/* Promo page. Plain CSS. Tokens on :root, dark follows the system unless the reader chose a theme. */
:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --fg: #1d1b22;
  --muted: #5d5967;
  --line: #e3e0d8;
  --accent: #4b3bd1;
  --accent-fg: #ffffff;
  --band: #f1eee7;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15141a; --surface: #1d1c24; --fg: #e8e6ee; --muted: #a8a4b6; --line: #2b2934;
    --accent: #9d93ff; --accent-fg: #15141a; --band: #1b1a22; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #15141a; --surface: #1d1c24; --fg: #e8e6ee; --muted: #a8a4b6; --line: #2b2934;
  --accent: #9d93ff; --accent-fg: #15141a; --band: #1b1a22; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--fg); font: 18px/1.65 var(--serif); }
a { color: var(--accent); text-underline-offset: .15em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
code { font: .86em var(--mono); background: var(--band); padding: .1em .35em; border-radius: 5px; }
h1, h2, h3 { font-family: var(--sans); text-wrap: balance; margin: 0; }
p { text-wrap: pretty; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-fg); padding: 8px 12px; border-radius: 6px; font: 600 14px var(--sans); z-index: 30; }
.skip:focus { left: 8px; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px clamp(16px, 4vw, 40px); font: 600 15px var(--sans);
  background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line);
}
.wordmark { color: var(--fg); text-decoration: none; font-weight: 800; display: inline-flex; align-items: center; min-height: 44px; }
.top nav { display: flex; align-items: center; gap: 18px; }
.top nav a { color: var(--fg); text-decoration: none; }
.top nav a:hover { color: var(--accent); }
.top .pill { background: var(--accent); color: var(--accent-fg); padding: 9px 14px; border-radius: 99px; }
.top .pill:hover { color: var(--accent-fg); filter: brightness(1.08); }

/* Hero */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(24px, 5vw, 64px); align-items: center;
  max-width: 1120px; margin-inline: auto; padding: clamp(32px, 6vw, 72px) clamp(16px, 4vw, 40px);
}
.eyebrow { margin: 0 0 14px; font: 700 13px var(--sans); text-transform: uppercase; letter-spacing: .1em; color: var(--accent); }
.hero h1 { font-size: clamp(2.2rem, 5.2vw, 3.7rem); line-height: 1.05; font-weight: 800; letter-spacing: -.02em; }
.lead { font: 1.25rem/1.55 var(--sans); color: var(--muted); margin: 22px 0 0; max-width: 34em; }
.lead strong { color: var(--fg); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.cta.center { justify-content: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 22px;
  font: 700 16px var(--sans); color: var(--fg); background: var(--surface); text-decoration: none;
  border: 1px solid var(--line); border-radius: 12px; cursor: pointer;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.primary:hover { filter: brightness(1.08); color: var(--accent-fg); }
.btn:disabled { opacity: .55; cursor: not-allowed; filter: none; }
.fine { font: 14px/1.5 var(--sans); color: var(--muted); margin: 16px 0 0; }

.phone { justify-self: center; width: min(100%, 330px); }
.phone iframe {
  display: block; width: 100%; height: min(640px, 78vh); border: 8px solid var(--fg); border-radius: 34px;
  background: var(--surface); box-shadow: 0 24px 60px -24px rgba(0, 0, 0, .45);
}
.phone-note { margin: 14px 4px 0; font: 14px/1.5 var(--sans); color: var(--muted); text-align: center; }

/* Value band */
.band { background: var(--band); border-block: 1px solid var(--line); }
.facts { list-style: none; margin: 0 auto; padding: 28px clamp(16px, 4vw, 40px); max-width: 1120px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; font: 15px/1.5 var(--sans); color: var(--muted); }
.facts strong { display: block; color: var(--fg); font-size: 16px; margin-bottom: 4px; }

/* Sections */
.wrap { max-width: 1120px; margin-inline: auto; padding: clamp(40px, 7vw, 88px) clamp(16px, 4vw, 40px) 0; }
.wrap.narrow, .narrow { max-width: 760px; }
.wrap h2, .get h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); line-height: 1.15; font-weight: 800; letter-spacing: -.01em; margin-bottom: 18px; }
.section-lead { font: 1.1rem/1.6 var(--sans); color: var(--muted); max-width: 40em; margin: 0 0 28px; }

.chapters { list-style: none; counter-reset: ch; margin: 0; padding: 0; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.chapters.extras { counter-reset: ch 5; }
.chapters li { counter-increment: ch; padding: 20px 22px 20px 70px; position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.chapters li::before { content: counter(ch); position: absolute; left: 20px; top: 18px; width: 36px; height: 36px; display: grid; place-items: center; font: 800 16px var(--sans); background: var(--accent); color: var(--accent-fg); border-radius: 50%; }
.extras li::before { background: var(--band); color: var(--fg); border: 1px solid var(--line); }
.chapters h3 { font-size: 1.1rem; line-height: 1.3; margin-bottom: 6px; }
.chapters p { margin: 0; font: 15px/1.55 var(--sans); color: var(--muted); }
.extras-title { font-size: 1rem; margin: 30px 0 12px; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 5vw, 64px); }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; font: 16px/1.55 var(--sans); }
.ticks li { padding-left: 30px; position: relative; }
.ticks li::before { content: ""; position: absolute; left: 4px; top: .42em; width: 12px; height: 7px; border-left: 3px solid var(--accent); border-bottom: 3px solid var(--accent); transform: rotate(-45deg); }

.author p { font-size: 1.1rem; max-width: 40em; }

.get { margin-top: clamp(48px, 8vw, 96px); background: var(--band); border-block: 1px solid var(--line); padding: clamp(40px, 7vw, 80px) 0; text-align: center; }
.get .wrap { padding-top: 0; }
.get p { font-size: 1.1rem; }
.price { font: 800 clamp(1.6rem, 4vw, 2.4rem) var(--sans) !important; margin: 18px 0 0; }

details { border-bottom: 1px solid var(--line); padding: 4px 0; }
summary { cursor: pointer; padding: 14px 0; font: 700 17px var(--sans); list-style-position: outside; }
details p { margin: 0 0 16px; font: 16px/1.6 var(--sans); color: var(--muted); }

.foot { margin-top: clamp(48px, 8vw, 96px); padding: 32px clamp(16px, 4vw, 40px) 48px; border-top: 1px solid var(--line); text-align: center; font: 14px/1.7 var(--sans); color: var(--muted); }
.foot p { margin: 4px 0; }
.foot .theme { min-height: 44px; font: inherit; color: var(--accent); background: none; border: 0; padding: 4px; cursor: pointer; text-decoration: underline; text-underline-offset: .15em; }

@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; }
  .top nav a:not(.pill) { display: none; }
}
@media (max-width: 480px) {
  body { font-size: 17px; }
  .facts { grid-template-columns: 1fr; }
  .chapters { grid-template-columns: 1fr; }
  .cta .btn { width: 100%; }
}

a.btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
a.btn[aria-disabled="true"]:hover { border-color: var(--accent); filter: none; color: var(--accent-fg); }
.ticks[class] { text-align: left; }