:root {
  --bg0: #0b1020;
  --bg1: #121a2f;
  --ink: #e8eefc;
  --muted: #9aa8c7;
  --accent: #3d7eff;
  --line: rgba(232, 238, 252, 0.12);
  --card: rgba(18, 26, 47, 0.92);
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 126, 255, 0.28), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(80, 200, 180, 0.12), transparent 50%),
    linear-gradient(180deg, var(--bg0), #070b14 70%);
}

.shell { max-width: 1100px; margin: 0 auto; padding: 28px 20px 48px; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.brand { display: flex; gap: 14px; align-items: center; }
.mark {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, #3d7eff, #1f4fbf);
  font-weight: 700; font-size: 1.25rem;
}
h1 { margin: 0; font-size: 1.45rem; letter-spacing: 0.02em; }
.tag { margin: 2px 0 0; color: var(--muted); font-size: 0.85rem; }
.hero-search { margin: 28px 0 18px; }
#search {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(7, 11, 20, 0.65);
  color: var(--ink);
  font-size: 1rem;
}
.row h2 { font-size: 0.95rem; color: var(--muted); font-weight: 600; margin: 22px 0 10px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.card {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 14px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 140px;
}
.card-head { display: flex; align-items: center; gap: 10px; }
.card-mark {
  width: 28px; height: 28px; border-radius: 8px; flex-shrink: 0;
  display: grid; place-items: center;
  font-weight: 800; font-size: 0.85rem; color: #fff;
  background: radial-gradient(circle at 35% 25%, rgba(0, 209, 255, 0.95), rgba(47, 128, 237, 0.7) 38%, rgba(3, 7, 18, 0.9) 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.25), 0 0 10px rgba(0,209,255,0.22);
}
.card h3 { margin: 0; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.85rem; flex: 1; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
button, .btn {
  border: 0;
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
  font-weight: 600;
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-size: 0.85rem;
}
button.ghost, .btn.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
}
.foot {
  margin-top: 36px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.85rem;
}
.foot a { color: var(--ink); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

@media (max-width: 640px) {
  html, body { overflow-x: hidden; }
  .shell { padding: 18px 14px 36px; }
  .top {
    flex-wrap: wrap;
    align-items: flex-start;
  }
  .account .ghost,
  button,
  .btn {
    min-height: 44px;
    padding: 10px 14px;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  #search {
    min-height: 48px;
    font-size: 1rem;
  }
  .foot {
    gap: 8px 12px;
  }
}