:root{--paper:#f6f4ef;--ink:#171717;--muted:#66645f;--line:#d8d5cd;--red:#e23124;--white:#fff;--tint:#e9e6df;--max:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.65}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}a:hover{text-decoration-color:var(--red)}img{display:block;max-width:100%;height:auto}.shell{width:min(calc(100% - 40px),var(--max));margin-inline:auto}.screen-reader-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;z-index:100;left:16px;top:10px;padding:10px 14px;background:var(--ink);color:#fff;transform:translateY(-150%)}.skip-link:focus{transform:none}.site-header{min-height:76px;padding:16px max(20px,calc((100vw - var(--max))/2));display:flex;align-items:center;gap:32px;border-bottom:1px solid var(--line);background:rgba(246,244,239,.96);backdrop-filter:blur(10px);position:sticky;top:0;z-index:20}.brand{font-weight:900;font-size:21px;letter-spacing:-1.15px;text-decoration:none;white-space:nowrap}.brand span{color:var(--red)}.custom-logo{max-width:220px;max-height:48px}.site-header nav{display:flex;gap:24px;margin-left:auto}.site-header nav a{font-size:14px;text-decoration:none}.current-menu-item>a{color:var(--red)}.menu-toggle{display:none;border:0;background:none;font:inherit;font-weight:750}.button{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:11px 20px;border:1px solid var(--ink);background:var(--ink);color:#fff;font:inherit;font-weight:750;text-decoration:none;cursor:pointer}.button:hover{background:var(--red);border-color:var(--red);text-decoration:none}.button-small{min-height:40px;padding:7px 15px;font-size:14px}.text-link{font-weight:750}.hero{padding-block:110px 70px}.eyebrow,.label,.card-meta{margin:0 0 14px;text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800}.eyebrow,.label{color:var(--red)}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.08;letter-spacing:-.045em}h1{max-width:1050px;margin-bottom:30px;font-size:clamp(52px,8vw,110px)}h1 em,h2 em{font-family:Georgia,serif;font-weight:400}.hero-copy,.dek{max-width:760px;color:#484743;font-size:clamp(19px,2.2vw,27px);line-height:1.45}.actions{display:flex;align-items:center;gap:28px;margin-top:36px}.trust-strip{display:grid;grid-template-columns:repeat(3,1fr);margin:80px 0 0;border-block:1px solid var(--line)}.trust-strip div{padding:24px 0}.trust-strip div+div{padding-left:24px;border-left:1px solid var(--line)}.trust-strip dt{font-weight:850;font-size:28px}.trust-strip dd{margin:0;color:var(--muted);font-size:14px}.section{padding-block:90px}.section h2{font-size:clamp(38px,5vw,70px)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:40px;margin-bottom:38px}.section-head>p{max-width:410px;color:var(--muted)}.sphere-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.sphere{min-height:285px;padding:24px;position:relative;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-decoration:none;transition:.2s ease}.sphere:hover,.sphere:focus-visible{background:#fff}.sphere.featured{background:var(--ink);color:#fff}.sphere .number{font:12px ui-monospace,SFMono-Regular,monospace;color:var(--muted)}.sphere.featured .number{color:#aaa}.sphere h3{margin-top:75px;font-size:27px}.sphere p{color:var(--muted);font-size:14px}.sphere.featured p{color:#bbb}.arrow{position:absolute;right:22px;bottom:18px;font-size:22px}.section-dark{background:var(--ink);color:#fff}.section-dark .eyebrow{color:#ff655b}.steps{display:grid;grid-template-columns:repeat(4,1fr);padding:0;margin:60px 0 0;list-style:none;border-top:1px solid #444}.steps li{padding:28px 25px 0 0}.steps li+li{padding-left:25px;border-left:1px solid #444}.steps span{color:#888;font:12px ui-monospace,monospace}.steps h3{margin:50px 0 12px;font-size:27px}.steps p{color:#aaa}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.article-card,.commercial-card{min-height:270px;padding:28px;border:1px solid var(--line);background:rgba(255,255,255,.3)}.article-card{display:flex;flex-direction:column}.card-image{margin:-28px -28px 24px}.card-image img{width:100%;aspect-ratio:3/2;object-fit:cover}.article-card h3,.commercial-card h3{font-size:27px}.article-card p,.commercial-card p{color:var(--muted)}.article-card .evidence{margin-top:auto}.commercial-card{background:#e8e4db}.evidence{display:block;width:max-content;max-width:100%;padding:5px 8px;background:#e5eee8;color:#2a5538;font-size:12px;font-weight:700}.products{background:var(--tint)}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}.product-grid article{min-height:210px;padding:28px}.product-grid article:nth-child(n+2){border-left:1px solid var(--line)}.product-grid article:nth-child(n+4){border-top:1px solid var(--line)}.product-grid h3{margin:45px 0 12px;font-size:30px}.product-grid span{color:var(--red);font-size:12px;font-weight:800;text-transform:uppercase}.product-grid p{color:var(--muted)}.newsletter{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}.newsletter>div>p:last-child{max-width:540px;color:var(--muted)}.signup label:not(.consent){display:block;font-weight:700}.signup>div{display:flex}.signup input[type=email],.search-field{width:100%;min-height:50px;padding:12px;border:1px solid var(--ink);background:#fff;font:inherit}.signup input[type=email]{border-right:0}.consent{display:flex;gap:8px;margin-top:12px;color:var(--muted);font-size:12px;line-height:1.45}.consent input{width:16px;height:16px;flex:0 0 auto}.site-footer{padding-block:60px;background:#101010;color:#fff}.site-footer .brand{color:#fff}.footer-grid{display:grid;grid-template-columns:1fr auto;gap:30px}.site-footer nav{display:flex;gap:20px;flex-wrap:wrap}.site-footer nav a{font-size:13px;color:#bbb}.fine{grid-column:1/-1;padding-top:30px;border-top:1px solid #333;color:#888;font-size:12px}.page-hero,.article-hero{padding-block:60px 55px}.page-hero h1{font-size:clamp(50px,7vw,94px)}.breadcrumbs{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:55px;color:var(--muted);font-size:13px}.breadcrumbs span[aria-current]{max-width:42ch;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.safety-note{display:grid;grid-template-columns:auto 1fr;gap:20px;padding-block:24px;border-block:1px solid var(--red)}.safety-note h2{font-size:18px;letter-spacing:0}.safety-note p{margin:0;max-width:980px}.safety-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--red);color:#fff;font-weight:900}.article-hero{max-width:1040px}.article-hero h1{font-size:clamp(44px,6.5vw,82px)}.byline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:38px 0 20px;padding-block:20px;border-block:1px solid var(--line)}.byline strong,.byline span{display:block}.byline span{color:var(--muted);font-size:13px}.article-cover{margin-bottom:65px}.article-cover img{width:100%;max-height:720px;object-fit:cover}.article-layout{display:grid;grid-template-columns:210px minmax(0,760px);gap:70px;justify-content:center;padding-bottom:80px}.toc{position:sticky;top:110px;align-self:start;display:flex;flex-direction:column;gap:10px;padding-top:8px;font-size:14px}.toc span{color:var(--muted)}.prose{font-size:18px}.prose>*+*{margin-top:1.4em}.prose h2{margin-top:1.8em;font-size:38px}.prose h3{margin-top:1.6em;font-size:25px}.prose li{margin-bottom:8px}.prose a{overflow-wrap:anywhere}.prose blockquote{margin:35px 0;padding:20px 25px;border-left:3px solid var(--red);background:#ebe8e1}.medical-disclaimer,.native-disclosure{margin-bottom:35px;padding:22px 25px;border-left:3px solid var(--red);background:#ebe8e1}.medical-disclaimer p{margin:6px 0 0}.affiliate-card{margin:60px 0;padding:35px;background:var(--ink);color:#fff}.affiliate-card h2{font-size:35px}.affiliate-card p{color:#bbb}.author-box{margin-top:60px;padding-top:30px;border-top:1px solid var(--line)}.standard-page{padding-bottom:90px}.page-content{max-width:760px;margin-inline:auto}.search-form{display:flex;max-width:720px}.search-form label{flex:1}.search-field{border-right:0}.search-large{margin:35px 0}.error-page{min-height:70vh;padding-block:100px}.error-code{float:right;margin:0;color:#dedbd4;font-weight:900;font-size:clamp(120px,25vw,350px);line-height:.65}.error-page h1{font-size:clamp(50px,7vw,90px)}.empty-state{grid-column:1/-1;padding:60px;border:1px solid var(--line);text-align:center}.nav-links{display:flex;justify-content:center;gap:8px;margin-top:45px}.page-numbers{padding:8px 12px;border:1px solid var(--line);text-decoration:none}.page-numbers.current{background:var(--ink);color:#fff}:focus-visible{outline:3px solid var(--red);outline-offset:3px}
@media(max-width:900px){.site-header{flex-wrap:wrap}.menu-toggle{display:block;margin-left:auto}.header-cta{display:none}.site-header nav{display:none;order:3;width:100%;margin:0;padding:12px 0;flex-direction:column}.site-header nav.is-open{display:flex}.sphere-grid{grid-template-columns:repeat(2,1fr)}.steps,.article-grid{grid-template-columns:repeat(2,1fr)}.steps li:nth-child(3){border-left:0}.product-grid{grid-template-columns:repeat(2,1fr)}.product-grid article:nth-child(n){border:0;border-bottom:1px solid var(--line)}.product-grid article:nth-child(even){border-left:1px solid var(--line)}.newsletter{grid-template-columns:1fr;gap:40px}.article-layout{grid-template-columns:1fr}.toc{position:static}}
@media(max-width:620px){.shell{width:min(calc(100% - 28px),var(--max))}.site-header{min-height:64px;padding:12px 14px}.hero{padding-block:70px 45px}h1{font-size:48px}.actions{align-items:flex-start;flex-direction:column}.trust-strip{grid-template-columns:1fr;margin-top:55px}.trust-strip div+div{padding-left:0;border-left:0;border-top:1px solid var(--line)}.section{padding-block:65px}.section-head{align-items:start;flex-direction:column;gap:10px}.sphere-grid,.steps,.article-grid,.product-grid{grid-template-columns:1fr}.sphere{min-height:230px}.steps li+li,.product-grid article:nth-child(even){padding-left:0;border-left:0}.steps li{border-top:1px solid #444}.footer-grid,.byline{grid-template-columns:1fr}.site-footer nav{flex-direction:column}.signup>div,.search-form{flex-direction:column}.signup input[type=email],.search-field{border-right:1px solid var(--ink);border-bottom:0}.article-hero{padding-top:35px}.article-layout{gap:20px}.prose{font-size:17px}.toc{display:none}.error-code{float:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}
.brand .brand-red{color:var(--red)}.brand .brand-black{color:var(--ink)}.site-footer .brand{display:inline-block;padding:3px 7px;background:var(--paper)}
.brand-lockup{display:inline-flex;width:max-content;flex-direction:column;align-items:stretch;line-height:1}.brand-tagline{display:block;width:100%;margin-top:6px;color:var(--muted);font-size:8px;font-weight:750;letter-spacing:.035em;text-align:center;text-transform:uppercase;white-space:nowrap}.site-footer .brand-tagline{color:#aaa}.legal-page{padding-bottom:100px}.legal-page .page-content{max-width:900px}.legal-page .page-content>h2{padding-top:28px;border-top:1px solid var(--line)}.legal-meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:30px 0;padding:20px;border:1px solid var(--line);font-size:14px}.legal-warning{margin:30px 0;padding:20px;border-left:3px solid var(--red);background:var(--tint)}.legal-placeholder{background:#fff2bf;padding:1px 5px}.ad-legal{display:block;margin-top:14px;color:var(--muted);font-size:12px;line-height:1.5}@media(max-width:620px){.legal-meta{grid-template-columns:1fr}.brand-tagline{font-size:8px}}
.sphere{--mx:50%;--my:50%;isolation:isolate;overflow:hidden;transform:translateZ(0);transition:transform .28s cubic-bezier(.2,.7,.2,1),background-color .28s ease,border-color .28s ease,box-shadow .28s ease}.sphere::before{content:"";position:absolute;z-index:-1;inset:0;background:radial-gradient(260px circle at var(--mx) var(--my),rgba(226,49,36,.14),transparent 68%);opacity:0;transition:opacity .28s ease}.sphere::after{content:"";position:absolute;top:-70%;left:-35%;width:30%;height:240%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);transform:rotate(18deg) translateX(-220%);transition:transform .65s cubic-bezier(.2,.7,.2,1);pointer-events:none}.sphere:hover,.sphere:focus-visible{z-index:2;transform:translateY(-7px);border-color:rgba(226,49,36,.55);box-shadow:0 18px 45px rgba(23,23,23,.11)}.sphere:hover::before,.sphere:focus-visible::before{opacity:1}.sphere:hover::after,.sphere:focus-visible::after{transform:rotate(18deg) translateX(520%)}.sphere .number,.sphere .arrow,.sphere h3{transition:color .25s ease,transform .28s cubic-bezier(.2,.7,.2,1)}.sphere:hover .number,.sphere:focus-visible .number{color:var(--red)}.sphere:hover h3,.sphere:focus-visible h3{transform:translateY(-2px)}.sphere:hover .arrow,.sphere:focus-visible .arrow{color:var(--red);transform:translate(4px,-4px) rotate(5deg)}.sphere.featured::before{background:radial-gradient(260px circle at var(--mx) var(--my),rgba(226,49,36,.14),transparent 68%)}@media(prefers-reduced-motion:reduce){.sphere,.sphere::before,.sphere::after,.sphere .number,.sphere .arrow,.sphere h3{transition:none!important;transform:none!important}.sphere::after{display:none}}
.sphere.featured{background:transparent;color:var(--ink)}.sphere.featured .number{color:var(--muted)}.sphere.featured p{color:var(--muted)}.sphere.featured:hover .number,.sphere.featured:focus-visible .number{color:var(--red)}.site-header nav{gap:5px}.site-header nav a{position:relative;padding:8px 13px;border:1px solid transparent;border-radius:999px;transition:color .22s ease,background-color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease}.site-header nav a:hover,.site-header nav a:focus-visible{background:linear-gradient(135deg,rgba(255,255,255,.72),rgba(255,255,255,.34));border-color:rgba(255,255,255,.82);box-shadow:0 8px 24px rgba(23,23,23,.09),inset 0 1px 0 rgba(255,255,255,.9),inset 0 -1px 0 rgba(255,255,255,.35);backdrop-filter:blur(16px) saturate(145%);-webkit-backdrop-filter:blur(16px) saturate(145%);transform:translateY(-1px);text-decoration:none}.site-header nav a:active{transform:translateY(0);box-shadow:inset 0 1px 4px rgba(23,23,23,.1)}
body.content-protected,body.content-protected main,body.content-protected header,body.content-protected footer{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
body.content-protected input,body.content-protected textarea,body.content-protected select,body.content-protected [contenteditable="true"]{-webkit-user-select:text;user-select:text}
body.content-protected img,body.content-protected video,body.content-protected audio{-webkit-user-drag:none;user-drag:none;pointer-events:none}
.copy-protection-notice{position:fixed;z-index:9999;left:50%;bottom:24px;max-width:min(90vw,520px);padding:12px 16px;border:1px solid rgba(255,255,255,.5);border-radius:999px;color:#fff;background:rgba(17,17,17,.86);box-shadow:0 12px 40px rgba(0,0,0,.22);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);font-size:14px;line-height:1.3;text-align:center;transform:translate(-50%,18px);opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease}

/* Responsive system: 320px phones through large foldables and tablets. */
html{overflow-x:hidden;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{min-width:320px;overflow-wrap:break-word}
button,input,select,textarea{max-width:100%;font:inherit}
.site-header{padding-top:max(16px,env(safe-area-inset-top));padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
.site-footer{padding-bottom:max(60px,env(safe-area-inset-bottom))}
.article-grid>*,.product-grid>*,.newsletter>*,.section-head>*,.byline>*{min-width:0}
.prose pre,.prose table{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.prose iframe,.prose video{max-width:100%;height:auto}
.button,.menu-toggle,.site-header nav a,.page-numbers{touch-action:manipulation}

@media(max-width:900px){
  body.menu-open{overflow:hidden}
  .site-header{gap:16px}
  .menu-toggle{min-width:48px;min-height:48px;padding:8px 12px;border:1px solid var(--line);border-radius:999px}
  .site-header nav.is-open{max-height:calc(100dvh - 86px);overflow-y:auto;overscroll-behavior:contain;padding:10px 0 max(18px,env(safe-area-inset-bottom))}
  .site-header nav a{display:flex;align-items:center;min-height:48px;padding:11px 14px}
}

@media(max-width:620px){
  .shell{width:auto;margin-inline:max(14px,env(safe-area-inset-left)) max(14px,env(safe-area-inset-right))}
  .site-header{padding-top:max(10px,env(safe-area-inset-top));padding-bottom:10px;padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right))}
  .brand{font-size:clamp(17px,5.5vw,21px);letter-spacing:-.8px}
  .brand-tagline{font-size:clamp(6.5px,2vw,8px);letter-spacing:.02em}
  h1,.page-hero h1,.article-hero h1,.error-page h1{font-size:clamp(38px,12vw,52px);overflow-wrap:anywhere}
  .section h2{font-size:clamp(34px,10vw,46px)}
  .hero{padding-block:clamp(54px,14vw,70px) 42px}
  .hero-copy,.dek{font-size:clamp(17px,5vw,21px)}
  .actions{width:100%;gap:16px}
  .actions .button{width:100%}
  .trust-strip dt{font-size:24px}
  .sphere{min-height:200px;padding:20px}
  .sphere h3{margin-top:52px;font-size:24px}
  .article-card,.commercial-card{min-height:0;padding:22px}
  .card-image{margin:-22px -22px 20px}
  .article-card h3,.commercial-card h3{font-size:24px}
  .product-grid article{min-height:0;padding:22px}
  .product-grid h3{margin-top:30px}
  .newsletter{gap:28px}
  .signup .button,.search-form .button{width:100%}
  .breadcrumbs{margin-bottom:32px}
  .breadcrumbs span[aria-current]{max-width:24ch}
  .byline{gap:12px}
  .byline>div{padding-bottom:12px;border-bottom:1px solid var(--line)}
  .article-cover{margin-bottom:38px}
  .prose{font-size:16px;line-height:1.7}
  .prose h2{font-size:clamp(28px,8.5vw,36px)}
  .prose h3{font-size:24px}
  .prose ul,.prose ol{padding-left:22px}
  .affiliate-card{margin:42px 0;padding:24px}
  .affiliate-card h2{font-size:30px}
  .safety-note{grid-template-columns:1fr;gap:10px}
  .error-page{padding-block:60px}
  .empty-state{padding:35px 20px}
  .nav-links{flex-wrap:wrap}
  .copy-protection-notice{bottom:max(14px,env(safe-area-inset-bottom));border-radius:18px;font-size:13px}
}

@media(max-width:374px){
  .site-header{gap:8px}
  .menu-toggle{min-width:44px;min-height:44px;font-size:14px}
  h1,.page-hero h1,.article-hero h1,.error-page h1{font-size:clamp(34px,11.5vw,43px)}
  .section h2{font-size:34px}
  .sphere{min-height:185px}
  .eyebrow,.label,.card-meta{letter-spacing:.09em}
}

@media(max-height:500px) and (orientation:landscape) and (max-width:950px){
  .site-header{position:relative;padding-top:8px;padding-bottom:8px}
  .site-header nav.is-open{max-height:none}
  .hero,.page-hero,.article-hero{padding-block:38px 30px}
}

@media(hover:none),(pointer:coarse){
  .sphere:hover{transform:none;box-shadow:none}
  .sphere::after{display:none}
  .site-header nav a,.button{min-height:48px}
}

@media(min-width:621px) and (max-width:1024px){
  .shell{width:min(calc(100% - 48px),var(--max))}
  .sphere-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
.copy-protection-notice.is-visible{opacity:1;transform:translate(-50%,0)}