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.75rem;color:var(--text-secondary);line-height:1.5}.page--error{color:var(--text-danger)}@media(max-width:48rem){.teacher-shell{display:block;padding-bottom:5.5rem}.teacher-shell__sidebar{display:none}.teacher-shell__mobile-bar{display:flex;align-items:center;justify-content:space-between;min-height:3.75rem;padding:.4rem .75rem;background:var(--surface-1);border-bottom:1px solid var(--border)}.teacher-shell__mobile-bar .teacher-shell__brand,.teacher-shell__mobile-bar .user-chip{padding:0}.teacher-shell__mobile-bar .user-chip__identity .nav-label{display:none}.teacher-shell__main{padding:1rem .9rem 2rem}.teacher-shell__bottom-nav{position:fixed;right:0;bottom:0;left:0;z-index:20;display:grid;grid-template-columns:repeat(4,1fr);gap:.15rem;padding:.35rem .35rem calc(.35rem + env(safe-area-inset-bottom));background:var(--surface-1);border-top:1px solid var(--border);box-shadow:var(--shadow-md)}.teacher-shell__bottom-nav a,.teacher-shell__bottom-nav button{display:grid;min-width:0;min-height:3.75rem;place-items:center;gap:.15rem;padding:.25rem;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);font:inherit;font-size:.68rem;text-decoration:none;cursor:pointer}.teacher-shell__bottom-nav a.is-active,.teacher-shell__bottom-nav a.router-link-active,.teacher-shell__bottom-nav button.is-active,.teacher-shell__bottom-nav button.router-link-active{background:var(--bg-accent);color:var(--text-accent);font-weight:600}.teacher-shell__bottom-nav svg{width:1.25rem;height:1.25rem;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.teacher-shell__more{position:fixed;right:.75rem;bottom:calc(5.25rem + env(safe-area-inset-bottom));z-index:21;display:grid;min-width:min(15rem,100vw - 1.5rem);padding:.5rem;background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-md)}.teacher-shell__more a,.teacher-shell__more button{min-height:2.75rem;padding:.6rem .75rem;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--text-primary);font:inherit;text-align:left;text-decoration:none;cursor:pointer}.teacher-shell__more a:hover,.teacher-shell__more button:hover{background:var(--surface-2)}}.card{background:var(--surface-2);border-radius:var(--radius-lg);gap:20px;padding:1.25rem 1.5rem;transition:box-shadow .15s ease,transform .15s ease}.card--clickable{cursor:pointer}.card--clickable:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.card__title{font-weight:600;font-size:1rem;margin-bottom:8px}.card__meta{font-size:.8928571429rem;color:var(--text-muted)}.card__due{font-size:.8928571429rem;color:var(--text-danger);display:flex;align-items:center;gap:5px;font-weight:500}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:28px}.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;list-style:none;margin:0;padding:0}.article-tile{display:flex;align-items:center;gap:12px;background:var(--surface-2);border-radius:12px;padding:.9rem 1.1rem;text-decoration:none;color:var(--text-primary);min-width:0}.article-tile:hover{color:var(--text-primary)}.article-tile__thumb{width:60px;height:60px;flex-shrink:0;border-radius:8px;overflow:hidden;background:var(--surface-1)}.article-tile__thumb img{display:block;width:60px;height:60px;object-fit:cover}.article-tile__title{font-size:.9642857143rem;line-height:1.35;min-width:0}.article-tile__edit{margin-left:auto;flex-shrink:0;font-size:.8571428571rem;color:var(--text-muted)}