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[hidden]{display:none!important}

.figure{margin:30px 0}.figure img{display:block;width:100%;height:auto}.figure figcaption{font-size:13px;color:#526b70;margin-top:8px}.drake-inputs{display:grid;grid-template-columns:1fr 1fr;gap:0 22px}.drake-inputs small{display:block;font-size:13px;line-height:1.5;margin-top:6px}.drake-number{display:block;font:52px/1.3 Georgia,serif;color:#176a70;margin:15px 0;overflow-wrap:anywhere}.equation{font-size:22px;font-weight:bold;overflow-wrap:anywhere}button.button{border:0;cursor:pointer;font-family:Arial,sans-serif}@media(max-width:600px){.drake-inputs{grid-template-columns:1fr}}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.external-marker{font-size:.8em;white-space:nowrap}.article-jump{display:flex;flex-wrap:wrap;gap:12px 22px;margin:24px 0}.article section{scroll-margin-top:24px}.article p,.card p{overflow-wrap:anywhere}figure{max-width:100%}input,select{min-width:0}button,a.button{min-height:44px}.equation{line-height:1.6}.figure img{cursor:zoom-in}@media(max-width:420px){nav{gap:12px}.brand{font-size:21px}.results .result strong{font-size:30px}}

/* Editorial redesign */
.editorial-hero{min-height:570px;isolation:isolate}.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}.editorial-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,20,30,.95),rgba(8,20,30,.65) 42%,rgba(8,20,30,.03));z-index:-1}.editorial-hero .wrap{display:block;padding-top:85px;padding-bottom:100px}.editorial-hero h1{font-size:clamp(56px,7vw,92px);max-width:650px}.editorial-hero p{max-width:480px;color:#e1e9e7}.hero-credit{position:absolute;bottom:15px;right:25px;font-size:12px;color:#dae7e5}.directory>h1{margin-bottom:14px}.directory>.lead{max-width:720px}.story-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.story-card{background:#fff;border:1px solid #dbe1db;border-radius:6px;overflow:hidden;display:flex;flex-direction:column}.story-card img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;display:block}.story-copy{padding:25px;flex:1;display:flex;flex-direction:column}.story-copy h2{font-size:27px;margin:13px 0}.story-copy h2 a{color:#18343d;text-decoration:none}.story-copy h2 a:hover{text-decoration:underline;color:#176a70}.story-copy p{font-size:16px;margin:0 0 23px}.read{margin-top:auto;font-size:15px;font-weight:bold}.cover-link{display:block}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.tool-grid h2{font-size:32px}.filters{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 8px}.filters button{border:1px solid #a6bab4;background:#fff;color:#24464a;padding:11px 18px;border-radius:30px;font:16px Arial;cursor:pointer}.filters button[aria-pressed="true"]{background:#176a70;color:white;border-color:#176a70}.filters span{font-size:12px;opacity:.8;margin-left:5px}.quick-tools{display:grid;grid-template-columns:1fr 1fr;gap:28px}.quick-tools>a{background:#f8fbf8;padding:30px;border:1px solid #b4c9c0;text-decoration:none;border-radius:6px}.quick-tools h3{color:#173b40;margin:12px 0;font-size:30px}.quick-tools p{color:#3d5960;font-size:17px}.article-cover{margin:30px 0}.article-cover img{width:100%;height:auto;display:block;border-radius:5px;aspect-ratio:16/9;object-fit:cover}.article-cover figcaption{font-size:12px;color:#586c71;margin-top:8px}.related{margin-top:45px;padding-top:22px;border-top:1px solid #c6d4cc}.related li{margin:13px 0}.back-link{padding-top:0}.story-card:hover{border-color:#7aa89b}.sectionhead{margin-bottom:24px}.sectionhead h2{margin:10px 0}.article-cover+ .meta{margin-top:10px} @media(max-width:950px){.story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:650px){.story-grid,.tool-grid,.quick-tools{grid-template-columns:1fr}.editorial-hero{min-height:550px}.editorial-hero .wrap{padding-top:55px;padding-bottom:100px}.editorial-hero:after{background:linear-gradient(90deg,rgba(8,20,30,.92),rgba(8,20,30,.45))}.hero-credit{left:22px;right:22px;font-size:11px}.story-copy{padding:23px}.filters{gap:8px}.filters button{font-size:14px;padding:10px 13px}.tool-grid h2{font-size:28px}.nav nav a{padding:5px 0}.article-cover{margin-left:0;margin-right:0}}

/* Readable diagram text at phone widths */
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/* Fiction section: the same reading comfort, clearly distinguished content */
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