@import url('/fonts.css');
:root{--paper:#f6f5ef;--ink:#242a23;--muted:#686e61;--line:#dddfd4;--green:#294b38;--sage:#e8ecdf;--rust:#ac583d;--serif:'Instrument Serif',Georgia,serif;--sans:'DM Sans',Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default}img{display:block;max-width:100%;object-fit:cover}button{color:inherit}a,button,input,select,summary{outline-offset:5px}:focus-visible{outline:2px solid var(--rust)}::selection{background:#d8e2c4}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:400}h1,h2,h3,.brand{font-family:var(--serif)}.container{width:min(1200px,calc(100% - 96px));margin-inline:auto}.icon{width:22px;height:22px;flex-shrink:0;vertical-align:middle}.icon-button{width:42px;height:42px;border:0;background:transparent;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;transition:background .2s}.icon-button:hover{background:var(--sage)}.eyebrow{font-size:10px;font-weight:600;letter-spacing:1.7px;text-transform:uppercase}.accent,.brand-period{color:var(--rust)}.muted{color:var(--muted)}.text-link{font-size:12px;display:inline-flex;align-items:center;gap:13px;border-bottom:1px solid transparent;padding-block:5px}.text-link:hover{border-color:currentColor}.text-link .icon{width:19px}.button{display:inline-flex;align-items:center;justify-content:center;gap:25px;padding:14px 23px;font-size:12px;font-weight:500;border:1px solid transparent;border-radius:3px;min-height:48px;transition:background .2s,transform .2s}.button:hover{transform:translateY(-2px)}.button .icon{width:20px}.button-dark{background:var(--green);color:#fff}.button-dark:hover{background:#1c3929}.button-cream{background:var(--paper);color:var(--green)}.topline{border-bottom:1px solid var(--line);font-size:8px;letter-spacing:1.7px;color:#63695f}.topline .container{display:flex;justify-content:space-between;padding-block:9px}.top-dot{color:var(--rust);padding-inline:9px;font-size:6px}.site-header{position:relative;z-index:10;background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{min-height:91px;display:flex;align-items:center;gap:35px}.brand{display:inline-flex;align-items:center;gap:11px;font-size:43px;line-height:1;letter-spacing:-1.7px;flex-shrink:0}.brand-mark{height:35px;width:35px;color:var(--green)}.main-nav{display:flex;justify-content:center;gap:25px;margin-left:auto}.main-nav a{font-size:11px;line-height:42px;position:relative;white-space:nowrap}.main-nav a:after{content:'';position:absolute;height:1px;bottom:5px;left:0;right:100%;background:var(--rust);transition:right .2s}.main-nav a:hover:after,.main-nav a[aria-current]:after{right:0}.header-actions{display:flex;gap:3px;align-items:center}.saved-link{position:relative}.saved-count{position:absolute;right:0;top:0;font-size:9px;border-radius:20px;background:var(--rust);color:#fff;min-width:15px;line-height:15px;text-align:center}.mobile-toggle{display:none}.mobile-nav{padding-block:15px}.mobile-nav a{display:block;padding:9px 0;font-size:14px}.hero{display:grid;grid-template-columns:47% 53%;padding-top:53px;padding-bottom:45px;align-items:center}.hero-copy{padding:12px 45px 14px 0}.hero-eyebrow{color:var(--green);display:flex;align-items:center;gap:9px}.little-sun{font-size:22px;line-height:1}.hero h1{font-size:clamp(57px,5.6vw,80px);letter-spacing:-2.7px;line-height:1.045;margin-top:24px}.hero h1 em{font-weight:400;color:var(--green)}.hero-copy>p{max-width:355px;font-size:13px;color:#6b7066;line-height:1.95;margin-top:25px;margin-bottom:27px}.hero-footnote{display:flex;align-items:center;gap:10px;font-size:8px;letter-spacing:1.2px;color:var(--muted);margin-top:40px}.tiny-line{height:1px;width:25px;background:#aaa996}.hero-visual{position:relative;align-self:stretch;min-height:540px;padding-left:12px}.hero-visual>a{height:100%;position:relative;display:block;overflow:hidden;border-radius:160px 4px 4px 4px}.hero-photo{height:100%;width:100%;position:absolute;inset:0;object-position:50% 55%;transition:transform .7s}.hero-visual>a:hover .hero-photo{transform:scale(1.025)}.hero-visual>a:after{content:'';position:absolute;inset:50% 0 0;background:linear-gradient(transparent,#142115b3);pointer-events:none}.hero-image-caption{position:absolute;z-index:1;bottom:26px;left:29px;right:29px;display:flex;justify-content:space-between;color:#fff;font-size:8px;letter-spacing:1.4px;gap:15px}.hero-image-caption>span:last-child{display:flex;gap:15px;align-items:center}.hero-image-caption .icon{width:18px;height:18px}.curiosity-stamp{position:absolute;left:-31px;top:32px;width:115px;height:115px;border-radius:50%;background:#e9e7cc;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;line-height:1.7;font-size:8px;letter-spacing:1px;transform:rotate(-13deg);border:5px solid var(--paper)}.curiosity-stamp em{font-family:var(--serif);font-size:28px;line-height:1;letter-spacing:0}.curiosity-stamp>span{font-size:22px;line-height:1.2}.image-margin-note{position:absolute;right:-24px;bottom:30px;writing-mode:vertical-rl;font-size:7px;letter-spacing:1.5px;color:var(--muted)}.topic-strip{display:flex;align-items:center;justify-content:space-between;gap:15px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:23px}.topic-strip-label{font-family:var(--serif);font-size:20px;white-space:nowrap}.topic-strip>a{display:flex;align-items:center;gap:8px;font-size:11px}.topic-strip>a>.icon{width:18px;height:18px;color:var(--green)}.topic-arrow{color:#9d9f8f;font-size:15px}.topic-strip>a:hover .topic-arrow{color:var(--rust)}.journal-section{padding-top:57px;padding-bottom:55px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}.section-heading .eyebrow{color:var(--muted);font-size:9px}.section-heading h2{font-size:43px;line-height:1.15;letter-spacing:-1px;margin-top:10px}.section-heading>.text-link{margin-bottom:4px}.story-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.story-image{display:block;aspect-ratio:1.55;overflow:hidden;background:#e2e5d8;border-radius:3px}.story-image img{width:100%;height:100%;transition:transform .5s}.story-card:hover .story-image img{transform:scale(1.035)}.story-meta{display:flex;align-items:center;justify-content:space-between;margin-top:13px;min-height:32px}.story-meta .eyebrow{font-size:9px;letter-spacing:1.4px;color:var(--green)}.story-meta .category-technology{color:#786342}.story-meta .category-science{color:#536c80}.story-meta .category-culture{color:#9a5c45}.story-meta .bookmark{width:32px;height:32px;margin-right:-7px}.bookmark .icon{width:17px;height:17px}.bookmark[aria-pressed=true] .icon{fill:var(--green);stroke:var(--green)}.story-card h3{font-size:28px;line-height:1.14;letter-spacing:-.25px;margin-top:5px}.story-card h3 a:hover{color:var(--green)}.story-card p{font-size:11px;line-height:1.85;color:var(--muted);margin-top:13px}.read-meta{display:flex;gap:9px;align-items:center;font-size:9px;color:var(--muted);margin-top:17px}.meta-dot{color:#a4a798;padding:0 4px}.curious-feature{display:grid;grid-template-columns:1fr 1fr;gap:80px;background:#eceee3;padding:50px 58px;margin-top:4px;margin-bottom:2px;border-radius:3px}.curious-heading>.eyebrow{color:var(--green);font-size:9px}.curious-heading h2{font-size:48px;letter-spacing:-1px;line-height:1.05;margin-top:20px}.curious-heading h2 em{color:var(--green)}.curious-heading p{font-size:11px;line-height:1.9;color:var(--muted);margin-top:21px;margin-bottom:15px}.question-card{background:#d6e2e7;position:relative;padding:28px 30px;display:flex;flex-direction:column;overflow:hidden;min-height:320px;border-radius:110px 3px 3px 3px;transition:background .3s}.question-card:hover{background:#c9dce3}.question-number{align-self:flex-end;font-size:8px;letter-spacing:1.5px;color:#3b5b67}.question-orbit{position:absolute;top:82px;right:28px;color:#fff2b8}.question-orbit .icon{width:83px;height:83px;stroke-width:.6}.question-card h3{font-size:59px;line-height:.98;color:#2c4a55;margin-top:75px}.question-card>div{display:flex;justify-content:space-between;align-items:center;margin-top:28px;font-size:8px;letter-spacing:1.4px;color:#3b5b67}.tool-teaser{display:flex;align-items:center;gap:27px;background:var(--green);color:var(--paper);padding:38px 42px;margin-top:8px;border-radius:3px}.tool-icon{border:1px solid #81927c;width:69px;height:69px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.tool-icon .icon{width:32px;height:32px;stroke-width:1}.tool-teaser .eyebrow{font-size:8px;color:#c1ceb6}.tool-teaser h2{font-size:34px;line-height:1.2;margin-top:8px}.tool-teaser p{font-size:11px;color:#c5cdbc;margin-top:8px}.tool-teaser .button{margin-left:auto;white-space:nowrap}.closing-note{text-align:center;padding:70px 0 75px}.closing-note .eyebrow{color:var(--muted);font-size:8px}.closing-note p{font-family:var(--serif);font-size:41px;line-height:1.2;letter-spacing:-.6px;margin:20px 0 18px}.closing-note em{color:var(--green)}.site-footer{background:#eaece2;border-top:1px solid var(--line);padding:39px 0 22px}.footer-top{display:flex;align-items:center;gap:40px;padding-bottom:33px}.footer-top .brand{font-size:36px}.footer-top .brand-mark{width:28px;height:28px}.footer-top p{font-family:var(--serif);font-size:21px;color:#5d6858}.footer-top>.text-link{margin-left:auto}.footer-bottom{border-top:1px solid #d6dacc;padding-top:21px;display:flex;justify-content:space-between;gap:25px;font-size:9px;color:#676f61}.footer-bottom nav{display:flex;gap:23px}.footer-bottom a:hover{text-decoration:underline}.preview-note{font-size:8px;color:#727b6c;margin-top:13px}.search-dialog{border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:8px;padding:28px;width:min(640px,calc(100% - 32px));max-height:80vh;box-shadow:0 25px 100px #13231833}.search-dialog::backdrop{background:#14221680;backdrop-filter:blur(5px)}.search-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.search-heading h2{font-size:35px}.search-input-wrap{display:flex;align-items:center;gap:12px;border:1px solid #acb5a5;border-radius:4px;padding:10px 15px;background:#fffef9}.search-input-wrap input{width:100%;min-width:0;border:0;background:transparent;padding:6px;font-size:15px;outline:none}.search-dialog .muted{font-size:12px;margin-top:16px}.search-results{margin-top:10px}.search-result{display:block;border-top:1px solid var(--line);padding:15px 3px}.search-result:hover{color:var(--green);background:#e9eddf}.search-result>span{font-size:9px;letter-spacing:1px;text-transform:uppercase;color:var(--muted)}.search-result h3{font-size:25px}.search-result p{font-size:11px;color:var(--muted)}.search-empty{padding:24px 0;font-size:14px}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);z-index:100;max-width:calc(100% - 32px);padding:11px 20px;background:var(--green);color:#fff;font-size:12px;border-radius:4px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}.toast.visible{opacity:1;transform:translate(-50%,0)}.page-intro{padding:60px 0 35px;max-width:800px}.page-intro .eyebrow{color:var(--green)}.page-intro h1{font-size:65px;line-height:1.02;letter-spacing:-1.6px;margin:19px 0}.page-intro>p{font-size:14px;line-height:1.9;color:var(--muted);max-width:620px}.collection{padding-bottom:90px;min-height:60vh}.collection-grid{row-gap:43px}.filter-row{display:flex;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--line);padding-bottom:25px;margin:0 0 30px}.filter-button{padding:7px 14px;border:1px solid var(--line);border-radius:25px;background:transparent;font-size:11px;min-height:38px}.filter-button:hover{border-color:var(--green)}.filter-button.active{background:var(--green);color:#fff;border-color:var(--green)}.filter-button span{margin-left:6px;color:#d0d8c6}.back-link{margin-bottom:26px}.saved-empty{text-align:center;padding:50px 20px 70px}.empty-icon{display:inline-flex;border:1px solid var(--line);border-radius:50%;padding:20px;color:var(--green)}.saved-empty h2{font-size:38px;margin-top:18px}.saved-empty p{color:var(--muted);margin:12px 0 25px;font-size:13px}.saved-story{display:none}.saved-story.is-saved{display:block}.reading-progress{position:fixed;top:0;left:0;height:3px;background:var(--rust);z-index:30;width:0}.breadcrumbs{display:flex;gap:12px;font-size:10px;color:var(--muted);padding-top:25px}.breadcrumbs a:hover{text-decoration:underline}.article-heading{max-width:840px;margin:45px auto 28px}.article-heading>.eyebrow{color:var(--green)}.article-heading h1{font-size:73px;line-height:1.025;letter-spacing:-1.7px;margin-top:17px}.article-deck{font-size:17px;color:var(--muted);line-height:1.8;margin-top:22px;max-width:740px}.article-byline{display:flex;align-items:center;justify-content:space-between;margin-top:25px;border-top:1px solid var(--line);padding-top:16px;gap:15px}.article-byline>span{font-size:10px;color:var(--muted)}.article-byline>div{display:flex}.article-byline a{text-decoration:underline;text-underline-offset:3px}.article-figure{margin:0}.article-figure img{width:100%;height:450px;object-position:center;border-radius:4px}.article-figure figcaption{font-size:9px;text-align:right;color:var(--muted);padding:9px 0}.article-figure figcaption a{text-decoration:underline}.article-layout{display:grid;grid-template-columns:190px minmax(0,680px);gap:70px;justify-content:center;padding:48px 0 15px}.article-toc{align-self:start;position:sticky;top:30px}.article-toc .eyebrow{font-size:8px;color:var(--muted);display:block;margin-bottom:18px}.article-toc>a{display:block;font-size:11px;color:var(--muted);padding:9px 0;border-bottom:1px solid var(--line);line-height:1.6}.article-toc>a:hover{color:var(--green)}.article-body>section{scroll-margin-top:25px}.article-body h2{font-size:36px;line-height:1.15;letter-spacing:-.3px;margin:32px 0 15px}.article-body p,.prose p{font-size:15px;line-height:1.95;color:#50594b;margin-bottom:20px}.takeaway{padding:24px 27px;background:var(--sage);border-left:2px solid var(--green);margin-bottom:30px}.takeaway>.eyebrow{font-size:9px;color:var(--green)}.takeaway p{font-size:16px;margin:10px 0 0;line-height:1.8}.article-body .editor-note{font-size:11px;color:var(--muted);line-height:1.8}.sources{border-top:1px solid var(--line);margin-top:40px;padding-top:30px}.sources .eyebrow{color:var(--muted)}.sources h2{font-size:30px;margin-top:10px}.sources ul{padding-left:18px}.sources li{font-size:13px;margin-bottom:12px;line-height:1.7}.sources a,.prose a:not(.button){text-decoration:underline;text-underline-offset:3px;color:var(--green)}.info-page{padding-bottom:80px}.info-page .page-intro{max-width:900px}.info-page .prose{max-width:740px}.prose h2{font-size:32px;line-height:1.2;margin:35px 0 15px}.prose .lead{font-size:21px}.tool-page{padding-bottom:80px}.calculator-layout{display:grid;grid-template-columns:1.55fr 1fr;gap:45px;align-items:start}.calculator{padding:30px;background:#fffdf7;border:1px solid var(--line);border-radius:5px}.calculator-title{display:flex;gap:13px;align-items:center;color:var(--green);margin-bottom:25px}.calculator-title h2{font-size:30px}.calculator-title .icon{width:28px;height:28px}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.input-grid label{font-size:12px;font-weight:500}.input-grid input,.input-grid select{display:block;width:100%;margin-top:7px;padding:12px;border:1px solid #ced4c5;border-radius:3px;background:#fafbf6;color:var(--ink);font-size:14px;min-width:0}.input-note{font-size:11px;color:var(--muted);margin-top:20px}.calculator-actions{display:flex;align-items:center;gap:25px;margin-top:24px}.text-button{background:none;border:0;padding:8px 0;text-decoration:underline;text-underline-offset:4px;font-size:12px}.calc-result{border-top:1px solid var(--line);padding-top:24px;margin-top:25px}.calc-result strong{font-size:53px;font-family:var(--serif);font-weight:400;color:var(--green);line-height:1.1}.calc-result p{font-size:12px;color:var(--muted);margin-top:8px}#calc-error{font-size:12px;color:#9a351e;padding-top:15px}.calculator-aside{padding:0 25px}.pot-drawing{max-width:230px;margin:0 auto}.calculator-aside h3{font-size:37px;line-height:1.1;margin-top:10px}.calculator-aside p{color:var(--muted);font-size:12px;line-height:1.9;margin:18px 0}.tool-faq{max-width:780px;margin-top:50px}.tool-faq details{border-bottom:1px solid var(--line);padding:15px 0}.tool-faq summary{cursor:pointer;font-size:14px;line-height:1.6;padding:5px 0}.tool-faq details p{font-size:13px;margin:15px 0 0}.empty-page{min-height:65vh;padding-top:70px;padding-bottom:70px}.empty-page .eyebrow{color:var(--green)}.empty-page h1{font-size:75px;line-height:1.05;letter-spacing:-1px;margin:20px 0}.empty-page p{color:var(--muted);max-width:490px;margin:20px 0 30px}.ad-slot{border:1px dashed #c3c7b8;background:#efefe6;min-height:92px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;color:#72776b;text-align:center;padding:20px}.ad-slot .eyebrow{font-size:8px;letter-spacing:1.8px}.ad-slot a{font-family:var(--serif);font-size:23px;color:#56644d}.ad-slot p{font-size:10px}.ad-slot-inline{margin-block:32px}.advertise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:25px 0 35px}.advertise-card{border:1px solid var(--line);padding:25px;border-radius:3px}.advertise-card h2{font-size:30px;line-height:1.1}.advertise-card p{font-size:12px;line-height:1.9;color:var(--muted);margin-top:15px}.advertise-form{background:var(--sage);padding:30px;max-width:780px;border-radius:4px}.advertise-form h2{font-size:35px;margin-bottom:15px}.advertise-form label{display:block;font-size:12px;margin-bottom:16px}.advertise-form input,.advertise-form textarea{display:block;width:100%;padding:12px;border:1px solid #c7cdbd;background:#fffef8;margin-top:6px;border-radius:3px}.advertise-form textarea{min-height:120px;resize:vertical}.advertise-form .button{margin-top:5px}.advertise-form>p{font-size:11px;color:var(--muted);margin-top:15px}.ad-inquiry-output{white-space:pre-wrap;font-size:12px;line-height:1.8;border-top:1px solid #c7cdbd;padding-top:20px;margin-top:20px;overflow-wrap:anywhere}.skip-link{position:fixed;top:-80px;left:20px;z-index:100;background:var(--green);color:#fff;padding:10px 20px}.skip-link:focus{top:10px}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}
@media(min-width:1450px){.hero{padding-top:65px;padding-bottom:55px}.hero-visual{min-height:580px}.hero h1{font-size:85px}}
@media(max-width:1150px){.container{width:calc(100% - 64px)}.header-inner{gap:20px}.main-nav{gap:16px}.main-nav a{font-size:10px}.brand{font-size:38px}.hero h1{font-size:65px}.hero-visual{min-height:505px}.hero-copy{padding-right:30px}.hero-footnote{font-size:7px}.topic-strip{gap:9px}.topic-strip-label{font-size:18px}.topic-strip>a{font-size:10px;gap:5px}.topic-strip>a>.icon{width:16px}.topic-arrow{display:none}.curious-feature{gap:45px;padding:40px}.tool-teaser{padding:30px;gap:22px}.tool-teaser h2{font-size:30px}.tool-icon{width:55px;height:55px}.article-layout{grid-template-columns:160px minmax(0,650px);gap:40px}}
@media(max-width:950px){.main-nav{display:none}.header-actions{margin-left:auto}.mobile-toggle{display:inline-flex}.header-inner{min-height:80px}.hero{grid-template-columns:48% 52%;padding-top:42px}.hero h1{font-size:57px;letter-spacing:-1.7px}.hero-copy>p{font-size:12px;line-height:1.85}.hero-visual{min-height:475px}.curiosity-stamp{width:95px;height:95px;left:-22px;font-size:7px}.curiosity-stamp em{font-size:25px}.hero-image-caption{left:20px;right:20px;font-size:7px}.hero-image-caption>span:first-child{display:none}.hero-footnote{font-size:6px;gap:6px}.topic-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:18px 25px;padding-block:20px}.topic-strip-label{grid-column:1 / -1}.topic-strip>a{font-size:12px}.topic-arrow{display:inline;margin-left:auto}.story-grid{gap:20px}.story-card h3{font-size:25px}.curious-feature{gap:30px}.curious-heading h2{font-size:43px}.question-card{padding:24px}.question-card h3{font-size:53px}.tool-teaser{flex-wrap:wrap}.tool-teaser .button{margin-left:82px}.footer-top{gap:25px}.footer-top p{font-size:18px}.article-heading h1{font-size:65px}.article-layout{display:block;max-width:700px;margin-inline:auto}.article-toc{display:none}.calculator-layout{grid-template-columns:1.5fr 1fr;gap:20px}.calculator-aside{padding:0 10px}.calculator-aside h3{font-size:32px}.calculator{padding:24px}.input-grid{gap:15px}.advertise-grid{grid-template-columns:1fr}.advertise-card{padding:22px}.advertise-card h2{font-size:27px}}
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