:root {
  --bg: #091018;
  --surface: #101c2a;
  --surface-soft: #132337;
  --line: #2f4a63;
  --text: #ecf5ff;
  --text-soft: #aac0d6;
  --accent: #ff7a1b;
  --accent-soft: #ffc499;
  --max-width: 1180px;
  --radius: 18px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 5%, rgba(255, 122, 27, 0.2), transparent 34%),
    radial-gradient(circle at 85% 18%, rgba(115, 170, 255, 0.18), transparent 38%),
    linear-gradient(160deg, #070d13 0%, #0d1a27 52%, #0a1521 100%);
  min-height: 100vh;
  line-height: 1.65;
}

.noise-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.02),
      rgba(255, 255, 255, 0.02) 1px,
      transparent 1px,
      transparent 3px
    );
  opacity: 0.28;
  z-index: -1;
}

.container {
  width: min(var(--max-width), calc(100% - 3rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  backdrop-filter: blur(10px);
  background: rgba(7, 14, 22, 0.75);
  border-bottom: 1px solid rgba(157, 190, 222, 0.2);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 1.2rem;
}

.brand {
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-mark {
  font-family: "Rajdhani", sans-serif;
  letter-spacing: 0.08em;
  font-size: 1.05rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #ffbf8f);
  color: #1c140f;
  padding: 0.48rem 0.62rem;
  border-radius: 0.48rem;
}

.brand-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: #d8e8f8;
}

.main-nav {
  display: flex;
  gap: 1.2rem;
}

.main-nav a {
  color: #d8e8f8;
  text-decoration: none;
  font-size: 0.94rem;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  background: var(--accent);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(30, 49, 68, 0.7);
  color: var(--text);
  padding: 0.45rem 0.75rem;
}

.hero {
  padding: 6.4rem 0 4.6rem;
}

.detail-hero {
  padding: 5.8rem 0 3.8rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: stretch;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
  align-items: start;
}

.eyebrow {
  margin: 0;
  color: var(--accent-soft);
  letter-spacing: 0.14em;
  font-weight: 600;
  font-size: 0.82rem;
  font-family: "Rajdhani", sans-serif;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 6vw, 3.35rem);
  margin: 0.55rem 0 1.1rem;
  font-weight: 800;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 4.5vw, 2.6rem);
  margin: 0.5rem 0 1.5rem;
}

.hero-copy p {
  color: #d4e5f6;
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.8rem;
}

.btn {
  text-decoration: none;
  border-radius: 999px;
  padding: 0.72rem 1.35rem;
  font-weight: 700;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.btn.primary {
  color: #1e1510;
  background: linear-gradient(120deg, var(--accent), #ffac73);
  box-shadow: 0 10px 28px rgba(255, 122, 27, 0.28);
}

.btn.ghost {
  color: var(--text);
  border: 1px solid #496985;
  background: rgba(18, 33, 47, 0.5);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}

.metric-card,
.hero-tag {
  background: linear-gradient(160deg, rgba(25, 42, 61, 0.9), rgba(13, 24, 37, 0.9));
  border: 1px solid rgba(168, 199, 228, 0.22);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.metric-card {
  padding: 1.4rem;
}

.metric-card h2 {
  font-size: 1.12rem;
  margin-bottom: 0.75rem;
}

.metric-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.68rem;
}

.metric-card li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px dashed rgba(170, 194, 218, 0.26);
  padding-bottom: 0.52rem;
}

.metric-card li span {
  color: var(--text-soft);
}

.metric-card li strong {
  color: #f4fbff;
  font-family: "Rajdhani", sans-serif;
  font-size: 1.05rem;
}

.hero-tag {
  padding: 0.95rem 1.2rem;
  font-size: 0.88rem;
  color: #d2e2f4;
}

section {
  padding: 4.5rem 0;
}

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

.product-card,
.capability-grid article,
.contact-card {
  background: linear-gradient(170deg, rgba(19, 35, 52, 0.92), rgba(10, 20, 31, 0.95));
  border: 1px solid rgba(160, 191, 218, 0.25);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.product-card {
  padding: 1.4rem;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 58%, rgba(255, 122, 27, 0.08));
  pointer-events: none;
}

.product-card.accent {
  border-color: rgba(255, 122, 27, 0.5);
}

.product-id {
  margin: 0;
  font-family: "Rajdhani", sans-serif;
  font-size: 1.95rem;
  color: rgba(255, 173, 119, 0.95);
}

.product-card h3 {
  margin: 0.35rem 0 0.8rem;
  font-size: 1.24rem;
}

.product-card p,
.product-card li,
.capability-grid p,
.contact-card p {
  color: #d1e0ef;
}

.product-card ul {
  padding-left: 1.1rem;
  margin: 1rem 0 0;
}

.product-link {
  margin-top: 1.1rem;
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.gnss-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.gnss-block {
  background: linear-gradient(175deg, rgba(18, 35, 52, 0.93), rgba(7, 18, 30, 0.96));
  border: 1px solid rgba(153, 188, 220, 0.26);
  border-radius: var(--radius);
  padding: 1.4rem;
}

.gnss-block p,
.gnss-block li {
  color: #d4e4f5;
}

.gnss-block ol {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.metric-grid div {
  border: 1px solid rgba(158, 188, 212, 0.28);
  border-radius: 12px;
  padding: 0.74rem;
  background: rgba(23, 41, 58, 0.52);
}

.metric-grid span {
  display: block;
  color: var(--text-soft);
  font-size: 0.82rem;
}

.metric-grid strong {
  font-size: 0.95rem;
}

.gnss-table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 780px;
  background: rgba(12, 24, 36, 0.86);
  border: 1px solid rgba(156, 188, 214, 0.3);
  border-radius: 14px;
  overflow: hidden;
}

th,
td {
  padding: 0.85rem 0.9rem;
  border-bottom: 1px solid rgba(147, 179, 206, 0.2);
  text-align: left;
  vertical-align: top;
}

th {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: #fdc7a2;
  background: rgba(34, 52, 71, 0.7);
}

.capability-grid article {
  padding: 1.2rem;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}

.timeline div {
  border: 1px solid rgba(157, 187, 212, 0.26);
  border-radius: 14px;
  background: rgba(15, 29, 42, 0.86);
  padding: 1rem;
  min-height: 138px;
}

.timeline span {
  display: inline-block;
  font-family: "Rajdhani", sans-serif;
  font-size: 1.45rem;
  color: #ffb07f;
}

.timeline p {
  margin: 0.6rem 0 0;
  color: #d6e5f4;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
  align-items: start;
}

.contact-card {
  padding: 1.35rem;
}

.contact-card p {
  margin: 0 0 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.contact-card span {
  color: var(--text-soft);
  font-size: 0.86rem;
}

.contact-card strong {
  font-size: 1rem;
}

.site-footer {
  border-top: 1px solid rgba(159, 189, 215, 0.28);
  background: rgba(7, 12, 18, 0.75);
}

.footer-wrap {
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-wrap p {
  margin: 0;
  color: #b7c9db;
  font-size: 0.88rem;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.68s ease, transform 0.68s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .product-grid,
  .capability-grid,
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timeline div:last-child {
    grid-column: span 2;
  }
}

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: 76px;
    right: 1.5rem;
    background: rgba(10, 22, 34, 0.96);
    border: 1px solid rgba(156, 188, 214, 0.28);
    border-radius: 12px;
    padding: 0.6rem;
    display: none;
    flex-direction: column;
    min-width: 170px;
  }

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

  .hero-grid,
  .detail-grid,
  .gnss-layout,
  .split-grid,
  .contact-wrap {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 4.6rem;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(var(--max-width), calc(100% - 1.4rem));
  }

  section {
    padding: 3.7rem 0;
  }

  .product-grid,
  .capability-grid,
  .timeline,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .timeline div:last-child {
    grid-column: auto;
  }

  .brand-text {
    font-size: 0.86rem;
  }

  .btn {
    width: 100%;
  }
}