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:root{--bg:var(--sr-bg);--paper:var(--sr-surface);--ink:var(--sr-text);--muted:var(--sr-text-muted);--line:var(--sr-border);--blue:var(--sr-blue);--blue-dark:var(--sr-blue-highlight);--blue-soft:var(--sr-surface-muted);--radius:var(--sr-radius-card);font-family:var(--sr-font-body);color:var(--ink);background:var(--bg);font-size:16px}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:wait;opacity:.55}button{background:0 0;border:0}input,textarea,select{color:var(--ink)}a{color:var(--blue)}button:focus-visible,a:focus-visible{outline:3px solid var(--sr-focus);outline-offset:4px}input:focus,select:focus,textarea:focus{outline:2px solid 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var(--sr-border);border-radius:var(--sr-radius-card);width:33px;height:34px;color:var(--sr-text);place-items:center;display:grid}.nav-label{letter-spacing:1.5px;color:var(--sr-text);margin:0 12px 11px;font-size:12px;font-weight:650}.nav-item{text-align:left;border-radius:var(--sr-radius-control);width:100%;color:var(--sr-text);align-items:center;gap:11px;min-height:39px;margin-bottom:4px;padding:11px 13px;font-size:14px;display:flex}.nav-item:hover{background:var(--sr-surface-muted)}.nav-item.active{background:var(--sr-surface-muted);color:var(--sr-text);font-weight:550}.nav-item.active-sub{background:var(--sr-surface-muted);color:var(--sr-text)}.nav-count{background:var(--sr-surface-muted);color:var(--sr-text);border-radius:var(--sr-radius-control);margin-left:auto;padding:2px 5px;font-size:12px}.class-label{justify-content:space-between;align-items:center;margin-top:29px;margin-bottom:7px;display:flex}.class-label 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