:root {
  --site-header-blue: #1565d8;
  --site-header-blue-dark: #0d4eaa;
  --site-header-blue-light: #eaf2ff;
  --site-header-orange: #ff8a00;
  --site-header-navy: #142137;
  --site-header-text: #526077;
  --site-header-line: #dfe6f0;
  --site-header-height: 92px;
  --site-header-max: 1480px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--site-header-height) + 18px);
}

body {
  margin: 0;
  padding-top: var(--site-header-height);
}

.site-header {
  position: fixed;
  z-index: 10000;
  top: 0;
  right: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid rgba(20, 33, 55, 0.08);
  color: var(--site-header-navy);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 30px rgba(20, 33, 55, 0.045);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  font-family: Montserrat, Arial, sans-serif;
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, #1565d8, #ff8a00, #1f9d8a);
  content: "";
  transform: scaleX(var(--site-scroll, 0));
  transform-origin: 0 50%;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 12px 34px rgba(20, 33, 55, 0.095);
}

.site-header a {
  color: inherit;
}

.site-header__inner {
  position: relative;
  display: flex;
  width: min(calc(100% - 72px), var(--site-header-max));
  min-height: var(--site-header-height);
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.site-header__brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 11px;
  color: var(--site-header-navy) !important;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0;
  text-decoration: none !important;
}

.site-header__mark {
  position: relative;
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  background: var(--site-header-blue);
  box-shadow: 0 10px 22px rgba(21, 101, 216, 0.22);
  font-size: 15px;
  letter-spacing: 0;
}

.site-header__mark::after {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 9px;
  height: 9px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--site-header-orange);
  content: "";
}

.site-header__links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(24px, 2.6vw, 48px);
}

.site-header__link {
  position: relative;
  padding: 36px 0 33px;
  color: var(--site-header-text) !important;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none !important;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.site-header__link::after {
  position: absolute;
  right: 0;
  bottom: 18px;
  left: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--site-header-blue);
  content: "";
  opacity: 0;
  transform: scaleX(0.45);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.site-header__link:hover,
.site-header__link.is-current {
  color: var(--site-header-blue) !important;
}

.site-header__link:hover::after,
.site-header__link.is-current::after {
  opacity: 1;
  transform: scaleX(1);
}

.site-header__toggle,
.site-header__mobile {
  display: none;
}

.site-header__toggle {
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--site-header-line);
  border-radius: 14px;
  background: #fff;
  cursor: pointer;
}

.site-header__toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  border-radius: 999px;
  background: var(--site-header-navy);
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.site-header__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header__mobile {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: min(360px, calc(100vw - 26px));
  overflow: hidden;
  padding: 10px;
  border: 1px solid var(--site-header-line);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 24px 60px rgba(20, 33, 55, 0.17);
}

.site-header__mobile.is-open {
  display: grid;
}

.site-header__mobile-link {
  display: flex;
  min-height: 49px;
  align-items: center;
  padding: 0 14px;
  border-radius: 12px;
  color: var(--site-header-navy) !important;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none !important;
}

.site-header__mobile-link:hover,
.site-header__mobile-link.is-current {
  color: var(--site-header-blue) !important;
  background: var(--site-header-blue-light);
}

@media (max-width: 1040px) {
  .site-header__links {
    display: none;
  }

  .site-header__toggle {
    display: block;
  }
}

@media (max-width: 720px) {
  :root {
    --site-header-height: 76px;
  }

  .site-header__inner {
    width: min(calc(100% - 26px), var(--site-header-max));
  }

  .site-header__brand {
    font-size: 17px;
  }

  .site-header__mark {
    width: 40px;
    height: 40px;
    border-radius: 11px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .site-header *,
  .site-header *::before,
  .site-header *::after {
    transition: none !important;
  }
}