/* =========================================================
   top.css — TOPページ
   ========================================================= */

/* ----- Hero ----- */
.p-hero {
  position: relative;
  z-index: 0; /* stacking context: 装飾円の z-index:-1 を内包する */
  overflow: hidden;
  padding-bottom: var(--sp-diff);
}
.p-hero__media {
  width: 100%;
  /* SP: 画像の縦長比に合わせて画像全体を表示（trimなし） */
  aspect-ratio: 3 / 5;
  max-height: calc(100vh - var(--header-h-sp));
  position: relative;
  background: var(--color-base-soft);
}
@media (min-width: 768px) {
  .p-hero__media {
    /* PC: 画像の比率（2008:1588）に合わせる */
    aspect-ratio: 2008 / 1588;
    max-height: calc(100vh - var(--header-h-pc));
  }
}
.p-hero__media img,
.p-hero__media picture {
  width: 100%;
  height: 100%;
  display: block;
}
.p-hero__media img {
  object-fit: cover;
  object-position: center;
}
.p-hero__copy {
  position: relative;
  max-width: var(--w-content);
  margin: -120px auto 0;
  padding: 28px 28px 32px;
  background: rgba(255, 248, 238, 0.92);
  backdrop-filter: blur(6px);
}
@media (min-width: 768px) {
  .p-hero__copy {
    max-width: 540px;
    margin: -200px 0 0 5vw;
    padding: 40px 56px 48px;
  }
}
.p-hero__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
}
.p-hero__brand-en {
  font-family: var(--font-en);
  font-size: clamp(22px, 3.4vw, 32px);
  letter-spacing: 0.12em;
  color: var(--color-main);
  line-height: 1;
}
/* ブランド表記「biu」は小文字を保持するため、小文字グリフを持つフォントで表示 */
.p-hero__brand-mark {
  font-family: "Cormorant Garamond", var(--font-en);
  font-weight: 600;
  text-transform: lowercase;
  font-size: 1.18em;
  letter-spacing: 0.04em;
}
.p-hero__brand-tag {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--color-main-deep);
}
.p-hero__title {
  font-family: var(--font-jp-serif);
  font-size: clamp(24px, 4.6vw, 44px);
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-text);
  letter-spacing: 0.08em;
}
.p-hero__title span { display: block; }
.p-hero__lead {
  margin-top: 24px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text-sub);
}

/* ----- Concept ----- */
.p-concept { position: relative; }
.p-concept__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}
@media (min-width: 768px) {
  .p-concept__grid {
    grid-template-columns: 1fr 1.1fr;
    gap: 72px;
  }
}
.p-concept__body p {
  font-family: var(--font-jp-serif);
  line-height: 2;
  font-size: 15px;
  color: var(--color-text);
}
.p-concept__media img {
  width: 100%;
  border-radius: var(--radius-sm);
}

/* ----- Feature ----- */
.p-feature {
  background: var(--color-base-soft);
}
.p-feature__list {
  display: grid;
  gap: 24px;
}
@media (min-width: 768px) {
  .p-feature__list {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 40px;
  }
}
@media (min-width: 1100px) {
  .p-feature__list {
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
  }
}
.p-feature__item {
  background: var(--color-white);
  padding: 40px 28px;
  border-radius: var(--radius-sm);
  text-align: center;
  box-shadow: var(--shadow-card);
}
.p-feature__title {
  font-family: var(--font-jp-serif);
  font-size: var(--fs-h5);
  color: var(--color-main-deep);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.p-feature__text {
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text-sub);
}

/* ----- Service ----- */
.p-service__row {
  display: grid;
  gap: 24px;
  align-items: center;
  margin-bottom: 80px;
}
@media (min-width: 768px) {
  .p-service__row {
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    margin-bottom: 120px;
  }
  .p-service__row--rev { grid-template-columns: 1fr 1.2fr; }
  .p-service__row--rev .p-service__media { order: 2; }
  .p-service__row--rev .p-service__body  { order: 1; }
}
.p-service__media img,
.p-service__media picture {
  width: 100%;
  border-radius: var(--radius-sm);
}
.p-service__title {
  font-family: var(--font-jp-serif);
  font-size: var(--fs-h4);
  margin: 8px 0 16px;
  letter-spacing: 0.05em;
}
.p-service__text {
  font-size: 14.5px;
  line-height: 2;
  color: var(--color-text-sub);
  margin-bottom: 24px;
}

.p-service__banner {
  background: linear-gradient(135deg, var(--color-main), var(--color-main-deep));
  color: var(--color-white);
  padding: 32px 24px;
  text-align: center;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.p-service__banner-en {
  font-family: var(--font-en);
  font-size: 18px;
  letter-spacing: 0.15em;
}
.p-service__banner-text {
  font-size: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.p-service__banner-price {
  font-family: var(--font-en);
  font-size: clamp(36px, 6vw, 56px);
  letter-spacing: 0.02em;
}
.p-service__banner-price small {
  font-size: 14px;
  margin-left: 6px;
}

/* ----- Trial ----- */
.p-trial__lead {
  text-align: center;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--color-text-sub);
  margin-bottom: var(--sp-same);
}
.p-trial__grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 768px) {
  .p-trial__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
}
.p-trial__card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.p-trial__card-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.p-trial__card-title {
  font-size: 14px;
  font-weight: 700;
  padding: 12px 16px 4px;
}
.p-trial__card-price {
  padding: 0 16px 16px;
  font-family: var(--font-en);
  color: var(--color-main-deep);
  font-size: 22px;
  letter-spacing: 0.02em;
}
.p-trial__card-price small {
  font-size: 11px;
  margin-left: 4px;
  color: var(--color-text-sub);
}
.p-trial__cta {
  margin-top: var(--sp-same);
  text-align: center;
}

/* ----- Trial 初回限定 共通メニュー（簡素化版） ----- */
.p-trial__offer {
  display: grid;
  grid-template-columns: 1fr;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: 8px;
}
@media (min-width: 768px) {
  .p-trial__offer { grid-template-columns: 1fr 1.3fr; align-items: stretch; }
}
.p-trial__offer-img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}
.p-trial__offer-body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}
.p-trial__offer-eyebrow {
  font-size: 13px;
  color: var(--color-main-deep);
  letter-spacing: 0.04em;
  line-height: 1.6;
}
.p-trial__offer-title {
  font-family: var(--font-jp-serif);
  font-size: var(--fs-h5);
  color: var(--color-text);
  letter-spacing: 0.04em;
}
.p-trial__offer-title small {
  display: inline-block;
  margin-left: 8px;
  font-size: 12px;
  color: var(--color-text-sub);
  font-family: var(--font-jp-sans);
}
.p-trial__offer-price {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}
.p-trial__price-label {
  display: inline-block;
  padding: 3px 12px;
  background: var(--color-main);
  color: var(--color-white);
  font-size: 12px;
  border-radius: 999px;
  font-family: var(--font-jp-sans);
}
.p-trial__price-regular {
  font-size: 14px;
  color: var(--color-text-sub);
  text-decoration: line-through;
  font-family: var(--font-jp-sans);
}
.p-trial__price-now {
  font-family: var(--font-en);
  color: var(--color-main-deep);
  font-size: 34px;
  letter-spacing: 0.02em;
}
.p-trial__price-now small {
  font-size: 12px;
  color: var(--color-text-sub);
  font-family: var(--font-jp-sans);
  margin-left: 2px;
}
.p-trial__offer-sub {
  font-size: 12px;
  color: var(--color-text-sub);
}
.p-trial__parts {
  margin-top: 28px;
  background: var(--color-base-soft);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
}
.p-trial__parts-title {
  text-align: center;
  font-family: var(--font-jp-serif);
  font-size: 15px;
  color: var(--color-text);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}
.p-trial__parts-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 16px;
}
@media (min-width: 768px) {
  .p-trial__parts-list { grid-template-columns: repeat(4, 1fr); }
}
.p-trial__parts-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.8;
}
.p-trial__parts-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.7em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-main);
}

/* ----- Flow ----- */
.p-flow {
  background: linear-gradient(135deg, var(--color-main), var(--color-main-deep));
  color: var(--color-white);
  padding-block: 80px;
  position: relative;
  overflow: hidden;
}
.p-flow__inner {
  max-width: var(--w-content);
  margin-inline: auto;
  padding-inline: 20px;
  position: relative;
  z-index: 1;
}
.c-heading--on-gold::after { background: rgba(255,255,255,0.4); }
.c-heading--on-gold .c-heading__en,
.c-heading--on-gold .c-heading__jp { color: var(--color-white); }

.p-flow__list {
  display: grid;
  gap: 16px;
  counter-reset: flow;
}
.p-flow__item {
  display: grid;
  gap: 4px 24px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  align-items: baseline;
}
@media (min-width: 768px) {
  .p-flow__item {
    grid-template-columns: 120px 200px 1fr;
    gap: 32px;
    padding: 28px 36px;
  }
}
.p-flow__step {
  font-family: var(--font-en);
  font-size: 20px;
  letter-spacing: 0.1em;
}
.p-flow__title {
  font-family: var(--font-jp-serif);
  font-size: 18px;
  margin: 0;
}
.p-flow__text {
  font-size: 14px;
  line-height: 1.8;
  opacity: 0.95;
}
.p-flow__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}
.p-flow__line-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 22px;
  background: #06C755; /* LINE 公式色 */
  color: #fff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.p-flow__line-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.p-flow__line-btn-en {
  font-family: var(--font-en);
  letter-spacing: 0.1em;
  font-size: 14px;
}
.p-flow__line-btn-jp {
  letter-spacing: 0.04em;
}

/* ----- Q&A ----- */
.p-qa__tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 32px;
}
.p-qa__tab {
  flex: 1;
  max-width: 240px;
  padding: 12px 0 14px;
  font-family: var(--font-en);
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--color-text-sub);
  border-bottom: 2px solid transparent;
  background: transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.p-qa__tab-jp {
  font-family: var(--font-jp-sans);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.p-qa__tab.is-active {
  color: var(--color-main-deep);
  border-color: var(--color-main);
}
.p-qa__panel {
  display: none;
  flex-direction: column;
  gap: 12px;
}
.p-qa__panel.is-active { display: flex; }
.p-qa__item {
  background: var(--color-base-soft);
  border-radius: var(--radius-sm);
  padding: 18px 24px;
}
.p-qa__item summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--color-main-deep);
  list-style: none;
  position: relative;
  padding-right: 28px;
}
.p-qa__item summary::-webkit-details-marker { display: none; }
.p-qa__item summary::after {
  content: "+";
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  line-height: 1;
  color: var(--color-main);
  transition: transform var(--dur) var(--ease);
}
.p-qa__item[open] summary::after {
  content: "−";
}
.p-qa__a {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text);
}

/* ----- Staff ----- */
.p-staff__list {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .p-staff__list { grid-template-columns: 1fr 1fr; gap: 40px; }
  .p-staff__list--single { grid-template-columns: 1fr; max-width: 640px; margin-inline: auto; }
}
.p-staff__card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  padding: 32px;
  border-radius: var(--radius-sm);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  align-items: center;
}
.p-staff__photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--color-base-soft);
  overflow: hidden;
}
.p-staff__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.p-staff__name {
  font-family: var(--font-en);
  font-size: 18px;
  color: var(--color-main-deep);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.p-staff__text {
  font-size: 13px;
  line-height: 1.9;
  color: var(--color-text-sub);
}

/* ----- Access ----- */
.p-access__grid {
  display: grid;
  gap: 32px;
}
@media (min-width: 768px) {
  .p-access__grid { grid-template-columns: 1fr 1.2fr; gap: 48px; }
}
.p-access__name {
  font-family: var(--font-jp-serif);
  font-size: var(--fs-h5);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}
.p-access__name span {
  font-size: 12px;
  color: var(--color-text-sub);
  margin-left: 12px;
  letter-spacing: 0.1em;
}
.p-access__dl {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px 20px;
  font-size: 14px;
  line-height: 1.8;
}
.p-access__dl dt {
  color: var(--color-main-deep);
  font-weight: 700;
}
.p-access__dl dd { margin: 0; }
.p-access__map iframe {
  width: 100%;
  border-radius: var(--radius-sm);
}

/* ----- Release（解放コピー） ----- */
.p-release {
  background: var(--color-base);
  padding-block: 64px;
}
@media (min-width: 768px) {
  .p-release { padding-block: 96px; }
}
.p-release__inner {
  text-align: center;
}
.p-release__eyebrow {
  font-family: var(--font-jp-serif);
  font-size: clamp(14px, 1.8vw, 18px);
  letter-spacing: 0.2em;
  color: var(--color-main-deep);
  margin-bottom: 32px;
}
.p-release__grid {
  display: grid;
  gap: 20px;
  text-align: left;
}
@media (min-width: 768px) {
  .p-release__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
.p-release__card {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 32px 28px;
  position: relative;
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.p-release__card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-main);
}
.p-release__card-en {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--color-main);
  margin-bottom: 8px;
}
.p-release__card-title {
  font-family: var(--font-jp-serif);
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: 12px;
}
.p-release__card-text {
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--color-text-sub);
}
.p-release__card-arrow {
  position: absolute;
  right: 24px;
  bottom: 24px;
  font-family: var(--font-en);
  color: var(--color-main);
  font-size: 22px;
  transition: transform var(--dur) var(--ease);
}
.p-release__card:hover .p-release__card-arrow {
  transform: translateX(6px);
}