/* ===== 히어로 섹션 ===== */
.hero {
  background: linear-gradient(135deg, 
    #ff6b9d 0%, 
    #c44dff 30%, 
    #8e44ad 60%, 
    #6a4c93 100%);
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  text-align: center;
  padding: 0;
  position: static !important;
  isolation: isolate;
  -webkit-transform: none !important;
  transform: none !important;
  -webkit-backface-visibility: visible;
  backface-visibility: visible;
  will-change: auto;
  -webkit-overflow-scrolling: auto;
  contain: layout style;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hero .container {
  background: none !important;
  background-color: transparent !important;
  background-image: none !important;
  position: relative;
  overflow: visible;
  isolation: isolate;
}

/* ===== 히어로 섹션 이미지 스타일 (3중 그림자 효과 적용) ===== */
.hero img {
  max-width: 500px;
  /* 3중 그림자로 깊이감 강화 */
  filter:
          drop-shadow(0 30px 60px rgba(255, 255, 255, 0.4))
          drop-shadow(0 20px 40px rgba(255, 255, 255, 0.5))
          drop-shadow(0 8px 20px rgba(255, 255, 255, 0.6));
  position: relative;
  margin: 50px 0 40px 0;
  animation: floatImage 3s ease-in-out infinite;
  background-color: transparent !important;
  border: none !important;
  object-fit: contain;
  -webkit-appearance: none;
  image-rendering: crisp-edges;
  image-rendering: optimizeQuality;
  z-index: 2;
  pointer-events: auto;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: transform;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: stretch;
  max-width: 400px;
  margin: 0 auto 60px auto;
  width: 100%;
}

.hero-buttons .btn {
  flex: 1 1 0;
  min-width: 0;
  border-radius: 30px;
  padding: 12px 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  min-height: 48px;
  font-size: 1rem;
  box-sizing: border-box;
  white-space: nowrap;
  position: relative;
  text-align: center;
  line-height: 1.2;
}

.hero-buttons .btn-primary {
  background: #fff;
  color: var(--purple-dark);
}

.hero-buttons .btn-secondary {
  background: rgba(255,255,255,0.13);
  color: #fff;
  border: 2px solid #fff;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.tutorial-btn {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  text-align: center !important;
}