:root{
  --bg1: #eef6ff;
  --bg2: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --card: rgba(255,255,255,.78);
  --border: rgba(15, 23, 42, .08);
  --shadow: 0 10px 30px rgba(2, 8, 23, .08);
  --pill: rgba(15,23,42,.06);
  --pillActive: rgba(37, 99, 235, .12);
  --link: #2563eb;
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 15% 10%, #dbeafe 0%, transparent 60%),
    radial-gradient(1000px 500px at 85% 0%, #e0f2fe 0%, transparent 55%),
    linear-gradient(180deg, var(--bg1), var(--bg2));
}

.container{
  max-width: 980px;
  margin: 0 auto;
  padding: 0 18px;
}

.topbar{
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.6);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

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

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color:inherit;
}

.logo{
  width: 72px;
  height: 72px;
  object-fit: contain;
  display: block;
}

.brand-name{
  font-weight: 800;
  font-size: 20px;
  letter-spacing: .3px;
}


.nav{
  display:flex;
  gap:10px;
}

.nav-pill{
  text-decoration:none;
  color: var(--text);
  background: var(--pill);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
}

.nav-pill.active{
  background: var(--pillActive);
  border-color: rgba(37,99,235,.25);
}

.card{
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 18px;
}

.hero{
  margin: 26px 0 18px;
  padding: 28px;
}

h1{
  margin: 0 0 10px;
  font-size: 40px;
  line-height: 1.1;
}

.subtitle{
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 16px;
  max-width: 60ch;
}

.grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mini-card{
  background: rgba(255,255,255,.72);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.mini-title{
  font-weight: 800;
  margin-bottom: 10px;
}

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

.mini-text{
  margin: 0;
  color: var(--muted);
}

.page{
  margin: 26px 0 18px;
  padding: 26px;
}

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

.section-card{
  margin-top: 14px;
  background: rgba(255,255,255,.72);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

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

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

.link{
  color: var(--link);
  text-decoration: none;
  font-weight: 700;
}

.link:hover{
  text-decoration: underline;
}

.footer{
  margin-top: 26px;
  padding: 18px 0 26px;
  color: var(--muted);
}

.footer-inner{
  display:flex;
  gap: 10px;
  align-items:center;
}

.footer a{
  color: var(--muted);
  text-decoration:none;
  font-weight:600;
}

.footer a:hover{ text-decoration: underline; }
.sep{ opacity:.6; }

@media (max-width: 720px){
  h1{ font-size: 30px; }
  .grid{ grid-template-columns: 1fr; }
}