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

body {
  background-color: #FAFAF8;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: #222;
  line-height: 1.7;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 24px;
}

/* 헤더 */
.hero {
  text-align: center;
  padding: 60px 0 80px;
  border-bottom: 1px solid #e5e5e0;
  margin-bottom: 60px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.tagline {
  font-size: 1.25rem;
  color: #666;
  font-weight: 500;
}

/* 섹션 */
section {
  margin-bottom: 64px;
}

h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid #222;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 32px 0 16px;
}

h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

p {
  margin-bottom: 16px;
  color: #333;
}

/* 인용구 */
blockquote {
  border-left: 4px solid #222;
  padding: 8px 20px;
  margin: 20px 0;
  background-color: #f0f0eb;
  color: #555;
  font-style: italic;
}

/* 리스트 */
.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  padding: 12px 0;
  border-bottom: 1px solid #ececea;
}

.feature-list li:last-child {
  border-bottom: none;
}

/* 아이템 그리드 */
.item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.item-card {
  background-color: #fff;
  border: 1px solid #e5e5e0;
  border-radius: 8px;
  padding: 20px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.item-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.item-card p {
  font-size: 0.95rem;
  color: #555;
  margin: 0;
}

/* 테이블 */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  background-color: #fff;
  border: 1px solid #e5e5e0;
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid #ececea;
}

th {
  background-color: #f0f0eb;
  font-weight: 600;
}

tr:last-child td {
  border-bottom: none;
}

/* 키보드 키 스타일 */
kbd {
  display: inline-block;
  padding: 3px 8px;
  background-color: #f0f0eb;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 0.85em;
  box-shadow: 0 1px 0 #ccc;
  margin: 0 2px;
}

/* 이미지/영상 자리 표시 */
.image-placeholder,
.video-placeholder {
  background-color: #f0f0eb;
  border: 2px dashed #ccc;
  border-radius: 8px;
  padding: 60px 20px;
  text-align: center;
  color: #888;
  margin: 20px 0;
  font-size: 0.95rem;
}

/* 푸터 */
footer {
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid #e5e5e0;
  text-align: center;
  color: #888;
  font-size: 0.9rem;
}

/* 반응형 */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .container {
    padding: 40px 16px;
  }

  table {
    font-size: 0.9rem;
  }

  th, td {
    padding: 10px 12px;
  }
}