/* Shared navigation and tools pages only. Existing hero/art/copy rules stay in v5-v7. */
.site-header.shared-header { position: relative; z-index: 20; }
.site-header .site-nav-desktop { gap: 20px; font-size: 14px; }
.site-header .site-nav-mobile { display: none; }
.site-menu { position: relative; }
.site-menu summary { display: flex; align-items: center; justify-content: center; gap: 8px; min-width: 44px; min-height: 44px; padding: 9px 8px; list-style: none; font-size: 14px; line-height: 1.5; cursor: pointer; border: 1px solid transparent; border-radius: 2px; }
.site-menu summary::-webkit-details-marker { display: none; }
.site-menu summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.site-menu summary:hover, .site-menu[open] > summary { color: var(--accent); background: #263b35; border-color: #475a51; }
.site-menu-chevron { font-size: 18px; line-height: 1; }
.site-menu-panel { position: absolute; right: 0; top: calc(100% + 8px); width: min(288px, calc(100vw - 32px)); max-height: calc(100vh - 112px); max-height: calc(100dvh - 112px); overflow-y: auto; overflow-x: hidden; overscroll-behavior: auto; padding: 12px; border: 1px solid #63786c; border-radius: 3px; background: #202a29; color: var(--fg); box-shadow: 0 12px 28px #0005; }
.site-menu:not([open]) > .site-menu-panel { display: none; }
.site-header .site-menu-panel a { display: flex; align-items: center; min-height: 44px; padding: 10px 12px; font-size: 14px; line-height: 1.65; white-space: normal; overflow-wrap: anywhere; border-radius: 2px; }
.site-header .site-menu-panel a:hover { background: #2c3b34; }
.site-menu-panel a:focus-visible { outline-offset: -3px; }
.site-menu-section + .site-menu-section { border-top: 1px solid #475a51; margin-top: 10px; padding-top: 10px; }
.site-menu-heading { font-size: 14px; color: var(--muted); margin: 8px 12px; font-weight: 400; }
.site-menu-social { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.site-menu-social a { gap: 12px; }

.site-footer.shared-footer { display: block; }
.site-footer .footer-main { display: grid; grid-template-columns: minmax(220px, .95fr) minmax(0, 2.05fr); gap: 36px 48px; }
.site-footer .footer-link-groups { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; min-width: 0; }
.site-footer .footer-nav-group { display: flex; flex-direction: column; align-items: flex-start; margin: 0; gap: 0; font-size: 14px; }
.site-footer .footer-nav-group h2 { font-size: 14px; line-height: 1.7; font-weight: 700; color: var(--fg); margin: 0 0 8px; }
.site-footer .footer-nav-group a { min-height: 44px; max-width: 100%; padding: 8px 0; line-height: 1.8; overflow-wrap: anywhere; }
.site-footer .footer-social { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 12px; }
.site-footer .footer-notes { border-top: 1px solid #475a51; margin-top: 28px; padding-top: 24px; color: var(--muted); font-size: 14px; line-height: 1.85; }
.site-footer .footer-ad-notice h2 { margin: 0; font-size: 14px; color: var(--fg); line-height: 1.8; }
.site-footer .footer-ad-notice blockquote { margin: 12px 0; padding-left: 16px; border-left: 2px solid #63786c; }
.site-footer .footer-ad-notice p { margin: 0; }
.site-footer .footer-ad-notice > a { display: inline-flex; align-items: center; min-height: 44px; max-width: 100%; text-decoration: underline; text-underline-offset: 4px; }
.site-footer .footer-copyright { margin: 16px 0 0; }

.tools-page { background: var(--paper); color: var(--ink); }
.tools-page .site-header, .tools-page .site-footer { color: var(--fg); }
.tools-main { background: var(--paper); color: var(--ink); font-size: 16px; line-height: 1.9; overflow-wrap: anywhere; }
.tools-hero { background: var(--hero); color: var(--fg); padding: 44px max(24px, 6.5vw) 48px; }
.tools-hero > .tools-shell { padding: 0; }
.tools-hero h1 { font-size: clamp(26px, 3vw, 40px); line-height: 1.6; margin: 0 0 16px; }
.tools-hero p { font-size: 16px; line-height: 1.9; max-width: 760px; margin: 12px 0 0; color: var(--muted); }
.tools-breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 18px; font-size: 14px; }
.tools-breadcrumb a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: underline; text-underline-offset: 4px; }
.tools-shell { max-width: 1160px; margin: 0 auto; padding: 48px 32px 64px; }
.tools-toc { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px 16px; margin: 24px 0 40px; padding: 16px; border: 1px solid var(--paper-line); background: var(--surface); }
.tools-toc a { display: flex; align-items: center; min-height: 44px; padding: 8px; font-size: 15px; line-height: 1.7; color: var(--paper-accent); text-decoration: underline; text-underline-offset: 4px; }
.tools-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.tools-category { margin-bottom: 40px; scroll-margin-top: 24px; }
.tools-category h2 { font-size: 26px; line-height: 1.6; margin: 0 0 18px; }
.tools-card { min-width: 0; padding: 24px; border: 1px solid var(--paper-line); background: var(--surface); border-radius: 2px; }
.tools-card-title, .tools-card h3 { font-size: 19px; line-height: 1.7; margin: 0 0 12px; }
.tools-card-copy, .tools-card p { font-size: 16px; line-height: 1.9; margin: 12px 0; }
.tools-meta, .tools-card .tools-meta { font-size: 14px; line-height: 1.85; color: var(--paper-muted); }
.tools-links { display: flex; flex-direction: column; gap: 4px; }
.tools-links a { display: flex; align-items: center; min-height: 44px; padding: 8px 0; font-size: 15px; line-height: 1.8; color: var(--paper-accent); text-decoration: underline; text-underline-offset: 4px; }
.tools-empty { font-size: 16px; line-height: 1.9; padding: 24px; border: 1px dashed var(--paper-line); background: #e7ece6; color: var(--paper-muted); }
.tools-note { margin: 24px 0; padding: 20px 24px; border-left: 3px solid var(--paper-accent); background: var(--surface); font-size: 16px; line-height: 1.9; }
.tools-hero .tools-note { margin: 24px 0 0; background: #202a29; color: var(--fg); border-color: var(--accent); }
.tools-main a:focus-visible { outline-color: var(--paper-accent); }

@media (max-width: 1100px) {
  .site-footer .footer-main { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 960px) {
  .site-header .site-nav-desktop { display: none; }
  .site-header .site-nav-mobile { display: flex; }
  .site-menu-mobile { position: static; }
  .site-menu-mobile > summary { gap: 10px; }
  .site-menu-mobile > .site-menu-panel { top: calc(100% + 1px); left: 16px; right: 16px; width: auto; max-height: calc(100vh - 108px); max-height: calc(100dvh - 108px); }
}
@media (max-width: 720px) {
  .site-footer .footer-link-groups { grid-template-columns: 1fr; gap: 28px; }
  .tools-hero { padding: 30px 20px 36px; }
  .tools-shell { padding: 32px 20px 48px; }
  .tools-toc, .tools-grid { grid-template-columns: 1fr; }
  .tools-card { padding: 20px; }
  .tools-category h2 { font-size: 24px; }
}
@media (max-width: 380px) {
  .site-menu-mobile .site-menu-label { display: none; }
  .tools-hero { padding-left: 16px; padding-right: 16px; }
  .tools-shell { padding-left: 16px; padding-right: 16px; }
  .tools-note { padding: 16px; }
}