.trial-info {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  background: #fff;
  color: #111;
  border: 1px solid #ddd;
  border-radius: 12px;
  padding: 20px 22px;
  margin: 24px 0;
  max-width: 540px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

/* ---- タイトル ---- */
.trial-info .trial-title {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #000;
  border-bottom: 1px solid #eee;
  padding-bottom: 6px;
}

/* ---- 本文 ---- */
.trial-info p {
  margin: 10px 0;
  line-height: 1.7;
  color: #222;
}

.trial-info strong {
  font-weight: 600;
  color: #555;
}

/* ---- モノスペース ---- */
.trial-info .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  letter-spacing: 0.02em;
  color: #000;
}

/* ---- ボタン ---- */
.trial-info .btn-plain {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 14px;
  background: #f9f9f9;
  color: #111;
  border: 1px solid #ccc;
  border-radius: 10px;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.trial-info .btn-plain:hover {
  background: #eee;
  border-color: #bbb;
}

.trial-info .btn-plain:active {
  background: #ddd;
  border-color: #aaa;
}

.trial-info .btn-plain:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---- アクセシビリティ ---- */
.trial-info :focus {
  outline: 2px solid #000;
  outline-offset: 3px;
}

/* ---- レスポンシブ ---- */
@media (max-width: 480px) {
  .trial-info {
    padding: 16px 16px;
    border-radius: 10px;
  }
  .trial-info p {
    margin: 8px 0;
  }
  .trial-info .btn-plain {
    width: 100%;
  }
}