/* ============================================
   YuSleep — yusleep-en.com
   "Sleep Science" design system — clinical-calm, data-forward
   Structurally distinct from com-yusleep.com: sharper corners,
   left-accent data panels, horizontal timeline signature element,
   different type pairing and button shape.
   Sans-serif only. White/black text only. 18px+ body.
   ============================================ */

:root{
  --navy-deep:#1B3A4B;
  --navy-mid:#234A5F;
  --near-black-blue:#0F2530;
  --teal:#3D7A8C;
  --teal-dark:#2B5A68;
  --sage:#8FB8B0;
  --sage-tint:#EAF3F1;
  --gold:#B5762C;
  --white:#FFFFFF;
  --off-white:#F5F9F9;
  --ink:#101A1E;
  --border:#CFE0DC;
  --radius-sm:8px;
  --radius:14px;
  --shadow-soft:0 4px 16px rgba(15,37,48,.10);
  --shadow-strong:0 6px 22px rgba(15,37,48,.30);
  --maxw:1200px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden;width:100%}
body{
  overflow-x:hidden;
  width:100%;
  font-family:'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size:18px;
  line-height:1.75;
  color:var(--ink);
  background:var(--white);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Sora', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight:700;
  line-height:1.2;
  color:var(--ink);
  letter-spacing:-.01em;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm);height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:76px 0}
.section-white{background:var(--white)}
.section-tint{background:var(--off-white)}

.index-label{
  display:inline-flex;align-items:center;gap:8px;color:var(--teal-dark);font-weight:700;
  font-size:14px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;
}
.index-label::before{content:"";width:22px;height:2px;background:var(--teal);display:inline-block}
.h2{font-size:clamp(27px,3.6vw,38px);margin-bottom:18px}
.lead{font-size:20px;max-width:680px}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* Buttons — pill shape, distinct from domain 1's rounded-rect */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:'Sora',sans-serif;font-weight:600;font-size:18px;
  padding:17px 34px;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease, background .15s ease;min-height:44px;
}
.btn:focus-visible{outline:3px solid var(--teal);outline-offset:3px}
.btn-primary{background:var(--teal);color:var(--white)}
.btn-primary:hover{background:var(--navy-deep);transform:translateY(-2px)}
.btn-secondary{background:var(--white);color:var(--teal-dark);border-color:var(--teal)}
.btn-secondary:hover{background:var(--sage-tint)}
.btn-block{width:100%}

/* Ticker */
.ticker{background:var(--navy-deep);color:var(--white);text-align:center;font-size:16px;font-weight:600;padding:10px 16px}

/* Nav */
.nav{position:sticky;top:0;z-index:100;background:var(--white);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:var(--maxw);margin:0 auto}
.brand{font-family:'Sora',sans-serif;font-weight:800;font-size:21px;color:var(--navy-deep);display:flex;align-items:center;gap:8px}
.brand .mark{width:12px;height:12px;background:var(--teal);border-radius:3px;display:inline-block}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-size:16px;font-weight:600;color:var(--ink)}
.nav-links a:hover{color:var(--teal-dark)}
.nav-toggle{display:none;background:none;border:none;font-size:28px;color:var(--navy-deep);cursor:pointer}
@media(max-width:900px){
  .nav-links{position:fixed;top:0;right:0;height:100vh;width:78%;max-width:340px;background:var(--white);
    flex-direction:column;padding:100px 32px 32px;gap:24px;transform:translateX(100%);transition:transform .25s ease;box-shadow:-8px 0 24px rgba(0,0,0,.15)}
  .nav-links.open{transform:translateX(0)}
  .nav-toggle{display:block}
}

/* Hero — mirrored: image LEFT, copy RIGHT */
.hero{
  background-color:var(--navy-deep);
  background-image:radial-gradient(at center center, var(--teal) 0%, var(--near-black-blue) 100%);
  color:var(--white);padding:64px 0 0;
}
.hero-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:center;padding-bottom:56px}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}}
.hero-art{order:1}
.hero-copy{order:2}
@media(max-width:900px){.hero-art{order:1}.hero-copy{order:2}}
.hero-art img{border-radius:var(--radius);box-shadow:var(--shadow-strong);max-width:420px;width:100%;margin:0 auto;display:block}
@media(max-width:900px){.hero-art img{max-width:280px}}
.hero-copy h1{color:var(--white);font-size:clamp(32px,4.6vw,48px);margin-bottom:18px}
.hero-copy .lead{color:var(--white);opacity:.92;margin-bottom:26px}
.stat-row{display:flex;gap:28px;flex-wrap:wrap;margin-bottom:30px}
.stat{border-left:2px solid var(--sage);padding-left:14px}
.stat strong{display:block;font-family:'Sora',sans-serif;font-size:26px}
.stat span{font-size:14px;opacity:.85}

/* Horizontal timeline — signature element */
.timeline-strip{background:var(--near-black-blue);padding:0}
.timeline-inner{display:flex;overflow-x:auto}
.timeline-step{
  flex:1;min-width:180px;padding:26px 22px;border-right:1px solid rgba(255,255,255,.12);color:var(--white);
}
.timeline-step:last-child{border-right:none}
.timeline-step .tl-week{color:var(--sage);font-family:'Sora',sans-serif;font-weight:700;font-size:14px;letter-spacing:.05em;text-transform:uppercase;margin-bottom:8px}
.timeline-step p{font-size:15px;opacity:.9;line-height:1.6}

/* Trust badges */
.badges-row{display:flex;flex-wrap:wrap;justify-content:center;gap:0;background:var(--off-white)}
.badge-item{
  flex:1;min-width:150px;text-align:center;padding:28px 16px;border-right:1px solid var(--border);
  font-size:15px;font-weight:700;color:var(--navy-deep);
}
.badge-item:last-child{border-right:none}
.badge-icon{font-size:26px;display:block;margin-bottom:8px}

/* Data panels (replace "cards") */
.panel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);margin-top:8px}
@media(max-width:900px){.panel-grid{grid-template-columns:1fr}}
.panel{background:var(--white);padding:32px;border-left:4px solid var(--teal)}
.panel .panel-idx{font-family:'Sora',sans-serif;font-weight:800;font-size:13px;color:var(--teal-dark);letter-spacing:.08em;margin-bottom:10px}
.panel h3{font-size:20px;margin-bottom:10px}
.panel p{font-size:16.5px}

/* Ingredients — label-forward, table style */
.ingredient-table-wrap{margin-top:28px;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.ing-row{display:grid;grid-template-columns:70px 1fr 140px;gap:18px;align-items:center;padding:18px 20px;border-bottom:1px solid var(--border);background:var(--white)}
.ing-row:last-child{border-bottom:none}
.ing-row img{width:56px;height:56px;object-fit:cover;border-radius:8px}
.ing-row h4{font-size:17px;margin-bottom:2px}
.ing-row p{font-size:15.5px}
.ing-dose{text-align:right;font-family:'Sora',sans-serif;font-weight:700;color:var(--teal-dark);font-size:16px}
.allergen-note{margin-top:24px;background:var(--sage-tint);border-left:4px solid var(--teal);border-radius:var(--radius-sm);padding:20px 24px;font-size:16px}

/* Benefit list — numbered instead of card icons */
.benefit-list{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:28px;border-top:1px solid var(--border)}
@media(max-width:800px){.benefit-list{grid-template-columns:1fr}}
.benefit-row{display:flex;gap:18px;padding:24px 4px;border-bottom:1px solid var(--border)}
.benefit-num{font-family:'Sora',sans-serif;font-weight:800;font-size:22px;color:var(--sage);flex-shrink:0;width:36px}
.benefit-row h4{font-size:18px;margin-bottom:4px}
.benefit-row p{font-size:16px}

/* How it works — vertical stepped list distinct from domain1's 4-card grid */
.step-list{margin-top:28px;max-width:760px}
.step-row{display:flex;gap:24px;padding:26px 0;border-bottom:1px solid var(--border)}
.step-row:last-child{border-bottom:none}
.step-circle{
  flex-shrink:0;width:44px;height:44px;border-radius:50%;background:var(--navy-deep);color:var(--white);
  display:flex;align-items:center;justify-content:center;font-family:'Sora',sans-serif;font-weight:700;
}
.step-row h3{font-size:19px;margin-bottom:6px}

/* Who it's for */
.for-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:1px solid var(--border);margin-top:8px}
@media(max-width:800px){.for-grid{grid-template-columns:1fr}}
.for-box{background:var(--white);padding:32px}
.for-box h3{margin-bottom:16px}
.for-box li{margin-bottom:12px;padding-left:26px;position:relative;font-size:16.5px}
.for-box li::before{position:absolute;left:0;font-weight:800}
.for-yes li::before{content:"✓";color:var(--teal-dark)}
.for-no li::before{content:"!";color:var(--navy-deep)}

/* Table (comparison) */
.table-wrap{overflow-x:auto;margin-top:24px;border:1px solid var(--border);border-radius:var(--radius-sm)}
table{width:100%;border-collapse:collapse;background:var(--white);min-width:640px}
th,td{padding:16px 20px;text-align:left;font-size:16px;border-bottom:1px solid var(--border)}
th{background:var(--navy-deep);color:var(--white);font-family:'Sora',sans-serif;font-weight:600}
tr:last-child td{border-bottom:none}
td.yes{color:var(--teal-dark);font-weight:700}

/* Pricing — flat panels, sharp accents */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}
@media(max-width:900px){.pricing-grid{grid-template-columns:1fr}}
.price-card{background:var(--white);border:1px solid var(--border);border-top:4px solid var(--teal);border-radius:var(--radius-sm);padding:30px;text-align:left;display:flex;flex-direction:column}
.price-card.featured{border-top-color:var(--navy-deep);box-shadow:var(--shadow-strong)}
.price-tag{display:inline-block;background:var(--navy-deep);color:var(--white);font-size:13px;font-weight:700;padding:5px 14px;border-radius:999px;margin-bottom:16px}
.price-card img{max-width:130px;margin:0 auto 18px}
.price-card h3{font-size:19px;margin-bottom:6px}
.price-main{font-family:'Sora',sans-serif;font-size:36px;font-weight:800;color:var(--navy-deep);margin:10px 0 2px}
.price-main span{font-size:16px;font-weight:600;color:var(--ink)}
.price-total{font-size:14.5px;margin-bottom:18px;color:var(--ink)}
.price-perks{margin-bottom:22px;flex-grow:1}
.price-perks li{padding-left:24px;position:relative;margin-bottom:9px;font-size:15.5px}
.price-perks li::before{content:"—";position:absolute;left:0;color:var(--teal-dark);font-weight:800}

/* Guarantee */
.guarantee-box{display:flex;gap:32px;align-items:center;background:var(--navy-deep);color:var(--white);border-radius:var(--radius);padding:44px}
@media(max-width:800px){.guarantee-box{flex-direction:column;text-align:center}}
.guarantee-box h2{color:var(--white)}
.guarantee-num{font-family:'Sora',sans-serif;font-size:64px;font-weight:800;color:var(--sage);flex-shrink:0}

/* Testimonials — list style, not cards */
.testi-list{margin-top:28px;display:grid;grid-template-columns:1fr;gap:0;border-top:1px solid var(--border)}
.testi-row{display:grid;grid-template-columns:80px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--border)}
@media(max-width:600px){.testi-row{grid-template-columns:56px 1fr}}
.testi-row img{width:64px;height:64px;border-radius:50%;object-fit:cover}
.testi-stars{color:var(--gold);font-size:16px;margin-bottom:8px}
.testi-row strong{display:block;margin-top:10px;font-size:15.5px}
.testi-row span{font-size:14px}

/* FAQ */
.faq-list{max-width:820px;margin:32px 0 0}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:22px 4px;font-family:'Sora',sans-serif;font-weight:700;font-size:17.5px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;cursor:pointer;gap:16px;min-height:44px}
.faq-q:focus-visible{outline:3px solid var(--teal);outline-offset:2px}
.faq-icon{font-size:20px;color:var(--teal-dark);flex-shrink:0;transition:transform .2s ease}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;font-size:16.5px;padding:0 4px}
.faq-item.open .faq-a{max-height:400px;padding-bottom:22px}

/* Blog cards */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);margin-top:28px}
@media(max-width:900px){.blog-grid{grid-template-columns:1fr}}
.blog-card{background:var(--white);display:flex;flex-direction:column}
.blog-card img{border-radius:0;aspect-ratio:16/10;object-fit:cover}
.blog-card-body{padding:22px}
.blog-card h3{font-size:18px;margin-bottom:10px}
.blog-card p{font-size:15.5px;margin-bottom:14px}
.blog-card .read-more{color:var(--teal-dark);font-weight:700}

/* Final CTA */
.final-cta{background-color:var(--navy-deep);background-image:radial-gradient(at center center, var(--teal) 0%, var(--near-black-blue) 100%);color:var(--white);text-align:center;padding:76px 0}
.final-cta img{max-width:190px;margin:0 auto 26px}
.final-cta h2{color:var(--white)}
.pay-icons{display:flex;justify-content:center;gap:14px;margin-top:26px;font-size:14.5px;opacity:.85}

/* Footer */
footer{background:var(--near-black-blue);color:var(--white);padding:52px 0 26px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px;margin-bottom:34px}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr 1fr}}
.footer-grid h4{color:var(--white);font-size:15.5px;margin-bottom:15px}
.footer-grid li{margin-bottom:9px}
.footer-grid a{opacity:.85}
.footer-grid a:hover{opacity:1;text-decoration:underline}
.footer-disclaimer{border-top:1px solid rgba(255,255,255,.15);padding-top:22px;opacity:.75;font-size:13.5px;line-height:1.7}
.footer-bottom{margin-top:18px;opacity:.6;font-size:13px}

/* Sticky mobile CTA */
.sticky-cta{position:fixed;bottom:0;left:0;right:0;background:var(--white);border-top:1px solid var(--border);padding:12px 16px;display:none;z-index:90;box-shadow:0 -4px 16px rgba(0,0,0,.1)}
@media(max-width:900px){.sticky-cta{display:block}body{padding-bottom:78px}}

/* Back to top */
.back-top{position:fixed;bottom:96px;right:20px;background:var(--teal);color:var(--white);width:46px;height:46px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:20px;border:none;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s ease;z-index:80;box-shadow:var(--shadow-soft)}
.back-top.visible{opacity:1;pointer-events:auto}
@media(min-width:901px){.back-top{bottom:24px}}

/* Exit popup */
.popup-overlay{position:fixed;inset:0;background:rgba(15,37,48,.72);display:none;align-items:center;justify-content:center;z-index:200;padding:20px}
.popup-overlay.show{display:flex}
.popup-box{background:var(--white);border-radius:var(--radius);max-width:440px;width:100%;padding:36px;text-align:center;position:relative}
.popup-close{position:absolute;top:14px;right:16px;background:none;border:none;font-size:26px;cursor:pointer;color:var(--ink)}
.popup-timer{font-family:'Sora',sans-serif;font-size:34px;font-weight:800;color:var(--teal-dark);margin:16px 0}

/* Skip link */
.skip-link{position:absolute;left:-999px;top:0;background:var(--teal);color:var(--white);padding:14px 20px;z-index:300;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

/* Blog article */
.article-header{background:var(--off-white);padding:48px 0}
.breadcrumbs{font-size:14.5px;margin-bottom:16px}
.breadcrumbs a{color:var(--teal-dark)}
.article-meta{font-size:14.5px;margin-top:10px}
.progress-bar{position:fixed;top:0;left:0;height:4px;background:var(--teal);width:0;z-index:150}
.article-body{max-width:760px;margin:0 auto;padding:52px 24px}
.article-body h2{margin-top:42px;margin-bottom:16px;font-size:26px}
.article-body h3{margin-top:30px;margin-bottom:12px;font-size:21px}
.article-body p{margin-bottom:20px;font-size:18px}
.article-body ul,.article-body ol{margin:0 0 20px 24px}
.article-body li{margin-bottom:10px;font-size:18px}
.toc{background:var(--off-white);border:1px solid var(--border);border-left:4px solid var(--teal);padding:22px 26px;margin:0 auto 42px;max-width:760px}
.toc h4{margin-bottom:12px}
.toc a{color:var(--teal-dark);display:block;padding:4px 0;font-weight:600}
.prevnext{display:flex;justify-content:space-between;gap:20px;max-width:760px;margin:44px auto 0;padding:0 24px}
.prevnext a{border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 20px;flex:1;font-weight:700}
.related-wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px 76px}