:root {
  --blog-ink: #292827;
  --blog-muted: #66717d;
  --blog-line: rgba(41, 40, 39, 0.12);
  --blog-line-strong: rgba(4, 115, 240, 0.28);
  --blog-blue: #0473f0;
  --blog-blue-soft: #e8f2ff;
  --blog-surface: #ffffff;
  --blog-radius: 20px;
  --blog-shadow: 0 22px 50px -30px rgba(41, 40, 39, 0.4);
  --blog-shadow-hover: 0 30px 60px -28px rgba(4, 115, 240, 0.4);
}

.blog-page {
  padding-top: var(--header-height);
  color: var(--blog-ink);
}

/* ---------------------------------------------------------------- Hero */
.blog-hero {
  position: relative;
  overflow: hidden;
  padding: 7rem 6% 5rem;
  background: linear-gradient(135deg, #e9f3ff 0%, var(--clr-white) 68%);
}

.blog-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -150px;
  width: 380px;
  height: 380px;
  border: 70px solid rgba(4, 115, 240, 0.08);
  border-radius: 50%;
}

.blog-hero-inner,
.blog-index-content,
.article-layout,
.home-blog-section {
  width: min(1120px, 88%);
  margin: 0 auto;
}

.blog-hero-inner { position: relative; z-index: 1; }

.blog-kicker {
  color: var(--blog-blue);
  font-family: var(--ff-texts);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.blog-hero h1 {
  max-width: 760px;
  margin: 0.8rem 0 1.2rem;
  font-family: var(--ff-titles);
  font-size: clamp(2.8rem, 6vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.blog-hero p {
  max-width: 680px;
  color: var(--blog-muted);
  font-family: var(--ff-texts);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* ------------------------------------------------------- Shared pieces */
.blog-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  background: var(--blog-blue-soft);
  color: var(--blog-blue);
  font: 800 0.72rem var(--ff-texts);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.blog-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--blog-muted);
  font: 0.82rem var(--ff-texts);
}

.blog-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--blog-blue);
  font: 700 0.92rem var(--ff-texts);
  text-decoration: none;
}

.blog-link span { transition: transform 0.3s ease; }
.blog-link:hover span { transform: translateX(4px); }

/* --------------------------------------------------------- Index page */
.blog-index-content { padding: 4.5rem 0 6rem; }

.blog-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.25rem;
  flex-wrap: wrap;
}

.blog-toolbar h2 { font-family: var(--ff-titles); font-size: 2rem; letter-spacing: -0.01em; }

.blog-filters { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.blog-filter {
  border: 1px solid var(--blog-line);
  border-radius: 999px;
  padding: 0.6rem 0.95rem;
  background: transparent;
  color: var(--blog-ink);
  cursor: pointer;
  font: 500 0.9rem var(--ff-texts);
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.blog-filter:hover { border-color: var(--blog-line-strong); color: var(--blog-blue); }
.blog-filter.is-active { border-color: var(--blog-blue); background: var(--blog-blue); color: #fff; }

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.5rem 1.35rem;
  border: 1px solid var(--blog-line);
  border-radius: var(--blog-radius);
  background: var(--blog-surface);
  color: inherit;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--blog-line-strong);
  box-shadow: var(--blog-shadow-hover);
}

.post-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.post-card__thumb {
  flex: 0 0 auto;
  width: 54px;
  height: 54px;
  overflow: hidden;
  border: 1px solid var(--blog-line);
  border-radius: 15px;
  background: var(--blog-blue-soft);
}

.post-card__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.post-card:hover .post-card__thumb img { transform: scale(1.1); }

.post-card__title {
  margin: 1.1rem 0 0.6rem;
  font: 700 1.3rem/1.22 var(--ff-titles);
  letter-spacing: -0.01em;
}

.post-card__excerpt {
  flex: 1;
  color: var(--blog-muted);
  font: 0.98rem/1.6 var(--ff-texts);
}

.post-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--blog-line);
}

.post-card__arrow {
  color: var(--blog-blue);
  font-size: 1.2rem;
  line-height: 1;
  transition: transform 0.3s ease;
}

.post-card:hover .post-card__arrow { transform: translateX(5px); }

/* --------------------------------------------------------- Home block */
.home-blog-section {
  position: relative;
  padding: 6.5rem 0 7rem;
}

.home-blog-section::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -30px;
  width: 300px;
  height: 300px;
  border: 55px solid rgba(4, 115, 240, 0.05);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.home-blog-header,
.home-blog-grid {
  position: relative;
  z-index: 1;
}

.home-blog-header {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: end;
  margin-bottom: 2.75rem;
}

.home-blog-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--blog-blue);
  font-family: var(--ff-texts);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.home-blog-eyebrow::before {
  content: "";
  width: 36px;
  height: 2px;
  background: var(--blog-blue);
}

.home-blog-heading h2 {
  margin-top: 0.9rem;
  font: 800 clamp(2rem, 4vw, 3.7rem)/1.05 var(--ff-titles);
  letter-spacing: -0.02em;
}

.home-blog-intro p {
  margin-bottom: 1.25rem;
  color: var(--blog-muted);
  font: 1.05rem/1.7 var(--ff-texts);
}

.home-blog-all {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.4rem;
  border: 1px solid var(--blog-ink);
  border-radius: 999px;
  color: var(--blog-ink);
  font: 700 0.95rem var(--ff-texts);
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.home-blog-all:hover {
  transform: translateY(-2px);
  border-color: var(--blog-blue);
  background: var(--blog-blue);
  color: #fff;
}

.home-blog-grid { display: grid; gap: 1.5rem; }

.home-blog-sides {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

/* Featured article */
.blog-featured {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  overflow: hidden;
  border: 1px solid var(--blog-line);
  border-radius: 24px;
  background: var(--blog-surface);
  box-shadow: var(--blog-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.blog-featured:hover {
  transform: translateY(-4px);
  border-color: var(--blog-line-strong);
  box-shadow: var(--blog-shadow-hover);
}

.blog-featured__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.75rem, 3vw, 2.75rem);
}

.blog-featured__title {
  margin: 1rem 0 0.8rem;
  font: 700 clamp(1.5rem, 2.4vw, 2.15rem)/1.14 var(--ff-titles);
  letter-spacing: -0.02em;
}

.blog-featured__title a { color: inherit; text-decoration: none; }

.blog-featured__excerpt {
  color: var(--blog-muted);
  font: 1.02rem/1.65 var(--ff-texts);
}

.blog-featured__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  margin-top: 1.6rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--blog-line);
}

.blog-featured__media {
  position: relative;
  display: block;
  overflow: hidden;
  min-height: 100%;
  background: var(--blog-blue-soft);
}

.blog-featured__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.blog-featured:hover .blog-featured__media img { transform: scale(1.05); }

/* Compact side cards */
.blog-side {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  height: 100%;
  padding: 1.15rem 1.15rem 1.15rem 1.35rem;
  border: 1px solid var(--blog-line);
  border-radius: 18px;
  background: var(--blog-surface);
  color: inherit;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.blog-side:hover {
  transform: translateY(-4px);
  border-color: var(--blog-line-strong);
  box-shadow: var(--blog-shadow-hover);
}

.blog-side__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 0;
}

.blog-side__title {
  font: 700 1.12rem/1.28 var(--ff-titles);
  letter-spacing: -0.01em;
}

.blog-side__thumb {
  flex: 0 0 auto;
  width: 84px;
  height: 84px;
  overflow: hidden;
  border: 1px solid var(--blog-line);
  border-radius: 14px;
  background: var(--blog-blue-soft);
}

.blog-side__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.blog-side:hover .blog-side__thumb img { transform: scale(1.08); }

/* ------------------------------------------------------------ Article */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) 220px;
  gap: 3.5rem;
  padding: 4rem 0 6rem;
}

.article-header { border-bottom: 1px solid var(--blog-line); padding-bottom: 2rem; }
.article-category {
  color: var(--blog-blue);
  font-family: var(--ff-texts);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
}
.article-header h1 { margin: 0.8rem 0 1.1rem; font: 800 clamp(2.4rem, 5vw, 4.6rem)/1.02 var(--ff-titles); letter-spacing: -0.02em; }
.article-summary { color: var(--blog-muted); font: 1.2rem/1.65 var(--ff-texts); }
.article-meta { display: flex; gap: 0.7rem; flex-wrap: wrap; margin-top: 1.2rem; color: var(--blog-muted); font: 0.9rem var(--ff-texts); }
.article-hero-image { display: block; width: 100%; aspect-ratio: 16 / 8; object-fit: cover; margin: 2rem 0; border: 1px solid var(--blog-line); border-radius: 16px; }
.article-content { font: 1.08rem/1.8 var(--ff-texts); }
.article-content h2 { margin: 2.5rem 0 0.8rem; font: 800 2rem/1.15 var(--ff-titles); letter-spacing: -0.01em; }
.article-content h3 { margin: 1.7rem 0 0.5rem; font: 800 1.35rem/1.2 var(--ff-titles); }
.article-content p, .article-content ul, .article-content ol { margin-bottom: 1.1rem; }
.article-content ul, .article-content ol { padding-left: 1.4rem; }
.article-content li { margin-bottom: 0.5rem; }
.article-content a { color: var(--blog-blue); font-weight: 700; }
.article-content img { display: block; width: 100%; margin: 1.75rem 0; border: 1px solid var(--blog-line); border-radius: 14px; }
.article-content img.article-image-vertical { width: auto; max-width: min(320px, 72%); max-height: 620px; margin: 1.75rem auto; object-fit: contain; }
.article-content img.article-image-small { width: auto; max-width: min(440px, 75%); margin-left: auto; margin-right: auto; }

.article-partner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin: 2rem 0;
  padding: 1.35rem 1.5rem;
  border: 1px solid var(--blog-line);
  border-radius: 16px;
  background: var(--blog-surface);
}

.article-partner img {
  flex: 0 0 auto;
  width: 76px;
  height: 76px;
  padding: 0.55rem;
  margin: 0;
  border: 1px solid var(--blog-line);
  border-radius: 16px;
  background: var(--blog-blue-soft);
  object-fit: contain;
}

.article-partner strong {
  display: block;
  margin-bottom: 0.35rem;
  font: 800 1.02rem/1.25 var(--ff-titles);
}

.article-partner p {
  margin: 0;
  color: var(--blog-muted);
  font: 0.95rem/1.55 var(--ff-texts);
}
.article-aside { position: sticky; top: 110px; align-self: start; border-left: 2px solid var(--blog-blue); padding-left: 1rem; color: var(--blog-muted); font: 0.9rem/1.5 var(--ff-texts); }
.article-aside strong { display: block; color: var(--blog-ink); margin-bottom: 0.5rem; }
.article-cta { margin: 3rem 0; padding: 2rem; border-radius: 16px; background: var(--blog-blue); color: white; }
.article-cta h2 { margin-top: 0; color: white; }
.article-cta p { margin-bottom: 1rem; }
.article-cta a { display: inline-block; padding: 0.8rem 1.1rem; border-radius: 10px; background: white; color: var(--blog-blue); text-decoration: none; font-weight: 800; }
.related-posts { grid-column: 1 / -1; border-top: 1px solid var(--blog-line); padding-top: 3rem; }
.related-posts h2 { margin-bottom: 1.3rem; font: 800 2rem var(--ff-titles); letter-spacing: -0.01em; }
.related-posts .blog-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.related-posts .blog-card-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--blog-line);
  border-radius: 14px;
  background: var(--blog-surface);
  color: var(--blog-ink);
  font: 600 0.98rem/1.4 var(--ff-texts);
  text-decoration: none;
  transition: transform 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}
.related-posts .blog-card-link:hover { transform: translateY(-3px); border-color: var(--blog-line-strong); color: var(--blog-blue); }

/* -------------------------------------------------------- Responsive */
@media (max-width: 900px) {
  .blog-featured { grid-template-columns: 1fr; }
  .blog-featured__body { order: 2; }
  .blog-featured__media { order: 1; min-height: 0; aspect-ratio: 16 / 9; }
  .blog-featured__media img { position: absolute; }
}

@media (max-width: 800px) {
  .blog-page { padding-top: var(--header-height-mobile); }
  .blog-hero { padding: 5rem 6% 4rem; }
  .blog-index-content, .article-layout, .home-blog-section { width: min(92%, 680px); }
  .post-grid { grid-template-columns: 1fr; }
  .home-blog-section { padding: 4.5rem 0; }
  .home-blog-header { grid-template-columns: 1fr; gap: 1.25rem; align-items: start; }
  .home-blog-sides { grid-template-columns: 1fr; }
  .article-layout { display: block; padding-top: 2.5rem; }
  .article-aside { display: none; }
  .article-header h1 { font-size: clamp(2.35rem, 10vw, 3.4rem); }
  .article-content { font-size: 1rem; }
  .article-hero-image { aspect-ratio: 4 / 3; }
  .related-posts { margin-top: 3rem; }
  .related-posts .blog-card-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .blog-toolbar { flex-direction: column; align-items: flex-start; }
  .blog-filters { width: 100%; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 0.25rem; -webkit-overflow-scrolling: touch; }
  .blog-filter { flex: 0 0 auto; }
  .blog-side__thumb { width: 70px; height: 70px; }
  .article-partner { gap: 0.9rem; padding: 1.15rem 1.2rem; }
  .article-partner img { width: 60px; height: 60px; }
}