:root {
  --sidebar-w: 240px;
  --accent: #5b63e6;
  --bg1: #C4C8F2;
  --bg2: #dfe1f9;
  --bg3: #ffffff;
  --card-bg: rgba(255,255,255,0.92);
  --sidebar-bg: rgba(255,255,255,0.95);
  --text: #0b1220;
  --muted: #6b7280;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0px;
  font-family: Segoe, UI, Arial, sans-serif;
  background: rgba(0, 0, 0, 0) linear-gradient(135deg, #c4c8f2 0%, #dfe1f9 40%, white 100%) repeat scroll 0% 0%;
  color: var(--text);
}

.layout {
  min-height: 100vh;
  display: block;
}

.sidebar {
  position: fixed;
  left: 0px;
  top: 0px;
  bottom: 0px;
  width: var(--sidebar-w);
  padding: 28px;
  background: var(--sidebar-bg);
  border-right: 1px solid rgba(11, 18, 34, 0.04);
}

.brand {
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 18px;
}

.nav {
  margin-top: 6px;
}

.nav a {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 6px;
  font-weight: 600;
}

.nav a svg {
  flex: 0 0 18px;
  opacity: 0.95;
}

.nav a:hover {
  background: rgba(91, 99, 230, 0.09) none repeat scroll 0% 0%;
  color: var(--accent);
}

.nav a.active {
  background: rgba(91, 99, 230, 0.14) none repeat scroll 0% 0%;
  color: var(--accent);
}

.main {
  margin-left: var(--sidebar-w);
  padding: 40px;
}

.card {
  max-width: 1200px;
  margin: 0px auto;
  background: var(--card-bg);
  padding: 30px;
  border-radius: var(--radius);
box-shadow: 0px 14px 40px rgba(8, 15, 40, 0.06);
  border: 1px solid rgba(11, 18, 34, 0.04);
}

#site-title {
  font-size: 28px;
  margin: 0px 0px 14px;
  text-align: center;
  font-weight: 700;
}

.columns-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.columns-table col {
  width: 33.3333%;
}

.columns-table td {
  vertical-align: top;
  padding: 12px;
  border: 0px none;
}

.card .content {
  font-family: Segoe, UI, Arial, sans-serif;
  line-height: 1.7;
  color: var(--text);
  font-size: 16px;
}

.card .content p {
  margin: 10px 0px;
}

.card img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 14px auto;
  border-radius: 10px;
box-shadow: 0px 10px 30px rgba(10, 20, 40, 0.06);
}

@media ( max-width : 900px ) {
  .main {
    padding: 20px;
    margin-left: 0px;
  }
  .sidebar {
    position: relative;
    width: 100%;
    height: auto;
    border-right: 0px none;
    padding: 12px;
    display: flex;
    align-items: center;
  }
  .nav a span {
    display: none;
  }
  .columns-table, .columns-table tr, .columns-table td, .columns-table col {
    display: block;
    width: 100%;
  }
  .columns-table td {
    padding: 10px 0px;
  }
}

big:hover {
  font-size: smaller;
}

#site-title:hover {
  text-align: center;
}