.ldc-tool{font-size:13.5px;color:#1e1b4b}
.ldc-tool *{box-sizing:border-box}
.ldc-row{margin-bottom:14px}
.ldc-label{display:block;font-size:12px;font-weight:600;color:#4b5563;margin-bottom:6px}
.ldc-iw{position:relative;display:flex;align-items:center}
.ldc-input{width:100%;height:42px;padding:0 14px;border:1.5px solid #e0e7ff;border-radius:10px;font-size:15px;font-weight:600;color:#1e1b4b;background:#fafaff;transition:border-color .15s,box-shadow .15s,background .15s;outline:none}
.ldc-input::placeholder{color:#c7c9e0;font-weight:500}
.ldc-input:focus{border-color:#6366f1;box-shadow:0 0 0 3px rgba(99,102,241,.12);background:#fff}
.ldc-input.err{border-color:#ef4444;background:#fff}
.ldc-errmsg{display:none;font-size:11px;color:#ef4444;margin-top:4px}
.ldc-errmsg.show{display:block}
.ldc-div-symbol{display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;color:#c7d2fe;padding:0 4px;height:42px;flex-shrink:0}
.ldc-pair{display:grid;grid-template-columns:1fr 32px 1fr;align-items:start;gap:0}
.ldc-adv-toggle{display:flex;align-items:center;gap:6px;background:none;border:none;padding:0;font-size:12px;font-weight:600;color:#6366f1;cursor:pointer;margin-bottom:14px}
.ldc-adv-toggle svg{transition:transform .2s}
.ldc-adv-toggle.open svg{transform:rotate(180deg)}
.ldc-adv{display:none}
.ldc-adv.open{display:block}
.ldc-select{width:100%;height:42px;padding:0 36px 0 14px;border:1.5px solid #e0e7ff;border-radius:10px;font-size:15px;font-weight:600;color:#1e1b4b;background:#fafaff;appearance:none;outline:none;cursor:pointer}
.ldc-select:focus{border-color:#6366f1;box-shadow:0 0 0 3px rgba(99,102,241,.12)}
.ldc-arrow{position:absolute;right:14px;width:0;height:0;border:5px solid transparent;border-top-color:#9ca3af;pointer-events:none;margin-top:2px}
.ldc-btn{width:100%;height:44px;margin-top:6px;background:#4338ca;color:#fff;border:none;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s,transform .1s}
.ldc-btn:hover{background:#3730a3}
.ldc-btn:active{transform:scale(.98)}
.ldc-results{margin-top:16px}
.ldc-main-card{background:#f8f9ff;border:1.5px solid #e0e7ff;border-radius:10px;padding:14px;margin-bottom:10px;transition:border-color .2s,background .2s}
.ldc-main-card.live{background:#fff;border-color:#4338ca}
.ldc-main-label{font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:#6b7280;margin-bottom:10px}
.ldc-equation{font-size:17px;font-weight:700;color:#1e1b4b;letter-spacing:.01em;word-break:break-all}
.ldc-equation span{color:#4338ca}
.ldc-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.ldc-card{background:#f8f9ff;border:1.5px solid #e0e7ff;border-radius:10px;padding:12px 10px;transition:border-color .2s,background .2s}
.ldc-card.live{background:#fff;border-color:#4338ca}
.ldc-clabel{font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:#6b7280;margin-bottom:8px}
.ldc-cval{font-size:20px;font-weight:700;color:#1e1b4b;line-height:1}
.ldc-csub{font-size:11px;color:#9ca3af;margin-top:4px}
.ldc-steps-card{background:#f8f9ff;border:1.5px solid #e0e7ff;border-radius:10px;padding:14px;transition:border-color .2s,background .2s}
.ldc-steps-card.live{background:#fff;border-color:#4338ca}
.ldc-steps-label{font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:#6b7280;margin-bottom:12px}
.ldc-step{display:grid;grid-template-columns:24px 1fr;gap:8px;margin-bottom:10px;align-items:start}
.ldc-step:last-child{margin-bottom:0}
.ldc-step-num{width:22px;height:22px;background:#eef2ff;border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#4338ca;flex-shrink:0;margin-top:1px}
.ldc-step-title{font-size:12px;font-weight:700;color:#1e1b4b;margin-bottom:2px}
.ldc-step-detail{font-size:12px;color:#6b7280;font-family:monospace;background:#f1f3ff;padding:4px 8px;border-radius:6px;display:inline-block;margin-top:2px}
.ldc-placeholder{display:inline-block;width:24px;height:2px;background:#4338ca;border-radius:2px;vertical-align:middle}
.ldc-note{font-size:11.5px;line-height:1.5;color:#9ca3af;margin:14px 0 0;text-align:center}