:root{
  --ink:#10283a;
  --navy:#0a2134;
  --lake:#6cc7e8;
  --lake2:#bceaf6;
  --sun:#ffd54a;
  --orange:#ff7b39;
  --cream:#fffaf0;
  --white:#ffffff;
  --mint:#dff6ed;
  --purple:#7e6cff;
  --muted:#607382;
  --line:rgba(16,40,58,.14);
  --shadow:0 26px 80px rgba(16,40,58,.13);
  --radius:30px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.55}
a{color:inherit}
img,svg{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
.wrap{width:min(1240px,calc(100% - 38px));margin:auto}
.kicker{font-size:.73rem;letter-spacing:.18em;text-transform:uppercase;font-weight:1000;color:#e05a23}
.display{font:900 clamp(3.1rem,7vw,7.1rem)/.88 Arial,sans-serif;letter-spacing:-.075em;margin:12px 0}
.lede{max-width:720px;font-size:1.08rem;color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.topbar{background:var(--navy);color:#d9edf5;font-size:.78rem}
.topbar .wrap{padding:9px 0;display:flex;justify-content:space-between;gap:20px}
.topbar a{color:white;text-decoration:none}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,250,240,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav{height:82px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{width:54px;height:54px;border-radius:18px;background:linear-gradient(135deg,var(--sun),var(--orange) 48%,var(--lake) 49%);position:relative;box-shadow:inset 0 0 0 3px white,0 8px 25px rgba(16,40,58,.12)}
.brand-mark:before{content:"YP";position:absolute;inset:0;display:grid;place-items:center;font-weight:1000;color:var(--navy);letter-spacing:-.08em}
.brand-copy strong{display:block;font-size:1.08rem}
.brand-copy span{display:block;font-size:.63rem;letter-spacing:.17em;text-transform:uppercase;color:#6a7c89;margin-top:3px}
.nav-links{display:flex;gap:25px;align-items:center}
.nav-links a{text-decoration:none;font-weight:900;font-size:.86rem}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--orange)}
.nav-cta{background:var(--navy);color:white!important;padding:13px 18px;border-radius:999px}
.menu-btn{display:none;width:44px;height:44px;border:0;border-radius:50%;background:var(--navy);color:white;font-size:1.2rem}

.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#effaff 0%,#fff7df 50%,#ffe4cc 100%)}
.hero:before{content:"";position:absolute;width:700px;height:700px;border-radius:50%;background:rgba(108,199,232,.35);filter:blur(2px);right:-220px;top:-300px}
.hero:after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:rgba(255,213,74,.32);left:-250px;bottom:-330px}
.hero-grid{position:relative;z-index:2;min-height:760px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:45px;padding:70px 0 95px}
.hero h1{font:900 clamp(4.5rem,10vw,10.2rem)/.77 Arial,sans-serif;letter-spacing:-.095em;text-transform:uppercase;margin:18px 0 24px}
.hero h1 span{display:block;color:var(--orange)}
.hero p{font-size:1.15rem;color:#536a79;max-width:670px}
.actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:29px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:52px;padding:0 22px;border-radius:999px;text-decoration:none;border:2px solid transparent;font-weight:1000;cursor:pointer}
.btn-primary{background:var(--navy);color:white}
.btn-primary:hover{background:#153d5a}
.btn-yellow{background:var(--sun);color:var(--navy)}
.btn-outline{border-color:var(--navy);color:var(--navy);background:transparent}
.hero-note{font-size:.8rem;color:#6e8290;margin-top:20px}

.molecule-stage{position:relative;min-height:600px}
.orbit{position:absolute;border:1px solid rgba(16,40,58,.14);border-radius:50%}
.orbit.o1{width:560px;height:560px;right:-15px;top:15px}
.orbit.o2{width:420px;height:420px;right:55px;top:85px}
.orbit.o3{width:270px;height:270px;right:130px;top:160px}
.node{position:absolute;border-radius:50%;display:grid;place-items:center;font-weight:1000;box-shadow:var(--shadow);border:5px solid var(--cream)}
.node.big{width:155px;height:155px;background:var(--navy);color:white;right:185px;top:212px;font-size:1.35rem;text-align:center;padding:20px}
.node.n1{width:95px;height:95px;background:var(--sun);right:50px;top:80px}
.node.n2{width:115px;height:115px;background:var(--lake);right:15px;bottom:90px}
.node.n3{width:92px;height:92px;background:var(--orange);left:40px;top:70px;color:white}
.node.n4{width:105px;height:105px;background:var(--mint);left:60px;bottom:75px}
.node.n5{width:74px;height:74px;background:#c4baff;right:300px;top:45px}
.evidence-badge{position:absolute;left:10px;top:240px;background:white;border:1px solid var(--line);border-radius:22px;padding:20px 22px;box-shadow:var(--shadow);max-width:235px;transform:rotate(-3deg)}
.evidence-badge strong{display:block;font-size:2.2rem}.evidence-badge span{font-size:.82rem;color:var(--muted)}

.signal-strip{background:var(--navy);color:white;overflow:hidden}
.signal-track{white-space:nowrap;display:inline-flex;gap:45px;padding:13px 0;font-size:.78rem;font-weight:1000;letter-spacing:.12em;text-transform:uppercase;animation:scroll 30s linear infinite}
.signal-track span:after{content:"✦";color:var(--sun);margin-left:45px}
@keyframes scroll{to{transform:translateX(-50%)}}

.section{padding:100px 0}
.section-blue{background:#eaf8fc}
.section-dark{background:var(--navy);color:white}
.section-head{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:end;margin-bottom:50px}
.section-dark .lede{color:#bdd0dc}

.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pillar{border:1px solid var(--line);border-radius:28px;padding:30px;background:white;min-height:290px}
.pillar .icon{width:52px;height:52px;border-radius:16px;background:var(--lake2);display:grid;place-items:center;font-size:1.45rem}
.pillar:nth-child(2) .icon{background:#fff0a9}.pillar:nth-child(3) .icon{background:#ffd9c7}
.pillar h3{font-size:1.35rem;margin:30px 0 10px}.pillar p{color:var(--muted)}

.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tier{border-radius:26px;padding:26px;background:white;border:1px solid var(--line)}
.tier-letter{font-size:4.3rem;font-weight:1000;line-height:.8}
.tier.a .tier-letter{color:#1d8f65}.tier.b .tier-letter{color:#3884a9}.tier.c .tier-letter{color:#d18a1d}.tier.d .tier-letter{color:#c35d4b}
.tier h3{margin:24px 0 8px}.tier p{font-size:.9rem;color:var(--muted)}

.featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.peptide-card{background:white;border:1px solid var(--line);border-radius:26px;padding:25px;transition:.22s;position:relative;overflow:hidden}
.peptide-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.peptide-card:before{content:"";position:absolute;right:-45px;top:-45px;width:120px;height:120px;border-radius:50%;background:var(--lake2);opacity:.7}
.card-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;position:relative;z-index:2}
.tier-chip{display:inline-flex;gap:7px;align-items:center;border-radius:999px;padding:7px 10px;font-size:.68rem;font-weight:1000;text-transform:uppercase;letter-spacing:.09em;background:#eef2f3}
.peptide-card h3{font-size:1.5rem;margin:25px 0 6px}.peptide-card .sub{color:var(--muted);font-size:.85rem}.peptide-card p{color:#566c79;font-size:.93rem}.peptide-card a{font-weight:1000;color:#d65722;text-decoration:none}

.library-tools{display:grid;grid-template-columns:1fr auto;gap:15px;margin-bottom:25px}
.searchbox{background:white;border:1px solid var(--line);border-radius:17px;padding:15px 17px;width:100%}
.filters{display:flex;gap:8px;flex-wrap:wrap}
.filter{border:1px solid var(--line);background:white;border-radius:999px;padding:10px 13px;font-weight:900;cursor:pointer}
.filter.active{background:var(--navy);color:white}
.library-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.library-card.hidden{display:none}
.library-card .meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.meta span{font-size:.7rem;background:#f0f4f5;border-radius:999px;padding:7px 9px;font-weight:900;color:#5f7280}

.page-hero{background:linear-gradient(120deg,var(--navy),#174c69);color:white;padding:95px 0 80px;position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(108,199,232,.17);right:-140px;top:-190px}
.page-hero .kicker{color:var(--sun)}.page-hero h1{font:900 clamp(4rem,9vw,8.5rem)/.8 Arial,sans-serif;letter-spacing:-.08em;text-transform:uppercase;margin:16px 0}.page-hero p{max-width:760px;color:#c7dce7;font-size:1.08rem}

.profile-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:34px;align-items:start}
.profile-aside{position:sticky;top:110px}
.profile-panel{background:white;border:1px solid var(--line);border-radius:28px;padding:28px}
.profile-panel h2{font-size:2rem;margin:5px 0 12px}.profile-panel p{color:var(--muted)}
.profile-facts{margin-top:20px}.profile-fact{padding:13px 0;border-bottom:1px solid var(--line)}.profile-fact small{display:block;font-size:.67rem;text-transform:uppercase;letter-spacing:.14em;color:#7b8991;font-weight:900}.profile-fact strong{display:block;margin-top:5px}
.content-block{background:white;border:1px solid var(--line);border-radius:28px;padding:34px;margin-bottom:20px}
.content-block h2{font-size:2rem;margin:0 0 16px}.content-block h3{font-size:1.2rem;margin:24px 0 10px}.content-block p{color:#566c79}
.benefit-list{display:grid;gap:10px;padding:0;list-style:none}.benefit-list li{background:#f5fafb;border-radius:15px;padding:14px 15px}.benefit-list li:before{content:"↗";color:var(--orange);font-weight:1000;margin-right:10px}
.source-list{display:grid;gap:10px}.source-list a{display:flex;justify-content:space-between;gap:20px;padding:14px 15px;border:1px solid var(--line);border-radius:15px;text-decoration:none;font-weight:900}.source-list a:hover{border-color:var(--lake);background:#f4fbfd}

.reg-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.reg-card{background:white;border:1px solid var(--line);border-radius:28px;padding:32px}.reg-card h2{font-size:2rem;margin:8px 0 14px}.reg-card p{color:#607482}
.editorial{background:var(--sun);border-radius:30px;padding:45px}.editorial h2{font-size:3rem;line-height:.95;letter-spacing:-.05em;margin:8px 0 20px}.editorial p{font-size:1.04rem}

.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px}
.contact-side{background:var(--navy);color:white;border-radius:30px;padding:38px}.contact-side h2{font-size:2.7rem;line-height:.95}.contact-side p{color:#c5d8e2}
.contact-form{background:white;border:1px solid var(--line);border-radius:30px;padding:36px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label{font-size:.78rem;font-weight:900}.field input,.field select,.field textarea{border:1px solid #cad7dd;border-radius:14px;padding:14px;background:#fbfdfd}.field textarea{min-height:145px;resize:vertical}
.form-status{display:none;margin-top:16px;background:#eef9ed;padding:15px;border-radius:14px}.form-status.show{display:block}

.footer{background:#071b2a;color:#aac1cf;padding:60px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:40px}.footer strong,.footer h4{color:white}.footer a{display:block;text-decoration:none;margin:8px 0}.footer a:hover{color:var(--sun)}
.footer-brand{font-size:1.6rem;font-weight:1000;color:white}.footer-brand span{color:var(--orange)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:22px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:.78rem}

@media(max-width:950px){
  .nav-links{display:none;position:absolute;top:82px;left:0;right:0;background:var(--cream);padding:22px 24px;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}
  .nav-links.open{display:flex}.menu-btn{display:block}
  .hero-grid,.section-head,.profile-layout,.contact-grid{grid-template-columns:1fr}
  .molecule-stage{min-height:520px}.profile-aside{position:static}
  .pillars,.featured-grid,.library-grid{grid-template-columns:1fr 1fr}.tier-grid{grid-template-columns:1fr 1fr}.reg-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
  .topbar{display:none}.nav{height:72px}.brand-copy span{display:none}
  .hero h1{font-size:4.4rem}.hero-grid{padding-top:45px}.molecule-stage{min-height:420px}.orbit.o1{width:400px;height:400px}.orbit.o2{width:310px;height:310px}.orbit.o3{width:210px;height:210px}.node.big{right:115px;top:150px;width:135px;height:135px}.node.n1{right:10px}.node.n2{right:5px;bottom:45px}.node.n3{left:0}.node.n4{left:20px;bottom:40px}.evidence-badge{display:none}
  .section{padding:72px 0}.pillars,.featured-grid,.library-grid,.tier-grid,.footer-grid{grid-template-columns:1fr}.library-tools{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}