/* ===== CSS Variables - Cinematic Art ===== */
:root {
  --primary: #4a9eff;
  --primary-dark: #1a5c8a;
  --primary-glow: rgba(74, 158, 255, 0.15);
  --accent: #e8b94a;
  --accent-light: #f0d080;
  --accent-glow: rgba(232, 185, 74, 0.2);
  --bg-dark: #0a0a12;
  --bg-section: #0e0e18;
  --bg-card: #14142a;
  --bg-card-hover: #1a1a38;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --text-white: #f0f0f5;
  --text-body: #a0a0b8;
  --text-muted: #606078;
  --text-accent: #e8b94a;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(74,158,255,0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: all 0.2s ease;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font-main);
  color: var(--text-body);
  line-height: 1.8;
  background: var(--bg-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }
::selection { background: var(--accent); color: var(--bg-dark); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 120px 0; position: relative; z-index: 1; }

/* ===== Film Grain Overlay ===== */
.film-grain {
  position: fixed; inset: 0;
  z-index: 9998; pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

/* ===== Custom Cursor Glow ===== */
.cursor-glow {
  position: fixed; width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74,158,255,0.06) 0%, transparent 70%);
  pointer-events: none; z-index: 9997;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  opacity: 0;
}
.cursor-glow.visible { opacity: 1; }

/* ===== Bokeh Canvas ===== */
#bokehCanvas {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
}

/* ===== Section Headers ===== */
.section-header {
  text-align: center; margin-bottom: 72px;
  position: relative;
}
.section-num {
  display: block; font-size: 0.8rem; font-weight: 700;
  letter-spacing: 4px; color: var(--accent);
  margin-bottom: 16px; opacity: 0.7;
}
.section-title {
  font-size: 2.6rem; font-weight: 700;
  color: var(--text-white); margin-bottom: 16px;
  letter-spacing: 2px;
}
.title-line-deco {
  width: 48px; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin: 0 auto 16px;
}
.section-subtitle {
  font-size: 0.85rem; color: var(--text-muted);
  letter-spacing: 6px; text-transform: uppercase;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10,10,18,0.6);
  backdrop-filter: blur(30px); -webkit-backdrop-filter: blur(30px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(10,10,18,0.92);
  border-bottom-color: var(--border-hover);
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.2rem; font-weight: 700; color: var(--text-white);
}
.logo-svg { color: var(--accent); }
.logo-text { letter-spacing: 2px; }
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 8px 18px; font-size: 0.88rem; color: var(--text-muted);
  border-radius: 6px; font-weight: 500; transition: var(--transition-fast);
  letter-spacing: 0.5px; position: relative;
}
.nav-link:hover, .nav-link.active { color: var(--text-white); background: rgba(255,255,255,0.05); }
.nav-link.active::after {
  content: ''; position: absolute; bottom: 2px; left: 50%;
  transform: translateX(-50%); width: 16px; height: 2px;
  background: var(--accent); border-radius: 1px;
}
.nav-toggle { display: none; flex-direction: column; gap: 6px; cursor: pointer; padding: 4px; }
.nav-toggle span { width: 24px; height: 1.5px; background: var(--text-white); transition: var(--transition); border-radius: 1px; }
.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); }

/* ===== Hero ===== */
.hero {
  position: relative; width: 100%; height: 100vh;
  min-height: 640px; overflow: hidden;
  background: var(--bg-dark);
}
.carousel { width: 100%; height: 100%; position: relative; }
.carousel-slide {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity 1.2s cubic-bezier(0.4,0,0.2,1);
  z-index: 0;
}
.carousel-slide.active { opacity: 1; z-index: 1; }
.slide-bg {
  position: absolute; inset: 0; overflow: hidden;
}
.slide-bg-layer { position: absolute; inset: 0; }
.slide-light-leak {
  position: absolute; border-radius: 50%;
  filter: blur(80px); opacity: 0.3;
  animation: leakPulse 6s ease-in-out infinite alternate;
}
.leak-1 { width: 500px; height: 500px; top: -10%; right: -5%; background: rgba(74,158,255,0.2); }
.leak-2 { width: 400px; height: 400px; bottom: -10%; left: 10%; background: rgba(232,185,74,0.15); animation-delay: 2s; }
.leak-3 { width: 600px; height: 600px; top: 20%; left: -10%; background: rgba(74,158,255,0.15); }
.leak-4 { width: 450px; height: 450px; top: -5%; right: 10%; background: rgba(160,80,255,0.15); }
.leak-5 { width: 350px; height: 350px; bottom: 5%; left: 20%; background: rgba(255,100,150,0.1); animation-delay: 3s; }
.leak-6 { width: 500px; height: 500px; bottom: -15%; right: 15%; background: rgba(74,200,120,0.12); }
@keyframes leakPulse {
  0% { transform: scale(1); opacity: 0.2; }
  100% { transform: scale(1.3); opacity: 0.4; }
}

/* Carousel Content */
.carousel-content {
  position: relative; z-index: 2; text-align: center;
  color: var(--text-white); padding: 0 24px;
}
.slide-badge {
  display: inline-block; padding: 6px 20px;
  border: 1px solid rgba(232,185,74,0.3); border-radius: 50px;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 4px;
  color: var(--accent); margin-bottom: 28px;
  opacity: 0; animation: fadeInUp 0.8s 0.2s forwards;
}
.carousel-slide.active .slide-badge { opacity: 1; }
.slide-title {
  font-size: 3.8rem; font-weight: 700; margin-bottom: 20px;
  letter-spacing: 6px; line-height: 1.2;
  opacity: 0; animation: fadeInUp 0.8s 0.4s forwards;
}
.title-line { display: block; }
.title-sep { color: var(--accent); margin: 0 12px; font-weight: 300; }
.title-line.accent { color: var(--accent); }
.slide-divider {
  width: 60px; height: 2px; margin: 0 auto 20px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; animation: fadeInUp 0.8s 0.6s forwards;
}
.slide-subtitle {
  font-size: 1.2rem; color: var(--text-body); margin-bottom: 36px;
  letter-spacing: 2px; font-weight: 300;
  opacity: 0; animation: fadeInUp 0.8s 0.7s forwards;
}
.btn-cinematic {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 36px; border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px; color: var(--text-white); font-size: 0.9rem;
  font-weight: 500; letter-spacing: 2px; transition: var(--transition);
  opacity: 0; animation: fadeInUp 0.8s 0.9s forwards;
}
.btn-cinematic:hover {
  background: var(--accent); border-color: var(--accent);
  color: var(--bg-dark); transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-cinematic svg { transition: transform 0.3s ease; }
.btn-cinematic:hover svg { transform: translateX(4px); }

/* Cinema Bars */
.cinema-bars { position: absolute; inset: 0; z-index: 5; pointer-events: none; }
.cinema-bar {
  position: absolute; left: 0; right: 0; height: 48px;
  background: var(--bg-dark); opacity: 0.8;
}
.cinema-bar.top { top: 0; }
.cinema-bar.bottom { bottom: 0; }

/* Scroll Indicator */
.scroll-indicator {
  position: absolute; bottom: 80px; left: 50%;
  transform: translateX(-50%); z-index: 10;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(180deg, transparent, var(--accent));
  animation: scrollPulse 2s ease-in-out infinite;
}
.scroll-indicator span {
  font-size: 0.65rem; letter-spacing: 4px; color: var(--text-muted);
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* Carousel Controls */
.carousel-controls {
  position: absolute; bottom: 24px; right: 24px;
  z-index: 10; display: flex; align-items: center; gap: 16px;
}
.carousel-btn {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-white); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.carousel-btn:hover {
  background: rgba(255,255,255,0.1); border-color: var(--accent);
  color: var(--accent);
}
.carousel-counter {
  font-size: 0.85rem; color: var(--text-muted);
  display: flex; align-items: baseline; gap: 4px;
  font-variant-numeric: tabular-nums;
}
.counter-current { color: var(--text-white); font-weight: 700; font-size: 1.1rem; }
.counter-sep { color: var(--text-muted); }
.counter-total { color: var(--text-muted); }

/* Carousel Progress */
.carousel-progress {
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 3px; z-index: 10; background: rgba(255,255,255,0.05);
}
.progress-bar {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  transition: width 0.1s linear;
}

/* ===== About Section ===== */
.about { background: var(--bg-section); }
.about-content {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: start;
}
.about-text { position: relative; }
.about-lead {
  font-size: 1.35rem; color: var(--text-white); line-height: 1.9;
  font-weight: 500; margin-bottom: 0;
}
.about-lead strong { color: var(--accent); }
.about-divider {
  width: 40px; height: 2px; margin: 28px 0;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.about-text p {
  margin-bottom: 16px; font-size: 1rem; line-height: 2;
  color: var(--text-body);
}
.about-visual {}
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 32px; }
.stat-item {
  padding: 28px 24px; background: var(--bg-card);
  border-radius: var(--radius-sm); border: 1px solid var(--border);
  transition: var(--transition); position: relative; overflow: hidden;
}
.stat-item::before {
  content: ''; position: absolute; top: 0; left: 0; width: 2px; height: 0;
  background: var(--accent); transition: height 0.5s ease;
}
.stat-item:hover::before { height: 100%; }
.stat-item:hover { background: var(--bg-card-hover); border-color: var(--border-hover); transform: translateY(-3px); }
.stat-value { margin-bottom: 8px; }
.stat-number {
  font-size: 2.8rem; font-weight: 800; color: var(--text-white);
  line-height: 1; display: inline;
}
.stat-unit { font-size: 1.2rem; font-weight: 700; color: var(--accent); display: inline; }
.stat-label { font-size: 0.85rem; color: var(--text-muted); letter-spacing: 1px; }
.stat-line {
  margin-top: 12px; width: 32px; height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.about-quote {
  padding: 24px; background: var(--bg-card);
  border-radius: var(--radius-sm); border: 1px solid var(--border);
  position: relative;
}
.about-quote p {
  font-size: 1.1rem; color: var(--accent); font-weight: 600;
  letter-spacing: 4px;
}
.quote-mark { position: absolute; top: 12px; left: 16px; color: var(--accent); }

/* ===== Business Section ===== */
.business { background: var(--bg-dark); }
.business-tabs {
  display: flex; justify-content: center; gap: 12px; margin-bottom: 56px;
}
.tab-btn {
  padding: 12px 32px; background: transparent;
  border: 1px solid var(--border); border-radius: 50px;
  font-size: 0.95rem; font-weight: 600; color: var(--text-muted);
  cursor: pointer; transition: var(--transition);
  display: flex; align-items: center; gap: 8px;
}
.tab-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text-muted); transition: var(--transition);
}
.tab-btn:hover { border-color: var(--accent); color: var(--text-body); }
.tab-btn.active {
  background: var(--accent); border-color: var(--accent);
  color: var(--bg-dark);
}
.tab-btn.active .tab-dot { background: var(--bg-dark); }
.business-panel { display: none; animation: fadeIn 0.6s ease; }
.business-panel.active { display: block; }
.panel-intro {
  text-align: center; margin-bottom: 56px;
  max-width: 760px; margin-left: auto; margin-right: auto;
}
.panel-intro h3 {
  font-size: 1.5rem; color: var(--text-white); margin-bottom: 16px;
  font-weight: 600; letter-spacing: 1px;
}
.panel-intro p { color: var(--text-body); line-height: 2; }
.panel-services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card {
  background: var(--bg-card); padding: 32px 24px;
  border-radius: var(--radius); border: 1px solid var(--border);
  transition: var(--transition); position: relative; overflow: hidden;
}
.service-card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 2px; background: linear-gradient(90deg, var(--accent), var(--primary));
  transform: scaleX(0); transition: transform 0.4s ease; transform-origin: left;
}
.service-card:hover { background: var(--bg-card-hover); border-color: var(--border-hover); transform: translateY(-4px); box-shadow: var(--shadow-card); }
.service-card:hover::after { transform: scaleX(1); }
.service-num {
  font-size: 0.7rem; font-weight: 700; color: var(--accent);
  letter-spacing: 2px; margin-bottom: 16px; opacity: 0.5;
}
.service-icon-wrap {
  width: 52px; height: 52px; border-radius: 12px;
  background: rgba(74,158,255,0.06); display: flex;
  align-items: center; justify-content: center;
  margin-bottom: 16px; color: var(--primary); transition: var(--transition);
}
.service-card:hover .service-icon-wrap { background: var(--accent-glow); color: var(--accent); }
.service-card h4 { font-size: 1.05rem; color: var(--text-white); margin-bottom: 10px; font-weight: 600; }
.service-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }

/* ===== Cases Section ===== */
.cases { background: var(--bg-section); }
.cases-filter {
  display: flex; justify-content: center; gap: 8px; margin-bottom: 56px;
}
.filter-btn {
  padding: 8px 24px; background: transparent;
  border: 1px solid var(--border); border-radius: 50px;
  font-size: 0.88rem; color: var(--text-muted); cursor: pointer;
  transition: var(--transition); font-weight: 500;
}
.filter-btn:hover { border-color: var(--accent); color: var(--text-body); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: var(--bg-dark); }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  background: var(--bg-card); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
  transition: var(--transition); position: relative;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); border-color: var(--border-hover); }
.case-card.hidden { display: none; }
.case-visual {
  height: 200px; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.case-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.6) 100%);
}
.case-icon-wrap { color: rgba(255,255,255,0.3); transition: var(--transition); }
.case-card:hover .case-icon-wrap { color: rgba(255,255,255,0.6); transform: scale(1.1); }
.case-badge {
  position: absolute; top: 12px; left: 12px;
  padding: 3px 12px; border-radius: 4px;
  font-size: 0.65rem; font-weight: 700; letter-spacing: 2px;
  background: rgba(232,185,74,0.15); color: var(--accent);
  border: 1px solid rgba(232,185,74,0.2);
}
.case-hover-line {
  position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: var(--accent); transform: scaleX(0);
  transition: transform 0.4s ease; transform-origin: left;
}
.case-card:hover .case-hover-line { transform: scaleX(1); }
.case-info { padding: 24px; }
.case-cat {
  font-size: 0.72rem; font-weight: 600; letter-spacing: 2px;
  color: var(--accent); margin-bottom: 8px; display: block;
}
.case-info h4 {
  font-size: 1.1rem; color: var(--text-white); margin-bottom: 14px;
  font-weight: 600;
}
.case-detail p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px; line-height: 1.7; }
.case-detail strong { color: var(--text-body); }

/* ===== Advantages Section ===== */
.advantages {
  background: var(--bg-dark); overflow: hidden;
}
.advantages-bg-mesh {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(74,158,255,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 30%, rgba(232,185,74,0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(160,80,255,0.03) 0%, transparent 50%);
}
.advantages .section-title { color: var(--text-white); }
.advantages-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; z-index: 1; }
.advantage-card {
  padding: 32px 20px; background: var(--bg-card);
  border-radius: var(--radius); border: 1px solid var(--border);
  transition: var(--transition); position: relative; overflow: hidden;
}
.advantage-card:hover {
  background: var(--bg-card-hover); border-color: var(--border-hover);
  transform: translateY(-4px); box-shadow: var(--shadow-card);
}
.advantage-num {
  font-size: 2rem; font-weight: 800; color: rgba(255,255,255,0.04);
  margin-bottom: 12px; line-height: 1;
}
.advantage-card h4 {
  font-size: 1.05rem; color: var(--text-white); margin-bottom: 8px; font-weight: 600;
}
.adv-line {
  width: 24px; height: 2px; margin-bottom: 14px;
  background: var(--accent); border-radius: 1px;
}
.advantage-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; }

/* ===== Contact Section ===== */
.contact { background: var(--bg-section); }
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  align-items: stretch;
}
.contact-info {
  display: contents;
}
.contact-item {
  display: flex; flex-direction: column; gap: 8px; padding: 28px 24px;
  background: var(--bg-card); border-radius: var(--radius-sm);
  border: 1px solid var(--border); transition: var(--transition);
  text-align: center; align-items: center;
}
.contact-item:hover { border-color: var(--border-hover); transform: translateY(-4px); box-shadow: var(--shadow-card); }
.contact-icon-wrap {
  width: 52px; height: 52px; flex-shrink: 0;
  border-radius: 12px; background: rgba(74,158,255,0.06);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); transition: var(--transition);
  margin-bottom: 4px;
}
.contact-item:hover .contact-icon-wrap { background: var(--accent-glow); color: var(--accent); }
.contact-detail h4 { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 2px; font-weight: 500; }
.contact-detail p { font-size: 1.1rem; color: var(--text-white); font-weight: 600; }
.contact-note { font-size: 0.8rem; color: var(--text-muted); font-weight: 400; }
/* ===== Footer ===== */
.footer {
  background: #060610; color: var(--text-muted);
  padding: 60px 0 0; position: relative; z-index: 1;
  border-top: 1px solid var(--border);
}
.footer-content {
  display: grid; grid-template-columns: 1fr 2fr;
  gap: 60px; padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
.footer-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.15rem; font-weight: 700; color: var(--text-white);
  margin-bottom: 16px;
}
.footer-desc { font-size: 0.9rem; line-height: 1.8; margin-bottom: 24px; color: var(--text-muted); }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-col h4 {
  color: var(--text-white); font-size: 0.9rem; margin-bottom: 20px;
  padding-bottom: 10px; position: relative;
  letter-spacing: 1px;
}
.footer-col h4::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 24px; height: 1px; background: var(--accent);
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a, .footer-col ul li {
  font-size: 0.85rem; color: var(--text-muted); transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0;
}
.footer-copyright p { font-size: 0.8rem; color: var(--text-muted); opacity: 0.5; }
.footer-icp { margin-top: 4px; }
.footer-legal { display: flex; gap: 24px; }
.footer-legal a { font-size: 0.8rem; color: var(--text-muted); opacity: 0.5; }
.footer-legal a:hover { color: var(--accent); opacity: 1; }

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed; bottom: 30px; right: 30px;
  width: 48px; height: 48px;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-white); border-radius: 50%;
  cursor: pointer; z-index: 999; opacity: 0; visibility: hidden;
  transition: var(--transition); display: flex;
  align-items: center; justify-content: center;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--accent); color: var(--bg-dark); border-color: var(--accent); transform: translateY(-3px); }

/* ===== Animations ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.animate-on-scroll {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.animate-on-scroll.animated { opacity: 1; transform: translateY(0); }
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 80px 0; }
  .section-title { font-size: 2rem; }
  .slide-title { font-size: 2.8rem; }
  .about-content { grid-template-columns: 1fr; gap: 40px; }
  .panel-services { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-content { grid-template-columns: 1fr 1fr; }
  .footer-content { grid-template-columns: 1fr; gap: 40px; }
  .footer-links { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .nav-menu {
    position: fixed; top: 72px; left: 0; right: 0;
    background: rgba(10,10,18,0.98); backdrop-filter: blur(20px);
    flex-direction: column; padding: 20px; gap: 4px;
    transform: translateY(-100%); opacity: 0; visibility: hidden;
    transition: var(--transition); border-bottom: 1px solid var(--border);
  }
  .nav-menu.active { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-toggle { display: flex; }
  .hero { min-height: 500px; }
  .slide-title { font-size: 2rem; letter-spacing: 3px; }
  .slide-subtitle { font-size: 0.95rem; }
  .cinema-bar { height: 28px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 1.6rem; }
  .about-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-number { font-size: 2rem; }
  .business-tabs { flex-direction: column; align-items: center; }
  .panel-services { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: 1fr 1fr; }
  .contact-content { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .footer-legal { flex-wrap: wrap; justify-content: center; }
  .carousel-controls { right: 16px; bottom: 16px; }
  .scroll-indicator { display: none; }
}
@media (max-width: 480px) {
  .slide-title { font-size: 1.6rem; }
  .slide-subtitle { font-size: 0.85rem; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .stat-number { font-size: 1.6rem; }
  .advantages-grid { grid-template-columns: 1fr; }
}