:root {
  --ink: #14181f;
  --muted: #5b6472;
  --line: #e6e8ee;
  --brand: #1b4748;
  --brand-dark: #123536;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --radius: 14px;
  --max: 1080px;
  --shadow-sm: 0 1px 2px rgba(20,24,31,0.06);
  --shadow-md: 0 10px 30px rgba(20,24,31,0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--brand); text-decoration: none; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
img { max-width: 100%; }

/* Header (shared with main site) */
header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: inline-flex; align-items: center; }
.brand svg { height: 30px; width: auto; display: block; }
.brand svg path { fill: var(--brand); }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a.btn { color: #fff; }
.nav-links a.btn:hover { color: #fff; }
.btn {
  display: inline-block; background: var(--brand); color: #fff;
  padding: 12px 22px; border-radius: 10px; font-weight: 600; font-size: 0.95rem;
  border: none; cursor: pointer; box-shadow: 0 1px 2px rgba(18,53,54,0.2);
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease;
}
.btn:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(18,53,54,0.22); }
@media (max-width: 720px) { .nav-links a:not(.btn) { display: none; } }

/* Blog hero */
.blog-hero { padding: 64px 0 40px; text-align: center;
  background: radial-gradient(120% 90% at 50% -20%, #eaf1f0 0%, var(--bg) 58%); }
.blog-hero .wrap { max-width: 720px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.8rem; font-weight: 700; color: var(--brand); margin: 0 0 10px; }
.blog-hero h1 { font-size: clamp(2rem, 4.6vw, 2.8rem); line-height: 1.12; letter-spacing: -0.03em; margin: 0 0 14px; }
.blog-hero p { font-size: 1.08rem; color: var(--muted); margin: 0; }

/* Post grid / cards */
.blog-list { padding: 12px 0 80px; }
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 900px) { .post-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .post-grid { grid-template-columns: 1fr; } }
.post-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px; transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
.post-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: #d7dbe3; }
.post-tag {
  align-self: flex-start; font-size: 0.74rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--brand); background: linear-gradient(135deg, #e7f0ef 0%, #f4f8f7 100%);
  border: 1px solid #e2ebe9; padding: 5px 11px; border-radius: 999px; margin-bottom: 14px;
}
.post-card h3 { margin: 0 0 10px; font-size: 1.18rem; letter-spacing: -0.01em; line-height: 1.35; }
.post-card h3 a { color: var(--ink); }
.post-card h3 a:hover { color: var(--brand); }
.post-card p { margin: 0 0 18px; color: var(--muted); font-size: 0.95rem; flex-grow: 1; }
.post-meta { display: flex; gap: 10px; align-items: center; font-size: 0.83rem; color: var(--muted); margin-top: auto; }
.post-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.post-card .read-more { font-weight: 600; font-size: 0.9rem; margin-top: 14px; display: inline-block; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }

/* Post banner (real photo, Pexels-licensed, free for commercial use) */
.post-banner {
  border-radius: var(--radius); overflow: hidden; margin-bottom: 6px;
  position: relative; height: 320px;
}
.post-banner img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-credit {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 3px 12px; background: rgba(20,24,31,0.45);
  font-size: 0.68rem; font-style: italic; color: rgba(255,255,255,0.85);
  line-height: 1.4; text-align: right;
}
.photo-credit a { color: rgba(255,255,255,0.85); text-decoration: underline; }

/* Single post */
.post-hero { padding: 52px 0 8px; }
.post-hero .wrap { max-width: 760px; }
.back-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.92rem; margin-bottom: 26px; }
.post-hero h1 { font-size: clamp(1.9rem, 4.4vw, 2.6rem); line-height: 1.18; letter-spacing: -0.03em; margin: 0 0 16px; }
.post-hero .post-meta { font-size: 0.92rem; margin-bottom: 0; }

article.post-body { padding: 24px 0 80px; }
article.post-body .wrap { max-width: 760px; }
article.post-body p { color: var(--ink); font-size: 1.06rem; margin: 0 0 20px; }
article.post-body h2 { font-size: 1.4rem; letter-spacing: -0.01em; margin: 40px 0 14px; }
article.post-body h3 { font-size: 1.15rem; margin: 30px 0 12px; }
article.post-body ul, article.post-body ol { color: var(--ink); font-size: 1.06rem; padding-left: 22px; margin: 0 0 20px; }
article.post-body li { margin-bottom: 8px; }
article.post-body blockquote {
  margin: 28px 0; padding: 18px 22px; border-left: 3px solid var(--brand); background: var(--bg-soft);
  border-radius: 0 10px 10px 0; color: var(--ink); font-style: italic;
}
.post-cta { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; text-align: center; margin-top: 46px; }
.post-cta h3 { margin: 0 0 8px; }
.post-cta p { color: var(--muted); margin: 0 0 18px; }

/* Footer (shared with main site) */
footer { background: var(--brand-dark); color: rgba(255,255,255,0.72); padding: 60px 0 28px; }
.footer-top { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap;
  padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer-brand { max-width: 320px; }
.footer-brand svg { height: 26px; width: auto; display: block; }
.footer-brand p { margin: 16px 0 0; font-size: 0.95rem; line-height: 1.65; color: rgba(255,255,255,0.6); }
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h4 { color: #fff; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; margin: 0 0 16px; }
.footer-col a, .footer-col span { display: block; color: rgba(255,255,255,0.7); font-size: 0.93rem; margin-bottom: 11px; text-decoration: none; }
.footer-col a:hover { color: #fff; }
.footer-bottom { padding-top: 22px; margin-top: 22px; font-size: 0.85rem; color: rgba(255,255,255,0.5);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

@media (max-width: 600px) {
  .wrap { padding: 0 18px; }
  .nav { height: 58px; }
  .brand svg { height: 22px; }
  .blog-hero { padding: 44px 0 30px; }
  .post-hero { padding: 36px 0 8px; }
  .footer-top { gap: 32px; }
  .footer-cols { gap: 44px; }
}