:root {
  --ink: #111827;
  --steel: #253244;
  --muted: #5f6b7a;
  --line: #dfe5ec;
  --soft: #f4f7fa;
  --white: #ffffff;
  --blue: #0b4f8f;
  --blue-dark: #082f57;
  --blue-soft: #e8f2fc;
  --metal: #c7d0da;
  --accent: #d7a642;
  --shadow: 0 18px 45px rgba(17, 24, 39, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}

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

a {
  color: inherit;
}

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

.narrow {
  width: min(840px, calc(100% - 40px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue-dark);
  font-size: 1.08rem;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.logo::before {
  content: "";
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  box-shadow: inset 0 0 0 5px rgba(255, 255, 255, 0.15);
}

.logo span {
  color: var(--ink);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: var(--steel);
  font-size: 0.94rem;
  font-weight: 800;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--blue);
}

.nav-cta {
  padding: 9px 15px;
  color: var(--white) !important;
  background: var(--blue);
  border-radius: 6px;
}

.nav-toggle {
  display: none;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  font-weight: 800;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 72px;
  background:
    linear-gradient(120deg, rgba(8, 47, 87, 0.95), rgba(13, 69, 118, 0.88)),
    linear-gradient(135deg, #1d2938, #0b4f8f);
  color: var(--white);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -45% 45%;
  height: 540px;
  background: radial-gradient(circle, rgba(215, 166, 66, 0.22), transparent 62%);
  pointer-events: none;
}

.hero-grid,
.split,
.contact-grid,
.content-grid {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 48px;
  align-items: center;
}

.hero-content,
.hero-visual {
  position: relative;
  z-index: 1;
}

.hero h1,
.page-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(2.4rem, 5vw, 4.7rem);
  line-height: 1.03;
  letter-spacing: 0;
}

.hero-text {
  max-width: 650px;
  margin: 0;
  color: #dce8f5;
  font-size: 1.12rem;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow.light {
  color: #f3c96d;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--blue-dark);
}

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

.btn-small {
  min-height: 40px;
  padding: 9px 14px;
  color: var(--white);
  background: var(--blue);
  font-size: 0.9rem;
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 560px;
  gap: 12px;
  margin-top: 36px;
}

.trust-row div {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.trust-row strong {
  display: block;
  font-size: 1.4rem;
}

.trust-row span {
  display: block;
  color: #dce8f5;
  font-size: 0.85rem;
}

.hero-visual {
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.22);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
}

.hero-card {
  display: grid;
  gap: 4px;
  margin: -54px 22px 0;
  position: relative;
  padding: 18px;
  border-radius: 8px;
  color: var(--ink);
  background: var(--white);
  box-shadow: var(--shadow);
}

.hero-card span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section {
  padding: 76px 0;
}

.section.compact {
  padding: 24px 0;
}

.video-section {
  background: linear-gradient(180deg, var(--white), var(--soft));
}

.video-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 42px;
  align-items: center;
}

.video-grid h2 {
  margin: 0 0 14px;
  font-size: clamp(1.75rem, 3.2vw, 2.6rem);
  line-height: 1.16;
}

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

.video-frame {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.video-frame video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  background: var(--ink);
  object-fit: cover;
}

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

.dark-band {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue-dark), #152235);
}

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

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

.section-heading h2,
.split h2,
.cta-box h2,
.content-main h2,
.side-panel h2,
.contact-info h2,
.inquiry-form h2 {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 3.2vw, 2.6rem);
  line-height: 1.16;
  letter-spacing: 0;
}

.section-heading p,
.split p,
.page-hero p {
  color: var(--muted);
  font-size: 1.04rem;
}

.dark-band .split p {
  color: #dce8f5;
}

.logo-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.logo-strip span {
  padding: 18px;
  background: var(--white);
  color: var(--steel);
  font-size: 0.92rem;
  font-weight: 800;
  text-align: center;
}

.card-grid,
.feature-grid,
.quality-grid,
.process-grid,
.stats-grid {
  display: grid;
  gap: 22px;
}

.card-grid.three,
.quality-grid,
.process-grid {
  grid-template-columns: repeat(3, 1fr);
}

.feature-grid,
.stats-grid {
  grid-template-columns: repeat(4, 1fr);
}

.feature-item,
.product-card,
.catalog-card,
.application-card,
.quality-grid article,
.process-grid article,
.side-panel,
.contact-info,
.inquiry-form {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.feature-item {
  padding: 26px;
}

.feature-icon,
.quality-grid span,
.process-grid span {
  color: var(--blue);
  font-weight: 900;
}

.feature-item h3,
.product-card h3,
.application-card h2,
.quality-grid h2,
.process-grid h3,
.catalog-card h2 {
  margin: 12px 0 8px;
  line-height: 1.24;
}

.feature-item p,
.product-card p,
.catalog-card p,
.application-card p,
.quality-grid p,
.process-grid p,
.content-main p,
.site-footer p {
  color: var(--muted);
}

.product-card,
.application-card {
  overflow: hidden;
}

.product-card img,
.application-card img,
.catalog-card img,
.image-frame img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--soft);
}

.product-card h3,
.product-card p,
.application-card h2,
.application-card p {
  padding-left: 22px;
  padding-right: 22px;
}

.product-card p,
.application-card p {
  padding-bottom: 22px;
}

.text-link {
  color: var(--blue);
  font-weight: 900;
  text-decoration: none;
}

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

.application-list a {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 900;
  text-decoration: none;
}

.process-preview {
  display: grid;
  gap: 10px;
}

.process-line {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
}

.process-line div {
  min-height: 120px;
  padding: 20px;
  border-right: 1px solid var(--line);
}

.process-line div:last-child {
  border-right: 0;
}

.process-line span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 14px;
  border-radius: 50%;
  color: var(--white);
  background: var(--blue);
  font-weight: 900;
}

.cta-section {
  padding: 64px 0;
  color: var(--white);
  background: linear-gradient(135deg, #0b4f8f, #082f57);
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.cta-box p {
  color: #dce8f5;
  margin-bottom: 0;
}

.page-hero {
  padding: 78px 0;
  text-align: center;
  background:
    linear-gradient(180deg, rgba(232, 242, 252, 0.9), rgba(255, 255, 255, 0.96)),
    var(--blue-soft);
}

.product-catalog {
  display: grid;
  gap: 24px;
}

.catalog-card {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 28px;
  align-items: center;
  padding: 18px;
}

.catalog-card img {
  border-radius: 8px;
  border: 1px solid var(--line);
}

.tag {
  display: inline-flex;
  margin-bottom: 6px;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--blue-dark);
  background: var(--blue-soft);
  font-size: 0.78rem;
  font-weight: 900;
}

.image-frame {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.image-frame.dark {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

.check-list {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--steel);
}

.check-list li {
  margin-bottom: 10px;
}

.two-columns {
  columns: 2;
  column-gap: 32px;
}

.process-grid article,
.quality-grid article {
  padding: 24px;
}

.quality-grid article {
  min-height: 210px;
}

.content-grid {
  align-items: start;
}

.content-main {
  font-size: 1.04rem;
}

.side-panel,
.contact-info,
.inquiry-form {
  padding: 26px;
}

.stats-grid div {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.stats-grid strong {
  display: block;
  color: var(--blue);
  font-size: 2rem;
}

.stats-grid span {
  color: var(--muted);
  font-weight: 800;
}

.info-item {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.info-item a {
  color: var(--blue);
  font-weight: 900;
  text-decoration: none;
}

.reply-note {
  margin-top: 22px;
  padding: 16px;
  border-radius: 8px;
  color: var(--blue-dark);
  background: var(--blue-soft);
  font-weight: 900;
}

.inquiry-form {
  display: grid;
  gap: 10px;
}

.inquiry-form label {
  color: var(--steel);
  font-weight: 900;
}

.inquiry-form input,
.inquiry-form textarea {
  width: 100%;
  padding: 12px 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
  border-color: var(--blue);
  outline: 3px solid rgba(11, 79, 143, 0.16);
}

.form-message {
  min-height: 24px;
  color: var(--blue-dark);
  font-weight: 900;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer {
  padding: 52px 0 28px;
  color: var(--white);
  background: #0f1724;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 30px;
}

.site-footer h2,
.site-footer h3 {
  margin-top: 0;
}

.site-footer a {
  display: block;
  margin: 8px 0;
  color: #dce8f5;
  text-decoration: none;
}

.copyright {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  color: #aeb9c7;
  font-size: 0.92rem;
}

@media (max-width: 1020px) {
  .nav-links {
    gap: 12px;
  }

  .nav-links a {
    font-size: 0.88rem;
  }

  .feature-grid,
  .stats-grid,
  .logo-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-line {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 860px) {
  .hero-grid,
  .split,
  .video-grid,
  .contact-grid,
  .content-grid,
  .footer-grid,
  .catalog-card {
    grid-template-columns: 1fr;
  }

  .card-grid.three,
  .quality-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .section-heading.with-action,
  .cta-box {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .container,
  .narrow {
    width: min(100% - 28px, 1180px);
  }

  .nav {
    min-height: 66px;
  }

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

  .nav-links {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 20px 18px;
    border-bottom: 1px solid var(--line);
    background: var(--white);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 0;
    font-size: 0.96rem;
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .hero,
  .page-hero {
    padding: 56px 0;
  }

  .section {
    padding: 54px 0;
  }

  .trust-row,
  .logo-strip,
  .feature-grid,
  .stats-grid,
  .application-list,
  .process-line {
    grid-template-columns: 1fr;
  }

  .process-line div {
    border-right: 0;
  }

  .two-columns {
    columns: 1;
  }
}