/* Navigation only: values from the current official homepage, 2026-10-14 UTC.
   No global variables, body, catalog, gate, model, or footer selectors. */
.scheme-site-nav {
  --paper: #faf9f6;
  --ink: #282b28;
  --line: #d8dad2;
  --rust: #7a4033;
  --surface: #eeefea;
  height: 82px;
  padding: 0 6vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0;
  background: var(--paper);
  color: var(--ink);
  position: sticky;
  top: 0;
  z-index: 20;
  font: 400 16px/1.8 "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
  transition: height .3s ease, box-shadow .3s ease, background-color .3s ease;
}
.scheme-site-nav.is-scrolled {
  height: 68px;
  background: rgba(250,249,246,.96);
  box-shadow: 0 8px 30px rgba(40,43,40,.06);
  backdrop-filter: blur(14px);
}
.scheme-site-nav > .brand { display: flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.scheme-site-nav > .brand img { display: block; width: 172px; height: auto; }
.scheme-site-nav > nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font: 400 15px/1.8 "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
  background: var(--paper);
  color: var(--ink);
}
.scheme-site-nav nav a { color: inherit; text-decoration: none; border: 0; padding: 0; white-space: normal; }
.scheme-site-nav .nav-toggle {
  display: none; border: 0; border-radius: 0; background: none; color: inherit;
  padding: 0; font-family: inherit; font-size: 24px; font-weight: 400;
  line-height: 1.8; letter-spacing: 0;
}
.scheme-site-nav .nav-toggle:hover { background: none; }
.scheme-site-nav .client-entry { position: relative; }
.scheme-site-nav .client-entry > summary {
  display: flex; align-items: center; gap: 8px; list-style: none;
  cursor: pointer; font: inherit; letter-spacing: inherit;
}
.scheme-site-nav .client-entry > summary::-webkit-details-marker { display: none; }
.scheme-site-nav .client-entry > summary::after {
  content: ""; width: 6px; height: 6px;
  border-right: 1px solid currentColor; border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}
.scheme-site-nav .client-entry[open] > summary::after { transform: rotate(225deg) translateY(-2px); }
.scheme-site-nav .client-entry-links {
  position: absolute; top: calc(100% + 16px); left: 0;
  min-width: 168px; max-width: calc(100vw - 32px); padding: 8px;
  background: var(--paper); border: 1px solid var(--line);
  box-shadow: 0 10px 24px rgba(20,22,18,.12);
}
.scheme-site-nav .client-entry-links > a {
  display: flex; align-items: center; min-height: 44px; padding: 8px 12px; white-space: nowrap;
}
.scheme-site-nav .client-entry-links > a:is(:hover,:focus-visible) { background: var(--surface); }
.scheme-site-nav :focus-visible,
.scheme-site-nav nav a:focus-visible { outline: 2px solid var(--rust); outline-offset: 4px; }
.scheme-site-nav ::selection { background: #e7d7cf; color: var(--ink); }
.scheme-site-nav .client-entry-links > a[aria-current="page"] { background: var(--surface); }
/* The original gate script creates this button. Only its placement is adapted. */
.report-session-actions { position: absolute; top: 90px; right: 6vw; display: flex; justify-content: flex-end; }
.report-session-actions:empty { display: none; }
.report-session-actions > button { font-size: 13px !important; }
@media (min-width: 801px) and (max-width: 1100px) {
  .scheme-site-nav > nav { gap: 20px; }
}
@media (max-width: 800px) {
  .report-session-actions { top: 76px; }
  .scheme-site-nav { height: 68px; }
  .scheme-site-nav.is-scrolled { height: 62px; }
  .scheme-site-nav > .brand img { width: 142px; }
  .scheme-site-nav .nav-toggle { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; }
  .scheme-site-nav > nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    padding: 16px 24px; flex-direction: column; align-items: stretch; gap: 10px;
    box-shadow: none; font-size: 15px; line-height: 1.6;
    max-height: calc(100vh - 68px); max-height: calc(100dvh - 68px); overflow-y: auto;
  }
  .scheme-site-nav.open > nav { display: flex; }
  .scheme-site-nav > nav > a, .scheme-site-nav .client-entry > summary {
    display: flex; align-items: center; min-height: 44px; padding: 8px 0;
  }
  .scheme-site-nav .client-entry-links {
    position: static; min-width: 0; max-width: 100%; margin-top: 4px;
    padding: 0 0 0 12px; border: 0; border-left: 1px solid var(--line); box-shadow: none;
  }
}