.arc{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-ring: #3b82f6;--color-primary-tint: #eff6ff;--color-surface: #ffffff;--color-surface-muted: #f9fafb;--color-border: #e5e7eb;--color-border-input: #d1d5db;--color-text-heading: #111827;--color-text-body: #374151;--color-text-secondary: #4b5563;--color-text-muted: #6b7280;--gradient-hero: linear-gradient(to right, #eef2ff, #ffffff, #fdf2f8);--radius-input: .5rem;--radius-card: 1rem;--shadow-card: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-raised: 0 10px 15px -3px rgb(0 0 0 / .1);color:var(--color-text-body);background:#fcfcfd;line-height:1.5;-webkit-font-smoothing:antialiased}.arc *{box-sizing:border-box}.arc-container{max-width:72rem;margin-inline:auto;padding-inline:1rem;padding-bottom:1rem}@media (min-width: 640px){.arc-container{padding-inline:1.5rem}}@media (min-width: 1024px){.arc-container{padding-inline:2rem}}.arc .card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:1.5rem}.arc .card--raised{box-shadow:var(--shadow-raised)}.arc .btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:var(--color-primary);color:#fff;font-weight:600;padding:.625rem 1.5rem;border-radius:var(--radius-input);border:0;cursor:pointer;text-decoration:none;transition:.15s;font-size:1rem}.arc .btn:hover{background:var(--color-primary-hover)}.arc .btn:focus-visible{outline:2px solid var(--color-primary-ring);outline-offset:2px}.arc .btn--full{width:100%;margin-top:1.25rem}.arc .btn--sm{padding:.4rem .85rem;font-size:.85rem}.arc .btn--ghost{background:var(--color-surface);color:var(--color-text-body);border:1px solid var(--color-border-input)}.arc .btn--ghost:hover{background:var(--color-surface-muted)}.arc label.field{display:block;font-size:.875rem;font-weight:600;color:var(--color-text-body);margin-bottom:.35rem}.arc .input,.arc select.input{width:100%;padding:.6rem .75rem;border:1px solid var(--color-border-input);border-radius:var(--radius-input);background:var(--color-surface);color:var(--color-text-heading);font-size:1rem;font-family:inherit}.arc .input:focus,.arc select.input:focus{outline:2px solid var(--color-primary-ring);outline-offset:1px;border-color:var(--color-primary-ring)}.arc .input.num{text-align:center;font-variant-numeric:tabular-nums;font-weight:600}.arc .hint{margin:.3rem 0 0;font-size:.78rem;color:var(--color-text-muted)}.arc .hint--block{margin:0 0 1rem}.arc .field-group{margin-bottom:1.15rem}.arc .ratio-row{display:flex;align-items:center;gap:.75rem;max-width:20rem}.arc .ratio-row .input.num{flex:1 1 0;min-width:0}.arc .colon{font-size:1.4rem;font-weight:700;color:var(--color-text-muted);flex:0 0 auto}.arc .modes{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap}.arc .mode{flex:1 1 0;min-width:8rem;font-size:.92rem;font-weight:600;padding:.55rem 1rem;border-radius:999px;background:var(--color-surface);color:var(--color-text-secondary);border:1px solid var(--color-border-input);cursor:pointer;transition:.15s}.arc .mode:hover{background:var(--color-surface-muted)}.arc .mode:focus-visible{outline:2px solid var(--color-primary-ring);outline-offset:2px}.arc .mode.is-active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.arc .subhead{font-size:1rem;font-weight:700;color:var(--color-text-heading);margin:0 0 .25rem}.arc .grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 1rem}@media (max-width: 520px){.arc .grid2{grid-template-columns:1fr}}.arc .err{margin:.25rem 0 0;padding:.6rem .8rem;font-size:.8rem;line-height:1.4;background:#fffbeb;color:#b45309;border:1px solid #fde68a;border-radius:var(--radius-input)}.arc .btn-row{margin-top:1.25rem}.arc h2.panel{font-size:1.25rem;font-weight:700;color:var(--color-text-heading);margin:0 0 1.25rem}.arc h2.section{font-size:1.5rem;font-weight:700;color:var(--color-text-heading);letter-spacing:-.01em;margin:0}.arc .muted{color:var(--color-text-muted)}.arc .layout{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-top:2rem}@media (min-width: 960px){.arc .layout{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);align-items:start}.arc .side-card{position:sticky;top:1.5rem}}.arc .empty{text-align:center;padding:2.5rem 1rem}.arc .empty__icon{font-size:2.5rem;margin-bottom:.75rem}.arc .empty p{margin:0;color:var(--color-text-muted);font-size:.95rem;max-width:22rem;margin-inline:auto}.arc .verdict{text-align:center;padding:1.25rem 1rem;margin-bottom:1.25rem;background:var(--color-primary-tint);border:1px solid #bfdbfe;border-radius:var(--radius-card)}.arc .verdict__label{font-size:.72rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--color-primary-hover)}.arc .verdict__value{font-size:1.9rem;font-weight:800;color:var(--color-text-heading);margin:.2rem 0 .3rem;letter-spacing:-.01em;font-variant-numeric:tabular-nums}.arc .verdict__sub{font-size:.88rem;color:var(--color-text-secondary)}.arc .rows{list-style:none;margin:0;padding:0}.arc .rows li{display:flex;align-items:baseline;justify-content:space-between;gap:.5rem;font-size:.9rem;padding:.55rem 0;border-top:1px dashed var(--color-border)}.arc .rows li:first-child{border-top:0}.arc .rows li span{color:var(--color-text-muted)}.arc .rows li b{color:var(--color-text-heading);font-weight:700;white-space:nowrap;font-variant-numeric:tabular-nums}.arc .rows-eff b{color:var(--color-primary)}.arc .copy-note{text-align:center;font-size:.82rem;color:#047857;margin:.6rem 0 0;font-weight:600}.arc .how{margin-top:3.25rem}.arc .how h2.section{text-align:center}.arc .how__lead{text-align:center;color:var(--color-text-secondary);margin:.4rem auto 1.75rem;max-width:40rem}.arc .steps{display:grid;grid-template-columns:1fr;gap:1.1rem}@media (min-width: 720px){.arc .steps{grid-template-columns:repeat(3,1fr)}}.arc .step{padding:1.5rem 1.25rem}.arc .step__n{width:2.5rem;height:2.5rem;margin:0 0 .9rem;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;color:var(--color-primary);background:var(--color-primary-tint);border:1px solid #bfdbfe}.arc .step h3{font-size:1.05rem;font-weight:700;color:var(--color-text-heading);margin:0 0 .4rem}.arc .step p{margin:0;font-size:.9rem;color:var(--color-text-secondary)}.arc .facts{margin-top:1.75rem}.arc .facts>h3{font-size:1.1rem;font-weight:700;color:var(--color-text-heading);margin:0 0 1.1rem}.arc .ratio-table{width:100%;border-collapse:collapse;font-size:.85rem}.arc .ratio-table th{text-align:left;font-weight:700;color:var(--color-text-secondary);padding:.4rem .5rem;border-bottom:2px solid var(--color-border);font-size:.78rem;text-transform:uppercase;letter-spacing:.03em}.arc .ratio-table td{padding:.45rem .5rem;border-bottom:1px solid var(--color-border);color:var(--color-text-body)}.arc .ratio-table td:first-child{font-weight:700;color:var(--color-text-heading);white-space:nowrap}.arc .ratio-table td:nth-child(2){font-variant-numeric:tabular-nums}.arc .facts__fine{font-size:.82rem;color:var(--color-text-muted);margin:1.25rem 0 0;padding-top:1rem;border-top:1px solid var(--color-border);line-height:1.55}.arc .facts__fine a{color:var(--color-primary);font-weight:600;text-decoration:none}.arc .facts__fine a:hover{text-decoration:underline}.arc .privacy-line{margin-top:1.75rem;display:flex;align-items:center;gap:1rem;background:#ecfdf5;border:1px solid #a7f3d0}.arc .privacy-line__icon{font-size:1.5rem;flex:0 0 auto}.arc .privacy-line strong{color:#065f46}.arc .privacy-line p{margin:0;color:#047857;font-size:.95rem}.arc .foot{margin:2.5rem 0 1rem;padding-top:1.25rem;border-top:1px solid var(--color-border);text-align:center}.arc .foot p{margin:0;font-size:.85rem}