:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #132235;
  --muted: #5f6f82;
  --line: #d9e1ea;
  --blue: #0f5fbd;
  --blue-dark: #0b3f84;
  --copper: #b8662d;
  --shadow: 0 18px 55px rgba(20, 40, 70, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Noto Sans KR", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 74px;
  padding: 0 clamp(18px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 240px;
}

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  color: #fff;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  border-radius: 8px;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
}

.nav {
  display: flex;
  gap: 24px;
  margin-left: auto;
  color: #314258;
  font-size: 14px;
  font-weight: 700;
}

.lang-btn {
  min-width: 72px;
  min-height: 38px;
  padding: 0 15px;
  color: var(--blue-dark);
  font-weight: 800;
  background: #edf4ff;
  border: 1px solid #c9dbf4;
  border-radius: 8px;
  cursor: pointer;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(460px, 1fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  min-height: min(720px, calc(100vh - 74px));
  padding: clamp(36px, 5vw, 68px) clamp(18px, 5vw, 72px);
  background: linear-gradient(90deg, #f8fbff 0%, #f3f7fc 48%, #e8eef6 100%);
}

.hero-copy {
  max-width: 680px;
  min-width: 0;
}

.hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(36px, 4.8vw, 62px);
  line-height: 1.06;
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.hero p {
  max-width: 590px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 800;
  border-radius: 8px;
  border: 1px solid transparent;
}

.btn.primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 12px 28px rgba(15, 95, 189, 0.25);
}

.btn.secondary {
  color: var(--blue-dark);
  background: #fff;
  border-color: var(--line);
}

.hero-media {
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-media img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.trust-strip div {
  padding: 24px clamp(18px, 5vw, 72px);
  background: #fff;
}

.trust-strip strong,
.trust-strip span {
  display: block;
}

.trust-strip span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: clamp(56px, 8vw, 108px) clamp(18px, 5vw, 72px);
}

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-head.row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  max-width: none;
  gap: 24px;
}

h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.14;
}

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

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

.product-grid article,
.article-list article {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.product-grid h3,
.article-list h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.3;
}

.product-grid p,
.article-list p {
  margin: 0;
}

.capability {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: clamp(28px, 5vw, 72px);
  background: #102033;
  color: #fff;
}

.capability p,
.capability .check-list {
  color: #c7d4e5;
}

.check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: 16px 0 16px 34px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  position: relative;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 23px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--copper);
}

.blog {
  background: #fff;
}

.text-link {
  color: var(--blue);
  font-weight: 800;
  white-space: nowrap;
}

.article-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.article-list time {
  display: block;
  color: var(--copper);
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 8px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(340px, 0.7fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 12px;
}

input,
textarea {
  width: 100%;
  padding: 14px 16px;
  color: var(--ink);
  font: inherit;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

textarea {
  resize: vertical;
}

.footer {
  padding: 26px clamp(18px, 5vw, 72px);
  color: #d9e5f6;
  background: #0b1624;
}

.footer p {
  margin: 0;
}

@media (max-width: 900px) {
  .site-header {
    flex-wrap: wrap;
    gap: 14px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .brand {
    min-width: 0;
    flex: 1;
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    gap: 18px;
  }

  .hero,
  .capability,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-media {
    order: -1;
  }

  .trust-strip,
  .product-grid,
  .article-list {
    grid-template-columns: 1fr;
  }

  .section-head.row {
    display: block;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    max-width: 100%;
    font-size: 28px;
    line-height: 1.16;
    white-space: normal;
    word-break: break-all;
    overflow-wrap: break-word;
  }

  .btn {
    width: 100%;
  }
}