@charset "utf-8";

/* 横揺れ防止 */
html, body {
  overflow-x: hidden;
  width: 100%;
}

/* ============ カラートークン（オレンジ系テーマ） ============ */
:root {
  --c-primary:        #F2752A;
  --c-primary-rgb:    242, 117, 42;
  --c-primary-dark:   #C7501A;
  --c-primary-light:  #FFF0E5;
  --c-primary-mid:    #FFE2CC;
  --c-hero-end:       #FFF0E5;
  --c-hero-border:    #FFE2CC;
}

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

body {
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  background: #F4F7FC;
  color: #333333;
  line-height: 1.7;
}


/* 親要素 */
.container {
 display: grid;
  grid-template-columns: 300px 1fr;
  align-items: start;
}

/* ============ 右の本文 ============ */
.main {
  padding: 40px 48px 72px;
  max-width: 1100px;
}

.hero {
  background: linear-gradient(135deg, #FFFFFF 0%, var(--c-hero-end) 100%);
  border: 1px solid var(--c-hero-border);
  border-radius: 20px;
  padding: 40px 44px;
}

.category {
  display: inline-block;
  background: var(--c-primary-mid);
  color: var(--c-primary-dark);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
}

.hero h1 {
  font-size: 32px;
  color: #22304F;
  line-height: 1.4;
  margin-bottom: 12px;
}

.hero p {
  color: #5A6478;
  font-size: 15px;
  max-width: 620px;
}

.btn {
  display: inline-block;
  margin-top: 26px;
  background: var(--c-primary);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 14px;
  padding: 13px 30px;
  border-radius: 10px;
  text-decoration: none;
  box-shadow: 0 6px 16px rgba(var(--c-primary-rgb), 0.3);
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(var(--c-primary-rgb), 0.36);
}

.section {
  margin-top: 48px;
}

.section-title {
  font-size: 20px;
  font-weight: 700;
  color: #22304F;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 50px;
}
.related-section-title {
    font-size: 20px;
  font-weight: 700;
  color: #22304F;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 50px;
}
.section-title::before {
  content: "";
  width: 6px;
  height: 20px;
  border-radius: 3px;
  background: var(--c-primary);
}
.related-section-title::before {
  content: "";
  width: 6px;
  height: 20px;
  border-radius: 3px;
  background: blue;
}

.section-title:first-child {
  margin-top: 0;
}
.section-sub {
  font-size: 13px;
  color: #8A94A6;
  margin: 6px 0 20px 16px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: #FFFFFF;
  border: 1px solid #E9EDF4;
  border-radius: 16px;
  padding: 26px 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}


.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 16px;
  color: #22304F;
  margin-bottom: 8px;
}

.card p {
  font-size: 16px;
  color: #5A6478;
}

.related-grid {
  list-style: none;
  background: #FFFFFF;
  border: 1px solid #E9EDF4;
  border-radius: 16px;
  overflow: hidden;
}

.related-grid li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  font-size: 14px;
  color: #4A5568;
}

.related-grid li + li {
  border-top: 1px solid #F0F3F9;
}

.related-grid .category {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-primary-dark);
  background: var(--c-primary-light);
  padding: 3px 12px;
  border-radius: 999px;
}

/* ============ レスポンシブ ============ */
@media (max-width: 960px) {
  .cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    max-height: 460px;
    border-right: none;
    border-bottom: 1px solid #E7ECF4;
  }

  .logo {
    padding: 16px 20px;
  }

  .aside_menu {
    padding: 10px 12px 14px;
    margin-top: 0;
  }

  .main {
    margin-left: 0;
    padding: 24px 20px 48px;
  }

  .hero {
    padding: 28px 24px;
  }

  .hero h1 {
    font-size: 24px;
  }
}