/* AI for Network Marketers — shared tech/AI theme
   Committed dark theme (single strong look), self-contained, no external assets. */

:root{
  --bg:#0a0e17;
  --bg-2:#0f1524;
  --panel:#121a2b;
  --panel-2:#0d1420;
  --ink:#e8edf7;
  --muted:#9aa7bd;
  --faint:#68758c;
  --line:rgba(148,163,184,.14);
  --line-strong:rgba(148,163,184,.26);
  --cyan:#38bdf8;
  --violet:#a78bfa;
  --emerald:#34d399;
  --accent:#38bdf8;
  --grad:linear-gradient(120deg,#38bdf8 0%,#6366f1 55%,#a78bfa 100%);
  --grad-text:linear-gradient(110deg,#7dd3fc 0%,#a5b4fc 50%,#c4b5fd 100%);
  --max:1080px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
/* ambient tech glow + faint grid */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(99,102,241,.18), transparent 60%),
    radial-gradient(760px 460px at 8% 4%, rgba(56,189,248,.13), transparent 58%),
    linear-gradient(180deg,var(--bg) 0%, var(--bg-2) 100%);
}
.grid-lines::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(680px 420px at 70% 0%, #000 0%, transparent 70%);
  mask-image:radial-gradient(680px 420px at 70% 0%, #000 0%, transparent 70%);
}

.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
a{color:var(--cyan);text-decoration:none}
a:hover{color:#7dd3fc}
img{max-width:100%}
.mono{font-family:var(--mono)}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:60;padding:13px 0;
  background:rgba(10,14,23,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
header.scrolled{border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(2,6,20,.5)}
.headrow{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:16.5px;letter-spacing:.2px;
  color:var(--ink);white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand .dot{width:26px;height:26px;border-radius:7px;background:var(--grad);
  display:grid;place-items:center;font-family:var(--mono);font-size:12.5px;font-weight:800;color:#04101c;
  box-shadow:0 4px 14px rgba(56,189,248,.35)}
.brand b{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.navwrap{display:flex;align-items:center;gap:22px}
.nav{display:flex;align-items:center;gap:20px;font-size:14.5px;font-weight:500}
.nav a{color:var(--muted);position:relative;padding:3px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--grad);transition:width .25s}
.nav a:hover{color:var(--ink)} .nav a:hover::after{width:100%}
.locale{display:flex;gap:8px;font-family:var(--mono);font-size:12px}
.locale a{color:var(--faint);text-transform:uppercase;letter-spacing:.06em;padding:2px 5px;border-radius:5px}
.locale a.on{color:#04101c;background:var(--cyan)}
.locale a:hover{color:var(--ink)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:650;font-size:15px;line-height:1;
  padding:14px 22px;border-radius:10px;border:1px solid transparent;cursor:pointer;
  transition:transform .15s,box-shadow .2s,background .2s}
.btn-primary{background:var(--grad);color:#04101c;box-shadow:0 8px 22px rgba(56,189,248,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(99,102,241,.4);color:#04101c}
.btn-ghost{background:rgba(148,163,184,.06);color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--ink);transform:translateY(-2px)}
.btn-sm{padding:10px 16px;font-size:14px;border-radius:9px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.cta-row.center{justify-content:center}

/* ---------- hero ---------- */
.hero{padding:56px 0 30px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12.5px;
  letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);
  border:1px solid var(--line-strong);border-radius:100px;padding:6px 14px;margin-bottom:22px;
  background:rgba(56,189,248,.06)}
.kicker .pulse{width:7px;height:7px;border-radius:50%;background:var(--emerald);box-shadow:0 0 0 0 rgba(52,211,153,.6);
  animation:pulse 2.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(52,211,153,.55)}70%{box-shadow:0 0 0 9px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}
h1{font-size:53px;line-height:1.05;letter-spacing:-.02em;margin:0 0 18px;font-weight:800}
h1 .g{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{font-size:20px;line-height:1.5;color:var(--muted);max-width:560px;margin:0 0 26px}
.hero .sub b{color:var(--ink);font-weight:650}
.hero-book{position:relative;justify-self:center}
.hero-book img{width:100%;height:auto;max-width:380px;filter:drop-shadow(0 30px 60px rgba(2,6,23,.6));
  transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.hero-book img:hover{transform:translateY(-6px) rotate(-.6deg)}
.hero-book .halo{position:absolute;inset:-12% -8% -8% -8%;z-index:-1;border-radius:50%;
  background:radial-gradient(closest-side,rgba(99,102,241,.35),transparent 72%);filter:blur(6px)}
.trust{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:24px;font-size:13.5px;color:var(--faint);
  font-family:var(--mono)}
.trust span{display:inline-flex;align-items:center;gap:7px}
.trust span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--emerald)}

/* ---------- sections ---------- */
section{padding:60px 0;border-top:1px solid var(--line)}
.eyebrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);text-align:center;margin-bottom:12px}
h2{font-size:34px;line-height:1.12;letter-spacing:-.02em;margin:0 0 12px;text-align:center;font-weight:750}
.lead{text-align:center;color:var(--muted);max-width:620px;margin:0 auto 40px;font-size:18px}

/* discover / feature grid */
.features{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.feat{background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--line);
  border-radius:14px;padding:22px 22px 24px;transition:transform .18s,border-color .18s}
.feat:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.feat .ic{width:38px;height:38px;border-radius:10px;background:rgba(56,189,248,.1);border:1px solid var(--line-strong);
  display:grid;place-items:center;font-size:19px;margin-bottom:14px}
.feat h3{font-size:17.5px;margin:0 0 6px;font-weight:650}
.feat p{margin:0;color:var(--muted);font-size:15px;line-height:1.55}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center}
.stat .n{font-size:40px;font-weight:800;letter-spacing:-.02em;
  background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .l{font-size:13.5px;color:var(--muted);font-family:var(--mono);margin-top:2px}

/* editions / buy cards */
.editions{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;max-width:720px;margin:0 auto}
.ed{background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--line);
  border-radius:14px;padding:24px;display:flex;flex-direction:column;gap:6px}
.ed .fmt{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan)}
.ed .price{font-size:26px;font-weight:800}
.ed .price s{color:var(--faint);font-weight:500;font-size:16px;margin-left:6px}
.ed p{color:var(--muted);font-size:14.5px;margin:2px 0 14px}
.ed .btn{margin-top:auto}

/* panel / callout */
.panel{background:linear-gradient(150deg,rgba(56,189,248,.08),rgba(167,139,250,.06));
  border:1px solid var(--line-strong);border-radius:18px;padding:36px}

/* author strip */
.author{display:flex;gap:24px;align-items:center;max-width:760px;margin:0 auto;
  background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--line);
  border-radius:16px;padding:26px 30px}
.author img{flex:0 0 96px;width:96px;height:96px;border-radius:14px;object-fit:cover;border:1px solid var(--line-strong)}
.author p{margin:0;color:var(--muted);font-size:15.5px}
.author strong{color:var(--ink)}

/* email capture */
.capture{max-width:600px;margin:0 auto}
.capture form{display:flex;gap:10px;margin-top:22px}
.capture input{flex:1;min-width:0;background:var(--panel-2);border:1px solid var(--line-strong);color:var(--ink);
  font:16px var(--sans);padding:14px 16px;border-radius:10px}
.capture input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(56,189,248,.16)}
.capture .note{font-family:var(--mono);font-size:12px;color:var(--faint);margin-top:12px;text-align:center}
.capture .msg{margin-top:14px;font-size:15px;text-align:center;min-height:1.2em}
.capture .msg.ok{color:var(--emerald)}
.capture .msg.err{color:#fca5a5}
.capture.done form{display:none}

/* locale ribbon on home */
.langs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:8px}
.langs a{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:100px;
  padding:8px 16px;color:var(--muted);font-size:14px;background:rgba(148,163,184,.04)}
.langs a:hover{border-color:var(--cyan);color:var(--ink)}

/* prose (sample / about) */
.prose{max-width:720px;margin:0 auto;font-size:18px;line-height:1.72}
.prose h1{font-size:38px;text-align:left}
.prose h2{font-size:25px;text-align:left;margin:36px 0 10px}
.prose p{margin:0 0 20px;color:#d6ddec}
.prose em{color:var(--ink)}
.prose .tip{background:rgba(52,211,153,.07);border-left:3px solid var(--emerald);border-radius:0 10px 10px 0;
  padding:16px 20px;margin:26px 0;font-size:16px;color:var(--muted)}
.prose .tip b{color:var(--emerald);font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:6px}
.chapno{font-family:var(--mono);color:var(--cyan);letter-spacing:.14em;font-size:13px;text-transform:uppercase}

/* footer */
footer{border-top:1px solid var(--line);padding:40px 0;color:var(--faint);font-size:13.5px}
.footrow{display:flex;flex-wrap:wrap;gap:14px 22px;align-items:center;justify-content:space-between}
footer a{color:var(--muted)}
footer .flinks{display:flex;flex-wrap:wrap;gap:16px}

/* utility */
.center{text-align:center}
.mt-lg{margin-top:40px}
.divider-note{text-align:center;color:var(--faint);font-family:var(--mono);font-size:12.5px;margin-top:14px}

/* ---------- responsive ---------- */
@media(max-width:880px){
  .hero-grid{grid-template-columns:1fr;gap:30px;text-align:center}
  .hero .sub{margin-left:auto;margin-right:auto}
  .cta-row{justify-content:center}
  .trust{justify-content:center}
  .hero-book{order:-1}
  h1{font-size:44px}
}
@media(max-width:720px){
  .nav{display:none}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  h1{font-size:36px}.hero{padding:36px 0 16px}
  .features{grid-template-columns:1fr}
  .editions{grid-template-columns:1fr}
  .author{flex-direction:column;text-align:center}
  .capture form{flex-direction:column}
  .panel{padding:26px 20px}
  h2{font-size:27px}
}