/* AI Small Business Playbook — deep-navy + amber "playbook" theme */
:root{
  --navy:#0e1f38;
  --navy-2:#16294a;
  --navy-3:#1f3a63;
  --amber:#f2a41f;
  --amber-dark:#c77f0a;
  --amber-soft:#fdf3df;
  --cream:#faf6ee;
  --paper:#ffffff;
  --ink:#1d2433;
  --muted:#5b6474;
  --line:#e4ddcf;
  --radius:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Georgia,'Times New Roman',serif;
  color:var(--ink);
  background:var(--cream);
  line-height:1.65;
  font-size:18px;
}
h1,h2,h3,h4,.brand,.main-nav a,.btn,.kicker,.toc h2{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
img{max-width:100%;height:auto}

/* ---------- header ---------- */
.site-header{
  background:var(--navy);
  color:#fff;
  position:sticky;top:0;z-index:50;
  border-bottom:3px solid var(--amber);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;flex-wrap:wrap}
.brand{color:#fff;text-decoration:none;font-weight:800;font-size:1.25rem;letter-spacing:.2px}
.brand-mark{
  display:inline-block;background:var(--amber);color:var(--navy);
  font-weight:900;border-radius:8px;padding:2px 9px;margin-right:8px;font-size:1.05rem;
}
.main-nav{display:flex;gap:4px;flex-wrap:wrap}
.main-nav a{
  color:#dbe4f3;text-decoration:none;font-size:.95rem;font-weight:600;
  padding:8px 12px;border-radius:8px;
}
.main-nav a:hover,.main-nav a.active{background:var(--navy-2);color:#fff}

/* ---------- hero ---------- */
.hero{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 60%,var(--navy-3) 100%);
  color:#fff;padding:64px 0 56px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:6px;
  background:linear-gradient(90deg,var(--amber) 0%,var(--amber) 35%,transparent 35%);
  opacity:.9;
}
.hero h1{font-size:2.4rem;line-height:1.15;margin:.4em 0 .3em;max-width:18em}
.hero p.lead{color:#c9d6ea;font-size:1.15rem;max-width:38em}
.kicker{
  color:var(--amber);text-transform:uppercase;letter-spacing:2px;
  font-size:.8rem;font-weight:800;margin:0;
}
.hero .btn-row{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-block;background:var(--amber);color:var(--navy);
  font-weight:800;text-decoration:none;padding:12px 22px;border-radius:10px;
  border:2px solid var(--amber);
}
.btn:hover{background:var(--amber-dark);border-color:var(--amber-dark);color:#fff}
.btn.ghost{background:transparent;color:#fff;border-color:#7d8fb0}
.btn.ghost:hover{border-color:var(--amber);color:var(--amber)}

/* ---------- sections & cards ---------- */
.section{padding:48px 0}
.section h2.section-title{font-size:1.7rem;margin:0 0 6px;color:var(--navy)}
.section p.section-sub{color:var(--muted);margin:0 0 26px;max-width:44em}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.cat-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;display:flex;flex-direction:column;
}
.cat-card.top{border-top:5px solid var(--amber)}
.cat-card h3{margin:0 0 4px;font-size:1.2rem;color:var(--navy)}
.cat-card h3 a{color:var(--navy);text-decoration:none}
.cat-card h3 a:hover{color:var(--amber-dark);text-decoration:underline}
.cat-card .count{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  font-size:.78rem;font-weight:700;color:var(--amber-dark);
  text-transform:uppercase;letter-spacing:1px;
}
.cat-card p{color:var(--muted);font-size:.98rem;flex:1}
.cat-card ul{list-style:none;margin:12px 0 0;padding:0;font-size:.95rem}
.cat-card li{margin:6px 0}
.cat-card li a{color:var(--navy-3);text-decoration:none}
.cat-card li a:hover{color:var(--amber-dark);text-decoration:underline}

/* start-here path */
.path{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0;margin-top:10px}
.path-step{
  background:var(--paper);border:1px solid var(--line);padding:22px;position:relative;
}
.path-step:first-child{border-radius:var(--radius) 0 0 var(--radius)}
.path-step:last-child{border-radius:0 var(--radius) var(--radius) 0}
.path-step .step-num{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  background:var(--navy);color:var(--amber);font-weight:900;
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  margin-bottom:10px;font-size:1.05rem;
}
.path-step h3{margin:0 0 6px;font-size:1.08rem}
.path-step h3 a{color:var(--navy);text-decoration:none}
.path-step p{font-size:.95rem;color:var(--muted);margin:0}

/* ROI strip */
.roi-strip{background:var(--navy);color:#fff;border-radius:var(--radius);padding:30px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-top:8px}
.roi-stat .big{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;font-size:1.9rem;font-weight:900;color:var(--amber)}
.roi-stat p{margin:6px 0 0;color:#c9d6ea;font-size:.95rem}
.fine{font-size:.85rem;color:var(--muted)}

/* featured */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.feat-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.feat-card img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.feat-card .body{padding:18px;display:flex;flex-direction:column;flex:1}
.feat-card .kicker{font-size:.72rem}
.feat-card h3{margin:6px 0;font-size:1.12rem}
.feat-card h3 a{color:var(--navy);text-decoration:none}
.feat-card h3 a:hover{color:var(--amber-dark)}
.feat-card p{color:var(--muted);font-size:.95rem;flex:1}

/* calculator teaser */
.calc-teaser{
  background:linear-gradient(135deg,var(--amber-soft),#fff);
  border:2px solid var(--amber);border-radius:var(--radius);
  padding:32px;display:flex;gap:24px;align-items:center;flex-wrap:wrap;justify-content:space-between;
}
.calc-teaser h2{margin:0 0 8px;color:var(--navy)}
.calc-teaser p{margin:0;color:var(--muted);max-width:36em}

/* ---------- article pages ---------- */
.article-layout{padding:36px 0 60px}
.breadcrumbs{font-size:.9rem;color:var(--muted);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
.breadcrumbs a{color:var(--navy-3);text-decoration:none}
.breadcrumbs a:hover{text-decoration:underline}
.article{max-width:780px}
.article h1{font-size:2.1rem;line-height:1.2;color:var(--navy);margin:.35em 0 .4em}
p.lede{font-size:1.18rem;color:#33415a}
.hero-figure{margin:26px 0}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);display:block}
.hero-figure figcaption{font-size:.85rem;color:var(--muted);margin-top:8px}
.article h2{color:var(--navy);font-size:1.45rem;margin:1.8em 0 .5em;padding-top:.4em;border-top:2px solid var(--line)}
.article h2:first-of-type{border-top:none}
.article ul{padding-left:1.3em}
.article li{margin:.45em 0}

/* sticky TOC bar (sits inside the article, sticks under the header) */
.toc{
  background:var(--navy);color:#dbe4f3;border-radius:var(--radius);
  padding:16px 22px;margin:26px 0;
  position:sticky;top:74px;z-index:40;
  box-shadow:0 4px 14px rgba(14,31,56,.25);
}
.toc h2{color:var(--amber);font-size:.95rem;margin:0 0 8px;text-transform:uppercase;letter-spacing:1.5px;border:none;padding:0}
.toc ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px 20px}
.toc li{margin:0}
.toc a{color:#dbe4f3;text-decoration:none;font-size:.92rem;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
.toc a:hover{color:var(--amber)}

/* ROI callout */
.roi-box{
  background:var(--amber-soft);border:1px solid var(--amber);
  border-left:8px solid var(--amber);border-radius:0 var(--radius) var(--radius) 0;
  padding:22px 24px;margin:28px 0;
}
.roi-box h2{border:none;padding:0;margin:0 0 10px;color:var(--navy)}
.roi-box h2 .tag{
  font-size:.72rem;background:var(--navy);color:var(--amber);border-radius:6px;
  padding:3px 9px;vertical-align:middle;letter-spacing:1px;margin-left:8px;
}
.example-math{
  background:#fff;border:1px dashed var(--amber-dark);border-radius:8px;
  padding:14px 18px;margin:14px 0;font-size:.98rem;
}
.example-math strong{color:var(--navy)}

/* numbered setup steps */
ol.steps{list-style:none;counter-reset:step;margin:20px 0;padding:0}
ol.steps>li{
  counter-increment:step;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px 18px 74px;margin:12px 0;position:relative;
}
ol.steps>li::before{
  content:counter(step);
  position:absolute;left:18px;top:16px;width:40px;height:40px;border-radius:50%;
  background:var(--navy);color:var(--amber);
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  font-weight:900;font-size:1.15rem;display:flex;align-items:center;justify-content:center;
}
ol.steps>li strong{display:block;color:var(--navy);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;margin-bottom:4px}

/* diagrams */
figure.diagram{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:28px 0;text-align:center}
figure.diagram svg{max-width:100%;height:auto}
figure.diagram figcaption{font-size:.85rem;color:var(--muted);margin-top:10px;text-align:left}

/* keep reading */
.keep-reading{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:34px 0}
.keep-reading h2{border:none;padding:0;margin:0 0 10px;font-size:1.2rem}
.keep-reading ul{list-style:none;margin:0;padding:0}
.keep-reading li{margin:8px 0}
.keep-reading a{color:var(--navy-3);text-decoration:none;font-weight:600;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
.keep-reading a:hover{color:var(--amber-dark);text-decoration:underline}

/* ---------- calculator ---------- */
.calc-wrap{max-width:860px;margin:0 auto;padding:36px 0 60px}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:24px}
@media(max-width:760px){.calc-grid{grid-template-columns:1fr}}
.calc-form{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.calc-form label{display:block;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;font-weight:700;color:var(--navy);margin:16px 0 6px;font-size:.98rem}
.calc-form label small{display:block;font-weight:400;color:var(--muted)}
.calc-form input{width:100%;padding:11px 12px;font-size:1.05rem;border:2px solid var(--line);border-radius:8px;font-family:inherit}
.calc-form input:focus{border-color:var(--amber);outline:none}
.calc-results{background:var(--navy);color:#fff;border-radius:var(--radius);padding:26px}
.calc-results h2{color:var(--amber);margin-top:0;font-size:1.25rem}
.result-row{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--navy-3);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
.result-row:last-child{border-bottom:none}
.result-row .val{font-weight:900;color:var(--amber);font-size:1.15rem;text-align:right}
.result-row.hero-result .val{font-size:1.6rem}
.calc-note{font-size:.88rem;color:#9fb0cc;margin-top:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#9fb0cc;padding:36px 0;margin-top:20px;border-top:4px solid var(--amber)}
.site-footer p{font-size:.92rem;max-width:60em}
.site-footer a{color:var(--amber);text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.site-footer nav{display:flex;gap:18px;margin-top:12px;flex-wrap:wrap;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;font-size:.95rem}

@media(max-width:640px){
  body{font-size:17px}
  .hero h1{font-size:1.8rem}
  .article h1{font-size:1.65rem}
  ol.steps>li{padding-left:66px}
}

.site-footer .ai-disclosure{font-size:.85em;opacity:.85}