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.95fr;display:grid;overflow:hidden}.compare-row-group{display:contents}.compare-head,.compare-cell{background:#fff;border-bottom:1px solid #7cc2ea5c;padding:12px}.compare-head{font-family:var(--font-heading),var(--font-body),sans-serif;background:linear-gradient(#f2faff 0%,#eaf6ff 100%);font-size:1.06rem}.compare-topic{font-weight:700}.video-shell{border-radius:var(--radius-sm);background:#000;width:100%;padding-bottom:56.25%;position:relative;overflow:hidden}.video-shell iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.image-shell{border-radius:var(--radius-sm);border:1px solid #7cc2ea61;overflow:hidden}.image-shell img{object-fit:cover;width:100%;height:auto;display:block}.search-shell{border-radius:var(--radius-md);box-shadow:var(--shadow-card);background:#fff;border:1px solid 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#7cc2ea80}.footer-shell{min-height:90px;color:var(--text-soft);flex-direction:column;gap:6px;padding-block:14px 20px;font-size:.9rem;display:flex}.reveal-card{animation:.44s ease-out both card-rise}@keyframes card-rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:1ms!important;animation-duration:1ms!important;animation-iteration-count:1!important}}@media (max-width:980px){.hero-block,.knowledge-stats,.knowledge-grid,.timeline-item,.compare-grid{grid-template-columns:1fr}.compare-head{display:none}.compare-cell{border-top:1px solid #7cc2ea73;border-bottom:none}.compare-topic{background:#eef8ff;border-top:none}}@media (max-width:760px){.header-shell{flex-direction:column;align-items:flex-start;padding-block:12px}.main-nav{justify-content:flex-start}.knowledge-tab-row{width:100%}.knowledge-tab{text-align:left;width:100%}.knowledge-jump-row p{width:100%}.lang-select-wrap{margin-top:4px}.page-shell{width:min(1160px,100% - 24px);padding-top:24px;padding-bottom:52px}}