*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --teal: #0a7b8c; --teal-dark: #065f6e; --teal-light: #e6f4f6;
  --dark: #0f1f2d; --text: #374151; --muted: #6b7280;
  --border: #e5e7eb; --white: #ffffff; --bg: #f8fafc;
  --font: 'Inter', sans-serif; --serif: 'Playfair Display', serif;
}
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; }

/* Nav */
.post-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.post-nav .logo {
  font-family: var(--serif); font-size: 1.15rem; font-weight: 700;
  color: var(--dark); text-decoration: none; flex-shrink: 0;
}
.nav-right { display: flex; align-items: center; gap: 8px; }
.nav-link {
  font-size: .85rem; font-weight: 500; color: var(--muted);
  text-decoration: none; padding: 6px 12px; border-radius: 6px;
  transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--dark); background: var(--bg); }
.back-btn {
  display: flex; align-items: center; gap: 6px;
  font-size: .85rem; font-weight: 600; color: var(--teal);
  text-decoration: none; padding: 7px 14px;
  border: 1.5px solid var(--teal-light); border-radius: 7px;
  transition: background .2s; white-space: nowrap;
}
.back-btn:hover { background: var(--teal-light); }

/* Hero */
.post-hero {
  background: linear-gradient(135deg, #065f6e, #0a7b8c, #0e9aad);
  padding: 64px 24px 56px;
  text-align: center;
}
.post-tag {
  display: inline-block; font-size: .72rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--white); background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.3);
  padding: 4px 16px; border-radius: 99px; margin-bottom: 20px;
}
.post-hero h1 {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  color: var(--white); line-height: 1.25;
  max-width: 800px; margin: 0 auto 20px;
}
.post-meta {
  display: flex; gap: 16px; justify-content: center;
  flex-wrap: wrap; font-size: .85rem; color: rgba(255,255,255,.75);
}
.post-meta strong { color: rgba(255,255,255,.95); font-weight: 600; }

/* Content */
.post-body {
  max-width: 740px; margin: 0 auto;
  padding: 56px 24px 80px;
}
.post-body p { font-size: 1rem; line-height: 1.85; color: var(--text); margin-bottom: 22px; }
.post-body h3 {
  font-family: var(--serif); font-size: 1.3rem;
  color: var(--dark); margin: 40px 0 14px;
  padding-left: 16px;
  border-left: 3px solid var(--teal);
}
.post-body ul { margin-bottom: 22px; }
.post-body ul li {
  position: relative; padding-left: 20px;
  margin-bottom: 12px; font-size: .97rem; line-height: 1.75;
}
.post-body ul li::before {
  content: '·'; position: absolute; left: 0;
  color: var(--teal); font-size: 1.5rem; line-height: 1; top: 1px;
}

/* Share bar */
.share-bar {
  background: var(--white); border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px; margin-bottom: 48px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  max-width: 740px; margin: 0 auto 48px;
}
.share-bar span { font-size: .85rem; font-weight: 600; color: var(--muted); }
.sh-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 7px;
  font-size: .82rem; font-weight: 600; cursor: pointer;
  border: 1.5px solid var(--border); background: var(--white);
  color: var(--dark); text-decoration: none;
  transition: background .2s, border-color .2s, color .2s;
}
.sh-btn:hover { background: var(--teal-light); border-color: var(--teal); color: var(--teal-dark); }
.sh-btn.copied { background: var(--teal); border-color: var(--teal); color: #fff; }

/* CTA */
.post-cta {
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  border-radius: 16px; padding: 40px; text-align: center;
  max-width: 740px; margin: 0 auto 80px;
}
.post-cta h3 { font-family: var(--serif); font-size: 1.4rem; color: #fff; margin-bottom: 10px; }
.post-cta p { color: rgba(255,255,255,.8); font-size: .93rem; margin-bottom: 24px; }
.post-cta a {
  display: inline-block; background: #fff; color: var(--teal);
  font-weight: 700; font-size: .9rem; padding: 12px 28px;
  border-radius: 8px; text-decoration: none;
  transition: transform .15s, box-shadow .2s;
}
.post-cta a:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.2); }

/* Read More */
.read-more-section {
  max-width: 740px; margin: 0 auto 60px; padding: 0 24px;
}
.read-more-section h3 {
  font-family: var(--serif); font-size: 1.2rem; color: var(--dark);
  margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--border);
}
.read-more-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.rm-card {
  display: block; text-decoration: none;
  background: var(--bg); border: 1.5px solid var(--border);
  border-radius: 12px; padding: 20px;
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.rm-card:hover {
  border-color: var(--teal); box-shadow: 0 4px 20px rgba(10,123,140,.12);
  transform: translateY(-2px);
}
.rm-tag {
  display: inline-block; font-size: .68rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--teal); background: var(--teal-light);
  padding: 3px 10px; border-radius: 99px; margin-bottom: 10px;
}
.rm-card h4 {
  font-family: var(--serif); font-size: .97rem; color: var(--dark);
  line-height: 1.4; margin-bottom: 10px;
}
.rm-meta { font-size: .78rem; color: var(--muted); }

/* Footer */
.post-footer {
  background: #0f1f2d; padding: 48px 24px;
  text-align: center;
}
.post-footer .footer-inner { max-width: 680px; margin: 0 auto; }
.post-footer .footer-name {
  font-family: var(--serif); font-size: 1.4rem;
  color: var(--white); margin-bottom: 8px;
}
.post-footer .footer-sub {
  color: rgba(255,255,255,.5); font-size: .83rem;
  margin-bottom: 24px; line-height: 1.6;
}
.post-footer .footer-links {
  display: flex; gap: 20px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 24px;
}
.post-footer .footer-links a {
  color: rgba(255,255,255,.6); font-size: .85rem;
  text-decoration: none; transition: color .2s;
}
.post-footer .footer-links a:hover { color: var(--white); }
.post-footer .footer-copy {
  color: rgba(255,255,255,.3); font-size: .75rem;
}

@media (max-width: 600px) {
  .post-nav { padding: 0 16px; }
  .nav-link { display: none; }
  .post-hero { padding: 48px 20px 40px; }
  .post-body { padding: 36px 20px 60px; }
  .share-bar { padding: 16px 20px; }
  .post-cta { padding: 28px 20px; margin: 0 20px 60px; }
  .read-more-section { padding: 0 20px; }
  .read-more-grid { grid-template-columns: 1fr; }
}