/* Approved palette 02: pale gray-purple and dark ink. */
.title-row:has([data-subject-switcher]){gap:12px;flex-wrap:nowrap}
.subject-heading{display:flex;align-items:center;gap:12px;min-width:0;flex:1 1 auto}
.subject-heading h1.site-title{margin:0;max-width:none;min-width:0;flex:0 1 auto}
.subject-heading h1.site-title>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.subject-heading .brand-logo{flex-shrink:0}
[data-subject-switcher]{position:relative;flex:0 0 auto}
.subject-switch-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:34px;height:34px;margin:0;padding:0 11px;border:1px solid #dcdde7;border-radius:9px;background:#ececf3;color:#293142;box-shadow:none;font:500 12px/1.2 Arial,"Microsoft YaHei",sans-serif;white-space:nowrap;cursor:pointer;transition:background .15s}
.subject-switch-button:hover,.subject-switch-button[aria-expanded=true]{background:#e2e2ee;border-color:#dcdde7;color:#293142;transform:none;box-shadow:none}
.subject-switch-button svg{width:14px;height:14px;flex:0 0 14px;fill:none;stroke:currentColor;stroke-width:1.5}
.subject-switch-chevron{transition:transform .15s}
.subject-switch-button[aria-expanded=true] .subject-switch-chevron{transform:rotate(180deg)}
.subject-switch-button:focus-visible,.subject-switch-link:focus-visible{outline:3px solid #b4a1f2;outline-offset:2px}
.subject-switch-panel{position:fixed;z-index:1000;box-sizing:border-box;padding:8px;background:#fff;border:1px solid #e2dfed;border-radius:14px;box-shadow:0 12px 32px #27315520;overflow:auto;overscroll-behavior:contain;text-align:left}
.subject-switch-panel[hidden]{display:none!important}
.subject-switch-caption{padding:8px 12px 10px;font:400 11px/1.5 Arial,"Microsoft YaHei",sans-serif;color:#9398a7;letter-spacing:.06em}
.subject-switch-link{display:flex;align-items:center;gap:11px;box-sizing:border-box;min-height:45px;padding:10px 12px;border:0;border-radius:8px;color:#354055;background:transparent;text-decoration:none;font:400 13px/1.5 Arial,"Microsoft YaHei",sans-serif;white-space:normal}
.subject-switch-link:hover{background:#f5f3fb;color:#354055;text-decoration:none}
.subject-switch-link[aria-current=page]{background:#f0ecff;color:#7250c1;font-weight:600}
.subject-switch-dot{width:6px;height:6px;background:#c8c3d8;border-radius:50%;flex:0 0 6px}
.subject-switch-link[aria-current=page] .subject-switch-dot{background:#8d63e7}
.subject-switch-check{margin-left:auto;color:#7957cb;font-size:16px}
@media(max-width:700px){.title-row:has([data-subject-switcher]){gap:7px}.subject-heading{gap:7px}.subject-switch-panel{border-radius:12px}.subject-switch-link{min-height:47px}}
@media(max-width:560px){.subject-switch-label{display:none}.subject-switch-button{padding:0 7px;gap:4px;width:41px;height:32px;min-height:32px}.subject-switch-button .subject-switch-chevron{width:12px;flex-basis:12px}.subject-heading{gap:5px}.title-row:has([data-subject-switcher]){gap:5px}}