@font-face{font-family:"DM Sans";src:url("/assets/fonts/dm-sans-regular.ttf") format("truetype");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"DM Sans";src:url("/assets/fonts/dm-sans-medium.ttf") format("truetype");font-weight:500 700;font-style:normal;font-display:swap}
@font-face{font-family:Manrope;src:url("/assets/fonts/manrope-regular.ttf") format("truetype");font-weight:400 500;font-style:normal;font-display:swap}
@font-face{font-family:Manrope;src:url("/assets/fonts/manrope-bold.ttf") format("truetype");font-weight:600 800;font-style:normal;font-display:swap}
:root{--ink:#203f35;--forest:#234b3f;--text:#3f4c46;--muted:#66736b;--line:#dce2dc;--paper:#fff;--soft:#f1f5f0;--rose:#eee3e1;--pink:#d7b7b2;--heading:Manrope,sans-serif;--body:"DM Sans",sans-serif}
*{box-sizing:border-box;letter-spacing:0}
html{scroll-behavior:smooth;scroll-padding-top:28px}
body{margin:0;background:var(--paper);color:var(--text);font:400 16px/1.7 var(--body);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
.responsive-image{display:contents}
a{color:inherit;text-underline-offset:5px;text-decoration-thickness:1px}
button,input,summary{font:inherit}
button,a,summary,input{-webkit-tap-highlight-color:transparent}
a:focus-visible,summary:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid #ad5267;outline-offset:5px}
button{cursor:pointer}
h1,h2,h3,h4{font-family:var(--heading);font-weight:500;color:var(--ink);line-height:1.22;margin:0;overflow-wrap:break-word}
p{margin:0 0 20px}
.wrap{width:min(1280px,calc(100% - 112px));margin-inline:auto}
.skip-link{position:fixed;top:-100px;left:20px;background:white;padding:12px 20px;z-index:100}
.skip-link:focus{top:10px}
.preview-bar{padding:7px 22px;background:#f4eced;color:#653742;text-align:center;font-size:11px;line-height:1.6;font-weight:600}
.preview-bar span{font-weight:400;margin-left:12px}
.site-header{background:#fff;position:relative;z-index:10;border-bottom:1px solid #e8ece7}
.header-inner{height:94px;display:flex;align-items:center;gap:35px}
.wordmark{display:inline-flex;align-items:baseline;white-space:nowrap;text-decoration:none;font-family:var(--heading);font-size:29px;font-weight:800;line-height:1.2;color:var(--forest)}
.wordmark span{font-weight:400}
.wordmark small{font-size:15px;font-weight:400;margin-left:2px}
.desktop-nav{display:flex;gap:34px;margin-left:auto;align-items:center}
.desktop-nav a{font-size:13px;text-decoration:none;padding:14px 0;border-bottom:1px solid transparent}
.desktop-nav a:hover,.desktop-nav a[aria-current]{border-color:var(--forest)}
.search-link{width:44px;height:44px;display:grid;place-items:center;border-left:1px solid var(--line);padding-left:12px}
.mobile-nav{display:none}
.hero{position:relative;height:min(660px,calc(100svh - 205px));min-height:490px;background:var(--forest);isolation:isolate}
.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 57%;z-index:-2}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,44,33,.88) 0%,rgba(18,44,33,.72) 29%,rgba(18,44,33,.12) 62%,transparent 100%);z-index:-1}
.hero-inner{height:100%;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;position:relative;padding-block:40px 70px}
.hero h1{font-size:60px;line-height:1.12;color:#fff;max-width:620px;font-weight:400}
.hero-copy{font-size:15px;line-height:1.8;color:#f3f6f2;margin:24px 0 27px;max-width:420px}
.button{display:inline-flex;gap:32px;align-items:center;justify-content:space-between;text-decoration:none;background:var(--forest);color:white;min-height:51px;padding:13px 23px;font-size:13px;font-weight:500;border-radius:2px;border:1px solid transparent;transition:background .18s}
.button-light{background:#fff;color:var(--ink)}
.button:hover{background:#386553}
.button-light:hover{background:#e8efe7}
.button span{font-size:23px;line-height:1}
.guides-section{padding-block:85px 92px}
.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:25px;margin-bottom:36px}
.section-heading h2{font-size:35px;font-weight:400}
.section-heading>p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
.guide-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.guide{text-decoration:none;min-width:0}
.guide-image{position:relative;aspect-ratio:1/1.05;overflow:hidden;background:#f1f0ec}
.guide-image img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.guide:hover .guide-image img{transform:scale(1.035)}
.guide-arrow{position:absolute;right:12px;bottom:12px;background:#fff;color:var(--ink);width:35px;height:35px;display:grid;place-items:center;font-size:21px;border-radius:50%;transition:background .2s}
.guide:hover .guide-arrow{background:#e2ece0}
.guide h3{font-size:19px;font-weight:600;margin-top:20px}
.guide p{font-size:13px;line-height:1.7;margin:8px 0 0;color:var(--muted);max-width:250px}
.material-section{background:var(--rose)}
.material-inner{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center;padding-block:64px}
.material-photo{position:relative;min-width:0}
.material-photo img{width:100%;height:auto;aspect-ratio:1.08;object-fit:cover}
.material-copy{padding-right:35px}
.material-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px 24px}
.material-actions .text-link{gap:14px}
.material-copy h2{font-size:45px;line-height:1.17;margin-bottom:27px;font-weight:400}
.material-copy>p{font-size:14px;line-height:1.85}
.text-link{display:inline-flex;align-items:center;gap:28px;text-decoration:none;border-bottom:1px solid var(--forest);padding-bottom:5px;font-size:13px;font-weight:500;color:var(--forest)}
.text-link span{font-size:22px}
.reading-section{padding-block:87px 93px}
.reading-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.evidence-reading{margin-top:40px}
.brand-directory{margin-top:44px;scroll-margin-top:28px}
.brand-directory>h2{font-size:27px;margin-bottom:24px}
.directory-filters{display:flex;align-items:end;gap:14px;flex-wrap:wrap;padding-block:22px;border-block:1px solid var(--line)}
.directory-filters label{display:grid;gap:8px;font-size:12px;flex:1;min-width:170px}
.directory-filters select{font:inherit;font-size:14px;background:white;color:var(--ink);border:1px solid #93a396;border-radius:2px;padding:13px 10px;width:100%;min-height:51px}
.directory-filters>a{font-size:12px;padding-bottom:13px}
.directory-filters button img{filter:brightness(0) invert(1)}
.directory-count{font-size:12px;color:var(--muted);margin:18px 0 36px}
.brand-region{margin-top:42px}
.brand-region>h3{font-size:22px;border-bottom:2px solid var(--forest);padding-bottom:14px}
.brand-entry{display:grid;grid-template-columns:minmax(120px,1fr) minmax(0,2.2fr);gap:26px;padding-block:30px;border-bottom:1px solid var(--line)}
.brand-entry:last-child{border-bottom:none;padding-bottom:0;}
.brand-entry h4{font-size:22px;font-weight:600;overflow-wrap:anywhere}
.brand-entry header p{font-size:12px;color:var(--muted);margin-top:9px}
.brand-range{font-size:16px;color:var(--ink);margin-bottom:18px}
.brand-entry dl{margin:0 0 22px;display:grid;grid-template-columns:1fr;gap:0}
.brand-entry dt{font-size:11px;font-weight:600;color:var(--ink);margin-bottom:4px}
.brand-entry dd{font-size:14px;line-height:1.8;margin:0 0 14px}
.brand-extra{display:block;font-size:11px;color:var(--muted);margin-top:12px}
.directory-empty{padding-block:20px}
select:focus-visible{outline:3px solid #ad5267;outline-offset:5px}
@media(max-width:520px){.brand-entry{grid-template-columns:1fr;gap:7px}.brand-entry h4{font-size:23px}.brand-entry header p{margin-bottom:12px}.directory-filters label{flex-basis:100%}.brand-directory>h2{font-size:24px}}
.reading-item{border-top:1px solid #8b9d90;padding-top:24px;text-decoration:none;display:flex;align-items:flex-start;flex-direction:column}
.reading-item h3{font-size:23px;line-height:1.35;margin-bottom:18px}
.reading-item p{font-size:14px;line-height:1.75;max-width:335px;color:var(--muted);margin-bottom:25px}
.reading-item>.text-link{margin-top:auto}
.faq-band{background:var(--soft);border-block:1px solid var(--line)}
.faq-inner{display:grid;grid-template-columns:1fr 1.5fr;gap:90px;padding-block:69px 76px}
.faq-inner h2{font-size:38px;font-weight:400;margin-bottom:25px}
.faq-list details{border-bottom:1px solid #c8d3c8}
.faq-list details:first-child{border-top:1px solid #c8d3c8}
.faq-list details:last-child{border-bottom:none}
.faq-list summary{list-style:none;cursor:pointer;position:relative;min-height:69px;padding:22px 37px 22px 0;font-size:15px;line-height:1.6;color:var(--ink);font-weight:500}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:8px;top:18px;font-size:25px;font-weight:400}
.faq-list details[open] summary::after{content:"−"}
.faq-list details p{font-size:14px;line-height:1.8;padding-right:20px;margin:0 0 22px;max-width:670px}
.site-footer{background:#fff}
.footer-main{display:grid;grid-template-columns:1.3fr .8fr .8fr .8fr;gap:40px;padding-block:64px 53px}
.footer-main h2{font:500 12px/1.5 var(--body);margin-bottom:18px}
.footer-main>div>a:not(.wordmark){display:block;font-size:12px;margin-bottom:9px;text-decoration:none}
.footer-main a:not(.wordmark):hover{text-decoration:underline}
.footer-main p{font-size:12px;line-height:1.8;color:var(--muted);margin-top:17px;max-width:280px}
.footer-main .wordmark{font-size:25px}
.footer-main .wordmark small{font-size:12px}
.footer-main .publisher p{margin-top:0;margin-bottom:12px}
.publisher>a span{margin-left:16px}
.footer-bottom{border-top:1px solid var(--line);padding-block:20px;display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted)}
.footer-bottom{flex-wrap:wrap;align-items:center}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom nav a[aria-current]{font-weight:700;color:var(--ink)}
.breadcrumbs{display:flex;gap:12px;align-items:center;padding-top:28px;font-size:11px;color:var(--muted)}
.breadcrumbs a{text-decoration:none}
.article-header{max-width:900px;padding-block:48px 45px}
.article-header h1{font-size:45px;font-weight:400;max-width:850px}
.article-intro{font-size:19px;line-height:1.7;max-width:720px;margin:25px 0}
.article-byline{font-size:12px;color:var(--muted);margin:0}
.article-byline span{padding-inline:8px}
.article-layout{display:grid;grid-template-columns:240px minmax(0,760px);gap:70px;align-items:start;padding-bottom:70px}
.article-sidebar{position:sticky;top:25px}
.article-sidebar h2{font:600 11px/1.5 var(--body);text-transform:uppercase;margin-bottom:15px}
.article-sidebar nav{border-top:1px solid var(--line);padding-top:20px}
.article-sidebar a{display:block;font-size:12px;line-height:1.65;text-decoration:none;margin-bottom:13px;padding-left:12px;border-left:1px solid var(--line)}
.article-sidebar a:hover{border-color:var(--forest);color:var(--forest)}
.quick-answer{background:var(--soft);padding:28px 32px;border-left:2px solid var(--forest)}
.quick-answer>p:last-child{font-size:16px;line-height:1.85;margin:0;color:var(--ink)}
.article-photo{margin:30px 0 40px}
.article-photo img{width:100%;height:360px;object-fit:cover}
.article-photo-portrait img{height:auto;max-height:600px;object-fit:contain}
.guide-image img[src$="duvet-outdoors.jpg"]{object-position:center 65%}
.guide-image img[src$="pillow-illustration.jpg"],.article-photo img[src$="pillow-illustration.jpg"]{object-position:center 80%}
.article-photo figcaption{font-size:10px;color:var(--muted);margin-top:9px}
.prose-section{margin-top:44px;scroll-margin-top:28px}
.prose-section h2{font-size:27px;line-height:1.35;margin-bottom:18px}
.prose-section p,.prose-section li{font-size:16px;line-height:1.9}
.prose-section ul{padding-left:22px}
.prose-section li{margin-block:12px;padding-left:8px}
.table-scroll{overflow-x:auto;margin-block:25px}
table{width:100%;border-collapse:collapse;font-size:13px;min-width:450px}
caption{text-align:left;font-size:12px;margin-bottom:14px;color:var(--muted)}
th,td{text-align:left;padding:15px;border-bottom:1px solid var(--line);vertical-align:top;font-weight:400}
thead th{background:var(--soft);font-weight:600}
tbody th{font-weight:500}
.sources{padding-top:44px;border-top:1px solid var(--line)}
.sources>div{margin-top:22px}
.sources>div{scroll-margin-top:28px;overflow-wrap:anywhere}
.prose-section .section-references{font-size:12px;color:var(--muted);line-height:1.8}
.sources>div>a{font-size:14px;font-weight:500;color:var(--forest)}
.sources>div>p{font-size:12px;line-height:1.8;margin-top:7px;color:var(--muted)}
.editorial-note{background:#f7eeee;border-left:2px solid var(--pink);padding:22px 28px;margin-top:37px;font-size:12px}
.editorial-note p{margin:7px 0 0;font-size:12px;line-height:1.8}
.editorial-note strong{font-weight:500;color:var(--ink)}
.related-guides{border-top:1px solid var(--line);padding-block:44px 65px}
.related-guides h2{font-size:28px}
.related-guides>div{display:flex;flex-wrap:wrap;gap:24px;margin-top:24px}
.related-guides a{font-size:14px;text-decoration:none;border-bottom:1px solid var(--line);padding:12px 0;display:flex;gap:35px;min-width:193.25px;justify-content:space-between}
.error-page,.search-page{padding-block:70px 100px;min-height:60vh}
.error-page h1,.search-page h1{font-size:43px;max-width:800px;margin-bottom:25px}
.search-form{max-width:680px;margin-block:35px}
.search-form label{font-size:13px;display:block;margin-bottom:10px}
.search-form>div{display:flex;border:1px solid #93a396;border-radius:2px;background:#fff}
.search-form input{border:0;background:transparent;padding:15px 18px;width:100%;min-width:0;color:var(--ink);font-size:16px}
.search-form button{width:56px;flex-shrink:0;border:0;background:var(--soft);display:grid;place-items:center}
.search-form button:hover{background:#dde9db}
.search-results{max-width:760px}
.search-results article{padding-block:25px;border-top:1px solid var(--line)}
.search-results h2{font-size:24px;margin-bottom:13px}
.search-results p{font-size:14px;margin:0}
@media(min-width:1600px){.hero-inner{padding-block:35px 65px}.hero{max-height:680px}.hero h1{font-size:64px}}
@media(max-width:1100px){.wrap{width:calc(100% - 72px)}.desktop-nav{gap:22px}.header-inner{gap:24px}.wordmark{font-size:26px}.hero h1{font-size:52px}.material-inner{gap:55px}.material-copy{padding:0}.material-copy h2{font-size:37px}.guide h3{font-size:16px}.guide-grid{gap:16px}.reading-grid{gap:27px}.reading-item h3{font-size:21px}.article-layout{grid-template-columns:200px minmax(0,1fr);gap:40px}.footer-main{gap:28px}.faq-inner{gap:45px}}
@media(max-width:800px){.wrap{width:calc(100% - 40px)}.preview-bar{font-size:10px;padding-inline:15px}.preview-bar span{margin-left:7px}.header-inner{height:76px;gap:0px}.desktop-nav{display:none}.search-link{margin-left:auto;border:0;padding:0;width:40px}.mobile-nav{display:block;}.mobile-nav summary{list-style:none;cursor:pointer;width:44px;height:44px;display:grid;place-items:center}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav summary span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.mobile-nav nav{position:absolute;left:0;right:0;top:100%;background:#fff;padding:20px;border-bottom:1px solid var(--line);box-shadow:0 12px 22px #213e3510}.mobile-nav nav a{display:flex;gap:4px;padding:13px 7px;text-decoration:none;border-bottom:1px solid var(--line);font-size:15px}.hero{min-height:510px;height:calc(100svh - 200px);max-height:620px}.hero h1{font-size:48px}.hero-shade{background:linear-gradient(90deg,rgba(18,44,33,.88),rgba(18,44,33,.6) 45%,rgba(18,44,33,.08))}.hero-photo{object-position:60% center}.guides-section{padding-block:60px}.section-heading h2{font-size:29px}.section-heading>p{font-size:12px}.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 20px}.guide h3{font-size:19px}.guide p{font-size:13px}.guide-image{aspect-ratio:1.12}.material-inner{gap:35px;padding-block:45px}.material-copy h2{font-size:32px}.material-copy>p{font-size:13px}.material-photo img{aspect-ratio:.8}.reading-section{padding-block:60px}.reading-grid{grid-template-columns:1fr;gap:30px}.reading-item{display:grid;grid-template-columns:1fr 1fr;column-gap:28px;align-items:start}.reading-item h3{grid-column:1;grid-row:1/3;font-size:24px}.reading-item p{grid-column:2;font-size:13px}.reading-item>.text-link{grid-column:2;justify-self:start}.faq-inner{grid-template-columns:1fr 1.3fr;gap:30px;padding-block:50px}.faq-inner h2{font-size:30px}.faq-list summary{font-size:14px}.footer-main{grid-template-columns:1fr 1fr;gap:32px;padding-block:44px}.footer-main>div:first-child{grid-column:1/-1}.footer-main .publisher{grid-column:1/-1}.footer-main .publisher p{max-width:450px}.footer-bottom{flex-wrap:wrap;gap:7px}.article-header{padding-block:35px}.article-header h1{font-size:36px}.article-intro{font-size:17px}.article-layout{grid-template-columns:1fr;gap:30px}.article-sidebar{position:static}.article-sidebar nav{border-bottom:1px solid var(--line);padding-bottom:10px}.article-sidebar a{display:inline-block;margin-right:15px;margin-bottom:12px}.article-body{min-width:0}.article-photo img{height:auto;max-height:430px;object-fit:contain;background:#f4f3ef}.prose-section h2{font-size:26px}}
@media(max-width:520px){.preview-bar span{display:block;margin:0}.preview-bar{padding:5px 14px}.header-inner{height:70px}.wordmark{font-size:25px}.hero{min-height:490px;height:calc(100svh - 200px);max-height:590px}.hero-inner{padding-block:34px 70px;justify-content:center}.hero h1{font-size:42px;max-width:340px}.hero-copy{font-size:14px;line-height:1.8;margin-block:22px}.hero-shade{background:linear-gradient(90deg,rgba(18,44,33,.89),rgba(18,44,33,.62) 61%,rgba(18,44,33,.18))}.hero-photo{object-position:56% center}.button{min-height:49px;padding-inline:20px;font-size:12px}.guides-section{padding-block:47px}.section-heading{margin-bottom:27px}.section-heading h2{font-size:27px}.section-heading>p{display:none}.guide-grid{gap:27px 15px}.guide-image{aspect-ratio:.92}.guide-image>img{object-position:center}.guide h3{font-size:16px;margin-top:14px;overflow-wrap:anywhere}.guide p{font-size:12px;line-height:1.65}.guide-arrow{width:29px;height:29px;right:9px;bottom:9px;font-size:18px}.material-inner{grid-template-columns:1fr;gap:30px;padding-block:35px 43px}.material-photo img{aspect-ratio:1.3}.material-copy h2{font-size:36px}.material-copy>p{font-size:14px}.reading-section{padding-block:47px}.reading-item{display:flex;padding-top:20px}.reading-item h3{font-size:24px;margin-bottom:15px}.reading-item p{font-size:14px;max-width:none}.faq-inner{grid-template-columns:1fr;padding-block:43px;gap:28px}.faq-inner h2{font-size:32px}.faq-list summary{font-size:14px;min-height:65px;padding-block:21px}.footer-main{column-gap:20px}.footer-main p{font-size:12px}.footer-bottom{font-size:9px}.breadcrumbs{font-size:10px;padding-top:21px}.article-header h1{font-size:31px;line-height:1.25}.article-header{padding-block:28px}.article-intro{font-size:16px}.article-byline{font-size:10px}.article-sidebar a{font-size:11px}.quick-answer{padding:23px}.quick-answer>p:last-child{font-size:15px}.prose-section h2{font-size:24px}.prose-section p,.prose-section li{font-size:15px}.prose-section .section-references,.sources>div>p{font-size:12px}.editorial-note{padding:20px}.related-guides>div{display:block}.related-guides a{font-size:14px;width:100%;min-width:0}.error-page h1,.search-page h1{font-size:32px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
@media print{.site-header,.site-footer,.preview-bar,.article-sidebar,.related-guides,.skip-link{display:none}.wrap{width:100%}.article-layout{display:block}.article-header{padding-block:15px}.article-header h1{font-size:28px}.article-photo{display:none}.quick-answer{border:1px solid #999;background:none}.article-body a{text-decoration:underline}.prose-section{break-inside:avoid}.faq-list details{display:block}.faq-list details>p{display:block}.hero{height:auto;min-height:0;background:white}.hero-photo,.hero-shade{display:none}.hero h1,.hero-copy{color:black}.hero-inner{padding-block:30px}}