* { box-sizing: border-box; }
html, body {
  height: 100%;
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: #1f2937;
  background: #f8fafc;
}
.container-center {
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  justify-content: center;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  width: min(1000px, 100%);
}
.card, .btn {
  border-radius: 16px;
  padding: 16px 20px;
  border: 1px solid #e5e7eb;
  background: white;
  text-decoration: none;
  text-align: center;
  transition: transform .08s ease, box-shadow .2s ease, background .2s, color .2s;
  box-shadow: 0 1px 2px rgba(0,0,0,.06);
}
.btn-primary {
  background: #065f46;
  color: white;
  border: none;
}
.btn-secondary {
  background: #0ea5e9;
  color: white;
  border: none;
}
.btn:hover, .card:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(0,0,0,.08); }
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid #e5e7eb;
  background: white;
  position: sticky;
  top: 0;
}
.title { font-size: clamp(20px, 3vw, 28px); font-weight: 700; margin: 0; }
.back {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-radius: 999px; background: #f1f5f9; text-decoration: none; color: #111827;
  border: 1px solid #e5e7eb;
}
.back:hover { background: #e2e8f0; }
.content { padding: 20px; }
.media {
  display: grid; gap: 12px;
}
img, video {
  max-width: 100%; border-radius: 12px; height: auto;
  border: 1px solid #e5e7eb; background: #fff;
}
.footer-note { color: #64748b; font-size: 12px; text-align: center; margin: 24px 0; }
.brand-highlight { color: #16a34a; }
.note { color: #334155; }
.small { font-size: 13px; color: #64748b; }