/* ============================================================
   BIOACTIVE COMPOUNDS — BLOG STYLESHEET
   Cormorant (display) + Switzer (body) via Google Fonts CDN
   Brand: White #FFFFFF · Navy #0F1C35 · Navy Deep #060C1A · Silver #B8C2D4
   ============================================================ */

/* ─── DESIGN TOKENS ─────────────────────────────────────────── */
:root {
  /* Brand palette */
  --navy:        #0F1C35;
  --navy-deep:   #060C1A;
  --silver:      #B8C2D4;
  --white:       #FFFFFF;
  --accent:      #4A8FD4;   /* mid-blue accent for links / CTAs */
  --amber:       #D97706;   /* disclaimer banner */
  --amber-bg:    #FEF3C7;
  --amber-border:#F59E0B;
  --green-badge: #065F46;
  --green-bg:    #D1FAE5;

  /* Text */
  --text-on-dark:   #E8EDF5;
  --text-muted:     #8A97B0;
  --text-faint:     #B8C2D4;

  /* Type scale (fluid clamp) */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing */
  --sp-1: 0.25rem; --sp-2: 0.5rem;  --sp-3: 0.75rem; --sp-4: 1rem;
  --sp-5: 1.25rem; --sp-6: 1.5rem;  --sp-8: 2rem;    --sp-10: 2.5rem;
  --sp-12: 3rem;   --sp-16: 4rem;   --sp-20: 5rem;   --sp-24: 6rem;

  /* Radius */
  --r-sm: 0.375rem; --r-md: 0.5rem; --r-lg: 0.75rem; --r-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(6,12,26,0.15);
  --shadow-md: 0 4px 16px rgba(6,12,26,0.2);
  --shadow-lg: 0 12px 40px rgba(6,12,26,0.28);

  /* Content widths */
  --content-narrow: 680px;
  --content-default: 900px;
  --content-wide: 1180px;

  /* Fonts */
  --font-display: 'Cormorant', 'Georgia', serif;
  --font-body:    'Switzer', 'Inter', 'Helvetica Neue', sans-serif;

  /* Transition */
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── BASE RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--sp-20);
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--white);
  background: var(--navy-deep);
  line-height: 1.7;
  min-height: 100dvh;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.2; }
p, li, figcaption { text-wrap: pretty; }
button { cursor: pointer; background: none; border: none; }

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #7AAFEE; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ─── NAVIGATION ─────────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6,12,26,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(184,194,212,0.12);
  transition: box-shadow var(--transition);
}
.site-nav--scrolled { box-shadow: var(--shadow-md); }

.nav-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--sp-4) var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  list-style: none;
  flex-wrap: wrap;
}
.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-faint);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-md);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,0.07); }
.nav-links a.active { color: var(--white); background: rgba(74,143,212,0.18); }

.nav-cta {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--white) !important;
  background: var(--accent) !important;
  padding: var(--sp-2) var(--sp-5) !important;
  border-radius: var(--r-xl) !important;
}
.nav-cta:hover { background: #3A7FC4 !important; }

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-2);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--silver);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--navy-deep);
    border-bottom: 1px solid rgba(184,194,212,0.12);
    padding: var(--sp-4) var(--sp-6);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-2);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: var(--sp-3) var(--sp-4); width: 100%; }
  .nav-cta { display: none !important; }
}

/* ─── ARTICLE HERO ───────────────────────────────────────────── */
.article-hero {
  background: linear-gradient(165deg, var(--navy) 0%, var(--navy-deep) 60%);
  padding: clamp(var(--sp-16), 8vw, var(--sp-24)) var(--sp-6) clamp(var(--sp-12), 6vw, var(--sp-20));
  position: relative;
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 40%, rgba(74,143,212,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.article-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(184,194,212,0.2), transparent);
}

.article-hero__inner {
  max-width: var(--content-narrow);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.article-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(74,143,212,0.35);
  background: rgba(74,143,212,0.1);
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--r-xl);
  margin-bottom: var(--sp-5);
}

.article-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: var(--sp-5);
  letter-spacing: -0.01em;
}

.article-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--text-muted);
  margin-bottom: var(--sp-8);
  max-width: 60ch;
  line-height: 1.6;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-5);
}
.article-meta__item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  color: var(--text-faint);
  letter-spacing: 0.03em;
}
.article-meta__item svg { opacity: 0.6; }

/* ─── DISCLAIMER BANNER ──────────────────────────────────────── */
.disclaimer-banner {
  background: var(--amber-bg);
  border-top: 3px solid var(--amber-border);
  padding: var(--sp-4) var(--sp-6);
}
.disclaimer-banner__inner {
  max-width: var(--content-narrow);
  margin: 0 auto;
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
}
.disclaimer-banner__icon {
  flex-shrink: 0;
  color: var(--amber);
  margin-top: 2px;
}
.disclaimer-banner p {
  font-size: var(--text-sm);
  color: #92400E;
  font-weight: 500;
  max-width: 100%;
}
.disclaimer-banner strong { color: #78350F; }

/* ─── ARTICLE LAYOUT ─────────────────────────────────────────── */
.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: clamp(var(--sp-10), 5vw, var(--sp-16)) var(--sp-6);
  gap: var(--sp-10);
}

@media (min-width: 1024px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: start;
  }
}

/* ─── ARTICLE BODY ───────────────────────────────────────────── */
.article-body {
  min-width: 0;
}

.article-body .article-intro {
  font-size: var(--text-lg);
  color: var(--text-on-dark);
  line-height: 1.75;
  margin-bottom: var(--sp-12);
  padding-bottom: var(--sp-8);
  border-bottom: 1px solid rgba(184,194,212,0.15);
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--white);
  margin-top: var(--sp-12);
  margin-bottom: var(--sp-5);
  padding-top: var(--sp-8);
  border-top: 1px solid rgba(184,194,212,0.1);
  letter-spacing: -0.01em;
  scroll-margin-top: var(--sp-20);
}
.article-body h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }

.article-body h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-on-dark);
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-3);
  letter-spacing: -0.01em;
}

.article-body p {
  color: #C8D3E8;
  line-height: 1.75;
  margin-bottom: var(--sp-5);
  max-width: 70ch;
}

.article-body ul, .article-body ol {
  margin: var(--sp-4) 0 var(--sp-6) var(--sp-6);
  color: #C8D3E8;
}
.article-body li {
  margin-bottom: var(--sp-2);
  line-height: 1.6;
  max-width: 68ch;
}

.article-body strong { color: var(--white); font-weight: 600; }
.article-body em { color: var(--silver); font-style: italic; }

/* Data / stat callout */
.stat-callout {
  background: rgba(74,143,212,0.08);
  border-left: 3px solid var(--accent);
  padding: var(--sp-4) var(--sp-6);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  margin: var(--sp-6) 0;
}
.stat-callout p { color: var(--text-on-dark); margin: 0; font-size: var(--text-sm); }
.stat-callout strong { font-size: var(--text-base); color: var(--accent); }

/* Answer capsule (120-150 word blocks) */
.answer-capsule {
  background: rgba(15,28,53,0.6);
  border: 1px solid rgba(184,194,212,0.12);
  border-radius: var(--r-lg);
  padding: var(--sp-6) var(--sp-8);
  margin: var(--sp-4) 0 var(--sp-8);
}
.answer-capsule p { color: var(--text-on-dark); max-width: 100%; margin: 0; }

/* Evidence tier badge */
.evidence-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--r-xl);
  margin-bottom: var(--sp-3);
}
.evidence-badge--a { background: rgba(6,95,70,0.25); color: #34D399; border: 1px solid rgba(52,211,153,0.3); }
.evidence-badge--b { background: rgba(37,99,235,0.2); color: #93C5FD; border: 1px solid rgba(147,197,253,0.3); }
.evidence-badge--c { background: rgba(120,53,15,0.3); color: #FCD34D; border: 1px solid rgba(252,211,77,0.3); }
.evidence-badge--d { background: rgba(75,85,99,0.3); color: #D1D5DB; border: 1px solid rgba(209,213,219,0.3); }

/* ─── TABLES ─────────────────────────────────────────────────── */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--sp-6) 0 var(--sp-8);
  font-size: var(--text-sm);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid rgba(184,194,212,0.12);
}
.article-body th {
  background: rgba(15,28,53,0.8);
  color: var(--silver);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: var(--sp-3) var(--sp-5);
  text-align: left;
  border-bottom: 1px solid rgba(184,194,212,0.15);
}
.article-body td {
  padding: var(--sp-3) var(--sp-5);
  color: #C8D3E8;
  border-bottom: 1px solid rgba(184,194,212,0.07);
  vertical-align: top;
}
.article-body tr:last-child td { border-bottom: none; }
.article-body tr:hover td { background: rgba(74,143,212,0.04); }

/* ─── CTA BOXES ──────────────────────────────────────────────── */
.cta-box {
  background: linear-gradient(135deg, rgba(15,28,53,0.9) 0%, rgba(6,12,26,0.95) 100%);
  border: 1px solid rgba(74,143,212,0.25);
  border-radius: var(--r-xl);
  padding: var(--sp-8) var(--sp-10);
  margin: var(--sp-10) 0;
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  flex-wrap: wrap;
}
.cta-box__icon {
  width: 48px;
  height: 48px;
  background: rgba(74,143,212,0.15);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}
.cta-box__content { flex: 1; min-width: 200px; }
.cta-box__content h4 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--sp-1);
}
.cta-box__content p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin: 0;
  max-width: 100%;
}
.cta-box__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--white);
  background: var(--accent);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--r-xl);
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
}
.cta-box__link:hover { background: #3A7FC4; transform: translateY(-1px); color: var(--white); }

.cta-multi {
  background: linear-gradient(135deg, rgba(15,28,53,0.9) 0%, rgba(6,12,26,0.95) 100%);
  border: 1px solid rgba(184,194,212,0.12);
  border-radius: var(--r-xl);
  padding: var(--sp-8) var(--sp-10);
  margin: var(--sp-10) 0;
}
.cta-multi h4 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--sp-5);
}
.cta-multi__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--sp-4);
}
.cta-multi__card {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(184,194,212,0.1);
  border-radius: var(--r-lg);
  padding: var(--sp-5) var(--sp-6);
  transition: border-color var(--transition), background var(--transition);
  text-decoration: none;
}
.cta-multi__card:hover {
  border-color: rgba(74,143,212,0.4);
  background: rgba(74,143,212,0.06);
}
.cta-multi__card-title {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--white);
}
.cta-multi__card-desc {
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.cta-multi__card-arrow {
  font-size: var(--text-xs);
  color: var(--accent);
  margin-top: auto;
}

/* ─── FAQ SECTION ────────────────────────────────────────────── */
.faq-section {
  margin-top: var(--sp-16);
  padding-top: var(--sp-10);
  border-top: 1px solid rgba(184,194,212,0.12);
}
.faq-section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--sp-8);
}
.faq-item {
  border-bottom: 1px solid rgba(184,194,212,0.1);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-6) 0;
  text-align: left;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-on-dark);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-question svg {
  flex-shrink: 0;
  color: var(--accent);
  transition: transform var(--transition);
}
.faq-question[aria-expanded="true"] svg { transform: rotate(180deg); }
.faq-answer {
  display: none;
  padding: 0 0 var(--sp-6);
  color: #C8D3E8;
  line-height: 1.75;
  font-size: var(--text-base);
}
.faq-answer.open { display: block; }
.faq-answer p { margin-bottom: var(--sp-3); max-width: 70ch; }
.faq-answer p:last-child { margin-bottom: 0; }

/* ─── AUTHOR BOX ─────────────────────────────────────────────── */
.author-box {
  display: flex;
  gap: var(--sp-5);
  align-items: flex-start;
  background: rgba(15,28,53,0.5);
  border: 1px solid rgba(184,194,212,0.12);
  border-radius: var(--r-xl);
  padding: var(--sp-6) var(--sp-8);
  margin-top: var(--sp-12);
}
.author-box__avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #2D5A8E);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--white);
}
.author-box__info { flex: 1; }
.author-box__name {
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--white);
  margin-bottom: var(--sp-1);
}
.author-box__role {
  font-size: var(--text-xs);
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: var(--sp-2);
}
.author-box__bio {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.6;
}

/* ─── SIDEBAR (TOC) ──────────────────────────────────────────── */
.article-sidebar {
  display: none;
}
@media (min-width: 1024px) {
  .article-sidebar {
    display: block;
    position: sticky;
    top: calc(var(--sp-20) + var(--sp-6));
    align-self: start;
  }
}
.toc-widget {
  background: rgba(15,28,53,0.6);
  border: 1px solid rgba(184,194,212,0.12);
  border-radius: var(--r-xl);
  padding: var(--sp-6);
}
.toc-widget__title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid rgba(184,194,212,0.1);
}
.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list li + li { margin-top: var(--sp-1); }
.toc-list a {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-md);
  line-height: 1.45;
  transition: color var(--transition), background var(--transition);
}
.toc-list a:hover, .toc-list a.active {
  color: var(--accent);
  background: rgba(74,143,212,0.1);
}

/* ─── FOOTER ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--navy-deep);
  border-top: 1px solid rgba(184,194,212,0.1);
  padding: clamp(var(--sp-12), 6vw, var(--sp-20)) var(--sp-6);
  margin-top: var(--sp-20);
}
.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-10);
  margin-bottom: var(--sp-12);
}
@media (min-width: 640px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .footer-top { grid-template-columns: 2fr 1fr 1fr; } }

.footer-brand__logo img { height: 32px; margin-bottom: var(--sp-4); }
.footer-brand__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 36ch;
  margin-bottom: var(--sp-5);
}
.footer-wa-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: #25D366;
  color: var(--white);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--r-xl);
  transition: background var(--transition), transform var(--transition);
}
.footer-wa-btn:hover { background: #1DA851; transform: translateY(-1px); color: var(--white); }

.footer-nav__title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: var(--sp-4);
}
.footer-nav__links { list-style: none; display: flex; flex-direction: column; gap: var(--sp-2); }
.footer-nav__links a {
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-nav__links a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid rgba(184,194,212,0.08);
  padding-top: var(--sp-6);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-4);
}
.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--text-faint);
  max-width: 100%;
}
.footer-bottom__disclaimer {
  font-size: var(--text-xs);
  color: var(--text-faint);
  font-style: italic;
}

/* ─── BLOG INDEX ─────────────────────────────────────────────── */
.blog-hero {
  background: linear-gradient(165deg, var(--navy) 0%, var(--navy-deep) 60%);
  padding: clamp(var(--sp-20), 10vw, var(--sp-32)) var(--sp-6) clamp(var(--sp-16), 8vw, var(--sp-24));
  position: relative;
  overflow: hidden;
  text-align: center;
}
.blog-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 50%, rgba(74,143,212,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.blog-hero__inner { max-width: var(--content-default); margin: 0 auto; position: relative; z-index: 1; }
.blog-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--sp-5);
}
.blog-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--sp-5);
  letter-spacing: -0.02em;
}
.blog-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 52ch;
  margin: 0 auto;
  line-height: 1.6;
}

/* Article Grid */
.article-grid-section {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: clamp(var(--sp-12), 6vw, var(--sp-20)) var(--sp-6);
}
.article-grid-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-4);
  margin-bottom: var(--sp-10);
}
.article-grid-section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--white);
}
.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}
@media (min-width: 640px) { .article-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .article-grid { grid-template-columns: repeat(3, 1fr); } }

.article-card {
  background: rgba(15,28,53,0.5);
  border: 1px solid rgba(184,194,212,0.1);
  border-radius: var(--r-xl);
  padding: var(--sp-7) var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  transition: border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}
.article-card:hover {
  border-color: rgba(74,143,212,0.35);
  background: rgba(15,28,53,0.8);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.article-card__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--r-xl);
  align-self: flex-start;
}
.badge--repair     { background: rgba(6,95,70,0.25);   color: #34D399; border: 1px solid rgba(52,211,153,0.25); }
.badge--gh         { background: rgba(37,99,235,0.2);  color: #93C5FD; border: 1px solid rgba(147,197,253,0.25); }
.badge--longevity  { background: rgba(109,40,217,0.2); color: #C4B5FD; border: 1px solid rgba(196,181,253,0.25); }
.badge--bloodwork  { background: rgba(220,38,38,0.15); color: #FCA5A5; border: 1px solid rgba(252,165,165,0.25); }
.badge--education  { background: rgba(120,53,15,0.25); color: #FCD34D; border: 1px solid rgba(252,211,77,0.25); }

.article-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--white);
  line-height: 1.25;
}
.article-card__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}
.article-card__meta {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--text-faint);
}
.article-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  margin-top: var(--sp-2);
  transition: gap var(--transition);
}
.article-card:hover .article-card__link { gap: var(--sp-2); }

/* ─── UTILITY ────────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}
.text-accent { color: var(--accent); }
.text-silver { color: var(--silver); }