.primary-nav { gap: clamp(14px, 2vw, 28px); }
.section-action { margin: 30px 0 0; }

.blog-main { padding-bottom: clamp(84px, 10vw, 136px); }
.blog-hero { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); align-items: end; gap: clamp(44px, 8vw, 120px); padding-block: clamp(76px, 10vw, 138px); }
.blog-hero h1 { max-width: 12ch; font-size: clamp(3.35rem, 6.4vw, 6.25rem); font-weight: 760; }
.blog-hero > div > p:not(.article-label) { max-width: 660px; margin: 28px 0 0; color: var(--muted); font-size: 1.16rem; }
.blog-principle { padding: 32px; border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line)); border-radius: var(--radius); background: linear-gradient(145deg, var(--surface-blue), var(--surface)); }
.blog-principle strong { font-family: var(--display); font-size: 1.45rem; letter-spacing: -.025em; }
.blog-principle p { margin: 12px 0 0; color: var(--muted); }

.blog-library { padding-block: clamp(72px, 9vw, 120px); border-top: 1px solid var(--line); }
.blog-tools { display: grid; grid-template-columns: minmax(260px, 1fr) auto; gap: 18px 28px; align-items: end; margin-bottom: 42px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius-small); background: var(--surface); box-shadow: var(--shadow-soft); }
.blog-search { display: grid; gap: 8px; color: var(--ink); font-size: 13px; font-weight: 780; }
.blog-search input { width: 100%; min-height: 48px; padding: 0 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-strong); color: var(--ink); font: inherit; }
.blog-search input::placeholder { color: var(--muted); }
.blog-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.blog-filters button { min-height: 42px; padding: 0 15px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface-strong); color: var(--muted); cursor: pointer; font-size: 13px; font-weight: 760; }
.blog-filters button:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); color: var(--ink); }
.blog-filters button[aria-pressed="true"] { border-color: var(--accent); background: var(--accent); color: #f7fbff; }
.blog-result { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 14px; }

.blog-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.blog-card { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-strong); box-shadow: var(--shadow-soft); transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease; }
.blog-card:hover { border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); transform: translateY(-5px); box-shadow: var(--shadow); }
.blog-card-media { display: block; overflow: hidden; background: var(--surface-blue); }
.blog-card-media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform .4s cubic-bezier(.16,1,.3,1); }
.blog-card:hover .blog-card-media img { transform: scale(1.025); }
.blog-card-copy { display: flex; min-height: 310px; flex-direction: column; align-items: flex-start; padding: clamp(24px, 4vw, 38px); }
.blog-card-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-bottom: 18px; color: var(--accent); font-size: 13px; font-weight: 780; }
.blog-card-meta span + span { color: var(--muted); }
.blog-card h2 { font-size: clamp(1.7rem, 2.6vw, 2.55rem); line-height: 1.08; }
.blog-card h2 a { color: var(--ink); text-decoration: none; }
.blog-card h2 a:hover { color: var(--accent); }
.blog-card-copy > p { margin: 18px 0 0; color: var(--muted); }
.blog-card-link { margin-top: auto; padding-top: 28px; font-size: 14px; font-weight: 780; text-decoration: none; }
.blog-card-link::after { content: " →"; }
.blog-card[hidden] { display: none; }
.blog-empty { padding: 54px 28px; border: 1px dashed var(--line); border-radius: var(--radius); text-align: center; }
.blog-empty h2 { font-size: 2rem; }
.blog-empty p, .blog-noscript { color: var(--muted); }
.blog-callout { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 40px; padding: clamp(36px, 6vw, 64px); border-radius: var(--radius); background: var(--ink); color: var(--surface); }
.blog-callout h2 { max-width: 18ch; font-size: clamp(2rem, 4vw, 3.7rem); }
.blog-callout p:not(.article-label) { max-width: 650px; margin: 18px 0 0; color: color-mix(in srgb, var(--surface) 76%, transparent); }

@media (max-width: 1060px) {
  .primary-nav { gap: 15px; }
  .primary-nav a { font-size: 13px; }
  .blog-tools { grid-template-columns: 1fr; align-items: start; }
}
@media (max-width: 900px) {
  .blog-hero { grid-template-columns: 1fr; align-items: start; }
  .blog-principle { max-width: 620px; }
}
@media (max-width: 760px) {
  .primary-nav { gap: 0; }
  .primary-nav a { font-size: 14px; }
  .blog-hero { padding-block: 62px 86px; }
  .blog-hero h1 { font-size: clamp(2.85rem, 13vw, 4.4rem); }
  .blog-tools { padding: 18px; }
  .blog-filters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; }
  .blog-filters button:first-child { grid-column: 1 / -1; }
  .blog-grid { grid-template-columns: 1fr; }
  .blog-card-copy { min-height: 0; }
  .blog-card-link { margin-top: 16px; }
  .blog-callout { grid-template-columns: 1fr; }
}
@media (prefers-color-scheme: dark) {
  .blog-filters button[aria-pressed="true"] { color: #071425; background: #8bb4ff; }
  .blog-callout { background: #dceaff; color: #071425; }
  .blog-callout p:not(.article-label) { color: #33465f; }
  .blog-card-media img { filter: brightness(.88) contrast(1.04); }
}