:root {
  --bg: rgb(231, 230, 226);
  --ink: rgb(18, 18, 17);
  --sans: "Albert Sans", system-ui, sans-serif;
  --serif: "Newsreader", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --px: max(16px, 3.125vw);
  --line: color-mix(in srgb, var(--ink) 18%, transparent);
  --mute: color-mix(in srgb, var(--ink) 58%, transparent);
  --ease: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--bg); color: var(--ink); -webkit-text-size-adjust: 100%; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  font-family: var(--sans); font-size: 16px; line-height: 1.5; font-weight: 400;
  background: var(--bg); color: var(--ink);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img, svg { display: block; }
.mono { font-family: var(--mono); font-size: 12px; letter-spacing: .02em; text-transform: uppercase; font-weight: 400; }
.kicker { color: var(--mute); }

/* ---------- capa 3D ---------- */
#gl { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: 1; pointer-events: none; display: block; }

/* ---------- loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 50; background: var(--bg);
  display: grid; place-items: center; align-content: center; gap: 18px;
}
.loader__logo { width: 132px; height: 34px; color: var(--ink); }
.loader__pct { color: var(--mute); }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 22px var(--px);
  color: var(--ink);
}
.nav__logo svg { width: 92px; height: 24px; }
.nav__links { display: flex; gap: 28px; }
.nav__links a { position: relative; padding: 4px 0; opacity: .72; transition: opacity .2s ease; }
.nav__links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right; transition: transform .35s var(--ease);
}
@media (hover: hover) {
  .nav__links a:hover { opacity: 1; }
  .nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }
}

/* ---------- botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 24px; border-radius: 999px;
  background: var(--ink); color: var(--bg);
  font: 500 15px/1 var(--sans); letter-spacing: -.005em;
  border: 1px solid var(--ink);
  transition: transform .16s var(--ease), background-color .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn span { display: inline-block; transition: transform .25s var(--ease); }
.btn--sm { padding: 10px 16px; font-size: 13px; }
.btn--ghost { background: transparent; color: var(--ink); }
.btn:active { transform: scale(.97); }
@media (hover: hover) {
  .btn:hover span { transform: translate(2px, -2px); }
  .btn--ghost:hover { background: var(--ink); color: var(--bg); }
}
.btn:focus-visible, a:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }

/* ---------- escenas fijadas ---------- */
.scene { position: relative; height: calc(var(--h) * 1svh); }
.stage { position: sticky; top: 0; height: 100svh; overflow: hidden; z-index: 2; }
.stage > * { position: relative; z-index: 2; }
.anchor { position: absolute !important; z-index: 0 !important; pointer-events: none; transform: translate(-50%, -50%); }

/* foco de estudio detrás del bote en escenas oscuras */
.glow { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0;
  background: radial-gradient(40vw 50vh at 71% 56%, rgb(255 255 255 / .09), transparent 70%); }
.scene--hero .stage { cursor: grab; }
.is-dragging, .is-dragging * { cursor: grabbing !important; user-select: none; }

/* líneas partidas por SplitText */
.line-mask { overflow: clip; padding-bottom: .06em; margin-bottom: -.06em; }

/* ---------- 00 intro ---------- */
.anchor--hero { left: 64%; top: 49%; height: 74svh; width: 22svh; }
.hero__kicker { position: absolute; top: 96px; left: var(--px); }
.hero__rating { position: absolute; top: 96px; right: var(--px); color: var(--mute); }
.hero__rating span { color: var(--ink); margin-right: 8px; }
.hero__title {
  position: absolute; left: var(--px); bottom: calc(var(--px) + 8px);
  font-size: clamp(40px, 5.3vw, 110px); line-height: .96; font-weight: 500; letter-spacing: -.04em;
  max-width: 12em;
}
.hero__side {
  position: absolute; right: var(--px); bottom: calc(var(--px) + 14px);
  width: min(360px, 24vw); display: grid; gap: 22px;
}
.hero__side p { font-size: 16px; line-height: 1.45; color: var(--mute); }
.hero__ctas { display: grid; gap: 10px; justify-items: start; }
.hero__drag { position: absolute; left: 64%; top: 88%; transform: translateX(-50%); color: var(--mute); }
.hero__scroll { position: absolute; left: 50%; top: 96px; transform: translateX(-50%); color: var(--mute); }
.hero__scroll::after { content: ""; display: block; width: 1px; height: 38px; margin: 10px auto 0; background: currentColor; animation: drip 2.2s var(--ease) infinite; transform-origin: top; }
@keyframes drip { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- 01 sistema ---------- */
.anchor--man { left: 25%; top: 52%; height: 72svh; width: 20svh; }
.man { position: absolute; left: 46%; right: var(--px); top: 50%; transform: translateY(-50%); display: grid; gap: 34px; }
.man__text { font-size: clamp(26px, 3.25vw, 62px); line-height: 1.1; letter-spacing: -.028em; font-weight: 400; }
.man__text .w { opacity: .14; }
.man__facts { display: flex; gap: 38px; flex-wrap: wrap; }
.man__facts li { color: var(--mute); }
.man__facts span { color: var(--ink); }

/* ---------- 02 fórmulas ---------- */
.anchor--form { left: 71%; top: 52%; height: 78svh; width: 22svh; }
.form__kicker { position: absolute; top: 96px; left: var(--px); }
.panel {
  position: absolute !important; left: var(--px); top: 80px; bottom: 40px; align-content: center;
  width: min(540px, 46vw); display: grid; gap: 14px;
}
.panel:not([data-panel="focus"]) { opacity: 0; visibility: hidden; }
.panel__idx { color: var(--mute); }
.panel__name { font-family: var(--serif); font-weight: 300; font-size: clamp(76px, 10.5vw, 196px); line-height: .82; letter-spacing: -.035em; margin-left: -.04em; }
.panel__tag { font-size: 19px; font-weight: 500; }
.panel__tag .mono { color: var(--mute); font-size: 13px; }
.panel__lead { color: var(--mute); max-width: 40ch; }
.dose { width: 100%; border-collapse: collapse; margin: 6px 0 12px; font-size: 14px; }
.dose caption { text-align: left; color: var(--mute); padding-bottom: 6px; }
.dose tr { border-top: 1px solid var(--line); }
.dose th { text-align: left; font-weight: 400; padding: 7px 0; width: 44%; }
.dose td:last-child { text-align: right; width: 22%; font-size: 12px; }
.bar { display: block; height: 3px; background: var(--line); position: relative; }
.bar::after { content: ""; position: absolute; inset: 0; background: var(--ink); transform-origin: left; transform: scaleX(calc(max(var(--v), .02) * var(--p, 1))); }
.panel .btn { justify-self: start; }
.form__dots { position: absolute !important; right: var(--px); bottom: calc(var(--px) + 8px); display: flex; gap: 22px; }
.form__dots li { opacity: .3; }
.form__dots li:first-child { opacity: 1; }

/* ---------- 03 dentro ---------- */
.anchor--dentro { left: 50%; top: 57%; height: 56svh; width: 18svh; }
.dentro__head { position: absolute; top: 96px; left: var(--px); max-width: 620px; display: grid; gap: 16px; }
.h2 { font-size: clamp(32px, 3.6vw, 66px); line-height: 1.02; letter-spacing: -.035em; font-weight: 500; }
.callouts { position: absolute; inset: 0; z-index: 3; pointer-events: none; }
.callout {
  position: absolute; left: var(--cx); top: var(--cy); transform: translate(-100%, -50%);
  display: grid; gap: 2px; text-align: right; padding-right: 64px; opacity: 0;
}
.callout::after { content: ""; position: absolute; right: 0; top: 50%; width: 52px; height: 1px; background: var(--ink); transform: scaleX(var(--k, 1)); transform-origin: right; }
.callout--r { transform: translate(0, -50%); text-align: left; padding: 0 0 0 64px; }
.callout--r::after { left: 0; right: auto; transform-origin: left; }
.callout span { color: var(--mute); }
.callout b { font-family: var(--serif); font-weight: 300; font-size: clamp(34px, 3.4vw, 62px); line-height: 1; letter-spacing: -.02em; }
.dentro__note { position: absolute !important; right: var(--px); bottom: calc(var(--px) + 8px); color: var(--mute); }

/* ---------- 04 modo ---------- */
.modo__head { position: absolute; top: 96px; left: var(--px); display: grid; gap: 16px; max-width: 640px; }
.price { position: absolute !important; top: 96px; right: var(--px); width: 300px; display: grid; gap: 10px; justify-items: start; }
.price__now { font-size: 30px; font-weight: 500; letter-spacing: -.02em; line-height: 1.1; }
.price__now .mono { display: block; color: var(--mute); margin-bottom: 6px; }
.price__now s { font-size: 17px; color: var(--mute); font-weight: 400; margin-left: 6px; }
.price__save { font-size: 15px; margin-bottom: 6px; }
.price__micro { color: var(--mute); font-size: 11px; }
.modo__row { position: absolute !important; left: var(--px); right: var(--px); bottom: calc(var(--px) + 6px); display: grid; grid-template-columns: repeat(3, 1fr); }
.modo__col { position: relative; text-align: center; display: grid; gap: 4px; padding-top: 16px; border-top: 1px solid var(--line); }
.modo__col .mono { color: var(--mute); }
.modo__col h3 { font-family: var(--serif); font-weight: 300; font-size: clamp(34px, 3vw, 54px); line-height: 1; letter-spacing: -.02em; }
.modo__col p:last-child { color: var(--mute); font-size: 15px; }
.anchor--modo { left: 50%; top: auto; bottom: calc(100% + 3svh); height: 44svh; width: 14svh; transform: translateX(-50%); }

/* ---------- 05 essentials ---------- */
.ess__head { position: absolute; top: 96px; left: var(--px); display: grid; gap: 16px; }
.ess__grid { position: absolute !important; left: var(--px); right: var(--px); top: 25svh; display: grid; grid-template-columns: repeat(3, 1fr); }
.tier { position: relative; padding: 31svh 28px 0; border-left: 1px solid var(--line); display: grid; gap: 8px; align-content: start; }
.tier:first-child { border-left: 0; padding-left: 0; }
.tier .anchor--ess { left: 50%; top: 15.5svh; height: 27svh; width: 10svh; }
.tier__new { color: var(--mute); }
.tier h3 { font-family: var(--serif); font-weight: 300; font-size: clamp(34px, 3vw, 54px); line-height: 1; letter-spacing: -.02em; }
.tier__desc { color: var(--mute); font-size: 15px; max-width: 34ch; }
.spec { margin-top: 10px; font-size: 11px; }
.spec div { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-top: 1px solid var(--line); }
.spec dt { color: var(--mute); }
.ess__cta { position: absolute !important; left: var(--px); right: var(--px); bottom: calc(var(--px) + 6px); display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-top: 18px; border-top: 1px solid var(--line); }
.ess__cta p { font-size: 18px; }
.ess__cta .mono { color: var(--mute); margin-right: 12px; }
.ess__cta s { color: var(--mute); font-size: 15px; margin-left: 4px; }

/* ---------- 06 ficha ---------- */
.ficha { position: relative; z-index: 2; padding: 22svh var(--px) 18svh; }
.ficha__grid { display: grid; grid-template-columns: repeat(16, 1fr); gap: 0 1.2vw; }
.ficha__meta { grid-column: 1 / 5; display: grid; gap: 6px; align-content: start; color: var(--mute); position: sticky; top: 110px; align-self: start; }
.ficha__meta p:first-child { color: var(--ink); }
.ficha__body { grid-column: 6 / 15; display: grid; gap: 22px; }
.ficha__title { font-size: clamp(30px, 3.2vw, 58px); line-height: 1.04; letter-spacing: -.035em; font-weight: 500; margin-bottom: 24px; }
.ficha__body h3 { color: var(--mute); margin-top: 26px; padding-top: 14px; border-top: 1px solid var(--line); }
.ficha__abstract { font-family: var(--serif); font-size: clamp(19px, 1.5vw, 25px); line-height: 1.45; max-width: 62ch; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 20px; }
.stat { padding: 18px 0; border-top: 1px solid var(--ink); display: grid; gap: 8px; }
.stat .mono { color: var(--mute); }
.stat__n { font-size: clamp(48px, 5.4vw, 104px); font-weight: 400; letter-spacing: -.05em; line-height: .9; font-variant-numeric: tabular-nums; }
.stat__n small { font-size: .4em; color: var(--mute); letter-spacing: 0; }
.certs { display: flex; flex-wrap: wrap; gap: 8px 0; font-size: 18px; }
.certs li:not(:last-child)::after { content: "/"; margin: 0 14px; color: var(--mute); }
.bib { font-size: 13px; line-height: 1.7; text-transform: none; padding: 20px 22px; border: 1px solid var(--line); overflow-x: auto; white-space: pre; }

/* ---------- 07 cierre ---------- */
.anchor--ring { left: 50%; top: 40%; height: 30svh; width: 10svh; }
.end { position: absolute !important; left: 50%; top: 40%; transform: translate(-50%, -50%); display: grid; justify-items: center; gap: 22px; text-align: center; width: 100%; }
.end__title { font-size: clamp(46px, 7.4vw, 150px); font-weight: 500; letter-spacing: -.05em; line-height: .92; text-shadow: 0 4px 40px rgb(0 0 0 / .55); }
.foot { position: absolute !important; left: var(--px); right: var(--px); bottom: var(--px); display: grid; grid-template-columns: auto 1fr; align-items: end; gap: 16px 4vw; }
.foot__logo { grid-row: 1 / 3; width: auto; height: 15svh; aspect-ratio: 100 / 26; color: var(--ink); }
.foot__cols { display: grid; grid-template-columns: repeat(4, auto); gap: 12px 3vw; justify-content: end; }
.foot__cols p { display: grid; gap: 4px; text-transform: none; font-size: 13px; }
.foot__cols span { color: var(--mute); text-transform: uppercase; font-size: 11px; }
.foot__cols a { transition: opacity .2s; }
@media (hover: hover) { .foot__cols a:hover { opacity: .6; } }
.foot__legal { color: var(--mute); font-size: 10.5px; text-transform: none; justify-self: end; text-align: right; max-width: 70ch; }

/* ---------- móvil ---------- */
@media (max-width: 760px) {
  .nav { padding: 16px var(--px); }
  .nav__links { display: none; }
  .hero__kicker, .hero__rating, .form__kicker { top: 70px; }
  .hero__rating { display: none; }
  .hero__scroll { display: none; }
  .anchor--hero { left: 50%; top: 38%; height: 44svh; }
  .hero__drag { top: 62%; left: 50%; }
  .hero__title { font-size: 11vw; bottom: auto; top: 67%; max-width: none; }
  .hero__side { left: var(--px); right: var(--px); width: auto; bottom: 22px; gap: 14px; }
  .hero__side p { display: none; }
  .hero__ctas { grid-template-columns: 1fr 1fr; }
  .hero__ctas .btn { justify-content: center; padding: 14px 10px; font-size: 13px; white-space: normal; text-align: center; }

  .anchor--man { left: 50%; top: 27%; height: 34svh; }
  .man { left: var(--px); top: auto; bottom: 36px; transform: none; gap: 20px; }
  .man__text { font-size: 7vw; }
  .man__facts { gap: 16px; }

  .anchor--form { left: 74%; top: 26%; height: 32svh; }
  .panel { top: 44svh; bottom: 56px; align-content: end; width: auto; right: var(--px); gap: 8px; }
  .panel__name { font-size: 22vw; }
  .panel__lead { display: none; }
  .dose { font-size: 12.5px; margin: 0 0 6px; }
  .dose th { padding: 5px 0; }
  .form__dots { bottom: 22px; }

  .anchor--dentro { top: 52%; height: 34svh; }
  .dentro__head { top: 70px; right: var(--px); }
  .callout { padding-right: 34px; }
  .callout::after { width: 26px; }
  .callout--r { padding-left: 34px; }
  .callout b { font-size: 26px; }
  .callouts { inset: auto var(--px) 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
  .callout, .callout--r { position: static; transform: none; text-align: left; padding: 10px 0 0; border-top: 1px solid var(--line); }
  .callout::after { display: none; }
  .dentro__note { display: none; }

  .modo__head { top: 70px; right: var(--px); }
  .price { top: auto; bottom: 20px; left: var(--px); right: var(--px); width: auto; grid-template-columns: 1fr auto; align-items: center; }
  .price__now { font-size: 22px; }
  .price__save, .price__micro { display: none; }
  .price .btn { grid-column: 2; grid-row: 1; }
  .modo__row { bottom: 96px; }
  .modo__col p:last-child { display: none; }
  .anchor--modo { height: 30svh; }

  .ess__head { top: 70px; }
  .ess__grid { top: 24svh; gap: 0; }
  .tier { padding: 34svh 8px 0 !important; border-left: 0; }
  .tier .anchor--ess { top: 17svh; height: 25svh; }
  .tier__desc, .spec, .tier__new { display: none; }
  .tier h3 { font-size: 22px; text-align: center; }
  .ess__cta { flex-direction: column; align-items: flex-start; gap: 12px; }
  .ess__cta p { font-size: 15px; }

  .ficha__meta { grid-column: 1 / -1; position: static; margin-bottom: 24px; }
  .ficha__body { grid-column: 1 / -1; }
  .stats { grid-template-columns: 1fr; }

  .anchor--ring { top: 36%; height: 24svh; }
  .end { top: 36%; }
  .foot { grid-template-columns: 1fr; }
  .foot__logo { grid-row: auto; height: auto; width: 100%; }
  .foot__cols { grid-template-columns: 1fr 1fr; justify-content: start; }
  .foot__legal { justify-self: start; text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  .hero__scroll::after { animation: none; }
}