/* ===== CSS Variables & Reset ===== */
:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #0f0f2a;
  --bg-card: rgba(15, 15, 42, 0.6);
  --accent-cyan: #00d4ff;
  --accent-blue: #0066ff;
  --accent-purple: #7b2fff;
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0c0;
  --text-muted: #606080;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(0, 212, 255, 0.15);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font-display: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-cyan) var(--bg-primary);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-cyan); border-radius: 3px; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== Particle Canvas ===== */
#particle-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ===== Navigation ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.35s ease;
}

#navbar.scrolled {
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 0;
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
}

.nav-menu {
  display: flex;
  gap: 36px;
}

.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  transition: color 0.3s;
  padding: 6px 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--accent-cyan);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.nav-menu a:hover { color: var(--text-primary); }
.nav-menu a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 26px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

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

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0; right: -100%;
    width: 280px; height: 100vh;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(30px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    transition: right 0.4s ease;
  }
  .nav-menu.active { right: 0; }
  .nav-toggle { display: flex; z-index: 1001; }
}

/* ===== Hero Section ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 120px 40px 80px;
}

.hero-content {
  max-width: 720px;
  text-align: center;
  z-index: 2;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  margin-bottom: 32px;
  animation: fadeInUp 0.8s ease backwards;
}

.badge-dot {
  width: 6px; height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  margin-bottom: 28px;
  animation: fadeInUp 0.8s 0.1s ease backwards;
}

.title-line {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 700;
  background: linear-gradient(135deg, #fff 0%, #a0d8ef 40%, var(--accent-cyan) 70%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
  letter-spacing: 4px;
}

.title-sub {
  display: block;
  font-size: clamp(18px, 3vw, 28px);
  font-weight: 300;
  color: var(--text-secondary);
  margin-top: 12px;
  letter-spacing: 3px;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s 0.2s ease backwards;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s 0.3s ease backwards;
}

.btn-primary, .btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-body);
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #fff;
  border: none;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-glow);
}

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero Visual */
.hero-visual {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.orb {
  position: absolute;
  top: 15%; left: 10%;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
  filter: blur(60px);
  animation: float-slow 12s ease-in-out infinite;
}

.orb-small {
  position: absolute;
  bottom: 20%; right: 8%;
  width: 350px; height: 350px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123, 47, 255, 0.05) 0%, transparent 70%);
  filter: blur(50px);
  animation: float-slow 10s ease-in-out infinite reverse;
}

@keyframes float-slow {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -30px); }
  66% { transform: translate(-20px, 20px); }
}

.grid-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 70%);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 2;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 2px;
  animation: fadeInUp 0.8s 0.6s ease backwards;
}

.scroll-mouse {
  width: 24px; height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-wheel {
  width: 3px; height: 8px;
  background: var(--accent-cyan);
  border-radius: 2px;
  animation: scroll-wheel 1.8s ease infinite;
}

@keyframes scroll-wheel {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ===== Section Common ===== */
section {
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(180deg, #fff, #c0c0e0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
}

/* ===== About Section ===== */
.about-section {
  padding: 120px 40px;
  max-width: 1280px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

.about-card {
  padding: 36px 28px;
  text-align: center;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.about-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.1) inset;
}

.about-card .card-icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.15);
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.about-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== Glass Card ===== */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--glass-shadow);
}

/* ===== Services Section ===== */
.services-section {
  padding: 120px 40px;
  max-width: 1280px;
  margin: 0 auto;
}

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

@media (max-width: 1000px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .services-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
}

.service-card {
  position: relative;
  padding: 36px 28px;
  background: rgba(15, 15, 42, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all 0.4s ease;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.service-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.service-card:hover::before { opacity: 1; }

.service-visual {
  position: relative;
  width: 64px; height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent-cyan);
}

.service-glow {
  position: absolute;
  inset: -4px;
  border-radius: 14px;
  background: rgba(0, 212, 255, 0.05);
  filter: blur(8px);
  transition: all 0.4s ease;
}

.service-card:hover .service-glow {
  background: rgba(0, 212, 255, 0.12);
  filter: blur(16px);
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tags li {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 50px;
  background: rgba(0, 212, 255, 0.06);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.1);
}

/* ===== Advantages Section ===== */
.advantages-section {
  padding: 120px 40px;
  max-width: 1280px;
  margin: 0 auto;
}

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

@media (max-width: 900px) {
  .advantages-content { grid-template-columns: 1fr; }
}

.advantage-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hex-grid {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  gap: 16px;
  justify-content: center;
}

@media (max-width: 500px) {
  .hex-grid {
    grid-template-columns: repeat(3, 80px);
    gap: 10px;
  }
}

.hex-item {
  width: 100px; height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 255, 0.04);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: 20px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-cyan);
  transition: all 0.35s ease;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

@media (max-width: 500px) {
  .hex-item { width: 80px; height: 80px; font-size: 11px; }
}

.hex-item:hover {
  background: rgba(0, 212, 255, 0.15);
  border-color: var(--accent-cyan);
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.hex-item:nth-child(7) { grid-column: 2; }

.advantage-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.advantage-item {
  display: flex;
  gap: 24px;
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.advantage-item:hover {
  border-color: var(--border-glow);
  background: rgba(0, 212, 255, 0.02);
}

.adv-num {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: rgba(0, 212, 255, 0.3);
  line-height: 1;
  flex-shrink: 0;
  width: 50px;
}

.adv-text h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.adv-text p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Stats Section ===== */
.stats-section {
  padding: 80px 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 48px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.03), rgba(123, 47, 255, 0.03));
  border: 1px solid var(--border-subtle);
}

@media (max-width: 700px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

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

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 2px;
}

/* ===== Contact Section ===== */
.contact-section {
  padding: 120px 40px 80px;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
}

@media (max-width: 700px) {
  .contact-grid { grid-template-columns: 1fr; }
}

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

.contact-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.contact-item:hover {
  border-color: var(--border-glow);
  background: rgba(0, 212, 255, 0.02);
}

.contact-item svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item h4 {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact-item p {
  font-size: 16px;
  color: var(--text-primary);
}

.contact-qr {
  padding: 32px;
  text-align: center;
}

.contact-qr .qr-placeholder {
  margin-bottom: 12px;
  display: flex;
  justify-content: center;
}

.contact-qr p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== Footer ===== */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border-subtle);
  background: rgba(10, 10, 26, 0.8);
  backdrop-filter: blur(10px);
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 40px 32px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
}

@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

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

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-col a, .footer-col p {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  transition: color 0.3s;
}

.footer-col a:hover { color: var(--accent-cyan); }

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 40px;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .hero-section { padding: 100px 20px 60px; }
  .about-section, .services-section, .advantages-section, .contact-section {
    padding: 80px 20px;
  }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .section-header { margin-bottom: 40px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}