.atlas-main{max-width:1240px;margin:auto;padding:38px 32px 45px}.atlas-heading{margin-bottom:26px}.atlas-heading h1{font-size:32px;margin:8px 0}.atlas-heading>p{color:#727b8d;max-width:800px;font-size:15px}.atlas-controls{display:flex;gap:14px;background:#fff;border:1px solid var(--border);border-radius:13px;padding:18px}.atlas-controls label{display:flex;flex-direction:column;gap:7px;min-width:145px;font-size:12px;color:#727b8d}.atlas-controls .atlas-search{flex:1;min-width:0}.atlas-controls input,.atlas-controls select{border:1px solid #e0e0e9;border-radius:7px;padding:10px 12px;background:#fafafd;color:#41485b;font-size:14px;width:100%;height:44px}.atlas-results-bar{display:flex;justify-content:space-between;gap:16px;font-size:12px;color:#8a8f9c;margin:22px 2px 13px}.atlas-results-bar p{color:#64537f}.formula-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.formula-tile{position:relative;display:flex;flex-direction:column;min-width:0;text-align:left;border:1px solid #e3e2eb;border-top:3px solid var(--topic-color);border-radius:12px;background:white;padding:19px;color:#253049;transition:transform .16s,box-shadow .16s}.formula-tile:hover{transform:translateY(-3px);box-shadow:0 8px 24px #3429580c;border-color:var(--topic-color)}.tile-meta{display:flex;justify-content:space-between;align-items:start;gap:8px;color:#8a8397;font-size:11px;line-height:1.5}.tile-level{font-size:10px;border-radius:4px;padding:2px 6px;background:#f2eff8;color:#6c558e;white-space:nowrap}.tile-name{font-size:15px;font-weight:600;margin-top:17px;line-height:1.5}.tile-equation{font:22px/1.6 Georgia,serif;margin:16px 0 22px;color:#5a4383;overflow-wrap:anywhere;min-height:36px}.tile-equation sub,.tile-equation sup{font-size:.6em}.tile-foot{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:auto;color:#8c8499;font-size:11px}.tile-foot i{width:6px;height:6px;border-radius:50%;display:inline-block;background:#9e8ab9;margin-right:5px}.tile-foot.has-animation i{background:#71a389}.tile-foot b{color:#7355a2;font-weight:400;font-size:19px}.atlas-scope{color:#8b909c;font-size:12px;line-height:1.8;margin-top:28px;max-width:860px}.no-results{text-align:center;padding:60px 18px;color:#7b728b}#formula-dialog{padding:24px 30px 30px;max-width:740px;width:calc(100% - 32px);max-height:calc(100dvh - 40px);border:1px solid #e1dbe9;border-radius:17px;color:var(--ink);overflow-y:auto}#formula-dialog::backdrop{background:#15142185;backdrop-filter:blur(3px)}.atlas-dialog-top{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:8px}.detail-level{font-size:12px;color:#8a77a3}.atlas-close{flex-shrink:0;background:#f3f0f8;border-radius:50%;width:37px;height:37px;color:#6b5685;font-size:17px}#detail-name{font-size:25px;line-height:1.4;font-weight:600;margin-bottom:17px}#formula-dialog .equation-block{padding:20px}#formula-dialog .standard-equation{font-size:27px}#formula-dialog .symbol-table{font-size:14px}#formula-dialog .symbol-table td,#formula-dialog .symbol-table th{padding:11px 10px}.detail-section{margin:23px 0}.detail-section h3{font-size:14px;font-weight:600;color:#695282;margin:0 0 7px}.detail-section p{font-size:14px;line-height:1.9;color:#697182}.detail-example{padding:17px 19px;background:#f4f6f4;border:1px solid #e3e9e2;border-radius:10px}.detail-example p{font-size:16px;color:#4b6a58;overflow-wrap:anywhere;line-height:1.8}.detail-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.detail-actions a{font-size:13px;text-decoration:none;border:1px solid #d9cee9;border-radius:7px;padding:9px 14px;background:#f3edf9;color:#684898}.detail-actions a:hover{background:#e9def5}.detail-source{display:inline-block;margin-top:20px;color:#94909a;font-size:12px}.nonvisual-note{font-size:12px!important;color:#8a8392!important;margin-top:19px!important}.topic-mechanics{--topic-color:#b6a0d2}.topic-waves{--topic-color:#83b4cc}.topic-electricity{--topic-color:#d6b277}.topic-thermal{--topic-color:#c98d84}.topic-modern{--topic-color:#87b49c}
@media(max-width:900px){.formula-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.atlas-main{padding:28px 22px}.atlas-controls{flex-wrap:wrap}.atlas-controls .atlas-search{flex-basis:100%}.atlas-controls label:not(.atlas-search){flex:1;min-width:0}}
@media(max-width:530px){.atlas-main{padding:24px 16px}.atlas-heading h1{font-size:27px}.atlas-heading>p{font-size:14px}.atlas-controls{padding:14px;gap:12px}.atlas-controls input,.atlas-controls select{font-size:13px}.formula-grid{gap:10px}.formula-tile{padding:13px 11px}.tile-meta{font-size:10px;flex-direction:column;gap:6px}.tile-name{font-size:13px;margin-top:12px}.tile-equation{font-size:18px;margin:13px 0 16px}.tile-foot{font-size:10px;gap:3px}.atlas-results-bar>span{display:none}.atlas-scope{font-size:11px}#formula-dialog{padding:18px;width:calc(100% - 18px);max-height:calc(100dvh - 20px);border-radius:12px}#detail-name{font-size:22px}#formula-dialog .equation-block{padding:13px}#formula-dialog .standard-equation{font-size:22px}#formula-dialog .symbol-table td,#formula-dialog .symbol-table th{padding:9px 5px}.detail-actions{flex-direction:column}.detail-actions a{text-align:center}}
@media(max-width:345px){.formula-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.formula-tile{transition:none}}

.tile-equation{display:flex;align-items:center;flex-wrap:wrap;gap:12px 20px;width:100%;min-height:80px;overflow-x:auto;overflow-y:hidden;overflow-wrap:normal;padding:8px 1px;line-height:normal;font-size:23px;margin:12px 0 18px}.tile-equation .textbook-math{padding:4px 0}.formula-tile{min-height:234px}
@media(max-width:600px){.formula-grid{grid-template-columns:1fr}.formula-tile{padding:19px;min-height:220px}.tile-meta{flex-direction:row;font-size:12px}.tile-name{font-size:16px}.tile-level,.tile-foot{font-size:12px}.tile-equation{font-size:24px;min-height:80px}}