@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #F8FAFC;
  --bg-card: #ffffff;

  --accent: #2563EB;
  --accent-dark: #1D4ED8;
  --accent-purple: #7C3AED;
  --accent-gradient: linear-gradient(135deg, #2563EB, #7C3AED);
  --text-primary: #1E293B;
  --text-secondary: #475569;
  --text-dim: #94A3B8;
  --border: #E2E8F0;
  --border-light: #F1F5F9;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(37,99,235,0.08);
  --radius: 12px;
  --radius-sm: 6px;
  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Microsoft YaHei', -apple-system, sans-serif;
  --max-width: 1100px;
  --nav-height: 68px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a { color:var(--accent); text-decoration:none; transition:color 0.2s; }
a:hover { color:var(--accent-dark); }
img { max-width:100%; height:auto; display:block; }
ul, ol { list-style:none; }
.container { max-width:var(--max-width); margin:0 auto; padding:0 24px; }

::selection { background:rgba(37,99,235,0.12); }
::-webkit-scrollbar { width:5px; }
::-webkit-scrollbar-track { background:var(--bg-primary); }
::-webkit-scrollbar-thumb { background:var(--border); border-radius:3px; }

/* Navigation */
.navbar {
  position:fixed; top:0; left:0; right:0;
  height:var(--nav-height);
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  z-index:1000;
}
.navbar .container {
  display:flex; align-items:center; justify-content:space-between;
  height:100%;
}
.navbar .logo { display:flex; align-items:center; gap:10px; }
.navbar .logo img { height:32px; width:auto; }
.navbar .logo .logo-text {
  font-family:var(--font-display);
  font-size:16px;
  font-weight:600;
  color:var(--text-primary);
  letter-spacing:-0.3px;
}
.navbar .logo .logo-text .accent { color:var(--accent); }
.nav-links { display:flex; align-items:center; gap:2px; }
.nav-links a {
  color:var(--text-secondary);
  padding:6px 16px;
  font-size:13px;
  font-weight:500;
  border-radius:var(--radius-sm);
  transition:all 0.2s;
  font-family:var(--font-body);
}
.nav-links a:hover { color:var(--accent); background:rgba(37,99,235,0.06); }
.nav-links a.active { color:var(--accent); background:rgba(37,99,235,0.08); font-weight:600; }
.navbar .phone { color:var(--text-dim); font-size:13px; font-weight:500; }
.nav-toggle { display:none; flex-direction:column; gap:5px; cursor:pointer; background:none; border:none; padding:4px; }
.nav-toggle span { width:22px; height:2px; background:var(--text-primary); border-radius:2px; transition:0.3s; }

/* Dropdown - General */
.nav-dropdown { position:relative; }
.nav-dropdown > a {
  display:inline-flex; align-items:center; gap:4px;
  color:var(--text-secondary);
  padding:6px 16px;
  font-size:13px;
  font-weight:500;
  border-radius:var(--radius-sm);
  transition:all 0.2s;
  font-family:var(--font-body);
}
.nav-dropdown > a:hover { color:var(--accent); background:rgba(37,99,235,0.06); }
.nav-dropdown > a.active { color:var(--accent); background:rgba(37,99,235,0.08); font-weight:600; }
.drop-arrow { transition:transform 0.25s; opacity:0.4; }
.nav-dropdown.open .drop-arrow { transform:rotate(180deg); opacity:0.7; }

/* ==========================================================================
   Shared Mega Menu (products / solutions / cases)
   ========================================================================== */
.mega-menu {
  position:fixed; top:var(--nav-height); left:0; right:0;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 12px 60px rgba(0,0,0,0.12);
  z-index:1000;
  max-height:calc(100vh - var(--nav-height) - 40px);
  overflow-y:auto;
  opacity:1; visibility:hidden; pointer-events:none;
  transform:translateY(-100%);
  transition:transform 0.45s cubic-bezier(0.25,0.46,0.45,0.94), visibility 0s linear 0.45s;
}
.mega-menu.open {
  opacity:1; visibility:visible; pointer-events:auto;
  transform:translateY(0);
  transition:transform 0.45s cubic-bezier(0.25,0.46,0.45,0.94), visibility 0s linear 0s;
}

/* Content sections: only one active at a time */
.mega-menu .mega-content { display:none; }
.mega-menu .mega-content.active { display:block; }

/* Products section — sidebar + tab panels */
.mega-menu .mega-content[data-menu="products"] .mega-inner {
  max-width:1200px; margin:0 auto;
  display:grid; grid-template-columns:220px 1fr;
  min-height:420px;
}

/* Sidebar */
.mega-menu .mega-sidebar {
  background:var(--bg-secondary);
  padding:28px 0;
  border-right:1px solid var(--border);
}
.mega-menu .mega-sidebar .mega-tab {
  display:block; width:100%; text-align:left;
  padding:11px 28px;
  font-size:14px; font-weight:500;
  color:var(--text-secondary);
  background:none; border:none;
  cursor:pointer; font-family:var(--font-body);
  transition:all 0.15s;
  position:relative;
}
.mega-menu .mega-sidebar .mega-tab:hover { color:var(--accent); background:rgba(37,99,235,0.04); }
.mega-menu .mega-sidebar .mega-tab.active {
  color:var(--accent); font-weight:600;
  background:#fff;
}
.mega-menu .mega-sidebar .mega-tab.active::after {
  content:''; position:absolute; left:0; top:0; bottom:0;
  width:3px; background:var(--accent);
  border-radius:0 2px 2px 0;
}

/* Products: tab panels */
.mega-menu .mega-main {
  padding:32px 40px;
  background:#fff;
}
.mega-menu .mega-content[data-menu="products"] .mega-panel { display:none; }
.mega-menu .mega-content[data-menu="products"] .mega-panel.active { display:block; }

.mega-menu .mega-content[data-menu="products"] .mega-panel .mega-section { display:block; margin-bottom:28px; }
.mega-menu .mega-content[data-menu="products"] .mega-panel .mega-section:last-child { margin-bottom:0; }

.mega-menu .mega-content[data-menu="products"] .mega-panel .mega-section-title {
  font-family:var(--font-display);
  font-size:11px; font-weight:700;
  color:var(--accent);
  letter-spacing:2px; text-transform:uppercase;
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--border-light);
}

.mega-menu .mega-content[data-menu="products"] .mega-panel .mega-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(160px, 1fr));
  gap:8px;
}

.mega-menu .mega-content[data-menu="products"] .mega-panel .mega-item {
  display:block;
  padding:10px 16px;
  font-size:13px; font-weight:500;
  color:var(--text-secondary);
  border:1px solid var(--border-light);
  border-radius:8px;
  transition:all 0.15s;
  text-decoration:none;
}
.mega-menu .mega-content[data-menu="products"] .mega-panel .mega-item:hover {
  color:var(--accent);
  border-color:var(--accent);
  background:rgba(37,99,235,0.04);
  box-shadow:0 2px 8px rgba(37,99,235,0.06);
}

/* Solutions / Cases: single-column grid */
.mega-menu .mega-content[data-menu="solutions"] .mega-inner,
.mega-menu .mega-content[data-menu="cases"] .mega-inner {
  max-width:1200px; margin:0 auto;
  display:grid; grid-template-columns:220px 1fr;
  min-height:340px;
}
.mega-menu .mega-content[data-menu="solutions"] .mega-main,
.mega-menu .mega-content[data-menu="cases"] .mega-main {
  padding:32px 40px;
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(220px, 1fr));
  gap:8px;
  align-content:start;
}
.mega-menu .mega-content[data-menu="solutions"] .mega-main a,
.mega-menu .mega-content[data-menu="cases"] .mega-main a {
  display:block;
  padding:12px 18px;
  font-size:14px; font-weight:500;
  color:var(--text-secondary);
  border:1px solid var(--border-light);
  border-radius:8px;
  transition:all 0.15s;
  text-decoration:none;
}
.mega-menu .mega-content[data-menu="solutions"] .mega-main a:hover,
.mega-menu .mega-content[data-menu="cases"] .mega-main a:hover {
  color:var(--accent);
  border-color:var(--accent);
  background:rgba(37,99,235,0.04);
  box-shadow:0 2px 8px rgba(37,99,235,0.06);
}

/* Hero */
.hero {
  margin-top:var(--nav-height);
  min-height:500px;
  display:flex;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.hero::before {
  content:'';
  position:absolute; inset:0;
  z-index:2;
  background:linear-gradient(135deg, rgba(0,0,0,0.6), rgba(0,0,0,0.35));
  pointer-events:none;
}
.hero::after {
  content:'';
  position:absolute; inset:0;
  z-index:3;
  pointer-events:none;
  box-shadow:inset 0 0 120px rgba(0,0,0,0.08), inset 0 0 4px rgba(37,99,235,0.06);
}

/* Slideshow layer */
.hero-bg-layer {
  position:absolute; inset:0;
  z-index:0;
}
.hero-slide {
  position:absolute; inset:0;
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  opacity:0;
  animation:heroSlide 24s ease-in-out infinite;
  transform:scale(1.15);
}
.hero-slide:nth-child(1) { animation-delay:0s; }
.hero-slide:nth-child(2) { animation-delay:8s; }
.hero-slide:nth-child(3) { animation-delay:16s; }

@keyframes heroSlide {
  0%   { opacity:0; transform:scale(1.15); }
  4%   { opacity:1; transform:scale(1.1); }
  29%  { opacity:1; transform:scale(1.03); }
  33%  { opacity:0; transform:scale(1); }
  100% { opacity:0; transform:scale(1.15); }
}

/* Pulse glow */
.hero-pulse {
  position:absolute;
  z-index:1;
  width:600px; height:600px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
  top:50%; left:50%;
  transform:translate(-50%,-50%);
  animation:pulseGlow 4s ease-in-out infinite;
  pointer-events:none;
}
@keyframes pulseGlow {
  0%,100% { transform:translate(-50%,-50%) scale(1); opacity:0.5; }
  50% { transform:translate(-50%,-50%) scale(1.3); opacity:1; }
}

/* Particles canvas */
.hero-particles {
  position:absolute; inset:0;
  z-index:1;
  pointer-events:none;
}
.hero .container {
  width:100%;
  position:relative;
  z-index:5;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
}
.hero .hero-content { max-width:640px; }
.hero-badge {
  display:flex; flex-direction:column; align-items:center; gap:2px;
  margin-bottom:20px;
}
.hero-badge .en {
  font-family:var(--font-body);
  font-size:15px; font-weight:500;
  color:rgba(255,255,255,0.6);
  letter-spacing:8px;
  text-transform:uppercase;
  text-shadow:none;
  line-height:1.1;
}
.hero-badge .zh {
  font-family:var(--font-body);
  font-size:38px;
  font-weight:700;
  color:#fff;
  letter-spacing:6px;
  line-height:1.2;
}
.hero .hero-content h1 {
  font-family:var(--font-display);
  font-size:40px;
  font-weight:700;
  line-height:1.1;
  letter-spacing:-0.5px;
  color:var(--text-primary);
  margin-bottom:16px;
}
.hero .hero-content h1 .accent { color:var(--accent); }
.hero .hero-content h1 .purple { color:var(--accent-purple); }
.hero-brand-glass {
  display:inline-flex; align-items:center; gap:10px;
  padding:8px 28px;
  background:rgba(255,255,255,0.08);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:100px;
  margin-bottom:20px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,0.85);
  letter-spacing:3px;
  user-select:none;
}
.hero-brand-glass .dot {
  color:rgba(255,255,255,0.25);
}
.hero .hero-content p {
  font-size:15px;
  color:rgba(255,255,255,0.7);
  margin-bottom:28px;
  line-height:1.8;
}
.hero .hero-content .btn-group { display:flex; gap:10px; justify-content:center; }
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:11px 24px;
  border-radius:50px;
  font-family:var(--font-body);
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  transition:all 0.2s;
  border:none;
}
.btn-solid {
  background:var(--accent);
  color:#fff;
  box-shadow:0 4px 14px rgba(37,99,235,0.2);
}
.btn-solid:hover { background:var(--accent-dark); transform:translateY(-1px); box-shadow:0 6px 20px rgba(37,99,235,0.25); color:#fff; }
.btn-outline {
  background:transparent;
  border:1px solid var(--border);
  color:var(--text-primary);
}
.btn-outline:hover { border-color:var(--accent); color:var(--accent); }
.hero .btn-outline {
  border-color:rgba(255,255,255,0.25);
  color:#fff;
}
.hero .btn-outline:hover {
  border-color:#fff;
  color:#fff;
  background:rgba(255,255,255,0.1);
}

/* Section */
.section { padding:80px 0; }
.section:nth-child(even) { background:var(--bg-secondary); }
.section-header {
  text-align:center;
  margin-bottom:48px;
}
.section-header .overline {
  font-family:var(--font-display);
  font-size:10px;
  font-weight:600;
  color:var(--accent);
  letter-spacing:3px;
  text-transform:uppercase;
  margin-bottom:8px;
}
.section-header h2 {
  font-family:var(--font-display);
  font-size:28px;
  font-weight:700;
  letter-spacing:-0.3px;
  color:var(--text-primary);
}
.section-header h2 .accent { color:var(--accent); }
.section-header .divider {
  width:40px; height:3px;
  background:var(--accent-gradient);
  border-radius:2px;
  margin:14px auto 0;
}

/* Stats */
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.stat-card {
  text-align:center;
  padding:32px 16px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  transition:all 0.25s ease;
}
.stat-card:hover { border-color:var(--accent); box-shadow:var(--shadow-lg); }
.stat-card.card-3d:hover { transform:translateY(-4px) rotateX(2deg); }
.stat-card .num {
  font-family:var(--font-display);
  font-size:34px;
  font-weight:700;
  color:var(--accent);
  line-height:1;
  margin-bottom:6px;
}
.stat-card .lbl { font-size:13px; color:var(--text-secondary); font-weight:500; }

/* Timeline */
.timeline {
  max-width:720px; margin:0 auto; position:relative;
  padding:20px 0;
}
.timeline::before {
  content:''; position:absolute; left:120px; top:0; bottom:0;
  width:2px; background:var(--border);
}
.tl-item {
  display:flex; gap:40px; margin-bottom:40px;
}
.tl-item:last-child { margin-bottom:0; }
.tl-marker {
  flex:0 0 120px; text-align:right; position:relative;
  padding-right:28px;
}
.tl-year {
  font-family:var(--font-display);
  font-size:18px; font-weight:700;
  color:var(--accent); line-height:1.4;
}
.tl-dot {
  position:absolute; right:-5px; top:5px;
  width:12px; height:12px; border-radius:50%;
  background:var(--accent); border:3px solid var(--bg-primary);
  box-shadow:0 0 0 2px var(--accent);
}
.tl-body {
  flex:1; padding-left:0;
}
.tl-body h3 {
  font-family:var(--font-display);
  font-size:18px; font-weight:600;
  color:var(--text-primary);
  margin-bottom:8px;
}
.tl-body p {
  font-size:14px; line-height:1.8;
  color:var(--text-secondary); margin:0;
}

/* Advantages */
.adv-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.adv-card {
  padding:28px 24px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  transition:all 0.25s ease;
}
.adv-card:hover { border-color:var(--accent); box-shadow:var(--shadow-lg); }
.adv-card.card-3d:hover { transform:translateY(-4px) rotateX(2deg); }
.adv-card .icon {
  width:44px; height:44px;
  background:rgba(37,99,235,0.08);
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:16px;
}
.adv-card .icon svg { stroke:var(--accent); }
.adv-card h3 { font-size:15px; font-weight:700; margin-bottom:8px; }
.adv-card p { font-size:14px; color:var(--text-secondary); line-height:1.7; }

/* Products */
.prod-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.prod-card {
  text-decoration:none; color:inherit; display:block;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all 0.25s ease;
}
.prod-card:hover { border-color:var(--accent); box-shadow:var(--shadow-lg); }
.prod-card.card-3d:hover { transform:translateY(-4px) rotateX(2deg); }
.prod-card .thumb { width:100%; height:170px; object-fit:cover; }
.prod-card .info { padding:16px 20px; }
.prod-card .info h3 { font-size:15px; font-weight:700; color:var(--text-primary); margin-bottom:4px; }
.prod-card .info .meta { font-size:13px; color:var(--text-dim); }

/* Product Overview Page */
.cat-block { margin-bottom:48px; }
.cat-sub { margin-bottom:32px; }
.cat-sub-title {
  font-family:var(--font-display);
  font-size:14px;
  font-weight:600;
  color:var(--text-primary);
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--border-light);
}
.prod-overview-grid {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
}
@media (max-width:768px) {
  .prod-overview-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:480px) {
  .prod-overview-grid { grid-template-columns:1fr; }
}

/* Page Banner */
.page-banner {
  margin-top:var(--nav-height);
  padding:60px 0;
  text-align:center;
  border-bottom:1px solid var(--border);
}
.page-banner h1 {
  font-family:var(--font-display);
  font-size:30px;
  font-weight:700;
  letter-spacing:-0.3px;
}
.page-banner h1 .accent { color:var(--accent); }
.page-banner p { color:var(--text-secondary); font-size:15px; margin-top:4px; }

/* Timeline */
.timeline { max-width:680px; margin:0 auto; }
.timeline-item {
  display:flex; gap:20px;
  margin-bottom:24px;
  padding:20px 24px;
  background:var(--bg-card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  border-left:3px solid var(--accent);
  transition:all 0.2s;
}
.timeline-item:hover { border-left-color:var(--accent-purple); box-shadow:var(--shadow-sm); }
.timeline-item .year {
  font-family:var(--font-display);
  font-size:11px;
  font-weight:600;
  color:var(--accent);
  letter-spacing:1px;
  text-transform:uppercase;
  min-width:80px;
  padding-top:2px;
}
.timeline-item .content h3 { font-size:16px; font-weight:700; margin-bottom:4px; }
.timeline-item .content p { font-size:14px; color:var(--text-secondary); line-height:1.8; }

/* Solutions */
.sol-item {
  display:flex; align-items:center; gap:20px;
  padding:20px 24px;
  margin-bottom:10px;
  background:var(--bg-card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  transition:all 0.2s;
}
.sol-item:hover { border-color:var(--accent); box-shadow:var(--shadow-sm); }
.sol-item .s-date { min-width:80px; text-align:center; }
.sol-item .s-date .d {
  font-family:var(--font-display);
  font-size:24px;
  font-weight:700;
  color:var(--accent);
  line-height:1;
}
.sol-item .s-date .m { font-size:12px; color:var(--text-dim); }
.sol-item .s-body h3 { font-size:15px; font-weight:700; margin-bottom:4px; }
.sol-item .s-body p { font-size:14px; color:var(--text-secondary); }

/* Cases */
.cases-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
.case-card {
  background:var(--bg-card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all 0.25s ease;
}
.case-card:hover { border-color:var(--accent); box-shadow:var(--shadow-lg); }
.case-card.card-3d:hover { transform:translateY(-4px) rotateX(2deg); }
.case-card .c-img {
  height:160px;
  background:var(--bg-secondary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:36px;
}
.case-card .c-body { padding:20px 24px; }
.case-card .c-body .tag {
  display:inline-block;
  padding:2px 10px;
  background:rgba(37,99,235,0.06);
  color:var(--accent);
  font-size:11px;
  font-weight:600;
  border-radius:20px;
  margin-bottom:8px;
}
.case-card .c-body h3 { font-size:15px; font-weight:700; margin-bottom:6px; }
.case-card .c-body p { font-size:14px; color:var(--text-secondary); line-height:1.7; }

/* Featured case (solutions page) */
.featured-case {
  display:block;
  padding:40px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  text-decoration:none;
  color:inherit;
  transition:box-shadow 0.2s, transform 0.2s;
}
.featured-case:hover {
  box-shadow:var(--shadow-lg);
  border-color:var(--accent);
  color:inherit;
}
.featured-case h3 {
  font-family:var(--font-display);
  font-size:20px; font-weight:700;
  color:var(--text-primary);
  margin:14px 0 10px;
}
.featured-case > p { font-size:14px; color:var(--text-secondary); line-height:1.8; margin-bottom:20px; }
.fc-tags { display:flex; gap:6px; flex-wrap:wrap; }
.fc-tag {
  padding:3px 12px; border-radius:50px;
  font-size:10px; font-weight:600;
  background:rgba(37,99,235,0.06);
  color:var(--accent); letter-spacing:1px;
}
.fc-metrics {
  display:flex; gap:28px; margin-bottom:18px;
  padding:18px 0; border-top:1px solid var(--border-light);
  border-bottom:1px solid var(--border-light);
}
.fc-m { display:flex; flex-direction:column; }
.fc-num {
  font-family:var(--font-display);
  font-size:22px; font-weight:700;
  color:var(--accent);
}
.fc-lbl { font-size:12px; color:var(--text-dim); margin-top:2px; }
.fc-arrow {
  font-size:13px; font-weight:600;
  color:var(--accent);
}
.featured-case:hover .fc-arrow { text-decoration:underline; }

/* Contact */
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.contact-panel {
  background:var(--bg-card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  padding:32px;
}
.contact-panel h3 { font-size:17px; font-weight:700; margin-bottom:20px; }
.ci-row { display:flex; gap:14px; margin-bottom:18px; align-items:flex-start; }
.ci-row:last-child { margin-bottom:0; }
.ci-row .ci-icon {
  width:40px; height:40px; min-width:40px;
  background:rgba(37,99,235,0.08);
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.ci-row .ci-icon svg { stroke:var(--accent); }
.ci-row .ci-text h4 { font-size:14px; font-weight:600; margin-bottom:2px; }
.ci-row .ci-text p { font-size:14px; color:var(--text-secondary); }
.form-group { margin-bottom:16px; }
.form-group label { display:block; font-size:13px; font-weight:600; color:var(--text-primary); margin-bottom:6px; }
.form-group input, .form-group textarea {
  width:100%; padding:12px 16px;
  background:var(--bg-secondary);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  color:var(--text-primary);
  font-size:14px;
  font-family:var(--font-body);
  outline:none;
  transition:border-color 0.2s;
}
.form-group input:focus, .form-group textarea:focus { border-color:var(--accent); }
.form-group textarea { height:100px; resize:vertical; }

/* Recruitment */
.recruit-wrap { margin-top:48px; }
.recruit-card {
  background:var(--bg-card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  margin-bottom:14px;
  overflow:hidden;
}
.recruit-card .rc-header { padding:16px 24px; border-bottom:1px solid var(--border-light); }
.recruit-card .rc-header h3 { font-size:15px; font-weight:700; }
.recruit-table { width:100%; border-collapse:collapse; }
.recruit-table tr { border-bottom:1px solid var(--border-light); }
.recruit-table td { padding:10px 24px; font-size:14px; color:var(--text-secondary); vertical-align:top; }
.recruit-table td:first-child { width:90px; font-weight:600; color:var(--text-primary); }
.recruit-table ul li { padding:2px 0; font-size:14px; color:var(--text-secondary); }

/* Product Detail */
.prod-selector { display:flex; gap:6px; margin-bottom:24px; flex-wrap:wrap; }
.prod-selector .sel-btn {
  padding:8px 20px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:50px;
  color:var(--text-secondary);
  font-size:13px;
  font-weight:500;
  cursor:pointer;
  transition:all 0.2s;
  font-family:var(--font-body);
}
.prod-selector .sel-btn:hover { border-color:var(--accent); color:var(--accent); }
.prod-selector .sel-btn.active { background:var(--accent); color:#fff; border-color:var(--accent); }
.prod-showcase { display:grid; grid-template-columns:1fr 1fr; gap:28px; margin-bottom:28px; }
.prod-showcase .p-img { border-radius:var(--radius); overflow:hidden; border:1px solid var(--border-light); }
.prod-showcase .p-intro h2 {
  font-family:var(--font-display);
  font-size:22px;
  font-weight:700;
  letter-spacing:-0.3px;
  margin-bottom:12px;
}
.prod-showcase .p-intro h2 .accent { color:var(--accent); }
.prod-showcase .p-intro p { font-size:14px; color:var(--text-secondary); line-height:1.8; }
.prod-tabs { display:flex; gap:4px; border-bottom:1px solid var(--border); margin-bottom:20px; }
.prod-tabs .ptab {
  padding:10px 24px;
  background:transparent; border:none;
  color:var(--text-dim);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  position:relative;
  font-family:var(--font-body);
  transition:color 0.2s;
}
.prod-tabs .ptab.active { color:var(--accent); font-weight:600; }
.prod-tabs .ptab.active::after {
  content:''; position:absolute;
  bottom:-1px; left:0; right:0;
  height:2px;
  background:var(--accent);
  border-radius:1px;
}
.tab-panel { display:none; }
.tab-panel.active { display:block; }
.spec-table { width:100%; border-collapse:collapse; }
.spec-table tr { border-bottom:1px solid var(--border-light); }
.spec-table td { padding:10px 14px; font-size:14px; color:var(--text-secondary); vertical-align:top; }
.spec-table td:first-child { width:130px; font-weight:600; color:var(--text-primary); }
.feature-list li {
  padding:6px 0; font-size:14px; color:var(--text-secondary); line-height:1.6;
  display:flex; gap:10px;
}
.feature-list li::before {
  content:''; width:6px; height:6px; min-width:6px;
  background:var(--accent); border-radius:50%; margin-top:8px;
}

/* Footer */
.footer { padding:60px 0 0; border-top:1px solid var(--border); background:var(--bg-secondary); }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1.5fr; gap:40px; padding-bottom:40px; border-bottom:1px solid var(--border); }
.footer-col h4 { font-size:14px; font-weight:700; margin-bottom:16px; }
.footer-col p { font-size:14px; color:var(--text-secondary); line-height:1.7; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul li a { color:var(--text-secondary); font-size:14px; }
.footer-col ul li a:hover { color:var(--accent); }
.footer-bottom { padding:24px 0; text-align:center; }
.footer-bottom p { font-size:13px; color:var(--text-dim); }

/* Animations */
.reveal { opacity:0; transform:translateY(20px); transition:0.5s cubic-bezier(0.16,1,0.3,1); }
.reveal.visible { opacity:1; transform:translateY(0); }

@media (prefers-reduced-motion:reduce) {
  .reveal { opacity:1; transform:none; }
  .card-3d:hover { transform:none !important; }

}

/* Responsive */
@media (max-width:1024px) {
  .hero .hero-content { max-width:100%; }
  .hero .hero-content .btn-group { justify-content:center; }
  .stats-grid, .adv-grid, .prod-grid { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:768px) {
  .nav-links { display:none; position:absolute; top:var(--nav-height); left:0; right:0; background:rgba(255,255,255,0.98); flex-direction:column; padding:12px; border-bottom:1px solid var(--border); }
  .nav-links.open { display:flex; }
  .nav-toggle { display:flex; }
  .navbar .phone { display:none; }
  .nav-dropdown { width:100%; }
  .nav-dropdown .drop-trigger { width:100%; }
  .mega-menu { display:none !important; }
  .hero { min-height:auto; padding:40px 0; }
  .hero .hero-content h1 { font-size:28px; }
  .hero-brand-glass { font-size:13px; padding:6px 18px; gap:6px; }
  .section { padding:48px 0; }
  .section-header h2 { font-size:24px; }
  .stats-grid, .adv-grid, .prod-grid { grid-template-columns:repeat(2,1fr); gap:12px; }
  .prod-showcase { grid-template-columns:1fr; }
  .contact-grid { grid-template-columns:1fr; }
  .cases-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .page-banner h1 { font-size:24px; }
  .timeline::before { left:16px; }
  .tl-item { flex-direction:column; gap:8px; margin-bottom:28px; }
  .tl-marker { flex:none; text-align:left; padding-right:0; padding-left:36px; }
  .tl-dot { left:10px; right:auto; top:4px; }
  .tl-year { font-size:16px; }
}
@media (max-width:480px) {
  .stats-grid, .adv-grid, .prod-grid { grid-template-columns:1fr; }
  .sol-item { flex-direction:column; text-align:center; }
}

/* ── App Carousel ── */
.app-carousel {
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
}
.app-carousel .carousel-track {
  display:flex;
  gap:24px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scroll-behavior:smooth;
  -webkit-overflow-scrolling:touch;
  padding:8px 0;
  flex:1;
}
.app-carousel .carousel-track::-webkit-scrollbar { display:none; }
.app-carousel .carousel-card {
  flex:0 0 calc(50% - 12px);
  min-width:320px;
  scroll-snap-align:start;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  display:flex;
  flex-direction:column;
  transition:box-shadow 0.2s;
}
.app-carousel .carousel-card:hover { box-shadow:var(--shadow-md); }
.app-carousel .carousel-card-top {
  padding:28px 28px 24px;
  flex:1;
}
.app-carousel .carousel-tags {
  display:flex;
  gap:6px;
  flex-wrap:wrap;
  margin-bottom:14px;
}
.app-carousel .carousel-tag {
  padding:3px 10px;
  border-radius:50px;
  font-size:10px;
  font-weight:600;
  background:rgba(37,99,235,0.06);
  color:var(--accent);
  letter-spacing:1px;
}
.app-carousel .carousel-card h3 {
  font-family:var(--font-display);
  font-size:17px;
  font-weight:700;
  color:var(--text-primary);
  margin-bottom:10px;
  line-height:1.35;
}
.app-carousel .carousel-card p {
  font-size:13px;
  color:var(--text-secondary);
  line-height:1.8;
  margin:0;
}
.app-carousel .carousel-btn {
  width:40px; height:40px;
  border-radius:50%;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text-primary);
  font-size:22px;
  line-height:1;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  transition:all 0.2s;
  box-shadow:var(--shadow-sm);
}
.app-carousel .carousel-btn:hover {
  border-color:var(--accent);
  color:var(--accent);
  box-shadow:var(--shadow-md);
}
.carousel-dots {
  display:flex;
  justify-content:center;
  gap:12px;
  margin-top:24px;
}
.carousel-dot {
  width:12px; height:12px;
  border-radius:50%;
  background:var(--border);
  border:none;
  cursor:pointer;
  transition:all 0.2s;
  padding:0;
}
.carousel-dot.active {
  background:var(--accent);
  width:32px;
  border-radius:6px;
}
@media (max-width:768px) {
  .app-carousel .carousel-card { flex:0 0 100%; }
  .app-carousel .carousel-btn { display:none; }
}

/* ── HCP-4000-Sec 信创高吞吐网络安全平台 ── */
.sub-model-head { margin:34px 0 16px; padding-top:22px; border-top:1px solid var(--border-light); }
.sub-model-head:first-child { margin-top:0; padding-top:0; border-top:none; }
.sub-model-head h3 { font-family:var(--font-display); font-size:17px; font-weight:700; color:var(--text-primary); margin:0 0 6px; }
.sub-model-head p { font-size:13px; color:var(--text-secondary); line-height:1.8; margin:0 0 16px; }

/* Scenario cards */
.scenario-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.scenario-card { padding:22px; background:#fff; border:1px solid var(--border); border-radius:var(--radius); transition:all 0.2s; }
.scenario-card:hover { border-color:var(--accent); box-shadow:var(--shadow-lg); transform:translateY(-2px); }
.scenario-card h4 { font-family:var(--font-display); font-size:15px; font-weight:700; color:var(--text-primary); margin-bottom:8px; }
.scenario-card p { font-size:13px; color:var(--text-secondary); line-height:1.8; }
.scenario-tags { display:flex; gap:6px; flex-wrap:wrap; margin-top:12px; }
.scenario-tags .stag { padding:2px 10px; border-radius:50px; font-size:10px; font-weight:600; background:rgba(37,99,235,0.06); color:var(--accent); letter-spacing:0.5px; }

/* Deployment cards */
.dep-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.dep-card { padding:24px; background:#fff; border:1px solid var(--border); border-radius:var(--radius); border-top:3px solid var(--accent); transition:box-shadow 0.2s; }
.dep-card:hover { box-shadow:var(--shadow-md); }
.dep-card h4 { font-family:var(--font-display); font-size:15px; font-weight:700; color:var(--text-primary); margin-bottom:10px; }
.dep-card p { font-size:13px; color:var(--text-secondary); line-height:1.8; margin:0; }

/* Cross-link strip */
.link-strip { background:var(--accent-gradient); border-radius:var(--radius); color:#fff; padding:24px 28px; display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-top:48px; }
.link-strip h3 { font-family:var(--font-display); font-size:16px; font-weight:700; margin:0 0 4px; }
.link-strip p { font-size:13px; color:rgba(255,255,255,0.85); margin:0; }
.link-strip .btn { background:#fff; color:var(--accent); }
.link-strip .btn:hover { background:rgba(255,255,255,0.9); color:var(--accent-dark); }

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

/* Chart figures (ECharts) */
.chart-figure { margin:20px 0; }
.chart-figure figcaption { font-size:13px; font-weight:700; color:var(--text-primary); margin-bottom:8px; }