:root {
  --color-bg: #05070d;
  --color-surface: rgba(15, 24, 46, 0.6);
  --color-surface-strong: rgba(21, 30, 55, 0.85);
  --color-accent: #4fd1c5;
  --color-highlight: #8b5cf6;
  --color-text: #f5f7ff;
  --color-muted: #a8b3d1;
  --gradient-hero: radial-gradient(circle at 20% 20%, rgba(79, 209, 197, 0.35), transparent 55%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.25), transparent 60%),
    linear-gradient(160deg, rgba(2, 6, 23, 0.95), rgba(10, 17, 35, 0.95));
  --gradient-accent: radial-gradient(circle at top left, rgba(79, 209, 197, 0.12), transparent 60%),
    linear-gradient(160deg, rgba(12, 19, 41, 0.95), rgba(6, 12, 27, 0.95));
  --font-sans: "Inter Tight", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Inter Display", "Inter", "Space Grotesk", system-ui, sans-serif;
  --font-mono: "Space Grotesk", "Inter", system-ui, sans-serif;
  --shadow-soft: 0 20px 50px -30px rgba(0, 0, 0, 0.9);
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.7;
}

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

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

a:hover,
a:focus {
  color: var(--color-accent);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.container {
  width: min(1100px, 90vw);
  margin: 0 auto;
}

.section {
  padding: clamp(4rem, 6vw, 6rem) 0;
  position: relative;
}

.section--accent {
  background: var(--gradient-accent);
}

.section__header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.section__lede {
  color: var(--color-muted);
  max-width: 44rem;
  margin: 0.75rem auto 0;
}

.eyebrow {
  font-family: var(--font-mono);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--color-accent);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  margin: 0.4em 0 0.25em;
  line-height: 1.2;
}

p {
  margin: 0 0 1.2rem;
  color: var(--color-text);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(5, 7, 13, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.06em;
}

.brand img {
  width: 36px;
  height: 36px;
}

.nav-toggle {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 0.6rem;
  display: inline-flex;
  flex-direction: column;
  gap: 0.35rem;
  cursor: pointer;
  color: inherit;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.nav-toggle__line {
  width: 1.4rem;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
}

.nav-links {
  position: fixed;
  inset: 70px 1.5rem auto;
  padding: 1.5rem;
  background: rgba(10, 17, 35, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 1rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transform: translateY(-20px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease, transform 200ms ease, visibility 200ms ease;
}

.nav-links--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  background: var(--gradient-hero);
}

.hero__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero__lede {
  color: var(--color-muted);
  max-width: 32rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero__media {
  border-radius: 1.5rem;
  overflow: hidden;
  background: rgba(6, 12, 27, 0.7);
  box-shadow: var(--shadow-soft);
}

.section.section--accent::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(79, 209, 197, 0.08), transparent);
  pointer-events: none;
}

.feature-grid {
  display: grid;
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.25rem;
  padding: 2rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
}

.feature-card h3 {
  font-size: 1.4rem;
}

.feature-card p {
  color: var(--color-muted);
}

.timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.timeline__item {
  position: relative;
  padding: 1.5rem 1.5rem 1.5rem 2.5rem;
  background: var(--color-surface-strong);
  border-radius: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.timeline__item::before {
  content: "";
  position: absolute;
  top: 1.8rem;
  left: 1.2rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 8px rgba(79, 209, 197, 0.1);
}

.team-grid {
  display: grid;
  gap: 1.5rem;
}

.team-card {
  background: var(--color-surface);
  border-radius: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 2rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
}

.team-card__role {
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.2rem;
  font-size: 0.8rem;
}

.contact__grid {
  display: grid;
  gap: 2rem;
}

.contact__email {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 2rem;
  background: rgba(9, 16, 33, 0.9);
  border-radius: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-soft);
}

.contact-form label {
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(3, 6, 19, 0.6);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--color-accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(79, 209, 197, 0.2);
}

.form-help {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: -0.5rem 0 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.8rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:focus-visible {
  outline: 2px solid var(--color-highlight);
  outline-offset: 3px;
}

.button--primary {
  background: linear-gradient(120deg, var(--color-accent), var(--color-highlight));
  color: #05070d;
  box-shadow: 0 10px 30px -12px rgba(79, 209, 197, 0.8);
}

.button--ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.18);
}

.button:hover,
.button:focus {
  transform: translateY(-2px);
}

.site-footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(5, 7, 13, 0.9);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.footer__legal {
  color: var(--color-muted);
  font-size: 0.75rem;
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.no-js .reveal-on-scroll {
  opacity: 1;
  transform: none;
}

@media (min-width: 640px) {
  .nav-links {
    position: static;
    flex-direction: row;
    inset: auto;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-toggle {
    display: none;
  }

  .nav-links a {
    font-size: 0.75rem;
  }

  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .contact__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .timeline__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal-on-scroll,
  .is-visible {
    opacity: 1 !important;
    transform: none !important;
  }
}