:root{--tt-navy:#07182d;--tt-navy-soft:#0d2945;--tt-blue:#0c6f9d;--tt-cyan:#36b5c7;--tt-gold:#cba174;--tt-ink:#142235;--tt-muted:#637286;--tt-line:#dce6ed;--tt-soft:#f3f7fa;--tt-white:#ffffff;--tt-shadow:0 18px 48px rgba(11, 42, 66, 0.09)}
html{scroll-behavior:smooth}
body{margin:0;background:var(--tt-soft);color:var(--tt-ink);font-family:var(--ws-font-sans);line-height:1.7}
.tt-page,.tt-page *{box-sizing:border-box}
.tt-container{width:min(1180px,calc(100% - 48px));margin:0 auto}
@media (min-width:1200px){
body[data-page-mode=about] .tt-section .tt-container{width:min(1360px,calc(100% - 64px))}
}
.tt-hero{position:relative;min-height:690px;padding:178px 0 110px;overflow:hidden;color:var(--tt-white);background:#07182d}
.tt-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(4,15,29,.94) 0,rgba(5,20,36,.83) 42%,rgba(6,24,42,.32) 72%,rgba(6,20,36,.16) 100%),linear-gradient(180deg,rgba(5,18,33,.3) 0,rgba(7,24,45,.12) 58%,rgba(7,24,45,.72) 100%),url("https://cos.medicine.net/worldsleep/site-assets/v1/assets/images/sleep-think-tank-intelligence-hero-20260722.webp");background-position:center center;background-size:cover;background-repeat:no-repeat}
.tt-hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at 82% 34%,rgba(203,161,116,.14),transparent 18%),linear-gradient(180deg,transparent 72%,rgba(6,20,36,.38) 100%)}
.tt-hero__inner{position:relative;z-index:1;max-width:880px}
.tt-hero:not(.tt-hero--compact) .tt-hero__inner{width:min(1280px,calc(100% - 48px));max-width:1280px}
.tt-hero:not(.tt-hero--compact) .tt-hero__subtitle{max-width:1180px}
.tt-hero--compact{min-height:460px;padding:142px 0 68px}
.tt-hero--compact .tt-hero__inner{max-width:980px}
.tt-hero--compact h1{font-size:clamp(3.2rem, 6vw, 5.2rem)}
.tt-hero--compact .tt-hero__subtitle{max-width:900px;margin-top:22px}
.tt-hero--compact .tt-hero__actions{margin-top:28px}
.tt-kicker,.tt-section-kicker{margin:0 0 18px;color:var(--tt-gold);font-size:.78rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase}
.tt-hero h1{margin:0;font-family:var(--ws-font-serif);font-size:clamp(3.4rem, 7vw, 6.4rem);line-height:1.05;letter-spacing:-.045em;text-shadow:0 14px 38px rgba(0,0,0,.38)}
.tt-hero__subtitle{max-width:800px;margin:30px 0 0;color:rgba(255,255,255,.76);font-size:clamp(1.05rem, 2vw, 1.28rem);line-height:1.85}
.tt-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.tt-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 23px;border:1px solid transparent;border-radius:7px;color:#fff;font-weight:700;text-decoration:none;transition:transform .25s ease,background .25s ease,border-color .25s ease}
.tt-button:hover{transform:translateY(-2px)}
.tt-button--primary{background:var(--tt-cyan);color:#062038}
.tt-button--ghost{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.08);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.tt-hero__badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:48px}
.tt-hero__badge{display:inline-flex;align-items:center;gap:8px;padding:8px 13px;border:1px solid rgba(255,255,255,.14);border-radius:999px;background:rgba(255,255,255,.055);color:rgba(255,255,255,.82);font-size:.86rem;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.tt-hero__badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--tt-gold)}
.tt-section{padding:96px 0}
.tt-section--white{background:var(--tt-white)}
.tt-section--library{background:#edf4f7}
.tt-section--navy{color:var(--tt-ink);border-top:1px solid #dce8ed;border-bottom:1px solid #dce8ed;background:linear-gradient(180deg,rgba(246,250,251,.32),rgba(249,251,251,.18) 52%,rgba(250,252,252,.3)),url("https://cos.medicine.net/worldsleep/site-assets/v1/assets/images/sleep-think-tank-weekly-background-20260722.webp") center bottom/cover no-repeat}
.tt-section--research{background:radial-gradient(circle at 86% 12%,rgba(37,99,235,.07),transparent 25%),radial-gradient(circle at 10% 88%,rgba(203,161,116,.09),transparent 23%),linear-gradient(180deg,#faf9f6 0,#f4f8fa 100%)}
.tt-section-header{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;margin-bottom:42px}
.tt-section-title{max-width:760px;margin:0;color:var(--tt-ink);font-family:var(--ws-font-serif);font-size:clamp(2rem, 4vw, 3rem);line-height:1.3}
.tt-section--navy .tt-section-title{color:var(--tt-ink)}
.tt-section-desc{max-width:620px;margin:14px 0 0;color:var(--tt-muted)}
.tt-section--navy .tt-section-desc{color:var(--tt-muted)}
.tt-update-chip{flex:0 0 auto;display:inline-flex;align-items:center;gap:9px;padding:10px 16px;border:1px solid #c9dfe6;border-radius:999px;background:rgba(255,255,255,.78);color:#436175;font-size:.82rem;white-space:nowrap;box-shadow:0 8px 22px rgba(20,62,80,.06)}
.tt-update-chip::before{content:"";width:8px;height:8px;flex:0 0 auto;border-radius:50%;background:var(--tt-cyan);box-shadow:0 0 0 5px rgba(54,181,199,.12)}
.tt-current-issue{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:44px;align-items:end;margin-bottom:30px;padding:42px 44px;overflow:hidden;border:1px solid rgba(91,171,193,.26);border-radius:24px;color:#fff;background:radial-gradient(circle at 88% 18%,rgba(54,181,199,.26),transparent 28%),radial-gradient(circle at 5% 100%,rgba(203,161,116,.14),transparent 25%),linear-gradient(130deg,#07182d 0,#0a2a47 56%,#0d4a65 100%);box-shadow:0 24px 56px rgba(7,24,45,.19)}
#weekly-snapshot{background:linear-gradient(180deg,rgba(247,251,252,.7) 0,rgba(251,253,253,.9) 32%,rgba(244,249,250,.96) 100%),url("https://cos.medicine.net/worldsleep/site-assets/v1/assets/images/sleep-think-tank-weekly-background-20260722.webp") center top/100% auto no-repeat,#f4f9fa}
.tt-current-issue::before{content:"";position:absolute;top:0;left:44px;width:108px;height:4px;border-radius:0 0 999px 999px;background:linear-gradient(90deg,var(--tt-gold),#efd3a8)}
.tt-current-issue::after{content:"";position:absolute;right:-76px;bottom:-112px;width:290px;height:290px;border:1px solid rgba(255,255,255,.11);border-radius:50%;box-shadow:0 0 0 36px rgba(255,255,255,.035),0 0 0 74px rgba(255,255,255,.02)}
.tt-current-issue .tt-document-actions,.tt-current-issue__content{position:relative;z-index:1}
.tt-archive-card__eyebrow,.tt-current-issue__eyebrow{margin:0 0 10px;color:var(--tt-gold);font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
.tt-current-issue h3{margin:0;font-family:var(--ws-font-serif);font-size:clamp(1.55rem, 3vw, 2.15rem);line-height:1.35}
.tt-current-issue__summary{max-width:750px;margin:12px 0 0;color:rgba(255,255,255,.72)}
.tt-current-issue__meta{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:18px;color:rgba(255,255,255,.56);font-size:.78rem}
.tt-current-issue__meta span:empty{display:none}
.tt-document-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tt-document-link{display:inline-flex;min-height:42px;align-items:center;justify-content:center;padding:0 17px;border:1px solid var(--tt-cyan);border-radius:6px;background:var(--tt-cyan);color:#062038;font-size:.84rem;font-weight:800;text-decoration:none;transition:transform .2s ease,background .2s ease}
.tt-document-link:hover{transform:translateY(-2px)}
.tt-document-link--secondary{border-color:#bcd1dc;background:0 0;color:var(--tt-blue)}
.tt-current-issue .tt-document-link--secondary{border-color:rgba(255,255,255,.32);color:#fff}
.tt-document-note{display:inline-block;max-width:250px;color:var(--tt-muted);font-size:.8rem;line-height:1.6}
.tt-current-issue .tt-document-note{color:rgba(255,255,255,.62);text-align:right}
.tt-weekly-overview{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(390px,0.9fr);gap:26px;align-items:stretch;margin-bottom:30px}
.tt-weekly-overview .tt-current-issue,.tt-weekly-overview .tt-metrics{margin-bottom:0}
.tt-weekly-overview .tt-current-issue{min-height:354px;grid-template-columns:1fr;grid-template-rows:1fr auto;align-items:start}
.tt-weekly-overview .tt-document-actions{align-self:end;padding-top:24px}
.tt-weekly-overview .tt-current-issue .tt-document-note{max-width:520px;text-align:left}
.tt-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-bottom:30px}
.tt-weekly-overview .tt-metrics{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:1fr}
.tt-weekly-overview .tt-metric{min-height:0}
.tt-metric{--tt-metric-accent:#0c79a5;--tt-metric-tint:#edf7fa;position:relative;min-height:168px;padding:28px;border:1px solid var(--tt-line);overflow:hidden;border-radius:20px;background:linear-gradient(145deg,#fff 35%,var(--tt-metric-tint) 100%);box-shadow:0 12px 30px rgba(21,54,78,.065);transition:transform .2s ease,box-shadow .2s ease}
.tt-metric:nth-child(2){--tt-metric-accent:#15868f;--tt-metric-tint:#edf8f7}
.tt-metric:nth-child(3){--tt-metric-accent:#b37b33;--tt-metric-tint:#fbf5eb}
.tt-metric:nth-child(4){--tt-metric-accent:#536e91;--tt-metric-tint:#f0f4f9}
.tt-metric::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--tt-metric-accent),transparent 92%)}
.tt-metric::after{content:"";position:absolute;right:-34px;bottom:-44px;width:116px;height:116px;border:1px solid rgba(12,111,157,.08);border-radius:50%;box-shadow:0 0 0 22px rgba(255,255,255,.26)}
.tt-metric:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(21,54,78,.1)}
.tt-metric__value{position:relative;z-index:1;display:block;color:var(--tt-metric-accent);font-family:var(--ws-font-serif);font-size:clamp(1.8rem, 3vw, 2.55rem);font-weight:700;line-height:1.15}
.tt-metric__label{position:relative;z-index:1;display:block;margin-top:12px;color:var(--tt-muted);font-size:.9rem}
.tt-snapshot-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,0.65fr);gap:26px}
.tt-panel{position:relative;padding:34px;overflow:hidden;border:1px solid #d9e6eb;border-radius:24px;background:rgba(255,255,255,.88);box-shadow:0 20px 48px rgba(18,55,76,.085);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.tt-panel--wide{margin-top:26px;background:radial-gradient(circle at 94% 12%,rgba(203,161,116,.1),transparent 24%),rgba(255,255,255,.9)}
.tt-panel--wide .tt-brief-list{grid-template-columns:repeat(2,minmax(0,1fr))}
.tt-panel--wide::before,.tt-snapshot-grid>.tt-panel::before{content:"";position:absolute;top:0;right:0;left:0;height:4px;background:linear-gradient(90deg,var(--tt-blue),var(--tt-cyan),transparent 80%)}
.tt-panel--wide::before,.tt-snapshot-grid>.tt-panel:nth-child(2)::before{background:linear-gradient(90deg,var(--tt-gold),#e7cda8,transparent 80%)}
.tt-panel__top{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-bottom:20px;border-bottom:1px solid var(--tt-line)}
.tt-panel h3{margin:0;color:var(--tt-ink);font-family:var(--ws-font-serif);font-size:1.28rem}
.tt-status{padding:6px 10px;border-radius:999px;background:#e8f6f7;color:#126b77;font-size:.76rem;font-weight:700}
.tt-empty{display:grid;min-height:230px;place-items:center;padding:36px;text-align:center;color:var(--tt-muted)}
.tt-empty strong{display:block;margin-bottom:8px;color:var(--tt-ink);font-size:1.05rem}
.tt-archive-list,.tt-brief-list,.tt-patent-list{display:grid;gap:14px;margin-top:20px}
.tt-archive-card,.tt-brief-card,.tt-patent-card{padding:20px;border:1px solid var(--tt-line);border-radius:14px;background:#fbfdfe}
#weekly-snapshot .tt-brief-card,#weekly-snapshot .tt-patent-card{position:relative;border-color:#dfebef;background:linear-gradient(135deg,#fff 0,#f7fbfc 100%);box-shadow:0 8px 20px rgba(21,54,78,.035);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
#weekly-snapshot .tt-patent-card{border-left:3px solid #52aabd}
#weekly-snapshot .tt-brief-card:hover,#weekly-snapshot .tt-patent-card:hover{transform:translateY(-2px);border-color:#c8dde5;box-shadow:0 14px 28px rgba(21,54,78,.075)}
.tt-collection-block--reports{margin-top:78px;padding-top:78px;border-top:1px solid #d3e0e7}
.tt-archive-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.tt-archive-card{display:flex;min-height:290px;flex-direction:column;padding:28px;background:#fff;box-shadow:0 12px 34px rgba(11,42,66,.06)}
.tt-archive-card h3{margin:0;font-family:var(--ws-font-serif);font-size:1.2rem;line-height:1.45}
.tt-archive-card__summary{margin:12px 0 0;color:var(--tt-muted);font-size:.88rem}
.tt-archive-card__meta{display:flex;flex-wrap:wrap;gap:5px 14px;margin-top:16px;color:#81909e;font-size:.76rem}
.tt-archive-card__tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:15px}
.tt-archive-card__tags span{padding:4px 8px;border-radius:999px;background:#edf5f8;color:#3f6d81;font-size:.72rem}
.tt-archive-card .tt-document-actions{margin-top:auto;padding-top:22px}
.tt-library-empty{display:grid;min-height:190px;place-items:center;padding:34px;border:1px dashed #bfd1da;border-radius:12px;background:rgba(255,255,255,.72);text-align:center}
.tt-library-empty span,.tt-library-empty strong{display:block}
.tt-library-empty strong{margin-bottom:8px;color:var(--tt-ink)}
.tt-library-empty span{max-width:560px;color:var(--tt-muted);font-size:.88rem}
.tt-archive-card h4,.tt-brief-card h4,.tt-patent-card h4{margin:0 0 8px;font-size:1rem}
.tt-brief-card{display:grid;grid-template-columns:104px 1fr;gap:18px;align-items:start}
.tt-brief-type{display:inline-flex;min-height:30px;align-items:center;justify-content:center;padding:4px 9px;border:1px solid #cfe1e8;border-radius:999px;background:#edf6f8;color:var(--tt-blue);font-size:.76rem;font-weight:700}
.tt-brief-card p{margin:0;color:var(--tt-muted);font-size:.88rem}
.tt-patent-meta{display:flex;flex-wrap:wrap;gap:6px 14px;color:var(--tt-muted);font-size:.8rem}
.tt-focus-list{display:grid;gap:10px;margin-top:22px}
.tt-wsic-link{display:inline-flex;margin-top:22px;color:var(--tt-blue);font-size:.86rem;font-weight:700;text-decoration:none}
.tt-wsic-link:hover{text-decoration:underline}
.tt-focus-item{display:grid;grid-template-columns:38px 1fr;align-items:start;gap:12px;padding:15px;border:1px solid #e2ebef;border-radius:13px;background:linear-gradient(135deg,#f9fcfd,#f3f8f9)}
.tt-focus-item:last-child{border-bottom:1px solid #e2ebef}
.tt-focus-index{display:grid;width:34px;height:34px;place-items:center;border-radius:50%;background:#fff7eb;color:#a66e2d;font-family:var(--ws-font-serif);font-weight:700;box-shadow:0 0 0 1px #ead9bd}
.tt-focus-item strong{display:block;margin-bottom:3px}
.tt-focus-item span{color:var(--tt-muted);font-size:.84rem}
.tt-articles-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,350px);gap:26px;align-items:start}
.tt-articles-main{min-width:0}
.tt-articles-main .tt-featured-article{grid-template-columns:minmax(0,0.9fr) minmax(330px,1.1fr)}
.tt-articles-main .tt-featured-article__body{padding:40px 36px}
.tt-articles-main .tt-article-grid{grid-template-columns:1fr}
.tt-classification-panel{position:sticky;top:108px;align-self:start;margin-top:0;padding:28px 24px}
.tt-classification-panel .tt-panel__top{display:block}
.tt-classification-panel .tt-panel__top .tt-section-kicker{margin-bottom:8px}
.tt-classification-panel .tt-panel__top h3{font-size:1.6rem;line-height:1.35}
.tt-classification-panel .tt-panel__top p:last-child{margin:10px 0 0;color:var(--tt-muted);font-size:.84rem;line-height:1.65}
.tt-classification-panel .tt-focus-list{grid-template-columns:1fr;gap:10px;margin-top:22px}
.tt-classification-panel .tt-focus-item{min-height:0;padding:14px 12px}
.tt-category-filter{width:100%;color:inherit;font:inherit;text-align:left;cursor:pointer;transition:border-color .2s ease,background .2s ease,transform .2s ease}
.tt-category-filter:hover{border-color:#b8d4df;transform:translateX(-2px)}
.tt-category-filter.active{border-color:#7fb7c9;background:linear-gradient(135deg,#eef9fa,#e7f4f6);box-shadow:inset 3px 0 0 var(--tt-cyan)}
.tt-category-filter.active .tt-focus-index{background:var(--tt-blue);color:#fff;box-shadow:none}
.tt-category-filter:first-child .tt-focus-index{font-size:.58rem;letter-spacing:-.03em}
.tt-category-filter:focus-visible{outline:3px solid rgba(54,181,199,.28);outline-offset:2px}
.tt-classification-panel>.tt-wsic-link{margin-top:20px}
.tt-domain-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.tt-framework-layout{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(360px,0.94fr);gap:22px;align-items:stretch}
.tt-framework-layout .tt-domain-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.tt-framework-media{position:relative;min-height:520px;margin:0;overflow:hidden;border:1px solid rgba(30,58,138,.14);border-radius:22px;background:#dfe7ec;box-shadow:0 24px 58px rgba(15,35,56,.16)}
.tt-framework-media::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,transparent 48%,rgba(5,21,38,.78) 100%)}
.tt-framework-media img{display:block;width:100%;height:100%;object-fit:cover}
.tt-framework-media figcaption{position:absolute;right:30px;bottom:28px;left:30px;z-index:1;color:#fff}
.tt-framework-media figcaption span,.tt-framework-media figcaption strong{display:block}
.tt-framework-media figcaption span{margin-bottom:8px;color:#e0b982;font-size:.72rem;font-weight:800;letter-spacing:.15em}
.tt-framework-media figcaption strong{max-width:420px;font-family:var(--ws-font-serif);font-size:1.18rem;line-height:1.55}
.tt-domain-card{position:relative;min-height:250px;padding:30px 26px;overflow:hidden;border:1px solid #d9e5ec;border-radius:18px;background:linear-gradient(160deg,#fff 0,#f6fafc 100%);box-shadow:0 10px 28px rgba(15,35,56,.055);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.tt-domain-card:hover{transform:translateY(-3px);border-color:rgba(12,111,157,.28);box-shadow:0 18px 36px rgba(15,35,56,.1)}
.tt-domain-card::after{content:attr(data-code);position:absolute;right:16px;bottom:-17px;color:rgba(10,74,107,.055);font-family:var(--ws-font-serif);font-size:6rem;font-weight:700;line-height:1}
.tt-domain-card h3{margin:22px 0 12px;font-size:1.18rem}
.tt-domain-card p{margin:0;color:var(--tt-muted);font-size:.9rem}
.tt-domain-icon{display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;border-radius:9px;background:#e8f2f7;color:var(--tt-blue);font-size:.82rem;font-weight:800;letter-spacing:.05em}
.tt-method-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:44px}
.tt-method-step{--tt-step-accent:#0c6f9d;position:relative;min-height:230px;padding:30px 26px;overflow:hidden;border:1px solid #d9e5eb;border-radius:18px;background:rgba(255,255,255,.88);box-shadow:0 12px 30px rgba(15,42,60,.065);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.tt-method-step:nth-child(2){--tt-step-accent:#15868f}
.tt-method-step:nth-child(3){--tt-step-accent:#b37b33}
.tt-method-step:nth-child(4){--tt-step-accent:#536e91}
.tt-method-step::before{content:"";position:absolute;top:0;right:0;left:0;height:4px;background:linear-gradient(90deg,var(--tt-step-accent),transparent 88%)}
.tt-method-step:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--tt-step-accent) 28%,#d9e5eb);box-shadow:0 18px 38px rgba(15,42,60,.11)}
.tt-method-number{display:inline-flex;min-width:42px;height:32px;align-items:center;justify-content:center;padding:0 10px;border:1px solid color-mix(in srgb,var(--tt-step-accent) 22%,#dce7ed);border-radius:999px;background:color-mix(in srgb,var(--tt-step-accent) 9%,#fff);color:var(--tt-step-accent);font-family:var(--ws-font-serif);font-size:.82rem;font-weight:700}
.tt-method-step h3{margin:24px 0 12px;color:var(--tt-ink);font-size:1.08rem}
.tt-method-step p{margin:0;color:var(--tt-muted);font-size:.87rem}
.tt-safety-grid{display:grid;grid-template-columns:minmax(0,0.92fr) minmax(0,1.08fr);overflow:hidden;border:1px solid #d8e5ea;border-radius:28px;background:#fff;box-shadow:0 24px 60px rgba(20,45,65,.09)}
.tt-safety-intro{position:relative;min-height:560px;padding:58px 54px 50px;overflow:hidden;background:radial-gradient(circle at 86% 15%,rgba(255,255,255,.95) 0 5px,transparent 6px),radial-gradient(circle at 86% 15%,rgba(18,153,170,.11) 0 94px,transparent 95px),linear-gradient(145deg,#e7f4f5 0,#f5f9f7 62%,#f8f4eb 100%)}
.tt-safety-intro::after{content:"";position:absolute;right:-46px;bottom:-58px;width:190px;height:190px;border:1px solid rgba(12,111,157,.13);border-radius:50%;box-shadow:0 0 0 28px rgba(255,255,255,.22),0 0 0 58px rgba(255,255,255,.16)}
.tt-safety-intro .tt-callout,.tt-safety-intro .tt-section-desc,.tt-safety-intro .tt-section-kicker,.tt-safety-intro .tt-section-title{position:relative;z-index:1}
.tt-safety-intro .tt-section-title{max-width:560px;font-size:clamp(2.35rem, 4vw, 3.35rem)}
.tt-safety-intro .tt-section-desc{max-width:540px;line-height:1.9}
.tt-rule-panel{display:flex;align-items:center;padding:44px 50px;background:linear-gradient(90deg,rgba(237,246,248,.76) 0,rgba(255,255,255,0) 54px),#fff}
.tt-callout{max-width:540px;margin-top:32px;padding:24px 26px 24px 72px;border:1px solid rgba(37,144,164,.2);border-radius:16px;background:rgba(255,255,255,.72);box-shadow:0 12px 30px rgba(38,89,101,.07)}
.tt-callout::before{content:"WSIC";position:absolute;top:24px;left:22px;display:grid;width:36px;height:36px;place-items:center;border-radius:10px;background:#0f7897;color:#fff;font-size:.58rem;font-weight:800;letter-spacing:.04em}
.tt-callout strong{display:block;margin-bottom:8px;color:#07526f;font-size:1.15rem}
.tt-callout p{margin:0;color:#436478}
.tt-rule-list{position:relative;display:grid;width:100%;gap:0}
.tt-rule-list::before{content:"";position:absolute;top:42px;bottom:42px;left:27px;width:1px;background:linear-gradient(180deg,#75bdca,#d8bc91)}
.tt-rule{position:relative;display:grid;grid-template-columns:56px 1fr;gap:20px;align-items:start;padding:28px 0;border-bottom:1px solid #e3ecef}
.tt-rule:first-child{padding-top:12px}
.tt-rule:last-child{padding-bottom:12px;border-bottom:0}
.tt-rule__mark{position:relative;z-index:1;display:grid;width:56px;height:56px;place-items:center;border:5px solid #fff;border-radius:50%;background:linear-gradient(145deg,#e2f3f5,#f7fbfc);color:#087293;font-weight:800;box-shadow:0 0 0 1px #c8dfe6,0 8px 18px rgba(20,91,111,.09)}
.tt-rule h3{margin:4px 0 7px;color:var(--tt-ink);font-size:1.08rem}
.tt-rule p{margin:0;color:var(--tt-muted);font-size:.9rem;line-height:1.75}
.tt-note{grid-column:1/-1;margin:0;padding:18px 28px 18px 54px;border-top:1px solid #dfe9ed;background:#f8fbfc;color:var(--tt-muted);font-size:.8rem;line-height:1.7}
.tt-note::before{content:"i";display:inline-grid;width:20px;height:20px;margin:0 10px 0 -30px;place-items:center;border:1px solid #bdd7e1;border-radius:50%;color:#0c6f9d;font-family:var(--ws-font-serif);font-size:.72rem;font-weight:700;vertical-align:middle}
.tt-note a{color:var(--tt-blue)}
.tt-articles-section{position:relative;overflow:hidden;background:linear-gradient(180deg,rgba(239,248,250,.9),rgba(255,255,255,.98) 42%),url("https://cos.medicine.net/worldsleep/site-assets/v1/assets/images/sleep-think-tank-weekly-background-20260722.webp") center top/cover no-repeat}
.tt-articles-section::before{content:"";position:absolute;width:460px;height:460px;top:-250px;right:-110px;border:1px solid rgba(12,111,157,.12);border-radius:50%}
.tt-articles-section .tt-container{position:relative;z-index:1}
.tt-articles-header{align-items:flex-end;padding-bottom:28px;border-bottom:1px solid rgba(117,151,169,.22)}
.tt-articles-header .tt-section-desc{max-width:760px}
.tt-edition-overview{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(460px,0.85fr);min-height:340px;margin-bottom:64px;overflow:hidden;border-radius:26px;color:#fff;background:radial-gradient(circle at 15% 20%,rgba(54,181,199,.2),transparent 30%),linear-gradient(135deg,#07182d,#0b3857);box-shadow:0 26px 68px rgba(7,24,45,.18)}
.tt-edition-overview__main{display:flex;flex-direction:column;justify-content:center;padding:48px 52px}
.tt-edition-overview__main>p{margin:0 0 16px;color:var(--tt-gold);font-size:.72rem;font-weight:800;letter-spacing:.18em}
.tt-edition-overview__main h3{margin:0;font-family:var(--ws-font-serif);font-size:clamp(2rem, 3.6vw, 3.35rem);line-height:1.22}
#tt-overview-summary{max-width:680px;margin-top:18px;color:rgba(255,255,255,.7);line-height:1.8}
.tt-edition-overview__meta{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:28px;color:rgba(255,255,255,.55);font-size:.82rem}
.tt-edition-overview__meta strong{color:#fff}
.tt-overview-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-left:1px solid rgba(255,255,255,.11);background:rgba(255,255,255,.035)}
.tt-overview-metrics article{display:flex;min-height:170px;justify-content:center;flex-direction:column;padding:28px 30px;border-right:1px solid rgba(255,255,255,.09);border-bottom:1px solid rgba(255,255,255,.09)}
.tt-overview-metrics strong{color:#fff;font-family:var(--ws-font-serif);font-size:clamp(1.75rem, 3vw, 2.6rem);line-height:1.15}
.tt-overview-metrics span{margin-top:10px;color:rgba(255,255,255,.58);font-size:.82rem;line-height:1.55}
.tt-articles-label{display:flex;align-items:center;gap:12px;margin:0 0 18px;color:var(--tt-blue);font-size:.78rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
.tt-articles-label::before{content:"";width:34px;height:2px;background:var(--tt-cyan)}
.tt-featured-article{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(380px,0.9fr);min-height:420px;overflow:hidden;border:1px solid rgba(161,187,201,.45);border-radius:26px;background:rgba(255,255,255,.94);box-shadow:0 28px 72px rgba(11,42,66,.13)}
.tt-article-card__media,.tt-featured-article__media{position:relative;display:block;overflow:hidden;background:radial-gradient(circle at 20% 20%,rgba(54,181,199,.3),transparent 32%),linear-gradient(145deg,#07182d,#0b4264)}
.tt-article-card__media img,.tt-featured-article__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.tt-article-card:hover .tt-article-card__media img,.tt-featured-article:hover .tt-featured-article__media img{transform:scale(1.035)}
.tt-article-card__media.is-placeholder,.tt-featured-article__media.is-placeholder{display:flex;align-items:flex-end;padding:34px;color:rgba(255,255,255,.8);font-size:.76rem;font-weight:800;letter-spacing:.18em;text-decoration:none}
.tt-article-card__media.is-placeholder::after,.tt-featured-article__media.is-placeholder::after{content:"W";position:absolute;top:50%;left:50%;color:rgba(255,255,255,.08);font-family:var(--ws-font-serif);font-size:15rem;line-height:1;transform:translate(-50%,-50%)}
.tt-featured-article__body{display:flex;flex-direction:column;justify-content:center;padding:54px 52px}
.tt-article-card__meta,.tt-featured-article__meta{display:flex;flex-wrap:wrap;gap:8px 16px;color:#748398;font-size:.82rem}
.tt-article-card__meta span:not(:first-child)::before,.tt-featured-article__meta span:not(:first-child)::before{content:"·";margin-right:16px;color:var(--tt-gold)}
.tt-featured-article h3{margin:20px 0 16px;font-family:var(--ws-font-serif);font-size:clamp(2rem, 3.2vw, 3.25rem);line-height:1.2;letter-spacing:-.035em}
.tt-article-card h3 a,.tt-featured-article h3 a{color:var(--tt-ink);text-decoration:none}
.tt-article-card h3 a:hover,.tt-featured-article h3 a:hover{color:var(--tt-blue)}
.tt-featured-article__body>p{margin:0 0 22px;color:var(--tt-muted);font-size:1rem;line-height:1.85}
.tt-featured-article .tt-button{align-self:flex-start;margin-top:26px}
.tt-article-tags{display:flex;flex-wrap:wrap;gap:8px}
.tt-article-tags span{padding:5px 11px;border:1px solid #d4e3ea;border-radius:999px;background:#f5fafb;color:#366078;font-size:.76rem}
.tt-articles-subhead{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:72px 0 22px}
.tt-articles-subhead h3{margin:0;font-family:var(--ws-font-serif);font-size:clamp(1.8rem, 3vw, 2.5rem)}
.tt-articles-subhead span{color:#7a899c;font-size:.86rem}
.tt-article-grid{display:grid;grid-template-columns:1fr;gap:14px}
.tt-article-card{display:grid;grid-template-columns:220px minmax(0,1fr);min-width:0;min-height:184px;overflow:hidden;border:1px solid rgba(161,187,201,.42);border-radius:20px;background:rgba(255,255,255,.94);box-shadow:0 16px 44px rgba(11,42,66,.08);transition:transform .28s ease,box-shadow .28s ease}
.tt-article-card:hover{transform:translateY(-5px);box-shadow:0 24px 58px rgba(11,42,66,.13)}
.tt-article-card__media{height:100%;min-height:184px}
.tt-article-card__date{position:absolute;top:14px;left:14px;z-index:2;padding:6px 10px;border:1px solid rgba(255,255,255,.34);border-radius:999px;background:rgba(7,24,45,.74);color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.03em;line-height:1;box-shadow:0 4px 14px rgba(7,24,45,.16);backdrop-filter:blur(6px)}
.tt-article-card__media.is-placeholder{padding:22px}
.tt-article-card__media.is-placeholder::after{font-size:9rem}
.tt-article-card__body{display:flex;min-width:0;min-height:0;flex:1;flex-direction:column;padding:20px 24px 18px}
.tt-article-card h3{margin:0 0 8px;font-family:var(--ws-font-serif);font-size:clamp(1.28rem, 1.7vw, 1.65rem);line-height:1.38}
.tt-article-card__body>p{display:-webkit-box;margin:0;overflow:hidden;color:var(--tt-muted);font-size:.88rem;line-height:1.65;-webkit-box-orient:vertical;-webkit-line-clamp:2}
.tt-article-card__footer{display:flex;align-items:flex-end;justify-content:flex-end;gap:16px;margin-top:auto;padding-top:14px}
.tt-article-read{display:inline-flex;flex:0 0 auto;align-items:center;gap:8px;color:var(--tt-blue);font-size:.85rem;font-weight:800;text-decoration:none}
.tt-article-read span{font-size:1.15rem;transition:transform .2s ease}
.tt-article-read:hover span{transform:translateX(4px)}
.tt-articles-empty{display:flex;min-height:230px;align-items:center;justify-content:center;gap:24px;padding:40px;border:1px dashed #bdd1dc;border-radius:24px;background:rgba(255,255,255,.7);text-align:left}
.tt-articles-empty>span{display:grid;width:64px;height:64px;place-items:center;border-radius:50%;background:#e6f5f7;color:var(--tt-blue);font-family:var(--ws-font-serif);font-size:1.55rem}
.tt-articles-empty strong{display:block;font-size:1.2rem}
.tt-articles-empty p{margin:5px 0 0;color:var(--tt-muted)}
.tt-category-section{margin-top:100px;padding-top:72px;border-top:1px solid rgba(117,151,169,.24)}
.tt-category-section__header{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:32px}
.tt-category-section__header .tt-section-kicker{margin-bottom:12px}
.tt-category-section__header h2{margin:0;font-family:var(--ws-font-serif);font-size:clamp(2.2rem, 4vw, 3.6rem);line-height:1.2}
.tt-category-section__header>div>span{display:block;max-width:720px;margin-top:14px;color:var(--tt-muted)}
.tt-category-section__header>a{display:inline-flex;flex:0 0 auto;align-items:center;gap:12px;padding-bottom:7px;border-bottom:1px solid #8ab4c7;color:var(--tt-blue);font-size:.88rem;font-weight:800;text-decoration:none}
.tt-category-section__header>a b{font-size:1.1rem}
.tt-category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.tt-category-grid article{position:relative;min-height:210px;padding:30px 28px;overflow:hidden;border:1px solid #d9e6ec;border-radius:18px;background:rgba(255,255,255,.84);box-shadow:0 14px 36px rgba(11,42,66,.06)}
.tt-category-grid article::after{content:attr(data-code)}
.tt-category-grid article>span{display:grid;width:42px;height:34px;place-items:center;border-radius:999px;background:#e6f5f7;color:var(--tt-blue);font-size:.76rem;font-weight:800}
.tt-category-grid h3{margin:22px 0 8px;font-size:1.18rem}
.tt-category-grid p{margin:0;color:var(--tt-muted);font-size:.88rem;line-height:1.7}
@media (max-width:1024px){
.tt-articles-layout{grid-template-columns:1fr}
.tt-classification-panel{position:static}
.tt-classification-panel .tt-focus-list{grid-template-columns:repeat(2,minmax(0,1fr))}
.tt-edition-overview{grid-template-columns:1fr}
.tt-overview-metrics{border-top:1px solid rgba(255,255,255,.11);border-left:0}
.tt-overview-metrics article{min-height:140px}
.tt-category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.tt-featured-article{grid-template-columns:1fr}
.tt-featured-article__media{min-height:360px}
.tt-article-grid{grid-template-columns:1fr}
.tt-archive-grid,.tt-domain-grid,.tt-method-grid,.tt-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
.tt-current-issue{grid-template-columns:1fr;align-items:start}
.tt-current-issue .tt-document-note{text-align:left}
.tt-weekly-overview{grid-template-columns:1fr}
.tt-weekly-overview .tt-current-issue{min-height:320px}
.tt-weekly-overview .tt-metrics{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:auto}
.tt-framework-layout{grid-template-columns:1fr}
.tt-framework-media{min-height:430px}
.tt-method-step:nth-child(3),.tt-method-step:nth-child(4){margin-top:0}
.tt-safety-grid,.tt-snapshot-grid{grid-template-columns:1fr}
.tt-safety-intro{min-height:auto}
}
@media (max-width:767px){
.tt-articles-main .tt-featured-article{grid-template-columns:1fr}
.tt-articles-main .tt-featured-article__body{padding:30px 24px 32px}
.tt-articles-main .tt-article-grid{grid-template-columns:1fr}
.tt-classification-panel{margin-top:0}
.tt-classification-panel .tt-focus-list{grid-template-columns:1fr}
.tt-edition-overview{margin-bottom:48px;border-radius:20px}
.tt-edition-overview__main{padding:34px 24px}
.tt-overview-metrics article{min-height:128px;padding:22px 18px}
.tt-category-section{margin-top:70px;padding-top:52px}
.tt-category-section__header{display:block}
.tt-category-section__header>a{margin-top:22px}
.tt-category-grid{grid-template-columns:1fr}
.tt-category-grid article{min-height:0}
.tt-featured-article{min-height:0;border-radius:20px}
.tt-featured-article__media{min-height:230px}
.tt-featured-article__body{padding:30px 24px 32px}
.tt-featured-article h3{font-size:2rem}
.tt-article-card__meta span:not(:first-child)::before,.tt-featured-article__meta span:not(:first-child)::before{display:none}
.tt-articles-subhead{margin-top:52px}
.tt-article-grid{grid-template-columns:1fr}
.tt-article-card{grid-template-columns:1fr;min-height:0}
.tt-article-card__media{height:180px;min-height:180px}
.tt-article-card__body{min-height:0}
.tt-articles-empty{align-items:flex-start;padding:30px 24px}
.tt-container{width:min(1180px,calc(100% - 32px))}
.tt-hero{min-height:620px;padding:138px 0 76px}
.tt-hero--compact{min-height:500px;padding:120px 0 60px}
.tt-hero:not(.tt-hero--compact) .tt-hero__inner{width:min(1180px,calc(100% - 32px))}
.tt-hero::after{right:-320px}
.tt-hero h1{font-size:clamp(3rem, 16vw, 4.5rem)}
.tt-button,.tt-hero__actions{width:100%}
.tt-hero__badges{margin-top:34px}
.tt-section{padding:68px 0}
.tt-section-header{display:block;margin-bottom:32px}
.tt-update-chip{display:inline-flex;align-items:flex-start;margin-top:18px;white-space:normal}
.tt-archive-grid,.tt-domain-grid,.tt-method-grid,.tt-metrics{grid-template-columns:1fr}
.tt-weekly-overview{gap:18px}
.tt-weekly-overview .tt-current-issue{min-height:auto}
.tt-panel--wide .tt-brief-list,.tt-weekly-overview .tt-metrics{grid-template-columns:1fr}
.tt-current-issue{gap:26px;padding:28px 24px;border-radius:20px}
.tt-current-issue::before{left:24px}
.tt-framework-layout .tt-domain-grid{grid-template-columns:1fr}
.tt-framework-media{min-height:320px;border-radius:16px}
.tt-framework-media figcaption{right:22px;bottom:20px;left:22px}
.tt-current-issue .tt-document-actions,.tt-current-issue .tt-document-link{width:100%}
.tt-collection-block--reports{margin-top:58px;padding-top:58px}
.tt-metric{min-height:auto}
.tt-panel{padding:24px 20px}
.tt-brief-card{grid-template-columns:1fr;gap:10px}
.tt-method-step,.tt-method-step:nth-child(3),.tt-method-step:nth-child(4){margin-top:0;padding:28px 20px;border:1px solid #d9e5eb;border-radius:16px}
.tt-safety-grid{border-radius:18px}
.tt-safety-intro{padding:38px 24px 34px}
.tt-rule-panel{padding:22px 24px 30px}
.tt-rule{grid-template-columns:48px 1fr;gap:14px;padding:22px 0}
.tt-rule-list::before{left:23px}
.tt-rule__mark{width:48px;height:48px}
.tt-callout{padding:68px 20px 22px}
.tt-callout::before{top:20px;left:20px}
.tt-note{padding:18px 20px 18px 48px}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
.tt-button{transition:none}
}