.sci-calculator{max-width:700px;margin:20px auto 0;border:1px solid #e3e0d8;background:#fffdf9;padding:20px;border-radius:21px}
.sci-topline{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:15px;flex-wrap:wrap}.sci-mode-label,.sci-label{font-weight:750;font-size:13px;color:#4e5a52}
.sci-mode{display:flex;border:1px solid #dccfbb;border-radius:12px;overflow:hidden;background:#f7f2e9}.sci-mode button{border:0;background:transparent;padding:8px 11px;color:#536057;font-size:13px;font-weight:700}.sci-mode button.active{background:#18201d;color:#fff}
.sci-label{display:block;margin:10px 0 6px}.sci-calculator input{width:100%;border:1px solid #d4d6d0;border-radius:11px;padding:14px 13px;font-size:19px;line-height:1.4;color:#27342d;background:#fff;min-height:52px}
.sci-help{margin:8px 0 10px;color:#657269;font-size:12px}.sci-help button{border:0;background:none;text-decoration:underline;color:#866b46;padding:0;font-size:12px}
.sci-screen{border-radius:12px;background:#19201e;color:#fff;padding:16px 18px;text-align:right;margin-bottom:15px;min-height:112px;overflow-wrap:anywhere}.sci-screen small{font-size:12px;color:#d4c4a5}.sci-screen output{display:block;font-family:Georgia,serif;font-size:clamp(30px,6vw,42px);line-height:1.3;color:#fff;overflow-wrap:anywhere}.sci-screen #sci-error{display:block;font-size:12px;color:#f8cabf;min-height:16px}
.sci-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.sci-grid button{background:#fff;border:1px solid #e6e1d9;border-radius:10px;min-width:0;min-height:48px;display:grid;place-items:center;font-size:18px;font-weight:650;color:#202824;line-height:1.1;padding:3px 0;touch-action:manipulation}.sci-grid button.sci-util{background:#f4eee6;color:#796039}.sci-grid button.sci-op{background:#f4eee6;color:#8a693c}.sci-grid button.sci-science{background:#f3f4f0;color:#405247;font-size:15px}.sci-grid button.sci-equals{background:#19201e;color:white;font-size:22px}.sci-grid button:active{transform:scale(.97)}
.sci-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.sci-actions button{font-size:13px;padding:9px 14px;min-height:40px}.sci-history{margin-top:20px;border-top:1px solid #ede5d9;padding-top:11px}.sci-history h3{font-size:16px;color:#27332b;margin:0 0 8px}.sci-history ol{margin:0;padding-left:22px;color:#5f6c61;font-size:13px}.sci-history li{margin:7px 0;word-break:break-word}.sci-history li.sci-empty{list-style:none;margin-left:-22px}
@media(max-width:480px){.sci-calculator{padding:12px;border-radius:12px}.sci-grid{gap:5px}.sci-grid button{min-height:44px;border-radius:8px;font-size:17px}.sci-grid button.sci-science{font-size:13px}.sci-mode button{font-size:12px}.sci-screen{padding:14px}}