/* ---- css/blog.css ---- */
.stBlogPage {
  --st-blog-navy: #1e2a5a;
  --st-blog-indigo: #394b8c;
  --st-blog-cyan: #4fc1c4;
  min-height: 100vh;
  background: #fff;
  color: var(--st-blog-navy);
}

.stBlogShell {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 54px 0 76px;
}

.stBlogIntro {
  padding: 0 0 38px;
  border-bottom: 1px solid #e6ebf1;
}

.stBlogIntro h1 {
  margin: 0;
  color: var(--st-blog-navy);
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.stBlogSections {
  padding-top: 6px;
}

.stBlogSection {
  padding: 42px 0 48px;
}

.stBlogSection + .stBlogSection {
  border-top: 1px solid #edf0f4;
}

.stBlogSectionHeader {
  margin-bottom: 20px;
}

.stBlogSectionHeader h2 {
  margin: 0;
  color: var(--st-blog-navy);
  font-size: clamp(22px, 2.5vw, 28px);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.stBlogSectionHeader p {
  width: 100%;
  max-width: none;
  margin: 7px 0 0;
  color: #778196;
  font-size: 13px;
  line-height: 1.55;
}

.stBlogGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.stBlogCard {
  min-width: 0;
}

.stBlogCard a {
  height: 100%;
  display: block;
  overflow: hidden;
  border: 1px solid #e5e9ef;
  border-radius: 13px;
  background: #fff;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.stBlogCard a:hover {
  border-color: rgba(79, 193, 196, 0.7);
  box-shadow: 0 10px 25px rgba(30, 42, 90, 0.08);
  transform: translateY(-2px);
}

.stBlogCardImage {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #eef3f5;
}

.stBlogCard img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.stBlogCard a:hover img {
  transform: scale(1.025);
}

.stBlogCardContent {
  padding: 15px 16px 16px;
}

.stBlogCardContent h3 {
  margin: 0;
  color: var(--st-blog-navy);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.28;
  letter-spacing: -0.025em;
}

@media (max-width: 820px) {
  .stBlogGrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 540px) {
  .stBlogShell {
    width: calc(100% - 30px);
    padding: 38px 0 58px;
  }

  .stBlogIntro {
    padding-bottom: 28px;
  }

  .stBlogSection {
    padding: 32px 0 38px;
  }

  .stBlogGrid {
    grid-template-columns: 1fr;
    gap: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .stBlogCard a,
  .stBlogCard img {
    transition: none;
  }
}