:root {
  --black: #101318;
  --ink: #16191f;
  --muted: #687180;
  --line: #d8dde5;
  --paper: #f3f5f7;
  --white: #ffffff;
  --red: #d5001f;
  --blue: #0b5a8a;
  --metal: #e8ebef;
  --metal-dark: #c7ced7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, "Noto Sans SC", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  line-height: 1.55;
}

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

img,
video {
  display: block;
  width: 100%;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  min-height: 82px;
  padding: 10px clamp(18px, 4vw, 56px);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(190, 198, 208, 0.65);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  gap: 14px;
  align-items: center;
  min-width: 0;
}

.brand img {
  width: 174px;
  height: 52px;
  object-fit: contain;
  background: var(--white);
  padding: 5px 8px;
}

.brand span {
  color: #29313c;
  font-size: 16px;
  font-weight: 900;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 2vw, 30px);
  color: #2b333f;
  font-size: 14px;
  font-weight: 800;
}

.main-nav a:hover {
  color: var(--red);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-button {
  border: 1px solid rgba(25, 31, 40, 0.18);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--ink);
  background: transparent;
  font: inherit;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
}

.lang-button.active {
  color: var(--white);
  background: var(--red);
  border-color: var(--red);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.88), rgba(231, 235, 240, 0.22) 36%, transparent 58%),
    linear-gradient(135deg, #f5f7f9, #cdd4de 48%, #f3f5f7);
}

.hero-media,
.hero-media::after,
.hero-media img {
  position: absolute;
  inset: 0;
}

.hero-media img {
  height: 100%;
  object-fit: cover;
  object-position: center center;
  opacity: 0.92;
}

.hero-media::after {
  content: "";
  background:
    linear-gradient(90deg, rgba(14, 17, 22, 0.86) 0%, rgba(20, 24, 30, 0.52) 38%, rgba(255, 255, 255, 0.02) 80%),
    linear-gradient(0deg, rgba(15, 19, 25, 0.44), rgba(255, 255, 255, 0.04) 52%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(780px, calc(100% - 36px));
  margin-left: clamp(18px, 7vw, 96px);
  padding-top: 84px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
  white-space: nowrap;
}

.hero .eyebrow {
  color: #ffb4b9;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(46px, 8vw, 100px);
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.2;
}

.hero-copy {
  max-width: 690px;
  margin-bottom: 24px;
  color: #e8edf3;
  font-size: clamp(18px, 2vw, 22px);
}

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

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 6px;
  font-weight: 900;
}

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

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.48);
}

.section,
.section-band,
.split-section,
.contact-section,
.field-section {
  padding: clamp(24px, 3.5vw, 46px) clamp(18px, 5vw, 72px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: clamp(30px, 6vw, 84px);
  align-items: start;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.96), rgba(230, 234, 239, 0.92)),
    repeating-linear-gradient(90deg, rgba(180, 188, 198, 0.12) 0 1px, transparent 1px 80px);
}

.intro-copy {
  max-width: 920px;
}

.profile-body {
  display: grid;
  gap: 12px;
  padding-left: 18px;
  border-left: 4px solid var(--red);
}

.profile-body p,
.section-heading p,
.split-section p,
.contact-section p,
.product-card p,
.highlight-grid p,
.equipment-grid p {
  color: var(--muted);
  font-size: 17px;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(88px, 7vw, 116px);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.stat-grid div {
  position: relative;
  min-height: 116px;
  padding: 22px;
  background: #fafbfc;
  border-bottom: 1px solid var(--line);
}

.stat-grid div:last-child {
  border-bottom: 0;
}

.stat-grid div::before,
.product-card::before,
.download-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--red), #f15f5f);
}

.stat-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 28px;
  line-height: 1;
}

.stat-grid span {
  color: var(--muted);
  font-weight: 900;
}

.section {
  max-width: none;
  margin: 0 auto;
}

.section-heading {
  max-width: 960px;
  margin-bottom: 22px;
}

.factory-section .section-heading {
  width: 100%;
  max-width: none;
}

.factory-section h2 {
  max-width: 1180px;
}

.field-section .section-heading {
  width: 100%;
  max-width: none;
}

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

.product-card,
.download-card,
.contact-form,
.highlight-grid article,
.equipment-grid article {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 45px rgba(18, 28, 45, 0.06);
}

.product-card {
  display: grid;
  grid-template-rows: 260px auto;
  min-height: 460px;
  overflow: hidden;
}

.product-card img {
  height: 100%;
  object-fit: cover;
  background: linear-gradient(135deg, #f5f7f9, #d7dde5);
}

.product-card div {
  padding: 24px;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: clamp(30px, 6vw, 84px);
  align-items: center;
  color: var(--ink);
  background:
    linear-gradient(135deg, #f7f8fa, #dfe4ea 55%, #f7f8fa),
    repeating-linear-gradient(90deg, rgba(110, 120, 135, 0.12) 0 1px, transparent 1px 90px);
}

.split-section p {
  color: var(--muted);
}

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

.solution-list span {
  padding: 16px;
  border: 1px solid rgba(160, 170, 184, 0.45);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: inset 4px 0 0 var(--red);
  font-weight: 900;
}

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

.highlight-grid article {
  min-height: 240px;
  padding: 28px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(225, 230, 237, 0.84)),
    radial-gradient(circle at 80% 12%, rgba(255, 255, 255, 0.95), transparent 26%);
}

.highlight-grid span {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
  color: var(--white);
  background: var(--red);
  border-radius: 6px;
  font-weight: 900;
}

.equipment-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.equipment-grid article {
  overflow: hidden;
}

.equipment-grid img {
  height: 210px;
  object-fit: cover;
}

.equipment-grid h3 {
  padding: 18px 18px 8px;
  margin: 0;
  border-top: 4px solid var(--red);
}

.equipment-grid p {
  min-height: 92px;
  margin: 0;
  padding: 0 18px 20px;
  font-size: 15px;
  line-height: 1.65;
}

.process-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.process-strip span {
  display: grid;
  min-height: 74px;
  place-items: center;
  padding: 12px;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(230, 235, 242, 0.84)),
    linear-gradient(90deg, rgba(213, 0, 31, 0.16), transparent);
  border: 1px solid var(--line);
  border-radius: 8px;
  text-align: center;
  font-size: 14px;
  font-weight: 900;
}

.field-section {
  max-width: none;
  background: linear-gradient(180deg, #ffffff, #edf1f5);
}

.field-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 0.85fr);
  gap: 14px;
  align-items: stretch;
}

.field-layout video {
  height: 330px;
  min-height: 0;
  object-fit: cover;
  border-radius: 6px;
  background: #111;
}

.field-gallery {
  display: grid;
  grid-template-rows: repeat(3, 1fr);
  gap: 8px;
  height: 330px;
}

.field-gallery figure {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 4px;
  min-height: 0;
  margin: 0;
}

.field-gallery img {
  height: 100%;
  min-height: 0;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.field-gallery figcaption {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.2;
  white-space: nowrap;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.download-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  min-height: 120px;
  padding: 24px;
}

.download-card strong {
  font-size: 20px;
}

.download-card span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  color: var(--white);
  background: var(--red);
  border-radius: 6px;
  font-weight: 900;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 520px);
  gap: clamp(24px, 4vw, 56px);
  align-items: stretch;
  background: linear-gradient(120deg, #ffffff, #e8edf3);
}

.contact-section > div {
  max-width: 680px;
}

.contact-section h2,
.page-contact h1 {
  max-width: 760px;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.18;
}

.wechat-card {
  display: inline-grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  margin-top: 24px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.8);
}

.wechat-card img {
  width: 116px;
  height: 116px;
  object-fit: cover;
  border-radius: 6px;
}

.wechat-card span {
  color: var(--ink);
  font-weight: 900;
}

.lang-en .zh-only,
.lang-ko .zh-only {
  display: none;
}

.contact-form {
  display: grid;
  gap: 10px;
  align-self: end;
  padding: 16px;
}

.contact-form label {
  display: grid;
  gap: 5px;
  color: #3a414d;
  font-weight: 500;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  font: inherit;
  font-weight: 400;
}

.contact-form textarea {
  min-height: 76px;
  resize: vertical;
}

.contact-form button {
  min-height: 40px;
  border: 0;
  border-radius: 6px;
  color: var(--white);
  background: var(--red);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr;
  padding: 22px clamp(18px, 5vw, 72px);
  color: var(--ink);
  background:
    linear-gradient(135deg, #ffffff, #edf1f6 46%, #dfe5ec),
    repeating-linear-gradient(90deg, rgba(120, 130, 144, 0.1) 0 1px, transparent 1px 84px);
  border-top: 1px solid var(--line);
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer span {
  color: var(--muted);
}

.site-footer a {
  color: var(--ink);
  font-weight: 900;
}

.footer-brand {
  display: grid;
  align-content: center;
  gap: 8px;
  padding-left: 18px;
  border-left: 5px solid var(--red);
}

.subpage {
  padding-top: 82px;
}

.page-hero,
.page-section {
  padding: clamp(32px, 4vw, 58px) clamp(18px, 5vw, 72px);
}

.page-hero {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(224, 230, 238, 0.9)),
    repeating-linear-gradient(90deg, rgba(150, 160, 174, 0.12) 0 1px, transparent 1px 86px);
}

.page-hero h1 {
  max-width: 1180px;
  margin-bottom: 18px;
  color: var(--ink);
  font-size: clamp(20px, 2.1vw, 28px);
  line-height: 1.18;
}

.page-hero p:last-child {
  max-width: 900px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 19px;
}

.detail-grid {
  display: grid;
  gap: 16px;
}

.detail-card,
.two-column-panel {
  display: grid;
  grid-template-columns: minmax(280px, 0.45fr) minmax(0, 0.55fr);
  gap: clamp(20px, 4vw, 48px);
  align-items: center;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 45px rgba(18, 28, 45, 0.06);
}

.detail-card img,
.two-column-panel img {
  height: 280px;
  object-fit: cover;
  border-radius: 6px;
  background: #e5eaf0;
}

.detail-card h2,
.two-column-panel h2 {
  font-size: clamp(24px, 2.4vw, 32px);
}

.text-link {
  display: inline-flex;
  margin-top: 8px;
  color: var(--red);
  font-weight: 900;
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(260px, 0.5fr) minmax(0, 1fr);
  gap: 20px;
  align-items: center;
  background: linear-gradient(135deg, #ffffff, #e8edf3);
}

.compact-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.compact-list span {
  min-height: 64px;
  display: grid;
  place-items: center;
  padding: 10px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 8px;
  text-align: center;
  font-weight: 900;
}

.wide-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.page-contact {
  padding-top: clamp(48px, 6vw, 90px);
}


@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .main-nav {
    display: none;
  }

  .intro,
  .split-section,
  .field-layout,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .stat-grid {
    margin-top: 0;
  }

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

  .process-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-card,
  .two-column-panel,
  .feature-band {
    grid-template-columns: 1fr;
  }

  .compact-list,
  .wide-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 780px) {
  .site-header {
    min-height: 74px;
    gap: 12px;
    padding: 10px 14px;
  }

  .brand img {
    width: 132px;
    height: 40px;
  }

  .brand span {
    display: none;
  }

  .header-actions {
    gap: 4px;
  }

  .lang-button {
    padding: 7px 8px;
    font-size: 11px;
  }

  .hero {
    min-height: 86vh;
  }

  .hero-content {
    width: calc(100% - 28px);
    margin-left: 14px;
  }

  h1 {
    font-size: clamp(42px, 14vw, 64px);
  }

  h2 {
    font-size: 26px;
  }

  .stat-grid,
  .product-grid,
  .solution-list,
  .highlight-grid,
  .equipment-grid,
  .download-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    grid-template-rows: 220px auto;
  }

  .field-layout video {
    height: 260px;
  }

  .field-gallery {
    height: auto;
  }

  .field-gallery figure {
    min-height: 124px;
  }

  .field-gallery img {
    height: 96px;
  }

  .site-footer {
    display: grid;
    grid-template-columns: 1fr;
  }

  .process-strip {
    grid-template-columns: 1fr;
  }

  .subpage {
    padding-top: 74px;
  }

  .page-hero h1 {
    font-size: 24px;
  }

  .detail-card img,
  .two-column-panel img {
    height: 220px;
  }

  .compact-list,
  .wide-list {
    grid-template-columns: 1fr;
  }
}