:root {
  --paper: #ffffff;
  --paper-deep: #f2f2f2;
  --ink: #111111;
  --ink-soft: #555555;
  --icon-red: #7a1f1f;
  --gold: #b08a3c;
  --gold-soft: #d4b56a;
  --navy: #1e2a44;
  --line: rgba(17, 17, 17, 0.12);
  --shadow: 0 12px 36px rgba(17, 17, 17, 0.08);
  --display: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --body: "Zen Kaku Gothic New", "Hiragino Sans", sans-serif;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #ececec;
  border-bottom: 1px solid rgba(17, 17, 17, 0.06);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.95rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.brand-icon {
  width: 1.75rem;
  height: auto;
  max-width: 1.75rem;
  flex-shrink: 0;
  object-fit: contain;
}

.nav {
  display: flex;
  gap: 1.75rem;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
}

.nav a {
  position: relative;
  color: var(--ink);
  white-space: nowrap;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 100%;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.nav a:hover::after,
.nav a:focus-visible::after {
  transform: scaleX(1);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hero {
  margin: 0;
  padding: clamp(2.5rem, 6vw, 4.5rem) 1.5rem clamp(3rem, 7vw, 5rem);
  min-height: calc(100vh - 3.5rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.hero-stage {
  width: min(100%, 820px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(1.5rem, 5vw, 3.5rem);
}

.hero-icon {
  margin: 0;
  justify-self: end;
  width: min(100%, 340px);
  opacity: 0;
  animation: heroIn 1.2s var(--ease) both;
}

.hero-icon img {
  width: 100%;
  height: auto;
  display: block;
  box-shadow: 0 10px 28px rgba(17, 17, 17, 0.1);
}

.hero-brand {
  justify-self: start;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.15rem;
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 1s var(--ease) 0.15s both;
}

.hero-category {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.85rem, 3.6vw, 2.55rem);
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.2;
  color: var(--ink);
}

.hero-logo-img {
  width: min(100%, 210px);
  height: auto;
}

.hero-design {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  font-weight: 700;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  color: var(--ink);
}

.hero-lead {
  margin: 0;
  max-width: 22em;
  text-align: center;
  color: var(--ink);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  line-height: 1.95;
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 1s var(--ease) 0.35s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  background: var(--ink);
  color: #fff;
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  border: none;
  cursor: pointer;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}

.btn:hover,
.btn:focus-visible {
  background: var(--icon-red);
  transform: translateY(-1px);
}

.about {
  border: none;
  background: transparent;
}

.about-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 1.5rem;
}

.about h2 {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  font-weight: 700;
  letter-spacing: 0.08em;
}

#about-text {
  margin: 0;
  max-width: 42em;
  color: var(--ink);
  font-size: 1.02rem;
  line-height: 1.9;
}

.catalog {
  max-width: none;
  margin: 0;
  padding: 0 0 5.5rem;
}

.catalog-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 0;
}

.catalog-title {
  margin: 0 0 2.5rem;
  text-align: center;
  font-family: var(--display);
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-indent: 0.14em;
  line-height: 1.2;
}

.catalog-title-btn {
  appearance: none;
  border: none;
  background: transparent;
  margin: 0;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  text-indent: inherit;
  color: inherit;
  cursor: default;
  transition: color 0.3s var(--ease);
}

.catalog-title-btn::before {
  content: "←";
  display: none;
  margin-right: 0.55rem;
  font-family: var(--body);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--gold);
}

.catalog.is-detail .catalog-title-btn {
  cursor: pointer;
}

.catalog.is-detail .catalog-title-btn::before {
  display: inline-block;
}

.catalog.is-detail .catalog-title-btn:hover,
.catalog.is-detail .catalog-title-btn:focus-visible {
  color: var(--icon-red);
}

.catalog.is-detail .catalog-title-btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 1.85rem;
  row-gap: 2.35rem;
}

.category-grid[hidden] {
  display: none;
}

.category-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  font: inherit;
  color: inherit;
  text-align: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(14px);
  animation: fadeUp 0.7s var(--ease) forwards;
}

.category-card:nth-child(1) { animation-delay: 0.05s; }
.category-card:nth-child(2) { animation-delay: 0.1s; }
.category-card:nth-child(3) { animation-delay: 0.15s; }
.category-card:nth-child(4) { animation-delay: 0.2s; }
.category-card:nth-child(5) { animation-delay: 0.25s; }
.category-card:nth-child(6) { animation-delay: 0.3s; }

.category-card:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

.category-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
  padding-top: 1.05rem;
}

.category-meta::before {
  content: "";
  width: 1.3rem;
  height: 1px;
  margin-bottom: 0.15rem;
  background: var(--gold);
  transition: width 0.45s var(--ease);
}

.category-card:hover .category-meta::before,
.category-card:focus-visible .category-meta::before {
  width: 2.2rem;
}

.category-label {
  margin: 0;
  max-width: 100%;
  font-family: var(--display);
  font-size: clamp(0.98rem, 1.35vw, 1.12rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.5;
  color: var(--ink);
  transition: color 0.3s var(--ease);
}

.category-card:hover .category-label,
.category-card:focus-visible .category-label {
  color: var(--icon-red);
}

.category-count {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  line-height: 1;
  color: var(--ink-soft);
}

.category-count span {
  margin-left: 0.15em;
  font-size: 0.92em;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.category-thumb {
  aspect-ratio: 1;
  overflow: hidden;
  background: #f3f3f3;
  box-shadow: 0 10px 28px rgba(17, 17, 17, 0.1);
  transition: box-shadow 0.45s var(--ease), transform 0.45s var(--ease);
}

.category-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}

.category-card:hover .category-thumb,
.category-card:focus-visible .category-thumb {
  transform: translateY(-3px);
  box-shadow: 0 16px 34px rgba(17, 17, 17, 0.14);
}

.category-card:hover .category-thumb img,
.category-card:focus-visible .category-thumb img {
  transform: scale(1.035);
}

.product-panel {
  margin-top: 0.5rem;
}

.product-panel[hidden] {
  display: none;
}

.catalog-back {
  appearance: none;
  border: none;
  background: transparent;
  padding: 0;
  margin: 0 0 1.25rem;
  font: inherit;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  cursor: pointer;
}

.catalog-back:hover,
.catalog-back:focus-visible {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.product-panel-title {
  margin: 0 0 1.5rem;
  font-family: var(--display);
  font-size: clamp(1.25rem, 2.5vw, 1.7rem);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem 1.25rem;
}

.product-card {
  text-align: left;
  border: none;
  background: transparent;
  padding: 0;
  cursor: pointer;
  font: inherit;
  color: inherit;
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.7s var(--ease) forwards;
}

.product-card:nth-child(3n + 1) { animation-delay: 0.05s; }
.product-card:nth-child(3n + 2) { animation-delay: 0.12s; }
.product-card:nth-child(3n + 3) { animation-delay: 0.18s; }

.product-card:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.product-media {
  position: relative;
  overflow: hidden;
  background: #fff;
  aspect-ratio: 3 / 4;
  margin-bottom: 0.85rem;
  box-shadow: var(--shadow);
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}

.product-card:hover .product-media img,
.product-card:focus-visible .product-media img {
  transform: scale(1.04);
}

.product-category {
  margin: 0 0 0.25rem;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--icon-red);
}

.product-name {
  margin: 0;
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.45;
}

.site-footer {
  background: #fff;
  color: var(--ink);
  border-top: 1px solid var(--ink);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.35rem 1.5rem 1.6rem;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  align-items: end;
  gap: 1.25rem 2rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
  min-width: 0;
}

.footer-name {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--body);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.3;
}

.footer-name .brand-icon {
  width: 2.1rem;
  max-width: 2.1rem;
}

.footer-note {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  line-height: 1.5;
}

.footer-contact {
  justify-self: end;
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.2rem;
  min-width: 0;
}

.footer-designer {
  margin: 0;
  font-size: clamp(0.88rem, 1.5vw, 1.05rem);
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--ink);
}

.footer-tel,
.footer-mail {
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  line-height: 1.5;
  color: var(--ink-soft);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

.footer-tel:hover,
.footer-tel:focus-visible,
.footer-mail:hover,
.footer-mail:focus-visible {
  color: var(--ink);
}

.footer-credit {
  margin: 0;
  padding: 0.85rem 1.5rem 1.25rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  line-height: 1.5;
}

@media (max-width: 640px) {
  .footer-inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 0.95rem;
  }

  .footer-contact {
    justify-self: start;
    text-align: left;
    align-items: flex-start;
  }

  .footer-designer {
    font-size: 0.9rem;
  }

  .footer-name .brand-icon {
    width: 1.75rem;
    max-width: 1.75rem;
  }
}

.product-dialog,
.contact-dialog {
  width: min(960px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  border: none;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--shadow);
  overflow: auto;
}

.contact-dialog {
  width: min(420px, calc(100vw - 2rem));
}

.product-dialog::backdrop,
.contact-dialog::backdrop {
  background: rgba(18, 14, 10, 0.62);
  backdrop-filter: blur(4px);
}

.contact-dialog-body {
  padding: 0 1.75rem 1.75rem;
}

.contact-dialog-body h2 {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  line-height: 1.35;
}

.contact-dialog-lead {
  margin: 0 0 1.25rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.contact-dialog-details {
  display: grid;
  gap: 0.5rem;
}

.contact-dialog-tel,
.contact-dialog-mail {
  font-size: 0.95rem;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.contact-dialog-tel:hover,
.contact-dialog-tel:focus-visible,
.contact-dialog-mail:hover,
.contact-dialog-mail:focus-visible {
  color: var(--icon-red);
}

.dialog-close-bar {
  display: flex;
  justify-content: flex-end;
  margin: 0;
  padding: 0.75rem 0.85rem 0;
}

.dialog-close {
  appearance: none;
  border: none;
  background: transparent;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  color: var(--ink-soft);
  width: 2.4rem;
  height: 2.4rem;
}

.dialog-close:hover,
.dialog-close:focus-visible {
  color: var(--ink);
}

.dialog-body {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  padding: 0 1.5rem 1.75rem;
}

.dialog-gallery img#dialog-image {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: #fff;
  box-shadow: var(--shadow);
}

.thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.75rem;
}

.thumbs button {
  appearance: none;
  border: 1px solid transparent;
  padding: 0;
  width: 4rem;
  height: 5.2rem;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
}

.thumbs button.is-active,
.thumbs button:focus-visible {
  border-color: var(--gold);
}

.thumbs img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dialog-category {
  margin: 0 0 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--icon-red);
}

.dialog-info h2 {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  line-height: 1.35;
}

.dialog-desc {
  margin: 0 0 1.25rem;
  color: var(--ink-soft);
}

.specs {
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.specs div {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}

.specs dt {
  color: var(--ink-soft);
  font-weight: 500;
}

.specs dd {
  margin: 0;
  white-space: pre-line;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 900px) {
  .hero {
    min-height: auto;
    padding-top: 2rem;
  }

  .hero-stage {
    width: min(100%, 560px);
    gap: 2rem;
  }

  .category-grid {
    grid-template-columns: 1fr 1fr;
    column-gap: 1.5rem;
    row-gap: 2.1rem;
  }

  .product-grid,
  .dialog-body {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding: 0.7rem 0.85rem;
    gap: 0.65rem;
    align-items: center;
  }

  .nav {
    flex-direction: column;
    align-items: flex-end;
    gap: 0.2rem;
    font-size: 0.75rem;
    flex-shrink: 0;
  }

  .brand {
    font-size: 0.78rem;
    gap: 0.4rem;
    min-width: 0;
  }

  .brand span {
    line-height: 1.25;
  }

  .brand-icon {
    width: 1.45rem;
    max-width: 1.45rem;
  }

  .hero-stage {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: 1.75rem;
  }

  .hero-icon {
    justify-self: center;
    width: min(72%, 260px);
  }

  .hero-brand {
    justify-self: center;
  }

  .hero-logo-img {
    width: min(100%, 170px);
  }

  .catalog-inner {
    padding-top: 1.75rem;
  }

  .catalog-title {
    margin-bottom: 2.15rem;
  }

  .category-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    max-width: 380px;
    margin: 0 auto;
  }

  .product-grid,
  .dialog-body {
    grid-template-columns: 1fr;
  }

  .product-dialog,
  .contact-dialog {
    width: calc(100vw - 1rem);
  }
}

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

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

  .category-card,
  .product-card {
    opacity: 1;
    transform: none;
  }
}