:root {
  --bg: #f5f0e8;
  --bg-soft: #fbf7f1;
  --bg-elevated: rgba(255, 250, 243, 0.78);
  --ink: #26211d;
  --ink-strong: #171411;
  --muted: #665d53;
  --line: rgba(38, 33, 29, 0.14);
  --line-strong: rgba(38, 33, 29, 0.24);
  --accent: #b66a2f;
  --accent-deep: #7f4d26;
  --accent-soft: rgba(182, 106, 47, 0.12);
  --surface-dark: #211a16;
  --surface-dark-line: rgba(255, 244, 232, 0.14);
  --surface-dark-muted: rgba(255, 244, 232, 0.74);
  --shadow-soft: 0 16px 40px rgba(56, 39, 25, 0.07);
  --font-body: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: Georgia, "Times New Roman", "Songti SC", serif;
  --max-width: 1180px;
  --header-height: 88px;
  --radius-large: 32px;
  --radius-medium: 20px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 16%, rgba(197, 142, 94, 0.13), transparent 24%),
    radial-gradient(circle at 82% 10%, rgba(127, 77, 38, 0.08), transparent 18%),
    linear-gradient(180deg, #f6f1ea 0%, #f2ece3 45%, #f7f2eb 100%);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

img {
  max-width: 100%;
}

.shell {
  width: min(var(--max-width), calc(100% - 56px));
  margin: 0 auto;
}

.hero .shell {
  width: min(1248px, calc(100% - 44px));
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  transition:
    background-color 0.35s ease-in-out,
    border-color 0.35s ease-in-out,
    transform 0.35s ease-in-out,
    box-shadow 0.35s ease-in-out;
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: transparent;
  transition: background-color 0.35s ease-in-out;
}

.site-header.is-scrolled {
  background: rgba(245, 240, 232, 0.82);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 24px rgba(56, 39, 25, 0.04);
}

.site-header.is-scrolled::after {
  background: var(--line);
}

.header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 1 1 auto;
  gap: 16px;
  min-width: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  color: var(--accent-deep);
  background: rgba(255, 250, 243, 0.55);
}

.brand-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.brand-copy strong {
  max-width: 520px;
  overflow: hidden;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.brand-copy small {
  max-width: 420px;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.25;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.site-nav {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 4px;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 12px;
  min-width: 0;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 250, 243, 0.58);
  white-space: nowrap;
}

.language-button {
  min-width: 46px;
  height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 0.82rem;
  cursor: pointer;
  transition: background-color 0.24s ease-in-out, color 0.24s ease-in-out, transform 0.24s ease-in-out;
}

.language-button:hover,
.language-button.is-active {
  background: var(--ink);
  color: #fff7ef;
}

.language-button:hover {
  transform: translateY(-1px);
}

.nav-link,
.footer-nav a {
  position: relative;
  padding: 9px 10px;
  color: var(--muted);
  font-size: 0.92rem;
  transition: color 0.25s ease-in-out, transform 0.25s ease-in-out;
}

.nav-link::after,
.footer-nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 7px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease-in-out;
}

.nav-link:hover,
.nav-link.is-active,
.footer-nav a:hover {
  color: var(--ink);
}

.nav-link:hover::after,
.nav-link.is-active::after,
.footer-nav a:hover::after {
  transform: scaleX(1);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition:
    transform 0.3s ease-in-out,
    background-color 0.3s ease-in-out,
    color 0.3s ease-in-out,
    border-color 0.3s ease-in-out,
    box-shadow 0.3s ease-in-out;
  cursor: pointer;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: #fff7ef;
  box-shadow: 0 14px 24px rgba(127, 77, 38, 0.14);
}

.button-primary:hover {
  background: var(--accent-deep);
  box-shadow: 0 18px 30px rgba(127, 77, 38, 0.18);
}

.button-secondary {
  border-color: var(--line-strong);
  color: var(--ink);
  background: rgba(255, 250, 243, 0.48);
}

.button-secondary:hover {
  border-color: rgba(182, 106, 47, 0.36);
  background: rgba(255, 250, 243, 0.9);
}

.nav-cta {
  min-height: 42px;
  margin-left: 4px;
  padding: 0 16px;
  font-size: 0.9rem;
}

.menu-toggle {
  display: none;
  position: relative;
  width: 48px;
  height: 48px;
  padding: 0;
  background: rgba(255, 250, 243, 0.52);
  border: 1px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
}

.menu-toggle span {
  position: absolute;
  left: 14px;
  right: 14px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.25s ease-in-out, opacity 0.25s ease-in-out;
}

.menu-toggle span:first-child {
  top: 19px;
}

.menu-toggle span:last-child {
  bottom: 19px;
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.hero {
  position: relative;
  padding: calc(var(--header-height) + 22px) 0 54px;
  min-height: auto;
  overflow: hidden;
}

.hero-noise {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.14) 0, rgba(255, 255, 255, 0) 18%, rgba(255, 255, 255, 0) 82%, rgba(255, 255, 255, 0.12) 100%),
    linear-gradient(rgba(38, 33, 29, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(38, 33, 29, 0.03) 1px, transparent 1px);
  background-size: 100% 100%, 72px 72px, 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 90%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  align-items: center;
  gap: 40px;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  color: var(--accent-deep);
  font-size: 0.82rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-weight: 600;
}

.eyebrow::before {
  content: "";
  display: block;
  width: 24px;
  height: 1px;
  background: currentColor;
}

.hero-title,
.section-head h2,
.strength-intro h2,
.about-copy h2,
.contact-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: transparent;
  background: linear-gradient(135deg, var(--ink-strong) 40%, var(--accent-deep) 100%);
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-title {
  max-width: 8.6em;
  font-size: clamp(2.65rem, 4.4vw, 4.05rem);
  line-height: 1.1;
}

.hero-lead {
  max-width: 34rem;
  margin: 18px 0 0;
  font-size: 1rem;
  line-height: 1.72;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  gap: 16px;
}

.proof-item {
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.proof-item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.95rem;
  color: var(--ink-strong);
}

.proof-item span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-visual {
  position: relative;
  min-height: 500px;
}

.art-frame {
  position: relative;
  min-height: 100%;
  padding: 24px 28px 32px;
  border: 1px solid rgba(127, 77, 38, 0.24);
  background:
    linear-gradient(145deg, rgba(255, 250, 243, 0.86), rgba(230, 217, 203, 0.4)),
    rgba(255, 250, 243, 0.5);
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, 85% 0, 100% 11%, 100% 100%, 0 100%);
  overflow: hidden;
}

.art-frame::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(127, 77, 38, 0.14);
  clip-path: polygon(0 0, 88% 0, 100% 11%, 100% 100%, 0 100%);
}

.art-header,
.art-foot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  z-index: 1;
}

.art-header {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.art-track {
  position: relative;
  display: grid;
  gap: 0;
  margin: 28px 0 20px;
  z-index: 1;
}

.art-step {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid rgba(38, 33, 29, 0.12);
}

.art-step:last-child {
  border-bottom: 1px solid rgba(38, 33, 29, 0.12);
}

.art-index {
  color: var(--accent-deep);
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.art-step h2 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  font-family: var(--font-display);
  font-weight: 600;
}

.art-step p {
  margin: 0;
  color: var(--muted);
}

.art-foot {
  align-items: flex-start;
  padding-top: 16px;
  border-top: 1px solid rgba(38, 33, 29, 0.12);
}

.art-foot div {
  max-width: 220px;
}

.art-foot strong {
  display: block;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.art-foot span {
  color: var(--muted);
  font-size: 0.92rem;
}

.art-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(127, 77, 38, 0.2);
  pointer-events: none;
}

.orbit-a {
  width: 160px;
  height: 160px;
  top: -28px;
  right: -22px;
}

.orbit-b {
  width: 240px;
  height: 240px;
  bottom: 18px;
  left: -42px;
}

.art-note {
  position: absolute;
  color: rgba(38, 33, 29, 0.55);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  pointer-events: none;
}

.note-a {
  top: 44px;
  right: 18px;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

body.lang-en .brand-copy strong {
  max-width: 450px;
  font-size: 1rem;
  letter-spacing: 0.01em;
}

body.lang-en .brand-copy small {
  max-width: 460px;
}

body.lang-en {
  line-height: 1.68;
}

body.lang-en .eyebrow {
  letter-spacing: 0.18em;
}

body.lang-en .hero-grid {
  gap: 48px;
}

body.lang-en .hero-title {
  max-width: 10.6em;
  font-size: clamp(2.35rem, 3.85vw, 3.55rem);
  line-height: 1.1;
}

body.lang-en .hero-lead {
  max-width: 31rem;
  margin-top: 22px;
  line-height: 1.76;
}

body.lang-en .hero-proof {
  gap: 18px 20px;
}

.section {
  padding: 120px 0;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.8fr);
  gap: 32px 40px;
  align-items: end;
  margin-bottom: 64px;
}

.section-head h2,
.strength-intro h2,
.about-copy h2,
.contact-copy h2 {
  font-size: clamp(1.65rem, 2.8vw, 2.4rem);
  line-height: 1.18;
}

.section-copy,
.strength-intro p,
.about-copy p,
.contact-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.72;
}

.strength-intro h2 + p,
.about-copy h2 + p,
.contact-copy h2 + p {
  margin-top: 24px;
}

body.lang-en .section-head {
  gap: 32px 34px;
  margin-bottom: 46px;
}

body.lang-en .section-copy,
body.lang-en .strength-intro p,
body.lang-en .about-copy p,
body.lang-en .contact-copy p,
body.lang-en .platform-intro {
  line-height: 1.78;
}

body.lang-en .strength-intro h2 + p,
body.lang-en .about-copy h2 + p,
body.lang-en .contact-copy h2 + p {
  margin-top: 28px;
}

.service-list,
.strength-list,
.case-list {
  border-top: 1px solid var(--line);
}

.service-item,
.strength-item,
.case-item {
  border-bottom: 1px solid var(--line);
}

.service-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1.08fr) minmax(220px, 0.72fr);
  gap: 30px;
  padding: 30px 0;
  transition: transform 0.32s ease-in-out, border-color 0.32s ease-in-out, background-color 0.32s ease-in-out;
}

.service-item:hover {
  transform: translateX(6px);
  border-color: rgba(127, 77, 38, 0.26);
}

.service-index,
.strength-index {
  color: var(--accent-deep);
  font-family: var(--font-display);
  font-size: 1.5rem;
}

.service-item h3,
.strength-item h3,
.case-item h3,
.about-columns h3 {
  margin: 0 0 12px;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.service-item p,
.strength-item p,
.case-item p {
  margin: 0;
  color: var(--muted);
}

.service-meta span,
.case-meta span {
  display: block;
  color: var(--accent-deep);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.service-deliverables strong,
.case-scope strong {
  display: block;
  margin-bottom: 10px;
  font-size: 0.84rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-strong);
}

.service-deliverables ul,
.plain-list,
.case-scope ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-deliverables li,
.plain-list li,
.case-scope li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
}

.service-deliverables li + li,
.plain-list li + li,
.case-scope li + li {
  margin-top: 8px;
}

.service-deliverables li::before,
.plain-list li::before,
.case-scope li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(182, 106, 47, 0.48);
}

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

.business-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1.1fr) minmax(240px, 0.82fr);
  gap: 28px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
  transition: transform 0.3s ease-in-out, border-color 0.3s ease-in-out;
}

body.lang-en .business-item {
  gap: 32px;
  padding: 36px 0;
}

.business-item:hover {
  transform: translateX(6px);
  border-color: rgba(127, 77, 38, 0.26);
}

.business-index {
  color: var(--accent-deep);
  font-family: var(--font-display);
  font-size: 1.5rem;
}

.business-label,
.application-label {
  display: block;
  margin-bottom: 10px;
  color: var(--accent-deep);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.business-main h3,
.application-item h3,
.platform-highlight h3 {
  margin: 0 0 12px;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.business-main p,
.application-item p,
.platform-highlight p {
  margin: 0;
  color: var(--muted);
}

body.lang-en .business-main p,
body.lang-en .application-item p,
body.lang-en .platform-highlight p,
body.lang-en .plain-list li {
  line-height: 1.72;
}

.business-tags {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 12px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

body.lang-en .business-tags {
  gap: 10px;
}

.business-tags li {
  padding: 10px 14px;
  border: 1px solid rgba(38, 33, 29, 0.12);
  border-radius: 999px;
  background: rgba(255, 250, 243, 0.56);
  color: var(--ink);
  font-size: 0.92rem;
}

.platform {
  background:
    radial-gradient(circle at 88% 14%, rgba(182, 106, 47, 0.08), transparent 22%),
    linear-gradient(180deg, rgba(255, 250, 243, 0.54), rgba(244, 238, 229, 0.78)),
    var(--bg-soft);
}

.platform-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.92fr) minmax(0, 1.08fr);
  gap: 44px;
  align-items: center;
}

body.lang-en .platform-layout {
  gap: 50px;
}

.platform-figure {
  margin: 0;
}

.platform-image-shell {
  position: relative;
  aspect-ratio: 4 / 3;
  min-height: 0;
  padding: 16px;
  border: 1px solid rgba(127, 77, 38, 0.18);
  border-radius: 24px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255, 250, 243, 0.9), rgba(225, 212, 198, 0.52)),
    rgba(255, 250, 243, 0.6);
  box-shadow: var(--shadow-soft);
}

.platform-image {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  min-height: 0;
  border-radius: 18px;
  object-fit: contain;
  display: block;
  background: rgba(255, 250, 243, 0.64);
}

.platform-image-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
}

.platform-fallback-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(38, 33, 29, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(38, 33, 29, 0.06) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.85), transparent 88%);
}

.platform-fallback-overlay {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  max-width: 280px;
  padding: 26px 24px;
  border: 1px solid rgba(127, 77, 38, 0.18);
  border-radius: 24px;
  background: rgba(255, 250, 243, 0.84);
  text-align: center;
}

.platform-fallback-overlay span {
  color: var(--accent-deep);
  font-size: 0.76rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.platform-fallback-overlay strong {
  font-family: var(--font-display);
  font-size: 1.45rem;
  line-height: 1.18;
}

.platform-figure.is-fallback .platform-image {
  opacity: 0;
}

.platform-figure:not(.is-fallback) .platform-image-fallback {
  opacity: 0;
  pointer-events: none;
}

.platform-caption {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.platform-copy-wrap {
  display: grid;
  gap: 26px;
}

body.lang-en .platform-copy-wrap {
  gap: 30px;
}

.platform-intro-block {
  display: grid;
  gap: 22px;
}

body.lang-en .platform-intro-block {
  gap: 24px;
}

.platform-intro {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.75;
}

.platform-highlight-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

body.lang-en .platform-highlight-list {
  gap: 18px 20px;
}

.platform-highlight {
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
}

.platform-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

body.lang-en .platform-detail-grid {
  gap: 20px;
}

.platform-detail-block {
  padding: 22px;
  border: 1px solid rgba(38, 33, 29, 0.12);
  border-radius: 24px;
  background: rgba(255, 250, 243, 0.64);
}

.detail-label {
  display: block;
  margin-bottom: 10px;
  color: var(--accent-deep);
  font-size: 0.76rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.platform-detail-block h3 {
  margin: 0 0 16px;
  font-size: 1.2rem;
  line-height: 1.24;
}

.platform-disclaimer {
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.applications {
  background:
    linear-gradient(180deg, rgba(255, 250, 243, 0.12), rgba(255, 250, 243, 0)),
    #221b16;
  color: #fff7ef;
}

.applications .section-copy,
.applications .application-item p {
  color: var(--surface-dark-muted);
}

.applications .section-head h2,
.applications .application-item h3 {
  color: #fff7ef;
}

.applications .eyebrow,
.applications .application-label {
  color: #f1be8a;
}

.application-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

body.lang-en .application-list {
  gap: 20px;
}

.application-item {
  padding: 24px;
  border: 1px solid var(--surface-dark-line);
  border-radius: 24px;
  background: rgba(255, 247, 239, 0.03);
}

body.lang-en .application-item {
  padding: 26px;
}

.strengths,
.capabilities {
  background:
    linear-gradient(180deg, rgba(255, 250, 243, 0.4), rgba(230, 217, 203, 0.2)),
    var(--bg-soft);
}

.strength-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
}

.strength-intro {
  position: sticky;
  top: calc(var(--header-height) + 28px);
  align-self: start;
}

.strength-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 24px;
  padding: 28px 0;
}

.case-head h2,
.cases .section-copy {
  color: #fff3e6;
}

.cases {
  background:
    radial-gradient(circle at 92% 12%, rgba(182, 106, 47, 0.18), transparent 20%),
    radial-gradient(circle at 8% 92%, rgba(182, 106, 47, 0.12), transparent 24%),
    var(--surface-dark);
  color: #fff7ef;
}

.cases .eyebrow,
.case-label,
.case-scope strong,
.case-kicker {
  color: #f1be8a;
}

.cases .service-list,
.cases .strength-list,
.cases .case-list,
.cases .case-item {
  border-color: var(--surface-dark-line);
}

.case-item {
  display: grid;
  grid-template-columns: minmax(220px, 0.65fr) minmax(0, 1.05fr) minmax(220px, 0.68fr);
  gap: 34px;
  padding: 34px 0;
}

.case-item h3,
.case-scope strong {
  color: #fffaf4;
}

.case-copy p,
.case-scope li,
.case-result span {
  color: var(--surface-dark-muted);
}

.case-scope {
  margin-top: 18px;
}

.case-result {
  display: grid;
  gap: 14px;
}

.case-result-block {
  padding-top: 14px;
  border-top: 1px solid var(--surface-dark-line);
}

.case-result-block strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.05rem;
  font-weight: 600;
  color: #fff7ef;
}

.about-layout,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 48px;
  align-items: start;
}

body.lang-en .about-layout,
body.lang-en .contact-layout {
  gap: 56px;
}

.about-copy {
  max-width: 660px;
}

.about-copy p + p {
  margin-top: 18px;
}

.about-detail {
  padding-top: 8px;
}

.about-quote {
  margin-bottom: 36px;
  padding: 28px 0 32px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.about-quote p {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.1vw, 1.8rem);
  line-height: 1.2;
}

.about-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
}

.contact {
  background:
    radial-gradient(circle at 12% 18%, rgba(182, 106, 47, 0.1), transparent 18%),
    var(--bg-soft);
}

.contact-meta {
  display: grid;
  gap: 16px;
  margin-top: 34px;
}

body.lang-en .contact-meta {
  margin-top: 38px;
}

.contact-link {
  display: grid;
  gap: 4px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

.contact-link[aria-disabled="true"] {
  cursor: default;
}

.contact-link span {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.contact-link strong {
  font-size: 1.1rem;
  font-weight: 600;
}

.contact-form {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  background: rgba(255, 250, 243, 0.72);
  box-shadow: var(--shadow-soft);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.field {
  display: grid;
  gap: 10px;
}

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

.field span {
  font-size: 0.9rem;
  color: var(--ink-strong);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 15px 16px;
  border: 1px solid rgba(38, 33, 29, 0.14);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.66);
  color: var(--ink);
  transition: border-color 0.25s ease-in-out, box-shadow 0.25s ease-in-out, transform 0.25s ease-in-out;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: rgba(182, 106, 47, 0.44);
  box-shadow: 0 0 0 4px rgba(182, 106, 47, 0.1);
}

.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: rgba(160, 76, 50, 0.55);
}

.field-error {
  min-height: 1.1em;
  color: #a04c32;
  font-size: 0.82rem;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 16px;
}

.form-status {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer {
  padding: 26px 0 42px;
  border-top: 1px solid var(--line);
}

.footer-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 24px;
  align-items: center;
}

.footer-brand .brand-copy small {
  max-width: 26ch;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-meta {
  display: grid;
  justify-items: end;
  gap: 6px;
  color: var(--muted);
  font-size: 0.92rem;
}

[data-hero] {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.75s ease-in-out,
    transform 0.75s ease-in-out;
  transition-delay: var(--delay, 0s);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .hero-grid,
  .section-head,
  .business-item,
  .about-layout,
  .contact-layout,
  .platform-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-bottom: 60px;
  }

  .hero-visual {
    min-height: 520px;
    max-width: 720px;
  }

  .platform-figure {
    max-width: 760px;
  }

  .platform-highlight-list,
  .platform-detail-grid,
  .application-list {
    grid-template-columns: 1fr;
  }

  .strength-layout {
    grid-template-columns: 1fr;
  }

  .strength-intro {
    position: static;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .footer-meta {
    justify-items: start;
  }
}

@media (max-width: 1080px) {
  :root {
    --header-height: 82px;
  }

  .header-actions {
    gap: 10px;
  }

  .shell {
    width: min(var(--max-width), calc(100% - 40px));
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 20px;
    right: 20px;
    display: grid;
    gap: 6px;
    padding: 16px;
    background: rgba(251, 247, 241, 0.96);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: 0 18px 32px rgba(56, 39, 25, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.28s ease-in-out, transform 0.28s ease-in-out, visibility 0.28s ease-in-out;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-link,
  .nav-cta {
    width: 100%;
    justify-content: center;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 4px;
  }

  .hero-proof,
  .business-item,
  .strength-item,
  .about-columns,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .language-switch {
    order: -1;
  }

  .proof-item {
    padding-left: 0;
    border-left: 0;
    padding-top: 18px;
    border-top: 1px solid var(--line);
  }

  .proof-item:first-child {
    padding-top: 0;
    border-top: 0;
  }

  .hero-title {
    max-width: 8.4em;
    font-size: clamp(2.1rem, 7.6vw, 3rem);
    line-height: 1.08;
  }

  body.lang-en .hero-title {
    max-width: 10.8em;
  }

  body.lang-en .hero-grid {
    gap: 34px;
  }

  body.lang-en .section-head {
    gap: 26px;
    margin-bottom: 42px;
  }

  body.lang-en .about-layout,
  body.lang-en .contact-layout,
  body.lang-en .platform-layout {
    gap: 44px;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-visual {
    min-height: 380px;
  }

  .platform-image-shell,
  .platform-image {
    min-height: 0;
  }

  .section,
  .site-footer {
    padding-top: 76px;
  }

  .contact-form {
    padding: 22px;
  }
}

@media (max-width: 640px) {
  .shell {
    width: calc(100% - 28px);
  }

  .header-shell {
    gap: 12px;
  }

  .header-actions {
    gap: 8px;
  }

  .brand-copy small {
    display: none;
  }

  .brand {
    gap: 10px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    font-size: 0.95rem;
  }

  .brand-copy strong {
    max-width: 54vw;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
  }

  body.lang-en .brand-copy strong {
    max-width: 50vw;
    font-size: 0.86rem;
    letter-spacing: 0;
  }

  .hero {
    padding-top: calc(var(--header-height) + 12px);
    padding-bottom: 28px;
  }

  .hero-grid {
    gap: 22px;
  }

  body.lang-en .hero-grid {
    gap: 26px;
  }

  body.lang-en .hero-lead {
    max-width: none;
    margin-top: 18px;
    line-height: 1.7;
  }

  body.lang-en .section-head {
    gap: 22px;
    margin-bottom: 36px;
  }

  body.lang-en .strength-intro h2 + p,
  body.lang-en .about-copy h2 + p,
  body.lang-en .contact-copy h2 + p {
    margin-top: 22px;
  }

  body.lang-en .business-item {
    gap: 24px;
    padding: 30px 0;
  }

  body.lang-en .application-item {
    padding: 22px;
  }

  .hero-actions,
  .form-foot {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-visual {
    min-height: 340px;
  }

  .art-frame {
    padding: 20px 20px 24px;
  }

  .art-step {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .business-tags {
    gap: 8px;
  }

  .business-tags li {
    width: 100%;
    border-radius: 18px;
  }

  .art-foot {
    display: grid;
    gap: 20px;
  }

  .art-foot div {
    max-width: none;
  }

  .note-a {
    display: none;
  }

  .contact-link strong {
    font-size: 1rem;
  }

  .platform-image-shell,
  .platform-image {
    min-height: 0;
  }
}

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

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

  [data-hero],
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ── Blade Inspection Product Section ───────────────────────────── */

.blade-inspection {
  background:
    radial-gradient(circle at 16% 20%, rgba(182, 106, 47, 0.06), transparent 28%),
    radial-gradient(circle at 80% 80%, rgba(127, 77, 38, 0.05), transparent 24%),
    linear-gradient(180deg, rgba(255, 250, 243, 0.6), rgba(244, 238, 229, 0.82)),
    var(--bg-soft);
}

.blade-section-block {
  margin-top: 56px;
}

.blade-block-title {
  margin: 0 0 28px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

/* Feature Cards */
.blade-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.blade-feature-card {
  padding: 28px 24px;
  border: 1px solid rgba(127, 77, 38, 0.14);
  border-radius: var(--radius-medium);
  background:
    linear-gradient(145deg, rgba(255, 250, 243, 0.92), rgba(240, 230, 218, 0.38));
  box-shadow: 0 8px 24px rgba(56, 39, 25, 0.04);
  transition: transform 0.32s ease-in-out, box-shadow 0.32s ease-in-out, border-color 0.32s ease-in-out;
}

.blade-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(56, 39, 25, 0.08);
  border-color: rgba(182, 106, 47, 0.3);
}

.blade-feature-card h3 {
  margin: 0 0 16px;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink-strong);
  line-height: 1.35;
}

.blade-feature-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.blade-feature-card li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

.blade-feature-card li + li {
  margin-top: 10px;
}

.blade-feature-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(182, 106, 47, 0.5);
}

/* Specs Table */
.blade-specs-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.blade-specs-group {
  border: 1px solid rgba(127, 77, 38, 0.12);
  border-radius: var(--radius-medium);
  overflow: hidden;
  background: rgba(255, 250, 243, 0.6);
}

.blade-specs-group-label {
  margin: 0;
  padding: 14px 20px;
  background: linear-gradient(135deg, var(--surface-dark), #2d231b);
  color: var(--surface-dark-muted);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.blade-specs-table {
  width: 100%;
  border-collapse: collapse;
}

.blade-specs-table tr {
  border-bottom: 1px solid rgba(38, 33, 29, 0.08);
}

.blade-specs-table tr:last-child {
  border-bottom: none;
}

.blade-specs-table tr:hover {
  background: rgba(182, 106, 47, 0.04);
}

.blade-specs-key,
.blade-specs-val {
  padding: 11px 20px;
  font-size: 0.92rem;
  vertical-align: top;
}

.blade-specs-key {
  width: 42%;
  font-weight: 600;
  color: var(--ink-strong);
  white-space: nowrap;
}

.blade-specs-val {
  color: var(--muted);
}

/* Scenario Cards */
.blade-scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.blade-scenario-card {
  padding: 28px 24px;
  border: 1px solid rgba(127, 77, 38, 0.14);
  border-radius: var(--radius-medium);
  background: rgba(255, 250, 243, 0.72);
  transition: transform 0.32s ease-in-out, box-shadow 0.32s ease-in-out;
}

.blade-scenario-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(56, 39, 25, 0.06);
}

.blade-scenario-card h3 {
  margin: 0 0 18px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink-strong);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.blade-scenario-body {
  display: grid;
  gap: 14px;
}

.blade-scenario-label {
  display: block;
  margin-bottom: 4px;
  color: var(--accent-deep);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.blade-scenario-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

/* Scenario Notes */
.blade-scenario-notes {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.blade-scenario-notes li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  border: 1px solid rgba(38, 33, 29, 0.08);
  border-radius: 14px;
  background: rgba(255, 250, 243, 0.5);
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

.blade-note-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 700;
}

/* Workflow Pipeline */
.blade-workflow-pipeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.blade-workflow-step {
  position: relative;
  padding: 22px 18px;
  border: 1px solid rgba(127, 77, 38, 0.14);
  border-radius: var(--radius-medium);
  background: rgba(255, 250, 243, 0.72);
  text-align: center;
  transition: transform 0.28s ease-in-out, box-shadow 0.28s ease-in-out;
}

.blade-workflow-step:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(56, 39, 25, 0.06);
}

.blade-workflow-step::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -14px;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 1.1rem;
  z-index: 2;
}

.blade-workflow-step:nth-child(4n)::after,
.blade-workflow-step:last-child::after {
  display: none;
}

.blade-workflow-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--surface-dark), #2d231b);
  color: rgba(255, 244, 232, 0.92);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
}

.blade-workflow-step strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.98rem;
  color: var(--ink-strong);
}

.blade-workflow-step p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.5;
}

/* Capabilities Table */
.blade-cap-table {
  border: 1px solid rgba(127, 77, 38, 0.12);
  border-radius: var(--radius-medium);
  overflow: hidden;
}

.blade-cap-table .blade-specs-key {
  width: 22%;
}

/* CTA */
.blade-cta {
  margin-top: 52px;
  text-align: center;
}

/* Blade Inspection Responsive */
@media (max-width: 960px) {
  .blade-feature-grid,
  .blade-scenario-grid {
    grid-template-columns: 1fr;
  }

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

  .blade-workflow-step:nth-child(4n)::after {
    display: block;
  }

  .blade-workflow-step:nth-child(2n)::after {
    display: none;
  }

  .blade-specs-wrap {
    grid-template-columns: 1fr;
  }

  .blade-cap-table .blade-specs-key {
    width: 32%;
  }
}

@media (max-width: 640px) {
  .blade-workflow-pipeline {
    grid-template-columns: 1fr;
  }

  .blade-workflow-step::after {
    content: "↓";
    top: auto;
    right: auto;
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%);
  }

  .blade-workflow-step:nth-child(4n)::after {
    display: block;
  }

  .blade-workflow-step:nth-child(2n)::after {
    display: block;
  }

  .blade-workflow-step:last-child::after {
    display: none;
  }

  .blade-section-block {
    margin-top: 40px;
  }

  .blade-specs-key {
    width: auto;
    white-space: normal;
  }

  .blade-cap-table .blade-specs-key {
    width: auto;
  }
}

/* Dropdown Menu CSS */
.nav-dropdown { position: relative; display: inline-block; }
.dropdown-toggle { cursor: default; }
.dropdown-menu { display: none; position: absolute; top: 100%; left: 0; background-color: var(--surface-raised); min-width: 160px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); border-radius: 8px; z-index: 100; flex-direction: column; overflow: hidden; padding: 8px 0; }
.nav-dropdown:hover .dropdown-menu { display: flex; }
.dropdown-menu a { color: var(--text-base); padding: 12px 16px; text-decoration: none; display: block; font-size: 0.9rem; font-weight: 500; transition: background-color 0.2s, color 0.2s; }
.dropdown-menu a:hover, .dropdown-menu a.active { background-color: var(--surface-overlay); color: var(--primary); }
@media (max-width: 1080px) { .dropdown-menu { position: static; box-shadow: none; background: transparent; padding: 0 0 0 16px; display: none; flex-direction: column; } .nav-dropdown.is-open .dropdown-menu { display: flex; } }