/* ACE universal thin blog reading header — 2026-08-28 */
.blog-reading-shell .blog-site-header {
  position: sticky;
  top: 0;
  z-index: 1200;
  background: rgba(255,250,243,.985);
  border-bottom: 1px solid rgba(7,63,54,.14);
  box-shadow: 0 8px 26px rgba(7,63,54,.08);
  backdrop-filter: blur(14px);
}
.blog-reading-shell .blog-site-header .container {
  width: min(calc(100% - 32px), 1180px);
  margin-inline: auto;
}
.blog-reading-shell .blog-header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.blog-reading-shell .blog-logo {
  flex: 0 0 auto;
  text-decoration: none;
}
.blog-reading-shell .blog-logo img {
  display: block;
  width: 182px;
  min-width: 0;
  max-height: 52px;
  object-fit: contain;
}
.blog-reading-shell .blog-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.blog-reading-shell .blog-nav > a,
.blog-reading-shell .blog-nav .nav-dropdown > button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 0;
  background: transparent;
  color: #043f36;
  padding: 10px 8px;
  border-radius: 9px;
  font: inherit;
  font-size: 15px;
  line-height: 1.2;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
}
.blog-reading-shell .blog-nav > a:hover,
.blog-reading-shell .blog-nav .nav-dropdown > button:hover,
.blog-reading-shell .blog-nav > a:focus-visible,
.blog-reading-shell .blog-nav .nav-dropdown > button:focus-visible {
  background: #e5f6ed;
  color: #078a72;
  outline: none;
}
.blog-reading-shell .blog-nav .nav-dropdown { position: relative; }
.blog-reading-shell .blog-nav .nav-dropdown > button::after { content: "⌄"; font-size: .9em; }
.blog-reading-shell .blog-nav .dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 250px;
  padding: 9px;
  background: #fff;
  border: 1px solid rgba(7,63,54,.16);
  border-radius: 14px;
  box-shadow: 0 18px 46px rgba(7,63,54,.16);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-7px);
  transition: .18s ease;
}
.blog-reading-shell .blog-nav .nav-dropdown:hover .dropdown-menu,
.blog-reading-shell .blog-nav .nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.blog-reading-shell .blog-nav .dropdown-menu a {
  display: block;
  padding: 9px 11px;
  border-radius: 8px;
  color: #043f36;
  text-decoration: none;
  font-size: 14px;
  line-height: 1.35;
  font-weight: 680;
}
.blog-reading-shell .blog-nav .dropdown-menu a:hover { background: #e5f6ed; }
.blog-reading-shell .blog-nav-actions { flex: 0 0 auto; }
.blog-reading-shell .blog-book {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 8px 14px;
  border-radius: 10px;
  background: linear-gradient(135deg,#078a72,#076554);
  color: #fff !important;
  text-decoration: none !important;
  font-size: 13px;
  line-height: 1.15;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(7,101,84,.20);
}
.blog-reading-shell .blog-book:hover { background: linear-gradient(135deg,#043f36,#078a72); }
.blog-reading-shell .blog-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(7,63,54,.16);
  border-radius: 10px;
  background: #fff;
  color: #043f36;
  cursor: pointer;
}
.blog-reading-shell .blog-menu-toggle span,
.blog-reading-shell .blog-menu-toggle::before,
.blog-reading-shell .blog-menu-toggle::after {
  content: "";
  display: block;
  width: 19px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}
@media (max-width: 1100px) and (min-width: 901px) {
  .blog-reading-shell .blog-logo img { width: 158px; max-height: 48px; }
  .blog-reading-shell .blog-header-inner { gap: 12px; }
  .blog-reading-shell .blog-nav > a,
  .blog-reading-shell .blog-nav .nav-dropdown > button { padding-inline: 6px; font-size: 13.5px; }
  .blog-reading-shell .blog-book { padding-inline: 11px; font-size: 12px; }
}
@media (max-width: 900px) {
  .blog-reading-shell .blog-header-inner { min-height: 64px; }
  .blog-reading-shell .blog-logo img { width: 170px; max-height: 48px; }
  .blog-reading-shell .blog-menu-toggle { display: block; margin-left: auto; }
  .blog-reading-shell .blog-nav-actions { display: none; }
  .blog-reading-shell .blog-nav {
    position: fixed;
    inset: 64px 0 auto 0;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 4px;
    padding: 16px 18px 26px;
    background: #fffaf3;
    border-bottom: 1px solid rgba(7,63,54,.16);
    box-shadow: 0 18px 46px rgba(7,63,54,.16);
  }
  .blog-reading-shell .blog-nav.is-open { display: flex; }
  .blog-reading-shell .blog-nav > a,
  .blog-reading-shell .blog-nav .nav-dropdown > button {
    width: 100%;
    justify-content: flex-start;
    padding: 12px 13px;
    font-size: 16px;
    text-align: left;
  }
  .blog-reading-shell .blog-nav .dropdown-menu {
    position: static;
    display: none;
    min-width: 0;
    margin: 2px 0 8px 12px;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
  }
  .blog-reading-shell .blog-nav .nav-dropdown.is-open .dropdown-menu { display: block; }
  .blog-reading-shell .blog-nav .nav-dropdown:hover .dropdown-menu { display: none; }
  .blog-reading-shell .blog-nav .nav-dropdown.is-open:hover .dropdown-menu { display: block; }
}
@media (max-width: 520px) {
  .blog-reading-shell .blog-site-header .container { width: min(calc(100% - 22px),1180px); }
  .blog-reading-shell .blog-logo img { width: 150px; }
}
@media print {
  .blog-reading-shell .blog-site-header { display: none !important; }
}
/* ACE blog-card visual reliability hotfix — 2026-09-17 */
.blog-reading-shell .blog-thumb--image {
  min-height: 185px;
  height: 185px;
  background: #f7faf9;
}
.blog-reading-shell .blog-thumb--image::after { display: none; }
.blog-reading-shell .blog-thumb--image .ace-blog-card-image {
  width: 100%;
  height: 100%;
  min-height: 185px;
  object-fit: cover;
  display: block;
}
.blog-reading-shell .blog-thumb--image .blog-thumb-fallback { display: none; }
.blog-reading-shell .blog-thumb--image.image-failed .ace-blog-card-image { display: none; }
.blog-reading-shell .blog-thumb--image.image-failed::after { display: block; }
.blog-reading-shell .blog-thumb--image.image-failed .blog-thumb-fallback { display: block; }