*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #fffbeb; --surface: #fff; --surface2: #fffbeb;
  --border: #fde68a; --accent: #d97706; --accent2: #b45309;
  --accent-light: #fffbeb; --text: #451a03; --muted: #92400e; --label: #92400e;
  --success: #16a34a; --danger: #dc2626; --new: #4f46e5; --old: #d97706;
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; font-size: 15px; }

.site-header { background: var(--accent); color: white; padding: 0 16px; }
.site-header-inner { max-width: 960px; margin: 0 auto; padding: 14px 0 0; }
.logo { font-size: 20px; font-weight: 800; letter-spacing: -.5px; margin-bottom: 10px; }
.logo span { opacity: .7; }
.header-nav { display: flex; gap: 4px; overflow-x: auto; }
.header-nav a { color: rgba(255,255,255,.8); font-size: 13px; font-weight: 600; padding: 8px 14px; border-radius: 8px 8px 0 0; text-decoration: none; white-space: nowrap; }
.header-nav a.active, .header-nav a:hover { background: rgba(255,255,255,.2); color: white; }

.container { max-width: 960px; margin: 0 auto; padding: 20px 16px 60px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 640px) { .two-col { grid-template-columns: 1fr; } }

/* CARDS */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 20px; }
.card-title { font-size: 14px; font-weight: 800; color: var(--label); margin-bottom: 14px; text-transform: uppercase; letter-spacing: .04em; }

/* FIELD */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; font-weight: 700; color: var(--label); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .04em; }
.field input, .field select { width: 100%; padding: 11px 14px; border: 1.5px solid var(--border); border-radius: 10px; font-size: 15px; background: var(--surface2); outline: none; }
.field input:focus, .field select:focus { border-color: var(--accent); background: white; }
.input-prefix { position: relative; }
.input-prefix span { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-weight: 700; color: var(--muted); }
.input-prefix input { padding-left: 24px; }
.half { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.btn { width: 100%; padding: 13px; background: var(--accent); color: white; border: none; border-radius: 12px; font-size: 15px; font-weight: 700; cursor: pointer; margin-top: 4px; }
.btn:hover { background: var(--accent2); }

/* REGIME COMPARISON */
.regime-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.regime-card { border-radius: 14px; padding: 16px; border: 2px solid transparent; }
.regime-card.new-regime { background: #eef2ff; border-color: #c7d2fe; }
.regime-card.old-regime { background: #fffbeb; border-color: #fde68a; }
.regime-card.winner { box-shadow: 0 0 0 3px var(--success); border-color: transparent; position: relative; }
.regime-card.winner::after { content: '✅ Better'; position: absolute; top: -10px; right: 10px; background: var(--success); color: white; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 10px; }
.regime-label { font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 8px; }
.regime-card.new-regime .regime-label { color: #4338ca; }
.regime-card.old-regime .regime-label { color: #92400e; }
.regime-tax { font-size: 26px; font-weight: 900; margin-bottom: 2px; }
.regime-card.new-regime .regime-tax { color: #4f46e5; }
.regime-card.old-regime .regime-tax { color: #d97706; }
.regime-sub { font-size: 11px; color: #6b7280; }

/* BREAKDOWN TABLE */
.breakdown { width: 100%; border-collapse: collapse; font-size: 13px; }
.breakdown th { background: var(--accent); color: white; padding: 8px 10px; text-align: right; font-size: 11px; font-weight: 700; }
.breakdown th:first-child { text-align: left; }
.breakdown td { padding: 7px 10px; border-bottom: 1px solid var(--border); text-align: right; }
.breakdown td:first-child { text-align: left; font-weight: 600; }
.breakdown tr:nth-child(even) td { background: #fffbeb; }
.breakdown .total-row td { font-weight: 800; background: #fef3c7; font-size: 14px; }

/* SLAB TABLE */
.slab-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 14px 0; }
.slab-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.slab-table th { padding: 6px 10px; font-size: 11px; font-weight: 700; text-align: left; }
.slab-table.new th { background: #eef2ff; color: #4338ca; }
.slab-table.old th { background: #fef3c7; color: #92400e; }
.slab-table td { padding: 5px 10px; border-bottom: 1px solid var(--border); }

/* SEO */
.seo { margin-top: 32px; }
.seo h2 { font-size: 17px; font-weight: 800; margin-bottom: 8px; }
.seo h3 { font-size: 14px; font-weight: 700; margin: 14px 0 6px; color: var(--label); }
.seo p, .seo li { font-size: 14px; color: #78350f; line-height: 1.7; }
.seo ul, .seo ol { padding-left: 20px; margin-bottom: 10px; }
details { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin-bottom: 8px; }
summary { font-weight: 700; font-size: 14px; cursor: pointer; }
details p { font-size: 13px; color: #78350f; margin-top: 8px; line-height: 1.6; }
footer { text-align: center; padding: 20px; font-size: 12px; color: var(--muted); }
footer a { color: var(--accent); text-decoration: none; }