:root{
  --bg:#0b0f17;--panel:#0f1625;--text:#e7ecf5;--muted:#a8b3c7;
  --brand:#7c5cff;--brand2:#00e5ff;--border:rgba(255,255,255,.08);
  --shadow:0 20px 60px rgba(0,0,0,.55);--radius:18px;--max:1100px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  --sans:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";
}
*{box-sizing:border-box} html,body{height:100%}
body{
  margin:0;
  background: var(--bg);
  color:var(--text); font-family:var(--sans); line-height:1.5;
}
/* Fixed background art — works on iOS Safari unlike background-attachment:fixed */
body::before{
  content:'';position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;pointer-events:none;
  background: radial-gradient(1200px 700px at 10% 10%, rgba(124,92,255,.18), transparent 60%),
              radial-gradient(900px 600px at 90% 20%, rgba(0,229,255,.12), transparent 55%);
}
a{color:inherit;text-decoration:none} a:hover{opacity:.92}
.container{max-width:var(--max);margin:0 auto;padding:28px 18px}

/* NAV */
.nav{position:sticky;top:0;z-index:20;backdrop-filter:blur(10px);background:rgba(11,15,23,.72);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.2px}
.dot{width:10px;height:10px;border-radius:99px;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 0 0 4px rgba(124,92,255,.15)}
.nav-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}

/* HAMBURGER — hidden on desktop */
.hamburger{display:none;background:none;border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:22px;padding:6px 10px;cursor:pointer;line-height:1;
  -webkit-tap-highlight-color:transparent;flex-direction:column;gap:5px;justify-content:center;align-items:center;width:40px;height:36px}
.hamburger:hover{background:rgba(255,255,255,.06)}
.hamburger span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:transform .3s,opacity .3s}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Overlay for mobile menu */
.overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:15}
.overlay.active{display:block}

/* PILLS & BUTTONS */
.pill{display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.03);font-size:13px;color:var(--muted)}
.pill strong{color:var(--text);font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border-radius:999px;border:1px solid rgba(124,92,255,.35);
  background:linear-gradient(135deg,rgba(124,92,255,.35),rgba(0,229,255,.18));box-shadow:0 12px 30px rgba(124,92,255,.18);font-weight:650}
.btn.secondary{background:rgba(255,255,255,.04);border:1px solid var(--border);box-shadow:none;color:var(--text)}

/* HERO */
.hero{padding:46px 0 18px}
.kicker{display:inline-flex;gap:10px;align-items:center;padding:8px 12px;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.03);color:var(--muted);font-size:13px}
.kicker code{font-family:var(--mono);font-size:12px;color:var(--text)}

/* TYPOGRAPHY */
h1{font-size:46px;line-height:1.06;margin:16px 0 10px;letter-spacing:-.6px}
h2{font-size:26px;margin:28px 0 10px;letter-spacing:-.2px}
h3{font-size:18px;margin:20px 0 8px}
p{color:var(--muted);font-size:16px;margin:10px 0}
.lede{font-size:18px;color:var(--text);opacity:.92;max-width:900px}

/* GRID & CARDS */
.grid{display:grid;gap:14px;grid-template-columns:repeat(12,1fr);margin-top:18px}
.card{grid-column:span 6;padding:18px 18px 16px;border:1px solid var(--border);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.02));box-shadow:var(--shadow)}
.card p{margin:8px 0 0}

/* RULES & PAGE */
.rule{border-top:1px solid var(--border);margin:26px 0}
.page{padding:26px 0 44px}
.page-header{padding:18px 0 6px}
.meta{color:var(--muted);font-size:13px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.meta .tag{padding:6px 10px;border-radius:999px;border:1px solid var(--border);background:rgba(255,255,255,.03)}

/* PROSE */
.prose{background:rgba(255,255,255,.02);border:1px solid var(--border);border-radius:var(--radius);padding:20px 18px}
.prose p{max-width:92ch} .prose ul{margin:10px 0 0 18px;color:var(--muted)} .prose li{margin:6px 0}
blockquote{margin:18px 0 0;padding:14px 16px;border-left:3px solid rgba(124,92,255,.7);background:rgba(124,92,255,.08);border-radius:12px;color:var(--text)}

/* FOOTER */
.footer{border-top:1px solid var(--border);background:rgba(11,15,23,.72)}
.footer-inner{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;color:var(--muted);font-size:13px}
.footer a{color:var(--muted)} .footer a:hover{color:var(--text)}
.small{font-size:13px}

/* ==========================
   TABLET BREAKPOINT (860px)
   ========================== */
@media (max-width:860px){
  h1{font-size:32px}
  h2{font-size:22px}
  .lede{font-size:16px}
  .card{grid-column:span 12}
  .kicker{font-size:12px}

  /* Show hamburger, hide nav links */
  .hamburger{display:flex}
  .nav-links{
    display:none;
    flex-direction:column;
    position:absolute;top:100%;left:0;right:0;
    background:rgba(11,15,23,.96);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);
    padding:18px;gap:10px;
    align-items:stretch;
    z-index:25;
  }
  /* Support both .open (homepage) and .active (subpages) */
  .nav-links.open,.nav-links.active{display:flex}
  .nav-links .pill,.nav-links .btn{text-align:center;justify-content:center;width:100%}

  /* Footer keeps visible */
  .footer-inner{flex-direction:column;text-align:center;gap:16px}
  .footer .nav-links{
    display:flex;flex-wrap:wrap;justify-content:center;
    position:static;background:none;border:none;padding:0;
    backdrop-filter:none;
  }
}

/* ==========================
   PHONE BREAKPOINT (480px)
   ========================== */
@media (max-width:480px){
  h1{font-size:26px}
  h2{font-size:20px}
  .container{padding:18px 14px}
  .hero{padding:28px 0 14px}
  .card{padding:14px}
  .prose{padding:16px 14px}
  .grid{gap:10px}
  .btn{padding:10px 14px;font-size:14px}
  .pill{padding:7px 10px;font-size:12px}
}