:root{
  --bg:#07080b;
  --card:#0f131b;
  --text:#f2f4f8;
  --muted:rgba(242,244,248,.74);
  --border:rgba(242,244,248,.12);
  --steel:#7aa6ff;
  --ember:#ff8a4c;
  --radius:18px;
  --radius-sm:14px;
  --container:1120px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}

a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline}

.container{max-width:var(--container);margin:0 auto;padding:22px}

.nav{
  position:sticky;top:0;z-index:10;
  backdrop-filter: blur(12px);
  background: rgba(7,8,11,.75);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:14px}
.brand{display:flex;flex-direction:column}
.brand b{font-size:16px;letter-spacing:.6px}
.brand span{font-size:12px;color:var(--muted)}

.nav-links{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.nav-links a{font-size:13px;color:var(--muted)}
.nav-links a.active{color:var(--text)}

.hero{padding:42px 0 18px}
.kicker{font-size:12px;letter-spacing:1.8px;text-transform:uppercase;color:var(--muted)}
.h1{font-size:44px;line-height:1.05;font-weight:950;margin:10px 0 10px}
.sub{font-size:16px;color:var(--muted);max-width:760px;line-height:1.55}

.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:18px}
.card{
  background:linear-gradient(180deg, rgba(15,19,27,.92), rgba(7,8,11,.92));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px;
}

.path{min-height:180px;cursor:pointer;transition:transform .08s ease,border-color .12s ease, box-shadow .12s ease}
.path:hover{transform:translateY(-1px);border-color:rgba(242,244,248,.22);box-shadow:0 18px 44px rgba(0,0,0,.55)}

.tag{font-size:12px;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted)}
.path h3{margin:6px 0 0;font-size:22px;font-weight:950}
.path p{margin:10px 0 0;color:var(--muted);line-height:1.55}

.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 12px;border-radius:14px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.03);
  color:var(--text);
  font-weight:850;
}
.btn:hover{text-decoration:none;background:rgba(255,255,255,.06)}
.btn.steel{border-color:rgba(122,166,255,.35)}
.btn.ember{border-color:rgba(255,138,76,.35)}

.split{display:grid;grid-template-columns:1.1fr .9fr;gap:14px;align-items:start;margin-top:18px}
.photo{
  width:100%;border-radius:var(--radius);
  border:1px solid var(--border);
  overflow:hidden;background:#000;
}
.photo img{display:block;width:100%;height:auto}

.section{padding:22px 0}
.h2{font-size:22px;font-weight:950;margin:0 0 8px}
.ul{margin:0;padding-left:18px;color:var(--muted);display:grid;gap:8px}

.footer{border-top:1px solid var(--border);margin-top:26px}
.footer-inner{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:18px 0;color:var(--muted);font-size:12px}
.footer a{color:var(--muted)}

.notice{padding:12px 14px;border:1px solid var(--border);border-radius:14px;background:rgba(255,255,255,.03);color:var(--muted);font-size:13px;line-height:1.55}

@media(max-width:860px){
  .grid2{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .h1{font-size:36px}
}

/* ---- Proofworks additions: π link + sample pages ---- */
.footer a.pi-link{
  opacity:.55;
  font-size:14px;
  line-height:1;
  padding:2px 6px;
  border:1px solid rgba(242,244,248,.10);
  border-radius:10px;
}
.footer a.pi-link:hover{
  opacity:1;
  text-decoration:none;
  border-color:rgba(242,244,248,.22);
}

.page-hero{
  padding:36px 0 10px;
}
.big-image{
  width:100%;
  border-radius:var(--radius);
  border:1px solid var(--border);
  overflow:hidden;
  background:#000;
}
.big-image img{
  display:block;
  width:100%;
  height:auto;
}

.center{
  display:flex;
  align-items:center;
  justify-content:center;
}