:root {
  --navy: #06182d;
  --navy-deep: #03101f;
  --navy-soft: #0b2742;
  --blue: #4e9dff;
  --blue-bright: #8bc8ff;
  --graphite: #334155;
  --muted: #526075;
  --paper: #f5f6f8;
  --warm-white: #fbfaf8;
  --rule: #c6d2df;
  --white: #ffffff;
  --max: 1240px;
  --radius: 1.15rem;
  color: var(--graphite);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); }
img { display: block; max-width: 100%; }
a { color: inherit; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 20;
  padding: .7rem 1rem;
  border-radius: .25rem;
  background: var(--blue);
  color: var(--navy-deep);
  font-weight: 700;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  width: 100%;
  margin: 0;
  padding: .75rem max(1.25rem, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--rule);
  background: var(--warm-white);
  color: var(--navy);
  min-width: 0;
}
.brand { width: 11.5rem; min-width: 0; flex: 0 1 auto; }
.brand img { width: 100%; height: auto; display: block; }
.brand__logo--dark { filter: none; }
.brand__logo--light { filter: brightness(0) invert(1); }
.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); min-width: 0; flex: 0 1 auto; font-size: .82rem; font-weight: 650; }
.site-nav a { text-decoration: none; color: var(--navy); }
.site-nav a:hover { color: var(--blue); }
.site-nav .nav-cta { padding: .72rem 1rem; border-radius: .6rem; background: var(--blue); color: var(--navy-deep); }

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 45rem;
  padding: 7rem max(1.5rem, calc((100vw - var(--max)) / 2)) 6.5rem;
  overflow: hidden;
  color: var(--white);
  background: var(--navy-deep) url("/assets/homepage/peptide-molecular-hero-v1.png") center / cover no-repeat;
}
.hero__veil { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,15,31,.9) 0%, rgba(3,15,31,.66) 44%, rgba(3,15,31,.17) 100%); }
.hero__content { position: relative; z-index: 1; width: min(45rem, 100%); min-width: 0; }
.eyebrow { margin: 0 0 1.5rem; color: var(--white); font-size: .72rem; font-weight: 780; letter-spacing: .21em; text-transform: uppercase; }
.eyebrow::before { display: inline-block; width: 2.25rem; height: 1px; margin-right: .8rem; background: var(--blue); content: ""; vertical-align: middle; }
.eyebrow--dark { color: var(--graphite); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: -.045em; }
h1 { max-width: 47rem; margin-bottom: 1.5rem; font-size: clamp(2.8rem, 6vw, 5.7rem); line-height: .99; overflow-wrap: anywhere; }
.hero__lead { max-width: 55rem; margin: 2rem 0 2.2rem; color: rgba(255,255,255,.78); font-size: 1.1rem; line-height: 1.65; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3.1rem; padding: .85rem 1.25rem; border-radius: .6rem; background: var(--blue); color: var(--navy-deep); font-weight: 800; text-decoration: none; }
.button:hover { background: var(--blue-bright); }

.section { padding: clamp(4rem, 8vw, 7.5rem) max(1.25rem, calc((100vw - 1160px) / 2)); }
.section--light { background: var(--warm-white); }
.section--dark { background: var(--navy-deep); }
.section-heading-block { width: min(100%, 760px); margin: 0 0 2rem; }
.section-heading-block p { max-width: 760px; margin: 0; color: var(--muted); line-height: 1.65; }
.section-heading { margin: 10px 0 20px; color: var(--navy); font-size: clamp(30px, 3.4vw, 48px); line-height: 1.12; letter-spacing: -.035em; }
.section-heading-block--dark p { color: rgba(255,255,255,.74); }
.section-heading--dark { color: var(--white); }
.infographic-frame { margin: 0 auto; width: min(100%, 1160px); }
.infographic-frame img { width: 100%; height: auto; }
.problem { padding-top: clamp(3rem, 6vw, 5rem); padding-bottom: clamp(3rem, 6vw, 5rem); }
.different { position: relative; isolation: isolate; padding-top: clamp(3rem, 6vw, 5rem); padding-bottom: clamp(3rem, 6vw, 5rem); background-color: #08182d; background-image: radial-gradient(ellipse at 20% 55%, rgba(65,120,177,.22), transparent 65%), linear-gradient(120deg, #08182d, #132b43 55%, #071324); }
.different::before { position: absolute; inset: 0; z-index: -1; pointer-events: none; background: linear-gradient(118deg, transparent 20%, rgba(177,209,239,.045) 49%, rgba(113,173,220,.02) 62%, transparent 80%), radial-gradient(ellipse at 85% 45%, rgba(174,210,245,.045), transparent 70%), radial-gradient(ellipse at 50% 100%, transparent 30%, rgba(0,5,14,.35) 100%); box-shadow: inset 0 1px rgba(191,220,249,.12), inset 0 -1px rgba(191,220,249,.08); content: ""; }
.different__positioning { width: min(100%, 1160px); margin: clamp(2.75rem, 5vw, 4.5rem) 0 0; padding-top: clamp(2.5rem, 4vw, 3.5rem); border-top: 1px solid rgba(191,220,249,.22); text-align: left; }
.different__positioning .eyebrow { margin-bottom: 1rem; color: var(--blue-bright); }
.different__positioning h2 { max-width: none; margin: 0 0 1.25rem; color: var(--white); font-size: clamp(1.8rem, 3.4vw, 2.85rem); line-height: 1.1; letter-spacing: -.035em; }
.different__positioning > p:not(.eyebrow) { max-width: none; margin: 0 0 1.1rem; color: rgba(255,255,255,.76); font-size: 1.05rem; line-height: 1.7; }
.different__positioning .different__positioning-close { margin-top: 1.7rem; margin-bottom: 0; color: rgba(255,255,255,.9); }
.different__positioning-close strong { color: var(--blue-bright); font-weight: 750; }
.start { padding-top: clamp(3rem, 6vw, 5rem); padding-bottom: clamp(3rem, 6vw, 5rem); }
.start__action { display: flex; justify-content: flex-end; margin-top: clamp(1rem, 2vw, 1.5rem); }
.start__action a { display: inline-flex; align-items: center; justify-content: center; min-height: 2.8rem; padding: .7rem 1rem; border: 1px solid var(--blue); border-radius: .6rem; background: var(--blue); color: var(--navy-deep); font-weight: 800; text-decoration: none; white-space: nowrap; }
.start__action a:hover { border-color: var(--blue-bright); background: var(--blue-bright); color: var(--navy-deep); }
.infographic-frame--problem img { border-radius: 1rem; box-shadow: 0 1.5rem 3.5rem rgba(6,24,45,.14); }
.infographic-frame--different img { border-radius: 1rem; box-shadow: 0 1.5rem 3.5rem rgba(0,0,0,.22); }
.infographic-frame--start img { border-radius: 1rem; box-shadow: 0 1.5rem 3.5rem rgba(6,24,45,.12); }
.industry-context { width: min(100%, 1160px); margin: clamp(3.25rem, 6vw, 5rem) auto 0; padding-top: clamp(2.75rem, 5vw, 4.25rem); border-top: 1px solid var(--rule); }
.industry-context__lead { max-width: none; margin: .65rem auto .7rem; color: var(--navy); font-size: clamp(1.4rem, 2.8vw, 2.2rem); font-weight: 750; letter-spacing: -.035em; line-height: 1.12; text-align: center; }
.industry-context__intro { max-width: none; margin: 0 auto 2.25rem; color: var(--muted); font-size: 1.05rem; line-height: 1.7; text-align: center; }
.industry-context__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.industry-context__item { min-width: 0; padding: 1.65rem 1.5rem 1.8rem 0; text-align: center; }
.industry-context__item + .industry-context__item { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
.industry-context__item h3 { margin-bottom: .7rem; color: var(--navy); font-size: 1.2rem; line-height: 1.15; }
.industry-context__item p { max-width: 29ch; margin: 0 auto; color: var(--muted); line-height: 1.65; }
.industry-context__close { max-width: 50rem; margin: 1.8rem 0 .7rem; color: var(--navy); font-size: 1.05rem; font-weight: 700; line-height: 1.5; }
.industry-context__sources { margin: 0; color: var(--muted); font-size: .75rem; line-height: 1.6; }
.industry-context__sources a { color: var(--graphite); text-underline-offset: .2rem; }

.guides { position: relative; min-height: 48rem; overflow: hidden; padding: clamp(4rem, 8vw, 7.5rem) max(1.25rem, calc((100vw - 1160px) / 2)); color: var(--white); background: var(--navy-deep) url("/assets/homepage/guides-digital-library-hero-concept-v1.png") center / cover no-repeat; }
.guides__veil { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(3,16,32,.28), rgba(3,16,32,.72) 88%); }
.guides__inner { position: relative; z-index: 1; width: min(100%, 1160px); min-width: 0; margin: 0 auto; }
.guides h2 { max-width: 760px; margin: 10px 0 20px; font-size: clamp(30px, 3.4vw, 48px); line-height: 1.12; letter-spacing: -.035em; }
.guides__intro { max-width: 40rem; margin-bottom: 2.5rem; color: rgba(255,255,255,.76); font-size: 1.08rem; }
.guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; align-items: stretch; }
.guide-card { display: flex; min-height: 23rem; flex-direction: column; padding: 1.45rem; border: 1px solid rgba(139,200,255,.72); border-radius: 1rem; background: linear-gradient(145deg, rgba(9,37,65,.9), rgba(3,18,35,.84)); box-shadow: 0 1.5rem 3rem rgba(0,0,0,.24), inset 0 1px rgba(255,255,255,.1); backdrop-filter: blur(8px); text-decoration: none; }
.guide-card:hover { border-color: var(--blue-bright); transform: translateY(-.2rem); }
.guide-card__media { position: relative; display: block; width: 100%; aspect-ratio: 758 / 299; margin: 0 0 1.5rem; overflow: hidden; border: 1px solid rgba(139,200,255,.48); border-radius: .55rem; background: var(--warm-white); box-shadow: 0 .55rem 1rem rgba(0,0,0,.18); }
.guide-card__media img { position: absolute; inset: 0; display: block; width: 100%; height: 100%; max-width: none; object-fit: cover; }
.guide-card__line { width: 2.5rem; height: 1px; margin: 0 0 1.25rem; background: var(--blue); }
.guide-card h3 { margin-bottom: .9rem; color: var(--white); font-size: clamp(1.3rem, 2vw, 1.75rem); line-height: 1.08; }
.guide-card p { margin-bottom: 1.6rem; color: rgba(255,255,255,.72); line-height: 1.6; }
.guide-card__link { margin-top: auto; color: var(--blue-bright); font-size: .9rem; font-weight: 750; }
.guides__all { display: flex; justify-content: flex-end; margin-top: 1.35rem; }
.guides__all-link { color: var(--blue-bright); font-size: .92rem; font-weight: 750; text-underline-offset: .25rem; }
.guides__all-link:hover { color: var(--white); }

.faq { padding-top: clamp(4rem, 8vw, 7rem); padding-bottom: clamp(4rem, 8vw, 7rem); }
.content-width { width: min(100%, 920px); margin: 0 auto; }
.faq h2 { margin: 10px 0 20px; color: var(--navy); font-size: clamp(30px, 3.4vw, 48px); line-height: 1.12; letter-spacing: -.035em; }
.faq-list details { border-top: 1px solid var(--rule); padding: 1.25rem 0; }
.faq-list details:last-child { border-bottom: 1px solid var(--rule); }
.faq-list summary { cursor: pointer; color: var(--navy); font-size: 1.08rem; font-weight: 750; }
.faq-list p { max-width: 48rem; margin: 1rem 0 .25rem; color: var(--muted); line-height: 1.7; }

.review-footer { padding: 56px 5.4% 24px; color: #d1dfed; background: radial-gradient(ellipse at 20% 55%, rgba(65,120,177,.22), transparent 65%), linear-gradient(120deg, #08182d, #132b43 55%, #071324); }
.footer-inner { max-width: 1280px; margin: auto; }
.footer-columns { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-brand img { width: 190px; max-width: 100%; height: auto; margin-bottom: 0; mix-blend-mode: lighten; }
.footer-brand p { max-width: 30ch; line-height: 1.7; margin-top: 18px; }
.review-footer h3 { margin: 0 0 20px; color: #91bedf; font: 600 14px system-ui; letter-spacing: .08em; text-transform: uppercase; }
.footer-links { display: flex; flex-direction: column; gap: 13px; }
.review-footer a { color: #e1edf8; text-decoration: none; }
.review-footer a:hover { color: #bde7ff; }
.review-footer a:focus-visible { outline: 2px solid #bde7ff; outline-offset: 5px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.15); font-size: 13px; }

.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }

@media (max-width: 900px) {
  .site-header { align-items: flex-start; }
  .site-nav { flex-wrap: wrap; justify-content: flex-end; gap: .65rem 1rem; }
  .site-nav a:not(.nav-cta) { display: none; }
  .guide-grid { grid-template-columns: 1fr; }
  .guide-card { min-height: 16rem; }
}

@media (max-width: 620px) {
  .site-header { display: grid; grid-template-columns: minmax(0, 1fr) auto; width: 100%; gap: .75rem; padding: .75rem 1rem; }
  .brand { width: auto; max-width: 9rem; }
  .site-nav { flex: 0 1 auto; gap: 0; }
  .site-nav .nav-cta { padding: .6rem .75rem; font-size: .75rem; white-space: nowrap; }
  .hero { min-height: 42rem; padding: 8rem 1.25rem 4rem; background-position: 62% center; }
  .hero__content h1 { width: 100%; max-width: 100%; font-size: clamp(2.4rem, 12vw, 3.8rem); word-break: break-word; }
  .hero__lead { font-size: 1rem; }
  .section { padding-right: 1rem; padding-left: 1rem; }
  .infographic-frame { overflow: auto; }
  .infographic-frame img { min-width: 640px; max-width: none; }
  .problem, .different, .start { overflow: hidden; }
  .industry-context { margin-top: 2.75rem; padding-top: 2.5rem; }
  .industry-context__grid { grid-template-columns: 1fr; }
  .industry-context__item { padding: 1.25rem 0; }
  .industry-context__item + .industry-context__item { padding-left: 0; border-top: 1px solid var(--rule); border-left: 0; }
  .guides { min-height: auto; padding-right: 1rem; padding-left: 1rem; }
  .guides h2 { max-width: 100%; font-size: 2.8rem; word-break: break-word; }
  .guides .eyebrow, .guides__intro { max-width: 100%; overflow-wrap: anywhere; }
  .footer-columns { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}
@media (min-width: 960px) {
  .industry-context__lead,
  .industry-context__intro { white-space: nowrap; }
}
@media (max-width: 700px) {
  .footer-columns { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
  .review-footer { padding: 40px 22px 24px; }
}