*, *::before, *::after { box-sizing: border-box; }
:root {
  --kd-blue: #004090;
  --kd-blue-2: #0a5fb8;
  --kd-navy: #071a2f;
  --kd-navy-2: #0d2c4d;
  --kd-red: #e02020;
  --kd-ink: #132338;
  --kd-muted: #5f6f82;
  --kd-line: #c8d7e7;
  --kd-soft: #f1f7fc;
  --kd-page: #f8fbfe;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  font-family: "Noto Sans", "Noto Sans SC", system-ui, sans-serif;
  color: var(--kd-ink);
  background: var(--kd-page);
}
img {
  width: 100%;
  height: auto;
  display: block;
}
a { color: inherit; }
.site-shell {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}
.nav {
  background: #061b31;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.nav-grid {
  min-height: 82px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: clamp(.9rem, 2vw, 2rem);
  align-items: center;
}
.brand-mark img {
  max-width: clamp(8rem, 14vw, 12rem);
  background: #fff;
  padding: .35rem;
}
.nav-links {
  display: flex;
  justify-content: center;
  gap: clamp(1rem, 2.4vw, 2.25rem);
  font-size: clamp(.78rem, .85vw, .92rem);
  font-weight: 800;
}
.nav-links a,
.lang-toggle,
.btn {
  text-decoration: none;
}
.lang-toggle {
  display: inline-flex;
  gap: .35rem;
  align-items: center;
  border: 0;
  background: transparent;
  color: #fff;
  font-weight: 900;
  cursor: pointer;
  min-height: 44px;
}
.lang-toggle span { opacity: .58; }
.lang-toggle span.active { opacity: 1; }
.btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  border: 1px solid transparent;
  padding: .78rem 1.05rem;
  font-weight: 900;
  font-size: clamp(.8rem, .9vw, .94rem);
}
.btn-red { background: var(--kd-red); color: #fff; }
.btn-blue { background: var(--kd-blue); color: #fff; }
.btn-line { border-color: var(--kd-line); color: var(--kd-blue); background: #fff; }
.hero {
  background:
    linear-gradient(90deg, rgba(5,20,38,.98) 0%, rgba(5,20,38,.9) 42%, rgba(5,20,38,.16) 72%, rgba(5,20,38,0) 100%),
    var(--hero-image);
  background-size: cover;
  background-position: center;
  color: #fff;
}
.hero-inner {
  min-height: clamp(480px, 62vh, 640px);
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(3.5rem, 8vw, 6rem) clamp(1rem, 4vw, 2.5rem);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: #9fd0ff;
  font-weight: 900;
  font-size: clamp(.75rem, .82vw, .9rem);
  letter-spacing: 0;
}
h1,
.section-title {
  margin: 0;
  font-weight: 900;
  letter-spacing: 0;
  line-height: .98;
}
h1 {
  margin-top: .85rem;
  max-width: 12ch;
  font-size: clamp(2.4rem, 5.2vw, 5.35rem);
}
.hero-copy {
  max-width: 42rem;
  margin: 1.2rem 0 0;
  color: rgba(255,255,255,.84);
  font-size: clamp(1rem, 1.25vw, 1.22rem);
  line-height: 1.48;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.5rem;
}
.hero-card {
  align-self: end;
  background: rgba(245,250,255,.9);
  border: 1px solid rgba(255,255,255,.55);
  padding: clamp(1rem, 2vw, 1.4rem);
  color: var(--kd-ink);
}
.hero-card img {
  aspect-ratio: 1.45 / 1;
  object-fit: cover;
}
.hero-card p {
  margin: .85rem 0 0;
  color: var(--kd-muted);
  line-height: 1.45;
  font-size: clamp(.86rem, .95vw, .98rem);
}
.section-pad { padding: clamp(3rem, 7vw, 5.25rem) 0; }
.soft-section {
  background: linear-gradient(90deg, #f8fbfe 0%, #eef7fc 50%, #f8fbfe 100%);
}
.section-head {
  display: grid;
  grid-template-columns: minmax(0, .75fr) minmax(0, 1fr);
  gap: clamp(1.2rem, 4vw, 3rem);
  align-items: end;
  margin-bottom: clamp(1.2rem, 3vw, 2.2rem);
}
.section-title {
  color: #123e70;
  font-size: clamp(1.85rem, 3.2vw, 3.4rem);
}
.rule-red {
  width: 3.2rem;
  height: 3px;
  background: var(--kd-red);
  margin-top: .85rem;
}
.body-copy {
  margin: 0;
  color: var(--kd-muted);
  font-size: clamp(.96rem, 1vw, 1.06rem);
  line-height: 1.62;
  max-width: 66ch;
}
.spec-grid {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: clamp(1rem, 2.4vw, 1.8rem);
  align-items: start;
}
.data-panel {
  background: #062f55;
  color: #fff;
  padding: clamp(1rem, 2.5vw, 1.6rem);
}
.data-panel h2,
.case-card h3,
.process-panel h3 {
  margin: 0;
  font-size: clamp(1.1rem, 1.3vw, 1.35rem);
  line-height: 1.22;
  font-weight: 900;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}
.spec-table td {
  border: 1px solid rgba(255,255,255,.2);
  padding: .72rem .78rem;
  vertical-align: top;
  font-size: clamp(.82rem, .9vw, .94rem);
  line-height: 1.35;
}
.spec-table td:first-child {
  color: #cfe7ff;
  font-weight: 900;
  width: 38%;
}
.process-panel {
  background: #fff;
  border: 1px solid var(--kd-line);
  padding: clamp(1rem, 2.5vw, 1.6rem);
}
.process-list {
  display: grid;
  gap: .7rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}
.process-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .65rem;
  align-items: start;
  color: var(--kd-muted);
  line-height: 1.45;
  font-size: clamp(.86rem, .95vw, .98rem);
}
.process-list i {
  color: var(--kd-blue);
  font-size: 1.25rem;
  margin-top: .08rem;
}
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(.85rem, 1.6vw, 1.25rem);
}
.case-card {
  background: #fff;
  border: 1px solid var(--kd-line);
}
.case-card img {
  aspect-ratio: 1.45 / 1;
  object-fit: cover;
}
.case-card div {
  padding: .95rem;
}
.case-card p {
  margin: .45rem 0 0;
  color: var(--kd-muted);
  line-height: 1.45;
  font-size: clamp(.84rem, .9vw, .96rem);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .75rem;
}
.related-card {
  display: block;
  background: #fff;
  border: 1px solid var(--kd-line);
  text-decoration: none;
  overflow: hidden;
}
.related-card img {
  aspect-ratio: 1.42 / 1;
  object-fit: cover;
  background: #eef7fc;
}
.related-card strong {
  display: block;
  padding: .8rem;
  color: #154071;
  line-height: 1.2;
  font-size: clamp(.86rem, .95vw, 1rem);
}
.cta-band {
  background: #052a4d;
  color: #fff;
  padding: clamp(2.2rem, 5vw, 3.6rem) 0;
}
.cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: center;
}
.footer {
  background: #061b31;
  color: rgba(255,255,255,.72);
  padding: 1.2rem 0;
  font-size: .86rem;
}
@media (max-width: 900px) {
  .nav-grid { grid-template-columns: 1fr auto; }
  .nav-links { display: none; }
  .hero-inner,
  .section-head,
  .spec-grid,
  .cta-grid { grid-template-columns: 1fr; }
  .hero { background-position: 64% center; }
  .hero-card { align-self: auto; }
  .case-grid,
  .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .brand-mark img { max-width: 8.8rem; }
  .hero-inner { min-height: 640px; }
  h1 { max-width: 11ch; }
  .case-grid,
  .related-grid { grid-template-columns: 1fr; }
  .spec-table { min-width: 620px; }
  .data-panel { overflow-x: auto; }
}