@charset "UTF-8";
/* Editorial visual system: ink / jade / paper */
:root{color-scheme:light;--ink:#172d2c;--ink-soft:#37504b;--paper:#f5f3ec;--white:#fffdf9;--border:#d5d9d1;--muted:#66726e;--accent:#be603b;--accent-deep:#904728;--sage:#dce7dc;--sage-deep:#abc6b7;--gold:#e8c984;--dark:#102625;--max:1380px;--gutter:clamp(22px,4.4vw,76px);--font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;--serif:"Noto Serif CJK SC","Songti SC","SimSun",serif;--ease:cubic-bezier(.2,.7,.2,1)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}::selection{background:var(--gold);color:var(--dark)}a{color:inherit;text-decoration:none}a:hover{color:var(--accent-deep)}img{max-width:100%;height:auto;display:block}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}a,button,input{outline-offset:4px}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}h1,h2,h3,h4,p,blockquote{margin-top:0}h1,h2,h3{letter-spacing:-.035em;line-height:1.24}p{line-height:1.9}ul,ol{padding-left:1.35em}li+li{margin-top:.45em}strong,b{font-weight:700}.site-shell{max-width:1920px;margin:0 auto;min-height:100vh;overflow:clip}.skip-link{position:absolute;z-index:100;top:-120px;left:16px;background:var(--white);padding:12px 24px}.skip-link:focus{top:10px}.masthead{position:relative;z-index:5;background:var(--paper);border-bottom:1px solid var(--border);padding:0 var(--gutter)}.masthead-top{height:98px;display:flex;align-items:center;justify-content:space-between;gap:20px}.wordmark{display:inline-flex;align-items:center;gap:12px;white-space:nowrap;font-size:30px;font-weight:850;letter-spacing:-.08em;color:var(--ink)}.wordmark:hover{color:var(--ink)}.mark-symbol{width:37px;height:37px;display:grid;place-items:center;line-height:1;font-size:36px;color:var(--accent)}.identity-note{margin-left:auto;font-size:12px;letter-spacing:.23em;color:var(--muted);font-weight:650}.primary-nav{border-top:1px solid var(--border);display:flex;gap:clamp(28px,3.4vw,70px);align-items:center;min-height:61px}.primary-nav>a{font-size:14px;color:var(--ink-soft);padding:17px 0;letter-spacing:.04em;position:relative;font-weight:650;transition:color .2s ease}.primary-nav>a::after{content:"";height:3px;background:var(--accent);position:absolute;bottom:0;left:0;right:100%;transition:right .25s var(--ease)}.primary-nav>a:hover,.primary-nav>a[aria-current="page"]{color:var(--accent-deep)}.primary-nav>a:hover::after,.primary-nav>a[aria-current="page"]::after{right:0}.menu-toggle{display:none;border:1px solid var(--border);background:transparent;color:var(--ink);border-radius:2px;padding:9px 13px}.menu-toggle span{padding-left:8px}.cover-grid{display:grid;grid-template-columns:minmax(0,1.11fr) minmax(0,.89fr);min-height:650px;background:var(--sage)}.cover-content{padding:clamp(64px,7vw,116px) clamp(36px,6vw,112px) 52px var(--gutter);display:flex;flex-direction:column;justify-content:center;align-items:flex-start}.section-kicker,.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.17em;font-weight:800;color:var(--accent-deep)}.section-kicker{display:flex;align-items:center;gap:11px;margin-bottom:23px}.dot{background:var(--accent);width:9px;height:9px;border-radius:50%}.cover-content h1{font-size:clamp(49px,5.5vw,92px);line-height:1.13;letter-spacing:-.075em;font-weight:760;max-width:820px;margin-bottom:29px}.cover-content h1 em{font-family:var(--serif);font-style:normal;font-weight:600;display:inline;color:var(--accent-deep)}.lede{font-size:clamp(16px,1.45vw,20px);line-height:1.95;max-width:600px;color:var(--ink-soft);margin-bottom:39px}.cover-actions{display:flex;align-items:center;gap:30px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;gap:23px;justify-content:center;min-height:53px;padding:13px 23px;font-size:14px;font-weight:750;letter-spacing:.025em;transition:background .22s,color .22s,transform .22s,border-color .22s;border:1px solid transparent}.button:hover{transform:translateY(-2px)}.button-dark{background:var(--dark);color:var(--white)}.button-dark:hover{background:var(--accent-deep);color:white}.button-outline{border-color:var(--ink);color:var(--ink)}.button-outline:hover{background:var(--ink);color:white}.text-link,.section-all{font-size:14px;font-weight:800;border-bottom:1px solid currentColor;padding-bottom:5px}.text-link:hover,.section-all:hover{color:var(--accent-deep)}.cover-mini{display:flex;gap:17px;align-items:center;flex-wrap:wrap;margin-top:clamp(48px,6vw,98px);font-size:12px;color:var(--ink-soft)}.cover-mini strong{color:var(--ink);border-right:1px solid #9eafa6;padding-right:18px}.cover-mini span{white-space:nowrap}.cover-mini span::before{content:"✦";color:var(--accent);margin-right:7px}.cover-visual{min-width:0;position:relative;display:flex;flex-direction:column;background:#234840}.cover-image{position:relative;min-height:600px;flex:1;overflow:hidden}.cover-image:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,38,37,.02) 35%,rgba(16,38,37,.75) 100%)}.cover-image img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;object-position:center}.image-overlay{position:absolute;z-index:1;bottom:43px;left:35px;right:35px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:13px;letter-spacing:.2em;font-weight:700}.image-overlay b{white-space:nowrap;font-size:11px;font-weight:500}.visual-note{background:var(--dark);color:#d6e1d9;padding:23px 33px;font-size:13px;letter-spacing:.035em}.section{padding:100px var(--gutter)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:50px;margin-bottom:44px}.section-head>div{max-width:850px}.section-head h2{font-size:clamp(30px,3.15vw,50px);margin:0;font-weight:720}.section-head>p{max-width:400px;color:var(--muted);margin:0;font-size:15px}.section-head .section-kicker{margin-bottom:14px}.news-divider{background:var(--white)}.feature-pair{display:grid;grid-template-columns:1.04fr .96fr;gap:22px;min-height:420px}.feature-lead{background:var(--dark);color:var(--white);padding:clamp(35px,5vw,77px);display:flex;align-items:flex-start;flex-direction:column;min-width:0;transition:background .2s}.feature-lead:hover{background:#28423a;color:#fff}.feature-index{font-size:11px;text-transform:uppercase;letter-spacing:.2em;color:var(--gold);margin-bottom:auto}.feature-lead h3{font-size:clamp(31px,3.7vw,60px);max-width:620px;font-weight:600;line-height:1.33;margin-top:28px;margin-bottom:14px}.feature-lead p{max-width:480px;color:#c9d7d1;font-size:15px;margin-bottom:35px}.feature-link{font-size:14px;font-weight:700;border-bottom:1px solid #d0ddd6;padding-bottom:8px}.feature-secondary{display:grid;grid-template-rows:minmax(180px,1fr) auto;min-width:0;background:var(--sage)}.feature-secondary>img{height:100%;min-height:180px;width:100%;object-fit:cover;aspect-ratio:1.8}.feature-secondary>a{padding:25px 32px 32px;display:block}.feature-secondary h3{font-size:clamp(21px,2vw,30px);max-width:480px;margin:8px 0 10px}.arrow-link{font-size:13px;font-weight:750;white-space:nowrap}.compact-section{background:var(--paper)}.story-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.story-card{background:var(--white);border:1px solid var(--border);padding:32px 30px 25px;min-height:316px;display:flex;flex-direction:column;transition:border-color .2s,transform .25s var(--ease),box-shadow .25s var(--ease)}.story-card:hover{border-color:#94aba2;transform:translateY(-3px);box-shadow:0 15px 30px rgba(18,44,39,.06)}.card-meta,.card-foot{display:flex;justify-content:space-between;gap:12px;align-items:center}.card-meta{margin-bottom:24px}.readtime{font-size:12px;color:var(--muted);white-space:nowrap}.story-card h3{font-size:clamp(20px,1.65vw,25px);font-weight:720;line-height:1.42;margin-bottom:15px}.story-card h3 a{display:block}.story-card p{font-size:14px;color:var(--muted);line-height:1.85;margin-bottom:25px}.card-foot{border-top:1px solid var(--border);padding-top:18px;margin-top:auto}.card-foot>span{font-size:12px;color:var(--muted)}.quote-band{padding:95px var(--gutter);background:#cbdad0;text-align:center;display:flex;flex-direction:column;align-items:center}.quote-symbol{font-family:var(--serif);font-size:95px;line-height:1;color:var(--accent);height:72px}.quote-band blockquote{font-family:var(--serif);font-size:clamp(30px,4.3vw,67px);font-weight:650;line-height:1.4;letter-spacing:.015em;margin-bottom:14px}.quote-band p{color:var(--ink-soft);font-size:17px;margin-bottom:28px}.quote-band a{border-bottom:1px solid var(--ink);font-weight:720;font-size:14px;padding-bottom:7px}.method-section{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(45px,8vw,145px);align-items:center;background:var(--white)}.method-side h2{font-size:clamp(31px,3vw,48px);line-height:1.37;max-width:480px}.method-side>p:not(.section-kicker){color:var(--muted);font-size:16px;max-width:470px;margin-bottom:28px}.method-list{border-top:1px solid var(--border)}.method-list>a{padding:28px 12px;border-bottom:1px solid var(--border);display:grid;grid-template-columns:48px 1fr 24px;gap:22px;align-items:start;transition:background .2s,padding-left .2s}.method-list>a:hover{background:var(--paper);padding-left:21px}.method-list>a>span{font-family:var(--serif);color:var(--accent-deep);font-size:16px}.method-list h3{font-size:22px;margin-bottom:7px}.method-list p{font-size:14px;color:var(--muted);margin-bottom:0}.method-list b{font-size:17px;font-weight:450}.site-footer{padding:0 var(--gutter) 22px;background:var(--dark);color:#d1ddd5}.footer-rule{height:9px;background:var(--accent);margin:0 calc(-1 * var(--gutter))}.footer-columns{padding:72px 0 85px;display:grid;grid-template-columns:1.8fr 1fr 1fr;gap:55px}.footer-brand{color:var(--white);font-size:29px;font-weight:800;letter-spacing:-.06em}.footer-columns p{font-size:14px;color:#adc0b9;max-width:350px;margin-top:14px}.footer-columns h2{font-size:15px;font-weight:800;color:white;letter-spacing:.02em;margin-bottom:21px}.footer-columns>div:not(:first-child)>a{display:block;margin-bottom:12px;font-size:13px;color:#c4d4ce}.footer-columns a:hover{color:var(--gold)!important}.footer-bottom{border-top:1px solid #36534d;display:flex;justify-content:space-between;gap:25px;padding-top:21px;font-size:12px;color:#a9beb4}.breadcrumbs{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted);padding:21px var(--gutter) 0;flex-wrap:wrap}.breadcrumbs a:hover{color:var(--accent-deep)}.breadcrumbs>span[aria-current]{color:var(--ink);max-width:75ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.page-heading{padding:clamp(73px,8vw,125px) var(--gutter) clamp(60px,7vw,100px);max-width:1180px}.page-heading .section-kicker{margin-bottom:21px}.page-heading h1{font-size:clamp(43px,5.6vw,82px);line-height:1.2;font-weight:740;letter-spacing:-.075em;margin-bottom:30px}.page-heading>p:not(.section-kicker){font-size:18px;color:var(--ink-soft);max-width:690px;margin-bottom:0}.topic-intro{background:var(--dark);color:white;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:clamp(35px,6vw,100px);padding:60px var(--gutter)}.topic-intro-art{width:100%;min-width:0}.topic-intro-art img{width:100%;height:auto;aspect-ratio:1.55;object-fit:cover}.number-label{font-family:var(--serif);font-size:12px;color:var(--accent);letter-spacing:.14em;font-weight:800}.topic-intro .number-label{color:var(--gold)}.topic-intro h2{font-size:clamp(31px,3vw,50px);margin:18px 0}.topic-intro p{color:#c8d5cf;max-width:510px;font-size:15px}.topic-links{border-top:1px solid #446159;margin-top:30px}.topic-links a{display:flex;justify-content:space-between;gap:25px;align-items:center;padding:16px 0;border-bottom:1px solid #446159;font-size:14px;color:#e2ebe5}.topic-links a:hover{color:var(--gold)}.topic-bottom{padding-top:0}.reading-head{max-width:1250px}.reading-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:clamp(35px,5vw,85px);padding:0 var(--gutter) 110px}.reading-main{min-width:0}.reading-hero img{width:100%;max-height:385px;object-fit:cover}.reading-checklist{list-style:none;padding:20px 0 0;margin:0}.reading-checklist li{display:grid;grid-template-columns:100px 1fr;gap:24px;padding:48px 0;border-bottom:1px solid var(--border)}.reading-checklist li+li{margin-top:0}.step-count{font-family:var(--serif);font-size:45px;color:var(--accent);line-height:1}.reading-checklist h2{font-size:clamp(25px,2.6vw,35px);margin-bottom:14px}.reading-checklist p{font-size:16px;color:var(--ink-soft);max-width:720px}.reading-checklist a{font-size:14px;font-weight:780;color:var(--accent-deep);border-bottom:1px solid var(--accent);padding-bottom:5px}.reading-aside{min-width:0}.aside-panel{position:sticky;top:25px;padding:29px;background:var(--sage);border:1px solid #c2d0c4}.aside-panel h2{font-size:26px;margin-bottom:22px}.aside-panel ul{list-style:none;padding:0;margin:0 0 30px}.aside-panel li{padding:10px 0;border-bottom:1px solid #b9cabe;font-size:13px;color:var(--ink-soft)}.aside-panel li::before{content:"○";color:var(--accent);margin-right:7px}.aside-panel a{font-size:13px;font-weight:750;border-bottom:1px solid var(--ink)}.article-layout{padding:0 var(--gutter) 110px}.article-heading{max-width:960px;margin:0 auto;padding:clamp(55px,7vw,105px) 0 70px;text-align:center}.article-heading>.section-kicker{justify-content:center}.article-heading h1{font-size:clamp(37px,5vw,72px);font-weight:740;letter-spacing:-.065em;line-height:1.24;margin-bottom:28px}.article-heading>p{font-size:19px;color:var(--ink-soft);max-width:750px;margin:0 auto 25px}.article-meta{display:flex;justify-content:center;gap:16px;align-items:center;color:var(--muted);font-size:12px;letter-spacing:.035em}.article-meta span:nth-child(2){color:var(--accent);font-size:8px}.article-body-grid{max-width:1200px;margin:auto;display:grid;grid-template-columns:minmax(0,780px) minmax(0,260px);gap:clamp(45px,7vw,120px);align-items:start}.prose{font-size:17px;color:var(--ink-soft);min-width:0}.prose h2,.prose h3{color:var(--ink)}.prose h2{font-size:clamp(25px,2.8vw,38px);line-height:1.34;margin:52px 0 22px;scroll-margin-top:35px}.prose h2:first-child{margin-top:0}.prose h3{font-size:23px;margin:32px 0 13px}.prose p{line-height:2.05;margin-bottom:23px}.prose ul,.prose ol{padding-left:1.7em;margin:22px 0 33px}.prose li{padding-left:5px;line-height:1.9;margin:0 0 12px}.prose li::marker{color:var(--accent)}.prose blockquote{padding:23px 29px;border-left:4px solid var(--accent);background:#e7ebe2;font-family:var(--serif);color:var(--ink);font-size:23px;line-height:1.75;margin:38px 0}.prose .steps{counter-reset:step;list-style:none;padding:0}.prose .steps li{counter-increment:step;position:relative;padding:0 0 0 43px;margin:20px 0}.prose .steps li:before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:1px;color:var(--accent-deep);font-weight:800;font-size:13px;letter-spacing:.04em}.table-scroll{width:100%;overflow:auto;margin:30px 0 40px;border:1px solid var(--border)}.prose table{border-collapse:collapse;width:100%;font-size:14px;min-width:480px}.prose th{background:var(--sage);text-align:left;color:var(--ink);font-weight:790}.prose td,.prose th{padding:15px 17px;vertical-align:top;border-bottom:1px solid var(--border);border-right:1px solid var(--border);line-height:1.8}.prose tr:last-child td{border-bottom:0}.prose td:last-child,.prose th:last-child{border-right:0}.prose tbody tr:nth-child(even){background:#f0f0e8}.article-final{background:var(--sage);padding:30px 35px;margin-top:70px}.article-final h2{margin:0 0 15px;font-size:26px}.article-final p{font-size:15px}.article-final a{font-size:14px;color:var(--accent-deep);font-weight:760}.article-rail{border-top:3px solid var(--accent);padding-top:25px}.rail-sticky{position:sticky;top:25px}.rail-sticky>.section-kicker{display:block;margin-bottom:17px}.related-link{display:block;border-top:1px solid var(--border);padding:23px 0}.related-link span{font-size:11px;color:var(--accent-deep);letter-spacing:.08em}.related-link strong{display:block;margin-top:9px;line-height:1.65;font-size:15px;font-weight:690}.back-index{display:inline-block;border-bottom:1px solid var(--ink);font-size:13px;font-weight:750;margin-top:22px}.on-this-page{display:flex;flex-direction:column;gap:12px;background:var(--white);border:1px solid var(--border);padding:22px;margin-bottom:35px}.on-this-page strong{font-size:12px;margin-bottom:6px;color:var(--accent-deep)}.on-this-page a{font-size:12px;color:var(--ink-soft);line-height:1.6}.on-this-page a:hover{color:var(--accent-deep)}.search-heading{max-width:1100px}.search-form{margin-top:38px;max-width:860px}.search-form label{display:block;font-size:13px;font-weight:800;margin-bottom:10px}.search-inline{display:flex;gap:0;min-height:65px}.search-inline input{min-width:0;flex:1;border:1px solid #a6b5ab;border-right:0;border-radius:0;padding:18px 22px;color:var(--ink);background:var(--white);font-size:16px}.search-inline input::placeholder{color:#81908a}.search-inline button{border:1px solid var(--dark);background:var(--dark);color:white;padding:13px 27px;font-weight:750;white-space:nowrap}.search-inline button:hover{background:var(--accent-deep);border-color:var(--accent-deep)}.quick-terms{display:flex;flex-wrap:wrap;gap:14px}.quick-terms a{background:var(--white);border:1px solid var(--border);padding:12px 25px;font-weight:680}.quick-terms a:hover{background:var(--sage);border-color:#93ad9f}.about-grid{padding:65px var(--gutter);background:var(--dark);color:white;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:clamp(35px,7vw,130px)}.about-grid img{width:100%;max-height:460px;object-fit:cover}.about-grid h2{font-size:clamp(30px,3.2vw,49px);margin-bottom:30px}.about-grid p{color:#c7d7cf;font-size:16px;max-width:560px}.about-grid .text-link{color:var(--gold);display:inline-block;margin-top:12px}.info-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:35px}.info-columns>div{padding:30px 0;border-top:1px solid #afbab1}.info-columns h2{font-size:27px;margin:16px 0}.info-columns p{color:var(--muted);font-size:15px}.narrow-heading{max-width:1000px}.standalone-prose{max-width:850px;margin:0 var(--gutter) 110px}.standalone-prose h2{margin-top:38px}.standalone-prose a{color:var(--accent-deep);font-weight:750}.feedback-panel{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(40px,8vw,130px);padding:10px var(--gutter) 120px}.feedback-panel h2{font-size:clamp(25px,2.5vw,35px)}.feedback-panel ol{font-size:17px;color:var(--ink-soft);line-height:2;padding-left:1.5em}.feedback-panel li{margin-bottom:16px}.feedback-panel li::marker{color:var(--accent-deep);font-weight:800}.feedback-note{background:var(--sage);padding:30px 35px;align-self:start}.feedback-note p{color:var(--ink-soft);font-size:15px}.not-found{min-height:560px;padding:100px var(--gutter) 120px;display:flex;align-items:flex-start;justify-content:center;flex-direction:column}.not-found h1{font-size:clamp(36px,5vw,72px);margin:15px 0}.not-found p{color:var(--muted);max-width:600px}.not-found .cover-actions{margin-top:25px}.error-number{font-family:var(--serif);font-size:clamp(90px,13vw,190px);line-height:1;color:#bacabe;font-weight:700}.footer-brand:focus-visible,.footer-columns a:focus-visible{outline-color:var(--gold)}
/* Larger laptop refinements */
@media(min-width:1540px){.cover-grid{min-height:720px}.cover-image{min-height:680px}.cover-content h1{font-size:87px}.story-card{min-height:340px;padding:36px 35px 28px}.section{padding-top:112px;padding-bottom:112px}.article-heading{padding-top:120px}} 
@media(min-width:1200px) and (max-width:1500px){.cover-content h1{font-size:clamp(60px,5.65vw,78px)}.cover-content{padding-right:40px}.cover-image{min-height:610px}.story-card{padding:27px 25px}.story-card h3{font-size:22px}.section{padding-top:85px;padding-bottom:85px}}
@media(max-width:1199px){:root{--gutter:38px}.cover-grid{grid-template-columns:1fr .84fr;min-height:570px}.cover-content{padding:65px 38px}.cover-content h1{font-size:clamp(49px,5vw,66px)}.cover-mini{margin-top:50px}.cover-image{min-height:540px}.section{padding-top:78px;padding-bottom:78px}.story-card{padding:27px 23px;min-height:305px}.story-card h3{font-size:21px}.story-grid{gap:14px}.method-section{gap:50px}.feature-lead{padding:45px}.feature-lead h3{font-size:43px}.article-body-grid{grid-template-columns:minmax(0,1fr) 240px;gap:50px}.footer-columns{gap:25px}}
@media(max-width:980px){:root{--gutter:30px}.cover-grid{grid-template-columns:1fr .76fr}.cover-content{padding:55px 30px}.cover-content h1{font-size:51px}.cover-content .lede{font-size:16px}.cover-visual .cover-image{min-height:560px}.cover-actions{gap:18px}.cover-mini{gap:10px}.cover-mini strong{flex-basis:100%;border:0}.story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.story-card{min-height:290px}.feature-lead h3{font-size:35px}.feature-pair{min-height:390px}.topic-intro{gap:40px}.topic-intro h2{font-size:33px}.reading-layout{grid-template-columns:1fr 225px;gap:32px}.reading-checklist li{grid-template-columns:75px 1fr}.step-count{font-size:35px}.aside-panel{padding:21px}.article-body-grid{grid-template-columns:minmax(0,1fr) 210px;gap:35px}.article-heading{max-width:760px}.article-heading h1{font-size:52px}.footer-columns{grid-template-columns:1.2fr 1fr 1fr}.method-section{grid-template-columns:1fr}.method-side{max-width:720px}.method-list{max-width:none}}
@media(max-width:760px){:root{--gutter:22px}body{font-size:15px}.masthead-top{height:74px}.wordmark{font-size:25px;gap:9px}.mark-symbol{font-size:31px;width:31px;height:31px}.identity-note{font-size:10px;letter-spacing:.08em;margin-left:auto}.menu-toggle{display:inline-flex;align-items:center;margin-left:10px}.primary-nav{display:none;position:absolute;left:0;right:0;top:74px;background:var(--paper);flex-direction:column;align-items:stretch;gap:0;padding:0 var(--gutter) 18px;border-top:1px solid var(--border);box-shadow:0 20px 30px rgba(0,0,0,.09)}.primary-nav.nav-open{display:flex}.primary-nav a{padding:15px 0;border-bottom:1px solid var(--border)}.primary-nav a::after{display:none}.cover-grid{display:flex;flex-direction:column;min-height:0}.cover-content{padding:65px var(--gutter) 45px}.cover-content h1{font-size:clamp(48px,8vw,69px);margin-bottom:23px;line-height:1.16}.cover-content .lede{max-width:670px}.cover-mini{margin-top:45px}.cover-mini strong{flex-basis:auto;border-right:1px solid #9eafa6}.cover-visual{height:360px}.cover-image{min-height:0!important}.cover-image img{position:absolute;object-position:center 42%}.visual-note{padding:13px 22px}.image-overlay{left:22px;right:22px;bottom:25px;font-size:10px}.section{padding:67px var(--gutter)}.section-head{align-items:flex-start;gap:15px;flex-direction:column;margin-bottom:32px}.section-head h2{font-size:clamp(30px,5.2vw,41px)}.section-head>p{max-width:640px}.feature-pair{grid-template-columns:1fr;gap:13px}.feature-lead{min-height:360px;padding:40px 33px}.feature-lead h3{font-size:clamp(33px,6vw,50px);margin-top:30px}.feature-secondary>img{max-height:260px}.feature-secondary>a{padding:25px}.story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.story-card{padding:24px 20px;min-height:290px}.story-card h3{font-size:20px}.story-card p{font-size:13px}.quote-band{padding:75px var(--gutter)}.quote-band blockquote{font-size:clamp(30px,6vw,47px)}.method-section{gap:40px}.footer-columns{grid-template-columns:1.2fr 1fr;gap:35px 20px;padding:55px 0}.footer-columns>div:first-child{grid-column:1/-1}.footer-bottom{flex-wrap:wrap}.page-heading{padding-top:70px;padding-bottom:65px}.page-heading h1{font-size:clamp(43px,7vw,61px)}.page-heading>p:not(.section-kicker){font-size:16px}.topic-intro{grid-template-columns:1fr;padding:35px var(--gutter) 60px;gap:33px}.topic-intro-art img{max-height:350px}.topic-bottom{padding-top:0}.reading-layout{grid-template-columns:1fr;padding-bottom:85px}.reading-aside{grid-row:1}.aside-panel{position:static;padding:26px}.aside-panel ul{display:grid;grid-template-columns:repeat(2,1fr);gap:0 24px}.reading-checklist li{padding:36px 0}.article-layout{padding-bottom:85px}.article-heading{padding:64px 0 49px}.article-heading h1{font-size:clamp(36px,6.7vw,54px)}.article-heading>p{font-size:16px}.article-body-grid{display:flex;flex-direction:column;gap:55px}.article-rail{width:100%}.rail-sticky{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}.rail-sticky>.section-kicker,.on-this-page{grid-column:1/-1}.related-link{border-top:1px solid var(--border)}.back-index{align-self:center;justify-self:start}.about-grid{grid-template-columns:1fr;padding:45px var(--gutter) 65px;gap:35px}.about-grid img{max-height:330px}.info-columns{grid-template-columns:1fr;gap:13px}.info-columns>div{padding:25px 0}.feedback-panel{grid-template-columns:1fr;gap:35px}.standalone-prose{margin-bottom:85px}.not-found{min-height:520px}}
@media(max-width:540px){.identity-note{display:none}.masthead-top{height:68px}.primary-nav{top:68px}.cover-content{padding-top:57px}.cover-content h1{font-size:clamp(41px,10vw,57px);letter-spacing:-.07em}.cover-content .lede{font-size:15px;line-height:1.85}.cover-mini{gap:10px 15px}.cover-mini strong{flex-basis:100%;border:0}.cover-visual{height:295px}.cover-actions{align-items:flex-start;gap:22px}.cover-actions .button{width:100%}.cover-actions .text-link{margin-top:3px}.section{padding-top:60px;padding-bottom:60px}.section-head h2{font-size:32px}.feature-lead{padding:29px;min-height:355px}.feature-lead h3{font-size:35px}.feature-lead p{font-size:14px}.story-grid{grid-template-columns:1fr}.story-card{min-height:270px;padding:27px 25px}.story-card h3{font-size:23px}.story-card p{font-size:14px}.quote-band{padding:65px 22px}.quote-band blockquote{font-size:34px}.quote-band p{font-size:14px}.method-side h2{font-size:34px}.method-list>a{grid-template-columns:35px 1fr 15px;gap:14px;padding:25px 0}.method-list h3{font-size:20px}.method-list p{font-size:13px}.footer-columns{gap:30px 15px}.footer-columns h2{font-size:13px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:6px}.page-heading{padding-top:55px;padding-bottom:48px}.page-heading h1{font-size:clamp(38px,9.5vw,54px)}.topic-intro{padding-top:22px}.reading-head h1{font-size:42px}.aside-panel ul{grid-template-columns:1fr}.reading-checklist li{grid-template-columns:1fr;gap:12px;padding:31px 0}.step-count{font-size:32px}.reading-checklist h2{font-size:27px}.reading-checklist p{font-size:15px}.article-heading h1{font-size:38px}.article-heading>p{font-size:15px}.prose{font-size:15px}.prose h2{font-size:27px;margin-top:40px}.prose p{line-height:1.95}.prose blockquote{font-size:19px;padding:20px 22px}.prose .table-scroll{margin-left:calc(-1 * var(--gutter));margin-right:calc(-1 * var(--gutter));width:calc(100% + 2 * var(--gutter))}.article-final{padding:24px}.article-final h2{font-size:23px}.rail-sticky{display:flex;flex-direction:column}.on-this-page{width:100%}.search-inline{flex-direction:column}.search-inline input{border:1px solid #a6b5ab;min-height:59px}.search-inline button{min-height:55px}.info-columns h2{font-size:25px}.feedback-note{padding:26px}.not-found{min-height:450px;padding-top:65px}.error-number{font-size:100px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}
@media(hover:none){.button:hover,.story-card:hover{transform:none}.primary-nav>a::after{transition:none}}
@media print{body{background:#fff;color:#000}.masthead,.site-footer,.reading-aside,.article-rail,.cover-visual,.cover-actions,.skip-link{display:none!important}.article-layout,.page-heading{padding:10mm 0}.article-body-grid{display:block}.prose{color:#000;font-size:12pt}.prose h2{page-break-after:avoid}.prose p,.prose li{orphans:3;widows:3}.prose table{font-size:10pt}.article-heading{text-align:left}a{color:#000!important;text-decoration:underline}a[href]::after{content:""}}
/* Very narrow screens: keep controls and long source labels reachable without horizontal scrolling. */
@media(max-width:360px){.masthead{padding-left:16px;padding-right:16px}.cover-content,.section,.page-heading,.article-layout,.reading-layout{padding-left:16px;padding-right:16px}.cover-content h1{font-size:39px}.cover-mini{font-size:11px}.feature-lead{padding:23px}.story-card{padding:23px 20px}.footer-columns{grid-template-columns:1fr}.footer-columns>div:first-child{grid-column:auto}.article-heading h1{font-size:33px}.search-inline input{width:100%}.breadcrumbs{padding-left:16px;padding-right:16px}}