:root{
  --bg: #ffffff;
  --panel: #f6f7f9;
  --text: #111111;
  --muted: #4b5563;
  --line: #e5e7eb;
  --radius: 16px;
  --max: 980px;
  --pad: 16px;
  --shadow: 0 8px 22px rgba(0,0,0,0.08);
  --focus: #111111;
}

*{ box-sizing: border-box; }
html,body{ height: 100%; }

body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a{ color: inherit; }

a:focus-visible{
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 10px;
}

.skip-link{
  position: absolute;
  left: -999px;
  top: 12px;
  background: #111;
  color: #fff;
  padding: 10px 12px;
  border-radius: 10px;
  z-index: 1000;
}
.skip-link:focus{ left: 12px; }

.container{
  width: min(var(--max), calc(100% - 2*var(--pad)));
  margin: 0 auto;
}

.site-header{
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  gap: 14px;
}

.brand{
  display: inline-flex;
  align-items: center;
  text-decoration: none; /* no blue underline */
}

.brand img{
  display: block;
  max-width: 56px;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
}

.top-nav{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.top-nav a{
  text-decoration: none;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 12px;
  color: var(--muted);
}

.top-nav a:hover{
  border-color: var(--line);
  color: var(--text);
  background: #fafafa;
}

.hero{
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 18px;
  padding: 26px 0 10px;
  align-items: start;
}

.hero-text h1{
  margin: 0;
  font-size: clamp(40px, 5vw, 56px);
  letter-spacing: -0.02em;
}

.subtitle{
  margin: 6px 0 12px;
  font-size: 16px;
  color: var(--muted);
}

.lede{
  margin: 0 0 16px;
  font-size: 18px;
  max-width: 62ch;
}

.cta-row{
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 10px 0 10px;
}

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid var(--text);
  background: #111;
  color: #fff;
  text-decoration: none;
  font-weight: 650;
}

.btn.primary:hover{
  opacity: 0.92;
}

.cta.maintenance{
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
}

.card{
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.card h2{
  margin: 0 0 8px;
  font-size: 16px;
}

.card ul{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.card li{ margin: 8px 0; }

.section{
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.section h2{
  margin: 0 0 10px;
  font-size: 18px;
}

.wip{
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
}

.faq details{
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
  background: #fff;
  margin: 10px 0;
}

.faq summary{
  cursor: pointer;
  font-weight: 650;
}

.details-body{
  margin-top: 8px;
  color: var(--muted);
}

.changelog{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.changelog .date{
  font-variant-numeric: tabular-nums;
  font-weight: 650;
  color: var(--text);
}

.small{
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.site-footer{
  border-top: 1px solid var(--line);
  padding: 18px 0 28px;
  margin-top: 18px;
  background: #fafafa;
}

.footer-inner{
  text-align: center;
  display: grid;
  gap: 10px;
}

.footer-links a{
  text-decoration: none;
  padding: 6px 8px;
  border-radius: 10px;
  color: var(--muted);
}

.footer-links a:hover{
  color: var(--text);
  background: #f1f5f9;
}

@media (max-width: 820px){
  .hero{ grid-template-columns: 1fr; }
  .top-nav{ justify-content: flex-start; }
  .brand img{ max-width: 52px; }
}