/* CostMyProject — mobile-first, no frameworks. Keep total CSS < 8KB gzipped. */
:root{
  --ink:#1c2430; --ink-soft:#4a5568; --bg:#ffffff; --bg-alt:#f6f8fb;
  --line:#e2e8f0; --brand:#0f4c81; --brand-dark:#0b3a63; --accent:#e07b2a;
  --accent-soft:#fdf3e8; --green:#1a7f4e; --radius:10px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);line-height:1.65;font-size:1.02rem;background:var(--bg);
  -webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto}
a{color:var(--brand);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--brand-dark)}
.wrap{max-width:1080px;margin:0 auto;padding:0 1.1rem}
/* Header */
.site-header{background:var(--brand-dark);color:#fff;position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 1.1rem}
.brand{color:#fff;font-weight:800;font-size:1.15rem;text-decoration:none;letter-spacing:-.01em}
.brand span{color:#ffd9a8}
.site-nav{display:flex;gap:.2rem;flex-wrap:wrap}
.site-nav a{color:#dbe7f3;text-decoration:none;font-size:.92rem;padding:.45rem .7rem;border-radius:6px}
.site-nav a:hover{background:rgba(255,255,255,.12);color:#fff}
.site-nav a[aria-current="page"]{background:rgba(255,255,255,.16);color:#fff;font-weight:600}
/* Breadcrumbs */
.crumbs{font-size:.82rem;color:var(--ink-soft);padding:.7rem 0;border-bottom:1px solid var(--line)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem}
.crumbs li+li::before{content:"›";margin-right:.4rem;color:#a0aec0}
/* Hero */
.hero{background:linear-gradient(180deg,#0b3a63,#0f4c81);color:#fff;padding:3rem 0 2.6rem}
.hero h1{font-size:clamp(1.7rem,4.5vw,2.7rem);line-height:1.15;letter-spacing:-.02em;max-width:22ch}
.hero p{color:#cfe0f2;margin:1rem 0 1.5rem;max-width:52ch}
.btn{display:inline-block;background:#a85415;color:#fff;font-weight:700;padding:.75rem 1.4rem;
  border-radius:var(--radius);text-decoration:none;border:0;cursor:pointer;font-size:1rem}
.btn:hover{background:#8a4410;color:#fff}
.btn-ghost{display:inline-block;border:2px solid rgba(255,255,255,.6);color:#fff;font-weight:600;
  padding:.7rem 1.3rem;border-radius:var(--radius);text-decoration:none;margin-left:.6rem}
.btn-ghost:hover{border-color:#fff;color:#fff}
.hero-ctas{display:flex;flex-wrap:wrap;gap:.6rem}
/* Sections / cards */
section.block{padding:2.4rem 0}
h2.sec{font-size:1.45rem;letter-spacing:-.015em;margin-bottom:.4rem}
.lede{color:var(--ink-soft);max-width:62ch;margin-bottom:1.4rem}
.card-grid{display:grid;gap:1rem;grid-template-columns:1fr}
@media(min-width:680px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:980px){.card-grid.cols3{grid-template-columns:repeat(3,1fr)}}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem;background:#fff;
  display:flex;flex-direction:column;gap:.5rem}
.card:hover{border-color:#b8c9de;box-shadow:0 2px 14px rgba(15,76,129,.08)}
.card h3{font-size:1.1rem}
.card h3 a{text-decoration:none;color:var(--ink)}
.card p{font-size:.93rem;color:var(--ink-soft);flex:1}
.card .tag{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--green)}
/* Article */
.article{max-width:46rem}
.article h1{font-size:clamp(1.6rem,4vw,2.3rem);letter-spacing:-.02em;line-height:1.2;margin:1.2rem 0 .8rem}
.article h2{font-size:1.35rem;margin:2rem 0 .6rem;letter-spacing:-.01em}
.article h3{font-size:1.12rem;margin:1.4rem 0 .4rem}
.article p,.article ul,.article ol{margin-bottom:1rem}
.article ul,.article ol{padding-left:1.4rem}
.article li{margin-bottom:.35rem}
.article table{width:100%;border-collapse:collapse;margin:1.2rem 0;font-size:.92rem;display:block;overflow-x:auto}
.article thead th{background:var(--bg-alt);text-align:left}
.article th,.article td{border:1px solid var(--line);padding:.6rem .75rem;white-space:nowrap}
.article td:first-child,.article th:first-child{white-space:normal}
.byline{font-size:.85rem;color:var(--ink-soft);border-bottom:1px solid var(--line);padding-bottom:.8rem;margin-bottom:1.2rem}
.byline .verified{display:inline-block;background:#e6f4ec;color:var(--green);font-weight:700;font-size:.75rem;
  padding:.15rem .55rem;border-radius:20px;margin-left:.4rem}
.callout{background:var(--accent-soft);border-left:4px solid var(--accent);padding:1rem 1.2rem;
  border-radius:0 var(--radius) var(--radius) 0;margin:1.4rem 0}
.callout.method{background:#eef4fb;border-left-color:var(--brand)}
.callout strong{display:block;margin-bottom:.25rem}
.faq details{border:1px solid var(--line);border-radius:var(--radius);padding:.9rem 1.1rem;margin-bottom:.6rem}
.faq summary{font-weight:700;cursor:pointer}
.faq details p{margin:.6rem 0 0}
/* Calculator */
.calc{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem;margin:1.5rem 0}
.calc-grid{display:grid;gap:1rem;grid-template-columns:1fr}
@media(min-width:760px){.calc-grid{grid-template-columns:1fr 1fr}}
.field{margin-bottom:1rem}
.field label{display:block;font-weight:700;font-size:.9rem;margin-bottom:.35rem}
.field .hint{font-weight:400;font-size:.8rem;color:var(--ink-soft)}
.field input[type=number],.field input[type=text],.field select{width:100%;padding:.65rem .7rem;
  border:1px solid #b9c6d8;border-radius:8px;font-size:1rem;font-family:var(--font);background:#fff}
.field input:focus,.field select:focus{outline:2px solid var(--brand);outline-offset:1px}
.presets{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.4rem}
.preset{font-size:.8rem;padding:.35rem .7rem;border:1px solid #b9c6d8;border-radius:20px;background:#fff;
  cursor:pointer;color:var(--ink)}
.preset:hover{border-color:var(--brand);color:var(--brand)}
.preset[aria-pressed="true"]{background:var(--brand);color:#fff;border-color:var(--brand)}
.seg{display:flex;gap:.4rem;flex-wrap:wrap}
.seg button{flex:1;min-width:90px;padding:.6rem;border:1px solid #b9c6d8;border-radius:8px;background:#fff;
  cursor:pointer;font-weight:600;font-size:.92rem}
.seg button[aria-pressed="true"]{background:var(--brand);color:#fff;border-color:var(--brand)}
.result{background:#fff;border:2px solid var(--brand);border-radius:var(--radius);padding:1.3rem;margin-top:1.2rem}
.result h2{font-size:1.2rem;margin-bottom:.6rem}
.result .total{font-size:2rem;font-weight:800;color:var(--brand-dark);letter-spacing:-.02em}
.result table{width:100%;border-collapse:collapse;margin-top:.8rem;font-size:.92rem}
.result td{padding:.45rem 0;border-bottom:1px dashed var(--line)}
.result td:last-child{text-align:right;font-weight:700;white-space:nowrap}
.result .note{font-size:.8rem;color:var(--ink-soft);margin-top:.8rem}
.assume{background:#fffbe8;border:1px solid #f0dfa8;border-radius:8px;padding:.9rem 1.1rem;font-size:.85rem;
  margin-top:1rem;color:#5c4d1a}
/* Footer */
.site-footer{background:#101d2c;color:#b9c8da;margin-top:3rem;padding:2.5rem 0 2rem;font-size:.9rem}
.site-footer a{color:#dbe7f3}
.foot-grid{display:grid;gap:1.4rem;grid-template-columns:1fr}
@media(min-width:680px){.foot-grid{grid-template-columns:2fr 1fr 1fr}}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:.6rem}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:.35rem}
.foot-base{border-top:1px solid #24344a;margin-top:1.6rem;padding-top:1.2rem;font-size:.8rem;color:#8fa2b8}
/* Utility */
.mt1{margin-top:1rem}.mt2{margin-top:2rem}
.small{font-size:.85rem;color:var(--ink-soft)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:.5rem;top:.5rem;background:#fff;padding:.5rem;z-index:99}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}

/* --- Atlas supplement: steps, related links, math display, misc --- */
.steps{list-style:none;counter-reset:step;padding:0;margin:1.2rem 0}
.steps li{counter-increment:step;position:relative;padding:0 0 1.1rem 3rem}
.steps li::before{content:counter(step);position:absolute;left:0;top:0;width:2rem;height:2rem;
  border-radius:50%;background:var(--brand);color:#fff;font-weight:800;font-size:.95rem;
  display:flex;align-items:center;justify-content:center}
.steps li:last-child{padding-bottom:0}
.related{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.2rem 1.3rem;margin:2rem 0}
.related h2,.related h3{font-size:1.05rem;margin-bottom:.5rem}
.related ul{margin:0;padding-left:1.2rem}
.related li{margin-bottom:.3rem}
.math{background:#0f2438;color:#dbe7f3;border-radius:8px;padding:1rem 1.2rem;font-size:.88rem;
  overflow-x:auto;margin:.8rem 0}
.math code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre}
.data-date{display:inline-block;font-size:.78rem;font-weight:700;color:var(--green);
  background:#e6f4ec;border-radius:20px;padding:.2rem .65rem;margin:.4rem 0}
.src{font-size:.8rem;color:var(--ink-soft)}
.src a{color:var(--ink-soft)}
.kicker{font-size:.8rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--brand);
  margin-bottom:.4rem}
.stat-row{display:grid;gap:1rem;grid-template-columns:repeat(3,1fr);margin:1.4rem 0}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1rem;text-align:center}
.stat b{display:block;font-size:1.4rem;color:var(--brand-dark);letter-spacing:-.02em}
.stat span{font-size:.82rem;color:var(--ink-soft)}
@media(max-width:680px){.stat-row{grid-template-columns:1fr}}
.toc{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);
  padding:1rem 1.3rem;margin:1.4rem 0;max-width:34rem}
.toc p{font-weight:800;font-size:.9rem;margin-bottom:.4rem}
.toc ol{margin:0;padding-left:1.3rem;font-size:.92rem}
.toc li{margin-bottom:.25rem}
.badge-new{display:inline-block;background:var(--accent);color:#fff;font-size:.72rem;font-weight:800;
  text-transform:uppercase;letter-spacing:.05em;border-radius:4px;padding:.15rem .5rem;vertical-align:middle}
table.compare td.hl,table.compare th.hl{background:#eef4fb}

/* --- Competitor-beating overhaul: transparency + trust --- */
.trust-badge{display:inline-flex;align-items:center;gap:.45rem;background:#e6f4ec;color:#1a7f4e;
  font-weight:700;font-size:.82rem;padding:.42rem .85rem;border-radius:20px;margin:.7rem 0}
.trust-badge svg{flex:none}
.result .range{font-size:1.02rem;margin:.55rem 0 0;color:var(--ink)}
.result .range strong{color:var(--brand-dark);font-size:1.15rem}
.splitbar{display:flex;min-height:2.4rem;border-radius:8px;overflow:hidden;margin:1rem 0 .4rem;
  border:1px solid var(--line);font-size:.8rem;font-weight:700}
.splitbar div{display:flex;align-items:center;justify-content:center;color:#fff;min-width:0;
  white-space:nowrap;overflow:hidden;padding:.3rem .4rem}
.split-mat{background:var(--brand)}
.split-lab{background:var(--accent)}
.split-legend{font-size:.85rem;color:var(--ink-soft);margin-bottom:.2rem}
.incl-grid{display:grid;gap:1rem;grid-template-columns:1fr;margin:1.2rem 0}
@media(min-width:680px){.incl-grid{grid-template-columns:1fr 1fr}}
.incl{border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem 1.2rem;background:#fff}
.incl h3{font-size:1rem;margin-bottom:.5rem}
.incl.yes h3{color:var(--green)}
.incl.no h3{color:#b3402e}
.incl ul{margin:0;padding-left:1.2rem;font-size:.92rem}
.incl li{margin-bottom:.3rem}
.seg button{min-height:44px}
.preset{min-height:36px}
.fresh-note{font-size:.82rem;color:var(--ink-soft);background:var(--bg-alt);border:1px solid var(--line);
  border-radius:8px;padding:.7rem 1rem;margin:1.2rem 0}
.fresh-note strong{color:var(--ink)}

/* --- Inline calculator result blocks (pattern since Oct 2026: result-total/result-range/breakdown) --- */
.result-total{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);
  padding:1rem 1.2rem;margin-top:1.2rem}
.result-total span{font-size:.82rem;font-weight:800;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.05em}
.result-total strong{font-size:2rem;font-weight:800;color:var(--brand-dark);letter-spacing:-.02em}
.result-range{font-size:1.02rem;margin:.6rem 0 0}
.result-range strong{color:var(--brand-dark);font-size:1.15rem}
table.breakdown{width:100%;border-collapse:collapse;margin-top:.8rem;font-size:.92rem}
.breakdown th,.breakdown td{padding:.45rem 0;border-bottom:1px dashed var(--line);text-align:left}
.breakdown th:last-child,.breakdown td:last-child{text-align:right;font-weight:700;white-space:nowrap}
.checks{display:grid;gap:.45rem}
.checks label{display:flex;align-items:center;gap:.55rem;font-weight:600;font-size:.92rem;cursor:pointer}
.checks input[type=checkbox]{width:1.15rem;height:1.15rem;flex:none;accent-color:var(--brand)}
.checks .hint{margin-left:auto;color:var(--ink-soft);font-weight:700}

/* Visible keyboard focus (10/10 a11y): default outlines were the only focus style for links/buttons */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.site-header a:focus-visible{outline-color:#fff}
.hero-search{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:1.4rem;max-width:36rem}
.hero-search input{flex:1;min-width:220px;padding:.75rem 1rem;border:1px solid #cbd5e0;border-radius:8px;font-size:1rem}