/* The AI Plug: gold on near-black, Arial Black headlines */
:root {
  --gold: #ffc400;
  --gold-soft: rgba(255, 196, 0, .14);
  --ink: #0f0f0f;
  --panel: #181818;
  --line: #2a2a2a;
  --text: #f2f2f2;
  --muted: #a9a9a9;
  --radius: 18px;
  --head: "Arial Black", "Arial Bold", Arial, sans-serif;
  --body: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--text); font: 17px/1.6 var(--body); }
img, video { display: block; max-width: 100%; }
a { color: var(--gold); }
h1, h2, h3 { font-family: var(--head); line-height: 1.05; margin: 0 0 .4em; letter-spacing: -.01em; }
h1 { font-size: clamp(38px, 6.4vw, 72px); }
h2 { font-size: clamp(28px, 4.2vw, 46px); }
h3 { font-size: 20px; }
p { margin: 0 0 1em; }
.y { color: var(--gold); }
.muted { color: var(--muted); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.kicker { font-family: var(--head); font-size: 13px; letter-spacing: .16em; text-transform: uppercase; color: var(--gold); margin-bottom: 12px; }
section { padding: 72px 0; }
section + section { border-top: 1px solid var(--line); }

/* header */
.top { position: sticky; top: 0; z-index: 10; background: rgba(15, 15, 15, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-family: var(--head); font-size: 18px; white-space: nowrap; }
.brand img { width: 38px; height: 38px; border-radius: 50%; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav a:hover { color: var(--text); }
.nav a.btn { color: #111; }
@media (max-width: 720px) { .nav a.hide-sm { display: none; } }

/* buttons */
.btn { display: inline-block; background: var(--gold); color: #111; font-family: var(--head); font-size: 16px; text-decoration: none; padding: 14px 22px; border-radius: 12px; border: 0; cursor: pointer; }
.btn:hover { filter: brightness(1.08); }
.btn.small { padding: 9px 14px; font-size: 14px; }
.btn.ghost { background: transparent; color: var(--text); border: 1.5px solid var(--line); }

/* hero */
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero p.lead { font-size: 20px; color: #dcdcdc; max-width: 34ch; }
.hero .ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } }

/* phone-framed video */
.phone { position: relative; width: min(340px, 100%); margin: 0 auto; border-radius: 34px; padding: 10px; background: #000; box-shadow: 0 0 0 2px var(--line), 0 30px 80px rgba(255, 196, 0, .12); }
.phone video { width: 100%; aspect-ratio: 9 / 16; border-radius: 26px; object-fit: cover; background: #111; }
.sound { position: absolute; right: 22px; bottom: 22px; background: rgba(0, 0, 0, .7); color: #fff; border: 1px solid rgba(255, 255, 255, .25); border-radius: 999px; padding: 8px 14px; font: 600 14px var(--body); cursor: pointer; }

/* two-column story */
.split { display: grid; grid-template-columns: .85fr 1.15fr; gap: 48px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } .split .phone { order: 2; } }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 28px; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.step .n { font-family: var(--head); color: var(--gold); font-size: 34px; line-height: 1; margin-bottom: 10px; }
.step p { color: var(--muted); font-size: 15.5px; margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* lesson slides */
.slides { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(230px, 1fr); gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 10px; margin-top: 26px; }
.slides img { border-radius: 14px; scroll-snap-align: start; border: 1px solid var(--line); }

/* signup */
.signup { background: radial-gradient(ellipse at 30% 0%, var(--gold-soft), transparent 60%), var(--panel); border: 1px solid var(--line); border-radius: 26px; padding: 40px; display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: center; }
.signup img { border-radius: 14px; box-shadow: 0 20px 50px rgba(0, 0, 0, .5); }
@media (max-width: 760px) { .signup { grid-template-columns: 1fr; padding: 26px; } .signup img { max-width: 200px; } }
ul.checks { list-style: none; padding: 0; margin: 0 0 20px; }
ul.checks li { padding-left: 30px; position: relative; margin-bottom: 8px; }
ul.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--gold); font-weight: 900; }
form.kit { display: flex; gap: 10px; flex-wrap: wrap; }
form.kit input { flex: 1 1 180px; min-width: 0; background: #0b0b0b; color: var(--text); border: 1.5px solid var(--line); border-radius: 12px; padding: 14px 16px; font: 16px var(--body); }
form.kit input:focus { outline: none; border-color: var(--gold); }
form.kit .btn { flex: 0 0 auto; }
.fine { font-size: 13px; color: var(--muted); margin-top: 12px; }
.form-note { display: none; font-size: 14px; color: var(--gold); margin-top: 10px; }

/* about */
.about { display: grid; grid-template-columns: 200px 1fr; gap: 36px; align-items: center; }
.about img { border-radius: 50%; }
@media (max-width: 640px) { .about { grid-template-columns: 1fr; } .about img { max-width: 160px; } }

/* follow */
.follow { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }

/* faq */
details { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; }
details p { margin: 10px 0 0; color: var(--muted); }

/* footer */
footer { border-top: 1px solid var(--line); padding: 36px 0 48px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; justify-content: space-between; }
footer a { color: var(--muted); }

/* focused landing page */
.landing { min-height: calc(100vh - 64px); display: flex; align-items: center; padding: 56px 0; }
.landing .grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: center; }
.landing .cover { border-radius: 18px; box-shadow: 0 30px 80px rgba(255, 196, 0, .12), 0 0 0 1px var(--line); max-width: 360px; margin: 0 auto; }
@media (max-width: 860px) {
  .landing { min-height: 0; padding: 28px 0 48px; }
  .landing .grid { grid-template-columns: 1fr; gap: 22px; }
  .landing .cover { max-width: 130px; margin: 0; }
}