:root {
  --ink: #333333;
  --paper: #f5f5f5;
  --white: #ffffff;
  --petrol: #375e77;
  --signal: #eec170;
  --mint: #dce8ed;
  --line: rgba(55, 94, 119, 0.2);
  --max: 1180px;
  --header: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: 0;
}
a { color: inherit; }
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--petrol); outline-offset: 4px; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  background: var(--white);
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 64px);
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}
.site-header.is-solid { background: rgba(255,255,255,.96); color: var(--ink); border-color: var(--line); }
.scroll-progress { position: absolute; left: 0; bottom: -1px; width: 100%; height: 2px; background: var(--signal); transform: scaleX(0); transform-origin: left; }
.wordmark { display: flex; align-items: center; gap: 14px; text-decoration: none; font-weight: 700; }
.wordmark > span:first-child { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid currentColor; font-size: 15px; }
.wordmark-name { font-size: 16px; }
.main-nav { display: flex; align-items: center; gap: 28px; font-size: 16px; }
.main-nav a { text-decoration: none; }
.nav-cta { padding-bottom: 4px; border-bottom: 2px solid var(--signal); }
.menu-toggle { display: none; min-width: 44px; min-height: 44px; border: 0; color: inherit; background: transparent; }

.hero {
  position: relative;
  min-height: auto;
  overflow: hidden;
  color: var(--ink);
  background: var(--white);
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: calc(var(--header) + clamp(54px, 7vw, 96px)) 0 clamp(72px, 8vw, 112px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr);
  align-items: center;
  gap: clamp(50px, 7vw, 96px);
  text-align: left;
}
.hero-kicker { margin: 0 0 24px; font: 750 15px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; text-transform: uppercase; color: var(--petrol); }
.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(3rem, 5vw, 5rem);
  line-height: .98;
  font-weight: 680;
  color: var(--ink);
}
.hero h1 span { color: var(--petrol); text-decoration: underline; text-decoration-color: var(--signal); text-decoration-thickness: .1em; text-underline-offset: .1em; }
.hero-copy { max-width: 660px; margin: 28px 0 0; font-size: clamp(1.05rem, 1.5vw, 1.22rem); color: #4d555a; }
.hero-actions { display: flex; align-items: center; justify-content: flex-start; gap: 28px; margin-top: 32px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid transparent; text-decoration: none; font-weight: 700; cursor: pointer; }
.button-primary { background: var(--ink); color: var(--white); border-radius: 5px; box-shadow: 0 8px 22px rgba(51,51,51,.16); }
.button-primary:hover { box-shadow: inset 0 -4px 0 var(--signal), 0 12px 28px rgba(51,51,51,.2); transform: translateY(-2px); }
.text-link { display: inline-block; color: inherit; text-underline-offset: 6px; }
.hero-principle { margin: 28px 0 0; max-width: 560px; font-size: 16px; font-weight: 700; color: var(--petrol); }
.hero-principle::before { content: ""; display: inline-block; width: 28px; height: 2px; margin: 0 10px 4px 0; background: var(--signal); }
.hero-visual { position: relative; width: 100%; height: clamp(410px, 42vw, 560px); margin: 0; overflow: hidden; border-radius: 8px; box-shadow: 0 28px 70px rgba(55,94,119,.18); }
.hero-visual::before { content: ""; position: absolute; z-index: 1; inset: 0; border: 1px solid rgba(55,94,119,.18); border-radius: inherit; pointer-events: none; }
.hero-visual img { position: relative; display: block; width: 100%; height: 100%; object-fit: cover; object-position: 58% center; }
.experience-badge { position: absolute; z-index: 2; left: 24px; bottom: 24px; display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: var(--white); color: var(--ink); border: 3px solid var(--signal); border-radius: 6px; font-size: 16px; font-weight: 700; box-shadow: 0 10px 28px rgba(51,51,51,.16); }
.experience-badge strong { font-size: 1.7rem; color: var(--petrol); }
[data-hero-item] { opacity: 0; transform: translateY(24px); animation: enter .7s cubic-bezier(.2,.7,.2,1) forwards; }
[data-hero-item]:nth-child(2) { animation-delay: .08s; }
[data-hero-item]:nth-child(3) { animation-delay: .16s; }
[data-hero-item]:nth-child(4) { animation-delay: .24s; }

.signal-band { position: relative; z-index: 3; display: grid; grid-template-columns: repeat(4, 1fr); width: min(var(--max), calc(100% - 40px)); margin: -38px auto 0; background: var(--white); border: 1px solid var(--line); box-shadow: 0 18px 48px rgba(55,94,119,.1); }
.signal-band p { margin: 0; padding: 22px 24px; font-weight: 700; border-right: 1px solid var(--line); }
.signal-band p:last-child { border-right: 0; }
.signal-band span { display: block; margin-bottom: 7px; font: 750 15px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--petrol); }

.section { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; padding: clamp(88px, 12vw, 160px) 0; display: grid; grid-template-columns: 80px minmax(0, 1.25fr) minmax(280px, .75fr); gap: 42px; border-bottom: 1px solid var(--line); }
.section-index { font-size: 15px; font-weight: 750; color: var(--petrol); }
.service-number { font-size: 15px; font-weight: 750; color: var(--petrol); }
.eyebrow { margin: 0 0 18px; font-size: 15px; text-transform: uppercase; font-weight: 800; color: var(--petrol); }
h2 { margin: 0; font-size: clamp(2.3rem, 5vw, 5rem); line-height: .98; font-weight: 620; }
.section-heading h2, .method-sticky h2 { color: var(--petrol); }
.intro-body { align-self: end; max-width: 470px; }
.intro-body .lead { font-size: 1.3rem; line-height: 1.4; }
.inline-cta { margin-top: 18px; font-weight: 750; color: var(--petrol); }

.expertise { padding: clamp(96px, 12vw, 168px) max(20px, calc((100vw - var(--max)) / 2)); background: #f5f5f5; }
.expertise-head { max-width: 940px; margin: 0 auto 72px; text-align: center; }
.expertise-head h2 { color: var(--petrol); }
.expertise-head > p:last-child { max-width: 760px; margin: 28px auto 0; font-size: 1.15rem; }
.expertise-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid rgba(55,94,119,.28); border-left: 1px solid rgba(55,94,119,.28); }
.expertise-item { padding: clamp(30px, 4vw, 54px); border-right: 1px solid rgba(55,94,119,.28); border-bottom: 1px solid rgba(55,94,119,.28); }
.expertise-number { margin: 0 0 48px; font: 750 15px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--petrol); }
.expertise-item h3 { margin: 0 0 18px; font-size: clamp(1.8rem, 3vw, 3rem); color: var(--petrol); }
.expertise-item p { max-width: 600px; }
.expertise-item a { display: inline-block; margin-top: 16px; font-weight: 750; color: var(--ink); text-underline-offset: 5px; }

.about-person { padding: clamp(90px, 11vw, 150px) max(20px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: .65fr 1.35fr; align-items: center; gap: clamp(54px, 9vw, 120px); background: var(--white); color: var(--ink); border-block: 1px solid var(--line); }
.experience-mark { display: flex; flex-direction: column; align-items: flex-start; }
.experience-mark strong { font-size: clamp(7rem, 16vw, 13rem); line-height: .72; color: var(--petrol); }
.experience-mark span { margin-top: 24px; font-size: 1.25rem; font-weight: 750; }
.about-copy h2 { color: var(--ink); font-size: clamp(2.5rem, 4.7vw, 4.8rem); }
.about-lead { margin-top: 30px; font-size: 1.3rem; line-height: 1.5; }
.button-secondary { margin-top: 24px; background: var(--ink); color: var(--white); border-radius: 5px; }
.button-secondary:hover { box-shadow: inset 0 -4px 0 var(--signal); transform: translateY(-2px); }

.situations { width: 100%; padding: clamp(90px, 11vw, 150px) max(20px, calc((100vw - var(--max)) / 2)); grid-template-areas: "index heading heading" "index list list"; background: #f5f5f5; color: var(--ink); border-bottom: 0; }
.situations .section-index { grid-area: index; }
.situations .section-heading { grid-area: heading; max-width: 900px; }
.situations .section-heading h2 { color: var(--petrol); }
.situations .eyebrow, .situations .section-index { color: var(--petrol); }
.situation-list { grid-area: list; list-style: none; margin: 42px 0 0; padding: 0; border-top: 1px solid var(--line); }
.situation-list li { display: grid; grid-template-columns: 72px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); font-size: clamp(1.1rem, 2vw, 1.6rem); }
.situation-list span { color: var(--petrol); font-size: 15px; }

.services { padding: clamp(88px, 12vw, 160px) max(20px, calc((100vw - var(--max)) / 2)); background: var(--white); color: var(--ink); }
.services-head { position: relative; max-width: 960px; margin-bottom: 72px; }
.services-head::after { content: "SISTEMA / 05"; position: absolute; right: 0; top: 0; font: 700 15px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--petrol); }
.services h2 { color: var(--petrol); }
.services .eyebrow, .contact .eyebrow { color: var(--petrol); }
.services-note { max-width: 420px; margin: 28px 0 0 auto; color: #4d555a; }
.service-list { border-top: 1px solid var(--line); }
.service-row { display: grid; grid-template-columns: 60px minmax(240px, 1fr) minmax(260px, .8fr) 36px; align-items: center; gap: 22px; min-height: 108px; text-decoration: none; border-bottom: 1px solid var(--line); transition: padding .2s ease, background-color .2s ease, box-shadow .2s ease; }
.service-row:hover, .service-row:focus-visible { padding-left: 18px; background: #f5f5f5; box-shadow: inset 4px 0 0 var(--signal); }
.service-name { font-size: clamp(1.5rem, 3vw, 2.7rem); line-height: 1; }
.service-detail { color: #4d555a; }
.service-arrow { font-size: 24px; color: var(--petrol); transition: transform .2s ease; }
.service-row:hover .service-arrow { transform: translate(4px, -4px); }

.method { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; padding: clamp(88px, 12vw, 160px) 0; display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(54px, 10vw, 140px); }
.method-sticky { position: sticky; top: 116px; align-self: start; }
.method-sticky h2 { font-size: clamp(2.6rem, 5vw, 5.2rem); }
.method-sticky > p:last-child { max-width: 380px; margin-top: 24px; }
.method-steps { list-style: none; margin: 0; padding: 0; }
.method-steps li { min-height: 220px; padding: 10px 0 48px; border-bottom: 1px solid var(--line); }
.method-steps span { color: var(--petrol); font-size: 15px; }
.method-steps h3 { margin: 28px 0 10px; font-size: clamp(1.8rem, 3vw, 3rem); }
.method-steps p { max-width: 540px; margin: 0; font-size: 1.1rem; }

.agency-band { padding: clamp(80px, 11vw, 140px) max(20px, calc((100vw - var(--max)) / 2)); background: #f5f5f5; display: grid; grid-template-columns: 180px 1fr; gap: 48px; border-top: 4px solid var(--signal); }
.agency-band .eyebrow { color: var(--ink); }
.agency-band h2 { max-width: 950px; font-size: clamp(2.2rem, 4.5vw, 4.8rem); }
.agency-band div p { max-width: 650px; margin: 28px 0 0; }
.agency-band .text-link { grid-column: 2; justify-self: start; margin-top: 14px; }

.faq { padding: clamp(96px, 12vw, 168px) max(20px, calc((100vw - var(--max)) / 2)); background: #f5f5f5; }
.faq-head { max-width: 920px; margin: 0 0 64px auto; }
.faq-head h2 { color: var(--petrol); }
.faq-list { display: grid; gap: 14px; }
.faq details { background: var(--white); border: 1px solid rgba(55,94,119,.16); border-radius: 8px; box-shadow: 0 8px 24px rgba(55,94,119,.07); }
.faq summary { position: relative; padding: 24px 64px 24px 24px; list-style: none; cursor: pointer; font-size: 1.05rem; font-weight: 750; color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 24px; top: 50%; transform: translateY(-50%); font-size: 1.6rem; color: var(--petrol); }
.faq details[open] summary::after { content: "−"; }
.faq details p { max-width: 860px; margin: 0; padding: 0 64px 26px 24px; color: #4d555a; }

.contact { padding: clamp(88px, 12vw, 160px) max(20px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: 1fr .85fr; gap: clamp(60px, 9vw, 120px); background: #f5f5f5; color: var(--ink); border-top: 1px solid var(--line); }
.contact-intro h2 { font-size: clamp(2.8rem, 6vw, 6.2rem); }
.contact-intro h2 { color: var(--petrol); }
.contact-intro > p:last-child { max-width: 430px; margin-top: 28px; color: #4d555a; }
.contact-form { display: grid; gap: 24px; align-self: end; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: grid; gap: 8px; font-size: 16px; }
.contact-form input:not([type="checkbox"]), .contact-form textarea { width: 100%; border: 1px solid #b7c0c5; border-radius: 5px; padding: 14px 16px; background: var(--white); color: var(--ink); outline: none; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--petrol); box-shadow: 0 0 0 3px rgba(55,94,119,.14); }
.consent { grid-template-columns: 20px 1fr; align-items: center; }
.consent input { width: 18px; height: 18px; accent-color: var(--signal); }
.contact-form .button { justify-self: start; }
.contact .button-primary { background: var(--ink); color: var(--white); box-shadow: none; }
.contact .button-primary:hover { box-shadow: inset 0 -4px 0 var(--signal); }
.form-status { min-height: 24px; margin: 0; color: var(--petrol); }

.site-footer { padding: 48px max(20px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 24px; background: var(--white); color: var(--ink); border-top: 4px solid var(--signal); }
.site-footer nav { display: flex; gap: 18px; font-size: 15px; }
.prototype-note { grid-column: 1 / -1; margin: 18px 0 0; padding-top: 18px; border-top: 1px solid rgba(51,51,51,.18); color: #4a4a4a; font-size: 15px; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .65s ease, transform .65s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }

@keyframes enter { to { opacity: 1; transform: none; } }
@keyframes settle { to { transform: scale(1); } }

@media (max-width: 820px) {
  :root { --header: 68px; }
  .site-header { padding: 0 20px; }
  .menu-toggle { display: inline-grid; place-items: center; }
  .main-nav { position: fixed; inset: var(--header) 0 auto; display: none; padding: 28px 20px 36px; background: var(--paper); color: var(--ink); border-bottom: 1px solid var(--ink); }
  .main-nav.is-open { display: grid; gap: 22px; }
  .main-nav a { min-height: 44px; display: flex; align-items: center; font-size: 18px; }
  .hero { min-height: auto; }
  .hero-inner { width: calc(100% - 40px); padding: calc(var(--header) + 54px) 0 74px; grid-template-columns: 1fr; gap: 44px; text-align: center; }
  .hero-kicker { margin-bottom: 20px; }
  .hero h1 { font-size: clamp(2.9rem, 13vw, 4.9rem); }
  .hero-copy { max-width: 95%; margin-top: 24px; }
  .hero-actions { align-items: center; flex-direction: column; gap: 18px; margin-top: 24px; }
  .hero-principle { max-width: 320px; margin-left: auto; margin-right: auto; }
  .hero-visual { height: 360px; margin: 0; width: 100%; left: 0; }
  .signal-band { grid-template-columns: 1fr 1fr; }
  .signal-band p:nth-child(2) { border-right: 0; }
  .signal-band p:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .section { grid-template-columns: 44px 1fr; gap: 20px; }
  .section-heading, .intro-body { grid-column: 2; }
  .situations { grid-template-areas: "index heading" "index list"; }
  .situation-list li { grid-template-columns: 42px 1fr; gap: 12px; }
  .service-row { grid-template-columns: 36px 1fr 30px; gap: 12px; padding: 24px 0; }
  .services-head::after { position: static; display: block; margin-top: 30px; }
  .services-note { margin-left: 0; }
  .service-detail { grid-column: 2; }
  .service-arrow { grid-column: 3; grid-row: 1; }
  .method { grid-template-columns: 1fr; }
  .method-sticky { position: static; }
  .method-steps li { min-height: auto; padding-top: 36px; }
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-head { text-align: left; }
  .expertise-head > p:last-child { margin-left: 0; }
  .about-person, .agency-band, .contact { grid-template-columns: 1fr; }
  .experience-mark strong { font-size: 8.5rem; }
  .agency-band .text-link { grid-column: 1; }
  .faq-head { margin-left: 0; }
  .faq summary { padding: 21px 54px 21px 20px; }
  .faq details p { padding: 0 20px 22px; }
  .field-row { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer nav { flex-wrap: wrap; }
}

@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, [data-hero-item] { opacity: 1; transform: none; }
}