:root{
  --bg:#0c111f;--card:rgba(31,40,68,.45);--border:rgba(160,178,224,.14);--border-strong:rgba(160,178,224,.28);
  --text:#e9edf7;--muted:#a6afca;--muted-2:#7a83a2;--accent:#93b4ec;--accent-2:#88d4c0;--accent-3:#c3b1ea;
  --grad:linear-gradient(135deg,#93b4ec,#88d4c0 52%,#c3b1ea);--radius:18px;
  --shadow:0 26px 60px -30px rgba(0,0,0,.6);--ease:cubic-bezier(.33,1,.68,1);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);line-height:1.7;
  font-family:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(40vmax 40vmax at 15% 0%,rgba(147,180,236,.10),transparent 60%),radial-gradient(40vmax 40vmax at 90% 10%,rgba(195,177,234,.08),transparent 60%);}
a{color:var(--accent);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--accent-2)}
.container{max-width:1080px;margin:0 auto;padding:0 24px}
.narrow{max-width:780px}
header.site{position:sticky;top:0;z-index:30;backdrop-filter:blur(14px);
  background:linear-gradient(to bottom,rgba(12,17,31,.85),rgba(12,17,31,.4));border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.brand{font-weight:800;display:flex;align-items:center;gap:12px;color:var(--text);font-size:17px}
.brand .logo{width:34px;height:34px;border-radius:10px;background:var(--grad);display:grid;place-items:center;color:#06122c;font-weight:900}
.nav nav{display:flex;align-items:center;gap:26px}
.nav nav a{color:var(--muted);font-size:14.5px;font-weight:500}
.nav nav a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:11px;font-weight:650;font-size:14.5px;
  border:1px solid var(--border-strong);color:var(--text);background:rgba(255,255,255,.03);transition:transform .4s var(--ease),box-shadow .4s,border-color .4s;margin:4px 8px 4px 0}
.btn:hover{transform:translateY(-2px);border-color:var(--accent)}
.btn.primary{background:var(--grad);border:none;color:#06122c}
section{padding:64px 0}
section.head{padding:90px 0 30px;text-align:center}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);
  padding:6px 14px;border:1px solid var(--border);border-radius:999px;background:var(--card);margin-bottom:16px}
h1{font-size:clamp(30px,5vw,48px);line-height:1.12;letter-spacing:-.02em;margin:0 0 16px}
h2{font-size:26px;margin:40px 0 14px;letter-spacing:-.01em}
h3{font-size:20px;margin:28px 0 10px}
.intro{color:var(--muted);max-width:620px;margin:0 auto;font-size:17px}
.muted{color:var(--muted)}
/* grille d'articles */
.post-grid{display:grid;gap:26px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.post-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;backdrop-filter:blur(10px);transition:transform .45s var(--ease),box-shadow .45s}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.post-card .thumb{height:160px;border-bottom:1px solid var(--border);overflow:hidden}
.post-card .body{padding:24px;display:flex;flex-direction:column;gap:9px;flex:1}
.post-card .tag{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2)}
.post-card h3{margin:0;font-size:18px}
.post-card p{margin:0;color:var(--muted);font-size:14.5px;flex:1}
.post-card .more{color:var(--accent);font-weight:600;font-size:14px}
/* illustrations */
.illus-css{height:100%;min-height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:var(--g);color:#06122c}
.illus-css .ic{font-size:42px;font-weight:900;line-height:1}
.illus-css .lb{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;opacity:.85}
.illus-css.big{min-height:240px;border-radius:16px;margin:24px 0}
.illus-img img{width:100%;height:100%;object-fit:cover;display:block}
.illus-img.big{margin:24px 0;border-radius:16px;overflow:hidden;border:1px solid var(--border)}
.illus-img .credit{font-size:12px;color:var(--muted-2);padding:8px 0}
/* article */
.article{padding:70px 0 50px}
.article .back{display:inline-block;color:var(--muted);margin-bottom:24px;font-size:14px}
.article .tag{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2)}
.article .meta{color:var(--muted-2);font-size:14px;margin:6px 0 8px}
.article .content{color:#d9e0f2}
.article .content p{margin:0 0 18px}
.article .content ul,.article .content ol{color:#d9e0f2;padding-left:22px;margin:0 0 18px}
.article .content li{margin:8px 0}
.article .content code{background:rgba(147,180,236,.12);color:var(--accent);padding:2px 7px;border-radius:6px;font-size:14px;font-family:ui-monospace,monospace}
pre.code{background:#0a1230;border:1px solid var(--border-strong);border-radius:10px;padding:16px;overflow-x:auto;font-size:13.5px;color:#c7d2fe;margin:0 0 16px}
pre.code.bad{border-left:3px solid #ff7a90}
pre.code.ok{border-left:3px solid var(--accent-2)}
.terminal{background:linear-gradient(180deg,#0a1230,#0a0f24);border:1px solid var(--border-strong);border-radius:14px;overflow:hidden;margin:24px 0;box-shadow:var(--shadow)}
.terminal .bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--border)}
.terminal .bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.terminal .bar .r{background:#ff5f57}.terminal .bar .y{background:#febc2e}.terminal .bar .g{background:#28c840}
.terminal .bar span{margin-left:8px;color:var(--muted-2);font-size:12.5px;font-family:ui-monospace,monospace}
.terminal pre{margin:0;padding:18px;font-family:ui-monospace,monospace;font-size:13px;line-height:1.8;color:#c7d2fe;overflow-x:auto}
.callout{display:flex;gap:12px;padding:16px 20px;border-radius:12px;margin:22px 0;background:var(--card);border:1px solid var(--border);border-left:3px solid var(--accent)}
.callout.warn{border-left-color:#febc2e}
.callout p{margin:0;color:var(--muted);font-size:15px}
.sources{margin:36px 0;padding:18px 22px;background:var(--card);border:1px solid var(--border);border-radius:12px}
.sources h3{margin:0 0 8px;font-size:15px}
.sources ul{margin:0;padding-left:20px;color:var(--muted);font-size:14.5px}
.cta-band{margin:44px 0 0;padding:36px;border-radius:18px;background:linear-gradient(135deg,rgba(147,180,236,.12),rgba(136,212,192,.10),rgba(195,177,234,.12));border:1px solid var(--border-strong);text-align:center}
.cta-band h3{margin:0 0 8px}
.cta-band p{color:var(--muted);margin:0 0 18px}
footer.site{padding:46px 0;border-top:1px solid var(--border);color:var(--muted);font-size:14px;margin-top:40px}
footer.site .row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer.site a{color:var(--muted)}
@media(max-width:640px){.nav nav a:not(.btn){display:none}}