:root {
  --bg: #ECECEA;
  --bg-alt: #E3E3E0;
  --surface: #F6F6F4;
  --ink: #111112;
  --ink-2: #3A3A3C;
  --muted: #6E6E72;
  --line: rgba(17, 17, 18, 0.12);
  --line-strong: rgba(17, 17, 18, 0.24);
  --radius: 14px;
  --font: 'Inter', -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Inter Tight', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body { overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--ink); color: var(--bg); }

.container { width: min(1180px, 100% - 48px); margin-inline: auto; }

/* ---------- Tipografía ---------- */
.eyebrow { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }
.display { font-family: var(--font-display); font-weight: 600; font-size: clamp(2.4rem, 5.4vw, 4.6rem); line-height: 1.02; letter-spacing: -0.035em; }
.title { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.7rem, 2.8vw, 2.5rem); line-height: 1.08; letter-spacing: -0.03em; }
.title--lg { font-size: clamp(2rem, 4vw, 3.4rem); }
.lead { font-size: 1.12rem; color: var(--ink-2); max-width: 34rem; margin-top: 1.4rem; }
.body { color: var(--ink-2); margin-top: 1.1rem; max-width: 30rem; }

/* ---------- Botones ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; height: 46px; padding: 0 1.4rem; border-radius: 999px; font-size: .92rem; font-weight: 500; border: 1px solid transparent; cursor: pointer; transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease); white-space: nowrap; }
.btn--sm { height: 38px; padding: 0 1.1rem; font-size: .85rem; }
.btn--dark { background: var(--ink); color: var(--bg); }
.btn--dark:hover { background: #2B2B2D; }
.btn--ghost { border-color: var(--line-strong); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); }
.btn--block { width: 100%; }

/* ---------- Navegación ---------- */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 50; transition: background .3s var(--ease), border-color .3s var(--ease); border-bottom: 1px solid transparent; }
.nav.is-solid { background: rgba(236, 236, 234, .82); backdrop-filter: saturate(160%) blur(18px); -webkit-backdrop-filter: saturate(160%) blur(18px); border-color: var(--line); }
.nav__inner { width: min(1280px, 100% - 48px); margin-inline: auto; height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--font-display); font-weight: 600; letter-spacing: .14em; font-size: .9rem; }
.brand__mark { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 7px; background: var(--ink); color: var(--bg); font-size: .8rem; letter-spacing: 0; }
.nav__links { display: flex; gap: 2rem; font-size: .88rem; color: var(--ink-2); }
.nav__links a:hover { color: var(--ink); }

/* ---------- Recorrido 3D ---------- */
.tour { position: relative; height: 760vh; }
.tour__sticky { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
.tour__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: pan-y; }
.tour__canvas.is-draggable { cursor: grab; }
.tour__canvas.is-dragging { cursor: grabbing; }

.tour__loader { position: absolute; inset: 0; display: grid; place-items: center; background: var(--bg); z-index: 5; transition: opacity .8s var(--ease); }
.tour__loader span { width: 120px; height: 1px; background: var(--line); position: relative; overflow: hidden; }
.tour__loader span::after { content: ''; position: absolute; inset: 0; background: var(--ink); transform: translateX(-100%); animation: load 1.2s var(--ease) infinite; }
.tour__loader.is-done { opacity: 0; pointer-events: none; }
@keyframes load { to { transform: translateX(100%); } }

.panel { position: absolute; z-index: 3; opacity: 0; visibility: hidden; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease), visibility 0s linear .6s; pointer-events: none; }
.panel.is-active { opacity: 1; visibility: visible; transform: none; transition: opacity .6s var(--ease), transform .6s var(--ease), visibility 0s; pointer-events: auto; }
.panel--hero { left: max(24px, 6vw); top: 50%; translate: 0 -50%; max-width: 40rem; }
.panel--hero.is-active { transform: none; }
.panel--left { left: max(24px, 6vw); top: 50%; translate: 0 -50%; max-width: 27rem; }
.panel--right { right: max(24px, 6vw); top: 50%; translate: 0 -50%; max-width: 27rem; }
.panel--end { left: 50%; bottom: 9vh; translate: -50% 0; text-align: center; width: min(40rem, 100% - 48px); }
.panel--end .panel__actions { justify-content: center; }
.panel__actions { display: flex; gap: .75rem; margin-top: 2rem; flex-wrap: wrap; }
.hint { margin-top: 1.4rem; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

.figures { display: flex; gap: 2.2rem; margin-top: 2rem; padding-top: 1.4rem; border-top: 1px solid var(--line); flex-wrap: wrap; }
.figures dt { font-size: .75rem; color: var(--muted); }
.figures dd { font-family: var(--font-display); font-size: 1.35rem; font-weight: 600; letter-spacing: -0.02em; margin-top: .2rem; }

.ports { list-style: none; margin-top: 1.6rem; border-top: 1px solid var(--line); }
.ports li { padding: .8rem 0; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.ports span { display: inline-block; width: 2.4rem; font-family: var(--font-mono); font-size: .85rem; color: var(--muted); }

/* Anotaciones del despiece */
.callouts { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.callout { position: absolute; left: 0; top: 0; display: flex; align-items: center; gap: .6rem; opacity: 0; transition: opacity .5s var(--ease); font-size: .78rem; color: var(--ink-2); white-space: nowrap; will-change: transform; }
.callout i { width: 56px; height: 1px; background: var(--line-strong); position: relative; }
.callout i::before { content: ''; position: absolute; left: -3px; top: -3px; width: 7px; height: 7px; border-radius: 50%; background: var(--ink); box-shadow: 0 0 0 4px rgba(17,17,18,.08); }
.callout span { background: rgba(246, 246, 244, .85); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border: 1px solid var(--line); padding: .3rem .6rem; border-radius: 6px; }
.callouts.is-visible .callout { opacity: 1; }

/* Barra de progreso del recorrido */
.rail { position: absolute; right: max(24px, 3vw); bottom: 7vh; z-index: 3; display: flex; gap: 1rem; align-items: stretch; transition: opacity .5s var(--ease); }
.rail.is-hidden { opacity: 0; }
.rail__track { width: 1px; background: var(--line); position: relative; }
.rail__fill { position: absolute; left: 0; top: 0; width: 1px; height: 0; background: var(--ink); }
.rail__steps { list-style: none; display: flex; flex-direction: column; gap: .7rem; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.rail__steps li { transition: color .3s var(--ease); }
.rail__steps li.is-current { color: var(--ink); }

.scroll-cue { position: absolute; left: 50%; bottom: 4vh; translate: -50% 0; z-index: 3; display: flex; flex-direction: column; align-items: center; gap: .6rem; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); transition: opacity .4s var(--ease); }
.scroll-cue i { width: 1px; height: 36px; background: linear-gradient(var(--ink), transparent); animation: cue 2s var(--ease) infinite; transform-origin: top; }
.scroll-cue.is-hidden { opacity: 0; }
@keyframes cue { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* ---------- Secciones ---------- */
.section { padding: 9rem 0; }
.section--alt { background: var(--bg-alt); }
.section__head { margin-bottom: 4rem; }

.specs { border-top: 1px solid var(--line-strong); }
.specs__row { display: grid; grid-template-columns: 1fr 2fr; gap: 2rem; padding: 1.6rem 0; border-bottom: 1px solid var(--line); }
.specs__row h3 { font-size: .95rem; font-weight: 600; }
.specs__row ul { list-style: none; color: var(--ink-2); display: grid; gap: .35rem; }

.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 2.2rem; display: flex; flex-direction: column; }
.plan--featured { border-color: var(--ink); }
.plan__name { font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; letter-spacing: -0.02em; }
.plan__desc { color: var(--muted); font-size: .92rem; margin-top: .3rem; }
.plan__price { font-family: var(--font-display); font-size: 2rem; font-weight: 600; letter-spacing: -0.03em; margin: 2rem 0 1.5rem; }
.plan__list { list-style: none; border-top: 1px solid var(--line); margin-bottom: 2rem; flex: 1; }
.plan__list li { padding: .75rem 0; border-bottom: 1px solid var(--line); font-size: .92rem; color: var(--ink-2); }

.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 5rem; align-items: start; }
.contact__data { margin-top: 2.5rem; display: grid; gap: 1.2rem; }
.contact__data dt { font-size: .75rem; color: var(--muted); }
.contact__data dd { margin-top: .15rem; }
.form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 2.2rem; }
.form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem 1.2rem; margin-bottom: 1.6rem; }
.field { display: flex; flex-direction: column; gap: .45rem; font-size: .8rem; color: var(--muted); }
.field--full { grid-column: 1 / -1; }
.field input, .field select, .field textarea { background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: .75rem .85rem; font-size: .95rem; color: var(--ink); outline: none; transition: border-color .2s var(--ease), box-shadow .2s var(--ease); resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--ink); box-shadow: 0 0 0 3px rgba(17,17,18,.08); }
.field.is-invalid input { border-color: #9B2C2C; }
.form__status { margin-top: 1rem; font-size: .9rem; color: var(--ink-2); min-height: 1.4em; }

.footer { border-top: 1px solid var(--line); padding: 3rem 0; }
.footer__inner { display: grid; grid-template-columns: auto 1fr; gap: 1.5rem 3rem; align-items: center; }
.footer__brand { display: flex; align-items: center; gap: .6rem; font-weight: 600; }
.footer__links { display: flex; gap: 1.8rem; justify-content: flex-end; font-size: .88rem; color: var(--ink-2); }
.footer__links a:hover { color: var(--ink); }
.footer__legal { grid-column: 1 / -1; font-size: .8rem; color: var(--muted); }
.footer__legal a { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav__links { display: none; }
  .plans { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; gap: 3rem; }
  .rail { display: none; }
}

@media (max-width: 720px) {
  .panel--hero, .panel--left, .panel--right { left: 20px; right: 20px; top: auto; bottom: 5vh; translate: none; max-width: none; padding: 1.4rem; background: rgba(236, 236, 234, .86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid var(--line); border-radius: var(--radius); }
  .panel--hero { top: 86px; bottom: auto; background: none; border: 0; backdrop-filter: none; -webkit-backdrop-filter: none; padding: 0; }
  .display { font-size: 2.2rem; }
  .lead { font-size: 1rem; }
  .figures { gap: 1.4rem; margin-top: 1.2rem; padding-top: 1rem; }
  .figures dd { font-size: 1.1rem; }
  .body { margin-top: .7rem; font-size: .95rem; }
  .callout span { font-size: .7rem; }
  .callout i { width: 28px; }
  .section { padding: 6rem 0; }
  .specs__row { grid-template-columns: 1fr; gap: .6rem; }
  .form { padding: 1.4rem; }
  .form__grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__links { justify-content: flex-start; flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scroll-cue i, .tour__loader span::after { animation: none; }
}