:root{
  --ink:#1C2B22; --paper:#F6F4EE; --card:#FFFFFF; --line:#DCD8CC;
  --accent:#8A5A3B; --income:#4C7A5E; --expense:#B4523F; --muted:#726C5E;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){ --ink:#EDEAE0; --paper:#161613; --card:#201F1B; --line:#3A382F; --accent:#D8A671; --income:#7FBF9C; --expense:#E58975; --muted:#9B9484; }
}
:root[data-theme="dark"]{ --ink:#EDEAE0; --paper:#161613; --card:#201F1B; --line:#3A382F; --accent:#D8A671; --income:#7FBF9C; --expense:#E58975; --muted:#9B9484; }

*{box-sizing:border-box;}
html{scroll-padding-top:env(safe-area-inset-top,0px);}
body{margin:0;background:var(--paper);color:var(--ink);font-family:'Inter',system-ui,sans-serif;line-height:1.5;overflow-x:hidden;
  padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.print-only{display:none;}

.page-shell{max-width:960px;margin:0 auto;min-width:0;}

/* Ad slots: fixed-height reserved containers, inline in normal page flow (no sidebars) */
.ad-slot{border:1px dashed var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:12px;background:var(--card);}
.ad-slot-banner{width:100%;max-width:728px;min-height:100px;margin:28px auto;}
.ad-slot-native{width:100%;min-height:200px;margin:24px 0;}
@media(min-width:600px){ .ad-slot-banner{min-height:90px;} }

.site-header{border-bottom:1px solid var(--line);padding:18px 24px;background:var(--card);}
.site-header-inner{max-width:960px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.site-header h1{font-family:'Fraunces',serif;font-weight:600;font-size:clamp(20px,4.5vw,28px);margin:0;letter-spacing:-0.01em;color:var(--ink);}
#themeToggle{background:none;border:1px solid var(--line);border-radius:8px;width:38px;height:38px;flex:0 0 auto;cursor:pointer;font-size:16px;line-height:1;color:var(--ink);}
#themeToggle:hover{border-color:var(--accent);}

.site-footer{border-top:1px solid var(--line);padding:20px 24px;margin-top:48px;background:var(--card);}
.site-footer-inner{max-width:960px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted);}
#backToTop{background:none;border:1px solid var(--line);border-radius:8px;padding:6px 14px;color:var(--muted);cursor:pointer;font-family:'Inter',sans-serif;font-size:13px;}
#backToTop:hover{border-color:var(--accent);color:var(--accent);}

.wb-wrap{padding:32px 24px 80px;min-width:0;}
.wb-sub{color:var(--muted);margin:0 0 32px;font-size:15px;}
.wb-cols{display:grid;grid-template-columns:1fr;gap:20px;min-width:0;}
@media(min-width:760px){.wb-cols{grid-template-columns:1.6fr 1fr;align-items:start;}}
.wb-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 20px;min-width:0;}
.wb-section-title{font-family:'Fraunces',serif;font-size:19px;font-weight:600;margin:0 0 14px;display:flex;align-items:center;justify-content:space-between;}
.wb-section-title span.tag{font-size:12px;font-weight:500;color:var(--muted);font-family:'Inter',sans-serif;}

.wb-card table{width:100%;min-width:480px;border-collapse:collapse;}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -2px;}
.wb-card th{text-align:left;font-size:11px;color:var(--muted);font-weight:600;padding:0 6px 8px;}
.wb-card th.num,.wb-card td.num{text-align:right;}
.wb-card td{padding:6px;border-top:1px solid var(--line);vertical-align:middle;}
.wb-card output{font-variant-numeric:tabular-nums;}
.wb-card input[type=text],.wb-card input[type=number]{
  width:100%;border:1px solid transparent;background:transparent;color:var(--ink);
  font-family:'Inter',sans-serif;font-size:14px;padding:6px 7px;border-radius:7px;font-variant-numeric:tabular-nums;
}
.wb-card input[type=text]:hover,.wb-card input[type=number]:hover{border-color:var(--line);}
.wb-card input[type=text]:focus,.wb-card input[type=number]:focus{outline:none;border-color:var(--accent);background:var(--paper);}
.wb-card input[type=number]{text-align:right;}
.wb-card select{
  border:1px solid var(--line);background:var(--paper);color:var(--ink);font-family:'Inter',sans-serif;
  font-size:13px;padding:6px 8px;border-radius:7px;
}
.wb-rm{background:none;border:none;color:var(--muted);cursor:pointer;font-size:17px;padding:4px 8px;border-radius:6px;line-height:1;}
.wb-rm:hover{background:var(--paper);color:var(--expense);}
.wb-add-row{margin-top:12px;background:none;border:1px dashed var(--line);color:var(--muted);border-radius:9px;
  padding:9px 14px;font-family:'Inter',sans-serif;font-size:13px;cursor:pointer;width:100%;}
.wb-add-row:hover{border-color:var(--accent);color:var(--accent);}
.wb-summary-row{display:flex;justify-content:space-between;align-items:baseline;padding:9px 0;border-top:1px solid var(--line);}
.wb-summary-row:first-of-type{border-top:none;}
.wb-summary-row .label{color:var(--muted);font-size:14px;}
.wb-summary-row .val{font-variant-numeric:tabular-nums;font-weight:600;font-size:16px;}
.wb-big{margin-top:4px;padding-top:16px;border-top:1px solid var(--line);}
.wb-big .val{font-family:'Fraunces',serif;font-size:30px;font-weight:600;}
.wb-pos{color:var(--income);} .wb-neg{color:var(--expense);}
.wb-bar{height:8px;border-radius:5px;background:var(--paper);overflow:hidden;margin:14px 0 4px;border:1px solid var(--line);}
.wb-bar-fill{height:100%;width:100%;background:var(--accent);border-radius:5px;transform-origin:left;transform:scaleX(0);transition:transform .3s ease;}
.wb-pct{font-size:12px;color:var(--muted);}
.wb-freq-note{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.5;}
.wb-reset{background:none;border:none;color:var(--muted);font-size:12px;text-decoration:underline;cursor:pointer;padding:0;margin-top:18px;}
.wb-saved-note{display:none;font-size:12px;color:var(--income);margin-left:8px;}

/* Spending breakdown donut chart (pure CSS conic-gradient, no chart library) */
.chart-wrap{display:flex;gap:28px;align-items:center;flex-wrap:wrap;}
.donut{width:170px;height:170px;border-radius:50%;position:relative;flex:0 0 auto;background:var(--line);}
.donut-hole{position:absolute;inset:21%;background:var(--card);border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;}
.donut-hole strong{font-family:'Fraunces',serif;font-size:22px;color:var(--ink);line-height:1;}
.donut-hole span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-top:2px;}
.chart-legend{list-style:none;margin:0;padding:0;display:grid;gap:8px;flex:1 1 220px;min-width:200px;}
.chart-legend li{display:flex;align-items:center;gap:8px;font-size:13px;}
.swatch{width:11px;height:11px;border-radius:3px;flex:0 0 auto;}

/* Informational / FAQ content targeting long-tail search queries */
.content-section{max-width:720px;margin:56px auto 0;padding:0 4px;}
.content-section h2{font-family:'Fraunces',serif;font-weight:600;font-size:24px;margin:0 0 12px;}
.content-section h3{font-family:'Fraunces',serif;font-weight:600;font-size:17px;margin:22px 0 6px;}
.content-section p{color:var(--ink);font-size:15px;line-height:1.65;margin:0 0 12px;}
.content-section ul{padding-left:20px;margin:0 0 12px;}
.content-section li{font-size:15px;line-height:1.6;margin-bottom:6px;}
.faq details{border-top:1px solid var(--line);padding:14px 0;}
.faq details:last-child{border-bottom:1px solid var(--line);}
.faq summary{font-family:'Inter',sans-serif;font-weight:600;font-size:15px;cursor:pointer;list-style:none;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::before{content:'+';display:inline-block;width:16px;color:var(--accent);font-weight:700;}
.faq details[open] summary::before{content:'−';}
.faq p{margin:10px 0 0 16px;color:var(--muted);}

@media print{
  :root{ --ink:#1C2B22; --paper:#FFFFFF; --card:#FFFFFF; --line:#CCCCCC; --accent:#5C3E29; --income:#2F6B4A; --expense:#9C3B2B; --muted:#444444; }
  @page{ margin:1.5cm; }
  body{background:#fff;}
  .page-shell{max-width:100%;}
  .site-header, .site-footer{display:none !important;}
  .ad-slot, .wb-add-row, .wb-reset, .wb-rm, #loadInput, #savedNote, #backToTop{display:none !important;}
  .wb-card thead th:last-child, .wb-card td:last-child{display:none;}
  input, select{border:none !important;background:transparent !important;appearance:none;-webkit-appearance:none;color:inherit;padding:2px 4px;}
  .print-only{display:block !important;font-size:12px;color:#444;margin-bottom:16px;}
  .wb-card{break-inside:avoid;border-color:#ccc;}
  .content-section{display:none;}
}