.btn {
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--border-radius-sm);
  display: inline-flex;
  font-weight: 700;
  justify-content: center;
  min-height: 44px;
  padding: 12px 20px;
  text-align: center;
  transition: background-color var(--transition-normal), border-color var(--transition-normal), color var(--transition-normal), transform var(--transition-normal);
}

.btn:hover {
  transform: scale(1.02);
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
}

.btn-secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--color-text-white);
}

.btn-secondary:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-large {
  min-height: 56px;
  padding: 16px 24px;
}

.btn-full {
  width: 100%;
}

.brand-logo {
  color: var(--color-text-white);
  display: inline-flex;
  flex-direction: column;
  font-family: var(--font-accent);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 4px;
  line-height: 1;
  text-transform: uppercase;
}

.brand-logo::after {
  background: var(--color-accent);
  content: "";
  display: block;
  height: 1px;
  margin-top: 6px;
  width: calc(100% - 4px);
}

.section-light .brand-logo {
  color: var(--color-text-dark);
}

.site-header {
  left: 0;
  position: fixed;
  right: 0;
  top: 0;
  z-index: 100;
}

.announcement-bar {
  align-items: center;
  background: var(--color-accent);
  color: var(--color-text-white);
  display: flex;
  height: var(--announcement-height);
  justify-content: center;
  padding: 0 56px 0 var(--space-sm);
  position: relative;
  transition: height var(--transition-normal), opacity var(--transition-normal);
}

.announcement-bar p {
  font-size: 14px;
  font-weight: 600;
  text-align: center;
}

.announcement-close {
  align-items: center;
  background: transparent;
  border: 0;
  color: var(--color-text-white);
  display: flex;
  font-size: 24px;
  height: 32px;
  justify-content: center;
  position: absolute;
  right: var(--space-sm);
  width: 32px;
}

body.announcement-hidden .announcement-bar {
  height: 0;
  opacity: 0;
  overflow: hidden;
}

.navbar {
  background: transparent;
  height: var(--nav-height);
  transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal), border-color var(--transition-normal);
}

.navbar.is-scrolled,
body.menu-open .navbar {
  background: rgba(13, 13, 13, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-dark);
}

.nav-inner {
  align-items: center;
  display: flex;
  gap: var(--space-md);
  height: 100%;
  margin: 0 auto;
  max-width: calc(var(--max-width) + 32px);
  padding: 0 var(--space-sm);
}

.nav-links {
  align-items: center;
  display: flex;
  flex: 1;
  gap: 24px;
  justify-content: center;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 600;
  padding: 26px 0 24px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  background: var(--color-accent);
  bottom: 16px;
  content: "";
  height: 2px;
  left: 0;
  position: absolute;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
  width: 100%;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--color-text-white);
}

.nav-links a.is-active::after {
  transform: scaleX(1);
}

.nav-cta {
  white-space: nowrap;
}

.menu-toggle {
  background: transparent;
  border: 0;
  display: none;
  height: 44px;
  margin-left: auto;
  position: relative;
  width: 44px;
}

.menu-toggle span {
  background: var(--color-text-white);
  display: block;
  height: 2px;
  left: 10px;
  position: absolute;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  width: 24px;
}

.menu-toggle span:nth-child(1) { top: 13px; }
.menu-toggle span:nth-child(2) { top: 21px; }
.menu-toggle span:nth-child(3) { top: 29px; }

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

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

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

.mobile-menu {
  background: rgba(13, 13, 13, 0.98);
  display: grid;
  inset: var(--header-height) 0 0;
  opacity: 0;
  place-items: center;
  pointer-events: none;
  position: fixed;
  transition: opacity var(--transition-normal), inset var(--transition-normal);
}

body.announcement-hidden .mobile-menu {
  inset: var(--nav-height) 0 0;
}

.mobile-menu.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu-links {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-menu-links a {
  color: var(--color-text-white);
  font-size: 28px;
  font-weight: 600;
}

.image-placeholder {
  align-items: center;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #242424, #151515);
  border: 1px dashed #555;
  color: var(--color-text-light-gray);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 280px;
  padding: var(--space-lg);
  text-align: center;
}

.section-light .image-placeholder {
  background: linear-gradient(135deg, #d8d3cc, #ebe7e0);
  border-color: #bab3aa;
  color: var(--color-text-gray);
}

.image-placeholder span {
  color: var(--color-accent);
  font-family: var(--font-accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
}

.image-placeholder p {
  max-width: 340px;
}

.card-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(4, 1fr);
}

.feature-icon {
  align-items: center;
  background: var(--color-bg-gray);
  border-radius: 50%;
  color: var(--color-accent);
  display: flex;
  height: 56px;
  justify-content: center;
  margin-bottom: var(--space-md);
  width: 56px;
}

.feature-icon svg {
  fill: currentColor;
  height: 30px;
  width: 30px;
}

.check-list {
  display: grid;
  gap: 13px;
  margin: var(--space-lg) 0;
}

.check-list li {
  color: var(--color-text-light-gray);
  padding-left: 30px;
  position: relative;
}

.check-list li::before {
  color: var(--color-accent);
  content: "\2713";
  font-weight: 700;
  left: 0;
  position: absolute;
}