:root {
  --black: #0a0b0d;
  --ink: #15171b;
  --slate: #59616c;
  --line: #dce1e7;
  --soft: #f4f6f8;
  --white: #ffffff;
  --blue: #1557b0;
  --blue-dark: #0f438b;
  --blue-soft: #e8f0fb;
  --container: 1220px;
  --shadow: 0 28px 80px rgba(8, 13, 21, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.02; letter-spacing: -0.045em; }
h1 { font-size: clamp(3.15rem, 6.3vw, 6.9rem); margin-bottom: 1.7rem; }
h2 { font-size: clamp(2.45rem, 4.4vw, 4.9rem); margin-bottom: 1.5rem; }
h3 { font-size: clamp(1.7rem, 2.3vw, 2.55rem); }
em { color: var(--blue); font-style: normal; }
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.section { padding: clamp(6rem, 10vw, 10rem) 0; }
.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: 1000; left: 16px; top: -60px; padding: 10px 16px; background: var(--blue); color: white; text-decoration: none; }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 100; height: 86px; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: block; width: 224px; flex: 0 0 auto; }
.brand img { width: 100%; height: 55px; object-fit: contain; object-position: left center; }
.main-nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 38px); font-size: .82rem; font-weight: 700; letter-spacing: .055em; text-transform: uppercase; }
.main-nav a { text-decoration: none; }
.main-nav a:not(.nav-cta) { position: relative; padding: 14px 0; }
.main-nav a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 8px; height: 2px; background: var(--blue); transition: right .25s ease; }
.main-nav a:hover::after, .main-nav a:focus-visible::after { right: 0; }
.nav-cta { padding: 12px 18px; color: white; background: var(--black); transition: background .2s ease, transform .2s ease; }
.nav-cta:hover { background: var(--blue); transform: translateY(-2px); }
.menu-button { display: none; border: 0; background: transparent; width: 42px; height: 42px; padding: 10px; }
.menu-button span:not(.sr-only) { display: block; width: 22px; height: 2px; margin: 6px auto; background: var(--black); transition: transform .2s ease; }

.hero { position: relative; min-height: calc(100vh - 86px); display: grid; align-items: center; overflow: hidden; color: white; background: var(--black); }
.hero-grid, .final-grid { position: absolute; inset: 0; opacity: .22; background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(90deg, black, transparent 78%); }
.hero-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.12fr .88fr; align-items: center; gap: clamp(42px, 7vw, 100px); padding-block: clamp(5rem, 9vw, 8rem); }
.eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 2rem; color: #bbc5d1; font-size: .78rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow span { width: 34px; height: 2px; background: var(--blue); }
.eyebrow-dark { color: var(--slate); }
.hero h1 { max-width: 780px; }
.hero-lead { max-width: 650px; margin-bottom: 2.2rem; color: #c7cdd5; font-size: clamp(1.05rem, 1.45vw, 1.28rem); line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 3.8rem; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 54px; padding: 14px 20px; border: 1px solid transparent; text-decoration: none; font-size: .84rem; font-weight: 800; letter-spacing: .045em; text-transform: uppercase; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-3px); }
.button-primary { color: white; background: var(--blue); }
.button-primary:hover { background: #1a66cb; }
.button-ghost { color: white; border-color: rgba(255,255,255,.3); }
.button-ghost:hover { border-color: white; background: rgba(255,255,255,.07); }
.hero-signals { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-signals span { padding: 7px 12px; border: 1px solid rgba(255,255,255,.16); color: #c3c9d1; font-family: monospace; font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; }
.hero-visual { position: relative; min-width: 0; }
.hero-visual figure { height: min(64vh, 680px); margin: 0; overflow: hidden; box-shadow: var(--shadow); }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 54% center; filter: grayscale(1) contrast(1.08) brightness(.7); }
.hero-visual::before { content: ""; position: absolute; z-index: 2; inset: -18px 18px 18px -18px; border: 1px solid rgba(21,87,176,.85); pointer-events: none; }
.hero-visual::after { content: "+  +  +"; position: absolute; z-index: 3; right: -18px; top: -37px; color: var(--blue); font-family: monospace; letter-spacing: .65em; }
.scan-line { position: absolute; z-index: 2; left: 0; right: 0; top: 34%; height: 1px; background: linear-gradient(90deg, transparent, var(--blue), transparent); box-shadow: 0 0 18px var(--blue); animation: scan 4.5s ease-in-out infinite; }
@keyframes scan { 0%,100% { transform: translateY(-120px); opacity: .15; } 50% { transform: translateY(250px); opacity: 1; } }
.visual-tag { position: absolute; z-index: 4; display: grid; padding: 12px 15px; color: white; background: rgba(8,10,13,.88); border-left: 3px solid var(--blue); backdrop-filter: blur(8px); }
.visual-tag small { color: #9aa4b1; font-family: monospace; font-size: .62rem; letter-spacing: .12em; }
.visual-tag strong { font-family: monospace; font-size: .78rem; letter-spacing: .08em; }
.visual-tag-top { top: 24px; right: -20px; }
.visual-tag-bottom { bottom: 24px; left: -28px; grid-template-columns: auto 1fr; column-gap: 8px; align-items: center; }
.visual-tag-bottom small, .visual-tag-bottom strong { grid-column: 2; }
.visual-tag-bottom small { grid-row: 1; }.visual-tag-bottom strong { grid-row: 2; }
.live-dot { grid-row: 1 / 3; width: 9px; height: 9px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px rgba(21,87,176,.2); }

.manifesto { border-bottom: 1px solid var(--line); background: white; }
.manifesto-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.manifesto p { min-height: 124px; margin: 0; padding: 34px clamp(20px, 3vw, 44px); border-right: 1px solid var(--line); display: flex; gap: 16px; align-items: flex-start; font-size: clamp(1rem, 1.25vw, 1.13rem); font-weight: 700; line-height: 1.45; }
.manifesto p:first-child { border-left: 1px solid var(--line); }
.manifesto span { color: var(--blue); font-family: monospace; font-size: .72rem; }

.section-heading { max-width: 890px; margin-bottom: 4.5rem; }
.section-heading > p:last-child { max-width: 720px; color: var(--slate); font-size: 1.08rem; }
.intent { background: var(--soft); }
.intent-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #cbd2da; border-left: 1px solid #cbd2da; }
.intent-card { min-height: 330px; padding: clamp(28px, 3.2vw, 48px); border-right: 1px solid #cbd2da; border-bottom: 1px solid #cbd2da; background: rgba(255,255,255,.45); transition: background .25s ease, transform .25s ease; }
.intent-card:hover { position: relative; z-index: 2; background: white; transform: translateY(-8px); box-shadow: var(--shadow); }
.card-number { display: block; margin-bottom: 5rem; color: var(--blue); font-family: monospace; font-size: .78rem; }
.intent-card h3 { margin-bottom: 1rem; }
.intent-card p { margin: 0; color: var(--slate); }

.method { color: white; background: var(--black); }
.method-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(60px, 10vw, 140px); align-items: start; }
.method-intro { position: sticky; top: 132px; }
.method-intro p:not(.eyebrow) { max-width: 490px; color: #b8c0ca; font-size: 1.05rem; }
.text-link { display: inline-flex; gap: 26px; margin-top: 1.5rem; color: white; text-decoration: none; border-bottom: 1px solid var(--blue); font-size: .82rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.method-steps { list-style: none; margin: 0; padding: 0; border-top: 1px solid #343a43; }
.method-steps li { display: grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 46px 0; border-bottom: 1px solid #343a43; }
.step-index { color: var(--blue); font-family: monospace; font-size: .88rem; }
.method-steps h3 { margin-bottom: .9rem; }
.method-steps p { max-width: 540px; margin: 0; color: #aeb6c0; }

.services { background: white; }
.services-heading { margin-bottom: 4rem; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: stretch; }
.service-card { position: relative; display: flex; flex-direction: column; min-width: 0; padding: clamp(27px, 3vw, 42px); border: 1px solid var(--line); background: white; box-shadow: 0 10px 38px rgba(20,32,50,.04); }
.service-card:hover { border-color: #9cb7da; box-shadow: var(--shadow); }
.service-featured { color: white; background: var(--black); border-color: var(--black); margin-top: -18px; }
.recommended { position: absolute; left: 0; right: 0; top: -32px; height: 32px; display: grid; place-items: center; color: white; background: var(--blue); font-size: .69rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.service-code { color: var(--blue); font-family: monospace; font-size: .72rem; letter-spacing: .08em; }
.service-card h3 { min-height: 100px; margin: 1rem 0 1.4rem; }
.price { margin-bottom: 2rem; line-height: 1; }
.price strong { font-size: clamp(2rem, 3vw, 3rem); letter-spacing: -.055em; }
.price span { color: var(--slate); font-family: monospace; font-size: .75rem; }
.service-featured .price span { color: #9fa8b3; }
.service-card ul { flex: 1; list-style: none; margin: 0 0 2.3rem; padding: 0; border-top: 1px solid var(--line); }
.service-featured ul { border-color: #343a43; }
.service-card li { position: relative; padding: 13px 0 13px 20px; border-bottom: 1px solid var(--line); color: var(--slate); font-size: .94rem; }
.service-featured li { color: #c3cad2; border-color: #343a43; }
.service-card li::before { content: "+"; position: absolute; left: 0; color: var(--blue); font-family: monospace; }
.service-link { display: flex; justify-content: space-between; gap: 16px; padding: 13px 0; border-bottom: 2px solid var(--blue); text-decoration: none; font-size: .8rem; font-weight: 800; letter-spacing: .045em; text-transform: uppercase; }
.service-note { margin: 2rem 0 0; color: var(--slate); font-size: .82rem; }

.lab { color: white; background: #111318; }
.lab-layout { display: grid; grid-template-columns: 1.04fr .96fr; gap: clamp(50px, 8vw, 110px); align-items: center; }
.lab-photo { position: relative; width: min(100%, 520px); justify-self: start; }
.lab-photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center; filter: grayscale(.85) contrast(1.06) brightness(.78); }
.lab-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(21,87,176,.22), transparent 55%); pointer-events: none; }
.corner-label { position: absolute; z-index: 2; left: -18px; bottom: -18px; padding: 13px 18px; background: var(--blue); font-family: monospace; font-size: .72rem; letter-spacing: .08em; }
.corner-label span { margin-right: 14px; color: #bdd6f7; }
.lab-copy > p:not(.eyebrow):not(.location) { max-width: 560px; color: #b7c0ca; font-size: 1.06rem; }
.lab-specs { margin: 2.8rem 0; border-top: 1px solid #333942; }
.lab-specs div { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid #333942; }
.lab-specs dt { color: var(--blue); font-family: monospace; }
.lab-specs dd { margin: 0; color: #dde2e8; }
.location { display: inline-block; margin: 0; padding: 9px 13px; border: 1px solid #38414b; color: #aeb8c3; font-size: .78rem; letter-spacing: .055em; text-transform: uppercase; }

.specialist { background: var(--soft); }
.specialist-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(250px, 340px); gap: clamp(50px, 9vw, 130px); align-items: center; }
.credentials { max-width: 720px; color: var(--blue); font-size: .84rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.specialist blockquote { margin: 3rem 0; padding: 1.1rem 0 1.1rem 26px; border-left: 4px solid var(--blue); font-size: clamp(1.45rem, 2.4vw, 2.3rem); font-weight: 700; letter-spacing: -.035em; line-height: 1.25; }
.specialist-copy > p:last-of-type { max-width: 690px; color: var(--slate); font-size: 1.05rem; }
.experience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 3rem; background: #ccd3db; border: 1px solid #ccd3db; }
.experience-grid div { padding: 22px 18px; background: white; }
.experience-grid strong { display: block; color: var(--blue); font-size: 2.4rem; line-height: 1; }
.experience-grid span { display: block; margin-top: 8px; color: var(--slate); font-size: .78rem; line-height: 1.35; }
.portrait { width: 100%; max-width: 340px; margin: 0; border: 1px solid #ccd3db; background: var(--black); justify-self: end; }
.portrait img { width: 100%; aspect-ratio: 1 / 1.08; object-fit: cover; object-position: center top; filter: grayscale(.35) contrast(1.04); }
.portrait figcaption { display: flex; justify-content: space-between; gap: 16px; padding: 14px 16px; color: #c4cbd4; background: var(--black); font-family: monospace; font-size: .68rem; letter-spacing: .08em; }

.faq { color: white; background: var(--black); }
.faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(60px, 10vw, 140px); }
.faq-list { border-top: 1px solid #343a43; }
.faq details { border-bottom: 1px solid #343a43; }
.faq summary { display: grid; grid-template-columns: 60px 1fr auto; gap: 14px; align-items: center; padding: 28px 0; cursor: pointer; list-style: none; font-size: 1.12rem; font-weight: 700; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary span { color: var(--blue); font-family: monospace; font-size: .75rem; }
.faq summary::after { content: "+"; color: var(--blue); font-family: monospace; font-size: 1.6rem; font-weight: 400; transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { max-width: 660px; margin: -4px 0 30px 74px; color: #b5bdc7; }

.final-cta { position: relative; overflow: hidden; padding: clamp(6rem, 12vw, 11rem) 0; color: white; background: var(--blue-dark); }
.final-grid { opacity: .3; mask-image: linear-gradient(90deg, black, transparent); }
.final-cta-inner { position: relative; z-index: 1; }
.final-cta h2 { font-size: clamp(3.5rem, 8vw, 8rem); }
.final-cta h2 em { color: white; -webkit-text-stroke: 1px rgba(255,255,255,.58); }
.final-cta p:not(.eyebrow) { max-width: 640px; margin-bottom: 2rem; color: #d9e8fb; font-size: 1.08rem; }
.final-cta .button-primary { color: var(--black); background: white; }

.site-footer { padding: 58px 0; color: #aab3bd; background: #060709; border-top: 1px solid #292e35; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 42px; }
.footer-grid > div:not(.footer-brand) > span { color: #64707d; font-family: monospace; font-size: .65rem; letter-spacing: .12em; }
.footer-grid p { margin: 11px 0 0; font-size: .82rem; line-height: 1.7; }
.footer-grid a { text-decoration: none; }
.footer-grid a:hover { color: white; }
.footer-brand strong { display: block; color: white; font-size: 1.5rem; letter-spacing: .04em; }
.footer-brand > span { color: var(--blue); font-size: .72rem; letter-spacing: .15em; text-transform: uppercase; }
.mobile-whatsapp { display: none; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .65s ease, transform .65s ease; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 980px) {
  .container { width: min(calc(100% - 36px), var(--container)); }
  .menu-button { display: block; position: relative; z-index: 102; }
  .menu-button[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }
  .main-nav { position: fixed; inset: 86px 0 auto 0; min-height: calc(100vh - 86px); display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 36px 24px; background: white; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 19px 0 !important; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .nav-cta { margin-top: 22px; padding-inline: 18px !important; text-align: center; }
  .hero { min-height: auto; }
  .hero-layout { grid-template-columns: 1fr; padding-bottom: 6rem; }
  .hero-visual { width: min(88%, 650px); margin-left: auto; }
  .hero-visual figure { height: min(64vw, 570px); }
  .method-layout, .lab-layout, .specialist-layout, .faq-layout { grid-template-columns: 1fr; }
  .method-intro { position: static; }
  .services-grid { grid-template-columns: 1fr; gap: 20px; }
  .service-featured { order: -1; margin-top: 32px; }
  .service-card h3 { min-height: auto; }
  .lab-photo { width: min(72%, 520px); }
  .portrait { width: min(55%, 340px); justify-self: start; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  body { font-size: 16px; padding-bottom: 62px; }
  .container { width: min(calc(100% - 30px), var(--container)); }
  .site-header { height: 74px; }
  .brand { width: 183px; }
  .brand img { height: 48px; }
  .main-nav { top: 74px; }
  .hero-layout { padding-top: 4.4rem; gap: 56px; }
  .hero h1 { font-size: clamp(3.1rem, 14.2vw, 5.2rem); }
  .hero h1 br { display: none; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .hero-signals { gap: 6px; }
  .hero-signals span { flex: 1; text-align: center; }
  .hero-visual { width: calc(100% - 12px); }
  .hero-visual figure { height: 110vw; max-height: 590px; }
  .hero-visual::before { inset: -10px 10px 10px -10px; }
  .visual-tag-top { right: -8px; }
  .visual-tag-bottom { left: -10px; }
  .manifesto-grid { grid-template-columns: 1fr; }
  .manifesto p, .manifesto p:first-child { min-height: auto; border-left: 1px solid var(--line); }
  .section { padding: 6.3rem 0; }
  .section-heading { margin-bottom: 3rem; }
  .intent-grid { grid-template-columns: 1fr; }
  .intent-card { min-height: 270px; }
  .card-number { margin-bottom: 3.2rem; }
  .method-steps li { grid-template-columns: 44px 1fr; padding: 34px 0; }
  .service-card { padding: 30px 24px; }
  .lab-photo { width: 100%; }
  .portrait { width: min(78%, 300px); justify-self: center; }
  .corner-label { left: -8px; bottom: -12px; }
  .experience-grid { grid-template-columns: 1fr; }
  .experience-grid div { display: grid; grid-template-columns: 70px 1fr; align-items: center; }
  .experience-grid span { margin: 0; }
  .faq summary { grid-template-columns: 42px 1fr auto; font-size: 1rem; }
  .faq details p { margin-left: 56px; }
  .final-cta h2 { font-size: clamp(3.5rem, 18vw, 5.7rem); }
  .footer-grid { grid-template-columns: 1fr; }
  .mobile-whatsapp { position: fixed; z-index: 99; left: 0; right: 0; bottom: 0; height: 62px; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; color: white; background: var(--blue); text-decoration: none; font-size: .8rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; box-shadow: 0 -8px 30px rgba(0,0,0,.18); }
}