:root {
      --bg:      #ffffff;
      --surface: #f7f7f8;
      --fg:      #1a1a1a;
      --muted:   #6b6b6b;
      --border:  #e5e5e5;
      --accent:  #1890ff;

      --accent-soft: color-mix(in oklch, var(--accent) 10%, transparent);
      --fg-soft:     color-mix(in oklch, var(--fg) 4%, transparent);
      --surface-alt: #f0f0f2;
      --surface-elevated: #ffffff;

      --font-display: 'Open Sans', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
      --font-body:    'Open Sans', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
      --font-mono:    ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, monospace;

      --fs-h1: clamp(40px, 6vw, 72px);
      --fs-h2: clamp(30px, 4vw, 48px);
      --fs-h3: 20px;
      --fs-lead: 18px;
      --fs-body: 16px;
      --fs-meta: 13px;

      --gap-xs: 8px;
      --gap-sm: 12px;
      --gap-md: 24px;
      --gap-lg: 40px;
      --gap-xl: 72px;
      --gap-2xl: 128px;
      --container: 1280px;
      --gutter: 48px;

      --radius: 8px;
      --radius-lg: 16px;
      --radius-xl: 24px;
    }

body {
      margin: 0;
      background: var(--bg);
      color: var(--fg);
      font-family: var(--font-body);
      font-size: var(--fs-body);
      line-height: 1.6;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

.section {
      padding-block: clamp(72px, 10vw, var(--gap-2xl));
    }

.section-alt {
      background: var(--surface-alt);
    }

.section + .section { border-top: 1px solid var(--border); }

/* Scroll reveal */
    .reveal {
      opacity: 0;
      transform: translateY(32px);
      transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }

.reveal-delay-1 { transition-delay: 0.1s; }

.reveal-delay-2 { transition-delay: 0.2s; }

.reveal-delay-3 { transition-delay: 0.3s; }

.reveal-delay-4 { transition-delay: 0.4s; }

/* Individual item stagger (for grid children) */
    .reveal-item {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1), transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

/* Solution row image clip reveal */
    .solution-row-img img {
      transform: scale(1.08);
      transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    }

.solution-row-img.revealed img {
      transform: scale(1);
    }

h1, .h1 {
      font-family: var(--font-display);
      font-size: var(--fs-h1);
      font-weight: 700;
      line-height: 1.1;
      letter-spacing: -0.02em;
    }

h2, .h2 {
      font-family: var(--font-display);
      font-size: var(--fs-h2);
      font-weight: 700;
      line-height: 1.15;
      letter-spacing: -0.015em;
    }

h3, .h3 {
      font-family: var(--font-display);
      font-size: var(--fs-h3);
      font-weight: 600;
      line-height: 1.35;
      letter-spacing: -0.005em;
    }

.lead {
      font-size: var(--fs-lead);
      line-height: 1.65;
      color: var(--muted);
      max-width: 56ch;
    }

.eyebrow {
      font-family: var(--font-mono);
      font-size: 12px;
      font-weight: 500;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--accent);
      margin: 0 0 var(--gap-md);
    }

.meta {
      font-family: var(--font-mono);
      font-size: var(--fs-meta);
      color: var(--muted);
    }

.num {
      font-family: var(--font-mono);
      font-variant-numeric: tabular-nums;
    }

/* ---- Topnav ---- */
    .topnav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      height: 64px;
      background: transparent;
      border-bottom: 1px solid transparent;
      transition: background 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s, backdrop-filter 0.4s;
    }

.topnav nav a {
      font-size: 16px;
      font-weight: 500;
      color: rgba(255,255,255,0.6);
      transition: color 0.25s;
      position: relative;
      letter-spacing: 0.01em;
    }

.topnav .nav-cta {
      font-size: 15px;
      font-weight: 600;
      color: #ffffff;
      padding: 10px 28px;
      border: 1px solid rgba(255,255,255,0.5);
      border-radius: var(--radius);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      letter-spacing: 0.02em;
    }

/* ---- Buttons ---- */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 14px 32px;
      border-radius: var(--radius);
      border: 1px solid transparent;
      font-size: 16px;
      font-weight: 600;
      letter-spacing: 0.02em;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

.btn:active {
      transform: scale(0.97);
      transition-duration: 0.1s;
    }

.btn-primary:active {
      background: rgba(0,0,0,0.85);
    }

.btn-secondary:active {
      background: rgba(0,0,0,0.06);
      border-color: rgba(0,0,0,0.3);
    }

.nav-cta:active {
      transform: scale(0.96);
      transition-duration: 0.1s;
    }

.btn-primary {
      background: var(--fg);
      color: var(--bg);
      border-color: var(--fg);
    }

.btn-primary:hover {
      background: transparent;
      color: var(--fg);
      border-color: var(--fg);
    }

.btn-secondary {
      background: transparent;
      color: var(--fg);
      border-color: rgba(0,0,0,0.15);
    }

.btn-secondary:hover {
      border-color: rgba(0,0,0,0.4);
      background: rgba(0,0,0,0.04);
    }

/* ---- Hero (video background) ---- */
    .hero {
      position: relative;
      min-height: 100vh;
      display: flex;
      align-items: center;
      overflow: hidden;
      background: #000;
      padding-top: 64px;
    }

.hero-video-wrap {
      position: absolute;
      inset: 0;
      z-index: 0;
    }

.hero-video-wrap video {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

.hero-video-wrap::after {
      content: '';
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.15) 35%, rgba(0,0,0,0.2) 60%, rgba(0,0,0,0.85) 100%),
        linear-gradient(90deg, rgba(0,0,0,0.55) 0%, transparent 50%);
      pointer-events: none;
    }

.hero-grid {
      position: relative;
      z-index: 1;
      display: block;
    }

.hero-content {
      max-width: 760px;
    }

.hero .eyebrow {
      color: rgba(255,255,255,0.5);
      border-color: rgba(255,255,255,0.15);
      font-size: 13px;
      letter-spacing: 0.12em;
    }

.hero h1 {
      margin-bottom: var(--gap-lg);
      max-width: 20ch;
      color: #ffffff;
      font-size: clamp(44px, 7vw, 80px);
      letter-spacing: -0.03em;
      line-height: 1.05;
    }

.hero .lead {
      margin-bottom: var(--gap-xl);
      max-width: 48ch;
      color: rgba(255,255,255,0.65);
      font-size: 19px;
      line-height: 1.7;
    }

.hero-cta {
      display: inline-flex;
      gap: var(--gap-md);
      flex-wrap: wrap;
    }

.hero-cta .btn-primary {
      background: #ffffff;
      color: #000000;
      border-color: #ffffff;
    }

.hero-cta .btn-primary:hover {
      background: transparent;
      color: #ffffff;
      border-color: #ffffff;
    }

.hero-cta .btn-secondary {
      color: #ffffff;
      border-color: rgba(255,255,255,0.35);
    }

.hero-cta .btn-secondary:hover {
      border-color: #ffffff;
      background: rgba(255,255,255,0.08);
    }

.hero-visual { display: none; }

/* Hero entry choreography */
    .hero-anim {
      opacity: 0;
      transform: translateY(28px);
      filter: blur(6px);
      transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                  transform 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                  filter 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    }

.hero-anim.in {
      opacity: 1;
      transform: translateY(0);
      filter: blur(0);
    }

.hero-anim-d1 { transition-delay: 0.1s; }

.hero-anim-d2 { transition-delay: 0.22s; }

.hero-anim-d3 { transition-delay: 0.34s; }

.hero-anim-d4 { transition-delay: 0.46s; }

/* ---- Section header ---- */
    .section-header { margin-bottom: var(--gap-xl); }

.section-header h2 { max-width: 22ch; letter-spacing: -0.02em; }

.section-header .lead { margin-top: var(--gap-sm); font-size: var(--fs-lead); }

.section-header.center { text-align: center; }

.section-header.center h2 { margin-inline: auto; }

.section-header.center .lead { margin-inline: auto; }

/* ---- Core tech grid ---- */
    .tech-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--gap-md);
    }

.tech-card {
      padding: 36px;
      background: var(--surface-elevated);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: 0 1px 3px rgba(0,0,0,0.04);
      transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }

.tech-card:hover {
      border-color: rgba(0,0,0,0.15);
      background: #f5f5f5;
      box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    }

.tech-icon {
      width: 40px;
      height: 40px;
      display: grid;
      place-items: center;
      margin-bottom: var(--gap-md);
      color: var(--fg);
    }

.tech-icon svg { width: 24px; height: 24px; }

.tech-card h3 { margin-bottom: 8px; font-size: 18px; font-weight: 600; }

.tech-card p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.65;
    }

/* ---- Capability highlight ---- */
    .cap-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: var(--gap-md);
    }

.cap-card {
      position: relative;
      aspect-ratio: 3 / 4;
      background: var(--surface-elevated);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 28px;
      padding-top: 45%;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      overflow: hidden;
      box-shadow: 0 1px 3px rgba(0,0,0,0.04);
      transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }

.cap-card:hover {
      border-color: rgba(0,0,0,0.15);
    }

.cap-card .card-visual {
      position: absolute;
      inset: 0 0 40% 0;
      display: flex;
      align-items: center;
      justify-content: center;
    }

.cap-card .card-visual::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 50%;
      background: linear-gradient(to bottom, transparent, var(--surface-elevated));
      pointer-events: none;
    }

.cap-card .card-visual img {
      width: 85%;
      height: 100%;
      object-fit: contain;
      transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }

.cap-card:hover .card-visual img {
      transform: scale(1.06);
    }

.cap-card .card-visual svg {
      width: 60%;
      height: auto;
      opacity: 0.2;
      transition: opacity 0.3s, transform 0.3s;
    }

.cap-card:hover .card-visual svg {
      opacity: 0.35;
      transform: scale(1.04);
    }

.cap-card > * { position: relative; z-index: 1; }

.cap-card h3 { font-size: 18px; margin-bottom: 6px; font-weight: 600; }

.cap-card p { font-size: 13px; color: var(--muted); line-height: 1.55; }

.cap-tag {
      display: inline-block;
      font-family: var(--font-mono);
      font-size: 11px;
      font-weight: 500;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: var(--gap-xs);
    }

/* ---- Stats row ---- */
    .stats-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: var(--gap-lg);
      padding: var(--gap-xl) 0;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      margin-bottom: var(--gap-xl);
    }

.stat-item {
      text-align: center;
      position: relative;
    }

.stat-item + .stat-item::before {
      content: '';
      position: absolute;
      left: 0;
      top: 15%;
      bottom: 15%;
      width: 1px;
      background: var(--border);
    }

.stat-val {
      font-family: var(--font-display);
      font-size: clamp(40px, 5vw, 64px);
      font-weight: 700;
      line-height: 1;
      letter-spacing: -0.03em;
      color: var(--fg);
      transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }

.stat-val.counting {
      opacity: 0;
      transform: scale(0.85);
    }

.stat-label {
      font-size: 14px;
      color: var(--muted);
      margin-top: 8px;
      letter-spacing: 0.02em;
    }

/* ---- Cert grid ---- */
    .cert-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--gap-md);
    }

.cert-card {
      padding: 32px;
      background: var(--surface-elevated);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: 0 1px 3px rgba(0,0,0,0.04);
      transition: border-color 0.3s, box-shadow 0.3s;
    }

.cert-card:hover { border-color: rgba(0,0,0,0.12); }

.cert-card h4 {
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 16px;
    }

.cert-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

.cert-list li {
      font-size: 15px;
      padding-left: 22px;
      position: relative;
      color: rgba(0,0,0,0.75);
      line-height: 1.5;
    }

.cert-list li::before {
      content: '';
      position: absolute;
      left: 0;
      top: 9px;
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--muted);
    }

/* ---- Partner strip ---- */
    .partner-strip {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

.partner-chip {
      font-size: 14px;
      font-weight: 500;
      padding: 10px 22px;
      border: 1px solid var(--border);
      border-radius: 999px;
      color: var(--muted);
      transition: all 0.25s;
    }

.partner-chip:hover {
      border-color: rgba(0,0,0,0.2);
      color: var(--fg);
      background: rgba(0,0,0,0.03);
    }

/* ---- Solution rows ---- */
    .solution-rows {
      display: flex;
      flex-direction: column;
    }

.solution-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--gap-xl);
      align-items: center;
      padding-block: var(--gap-xl);
      border-bottom: 1px solid var(--border);
    }

.solution-row:first-child { border-top: 1px solid var(--border); }

.solution-row:nth-child(even) .solution-row-img { order: 2; }

.solution-row:nth-child(even) .solution-row-text { order: 1; }

.solution-row-img {
      aspect-ratio: 16 / 10;
      background: var(--surface-elevated);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

.solution-row-img img {
      width: 80%;
      height: 80%;
      object-fit: contain;
    }

.solution-row-text h3 {
      font-size: 24px;
      font-weight: 600;
      margin-bottom: 12px;
      letter-spacing: -0.01em;
    }

.solution-row-text p {
      font-size: 16px;
      color: var(--muted);
      line-height: 1.65;
      max-width: 42ch;
    }

/* ---- News ---- */
    .news-list { display: flex; flex-direction: column; }

.news-item {
      display: grid;
      grid-template-columns: 120px 1fr auto;
      gap: var(--gap-lg);
      padding: 28px 24px;
      border-radius: var(--radius);
      align-items: baseline;
      transition: all 0.25s;
      margin: 0 -24px;
    }

.news-item + .news-item { border-top: 1px solid var(--border); }

.news-item:hover { background: rgba(0,0,0,0.02); }

.news-date {
      font-family: var(--font-mono);
      font-size: 14px;
      color: var(--muted);
    }

.news-title { font-size: 17px; font-weight: 500; color: rgba(0,0,0,0.8); }

.news-tag {
      font-size: 12px;
      color: var(--muted);
      padding: 4px 14px;
      border: 1px solid var(--border);
      border-radius: 999px;
      white-space: nowrap;
      transition: border-color 0.2s;
    }

.news-item:hover .news-tag { border-color: rgba(0,0,0,0.15); }

/* ---- CTA ---- */
    .cta-strip {
      text-align: center;
    }

.cta-strip h2 { margin-bottom: var(--gap-md); }

.cta-strip .lead { margin: 0 auto var(--gap-lg); }

/* ---- Footer ---- */
    .pagefoot {
      padding-block: var(--gap-xl);
      border-top: 1px solid var(--border);
      color: var(--muted);
      font-size: 14px;
      background: var(--surface);
    }

.footer-inner {
      display: grid;
      grid-template-columns: 1.5fr auto auto auto auto;
      gap: var(--gap-xl);
      align-items: start;
    }

.footer-brand {
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 700;
      color: var(--fg);
      margin-bottom: 10px;
    }

.footer-col h4 {
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: rgba(0,0,0,0.45);
      margin-bottom: 16px;
    }

.footer-bottom {
      margin-top: var(--gap-xl);
      padding-top: var(--gap-lg);
      border-top: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: rgba(0,0,0,0.4);
    }

.footer-desc {
      max-width: 32ch;
      font-size: 13px;
      color: var(--muted);
    }

/* ---- Responsive ---- */
    @media (max-width: 1024px) {
      .cap-card { padding: 20px; }
      :root { --gutter: 32px; }
    }

@media (max-width: 768px) {
      .cap-grid { grid-template-columns: repeat(3, 1fr); }
    }

@media (max-width: 920px) {
      .hero { min-height: 80vh; }
      .hero h1 { font-size: clamp(32px, 7vw, 48px); text-shadow: 0 2px 14px rgba(0,0,0,0.45); }
      .hero .lead { font-size: 16px; color: rgba(255,255,255,0.94); text-shadow: 0 1px 10px rgba(0,0,0,0.55); }
      .hero .eyebrow { color: rgba(255,255,255,0.8); text-shadow: 0 1px 8px rgba(0,0,0,0.5); }
      .hero-video-wrap::after {
        background:
          linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.38) 35%, rgba(0,0,0,0.5) 60%, rgba(0,0,0,0.85) 100%),
          linear-gradient(90deg, rgba(0,0,0,0.55) 0%, transparent 50%);
      }
      .tech-grid { grid-template-columns: repeat(2, 1fr); }
      .solution-row { grid-template-columns: 1fr; gap: var(--gap-md); }
      .solution-row:nth-child(even) .solution-row-img { order: 0; }
      .solution-row:nth-child(even) .solution-row-text { order: 0; }
      .cert-grid { grid-template-columns: 1fr; }
      .stats-row { grid-template-columns: repeat(2, 1fr); }
      .stat-item + .stat-item::before { display: none; }
      .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--gap-lg); }
      .footer-bottom { flex-direction: column; gap: var(--gap-sm); text-align: center; }
      .news-item { grid-template-columns: 1fr; gap: 4px; padding: 20px 16px; margin: 0 -16px; }
      .news-item:hover { background: none; }
      :root { --gutter: 24px; }
    }

@media (max-width: 640px) {
      .cap-grid { grid-template-columns: repeat(2, 1fr); }
      .tech-grid { grid-template-columns: 1fr; }
      .stats-row { grid-template-columns: 1fr 1fr; }
      .footer-inner { grid-template-columns: 1fr; }
      .hero { min-height: 70vh; }
      .hero-cta { flex-direction: column; width: 100%; }
      .hero-cta .btn { width: 100%; justify-content: center; }
    }

@media (prefers-reduced-motion: reduce) {
      .hero-anim,
      .reveal,
      .reveal-item {
        opacity: 1 !important;
        transform: none !important;
        filter: none !important;
        transition: none !important;
      }
      .stat-val {
        transition: none !important;
      }
      .stat-val.counting {
        opacity: 1 !important;
        transform: none !important;
      }
      .solution-row-img img {
        transform: none !important;
        transition: none !important;
      }
      .topnav {
        transition: none !important;
      }
    }

/* ---- Focus visible ---- */
    :focus { outline: none; }

:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 3px;
      border-radius: 4px;
    }

.btn:focus-visible { outline-offset: 4px; }

.topnav nav a:focus-visible { outline-offset: 6px; }

/* ---- Cert image ---- */
    .cert-image-wrap {
      margin-top: var(--gap-lg);
      margin-bottom: var(--gap-xl);
      text-align: center;
    }

.cert-image-wrap img {
      max-width: 100%;
      height: auto;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
    }

/* ---- Partner section ---- */
    .partner-section {
      margin-top: var(--gap-xl);
      text-align: center;
    }

.partner-section h3 {
      font-size: 20px;
      margin-bottom: 8px;
    }

.partner-section .partner-subtitle {
      font-size: 14px;
      color: var(--muted);
      margin: 0 0 var(--gap-md);
    }

/* ---- Solution row hover ---- */
    .solution-row:hover {
      background: rgba(0,0,0,0.015);
    }

/* ---- News item enhanced hover ---- */
    .news-item {
      transition: background 0.25s, padding-left 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

.news-item:hover {
      padding-left: 32px;
    }

.news-title {
      transition: color 0.2s;
    }

.news-item:hover .news-title {
      color: var(--fg);
    }

/* ---- Tech card hover arrow ---- */
    .tech-card {
      position: relative;
    }

.tech-card::after {
      content: '';
      position: absolute;
      bottom: 20px;
      right: 20px;
      width: 20px;
      height: 20px;
      opacity: 0;
      transition: opacity 0.3s, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      transform: translate(-4px, 4px);
      background: currentColor;
      mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Cpath d='M7 17L17 7M17 7H7M17 7v10'/%3E%3C/svg%3E") center/contain no-repeat;
      -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Cpath d='M7 17L17 7M17 7H7M17 7v10'/%3E%3C/svg%3E") center/contain no-repeat;
    }

.tech-card:hover::after {
      opacity: 0.25;
      transform: translate(0, 0);
    }

/* ---- Nav dropdowns ---- */
    .nav-dropdown {
      position: relative;
    }

.nav-dropdown > a {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

.nav-dropdown > a::before {
      content: '';
      display: none;
    }

.nav-dropdown .dropdown-arrow {
      width: 8px;
      height: 8px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg) translateY(-2px);
      transition: transform 0.25s;
      flex-shrink: 0;
      opacity: 0.6;
    }

.dropdown-menu {
      position: absolute;
      top: 100%;
      left: 50%;
      transform: translateX(-50%) translateY(4px);
      min-width: 180px;
      background: rgba(10,10,10,0.95);
      backdrop-filter: blur(20px) saturate(180%);
      -webkit-backdrop-filter: blur(20px) saturate(180%);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius);
      padding: 8px 0;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.2s, transform 0.2s, background 0.3s, border-color 0.3s;
      box-shadow: 0 8px 24px rgba(0,0,0,0.3);
      z-index: 120;
    }

.topnav.scrolled .dropdown-menu {
      background: rgba(255,255,255,0.98);
      border-color: var(--border);
      box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    }

.nav-dropdown:hover .dropdown-menu,
    .nav-dropdown:focus-within .dropdown-menu {
      opacity: 1;
      pointer-events: auto;
      transform: translateX(-50%) translateY(0);
    }

.nav-dropdown:hover .dropdown-arrow {
      transform: rotate(-135deg) translateY(-2px);
    }

.dropdown-menu a {
      display: block;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 500;
      color: rgba(255,255,255,0.7);
      white-space: nowrap;
      transition: background 0.15s, color 0.15s;
    }

.dropdown-menu a:hover {
      background: rgba(255,255,255,0.08);
      color: #ffffff;
    }

.topnav.scrolled .dropdown-menu a:hover {
      background: var(--surface);
      color: var(--fg);
    }

.dropdown-menu a::after {
      display: none !important;
    }

/* ---- Mobile nav toggle ---- */
    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 40px;
      height: 40px;
      padding: 8px;
      border-radius: var(--radius);
      cursor: pointer;
      z-index: 110;
    }

.nav-toggle span {
      display: block;
      width: 100%;
      height: 2px;
      background: #ffffff;
      border-radius: 1px;
      transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s, background 0.3s;
      transform-origin: center;
    }

.topnav.scrolled .nav-toggle span {
      background: var(--fg);
    }

.mobile-nav {
      display: none;
    }

@media (max-width: 920px) {
      .nav-toggle {
        display: flex;
      }
      .topnav nav {
        display: none;
      }
      .topnav > .container > .nav-cta {
        display: none;
      }
      .nav-toggle.active span {
        background: #ffffff !important;
      }
      .mobile-nav {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border-bottom: 1px solid var(--border);
        padding: 16px var(--gutter) 24px;
        gap: 8px;
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      }
      .mobile-nav.open {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
      }
      .mobile-nav nav {
        display: flex;
        flex-direction: column;
        gap: 0;
      }
      .mobile-nav nav a {
        font-size: 16px;
        font-weight: 500;
        color: rgba(0, 0, 0, 0.75);
        padding: 14px 0;
        border-bottom: 1px solid var(--border);
        transition: color 0.2s;
      }
      .mobile-nav nav a:last-child {
        border-bottom: none;
      }
      .mobile-nav nav a:hover {
        color: #1a1a1a;
      }
      .mobile-nav .nav-cta {
        margin-top: 12px;
        text-align: center;
        font-size: 15px;
        font-weight: 600;
        color: #1a1a1a;
        padding: 12px 28px;
        border: 1px solid rgba(0, 0, 0, 0.25);
        border-radius: var(--radius);
        transition: all 0.25s;
      }
      .mobile-nav .nav-cta:hover {
        background: #1a1a1a;
        color: #ffffff;
        border-color: #1a1a1a;
      }
      .dropdown-menu {
        position: static;
        transform: none;
        min-width: 0;
        background: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border: none;
        border-radius: 0;
        padding: 0 0 0 16px;
        box-shadow: none;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        pointer-events: auto;
        transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      }
      .nav-dropdown.open .dropdown-menu,
        .nav-dropdown:hover .dropdown-menu,
        .nav-dropdown:focus-within .dropdown-menu {
        max-height: 600px;
        overflow-y: auto;
        transform: none;
      }
      .dropdown-menu a {
        padding: 10px 0;
        font-size: 14px;
        border-bottom: 1px solid var(--border);
      }
      .dropdown-menu a:last-child {
        border-bottom: none;
      }
    }

    /* ===== INDUSTRY APPLICATIONS GRID ===== */
    .apps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .app-card {
      position: relative;
      display: flex;
      flex-direction: column;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 16px;
      overflow: hidden;
      color: inherit;
      text-decoration: none;
      transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, border-color 0.35s ease;
    }
    .app-card::after {
      content: "";
      position: absolute;
      inset: 0;
      border-radius: inherit;
      pointer-events: none;
      box-shadow: inset 0 0 0 1px rgba(24, 144, 255, 0);
      transition: box-shadow 0.35s ease;
    }
    .app-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 24px 48px rgba(15, 23, 42, 0.14);
    }
    .app-card:hover::after {
      box-shadow: inset 0 0 0 1px rgba(24, 144, 255, 0.35);
    }
    .app-card-media {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
    }
    .app-card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .app-card-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 62%, rgba(10, 18, 32, 0.38) 100%);
      opacity: 0.9;
      transition: opacity 0.35s ease;
    }
    .app-card:hover .app-card-media img {
      transform: scale(1.07);
    }
    .app-card:hover .app-card-media::after {
      opacity: 0.55;
    }
    .app-card-body {
      padding: 20px 22px 22px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .app-card-body h3 {
      position: relative;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 0.01em;
      margin-bottom: 10px;
      transition: color 0.3s ease;
    }
    .app-card-body h3::before {
      content: "";
      width: 4px;
      height: 16px;
      border-radius: 2px;
      background: var(--accent);
      flex: none;
    }
    .app-card:hover .app-card-body h3 {
      color: var(--accent);
    }
    .app-card-body p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.75;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .app-more {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 16px;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
    }
    .app-more i {
      font-style: normal;
      transition: transform 0.3s ease;
    }
    .app-card:hover .app-more i {
      transform: translateX(4px);
    }

    /* ===== SYSTEM PRODUCTS GRID ===== */
    .prod-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .prod-card {
      display: flex;
      flex-direction: column;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      overflow: hidden;
      color: inherit;
      text-decoration: none;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .prod-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
    }
    .prod-card-media {
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .prod-card-media img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
      padding: 16px;
      transition: transform 0.5s ease;
    }
    .prod-card:hover .prod-card-media img {
      transform: scale(1.05);
    }
    .prod-card-body {
      padding: 18px 18px 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .prod-card-body h3 {
      font-size: 17px;
      line-height: 1.5;
      min-height: 51px;
      margin-bottom: 8px;
    }
    .prod-card-body p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.7;
      flex: 1;
    }
    .prod-more {
      display: inline-block;
      margin-top: 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
    }
    .prod-all {
      text-align: center;
      margin-top: 44px;
    }

    @media (max-width: 920px) {
      .apps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .prod-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
    }
    @media (max-width: 640px) {
      .apps-grid,
      .prod-grid {
        grid-template-columns: 1fr;
      }
      .prod-all {
        margin-top: 32px;
      }
    }
/* ============================================================
   HOME NEWS CARDS (nc-) — 无人机资讯：图卡三列，参考原型新闻板块
   ============================================================ */
.nc-eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #369bb9;
  margin-bottom: 10px;
}
.nc-subtitle {
  margin-top: 12px;
  font-size: 15px;
  color: #7b8798;
}

.nc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.nc-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #e8edf3;
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.nc-card:hover {
  transform: translateY(-5px);
  border-color: rgba(54, 155, 185, 0.5);
  box-shadow: 0 16px 34px rgba(34, 48, 74, 0.1);
}
.nc-card-img {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #f5f7fa;
}
.nc-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.nc-card:hover .nc-card-img img {
  transform: scale(1.05);
}
.nc-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 18px 20px 20px;
}
.nc-card-date {
  font-size: 13px;
  font-weight: 600;
  color: #369bb9;
  margin-bottom: 8px;
}
.nc-card-title {
  font-size: 16px;
  line-height: 1.5;
  font-weight: 700;
  color: #22304a;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 48px;
}
.nc-card-title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}
.nc-card-title a:hover {
  color: #369bb9;
}
.nc-card-excerpt {
  flex: 1;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: #7b8798;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.nc-card-more {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 700;
  color: #369bb9;
  text-decoration: none;
}
.nc-card-more svg {
  transition: transform 0.25s ease;
}
.nc-card-more:hover svg {
  transform: translateX(3px);
}

.nc-actions {
  text-align: center;
  margin-top: 38px;
}
.nc-all {
  display: inline-block;
  padding: 11px 34px;
  border-radius: 999px;
  background: linear-gradient(135deg, #369bb9, #2c86a3);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 8px 18px rgba(54, 155, 185, 0.3);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.nc-all:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(54, 155, 185, 0.38);
  color: #fff;
}

@media (max-width: 1024px) {
  .nc-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}
@media (max-width: 640px) {
  .nc-grid {
    grid-template-columns: 1fr;
  }
}