/* ---------------------------------------------
*   base reset style
--------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, img {
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: normal;
}

ol, ul {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  width: 100%;
  height: auto;
  vertical-align: bottom;
}

:root {
  --font-en-bold: "SST W20 Bold", Arial, "Helvetica Neue", sans-serif;
  --font-en-regular: "SST W20 Roman", Arial, "Helvetica Neue", sans-serif;
  --color-base: #000;
  --color-muted: #656565;
  --color-link-hover: #3865e0;
  --color-bg-gray: #E7E7E7;
  --color-bg-gray-light: #EFEFEF;

  --fz-X-large: 1.875rem;
  --fz-large: 1.25rem;
  --fz-middle: 1rem;
  --fz-small: .875rem;
  --fz-X-small: .75rem;
  --fz-XX-small: .625rem;
}

@media screen and (max-width: 640px) {
  :root {
    --fz-X-large: 1.365rem;
    --fz-large: 1.125rem;
    --fz-middle: .875rem;
    --fz-small: .75rem;
  }
}

/* -------- Layout -------- */
.l-container {
  width: 100%;
  min-width: 1190px;
  padding-block: 64px;
  font-family: var(--font-en-regular);
  color: var(--color-base);
}

.l-container:not(:last-of-type) {
  margin-bottom: 72px;
}

.l-container.l-container--bg-gray {
  padding-block: 80px;
  background-color: var(--color-bg-gray);
}

.l-content {
  width: 1190px;
  margin-inline: auto;
}

.l-content__inner {
  width: 800px;
  margin-inline: auto;
}

@media screen and (max-width: 640px) {
  .l-container {
    min-width: auto;
    padding-block: 32px;
  }

  .l-container:not(:last-of-type) {
    margin-bottom: 36px;
  }

  .l-container.l-container--bg-gray {
    padding-block: 40px;
  }

  .l-content {
    width: 100%;
    padding-inline: 16px;
  }

  .l-content__inner {
    width: 100%;
  }
}

/* -------- Components -------- */
.c-title {
  font-size: var(--fz-X-large);
}

.c-title__sub {
  font-size: var(--fz-large);
}
@media screen and (max-width: 640px) {
  .c-title__sub {
    display: block;
  }
}

.c-text {
  font-size: var(--fz-middle);
  line-height: 1.6;
}

.c-text:not(:last-of-type) {
  margin-bottom: 16px;
}

.c-text.c-text--small {
  font-size: var(--fz-small);
}

.c-text.c-text--muted {
  font-size: var(--fz-small);
  color: var(--color-muted);
}

.c-image {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 8px;
}

.c-image__caption {
  color: var(--color-muted);
  font-size: var(--fz-X-small);
  text-align: right;
}

@media screen and (max-width: 640px) {
  .c-image {
    gap: 4px;
  }
}

.c-grid {
  width: 100%;
  display: grid;
}

.c-grid--col2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media screen and (max-width: 640px) {
  .c-grid--col2 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 12px;
  }
}

/* -------- Project -------- */
.p-article__title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  margin-bottom: 68px;
}

.p-article__title__main {
  width: 175px;
  font-size: inherit;
}

.p-article__title__sub {
  font-size: var(--fz-X-large);
  line-height: 1.4;
  text-align: center;
}

@media screen and (max-width: 640px) {
  .p-article__title {
    gap: 16px;
    margin-bottom: 48px;
  }

  .p-article__title__sub {
    font-size: 1.365rem;
  }
}
.p-youtube {
  display: flex;
  flex-direction: row-reverse;
  gap: 20px;
  margin-bottom: 96px;
  justify-content: start;
}

.p-youtube__title {
  font-family: var(--font-en-bold);
  font-size: var(--fz-large);
  margin-bottom: 20px;
}

.p-youtube__text {
  font-family: var(--font-en-bold);
  font-size: var(--fz-small);
  line-height: 1.6;
}

.p-youtube__text:not(:last-child) {
  margin-bottom: 16px;
}

.p-youtube__image {
  flex-shrink: 0;
  width: 350px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.p-youtube__link-image {
  position: relative;
  transition: opacity .2s;
}

.p-youtube__play-button {
  align-items: center;
  background: none;
  display: flex;
  height: 100%;
  justify-content: center;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}

.p-youtube__play-button svg {
  width: 70px;
  height: 70px;
}

.p-youtube__link-text {
  font-family: var(--font-en-bold);
  color: var(--color-muted);
  font-size: var(--fz-small);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color .2s;
}

.p-youtube__link-text::after {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border: solid var(--color-muted);
  border-width: 1px 1px 0 0;
  transform: rotate(45deg);
  transition: border-color .2s;
}

@media (hover: hover) and (pointer: fine) {
  .p-youtube__link-image:hover {
    opacity: .8;
  }

  .p-youtube__link-text:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
    text-underline-offset: 4px;
  }

  .p-youtube__link-text:hover::after {
    border-color: var(--color-link-hover);
  }
}

.p-youtube__link-image:focus-visible {
  opacity: .8;
}

.p-youtube__link-text:focus-visible {
  color: var(--color-link-hover);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.p-youtube__link-text:focus-visible::after {
  border-color: var(--color-link-hover);
}


@media screen and (max-width: 640px) {
  .p-youtube {
    flex-direction: column-reverse;
    gap: 48px;
    margin-bottom: 48px;
  }

  .p-youtube__title {
    margin-bottom: 16px;
  }

  .p-youtube__text:not(:last-child) {
    margin-bottom: 14px;
  }

  .p-youtube__image {
    width: 100%;
    gap: 16px;
  }

  .p-youtube__play-button svg {
    width: 60px;
    height: 60px;
  }
}

.p-article__info {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 52px;
  margin-bottom: 52px;
}

.p-article__info__text {
  padding: 20px 32px;
  background-color: var(--color-bg-gray-light);
}

@media screen and (max-width: 640px) {
  .p-article__info {
    gap: 36px;
    margin-bottom: 36px;
  }

  .p-article__info__text {
    padding: 16px 24px;
  }
}

.p-article__toc {
  margin-bottom: 92px;
  padding: 20px;
  border: 1px solid var(--color-base);
}

.p-article__toc-inner {
  padding-inline: 36px;
}

.p-article__toc-title {
  padding-block: 20px;
  color: var(--color-muted);
  font-size: var(--fz-small);
}

.p-article__toc-item:not(:last-child) {
  border-bottom: 1px solid var(--color-base);
}

.p-article__toc-link {
  display: block;
  padding-block: 20px;
  color: var(--color-muted);
  font-size: var(--fz-small);
  transition: color .2s;
}

@media (hover: hover) and (pointer: fine) {
  .p-article__toc-link:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
    text-underline-offset: 4px;
  }
}

.p-article__toc-link:focus-visible {
  color: var(--color-link-hover);
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media screen and (max-width: 640px) {
  .p-article__toc {
    margin-bottom: 48px;
    padding: 16px;
  }
  .p-article__toc-inner {
    padding-inline: 0;
  }
  .p-article__toc-title {
    padding-block: 12px;
  }
}

.p-article__block {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 40px;
}

.p-article__block:not(:last-of-type) {
  margin-bottom: 136px;
}

@media screen and (max-width: 640px) {
  .p-article__block {
    gap: 28px;
  }

  .p-article__block:not(:last-of-type) {
    margin-bottom: 84px;
  }
}

.p-article__profile-block {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 72px;
}

.p-article__profile {
  display: flex;
  gap: 36px;
}

.p-article__profile-description {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: var(--color-muted);
  line-height: 1.4;
}

.p-article__profile-name {
  font-family: var(--font-en-bold);
  font-size: var(--fz-middle);
}

.p-article__profile-comment {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: linear-gradient(90deg, #E2FF9F 0%, #A5FFB9 100%);
  border-radius: 16px;
}

.p-article__profile-lead {
  font-family: var(--font-en-bold);
  font-size: var(--fz-XX-small);
}

.p-article__profile-text {
  font-family: var(--font-en-bold);
  font-size: var(--fz-small);
}

.p-article__profile-image {
  flex-shrink: 0;
  width: 240px;
}

@media screen and (max-width: 640px) {
  .p-article__profile-block {
    gap: 48px;
  }

  .p-article__profile {
    flex-direction: column-reverse;
    gap: 24px;
  }

  .p-article__profile-image {
    width: 50%;
    margin-inline: auto;
  }
}

.ly_pagetop {
  min-width: 1190px;
  background-color: var(--color-bg-gray);
}

@media screen and (max-width: 640px) {
  .ly_pagetop {
    min-width: auto;
  }
}


/*---------12/03追記----------*/
.l-container:nth-child(2){
  margin-bottom: 0;
}
.p-article__toc-link_list{
  padding-block: 10px;
  margin-bottom: 16px;
}

.p-article__toc-link_list li:not(:last-of-type) {
  padding-block-end: 10px;
}
.p-article__toc-link_list li a{
  color: var(--color-muted);
  font-size: var(--fz-small);
  transition: color .2s;
}
.p-article__toc-link_list li a:hover{
  color: var(--color-link-hover);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.l-container.l-container--bg-seed {
  padding-block: 80px;
  background: url(../img/seed_bg_pc.jpg) bottom center;
  background-size: cover;
}
.l-container.l-container--bg-seed .c-title{
  font-family: var(--font-en-bold);
  color: #fff;
  font-size: var(--fz-X-large);
  line-height: 1;
}
.l-container.l-container--bg-seed .seed_inner_col{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding-block: 54px;
}
.l-container.l-container--bg-seed .seed_inner_col section{
  flex-basis: 30.24%;
}
.l-container.l-container--bg-seed .seed_inner_col .seed_inner_col_inner{
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #fff;
}
.l-container.l-container--bg-seed .seed_inner_col .seed_inner_col_inner h3{
  order: 2;
  padding-block: 13px;
  font-size: var(--fz-large);
  font-family: var(--font-en-bold);
}
.l-container.l-container--bg-seed .seed_inner_col .seed_inner_col_inner img{
  order: 1;
}
.l-container.l-container--bg-seed .seed_inner_col .seed_inner_col_inner p{
  order: 3;
  font-size: var(--fz-small);
}

[data-smoothtop] {
    height: 0;
}

.l-container.l-container--bg-seed .seed_inner_col:after {
    content: "";
    display: block;
    width: 30.24%;
    height: 0;
}

@media screen and (max-width: 640px) {
  .l-container.l-container--bg-seed{
    padding-bottom: 0;
    padding-block: 40px;
  }
  .l-container.l-container--bg-seed .seed_inner_col{
    flex-direction: column;
    padding-block: 45px;
    flex-wrap: nowrap;
  }
  .l-container.l-container--bg-seed .seed_inner_col section{
    margin-bottom: 2rem;
  }
}

/*------2026/03/03-------*/

.seed_inner_wide{
  text-align: center;
  color: #fff;
}
.seed_inner_wide .seed_inner_wide_title{
  max-width: 265px;
  margin: 0 auto;
}
.seed_inner_wide .seed_inner_wide_text{
  font-size: var(--fz-small);
  margin-top: 35px;
}
.seed_inner_wide .seed_inner_wide_link{
  margin: 36px auto 0;
  border: 1px solid #fff;
  max-width: 450px;
  
  font-size: 1.0625rem;
}
.seed_inner_wide .seed_inner_wide_link a{
  display: block;
  position:relative;
  padding: 25px 0;
  transition-duration: .3s;
}
.seed_inner_wide .seed_inner_wide_link a:hover{
  color: #000;
  background-color: #fff;
}
.seed_inner_wide .seed_inner_wide_link a:hover::after{
  border-top: 2px solid #000;
  border-right: 2px solid #000;
}
.seed_inner_wide .seed_inner_wide_link a::after{
  transition-duration: .3s;
  display: inline-block;
  content: "";
  width: 10px;
  height: 10px;
  margin: 0 10px;
  border-top: 2px solid #fff;
  border-right: 2px solid #fff;
  transform: rotate(45deg);
  position: absolute;
  right: 5%;
  top: 42%;
}

@media screen and (max-width: 640px) {
  .seed_inner_wide .seed_inner_wide_title{
    max-width: 180px;
    margin: 0 auto;
  }
}