/* Frontier Consulting — McKinsey-registeret: serif/sans-split, null radius/skygge, navy/indigo/cyan */

:root {
  --ink: #333333;
  --black: #000000;
  --canvas: #ffffff;
  --navy: #051c2c;
  --indigo: #2251ff;
  --cyan: #00a9f4;
  --line: #cccccc;
  --off: #f5f5f3;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: "Public Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 1.5;
}

h1, h2, h3, .serif {
  font-family: "Source Serif 4", Georgia, "Times New Roman", serif;
  font-weight: 300;
  color: var(--black);
  margin: 0;
}

a {
  color: var(--indigo);
  text-decoration: none;
  transition: opacity 0.12s linear;
}
a:hover { opacity: 0.7; }

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

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
header.site-header {
  background: var(--canvas);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
  transform: translateY(0);
  transition: transform 0.3s ease;
}
header.site-header.header-hidden {
  transform: translateY(-100%);
}
.header-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 400;
  font-size: 20px;
  color: var(--black);
  letter-spacing: 0.2px;
  white-space: nowrap;
  transition: opacity 0.12s linear;
}
.logo:hover { opacity: 0.72; }
.logo span { color: var(--indigo); transition: color 0.12s linear; }
.logo:hover span { color: var(--cyan); }
.logo-img { display: block; height: 26px; width: auto; }
nav.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.header-inner { position: relative; }
nav.main-nav a {
  position: relative;
  color: var(--black);
  font-size: 15px;
  font-weight: 400;
  padding-bottom: 3px;
}
nav.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--indigo);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.12s linear;
}
nav.main-nav a:hover { color: var(--indigo); opacity: 1; }
nav.main-nav a:hover::after { transform: scaleX(1); }
nav.main-nav a.current { color: var(--indigo); }
nav.main-nav a.current::after { transform: scaleX(1); }
.btn-cta {
  display: inline-block;
  background: var(--cyan);
  color: var(--black) !important;
  font-size: 15px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 0;
  white-space: nowrap;
  transition: background-color 0.12s linear, transform 0.12s linear;
}
.btn-cta:hover { opacity: 1; background: var(--indigo); color: #fff !important; transform: translateY(-1px); }
.hamburger {
  display: none;
  width: 24px;
  height: 18px;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--black);
  transition: transform 0.2s ease, opacity 0.2s ease;
  transform-origin: center;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 860px) {
  nav.main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 8px 24px 24px;
  }
  nav.main-nav.nav-open { display: flex; }
  nav.main-nav a { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--off); }
  nav.main-nav .btn-cta { margin-top: 12px; text-align: center; width: 100%; }
  .hamburger { display: flex; }
}

/* ---------- Hero (bento navy) ---------- */
.hero {
  background: var(--navy);
  color: #fff;
  padding: 110px 24px 90px;
}
.hero-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 40px;
}
.hero h1 {
  color: #fff;
  font-size: 52px;
  line-height: 1.1;
  max-width: 720px;
}
.hero h1 .accent { color: var(--indigo); }
.hero p.lead {
  color: #d7dee6;
  font-size: 18px;
  max-width: 520px;
  margin-top: 24px;
  font-weight: 300;
}
.hero .arrow-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  flex-shrink: 0;
  transition: background 0.12s linear;
}
.arrow-btn:hover { background: rgba(255,255,255,0.25); opacity: 1; }

@media (max-width: 700px) {
  .hero h1 { font-size: 36px; }
  .hero-inner { grid-template-columns: 1fr; }
}

/* small navy sub-hero for inner pages */
.page-hero {
  background: var(--navy);
  color: #fff;
  padding: 90px 24px 60px;
}
.page-hero .kicker {
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin-bottom: 16px;
}
.page-hero h1 { color: #fff; font-size: 42px; max-width: 760px; }
.page-hero p.lead { color: #d7dee6; font-size: 18px; max-width: 620px; margin-top: 20px; }

/* ---------- Media tile grid ---------- */
.tile-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--line);
}
@media (max-width: 760px) { .tile-grid { grid-template-columns: 1fr; } }

.tile {
  position: relative;
  background: var(--navy) center/cover no-repeat;
  min-height: 340px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: #fff;
  overflow: hidden;
}
.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(5,28,44,0.88) 0%, rgba(5,28,44,0.35) 55%, rgba(5,28,44,0.1) 100%);
}
.tile.light { color: #fff; }
.tile .kicker {
  position: relative;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin-bottom: 12px;
}
.tile h3 { position: relative; color: inherit; font-size: 24px; line-height: 1.25; font-family: "Public Sans", sans-serif; font-weight: 500; margin-bottom: 20px; }
.tile .tile-btn {
  position: relative;
  display: inline-block;
  background: #fff;
  color: var(--black);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 20px;
  align-self: flex-start;
}

/* ---------- Sections ---------- */
section.block {
  padding: 88px 24px;
}
section.block.off { background: var(--off); }
section.block.navy { background: var(--navy); color: #fff; }
section.block.navy h2 { color: #fff; }

.section-kicker {
  font-size: 16px;
  font-weight: 500;
  color: var(--indigo);
  margin-bottom: 16px;
}
.navy .section-kicker { color: var(--cyan); }

h2.statement {
  font-size: 38px;
  line-height: 1.2;
  max-width: 760px;
}
h2.statement .accent { color: var(--indigo); }
.navy h2.statement .accent { color: var(--cyan); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  margin-top: 48px;
}
@media (max-width: 760px) { .two-col { grid-template-columns: 1fr; } }

.card {
  background: var(--canvas);
  padding: 0;
}
.card h3 { font-size: 22px; font-family: "Public Sans", sans-serif; font-weight: 500; margin-bottom: 12px; }
.card p { color: var(--ink); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-top: 48px;
}
@media (max-width: 900px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .feature-grid { grid-template-columns: 1fr; } }

.feature {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.navy .feature { border-top-color: rgba(255,255,255,0.25); }
.feature .num {
  font-family: "Source Serif 4", serif;
  font-size: 32px;
  color: var(--indigo);
  display: block;
  margin-bottom: 12px;
}
.navy .feature .num { color: var(--cyan); }
.feature h3 { font-size: 18px; font-family: "Public Sans", sans-serif; font-weight: 500; margin-bottom: 8px; }

.list-plain {
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
}
.list-plain li {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: baseline;
}
.list-plain li:last-child { border-bottom: 1px solid var(--line); }
.list-plain .label { font-weight: 500; color: var(--black); }
.list-plain .desc { color: var(--ink); max-width: 480px; text-align: right; }
@media (max-width: 600px) {
  .list-plain li { flex-direction: column; gap: 8px; }
  .list-plain .desc { text-align: left; }
}

.cta-band {
  background: var(--navy);
  color: #fff;
  padding: 72px 24px;
  text-align: left;
}
.cta-band-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-band h2 { color: #fff; font-size: 30px; max-width: 560px; }

.btn-outline {
  display: inline-block;
  border: 1px solid #fff;
  color: #fff !important;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
}
.btn-outline:hover { background: #fff; color: var(--navy) !important; opacity: 1; }

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 48px;
}
@media (max-width: 900px) { .article-grid { grid-template-columns: 1fr; } }
.article-card .thumb {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  margin-bottom: 20px;
  background: var(--off);
}
.article-card .eyebrow {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--indigo);
  margin-bottom: 12px;
}
.article-card h3 { font-size: 20px; font-family: "Public Sans", sans-serif; font-weight: 500; margin-bottom: 10px; }
.article-card p { font-size: 15px; color: var(--ink); }

/* ---------- Footer ---------- */
footer.site-footer {
  background: var(--navy);
  color: #d7dee6;
  padding: 64px 24px 32px;
}
.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.2);
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid .logo { color: #fff; margin-bottom: 12px; }
.footer-grid p { font-size: 14px; max-width: 280px; }
.footer-col h4 {
  font-family: "Public Sans", sans-serif;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col a { display: block; color: #d7dee6; font-size: 14px; padding: 5px 0; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  color: #97a3ae;
  flex-wrap: wrap;
  gap: 12px;
}

.chat-bubble {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--cyan);
  color: #051c2c;
  width: auto;
  padding: 14px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: none;
  z-index: 90;
}