:root {
  --ink-900: #2f302c;
  --ink-700: #3f413c;
  --ink-400: #8f8f8f;
  --accent: #0b5fa6;
  --accent-soft: #8f8f8f;
  --bg: #ffffff;
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(27, 31, 59, 0.12);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;

  --font-display: "Space Grotesk", "Trebuchet MS", sans-serif;
  --font-body: "Manrope", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink-900);
  line-height: 1.6;
}

body.nav-open {
  overflow: hidden;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 1000;
}

.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

.container {
  width: min(1160px, 100% - 2.5rem);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(251, 250, 247, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(27, 31, 59, 0.06);
}

:root {
  --header-offset: 96px;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  gap: var(--space-4);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header-logo-link {
  display: inline-flex;
  align-items: center;
}

.header-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.header-essential {
  width: 120px;
  object-fit: contain;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.hero-out {
  opacity: 1;
  transform: translateY(0);
}

.section {
  scroll-margin-top: var(--header-offset);
}

.scrolled .header-logo {
  opacity: 1;
  transform: translateY(0);
}

.scrolled .header-essential {
  opacity: 1;
  transform: translateY(0);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 1rem;
}

.brand-spacer {
  display: none;
}


.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-weight: 600;
  color: var(--ink-700);
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease;
}

.site-nav a.is-active::after {
  width: 100%;
}

.site-nav a.is-active {
  color: var(--ink-900);
}

.site-nav a:hover::after {
  width: 100%;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 600;
  border: 2px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(27, 31, 59, 0.15);
}

.btn.outline {
  border-color: var(--ink-900);
  color: var(--ink-900);
  background: transparent;
}

.btn.solid {
  background: var(--accent);
  color: var(--white);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  gap: 6px;
  cursor: pointer;
  position: relative;
  z-index: 45;
}

.menu-toggle span {
  width: 26px;
  height: 2px;
  background: var(--ink-900);
  border-radius: 999px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hero {
  position: relative;
  padding: var(--space-9) 0 var(--space-7);
  background: radial-gradient(circle at 20% 15%, rgba(11, 95, 166, 0.12), transparent 45%),
              radial-gradient(circle at 80% 20%, rgba(47, 48, 44, 0.12), transparent 50%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: var(--space-8);
  align-items: center;
}

.hero-copy h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4.5vw, 4rem);
  line-height: 1.05;
  margin-bottom: var(--space-4);
}

.hero-brand-logo {
  width: min(320px, 70vw);
  height: auto;
  margin-bottom: var(--space-2);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 600;
  color: var(--ink-400);
  margin-bottom: var(--space-4);
  font-size: 0.85rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--ink-700);
  max-width: 480px;
}

.hero-visual {
  display: flex;
  justify-content: flex-end;
  overflow: visible;
  margin-right: 0;
  flex-direction: column;
  gap: var(--space-4);
}

.hero-illustration {
  width: min(1200px, 100%);
  max-width: none;
  filter: drop-shadow(0 20px 40px rgba(27, 31, 59, 0.18));
}

.visual-caption {
  max-width: 520px;
  color: var(--ink-700);
  font-weight: 600;
  text-align: right;
}

.caption-accent {
  display: block;
  margin-top: var(--space-2);
  color: var(--accent);
  font-weight: 700;
  text-shadow: 0 0 18px rgba(11, 95, 166, 0.45);
}

.caption-parenthetical {
  display: block;
  margin-top: var(--space-1);
  color: inherit;
  font-weight: 600;
}

.hero-scroll {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-top: var(--space-7);
  color: var(--ink-700);
}

.scroll-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  cursor: pointer;
}

.scroll-left:hover .scroll-icon {
  transform: translateY(2px);
}

.scroll-icon {
  transition: transform 0.2s ease;
}

.scroll-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2px solid var(--ink-900);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.scroll-right {
  max-width: 420px;
  text-align: right;
}

.section {
  padding: var(--space-8) 0;
}

.section.alt {
  background: #f3f3f3;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
  margin-bottom: var(--space-4);
}

.section h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  margin-top: var(--space-3);
  background: #f0702f;
  border-radius: 999px;
}

.patent-note {
  margin-top: var(--space-5);
  color: var(--ink-400);
  font-weight: 600;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
  margin-bottom: var(--space-6);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--space-7);
  align-items: start;
}

.about-content {
  display: grid;
  gap: var(--space-5);
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-7);
  align-items: start;
}

.card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow);
}

.brand-line {
  margin-top: var(--space-4);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--ink-700);
}

.question-text {
  margin-bottom: var(--space-4);
  font-size: 1.05rem;
  color: var(--ink-700);
}

.mission-image {
  margin-top: 0;
  width: min(320px, 100%);
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-5);
}

.tech-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow);
  display: grid;
  gap: var(--space-4);
}

.tech-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.45fr);
  gap: var(--space-7);
  align-items: start;
}

.contact-intro {
  margin-top: var(--space-5);
  font-weight: 600;
  color: var(--ink-700);
}

.contact-brand {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-2);
  align-items: start;
}

.contact-brand img {
  width: 220px;
  height: auto;
  opacity: 0.7;
}

.contact-brand p {
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 0.95rem;
  color: var(--ink-400);
}

.founder-inline {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: 144px minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

.founder-inline img {
  width: 144px;
  height: 144px;
  border-radius: 18px;
  object-fit: cover;
  background: #e6e6e6;
}

.founder-media {
  display: grid;
  gap: var(--space-2);
  justify-items: start;
}

.founder-name {
  font-weight: 700;
  font-size: 1.1rem;
}

.founder-title {
  display: inline-flex;
  align-items: center;
  color: var(--ink-700);
  font-weight: 600;
  margin-left: var(--space-2);
  font-size: 0.95rem;
}

.founder-bio {
  color: var(--ink-700);
  margin-top: var(--space-2);
}

.founder-icons {
  display: inline-flex;
  gap: var(--space-2);
}

.founder-link-icon {
  width: 36px;
  height: 36px;
  border: none;
  margin: 0;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: #0a66c2;
  color: var(--white);
  line-height: 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.founder-link-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.founder-link-icon:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(10, 102, 194, 0.28);
}

.contact-panel {
  display: grid;
  gap: var(--space-2);
  background: #0b5fa6;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  justify-items: center;
  align-content: center;
  text-align: center;
  height: 144px;
  margin-top: var(--space-6);
}

.contact-panel h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.1;
  color: var(--white);
}

.contact-panel p {
  color: rgba(255, 255, 255, 0.86);
}

.contact-note {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.contact-panel .btn.solid {
  background: var(--white);
  color: #0b5fa6;
}

.site-footer {
  padding: var(--space-6) 0 var(--space-7);
  color: var(--ink-400);
}

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

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .hero-grid,
  .about-grid,
  .two-col,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .tech-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-scroll {
    flex-direction: column;
    align-items: flex-start;
  }

  .scroll-right {
    text-align: left;
  }

  .founder-inline {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .founder-inline img {
    width: 210px;
    height: 210px;
  }

  .contact-panel {
    height: 210px;
  }
}

@media (max-width: 640px) {
  .tech-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .nav-bar {
    position: relative;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    background: rgba(251, 250, 247, 0.98);
    border: 1px solid rgba(27, 31, 59, 0.08);
    border-radius: 22px;
    box-shadow: var(--shadow);
    gap: var(--space-5);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: transform 0.35s ease, opacity 0.25s ease;
    font-size: 1.1rem;
    z-index: 40;
  }

  .nav-open .site-nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav a {
    width: 100%;
  }

  .nav-left {
    gap: var(--space-4);
  }

  .nav-cta {
    display: none;
  }

  .nav-open .menu-toggle span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .nav-open .menu-toggle span:nth-child(2) {
    opacity: 0;
  }

  .nav-open .menu-toggle span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

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

  [data-reveal] {
    transition: none;
  }

  .btn {
    transition: none;
  }
}