/*
 * XuanKong shared navigation shell.
 *
 * Homepage, BaZi, React tools and generated static pages all load this file.
 * Keep visual tokens here so page generators cannot silently drift apart.
 */
:root {
  --xk-nav-ink: #1a1816;
  --xk-nav-muted: #5a544e;
  --xk-nav-red: #991a1a;
  --xk-nav-paper: #fffdf9;
  --xk-nav-line: rgba(26, 24, 22, .12);
  --xk-nav-serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", STSong, SimSun, serif;
}

.site-header,
#global-pc-nav,
#global-mobile-nav {
  font-family: var(--xk-nav-serif) !important;
}

.site-header,
#global-pc-nav {
  position: sticky !important;
  top: 0;
  z-index: 300 !important;
  width: 100%;
  color: var(--xk-nav-ink);
  background: rgba(255, 253, 249, .96) !important;
  border-bottom: 1px solid var(--xk-nav-line) !important;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .8), 0 8px 26px rgba(26, 24, 22, .035) !important;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px) !important;
}

.site-header .nav-shell,
#global-pc-nav .gnav-in {
  width: min(100% - 40px, 1280px) !important;
  min-height: 72px !important;
  margin: 0 auto !important;
  padding: 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 24px !important;
  box-sizing: border-box;
}

.site-header .brand,
#global-pc-nav .gnav-logo {
  min-width: max-content;
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  color: var(--xk-nav-ink) !important;
  font-size: 18px !important;
  font-weight: 900 !important;
  line-height: 1 !important;
  letter-spacing: .04em !important;
  text-decoration: none !important;
}

#global-pc-nav .gnav-logo img,
#global-pc-nav .gnav-seal,
.site-header .brand-seal {
  width: 34px !important;
  height: 34px !important;
  border-radius: 0 !important;
}

#global-pc-nav .gnav-seal {
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--xk-nav-red);
  font-size: 17px;
}

.site-header .brand-seal {
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--xk-nav-red);
  font-size: 17px;
}

.site-header .brand-type,
.gnav-type,
.site-header .brand-type strong,
.gnav-type strong,
.site-header .brand-cn {
  font-size: 16px !important;
  font-weight: 900 !important;
  line-height: 1.08 !important;
  letter-spacing: .08em !important;
}

.site-header .brand-type small,
.gnav-type small,
.site-header .brand-en {
  display: block;
  margin-top: 5px;
  color: var(--xk-nav-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace !important;
  font-size: 8px !important;
  font-weight: 700 !important;
  letter-spacing: .18em !important;
}

.site-header .desktop-nav,
#global-pc-nav .gnav-links {
  display: flex !important;
  align-items: center !important;
  justify-content: center;
  gap: clamp(18px, 2.1vw, 30px) !important;
  margin-left: auto;
  overflow: visible !important;
}

.site-header .desktop-nav h3,
#global-pc-nav .gnav-links h2 {
  margin: 0 !important;
  font-size: 13px !important;
  line-height: 1 !important;
}

.site-header .desktop-nav a,
#global-pc-nav .gnav-links a {
  display: inline-block;
  padding: 27px 0 24px !important;
  color: var(--xk-nav-muted) !important;
  border: 0 !important;
  border-bottom: 2px solid transparent !important;
  font-size: 13px !important;
  font-weight: 800 !important;
  line-height: 1 !important;
  letter-spacing: .08em !important;
  opacity: .62 !important;
  text-decoration: none !important;
  text-transform: none !important;
  white-space: nowrap;
}

.site-header .desktop-nav a:hover,
#global-pc-nav .gnav-links a:hover {
  color: var(--xk-nav-red) !important;
  opacity: 1 !important;
}

.site-header .desktop-nav a.nav-current-link,
#global-pc-nav .gnav-links a.on {
  color: var(--xk-nav-red) !important;
  border-bottom-color: var(--xk-nav-red) !important;
  opacity: 1 !important;
}

.site-header .nav-actions,
#global-pc-nav .gnav-right {
  min-width: max-content;
  display: flex !important;
  align-items: center !important;
  gap: 9px !important;
}

.site-header .language-switch,
.site-header .login-button,
.site-header .nav-auth-button,
#global-pc-nav .gnav-lang summary,
#global-pc-nav .gnav-login {
  min-height: 36px !important;
  box-sizing: border-box;
  border: 1px solid rgba(26, 24, 22, .16) !important;
  border-radius: 0 !important;
  color: var(--xk-nav-muted) !important;
  background: rgba(255, 255, 255, .72) !important;
  font-family: var(--xk-nav-serif) !important;
  font-size: 12px !important;
  font-weight: 800 !important;
  letter-spacing: .04em !important;
}

#global-pc-nav .gnav-lang summary { padding: 9px 11px !important; }
#global-pc-nav .gnav-login,
.site-header .login-button,
.site-header .nav-auth-button { padding: 0 13px !important; }

#global-pc-nav .gnav-lang-menu,
.site-header .language-menu {
  top: calc(100% + 8px) !important;
  min-width: 148px !important;
  padding: 7px !important;
  border: 1px solid var(--xk-nav-line) !important;
  border-radius: 0 !important;
  background: var(--xk-nav-paper) !important;
  box-shadow: 0 18px 48px rgba(26, 24, 22, .14) !important;
}

#global-pc-nav .gnav-lang-menu a,
.site-header .language-menu a {
  padding: 9px 11px !important;
  border: 0 !important;
  border-radius: 0 !important;
  font-size: 13px !important;
  font-weight: 700 !important;
  letter-spacing: 0 !important;
  opacity: 1 !important;
  text-transform: none !important;
}

#global-static-mobile-nav { display: none; }

body.xk-intro-open { overflow: hidden !important; }
.xk-language-intro[hidden] { display: none !important; }
.xk-language-intro {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--xk-nav-ink);
  background: rgba(26, 24, 22, .62);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-family: var(--xk-nav-serif);
}
.xk-language-intro-panel {
  position: relative;
  width: min(780px, 100%);
  max-height: min(760px, calc(100vh - 48px));
  overflow: auto;
  padding: clamp(30px, 5vw, 64px);
  box-sizing: border-box;
  background:
    linear-gradient(90deg, transparent 0 18px, rgba(153,26,26,.08) 18px 19px, transparent 19px),
    var(--xk-nav-paper);
  border: 1px solid rgba(255,255,255,.7);
  box-shadow: 0 34px 100px rgba(0,0,0,.3);
}
.xk-language-intro-panel::before { content:"玄";position:absolute;right:32px;bottom:8px;color:rgba(153,26,26,.045);font:900 160px/1 "STKaiti","KaiTi",serif;transform:rotate(-8deg);pointer-events:none; }
.xk-language-intro-kicker { margin:0 0 18px;color:var(--xk-nav-red);font:800 11px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.22em; }
.xk-language-intro h1 { position:relative;margin:0 42px 18px 0;font-size:clamp(28px,4vw,48px);font-weight:900;line-height:1.1;letter-spacing:-.035em; }
.xk-language-intro-lead { position:relative;margin:0 0 20px;color:var(--xk-nav-muted);font-size:16px;line-height:1.8; }
.xk-language-intro ol { position:relative;margin:0;padding:18px 0 18px 24px;border-top:1px solid var(--xk-nav-line);border-bottom:1px solid var(--xk-nav-line);font-size:14px;line-height:1.8; }
.xk-language-intro-links { position:relative;display:flex;flex-wrap:wrap;gap:10px 22px;margin:20px 0 12px; }
.xk-language-intro-links a { color:var(--xk-nav-red);font-size:14px;font-weight:800;text-decoration:none; }
.xk-language-intro-note { position:relative;margin:0;color:var(--xk-nav-muted);font-size:12px;line-height:1.65; }
.xk-language-intro-actions { position:relative;display:flex;flex-wrap:wrap;gap:10px;margin-top:26px; }
.xk-language-intro-actions button { min-height:42px;padding:0 20px;border:1px solid var(--xk-nav-red);border-radius:0;background:var(--xk-nav-red);color:#fff;font:800 13px/1 var(--xk-nav-serif);cursor:pointer; }
.xk-language-intro-actions button:last-child { color:var(--xk-nav-red);background:transparent; }
.xk-language-intro-x { position:absolute;z-index:2;top:18px;right:20px;width:42px;height:42px;border:1px solid var(--xk-nav-line);background:transparent;color:var(--xk-nav-red);font:300 28px/1 sans-serif;cursor:pointer; }

@media (max-width: 1199px) {
  #global-pc-nav { display: none !important; }
  #global-static-mobile-nav {
    position: sticky;
    top: 0;
    z-index: 300;
    min-height: 62px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    color: var(--xk-nav-ink);
    background: rgba(255, 253, 249, .97);
    border-bottom: 1px solid var(--xk-nav-line);
    font-family: var(--xk-nav-serif);
    box-sizing: border-box;
  }
  #global-static-mobile-nav .gsm-brand { display:flex;align-items:center;gap:9px;color:var(--xk-nav-ink);font-weight:900;text-decoration:none; }
  #global-static-mobile-nav .gsm-seal { width:34px;height:34px;display:grid;place-items:center;color:#fff;background:var(--xk-nav-red); }
  #global-static-mobile-nav details { position:relative; }
  #global-static-mobile-nav summary { list-style:none;width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--xk-nav-line);color:var(--xk-nav-red);background:#fff;cursor:pointer; }
  #global-static-mobile-nav summary::-webkit-details-marker { display:none; }
  #global-static-mobile-nav .gsm-drawer { position:absolute;right:0;top:calc(100% + 10px);width:min(330px,calc(100vw - 24px));padding:10px;background:var(--xk-nav-paper);border:1px solid var(--xk-nav-line);box-shadow:0 20px 56px rgba(26,24,22,.18); }
  #global-static-mobile-nav .gsm-links { display:grid; }
  #global-static-mobile-nav .gsm-links a { padding:13px 12px;color:var(--xk-nav-ink);border-bottom:1px solid var(--xk-nav-line);font-size:15px;font-weight:800;text-decoration:none; }
  #global-static-mobile-nav .gnav-lang { margin:10px 0 2px 8px; }

  #global-mobile-nav {
    height: 62px !important;
    color: var(--xk-nav-ink) !important;
    background: rgba(255, 253, 249, .97) !important;
    border-bottom: 1px solid var(--xk-nav-line) !important;
  }
  #global-mobile-nav > div:first-child { padding: 0 16px !important; }

  .site-header .nav-shell { width: calc(100% - 28px) !important; min-height: 62px !important; }
  .site-header .desktop-nav,
  .site-header .login-button,
  .site-header .nav-auth-button { display: none !important; }
  .site-header .brand-seal { width: 34px !important; height: 34px !important; }
}

@media (min-width: 1200px) {
  #global-mobile-nav,
  .site-header .mobile-menu,
  .site-header .menu-button,
  .site-header .mobile-drawer { display: none !important; }
}