:root{color-scheme:light dark;font-family:Inter,SF Pro Text,Helvetica Neue,sans-serif;line-height:1.5;font-weight:400;--bg: #f5f6f8;--surface: #ffffff;--surface-2: #f0f2f5;--border: #d9dde3;--text: #101218;--muted: #5c6470;--accent: #4c6fff;--accent-weak: #e7ecff;--success: #2e8b57;--danger: #d14343;--success-bg: rgba(46, 139, 87, .12);--success-border: rgba(46, 139, 87, .35);--danger-bg: rgba(209, 67, 67, .12);--danger-border: rgba(209, 67, 67, .35);--shadow: 0 12px 30px rgba(15, 23, 42, .08)}@media (prefers-color-scheme: dark){:root{--bg: #0f1115;--surface: #141822;--surface-2: #1a1f2b;--border: #2a3240;--text: #f1f5fb;--muted: #a4adbb;--accent: #7ea2ff;--accent-weak: rgba(126, 162, 255, .15);--success: #4fc08d;--danger: #ff6b6b;--success-bg: rgba(79, 192, 141, .18);--success-border: rgba(79, 192, 141, .45);--danger-bg: rgba(255, 107, 107, .18);--danger-border: rgba(255, 107, 107, .45);--shadow: 0 14px 30px rgba(3, 6, 12, .35)}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}h1,h2{margin:0 0 12px;font-weight:600}h1{font-size:2rem}h2{font-size:1.2rem}p{margin:0 0 12px;color:var(--muted)}ul{margin:0;padding-left:18px;color:var(--muted)}li{margin-bottom:8px}.app{max-width:980px;margin:32px auto 48px;padding:0 20px}.hero{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:24px}.eyebrow{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}.subhead{max-width:520px}.status{display:flex;align-items:center}.pill{background:var(--surface);border:1px solid var(--border);padding:6px 12px;border-radius:999px;font-size:.85rem;color:var(--muted);box-shadow:var(--shadow)}.pill--ok{color:var(--success);border-color:var(--success-border);background:var(--success-bg)}.pill--error{color:var(--danger);border-color:var(--danger-border);background:var(--danger-bg)}.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-bottom:24px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px 22px;box-shadow:var(--shadow)}.card.hint{background:linear-gradient(140deg,var(--surface),var(--surface-2))}.legend{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:16px}.legend-title{display:block;font-weight:600;margin-bottom:4px;color:var(--text)}.legend-desc{color:var(--muted);font-size:.9rem}.form .field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}label{font-weight:500}input[type=number]{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:10px 12px;color:var(--text);font-size:1rem;transition:border-color .2s ease,box-shadow .2s ease}input[type=number]:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-weak)}.checkbox{display:flex;align-items:center;gap:12px;color:var(--text)}.checkbox input{width:18px;height:18px;accent-color:var(--accent)}.field-help{font-size:.85rem;color:var(--muted)}.divider{height:1px;background:var(--border);margin:16px 0}.result-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}.total{font-size:2rem;font-weight:700;color:var(--text)}.result p{margin:0}.breakdown{display:grid;gap:10px}.row{display:flex;justify-content:space-between;font-size:.95rem;color:var(--text)}.note{font-size:.85rem;color:var(--muted);margin-top:16px}.warning{margin-top:16px;padding:10px 12px;border-radius:10px;background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger-border);font-size:.9rem}@media (max-width: 900px){.hero{flex-direction:column}.info-grid,.grid,.legend{grid-template-columns:1fr}}