:root {
  /* Colors */
  --navy-900: #1B1C57;
  --navy-800: #22236B;
  --navy-700: #2C2D80;

  --gray-700: #55555B;
  --gray-500: #96969B;
  --gray-400: #B8B8B8;
  --gray-300: #D2D2D2;
  --gray-200: #E5E5E5;
  --gray-50: #F8F8F8;

  --white: #FFFFFF;
  --black: #14141A;

  --color-brand-primary: var(--navy-700);
  --color-brand-primary-hover: var(--navy-900);
  --color-text-primary: var(--black);
  --color-text-secondary: var(--gray-700);
  --color-text-brand: var(--navy-700);
  --color-border: var(--gray-200);

  /* Typography */
  --font-display: 'Archivo', 'Arial Narrow', sans-serif;
  --font-body: 'Manrope', -apple-system, sans-serif;

  /* Radius */
  --radius-md: 4px;
  --radius-lg: 8px;

  /* Shadow */
  --shadow-md: 0 8px 20px rgba(20, 20, 26, 0.10);

  /* Motion */
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --duration-base: 180ms;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
}

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

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
  border-radius: 2px;
}

.eyebrow {
  font: 600 13px/1.25 var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.section-title,
.about__title,
.contact__title {
  font: 600 48px/1.1 var(--font-display);
}

.section-title {
  margin: 12px 0 56px;
  color: var(--color-text-primary);
}

.btn-primary,
.contact__card-action {
  font: 600 14px/1.4 var(--font-body);
  text-decoration: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--color-brand-primary);
  color: var(--white);
  border: none;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background var(--duration-base) var(--ease-standard);
}

.btn-primary:hover {
  background: var(--color-brand-primary-hover);
}

.btn-primary:focus-visible {
  outline-color: var(--color-brand-primary);
}

/* ---------- Header ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px 48px;
  border-bottom: 1px solid var(--color-border);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1120px;
}

.site-header__logo-link {
  display: flex;
  flex-shrink: 0;
}

.site-header__logo {
  height: 32px;
  width: auto;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 90px 48px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(19, 22, 46, 0.72), rgba(19, 22, 46, 0.82));
}

.hero__content {
  position: relative;
  max-width: 720px;
}

.hero__eyebrow {
  color: var(--gray-300);
}

.hero__title {
  font: 600 80px/1.1 var(--font-display);
  letter-spacing: -0.02em;
  margin: 16px 0 20px;
  color: var(--white);
}

.hero__subline {
  font: 400 18px/1.7 var(--font-body);
  color: var(--gray-300);
  margin: 0 auto;
}

/* ---------- Shared section layout ---------- */
.section {
  padding: 96px 48px;
}

.section__inner {
  max-width: 1120px;
  margin: 0 auto;
}

/* ---------- Services ---------- */
.services {
  background: var(--gray-50);
}

.services .eyebrow {
  color: var(--color-text-brand);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: 24px;
}

.timeline__stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
}

.timeline__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gray-50);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.timeline__icon svg {
  width: 26px;
  height: 26px;
  color: var(--color-brand-primary);
}

.timeline__title,
.platform__title,
.contact__card-title {
  font: 600 18px/1.3 var(--font-display);
  margin: 0;
}

.timeline__caption,
.platform__desc,
.contact__card-detail {
  font: 400 14px/1.5 var(--font-body);
}

.timeline__caption {
  color: var(--color-text-secondary);
}

/* ---------- Platform ---------- */
.platform {
  background: var(--navy-900);
  color: var(--white);
}

.platform .eyebrow {
  color: var(--gray-400);
  display: block;
  text-align: right;
}

.platform .section-title {
  text-align: right;
  margin-left: auto;
  max-width: 640px;
  color: var(--white);
  margin-bottom: 40px;
}

.platform__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--navy-700);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.platform__cell {
  background: var(--navy-800);
  padding: 28px;
}

.platform__badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--navy-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.platform__badge svg {
  width: 20px;
  height: 20px;
  color: var(--white);
}

.platform__title {
  margin-bottom: 8px;
  color: var(--white);
}

.platform__desc {
  color: var(--gray-400);
}

/* ---------- About ---------- */
.about {
  background: var(--gray-50);
  min-height: 460px;
  display: flex;
  align-items: center;
}

.about__inner {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 64px;
  flex-wrap: wrap;
}

.about__text {
  flex: 1 1 320px;
  max-width: 560px;
}

.about .eyebrow {
  color: var(--color-text-brand);
}

.about__title {
  margin: 12px 0 20px;
}

.about__body {
  font: 400 16px/1.5 var(--font-body);
  color: var(--color-text-secondary);
  margin: 0;
}

.about__photo {
  flex: 1 1 320px;
  position: relative;
  min-width: 300px;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.about__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Contact ---------- */
.contact {
  background: var(--navy-900);
  color: var(--white);
}

.contact__title {
  margin: 0 auto 48px;
  text-align: center;
  width: fit-content;
  max-width: 100%;
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contact__card {
  background: var(--navy-800);
  border: 1px solid var(--navy-700);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.contact__card svg {
  width: 26px;
  height: 26px;
  color: var(--gray-300);
  display: block;
  margin-bottom: 16px;
}

.contact__card-title {
  margin-bottom: 6px;
}

.contact__card-detail {
  color: var(--gray-400);
  margin-bottom: 18px;
}

.contact__card-action {
  color: var(--white);
  border-bottom: 1px solid var(--gray-500);
  padding-bottom: 2px;
  display: inline-block;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--gray-50);
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
  padding: 32px 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-footer p {
  font: 400 14px/1.5 var(--font-body);
  margin: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero__title {
    font-size: 56px;
  }

  .timeline,
  .platform__grid,
  .contact__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-title,
  .about__title,
  .contact__title {
    font-size: 38px;
  }

  .platform .section-title {
    text-align: left;
    margin-left: 0;
  }

  .platform .eyebrow {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .site-header,
  .hero,
  .section {
    padding-left: 24px;
    padding-right: 24px;
  }

  .site-header {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .site-header__logo {
    height: 24px;
  }

  .hero__title {
    font-size: 42px;
  }

  .timeline,
  .platform__grid,
  .contact__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 380px) {
  .site-header,
  .hero,
  .section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-header__logo {
    height: 20px;
  }

  .site-header .btn-primary {
    padding: 8px 14px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn-primary {
    transition: none;
  }
}