/* LevEmun design system: clean, investor-facing, maritime and technology focused. */
:root {
  --color-brand: #2E8B57;
  --color-brand-dark: #1F6D45;
  --color-brand-soft: #E8F3ED;
  --color-navy: #0D1F2D;
  --color-navy-2: #132B3D;
  --color-ink: #17212B;
  --color-muted: #5E6B76;
  --color-border: #DCE5EA;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F3F6F7;
  --color-bg-alt: #F7F4EF;
  --container-width: 1180px;
  --section-padding: clamp(54px, 6vw, 80px);
  --section-padding-compact: clamp(42px, 5vw, 60px);
  --anchor-offset: 112px;
  --radius: 8px;
  --shadow: 0 18px 50px rgba(13, 31, 45, 0.11);
  --brand: var(--color-brand);
  --brand-dark: var(--color-brand-dark);
  --brand-soft: var(--color-brand-soft);
  --navy: var(--color-navy);
  --navy-2: var(--color-navy-2);
  --ink: var(--color-ink);
  --muted: var(--color-muted);
  --line: var(--color-border);
  --soft: var(--color-bg-soft);
  --white: var(--color-bg);
  --max-width: var(--container-width);
}

/* Base reset and typography. */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--anchor-offset);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

.container {
  width: min(var(--container-width), calc(100% - 48px));
  margin: 0 auto;
}

/* Header and navigation. */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 4px;
  color: var(--navy);
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-logo {
  width: 192px;
  height: auto;
  flex: 0 0 auto;
}

.brand-text {
  display: grid;
  gap: 1px;
}

.brand-name {
  font-size: 1.12rem;
  font-weight: 800;
  line-height: 1.1;
}

.brand-note {
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.2;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
}

.site-nav a {
  padding: 8px 0;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--brand);
}

/* Shared section and type rhythm. */
.section {
  position: relative;
  padding: var(--section-padding) 0;
  border-bottom: 1px solid var(--color-border);
}

main[id],
section {
  scroll-margin-top: var(--anchor-offset);
}

.section__inner {
  position: relative;
}

.section--hero {
  background: var(--color-bg);
}

.section--white {
  background: var(--color-bg);
}

.section--soft {
  background: var(--color-bg-soft);
}

.section--accent {
  background: var(--color-bg-alt);
}

.section--dark {
  color: var(--color-bg);
  background: var(--color-navy);
  border-bottom-color: rgba(255, 255, 255, 0.16);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section-label {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1,
h2,
h3 {
  color: var(--navy);
  line-height: 1.08;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-weight: 850;
}

.hero h1 {
  max-width: 620px;
  font-size: clamp(2.05rem, 3.1vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 3.2vw, 2.7rem);
  font-weight: 820;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
  font-weight: 780;
}

p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 400;
}

.section-heading {
  max-width: 880px;
  margin-bottom: 34px;
}

.section-copy {
  max-width: 720px;
}

.section-copy p + p {
  margin-top: 18px;
}

.section-actions {
  margin-top: 24px;
}

.section-lead {
  color: #46535F;
}

/* Hero: investor-facing positioning with one clear visual panel. */
.hero {
  padding: clamp(64px, 7vw, 82px) 0 clamp(42px, 5vw, 58px);
  background:
    linear-gradient(180deg, #F6F9FA 0%, #FFFFFF 82%),
    var(--white);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  align-items: start;
  gap: 64px;
}

.hero-lead {
  max-width: 690px;
  color: #43515D;
}

.hero-support {
  max-width: 690px;
  margin-top: 18px;
  color: #43515D;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 20px;
  border: 1px solid var(--brand);
  border-radius: 6px;
  font-size: 0.96rem;
  font-weight: 760;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

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

.primary-button:hover,
.primary-button:focus {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
}

.secondary-button {
  color: var(--navy);
  background: var(--white);
  border-color: #BAC8D0;
}

.secondary-button:hover,
.secondary-button:focus {
  color: var(--brand-dark);
  background: var(--brand-soft);
  border-color: var(--brand);
}

.hero-panel {
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 24px 70px rgba(13, 31, 45, 0.14);
}

.hero-panel img {
  width: 100%;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}

.image-caption {
  margin: 0;
  padding: 10px 16px;
  color: var(--muted);
  background: var(--white);
  border-bottom: 1px solid var(--line);
  font-size: 0.78rem;
  line-height: 1.35;
}

.panel-content {
  padding: 26px;
  border-top: 4px solid var(--brand);
}

.panel-content span {
  display: block;
  margin-bottom: 8px;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.panel-content strong {
  display: block;
  margin-bottom: 10px;
  color: var(--navy);
  font-size: 1.2rem;
  line-height: 1.25;
}

/* Overview cards directly below the hero. */
.overview-section {
  padding: var(--section-padding-compact) 0;
  background: var(--white);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.overview-grid article {
  min-height: 176px;
  padding: 28px;
  background: var(--white);
}

.overview-grid span,
.card-label {
  display: block;
  margin-bottom: 16px;
  color: var(--brand);
  font-size: 0.8rem;
  font-weight: 850;
  text-transform: uppercase;
}

.overview-grid h2 {
  margin-bottom: 10px;
  font-size: 1.12rem;
}

/* Prototype and split content layouts. */
.prototype-section {
  background:
    linear-gradient(135deg, #0D1F2D 0%, #102A3D 58%, #0D1F2D 100%);
  border-top: 5px solid var(--brand);
  border-bottom: 5px solid var(--brand);
}

.prototype-section h2,
.prototype-section h3,
.prototype-section p,
.prototype-section .section-lead {
  color: var(--white);
}

.prototype-section p {
  opacity: 0.8;
}

.prototype-section .eyebrow {
  color: #8BD6AA;
}

.project-label {
  display: inline-block;
  margin: 0 0 18px;
  padding: 8px 12px;
  color: #DDF3E7;
  background: rgba(46, 139, 87, 0.22);
  border: 1px solid rgba(139, 214, 170, 0.34);
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 760;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: 64px;
  align-items: start;
}

.feature-stack {
  display: grid;
  gap: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
}

.feature-stack article {
  min-height: 150px;
  padding: 26px;
  background: var(--navy-2);
}

/* Current operations cards. */
.light-section {
  background: var(--soft);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.card {
  min-height: 260px;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(13, 31, 45, 0.05);
}

/* Environmental and technology vision. */
.vision-section {
  background: var(--white);
}

.vision-list {
  display: grid;
  gap: 12px;
}

.vision-list div {
  padding: 22px 24px;
  background: var(--soft);
  border-left: 4px solid var(--brand);
  border-radius: var(--radius);
}

.vision-list strong,
.vision-list span {
  display: block;
}

.vision-list strong {
  margin-bottom: 6px;
  color: var(--navy);
}

.vision-list span {
  color: var(--muted);
}

/* Partnership section with cautious, non-promissory language. */
#partnership {
  background: var(--color-bg-soft);
}

.partner-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: 24px;
}

.partner-card,
.notice-card,
.about-card,
.contact-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.partner-card,
.notice-card,
.about-card {
  padding: 30px;
}

.partner-card ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.partner-card li::marker {
  color: var(--brand);
}

.notice-card {
  background: var(--brand-soft);
  border-color: #C7DFD0;
}

.notice-card p {
  color: #3F4C56;
}

/* About platform section. */
#about {
  background: var(--color-bg-alt);
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.58fr);
  gap: 52px;
  align-items: center;
}

.about-card {
  padding: 30px;
  border-top: 4px solid var(--brand);
}

/* Contact and footer. */
.contact-section {
  background: var(--navy);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: 64px;
  align-items: center;
}

.contact-section h2,
.contact-section p,
.contact-section .eyebrow {
  color: var(--white);
}

.contact-section .eyebrow {
  color: #8BD6AA;
}

.contact-section p {
  max-width: 680px;
  opacity: 0.78;
}

.contact-card {
  display: grid;
  gap: 10px;
  padding: 30px;
  font-style: normal;
}

.contact-card span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 780;
  text-transform: uppercase;
}

.contact-card strong {
  color: var(--navy);
  font-size: 1.22rem;
}

.contact-card a {
  color: var(--brand-dark);
  font-weight: 760;
  text-decoration: none;
}

.contact-card a:hover,
.contact-card a:focus {
  text-decoration: underline;
}

.site-footer {
  padding: 26px 0;
  color: var(--muted);
  background: var(--white);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.site-footer p {
  margin: 0;
  font-size: 0.92rem;
}

/* Responsive layout for tablets and phones. */
@media (max-width: 1020px) {
  :root {
    --anchor-offset: 220px;
    --section-padding: clamp(52px, 7vw, 72px);
    --section-padding-compact: clamp(42px, 6vw, 58px);
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 16px;
    padding: 16px 0;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 10px 18px;
  }

  .hero-grid,
  .split-layout,
  .partner-layout,
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .overview-grid,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: 0;
  }
}

@media (max-width: 700px) {
  :root {
    --anchor-offset: 236px;
    --section-padding: 56px;
    --section-padding-compact: 48px;
  }

  .container {
    width: min(var(--max-width), calc(100% - 34px));
  }

  .hero {
    padding: 52px 0 40px;
  }

  h2 {
    font-size: 2.05rem;
  }

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

  .overview-section {
    padding-bottom: 56px;
  }

  .overview-grid article,
  .feature-stack article,
  .card,
  .partner-card,
  .notice-card,
  .about-card,
  .contact-card {
    padding: 22px;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 430px) {
  h2 {
    font-size: 1.84rem;
  }

  .brand-note {
    display: none;
  }
}