/************************************
** 基本のCSS
************************************/
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  background: #f8f8f8;
  color: #333;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  position: relative;
  width: 100vw;
  height: 100vh;
  background: url('https://d3ebzbiq49395a.cloudfront.net/prod/course/cff7628d08e32d22c3458e3f2ea4a013e20468c884809d5b220bc3067b6efe09.png') no-repeat center center;
  background-size: cover;
  overflow: hidden;
}

.overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  /* 少し暗くする */
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-content {
  text-align: center;
  color: #fff;
  padding: 2rem;
  z-index: 1;
  max-width: 90%;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 2.8rem;
  margin-bottom: 10px;
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  background: #ff811a;
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  border-radius: 5px;
}

.about, .instructor, .cta {
  background: #fff;
  margin-top: 20px;
  padding: 40px 0;
}

.about ul {
  list-style: none;
  padding: 0;
}

.about li {
  margin-bottom: 10px;
}

.notice {
  background-color: rgba(255, 255, 255, 0.9);
  color: #cd5c5c;
  font-weight: bold;
  padding: 10px 15px;
  border-left: 5px solid #cd5c5c;
  margin: 20px auto;
  max-width: 600px;
  font-size: 1rem;
  border-radius: 4px;
}

footer {
  text-align: center;
  padding: 20px;
  background: #eee;
}


@media (max-width: 600px) {
  .hero-content h1 {
    font-size: 1.8rem;
  }

  .hero-content p {
    font-size: 1rem;
  }
}

/************************************
** 各セクションを2カラム化
************************************/

.section-flex {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.section-image img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 8px;
}

.section-text {
  flex: 1;
  min-width: 280px;
}

@media (max-width: 768px) {
  .section-flex {
    flex-direction: column;
    text-align: center;
  }

  .section-text {
    padding: 0 1rem;
  }
}

/************************************
** 提供価値一覧
************************************/
.option-overview {
  background: #fff;
  margin-top: 20px;
  padding: 40px 0;
}

.option-overview h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.option-table {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.option-table.one-column {
  flex-direction: column;
  align-items: center;
}

.option-table.two-columns {
  flex-direction: row;
  justify-content: center;
}

.option-column {
  flex: 1;
  min-width: 280px;
  max-width: 420px;
  background: #f3f3f3;
  border-radius: 8px;
  padding: 20px;
}

.option-column h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #333;
  padding-left: 10px;
}

.option-column ul,
.option-table.one-column ul {
  list-style: disc inside;
  padding-left: 0;
}

.option-column ul li,
.option-table.one-column ul li {
  margin-bottom: 8px;
  font-size: 1rem;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .option-table.two-columns {
    flex-direction: column;
    align-items: center;
  }
}

/************************************
** CTAボタン
************************************/
.cta-button-wrapper {
  text-align: center;
  margin-top: 30px;
}

.cta-button {
  display: inline-block;
  background: #ff811a;
  color: #fff;
  font-size: 1.2rem;
  font-weight: bold;
  padding: 1rem 2.5rem;
  border-radius: 6px;
  text-decoration: none;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
  background: #ff811a;
  transform: translateY(-2px);
}

/************************************
** コースページ（single-course.php）
************************************/
.tutor-course-header-visual {
  width: 100%;
  height: 200px;
  background-image: url('https://d3ebzbiq49395a.cloudfront.net/prod/course/cff7628d08e32d22c3458e3f2ea4a013e20468c884809d5b220bc3067b6efe09.png');
  /* ← お好きな画像URLに置き換えてください */
  background-size: cover;
  background-position: center;
  margin-bottom: 80px;
}