/* Professional theme */
:root{
  --bg: #f3f6f8;
  --card: #ffffff;
  --muted: #6b7280;
  --brand: #0f1724;
  --accent: #1a73e8;
  --radius: 12px;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{font-family:'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial; background:var(--bg);color:var(--brand);-webkit-font-smoothing:antialiased}
.container{max-width:1100px;margin:0 auto;padding:0 24px}

/* Header */
header{background:linear-gradient(180deg,#f8fafc, #f3f6f8);padding:12px 0;border-bottom:1px solid #e6eaee}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:700;font-size:1.375rem;color:var(--brand);display:inline-block;text-decoration:none}
nav{display:flex;gap:8px;align-items:center}
nav a{color:var(--accent);text-decoration:none;margin-left:12px;font-size:0.95rem;padding:6px 8px;border-radius:6px}
nav a:hover{background:rgba(26,115,232,0.06);text-decoration:none}
.nav-toggle{display:none;background:transparent;border:0;font-size:1.5rem;padding:6px 8px;cursor:pointer;color:var(--brand)}

/* small JS helper spacing for toggle */
.nav-toggle[aria-expanded="true"]{color:var(--accent)}

/* Main card */
h1{font-size:2.25rem;margin:0 0 12px}
p.lead{color:#374151;font-size:1.06rem;line-height:1.8;margin:0 0 18px}

/* Make main content align with header container and provide horizontal padding */
main{max-width:1100px;margin:40px auto;padding:28px 24px 32px;background:#ffffff;border-radius:0;box-shadow:none}

.actions{margin-top:20px}
a.action{color:var(--accent);text-decoration:none;margin-right:18px}
a.action strong{font-weight:700}

/* Footer */
footer{margin-top:48px;padding:28px 0;background:linear-gradient(180deg,#f8fafc,#f3f6f8);border-top:1px solid #e6eaee}
footer .container{display:flex;align-items:center;justify-content:space-between}
footer small{color:var(--muted)}

@media (max-width:860px){
  nav{float:none;text-align:right;margin-top:8px}
  main{margin:24px 16px}
  footer .container{flex-direction:column;align-items:flex-start}
}

/* Hero and layout */
.hero{background:transparent;padding:18px 0}
.hero-inner{display:flex;align-items:center}
.hero-content h1{font-size:2.75rem;margin-bottom:6px}
.layout{display:flex;gap:32px;align-items:flex-start;padding:18px 24px}
.main-col{flex:1}
.side-col{width:260px}
.card{background:#fff;border:1px solid #eef2f6;padding:14px;border-radius:8px}
.card h4{margin-top:0}

/* Force site font for main content to avoid pasted inline fonts */
.main-col, .main-col * {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial !important;
}
/* Force same font size for all content elements inside main column */
.main-col, .main-col * {
  font-size:16px !important;
  line-height:1.6 !important;
}

/* Keep headings larger than body text */
.main-col h1{font-size:32px !important;margin-bottom:18px}
.main-col h2{font-size:22px !important;margin-bottom:12px}
.main-col h3{font-size:18px !important;margin-bottom:10px}

@media (max-width:860px){
  .header-inner{flex-wrap:wrap}
  .nav-toggle{display:block}
  nav{width:100%;display:none;flex-direction:column;background:transparent;margin-top:8px}
  nav a{display:block;padding:10px 12px;margin:0;border-radius:8px}
  nav.show{display:flex}
  main{margin:24px 12px;padding:20px 16px}
  .layout{flex-direction:column}
  .side-col{width:auto}
  footer .container{flex-direction:column;align-items:flex-start}
}

@media (max-width:480px){
  .brand{font-size:1.375rem}
  .hero-content h1{font-size:1.8rem}
}