:root {
  --bg: #0b1119;
  --bg-soft: #121b27;
  --surface: #131f2d;
  --surface-2: #172536;
  --surface-3: #eaf0f6;
  --text: #edf3f8;
  --text-dark: #102031;
  --muted: #9dafc2;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --primary: #1e63ff;
  --primary-strong: #0f46c7;
  --accent: #58d0ff;
  --glow: rgba(30, 99, 255, 0.28);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  --radius: 26px;
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(88, 208, 255, 0.12), transparent 24%),
    radial-gradient(circle at top right, rgba(30, 99, 255, 0.18), transparent 30%),
    linear-gradient(180deg, #081019 0%, #0b1119 18%, #0d1520 100%);
}

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

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

p,
h1,
h2,
h3,
ol,
ul,
li,
blockquote {
  margin: 0;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

.page-shell {
  overflow: clip;
}

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

.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(3, 7, 13, 0.72);
  font-size: 13px;
  color: var(--muted);
}

.topbar-inner,
.topbar-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topbar-inner {
  padding: 12px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(7, 13, 21, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.brand img {
  width: min(100%, 330px);
  height: auto;
  filter: brightness(1.05);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 15px;
}

.site-nav a {
  color: rgba(237, 243, 248, 0.82);
  transition: color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #fff;
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px 0;
  background: #fff;
}

.hero {
  position: relative;
  padding: 86px 0 66px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(5, 12, 20, 0.84) 12%, rgba(5, 12, 20, 0.56) 52%, rgba(5, 12, 20, 0.9) 100%),
    url("https://images.unsplash.com/photo-1581092580497-e0d23cbdf1dc?auto=format&fit=crop&w=1600&q=80") center/cover;
  opacity: 0.66;
}

.hero-backdrop {
  position: absolute;
  inset: auto auto 58px 50%;
  width: 620px;
  height: 620px;
  transform: translateX(-4%);
  background: radial-gradient(circle, rgba(30, 99, 255, 0.42), transparent 62%);
  filter: blur(18px);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr);
  gap: 42px;
  align-items: end;
}

.eyebrow {
  margin-bottom: 16px;
  color: var(--accent);
  font-family: "Barlow", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2 {
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  letter-spacing: -0.03em;
}

.hero h1 {
  max-width: 820px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 0.98;
}

.hero-text {
  max-width: 700px;
  margin-top: 24px;
  color: rgba(237, 243, 248, 0.8);
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 156px;
  padding: 15px 24px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #3e8cff);
  color: #fff;
  box-shadow: 0 18px 40px var(--glow);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: linear-gradient(135deg, var(--primary-strong), var(--primary));
}

.btn-secondary {
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
}

.btn-block {
  width: 100%;
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.hero-image-card,
.hero-card,
.hero-metrics article,
.strategic-grid article,
.product-card,
.advantage-list article,
.cert-panel,
.case-grid article,
.contact-steps,
.contact-info article,
.about-highlights article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-image-card {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  background: rgba(17, 28, 42, 0.88);
}

.hero-image-card img,
.campus-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image-card::after,
.campus-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 36%, rgba(7, 13, 21, 0.82) 100%);
}

.hero-image-card figcaption {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 20px;
  z-index: 1;
  color: #fff;
  font-weight: 700;
}

.hero-card {
  padding: 28px;
  background: linear-gradient(180deg, rgba(20, 34, 49, 0.92), rgba(10, 17, 26, 0.92));
}

.hero-card span {
  display: block;
  color: rgba(237, 243, 248, 0.78);
  font-size: 14px;
}

.hero-card strong {
  display: block;
  margin: 10px 0 12px;
  font-family: "Barlow", sans-serif;
  font-size: 44px;
  line-height: 1;
}

.hero-card p,
.strategic-grid p,
.product-card p,
.advantage-list p,
.cert-panel li,
.case-grid p,
.contact-layout p,
.about-layout p {
  color: var(--muted);
  line-height: 1.85;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.hero-metrics article {
  padding: 20px 22px;
  background: rgba(17, 28, 42, 0.88);
}

.hero-metrics strong,
.about-highlights strong {
  display: block;
  color: #fff;
  font-family: "Barlow", sans-serif;
  font-size: 30px;
}

.hero-metrics span,
.about-highlights span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 96px 0;
}

.strategic-strip {
  padding-top: 20px;
}

.strategic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.strategic-grid article,
.product-card,
.advantage-list article,
.case-grid article,
.contact-steps {
  background: linear-gradient(180deg, rgba(18, 28, 40, 0.9), rgba(10, 17, 26, 0.94));
}

.strategic-grid article {
  padding: 28px;
}

.strategic-grid span,
.product-index,
.solution-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-family: "Barlow", sans-serif;
  font-weight: 700;
}

.strategic-grid span {
  width: 48px;
  height: 48px;
  background: rgba(30, 99, 255, 0.12);
  color: var(--accent);
}

.strategic-grid h2,
.product-card h3,
.advantage-list h3,
.cert-panel h3,
.contact-steps h3,
.case-heading h2 {
  margin-top: 18px;
  font-size: 26px;
  line-height: 1.2;
}

.two-column,
.strengths-layout,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 38px;
  align-items: start;
}

.section-heading h2 {
  font-size: clamp(34px, 4.2vw, 58px);
  line-height: 1.02;
}

.section-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 30px;
}

.heading-note {
  max-width: 520px;
  color: var(--muted);
  line-height: 1.8;
}

.about-layout p + p {
  margin-top: 18px;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.about-highlights article {
  padding: 22px;
  background: rgba(255, 255, 255, 0.04);
}

.campuses {
  padding-top: 28px;
}

.campus-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 22px;
}

.campus-card {
  overflow: hidden;
  background: linear-gradient(180deg, rgba(18, 28, 40, 0.9), rgba(10, 17, 26, 0.94));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.campus-card-feature {
  grid-row: span 2;
}

.campus-media {
  position: relative;
  height: 270px;
  overflow: hidden;
}

.campus-media-tall {
  height: 430px;
}

.campus-copy {
  padding: 24px;
}

.campus-label {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  font-family: "Barlow", sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.campus-copy h3 {
  margin-bottom: 12px;
  font-size: 28px;
}

.campus-copy p {
  color: var(--muted);
  line-height: 1.8;
}

.campus-address {
  margin-top: 14px;
  color: rgba(237, 243, 248, 0.92);
  font-weight: 600;
}

.catalog {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(88, 208, 255, 0.03));
}

.catalog-hero,
.catalog-grid {
  display: grid;
  gap: 22px;
}

.catalog-hero {
  grid-template-columns: 1.2fr 0.8fr;
  margin-bottom: 22px;
}

.catalog-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.catalog-panel {
  overflow: hidden;
  background: linear-gradient(180deg, rgba(18, 28, 40, 0.9), rgba(10, 17, 26, 0.94));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.catalog-panel-wide {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
}

.catalog-frame {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  min-height: 100%;
}

.catalog-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.catalog-copy {
  padding: 24px;
}

.catalog-copy-rich {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}

.catalog-label {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  font-family: "Barlow", sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.catalog-copy h3 {
  margin-bottom: 12px;
  font-size: 28px;
}

.catalog-copy p {
  color: var(--muted);
  line-height: 1.82;
}

.transformer-tags span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(30, 99, 255, 0.12);
  color: rgba(237, 243, 248, 0.92);
  font-size: 14px;
  font-weight: 600;
}

.transformer {
  background: linear-gradient(180deg, rgba(88, 208, 255, 0.04), rgba(255, 255, 255, 0));
}

.transformer-grid,
.transformer-matrix,
.transformer-process {
  display: grid;
  gap: 22px;
}

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

.transformer-matrix {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 22px;
}

.transformer-panel,
.transformer-card {
  padding: 28px;
  background: linear-gradient(180deg, rgba(18, 28, 40, 0.9), rgba(10, 17, 26, 0.94));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.transformer-process {
  margin-top: 22px;
}

.transformer-clients {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 22px;
}

.transformer-label {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  font-family: "Barlow", sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.transformer-panel h3,
.transformer-card h3 {
  margin-bottom: 14px;
  font-size: 28px;
}

.transformer-panel p,
.transformer-card dd,
.transformer-list li,
.transformer-steps li {
  color: var(--muted);
  line-height: 1.82;
}

.transformer-list,
.transformer-steps {
  display: grid;
  gap: 12px;
}

.transformer-list li,
.transformer-steps li {
  position: relative;
  padding-left: 18px;
}

.transformer-list li::before,
.transformer-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.transformer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.transformer-card dl {
  display: grid;
  gap: 18px;
}

.transformer-card dt {
  margin-bottom: 8px;
  color: #fff;
  font-weight: 700;
}

.products {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  position: relative;
  padding: 28px;
  overflow: hidden;
}

.product-card::after {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(88, 208, 255, 0.1), transparent 66%);
}

.product-index {
  min-width: 52px;
  padding: 8px 14px;
  background: rgba(30, 99, 255, 0.12);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.product-card h3 {
  margin-top: 18px;
}

.product-card ul {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.product-card li,
.test-list li,
.contact-steps li {
  position: relative;
  padding-left: 18px;
  color: rgba(237, 243, 248, 0.86);
  line-height: 1.7;
}

.product-card li::before,
.test-list li::before,
.contact-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.solution-matrix {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.solution-detail,
.solution-apps article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: linear-gradient(180deg, rgba(18, 28, 40, 0.9), rgba(10, 17, 26, 0.94));
}

.solution-detail-feature {
  grid-column: span 2;
  background:
    radial-gradient(circle at top right, rgba(88, 208, 255, 0.18), transparent 34%),
    linear-gradient(180deg, rgba(16, 31, 49, 0.94), rgba(10, 17, 26, 0.98));
}

.solution-tag {
  display: inline-flex;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 999px;
  font-family: "Barlow", sans-serif;
  font-weight: 700;
}

.solution-detail h3 {
  margin-top: 18px;
  margin-bottom: 12px;
  font-size: 26px;
  line-height: 1.2;
}

.solution-detail p,
.solution-apps p {
  color: var(--muted);
  line-height: 1.82;
}

.solution-detail ul {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.solution-detail li {
  position: relative;
  padding-left: 18px;
  color: rgba(237, 243, 248, 0.88);
  line-height: 1.7;
}

.solution-detail li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.solution-apps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 22px;
}

.solution-apps h3 {
  margin-bottom: 12px;
  font-size: 24px;
}

.strengths {
  background: linear-gradient(180deg, rgba(88, 208, 255, 0.04), rgba(255, 255, 255, 0));
}

.advantage-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.advantage-list article {
  padding: 26px;
}

.advantage-list h3 {
  margin-top: 0;
  margin-bottom: 12px;
}

.cert-panel {
  padding: 30px;
  background: linear-gradient(180deg, #edf4fb, #dfeaf5);
  color: var(--text-dark);
}

.cert-panel h3,
.cert-panel li,
.cert-panel blockquote {
  color: var(--text-dark);
}

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 22px;
}

.cert-badges span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(16, 32, 49, 0.08);
  font-weight: 700;
}

.test-list {
  display: grid;
  gap: 10px;
}

.cert-panel blockquote {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(16, 32, 49, 0.12);
  line-height: 1.85;
}

.case-study {
  padding-top: 12px;
}

.case-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}

.case-grid article {
  padding: 28px;
}

.case-grid span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--accent);
  font-family: "Barlow", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.contact {
  padding-bottom: 104px;
}

.contact-layout {
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.contact-info article {
  padding: 24px;
  background: rgba(255, 255, 255, 0.04);
}

.contact-info span {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-steps {
  padding: 30px;
}

.contact-steps ol {
  display: grid;
  gap: 14px;
  margin: 22px 0 28px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(3, 7, 13, 0.86);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 36px;
}

.footer-inner strong {
  display: block;
  margin-bottom: 10px;
  font-size: 18px;
}

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

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: rgba(237, 243, 248, 0.8);
}

@media (max-width: 1180px) {
  .hero-grid,
  .two-column,
  .strengths-layout,
  .contact-layout,
  .case-grid,
  .solution-matrix,
  .solution-apps,
  .campus-grid,
  .catalog-hero,
  .catalog-panel-wide,
  .transformer-grid,
  .transformer-matrix,
  .transformer-process,
  .transformer-clients {
    grid-template-columns: 1fr;
  }

  .product-grid,
  .strategic-grid,
  .advantage-list,
  .catalog-grid,
  .solution-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .topbar-inner,
  .topbar-meta,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 20px 22px;
    background: rgba(8, 14, 22, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .site-nav.is-open {
    display: flex;
  }

  .section-heading-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 72px;
  }

  .hero h1 {
    font-size: 46px;
  }

  .hero-text {
    font-size: 16px;
  }

  .product-grid,
  .strategic-grid,
  .advantage-list,
  .contact-info,
  .about-highlights,
  .catalog-grid,
  .solution-matrix,
  .solution-apps {
    grid-template-columns: 1fr;
  }

  .campus-card-feature {
    grid-row: auto;
  }

  .campus-media-tall {
    height: 320px;
  }

  .solution-detail-feature {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .section {
    padding: 78px 0;
  }

  .brand img {
    width: 230px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .strategic-grid h2,
  .product-card h3,
  .solution-detail h3,
  .advantage-list h3,
  .cert-panel h3,
  .contact-steps h3,
  .case-heading h2 {
    font-size: 22px;
  }
}