.classroom-wrap{width:100%;max-width:1000px;margin:0 auto;padding:0 24px 80px}.classroom-article-wrap{width:100%;max-width:1000px;margin:0 auto;padding:24px 24px 80px}.classroom-toolbar{justify-content:flex-end;gap:4px;margin-bottom:16px;display:flex}.classroom-toggle{border:1px solid var(--color-border);color:var(--color-text-primary);cursor:pointer;background:0 0;border-radius:6px;padding:6px 14px;font-size:.85rem;font-weight:600}.classroom-toggle.is-active{background:var(--color-accent);color:#000}.classroom-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.classroom-list{flex-direction:column;gap:12px;width:100%;display:flex}.classroom-card-link{color:inherit;min-width:0;text-decoration:none}.classroom-card{background:var(--color-bg);border:1px solid var(--color-border);cursor:pointer;border-radius:12px;flex-direction:column;min-width:0;height:100%;transition:transform .2s,box-shadow .2s;display:flex;overflow:hidden}.classroom-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0000001f}.dark .classroom-card:hover{box-shadow:0 8px 24px #00000059}.classroom-card-img{aspect-ratio:1;background:var(--color-surface);flex-shrink:0;width:100%;overflow:hidden}.classroom-card-img img{object-fit:cover;width:100%;height:100%;display:block}.classroom-card-body{flex-direction:column;flex:1;min-width:0;padding:16px;display:flex}.classroom-card-title{color:var(--color-text-primary);-webkit-line-clamp:2;overflow-wrap:anywhere;-webkit-box-orient:vertical;margin:0 0 8px;font-size:1.05rem;font-weight:700;line-height:1.4;display:-webkit-box;overflow:hidden}.classroom-card-summary{color:var(--color-text-secondary);-webkit-line-clamp:3;overflow-wrap:anywhere;-webkit-box-orient:vertical;flex:1;margin:0;font-size:.9rem;line-height:1.5;display:-webkit-box;overflow:hidden}.classroom-card-date{color:var(--color-text-tertiary);margin-top:12px;font-size:.8rem}.classroom-card--row{flex-direction:row;width:100%;height:auto;min-height:80px}.classroom-card--row .classroom-card-img{aspect-ratio:auto;border-radius:6px;align-self:center;width:80px;height:80px}.classroom-card--row .classroom-card-body{justify-content:center;padding:8px 14px}.classroom-card--row .classroom-card-title{-webkit-line-clamp:1;margin-bottom:6px;font-size:1rem}.classroom-card--row .classroom-card-summary{-webkit-line-clamp:2;font-size:.85rem}.classroom-card--row .classroom-card-date{margin-top:6px;font-size:.78rem}.classroom-breadcrumb{color:var(--color-text-secondary);overflow-wrap:anywhere;margin-bottom:24px;font-size:.9rem}.classroom-breadcrumb a{color:var(--color-accent);text-decoration:none}.classroom-article-head{margin-bottom:32px}.classroom-article-cat{background:var(--color-accent);color:#000;border-radius:20px;margin-bottom:12px;padding:4px 12px;font-size:.8rem;font-weight:600;display:inline-block}.classroom-article-title{color:var(--color-text-primary);overflow-wrap:anywhere;margin:0 0 12px;font-size:1.8rem;font-weight:800;line-height:1.3}.classroom-article-date{color:var(--color-text-tertiary);font-size:.85rem}.classroom-cover{background:var(--color-surface);border-radius:12px;justify-content:center;align-items:center;height:400px;margin-bottom:32px;display:flex;overflow:hidden}.classroom-cover img{object-fit:contain;width:100%;height:100%;display:block}.classroom-article-content{color:var(--color-text-primary);overflow-wrap:anywhere;font-size:1.05rem;line-height:1.8}.classroom-article-footer{border-top:1px solid var(--color-border);margin-top:48px;padding-top:24px}.classroom-back-link{color:var(--color-accent);font-size:.95rem;font-weight:600;text-decoration:none}@media (max-width:1024px){.classroom-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:768px){.classroom-wrap{padding:0 16px 60px}.classroom-article-wrap{padding:20px 16px 60px}.classroom-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.classroom-card-body{padding:12px}.classroom-card-title{font-size:.95rem}.classroom-card-summary{-webkit-line-clamp:2;font-size:.8rem}.classroom-article-title{font-size:1.4rem}.classroom-cover{height:220px;margin-bottom:24px}.classroom-article-content{font-size:1rem}}