/* ============================================================
   Digital Energy B — Sistema de diseño
   Minimalista, neutros sobrios + naranja Bitcoin
   ============================================================ */

:root {
  /* Neutros cálidos */
  --bg:        #faf9f7;
  --bg-2:      #f2efe9;
  --bg-3:      #ece8e0;
  --ink:       #16140f;
  --ink-2:     #56524a;
  --ink-3:     #8b8579;
  --line:      #e4dfd5;
  --line-2:    #d4cec1;

  /* Bandas oscuras */
  --dark:      #131210;
  --dark-2:    #1c1a16;
  --on-dark:   #f4f2ec;
  --on-dark-2: #a39d90;
  --line-dark: #2c2a24;

  /* Acento Bitcoin */
  --accent:    #f7931a;
  --accent-2:  #ffae44;
  --accent-ink:#b9690a;   /* naranja legible sobre fondo claro */

  /* Tipografía */
  --display: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --body:    "Hanken Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Layout */
  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 48px);
  --section-y: clamp(72px, 11vw, 140px);
  --radius: 14px;
  --radius-sm: 9px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01";
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

::selection { background: var(--accent); color: #fff; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(56px, 8vw, 96px); }

.dark-band {
  background: var(--dark);
  color: var(--on-dark);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
p { margin: 0; }
.lead {
  font-size: clamp(1.15rem, 1.9vw, 1.4rem);
  line-height: 1.55;
  color: var(--ink-2);
  text-wrap: pretty;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-ink);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
}
.dark-band .eyebrow { color: var(--accent-2); }
.dark-band .eyebrow::before { background: var(--accent); }

.h-display { font-size: clamp(2.7rem, 6.4vw, 5.2rem); }
.h-section { font-size: clamp(2rem, 4.1vw, 3.3rem); }
.h-sub     { font-size: clamp(1.25rem, 2.1vw, 1.65rem); font-weight: 600; }

.muted { color: var(--ink-2); }
.accent-text { color: var(--accent-ink); }
.dark-band .accent-text { color: var(--accent-2); }

/* number / index label */
.idx {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
.dark-band .idx { color: var(--on-dark-2); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--body);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  padding: 15px 26px;
  border-radius: 100px;
  border: 1px solid transparent;
  transition: transform .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: #1a1205;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-2); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-2);
}
.btn-ghost:hover { border-color: var(--ink); }
.dark-band .btn-ghost { color: var(--on-dark); border-color: var(--line-dark); }
.dark-band .btn-ghost:hover { border-color: var(--on-dark); }
.btn-dark {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.btn-dark:hover { background: #2a2720; }
.btn-arrow svg { transition: transform .2s ease; }
.btn:hover .btn-arrow svg { transform: translateX(3px); }

/* ---------- Navbar ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.nav.is-scrolled {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.brand .b-mark { color: var(--accent-ink); }
.brand small {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-left: 8px;
  align-self: center;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav__links a {
  font-size: 0.96rem;
  color: var(--ink-2);
  transition: color .15s ease;
  position: relative;
}
.nav__links a:hover, .nav__links a.is-active { color: var(--ink); }
.nav__cta { display: flex; align-items: center; gap: 14px; }
.nav__burger {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  background: transparent;
  align-items: center; justify-content: center;
}
.nav__burger span {
  display: block; width: 18px; height: 1.6px; background: var(--ink);
  position: relative;
}
.nav__burger span::before, .nav__burger span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.6px; background: var(--ink);
}
.nav__burger span::before { top: -6px; }
.nav__burger span::after { top: 6px; }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 72px 0 auto 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 16px var(--gutter) 28px;
  z-index: 55;
  display: none;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  padding: 14px 4px;
  font-family: var(--display);
  font-size: 1.4rem;
  border-bottom: 1px solid var(--line);
}
.mobile-menu .btn { margin-top: 18px; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; }
.hero__inner {
  padding-top: clamp(48px, 8vw, 96px);
  padding-bottom: clamp(48px, 8vw, 110px);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: end;
}
.hero h1 { margin-bottom: 26px; }
.hero h1 .ln { display: block; }
.hero__sub { max-width: 30ch; }
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.hero__note {
  margin-top: 20px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}
.hero__aside {
  border-left: 1px solid var(--line);
  padding-left: clamp(24px, 3vw, 40px);
}
.hero__stat { padding-block: 20px; border-bottom: 1px solid var(--line); }
.hero__stat:first-child { padding-top: 0; }
.hero__stat:last-child { border-bottom: 0; }
.hero__stat .n {
  font-family: var(--display);
  font-size: clamp(2rem, 3vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
}
.hero__stat .n b { color: var(--accent-ink); font-weight: 600; }
.hero__stat .l { font-size: 0.92rem; color: var(--ink-2); margin-top: 6px; }

/* big watermark glyph */
.glyph-bg {
  position: absolute;
  font-family: var(--display);
  font-weight: 700;
  color: var(--bg-3);
  line-height: 1;
  z-index: 0;
  user-select: none;
  pointer-events: none;
}

/* ---------- Marquee / trust strip ---------- */
.trust {
  border-block: 1px solid var(--line);
  background: var(--bg-2);
}
.trust__inner {
  display: flex;
  align-items: center;
  gap: 14px 38px;
  flex-wrap: wrap;
  padding-block: 26px;
}
.trust__label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.trust__item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 500;
  font-size: 0.98rem;
  color: var(--ink-2);
}
.trust__item .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* ---------- Section header ---------- */
.sec-head { max-width: 720px; margin-bottom: clamp(40px, 5vw, 64px); }
.sec-head .eyebrow { margin-bottom: 18px; }
.sec-head p { margin-top: 18px; }

/* ---------- Problem (dark) ---------- */
.problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: clamp(40px, 5vw, 64px);
}
.problem__cell {
  background: var(--dark);
  padding: clamp(26px, 3vw, 40px);
}
.problem__cell .idx { display: block; margin-bottom: 26px; }
.problem__cell h3 { font-size: 1.35rem; margin-bottom: 12px; }
.problem__cell p { color: var(--on-dark-2); font-size: 1rem; line-height: 1.6; }
.problem__cell .big {
  font-family: var(--display);
  font-size: clamp(2.6rem,4vw,3.4rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--accent-2);
  margin-bottom: 4px;
}

/* ---------- Course / curriculum ---------- */
.course__top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}
.video-frame {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(135deg, var(--bg-2) 0 14px, var(--bg-3) 14px 28px);
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.video-frame .play {
  width: 76px; height: 76px;
  border-radius: 50%;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 18px 40px -12px rgba(247,147,26,.55);
  transition: transform .2s ease;
}
.video-frame:hover .play { transform: scale(1.06); }
.video-frame .play svg { margin-left: 4px; }
.video-frame .cap {
  position: absolute;
  bottom: 14px; left: 16px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.video-frame .badge {
  position: absolute;
  top: 14px; right: 14px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  background: var(--ink);
  color: var(--bg);
  padding: 6px 11px;
  border-radius: 100px;
}

.feat-list { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 2px; }
.feat-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.feat-list li:last-child { border-bottom: 1px solid var(--line); }
.feat-list .ck {
  flex: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.feat-list b { font-weight: 600; }
.feat-list span.d { display: block; color: var(--ink-2); font-size: 0.98rem; }

/* curriculum modules */
.modules {
  margin-top: clamp(44px, 5vw, 72px);
  border-top: 1px solid var(--line);
}
.module {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding: 24px 6px;
  border-bottom: 1px solid var(--line);
  transition: background .15s ease, padding-left .2s ease;
}
.module:hover { background: var(--bg-2); padding-left: 16px; }
.module .num { font-family: var(--mono); color: var(--accent-ink); font-size: 0.9rem; }
.module h4 { font-size: clamp(1.1rem, 1.7vw, 1.4rem); font-weight: 600; }
.module p { color: var(--ink-2); font-size: 0.98rem; margin-top: 6px; max-width: 60ch; }
.module .meta { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-3); white-space: nowrap; }

/* ---------- About / founder ---------- */
.about__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}
.about__id {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: 16px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: color-mix(in srgb, #fff 4%, transparent);
  padding: clamp(30px, 4vw, 46px) clamp(24px, 3vw, 38px);
}
.about__avatar {
  width: clamp(130px, 16vw, 168px); aspect-ratio: 1; border-radius: 50%;
  display: grid; place-items: center; overflow: hidden;
  background: radial-gradient(circle at 50% 35%, color-mix(in srgb, var(--accent) 22%, transparent), color-mix(in srgb, #fff 6%, transparent));
  border: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  color: var(--on-dark-2);
}
.about__avatar img { width: 100%; height: 100%; object-fit: cover; }
.about__role {
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-2); font-weight: 600;
}
.about__chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.about__chips span {
  font-family: var(--mono); font-size: 0.76rem; color: var(--on-dark);
  border: 1px solid var(--line-dark); border-radius: 999px; padding: 6px 13px;
  background: color-mix(in srgb, #fff 5%, transparent);
}
.about__social { display: flex; gap: 12px; margin-top: 2px; }
.about__social a {
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center;
  border: 1px solid var(--line-dark); color: var(--on-dark-2);
  transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
}
.about__social a:hover {
  color: var(--accent-2); border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  background: color-mix(in srgb, var(--accent) 12%, transparent); transform: translateY(-2px);
}
.cred-list { list-style: none; margin: 30px 0 0; padding: 0; display: grid; gap: 18px; }
.cred-list li { display: flex; gap: 16px; align-items: baseline; }
.cred-list .yr {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--accent-2);
  min-width: 88px;
}
.cred-list .tx { color: var(--on-dark); font-size: 1.02rem; }
.cred-list .tx span { color: var(--on-dark-2); display: block; font-size: 0.92rem; }

/* ---------- Services ---------- */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: clamp(40px, 5vw, 60px);
}
.svc {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(26px, 3vw, 36px);
  background: var(--bg);
  transition: border-color .2s ease, transform .2s ease;
}
.svc:hover { border-color: var(--line-2); transform: translateY(-3px); }
.svc .ico {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--bg-2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
}
.svc h3 { font-size: 1.3rem; margin-bottom: 10px; }
.svc p { color: var(--ink-2); font-size: 1rem; }
.svc .tag {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- Testimonials ---------- */
.tst-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: clamp(40px, 5vw, 60px);
}
.tst {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(24px, 3vw, 34px);
  display: flex; flex-direction: column;
  background: var(--bg);
}
.tst .quote {
  font-family: var(--display);
  font-size: 1.05rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
  font-weight: 500;
  margin-bottom: 24px;
  text-wrap: pretty;
}
.tst .who { margin-top: auto; display: flex; align-items: center; gap: 12px; }
.tst .av {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--bg-3);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--display); font-weight: 600; color: var(--ink-2);
  font-size: 0.95rem;
}
.tst .who b { display: block; font-weight: 600; font-size: 0.96rem; }
.tst .who span { color: var(--ink-3); font-size: 0.85rem; }

/* ---------- Pricing ---------- */
.pricing__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: stretch;
}
.price-card {
  border-radius: var(--radius);
  background: var(--dark);
  color: var(--on-dark);
  padding: clamp(30px, 4vw, 48px);
  position: relative;
  overflow: hidden;
}
.price-card .tier {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-2);
}
.price-card h3 { font-size: 1.7rem; margin: 14px 0 22px; }
.price-card .amount { display: flex; align-items: baseline; gap: 8px; }
.price-card .amount .cur { font-family: var(--mono); font-size: 1.1rem; color: var(--on-dark-2); }
.price-card .amount .val { font-family: var(--display); font-size: clamp(3rem, 6vw, 4.4rem); font-weight: 600; letter-spacing: -0.03em; line-height: 1; }
.price-card .amount .per { color: var(--on-dark-2); font-size: 0.95rem; }
.price-card .incl { list-style: none; margin: 28px 0; padding: 0; display: grid; gap: 13px; }
.price-card .incl li { display: flex; gap: 12px; align-items: flex-start; color: var(--on-dark); font-size: 0.98rem; }
.price-card .incl .ck { flex: none; color: var(--accent-2); margin-top: 3px; }
.price-card .btn { width: 100%; margin-top: 6px; }
.price-card .reassure { text-align: center; margin-top: 16px; font-family: var(--mono); font-size: 0.74rem; color: var(--on-dark-2); }

/* payment selector */
.pay { display: flex; flex-direction: column; }
.pay h3 { font-size: 1.5rem; margin-bottom: 6px; }
.pay > p { color: var(--ink-2); margin-bottom: 22px; }
.pay__tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.pay__tab {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 17px;
  border: 1px solid var(--line-2);
  border-radius: 100px;
  background: var(--bg);
  font-weight: 600; font-size: 0.92rem;
  color: var(--ink-2);
  transition: all .15s ease;
}
.pay__tab[aria-selected="true"] {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.pay__panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(24px, 3vw, 34px);
  background: var(--bg-2);
  flex: 1;
}
.pay__panel[hidden] { display: none; }
.pay__panel .pp-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.pay__panel .pp-ico {
  width: 44px; height: 44px; border-radius: 11px;
  background: var(--bg); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-weight: 600; font-size: 0.95rem; color: var(--accent-ink);
}
.pay__panel h4 { font-size: 1.15rem; }
.pay__panel p { color: var(--ink-2); font-size: 0.98rem; }
.pay__panel .pp-note {
  margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line-2);
  font-family: var(--mono); font-size: 0.8rem; color: var(--ink-3); line-height: 1.5;
}
.pay__panel .pp-note b { color: var(--accent-ink); }
.pay__panel .pp-btn { margin-top: 18px; width: 100%; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin-inline: auto; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item:first-child { border-top: 1px solid var(--line); }
.faq__q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  background: none; border: none;
  padding: 26px 4px;
  text-align: left;
  font-family: var(--display);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.faq__q .sign {
  flex: none; position: relative; width: 18px; height: 18px;
}
.faq__q .sign::before, .faq__q .sign::after {
  content: ""; position: absolute; background: var(--accent-ink); transition: transform .25s ease, opacity .25s ease;
}
.faq__q .sign::before { top: 8px; left: 0; width: 18px; height: 2px; }
.faq__q .sign::after  { left: 8px; top: 0; width: 2px; height: 18px; }
.faq__item.is-open .sign::after { transform: scaleY(0); opacity: 0; }
.faq__a {
  overflow: hidden;
  max-height: 0;
  transition: max-height .3s ease;
}
.faq__a-inner { padding: 0 4px 26px; color: var(--ink-2); max-width: 64ch; }
.dark-band .faq__q { color: var(--on-dark); }
.dark-band .faq__a-inner { color: var(--on-dark-2); }
.faq__a-inner .faq-link { color: var(--accent-2); font-weight: 600; white-space: nowrap; border-bottom: 1px solid transparent; transition: border-color .2s ease; }
.faq__a-inner .faq-link:hover { border-bottom-color: var(--accent-2); }

/* ---------- Alumnos fundadores ---------- */
.founders {
  position: relative;
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 7%, var(--bg)) 0%, var(--bg) 62%);
  padding: clamp(30px, 4vw, 54px);
  overflow: hidden;
}
.founders__badge {
  position: absolute; top: 0; right: clamp(20px, 4vw, 44px);
  background: var(--accent); color: #1a1205;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 600; padding: 7px 16px; border-radius: 0 0 10px 10px;
}
.founders__grid { display: grid; grid-template-columns: 1.6fr 0.9fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.founders__main .lead { max-width: 52ch; }
.founders__list { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 11px; }
.founders__list li { position: relative; padding-left: 26px; color: var(--ink-2); font-size: 1rem; }
.founders__list li::before { content: "→"; position: absolute; left: 0; color: var(--accent-ink); font-weight: 600; }
.founders__list s { color: var(--ink-3); }
.founders__list b { color: var(--ink); }
.founders__fine { font-family: var(--mono); font-size: 0.76rem; color: var(--ink-3); margin-top: 16px; }
.founders__cupos {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg); padding: clamp(24px, 3vw, 34px);
  text-align: center; display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.founders__cupos-n { font-family: var(--display); font-weight: 700; line-height: 1; }
.founders__cupos-n b { font-size: clamp(3.4rem, 7vw, 5rem); color: var(--accent-ink); }
.founders__cupos-n span { font-size: 1.4rem; color: var(--ink-3); margin-left: 4px; }
.founders__cupos-l { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2); }
.founders__dots { display: flex; gap: 9px; margin-top: 12px; }
.founders__dots i { width: 16px; height: 16px; border-radius: 50%; background: var(--accent); display: block; }
.founders__dots i.taken { background: var(--line-2); }
@media (max-width: 760px) {
  .founders__grid { grid-template-columns: 1fr; }
  .founders__badge { right: auto; left: clamp(20px, 4vw, 44px); }
}
/* estado "cupo completo" */
.founders__full { display: none; text-align: center; padding: 10px 0 6px; }
.founders.is-full .founders__grid { display: none; }
.founders.is-full > .founders__badge { display: none; }
.founders.is-full .founders__full { display: block; }
.founders__badge--full { background: var(--ink); color: var(--on-dark); }

/* ---------- Final CTA ---------- */
.cta-final { text-align: center; }
.cta-final h2 { margin-bottom: 24px; }
.cta-final .btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-final .glyph {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(4rem, 12vw, 9rem);
  color: var(--accent-2);
  line-height: 1; margin-bottom: 24px;
}

/* ---------- Formulario de consulta ---------- */
.cform {
  max-width: 640px; margin: 34px auto 0; text-align: left;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-2); padding: clamp(24px, 3.5vw, 40px);
  display: grid; gap: 18px;
}
.cform__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.cform .field { display: grid; gap: 7px; }
.cform .field > span {
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-2);
}
.cform .field > span em { color: var(--ink-3); font-style: normal; text-transform: none; letter-spacing: 0; }
.cform input, .cform select, .cform textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line-2); border-radius: 10px;
  padding: 12px 14px; transition: border-color .18s ease, box-shadow .18s ease;
}
.cform textarea { resize: vertical; min-height: 96px; }
.cform input::placeholder, .cform textarea::placeholder { color: var(--ink-3); }
.cform input:focus, .cform select:focus, .cform textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.cform__submit { justify-self: start; margin-top: 4px; }
.cform__fine { font-size: 0.88rem; color: var(--ink-3); margin: 0; }
.cform__fine a { color: var(--accent-ink); border-bottom: 1px solid transparent; }
.cform__fine a:hover { border-bottom-color: currentColor; }
.cform__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.cform input:disabled { background: var(--bg-2); color: var(--ink-3); cursor: not-allowed; }

/* ---------- Planes de consultoría ---------- */
.plans {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
  margin-top: clamp(40px, 5vw, 60px); align-items: stretch;
}
.plan {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg);
  padding: clamp(26px, 3vw, 34px); display: flex; flex-direction: column; gap: 20px;
  position: relative;
}
.plan--featured {
  border-color: var(--accent);
  box-shadow: 0 18px 50px -28px color-mix(in srgb, var(--accent) 60%, transparent);
}
.plan__badge {
  position: absolute; top: 0; right: 24px; transform: translateY(-50%);
  background: var(--accent); color: #1a1205;
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
  font-weight: 600; padding: 5px 13px; border-radius: 999px;
}
.plan__name { font-size: 1.5rem; }
.plan__tag { color: var(--ink-2); font-size: 0.98rem; margin-top: 6px; }
.plan__price { border-block: 1px solid var(--line); padding: 14px 0; }
.plan__price-soon { font-family: var(--mono); font-size: 0.9rem; color: var(--ink-3); }
.plan__price-n { font-family: var(--display); font-weight: 700; font-size: 2rem; color: var(--ink); }
.plan__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 11px; flex: 1; }
.plan__list li { position: relative; padding-left: 26px; color: var(--ink-2); font-size: 0.98rem; }
.plan__list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent-ink); font-weight: 700; }
.plan__list b { color: var(--ink); }
.plan__cta { justify-content: center; text-align: center; width: 100%; margin-top: 4px; }
@media (max-width: 900px) {
  .plans { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
}
@media (max-width: 620px) {
  .cform__row { grid-template-columns: 1fr; }
  .cform__submit { justify-self: stretch; text-align: center; justify-content: center; }
}
@media (max-width: 760px) {
  .about__id { max-width: 420px; margin-inline: auto; }
}

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line-dark); }
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-block: clamp(48px, 6vw, 72px);
}
.footer h4 {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-dark-2);
  font-weight: 500;
  margin-bottom: 18px;
}
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.footer a { color: var(--on-dark-2); font-size: 0.96rem; transition: color .15s ease; }
.footer a:hover { color: var(--on-dark); }
.footer__brand .brand { font-size: 1.4rem; color: var(--on-dark); margin-bottom: 14px; }
.footer__brand p { color: var(--on-dark-2); font-size: 0.96rem; max-width: 34ch; }
.footer__bottom {
  border-top: 1px solid var(--line-dark);
  padding-block: 24px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 0.76rem; color: var(--on-dark-2);
  letter-spacing: 0.02em;
}

/* ---------- Reveal animation ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
  .reveal.is-in { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; align-items: start; }
  .hero__aside { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 8px; }
  .hero__sub { max-width: 46ch; }
  .course__top { grid-template-columns: 1fr; }
  .about__grid { grid-template-columns: 1fr; }
  .pricing__grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  body { font-size: 17px; }
  .nav__links, .nav__cta .btn { display: none; }
  .nav__burger { display: flex; }
  .problem__grid { grid-template-columns: 1fr; }
  .svc-grid { grid-template-columns: 1fr; }
  .tst-grid { grid-template-columns: 1fr; }
  .module { grid-template-columns: 40px 1fr; }
  .module .meta { grid-column: 2; }
  .footer__top { grid-template-columns: 1fr; gap: 28px; }
}