px;text-align:center;font-size:14px}.site-footer p{max-width:1000px;margin:12px auto}.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 20px}.section-index{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;padding:15px 0}.section-index a{border:1px solid #6a9bac;padding:8px 15px}.missing-reference{color:#cbdfe7;font-style:italic}.archive-image-caption{font-size:13px;color:#cbdfe7}.form-intro{max-width:800px;margin:20px auto}.draft-form{max-width:900px;margin:20px auto}.draft-form label{display:inline-block;margin:4px 8px 4px 0}.draft-form textarea{width:100%;min-height:130px}.draft-form input:not([type=checkbox]):not([type=radio]),.draft-form textarea,.calculator input{background:#fff;color:#172b35;border:1px solid #7aa9bd;padding:8px;border-radius:2px}.form-actions{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0}.form-actions button,.calculator button{background:#ffffb0;color:#00374f;border:0;padding:11px 17px;border-radius:2px;font-weight:700}.draft-output{width:100%;white-space:pre-wrap;background:#00374f;border:1px solid #7aa9bd;padding:18px}.calculator{max-width:900px;margin:24px auto}.calc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.calc-option{border:1px solid #83aebf;background:#003d5a;padding:16px}.calc-option h2{font-size:19px}.calc-option dl{display:grid;grid-template-columns:1fr auto;gap:10px}.calc-option dd{margin:0;font-weight:bold}.calc-controls{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:20px 0}.calc-error{min-height:1.5em;color:#ffff99}.site-map{columns:3;column-gap:30px;list-style:none;padding:0}.site-map li{break-inside:avoid;margin:12px 0}.site-map small{display:block;color:#cbdfe7}
@media(max-width:1000px){.header-inner{justify-content:center;padding:22px}.nav-art{display:none}.legacy-header{min-height:0}.mast{flex-basis:367px}.text-nav ul{justify-content:center}.content{padding:24px 22px}.site-map{columns:2}}
@media(max-width:620px){.header-inner{padding:18px}.content{padding:24px 16px}.content table,.content tbody,.content tr,.content td,.content th{display:block;width:100%!important;max-width:100%;height:auto!important}.content td,.content th{text-align:inherit}.content table table{margin:0}.content blockquote{margin:15px 0}.text-nav ul{gap:12px 18px;padding:14px 16px;font-size:14px}.calc-grid{grid-template-columns:1fr}.site-map{columns:1}.content center{text-align:center}.content [nowrap]{white-space:normal}.content pre{white-space:pre-wrap}.content img{max-width:100%!important}.site-footer{padding:24px 16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}