:root{
  --sokai-bg: #ffffff;
  --sokai-ink: #111;
  --sokai-muted: rgba(0,0,0,.62);
  --sokai-line: rgba(0,0,0,.08);
  --sokai-card: rgba(255,255,255,.86);
  --sokai-shadow: 0 18px 40px rgba(0,0,0,.10);
  --sokai-radius: 18px;
  --sokai-brand: #ff6a00;
}

*{ box-sizing: border-box; }
img{ max-width: 100%; height: auto; display: block; }

body{
  margin: 0;
  color: var(--sokai-ink);
  background: var(--sokai-bg);
  font-family:
    "Zen Maru Gothic",
    system-ui,
    -apple-system,
    "Hiragino Kaku Gothic ProN",
    "Noto Sans JP",
    sans-serif;
  line-height: 1.7;
}

.sokai-about{
  /* ヘッダー固定のオフセットを共通側で入れている想定 */
}

/* container */
.sokai-about-container{
  max-width: 1024px
  margin: 0 auto;
}

section:not(.sokai-about-hero) {
  margin: 16px;
}


/* HERO */
.sokai-about-hero{
  position: relative;
  /*min-height: 360px;*/
  border-bottom: 1px solid var(--sokai-line);
}

.sokai-about-hero__media{
  height: 100%
  overflow: hidden;
}

.sokai-about-hero__img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.02) saturate(1.02);
}

.sokai-about-hero__overlay{
  position: absolute;
  inset: 0;
  display: grid;
  place-items: end center;
  padding: 22px 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,.00) 40%,
    rgba(0,0,0,.55) 100%
  );
}

.sokai-about-hero__inner{
  max-width: 1024px;
  color: #fff;
  text-shadow: 0 10px 30px rgba(0,0,0,.55);
  padding: 12px 0 6px;
}

.sokai-about-hero__kicker{
  margin: 0 0 6px;
  font-weight: 700;
  opacity: .9;
  letter-spacing: .08em;
  font-size: 12px;
}

.sokai-about-hero__title{
  margin: 0;
  font-weight: 900;
  letter-spacing: .06em;
  font-size: clamp(22px, 4.4vw, 40px);
}

.sokai-about-hero__sub{
  margin: 6px 0 0;
  font-size: 12px;
  opacity: .9;
  letter-spacing: .12em;
}

/* Intro */
.sokai-about-intro{
  padding: 26px 0 18px;
}

.sokai-about-card{
}

.sokai-about-lead{
  margin: 0;
  color: rgba(0,0,0,.75);
  font-weight: 500;
  font-size: clamp(18px, 4.4vw, 24px);
  letter-spacing: .02em;
}

/* headings */
.sokai-about-h2{
  margin: 0 0 10px;
  font-weight: 900;
  letter-spacing: .06em;
  font-size: 24px;
}
.sokai-about-h2--center{ text-align: center; }

.sokai-about-h3{
  margin: 0 0 8px;
  font-weight: 900;
  letter-spacing: .05em;
  font-size: 18px;
}

.sokai-about-text{
  margin: 0;
  color: rgba(0,0,0,.72);
}

/* feature */
.sokai-about-feature{
  padding: 24px 0;
  border-top: 1px solid var(--sokai-line);
}

.sokai-about-feature__grid{
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 18px;
  align-items: center;
}

.sokai-about-feature__grid--alt{
  grid-template-columns: 1fr 1.05fr;
}

.sokai-about-feature__media img{
  /*border-radius: 14px;*/
  border: 1px solid var(--sokai-line);
  box-shadow: 0 14px 34px rgba(0,0,0,.12);
}

.sokai-about-feature__meta{
  margin: 0 0 8px;
  font-size: 14px;
  color: rgba(0,0,0,.55);
}

.sokai-about-actions{
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.sokai-about-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--sokai-brand);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: 0 12px 24px rgba(255,106,0,.18);
}

.sokai-about-btn--ghost{
  background: #fff;
  color: rgba(0,0,0,.78);
  border: 1px solid var(--sokai-line);
  box-shadow: 0 12px 24px rgba(0,0,0,.06);
}

/* gallery */
.sokai-about-gallery{
  padding: 24px 0 8px;
  border-top: 1px solid var(--sokai-line);
}

.sokai-about-gallery__big img{
  /*border-radius: 14px;*/
  border: 1px solid var(--sokai-line);
  box-shadow: 0 16px 40px rgba(0,0,0,.10);
}

.sokai-about-gallery__thumbs{
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.sokai-about-thumb{
  appearance: none;
  border: 1px solid var(--sokai-line);
  /*border-radius: 12px;*/
  padding: 0;
  overflow: hidden;
  background: #fff;
  cursor: pointer;
  box-shadow: 0 10px 22px rgba(0,0,0,.06);
}

.sokai-about-thumb img{
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* join */
.sokai-about-join{
  padding: 24px 0 0;
  border-top: 1px solid var(--sokai-line);
}

.sokai-about-plans{
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.sokai-about-plan{
  border: 1px solid var(--sokai-line);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(0,0,0,.06);
  padding: 14px 14px 12px;
  text-align: center;
}

.sokai-about-plan--primary{
  border-color: rgba(255,106,0,.28);
  box-shadow: 0 18px 46px rgba(255,106,0,.14);
}

.sokai-about-plan__name{
  margin: 0;
  font-weight: 900;
  letter-spacing: .06em;
}

.sokai-about-plan__price{
  margin: 6px 0 10px;
  color: rgba(0,0,0,.68);
  font-weight: 700;
}

.sokai-about-plan__btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--sokai-brand);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  width: min(220px, 100%);
}

/* list/history */
.sokai-about-list{
  padding: 24px 0 22px;
  border-top: 1px solid var(--sokai-line);
}

.sokai-about-history {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--sokai-line);
}
.sokai-about-history__body {}

.sokai-about-history--alt{
  grid-template-columns: 1fr 160px;
}

.sokai-about-history__img img{
  /*border-radius: 14px;*/
  border: 1px solid var(--sokai-line);
}

.sokai-about-linkbtn{
  display: inline-flex;
  margin-top: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--sokai-line);
  color: rgba(0,0,0,.75);
  text-decoration: none;
  font-weight: 700;
  background: #fff;
}

@media (max-width: 768px){
  .sokai-about-history--reverse {
    display: flex;
    flex-direction: column-reverse;
  }
  .sokai-about-history__img {
    width: 60%;
    min-width: 300px;
    margin: 0 auto;
  }
}

/* bullets */
.sokai-about-bullets{
  padding: 18px 0 26px;
  border-top: 1px solid var(--sokai-line);
}

.sokai-about-bullets__list{
  margin: 0;
  padding-left: 1.2em;
  color: rgba(0,0,0,.74);
  list-style: none;
}

.sokai-about-bullets__list li{
  margin: 8px 0;
}
.sokai-about-bullets__list li .sokai-about-bullets__date {
  margin-bottom:4px;
  font-size: 14px
}
.sokai-about-bullets__list li .sokai-about-bullets__title {
  margin-top:0px;
  font-weight: 500;
}

/* ===== gallery thumb active state ===== */
.sokai-about-thumb{
  position: relative;
  outline: none;
}

.sokai-about-thumb.is-active{
  border-color: rgba(255,106,0,.55);
  box-shadow: 0 14px 34px rgba(255,106,0,.18);
}

.sokai-about-thumb.is-active::after{
  content: "";
  position: absolute;
  inset: 0;
  /*border-radius: 12px;*/
  box-shadow: inset 0 0 0 2px rgba(255,106,0,.75);
  pointer-events: none;
}

.sokai-about-thumb:focus-visible{
  outline: 3px solid rgba(255,106,0,.45);
  outline-offset: 3px;
}

/* responsive */
@media (max-width: 768px){
  .sokai-about-feature__grid,
  .sokai-about-feature__grid--alt{
    grid-template-columns: 1fr;
  }
/*  .sokai-about-gallery__thumbs{
    grid-template-columns: repeat(2, 1fr);
  }*/
  .sokai-about-plans{
    grid-template-columns: 1fr;
  }
  .sokai-about-history,
  .sokai-about-history--alt{
    grid-template-columns: 1fr;
  }
}

/* ===== Global horizontal padding for mobile ===== */
@media (max-width: 768px){
  main{
 /*   padding-left: 16px;
    padding-right: 16px;*/
    /*overflow: hidden;  */
  }
}