:root {
  --ink: #172033;
  --muted: #667085;
  --line: #d7dee8;
  --paper: #ffffff;
  --wash: #f5f7fa;
  --mineral: #0f766e;
  --mineral-dark: #0b4f4a;
  --blue: #1f3a5f;
  --sand: #c9a86a;
  --rose: #d8a6a1;
  --shadow: 0 16px 40px rgba(23, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    Inter, "Segoe UI", "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
  background: var(--paper);
  line-height: 1.55;
  overflow-x: hidden;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
}

.brand-logo {
  width: 58px;
  height: 58px;
  flex: 0 0 auto;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #344054;
  font-size: 14px;
}

.nav a:hover {
  color: var(--mineral);
}

.section {
  padding: 72px clamp(20px, 5vw, 72px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 1.1fr);
  gap: clamp(36px, 6vw, 86px);
  align-items: center;
  min-height: min(760px, calc(100vh - 156px));
  padding-top: 48px;
  padding-bottom: 48px;
  background:
    linear-gradient(90deg, rgba(245, 247, 250, 0.92), rgba(255, 255, 255, 0.78)),
    #ffffff;
}

.hero-logo-lockup {
  display: inline-flex;
  align-items: center;
  margin-bottom: 22px;
}

.hero-logo-lockup img {
  display: block;
  width: clamp(104px, 12vw, 156px);
  height: auto;
  object-fit: contain;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--mineral);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.45;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 20px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 3vw, 44px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.2;
}

.hero-text,
.section-heading p {
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
}

.hero-actions,
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button,
.filter,
.text-link {
  min-height: 42px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
}

.primary {
  color: var(--paper);
  background: var(--mineral);
}

.primary:hover {
  background: var(--mineral-dark);
}

.secondary {
  color: var(--ink);
  border-color: var(--line);
  background: var(--paper);
}

.secondary:hover,
.filter:hover {
  border-color: var(--mineral);
  color: var(--mineral);
}

.placeholder {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(31, 58, 95, 0.08), rgba(15, 118, 110, 0.12)),
    #f7f9fb;
}

.placeholder span {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 2;
  color: rgba(23, 32, 51, 0.76);
  font-size: 13px;
  font-weight: 700;
}

.hero-placeholder {
  min-height: 520px;
  box-shadow: var(--shadow);
}

.hero-image-frame {
  margin: 0;
  min-height: 460px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--wash);
  box-shadow: var(--shadow);
}

.hero-image-frame img {
  display: block;
  width: 100%;
  min-height: 460px;
  height: 100%;
  object-fit: cover;
}

.hero-placeholder::before,
.hero-placeholder::after,
.product-visual::before,
.workshop-visual::before {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.hero-placeholder::before {
  width: 220px;
  height: 220px;
  left: 9%;
  top: 16%;
  background: radial-gradient(circle at 35% 28%, #f4d2d1, #b3768d 52%, #5b4664);
}

.hero-placeholder::after {
  width: 260px;
  height: 170px;
  right: 8%;
  bottom: 16%;
  border-radius: 45%;
  background: radial-gradient(circle at 35% 32%, #a8d5d1, #3f8f88 58%, #193b45);
}

.stone-row {
  position: absolute;
  left: 18%;
  width: 62%;
  height: 18px;
  border-radius: 999px;
  background:
    repeating-radial-gradient(circle at 10px 10px, rgba(255, 255, 255, 0.95) 0 5px, transparent 6px 15px),
    linear-gradient(90deg, #8767a5, #d5a1ab, #2e7d77, #202632);
  box-shadow: 0 12px 20px rgba(23, 32, 51, 0.14);
}

.row-a {
  top: 38%;
  transform: rotate(-8deg);
}

.row-b {
  top: 48%;
  transform: rotate(5deg);
}

.row-c {
  top: 58%;
  transform: rotate(-2deg);
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  padding-top: 0;
  padding-bottom: 0;
  background: var(--line);
}

.intro-strip div {
  padding: 28px;
  background: var(--paper);
}

.intro-strip strong,
.intro-strip span {
  display: block;
}

.intro-strip span {
  margin-top: 6px;
  color: var(--muted);
}

.section-heading {
  max-width: 920px;
  margin-bottom: 30px;
}

.compact {
  margin-bottom: 18px;
}

.filter-row {
  margin-bottom: 24px;
}

.filter {
  padding: 0 14px;
  color: #344054;
  border-color: var(--line);
  background: var(--paper);
}

.filter.is-active {
  color: var(--paper);
  border-color: var(--mineral);
  background: var(--mineral);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.material-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper);
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.material-card:hover,
.material-card.is-selected {
  border-color: rgba(15, 118, 110, 0.55);
  box-shadow: 0 14px 34px rgba(23, 32, 51, 0.1);
  transform: translateY(-2px);
}

.material-card-button {
  display: grid;
  grid-template-rows: auto 1fr;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  background: transparent;
  cursor: pointer;
}

.material-card-button:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.35);
  outline-offset: -3px;
}

.material-image-frame,
.form-image-frame {
  display: block;
  overflow: hidden;
  background: var(--wash);
}

.material-image-frame {
  aspect-ratio: 4 / 3;
}

.material-image,
.detail-main-image,
.form-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.material-image {
  transition: transform 220ms ease;
}

.material-card:hover .material-image {
  transform: scale(1.035);
}

.material-card-copy {
  display: grid;
  gap: 10px;
  padding: 18px;
}

.material-card-copy strong {
  font-size: 20px;
  line-height: 1.2;
}

.material-card-copy span:not(.category-label):not(.form-count) {
  color: var(--muted);
}

.form-count {
  color: var(--mineral);
  font-size: 13px;
  font-weight: 800;
}

.product-card {
  border: 1px solid var(--line);
  background: var(--paper);
}

.product-card-copy {
  padding: 18px;
}

.product-card p {
  color: var(--muted);
}

.product-visual {
  height: 210px;
}

.product-visual.large,
.detail-visual {
  min-height: 390px;
}

.product-visual::before {
  width: 118px;
  height: 118px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.stone-purple::before {
  background: radial-gradient(circle at 32% 30%, #eee2ff, #9b72cf 50%, #513a73);
}

.stone-rose::before {
  background: radial-gradient(circle at 28% 32%, #fff2f1, #d9a2a3 52%, #9f6269);
}

.stone-mixed::before {
  background:
    radial-gradient(circle at 30% 30%, #e8d4ff, transparent 24%),
    radial-gradient(circle at 64% 40%, #8ecdc8, transparent 24%),
    radial-gradient(circle at 44% 72%, #e0c171, transparent 24%),
    #6a7c91;
}

.stone-clear::before {
  border: 2px solid rgba(31, 58, 95, 0.16);
  background: radial-gradient(circle at 32% 28%, #ffffff, #dbe9ef 58%, #9eb7c5);
}

.stone-black::before {
  background: radial-gradient(circle at 32% 25%, #59606b, #181b23 62%, #05070b);
}

.stone-blue::before {
  background: radial-gradient(circle at 30% 30%, #9cd7df, #387d95 52%, #223751);
}

.category-label {
  margin-bottom: 8px;
  color: var(--mineral);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.text-link {
  min-height: auto;
  padding: 0;
  color: var(--mineral);
  border: 0;
  background: transparent;
}

.detail-section {
  padding-top: 24px;
  background: var(--wash);
}

.detail-panel {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(300px, 1.1fr);
  gap: 28px;
  align-items: stretch;
}

.detail-empty,
.detail-media {
  min-height: 390px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper);
}

.detail-empty {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-weight: 800;
  background:
    linear-gradient(135deg, rgba(31, 58, 95, 0.08), rgba(15, 118, 110, 0.1)),
    var(--paper);
}

.detail-main-image {
  min-height: 390px;
}

.detail-copy {
  padding: 30px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.form-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0;
}

.form-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: #ffffff;
}

.form-image-frame {
  aspect-ratio: 1 / 1;
}

.form-card h4,
.form-card p {
  margin: 0;
  padding-inline: 12px;
}

.form-card h4 {
  padding-top: 12px;
  font-size: 15px;
  line-height: 1.25;
}

.form-card p {
  padding-bottom: 12px;
  color: var(--muted);
  font-size: 13px;
}

.form-inquiry {
  width: calc(100% - 24px);
  min-height: 38px;
  margin: 12px;
  padding: 0 12px;
  font-size: 13px;
}

.spec-list {
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
}

.spec-list div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

dt {
  color: var(--muted);
  font-weight: 700;
}

dd {
  margin: 0;
}

.service-band {
  background: #102b3c;
  color: var(--paper);
}

.service-band .eyebrow,
.service-band p {
  color: rgba(255, 255, 255, 0.74);
}

.service-grid,
.workshop-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-grid article {
  min-height: 190px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
}

.service-grid p {
  margin-bottom: 0;
}

.workshop-item {
  border: 1px solid var(--line);
  background: var(--paper);
}

.workshop-item h3,
.workshop-item p {
  padding-inline: 18px;
}

.workshop-item h3 {
  padding-top: 18px;
}

.workshop-item p {
  padding-bottom: 18px;
  color: var(--muted);
}

.workshop-visual {
  height: 240px;
}

.workshop-visual.has-image {
  overflow: hidden;
  background: var(--wash);
}

.workshop-visual.has-image::before {
  content: none;
}

.workshop-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.workshop-visual::before {
  width: 76%;
  height: 48%;
  left: 12%;
  top: 26%;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.64) 0 16%, transparent 16% 20%),
    linear-gradient(135deg, rgba(15, 118, 110, 0.18), rgba(31, 58, 95, 0.12)),
    #d5c7a8;
}

.workshop-visual.measuring::before {
  background:
    linear-gradient(90deg, transparent 0 42%, rgba(23, 32, 51, 0.55) 42% 45%, transparent 45%),
    #d8c7b2;
}

.workshop-visual.sorting::before {
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.9) 0 23%, transparent 23% 25%),
    linear-gradient(135deg, #d9a2a3, #a8d5d1, #2e3b4e);
}

.workshop-visual.packing::before {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.85) 0 28%, transparent 28% 34%),
    linear-gradient(135deg, #e7eef2, #c8b58c);
}

.contact-section {
  background: var(--wash);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(320px, 1.2fr) minmax(280px, 0.8fr);
  gap: 24px;
  align-items: start;
}

.inquiry-form,
.contact-card {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.inquiry-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  padding: 24px;
}

label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-weight: 700;
}

.full,
.form-button,
.form-note {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  padding: 12px 13px;
  color: var(--ink);
  font: inherit;
  background: #fff;
}

textarea {
  resize: vertical;
}

.honeypot {
  display: none;
}

.form-note,
.muted {
  color: var(--muted);
}

.form-note {
  margin: -4px 0 0;
  font-size: 13px;
}

.contact-card {
  padding: 24px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(20px, 4vw, 56px);
  color: rgba(255, 255, 255, 0.78);
  background: #111827;
}

.site-footer a {
  color: #ffffff;
}

@media (max-width: 1050px) {
  .hero,
  .detail-panel,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .product-grid,
  .service-grid,
  .workshop-grid,
  .form-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .section {
    padding: 52px 18px;
  }

  .hero {
    padding-top: 40px;
  }

  h1 {
    max-width: 340px;
    font-size: 38px;
    line-height: 1.06;
  }

  h2 {
    font-size: 30px;
  }

  .eyebrow {
    max-width: 340px;
    font-size: 12px;
    letter-spacing: 0.04em;
  }

  .hero-text,
  .section-heading p {
    max-width: 340px;
  }

  .hero-placeholder {
    min-height: 360px;
  }

  .hero-image-frame,
  .hero-image-frame img {
    min-height: 360px;
  }

  .intro-strip,
  .product-grid,
  .service-grid,
  .workshop-grid,
  .inquiry-form,
  .form-gallery {
    grid-template-columns: 1fr;
  }

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

  .site-footer {
    flex-direction: column;
  }
}