/* MuscleOnGLP — standalone landing page. Self-contained, no external loads. */

:root {
  --accent: #2f6f5e;
  --accent-dark: #245546;
  --accent-light: #e7f1ee;
  --accent-bright: #34a07f;
  --ink: #1b2420;
  --ink-soft: #45524c;
  --bg: #ffffff;
  --bg-alt: #f4f8f6;
  --line: #dde7e3;
  --gold: #e0a63c;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(20, 40, 33, 0.06), 0 4px 14px rgba(20, 40, 33, 0.05);
  --shadow-md: 0 6px 24px rgba(20, 40, 33, 0.10);
  --shadow-lg: 0 20px 60px rgba(20, 40, 33, 0.16);
  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, "Georgia", serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.62;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.12; letter-spacing: -0.01em; color: var(--ink); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); text-wrap: balance; }
h3 { font-size: 1.25rem; letter-spacing: 0; }
p { text-wrap: pretty; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: clamp(56px, 8vw, 104px) 0; }
.eyebrow { display: inline-block; font-family: var(--font); font-size: 0.82rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); background: var(--accent-light); padding: 6px 14px; border-radius: 100px; margin-bottom: 18px; }
.lead { font-size: 1.18rem; color: var(--ink-soft); max-width: 62ch; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font); font-weight: 650; font-size: 1.02rem; padding: 15px 30px; border-radius: 100px; border: 2px solid transparent; cursor: pointer; transition: transform .18s cubic-bezier(.22,1,.36,1), box-shadow .18s, background .18s; text-decoration: none; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 22px rgba(47,111,94,.28); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(47,111,94,.34); }
.btn-ghost { background: transparent; color: var(--accent); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); transform: translateY(-2px); }
.btn-lg { padding: 18px 40px; font-size: 1.1rem; }
@media (prefers-reduced-motion: reduce) { .btn:hover { transform: none; } }

/* Nav */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.82); backdrop-filter: saturate(180%) blur(14px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.16rem; color: var(--ink); letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 30px; height: 30px; border-radius: 8px; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 1.05rem; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--ink-soft); font-weight: 550; font-size: 0.96rem; }
.nav-links a:hover { color: var(--accent); text-decoration: none; }
.nav-cta { padding: 10px 22px; font-size: 0.95rem; }
@media (max-width: 820px) { .nav-links a:not(.nav-cta) { display: none; } }

/* Hero */
.hero { position: relative; overflow: hidden; background:
   radial-gradient(1200px 500px at 80% -10%, #eafaf4 0%, rgba(234,250,244,0) 60%),
   linear-gradient(180deg, #fbfdfc 0%, #ffffff 100%); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; padding: clamp(48px, 7vw, 92px) 0; }
.hero h1 { font-size: clamp(2.3rem, 5vw, 3.7rem); }
.hero .lead { margin-top: 22px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; align-items: center; }
.hero-price { display: flex; align-items: baseline; gap: 8px; margin-top: 22px; }
.hero-price .now { font-size: 2rem; font-weight: 800; font-family: var(--font-display); color: var(--ink); }
.hero-price .was { font-size: 1.1rem; color: var(--ink-soft); text-decoration: line-through; }
.hero-price .tag { font-size: 0.85rem; font-weight: 700; color: var(--accent); background: var(--accent-light); padding: 4px 10px; border-radius: 100px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 18px 26px; margin-top: 30px; }
.hero-trust span { display: flex; align-items: center; gap: 8px; font-size: 0.92rem; color: var(--ink-soft); font-weight: 550; }
.hero-trust svg { flex: none; color: var(--accent); }
.hero-visual { position: relative; display: grid; place-items: center; }
.hero-cover { width: min(360px, 100%); border-radius: 14px; box-shadow: var(--shadow-lg); transform: rotate(2.5deg); transition: transform .4s cubic-bezier(.22,1,.36,1); border: 1px solid var(--line); }
.hero-cover:hover { transform: rotate(0deg) translateY(-4px); }
.hero-badge { position: absolute; bottom: -14px; left: -6px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 12px 16px; box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 10px; }
.hero-badge .n { font-size: 1.5rem; font-weight: 800; color: var(--accent); font-family: var(--font-display); }
.hero-badge .l { font-size: 0.78rem; color: var(--ink-soft); line-height: 1.25; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } .hero-visual { order: -1; } }

/* Stat band */
.statband { background: var(--accent); color: #fff; }
.statband .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 44px 0; text-align: center; }
.statband .n { font-size: clamp(1.9rem, 3.5vw, 2.7rem); font-weight: 800; font-family: var(--font-display); }
.statband .l { font-size: 0.9rem; color: #d3e8e1; margin-top: 4px; }
.statband .grid > div { border-right: 1px solid rgba(255,255,255,.18); }
.statband .grid > div:last-child { border-right: none; }
@media (max-width: 720px) { .statband .grid { grid-template-columns: repeat(2, 1fr); gap: 30px 12px; } .statband .grid > div:nth-child(2) { border-right: none; } }

/* Problem */
.problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.problem-card { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px; }
.problem-card .big { font-size: clamp(3rem, 7vw, 4.6rem); font-weight: 800; font-family: var(--font-display); color: var(--accent); line-height: 1; }
.problem-card .cap { color: var(--ink-soft); margin-top: 8px; font-size: 1.05rem; }
.problem-list { list-style: none; margin-top: 22px; display: grid; gap: 14px; }
.problem-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-soft); }
.problem-list svg { flex: none; margin-top: 4px; color: var(--accent); }
@media (max-width: 820px) { .problem-grid { grid-template-columns: 1fr; gap: 30px; } }

/* Features */
.features { background: var(--bg-alt); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 48px; }
.feature { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: transform .2s, box-shadow .2s; }
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-ico { width: 46px; height: 46px; border-radius: 12px; background: var(--accent-light); color: var(--accent); display: grid; place-items: center; margin-bottom: 16px; }
.feature h3 { margin-bottom: 8px; }
.feature p { color: var(--ink-soft); font-size: 0.98rem; }
@media (max-width: 900px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .feature-grid { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .feature:hover { transform: none; } }

/* Evidence */
.evidence-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 52px; align-items: center; }
.evidence-quote { position: relative; padding-top: 40px; font-family: var(--font-display); font-size: 1.35rem; line-height: 1.42; color: var(--ink); }
.evidence-quote::before { content: "\201C"; position: absolute; top: -10px; left: -4px; font-family: var(--font-display); font-size: 4.2rem; line-height: 1; color: var(--accent); opacity: .5; }
.cite-list { display: grid; gap: 12px; margin-top: 8px; }
.cite { display: flex; gap: 14px; align-items: flex-start; background: var(--bg-alt); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.cite .badge { flex: none; font-size: 0.72rem; font-weight: 800; color: #fff; background: var(--accent); padding: 4px 8px; border-radius: 6px; margin-top: 2px; }
.cite p { font-size: 0.94rem; color: var(--ink-soft); }
.cite strong { color: var(--ink); }
@media (max-width: 820px) { .evidence-grid { grid-template-columns: 1fr; gap: 32px; } }

/* Preview */
.preview-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.preview-strip img { border-radius: 12px; border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; background: #fff; }
.preview-strip img:hover { transform: translateY(-5px) scale(1.02); box-shadow: var(--shadow-lg); }
@media (max-width: 720px) { .preview-strip { grid-template-columns: 1fr; max-width: 380px; margin-left: auto; margin-right: auto; } }
@media (prefers-reduced-motion: reduce) { .preview-strip img:hover { transform: none; } }

/* Reviews */
.reviews { background: var(--bg-alt); }
.rev-head { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.stars { color: var(--gold); font-size: 1.4rem; letter-spacing: 2px; }
.rev-score { font-size: 0.98rem; color: var(--ink-soft); }
.rev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 46px; }
.rev-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; gap: 14px; }
.rev-card .stars { font-size: 1.05rem; }
.rev-card blockquote { font-size: 1.0rem; color: var(--ink); line-height: 1.55; }
.rev-who { display: flex; align-items: center; gap: 12px; margin-top: auto; }
.rev-av { width: 42px; height: 42px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 700; flex: none; }
.rev-who .nm { font-weight: 650; font-size: 0.95rem; }
.rev-who .mt { font-size: 0.82rem; color: var(--ink-soft); }
.rev-note { margin-top: 34px; text-align: center; font-size: 0.86rem; color: var(--ink-soft); }
.rev-card .rev-title { font-size: 1.06rem; font-weight: 700; color: var(--ink); line-height: 1.32; margin: 0; }
.rev-verified { display: inline-flex; align-items: center; gap: 6px; margin-top: auto; font-size: 0.85rem; font-weight: 650; color: var(--accent); }
.rev-verified svg { flex: none; }
@media (max-width: 900px) { .rev-grid { grid-template-columns: 1fr; max-width: 460px; margin-left:auto; margin-right:auto; } }

/* Pricing */
.price-card { max-width: 560px; margin: 44px auto 0; background: #fff; border: 2px solid var(--accent); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; }
.price-top { background: var(--accent); color: #fff; padding: 26px 32px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.price-top h3 { color: #fff; font-size: 1.4rem; }
.price-top .p { display: flex; align-items: baseline; gap: 8px; }
.price-top .now { font-size: 2.4rem; font-weight: 800; font-family: var(--font-display); }
.price-top .was { opacity: .7; text-decoration: line-through; }
.price-body { padding: 30px 32px 34px; }
.price-body ul { list-style: none; display: grid; gap: 13px; margin-bottom: 26px; }
.price-body li { display: flex; gap: 12px; align-items: flex-start; }
.price-body svg { flex: none; margin-top: 3px; color: var(--accent); }
.price-body .btn { width: 100%; justify-content: center; }
.guarantee { text-align: center; margin-top: 16px; font-size: 0.88rem; color: var(--ink-soft); }
.checkout-status { text-align: center; margin-top: 14px; min-height: 1.3em; font-size: 0.92rem; color: var(--ink-soft); }
.checkout-err { color: #a3372c; }
.checkout-spinner {
  display: inline-block; width: 13px; height: 13px; margin-right: 7px;
  vertical-align: -2px; border: 2px solid var(--line);
  border-top-color: var(--accent); border-radius: 50%;
  animation: checkout-spin 0.7s linear infinite;
}
@keyframes checkout-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .checkout-spinner { animation: none; } }

/* ---- Mini-guides: hub grid + detail pages ---- */
.crumbs { font-size: 0.88rem; color: var(--ink-soft); margin-bottom: 20px; }
.crumbs a { color: var(--ink-soft); }
.crumbs a:hover { color: var(--accent); }
.crumbs span { margin: 0 6px; opacity: .5; }

.guide-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 26px; margin-top: 48px; text-align: left; }
.guide-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .2s, box-shadow .2s; }
.guide-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
@media (prefers-reduced-motion: reduce) { .guide-card:hover { transform: none; } }
.guide-card > a.gc-thumb { display: block; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.guide-card img { display: block; width: 100%; height: auto; }
.gc-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.gc-kicker { font-size: 0.76rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.gc-body h3 { font-size: 1.22rem; margin-bottom: 8px; line-height: 1.2; }
.gc-body h3 a { color: var(--ink); }
.gc-body h3 a:hover { color: var(--accent); text-decoration: none; }
.gc-desc { color: var(--ink-soft); font-size: 0.96rem; flex: 1; }
.gc-meta { display: flex; align-items: baseline; gap: 10px; margin: 16px 0 14px; }
.gc-price { font-family: var(--font-display); font-size: 1.6rem; font-weight: 800; color: var(--ink); }
.gc-pages { font-size: 0.88rem; color: var(--ink-soft); }
.gc-body .btn { width: 100%; justify-content: center; }
.gc-body .checkout-status { margin-top: 10px; font-size: 0.86rem; }
.gc-more { display: inline-block; margin-top: 12px; font-size: 0.9rem; font-weight: 600; }

/* Detail page hero */
.guide-hero { padding: clamp(40px, 6vw, 76px) 0 clamp(32px, 4vw, 56px); }
.guide-hero-grid { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 820px) { .guide-hero-grid { grid-template-columns: 1fr; } }
.guide-cover { border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 100%; height: auto; display: block; }
.guide-hero h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); margin-bottom: 14px; }
.guide-sub { font-size: 1.16rem; color: var(--ink-soft); max-width: 62ch; }
.guide-buybox { margin-top: 30px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-alt); max-width: 460px; }
.guide-buybox .p { display: flex; align-items: baseline; gap: 10px; margin-bottom: 16px; }
.guide-buybox .now { font-family: var(--font-display); font-size: 2.2rem; font-weight: 800; }
.guide-buybox .unit { color: var(--ink-soft); font-size: 0.95rem; }
.guide-buybox .btn { width: 100%; justify-content: center; }

/* Terms clickwrap next to every buy button */
.tos-check { display: flex; align-items: flex-start; gap: 10px; margin: 0 0 16px; text-align: left; cursor: pointer; }
.tos-check input { flex: none; width: 18px; height: 18px; margin-top: 2px; accent-color: var(--accent); cursor: pointer; }
.tos-check span { font-size: 0.88rem; color: var(--ink-soft); line-height: 1.45; }
.tos-check a { font-weight: 600; }

/* Legal / terms prose */
.legal { max-width: 760px; }
.legal h1 { font-size: clamp(1.9rem, 3.6vw, 2.6rem); margin-bottom: 14px; }
.legal h2 { font-size: 1.22rem; margin: 38px 0 10px; color: var(--ink); }
.legal p { color: var(--ink-soft); margin-bottom: 14px; max-width: 72ch; }
.legal strong { color: var(--ink); }
.legal-meta { font-size: 0.92rem; color: var(--ink-soft); }
.legal-callout { margin: 26px 0 8px; padding: 20px 24px; background: var(--accent-light); border-radius: var(--radius); }
.legal-callout p { margin: 0; color: var(--ink); }

.inside-list { max-width: 760px; margin: 28px auto 0; display: grid; gap: 12px; text-align: left; list-style: none; }
.inside-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-soft); }
.inside-list svg { flex: none; margin-top: 4px; color: var(--accent); }
.evidence-note { max-width: 760px; margin: 30px auto 0; font-size: 0.92rem; color: var(--ink-soft); }

/* FAQ */
.faq-list { max-width: 760px; margin: 40px auto 0; display: grid; gap: 12px; }
details { background: var(--bg-alt); border: 1px solid var(--line); border-radius: 12px; padding: 4px 22px; }
details[open] { background: #fff; box-shadow: var(--shadow-sm); }
summary { cursor: pointer; font-weight: 650; font-size: 1.05rem; padding: 18px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.5rem; color: var(--accent); font-weight: 400; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { padding: 0 0 20px; color: var(--ink-soft); }

/* Final CTA */
.finalcta { background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%); color: #fff; text-align: center; }
.finalcta h2 { color: #fff; }
.finalcta .lead { color: #d9ece6; margin: 18px auto 30px; }
.finalcta .btn-primary { background: #fff; color: var(--accent); box-shadow: 0 10px 30px rgba(0,0,0,.2); }
.finalcta .btn-primary:hover { background: #f0f7f4; }

/* Footer */
footer { background: #16211d; color: #b9c7c1; padding: 52px 0 34px; font-size: 0.92rem; }
.foot-grid { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; }
.foot-brand { max-width: 320px; }
.foot-brand .brand { color: #fff; margin-bottom: 12px; }
.foot-cols { display: flex; gap: 56px; flex-wrap: wrap; }
.foot-col h4 { color: #fff; font-size: 0.86rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 14px; font-family: var(--font); }
.foot-col a { display: block; color: #b9c7c1; margin-bottom: 9px; }
.foot-col a:hover { color: #fff; }
.foot-legal { border-top: 1px solid rgba(255,255,255,.12); margin-top: 40px; padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.84rem; color: #8a9993; }
.foot-disclaimer { max-width: 720px; font-size: 0.8rem; color: #8a9993; margin-top: 14px; line-height: 1.5; }

/* Article / long-form (the /learn cluster). Deliberately NOT gated behind
   .reveal so the prose renders without JS, for crawlers and AI answer engines. */
.article-hero { padding: clamp(36px, 6vw, 72px) 0 clamp(20px, 3vw, 34px); }
.article-hero .wrap { max-width: 760px; }
.article-eyebrow { font-size: 0.82rem; font-weight: 650; letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent); }
.article-hero h1 { font-size: clamp(2rem, 4.4vw, 3rem); margin: 12px 0 0; text-wrap: balance; }
.article-dek { font-size: 1.2rem; color: var(--ink-soft); line-height: 1.5; margin-top: 18px; max-width: 62ch; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin-top: 22px; font-size: 0.86rem; color: var(--ink-soft); }
.article-meta .badge-cited { display: inline-flex; align-items: center; gap: 6px; font-weight: 650; color: var(--accent); }
.article-meta .badge-cited svg { flex: none; }

.article { max-width: 720px; margin: 0 auto; padding: 8px 0 8px; }
.article > p { font-size: 1.075rem; line-height: 1.75; color: var(--ink); margin: 0 0 1.25em; }
.article h2 { font-size: clamp(1.5rem, 3vw, 1.9rem); margin: 1.9em 0 .5em; text-wrap: balance; }
.article h3 { font-size: 1.22rem; margin: 1.6em 0 .4em; }
.article ul, .article ol { margin: 0 0 1.35em; padding-left: 1.35em; }
.article li { font-size: 1.075rem; line-height: 1.7; color: var(--ink); margin-bottom: .55em; }
.article a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; }
.article a:hover { color: var(--accent); }
.article strong { color: var(--ink); font-weight: 700; }
.article sup { line-height: 0; }
.article sup a { text-decoration: none; font-weight: 650; padding: 0 1px; }
.article blockquote { margin: 1.5em 0; padding: 20px 24px; background: var(--bg-alt); border-radius: var(--radius); font-size: 1.1rem; line-height: 1.5; color: var(--ink); font-family: var(--font-display); }

.key-takeaways { background: var(--accent-light); border-radius: var(--radius); padding: 24px 28px; margin: 0 auto 40px; max-width: 720px; }
.key-takeaways h2 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: 0.05em; margin: 0 0 12px; color: var(--accent-dark); }
.key-takeaways ul { margin: 0; padding-left: 1.25em; }
.key-takeaways li { color: var(--ink); line-height: 1.6; margin-bottom: .5em; font-size: 1rem; }

.article-cta { max-width: 720px; margin: 40px auto; background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px 30px; }
.article-cta .k { font-size: 0.82rem; font-weight: 650; letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent); }
.article-cta h3 { font-size: 1.3rem; margin: 8px 0 8px; }
.article-cta p { color: var(--ink-soft); margin: 0 0 18px; font-size: 1rem; line-height: 1.6; }

.references { max-width: 720px; margin: 48px auto 0; }
.references h2 { font-size: 1.15rem; margin-bottom: 16px; }
.references ol { margin: 0; padding-left: 1.5em; }
.references li { font-size: 0.86rem; color: var(--ink-soft); line-height: 1.5; margin-bottom: 10px; }
.references a { color: var(--accent-dark); word-break: break-word; }

/* Research roundup items */
.rr-list .rr-item { padding: 22px 0; border-bottom: 1px solid var(--line); }
.rr-list .rr-item:last-child { border-bottom: none; }
.rr-item h2 { font-size: 1.28rem; line-height: 1.3; margin: 0 0 6px; }
.rr-item h2 a { color: var(--ink); text-decoration: none; }
.rr-item h2 a:hover { color: var(--accent); text-decoration: underline; }
.rr-preprint { display: inline-block; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent-dark); background: var(--accent-light); border-radius: 100px; padding: 2px 9px; vertical-align: middle; margin-left: 6px; }
.rr-meta { font-size: 0.86rem; color: var(--ink-soft); margin: 0 0 12px; }
.rr-item > p { font-size: 1.02rem; line-height: 1.65; color: var(--ink); margin: 0 0 10px; }
.rr-why { color: var(--ink-soft); }
.rr-source a { font-weight: 650; color: var(--accent-dark); }

/* Learn hub cards */
.learn-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-top: 44px; text-align: left; }
.learn-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; transition: border-color .2s, transform .2s; }
.learn-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.learn-card .lc-kicker { font-size: 0.78rem; font-weight: 650; letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.learn-card h3 { font-size: 1.2rem; line-height: 1.26; margin-bottom: 10px; }
.learn-card h3 a { color: var(--ink); }
.learn-card h3 a:hover { color: var(--accent); }
.learn-card p { color: var(--ink-soft); font-size: 0.96rem; line-height: 1.55; margin-bottom: 16px; }
.learn-card .lc-more { margin-top: auto; font-weight: 650; color: var(--accent); font-size: 0.92rem; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8efec; --ink-soft: #a7b6b0; --bg: #101613; --bg-alt: #172420;
    --line: #26352f; --accent-light: #1c2c27;
  }
  body { background: var(--bg); }
  .nav { background: rgba(16,22,19,.82); }
  .brand, h1, h2, h3 { color: var(--ink); }
  .hero { background: radial-gradient(1200px 500px at 80% -10%, #16302a 0%, rgba(22,48,42,0) 60%), linear-gradient(180deg, #121a17 0%, #101613 100%); }
  .hero-cover, .hero-badge { border-color: var(--line); }
  .hero-badge, .feature, .rev-card, .price-card, details[open] { background: #172420; }
  .cite, .problem-card, details { background: #172420; }
  .preview-strip img { background: #fff; }
  .price-card { border-color: var(--accent-bright); }
  .rev-verified { color: var(--accent-bright); }
  .article a, .references a { color: var(--accent-bright); }
  .key-takeaways h2 { color: var(--accent-bright); }
  .rr-preprint { color: var(--accent-bright); }
  .rr-source a { color: var(--accent-bright); }
  .article blockquote, .key-takeaways, .article-cta { background: #172420; }
  .learn-card { background: #172420; }
}