:root {
  --ink: #17202a;
  --muted: #5d6873;
  --line: #d7e0e8;
  --blue: #1769aa;
  --blue-dark: #123f6a;
  --orange: #f28c28;
  --surface: #f4f7fa;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, "Malgun Gothic", sans-serif;
  line-height: 1.55;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 32px;
  border-bottom: 1px solid rgba(215, 224, 232, .9);
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  font-weight: 800;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #34424f;
  font-size: 14px;
  font-weight: 700;
}

.nav a {
  padding: 10px 12px;
  border-radius: 6px;
}

.nav a:hover {
  background: var(--surface);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr);
  gap: 48px;
  align-items: center;
  max-width: 1240px;
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  padding: 56px 32px 72px;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: 58px;
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 560px;
  margin-bottom: 30px;
  color: #3c4650;
  font-size: 18px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--blue);
  border-radius: 6px;
  font-weight: 800;
}

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

.button.secondary {
  color: var(--blue-dark);
  background: var(--white);
}

.hero-media {
  position: relative;
  min-height: 520px;
}

.tech-visual {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  border: 1px solid #c9d7e3;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(23, 105, 170, .08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(23, 105, 170, .08) 1px, transparent 1px),
    #f7fafc;
  background-size: 38px 38px;
  box-shadow: 0 22px 60px rgba(23, 32, 42, .14);
}

.sensor-head {
  position: absolute;
  top: 68px;
  left: 50%;
  display: grid;
  justify-items: center;
  gap: 14px;
  width: 210px;
  padding: 24px 20px;
  border: 1px solid #9bb6ce;
  border-radius: 8px;
  background: #ffffff;
  transform: translateX(-50%);
  box-shadow: 0 16px 32px rgba(23, 32, 42, .13);
}

.sensor-head span {
  width: 92px;
  height: 34px;
  border-radius: 4px;
  background: linear-gradient(90deg, #17202a 0 28%, #1769aa 28% 100%);
}

.sensor-head strong {
  color: var(--blue-dark);
  font-size: 15px;
}

.laser-line {
  position: absolute;
  top: 190px;
  left: 50%;
  width: 4px;
  height: 178px;
  background: linear-gradient(#f28c28, rgba(242, 140, 40, .12));
  transform: translateX(-50%);
}

.laser-line::before,
.laser-line::after {
  content: "";
  position: absolute;
  top: 0;
  width: 2px;
  height: 178px;
  background: rgba(242, 140, 40, .52);
}

.laser-line::before {
  left: -48px;
  transform: rotate(15deg);
  transform-origin: top;
}

.laser-line::after {
  right: -48px;
  transform: rotate(-15deg);
  transform-origin: top;
}

.workpiece {
  position: absolute;
  left: 50%;
  bottom: 74px;
  width: 360px;
  height: 92px;
  border: 1px solid #9aa8b4;
  border-radius: 8px;
  background: linear-gradient(135deg, #d9e0e6, #f8fbfd 48%, #ccd8e2);
  transform: translateX(-50%) skewX(-10deg);
}

.workpiece::after {
  content: "";
  position: absolute;
  top: 43px;
  left: 40px;
  right: 40px;
  height: 3px;
  background: #1769aa;
}

.workpiece span {
  position: absolute;
  top: 14px;
  left: 24px;
  color: #33404b;
  font-size: 13px;
  font-weight: 900;
}

.signal-card {
  position: absolute;
  display: grid;
  gap: 5px;
  width: 190px;
  padding: 16px;
  border: 1px solid #c9d7e3;
  border-radius: 8px;
  background: rgba(255, 255, 255, .95);
  box-shadow: 0 12px 28px rgba(23, 32, 42, .12);
}

.signal-card strong {
  color: var(--blue-dark);
  font-size: 15px;
}

.signal-card span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.card-a {
  left: 24px;
  top: 146px;
}

.card-b {
  right: 24px;
  top: 186px;
}

.card-c {
  left: 42px;
  bottom: 48px;
}

.section {
  max-width: 1240px;
  margin: 0 auto;
  padding: 72px 32px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  padding-top: 0;
}

.stats div {
  min-height: 118px;
  padding: 24px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.stats strong,
.stats span {
  display: block;
}

.stats strong {
  margin-bottom: 8px;
  font-size: 22px;
}

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

.section-heading {
  margin-bottom: 28px;
}

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

.product-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--surface);
}

.product-card h3,
.product-card p {
  padding: 0 20px;
}

.product-card h3 {
  margin-top: 20px;
}

.product-card p {
  margin-bottom: 22px;
  color: #4b5660;
}

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

.system-card {
  display: grid;
  align-content: start;
  min-height: 360px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.system-card > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 20px;
  border-radius: 6px;
  color: var(--white);
  background: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.system-card h3 {
  color: var(--blue-dark);
}

.system-card p {
  color: #4b5660;
}

.system-card ul {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding-left: 18px;
  color: #33404b;
  font-weight: 700;
}

.system-card em {
  align-self: end;
  margin-top: 22px;
  color: var(--blue);
  font-style: normal;
  font-weight: 900;
}

.system-card:hover {
  border-color: var(--blue);
  box-shadow: 0 14px 32px rgba(23, 32, 42, .12);
  transform: translateY(-2px);
}

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

.catalog-list {
  display: grid;
  gap: 18px;
}

.catalog-item {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(360px, 1.15fr);
  gap: 28px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  scroll-margin-top: 92px;
}

.catalog-item h3 {
  color: var(--blue-dark);
  font-size: 26px;
}

.catalog-item p {
  color: #4b5660;
}

.catalog-item dl {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.catalog-item dt,
.catalog-item dd {
  margin: 0;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.catalog-item dt {
  background: var(--surface);
  color: var(--blue-dark);
  font-weight: 900;
}

.catalog-item dd {
  color: #33404b;
}

.catalog-item dt:nth-last-of-type(1),
.catalog-item dd:nth-last-of-type(1) {
  border-bottom: 0;
}

.catalog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  grid-column: 1 / -1;
}

.catalog-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--blue);
  border-radius: 6px;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 900;
}

.catalog-actions a:hover {
  color: var(--white);
  background: var(--blue);
}

.product-lines {
  border-top: 1px solid var(--line);
}

.spec-section {
  background: var(--surface);
}

.spec-table,
.line-table {
  display: grid;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--white);
}

.spec-table div,
.line-table div {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  border-bottom: 1px solid var(--line);
}

.spec-table div:last-child,
.line-table div:last-child {
  border-bottom: 0;
}

.spec-table strong,
.spec-table span,
.line-table strong,
.line-table span {
  padding: 18px 20px;
}

.spec-table strong,
.line-table strong {
  background: var(--surface);
  color: var(--blue-dark);
}

.spec-table span,
.line-table span {
  color: #4b5660;
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, .7fr);
  gap: 42px;
  align-items: start;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature p {
  max-width: 680px;
  color: #4b5660;
}

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

.check-list li {
  padding: 15px 16px;
  border-left: 4px solid var(--orange);
  background: var(--surface);
  font-weight: 700;
}

.videos {
  border-bottom: 1px solid var(--line);
}

.videos .section-heading p:last-child {
  max-width: 720px;
  margin: 12px 0 0;
  color: #4b5660;
}

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

.video-card {
  display: grid;
  min-height: 172px;
  align-content: space-between;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.video-card strong {
  color: var(--blue-dark);
  font-size: 20px;
}

.video-card span {
  color: #4b5660;
}

.process {
  max-width: none;
  background: #eef3f7;
}

.process .section-heading,
.steps {
  max-width: 1176px;
  margin-left: auto;
  margin-right: auto;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.steps div {
  min-height: 198px;
  padding: 24px;
  border: 1px solid #cfd9e2;
  border-radius: 8px;
  background: var(--white);
}

.steps span {
  display: block;
  margin-bottom: 26px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
}

.steps p {
  color: #4f5a64;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, .65fr);
  gap: 34px;
  align-items: start;
}

.contact-copy p {
  max-width: 560px;
  color: #4f5a64;
}

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

.qr-panel div {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.qr-panel img {
  width: 132px;
  height: 132px;
  object-fit: contain;
}

.qr-panel span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.contact-card {
  display: grid;
  gap: 12px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.contact-card strong {
  color: var(--blue-dark);
  font-size: 24px;
}

.contact-card span {
  color: #3c4650;
  font-weight: 800;
}

.contact-card a {
  color: var(--blue-dark);
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 32px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 18px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: 42px 20px 54px;
  }

  h1 {
    font-size: 44px;
  }

  .hero-media {
    min-height: 0;
  }

  .tech-visual {
    min-height: 460px;
  }

  .stats,
  .product-grid,
  .system-grid,
  .catalog-item,
  .feature,
  .video-grid,
  .steps,
  .contact,
  .spec-table div,
  .line-table div {
    grid-template-columns: 1fr;
  }

  .spec-table strong,
  .spec-table span,
  .line-table strong,
  .line-table span {
    padding: 14px 16px;
  }

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

  .catalog-item dt {
    border-bottom: 0;
  }

  .catalog-actions a {
    width: 100%;
    justify-content: center;
  }

  .section {
    padding: 54px 20px;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 14px 18px;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 28px;
  }

  .lead {
    font-size: 16px;
  }

  .button {
    width: 100%;
  }

  .tech-visual {
    min-height: 500px;
  }

  .signal-card {
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
    width: auto;
    margin: 12px 18px;
  }

  .sensor-head {
    top: 34px;
  }

  .laser-line {
    top: 156px;
    height: 120px;
  }

  .workpiece {
    bottom: 156px;
    width: 250px;
  }

  .qr-panel {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: grid;
  }
}