body {
    margin: 0;
    font-family: sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
img, video { max-width: 100%; height: auto; display: block; }


.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: #ffffff;
    border-bottom: 1px solid #ccc;
}

.header-left img {
    height: 60px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.line-button img {
    height: 55px;
}

.youtube-icon img {
    height: 55px;
    width: 55px;
}

@media (max-width: 1024px) {
  .header-content { padding: 10px 16px; }
  .header-left img { height: 50px; }
  .line-button img { height: 48px; }
  .youtube-icon img { height: 44px; width: 44px; }
}

@media (max-width: 768px) {
  .header-content { flex-wrap: wrap; gap: 8px 12px; padding: 8px 12px; }
  .header-left img { height: 44px; }
  .header-right { gap: 10px; }
  .line-button img { height: 40px; }
  .youtube-icon img { height: 38px; width: 38px; }
}

@media (max-width: 480px) {
  .header-left img { height: 40px; }
  .line-button img { height: 36px; }
  .youtube-icon img { height: 34px; width: 34px; }
}

.visually-hidden {
    position: absolute;
    clip: rect(1px, 1px, 1px, 1px);
    padding: 0;
    border: 0;
    height: 1px;
    width: 1px;
    overflow: hidden;
}



.top-visual {
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.top-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

@media (max-width: 768px) {
  .top-visual {
    height: auto;
  }
  .top-visual img {
    width: 100%;
    height: auto;
    object-fit: contain;
  }
}


.index1 {
  text-align: center;
  padding: 40px 20px;
}

.index1-heading {
  font-size: 40px;
  margin-bottom: 30px;
}

.index1-box {
  border: 3px solid #3bb34a;
  border-radius: 10px;
  display: inline-block;
  padding: 20px;
  background-color: #fff;
}

.index1-content {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 40px;
}

.index1-img {
  max-width: 500px;
  height: auto;
}

@media (max-width: 768px) {
  .index1 { padding: 28px 16px; }
  .index1-heading { font-size: 28px; margin-bottom: 18px; }
  .index1-content { flex-direction: column; gap: 20px; }
  .index1-img { max-width: 320px; margin: 0 auto; }
  .index1-box { width: 100%; padding: 16px; }
}

@media (max-width: 480px) {
  .index1-heading { font-size: 24px; }
}


.index2 {
  padding: 60px 20px 70px;
  text-align: center;
  background-color: #fff;
}

.index2-lead {
  font-size: 25px;
  color: #666;
  margin: 0 0 8px;
}

.index2-heading {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0 0 42px;
}

.index2-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 50px 80px;
  align-items: start;
  justify-items: center;
  max-width: 1150px;
  margin: 0 auto;
}

.index2-item {
  max-width: 520px;
}

.index2-illust img {
  width: 100%;
  max-width: 440px;
  height: auto;
  display: block;
  margin: 0 auto 20px;
}

.index2-title {
  font-size: 26px;
  font-weight: 700;
  margin: 12px 0 14px;
}

.index2-text {
  font-size: 16px;
  line-height: 1.9;
  color: #222;
  margin: 0;
}

@media (max-width: 768px) {
  .index2 { padding: 40px 16px 50px; }
  .index2-heading { font-size: 28px; margin-bottom: 28px; }
  .index2-grid { grid-template-columns: 1fr; gap: 36px; }
  .index2-title { font-size: 20px; }
  .index2-text { font-size: 15px; text-align: left; }
  .index2-illust img { max-width: 360px; }
}



.index3 {
  padding: 90px 20px;
  text-align: center;
  background-color: #f7f7f7;
}

.index3-heading {
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.5;
  margin: 0 0 30px;
  font-size: 35px;
}
.index3-heading span {
  display: block;
}

.index3-text {
  max-width: 900px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 2.0;
  color: #333;
}

@media (max-width: 1024px) {
  .index3-heading { font-size: 30px; }
}

@media (max-width: 768px) {
  .index3 { padding: 60px 16px; }
  .index3-heading { font-size: 26px; }
  .index3-text { font-size: 16px; }
}

@media (max-width: 480px) {
  .index3-heading { font-size: 24px; }
}



.index4 {
  padding: 90px 20px;
  background: #f7f7f7;
}

.index4-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 60px;
  align-items: start;
}

.index4-card { 
    text-align: center; 
}

.index4-illust img {
  width: 300px;
  height: 300px;
  object-fit: cover;
  display: block;
  margin: 0 auto 16px;
}

@media (max-width: 1024px) {
  .index4-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 40px; }
}

@media (max-width: 768px) {
  .index4 { padding: 60px 16px; }
  .index4-grid { grid-template-columns: 1fr; gap: 24px; }
  .index4-illust img { width: 220px; height: 220px; }
}



.index5 {
  background: #fff;
  text-align: center;
  padding: 90px 20px 70px;
}

.index5-heading {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.6;
  margin: 0 0 28px;
}

.index5-image {
  max-width: 980px;
  margin: 0 auto 24px;
}

.index5-image img {
  width: 100%;
  height: auto;
  display: block;
}

.index5-boxes {
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: stretch;
  max-width: 1200px;
  margin: 20px auto 0;
  padding: 0 10px;
}

.index5-box {
  flex: 1;
  border: 2px solid #ccc;
  border-radius: 10px;
  background: #fff;
  padding: 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
}

.index5-subheading {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 10px;
  margin-top: 0;
  text-align: center;
}

.index5-text {
  width: 100%;
}

.index5-text p {
  margin: 0 0 12px;
  line-height: 1.9;
  color: #222;
  font-size: 16px;
  text-align: left;
}

@media (max-width: 768px) {
  .index5 { padding: 60px 16px; }
  .index5-heading { font-size: 28px; margin-bottom: 18px; }
  .index5-boxes { flex-direction: column; gap: 16px; }
  .index5-subheading { font-size: 18px; }
  .index5-text p { font-size: 15px; }
}




.index6 {
  text-align: center;
  padding: 100px 20px 90px;
  background: #fff;
}
.index6-heading {
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.04em;
  margin: 0 0 28px;
  font-size: 56px;
}
.index6-heading span { display: block; }
.index6-subheading {
  font-size: 36px;
  font-weight: 700;
  margin: 0 0 48px;
}
.index6-copy { max-width: 900px; margin: 0 auto; }
.index6-copy p {
  font-size: 22px;
  line-height: 2.2;
  margin: 0 0 26px;
}

@media (max-width: 1024px) {
  .index6-heading { font-size: 48px; }
  .index6-subheading { font-size: 30px; }
  .index6-copy p { font-size: 20px; }
}

@media (max-width: 768px) {
  .index6 { padding: 70px 16px; }
  .index6-heading { font-size: 36px; }
  .index6-subheading { font-size: 24px; margin-bottom: 28px; }
  .index6-copy p { font-size: 18px; line-height: 2.0; }
}

@media (max-width: 480px) {
  .index6-heading { font-size: 30px; }
  .index6-subheading { font-size: 20px; }
}



.index7 {
  background: #e8f9ee;
  text-align: center;
  padding: 90px 20px 120px;
}

.index7-heading {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.6;
  margin: 0 0 18px;
}
.index7-heading span { display: inline-block; }

.index7-sub {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 48px;
}

.index7-cta {
  display: flex;
  justify-content: center;
}

@media (max-width: 768px) {
  .index7 { padding: 60px 16px 80px; }
  .index7-heading { font-size: 28px; }
  .index7-sub { font-size: 18px; }
}



.site-footer {
    text-align: center;
    padding: 40px 20px;
    background-color: #fff;
    color: #333;
    border-top: 1px solid #ccc;
}

.footer-info h2 {
    font-size: 18px;
    margin-bottom: 10px;
}

.footer-info p {
    margin: 5px 0;
    line-height: 1.8;
}

.footer-icons {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

.footer-icon img {
    height: 40px;
    width: 40px;
}

.footer-copyright {
    margin-top: 30px;
    font-size: 14px;
    color: #888;
}

@media (max-width: 768px) {
  .footer-icons { gap: 10px; }
  .footer-icon img { height: 32px; width: 32px; }
}