.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  width: 100%;
  background-color: rgba(250, 253, 251, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.site-header__logo {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 10%, #ffffff 0, #1eb980 40%, #00bcd4 70%, #b388ff 100%);
  box-shadow: var(--shadow-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.site-header__logo-mark {
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50% 40% 60% 45%;
  background: linear-gradient(145deg, #ffd54f, #ffb347);
  position: relative;
}

.site-header__logo-mark::before,
.site-header__logo-mark::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: #ffffff;
}

.site-header__logo-mark::before {
  width: 0.38rem;
  height: 0.38rem;
  top: 0.3rem;
  left: 0.4rem;
}

.site-header__logo-mark::after {
  width: 0.28rem;
  height: 0.28rem;
  bottom: 0.26rem;
  right: 0.32rem;
  box-shadow: -0.32rem -0.18rem 0 0 #ffe082;
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
}

.site-header__brand-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-neutral-900);
}

.site-header__brand-tagline {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-header__nav-item {}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-neutral-700);
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.32rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1eb980, #00bcd4, #ffd54f);
  transform-origin: center; 
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.site-header__nav-link:focus-visible,
.site-header__nav-link:hover {
  background-color: rgba(0, 188, 212, 0.06);
  color: var(--color-neutral-900);
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.site-header__cta-wrapper {
  display: none;
}

.site-header__cta {
  font-size: 0.8rem;
}

.site-header__toggle {
  border: none;
  background: rgba(255, 255, 255, 0.86);
  border-radius: 999px;
  padding: 0.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  z-index: 9999;
}

.site-header__toggle-box {
  width: 1.5rem;
  height: 1.2rem;
  position: relative;
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
}

.site-header__toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1eb980, #00bcd4, #b388ff);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
}

.site-header__toggle:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

.site-header__nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  transform: translateY(-120%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  background: radial-gradient(circle at top left, rgba(30, 185, 128, 0.28) 0, rgba(250, 253, 251, 0.98) 52%), radial-gradient(circle at bottom right, rgba(179, 136, 255, 0.16) 0, rgba(250, 253, 251, 0.98) 55%);
  box-shadow: 0 18px 40px rgba(10, 24, 44, 0.22);
  flex-direction: column;
  align-items: stretch;
  padding: var(--space-6) var(--space-4) var(--space-6);
}

.site-header__nav-list {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  margin-bottom: var(--space-4);
}

.site-header__nav-link {
  width: 100%;
}

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

.site-header__toggle--open .site-header__toggle-line:nth-child(1) {
  transform: translateY(0.5rem) rotate(45deg);
}

.site-header__toggle--open .site-header__toggle-line:nth-child(2) {
  opacity: 0;
  width: 40%;
}

.site-header__toggle--open .site-header__toggle-line:nth-child(3) {
  transform: translateY(-0.5rem) rotate(-45deg);
}

.site-header__cta-wrapper {
  display: flex;
  justify-content: flex-start;
}

.site-header__cta {
  width: 100%;
  justify-content: center;
}

@media (min-width: 768px) {
  .site-header__nav {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    box-shadow: none;
    flex-direction: row;
    align-items: center;
    padding: 0;
  }

  .site-header__nav-list {
    flex-direction: row;
    margin-bottom: 0;
  }

  .site-header__nav-link {
    width: auto;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__cta-wrapper {
    display: block;
  }

  .site-header__cta {
    width: auto;
  }
}

@media (min-width: 1024px) {
  .site-header__brand-name {
    font-size: 1.2rem;
  }

  .site-header__brand-tagline {
    font-size: 0.78rem;
  }

  .site-header__nav-link {
    font-size: 0.95rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header,
  .site-header__nav,
  .site-header__toggle-line {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}