:root {
  --concrete-white: #f4f2ed;
  --soft-cement: #e2dfd8;
  --raw-concrete: #c8c3ba;
  --fine-aggregate: #a9a39a;
  --charcoal-ink: #222222;
  --weathered-gray: #68645e;
  --shadow-concrete: #3b3a36;
  --oxide-brown: #8a6a4f;
  --line: rgba(34, 34, 34, 0.14);
  --max-width: 1180px;
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--concrete-white);
  color: var(--charcoal-ink);
  font-family:
    "Helvetica Neue",
    Arial,
    "Noto Sans TC",
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}

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

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

button {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  padding: 0 clamp(20px, 4vw, 48px);
  background: rgba(244, 242, 237, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.mobile-nav {
  display: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 156px;
  font-size: 17px;
  font-weight: 600;
}

.desktop-nav,
.header-actions,
.hero-actions,
.detail-actions,
.footer-links {
  display: flex;
  align-items: center;
}

.desktop-nav {
  gap: clamp(18px, 3vw, 36px);
  color: var(--weathered-gray);
  font-size: 14px;
}

.desktop-nav a:hover,
.text-link:hover,
.footer-links a:hover {
  color: var(--charcoal-ink);
}

.header-actions {
  min-width: 156px;
  justify-content: flex-end;
  gap: 14px;
}

.icon-link,
.menu-button {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.28);
}

.contact-icon {
  width: 19px;
  height: 14px;
  border: 1.7px solid var(--charcoal-ink);
  position: relative;
}

.contact-icon::before,
.contact-icon::after {
  content: "";
  position: absolute;
  top: 1px;
  width: 12px;
  height: 12px;
  border-top: 1.7px solid var(--charcoal-ink);
}

.contact-icon::before {
  left: 0;
  transform: rotate(36deg);
  transform-origin: top left;
}

.contact-icon::after {
  right: 0;
  transform: rotate(-36deg);
  transform-origin: top right;
}

.menu-button {
  display: none;
  gap: 5px;
  border-radius: 0;
  cursor: pointer;
}

.menu-button span {
  width: 17px;
  height: 1px;
  background: var(--charcoal-ink);
}

.hero-section {
  position: relative;
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(440px, 1.18fr);
  min-height: calc(100vh - var(--header-height));
  background: var(--soft-cement);
  overflow: hidden;
}

.hero-copy {
  z-index: 2;
  align-self: center;
  max-width: 620px;
  padding: clamp(56px, 8vw, 116px) clamp(24px, 5vw, 72px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--weathered-gray);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(54px, 8vw, 112px);
  font-weight: 400;
  line-height: 0.96;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 500;
  line-height: 1.16;
}

h3 {
  margin-bottom: 4px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.35;
}

.hero-subtitle {
  margin-bottom: 24px;
  color: var(--shadow-concrete);
  font-size: clamp(20px, 2vw, 25px);
}

.hero-text {
  max-width: 500px;
  margin-bottom: 34px;
  color: var(--weathered-gray);
  font-size: 17px;
}

.hero-actions,
.detail-actions {
  gap: 12px;
  flex-wrap: wrap;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid var(--charcoal-ink);
  cursor: pointer;
}

.primary-button {
  background: var(--charcoal-ink);
  color: var(--concrete-white);
}

.secondary-button {
  background: transparent;
  color: var(--charcoal-ink);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  margin: 0;
}

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

.category-band,
.product-section,
.brand-section,
.detail-section,
.inquiry-section,
.partnership-section,
.journal-section,
.contact-section {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(68px, 9vw, 116px) 0;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.category-item {
  min-height: 168px;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.24);
}

.category-item span {
  display: block;
  margin-bottom: 52px;
  font-size: 19px;
  font-weight: 500;
}

.category-item small {
  color: var(--weathered-gray);
  font-size: 14px;
}

.product-heading {
  align-items: center;
}

.text-link {
  color: var(--weathered-gray);
  font-size: 14px;
  white-space: nowrap;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.section-note {
  max-width: 620px;
  margin: -8px 0 28px;
  color: var(--weathered-gray);
  font-size: 15px;
}

.product-card {
  min-width: 0;
}

.product-image {
  display: block;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--soft-cement);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 280ms ease;
}

.product-image:hover img {
  transform: scale(1.035);
}

.product-shirt img {
  object-position: 55% 77%;
}

.product-pants img {
  object-position: 38% 61%;
}

.product-tee img {
  object-position: 79% 81%;
}

.product-tote img {
  object-position: 89% 47%;
}

.product-info {
  padding-top: 16px;
}

.maker,
.meta {
  color: var(--weathered-gray);
  font-size: 13px;
}

.maker {
  margin-bottom: 5px;
}

.meta {
  margin-bottom: 12px;
}

.price {
  margin-bottom: 0;
  font-size: 15px;
  font-weight: 600;
}

.brand-section {
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(30px, 6vw, 78px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.brand-panel p:last-child {
  max-width: 520px;
  color: var(--weathered-gray);
  font-size: 17px;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.principles div {
  min-height: 260px;
  padding: 24px;
  background: var(--concrete-white);
}

.principles span {
  display: block;
  margin-bottom: 56px;
  color: var(--fine-aggregate);
  font-size: 13px;
}

.principles strong {
  display: block;
  margin-bottom: 12px;
  font-size: 18px;
}

.principles p {
  margin-bottom: 0;
  color: var(--weathered-gray);
  font-size: 14px;
}

.detail-section {
  display: grid;
  grid-template-columns: minmax(420px, 1.05fr) minmax(320px, 0.95fr);
  gap: clamp(34px, 6vw, 72px);
}

.main-detail-image {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--soft-cement);
}

.main-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 58% 76%;
}

.detail-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.detail-thumbs span {
  display: block;
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(34, 34, 34, 0.06)),
    var(--soft-cement);
  border: 1px solid var(--line);
}

.detail-copy {
  align-self: center;
}

.detail-price {
  margin-bottom: 24px;
  font-size: 20px;
  font-weight: 600;
}

.detail-intro {
  margin-bottom: 30px;
  color: var(--weathered-gray);
  font-size: 17px;
}

.spec-list {
  margin: 0 0 30px;
  border-top: 1px solid var(--line);
}

.spec-list div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 18px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.spec-list dt {
  color: var(--weathered-gray);
}

.spec-list dd {
  margin: 0;
}

.inquiry-section {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(30px, 6vw, 78px);
  background: var(--shadow-concrete);
  color: var(--concrete-white);
  width: 100%;
  max-width: none;
  padding-left: max(20px, calc((100vw - var(--max-width)) / 2));
  padding-right: max(20px, calc((100vw - var(--max-width)) / 2));
}

.inquiry-copy {
  align-self: center;
}

.inquiry-copy .eyebrow {
  color: rgba(244, 242, 237, 0.7);
}

.inquiry-copy p:last-child {
  max-width: 560px;
  margin-bottom: 0;
  color: rgba(244, 242, 237, 0.72);
  font-size: 17px;
}

.inquiry-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(244, 242, 237, 0.18);
}

.inquiry-steps div {
  min-height: 230px;
  padding: 22px;
  background: rgba(244, 242, 237, 0.08);
}

.inquiry-steps span {
  display: block;
  margin-bottom: 44px;
  color: var(--raw-concrete);
  font-size: 13px;
}

.inquiry-steps strong {
  display: block;
  margin-bottom: 10px;
  font-size: 17px;
}

.inquiry-steps p {
  margin-bottom: 0;
  color: rgba(244, 242, 237, 0.72);
  font-size: 14px;
}

.partnership-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.partnership-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.86fr) minmax(420px, 1.14fr);
  gap: clamp(30px, 6vw, 72px);
}

.partnership-copy {
  color: var(--weathered-gray);
  font-size: 17px;
}

.partnership-copy p:last-child {
  margin-bottom: 0;
}

.partnership-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.partnership-list div {
  min-height: 230px;
  padding: 22px;
  background: var(--soft-cement);
}

.partnership-list span {
  display: block;
  margin-bottom: 44px;
  color: var(--oxide-brown);
  font-size: 13px;
}

.partnership-list strong {
  display: block;
  margin-bottom: 10px;
  font-size: 17px;
}

.partnership-list p {
  margin-bottom: 0;
  color: var(--weathered-gray);
  font-size: 14px;
}

.journal-section {
  padding-top: 20px;
}

.journal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.journal-grid article {
  min-height: 190px;
  padding: 24px;
  background: var(--soft-cement);
}

.journal-grid p {
  margin-bottom: 44px;
  color: var(--weathered-gray);
  font-size: 13px;
}

.journal-grid span {
  color: var(--weathered-gray);
  font-size: 14px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(30px, 6vw, 78px);
  padding-top: 30px;
}

.contact-section p {
  max-width: 560px;
  color: var(--weathered-gray);
  font-size: 17px;
}

.contact-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.contact-list div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.contact-list dt {
  color: var(--weathered-gray);
}

.contact-list dd {
  margin: 0;
}

.contact-list a {
  border-bottom: 1px solid currentColor;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(20px, 4vw, 48px);
  background: var(--charcoal-ink);
  color: var(--concrete-white);
}

.site-footer p {
  margin: 4px 0 0;
  color: rgba(244, 242, 237, 0.68);
}

.footer-links {
  gap: 20px;
  color: rgba(244, 242, 237, 0.68);
  font-size: 14px;
}

@media (max-width: 980px) {
  .desktop-nav {
    display: none;
  }

  .site-header {
    flex-wrap: wrap;
  }

  .mobile-nav {
    flex-basis: 100%;
    display: block;
    max-height: 0;
    overflow: hidden;
    transition: max-height 220ms ease, padding-bottom 220ms ease;
  }

  .mobile-nav a {
    display: block;
    padding: 13px 0;
    color: var(--weathered-gray);
    border-top: 1px solid var(--line);
  }

  .mobile-nav.is-open {
    max-height: 360px;
    padding-bottom: 12px;
  }

  .menu-button {
    display: inline-grid;
  }

  .brand,
  .header-actions {
    min-width: auto;
  }

  .hero-section {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding-bottom: 36px;
  }

  .hero-visual {
    min-height: 420px;
    order: -1;
  }

  .category-grid,
  .product-grid,
  .principles,
  .inquiry-steps,
  .partnership-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brand-section,
  .detail-section,
  .inquiry-section,
  .partnership-layout,
  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 64px;
  }

  .site-header {
    padding: 0 16px;
  }

  .icon-link {
    display: none;
  }

  .hero-copy {
    padding: 42px 20px 48px;
  }

  h1 {
    font-size: 52px;
  }

  .hero-subtitle {
    font-size: 19px;
  }

  .category-band,
  .product-section,
  .brand-section,
  .detail-section,
  .inquiry-section,
  .partnership-section,
  .journal-section,
  .contact-section {
    width: calc(100% - 32px);
    padding: 58px 0;
  }

  .section-heading,
  .product-heading,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .category-grid,
  .product-grid,
  .principles,
  .inquiry-steps,
  .partnership-list,
  .journal-grid {
    grid-template-columns: 1fr;
  }

  .category-item,
  .principles div,
  .inquiry-steps div,
  .partnership-list div {
    min-height: 150px;
  }

  .category-item span,
  .principles span,
  .inquiry-steps span,
  .partnership-list span,
  .journal-grid p {
    margin-bottom: 28px;
  }

  .detail-section {
    gap: 28px;
  }

  .spec-list div {
    grid-template-columns: 76px 1fr;
  }

  .contact-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}