.container,
.l-container {
  width: min(var(--container-max), 100% - var(--container-gutter));
  margin: 0 auto;
}

.section,
.c-section {
  padding: var(--section-block-space) 0;
}

.l-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.l-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.l-split {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 3rem);
}

.l-split > * {
  flex: 1 1 320px;
  min-width: 0;
}

.l-columns {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.l-columns > * {
  flex: 1 1 280px;
  min-width: 0;
}

.l-grid-auto {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.l-grid-auto > * {
  flex: 1 1 260px;
}

.c-card {
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-accent-shadow);
}

.c-card--soft {
  box-shadow: var(--shadow-card);
}

.c-card__body {
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.c-button,
.c-button--ghost,
.header-cta,
.detail-link,
.hero-link,
.story-link,
.partner-link,
.poc-link,
.story-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.3rem;
  border-radius: var(--button-radius);
  font-size: 0.95rem;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.c-button,
.header-cta,
.detail-link,
.partner-link,
.poc-link,
.story-button {
  background: var(--button-primary-bg);
  border: 1px solid var(--button-primary-border);
  color: var(--button-primary-text);
  font-weight: 600;
}

.c-button--ghost,
.hero-link,
.story-link {
  border: 1px solid var(--button-ghost-border);
  color: var(--button-ghost-text);
}

.c-button::after,
.c-button--ghost::after,
.detail-link::after,
.hero-link::after,
.story-link::after,
.partner-link::after,
.poc-link::after,
.story-button::after {
  content: "↗";
  font-size: 0.9rem;
}

.site-header,
.c-header {
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner,
.c-header__bar {
  width: 100%;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled .header-inner,
.site-header.is-scrolled .c-header__bar {
  background: var(--header-bg-scrolled);
  box-shadow: var(--header-shadow);
}

.site-header.is-scrolled .nav a,
.site-header.is-scrolled .header-cta,
.site-header.is-scrolled .menu-toggle,
.site-header.is-scrolled .lang-btn,
.site-header.is-scrolled .lang-link,
.site-header.is-scrolled .c-header__lang-current {
  color: var(--header-link-scrolled);
}

.site-header.is-scrolled .header-cta,
.site-header.is-scrolled .menu-toggle,
.site-header.is-scrolled .lang-switch {
  border-color: var(--header-control-border-scrolled);
}

.site-header.is-scrolled .lang-switch {
  background: var(--header-control-bg-scrolled);
}

.site-header.is-scrolled .lang-btn.is-active {
  background: var(--header-active-bg);
  color: var(--accent);
}

.header-content,
.c-header__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand-logo,
.c-brand__logo {
  width: 120px;
  height: auto;
}

.nav,
.c-nav {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  min-width: 0;
  overflow: visible;
  gap: clamp(0.55rem, 1vw, 1rem);
  font-size: 0.75rem;
}

.nav a,
.c-nav a {
  color: var(--header-link);
  max-width: min(9rem, 11vw);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-actions,
.c-header__actions {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.75rem;
  justify-self: end;
  min-width: max-content;
}

.header-cta {
  max-width: 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.8rem;
  padding: 0.45rem 1rem;
}

.menu-toggle,
.c-header__toggle {
  display: none;
  border: 1px solid var(--button-ghost-border);
  color: var(--button-ghost-text);
  background: transparent;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  cursor: pointer;
}

.lang-switch,
.c-header__lang {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem;
  border: 1px solid var(--button-ghost-border);
  border-radius: var(--radius-pill);
  background: var(--button);
}

.lang-btn,
.lang-link,
.c-header__lang-current,
.c-header__lang-option {
  border: 0;
  background: transparent;
  color: var(--header-link);
  border-radius: var(--radius-pill);
  padding: 0.3rem 0.55rem;
  font-size: 0.78rem;
  cursor: pointer;
}

.c-header__lang-toggle {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
}

.c-header__lang-current {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 3.3rem;
  justify-content: center;
}

.c-header__lang-current::after {
  content: "▾";
  font-size: 0.7rem;
}

.c-header__lang-dropdown {
  position: absolute;
  top: calc(100% + 0.55rem);
  right: 0;
  z-index: 80;
  min-width: 13rem;
  padding: 0.45rem;
  border: 1px solid var(--button-ghost-border);
  border-radius: var(--radius-sm);
  background: var(--header-bg-scrolled);
  box-shadow: var(--header-shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-0.25rem);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
}

.c-header__lang:focus-within .c-header__lang-dropdown,
.c-header__lang-toggle:checked + .c-header__lang-current + .c-header__lang-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.c-header__lang-option {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  color: var(--header-link-scrolled);
  text-align: left;
}

.c-header__lang-option:hover,
.c-header__lang-option.is-active {
  background: var(--header-active-bg);
  color: var(--accent);
}

.c-header__lang-meta {
  flex: 0 0 2.2rem;
  color: var(--accent);
  font-size: 0.74rem;
}

.c-header__lang-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hero,
.c-hero {
  display: flex;
  align-items: center;
  background: var(--hero-background);
  color: var(--color-on-dark);
}

.site-footer,
.c-footer {
  background: var(--footer-bg);
  padding: 3.5rem 0 2rem;
  border-top: 1px solid var(--light-line);
}

.footer-grid,
.c-footer__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-grid > *,
.c-footer__grid > * {
  flex: 1 1 180px;
}

.footer-grid > :first-child,
.c-footer__grid > :first-child {
  flex-basis: 260px;
}

.footer-legal,
.c-footer__legal {
  border-top: 1px solid var(--light-line);
  margin-top: 2rem;
  padding-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

@media (max-width: 1180px) {
  .header-content,
  .c-header__inner {
    grid-template-columns: auto auto minmax(0, max-content);
  }

  .menu-toggle,
  .c-header__toggle {
    display: inline-flex;
    justify-self: end;
  }

  .nav,
  .c-nav {
    display: none;
    grid-column: 1 / -1;
    width: 100%;
    justify-content: flex-start;
    overflow: visible;
    flex-direction: column;
    padding: 1rem 0 0.4rem;
    gap: 0.75rem;
  }

  .nav.is-open,
  .c-nav.is-open {
    display: flex;
  }

  .nav a,
  .c-nav a {
    max-width: none;
    overflow: visible;
    text-overflow: clip;
  }

  .header-actions,
  .c-header__actions {
    justify-content: flex-end;
  }
}

@media (max-width: 760px) {
  .header-cta,
  .c-header__cta {
    display: none;
  }
}

@media (max-width: 640px) {
  .section,
  .c-section {
    padding: var(--section-block-space-sm) 0;
  }

  .header-content,
  .c-header__inner {
    grid-template-columns: auto auto minmax(0, max-content);
    gap: 0.75rem;
  }

  .brand-logo,
  .c-brand__logo {
    width: 96px;
  }
}

/* Dropdown navigation styles */
.nav-dropdown {
  position: relative;
  display: inline-block;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--button-ghost-border);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--header-link);
  font-size: 0.75rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.2s ease;
}

.nav-dropdown-toggle:hover {
  background: var(--header-active-bg);
  color: var(--accent) !important;
  border-color: var(--accent);
}

.site-header.is-scrolled .nav-dropdown-toggle {
  color: var(--header-link-scrolled) !important;
}

.site-header:not(.is-scrolled) .nav-dropdown-toggle {
  color: var(--header-link) !important;
}

.nav-dropdown-arrow {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.nav-dropdown-toggle[aria-expanded="true"] .nav-dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  z-index: 80;
  min-width: 13rem;
  padding: 0.45rem;
  border: 1px solid var(--button-ghost-border);
  border-radius: var(--radius-sm);
  background: var(--header-bg-scrolled);
  box-shadow: var(--header-shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-0.25rem);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
  display: block;
}

.nav-dropdown-menu.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: 0.5rem 0.8rem;
  color: var(--text) !important;
  font-size: 0.75rem;
  text-align: left;
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
}

.nav-dropdown-item:hover {
  background: var(--header-active-bg);
  color: var(--accent);
}

.nav-dropdown-item:focus {
  outline: 1px solid var(--accent);
  outline-offset: -1px;
}

@media (max-width: 1180px) {
  .nav-dropdown {
    display: block;
  }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    border: none;
    box-shadow: none;
    background: transparent;
    padding: 0;
    min-width: auto;
  }

  .nav-dropdown-item {
    padding: 0.4rem 0.8rem;
    color: var(--text) !important;
  }

  .nav-dropdown-toggle {
    display: none;
  }
}