:root{
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --card: #ffffff;
  --shadow: 0 10px 30px rgba(0,0,0,.06);
  --shadow-sm: 0 6px 18px rgba(0,0,0,.06);
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body{
  margin: 0;
  background: radial-gradient(1200px 600px at 15% -10%, rgba(17,24,39,.06), transparent 60%),
              radial-gradient(900px 500px at 95% 0%, rgba(17,24,39,.05), transparent 55%),
              var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.65;
}

a { color: inherit; }

.container{
  max-width: 980px;
  margin: 0 auto;
  padding: 34px 22px 70px;
}

header{
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

h1{
  margin: 0;
  font-size: 44px;
  letter-spacing: -0.04em;
}

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

.nav{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 28px;
}

.nav-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;           /* makes “buttons” bigger than text */
  min-height: 44px;             /* touch-friendly, never smaller than text */
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  background: rgba(255,255,255,.75);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
  transition: transform .08s ease, box-shadow .12s ease, border-color .12s ease;
}

.nav-btn:hover{
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(17,24,39,.18);
}

.nav-btn:active{
  transform: translateY(0px);
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
}

main{
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.section{
  background: rgba(255,255,255,.85);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

h2{
  margin: 0 0 10px;
  font-size: 22px;
  letter-spacing: -0.02em;
}

p{ margin: 0 0 12px; }
p:last-child{ margin-bottom: 0; }

ul{
  margin: 8px 0 0;
  padding-left: 20px;
}
li{ margin: 6px 0; }

.card{
  background: rgba(255,255,255,.92);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.card h3{
  margin: 0 0 8px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.meta{
  color: var(--muted);
  font-size: 14px;
}

.links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.link-pill{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 12px;
  min-height: 44px;            /* also button-size */
  border-radius: 12px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-weight: 600;
  background: rgba(255,255,255,.75);
  transition: transform .08s ease, box-shadow .12s ease, border-color .12s ease;
}

.link-pill:hover{
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(17,24,39,.18);
}

.footer-note{
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}