:root {
  color-scheme: light;
  --ink: #101722;
  --muted: #5f6f83;
  --soft: #f4f7fb;
  --panel: #ffffff;
  --line: #dbe4ee;
  --brand: #1558b0;
  --brand-2: #1c6b5a;
  --accent: #c9792b;
  --dark: #0b121d;
  --dark-2: #152131;
  --shadow: 0 20px 50px rgba(14, 24, 38, .12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
}

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

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

:focus-visible {
  outline: 3px solid rgba(21, 88, 176, .35);
  outline-offset: 3px;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(219, 228, 238, .9);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 22px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 188px;
  font-weight: 800;
  color: var(--dark);
}

.brand-link img {
  width: 96px;
  height: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #263445;
  font-size: 15px;
  font-weight: 700;
}

.site-nav a {
  position: relative;
  padding: 25px 0;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 18px;
  left: 0;
  height: 2px;
  background: var(--brand);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .18s ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.language-mark:hover {
  border-color: var(--line);
  background: #fff;
  color: var(--brand);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 800;
  line-height: 1.2;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

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

.button-primary {
  background: var(--brand);
  color: #fff;
}

.button-secondary {
  border-color: rgba(255,255,255,.34);
  background: rgba(255,255,255,.08);
  color: #fff;
}

.button-light {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.button-green {
  background: var(--brand-2);
  color: #fff;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 680px;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(11, 18, 29, .97) 0%, rgba(11, 18, 29, .82) 44%, rgba(11, 18, 29, .2) 100%),
    url("../img/hero-factory.jpg") center/cover;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(310px, .64fr);
  gap: 44px;
  align-items: end;
  min-height: 680px;
  padding: 88px 0 46px;
}

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

.eyebrow {
  margin: 0 0 14px;
  color: #8ab8ff;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 78px);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero p {
  max-width: 620px;
  margin: 22px 0 0;
  color: rgba(255,255,255,.78);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-panel {
  padding: 18px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius);
  background: rgba(13, 24, 39, .72);
  box-shadow: 0 24px 60px rgba(0,0,0,.22);
  backdrop-filter: blur(16px);
}

.hero-panel h2 {
  margin: 0 0 14px;
  font-size: 18px;
  line-height: 1.35;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.metric {
  min-height: 86px;
  padding: 14px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  background: rgba(255,255,255,.06);
}

.metric strong {
  display: block;
  color: #fff;
  font-size: 28px;
  line-height: 1;
}

.metric span {
  display: block;
  margin-top: 8px;
  color: rgba(255,255,255,.68);
  font-size: 13px;
}

.section {
  padding: 86px 0;
}

.section-soft {
  background: var(--soft);
}

.section-dark {
  background: var(--dark);
  color: #fff;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 34px;
}

.section-title {
  max-width: 760px;
}

.kicker {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.section-dark .kicker {
  color: #8ab8ff;
}

h2,
h3,
p {
  letter-spacing: 0;
}

.section-title h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.14;
}

.section-title p,
.lead {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.section-dark .section-title p,
.section-dark .lead {
  color: rgba(255,255,255,.72);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.capability-card,
.product-card,
.info-card,
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.capability-card {
  padding: 22px;
}

.capability-card .number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: #e8f0fb;
  color: var(--brand);
  font-weight: 900;
}

.capability-card h3,
.info-card h3,
.contact-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.capability-card p,
.info-card p,
.contact-card p {
  margin: 0;
  color: var(--muted);
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, .82fr);
  gap: 34px;
  align-items: center;
}

.image-stack {
  display: grid;
  grid-template-columns: .9fr 1fr;
  gap: 14px;
}

.image-stack img {
  width: 100%;
  height: 260px;
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow);
}

.image-stack img:first-child {
  height: 360px;
  grid-row: span 2;
}

.feature-list {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: #334155;
}

.feature-list li::before {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  overflow: hidden;
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #eef3f8;
}

.product-body {
  padding: 18px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: #eef5f3;
  color: var(--brand-2);
  font-size: 12px;
  font-weight: 900;
}

.product-body h3 {
  margin: 12px 0 8px;
  font-size: 21px;
}

.product-body p {
  margin: 0 0 14px;
  color: var(--muted);
}

.text-link {
  color: var(--brand);
  font-weight: 900;
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr;
  gap: 14px;
}

.gallery-grid img {
  width: 100%;
  height: 250px;
  border-radius: var(--radius);
  object-fit: cover;
}

.gallery-grid img:first-child {
  height: 514px;
  grid-row: span 2;
}

.quality-band {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr);
  gap: 24px;
  align-items: stretch;
}

.quality-panel {
  padding: 32px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
}

.quality-panel h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
}

.quality-panel p {
  color: rgba(255,255,255,.74);
}

.market-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.market-list span {
  padding: 14px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.82);
  font-weight: 800;
}

.cta-band {
  padding: 34px;
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgba(21,88,176,.96), rgba(28,107,90,.9)),
    url("../img/workshop-2.jpg") center/cover;
  color: #fff;
}

.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.cta-band h2 {
  margin: 0;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.18;
}

.cta-band p {
  margin: 10px 0 0;
  color: rgba(255,255,255,.78);
}

.page-hero {
  padding: 88px 0 64px;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(11, 18, 29, .96), rgba(11, 18, 29, .72)),
    url("../img/workshop-1.jpg") center/cover;
}

.page-hero h1 {
  font-size: clamp(40px, 6vw, 68px);
}

.page-hero p {
  max-width: 720px;
  color: rgba(255,255,255,.78);
  font-size: 18px;
}

.breadcrumb {
  margin-bottom: 18px;
  color: rgba(255,255,255,.66);
  font-size: 13px;
  font-weight: 800;
}

.story-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr);
  gap: 34px;
  align-items: start;
}

.info-card,
.contact-card {
  padding: 24px;
}

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

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.timeline-item strong {
  color: var(--brand);
  font-size: 22px;
}

.timeline-item p {
  margin: 0;
  color: var(--muted);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.filter-button {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #334155;
  cursor: pointer;
  font-weight: 800;
}

.filter-button.is-active {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
}

.contact-list {
  display: grid;
  gap: 14px;
}

.contact-row {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.contact-row strong {
  display: block;
  margin-bottom: 4px;
}

.contact-row span {
  color: var(--muted);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 7px;
}

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

.field label {
  color: #334155;
  font-size: 14px;
  font-weight: 800;
}

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

.field textarea {
  min-height: 130px;
  resize: vertical;
}

.form-message {
  margin: 14px 0 0;
  color: var(--brand-2);
  font-weight: 800;
}

.map-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.map-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.site-footer {
  background: #08111c;
  color: #fff;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr .9fr;
  gap: 30px;
  padding: 52px 0;
}

.footer-logo {
  width: 112px;
  margin-bottom: 16px;
  filter: brightness(1.2);
}

.footer-main h2,
.footer-main h3 {
  margin: 0 0 14px;
  font-size: 18px;
}

.footer-main p,
.footer-main a {
  color: rgba(255,255,255,.68);
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-bottom {
  padding: 18px 0;
  border-top: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.58);
  font-size: 13px;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
}

.footer-legal a {
  color: rgba(255,255,255,.72);
}

.footer-legal a:hover {
  color: #fff;
}

.footer-divider {
  color: rgba(255,255,255,.32);
}

[hidden] {
  display: none !important;
}

@media (max-width: 980px) {
  .header-inner {
    min-height: 66px;
  }

  .site-nav {
    position: absolute;
    top: 66px;
    right: 20px;
    left: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 13px 12px;
  }

  .site-nav a::after {
    display: none;
  }

  .nav-toggle {
    display: inline-block;
  }

  .hero,
  .hero .container {
    min-height: 620px;
  }

  .hero .container,
  .split-layout,
  .quality-band,
  .story-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    max-width: 520px;
  }

  .capability-grid,
  .product-grid,
  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }

  .gallery-grid img:first-child {
    height: 300px;
    grid-column: 1 / -1;
    grid-row: auto;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .header-actions .button {
    display: none;
  }

  .brand-text {
    display: none;
  }

  .brand-link {
    min-width: auto;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 40px;
  }

  .hero p,
  .page-hero p {
    font-size: 16px;
  }

  .section {
    padding: 58px 0;
  }

  .section-head,
  .cta-band-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .metric-grid,
  .capability-grid,
  .product-grid,
  .info-grid,
  .market-list,
  .footer-main,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .image-stack,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .image-stack img,
  .image-stack img:first-child,
  .gallery-grid img {
    height: 240px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .cta-band {
    padding: 24px;
  }

  .footer-legal {
    gap: 6px 10px;
  }

  .footer-divider {
    display: none;
  }
}