/* ======================
   Base
====================== */
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, "Noto Sans JP", sans-serif;
  background: #f4f6f9;
  color: #222;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* ======================
   Layout
====================== */
.main {
  padding: 60px 16px;
}

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

/* ======================
   Card
====================== */
.card {
  background: #fff;
  border-radius: 14px;
  padding: 42px 46px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
  border: 1px solid rgba(0,0,0,0.04);
}

@media (max-width: 640px) {
  .card {
    padding: 26px 20px;
  }
}

/* ======================
   Header
====================== */
.about-header {
  text-align: center;
  margin-bottom: 34px;
  padding-bottom: 18px;
  border-bottom: 1px solid #eee;
}

.about-header::after {
  content: "";
  display: block;
  width: 46px;
  height: 3px;
  margin: 14px auto 0;
  background: linear-gradient(90deg, #2b6cb0, #6ea8ff);
  border-radius: 2px;
}

.about-title {
  margin: 0;
  font-weight: 700;
  font-size: 34px;
  letter-spacing: 0.04em;
  color: #1a3e72;
  line-height: 1.3;
}

.title-main,
.title-sub {
  font-size: inherit;
  color: inherit;
  font-weight: inherit;
}

.title-sub {
  margin-left: 4px;
}

@media (max-width: 640px) {
  .about-title {
    font-size: 26px;
  }
}


/* ======================
   Body Text
====================== */
.about-body p {
  margin-bottom: 18px;
}

/* ======================
   Section Title
====================== */
.section-title {
  font-size: 20px;
  margin: 30px 0 14px;
  padding-left: 10px;
  border-left: 4px solid #2b6cb0;
}

/* ======================
   Feature List
====================== */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 6px;
}

.feature-item {
  display: flex;
  gap: 16px;
  padding: 16px 18px;
  margin-bottom: 12px;
  border-radius: 10px;
  background: #fafbfe;
  transition: 0.2s;
}

.feature-item:hover {
  background: #f1f5ff;
  transform: translateY(-1px);
}

.feature-icon {
  width: 38px;
  height: 38px;
  min-width: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #e9f0ff;
  border-radius: 8px;
  color: #2b6cb0;
}

.feature-icon svg {
  width: 20px;
  height: 20px;
}

.feature-text p {
  margin: 4px 0 0;
  font-size: 14.5px;
  color: #444;
}

.feature-title {
  font-weight: 600;
  color: #1a3e72;
}

@media (max-width: 640px) {
  .feature-item {
    padding: 14px;
  }
}

/* ======================
   CTA Box
====================== */
.cta-box {
  margin: 28px 0;
  padding: 22px;
  background: #f1f6ff;
  border-radius: 10px;
  text-align: center;
}

.btn-primary {
  display: inline-block;
  margin-top: 10px;
  padding: 12px 22px;
  background: #2b6cb0;
  color: #fff;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  transition: 0.2s;
}

.btn-primary:hover {
  background: #1f4e85;
}

/* ======================
   Note
====================== */
.about-note {
  margin-top: 24px;
  font-size: 14px;
  color: #666;
}