:root {
  --bg-primary: #0a0a0f;
  --bg-section: #0d0d14;
  --gradient-start: #00d4ff;
  --gradient-end: #0066ff;
  --text-primary: #ffffff;
  --text-secondary: #b0b0c0;
  --text-muted: #666680;
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-border: rgba(255, 255, 255, 0.08);
  --navbar-height: 70px;
  --glow-color: rgba(0, 212, 255, 0.15);
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  background: rgba(10, 10, 15, 0.6);
  backdrop-filter: blur(0px);
  transition: backdrop-filter 0.3s, background 0.3s;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
}

.navbar-logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.navbar-logo .gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.navbar-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.navbar-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s;
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--gradient-start);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 6px;
  cursor: pointer;
  padding: 6px;
  transition: border-color 0.3s;
  position: relative;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--gradient-start);
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-toggle:hover {
  border-color: rgba(0, 212, 255, 0.6);
}

.section-business {
  min-height: 100vh;
  padding: 100px 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.section-illustration {
  position: absolute;
  right: 40px;
  top: 50%;
  transform: translateY(-50%);
  width: 200px;
  height: 200px;
  opacity: 0.15;
  pointer-events: none;
}

.section-title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
}

.section-title .gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin-top: 40px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 28px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 8px 30px var(--glow-color);
}

.card-icon {
  margin-bottom: 12px;
}

.icon-svg {
  width: 24px;
  height: 24px;
  margin-bottom: 8px;
}

.icon-svg-inline {
  width: 16px;
  height: 16px;
  vertical-align: middle;
  margin-right: 6px;
}

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

.card-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

.service-block {
  margin-top: 24px;
}

.service-block-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--gradient-start);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-block-agent {
  margin-top: 0px;
}

.service-block-agent-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--gradient-start);
  margin-bottom: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-list-compact {
  list-style: none;
}

.service-list-compact li {
  padding: 22px 0 22px 0;
  border-bottom: 1px solid var(--card-border);
  color: var(--text-secondary);
  font-size: 16px;
  display: flex;
  align-items: center;
}

.service-list-compact li:last-child {
  border-bottom: none;
}

.card-compact {
  padding: 20px;
}

.card-compact .card-title {
  font-size: 16px;
}

.card-compact .card-desc {
  font-size: 13px;
}

.card-compact .icon-svg {
  width: 20px;
  height: 20px;
}

.choice-card svg {
  width: 20px;
  height: 20px;
  margin-bottom: 4px;
}

.footer {
  background: rgba(10, 10, 15, 0.95);
  border-top: 1px solid var(--card-border);
  padding: 40px 60px;
  text-align: center;
  color: var(--text-muted);
}

.footer-brand {
  font-size: 20px;
  margin-bottom: 20px;
}

.footer-contact {
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 2;
}

.footer-copyright {
  margin-top: 20px;
  font-size: 13px;
}

.footer-copyright a{
  text-decoration: none;
  color: var(--text-muted);
}

.footer-copyright a:hover{
  text-decoration: none;
  color: var(--text-muted);
}

.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-carousel {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
}

.carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.carousel-slide.active {
  opacity: 1;
}

.slide-illustrations-left {
  position: absolute;
  left: 5%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 24px;
  z-index: 0;
}

.slide-illustrations-left img:nth-child(1) {
  width: 220px;
  height: 220px;
  opacity: 0.25;
}

.slide-illustrations-left img:nth-child(2) {
  width: 160px;
  height: 160px;
  opacity: 0.15;
  margin-left: 60px;
}

.slide-illustrations-right {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 24px;
  z-index: 0;
}

.slide-illustrations-right img:nth-child(1) {
  width: 240px;
  height: 240px;
  opacity: 0.35;
}

.slide-illustrations-right img:nth-child(2) {
  width: 160px;
  height: 160px;
  opacity: 0.2;
  margin-left: -60px;
}

.slide-content {
  text-align: center;
  max-width: 700px;
}

.slide-title {
  font-size: 64px;
  font-weight: 700;
  margin-bottom: 20px;
}

.slide-subtitle {
  font-size: 22px;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.slide-btn {
  display: inline-block;
  padding: 14px 36px;
  border: 1px solid var(--gradient-start);
  border-radius: 8px;
  color: var(--gradient-start);
  text-decoration: none;
  font-size: 16px;
  transition: background 0.3s, color 0.3s, box-shadow 0.3s;
}

.slide-btn:hover {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  box-shadow: 0 4px 20px var(--glow-color);
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  z-index: 2;
  transition: background 0.3s;
}

.carousel-arrow:hover {
  background: rgba(255, 255, 255, 0.2);
}

.carousel-arrow-left { left: 24px; }
.carousel-arrow-right { right: 24px; }

.carousel-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 2;
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: background 0.3s;
}

.indicator.active {
  background: var(--gradient-start);
  box-shadow: 0 0 10px var(--glow-color);
}

.about {
  min-height: 100vh;
  padding: 100px 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-section);
}

.about-content {
  text-align: center;
  margin-bottom: 48px;
}

.about-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-top: 12px;
}

.about-cards .card {
  text-decoration: none;
  cursor: pointer;
}

.privacy-badge {
  font-size: 16px;
  color: var(--gradient-start);
  margin-bottom: 16px;
  padding: 8px 20px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 6px;
  background: rgba(0, 212, 255, 0.05);
  display: flex;
  align-items: center;
  gap: 6px;
}

.section-layout {
  display: flex;
  gap: 32px;
  width: 100%;
  max-width: 1200px;
  margin-top: 24px;
  align-items: stretch;
}

.section-layout-left {
  flex: 1.1;
}

.section-layout-right {
  flex: 0.9;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.card-grid-small {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.value-tags {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.value-tag {
  padding: 6px 16px;
  border-radius: 4px;
  background: rgba(0, 212, 255, 0.08);
  color: var(--gradient-start);
  font-size: 14px;
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.service-list {
  list-style: none;
  margin-top: 40px;
  max-width: 800px;
  width: 100%;
}

.service-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--card-border);
  color: var(--text-secondary);
  font-size: 15px;
}

.service-list li:last-child {
  border-bottom: none;
}

.service-icon {
  margin-right: 8px;
}

.trust-badge {
  margin-top: 32px;
  font-size: 20px;
  color: var(--text-secondary);
  text-align: center;
}

.service-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.flow-step {
  padding: 10px 20px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
  white-space: nowrap;
}

.flow-arrow {
  color: var(--gradient-start);
  font-size: 20px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-top: 8px;
  text-align: left;
}

.agent-services {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.agent-service-item {
  padding: 16px 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.privacy-options {
  margin-top: 24px;
  text-align: center;
}

.privacy-choice {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  justify-content: center;
}

.choice-card {
  padding: 20px 32px;
  background: var(--card-bg);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 10px;
  text-align: center;
}

.choice-card strong {
  color: var(--gradient-start);
  font-size: 18px;
  display: block;
  margin-bottom: 8px;
}

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

.contact-float {
  position: fixed;
  right: 40px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1000;
  width: 80px;
  height: 200px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(0, 102, 255, 0.12));
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 12px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  cursor: pointer;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.08);
  animation: breathHeight 3s ease-in-out infinite;
}

@keyframes breathHeight {
  0%, 100% { height: 180px; }
  33% { height: 210px; }
  66% { height: 195px; }
}

.contact-float:hover {
  border-color: rgba(0, 212, 255, 0.5);
  box-shadow: 0 0 32px rgba(0, 212, 255, 0.15);
}

.contact-float.expanded {
  width: 200px;
  height: 280px;
  animation: none;
  cursor: default;
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.18);
}

.contact-float-toggle {
  position: absolute;
  inset: 0;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--gradient-start);
  padding: 0;
  transition: opacity 0.3s;
  font-family: inherit;
}

.contact-float-icon {
  width: 24px;
  height: 24px;
  opacity: 0.8;
}

.contact-float-text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 6px;
  font-size: 14px;
  opacity: 0.9;
}

.contact-float.expanded .contact-float-toggle {
  opacity: 0;
  pointer-events: none;
}

.contact-float-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.4s 0.1s;
  padding: 16px;
  gap: 6px;
}

.contact-float.expanded .contact-float-content {
  opacity: 1;
}

.contact-qr {
  width: 150px;
  height: 150px;
  border-radius: 8px;
  background: #0a0a1a;
}

.contact-qr-label {
  color: var(--gradient-start);
  font-size: 14px;
  font-weight: 600;
  margin: 0;
}

.contact-qr-desc {
  color: var(--text-secondary);
  font-size: 12px;
  margin: 0;
}

@media (max-width: 1024px) {
  .navbar { padding: 0 20px; }
  .navbar-links { gap: 16px; }
  .navbar-links a { font-size: 13px; }
  .contact-float { right: 16px; width: 60px; }
  .contact-float.expanded { width: 180px; }
  .contact-float-text { font-size: 12px; }
  .contact-qr { width: 120px; height: 120px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .section-business { padding: 80px 24px; }
  .section-title { font-size: 32px; }
  .slide-title { font-size: 40px; }
  .slide-subtitle { font-size: 18px; }
  .slide-btn { padding: 10px 24px; font-size: 14px; }
  .carousel-arrow { width: 40px; height: 40px; font-size: 20px; }
  .carousel-arrow-left { left: 12px; }
  .carousel-arrow-right { right: 12px; }
  .slide-illustrations-left img:nth-child(1) { width: 120px; height: 120px; opacity: 0.2; }
  .slide-illustrations-left img:nth-child(2) { width: 80px; height: 80px; opacity: 0.12; margin-left: 30px; }
  .slide-illustrations-right img:nth-child(1) { width: 140px; height: 140px; opacity: 0.25; }
  .slide-illustrations-right img:nth-child(2) { width: 80px; height: 80px; opacity: 0.15; margin-left: -30px; }
  .section-illustration { display: none; }
  .section-layout { flex-direction: column; }
  .section-layout-left, .section-layout-right { flex: 1; }
  .card-grid-small { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .navbar { padding: 0 16px; }

  .navbar-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: rgba(10, 10, 15, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid rgba(0, 212, 255, 0.15);
    padding: 80px 32px 32px;
    gap: 4px;
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
  }

  .navbar-links.active {
    right: 0;
  }

  .navbar-links a {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .navbar-links a:hover,
  .navbar-links a.active {
    color: var(--gradient-start);
  }

  .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);
  }
}