@charset "UTF-8";

/* ---------- base ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Noto Sans JP', sans-serif;
}

body {
  background-color: #121212;
  color: #ffffff;
  font-family: 'Helvetica Neue', sans-serif;
  margin: 0;
  padding: 0;
}

.hero-header {
  background-image: url('../img/kv13.jpg'); /* 顔出し画像などに差し替え可 */
  background-size: cover;
  background-position: center;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  position: relative;
}

.hero-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6); /* 背景を少し暗くするフィルター */
  z-index: 1;
}

.hero-title {
  position: relative;
  z-index: 2;
}

.hero-title p {
  margin: 0.5rem 0;
}

.line1 {
  font-size: 1.8rem;
}

.line2 {
  font-size: 2.8rem;
  font-weight: bold;
  color: #53c451;
}

.line3 {
  font-size: 2rem;
}

.subtext {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  color: #eee;
  line-height: 1.6;
}

.subtext .highlight {
  font-size: 28px;
  font-weight: bold;
  color: #ffffff;
  background: linear-gradient(transparent 70%, #53c451 30%);
  padding: 0 0.3rem;
}

section {
  padding: 3rem 1.5rem;
  max-width: 900px;
  margin: auto;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.card {
  background-color: #fff;
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 4px 10px rgba(0, 255, 136, 0.2);
  text-align: center;
  color: #000;
}

.card img {
  width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

.card h3 {
  margin-bottom: 0.5rem;
  color: #53c451;
  }

.cta {
  text-align: center;
  margin-top: 3rem;
  margin-bottom: 3rem;
}

.cta a {
  display: inline-block;
  background-color: #fff;
  color: #121212;
  padding: 1rem 2rem;
  border-radius: 2rem;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

.cta a:hover {
  background-color: #53c451;
  color: #000;
}

.write-inner{
  padding-top: 2rem;
}

footer{
  text-align: center;
}

@media (max-width: 600px) {
  header h1 {
    font-size: 2rem;
  }

  header p {
    font-size: 1rem;
  }
}