/* v212: compact, shared inner-page menu; SVG controls retain accessible names. */
body .site-shell header.page-menu{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:8px;align-items:center;position:relative;margin-bottom:20px;width:100%;box-sizing:border-box}
.page-menu-left,.page-menu-right,#pageReadingActions{display:flex;align-items:center;gap:4px;min-width:0}
body .page-menu :is(h1,.page-heading,.brand,.tb-head){position:static;transform:none;min-width:0;width:auto;font-family:inherit;font-size:clamp(16px,2.5vw,22px);font-weight:600;line-height:1.4;letter-spacing:.02em;white-space:normal;overflow-wrap:anywhere;text-align:center;margin:0;padding:0}
body .page-menu-left>a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;font-size:14px;white-space:nowrap;text-decoration:none;color:inherit}
body .menu-icon,body .page-menu .reading-tools button{display:inline-flex;align-items:center;justify-content:center;flex:0 0 44px;width:44px;height:44px;min-height:44px;padding:10px;margin:0;border:0;border-radius:8px;background:transparent;color:inherit;cursor:pointer;font:inherit;box-sizing:border-box}
.menu-icon svg,.page-menu .reading-tools svg{display:block;width:24px;height:24px;flex:none}
.menu-icon:hover,.page-menu .reading-tools button:hover{background:var(--soft,#83949a22)}
.menu-icon:focus-visible{outline:2px solid var(--tech,#427d85);outline-offset:2px}
body .page-menu .theme{display:flex;gap:0;padding:3px;flex:none;margin:0}
body .page-menu .theme button{min-width:28px;min-height:38px;padding:6px;font-size:14px;line-height:1;border-radius:7px}
body .page-menu .reading-tools{position:static;display:flex;margin:0;padding:0;border:0;box-shadow:none;background:transparent;color:inherit}
body .page-menu .reading-tools-row{display:flex;gap:0;flex-wrap:nowrap}
body .page-menu .reading-tools button:disabled{opacity:.35;cursor:default}
body .page-menu .reading-tools p{position:absolute;z-index:40;top:100%;right:0;max-width:min(360px,100%);padding:10px 14px;border:1px solid var(--line,#82949f);border-radius:8px;background:var(--card,var(--surface,#fff));color:var(--ink,var(--text,#203440));box-shadow:0 4px 14px #0002}
.page-help-dialog{box-sizing:border-box;width:min(640px,calc(100vw - 24px));max-height:85dvh;overflow:auto;overscroll-behavior:contain;border:1px solid var(--line,#82949f);border-radius:14px;padding:20px;background:var(--card,var(--surface,#fff));color:var(--ink,var(--text,#203440));font:16px/1.75 system-ui,-apple-system,'PingFang TC',sans-serif}
.page-help-dialog::backdrop{background:#0008}
.page-help-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.page-help-heading h2{margin:0;font-size:20px}.page-help-body{max-width:none}.page-help-body nav{display:flex;flex-wrap:wrap;gap:12px}.page-help-body a{color:inherit}
.four-pillars-row,.heluo-pillars{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));text-align:center;gap:8px}.four-pillars-row strong,.heluo-pillars strong{display:block}
@media(max-width:420px){body .site-shell header.page-menu{gap:3px}.page-menu-left,.page-menu-right{gap:0}body .page-menu-left>a{font-size:12px}body .page-menu .theme{padding:2px}body .page-menu .theme button{min-width:26px;padding-inline:4px}}
@media print{.page-menu,.page-help-dialog{display:none!important}}