*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f3f3f3;
  --surface: #ffffff;
  --border: #e1e1e1;
  --text: #242424;
  --text-2: #616161;
  --text-3: #a0a0a0;
  --accent: #0f6cbd;
  --accent-dark: #0c5aa6;
  --radius: 4px;
  --radius-lg: 8px;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hub { min-height: 100vh; display: flex; flex-direction: column; }

.hub-header {
  background: #0f6cbd;
  padding: 16px 32px;
}
.hub-brand {
  display: flex; align-items: center; gap: 10px;
  color: #fff; font-size: 17px; font-weight: 600;
}
.hub-brand i { font-size: 18px; }

.hub-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
}

.hub-title { font-size: 26px; font-weight: 600; color: var(--text); margin-bottom: 6px; text-align: center; }
.hub-subtitle { font-size: 14px; color: var(--text-2); margin-bottom: 36px; text-align: center; }

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  width: 100%;
  max-width: 880px;
}

.hub-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  text-decoration: none;
  color: var(--text);
  position: relative;
  transition: all 0.15s;
}
.hub-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  transform: translateY(-1px);
}
.hub-card--placeholder {
  cursor: default;
  opacity: 0.6;
  border-style: dashed;
}
.hub-card--placeholder:hover { transform: none; box-shadow: none; border-color: var(--border); }

.hub-card-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.icon-blue { background: #dce9f9; color: #0c5aa6; }
.icon-purple { background: #ede9fe; color: #5b21b6; }
.icon-gray { background: #f0f0f0; color: #a0a0a0; }

.hub-card-text h2 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.hub-card-text p { font-size: 12.5px; color: var(--text-2); line-height: 1.4; }

.hub-card-arrow {
  position: absolute;
  top: 22px; right: 18px;
  color: var(--text-3);
  font-size: 13px;
  opacity: 0;
  transition: opacity 0.15s;
}
.hub-card:hover .hub-card-arrow { opacity: 1; color: var(--accent); }

@media (max-width: 600px) {
  .hub-main { padding: 40px 16px; }
  .hub-title { font-size: 22px; }
}

.hub-card-img { width: 26px; height: 26px; object-fit: contain; }