.watco-buoyancy-tool{--wbt-bg:#f3f5f7;--wbt-panel:#fff;--wbt-card:#f7f9fb;--wbt-line:#dbe2ea;--wbt-text:#25364c;--wbt-muted:#66809c;--wbt-blue:#126dbf;--wbt-blue-dark:#075ba8;--wbt-pass:#18794e;--wbt-fail:#b42318;--wbt-review:#9a6700;background:var(--wbt-bg);color:var(--wbt-text);font-family:Inter,Segoe UI,Arial,sans-serif;max-width:900px;padding:28px 30px 36px}.watco-buoyancy-tool,.watco-buoyancy-tool *,.watco-buoyancy-tool :after,.watco-buoyancy-tool :before{box-sizing:border-box}.watco-buoyancy-tool [hidden]{display:none!important}.wbt-header h2{font-size:24px;font-weight:800;letter-spacing:0;line-height:1.2;margin:0 0 10px}.wbt-header p{color:var(--wbt-muted);font-size:14px;line-height:1.5;margin:0 0 26px}.wbt-card{background:var(--wbt-panel);border:1px solid var(--wbt-line);border-radius:8px;padding:18px 22px 22px;position:relative}.wbt-card-head{position:absolute;right:18px;top:14px;z-index:1}.wbt-section-title{color:#506985;font-size:12px;font-weight:800;text-transform:uppercase}.wbt-clear{background:transparent;border:1px solid var(--wbt-line);border-radius:6px;color:var(--wbt-blue);cursor:pointer;font-size:13px;font-weight:800;padding:7px 12px}.wbt-form-stack{display:grid;gap:16px}.wbt-row{align-items:end;display:grid;gap:14px;grid-template-columns:170px minmax(0,1fr)}.wbt-label{color:var(--wbt-text);font-size:13px;font-weight:800;padding-bottom:9px}.wbt-entry{align-items:end;display:flex;flex-wrap:wrap;gap:8px}.wbt-num,.wbt-shape,.wbt-text-input{background:transparent;border:0;border-bottom:1px solid #2f3f50;border-radius:0;color:var(--wbt-text);font-size:15px;min-height:38px;outline:none;padding:8px 2px}.wbt-text-input{text-align:left;width:min(100%,340px)}.wbt-num{text-align:center;width:82px}.wbt-shape{width:150px}.wbt-num:focus,.wbt-shape:focus,.wbt-text-input:focus{border-bottom-color:var(--wbt-blue);box-shadow:0 1px 0 var(--wbt-blue)}.wbt-num::placeholder{color:var(--wbt-muted);opacity:.7;text-align:center}.wbt-unit{color:var(--wbt-muted);font-size:12px;font-weight:800;padding-bottom:9px}.wbt-actions{display:flex;gap:10px;margin:24px 0 14px}.wbt-pdf,.wbt-primary{background:var(--wbt-blue);border:1px solid var(--wbt-blue);border-radius:6px;color:#fff;cursor:pointer;font-size:14px;font-weight:800;min-height:42px;padding:0 18px}.wbt-pdf:hover,.wbt-primary:hover{background:var(--wbt-blue-dark)}.wbt-notes,.wbt-result{background:var(--wbt-card);border:1px solid var(--wbt-line);border-radius:8px;padding:16px}.wbt-result{display:grid;gap:14px}.wbt-result-kicker{font-size:14px;font-weight:800;margin-bottom:6px}.wbt-result-message{font-size:15px;line-height:1.5}.wbt-result[data-result-state=pass] .wbt-result-kicker,.wbt-result[data-result-state=pass] .wbt-result-message{color:var(--wbt-pass)}.wbt-result[data-result-state=fail] .wbt-result-kicker,.wbt-result[data-result-state=fail] .wbt-result-message{color:var(--wbt-fail)}.wbt-result[data-result-state=review] .wbt-result-kicker,.wbt-result[data-result-state=review] .wbt-result-message{color:var(--wbt-review)}.wbt-result-metrics{display:flex;flex-wrap:wrap;gap:10px}.wbt-result-metrics div{background:#fff;border:1px solid var(--wbt-line);border-radius:8px;min-width:190px;padding:12px}.wbt-result-metrics span{color:var(--wbt-muted);display:block;font-size:12px;font-weight:800;margin-bottom:6px}.wbt-result-metrics strong{font-size:18px;line-height:1.2}.wbt-pdf{justify-self:start}.wbt-notes{margin-top:10px}.wbt-notes .wbt-section-title{margin-bottom:10px}.wbt-notes ul{color:var(--wbt-text);font-size:13px;line-height:1.7;margin:0;padding-left:18px}@media (max-width:760px){.watco-buoyancy-tool{padding:22px 16px 28px}.wbt-card{padding:18px}.wbt-card-head{display:flex;justify-content:flex-end;margin-bottom:10px;position:static}.wbt-row{gap:6px;grid-template-columns:1fr}.wbt-label{padding-bottom:0}}