:root {
--bg: #f4f8fb;
--surface: #ffffff;
--surface-2: #eef4fa;
--text: #0f172a;
--muted: #475569;
--subtle: #64748b;
--border: #dbe4ef;
--primary: #0ea5e9;
--primary-600: #0284c7;
--primary-700: #0369a1;
--accent: #10b981;
--warn: #d97706;
--danger: #dc2626;
--shadow: 0 1px 2px rgba(15,23,42,0.06), 0 6px 20px rgba(15,23,42,0.06);
--radius: 14px;
--radius-sm: 8px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
background: var(--bg);
color: var(--text);
line-height: 1.55;
font-size: 16px;
}

.container {
max-width: 1080px;
margin: 0 auto;
padding: 0 20px;
}

.site-header .container {
display: flex;
align-items: center;
justify-content: space-between;
gap: 16px;
padding-top: 14px;
padding-bottom: 14px;
}

.brand {
display: inline-flex;
align-items: center;
gap: 10px;
font-weight: 700;
font-size: 1rem;
color: var(--text);
text-decoration: none;
}

.brand-mark {
display: inline-flex;
align-items: center;
justify-content: center;
background: var(--primary);
border-radius: 8px;
padding: 4px;
}

.brand-text { letter-spacing: 0.2px; }

.site-nav {
display: flex;
gap: 16px;
flex-wrap: wrap;
}

.site-nav a {
color: var(--muted);
text-decoration: none;
font-size: 0.95rem;
}

.site-nav a:hover { color: var(--primary-700); }

main { padding-top: 8px; padding-bottom: 48px; }

section { margin-top: 36px; margin-bottom: 8px; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 12px; }
h1 { font-size: 1.8rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 12px; color: var(--text); }
.lede { color: var(--muted); max-width: 64ch; }

.visually-hidden {
position: absolute;
width: 1px; height: 1px;
padding: 0; margin: -1px;
overflow: hidden; clip: rect(0 0 0 0);
white-space: nowrap; border: 0;
}

.result-card {
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: 20px;
box-shadow: var(--shadow);
}

.result-head {
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
gap: 12px;
margin-bottom: 12px;
}

.result-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.controls {
display: grid;
gap: 16px;
grid-template-columns: repeat(2, 1fr);
margin-top: 12px;
}

.control { display: flex; flex-direction: column; gap: 6px; }
.control label { font-weight: 600; font-size: 0.95rem; }

.chips {
display: flex;
flex-wrap: wrap;
gap: 8px;
}

.chip {
background: var(--surface-2);
color: var(--text);
border: 1px solid var(--border);
border-radius: 999px;
padding: 8px 12px;
font-size: 0.95rem;
cursor: pointer;
transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.chip:hover { border-color: var(--primary); color: var(--primary-700); }
.chip[aria-pressed="true"],
.chip.active {
background: var(--primary);
color: #fff;
border-color: var(--primary-700);
}

select, input[type="number"] {
width: 100%;
padding: 10px 12px;
border-radius: var(--radius-sm);
border: 1px solid var(--border);
background: var(--surface);
font-size: 1rem;
color: var(--text);
appearance: none;
-moz-appearance: none;
}

select {
background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
background-position: calc(100% - 16px) center, calc(100% - 11px) center;
background-size: 5px 5px, 5px 5px;
background-repeat: no-repeat;
}

.btn {
background: var(--surface-2);
color: var(--text);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
padding: 8px 12px;
font-size: 0.95rem;
cursor: pointer;
transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:hover { border-color: var(--primary); color: var(--primary-700); }
.btn.primary {
background: var(--primary);
color: #fff;
border-color: var(--primary-700);
}
.btn.primary:hover { background: var(--primary-600); }

.result-body { margin-top: 8px; }

.result-window {
font-size: 1.2rem;
font-weight: 700;
color: var(--primary-700);
margin-bottom: 12px;
}

.result-grid {
display: grid;
gap: 12px;
grid-template-columns: repeat(2, 1fr);
margin-bottom: 12px;
}

.result-grid > div {
background: var(--surface-2);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
padding: 10px 12px;
}

.result-grid .label {
display: block;
font-size: 0.8rem;
color: var(--subtle);
text-transform: uppercase;
letter-spacing: 0.04em;
margin-bottom: 4px;
}

.result-note {
font-size: 0.92rem;
color: var(--muted);
margin-top: 4px;
}

.chart-wrap {
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: 20px;
}

.table-scroll { overflow-x: auto; }

table.chart {
border-collapse: collapse;
width: 100%;
min-width: 640px;
font-size: 0.95rem;
}

table.chart th, table.chart td {
border-bottom: 1px solid var(--border);
padding: 10px 12px;
text-align: left;
}

table.chart thead th {
background: var(--surface-2);
font-weight: 600;
}

table.chart tbody tr:nth-child(even) { background: #fafcfe; }

.chart-actions {
display: flex;
gap: 12px;
flex-wrap: wrap;
margin-top: 12px;
}

.scenario-list {
padding-left: 18px;
display: grid;
gap: 16px;
}

.scenario-list h3 { color: var(--primary-700); }

.mistake-list {
list-style: disc;
padding-left: 22px;
display: grid;
gap: 10px;
}

.content-block {
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: 20px;
}

.content-block ul {
padding-left: 22px;
display: grid;
gap: 6px;
}

.site-footer {
margin-top: 36px;
color: var(--muted);
font-size: 0.9rem;
border-top: 1px solid var(--border);
padding-top: 16px;
}

.site-footer a { color: var(--primary-700); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

@media (max-width: 720px) {
h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }
.controls { grid-template-columns: 1fr; }
.result-grid { grid-template-columns: 1fr; }
.site-header .container { flex-direction: column; align-items: flex-start; }
.result-head { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
.container { padding: 0 14px; }
.result-card, .chart-wrap, .content-block { padding: 14px; }
.chip { padding: 7px 10px; font-size: 0.9rem; }
}

@media print {
body { background: #fff; }
.site-nav, .result-actions, .chart-actions, .site-header { display: none; }
section { page-break-inside: avoid; }
table.chart { min-width: 0; }
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}