/* ============================================================
   工具站共享外壳
   统一导航、页脚和移动端菜单，让目录页与内容页拥有同一套入口。
   ============================================================ */

:root {
  --site-paper: #fcfaf8;
  --site-paper-deep: #f3eee3;
  --site-ink: #26251e;
  --site-ink-soft: #504f49;
  --site-muted: #8f8b81;
  --site-line: rgba(38, 37, 30, 0.1);
  --site-line-strong: rgba(38, 37, 30, 0.24);
  --site-accent: #d97e1f;
}

body[data-page] .site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0;
  background: rgba(252, 250, 248, 0.9);
  border-bottom: 1px solid var(--site-line);
  box-shadow: 0 10px 28px rgba(38, 37, 30, 0.035);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

body[data-page] .site-nav .nav-inner {
  max-width: 1120px;
  height: 64px;
  padding: 0 clamp(18px, 3.2vw, 32px);
  gap: 20px;
}

body[data-page] .site-nav .nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--site-ink);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1;
}

body[data-page] .site-nav .nav-logo .logo-mark {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(217, 126, 31, 0.32);
  border-radius: 9px;
  background: var(--site-ink);
  color: #f4b64f;
  font-size: 15px;
  box-shadow: 0 5px 14px rgba(38, 37, 30, 0.13);
}

body[data-page] .site-nav .nav-logo-copy {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

body[data-page] .site-nav .nav-logo-copy strong {
  color: var(--site-ink);
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

body[data-page] .site-nav .nav-logo-copy small {
  color: var(--site-muted);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

body[data-page] .site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

body[data-page] .site-nav .nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 7px 13px;
  border-radius: 9px;
  color: var(--site-ink-soft);
  font-size: 14px;
  font-weight: 550;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, background-color 0.2s ease;
}

body[data-page] .site-nav .nav-link::after {
  left: 13px;
  right: 13px;
  bottom: 3px;
  height: 2px;
  background: var(--site-accent);
  transform-origin: center;
}

body[data-page] .site-nav .nav-link:hover,
body[data-page] .site-nav .nav-link.active {
  color: var(--site-ink);
  background: rgba(217, 126, 31, 0.075);
}

body[data-page] .site-nav .nav-link:focus-visible,
body[data-page] .site-nav .nav-toggle:focus-visible {
  outline: 2px solid var(--site-accent);
  outline-offset: 2px;
}

body[data-page] .site-nav .nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: 1px solid var(--site-line-strong);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}

body[data-page] .site-nav .nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--site-ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

body[data-page] .site-nav .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body[data-page] .site-nav .nav-toggle.active span:nth-child(2) { opacity: 0; }
body[data-page] .site-nav .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

body[data-page] .site-footer {
  position: relative;
  z-index: 2;
  margin-top: auto;
  padding: 0;
  background: transparent;
  text-align: center;
}

body[data-page] .site-footer .footer-inner {
  max-width: 1120px;
  margin-inline: auto;
  padding: 34px clamp(18px, 3.2vw, 32px) 28px;
  border-top: 1px solid var(--site-line);
  color: rgba(38, 37, 30, 0.52);
  font-size: 12px;
  line-height: 1.7;
}

body[data-page] .site-footer .footer-brand {
  margin: 0 0 10px;
  color: var(--site-muted);
}

body[data-page] .site-footer .footer-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--site-ink-soft);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

body[data-page] .site-footer .footer-brand-link span {
  color: var(--site-accent);
}

body[data-page] .site-footer .footer-context {
  margin-left: 4px;
  color: var(--site-muted);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.16em;
}

body[data-page] .site-footer .footer-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin: 0 0 12px;
  padding: 0;
}

body[data-page] .site-footer .footer-nav a,
body[data-page] .site-footer .icp a {
  color: rgba(38, 37, 30, 0.62);
  text-decoration: none;
  text-underline-offset: 3px;
  transition: color 0.2s ease, opacity 0.2s ease;
}

body[data-page] .site-footer .footer-nav a:hover,
body[data-page] .site-footer .icp a:hover {
  color: var(--site-accent);
}

body[data-page] .site-footer .icp {
  margin: 0;
  color: rgba(38, 37, 30, 0.48);
  font-size: 11px;
  text-align: center;
}

body[data-page] .site-footer .disclaimer {
  max-width: 620px;
  margin: 8px auto 0;
  color: rgba(38, 37, 30, 0.44);
  font-size: 11px;
}

@media (max-width: 768px) {
  body[data-page] .site-nav .nav-inner {
    height: 60px;
  }

  body[data-page] .site-nav .nav-toggle {
    display: flex;
  }

  body[data-page] .site-nav .nav-links {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 3px;
    padding: 10px 16px 16px;
    border-bottom: 1px solid var(--site-line);
    background: rgba(252, 250, 248, 0.98);
    box-shadow: 0 12px 22px rgba(38, 37, 30, 0.06);
  }

  body[data-page] .site-nav .nav-links.open {
    display: flex;
  }

  body[data-page] .site-nav .nav-link {
    justify-content: space-between;
    min-height: 44px;
    padding: 10px 13px;
  }

  body[data-page] .site-footer .footer-inner {
    padding-top: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body[data-page] .site-nav *,
  body[data-page] .site-footer * {
    transition-duration: 0.01ms !important;
  }
}