@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --bg-primary: #07070d;
  --bg-secondary: #0c0c1a;
  --bg-card: rgba(12, 12, 30, 0.6);
  --text-primary: #e8e8f0;
  --text-secondary: #8888aa;
  --accent-1: #00b4d8;
  --accent-2: #0077b6;
  --accent-3: #4cc9f0;
  --gradient-1: linear-gradient(135deg, #00b4d8, #0077b6);
  --gradient-2: linear-gradient(135deg, #4cc9f0, #00b4d8);
  --gradient-3: linear-gradient(135deg, #7209b7, #0077b6);
  --glow: 0 0 20px rgba(0, 180, 216, 0.3);
  --glow-strong: 0 0 40px rgba(0, 180, 216, 0.5);
  --border-glow: 1px solid rgba(0, 180, 216, 0.2);
  --border-glow-hover: 1px solid rgba(0, 180, 216, 0.5);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Noto Sans SC', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-subtitle {
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--accent-1);
  font-weight: 500;
  display: inline-block;
  margin-bottom: 12px;
  position: relative;
}

.section-subtitle::before,
.section-subtitle::after {
  content: '';
  display: inline-block;
  width: 30px;
  height: 1px;
  background: var(--accent-1);
  margin: 0 12px;
  vertical-align: middle;
}

.section-header h2 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto;
}

.gradient-text {
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-1);
  margin: 16px auto;
  border-radius: 2px;
  position: relative;
}

.divider::after {
  content: '';
  position: absolute;
  right: -8px;
  top: -2px;
  width: 7px;
  height: 7px;
  background: var(--accent-1);
  border-radius: 50%;
  box-shadow: var(--glow);
}

/* Loading */
#loading {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s, visibility 0.6s;
}

#loading.hide {
  opacity: 0;
  visibility: hidden;
}

.loader {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(0, 180, 216, 0.1);
  border-top-color: var(--accent-1);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(7, 7, 13, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: var(--border-glow);
  padding: 10px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
}

.logo img { height: 36px; }

.nav-menu {
  display: flex;
  gap: 32px;
}

.nav-menu a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-1);
  transition: var(--transition);
  border-radius: 1px;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

#particleCanvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 119, 182, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(114, 9, 183, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 100%, rgba(0, 180, 216, 0.08) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 60px;
  align-items: center;
}

.hero-tag {
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--accent-1);
  margin-bottom: 20px;
  display: inline-block;
  padding: 6px 16px;
  border: var(--border-glow);
  border-radius: 20px;
  background: rgba(0, 180, 216, 0.05);
}

.hero-text h1 {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-btns {
  display: flex;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: var(--glow);
}

.btn-primary:hover {
  box-shadow: var(--glow-strong);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent-1);
  border: var(--border-glow);
}

.btn-outline:hover {
  background: rgba(0, 180, 216, 0.1);
  border-color: var(--accent-1);
  transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-video {
  width: 460px;
  max-height: 420px;
  border-radius: 20px;
  box-shadow: var(--glow-strong);
  border: 1px solid rgba(0, 180, 216, 0.25);
}

.floating-robot {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.robot-core {
  width: 100px;
  height: 100px;
  background: var(--gradient-1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pulse-core 3s infinite;
  box-shadow: var(--glow-strong);
  position: relative;
  z-index: 2;
}

.core-inner {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.3);
  animation: pulse-inner 2s infinite;
}

@keyframes pulse-core {
  0%, 100% { transform: scale(1); box-shadow: 0 0 30px rgba(0, 180, 216, 0.4); }
  50% { transform: scale(1.05); box-shadow: 0 0 60px rgba(0, 180, 216, 0.6); }
}

@keyframes pulse-inner {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.8); opacity: 0.6; }
}

.orbit {
  position: absolute;
  border: 1px solid rgba(0, 180, 216, 0.15);
  border-radius: 50%;
  animation: spin-orbit 8s linear infinite;
}

.o1 { width: 180px; height: 180px; animation-duration: 8s; }
.o2 { width: 250px; height: 250px; animation-duration: 12s; animation-direction: reverse; }
.o3 { width: 320px; height: 320px; animation-duration: 16s; }

.orbit .dot {
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--accent-1);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-1);
}

@keyframes spin-orbit { to { transform: rotate(360deg); } }

.robot-ring {
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 180, 216, 0.2);
  animation: spin-orbit 20s linear infinite;
}

.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 12px;
  letter-spacing: 2px;
  animation: bob 2s infinite;
}

.scroll-arrow {
  width: 2px;
  height: 30px;
  background: linear-gradient(to bottom, var(--accent-1), transparent);
  position: relative;
}

.scroll-arrow::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: -4px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--accent-1);
  border-bottom: 2px solid var(--accent-1);
  transform: rotate(45deg);
}

@keyframes bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* About */
.about { background: var(--bg-secondary); }

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 15px;
  line-height: 1.9;
}

.stats-row {
  display: flex;
  gap: 40px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: var(--border-glow);
}

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

.stat-num {
  font-size: 36px;
  font-weight: 900;
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
  display: block;
}

.about-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-card {
  background: var(--bg-card);
  border: var(--border-glow);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
  cursor: default;
  backdrop-filter: blur(10px);
}

.about-card:hover {
  border-color: rgba(0, 180, 216, 0.4);
  transform: translateX(8px);
  box-shadow: var(--glow);
}

.about-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.about-card p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Products */
.products {
  background: var(--bg-primary);
}

.product-tabs {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 4px;
  border: var(--border-glow);
}

.tab-btn {
  padding: 12px 24px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  border-radius: 8px;
  transition: var(--transition);
}

.tab-btn:hover { color: var(--text-primary); }

.tab-btn.active {
  background: rgba(0, 180, 216, 0.15);
  color: var(--accent-1);
  box-shadow: 0 0 20px rgba(0, 180, 216, 0.1);
}

.product-panel { display: none; }

.product-panel.active { display: block; }

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-image-area {
  display: flex;
  justify-content: center;
  align-items: center;
}

.product-img {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius);
  border: var(--border-glow);
  object-fit: cover;
  aspect-ratio: 4 / 5;
  transition: var(--transition);
}

.product-img:hover {
  border-color: rgba(0, 180, 216, 0.5);
  box-shadow: var(--glow);
  transform: scale(1.01);
}

.product-img-placeholder {
  width: 100%;
  aspect-ratio: 4 / 5;
  max-width: 500px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-img-placeholder span {
  position: relative;
  z-index: 1;
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 500;
}

.product-info h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-sub {
  color: var(--accent-1);
  font-size: 14px;
  margin-bottom: 24px;
}

.product-specs {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.spec {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--accent-1);
}

.spec-label {
  font-size: 11px;
  color: var(--accent-1);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.spec-val {
  font-size: 14px;
  color: var(--text-primary);
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.product-features li {
  font-size: 14px;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
}

.product-features li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-1);
}

/* Scenarios */
.scenarios { background: var(--bg-secondary); }

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.scenario-card {
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  cursor: default;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.scenario-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  transition: var(--transition);
  z-index: 0;
}

.scenario-card[data-scenario="exhibition"]::before { background-image: url('../images/scenario-exhibition.jpg'); }
.scenario-card[data-scenario="mall"]::before { background-image: url('../images/scenario-mall.jpg'); }
.scenario-card[data-scenario="campus"]::before { background-image: url('../images/scenario-campus.jpg'); }
.scenario-card[data-scenario="conference"]::before { background-image: url('../images/scenario-conference.jpg'); }
.scenario-card[data-scenario="hotel"]::before { background-image: url('../images/scenario-hotel.jpg'); }
.scenario-card[data-scenario="retail"]::before { background-image: url('../images/scenario-retail.jpg'); }

.scenario-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  z-index: 0;
  border: var(--border-glow);
  border-radius: var(--radius);
}

.scenario-card:hover {
  border-color: rgba(0, 180, 216, 0.4);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.scenario-card:hover::before {
  opacity: 0.25;
}

.scenario-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: rgba(0, 180, 216, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-glow);
  position: relative;
  z-index: 1;
}

.scenario-icon i {
  font-size: 24px;
  color: var(--accent-1);
}

.scenario-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.scenario-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

/* Tech */
.tech { background: var(--bg-primary); }

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tech-card {
  background: var(--bg-card);
  border: var(--border-glow);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  cursor: default;
  backdrop-filter: blur(10px);
  position: relative;
}

.tech-card:hover {
  border-color: rgba(0, 180, 216, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--glow);
}

.tech-card {
  text-align: center;
}

.tech-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: rgba(0, 180, 216, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-glow);
  transition: var(--transition);
}

.tech-card:hover .tech-icon {
  border-color: rgba(0, 180, 216, 0.5);
  box-shadow: var(--glow);
  background: rgba(0, 180, 216, 0.15);
}

.tech-icon i {
  font-size: 28px;
  color: var(--accent-1);
}

.tech-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.tech-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.tech-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  overflow: hidden;
}

.tech-bar span {
  display: block;
  height: 100%;
  background: var(--gradient-1);
  border-radius: 2px;
  transition: width 1.5s ease;
  width: 0;
}

.tech-bar.animate span { width: attr(data-width); }

/* News */
.news { background: var(--bg-secondary); }

.news-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 768px) {
  .news-timeline { grid-template-columns: 1fr; }
}

.news-card {
  background: var(--bg-card);
  border: var(--border-glow);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: default;
  backdrop-filter: blur(10px);
}

.news-card:hover {
  border-color: rgba(0, 180, 216, 0.5);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.news-img {
  height: 180px;
  background:
    radial-gradient(circle at 20% 30%, rgba(0, 180, 216, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(114, 9, 183, 0.08) 0%, transparent 50%);
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 16px;
}

.news-date {
  background: rgba(7, 7, 13, 0.8);
  backdrop-filter: blur(10px);
  border: var(--border-glow);
  border-radius: 8px;
  padding: 8px 12px;
  text-align: center;
  line-height: 1.2;
}

.news-date .day {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-1);
}

.news-date .month {
  font-size: 10px;
  color: var(--text-secondary);
}

.news-body {
  padding: 20px;
}

.news-tag {
  font-size: 11px;
  color: var(--accent-1);
  background: rgba(0, 180, 216, 0.08);
  padding: 3px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
}

.news-body h3 {
  font-size: 15px;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-body p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-link {
  font-size: 13px;
  color: var(--accent-1);
  transition: var(--transition);
}

.news-link:hover { color: var(--accent-3); }

/* Contact */
.contact { background: var(--bg-primary); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--bg-card);
  border: var(--border-glow);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: rgba(0, 180, 216, 0.4);
}

.contact-ico {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(0, 180, 216, 0.08);
  border-radius: 10px;
  border: var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-ico i {
  font-size: 18px;
  color: var(--accent-1);
}

.contact-item h4 {
  font-size: 14px;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 13px;
  color: var(--text-secondary);
}

.contact-map {
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-container {
  width: 100%;
  max-width: 500px;
}

.contact-form {
  background: var(--bg-card);
  border: var(--border-glow);
  border-radius: var(--radius);
  padding: 32px;
}

.contact-form h3 {
  font-size: 18px;
  margin-bottom: 24px;
  text-align: center;
}

.form-group {
  margin-bottom: 16px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid rgba(0, 180, 216, 0.15);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
  box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 12px rgba(0, 180, 216, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-row .form-group {
  flex: 1;
}

.form-group select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-group select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
}

.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-1);
  cursor: pointer;
}

.form-checkbox a {
  color: var(--accent-1);
  text-decoration: underline;
}

.form-submit {
  width: 100%;
  cursor: pointer;
}

.map-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: var(--border-glow);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 40% 40%, rgba(0, 180, 216, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(0, 119, 182, 0.05) 0%, transparent 50%);
  animation: pulse-core 4s infinite alternate;
  opacity: 0.6;
}

.map-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.map-link {
  display: block;
  text-decoration: none;
  transition: var(--transition);
}

.map-link:hover .map-placeholder {
  border-color: rgba(0, 180, 216, 0.5);
  box-shadow: 0 0 30px rgba(0, 180, 216, 0.2);
}

.map-pin {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0 auto 16px;
  background: var(--gradient-1);
  border-radius: 50%;
  box-shadow: var(--glow);
  animation: pin-bounce 2s infinite;
}

.map-pin i {
  font-size: 18px;
  color: #fff;
}

@keyframes pin-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.map-content p {
  font-size: 16px;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 4px;
}

.map-content small {
  font-size: 13px;
  color: var(--text-secondary);
}

.map-hint {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: var(--accent-1);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.map-link:hover .map-hint {
  border-bottom-color: var(--accent-1);
}

/* News Modal */
.news-card { cursor: pointer; }

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(7, 7, 13, 0.85);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.show {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border: var(--border-glow);
  border-radius: var(--radius);
  max-width: 720px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: 40px;
  position: relative;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 28px;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1;
}

.modal-close:hover { color: var(--accent-1); }

.modal-body { padding-top: 8px; }

.modal-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--accent-1);
  background: rgba(0, 180, 216, 0.1);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.modal-date {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.modal-body h2 {
  font-size: 22px;
  line-height: 1.4;
  margin-bottom: 20px;
}

.modal-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.modal-text p:last-child { margin-bottom: 0; }

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: var(--border-glow);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: var(--border-glow);
}

.footer-brand img { height: 36px; margin-bottom: 12px; }

.footer-brand p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 15px;
  margin-bottom: 16px;
}

.footer-links li { margin-bottom: 10px; }

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-links a:hover { color: var(--accent-1); }

.footer-contact p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-bottom p { margin: 0; }

.footer-beian {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-beian a {
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-beian a:hover { color: var(--accent-1); }

.footer-beian img {
  width: 16px;
  height: 16px;
  margin-right: 5px;
}

.footer-legal a {
  color: var(--text-secondary);
  margin-left: 24px;
  transition: var(--transition);
}

.footer-legal a:first-child { margin-left: 0; }

.footer-legal a:hover { color: var(--accent-1); }

/* Back to top */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-1);
  color: #fff;
  border: none;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
  box-shadow: var(--glow);
}

.back-top.show {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  box-shadow: var(--glow-strong);
  transform: translateY(-3px);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-text h1 { font-size: 40px; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-header h2 { font-size: 30px; }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(7, 7, 13, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: var(--border-glow);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-menu.show {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .hamburger { display: flex; }

  .hero-text h1 { font-size: 32px; }
  .hero-desc { font-size: 14px; }
  .hero-btns { flex-direction: column; }

  .product-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-tabs { flex-direction: column; }
  .tab-btn { width: 100%; }

  .scenarios-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
  .footer-legal a:first-child { margin-left: 0; }

  .stats-row { gap: 20px; }
  .stat-num { font-size: 28px; }
}

/* Selection */
::selection {
  background: rgba(0, 180, 216, 0.3);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: rgba(0, 180, 216, 0.3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 180, 216, 0.5); }