:root{--navy:#0b1d38;--blue:#1169c8;--green:#0b9965;--line:#d7e1ec;--paper:#eef3f8;--ink:#10243e;--muted:#61738b}*{box-sizing:border-box}html{font-family:Inter,"Segoe UI",Arial,sans-serif;background:var(--paper);color:var(--ink)}body{margin:0;min-width:320px}button,input,select{font:inherit}button{border:1px solid #c7d4e4;background:#fff;color:#173251;border-radius:8px;padding:9px 13px;font-weight:700;cursor:pointer}.topbar{min-height:68px;background:var(--navy);display:flex;align-items:center;justify-content:space-between;padding:10px 28px;gap:18px}.brand{display:flex;align-items:center;color:#fff;text-decoration:none;font-weight:800}.brand img{width:42px;height:42px;border-radius:9px;background:#fff;margin-right:11px}.brand small{display:block;color:#71baff;font-size:10px;letter-spacing:1.7px}.top-actions{display:flex;gap:8px}.top-actions button{background:#142b4b;color:#fff;border-color:#315274}.demo{background:linear-gradient(135deg,#07885b,#0aaf78)!important;color:#fff!important;border:0!important}.tabs{display:flex;overflow:auto;background:#fff;border-bottom:1px solid var(--line);padding:0 max(18px,calc((100vw - 1500px)/2))}.tabs button{border:0;border-radius:0;min-width:170px;padding:13px 18px;border-bottom:3px solid transparent}.tabs button.active{color:var(--blue);border-bottom-color:var(--blue);background:#f3f8ff}.tabs b,.tabs span{display:block}.tabs span{font-size:10px;color:#66788e;margin-top:3px}main{max-width:1500px;margin:auto;padding:18px}.heading{display:flex;justify-content:space-between;align-items:center;padding:4px 5px 17px}.heading span,.card small{font-size:10px;color:var(--blue);font-weight:850;letter-spacing:1.4px}.heading h1{margin:3px 0 4px;font-size:25px}.heading p{margin:0;color:var(--muted)}.heading>b{font-size:10px;color:#087653;background:#dcf5e9;border:1px solid #a7dfc8;border-radius:20px;padding:8px 11px}.work{display:grid;grid-template-columns:minmax(540px,1.25fr) minmax(400px,.75fr);gap:14px}.card{background:#fff;border:1px solid var(--line);border-radius:11px;box-shadow:0 3px 12px #1d395d0c;overflow:hidden}.card>header,dialog>header{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;border-bottom:1px solid var(--line)}.card h2,dialog h2{font-size:16px;margin:2px 0}.card header>span{font-size:10px;color:#4f6680}.scalar-grid{padding:14px;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.field label{display:block;font-size:10px;color:#52667e;font-weight:750;margin-bottom:4px}.field input,.field select{width:100%;border:1px solid #bfcddd;border-radius:6px;padding:8px;background:#fff}.table-edit{overflow:auto;border-top:1px solid var(--line)}table{border-collapse:collapse;width:100%;font-size:11px;white-space:nowrap}th,td{border-bottom:1px solid #e2e8f0;padding:7px 8px;text-align:right}th{background:#eaf1f8;color:#29415e;position:sticky;top:0;z-index:1}th:first-child,td:first-child{text-align:left}.table-edit input{width:76px;padding:6px;border:1px solid #c9d5e3;border-radius:5px}.main-actions{padding:14px;display:grid;grid-template-columns:1fr 1fr;gap:10px}.main-actions button{padding:12px}.calculate{background:linear-gradient(135deg,#087bad,#176ddb);color:#fff;border:0}.model-card canvas{display:block;width:100%;height:430px;background:linear-gradient(#fbfdff,#f1f6fb)}.model-card p{margin:0;padding:9px 14px;color:var(--muted);font-size:10px;border-top:1px solid var(--line)}.results-card{margin-top:14px}.results-card .table-wrap{max-height:380px;overflow:auto}.results-card td{font-variant-numeric:tabular-nums;white-space:pre;font-family:"Cascadia Mono",Consolas,monospace;line-height:1.55}.results-card td:first-child{font-family:Inter,"Segoe UI",Arial,sans-serif;font-weight:700;white-space:normal}.help-note{margin:0;padding:9px 16px;background:#eff7ff;color:#4a627c;font-size:11px}.results-card header #status{border-radius:20px;background:#f0f4f8;padding:6px 9px}dialog{width:min(1200px,95vw);height:90vh;padding:0;border:0;border-radius:12px;box-shadow:0 24px 70px #07162b66}dialog::backdrop{background:#07162bb8}dialog header button{font-size:22px;padding:4px 11px}dialog iframe{width:100%;height:calc(100% - 104px);border:0;background:#fff}#toast{position:fixed;right:22px;bottom:22px;background:#0c243f;color:#fff;padding:12px 16px;border-radius:8px;opacity:0;transform:translateY(10px);transition:.2s;pointer-events:none;font-size:12px}#toast.show{opacity:1;transform:none}@media(max-width:850px){.topbar{align-items:flex-start;padding:12px}.top-actions{overflow:auto}.top-actions button{white-space:nowrap}.work{grid-template-columns:1fr}.scalar-grid{grid-template-columns:1fr 1fr}.heading{display:block}.heading>b{display:inline-block;margin-top:10px}.model-card canvas{height:350px}main{padding:12px}}@media(max-width:520px){.scalar-grid{grid-template-columns:1fr}.main-actions{grid-template-columns:1fr}.brand span{font-size:13px}}