:root{ --bg:#070710; --fg:#e7e7ea; --muted:#b8b8c2; --accent:#7fd3ff; --accent2:#9b5cff; --surface:rgba(255,255,255,.05); }
    *{box-sizing:border-box}
    html,body{height:100%}
    body{margin:0;background:radial-gradient(1200px 800px at 70% 30%,#0a1624 0%,#0a1220 40%,#070710 100%);color:var(--fg);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Arial}
    a{color:inherit}
    .skip{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
    .skip:focus{left:16px;top:12px;width:auto;height:auto;background:#000;color:#fff;padding:8px 12px;border-radius:8px;z-index:9999}

    /* Calque particules plein écran */
    #particles-js{position:fixed;inset:0;z-index:-1;pointer-events:none}

    .container{width:min(1100px, 92%);margin-inline:auto}
    /* Header */
    .site-header{position:sticky;top:0;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);background:linear-gradient(180deg, rgba(7,7,16,.85), rgba(7,7,16,.25) 60%, transparent);z-index:50}
    .header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
    .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:700}
    .brand .logo{width:28px;height:28px;border-radius:8px;background:#0a0f1e;display:grid;place-items:center;box-shadow:0 2px 8px rgba(0,0,0,.4)}
    .brand .logo:before{content:"";width:14px;height:14px;background:conic-gradient(from 0deg,#00e4c8,#2f84ff,#9b5cff,#00e4c8);border-radius:50%}

    /* NAV desktop */
    .nav{display:flex;gap:22px;align-items:center}
    .nav a{position:relative;text-decoration:none;opacity:.95;padding:8px 2px}
    .nav a::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;transform:scaleX(0);transform-origin:0 50%;transition:transform .25s ease;background:linear-gradient(90deg,#00e4c8,#2f84ff 60%,#9b5cff)}
    .nav a:hover::after,.nav a:focus-visible::after,.nav a.active::after{transform:scaleX(1)}
    .nav .btn{padding:10px 14px;border-radius:12px;background:var(--surface);box-shadow:inset 0 1px 0 rgba(255,255,255,.06)}

    /* NAV mobile */
    .nav-toggle{display:none;position:relative;isolation:isolate;background:var(--surface);border:0;color:var(--fg);padding:10px 12px;border-radius:10px}
    .nav-toggle .bars{width:20px;height:12px;position:relative;display:inline-block}
    .nav-toggle .bars::before,.nav-toggle .bars::after,.nav-toggle .bar{content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:linear-gradient(90deg,#00e4c8,#2f84ff 60%,#9b5cff)}
    .nav-toggle .bar{top:5px}
    .nav-toggle .bars::before{top:0}
    .nav-toggle .bars::after{bottom:0}
    .nav-toggle[aria-expanded="true"] .bars::before{transform:translateY(5px) rotate(45deg)}
    .nav-toggle[aria-expanded="true"] .bars::after{transform:translateY(-5px) rotate(-45deg)}
    .nav-toggle[aria-expanded="true"] .bar{transform:scaleX(0)}

    @media (max-width:800px){
      .nav-toggle{display:inline-flex;align-items:center;gap:8px}
      /* Mobile menu drops in the flow (no overlay) */
      .nav{display:none;position:static;background:rgba(7,7,16,.92);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:12px 16px;flex-direction:column;min-width:auto;margin-top:10px}
      .nav a{padding:10px 2px}
      .nav[aria-expanded="true"]{display:flex}
    }

    /* Hero */
    .hero{padding:120px 0 80px;text-align:center}
    .hero h1{font-size:clamp(32px,6vw,64px);line-height:1.05;margin:0 0 12px}
    .lead{font-size:clamp(16px,2.2vw,20px);color:var(--muted);margin:0 auto 24px;max-width:860px}
    .cta-row{display:flex;gap:12px;justify-content:center}
    .btn{display:inline-block;text-decoration:none;border:0;background:linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.06));padding:12px 18px;border-radius:14px;color:var(--fg);box-shadow:0 10px 30px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.06)}
    .btn.ghost{background:transparent;border:1px solid rgba(19, 15, 15, 0.7)}

    /* Sections */
    .section{padding:64px 0}
    .section h2{font-size:clamp(22px,4vw,32px);margin:0 0 24px}
    .grid{display:grid;gap:16px}
    .cards{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
    .card{background:rgba(19, 15, 15, 0.7);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:18px;min-height:140px}
    .portfolio{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
    .tile{display:flex;flex-direction:column;text-decoration:none;background:rgba(19, 15, 15, 0.7);border:1px solid rgba(255,255,255,.08);border-radius:16px;overflow:hidden}
    .tile-img{height:140px;background:linear-gradient(135deg, rgba(0,228,200,.25), rgba(47,132,255,.25) 60%, rgba(155,92,255,.25)), radial-gradient(600px 240px at 70% 30%, rgba(255,255,255,.08), transparent 60%), #0a0f1e; background-size:cover; background-position:center}
    .tile span{padding:12px 14px;color:var(--muted)}
    /* Articles */
    .posts{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
    .post .post-body{padding:12px 14px;display:grid;gap:6px}
    .post strong{font-weight:700}
    .post .post-meta{color:var(--muted)}
    /* Home Articles (stories style) */
    .stories{grid-template-columns:repeat(12,1fr);gap:16px}
    @media(min-width:720px){.stories{gap:18px}}
    @media(min-width:960px){.stories{gap:20px}}
    .story{grid-column:span 12;background:rgba(19,15,15,.75);border:1px solid rgba(255,255,255,.08);border-radius:16px;overflow:hidden;display:flex;flex-direction:column}
    @media(min-width:720px){.story{grid-column:span 6}}
    @media(min-width:1024px){.story{grid-column:span 4}}
    .story-link{display:flex;flex-direction:column;text-decoration:none;color:inherit;height:100%}
    .story-img{aspect-ratio:16/10;background:#0a0f1e;background-size:cover;background-position:center;border-bottom:1px solid rgba(255,255,255,.06)}
    .story-body{padding:16px 16px 18px;display:grid;gap:8px}
    .story-meta{font-size:12px;letter-spacing:.04em;color:var(--muted);text-transform:uppercase;display:flex;align-items:center;gap:8px}
    .story-chip{display:inline-block;padding:2px 6px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08)}
    .story-title{font-size:clamp(16px,2.2vw,20px);margin:0}
    .story-excerpt{margin:0;color:var(--muted)}
    .steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;counter-reset:s}
    .steps li{list-style:none;background:rgba(19, 15, 15, 0.7);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:14px;position:relative}
    .steps li:before{counter-increment:s;content:counter(s);position:absolute;top:10px;right:12px;font-size:12px;color:var(--muted)}

    /* Contact */
    .contact{display:grid;gap:12px}
    .contact .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .contact .row.end{align-items:center;grid-template-columns:1fr auto}
    label{display:grid;gap:6px;font-size:14px;color:var(--muted)}
    input,textarea{padding:12px 12px;border-radius:12px;border:1px solid rgba(19, 15, 15, 0.7);background:rgba(19, 15, 15, 0.7);color:var(--fg)}
    .checkbox{display:flex;align-items:center;gap:8px}
    #form-status{font-size:14px;color:var(--muted)}

    /* Footer */
    .site-footer{padding:24px 0;color:var(--muted);opacity:.9}