:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-soft: #fbfbfd;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(29, 29, 31, 0.12);
  --line-strong: rgba(29, 29, 31, 0.2);
  --dark: #101012;
  --accent: #0071e3;
  --radius: 28px;
  --radius-sm: 18px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.09);
  --pad: clamp(20px, 5vw, 56px);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(245, 245, 247, 1) 40%),
    var(--bg);
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
  overflow-x: hidden;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

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

button,
input,
textarea {
  font: inherit;
}

.progress {
  position: fixed;
  inset: 0 auto auto 0;
  width: 0%;
  height: 3px;
  z-index: 60;
  background: var(--accent);
  transform-origin: left center;
}

.nav-shell {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  left: 50%;
  z-index: 50;
  display: flex;
  width: min(calc(100% - 24px), 760px);
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 10px 8px 8px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(24px) saturate(1.8);
  transform: translateX(-50%);
  transition: width 260ms ease, background 260ms ease, box-shadow 260ms ease;
}

.nav-shell.compact {
  width: min(calc(100% - 44px), 540px);
  background: rgba(255, 255, 255, 0.9);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding-right: 6px;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: var(--dark);
  font-size: 15px;
  font-weight: 740;
}

.nav-links {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  flex: 0 0 auto;
  padding: 8px 9px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 560;
}

.nav-links a:active,
.nav-links a:focus-visible {
  color: var(--ink);
  background: rgba(29, 29, 31, 0.06);
  outline: none;
}

main {
  overflow: hidden;
}

section {
  position: relative;
  padding-inline: var(--pad);
}

.hero {
  display: grid;
  min-height: 100dvh;
  align-content: start;
  gap: 22px;
  padding-top: 142px;
  padding-bottom: 126px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(42px, 10vw, 68px);
  line-height: 1;
  font-weight: 760;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(36px, 10vw, 76px);
  line-height: 1.02;
  font-weight: 750;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.15;
  font-weight: 700;
}

.hero-lead,
.section-heading p,
.brief-panel p,
.contact-card p {
  max-width: 660px;
  color: var(--muted);
  font-size: clamp(17px, 4.4vw, 24px);
  line-height: 1.45;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 19px;
  font-size: 15px;
  font-weight: 650;
  white-space: nowrap;
}

.button-dark {
  color: white;
  background: var(--dark);
}

.button-light {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.76);
  border-color: var(--line);
}

.hero-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: #e8e8ed;
  box-shadow: var(--shadow);
  aspect-ratio: 1.18;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
}

.hero-media::after,
.material-hero::after,
.case-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 52%, rgba(0, 0, 0, 0.28));
}

.media-caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 1;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 10px;
  color: white;
}

.media-caption span {
  font-size: 12px;
  font-weight: 650;
  opacity: 0.86;
}

.media-caption strong {
  max-width: 170px;
  text-align: right;
  font-size: 22px;
  line-height: 1;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--line);
}

.metric-strip div {
  min-width: 0;
  padding: 17px 10px;
  background: rgba(255, 255, 255, 0.72);
  text-align: center;
}

.metric-strip strong {
  display: block;
  font-size: clamp(19px, 5.4vw, 30px);
  line-height: 1;
  white-space: nowrap;
}

.metric-strip span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 560;
  line-height: 1.25;
}

.intro-section,
.materials-section,
.cases-section,
.brief-section,
.contact-section {
  scroll-margin-top: 92px;
  padding-top: 84px;
  padding-bottom: 84px;
}

.cases-section {
  overflow: hidden;
}

.brief-section {
  display: none;
}

.section-heading {
  margin-bottom: 28px;
}

.principles {
  display: grid;
  gap: 12px;
}

.principle,
.material-card,
.brief-panel,
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.045);
}

.principle {
  padding: 24px;
}

.principle span {
  display: block;
  margin-bottom: 36px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.principle p,
.material-card p,
.case-card p,
.story-card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.craft-story {
  min-height: 310dvh;
  padding: 0;
  background:
    radial-gradient(circle at 20% 10%, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0) 34%),
    radial-gradient(circle at 84% 52%, rgba(210, 210, 215, 0.42), rgba(210, 210, 215, 0) 36%),
    linear-gradient(180deg, #e8e8eb 0%, #d8d8dc 46%, #eeeeF1 100%);
  color: var(--ink);
}

.sticky-visual {
  position: sticky;
  top: 0;
  display: grid;
  min-height: 100dvh;
  align-content: end;
  padding: 112px var(--pad) 94px;
  overflow: hidden;
}

.story-media {
  position: absolute;
  inset: 92px var(--pad) auto;
  height: min(54dvh, 520px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: clamp(28px, 8vw, 52px);
  opacity: 1;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.16);
}

.story-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(232, 232, 235, 0.04), rgba(216, 216, 220, 0.48)),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04), rgba(216, 216, 220, 0.18));
}

.story-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  transition: opacity 420ms ease, transform 760ms ease;
}

.story-copy {
  position: relative;
  z-index: 1;
  max-width: 620px;
  margin-bottom: 60px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 28px;
  background: rgba(245, 245, 247, 0.48);
  box-shadow: 0 18px 56px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(28px) saturate(1.6);
}

.story-copy .eyebrow {
  color: var(--muted);
}

.story-copy h2 {
  margin-bottom: 10px;
  color: var(--ink);
}

.story-copy p:last-child {
  color: var(--muted);
  font-size: clamp(18px, 4.8vw, 25px);
  line-height: 1.45;
}

.story-steps {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 30vh;
  margin-top: -100dvh;
  padding: 112dvh var(--pad) 54vh;
  pointer-events: none;
}

.story-card {
  width: min(100%, 380px);
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.46);
  border-radius: 24px;
  background: rgba(245, 245, 247, 0.44);
  backdrop-filter: blur(24px) saturate(1.5);
  box-shadow: 0 20px 64px rgba(0, 0, 0, 0.1);
  opacity: 0.76;
  transform: translateY(22px) scale(0.98);
  transition: opacity 300ms ease, transform 300ms ease, border-color 300ms ease;
}

.story-card:nth-child(even) {
  margin-left: auto;
}

.story-card.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  border-color: rgba(255, 255, 255, 0.74);
}

.story-card span {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  margin-bottom: 36px;
  border-radius: 50%;
  color: white;
  background: rgba(29, 29, 31, 0.92);
  font-weight: 800;
}

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

.story-evidence {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 18px;
}

.story-evidence img {
  min-height: 94px;
  overflow: hidden;
  border-radius: 16px;
  cursor: zoom-in;
}

.story-evidence img {
  height: 100%;
  object-fit: cover;
}

.material-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: 14px;
  border-radius: var(--radius);
  aspect-ratio: 1.45;
  background: #ececf0;
}

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

.material-grid {
  display: grid;
  gap: 12px;
}

.material-index {
  display: flex;
  gap: 8px;
  margin: 0 calc(var(--pad) * -1) 14px;
  padding: 0 var(--pad) 6px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
}

.material-index::-webkit-scrollbar {
  display: none;
}

.material-index a {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  min-height: 38px;
  padding: 0 13px 0 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  scroll-snap-align: start;
}

.case-card {
  cursor: zoom-in;
}

.case-card:focus-visible,
.case-card:focus-visible {
  outline: 3px solid rgba(0, 113, 227, 0.34);
  outline-offset: 4px;
}

.material-index span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: var(--dark);
  font-size: 12px;
  font-weight: 800;
}

.material-card {
  display: grid;
  overflow: hidden;
}

.material-record {
  grid-template-columns: minmax(0, 1fr);
  align-items: stretch;
  scroll-margin-top: 104px;
}

.material-thumb {
  position: relative;
  display: grid;
  aspect-ratio: var(--media-ratio, 4 / 3);
  min-height: 0;
  padding: 12px;
  place-items: center;
  background: #ececf0;
}

.material-thumb img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
}

.material-thumb .stage {
  position: absolute;
  right: 10px;
  bottom: 10px;
}

.material-image-placeholder {
  display: grid;
  width: 100%;
  height: 100%;
  min-height: 160px;
  place-items: center;
  align-content: center;
  gap: 8px;
  border: 1px dashed rgba(29, 29, 31, 0.16);
  border-radius: 22px;
  color: rgba(29, 29, 31, 0.54);
  background:
    radial-gradient(circle at 22% 18%, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0) 34%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.68), rgba(219, 223, 230, 0.56));
}

.material-image-placeholder b {
  color: var(--ink);
  font-size: 15px;
}

.material-image-placeholder small {
  font-size: 12px;
}

.material-body {
  min-width: 0;
  padding: 18px;
}

.product-list,
.viewer-product-list {
  display: grid;
  gap: 8px;
  margin: 16px 0;
}

.product-row,
.viewer-product-list > div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: stretch;
  gap: 6px;
  padding: 12px;
  border: 1px solid rgba(29, 29, 31, 0.07);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
}

.product-thumb {
  display: grid;
  min-height: 92px;
  place-items: center;
  overflow: hidden;
  border: 1px dashed rgba(29, 29, 31, 0.14);
  border-radius: 14px;
  background:
    radial-gradient(circle at 24% 18%, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0) 36%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.76), rgba(224, 228, 235, 0.62));
}

.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.product-thumb span {
  color: rgba(29, 29, 31, 0.46);
  font-size: 12px;
  font-weight: 700;
}

.product-copy {
  display: grid;
  min-width: 0;
  align-content: center;
  gap: 6px;
}

.product-row b,
.viewer-product-list b {
  font-size: 13px;
  line-height: 1.35;
}

.product-row span,
.viewer-product-list span {
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
}

.product-row small,
.viewer-product-list small,
.viewer-product-list em,
.product-row i,
.viewer-product-list i {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
  line-height: 1.45;
}

.product-row i,
.viewer-product-list i {
  color: rgba(29, 29, 31, 0.56);
}

.product-row em,
.viewer-product-list em {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  padding: 4px 7px;
  border-radius: 999px;
  background: rgba(29, 29, 31, 0.05);
}

.material-top {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.stage {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  border-radius: 50%;
  color: white;
  background: var(--dark);
  font-size: 14px;
  font-weight: 800;
}

.spec-list {
  display: grid;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.brand-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 12px;
}

.brand-cloud span {
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.68);
  font-size: 12px;
  font-weight: 650;
}

.spec-table {
  display: grid;
  margin-top: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.spec-table div {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  border-top: 1px solid var(--line);
}

.spec-table div:first-child {
  border-top: 0;
}

.spec-table b,
.spec-table span {
  padding: 10px;
  font-size: 12px;
  line-height: 1.45;
}

.spec-table b {
  color: var(--muted);
  background: rgba(29, 29, 31, 0.035);
  font-weight: 700;
}

.spec-table span {
  color: var(--ink);
}

.material-craft-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.material-craft-heading {
  display: grid;
  gap: 4px;
}

.material-craft-heading span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.material-craft-heading b {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.35;
}

.material-craft {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
  overflow: hidden;
  border: 1px solid rgba(29, 29, 31, 0.07);
  border-radius: 18px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.72), rgba(245, 245, 247, 0.56)),
    rgba(255, 255, 255, 0.5);
}

.material-craft img {
  width: 100%;
  height: 100%;
  min-height: 108px;
  border-radius: 14px;
  object-fit: cover;
  background: #e5e5ea;
}

.material-craft-copy {
  display: grid;
  min-width: 0;
  align-content: center;
  gap: 6px;
}

.material-craft-copy > span {
  width: fit-content;
  padding: 4px 7px;
  border-radius: 999px;
  color: rgba(29, 29, 31, 0.7);
  background: rgba(29, 29, 31, 0.055);
  font-size: 11px;
  font-weight: 800;
}

.material-craft-copy b {
  font-size: 14px;
  line-height: 1.35;
}

.material-craft-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.craft-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}

.craft-checks small {
  padding: 5px 7px;
  border-radius: 999px;
  color: rgba(29, 29, 31, 0.66);
  background: rgba(29, 29, 31, 0.045);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
}

.spec-list div {
  display: grid;
  gap: 4px;
}

.spec-list dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.spec-list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
}

.case-rail {
  display: flex;
  gap: 14px;
  margin-inline: calc(var(--pad) * -1);
  padding: 0 var(--pad) 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.case-rail::-webkit-scrollbar {
  display: none;
}

.case-card {
  position: relative;
  flex: 0 0 min(86vw, 420px);
  height: clamp(500px, 132vw, 560px);
  overflow: hidden;
  border-radius: var(--radius);
  background: #d8d8dc;
  scroll-snap-align: center;
  box-shadow: var(--shadow);
}

.case-card img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
}

.case-body {
  position: absolute;
  inset: auto 0 0;
  z-index: 1;
  padding: 22px;
  color: white;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 14px;
}

.case-meta span {
  padding: 6px 9px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 12px;
  backdrop-filter: blur(14px);
}

.case-card p {
  color: rgba(255, 255, 255, 0.76);
}

.brief-panel,
.contact-card {
  display: grid;
  gap: 24px;
  padding: 24px;
}

.brief-form,
.brief-checklist {
  display: grid;
  gap: 12px;
}

.brief-workspace {
  display: grid;
  gap: 14px;
}

.info-form {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.5);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.76);
  backdrop-filter: blur(18px) saturate(1.3);
}

.brief-checklist article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.58);
}

.brief-checklist span {
  display: block;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.02em;
}

.brief-checklist h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.brief-checklist p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.brief-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.brief-form input,
.brief-form select,
.brief-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 14px;
  color: var(--ink);
  background: var(--surface-soft);
  outline: none;
  font: inherit;
}

.brief-form input:focus,
.brief-form select:focus,
.brief-form textarea:focus {
  border-color: rgba(0, 113, 227, 0.48);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.1);
}

.brief-form button {
  min-height: 48px;
}

.brief-form textarea {
  resize: vertical;
}

.brief-form .wide {
  width: 100%;
}

.form-note {
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.config-launch {
  position: relative;
  display: grid;
  gap: 10px;
  width: 100%;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 26px;
  padding: 22px;
  color: white;
  background:
    radial-gradient(circle at 82% 14%, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0) 34%),
    linear-gradient(145deg, rgba(29, 29, 31, 0.94), rgba(74, 74, 80, 0.86));
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.16);
  text-align: left;
  font: inherit;
}

.config-launch::after {
  content: "进入";
  position: absolute;
  right: 18px;
  bottom: 18px;
  display: grid;
  min-width: 58px;
  height: 34px;
  place-items: center;
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.86);
  font-size: 13px;
  font-weight: 800;
}

.config-launch span {
  color: rgba(255, 255, 255, 0.58);
  font-size: 11px;
  font-weight: 780;
  letter-spacing: 0.08em;
}

.config-launch strong {
  max-width: 8em;
  font-size: 28px;
  line-height: 1.02;
  letter-spacing: 0;
}

.config-launch em {
  max-width: 18em;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-style: normal;
  line-height: 1.5;
}

.demand-section {
  min-height: 100dvh;
  padding-top: 92px;
  padding-bottom: 110px;
  background:
    linear-gradient(180deg, rgba(248, 248, 250, 0.98), rgba(236, 237, 242, 0.92)),
    var(--bg);
  scroll-margin-top: 0;
}

.demand-page {
  display: grid;
  gap: 22px;
}

.demand-intro,
.demand-card {
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.075);
  backdrop-filter: blur(26px) saturate(1.35);
}

.demand-intro {
  padding: 34px 26px 30px;
}

.demand-intro h2 {
  max-width: 6em;
  margin-bottom: 16px;
  font-size: clamp(48px, 13vw, 78px);
  line-height: 0.96;
}

.demand-intro p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.68;
}

.brief-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.brief-meta span {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(29, 29, 31, 0.045);
  font-size: 12px;
  font-weight: 700;
}

.demand-form {
  display: grid;
  gap: 22px;
}

.demand-card {
  overflow: hidden;
}

.step-head {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 28px 24px 24px;
}

.step-no {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: var(--muted);
  background: rgba(29, 29, 31, 0.06);
  font-size: 13px;
  font-weight: 800;
}

.step-head h3 {
  margin-bottom: 7px;
  font-size: 23px;
  letter-spacing: 0;
}

.step-head p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.58;
}

.field-grid,
.choice-block,
.textarea-field,
.aux-summary-panel,
.base-list,
.aux-custom {
  padding-inline: 24px;
}

.field-grid {
  display: grid;
}

.field {
  display: grid;
  gap: 12px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-size: 14px;
  font-weight: 760;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 56px;
  border: 0;
  border-radius: 18px;
  padding: 16px 17px;
  color: var(--ink);
  background: rgba(245, 245, 247, 0.86);
  font: inherit;
  font-weight: 500;
  outline: none;
}

.field textarea {
  min-height: 156px;
  resize: vertical;
}

.choice-block {
  padding-top: 26px;
  padding-bottom: 26px;
  border-top: 1px solid var(--line);
}

.choice-block h4 {
  display: flex;
  gap: 11px;
  align-items: center;
  margin: 0 0 16px;
  font-size: 16px;
}

.choice-block h4 span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: var(--dark);
  font-size: 11px;
  font-weight: 800;
}

.choice-intro {
  margin: -6px 0 16px 45px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.choice-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

#designSchemeOptions {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.design-choice-block {
  padding-inline: 16px;
}

.scheme-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 0fr;
  gap: 0;
  min-height: 84px;
  border: 0;
  border-radius: 22px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  text-align: left;
  font: inherit;
  overflow: hidden;
  will-change: grid-template-columns, transform, opacity;
  transition:
    grid-column 680ms cubic-bezier(0.16, 1, 0.3, 1),
    grid-template-columns 680ms cubic-bezier(0.16, 1, 0.3, 1),
    gap 620ms cubic-bezier(0.16, 1, 0.3, 1),
    background 420ms ease,
    box-shadow 620ms ease,
    padding 620ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 680ms cubic-bezier(0.16, 1, 0.3, 1);
}

.scheme-card.reflowing {
  z-index: 2;
}

.scheme-card:not(.active) {
  height: 84px;
}

.scheme-card:focus {
  outline: none;
}

.scheme-card:focus-visible {
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.86),
    0 0 0 2px rgba(29, 29, 31, 0.16),
    0 14px 38px rgba(0, 0, 0, 0.08);
}

.scheme-swatch {
  display: grid;
  min-height: 84px;
  align-items: end;
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 20px;
  padding: 10px;
  color: var(--scheme-paper);
  background:
    radial-gradient(circle at 72% 12%, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0) 36%),
    linear-gradient(150deg, rgba(255, 255, 255, 0.98) 0%, rgba(238, 240, 244, 0.94) 48%, rgba(215, 219, 226, 0.88) 100%),
    var(--scheme-ink);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.96),
    inset 0 -18px 36px rgba(155, 163, 176, 0.16),
    0 10px 28px rgba(0, 0, 0, 0.055);
  transform: translateX(0);
  transition:
    min-height 620ms cubic-bezier(0.16, 1, 0.3, 1),
    border-radius 620ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 620ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 520ms ease;
}

.scheme-swatch b {
  display: block;
  max-width: 5em;
  font-size: 14px;
  line-height: 1.05;
  font-weight: 760;
  letter-spacing: 0;
  opacity: 1;
  transform-origin: 50% 100%;
  transition:
    max-width 680ms cubic-bezier(0.16, 1, 0.3, 1),
    font-size 680ms cubic-bezier(0.16, 1, 0.3, 1),
    line-height 680ms cubic-bezier(0.16, 1, 0.3, 1),
    opacity 520ms ease,
    transform 760ms cubic-bezier(0.16, 1, 0.3, 1);
}

.scheme-copy {
  display: grid;
  align-content: center;
  gap: 8px;
  min-width: 0;
  max-height: 0;
  padding: 0;
  opacity: 0;
  overflow: hidden;
  clip-path: inset(0 100% 0 0 round 16px);
  transform: translateY(10px);
  transition:
    max-height 620ms cubic-bezier(0.16, 1, 0.3, 1),
    clip-path 620ms cubic-bezier(0.16, 1, 0.3, 1),
    opacity 420ms ease 180ms,
    transform 520ms cubic-bezier(0.16, 1, 0.3, 1) 120ms,
    padding 520ms ease;
}

.scheme-copy strong {
  font-size: 13px;
  line-height: 1.45;
}

.scheme-copy small {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.48;
}

.scheme-card.active {
  grid-column: 1 / -1;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 12px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.82),
    inset 0 0 0 1.5px rgba(29, 29, 31, 0.08),
    0 22px 68px rgba(0, 0, 0, 0.085);
}

.scheme-card.active .scheme-swatch {
  min-height: 104px;
  justify-items: center;
  text-align: center;
  border-radius: 18px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.96),
    inset 0 -18px 36px rgba(155, 163, 176, 0.14),
    0 16px 36px rgba(0, 0, 0, 0.07);
  transform: translateX(-2px);
}

.scheme-card.active.settled .scheme-swatch {
  padding: 12px 8px;
}

.scheme-card.active.settled .scheme-swatch b {
  max-width: 4.6em;
  font-size: 12px;
  line-height: 1.18;
  opacity: 0.98;
  transform: translateY(-38px) scale(0.98);
}

.scheme-card.active .scheme-copy {
  max-height: 220px;
  clip-path: inset(0 0 0 0 round 16px);
  opacity: 1;
  padding: 4px 4px 4px 0;
  transform: translateY(0);
}

.scheme-card.active .scheme-copy strong {
  color: var(--ink);
}

.scheme-selected {
  display: grid;
  gap: 4px;
  margin-top: 10px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(29, 29, 31, 0.045);
}

.scheme-selected b {
  font-size: 14px;
}

.scheme-selected span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.scheme-hint {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.choice-pill {
  display: grid;
  gap: 7px;
  min-height: 72px;
  border: 0;
  border-radius: 20px;
  padding: 16px;
  color: var(--ink);
  background: rgba(245, 245, 247, 0.88);
  text-align: left;
  font: inherit;
  box-shadow: inset 0 0 0 1px rgba(29, 29, 31, 0.035);
}

.choice-pill img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 16px;
  object-fit: cover;
}

.pill-label {
  font-size: 15px;
  font-weight: 800;
  line-height: 1.35;
}

.pill-note {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.choice-pill.active {
  color: white;
  background:
    linear-gradient(145deg, rgba(16, 16, 18, 0.98), rgba(54, 54, 59, 0.94)),
    var(--dark);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.14);
}

.choice-pill.active .pill-note {
  color: rgba(255, 255, 255, 0.68);
}

.expand-card,
.material-expand {
  display: grid;
  gap: 9px;
  margin-top: 14px;
  padding: 18px;
  border-radius: 22px;
  background: rgba(245, 245, 247, 0.78);
}

.expand-card b,
.material-expand b {
  font-size: 15px;
}

.expand-card p,
.material-expand p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.68;
}

.effect-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  object-fit: cover;
  background: #e5e5ea;
}

.aux-summary-panel {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  justify-content: space-between;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.aux-summary-panel h4 {
  margin: 0 0 6px;
  font-size: 16px;
}

.aux-summary-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.aux-summary-panel span {
  flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--muted);
  background: #f5f5f7;
  font-size: 12px;
  font-weight: 760;
}

.base-list {
  display: grid;
  margin-top: 16px;
}

.base-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.base-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  color: var(--muted);
  background: #f5f5f7;
  font-size: 13px;
  font-weight: 800;
}

.base-item b {
  font-size: 14px;
}

.base-item p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.aux-toggle,
.primary-button {
  display: grid;
  width: calc(100% - 48px);
  min-height: 56px;
  margin: 20px 24px 24px;
  place-items: center;
  border: 0;
  border-radius: 18px;
  background: #f5f5f7;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  font-weight: 760;
}

.aux-custom {
  display: none;
}

.aux-custom.open {
  display: grid;
}

.submit-button {
  width: 100%;
  margin: 22px 0 0;
  border-radius: 22px;
  color: white;
  background: var(--dark);
}

.demand-form > .form-note {
  padding-inline: 2px;
  text-align: center;
}

.configurator {
  display: grid;
  gap: 16px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.66);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(20px) saturate(1.35);
}

.config-head {
  display: grid;
  gap: 14px;
}

.config-head h3 {
  margin-bottom: 8px;
  font-size: 24px;
}

.config-head h2 {
  margin-bottom: 10px;
  font-size: clamp(38px, 11vw, 72px);
}

.config-head p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.config-back {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 16px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.7);
  font: inherit;
  font-size: 13px;
  font-weight: 760;
}

.config-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 5px;
  border-radius: 999px;
  background: rgba(29, 29, 31, 0.06);
}

.config-tabs button {
  min-height: 38px;
  border: 0;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 760;
}

.config-tabs button.active {
  color: white;
  background: var(--dark);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14);
}

.config-summary {
  display: grid;
  gap: 8px;
  padding: 14px;
  border-radius: 20px;
  color: white;
  background:
    linear-gradient(145deg, rgba(29, 29, 31, 0.94), rgba(67, 67, 72, 0.86)),
    var(--dark);
}

.config-summary div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.config-summary b {
  font-size: 15px;
}

.config-summary span,
.config-summary p {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 12px;
  line-height: 1.45;
}

.aux-config-group {
  border-color: rgba(29, 29, 31, 0.22);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(245, 245, 247, 0.72)),
    rgba(255, 255, 255, 0.58);
}

.aux-config-title span {
  background: var(--accent);
}

.aux-config-body {
  display: none;
  padding: 0 12px 12px;
}

.aux-config-body.open {
  display: grid;
  gap: 10px;
}

.aux-base-note {
  display: grid;
  gap: 6px;
  padding: 14px;
  border-radius: 16px;
  background: rgba(29, 29, 31, 0.045);
}

.aux-base-note b {
  font-size: 15px;
}

.aux-base-note p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.config-groups {
  display: grid;
  gap: 10px;
}

.config-group {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.54);
}

.config-title {
  display: grid;
  width: 100%;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  border: 0;
  padding: 14px;
  color: var(--ink);
  background: transparent;
  text-align: left;
  font: inherit;
}

.config-title span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: var(--dark);
  font-size: 12px;
  font-weight: 800;
}

.config-title b {
  font-size: 16px;
  line-height: 1.25;
}

.config-title em {
  grid-column: 2;
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
  font-weight: 650;
}

.config-options {
  display: none;
  gap: 8px;
  padding: 0 12px 12px;
}

.config-options.open {
  display: grid;
}

.config-option {
  display: grid;
  gap: 5px;
  width: 100%;
  min-height: 68px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.66);
  text-align: left;
  font: inherit;
}

.config-option img {
  width: 100%;
  aspect-ratio: 4 / 3;
  margin-bottom: 4px;
  border-radius: 12px;
  object-fit: cover;
  background: #ececf0;
}

.config-option span {
  font-size: 14px;
  font-weight: 760;
  line-height: 1.28;
}

.config-option small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.42;
}

.config-option.active {
  border-color: rgba(29, 29, 31, 0.9);
  color: white;
  background: var(--dark);
}

.config-option.active small {
  color: rgba(255, 255, 255, 0.68);
}

.config-detail {
  display: grid;
  gap: 7px;
  padding: 14px;
  border-radius: 16px;
  background: rgba(29, 29, 31, 0.045);
}

.config-detail b {
  font-size: 15px;
}

.config-detail p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.contact-card dl {
  display: grid;
  gap: 12px;
  margin: 0;
}

.contact-card dl div {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.contact-card dt {
  color: var(--muted);
}

.contact-card dd {
  margin: 0;
}

.bottom-cta {
  position: fixed;
  right: 14px;
  bottom: max(14px, env(safe-area-inset-bottom));
  left: 14px;
  z-index: 45;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 44px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(24px) saturate(1.8);
  transition: opacity 240ms ease, transform 240ms ease;
}

body.in-immersive .bottom-cta {
  opacity: 0;
  pointer-events: none;
  transform: translateY(130%);
}

body.in-hero .bottom-cta {
  opacity: 0;
  pointer-events: none;
  transform: translateY(130%);
}

body.in-catalog .bottom-cta {
  opacity: 0;
  pointer-events: none;
  transform: translateY(130%);
}

body.in-brief .bottom-cta {
  opacity: 0;
  pointer-events: none;
  transform: translateY(130%);
}

body.in-config .bottom-cta {
  opacity: 0;
  pointer-events: none;
  transform: translateY(130%);
}

.bottom-cta a {
  display: grid;
  min-height: 44px;
  place-items: center;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.bottom-cta a:first-child {
  color: white;
  background: var(--dark);
}

.bottom-cta a:last-child {
  background: rgba(29, 29, 31, 0.06);
}

body.viewer-open {
  overflow: hidden;
}

.viewer {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  align-items: end;
  justify-items: center;
  padding: max(18px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom));
  opacity: 0;
  pointer-events: none;
  transition: opacity 260ms ease;
}

.viewer.open {
  opacity: 1;
  pointer-events: auto;
}

.viewer-backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.32), rgba(255, 255, 255, 0) 38%),
    rgba(29, 29, 31, 0.42);
  backdrop-filter: blur(22px) saturate(1.55);
}

.viewer-panel {
  position: relative;
  width: min(100%, 760px);
  max-height: 90dvh;
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 30px;
  background: rgba(247, 247, 250, 0.88);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(28px) saturate(1.35);
  transform: translateY(24px) scale(0.98);
  transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.viewer.open .viewer-panel {
  transform: translateY(0) scale(1);
}

.viewer-close {
  position: sticky;
  top: 14px;
  z-index: 2;
  float: right;
  display: grid;
  width: 40px;
  height: 40px;
  margin: 14px 14px -54px 0;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.64);
  border-radius: 50%;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  font-size: 24px;
  line-height: 1;
  backdrop-filter: blur(18px) saturate(1.45);
}

.viewer-media {
  display: grid;
  width: 100%;
  min-height: 310px;
  aspect-ratio: 1 / 1;
  place-items: center;
  overflow: hidden;
  border-radius: 30px 30px 0 0;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.72), rgba(219, 220, 226, 0.78)),
    #ececf0;
}

.viewer-media img {
  width: 100%;
  height: 100%;
  padding: 12px;
  object-fit: contain;
}

.viewer-copy {
  clear: both;
  padding: 22px;
}

.viewer-copy .eyebrow {
  margin-bottom: 10px;
}

.viewer-copy h2 {
  max-width: 8em;
  margin-bottom: 14px;
  font-size: clamp(28px, 8vw, 50px);
  line-height: 0.98;
  letter-spacing: 0;
}

.viewer-copy p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.viewer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.viewer-tags span {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  font-weight: 700;
}

.viewer-table {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.42);
}

.viewer-table div {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  border-top: 1px solid var(--line);
}

.viewer-table div:first-child {
  border-top: 0;
}

.viewer-table b,
.viewer-table span {
  padding: 12px;
  font-size: 13px;
  line-height: 1.45;
}

.viewer-table b {
  color: var(--muted);
  background: rgba(29, 29, 31, 0.035);
  font-weight: 750;
}

.viewer-video-placeholder {
  position: relative;
  display: grid;
  width: 100%;
  height: 100%;
  min-height: 310px;
  align-content: end;
  gap: 8px;
  padding: 24px;
  color: white;
  background:
    linear-gradient(145deg, rgba(29, 29, 31, 0.82), rgba(92, 92, 98, 0.66)),
    radial-gradient(circle at 72% 18%, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0) 34%);
}

.viewer-video-placeholder span {
  position: absolute;
  top: 24px;
  left: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  clip-path: polygon(36% 26%, 36% 74%, 78% 50%);
}

.viewer-video-placeholder b {
  font-size: 24px;
  letter-spacing: 0;
}

.viewer-video-placeholder small {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  line-height: 1.45;
}

.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 420ms ease, transform 420ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 760px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.74fr);
    align-items: end;
  }

  .hero-copy {
    grid-column: 1 / 2;
  }

  .hero-media {
    grid-column: 2 / 3;
    grid-row: 1 / span 2;
    aspect-ratio: 0.78;
  }

  .metric-strip {
    grid-column: 1 / 2;
  }

  .principles {
    grid-template-columns: repeat(3, 1fr);
  }

  .material-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .material-record:first-child {
    grid-column: span 2;
  }

  .material-record:first-child .material-craft {
    grid-template-columns: 156px minmax(0, 1fr);
  }

  .brief-panel {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }

  .brief-form {
    grid-template-columns: 1fr 1fr;
  }

  .brief-checklist {
    grid-template-columns: 1fr 1fr;
  }

  .brief-form .wide {
    grid-column: 1 / -1;
  }

  .demand-section {
    padding-top: 112px;
  }

  .demand-page {
    max-width: 980px;
    margin: 0 auto;
    gap: 28px;
  }

  .demand-intro {
    padding: 46px;
  }

  .demand-card {
    border-radius: 34px;
  }

  .step-head {
    padding: 34px 36px 28px;
  }

  .field-grid,
  .choice-block,
  .textarea-field,
  .aux-summary-panel,
  .base-list,
  .aux-custom {
    padding-inline: 36px;
  }

  .field-grid {
    grid-template-columns: 1fr 1fr;
    column-gap: 18px;
  }

  .field.full,
  .field.textarea-field {
    grid-column: 1 / -1;
  }

  .choice-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  #designSchemeOptions {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .scheme-card.active {
    grid-template-columns: 132px minmax(0, 1fr);
  }

  .scheme-card.active .scheme-swatch {
    min-height: 138px;
  }

  .scheme-card.active.settled .scheme-swatch b {
    font-size: 13px;
    line-height: 1.2;
    transform: translateY(-50px) scale(0.98);
  }

  .aux-toggle,
  .primary-button {
    width: calc(100% - 72px);
    margin-inline: 36px;
  }

  .config-head {
    grid-template-columns: minmax(0, 1fr) 180px;
    align-items: start;
  }

  .config-options.open {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .config-option:has(img) {
    grid-row: span 2;
  }

  .config-detail {
    grid-column: 1 / -1;
  }

  .bottom-cta {
    right: 24px;
    left: auto;
    width: 320px;
  }

  .viewer {
    align-items: center;
    padding: 24px;
  }

  .viewer-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
    width: min(92vw, 980px);
    max-height: min(86dvh, 820px);
    border-radius: 34px;
  }

  .viewer-close {
    position: absolute;
    top: 18px;
    right: 18px;
    float: none;
    margin: 0;
  }

  .viewer-media {
    min-height: 560px;
    aspect-ratio: auto;
    border-radius: 34px 0 0 34px;
  }

  .viewer-copy {
    display: grid;
    align-content: center;
    padding: 34px;
  }
}

@media (max-width: 390px) {
  :root {
    --pad: 18px;
  }

  .nav-shell {
    width: calc(100% - 16px);
  }

  .brand {
    font-size: 13px;
  }

  .nav-links a {
    padding-inline: 8px;
  }

  h1 {
    font-size: 50px;
  }

  .scheme-card {
    min-height: 82px;
  }

  .scheme-card:not(.active) {
    height: 82px;
  }

  .scheme-swatch b {
    font-size: 13px;
  }

  .product-row,
  .material-craft {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 8px;
    padding: 10px;
  }

  .product-thumb {
    min-height: 82px;
  }

  .material-craft img {
    min-height: 94px;
  }

  .scheme-card.active {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 10px;
  }

  .scheme-card.active .scheme-swatch {
    min-height: 104px;
  }

  .scheme-card.active.settled .scheme-swatch b {
    max-width: 4.4em;
    font-size: 11px;
    line-height: 1.2;
    transform: translateY(-38px) scale(0.98);
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}