:root {
  --ink: #183942;
  --deep: #0d2931;
  --sand: #f4f0e8;
  --cream: #fbfaf7;
  --gold: #bd8e50;
  --gold-light: #e3c89f;
  --line: rgba(24, 57, 66, .16);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: "DM Sans", sans-serif;
}

a { color: inherit; text-decoration: none; }

img { display: block; max-width: 100%; }

.container {
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

/* Header */
.signature-header {
  position: absolute;
  z-index: 10;
  top: 0;
  right: 0;
  left: 0;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, .28);
}

.signature-nav {
  display: flex;
  align-items: center;
  width: min(1180px, calc(100% - 64px));
  min-height: 70px;
  margin: 0 auto;
}

.brand { display: inline-flex; align-items: center; }

.brand img {
  width: auto;
  height: 37px;
  object-fit: contain;
}

.signature-header .brand img { height: 25px; }

.nav-links {
  display: flex;
  align-items: center;
  height: 70px;
  margin-left: auto;
}

.nav-links a {
  display: flex;
  height: 100%;
  align-items: center;
  padding: 0 20px;
  border-left: 1px solid rgba(255, 255, 255, .24);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.nav-links .nav-contact {
  height: auto;
  margin-left: 15px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, .7);
}

.menu-toggle {
  display: none;
  margin-left: auto;
  color: #fff;
  background: transparent;
  border: 0;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 1px;
  margin: 5px 0;
  background: currentColor;
}

.mobile-menu { display: none; }

/* Hero */
.signature-hero {
  position: relative;
  display: flex;
  min-height: 720px;
  height: 100svh;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: var(--deep);
}

.signature-hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.signature-hero__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(5, 24, 29, .72), rgba(5, 24, 29, .52));
}

.signature-hero__content {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
  padding-top: 70px;
  text-align: center;
}

.signature-logo {
  width: 170px;
  height: 53px;
  margin: 0 auto 40px;
  object-fit: contain;
  object-position: center;
  filter: brightness(0) invert(1);
}

.signature-hero .eyebrow { color: var(--gold-light); }

.signature-hero h1,
.signature-thesis h2,
.signature-quote blockquote,
.signature-case h2,
.signature-decisions h2,
.signature-process h2,
.signature-for h2,
.signature-cta h2 {
  font-family: Montserrat, sans-serif;
  letter-spacing: -.07em;
  line-height: 1.04;
}

.signature-hero h1 {
  max-width: 800px;
  margin: 0 auto;
  font-size: clamp(46px, 5.2vw, 76px);
  font-weight: 500;
}

.signature-hero h1 strong,
.signature-thesis h2 strong,
.signature-case h2 strong,
.signature-decisions h2 strong,
.signature-process h2 strong,
.signature-for h2 strong,
.signature-cta h2 strong {
  font-weight: 700;
}

.signature-hero__content > p:not(.eyebrow) {
  max-width: 545px;
  margin: 24px auto 32px;
  color: rgba(255, 255, 255, .84);
  font-size: 17px;
  line-height: 1.7;
}

.hero-cta,
.signature-cta a {
  display: inline-flex;
  align-items: center;
  gap: 21px;
  min-height: 50px;
  padding: 0 20px;
  color: var(--deep);
  background: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.hero-cta span,
.signature-cta a span { font-size: 20px; }

.hero-scroll {
  position: absolute;
  z-index: 1;
  bottom: 30px;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.hero-scroll span {
  width: 40px;
  height: 1px;
  background: var(--gold-light);
}

/* Thesis / What it is */
.signature-thesis {
  padding: 125px 0;
  text-align: center;
  background: #fff;
}

.signature-thesis .container {
  max-width: 820px;
}

.thesis-grid {
  display: grid;
  gap: 30px;
}

.signature-thesis h2,
.signature-case h2,
.signature-decisions h2,
.signature-process h2,
.signature-for h2,
.signature-cta h2 {
  margin: 0;
  font-size: clamp(37px, 4.2vw, 61px);
  font-weight: 500;
}

.signature-thesis p:not(.eyebrow) {
  max-width: 650px;
  margin: 24px auto 0;
  color: #506870;
  font-size: 17px;
  line-height: 1.75;
}

/* Quote */
.signature-quote {
  padding: 115px 0;
  color: #fff;
  background: var(--deep);
}

.signature-quote blockquote {
  max-width: 930px;
  margin: 0 auto;
  text-align: center;
  font-size: clamp(37px, 4.8vw, 70px);
  font-weight: 500;
}

.signature-quote strong {
  color: var(--gold-light);
  font-weight: 700;
}

/* Case comparison */
.signature-case {
  padding: 125px 0;
  background: var(--sand);
}

.case-heading {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.case-heading h2 { margin-bottom: 55px; }

.case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
}

.case-card {
  min-height: 360px;
  padding: 48px 52px;
  border-bottom: 1px solid var(--line);
}

.case-card + article { border-left: 1px solid var(--line); }

.case-card > span {
  display: block;
  margin-bottom: 62px;
  color: #6c8289;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.case-card h3 {
  max-width: 400px;
  margin: 0 0 20px;
  font-family: Montserrat, sans-serif;
  font-size: clamp(25px, 2.7vw, 38px);
  letter-spacing: -.06em;
  line-height: 1.08;
}

.case-card p {
  max-width: 420px;
  margin: 0;
  color: #526b73;
  line-height: 1.7;
}

.case-card small {
  display: block;
  margin-top: 29px;
  color: var(--gold);
  font-weight: 700;
}

.case-card--signature {
  color: #fff;
  background: var(--ink);
}

.case-card--signature > span { color: var(--gold-light); }

.case-card--signature p { color: rgba(255, 255, 255, .76); }

.case-card--signature small { color: var(--gold-light); }

/* Decisions */
.signature-decisions {
  padding: 125px 0;
  background: #fff;
}

.decisions-heading {
  text-align: center;
}

.decisions-heading h2 { margin-bottom: 60px; }

.decisions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.decisions-grid article {
  padding: 38px 38px 0 0;
}

.decisions-grid article + article {
  padding-left: 38px;
  border-left: 1px solid var(--line);
}

.decisions-grid b {
  display: block;
  margin-bottom: 55px;
  color: var(--gold);
  font-size: 13px;
  letter-spacing: .1em;
}

.decisions-grid h3 {
  margin: 0 0 15px;
  font-family: Montserrat, sans-serif;
  font-size: 25px;
  letter-spacing: -.055em;
}

.decisions-grid p {
  max-width: 305px;
  margin: 0;
  color: #567078;
  line-height: 1.7;
}

/* Process / O trabalho que não se vê */
.signature-process {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 0;
  color: #fff;
  background: var(--deep);
}

.signature-process__image {
  background: linear-gradient(rgba(5, 24, 29, .2), rgba(5, 24, 29, .2)),
              url("https://images.unsplash.com/photo-1523906834658-6e24ef2386f9?auto=format&fit=crop&w=1500&q=85") center/cover;
}

.signature-process__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 720px;
  padding: 105px max(4vw, 36px);
}

.signature-process .eyebrow { color: var(--gold-light); }

.signature-process h2 { margin-bottom: 25px; }

.signature-process__copy > p:not(.eyebrow) {
  max-width: 600px;
  margin: 0;
  color: rgba(255, 255, 255, .78);
  line-height: 1.75;
}

.signature-process ol {
  max-width: 600px;
  margin: 38px 0 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, .25);
  list-style: none;
}

.signature-process li {
  display: flex;
  gap: 18px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .25);
  font-size: 14px;
}

.signature-process li span {
  color: var(--gold-light);
  font-size: 11px;
  font-weight: 700;
}

.signature-process__copy > a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 36px;
  padding-bottom: 5px;
  border-bottom: 1px solid rgba(255, 255, 255, .45);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.signature-process__copy > a:hover {
  border-bottom-color: var(--gold-light);
  color: var(--gold-light);
}

/* For whom */
.signature-for {
  padding: 125px 0;
  background: #fff;
}

.signature-for .eyebrow,
.signature-for h2 {
  text-align: center;
}

.for-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 105px;
  text-align: left;
}

.for-grid > div:last-child {
  max-width: 510px;
  color: #526c75;
  font-size: 17px;
  line-height: 1.75;
}

.for-grid > div:last-child p + p { margin-top: 22px; }

.for-grid ul {
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.for-grid li {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.for-grid li::before {
  margin-right: 11px;
  color: var(--gold);
  content: "—";
}

/* CTA */
.signature-cta {
  padding: 130px 0;
  text-align: center;
  background: var(--sand);
}

.signature-cta h2 {
  max-width: 890px;
  margin: 0 auto 22px;
}

.signature-cta p:not(.eyebrow) {
  max-width: 590px;
  margin: 0 auto 32px;
  color: #526c75;
  line-height: 1.75;
}

.signature-cta a {
  color: #fff;
  background: var(--deep);
}

/* Footer */
.footer {
  padding: 62px 0 24px;
  color: #dce5e2;
  background: #0a2229;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 55px;
}

.footer .brand { margin-bottom: 18px; }

.footer-brand p {
  max-width: 310px;
  margin: 0;
  color: #91a8aa;
  font-size: 14px;
}

.footer h3 {
  margin: 7px 0 16px;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.footer-links { display: grid; gap: 9px; }

.footer-links a,
.footer-contact a {
  color: #b7c7c8;
  font-size: 14px;
}

.footer-contact { display: grid; gap: 8px; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  color: #82999b;
  font-size: 12px;
}

/* Mobile */
@media (max-width: 760px) {
  .container,
  .signature-nav,
  .signature-hero__content {
    width: min(100% - 40px, 1180px);
  }

  .nav-links { display: none; }

  .menu-toggle { display: block; }

  .mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 9;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 100px 32px 32px;
    color: #fff;
    background: var(--deep);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: .28s ease;
  }

  .mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .mobile-menu a {
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .15);
    font-size: 28px;
  }

  .signature-hero { min-height: 680px; }

  .signature-hero__content { padding-top: 110px; }

  .signature-logo {
    width: 145px;
    margin-bottom: 31px;
  }

  .signature-hero h1 { font-size: 43px; }

  .signature-hero__content > p:not(.eyebrow) { font-size: 15px; }

  .signature-thesis,
  .signature-case,
  .signature-decisions,
  .signature-for,
  .signature-cta { padding: 76px 0; }

  .thesis-grid,
  .for-grid,
  .case-grid,
  .decisions-grid,
  .signature-process {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .signature-quote { padding: 77px 0; }

  .case-card {
    min-height: 0;
    padding: 36px 29px;
  }

  .case-card + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .case-card > span,
  .decisions-grid b { margin-bottom: 31px; }

  .decisions-grid article,
  .decisions-grid article + article {
    padding: 29px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    border-left: 0;
  }

  .signature-process__image { min-height: 380px; }

  .signature-process__copy { padding: 72px 20px; }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom { display: block; }

  .footer-bottom span + span {
    display: block;
    margin-top: 8px;
  }
}