/* =========================================================
   SOURDINE — デモLP v2 / 声を、ひそめる。
   無彩色・写真主役・誌面エディトリアル + EC密度
   mobile-first（default = mobile → min-width で上書き）
   ========================================================= */

:root {
  --paper: #f4f3f1;
  --ink:   #121211;
  --ink-soft: #3a3936;
  --sub:   #9a9794;
  --sub-strong: #6d6b68;
  --line:  #dedcd8;

  --serif: "Cormorant Garamond", serif;
  --latin: "Inter", sans-serif;
  --mincho: "Shippori Mincho B1", serif;
  --gothic: "Zen Kaku Gothic New", sans-serif;

  --gutter: 22px;
  --maxw: 1280px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--gothic);
  font-weight: 300;
  line-height: 1.85;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { display: block; width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--ink); color: var(--paper); }

/* テキストリンク（下線・矢印） */
.textlink {
  display: inline-block;
  font-family: var(--latin);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 4px;
  transition: opacity 0.4s var(--ease);
}
.textlink:hover { opacity: 0.55; }
.textlink--center { display: block; width: max-content; margin: 48px auto 0; }

/* =========================================================
   告知バー / HEADER
   ========================================================= */
.topbar {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--gothic);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 9px 12px;
}
.site-head {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px var(--gutter);
  background: rgba(244, 243, 241, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-head__mark {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 21px;
  letter-spacing: 0.22em;
  padding-left: 0.22em;
}
.site-head__nav { display: none; }
.site-head__nav a {
  font-family: var(--latin);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ink);
  transition: opacity 0.3s var(--ease);
}
.site-head__nav a:hover { opacity: 0.5; }

/* =========================================================
   1. FV
   ========================================================= */
.fv {
  position: relative;
  min-height: calc(100svh - 96px);
  background: var(--paper);
  overflow: hidden;
}
.fv__stage { position: absolute; inset: 0; }
.fv__stage img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 64% center;
  opacity: 0;
  transition: opacity 1.4s var(--ease);
}
.fv__stage img.is-on { opacity: 1; }
.fv__stage--wide { display: none; }
.fv::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(97deg,
    var(--paper) 0%,
    rgba(244, 243, 241, 0.96) 30%,
    rgba(244, 243, 241, 0.68) 48%,
    rgba(244, 243, 241, 0) 70%);
}
.fv__copy {
  position: absolute;
  left: var(--gutter);
  top: 12vh;
  z-index: 2;
  max-width: 94vw;
}
.fv__season {
  display: flex;
  flex-direction: column;
  font-family: var(--latin);
  font-size: 11px;
  letter-spacing: 0.34em;
  line-height: 1.7;
  color: var(--sub-strong);
  margin-bottom: 8px;
}
.fv__wordmark {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(56px, 21vw, 120px);
  line-height: 0.9;
  letter-spacing: -0.005em;
  white-space: nowrap;
}
.fv__tagline-vertical {
  writing-mode: vertical-rl;
  font-family: var(--mincho);
  font-weight: 500;
  font-size: 17px;
  letter-spacing: 0.3em;
  margin-top: 22px;
  height: 11.5em;
  white-space: nowrap;
}
.fv__tagline-latin {
  font-family: var(--latin);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--sub-strong);
  margin-top: 12px;
}
.fv__cta {
  display: inline-block;
  margin-top: 26px;
  font-family: var(--latin);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding: 15px 34px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  transition: background 0.5s var(--ease), color 0.5s var(--ease);
}
.fv__cta:hover { background: transparent; color: var(--ink); }
.fv__scroll {
  position: absolute;
  right: var(--gutter);
  bottom: 22px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.fv__scroll span {
  font-family: var(--latin);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--sub-strong);
  writing-mode: vertical-rl;
}
.fv__scroll::after { content: ""; width: 1px; height: 40px; background: linear-gradient(var(--sub-strong), transparent); }

/* =========================================================
   2. 特徴バンド
   ========================================================= */
.band {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.band__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 22px 16px;
  text-align: center;
}
.band__item + .band__item { border-top: 1px solid var(--line); }
.band__en {
  font-family: var(--latin);
  font-size: 12px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
}
.band__ja { font-family: var(--mincho); font-size: 13px; color: var(--sub-strong); letter-spacing: 0.06em; }

/* =========================================================
   3. CONCEPT
   ========================================================= */
.concept { padding: 76px var(--gutter) 68px; }
.concept__lead { display: flex; gap: 20px; align-items: flex-start; }
.concept__vhead {
  writing-mode: vertical-rl;
  font-family: var(--mincho);
  font-weight: 500;
  font-size: 24px;
  letter-spacing: 0.32em;
  height: 6.8em;
  flex-shrink: 0;
}
.concept__vhead span {
  font-family: var(--latin);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--sub-strong);
  margin-top: 1.2em;
  text-transform: uppercase;
}
.concept__text {
  font-family: var(--mincho);
  font-weight: 400;
  font-size: 16px;
  line-height: 2.3;
  letter-spacing: 0.06em;
  padding-top: 4px;
}
.concept__figure { margin-top: 48px; }
.concept__figure img { aspect-ratio: 3 / 2; object-fit: cover; }

/* =========================================================
   共通：セクションラベル
   ========================================================= */
.section-label { display: flex; flex-direction: column; gap: 7px; margin-bottom: 36px; }
.section-label--center { align-items: center; text-align: center; }
.section-label__no { font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--sub-strong); }
.section-label__en { font-family: var(--latin); text-transform: uppercase; letter-spacing: 0.3em; font-size: 12px; }
.section-label__ja { font-family: var(--mincho); font-size: 13px; letter-spacing: 0.08em; color: var(--sub-strong); }

/* =========================================================
   4. NEW COLLECTION グリッド
   ========================================================= */
.collection { padding: 72px var(--gutter); }
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 16px;
}
.card__media { display: block; overflow: hidden; }
.card__media img { aspect-ratio: 4 / 5; object-fit: cover; transition: transform 0.7s var(--ease); }
.card__media:hover img { transform: scale(1.04); }
.card__en { font-family: var(--latin); font-size: 11px; letter-spacing: 0.14em; margin-top: 14px; }
.card__ja { font-family: var(--mincho); font-size: 13px; color: var(--ink-soft); margin-top: 4px; }
.card__price { font-size: 13px; font-weight: 500; color: var(--ink); margin-top: 6px; letter-spacing: 0.04em; }

/* =========================================================
   5. COLOR バリエーション
   ========================================================= */
.color { padding: 72px var(--gutter); }
.color__row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.color__item img { aspect-ratio: 3 / 4; object-fit: cover; }
.color__item figcaption {
  font-family: var(--latin);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-align: center;
  margin-top: 12px;
  color: var(--ink-soft);
}

/* =========================================================
   6. THE PIECES
   ========================================================= */
.pieces { padding: 72px var(--gutter); }
.piece { margin-top: 56px; }
.piece:first-of-type { margin-top: 0; }
.piece__figure img { aspect-ratio: 4 / 5; object-fit: cover; }
.piece__body { padding-top: 20px; }
.piece__no { font-family: var(--latin); font-size: 11px; letter-spacing: 0.24em; color: var(--sub-strong); text-transform: uppercase; margin-bottom: 10px; }
.piece__name { font-family: var(--mincho); font-weight: 500; font-size: 19px; line-height: 1.7; letter-spacing: 0.04em; }
.piece__desc { font-family: var(--mincho); font-size: 14px; line-height: 1.9; color: var(--ink-soft); margin-top: 12px; }
.piece__spec { font-size: 14px; font-weight: 500; letter-spacing: 0.05em; color: var(--ink-soft); margin-top: 14px; }
.piece__body .textlink { margin-top: 18px; }

/* =========================================================
   7. STYLING / LOOKBOOK
   ========================================================= */
.styling { padding: 72px var(--gutter); }
.looks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 14px; }
.lk img { aspect-ratio: 4 / 5; object-fit: cover; }
.lk figcaption {
  font-family: var(--mincho);
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: 0.04em;
  margin-top: 12px;
  color: var(--ink-soft);
}
.lk figcaption span {
  display: block;
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--sub-strong);
  margin-bottom: 5px;
}

/* =========================================================
   8. WHY SOURDINE
   ========================================================= */
.why { padding: 72px var(--gutter); }
.why__list { list-style: none; }
.why__item { padding-top: 36px; margin-top: 36px; border-top: 1px solid var(--line); }
.why__item:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.why__figure { margin-bottom: 18px; }
.why__figure img { aspect-ratio: 4 / 5; object-fit: cover; }
.why__no { font-family: var(--mincho); font-weight: 600; font-size: 24px; letter-spacing: 0.1em; margin-bottom: 12px; }
.why__head { font-family: var(--mincho); font-weight: 500; font-size: 18px; letter-spacing: 0.04em; margin-bottom: 12px; }
.why__text { font-size: 14px; line-height: 2; color: var(--ink-soft); letter-spacing: 0.03em; }

/* =========================================================
   9. SHOP
   ========================================================= */
.shop { position: relative; min-height: 70svh; display: flex; overflow: hidden; }
.shop__photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.shop__overlay { position: relative; z-index: 2; margin: auto; text-align: center; padding: 0 var(--gutter); }
.shop__overlay::before {
  content: "";
  position: absolute;
  inset: -70px -10px;
  z-index: -1;
  background: radial-gradient(ellipse 65% 60% at center,
    rgba(244, 243, 241, 0.88) 0%, rgba(244, 243, 241, 0.5) 50%, rgba(244, 243, 241, 0) 80%);
}
.shop__lead { font-family: var(--mincho); font-weight: 500; font-size: 19px; line-height: 2; letter-spacing: 0.08em; margin-bottom: 28px; }
.shop__cta {
  display: inline-block;
  font-family: var(--latin);
  font-size: 13px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding: 19px 46px;
  border: 1px solid var(--ink);
  transition: background 0.55s var(--ease), color 0.55s var(--ease), letter-spacing 0.55s var(--ease);
}
.shop__cta:hover { background: #2d2d2b; color: var(--paper); letter-spacing: 0.3em; }
.shop__note { font-size: 11px; letter-spacing: 0.06em; color: var(--ink-soft); margin-top: 20px; }

/* =========================================================
   10. FAQ
   ========================================================= */
.faq { padding: 72px var(--gutter); }
.faq__row { padding: 28px 0; border-top: 1px solid var(--line); }
.faq__row:first-child { border-top: none; padding-top: 6px; }
.faq__row dt { font-family: var(--mincho); font-weight: 500; font-size: 16px; letter-spacing: 0.04em; margin-bottom: 11px; }
.faq__row dt::before { content: "Q."; font-family: var(--serif); font-style: italic; margin-right: 9px; color: var(--sub-strong); }
.faq__row dd { font-size: 14px; line-height: 1.95; color: var(--ink-soft); letter-spacing: 0.02em; padding-left: 1.5em; }

/* =========================================================
   11. SNS
   ========================================================= */
.sns { padding: 72px var(--gutter) 84px; text-align: center; }
.sns__lead { font-family: var(--mincho); font-size: 16px; letter-spacing: 0.08em; margin-bottom: 8px; }
.sns__handle { font-family: var(--serif); font-style: italic; font-size: 21px; letter-spacing: 0.06em; margin-bottom: 32px; }
.sns__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; }
.sns__grid img { aspect-ratio: 1 / 1; object-fit: cover; }
.sns__contact { margin-top: 34px; font-size: 13px; letter-spacing: 0.04em; color: var(--sub-strong); }
.sns__contact a { border-bottom: 1px solid var(--sub-strong); padding-bottom: 2px; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-foot { padding: 72px var(--gutter) 52px; text-align: center; border-top: 1px solid var(--line); }
.site-foot__mark { font-family: var(--serif); font-weight: 500; font-size: clamp(36px, 12vw, 72px); letter-spacing: 0.14em; padding-left: 0.14em; line-height: 1; }
.site-foot__sub { font-family: var(--latin); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--sub-strong); margin-top: 16px; }
.site-foot__nav { display: flex; justify-content: center; gap: 26px; margin-top: 28px; }
.site-foot__nav a { font-family: var(--latin); font-size: 11px; letter-spacing: 0.2em; color: var(--ink-soft); }
.site-foot__demo { font-size: 11.5px; line-height: 1.9; color: var(--sub-strong); margin-top: 32px; letter-spacing: 0.02em; }

/* =========================================================
   TABLET / DESKTOP
   ========================================================= */
@media (min-width: 768px) {
  :root { --gutter: 48px; }
  .site-head { padding: 18px var(--gutter); }
  .site-head__nav { display: flex; gap: 32px; }

  .fv { min-height: calc(100svh - 104px); }
  .fv__stage--wide { display: block; }
  .fv__stage--port { display: none; }
  .fv__stage img { object-position: center; }
  .fv::before {
    background: linear-gradient(97deg, var(--paper) 0%, rgba(244,243,241,0.9) 26%, rgba(244,243,241,0.4) 44%, rgba(244,243,241,0) 58%);
  }
  .fv__copy { top: 22vh; max-width: 60vw; }
  .fv__season { flex-direction: row; gap: 18px; font-size: 12px; }
  .fv__wordmark { font-size: clamp(96px, 14vw, 210px); }
  .fv__tagline-vertical { font-size: 21px; }

  .band { grid-template-columns: repeat(3, 1fr); }
  .band__item + .band__item { border-top: none; border-left: 1px solid var(--line); }
  .band__item { padding: 30px 16px; }

  .concept { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; padding: 120px var(--gutter); max-width: var(--maxw); margin: 0 auto; }
  .concept__figure { margin-top: 0; }
  .concept__figure img { aspect-ratio: 4 / 5; }
  .concept__text { font-size: 18px; }

  .collection { padding: 116px var(--gutter); max-width: var(--maxw); margin: 0 auto; }
  .grid { grid-template-columns: repeat(3, 1fr); gap: 44px 26px; }

  .color { padding: 116px var(--gutter); max-width: var(--maxw); margin: 0 auto; }
  .color__row { gap: 22px; }

  .pieces { padding: 116px var(--gutter); max-width: var(--maxw); margin: 0 auto; }
  .piece { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-top: 96px; }
  .piece--reverse .piece__figure { order: 2; }
  .piece__body { padding-top: 0; }
  .piece__name { font-size: 25px; }

  .styling { padding: 116px var(--gutter); max-width: var(--maxw); margin: 0 auto; }
  .looks { grid-template-columns: repeat(3, 1fr); gap: 48px 26px; }

  .why { padding: 116px var(--gutter); max-width: var(--maxw); margin: 0 auto; }
  .why__list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 50px; }
  .why__item { border-top: none; padding-top: 0; margin-top: 0; }

  .shop { min-height: 78svh; }
  .shop__lead { font-size: 24px; }

  .faq { max-width: 880px; margin: 0 auto; padding: 116px var(--gutter); }
  .faq__row { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; }
  .faq__row dt { margin-bottom: 0; }
  .faq__row dd { padding-left: 0; }

  .sns { padding: 116px var(--gutter) 104px; }
  .sns__grid { max-width: 720px; margin: 0 auto; gap: 6px; }
}

@media (min-width: 1100px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .fv__copy { top: 26vh; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

/* =========================================================
   v3 — モーション / 画像切替 / 散らし配置
   ========================================================= */

/* スクロール出現（JS有効時のみ隠す） */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease) var(--rd, 0ms), transform 0.9s var(--ease) var(--rd, 0ms);
  will-change: opacity, transform;
}
.js-reveal [data-reveal].is-in { opacity: 1; transform: none; }

/* NEW COLLECTION：ホバーで画像切替 */
.card__media { position: relative; display: block; overflow: hidden; aspect-ratio: 4 / 5; }
.card__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.card__media .alt { opacity: 0; transition: opacity 0.7s var(--ease); }
.card__media:hover .alt { opacity: 1; }
.card__media:hover img { transform: none; }

/* CAMPAIGN：フルブリードのクロスフェード＋パララックス */
.campaign { position: relative; height: 74svh; overflow: hidden; background: var(--ink); }
.campaign__slides { position: absolute; inset: 0; }
.campaign__slides img {
  position: absolute; inset: 0; width: 100%; height: 112%;
  object-fit: cover; opacity: 0;
  transform: translateY(var(--py, 0));
  transition: opacity 1.2s var(--ease);
}
.campaign__slides img.is-on { opacity: 1; }
.campaign::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 46%;
  z-index: 1; background: linear-gradient(transparent, rgba(18, 18, 17, 0.6));
}
.campaign__copy { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; text-align: center; padding: 0 var(--gutter) 40px; }
.campaign__en { font-family: var(--latin); font-size: 11px; letter-spacing: 0.3em; color: rgba(244, 243, 241, 0.82); }
.campaign__ja { font-family: var(--mincho); font-weight: 500; font-size: 21px; letter-spacing: 0.12em; color: var(--paper); margin-top: 8px; }

/* LOOKBOOK：散らし配置スプレッド */
.lookbook { padding: 72px var(--gutter); }
.lookbook .section-label { margin-bottom: 24px; }
/* 密な雑誌マソンリー：ルックと情景写真を混在させて詰める */
.spread { column-count: 2; column-gap: 12px; }
.sp { display: block; width: 100%; margin: 0 0 12px; break-inside: avoid; }
.sp__media {
  position: relative; display: block; overflow: hidden;
  aspect-ratio: 4 / 5;
}
.sp__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.sp--look .sp__media:hover img { transform: scale(1.03); }
.sp__media[data-slideshow] img { opacity: 0; transition: opacity 1.1s var(--ease); }
.sp__media[data-slideshow] img.is-on { opacity: 1; }
.sp__media[data-slideshow] img:not(.is-on) { transform: none; }
.sp__media:not([data-slideshow]) img { opacity: 1; }
/* アスペクト比で大きさに変化を付ける */
.is-tall .sp__media { aspect-ratio: 3 / 4; }
.is-square .sp__media { aspect-ratio: 1 / 1; }
.is-wide .sp__media { aspect-ratio: 3 / 2; }
.sp__cap { font-family: var(--latin); font-size: 9px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--sub-strong); margin-top: 8px; }

/* JSマソンリー（下端を揃える本物の積み上げ） */
.spread--js { display: flex; align-items: flex-start; gap: 12px; column-count: auto; }
.spread--js .spread__col { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; gap: 12px; }
.spread--js .sp { width: 100%; margin: 0; }

.sp__info { margin-top: 16px; }
.sp__no { font-family: var(--serif); font-style: italic; font-size: 16px; letter-spacing: 0.1em; color: var(--sub-strong); margin-bottom: 6px; }
.tags { list-style: none; }
.tags li { border-bottom: 1px solid var(--line); }
.tags li:first-child { border-top: 1px solid var(--line); }
.tags a {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 9px 0; font-family: var(--latin); font-size: 11px; letter-spacing: 0.1em;
  transition: opacity 0.3s var(--ease);
}
.tags a span { color: var(--ink-soft); }
.tags a:hover { opacity: 0.5; }
.tags__buy {
  display: inline-block; margin-top: 16px;
  font-family: var(--latin); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  border-bottom: 1px solid var(--ink); padding-bottom: 4px;
  transition: opacity 0.3s var(--ease);
}
.tags__buy:hover { opacity: 0.55; }

@media (min-width: 768px) {
  .campaign { height: 82svh; }
  .campaign__ja { font-size: 30px; }

  .lookbook { padding: 120px var(--gutter); max-width: var(--maxw); margin: 0 auto; }
  .lookbook .section-label { margin-bottom: 20px; }
  /* デスクトップ：3カラムの密なマソンリー（情景写真を混ぜて詰める） */
  .spread { column-count: 3; column-gap: 22px; }
  .sp { margin: 0 0 22px; }
  .spread--js { gap: 22px; }
  .spread--js .spread__col { gap: 22px; }
}
@media (min-width: 1280px) {
  .spread { column-gap: 28px; }
  .sp { margin: 0 0 28px; }
  .spread--js { gap: 28px; }
  .spread--js .spread__col { gap: 28px; }
}