:root {
  --ink: #0c1118;
  --panel: #ffffff;
  --muted: #51606e;
  --line: #d6e2ea;
  --blue: #2077b9;
  --blue-soft: #dff1fb;
  --cyan: #57b7d9;
  --green: #2b7f67;
  --gold: #d0a93b;
  --surface: #f5f9fb;
  --shadow: 0 18px 44px rgba(12, 17, 24, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 12px 6vw;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  width: 176px;
  height: 52px;
  overflow: hidden;
}

.brand-link img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: left center;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  min-width: 92px;
  padding: 10px 14px;
  border-radius: 8px;
  color: #243240;
  font-size: 0.96rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--blue);
  background: var(--blue-soft);
  outline: none;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: calc(100vh - 170px);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 96px 6vw 80px;
  background: #f7fbfd;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image: url("assets/IDTlogo.png");
  background-position: 84% center;
  background-repeat: no-repeat;
  background-size: min(860px, 64vw);
  opacity: 0.18;
}

.hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(247, 251, 253, 1) 0%, rgba(247, 251, 253, 0.93) 44%, rgba(247, 251, 253, 0.52) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero h1,
.section h2 {
  max-width: 950px;
  margin: 0;
  color: var(--ink);
  font-weight: 800;
  line-height: 1.05;
}

.hero h1 {
  font-size: 4.8rem;
}

.hero-copy {
  max-width: 680px;
  margin: 24px 0 0;
  color: #2a3b4a;
  font-size: 1.28rem;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  color: #ffffff;
  background: var(--blue);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: #145f98;
}

.button.secondary {
  color: var(--ink);
  background: #ffffff;
  border-color: var(--line);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  color: var(--blue);
  border-color: var(--blue);
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.intro-strip div {
  min-height: 126px;
  padding: 26px 6vw;
  background: #ffffff;
}

.intro-strip strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 1.05rem;
}

.intro-strip span {
  display: block;
  color: var(--muted);
}

.section {
  padding: 96px 6vw;
}

.section-content {
  max-width: 920px;
}

.section-content.narrow {
  max-width: 820px;
}

.section h2 {
  font-size: 3.1rem;
}

.section p {
  max-width: 880px;
  color: var(--muted);
  font-size: 1.05rem;
}

.about-section {
  background: #ffffff;
}

.focus-grid,
.technology-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 44px;
}

.focus-card,
.technology-card {
  min-height: 248px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.focus-card {
  display: flex;
  flex-direction: column;
}

.card-label {
  color: var(--gold);
  font-size: 0.92rem;
  font-weight: 800;
}

.focus-card h3,
.technology-card h3 {
  margin: 20px 0 10px;
  color: var(--ink);
  font-size: 1.35rem;
  line-height: 1.2;
}

.focus-card p,
.technology-card p {
  margin: 0;
  font-size: 0.98rem;
}

.founders-section {
  margin-top: 86px;
  padding-top: 72px;
  border-top: 1px solid var(--line);
}

.founders-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 36px;
}

.founder-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  align-items: center;
  min-height: 280px;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #ffffff;
  background:
    linear-gradient(135deg, rgba(17, 24, 32, 0.96), rgba(28, 86, 123, 0.9)),
    radial-gradient(circle at 15% 20%, rgba(87, 183, 217, 0.45), transparent 32%);
  box-shadow: var(--shadow);
}

.founder-photo {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  object-position: center;
}

.founder-card > div {
  padding: 28px 28px 28px 0;
}

.founder-card h3 {
  margin: 0 0 14px;
  color: #ffffff;
  font-size: 1.55rem;
  line-height: 1.2;
}

.founder-card p {
  margin: 8px 0 0;
  color: #eaf4f8;
  font-size: 1rem;
}

.technology-section {
  background: #eef6f9;
}

.technology-figure {
  max-width: 980px;
  margin: 42px 0 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.technology-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.technology-card {
  border-top: 5px solid var(--cyan);
}

.technology-card:nth-child(2) {
  border-top-color: var(--green);
}

.technology-card:nth-child(3) {
  border-top-color: var(--gold);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
  gap: 48px;
  align-items: start;
  background: #ffffff;
}

.contact-copy h2 {
  font-size: 3rem;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: #293744;
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #bfd0dc;
  border-radius: 8px;
  padding: 12px 13px;
  color: var(--ink);
  background: #ffffff;
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--blue);
  outline: 3px solid rgba(32, 119, 185, 0.16);
}

.contact-form button {
  width: 100%;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 6vw;
  color: #d8e6ef;
  background: #111820;
}

.site-footer a {
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--cyan);
}

@media (max-width: 920px) {
  .hero h1 {
    font-size: 3.4rem;
  }

  .section h2,
  .contact-copy h2 {
    font-size: 2.35rem;
  }

  .intro-strip,
  .focus-grid,
  .founders-grid,
  .technology-grid,
  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    min-height: 68px;
    padding: 10px 20px;
  }

  .brand-link {
    width: 136px;
    height: 44px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 68px;
    right: 20px;
    left: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #ffffff;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    min-width: 0;
    text-align: left;
  }

  .hero {
    min-height: calc(100vh - 156px);
    padding: 86px 20px 56px;
  }

  .hero::before {
    background-position: center bottom;
    background-size: 680px;
    opacity: 0.12;
  }

  .hero::after {
    background: rgba(247, 251, 253, 0.9);
  }

  .hero h1 {
    font-size: 2.55rem;
  }

  .hero-copy {
    font-size: 1.08rem;
  }

  .button {
    width: 100%;
  }

  .intro-strip div,
  .section {
    padding-right: 20px;
    padding-left: 20px;
  }

  .section {
    padding-top: 68px;
    padding-bottom: 68px;
  }

  .focus-card,
  .technology-card,
  .contact-form {
    padding: 22px;
  }

  .founder-card {
    grid-template-columns: 1fr;
    padding: 0;
  }

  .founder-photo {
    height: 320px;
    min-height: 0;
  }

  .founder-card > div {
    padding: 0 22px 22px;
  }

  .site-footer {
    flex-direction: column;
    padding: 26px 20px;
  }
}