/* The Peptide Vault — shared stylesheet
   No external fonts or CDNs. System font stack only. */

:root {
  --slate-900: #0f2027;
  --slate-800: #14313a;
  --teal-700: #135e63;
  --teal-600: #1a7d83;
  --teal-500: #24a0a6;
  --teal-050: #e8f5f5;
  --ink: #1a2327;
  --ink-soft: #47575e;
  --line: #e2e8ea;
  --bg: #ffffff;
  --bg-soft: #f6f9f9;
  --amber: #b06f19;
  --amber-bg: #fdf6ea;
  --green: #1f7a4d;
  --red: #b23a3a;
  --maxw: 720px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 18px;
}

/* ---------- Header / nav ---------- */
.site-header {
  background: linear-gradient(135deg, var(--slate-900), var(--teal-700));
  color: #fff;
}
.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #fff;
}
.brand .mark {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: var(--teal-500);
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 18px;
  color: #04262a;
}
.brand .name { font-weight: 800; font-size: 20px; letter-spacing: -0.2px; }
.nav-links { display: flex; gap: 22px; flex-wrap: wrap; }
.nav-links a {
  color: #d6ecec;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
}
.nav-links a:hover { color: #fff; }

/* ---------- Layout ---------- */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 22px; }
.reading { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

main { display: block; }

/* ---------- Hero ---------- */
.hero {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  padding: 58px 0 46px;
}
.hero h1 {
  font-size: 40px;
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -0.6px;
  color: var(--slate-900);
}
.hero p { font-size: 20px; color: var(--ink-soft); margin: 0; max-width: 640px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 13px;
  font-weight: 700;
  color: var(--teal-600);
  margin: 0 0 14px;
}

/* ---------- Cards ---------- */
.section-title {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--ink-soft);
  font-weight: 700;
  margin: 48px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}
.card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px 24px;
  background: #fff;
  transition: box-shadow .18s ease, transform .18s ease, border-color .18s ease;
  display: flex;
  flex-direction: column;
}
.card:hover {
  box-shadow: 0 10px 30px rgba(15,32,39,.08);
  transform: translateY(-2px);
  border-color: #cfe0e0;
}
.card .tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--teal-700);
  background: var(--teal-050);
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.card h3 { margin: 0 0 10px; font-size: 21px; line-height: 1.3; letter-spacing: -0.3px; }
.card h3 a { color: var(--slate-900); text-decoration: none; }
.card h3 a:hover { color: var(--teal-600); }
.card p { margin: 0 0 18px; color: var(--ink-soft); font-size: 16px; }
.card .more { margin-top: auto; font-weight: 700; color: var(--teal-600); font-size: 15px; text-decoration: none; }
.card .more:hover { text-decoration: underline; }

/* ---------- Article ---------- */
article { padding: 44px 0 20px; }
article .kicker {
  color: var(--teal-600);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.3px;
  font-size: 13px;
  margin: 0 0 12px;
}
article h1 {
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin: 0 0 12px;
  color: var(--slate-900);
}
article .byline { color: var(--ink-soft); font-size: 15px; margin: 0 0 28px; }
article h2 {
  font-size: 25px;
  line-height: 1.25;
  letter-spacing: -0.3px;
  margin: 40px 0 14px;
  color: var(--slate-800);
}
article h3 { font-size: 20px; margin: 28px 0 10px; color: var(--slate-800); }
article p { margin: 0 0 18px; }
article ul, article ol { margin: 0 0 18px; padding-left: 26px; }
article li { margin-bottom: 8px; }
article a { color: var(--teal-600); }
article strong { color: var(--ink); }
article hr { border: none; border-top: 1px solid var(--line); margin: 34px 0; }

/* Tables */
.table-scroll { overflow-x: auto; margin: 0 0 22px; -webkit-overflow-scrolling: touch; }
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 15px;
  min-width: 480px;
}
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); }
th { background: var(--bg-soft); font-weight: 700; color: var(--slate-800); }
tbody tr:last-child td { border-bottom: none; }

/* Callout boxes */
.callout {
  border-radius: 12px;
  padding: 22px 24px;
  margin: 28px 0;
  border: 1px solid var(--line);
  background: var(--bg-soft);
}
.callout .label {
  font-size: 13px; font-weight: 800; text-transform: uppercase;
  letter-spacing: 1px; margin: 0 0 8px;
}
.callout.bottom-line { background: var(--teal-050); border-color: #bfe0e0; }
.callout.bottom-line .label { color: var(--teal-700); }
.callout.bottom-line p:last-child { margin-bottom: 0; }
.callout.disclaimer { background: var(--amber-bg); border-color: #eeddbf; font-size: 15px; }
.callout.disclaimer .label { color: var(--amber); }
.callout.disclaimer p { margin-bottom: 0; color: #6a5326; }

/* Affiliate CTA button */
.cta {
  display: inline-block;
  background: var(--teal-600);
  color: #fff !important;
  text-decoration: none;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 10px;
  margin: 6px 0 8px;
}
.cta:hover { background: var(--teal-700); }
.coupon {
  display: inline-block;
  border: 1px dashed var(--teal-600);
  border-radius: 8px;
  padding: 3px 10px;
  font-weight: 700;
  color: var(--teal-700);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 15px;
}

/* Red-flag / check lists */
.flag-list li::marker { content: "⚑  "; }
.check-list li::marker { content: "✓  "; }

/* Related list */
.related { margin: 40px 0 10px; padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-soft); }
.related h2 { font-size: 18px; margin: 0 0 12px; }
.related ul { margin: 0; padding-left: 20px; }
.related a { font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--slate-900);
  color: #b9cccd;
  margin-top: 64px;
  padding: 44px 0 30px;
  font-size: 15px;
}
.footer-grid {
  max-width: 1080px; margin: 0 auto; padding: 0 22px;
  display: flex; flex-wrap: wrap; gap: 28px; justify-content: space-between;
}
.footer-brand { max-width: 340px; }
.footer-brand .name { color: #fff; font-weight: 800; font-size: 18px; }
.footer-brand p { margin: 8px 0 0; color: #8fa9ab; }
.footer-col h4 { color: #dfeeee; font-size: 14px; text-transform: uppercase; letter-spacing: 1px; margin: 0 0 12px; }
.footer-col a { display: block; color: #b9cccd; text-decoration: none; margin-bottom: 8px; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  max-width: 1080px; margin: 30px auto 0; padding: 20px 22px 0;
  border-top: 1px solid #23424a; color: #7f9698; font-size: 13.5px;
}
.footer-bottom a { color: #a9c4c5; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  body { font-size: 17px; }
  .hero { padding: 40px 0 34px; }
  .hero h1 { font-size: 30px; }
  .hero p { font-size: 18px; }
  article h1 { font-size: 27px; }
  article h2 { font-size: 22px; }
  .nav { padding: 14px 18px; }
  .nav-links { gap: 16px; }
}