html { scroll-behavior: smooth; }

.content-section {
  max-width: 1400px;
  margin: 18px auto 60px;
  padding: 0 20px 40px;
}

.content-section .content-navigation {
  box-sizing: border-box;
  margin: 0 0 20px;
  padding: 24px 26px;
  border: 1px solid rgba(0,255,136,.26);
  border-radius: 18px;
  background:
    radial-gradient(circle at top right, rgba(0,255,136,.10), transparent 38%),
    linear-gradient(135deg, rgba(63,70,210,.28), rgba(12,18,48,.90));
  box-shadow: 0 16px 38px rgba(0,0,0,.26),
              inset 0 1px 0 rgba(255,255,255,.05);
}

.content-section .content-navigation h2 {
  margin: 0 0 15px;
  color: #00ff88;
  font-size: 26px;
  line-height: 1.25;
}

.content-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.content-nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  box-sizing: border-box;
  padding: 8px 13px;
  border: 1px solid rgba(0,255,136,.38);
  border-radius: 11px;
  background: linear-gradient(135deg, rgba(0,255,136,.10), rgba(61,68,205,.16));
  color: #fff;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.3;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease,
              background 160ms ease, box-shadow 160ms ease;
}

.content-nav-links a:hover,
.content-nav-links a:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(0,255,136,.72);
  background: linear-gradient(135deg, rgba(0,255,136,.18), rgba(61,68,205,.24));
  box-shadow: 0 8px 20px rgba(0,255,136,.10);
  outline: none;
}

.content-section .content-wrapper {
  display: block !important;
  column-count: 2;
  column-gap: 20px;
}

.content-section .content-wrapper > .content-block {
  position: relative;
  display: inline-block !important;
  width: 100%;
  height: auto !important;
  min-height: 0 !important;
  box-sizing: border-box;
  break-inside: avoid;
  margin: 0 0 20px;
  padding: 26px 28px;
  overflow: hidden;
  vertical-align: top;
  border: 1px solid rgba(0,255,136,.18);
  border-radius: 18px;
  background:
    radial-gradient(circle at top right, rgba(0,255,136,.07), transparent 34%),
    linear-gradient(145deg, rgba(55,61,188,.26), rgba(11,17,45,.92));
  box-shadow: 0 14px 34px rgba(0,0,0,.24),
              inset 0 1px 0 rgba(255,255,255,.045);
  transition: transform 180ms ease, border-color 180ms ease,
              box-shadow 180ms ease;
}

.content-section .content-wrapper > .content-block::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(0,255,136,.95), rgba(80,109,255,.82));
}

.content-section .content-wrapper > .content-block:hover {
  transform: translateY(-2px);
  border-color: rgba(0,255,136,.34);
  box-shadow: 0 18px 42px rgba(0,0,0,.30),
              0 0 24px rgba(0,255,136,.055);
}

.content-section .content-wrapper > .content-block:target {
  border-color: rgba(0,255,136,.82);
  box-shadow: 0 0 0 2px rgba(0,255,136,.20),
              0 18px 42px rgba(0,0,0,.30);
}

.content-section .content-block[id] { scroll-margin-top: 120px; }

.content-section .content-block h2,
.content-section .content-block h3 {
  color: #00ff88;
  line-height: 1.28;
}

.content-section .content-block h2 {
  margin: 0 0 14px;
  font-size: 26px;
}

.content-section .content-block h3 {
  margin: 20px 0 10px;
  font-size: 19px;
}

.content-section .content-block p,
.content-section .content-block li {
  color: rgba(255,255,255,.89);
  font-size: 16px;
  line-height: 1.72;
  overflow-wrap: anywhere;
}

.content-section .content-block p { margin: 0 0 12px; }

.content-section .content-block p:last-child,
.content-section .content-block ul:last-child,
.content-section .content-block ol:last-child { margin-bottom: 0; }

.content-section .content-block ul,
.content-section .content-block ol {
  margin: 0 0 14px 22px;
  padding: 0;
}

.content-section .content-block li + li { margin-top: 8px; }

@media (max-width: 900px) {
  .content-section .content-wrapper { column-count: 1; }
}

@media (max-width: 520px) {
  .content-section { padding: 0 14px 28px; }

  .content-section .content-navigation,
  .content-section .content-wrapper > .content-block {
    padding: 20px 18px;
    border-radius: 15px;
  }

  .content-section .content-navigation h2,
  .content-section .content-block h2 { font-size: 22px; }

  .content-nav-links {
    display: grid;
    grid-template-columns: 1fr;
  }

  .content-nav-links a { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .content-nav-links a,
  .content-section .content-wrapper > .content-block { transition: none; }
}