/* SEISHINKU — architectural accessories. Unique stone/teal studio. */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

html,
body {
  margin: 0;
  max-width: 100%;
  overflow-x: hidden;
}

.si-body {
  background: var(--si-bg);
  color: var(--si-ink);
  font-family: var(--si-sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.75;
  min-height: 100dvh;
  letter-spacing: 0.02em;
}

.si-wrap {
  width: var(--si-wrap);
  margin-inline: auto;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

.si-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

figure {
  margin: 0;
  overflow: hidden;
  background: var(--si-surface, #f4f5f6);
}

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

h1,
h2,
h3 {
  font-family: var(--si-serif);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.04em;
  margin: 0 0 0.6em;
}

p {
  margin: 0 0 1em;
}

.si-skip {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 120;
  background: var(--si-ink);
  color: var(--si-bg);
  padding: 0.5rem 1rem;
}

.si-skip:focus {
  top: 1rem;
}

.sr-only,
.si-hp {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.si-kicker {
  font-family: var(--si-sans);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--si-teal);
  margin-bottom: 0.85rem;
}

.si-lead {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--si-stone);
  max-width: 38rem;
}

.si-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: 0.28em;
  font-size: 0.72rem;
  text-transform: uppercase;
  border-bottom: 1px solid var(--si-teal);
  padding-bottom: 0.2rem;
}

.si-link:hover {
  color: var(--si-teal);
}

.si-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 8.5rem;
  min-height: 3.1rem;
  padding: 0.85rem 1.4rem;
  background: var(--si-teal);
  color: #fff;
  border: 0;
  font-family: inherit;
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.35s var(--si-ease), transform 0.35s var(--si-ease);
}

.si-btn:hover {
  background: var(--si-ink);
}

.si-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
  padding-block: 2rem 4rem;
}

/* NAV — hairline, tiny wordmark, tracked row, teal square */
.si-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
}

.si-nav__hair {
  height: 1px;
  background: var(--si-hair);
  opacity: 0.55;
}

.si-nav__bar {
  width: var(--si-wrap);
  margin-inline: auto;
  min-height: 3.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.si-mark {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  min-width: 6.5rem;
}

.si-mark__en {
  font-family: var(--si-serif);
  font-size: 0.72rem;
  letter-spacing: 0.38em;
}

.si-mark__jp {
  font-size: 0.58rem;
  letter-spacing: 0.32em;
  color: var(--si-stone);
}

.si-nav__primary ul {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2.4rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.si-nav__primary a {
  font-size: 0.68rem;
  letter-spacing: 0.46em;
  text-transform: uppercase;
  vertical-align: middle;
  padding: 0.35rem 0;
  color: var(--si-ink);
}

.si-nav__primary a.is-current,
.si-nav__primary a:hover {
  color: var(--si-teal);
}

.si-nav__tools {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.si-nav__cta {
  width: auto;
  min-width: 5.2rem;
  height: 2.5rem;
  padding: 0 1rem;
  display: grid;
  place-items: center;
  background: var(--si-teal);
  color: #fff;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  flex-shrink: 0;
  white-space: nowrap;
}

.si-nav__cta:hover {
  background: var(--si-ink);
}

.si-menu {
  display: none;
  width: 2.7rem;
  height: 2.7rem;
  border: 1px solid var(--si-line);
  background: #fff;
  padding: 0;
  cursor: pointer;
}

.si-menu__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  width: 12px;
  margin: auto;
}

.si-menu__grid i {
  display: block;
  width: 4px;
  height: 4px;
  background: var(--si-ink);
}

.si-drawer[hidden] {
  display: none;
}

.si-drawer:not([hidden]) {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(42, 46, 53, 0.18);
}

.si-drawer__panel {
  background: #fff;
  min-height: 100%;
  padding: 1.25rem;
}

.si-drawer__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.si-drawer__head p {
  letter-spacing: 0.4em;
  font-size: 0.7rem;
  margin: 0;
}

.si-drawer__close {
  width: 2.7rem;
  height: 2.7rem;
  border: 1px solid var(--si-line);
  background: #fff;
  font-size: 1.4rem;
  cursor: pointer;
}

.si-gridmenu {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--si-line);
  border: 1px solid var(--si-line);
}

.si-gridmenu a {
  background: #fff;
  min-height: 38vw;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.1rem;
  gap: 0.35rem;
}

.si-gridmenu a.is-current {
  background: var(--si-surface);
}

.si-gridmenu__en {
  font-size: 0.58rem;
  letter-spacing: 0.38em;
  color: var(--si-teal);
}

.si-gridmenu__jp {
  font-family: var(--si-serif);
  font-size: 1.35rem;
}

.si-main {
  padding-block: 0 4rem;
}

.si-main--home {
  padding-top: 0;
}

.si-pagehead {
  padding-block: clamp(2.5rem, 7vw, 5.5rem) 2rem;
}

.si-pagehead h1 {
  font-size: clamp(2rem, 5.5vw, 4.2rem);
}

.si-crumb {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--si-stone);
  margin-bottom: 1.5rem;
}

.si-crumb a:hover {
  color: var(--si-teal);
}

.si-sec {
  margin-bottom: 2.2rem;
}

.si-sec h2,
.si-gender h2,
.si-craft h2,
.si-consult h2 {
  font-size: clamp(1.8rem, 4vw, 3.2rem);
}

/* HERO — full-bleed image carousel + overlay copy */
.si-hero {
  padding-top: 0;
  position: relative;
}

.si-hero__swiper {
  position: relative;
  height: min(78vh, 44rem);
  min-height: 26rem;
  overflow: hidden;
  background: #1a1d22;
}

.si-hero:not(.swiper-initialized) .swiper-slide:not(:first-child) {
  display: none !important;
}

.si-hero .swiper-wrapper,
.si-hero .swiper-slide,
.si-hero__slide,
.si-hero__frame {
  height: 100%;
}

.si-hero__frame {
  position: relative;
  margin: 0;
  overflow: hidden;
}

.si-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.si-hero__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(1.5rem, 5vw, 4rem) var(--si-space) 4.5rem;
  background: linear-gradient(180deg, rgba(18, 20, 24, 0.12) 20%, rgba(18, 20, 24, 0.72) 100%);
  color: #fff;
}

.si-kicker--on {
  color: #9fd4cf;
}

.si-hero h1,
.si-hero__title {
  font-family: var(--si-serif);
  font-size: clamp(2rem, 5.6vw, 4.6rem);
  max-width: 14ch;
  line-height: 1.15;
  margin: 0 0 0.7rem;
  color: #fff;
}

.si-hero__lead {
  max-width: 36rem;
  color: rgba(255, 255, 255, 0.86);
  margin: 0 0 1.25rem;
}

.si-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.4rem;
  margin: 0;
}

.si-link--on {
  color: #fff;
  border-bottom-color: #9fd4cf;
}

.si-hero__tools {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.85rem;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
}

.si-hero__tools > * {
  pointer-events: auto;
}

.si-hero__nav {
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(18, 20, 24, 0.35);
  color: #fff;
  width: 2.4rem;
  height: 2.4rem;
  cursor: pointer;
}

.si-hero__pag {
  display: flex;
  gap: 0.4rem;
}

.si-hero__pag .swiper-pagination-bullet {
  width: 1.5rem;
  height: 2px;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.4);
  opacity: 1;
}

.si-hero__pag .swiper-pagination-bullet-active {
  background: #fff;
}

.si-hero__cap {
  position: static;
  left: auto;
  bottom: auto;
  margin: 0.85rem 0 0;
  color: #fff;
  font-size: 0.62rem;
  letter-spacing: 0.38em;
  text-shadow: 0 1px 8px rgba(42, 46, 53, 0.35);
}

/* curated */
.si-curate {
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.si-curate__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--si-line);
  border-top: 1px solid var(--si-line);
  border-bottom: 1px solid var(--si-line);
}

.si-curate__card {
  background: #fff;
  padding: 2rem 1.4rem 2.4rem;
  min-height: 16rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: background 0.35s var(--si-ease);
}

.si-curate__card:hover {
  background: var(--si-surface);
}

.si-curate__idx {
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  color: var(--si-teal);
}

.si-curate__card h3 {
  font-size: 1.65rem;
}

.si-curate__card p {
  color: var(--si-stone);
  margin: 0;
}

/* men / women */
.si-gender {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  min-height: 0;
}

.si-gender--rev {
  grid-template-columns: 0.85fr 1.15fr;
}

.si-gender--rev .si-gender__pane {
  order: 2;
}

.si-gender__pane {
  min-height: 28rem;
  overflow: hidden;
}

.si-gender__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: 3rem;
}

.si-gender__copy p {
  color: var(--si-stone);
  max-width: 28rem;
}

/* materials */
.si-matter {
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.si-matter__row {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: stretch;
}

.si-matter__fig {
  margin: 0;
  min-height: 22rem;
  overflow: hidden;
}

.si-matter__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.si-matter__list li {
  padding: 1.2rem 0;
  border-top: 1px solid var(--si-line);
}

.si-matter__list li:last-child {
  border-bottom: 1px solid var(--si-line);
}

.si-matter__list h3 {
  font-size: 1.35rem;
  margin-bottom: 0.25rem;
}

.si-matter__list p {
  margin: 0;
  color: var(--si-stone);
}

/* craft */
.si-craft {
  background: var(--si-surface);
  padding-block: clamp(3rem, 7vw, 6rem);
}

.si-craft__inner {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 2.5rem;
  align-items: center;
}

.si-craft__fig {
  margin: 0;
  min-height: 22rem;
  overflow: hidden;
}

.si-craft__copy p {
  color: var(--si-stone);
}

/* featured */
.si-feat {
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.si-feat__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem;
}

.si-feat__card {
  display: grid;
  gap: 0.7rem;
}

.si-feat__frame {
  display: block;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--si-surface);
}

.si-feat__frame img {
  transition: transform 0.6s var(--si-ease);
}

.si-feat__card:hover img {
  transform: scale(1.04);
}

.si-feat__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
}

.si-feat__meta em {
  font-style: normal;
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  color: var(--si-teal);
}

.si-feat__meta strong {
  font-weight: 400;
  font-family: var(--si-serif);
  font-size: 1.15rem;
}

/* journal */
.si-journal {
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.si-journal__list {
  display: grid;
  gap: 1px;
  background: var(--si-line);
}

.si-journal__item a {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: 1.5rem;
  background: #fff;
  padding: 1.1rem 0 1.1rem 0;
}

.si-journal__item img {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
}

.si-journal__item h3 {
  font-size: 1.6rem;
  margin-bottom: 0.35rem;
}

.si-journal__item p {
  color: var(--si-stone);
  margin: 0;
}

/* gallery masonry + slider shell */
.si-gallery {
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.si-mason {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  grid-auto-rows: minmax(12rem, 28vh);
  gap: 0.4rem;
  padding-inline: var(--si-space);
}

.si-mason__tile {
  margin: 0;
  overflow: hidden;
  background: var(--si-surface);
}

.si-mason__tile--lg {
  grid-column: span 1;
  grid-row: span 2;
}

.si-mason__tile:nth-child(1) {
  grid-column: 1;
  grid-row: 1 / span 2;
}

.si-mason__tile:nth-child(4) {
  grid-column: 1;
  grid-row: 3 / span 2;
}

.si-gslide {
  display: none;
}

/* consult */
.si-consult {
  padding-block: clamp(4rem, 10vw, 8rem);
  border-top: 1px solid var(--si-line);
}

.si-consult__inner {
  max-width: 36rem;
}

.si-consult p {
  color: var(--si-stone);
}

/* faq */
.si-faq {
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.si-faq__item {
  border-top: 1px solid var(--si-line);
  padding: 1rem 0;
}

.si-faq__item:last-child {
  border-bottom: 1px solid var(--si-line);
}

.si-faq__item summary {
  cursor: pointer;
  font-family: var(--si-serif);
  font-size: 1.2rem;
  list-style: none;
}

.si-faq__item summary::-webkit-details-marker {
  display: none;
}

.si-faq__item p {
  color: var(--si-stone);
  margin: 0.7rem 0 0;
}

/* inner atelier */
.si-atelier__fig {
  margin: 0 0 2.5rem;
  min-height: 22rem;
  overflow: hidden;
}

.si-atelier__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.si-atelier__grid p {
  color: var(--si-stone);
}

.si-collect {
  padding-block: 2rem;
}

.si-collect__inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: center;
}

.si-collect:nth-of-type(even) .si-collect__inner {
  grid-template-columns: 1.1fr 0.9fr;
}

.si-collect:nth-of-type(even) figure {
  order: 2;
}

.si-collect figure {
  margin: 0;
  min-height: 22rem;
  overflow: hidden;
}

.si-collect p {
  color: var(--si-stone);
  max-width: 34rem;
}

.si-guide {
  display: grid;
  gap: 3.5rem;
  padding-bottom: 3rem;
}

.si-guide__item {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.si-guide__item figure {
  margin: 0;
  overflow: hidden;
}

.si-guide__item p {
  color: var(--si-stone);
}

.si-ask {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 3rem;
  padding-bottom: 3rem;
}

.si-ask__aside {
  font-size: 0.92rem;
  color: var(--si-stone);
}

.si-ask__aside h2 {
  font-size: 1.5rem;
  color: var(--si-ink);
}

.si-form p {
  display: grid;
  gap: 0.4rem;
  margin-block: 1.1rem;
}

.si-form label {
  font-size: 0.68rem;
  letter-spacing: 0.22em;
}

.si-form input,
.si-form textarea,
.si-form select {
  width: 100%;
  max-width: 40rem;
  padding: 0.75rem 0.8rem;
  border: 0;
  border-bottom: 1px solid var(--si-ink);
  background: transparent;
  color: inherit;
  font-family: inherit;
  font-size: 1rem;
  border-radius: 0;
}

.si-form input:focus,
.si-form textarea:focus,
.si-form select:focus {
  outline: none;
  border-bottom-color: var(--si-teal);
}

.si-notice {
  padding: 0.9rem 0;
  border-top: 1px solid var(--si-teal);
  color: var(--si-teal);
}

.si-notice--err {
  border-top-color: var(--si-ink);
  color: var(--si-ink);
}

.si-miss {
  min-height: 58vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: 5rem;
}

.si-miss h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
}

/* footer studio line */
.si-foot {
  padding: 0 0 2.5rem;
  margin-top: 2rem;
}

.si-foot__rule {
  height: 1px;
  background: var(--si-teal);
  opacity: 0.7;
  margin-bottom: 4.5rem;
}

.si-foot__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2.5rem 2rem;
  padding-bottom: 4rem;
}

.si-foot__en {
  font-family: var(--si-serif);
  letter-spacing: 0.42em;
  font-size: 0.85rem;
  margin: 0;
}

.si-foot__jp {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: var(--si-stone);
  margin: 0.35rem 0 1.2rem;
}

.si-foot__tag {
  color: var(--si-ink);
  max-width: 16rem;
}

.si-foot h2 {
  font-family: var(--si-sans);
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--si-teal);
  margin-bottom: 1rem;
}

.si-foot nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.si-foot nav a,
.si-foot address a {
  font-size: 0.88rem;
}

.si-foot nav a:hover,
.si-foot address a:hover {
  color: var(--si-teal);
}

address {
  font-style: normal;
  color: var(--si-stone);
  font-size: 0.88rem;
}

.si-foot__copy {
  color: var(--si-stone);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  margin: 0;
}

.si-body.si-lock {
  overflow: hidden;
}

/* grid reveal */
[data-si-reveal] > * {
  animation: si-grid-in 0.8s var(--si-ease) both;
}

[data-si-reveal] > *:nth-child(2) {
  animation-delay: 0.08s;
}

[data-si-reveal] > *:nth-child(3) {
  animation-delay: 0.16s;
}

[data-si-reveal] > *:nth-child(4) {
  animation-delay: 0.24s;
}

[data-si-reveal] > *:nth-child(5) {
  animation-delay: 0.32s;
}

[data-si-reveal] > *:nth-child(6) {
  animation-delay: 0.4s;
}

@keyframes si-grid-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

html:not(.js) [data-aos],
html.aos-failed [data-aos],
.js [data-aos],
[data-aos] {
  opacity: 1 !important;
  transform: none !important;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .si-hero__cell,
  .si-hero__cell.is-main,
  .si-hero__cell.is-open,
  .si-hero__cell:hover {
    flex: 1;
  }
}

main img { object-fit: cover; object-position: center; }
figure, [class*="__media"], [class*="__photo"] { overflow: hidden; }
img.is-missing { min-height: 14rem; background: linear-gradient(145deg, #e8e4dc, #cfc8bc); object-fit: none; }