:root {
  --nav-height: 4rem;
  --nav-h: 4rem;
}

html {
  scrollbar-gutter: stable;
}

.site-nav {
  --sn-h: 4rem;
  --sn-bg: rgba(255, 255, 255, .80);
  --sn-border: rgba(16, 24, 40, .08);
  --sn-text: #101828;
  --sn-muted: #5b6575;
  --sn-accent: #1677ff;
  --sn-hover: rgba(22, 119, 255, .07);
  --sn-panel: #ffffff;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--sn-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sn-bg);
  border-bottom: 0.0625rem solid var(--sn-border);
  -webkit-backdrop-filter: blur(1.125rem);
  backdrop-filter: blur(1.125rem);
}

[data-theme="dark"] .site-nav {
  --sn-bg: rgba(11, 14, 20, .76);
  --sn-border: rgba(255, 255, 255, .10);
  --sn-text: #eef1f6;
  --sn-muted: #aab4c4;
  --sn-hover: rgba(96, 205, 255, .10);
  --sn-panel: #141a26;
}

.site-nav .nav-inner {
  width: 100%;
  max-width: 75rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav .nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  flex: 0 0 auto;
  color: var(--sn-text);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.site-nav .brand-mark {
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  display: block;
  border-radius: 0.5625rem;
}

.site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  margin: 0;
  padding: 0;
  list-style: none;
  flex: 0 1 auto;
}

.site-nav .nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.6875rem;
  border-radius: 0.5rem;
  border-bottom: 0;
  color: var(--sn-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  transition: color .18s ease, background .18s ease;
}

.site-nav .nav-links a svg {
  width: 0.9375rem;
  height: 0.9375rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .62;
  transition: opacity .18s ease;
}

.site-nav .nav-links a:hover {
  color: var(--sn-text);
  background: var(--sn-hover);
}

.site-nav .nav-links a:hover svg { opacity: .9; }

.site-nav .nav-links a.active {
  color: var(--sn-accent);
  background: transparent;
  font-weight: 500;
}

.site-nav .nav-links a.active svg { opacity: 1; }

.site-nav .nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex: 0 0 auto;
}

.site-nav .nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4375rem;
  height: 2.375rem;
  padding: 0 1rem;
  border-radius: 0.5625rem;
  background: #1677ff;
  color: #fff;
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  box-shadow: 0 0.375rem 1rem rgba(22, 119, 255, .24);
  transition: background .2s ease, transform .15s ease, box-shadow .2s ease;
}

.site-nav .nav-cta:hover {
  background: #0b66e4;
  transform: translateY(-1px);
  box-shadow: 0 0.5625rem 1.25rem rgba(22, 119, 255, .30);
}

.site-nav .nav-cta svg {
  width: 0.9375rem;
  height: 0.9375rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.site-nav .nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.375rem;
  height: 2.375rem;
  padding: 0;
  border: 0.0625rem solid var(--sn-border);
  border-radius: 0.5625rem;
  background: transparent;
  color: var(--sn-text);
  cursor: pointer;
}

.site-nav .nav-toggle svg { width: 1.25rem; height: 1.25rem; }

@media (max-width: 900px) {
  .site-nav .nav-links { display: none; }
  .site-nav .nav-links.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.125rem;
    position: absolute;
    top: var(--sn-h);
    left: 0;
    right: 0;
    padding: 0.625rem 1.125rem 0.875rem;
    background: var(--sn-panel);
    border-bottom: 0.0625rem solid var(--sn-border);
    box-shadow: 0 1rem 2rem rgba(16, 24, 40, .12);
  }
  .site-nav .nav-links.open a {
    width: 100%;
    padding: 0.625rem 0.75rem;
    font-size: 0.9375rem;
  }
  .site-nav .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .site-nav .nav-actions { margin-left: 0.5rem; }
  .site-nav .nav-cta {
    height: 2.25rem;
    padding: 0 0.75rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 420px) {
  .site-nav .nav-inner { padding: 0 1rem; gap: 0.75rem; }
  .site-nav .nav-brand { font-size: .95rem; gap: 0.5rem; }
  .site-nav .brand-mark { width: 1.75rem; height: 1.75rem; }
  .site-nav .nav-cta { padding: 0 0.625rem; }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav .nav-links a,
  .site-nav .nav-links a svg,
  .site-nav .nav-cta { transition: none; }
  .site-nav .nav-cta:hover { transform: none; }
}

                                
.site-nav .has-sub { position: relative; }

.site-nav .nav-sub-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.6875rem;
  border: 0;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--sn-muted);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: color .18s ease, background .18s ease;
}
.site-nav .nav-sub-btn:hover { color: var(--sn-text); background: var(--sn-hover); }
.site-nav .nav-sub-btn > svg { width: 0.9375rem; height: 0.9375rem; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; opacity: .62; }
.site-nav .nav-sub-btn .nav-caret { width: 0.6875rem; height: 0.6875rem; opacity: .55; transition: transform .2s ease; }
.site-nav .has-sub:hover .nav-caret,
.site-nav .has-sub.open .nav-caret { transform: rotate(180deg); }
.site-nav .has-sub.is-active .nav-sub-btn { color: var(--sn-accent); }
.site-nav .has-sub.is-active .nav-sub-btn > svg { opacity: 1; }

.site-nav .nav-sub {
  position: absolute;
  top: 100%;
  left: -0.5rem;
  width: 17.875rem;
  padding: 0.5rem;
  border: 0.0625rem solid var(--sn-border);
  border-radius: 0.75rem;
  background: #fff;
  box-shadow: 0 1.125rem 2.75rem rgba(16, 24, 40, .14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity .16s ease, transform .16s ease, visibility .16s;
  z-index: 30;
}
[data-theme="dark"] .site-nav .nav-sub { background: #141a26; }
.site-nav .has-sub.open .nav-sub,
.site-nav .has-sub:focus-within .nav-sub {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}
.site-nav .nav-sub a {
  display: flex;
  align-items: center;
  gap: 0.6875rem;
  padding: 0.625rem;
  border-radius: 0.5625rem;
  color: var(--sn-text);
  text-decoration: none;
  transition: background .16s ease;
}
.site-nav .nav-sub a:hover,
.site-nav .nav-sub a.active { background: var(--sn-hover); }
.site-nav .nav-sub a.active .sub-txt b { color: var(--sn-accent); }
.site-nav .sub-ico {
  width: 2.125rem;
  height: 2.125rem;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5625rem;
  background: rgba(55, 114, 255, .10);
  color: var(--sn-accent);
}
.site-nav .sub-ico svg { width: 1.0625rem; height: 1.0625rem; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.site-nav .sub-txt { display: flex; flex-direction: column; gap: 0.125rem; min-width: 0; }
.site-nav .sub-txt b { font-size: 0.8438rem; font-weight: 600; line-height: 1.3; }
.site-nav .sub-txt small { color: var(--sn-muted); font-size: 0.7188rem; line-height: 1.4; }

@media (min-width: 901px) {
  .site-nav .has-sub:hover .nav-sub { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }
}

@media (max-width: 900px) {
  .site-nav .has-sub { width: 100%; }
  .site-nav .nav-sub-btn { width: 100%; justify-content: flex-start; padding: 0.625rem 0.75rem; font-size: 0.9375rem; }
  .site-nav .nav-sub {
    position: static;
    width: 100%;
    padding: 0.125rem 0 0.25rem 2.125rem;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    display: none;
  }
  .site-nav .has-sub.open .nav-sub { display: block; }
                                  
  .site-nav .nav-sub { display: block; }
  .site-nav .nav-sub-btn { pointer-events: none; }
  .site-nav .nav-sub-btn .nav-caret { display: none; }
  .site-nav .nav-sub a { padding: 0.5rem 0.625rem; }
  .site-nav .sub-ico { width: 1.75rem; height: 1.75rem; }
  .site-nav .sub-txt b { font-size: 0.875rem; }
  .site-nav .sub-txt small { font-size: 0.7188rem; }
}