:root {
  --ink: #14201f;
  --muted-ink: #5f6967;
  --paper: #f8f8f5;
  --white: #ffffff;
  --line: #dfe3df;
  --teal: #2a7d73;
  --teal-dark: #16594f;
  --blue: #326c9a;
  --amber: #b9843f;
  --charcoal: #0d1414;
  --shadow: 0 24px 70px rgba(13, 20, 20, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 40px;
  border-bottom: 1px solid rgba(223, 227, 223, 0.82);
  background: rgba(248, 248, 245, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  font-weight: 650;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted-ink);
  font-size: 0.9rem;
}

.nav-links a {
  transition: color 160ms ease;
}

.nav-links a:hover {
  color: var(--ink);
}

.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: 74svh;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(8, 14, 14, 0.9), rgba(8, 14, 14, 0.64) 36%, rgba(8, 14, 14, 0.2) 72%, rgba(8, 14, 14, 0.08)),
    url("assets/new-atlantic-hero.jpg") center / cover no-repeat;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(13, 20, 20, 0.46), transparent 46%);
}

.hero-content {
  position: relative;
  width: min(760px, calc(100% - 80px));
  padding: 96px 0 84px;
  margin-left: 40px;
  color: var(--white);
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 760;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero .eyebrow {
  color: #a6ded3;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 5.3rem;
  font-weight: 500;
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  max-width: 820px;
  margin-bottom: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.35rem;
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.02rem;
  line-height: 1.25;
}

.hero-copy {
  max-width: 660px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 0.94rem;
  font-weight: 650;
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: var(--white);
  background: var(--teal);
}

.button.primary:hover {
  background: var(--teal-dark);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.54);
  background: rgba(255, 255, 255, 0.08);
}

.button.dark {
  background: var(--charcoal);
}

.section,
.section-band,
.contact {
  padding: 96px 40px;
}

.section-inner {
  width: min(1160px, 100%);
  margin: 0 auto;
}

.intro {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.85fr);
  gap: 84px;
  align-items: start;
}

.narrative-split {
  grid-template-columns: minmax(280px, 0.75fr) minmax(520px, 1.1fr);
  gap: 64px;
}

.copy-stack p {
  margin-bottom: 26px;
  color: var(--muted-ink);
  font-size: 1.04rem;
}

.check-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 24px;
  color: var(--ink);
}

.check-list li::before {
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  content: "";
}

.context-list,
.lab-list {
  gap: 0;
}

.context-list li,
.lab-list li {
  padding-block: 13px;
  border-top: 1px solid var(--line);
  font-size: 1rem;
  line-height: 1.42;
  text-wrap: balance;
}

.context-list li:first-child,
.lab-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.context-list li::before,
.lab-list li::before {
  top: 1.15em;
}

.context-list li:first-child::before,
.lab-list li:first-child::before {
  top: 0.47em;
}

.keep {
  white-space: nowrap;
}

.muted {
  border-block: 1px solid var(--line);
  background: #eef3f1;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric-row div,
.steps article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.metric-row div {
  min-height: 128px;
  padding: 20px;
}

.metric {
  display: block;
  margin-bottom: 14px;
  color: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.24rem;
  line-height: 1.12;
}

.metric + span {
  display: block;
  color: var(--muted-ink);
  font-size: 0.93rem;
  line-height: 1.35;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 44px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.steps article {
  min-height: 250px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.steps span {
  display: block;
  margin-bottom: 54px;
  color: var(--teal);
  font-size: 0.84rem;
  font-weight: 760;
}

.steps p {
  margin-bottom: 0;
  color: var(--muted-ink);
}

.detail {
  border-top: 1px solid var(--line);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.feature-grid div {
  min-height: 82px;
  padding: 20px;
  border-left: 3px solid var(--teal);
  background: var(--white);
  color: var(--ink);
  font-weight: 620;
}

.contact {
  color: var(--white);
  background: var(--charcoal);
}

.contact .section-kicker {
  color: #a6ded3;
}

.contact h2 {
  max-width: 690px;
}

.contact-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #cbd0cc;
  background: var(--charcoal);
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .site-header {
    min-height: 62px;
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 76svh;
    background-position: 57% center;
  }

  .hero-content {
    width: calc(100% - 40px);
    padding: 84px 0 64px;
    margin-left: 20px;
  }

  h1 {
    font-size: 3.35rem;
  }

  h2 {
    font-size: 1.95rem;
  }

  .hero-copy {
    font-size: 1rem;
    line-height: 1.45;
  }

  .section,
  .section-band,
  .contact {
    padding: 68px 20px;
  }

  .intro-grid,
  .split,
  .steps,
  .feature-grid,
  .metric-row {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .narrative-split {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .metric-row div {
    min-height: auto;
  }

  .steps article {
    min-height: auto;
  }

  .steps span {
    margin-bottom: 28px;
  }

  .contact-inner,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 430px) {
  .brand {
    font-size: 0.94rem;
  }

  h1 {
    font-size: 2.82rem;
  }

  .hero-actions,
  .hero-actions .button,
  .contact .button {
    width: 100%;
  }

  .button {
    padding-inline: 14px;
  }
}