@import url("/fonts.css");
:root {
  --ink: #102c39;
  --muted: #5b6c74;
  --line: #dce3e6;
  --paper: #f3f6f7;
  --lime: #c1f578;
  --teal: #14676d;
  --radius: 4px;
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background: #fff;
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a,
input,
textarea,
select {
  -webkit-tap-highlight-color: transparent;
}
a:focus-visible,
button:focus-visible {
  outline: 3px solid #468522;
  outline-offset: 5px;
}
img {
  max-width: 100%;
  height: auto;
}
button {
  cursor: pointer;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2,
h3 {
  line-height: 1.35;
  letter-spacing: -0.035em;
}
h1 {
  font-size: clamp(2.5rem, 4.8vw, 4.6rem);
  font-weight: 600;
}
h2 {
  font-size: clamp(1.8rem, 2.4vw, 2.5rem);
  font-weight: 600;
}
h3 {
  font-size: 1.2rem;
}
small {
  font-size: 0.8rem;
}
.shell {
  width: min(1320px, calc(100% - 100px));
  margin: auto;
}
.preview-banner {
  background: #d9eacb;
  text-align: center;
  padding: 6px 20px;
  font-size: 13px;
  color: #29402b;
}
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: 98px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand-symbol {
  font-size: 38px;
  font-weight: 900;
  letter-spacing: -6px;
  color: var(--teal);
  padding-right: 5px;
  line-height: 1;
}
.brand-symbol span {
  font-size: 12px;
  letter-spacing: 0;
  vertical-align: top;
}
.brand b {
  font-size: 23px;
  display: block;
  line-height: 1.35;
  letter-spacing: 4px;
}
.brand small {
  font-size: 10px;
  letter-spacing: 1.4px;
  display: block;
}
nav {
  display: flex;
  align-items: center;
  gap: 40px;
  font-size: 15px;
}
nav a[aria-current="page"]:not(.nav-contact) {
  color: var(--teal);
  position: relative;
}
nav a[aria-current="page"]:not(.nav-contact):after {
  content: "";
  position: absolute;
  bottom: -15px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--teal);
}
.nav-contact {
  border: 1px solid var(--line);
  padding: 12px 20px;
}
.nav-contact span {
  margin-left: 28px;
}
.menu-toggle {
  display: none;
}
.hero {
  background: var(--paper);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 54px;
  padding: 78px 0 66px;
  align-items: center;
}
.eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.eyebrow i {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--teal);
  margin-right: 10px;
}
.hero h1 {
  margin-bottom: 25px;
}
.hero-description {
  color: var(--muted);
  max-width: 470px;
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 27px;
  margin-top: 34px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 35px;
  min-height: 50px;
  background: var(--ink);
  color: white;
  padding: 13px 24px;
  border: 1px solid var(--ink);
  font-size: 15px;
  border-radius: 2px;
  font-weight: 500;
}
.button:hover {
  background: #235063;
}
.text-link {
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid #94a6ac;
  padding-bottom: 5px;
}
.hero-caption {
  font-size: 11px;
  letter-spacing: 1.1px;
  margin: 57px 0 0;
  color: #60727a;
}
.hero-caption span {
  margin-left: 23px;
  letter-spacing: 0;
  font-size: 12px;
}
.signal-panel {
  background: var(--ink);
  color: var(--lime);
  padding: 25px 27px;
  box-shadow: 20px 20px 0 #e1e8ea;
  position: relative;
}
.instrument-top,
.instrument-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  letter-spacing: 1.4px;
  font-size: 10px;
  color: #aec3c9;
}
.signal-grid {
  height: 210px;
  background-image:
    linear-gradient(#ffffff0c 1px, transparent 1px),
    linear-gradient(90deg, #ffffff0c 1px, transparent 1px);
  background-size: 30px 30px;
  position: relative;
  margin: 30px -3px 20px;
}
.signal-grid svg {
  width: 100%;
  height: 100%;
}
.signal-cross {
  position: absolute;
  right: 3px;
  top: -15px;
  font-size: 28px;
  font-weight: 100;
  color: #8fa5b0;
}
.signal-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  color: #eef4f5;
  padding: 10px 0 30px;
  border-bottom: 1px solid #42606b;
  margin-bottom: 15px;
}
.signal-title > span {
  font-size: 23px;
  line-height: 1.65;
}
.signal-title b {
  font-size: 12px;
  letter-spacing: 2px;
  line-height: 1.8;
  font-weight: 500;
  color: var(--lime);
}
.category-strip {
  border-bottom: 1px solid var(--line);
}
.category-strip > .shell {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.category-strip a {
  padding: 24px 24px 24px 0;
  display: flex;
  align-items: center;
  gap: 21px;
  border-right: 1px solid var(--line);
  margin-right: 24px;
}
.category-strip a:last-child {
  border: 0;
  margin-right: 0;
}
.category-strip strong {
  font-size: 17px;
  font-weight: 500;
}
.category-strip small {
  color: #7e9096;
  font-size: 11px;
}
.category-strip a > span {
  margin-left: auto;
  color: var(--teal);
}
.section {
  padding-top: 76px;
  padding-bottom: 82px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 34px;
}
.section-heading h2 {
  margin-bottom: 0;
}
.section-heading .eyebrow {
  color: var(--teal);
  margin-bottom: 13px;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}
.product-card {
  display: block;
  border: 1px solid var(--line);
  transition:
    transform 0.15s ease,
    border-color 0.15s;
}
.product-card:hover {
  transform: translateY(-3px);
  border-color: var(--teal);
}
.product-picture {
  aspect-ratio: 1.27;
  background: #eff3f5;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.product-picture img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 16px;
}
.product-placeholder {
  width: 82%;
  color: #78909b;
  padding: 17px;
  border: 1px solid #ced9df;
  display: flex;
  flex-direction: column;
  gap: 17px;
}
.product-placeholder > span {
  font-size: 10px;
  letter-spacing: 1px;
}
.product-placeholder > strong {
  font-size: 24px;
  font-weight: 500;
  color: #405e6e;
}
.product-copy {
  padding: 22px;
}
.product-copy .eyebrow {
  color: var(--teal);
  font-size: 11px;
  letter-spacing: 1px;
}
.product-copy h3 {
  margin: 9px 0 10px;
  font-size: 18px;
}
.product-copy p {
  font-size: 14px;
  color: var(--muted);
  min-height: 49px;
  margin-bottom: 20px;
}
.card-bottom {
  font-size: 12px;
  border-top: 1px solid var(--line);
  padding-top: 15px;
  display: flex;
  justify-content: space-between;
  gap: 15px;
}
.about-band {
  background: var(--ink);
  color: #edf4f6;
  padding: 67px 0;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 90px;
}
.about-grid .eyebrow {
  color: var(--lime);
}
.about-grid h2 {
  font-size: 34px;
  line-height: 1.55;
  margin: 0;
}
.about-grid > div > p:not(.eyebrow) {
  font-size: 16px;
  line-height: 2;
  color: #c0cfd4;
}
.about-grid .text-link {
  color: var(--lime);
}
.brand-list {
  margin-top: 35px;
  border-top: 1px solid #41606b;
  padding-top: 20px;
}
.brand-list p {
  margin: 10px 0 0;
}
.contact-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 65px;
  padding-bottom: 65px;
}
.contact-band .eyebrow {
  color: var(--teal);
  margin-bottom: 14px;
}
.contact-band h2 {
  margin: 0;
}
footer {
  background: #f3f6f7;
  padding: 55px 0 0;
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 45px;
}
.footer-wordmark {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1px;
  display: block;
  margin-bottom: 16px;
}
.footer-wordmark > span {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 4px;
  margin-left: 18px;
}
.footer-main p {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 5px;
}
.footer-main a {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-top: 10px;
}
.footer-main b {
  display: block;
  font-size: 14px;
  margin-bottom: 18px;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  font-size: 12px;
  color: var(--muted);
}
.page-intro {
  padding-top: 66px;
  padding-bottom: 35px;
}
.page-intro .eyebrow {
  color: var(--teal);
}
.page-intro h1 {
  font-size: 48px;
  line-height: 1.4;
  margin-bottom: 20px;
}
.page-intro > p:last-child {
  color: var(--muted);
}
.catalog {
  padding-top: 0;
}
.search-form {
  display: flex;
  border-bottom: 1px solid var(--line);
  padding-bottom: 25px;
  margin-bottom: 35px;
  gap: 12px;
}
.search-form input:not([type="hidden"]) {
  border: 1px solid var(--line);
  padding: 13px 18px;
  min-width: 0;
  flex: 1;
}
.catalog-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 42px;
}
.category-nav a {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 15px;
}
.category-nav a[aria-current="page"] {
  background: var(--ink);
  color: #fff;
}
.category-nav a span {
  opacity: 0.7;
}
.catalog-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.results-count {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 22px;
}
.empty {
  padding: 45px 25px;
  text-align: center;
  grid-column: 1/-1;
  background: var(--paper);
}
.empty p {
  color: var(--muted);
}
.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 40px;
}
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
}
.detail-grid h1 {
  font-size: 38px;
}
.detail-image {
  aspect-ratio: 1.15;
  background: var(--paper);
  display: grid;
  place-items: center;
}
.detail-image img {
  max-height: 460px;
  object-fit: contain;
  padding: 25px;
}
.detail-placeholder {
  text-align: center;
  color: #708791;
}
.detail-placeholder span {
  letter-spacing: 3px;
  font-size: 12px;
}
.detail-placeholder p {
  margin-top: 20px;
}
.model {
  font-size: 22px;
  color: var(--teal);
}
.lead {
  font-size: 18px;
  line-height: 1.9;
  color: var(--muted);
}
.detail-body {
  max-width: 900px;
  margin: 60px auto 0;
}
.detail-body h2 {
  font-size: 24px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 15px;
  margin-top: 35px;
}
.preserve-lines {
  white-space: pre-line;
  overflow-wrap: anywhere;
}
.specs {
  margin: 0;
}
.specs > div {
  display: grid;
  grid-template-columns: 1fr 2fr;
  padding: 15px;
  border-bottom: 1px solid var(--line);
  gap: 20px;
}
.specs > div:nth-child(odd) {
  background: var(--paper);
}
.specs dd {
  margin: 0;
}
.about-content {
  padding-top: 20px;
  padding-bottom: 80px;
  max-width: 950px;
}
.about-content h2 {
  font-size: 26px;
}
.about-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
  margin: 35px 0;
}
.about-facts > div {
  background: var(--paper);
  padding: 25px;
}
.about-facts span {
  font-size: 14px;
  color: var(--muted);
}
.about-facts h3 {
  margin: 12px 0 0;
}
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  padding: 15px 0 85px;
}
.contact-content h2 {
  font-size: 26px;
}
.contact-content p {
  color: var(--muted);
}
.contact-content dl {
  margin: 0;
}
.contact-content dl > div {
  border-top: 1px solid var(--line);
  padding: 20px 0;
}
.contact-content dt {
  font-size: 13px;
  color: var(--muted);
}
.contact-content dd {
  margin: 10px 0;
  font-size: 21px;
  overflow-wrap: anywhere;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
@media (min-width: 1500px) {
  .hero-grid {
    padding-top: 95px;
    padding-bottom: 85px;
  }
  .hero h1 {
    font-size: 76px;
  }
  .signal-grid {
    height: 240px;
  }
}
@media (max-width: 1100px) {
  .shell {
    width: calc(100% - 56px);
  }
  .hero-grid {
    gap: 30px;
  }
  .hero-caption span {
    display: block;
    margin: 5px 0 0;
  }
  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .catalog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .about-grid {
    gap: 40px;
  }
  .signal-title b {
    font-size: 10px;
  }
  .signal-title > span {
    font-size: 20px;
  }
}
@media (max-width: 700px) {
  .shell {
    width: calc(100% - 36px);
  }
  .header-inner {
    height: 80px;
    flex-wrap: wrap;
  }
  .brand b {
    font-size: 20px;
  }
  .brand small {
    font-size: 9px;
  }
  .brand-symbol {
    font-size: 32px;
  }
  .menu-toggle {
    display: block;
    border: 1px solid var(--line);
    background: white;
    padding: 8px 14px;
    font-size: 14px;
  }
  .site-header nav {
    display: none;
  }
  .menu-open .header-inner {
    height: auto;
    padding: 19px 0;
  }
  .menu-open nav {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 25px;
    padding-bottom: 10px;
  }
  .nav-contact {
    border: 0;
    padding: 0;
  }
  .nav-contact span {
    margin-left: 3px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    padding: 42px 0;
    gap: 32px;
  }
  .hero h1 {
    font-size: 43px;
  }
  .hero-caption {
    margin-top: 30px;
  }
  .hero-caption span {
    display: inline;
    margin-left: 12px;
  }
  .signal-panel {
    box-shadow: none;
    padding: 20px;
  }
  .signal-grid {
    height: 150px;
    margin-top: 20px;
  }
  .signal-title {
    padding-bottom: 15px;
  }
  .signal-title > span {
    font-size: 20px;
  }
  .hero-actions {
    gap: 20px;
  }
  .category-strip > .shell {
    grid-template-columns: repeat(2, 1fr);
  }
  .category-strip a {
    margin: 0;
    padding: 18px 10px;
    gap: 12px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .category-strip strong {
    font-size: 15px;
  }
  .section {
    padding-top: 48px;
    padding-bottom: 48px;
  }
  .section-heading {
    display: block;
  }
  .section-heading > a {
    display: inline-block;
    margin-top: 20px;
  }
  .product-grid {
    gap: 14px;
  }
  .product-copy {
    padding: 15px;
  }
  .product-copy h3 {
    font-size: 16px;
  }
  .product-copy p {
    font-size: 14px;
    min-height: 72px;
  }
  .product-placeholder {
    padding: 12px;
    gap: 8px;
  }
  .product-placeholder > strong {
    font-size: 19px;
  }
  .product-placeholder > span {
    font-size: 9px;
  }
  .about-band {
    padding: 45px 0;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .about-grid h2 {
    font-size: 29px;
  }
  .contact-band {
    gap: 22px;
    align-items: start;
    padding: 45px 0;
    flex-direction: column;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .footer-main > div:first-child {
    grid-column: 1/-1;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 5px;
  }
  .page-intro {
    padding-top: 40px;
  }
  .page-intro h1 {
    font-size: 36px;
  }
  .catalog {
    padding-top: 0;
  }
  .catalog-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .category-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .category-nav .eyebrow {
    width: 100%;
    margin-bottom: 5px;
  }
  .category-nav a {
    gap: 14px;
    padding: 8px 12px;
    border: 1px solid var(--line);
  }
  .detail-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .detail-grid h1 {
    font-size: 31px;
  }
  .detail-image {
    max-height: 350px;
  }
  .contact-content {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-bottom: 50px;
  }
  .about-facts {
    grid-template-columns: 1fr;
  }
  .specs > div {
    grid-template-columns: 1fr 1.6fr;
  }
  .preview-banner {
    font-size: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

.language-switch { white-space: nowrap; font-weight: 600; color: var(--teal); border-left: 1px solid var(--line); padding-left: 18px; }
.certificate-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 28px; }
.certificate-card { min-width: 0; border: 1px solid var(--line); padding: 22px; }
.certificate-card img { width: 100%; height: 310px; object-fit: contain; background: var(--paper); }
.certificate-card a span { display: block; color: var(--teal); margin: 12px 0 20px; }
.certificate-card p { overflow-wrap: anywhere; color: var(--muted); }
html[lang="en"] nav { gap: 20px; }
html[lang="en"] .brand b { letter-spacing: 0; font-size: 19px; }
html[lang="en"] h1 { font-size: clamp(2.1rem,4vw,3.8rem); }
html[lang="en"] .category-strip strong { font-size: 16px; overflow-wrap: anywhere; }
@media(max-width: 900px) { .certificate-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media(max-width: 600px) { .certificate-grid { grid-template-columns: 1fr; } .language-switch { border: 0; padding-left: 0; } }

.brand-logo { width: auto; max-width: 120px; height: 48px; object-fit: contain; flex-shrink: 0; }
@media(max-width: 600px) { .brand-logo { max-width: 80px; height: 36px; } }