:root {
  --ink: #101725;
  --ink-soft: #1b2637;
  --muted: #5d6877;
  --line: #d9dee6;
  --line-dark: #354154;
  --paper: #f3f5f7;
  --white: #ffffff;
  --blue: #1f5f8a;
  --blue-bright: #2980b9;
  --blue-pale: #eaf3f8;
  --cyan: #87d7f2;
  --red: #e0262e;
  --max: 1280px;
  --header-height: 82px;
  --shadow: 0 22px 60px rgba(15, 23, 37, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body, button, input, select { font: inherit; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, select, input { border-radius: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid rgba(41, 128, 185, 0.45); outline-offset: 3px; }
[hidden] { display: none !important; }
section[id] { scroll-margin-top: calc(var(--header-height) + 24px); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: 0.8rem 1rem;
  color: var(--white);
  background: var(--ink);
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid rgba(16, 23, 37, 0.11);
  backdrop-filter: blur(18px);
}
.header-inner {
  width: min(var(--max), calc(100% - 3rem));
  height: var(--header-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: max-content;
  text-decoration: none;
}
.wordmark {
  position: relative;
  display: inline-block;
  padding-bottom: 0.18rem;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1.58rem;
  font-weight: 900;
  font-style: italic;
  line-height: 1;
  letter-spacing: -0.065em;
}
.wordmark::after {
  content: "";
  position: absolute;
  left: 0.14rem;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--red);
}
.brand-company {
  padding-left: 1rem;
  color: #465266;
  border-left: 1px solid var(--line);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}
.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 1.7vw, 1.8rem);
  margin-left: auto;
  font-size: 0.88rem;
  font-weight: 650;
}
.desktop-nav a {
  position: relative;
  padding: 0.5rem 0;
  text-decoration: none;
}
.desktop-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0.12rem;
  height: 2px;
  background: var(--red);
  transition: right 180ms ease;
}
.desktop-nav a:hover::after { right: 0; }
.header-actions { display: flex; align-items: center; gap: 0.8rem; }
.nav-cta {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0 1.05rem;
  color: var(--white);
  background: var(--ink);
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 750;
}
.nav-cta:hover { background: var(--blue); }
.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0 11px;
  border: 1px solid var(--line);
  background: var(--white);
  cursor: pointer;
}
.menu-button span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
}
.mobile-menu {
  width: min(var(--max), calc(100% - 3rem));
  margin: 0 auto;
  padding: 0 0 1.25rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}
.mobile-menu a {
  padding: 0.9rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 700;
}

.hero {
  width: min(var(--max), calc(100% - 3rem));
  min-height: 680px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  background: var(--white);
}
.hero-copy {
  position: relative;
  z-index: 1;
  padding: clamp(5rem, 8vw, 7.5rem) clamp(2.5rem, 4.8vw, 4.8rem) 4.5rem;
}
.eyebrow, .section-kicker {
  margin: 0 0 1.2rem;
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}
.section-kicker.light { color: var(--cyan); }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(3.3rem, 5.6vw, 5.8rem);
  line-height: 1.01;
  letter-spacing: -0.06em;
}
.hero-lede {
  max-width: 610px;
  margin: 2rem 0 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.9;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.35rem; }
.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 1.35rem;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 760;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--red); }
.button-primary:hover { background: #c91e26; }
.button-secondary { border-color: var(--line); background: var(--white); }
.button-secondary:hover { border-color: var(--ink); }
.button-white { color: var(--ink); background: var(--white); }
.hero-proof {
  margin: 4rem 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
.hero-proof div { padding-top: 1rem; border-top: 2px solid var(--ink); }
.hero-proof dt { font-size: 1.03rem; font-weight: 800; }
.hero-proof dd { margin: 0.45rem 0 0; color: var(--muted); font-size: 0.76rem; line-height: 1.48; }
.hero-visual {
  position: relative;
  min-height: 600px;
  overflow: hidden;
  background: #0c111a;
}
.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 30%;
  background: rgba(5, 9, 15, 0.56);
  pointer-events: none;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 57% center; }
.visual-label {
  position: absolute;
  z-index: 2;
  top: 2rem;
  left: 2rem;
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.15rem;
  color: var(--white);
  border-left: 3px solid var(--red);
  background: rgba(9, 14, 24, 0.86);
}
.visual-label span { color: var(--cyan); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.2em; }
.visual-label strong { font-size: 0.9rem; }
.selector-section {
  width: min(var(--max), calc(100% - 3rem));
  margin: 0 auto;
  padding: 3.5rem 4.5rem;
  color: var(--white);
  background: var(--ink);
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: 4rem;
  align-items: center;
}
.selector-intro h2 {
  margin: 0;
  font-size: clamp(2rem, 3.1vw, 3.15rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}
.selector-intro > p:last-child { margin: 1.1rem 0 0; color: #b9c2d0; font-size: 0.88rem; line-height: 1.72; }
.quick-selector { display: grid; grid-template-columns: 1fr 1fr auto; gap: 0.7rem; align-items: end; }
.quick-selector label { display: grid; gap: 0.5rem; color: #cbd3de; font-size: 0.76rem; font-weight: 650; }
.quick-selector select, .quick-selector button { min-width: 0; min-height: 52px; border: 0; }
.quick-selector select { padding: 0 2.4rem 0 1rem; color: var(--ink); background: var(--white); }
.quick-selector button {
  padding: 0 1.2rem;
  color: var(--white);
  background: var(--blue-bright);
  cursor: pointer;
  font-weight: 760;
}
.quick-selector button:hover { background: var(--blue); }
.selector-result { grid-column: 1 / -1; padding-top: 2rem; border-top: 1px solid var(--line-dark); }
.selector-result-heading { display: flex; align-items: baseline; gap: 1rem; }
.selector-result-heading span { color: var(--cyan); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.14em; }
.selector-result-heading strong { font-size: 1.2rem; }
.selector-result-list {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line-dark);
}
.selector-result-list button {
  min-height: 94px;
  padding: 1rem;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.8rem;
  text-align: left;
  color: var(--white);
  border: 0;
  border-right: 1px solid var(--line-dark);
  background: transparent;
  cursor: pointer;
}
.selector-result-list button:last-child { border-right: 0; }
.selector-result-list button:hover { background: var(--ink-soft); }
.selector-result-list span { grid-row: 1 / 3; color: var(--cyan); font-size: 0.72rem; font-weight: 800; }
.selector-result-list b { font-size: 1rem; }
.selector-result-list small { margin-top: 0.25rem; color: #adb8c8; line-height: 1.4; }
.selector-result > p, .selector-result > div > p {
  margin: 1rem 0 0;
  color: #aeb8c8;
  font-size: 0.75rem;
}
.selector-result > a { display: inline-block; margin-top: 1rem; color: var(--cyan); font-weight: 750; }

.section {
  width: min(var(--max), calc(100% - 3rem));
  margin: 0 auto;
  padding: 7rem 4.5rem;
  background: var(--white);
}
.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.72fr);
  gap: 4rem;
  align-items: end;
}
.section-heading h2 {
  margin: 0;
  font-size: clamp(2.55rem, 4.3vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: -0.05em;
}
.section-heading > p { margin: 0; color: var(--muted); line-height: 1.82; }
.materials-heading {
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.materials-heading h2,
.company-heading h2 {
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: keep-all;
}
.materials-heading > p { max-width: 760px; }
.compact-heading h2 { font-size: clamp(2.35rem, 3.8vw, 3.75rem); }
.products-section { border-bottom: 1px solid var(--line); }
.catalog-toolbar {
  margin-top: 3.25rem;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto auto;
  gap: 1rem;
  align-items: center;
}
.search-field input {
  width: 100%;
  min-height: 48px;
  padding: 0 1rem;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
}
.search-field input:focus { border-color: var(--blue-bright); background: var(--white); }
.filter-group { display: flex; border: 1px solid var(--line); }
.filter-button {
  min-height: 46px;
  padding: 0 0.95rem;
  color: var(--muted);
  border: 0;
  border-right: 1px solid var(--line);
  background: var(--white);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
}
.filter-button:last-child { border-right: 0; }
.filter-button:hover, .filter-button.active { color: var(--white); background: var(--ink); }
.result-count { min-width: 6.6rem; margin: 0; color: var(--muted); text-align: right; font-size: 0.78rem; }
.product-grid {
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.product-card {
  position: relative;
  min-height: 500px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
  transition: background-color 160ms ease, transform 160ms ease;
}
.product-card:hover {
  z-index: 1;
  background: #f9fbfc;
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.product-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #8892a1;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}
.material-tag { color: var(--blue); }
.product-ring {
  width: 122px;
  height: 122px;
  margin: 2rem auto;
  border: 21px solid var(--ring-color);
  border-radius: 50%;
  box-shadow: 8px 13px 0 rgba(15, 23, 37, 0.08), inset 4px 5px 0 rgba(255, 255, 255, 0.18);
  transform: rotateX(58deg) rotateZ(-12deg);
}
.product-card .product-code {
  margin: 0;
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.13em;
}
.product-card h3 { margin: 0.55rem 0 0; font-size: 1.42rem; line-height: 1.25; }
.product-summary {
  min-height: 3.8rem;
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.68;
}
.product-specs {
  margin: 1.4rem 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.product-specs div { padding: 0.8rem 0.65rem 0.8rem 0; }
.product-specs dt { color: #8a94a2; font-size: 0.68rem; }
.product-specs dd { margin: 0.3rem 0 0; font-size: 0.76rem; font-weight: 720; line-height: 1.35; }
.product-detail-button {
  margin-top: auto;
  padding: 1rem 0 0;
  color: var(--ink);
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-weight: 780;
}
.product-detail-button::after { content: " →"; color: var(--red); }
.empty-result {
  grid-column: 1 / -1;
  padding: 4rem 1.5rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: center;
}
.empty-result p { color: var(--muted); }
.data-note, .evidence-note { margin: 1.2rem 0 0; color: #778292; font-size: 0.74rem; line-height: 1.65; }

.feature-band {
  width: min(var(--max), calc(100% - 3rem));
  margin: 0 auto;
  padding: 5.5rem 4.5rem;
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 5rem;
  align-items: center;
  color: var(--white);
  background: var(--blue);
}
.feature-band h2 {
  margin: 0;
  font-size: clamp(2.4rem, 4vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}
.dimension-figure { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 2.5rem; align-items: center; }
.ring-diagram {
  position: relative;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 26px solid rgba(255, 255, 255, 0.84);
  border-radius: 50%;
  box-shadow: 13px 16px 0 rgba(6, 42, 67, 0.22);
}
.ring-diagram span {
  position: absolute;
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 800;
}
.ring-diagram span::before, .ring-diagram span::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 40px;
  height: 1px;
  background: rgba(255, 255, 255, 0.7);
}
.ring-diagram span::before { right: calc(100% + 8px); }
.ring-diagram span::after { left: calc(100% + 8px); }
.ring-diagram i { position: absolute; width: 80%; height: 1px; background: rgba(255, 255, 255, 0.7); }
.ring-diagram b { position: absolute; right: -2.5rem; top: 0.7rem; color: var(--white); font-size: 0.72rem; }
.dimension-figure dl { margin: 0; }
.dimension-figure dl div { padding: 1rem 0; border-top: 1px solid rgba(255, 255, 255, 0.25); }
.dimension-figure dl div:last-child { border-bottom: 1px solid rgba(255, 255, 255, 0.25); }
.dimension-figure dt { color: #c7e6f3; font-size: 0.72rem; font-weight: 700; }
.dimension-figure dd { margin: 0.4rem 0 0; font-size: 1.05rem; font-weight: 750; line-height: 1.45; }

.performance-section { border-bottom: 1px solid var(--line); }
.performance-layout {
  margin-top: 3.2rem;
  display: grid;
  grid-template-columns: minmax(230px, 0.35fr) minmax(0, 1fr);
  gap: 2rem;
}
.performance-highlight { padding: 2rem; color: var(--white); background: var(--ink); }
.performance-highlight span { color: var(--cyan); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.1em; }
.performance-highlight strong {
  display: block;
  margin-top: 2.5rem;
  font-size: clamp(4rem, 7vw, 6.4rem);
  line-height: 1;
  letter-spacing: -0.07em;
}
.performance-highlight p { margin: 1.3rem 0 0; color: #c4ccd8; font-size: 0.78rem; line-height: 1.7; }
.table-wrap { overflow-x: auto; border-top: 3px solid var(--blue); }
table { width: 100%; min-width: 660px; border-collapse: collapse; }
th, td { padding: 1.05rem 1rem; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--blue); background: var(--blue-pale); font-size: 0.73rem; letter-spacing: 0.06em; }
td { color: #394457; font-size: 0.85rem; }
td:first-child { color: var(--ink); font-weight: 720; }

.materials-section { border-bottom: 1px solid var(--line); }
.material-list {
  margin-top: 3.3rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.material-list article {
  min-height: 285px;
  padding: 1.6rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.material-list article > span { color: var(--red); font-size: 0.7rem; font-weight: 850; letter-spacing: 0.14em; }
.material-list h3 { margin: 3.2rem 0 0; font-size: 1.22rem; line-height: 1.35; }
.material-list p { margin: 0.85rem 0 0; color: var(--muted); font-size: 0.86rem; line-height: 1.7; }
.material-list small { display: block; margin-top: 1.4rem; color: var(--blue); font-size: 0.72rem; font-weight: 750; }

.industries-section {
  width: min(var(--max), calc(100% - 3rem));
  margin: 0 auto;
  padding: 6.5rem 4.5rem;
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: 5rem;
  color: var(--white);
  background: var(--ink-soft);
}
.industries-copy { align-self: start; position: sticky; top: calc(var(--header-height) + 2rem); }
.industries-copy h2 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 4.05rem);
  line-height: 1.08;
  letter-spacing: -0.05em;
}
.industries-copy > p:last-child { max-width: 390px; margin: 1.5rem 0 0; color: #b5bfce; line-height: 1.8; }
.industry-list { display: grid; }
.industry-list article {
  padding: 1.6rem 0;
  display: grid;
  grid-template-columns: 44px minmax(150px, 0.65fr) 1fr;
  gap: 1.2rem;
  align-items: baseline;
  border-top: 1px solid var(--line-dark);
}
.industry-list article:last-child { border-bottom: 1px solid var(--line-dark); }
.industry-list span { color: var(--cyan); font-size: 0.72rem; font-weight: 800; }
.industry-list h3 { margin: 0; font-size: 1.24rem; }
.industry-list p { margin: 0; color: #aeb9c8; font-size: 0.86rem; line-height: 1.65; }

.capability-section { border-bottom: 1px solid var(--line); }
.process-flow {
  margin: 3.4rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  list-style: none;
  border-top: 3px solid var(--blue);
  border-left: 1px solid var(--line);
}
.process-flow li {
  min-height: 180px;
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.process-flow span { color: var(--blue); font-size: 0.72rem; font-weight: 850; }
.process-flow strong { margin-top: auto; font-size: 1.02rem; }
.process-flow small { margin-top: 0.48rem; color: var(--muted); line-height: 1.45; }
.capacity-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.capacity-grid div {
  min-height: 132px;
  padding: 1.35rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.capacity-grid strong { display: block; color: var(--blue); font-size: 2.2rem; line-height: 1; letter-spacing: -0.05em; }
.capacity-grid span { display: block; margin-top: 0.72rem; color: var(--muted); font-size: 0.78rem; line-height: 1.5; }
.quality-note {
  margin-top: 3.6rem;
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 3rem;
  color: var(--white);
  background: var(--blue);
}
.quality-note h3 { margin: 0; font-size: 1.65rem; }
.quality-note > p { margin: 0; color: #d3e6f0; line-height: 1.82; }

.company-section {
  width: min(var(--max), calc(100% - 3rem));
  margin: 0 auto;
  padding: 7rem 4.5rem;
  background: var(--blue-pale);
}
.company-statement {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.company-statement .section-kicker { grid-column: 1 / -1; }
.company-statement h2 {
  margin: 0;
  font-size: clamp(2.45rem, 4vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}
.company-statement > p:last-child { max-width: 760px; margin: 0; color: var(--muted); line-height: 1.85; }
.timeline { margin-top: 4rem; display: grid; grid-template-columns: repeat(5, 1fr); border-top: 2px solid var(--blue); }
.timeline div { position: relative; padding: 1.4rem 1rem 0 0; }
.timeline div::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  background: var(--red);
}
.timeline time { color: var(--blue); font-size: 1.1rem; font-weight: 850; }
.timeline p { margin: 0.55rem 0 0; color: var(--muted); font-size: 0.78rem; line-height: 1.55; }
.company-facts {
  margin-top: 3.6rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(31, 95, 138, 0.28);
  border-left: 1px solid rgba(31, 95, 138, 0.28);
}
.company-facts article {
  min-height: 175px;
  padding: 1.5rem;
  border-right: 1px solid rgba(31, 95, 138, 0.28);
  border-bottom: 1px solid rgba(31, 95, 138, 0.28);
}
.company-facts strong { color: var(--blue); font-size: 2.7rem; line-height: 1; letter-spacing: -0.06em; }
.company-facts p { margin: 1rem 0 0; color: #526579; font-size: 0.82rem; line-height: 1.62; }
.company-evidence { color: #61788c; }

.contact-section {
  width: min(var(--max), calc(100% - 3rem));
  margin: 0 auto;
  padding: 6rem 4.5rem;
  display: grid;
  grid-template-columns: 1fr minmax(320px, 0.72fr);
  gap: 5rem;
  align-items: center;
  color: var(--white);
  background: var(--ink);
}
.contact-section h2 {
  margin: 0;
  font-size: clamp(2.8rem, 5vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.055em;
}
.contact-section > div:first-child > p:last-child {
  max-width: 620px;
  margin: 1.5rem 0 0;
  color: #b8c2d0;
  line-height: 1.8;
}
.contact-card { padding: 2rem; border-left: 3px solid var(--red); background: var(--ink-soft); }
.contact-card > span { color: var(--cyan); font-size: 0.76rem; font-weight: 800; letter-spacing: 0.12em; }
.contact-phone {
  display: block;
  margin-top: 0.65rem;
  color: var(--white);
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  font-weight: 780;
  letter-spacing: -0.04em;
  text-decoration: none;
}
.contact-card p { margin: 1.25rem 0 1.5rem; color: #aeb9c8; font-size: 0.82rem; line-height: 1.7; }

footer {
  width: min(var(--max), calc(100% - 3rem));
  margin: 0 auto;
  padding: 3rem 4.5rem;
  display: grid;
  grid-template-columns: 0.62fr 1fr auto;
  gap: 3rem;
  align-items: end;
  color: #aab4c3;
  background: #090e17;
}
.footer-brand p, .footer-note, .copyright, .footer-legal p { margin: 0; font-size: 0.72rem; line-height: 1.65; }
.footer-wordmark { color: var(--white); }
.footer-brand p { margin-top: 0.75rem; }
.copyright { white-space: nowrap; }
.footer-legal { display: grid; gap: 0.35rem; justify-items: end; }
.footer-legal a { color: #c5cfdd; text-decoration: none; }
.footer-legal a:hover { color: var(--white); text-decoration: underline; }

.product-dialog {
  width: min(720px, calc(100% - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 0;
  color: var(--ink);
  border: 0;
  background: var(--white);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.32);
}
.product-dialog::backdrop { background: rgba(4, 8, 14, 0.72); }
.dialog-shell { position: relative; padding: 3.25rem; }
.dialog-close {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  padding: 0.45rem 0.65rem;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--white);
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 700;
}
.dialog-title-row { display: grid; grid-template-columns: 1fr 120px; gap: 2rem; align-items: center; }
.dialog-title-row span { color: var(--blue); font-size: 0.78rem; font-weight: 850; letter-spacing: 0.12em; }
.dialog-title-row h2 { margin: 0.45rem 0 0; font-size: clamp(2rem, 5vw, 3.5rem); letter-spacing: -0.05em; }
.dialog-ring {
  width: 102px;
  height: 102px;
  border: 19px solid var(--ring-color);
  border-radius: 50%;
  box-shadow: 7px 10px 0 rgba(15, 23, 37, 0.09), inset 3px 3px 0 rgba(255, 255, 255, 0.18);
  transform: rotateX(56deg) rotateZ(-12deg);
}
.dialog-summary { margin: 1.4rem 0 0; color: var(--muted); line-height: 1.75; }
.dialog-specs {
  margin: 1.8rem 0 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.dialog-specs div { padding: 1rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.dialog-specs dt { color: #818c9b; font-size: 0.7rem; }
.dialog-specs dd { margin: 0.4rem 0 0; font-size: 0.9rem; font-weight: 750; }
.dialog-applications { margin-top: 1.8rem; }
.dialog-applications h3 { margin: 0; font-size: 1rem; }
.dialog-applications ul { margin: 0.8rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; }
.dialog-applications li {
  padding: 0.48rem 0.72rem;
  color: var(--blue);
  border: 1px solid #bfd7e5;
  background: var(--blue-pale);
  font-size: 0.76rem;
  font-weight: 700;
}
.dialog-note { margin: 1.4rem 0; color: #758091; font-size: 0.74rem; line-height: 1.6; }

@media (max-width: 1120px) {
  :root { --header-height: 74px; }
  .header-inner { height: var(--header-height); }
  .brand-company { display: none; }
  .desktop-nav { gap: 1rem; }
  .hero { grid-template-columns: 1fr 0.94fr; }
  .hero-copy { padding-left: 3rem; padding-right: 2.5rem; }
  .selector-section, .feature-band, .industries-section, .contact-section { padding-left: 3rem; padding-right: 3rem; }
  .section, .company-section { padding-left: 3rem; padding-right: 3rem; }
  .catalog-toolbar { grid-template-columns: 1fr auto; }
  .result-count { grid-column: 1 / -1; text-align: left; }
  .material-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .menu-button { display: block; }
  .nav-cta { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding: 5rem 3rem 3.5rem; }
  .hero-visual { min-height: 500px; }
  .selector-section, .feature-band, .industries-section, .contact-section { grid-template-columns: 1fr; gap: 2.5rem; }
  .selector-section { padding-top: 3.5rem; padding-bottom: 3.5rem; }
  .section-heading, .company-statement { grid-template-columns: 1fr; gap: 1.5rem; }
  .section-heading > p { max-width: 650px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .dimension-figure { max-width: 690px; }
  .performance-layout { grid-template-columns: 1fr; }
  .performance-highlight { display: grid; grid-template-columns: 1fr auto; align-items: end; }
  .performance-highlight strong { grid-row: 1 / 3; grid-column: 2; margin: 0; }
  .process-flow { grid-template-columns: repeat(2, 1fr); }
  .industries-copy { position: static; }
  .timeline { grid-template-columns: repeat(3, 1fr); row-gap: 2rem; }
  .company-facts { grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-legal { justify-items: start; }
}

@media (max-width: 640px) {
  :root { --header-height: 68px; }
  .header-inner, .mobile-menu, .hero, .selector-section, .section, .feature-band, .industries-section,
  .company-section, .contact-section, footer { width: 100%; }
  .header-inner { padding: 0 1rem; }
  .wordmark { font-size: 1.38rem; }
  .mobile-menu { padding: 0 1rem 1rem; grid-template-columns: repeat(2, 1fr); }
  .hero-copy { padding: 4rem 1.25rem 3rem; }
  h1 { font-size: clamp(3rem, 14vw, 4.1rem); }
  .hero-lede { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-proof { grid-template-columns: 1fr; gap: 1rem; margin-top: 3rem; }
  .hero-visual { min-height: 390px; }
  .hero-visual img { object-position: 60% center; }
  .visual-label { top: 1.25rem; left: 1.25rem; }
  .selector-section, .feature-band, .industries-section, .contact-section { padding: 4.5rem 1.25rem; }
  .quick-selector { grid-template-columns: 1fr; }
  .selector-result-list { grid-template-columns: 1fr; }
  .selector-result-list button, .selector-result-list button:last-child {
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }
  .selector-result-list button:last-child { border-bottom: 0; }
  .section, .company-section { padding: 5rem 1.25rem; }
  .section-heading h2 { font-size: 2.6rem; }
  .materials-heading h2, .company-heading h2 { white-space: normal; }
  .catalog-toolbar { grid-template-columns: 1fr; }
  .filter-group { display: grid; grid-template-columns: repeat(2, 1fr); }
  .filter-button { border-bottom: 1px solid var(--line); }
  .product-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 475px; }
  .feature-band { gap: 3rem; }
  .dimension-figure { grid-template-columns: 1fr; }
  .ring-diagram { width: 190px; margin: 0 auto; }
  .material-list { grid-template-columns: 1fr; }
  .industry-list article { grid-template-columns: 34px 1fr; }
  .industry-list p { grid-column: 2; }
  .process-flow, .capacity-grid { grid-template-columns: 1fr; }
  .process-flow li { min-height: 150px; }
  .quality-note { grid-template-columns: 1fr; gap: 1.3rem; padding: 1.6rem; }
  .timeline { grid-template-columns: 1fr; padding-left: 1rem; border-top: 0; border-left: 2px solid var(--blue); }
  .timeline div { padding: 0 0 1.5rem 1rem; }
  .timeline div::before { top: 0.3rem; left: -1.35rem; }
  .contact-card { padding: 1.5rem; }
  .dialog-shell { padding: 3.1rem 1.25rem 1.5rem; }
  .dialog-title-row { grid-template-columns: 1fr 76px; gap: 1rem; }
  .dialog-ring { width: 72px; height: 72px; border-width: 14px; }
  .dialog-specs { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}