:root {
  --paper: #F4F6F3;
  --surface: #FFFFFF;
  --ink: #18201C;
  --ink-soft: #4C5852;
  --green: #12352B;
  --green-2: #1E5A47;
  --mark: #F2C14E;
  --mark-soft: #FCEFC7;
  --rule: #D5DCD7;
  --focus: #1E6FD9;
  --on-green: #F4F6F3;
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F1714; --surface: #16201C; --ink: #E7ECE9; --ink-soft: #A3B0A9;
    --green: #2E7A60; --green-2: #6FC2A2; --mark: #E8B63F; --mark-soft: #3A3218;
    --rule: #2B3833; --focus: #7DB3FF; --on-green: #F4F6F3; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F1714; --surface: #16201C; --ink: #E7ECE9; --ink-soft: #A3B0A9;
  --green: #2E7A60; --green-2: #6FC2A2; --mark: #E8B63F; --mark-soft: #3A3218;
  --rule: #2B3833; --focus: #7DB3FF; --on-green: #F4F6F3; color-scheme: dark;
}
html { scroll-padding-top: env(safe-area-inset-top, 0px); scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: "Public Sans", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  font-size: 1rem; line-height: 1.55; -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--green-2); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
.wrap { width: min(1120px, 100% - 2.5rem); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 1rem; }

/* Header */
.site-head { border-bottom: 1px solid var(--rule); background: var(--paper); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .85rem; }
.brand { display: flex; align-items: center; gap: .65rem; text-decoration: none; color: var(--ink); }
.brand-mark { display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border-radius: .6rem; background: var(--green); color: var(--on-green); }
.brand-name { font-family: "Bricolage Grotesque", "Segoe UI", sans-serif; font-weight: 800; font-size: 1.3rem; letter-spacing: -.01em; }
.site-nav { display: flex; gap: 1.25rem; font-size: .95rem; }
.site-nav a { color: var(--ink-soft); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; }
@media (max-width: 520px) { .site-nav { gap: .85rem; font-size: .9rem; } .brand-name { font-size: 1.15rem; } }

/* Hero and page heads */
.hero { padding-block: clamp(2rem, 5vw, 3.5rem) 1.5rem; }
.hero h1, .page-head h1 {
  font-family: "Bricolage Grotesque", "Segoe UI", sans-serif; font-weight: 800;
  line-height: 1.05; letter-spacing: -.025em; margin: 0 0 1rem;
}
.hero h1 { font-size: clamp(2rem, 5.2vw, 3.6rem); max-width: 17ch; }
.page-head { padding-block: 1.75rem 1.25rem; }
.page-head h1 { font-size: clamp(1.8rem, 4.4vw, 2.9rem); max-width: 22ch; }
.hero p, .page-head p { font-size: 1.1rem; color: var(--ink-soft); max-width: 60ch; margin: 0 0 1.25rem; }
.crumbs { font-size: .88rem; color: var(--ink-soft); margin: 0 0 .9rem; }
.crumbs a { color: var(--ink-soft); }
.promises { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; padding: 0; margin: 0; list-style: none; font-size: .95rem; font-weight: 500; }
.promises li { display: flex; align-items: center; gap: .45rem; }
.promises svg { flex: none; color: var(--green-2); }

/* Calculator */
.calc { padding-bottom: 3rem; }
.tabs { display: flex; gap: .35rem; overflow-x: auto; border-bottom: 2px solid var(--green); scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab { flex: none; border: 0; background: transparent; color: var(--ink-soft); font: inherit; font-weight: 600; font-size: .98rem; padding: .75rem 1.1rem; cursor: pointer; border-radius: .55rem .55rem 0 0; }
.tab:hover { color: var(--ink); background: var(--surface); }
.tab[aria-selected="true"] { background: var(--green); color: var(--on-green); }
.tab small { display: block; font-weight: 400; font-size: .78rem; opacity: .8; }
.panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); background: var(--surface); border: 1px solid var(--rule); border-top: 0; border-radius: 0 0 1rem 1rem; }
.panel.solo { border-top: 1px solid var(--rule); border-radius: 1rem; }
.panel[hidden] { display: none; }
.inputs { padding: clamp(1.25rem, 3vw, 2rem); }
.inputs h2 { font-family: "Bricolage Grotesque", sans-serif; font-weight: 700; font-size: 1.45rem; margin: 0 0 .35rem; letter-spacing: -.01em; }
.inputs .lead { color: var(--ink-soft); margin: 0 0 1.4rem; font-size: .97rem; }
.field { margin-bottom: 1.1rem; }
.field label, .field .label { display: block; font-weight: 600; font-size: .95rem; margin-bottom: .35rem; }
.field .hint { display: block; font-size: .85rem; color: var(--ink-soft); margin-top: .3rem; }
.money { display: flex; align-items: stretch; border: 1.5px solid var(--rule); border-radius: .6rem; background: var(--paper); overflow: hidden; }
.money:focus-within { border-color: var(--green-2); box-shadow: 0 0 0 3px color-mix(in srgb, var(--green-2) 22%, transparent); }
.money span { display: grid; place-items: center; padding-inline: .8rem; color: var(--ink-soft); font-weight: 600; font-size: .9rem; border-right: 1px solid var(--rule); }
.money input, .plain { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink); font: inherit; font-size: 1.15rem; font-weight: 600; font-variant-numeric: tabular-nums; padding: .7rem .8rem; }
.money input:focus, .plain:focus { outline: none; }
.plain { width: 100%; min-width: 0; max-width: 100%; border: 1.5px solid var(--rule); border-radius: .6rem; background: var(--paper); font-size: 1rem; }
.plain:focus { border-color: var(--green-2); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.seg { display: inline-flex; border: 1.5px solid var(--rule); border-radius: .6rem; overflow: hidden; }
.seg button { white-space: nowrap; border: 0; background: transparent; color: var(--ink-soft); font: inherit; font-weight: 600; font-size: .9rem; padding: .45rem .75rem; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--green); color: var(--on-green); }

.receipt-wrap { padding: clamp(1.25rem, 3vw, 2rem); background: var(--paper); border-left: 1px solid var(--rule); border-radius: 0 0 1rem 0; }
.panel.solo .receipt-wrap { border-radius: 0 1rem 1rem 0; }
.receipt { position: relative; background: var(--surface); padding: 1.6rem 1.4rem 1.4rem; border-radius: .3rem; box-shadow: 0 1px 0 var(--rule), 0 12px 30px -18px rgba(18, 53, 43, .45); font-variant-numeric: tabular-nums; }
.receipt::before { content: ""; position: absolute; left: 0; right: 0; top: -7px; height: 8px; background: radial-gradient(circle at 7px 0, transparent 6px, var(--surface) 6.5px) 0 0 / 14px 8px repeat-x; }
.r-title { font-size: .9rem; color: var(--ink-soft); margin: 0 0 .2rem; }
.r-total { font-family: "Bricolage Grotesque", sans-serif; font-weight: 800; font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.05; letter-spacing: -.02em; margin: 0 0 .25rem; }
.r-total mark { background: linear-gradient(transparent 58%, var(--mark-soft) 58%); color: inherit; padding-inline: .1em; }
.r-sub { color: var(--ink-soft); margin: 0 0 1.1rem; font-size: .95rem; }
.r-lines { list-style: none; padding: 0; margin: 0; border-top: 1.5px dashed var(--rule); }
.r-lines li { display: flex; justify-content: space-between; gap: 1rem; padding: .55rem 0; border-bottom: 1px dashed var(--rule); font-size: .95rem; }
.r-lines li span:first-child { color: var(--ink-soft); }
.r-lines li span:last-child { font-weight: 600; text-align: right; }
.r-lines li.strong span { color: var(--ink); font-weight: 700; }
.working { margin-top: 1rem; font-size: .9rem; background: var(--mark-soft); border-radius: .5rem; padding: .8rem .9rem; }
.working b { display: block; margin-bottom: .2rem; }
.r-source { margin: 1rem 0 0; font-size: .82rem; color: var(--ink-soft); }
.saving { display: inline-block; margin-top: .2rem; padding: .15rem .55rem; border-radius: 99px; background: color-mix(in srgb, var(--green-2) 15%, transparent); color: var(--green-2); font-weight: 600; font-size: .85rem; }
.copy-btn { margin-top: 1rem; border: 1.5px solid var(--green); background: transparent; color: var(--ink); font: inherit; font-weight: 600; font-size: .9rem; padding: .5rem .9rem; border-radius: .55rem; cursor: pointer; }
.copy-btn:hover { background: var(--green); color: var(--on-green); }
@media (max-width: 820px) {
  .panel { grid-template-columns: minmax(0, 1fr); }
  .receipt-wrap, .panel.solo .receipt-wrap { border-left: 0; border-top: 1px solid var(--rule); border-radius: 0 0 1rem 1rem; }
}
@media (max-width: 420px) { .row2 { grid-template-columns: 1fr; } }

/* Sections */
section.block { padding-block: 2.75rem; border-top: 1px solid var(--rule); }
section.block h2 { font-family: "Bricolage Grotesque", sans-serif; font-weight: 800; font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -.015em; margin: 0 0 .6rem; }
section.block .intro { color: var(--ink-soft); max-width: 62ch; margin: 0 0 1.5rem; }
.sources { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem 2rem; }
.sources h3 { font-size: 1.02rem; margin: 0 0 .3rem; }
.sources p { margin: 0; color: var(--ink-soft); font-size: .95rem; }
.checked { display: inline-block; margin-top: 1.5rem; font-size: .9rem; font-weight: 600; }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; }
.tool-link { display: block; padding: 1.1rem 1.2rem; border: 1px solid var(--rule); border-radius: .8rem; background: var(--surface); color: var(--ink); text-decoration: none; }
.tool-link:hover { border-color: var(--green-2); }
.tool-link h3 { margin: 0 0 .25rem; font-size: 1.06rem; }
.tool-link p { margin: 0; color: var(--ink-soft); font-size: .93rem; }
.post-list { list-style: none; padding: 0; margin: 0; max-width: 760px; }
.post-list li { padding: 1.1rem 0; border-bottom: 1px solid var(--rule); }
.post-list a { font-weight: 700; font-size: 1.12rem; color: var(--ink); text-decoration: none; }
.post-list a:hover { text-decoration: underline; }
.post-list p { margin: .3rem 0 0; color: var(--ink-soft); }

.faq details { border-bottom: 1px solid var(--rule); max-width: 760px; }
.faq summary { cursor: pointer; padding: 1rem 0; font-weight: 600; font-size: 1.04rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.3rem; line-height: 1; color: var(--green-2); }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin: 0 0 1rem; color: var(--ink-soft); max-width: 66ch; }

/* Articles */
.prose { max-width: 70ch; padding-bottom: 3rem; }
.prose h2 { font-family: "Bricolage Grotesque", sans-serif; font-weight: 700; font-size: 1.5rem; letter-spacing: -.01em; margin: 2.2rem 0 .6rem; }
.prose h3 { font-size: 1.15rem; margin: 1.6rem 0 .4rem; }
.prose p, .prose li { font-size: 1.05rem; line-height: 1.72; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.meta { color: var(--ink-soft); font-size: .9rem; margin: 0 0 1.5rem; }
.table-scroll { overflow-x: auto; margin: 1rem 0 1.25rem; border: 1px solid var(--rule); border-radius: .6rem; }
.prose table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; font-size: .97rem; background: var(--surface); }
.prose th, .prose td { padding: .6rem .8rem; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.prose th { background: var(--paper); font-weight: 700; }
.prose tr:last-child td { border-bottom: 0; }
.cta-box { background: var(--mark-soft); border-radius: .8rem; padding: 1.1rem 1.3rem; margin: 1.75rem 0; }
.cta-box p { margin: 0 0 .7rem; font-weight: 600; }
.btn { display: inline-block; background: var(--green); color: var(--on-green); padding: .62rem 1.15rem; border-radius: .55rem; font-weight: 600; text-decoration: none; }
.btn:hover { background: var(--green-2); }

.site-foot { background: var(--green); color: var(--on-green); padding-block: 2.5rem; font-size: .92rem; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 1.75rem; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.site-foot h2 { font-size: .98rem; margin: 0 0 .6rem; }
.site-foot ul { list-style: none; padding: 0; margin: 0; }
.site-foot li { margin-bottom: .35rem; }
.site-foot a { color: var(--on-green); }
.site-foot p { margin: 0 0 .5rem; opacity: .9; max-width: 44ch; }
.copyright { margin-top: 1.75rem; opacity: .8; font-size: .85rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }