:root {
  --bg: #070a12;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --text: #eef2ff;
  --muted: #93a0b8;
  --accent: #5eead4;
  --accent-2: #818cf8;
  --amber: #fcd34d;
  --radius: 20px;
  --shadow: 0 22px 55px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  line-height: 1.55;
  background:
    radial-gradient(circle at 12% -10%, rgba(94, 234, 212, 0.13), transparent 42%),
    radial-gradient(circle at 88% 0%, rgba(129, 140, 248, 0.16), transparent 38%),
    var(--bg);
  background-attachment: fixed;
}

a {
  color: inherit;
}

::selection {
  background: rgba(94, 234, 212, 0.3);
  color: #fff;
}

.site-header {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 30px 24px 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 46px;
  height: 46px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 14px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #04121a;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 26px rgba(94, 234, 212, 0.22);
}

.brand-text h1 {
  margin: 0;
  font-size: clamp(1.25rem, 3vw, 1.55rem);
  letter-spacing: 0.09em;
}

.brand-text p {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 22px 24px 56px;
  flex: 1;
}

.intro {
  margin: 0 0 26px;
}

.intro h2 {
  margin: 0 0 6px;
  font-size: clamp(1.45rem, 3.4vw, 2.05rem);
  letter-spacing: -0.01em;
}

.intro p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  gap: 18px;
}

.card {
  --card-opacity: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--surface-strong), var(--surface) 55%, rgba(255, 255, 255, 0.015));
  box-shadow: var(--shadow);
  text-decoration: none;
  overflow: hidden;
  opacity: var(--card-opacity);
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
  animation: rise 0.55s cubic-bezier(0.2, 0.7, 0.3, 1) backwards;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(420px circle at 100% 0%, rgba(94, 234, 212, 0.16), transparent 60%);
  opacity: 0;
  transition: opacity 0.28s ease;
  pointer-events: none;
}

.card > * {
  position: relative;
  z-index: 1;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(94, 234, 212, 0.34);
  box-shadow: 0 26px 65px rgba(0, 0, 0, 0.55);
}

.card:hover::before {
  opacity: 1;
}

.card:hover .card-icon {
  transform: translateY(-2px) scale(1.06) rotate(-3deg);
  border-color: rgba(94, 234, 212, 0.3);
}

.card:hover .card-arrow {
  transform: translate(3px, -3px);
  opacity: 1;
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.card:nth-child(1) { animation-delay: 0.02s; }
.card:nth-child(2) { animation-delay: 0.07s; }
.card:nth-child(3) { animation-delay: 0.12s; }
.card:nth-child(4) { animation-delay: 0.17s; }
.card:nth-child(5) { animation-delay: 0.22s; }
.card:nth-child(6) { animation-delay: 0.27s; }

.card-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  font-size: 1.65rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.055);
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 1.12rem;
  letter-spacing: 0.01em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.card-arrow {
  position: absolute;
  top: 20px;
  right: 20px;
  color: var(--accent);
  font-size: 1.1rem;
  opacity: 0.75;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.card--disabled {
  --card-opacity: 0.75;
  cursor: not-allowed;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.012));
  box-shadow: none;
}

.card--disabled .card-icon {
  filter: grayscale(0.4);
}

.card--disabled:hover {
  transform: none;
  border-color: var(--border);
  box-shadow: none;
}

.card--disabled:hover::before {
  opacity: 0;
}

.card--disabled:hover .card-icon {
  transform: none;
  border-color: var(--border);
}

.badge {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(252, 211, 77, 0.28);
  background: rgba(252, 211, 77, 0.12);
  color: var(--amber);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-footer {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
}

.site-footer p {
  margin: 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: var(--card-opacity);
    transform: translateY(0);
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 22px 18px 6px;
  }

  .container {
    padding: 18px 18px 44px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 13px;
  }

  .grid {
    gap: 14px;
  }

  .card {
    padding: 18px;
  }

  .card-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 14px;
    font-size: 1.5rem;
  }

  .card-arrow {
    top: 18px;
    right: 18px;
  }

  .badge {
    top: 16px;
    right: 16px;
  }

  .site-footer {
    padding: 20px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}