*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 1rem); }
body { margin: 0; color: var(--color-ink); background: var(--color-paper); font-family: var(--font-sans); font-size: var(--step-0); line-height: 1.65; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .2em; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--color-blue-600); outline-offset: 4px; box-shadow: 0 0 0 2px var(--color-white); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; left: 1rem; top: 1rem; padding: .75rem 1rem; background: var(--color-white); color: var(--color-navy-900); transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.container { width: min(calc(100% - 2rem), var(--container)); margin-inline: auto; }
.section { padding-block: var(--space-7); }
.eyebrow { margin: 0 0 var(--space-3); color: var(--color-blue-600); font-size: .78rem; font-weight: 800; letter-spacing: .14em; line-height: 1.2; text-transform: uppercase; }
.eyebrow-light { color: var(--color-gold-400); }
h1, h2, h3 { margin-top: 0; font-family: var(--font-display); line-height: 1.12; letter-spacing: -.025em; }
h1 { max-width: 13ch; margin-bottom: var(--space-4); color: var(--color-navy-950); font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); }
p { margin-top: 0; }

.site-header { position: sticky; z-index: 20; top: 0; min-height: var(--header-height); background: rgb(255 253 250 / .94); border-bottom: 1px solid transparent; backdrop-filter: blur(14px); transition: box-shadow .2s var(--ease), border-color .2s var(--ease); }
.site-header.is-scrolled { border-color: var(--color-line); box-shadow: var(--shadow-sm); }
.header-inner { min-height: var(--header-height); display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }
.brand { display: inline-flex; align-items: center; gap: .72rem; text-decoration: none; }
.brand-mark { width: 2.5rem; aspect-ratio: 1; display: grid; place-items: center; background: var(--color-navy-800); border-radius: 36% 64% 58% 42% / 38% 40% 60% 62%; color: var(--color-gold-400); font-family: var(--font-display); font-weight: 800; transform: rotate(-4deg); }
.brand-mark span { transform: rotate(4deg); }
.brand-name { color: var(--color-navy-900); font-family: var(--font-display); font-size: 1.18rem; font-weight: 800; letter-spacing: -.03em; }
.brand-name span { color: var(--color-gold-500); }
.main-nav { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); font-size: var(--step--1); font-weight: 650; }
.main-nav a { text-decoration: none; }
.main-nav a:not(.nav-cta):hover { color: var(--color-blue-600); }
.main-nav .nav-current { color: var(--color-blue-600); font-weight: 800; }
.nav-cta { padding: .7rem 1rem; background: var(--color-navy-800); border-radius: var(--radius-sm); color: var(--color-white); }
.menu-button { display: none; width: 2.8rem; height: 2.8rem; padding: .65rem; background: transparent; border: 1px solid var(--color-line); border-radius: var(--radius-sm); }
.menu-button span[aria-hidden] { display: block; height: 2px; margin: 4px 0; background: var(--color-navy-900); }

.hero { position: relative; overflow: hidden; min-height: calc(100svh - var(--header-height)); display: grid; align-items: center; padding-block: clamp(2.75rem, 6vh, 4.5rem); background: linear-gradient(115deg, var(--color-paper) 0 62%, #eef2f4 62%); }
.hero::before { position: absolute; right: -8rem; top: -12rem; width: 32rem; aspect-ratio: 1; border: 1px solid rgb(201 155 74 / .26); border-radius: 50%; content: ""; }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(25rem, .82fr); align-items: center; gap: clamp(3rem, 6vw, 6rem); transform: translateY(-1.25rem); }
.hero-lead { max-width: 42rem; margin-bottom: var(--space-5); color: var(--color-muted); font-size: var(--step-1); }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-4); }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 3.25rem; padding: .75rem 1.25rem; border: 2px solid transparent; border-radius: var(--radius-sm); font-weight: 750; line-height: 1.2; text-decoration: none; transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease); }
.button:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.button-primary { background: var(--color-navy-800); color: var(--color-white); }
.button-secondary { border-color: var(--color-navy-800); color: var(--color-navy-800); }
.button-gold { background: var(--color-gold-400); color: var(--color-navy-950); }
.text-link, .card-link { color: var(--color-navy-800); font-weight: 750; text-decoration: none; }
.trust-list { display: flex; flex-wrap: wrap; gap: .7rem 1.4rem; margin: var(--space-4) 0 0; padding: var(--space-3) 0 0; border-top: 1px solid var(--color-line); color: var(--color-muted); font-size: var(--step--1); list-style: none; }
.trust-list span { color: var(--color-green-500); font-weight: 900; }
.hero-panel { position: relative; align-self: stretch; min-width: 0; display: flex; flex-direction: column; justify-content: flex-start; padding: clamp(1.75rem, 3vw, 2.65rem); background: var(--color-navy-900); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); color: #dce7f1; }
.hero-panel::after { position: absolute; right: 1.2rem; bottom: 1rem; color: rgb(255 255 255 / .035); content: "MEI"; font-family: var(--font-display); font-size: 6rem; font-weight: 900; line-height: 1; }
.panel-symbol { width: 3rem; aspect-ratio: 1; display: grid; place-items: center; margin-bottom: var(--space-5); background: var(--color-gold-400); border-radius: 50%; color: var(--color-navy-950); font-family: var(--font-display); font-weight: 900; }
.panel-kicker { margin-bottom: .5rem; color: var(--color-gold-400); font-size: .8rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.hero-panel h2 { position: relative; z-index: 1; color: var(--color-white); font-size: var(--step-2); }
.hero-panel p, .hero-panel a { position: relative; z-index: 1; }
.hero-panel h2 + p { margin-bottom: 0; }
.hero-panel a { color: var(--color-gold-400); font-weight: 750; white-space: nowrap; }
.hero-panel > a { margin-top: var(--space-3); margin-bottom: var(--space-5); }
.panel-alert { margin: auto 0 0; padding-top: var(--space-3); border-top: 1px solid rgb(221 182 102 / .5); color: #e7edf3; font-size: var(--step--1); line-height: 1.5; }
.panel-alert strong { color: var(--color-gold-400); }

.journey-section { background: var(--color-canvas); }
#jornada { padding-top: var(--space-6); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: var(--space-5); margin-bottom: var(--space-5); }
.section-heading h2 { max-width: 16ch; margin-bottom: 0; color: var(--color-navy-950); }
.section-heading > p { max-width: 34rem; margin-bottom: .35rem; color: var(--color-muted); }
.journey-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); }
.journey-card { position: relative; overflow: hidden; min-height: 22rem; padding: 4.5rem var(--space-4) var(--space-4); display: flex; flex-direction: column; background: var(--color-white); border: 1px solid var(--color-line); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); text-decoration: none; transition: transform .25s var(--ease), box-shadow .25s var(--ease); }
.journey-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.card-band { position: absolute; inset: 0 0 auto; height: 2.6rem; display: flex; align-items: center; padding-inline: var(--space-4); color: var(--color-white); font-size: .72rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.journey-1 .card-band { background: var(--color-navy-800); }
.journey-2 .card-band { background: var(--color-teal-500); }
.journey-3 .card-band { background: var(--color-green-500); }
.journey-4 .card-band { background: var(--color-violet-500); }
.card-number { color: #a8b3bf; font-family: var(--font-display); font-size: .78rem; font-weight: 800; letter-spacing: .15em; }
.journey-card h3 { margin: var(--space-3) 0; color: var(--color-navy-950); }
.journey-card p { color: var(--color-muted); }
.card-link { margin-top: auto; }

.content-section { background: var(--color-paper); }
.content-grid { display: grid; grid-template-columns: .8fr 1.4fr; gap: clamp(3rem, 8vw, 7rem); }
.content-intro h2 { color: var(--color-navy-950); }
.word-highlight { position: relative; display: inline-block; color: var(--color-navy-950); font-style: normal; isolation: isolate; }
.word-highlight::after { position: absolute; z-index: -1; right: -.08em; bottom: .08em; left: -.08em; height: .22em; background: var(--color-gold-400); border-radius: 1em; content: ""; opacity: .7; }
.content-intro > p:not(.eyebrow) { color: var(--color-muted); }
.free-resource-link { margin-top: 1.25rem; }
.free-resource-link p { margin: .25rem 0; color: var(--color-muted); }
.free-resource-link a { color: var(--color-navy-800); font-weight: 650; }
.article-list { border-top: 1px solid var(--color-line); }
.article-card { padding-block: var(--space-4); border-bottom: 1px solid var(--color-line); }
.article-meta { margin-bottom: .7rem; color: var(--color-muted); font-size: .78rem; font-weight: 700; text-transform: uppercase; }
.article-meta span { color: var(--color-blue-600); }
.article-meta .reading-label { color: inherit; text-transform: none; }
.article-card h3 { margin-bottom: .65rem; }
.article-card h3 a { text-decoration: none; }
.article-card h3 a:hover { color: var(--color-blue-600); }
.article-card p:last-child { margin-bottom: 0; color: var(--color-muted); }

.collection-section { overflow: hidden; min-height: calc(100svh - var(--header-height)); display: grid; align-items: center; padding-block: clamp(2.25rem, 4.5vh, 4rem); background: var(--color-navy-950); color: #dbe5ef; }
.collection-grid { display: grid; grid-template-columns: .75fr 1fr; align-items: center; gap: clamp(3rem, 9vw, 8rem); }
.book-stage { position: relative; min-height: min(30rem, 62vh); display: grid; place-items: center; }
.book-stage img { position: relative; z-index: 2; width: min(18rem, 72%); border-radius: .25rem .75rem .75rem .25rem; box-shadow: 22px 28px 50px rgb(0 0 0 / .45); transform: perspective(60rem) rotateY(8deg) rotateZ(-2deg); }
.book-collection { isolation: isolate; }
.book-collection .book-volume { position: absolute; width: min(12.6rem, 48%); transform-origin: 50% 100%; transition: transform .25s var(--ease); }
.book-collection .book-volume-1 { z-index: 6; transform: translate(-4%, 2%) rotate(-2deg); }
.book-collection .book-volume-2 { z-index: 5; transform: translate(-48%, 1%) rotate(-10deg); }
.book-collection .book-volume-3 { z-index: 4; transform: translate(39%, 1%) rotate(8deg); }
.book-collection .book-volume-4 { z-index: 3; transform: translate(-78%, 8%) rotate(-17deg); }
.book-collection .book-volume-5 { z-index: 2; transform: translate(68%, 8%) rotate(15deg); }
.book-glow { position: absolute; width: 28rem; aspect-ratio: 1; background: radial-gradient(circle, rgb(201 155 74 / .25), transparent 66%); }
.collection-copy h2 { max-width: 15ch; color: var(--color-white); }
.collection-copy > p:not(.eyebrow) { max-width: 42rem; }
.collection-copy ul { margin: var(--space-4) 0; padding: 0; list-style: none; }
.collection-copy li { margin-block: .6rem; }
.collection-copy li::before { margin-right: .75rem; color: var(--color-gold-400); content: "◆"; font-size: .65rem; }

.method-section { min-height: calc(100svh - var(--header-height)); display: grid; align-items: center; padding-block: clamp(3rem, 7vh, 4.5rem); background: var(--color-paper); }
.method-grid { display: grid; grid-template-columns: .65fr 1.35fr; column-gap: clamp(3rem, 8vw, 7rem); row-gap: clamp(3.5rem, 9vh, 5rem); }
.method-grid h2 { max-width: 10ch; color: var(--color-navy-950); }
.method-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.method-steps span { width: 2.25rem; aspect-ratio: 1; display: grid; place-items: center; margin-bottom: var(--space-3); background: var(--color-gold-100); border-radius: 50%; color: var(--color-navy-800); font-weight: 900; }
.method-steps h3 { font-size: 1.05rem; }
.method-steps p { color: var(--color-muted); font-size: var(--step--1); }
.private-notice { grid-column: 2; padding: var(--space-4); background: #eef3f6; border-left: 4px solid var(--color-blue-600); transform: translateY(1.6rem); }
.private-notice p { margin: .35rem 0 0; color: var(--color-muted); }

.site-footer { padding-top: calc(var(--space-6) + 1.25rem); background: var(--color-navy-900); color: #c5d1dd; }
.brand-footer .brand-name { color: var(--color-white); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: var(--space-5); }
.footer-grid h2 { margin-bottom: var(--space-3); color: var(--color-white); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }
.footer-grid a { display: block; margin-block: .5rem; text-decoration: none; }
.footer-grid p { color: #9dabb8; font-size: var(--step--1); }
.footer-grid > :last-child > a { margin-bottom: 0; }
.footer-grid .footer-contact-note { display: flex; align-items: center; width: max-content; gap: .28rem; margin: -.08rem 0 0; color: #9dabb8; font-size: .69rem; line-height: 1.15; white-space: nowrap; }
.footer-contact-note svg { width: .78rem; height: .78rem; flex: 0 0 auto; }
.footer-bottom { display: flex; justify-content: space-between; gap: var(--space-4); margin-top: var(--space-5); padding-block: var(--space-4); border-top: 1px solid rgb(255 255 255 / .12); font-size: .78rem; }
.footer-bottom p { margin: 0; }

@media (max-width: 62rem) {
  .menu-button { display: block; }
  .main-nav { position: absolute; inset: var(--header-height) 1rem auto; display: none; align-items: stretch; padding: var(--space-3); background: var(--color-white); border: 1px solid var(--color-line); border-radius: var(--radius-md); box-shadow: var(--shadow-md); }
  .main-nav.is-open { display: grid; }
  .main-nav a, .main-nav .nav-current { padding: .65rem; }
  .hero { background: linear-gradient(150deg, var(--color-paper) 0 66%, #eef2f4 66%); }
  .hero-grid, .collection-grid { grid-template-columns: 1fr; }
  .hero-grid { transform: none; }
  .hero { min-height: auto; }
  .hero-panel { max-width: 40rem; }
  .hero-panel a { white-space: normal; }
  .journey-grid { grid-template-columns: repeat(2, 1fr); }
  .content-grid, .method-grid { grid-template-columns: 1fr; }
  .method-grid { row-gap: var(--space-5); }
  .private-notice { grid-column: 1; }
  .private-notice { transform: none; }
  .book-stage { min-height: 28rem; }
  .collection-section, .method-section { min-height: auto; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-grid > :last-child { grid-column: 2; }
}

@media (max-width: 42rem) {
  :root { --header-height: 4.5rem; }
  .section { padding-block: var(--space-6); }
  .hero { padding-block: var(--space-6); }
  .hero-grid { gap: var(--space-5); }
  .hero-actions, .hero-actions .button { width: 100%; }
  .text-link { padding-block: .5rem; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: var(--space-3); }
  .journey-grid, .method-steps, .footer-grid { grid-template-columns: 1fr; }
  .journey-card { min-height: 18.5rem; }
  .book-stage { min-height: 23rem; }
  .book-collection .book-volume { width: min(10.4rem, 43%); }
  .footer-grid > :last-child { grid-column: 1; }
  .footer-bottom { display: block; }
  .footer-bottom p + p { margin-top: .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}