:root{--c-bg: #0b0b0b;--c-surface: #111;--c-raised: #1a1a1a;--c-border: #242424;--c-border-focus: #363636;--c-accent: #0bcdf3;--c-accent-hover: #3dd9ff;--c-accent-dim: rgba(11, 205, 243, .1);--c-text: #d4d4d4;--c-text-muted: #606060;--c-text-dim: #363636;--c-success-text: #4db87a;--c-success-bg: rgba(77, 184, 122, .08);--c-success-border: rgba(77, 184, 122, .25);--c-warn-text: #e0a443;--c-warn-bg: rgba(224, 164, 67, .08);--c-warn-border: rgba(224, 164, 67, .25);--c-err-text: #b04444;--c-err-bg: rgba(176, 68, 68, .08);--c-err-border: rgba(176, 68, 68, .25);--f: "Inter", system-ui, -apple-system, sans-serif;--r: 6px;--t: .12s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{background:var(--c-bg);color:var(--c-text);font-family:var(--f);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}.calc-page{padding:18px 20px 28px;max-width:500px;margin:0 auto}.field{margin-bottom:10px}.field label{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--c-text-muted);margin-bottom:5px}.field select,.field input[type=number]{width:100%;background:var(--c-raised);border:1px solid var(--c-border);border-radius:var(--r);padding:8px 10px;font-size:13px;color:var(--c-text);font-family:var(--f);outline:none;transition:border-color var(--t)}.field select:focus,.field input[type=number]:focus{border-color:var(--c-accent)}.field select{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23606060' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:28px}.field input[type=number]::-webkit-inner-spin-button,.field input[type=number]::-webkit-outer-spin-button{opacity:.4}.row-3-1{display:grid;grid-template-columns:3fr 1fr;gap:8px}.row-1-1{display:grid;grid-template-columns:1fr 1fr;gap:8px}.radio-group{display:flex;gap:6px}.radio-opt{flex:1;display:flex;align-items:center;justify-content:center;padding:7px 10px;background:var(--c-raised);border:1px solid var(--c-border);border-radius:var(--r);cursor:pointer;font-size:12px;font-weight:600;color:var(--c-text-muted);transition:background var(--t),border-color var(--t),color var(--t);-webkit-user-select:none;user-select:none}.radio-opt.active{background:var(--c-accent-dim);border-color:var(--c-accent);color:var(--c-accent)}.static-val{width:100%;padding:8px 10px;background:transparent;border:1px solid var(--c-border);border-radius:var(--r);font-size:13px;color:var(--c-text-muted)}.divider{border:none;border-top:1px solid var(--c-border);margin:14px 0}.result-box{margin-top:14px;padding:14px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r);font-size:13px;line-height:1.75}.result-box.ok{border-color:var(--c-success-border);background:var(--c-success-bg)}.result-box.warn{border-color:var(--c-warn-border);background:var(--c-warn-bg)}.result-box.info{border-color:var(--c-accent);background:var(--c-accent-dim)}.result-line{margin-bottom:4px}.result-main{font-weight:600;font-size:14px;color:var(--c-text)}.result-sub{font-size:12px;color:var(--c-text-muted)}.result-meta{margin-top:10px;padding-top:10px;border-top:1px solid var(--c-border);font-size:11px;color:var(--c-text-muted);line-height:1.6}.inline-notice{padding:8px 10px;border-radius:var(--r);font-size:12px;margin-bottom:10px}.inline-notice.loading{background:var(--c-raised);color:var(--c-text-muted);border:1px solid var(--c-border)}.inline-notice.error{background:var(--c-err-bg);color:var(--c-err-text);border:1px solid var(--c-err-border)}