/* ==========================================================================
   features/index/index.css — トップ案内画面専用スタイル
   ========================================================================== */

.welcome-container {
  max-width: 960px;
  margin: 32px auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.welcome-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  padding: 40px 36px;
  border-radius: 20px;
  margin-bottom: 32px;
  box-shadow: 0 12px 30px -5px rgba(15, 23, 42, 0.25);
  box-sizing: border-box;
}

.welcome-hero h1 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 14px 0;
  color: #ffffff;
  line-height: 1.35;
}

.welcome-hero p {
  font-size: 15px;
  line-height: 1.75;
  color: #cbd5e1;
  margin: 0 0 28px 0;
}

.start-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #e6006f;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 12px;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(230, 0, 111, 0.35);
  transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.start-btn:hover {
  background: #c4005e;
  box-shadow: 0 6px 20px rgba(230, 0, 111, 0.45);
  transform: translateY(-1px);
}

.start-btn:active {
  transform: translateY(0);
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.step-box {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 13px;
  color: #e2e8f0;
  line-height: 1.5;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.step-box:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

.step-box strong {
  display: block;
  color: #ffffff;
  font-size: 15px;
  margin-bottom: 6px;
}