/* Impact Pro IA — blog (aligné sur zeptiom.org) */
:root {
  --bg: #05060c;
  --bg2: #090c15;
  --panel: #0c101c;
  --t1: rgba(255, 255, 255, 0.96);
  --t2: rgba(255, 255, 255, 0.68);
  --t3: rgba(255, 255, 255, 0.42);
  --t4: rgba(255, 255, 255, 0.26);
  --line: rgba(255, 255, 255, 0.1);
  --line2: rgba(255, 255, 255, 0.17);
  --glass: rgba(255, 255, 255, 0.055);
  --glass2: rgba(255, 255, 255, 0.09);
  --orange: #ff6b35;
  --orange-dim: rgba(255, 107, 53, 0.14);
  --halo: rgba(255, 107, 53, 0.28);
  --green: #22c15e;
  --fd: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --fm: ui-monospace, "SF Mono", Menlo, "Cascadia Code", monospace;
  --maxw: 1120px;
  --article-w: 720px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--t1);
  font-family: var(--fd);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--orange); color: #160a04; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; border-radius: 8px; }

.atmos {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 45% at 75% -8%, rgba(56, 120, 190, 0.14), transparent 60%),
    radial-gradient(45% 40% at 8% 30%, rgba(255, 107, 53, 0.06), transparent 65%);
}
.grain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.028'/%3E%3C/svg%3E");
}
main { position: relative; z-index: 1; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.wrap-narrow { max-width: var(--article-w); margin: 0 auto; padding: 0 28px; }

h1, h2, h3 { font-weight: 800; letter-spacing: -0.035em; line-height: 1.08; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 2.2em; margin-bottom: 0.6em; }
h3 { font-size: 1.15rem; margin-top: 1.6em; margin-bottom: 0.4em; }
p { margin: 0 0 1.1em; }
.sub { color: var(--t2); font-size: clamp(1.02rem, 1.5vw, 1.15rem); line-height: 1.6; max-width: 52ch; }
.mono { font-family: var(--fm); font-variant-numeric: tabular-nums; }
.eyebrow {
  font-family: var(--fm);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--t3);
  display: block;
}
.eyebrow b { color: var(--orange); font-weight: 600; }
.glass {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 20px;
  backdrop-filter: blur(24px) saturate(170%);
  -webkit-backdrop-filter: blur(24px) saturate(170%);
}

/* nav */
nav {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px 8px 16px;
  border-radius: 999px;
  background: rgba(10, 13, 22, 0.72);
  border: 1px solid var(--line);
  backdrop-filter: blur(22px) saturate(180%);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  max-width: calc(100vw - 24px);
}
nav .logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  margin-right: 8px;
  white-space: nowrap;
}
nav .logo-mark {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: block;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14), 0 3px 10px -2px var(--halo);
}
nav a.lk {
  color: var(--t2);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 6px 11px;
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}
nav a.lk:hover,
nav a.lk.active { color: var(--t1); background: var(--glass2); }
nav .cta {
  background: var(--orange);
  color: #160a04;
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 999px;
  transition: transform 0.2s, box-shadow 0.25s;
}
nav .cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -6px var(--halo);
}
@media (max-width: 760px) {
  nav a.lk:not(.show-mobile):not(.nav-community) { display: none; }
}

/* hero blog */
.blog-hero { padding: 130px 0 60px; }
.blog-hero h1 em { font-style: normal; color: var(--orange); }

/* article cards */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
  padding: 20px 0 80px;
}
.article-card {
  display: flex;
  flex-direction: column;
  border-radius: 18px;
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.25s var(--ease), border-color 0.25s;
}
.article-card:hover {
  transform: translateY(-3px);
  border-color: var(--line2);
}
.article-card img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  display: block;
  background: var(--panel);
}
.article-card .card-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.article-card .tag {
  font-family: var(--fm);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
}
.article-card h2 { font-size: 1.2rem; margin: 0; }
.article-card p { color: var(--t2); font-size: 0.92rem; margin: 0; flex: 1; }
.article-card .meta {
  font-family: var(--fm);
  font-size: 0.72rem;
  color: var(--t3);
  margin-top: 8px;
}

/* article page */
.article-header { padding: 120px 0 32px; }
.article-header .sub { margin-top: 16px; max-width: 58ch; }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
  font-family: var(--fm);
  font-size: 0.78rem;
  color: var(--t3);
}
.article-cover {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid var(--line);
  margin: 0 0 40px;
}
.article-body { padding-bottom: 60px; }
.article-body p,
.article-body li { color: var(--t2); }
.article-body strong { color: var(--t1); }
.article-body ul,
.article-body ol { margin: 0 0 1.2em; padding-left: 1.4em; }
.article-body li { margin-bottom: 0.45em; }
.article-body a { color: var(--orange); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote {
  margin: 1.8em 0;
  padding: 18px 22px;
  border-left: 3px solid var(--orange);
  background: var(--orange-dim);
  border-radius: 0 14px 14px 0;
  color: var(--t2);
  font-style: italic;
}
.article-body .tip {
  margin: 1.8em 0;
  padding: 18px 22px;
  border-radius: 14px;
  background: var(--glass);
  border: 1px solid var(--line);
}
.article-body .tip strong { display: block; margin-bottom: 6px; color: var(--orange); }

/* CTA band */
.cta-band {
  margin: 48px 0 80px;
  padding: 32px 28px;
  border-radius: 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--orange-dim), rgba(56, 189, 248, 0.08));
  border: 1px solid var(--line2);
}
.cta-band h2 { margin: 0 0 10px; font-size: 1.5rem; }
.cta-band p { color: var(--t2); margin-bottom: 20px; }
.cta-band .stores { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta-band .store {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 18px;
  border-radius: 14px;
  border: 1px solid var(--line2);
  background: var(--glass);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s var(--ease), background 0.25s;
}
.cta-band .store:hover { transform: translateY(-2px); background: var(--glass2); }

/* related */
.related { padding: 0 0 80px; }
.related h2 { font-size: 1.3rem; margin-bottom: 20px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.related a {
  display: block;
  padding: 16px 18px;
  border-radius: 14px;
  text-decoration: none;
  transition: background 0.2s;
}
.related a:hover { background: var(--glass2); }
.related a .tag { font-family: var(--fm); font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--orange); }
.related a h3 { font-size: 0.95rem; margin: 6px 0 0; }

/* breadcrumb */
.breadcrumb {
  font-family: var(--fm);
  font-size: 0.75rem;
  color: var(--t3);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--t2); text-decoration: none; }
.breadcrumb a:hover { color: var(--orange); }

/* footer */
footer {
  border-top: 1px solid var(--line);
  padding: 26px 0;
  font-family: var(--fm);
  font-size: 0.72rem;
  color: var(--t3);
  letter-spacing: 0.06em;
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
footer a { color: var(--t2); text-decoration: none; }
footer a:hover { color: var(--orange); }
.img-credit {
  font-family: var(--fm);
  font-size: 0.68rem;
  color: var(--t4);
  margin-top: 8px;
}