:root {
  --bg: #f2efe6;
  --bg-panel: rgba(255, 255, 255, 0.72);
  --ink: #102325;
  --ink-soft: #355155;
  --brand: #007a68;
  --brand-deep: #005447;
  --accent: #ef8f00;
  --line: rgba(16, 35, 37, 0.16);
  --shadow: 0 24px 70px rgba(0, 46, 37, 0.15);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 20%, rgba(0, 122, 104, 0.2), transparent 38%),
    radial-gradient(circle at 86% 16%, rgba(239, 143, 0, 0.2), transparent 34%),
    linear-gradient(160deg, #f6f4eb 0%, #e9f2ef 50%, #f6f1e9 100%);
  line-height: 1.55;
  min-height: 100vh;
}

.ambient-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(16, 35, 37, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 35, 37, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at center, black 50%, transparent 90%);
  z-index: -1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 1.9rem;
  height: 1.9rem;
  display: inline-grid;
  place-items: center;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  color: #fff;
  font-weight: 700;
}

.brand-text {
  font-family: "IBM Plex Serif", serif;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.main-nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
  background: var(--brand);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font: inherit;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  padding: 0.2rem;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
  font: inherit;
  font-weight: 700;
  font-size: 0.78rem;
  cursor: pointer;
}

.lang-btn.active {
  color: #fff;
  background: linear-gradient(120deg, var(--brand-deep), var(--brand));
}

main {
  width: min(1200px, 95vw);
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.section {
  margin: 2rem 0;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  padding: clamp(1.2rem, 2.5vw, 1.8rem);
  box-shadow: var(--shadow);
}

.hero h1 {
  font-family: "IBM Plex Serif", serif;
  font-size: clamp(2rem, 6vw, 3.8rem);
  line-height: 1.08;
  margin: 0.2rem 0 1rem;
  max-width: 16ch;
}

.lead {
  max-width: 58ch;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.77rem;
  color: var(--brand-deep);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin: 1.4rem 0;
}

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 0.85rem;
  padding: 0.68rem 1rem;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.14);
}

.btn-primary {
  background: linear-gradient(120deg, var(--brand), #009987);
  color: #fff;
}

.btn-secondary {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.88);
}

.metrics {
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.8rem;
}

.metrics li {
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.6);
}

.metrics strong {
  display: block;
  font-size: 1.35rem;
  color: var(--brand-deep);
}

.metrics span {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.section-heading p {
  margin: 0;
  color: var(--ink-soft);
}

.grid {
  display: grid;
  gap: 0.9rem;
}

.cards {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  margin-top: 1rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.8);
}

.card p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.3fr;
  gap: 1rem;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.timeline li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.6rem;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: rgba(255, 255, 255, 0.78);
  font-size: 0.95rem;
}

.timeline span {
  width: 2rem;
  height: 2rem;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  background: #e6f5f2;
  color: var(--brand-deep);
  font-weight: 700;
  flex-shrink: 0;
}

.timeline li > span:last-child {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.showcase {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-top: 1rem;
}

.showcase article {
  border-left: 4px solid var(--accent);
  background: rgba(255, 255, 255, 0.78);
  padding: 0.9rem 1rem;
  border-radius: 0.8rem;
}

.showcase p,
.contact p {
  color: var(--ink-soft);
}

.contact {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.contact a {
  color: var(--brand-deep);
}

.site-footer {
  padding: 1rem;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 500ms ease, transform 500ms ease;
}

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

@media (max-width: 830px) {
  .split {
    grid-template-columns: 1fr;
  }

  .site-header {
    flex-wrap: wrap;
  }

  .lang-toggle {
    order: 3;
    margin-left: auto;
  }

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

  .main-nav {
    position: absolute;
    top: 100%;
    right: 1rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    min-width: 180px;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid var(--line);
    border-radius: 0.85rem;
    padding: 0.75rem;
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: flex;
  }
}