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

body {
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: #e5e7eb;
  color: #1f2937;
}

.navbar {
  width: 100%;
  height: 76px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid #e5e7eb;
  background-color: transparent;
}

.navbar-inner {
  width: min(100%, 1120px);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 10px;
}

.brand-name {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: 32px;
}

.nav-link {
  color: #1f2937;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
}

.nav-link:hover {
  color: #2563eb;
}

.language-toggle {
  margin-left: 20px;
  padding: 8px 12px;
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  color: #111827;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease, background-color 0.24s ease;
}

.language-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(37, 99, 235, 0.25);
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.82);
}

.language-toggle-option {
  color: #64748b;
  transition: color 0.24s ease;
}

.language-toggle-option.is-active {
  color: #111827;
}

.language-toggle-divider {
  color: #94a3b8;
}

.hero-section {
  min-height: calc(100vh - 76px);
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 48px 0 72px;
  background-color: #e5e7eb;
  overflow: hidden;
}

.hero-inner {
  width: min(100%, 1120px);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  position: relative;
  z-index: 1;
}

.hero-visual {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 88% 42%, rgba(59, 130, 246, 0.18), transparent 28%),
    radial-gradient(circle at 78% 56%, rgba(96, 165, 250, 0.12), transparent 24%),
    radial-gradient(circle at 82% 76%, rgba(99, 102, 241, 0.12), transparent 30%);
}

.hero-content {
  position: relative;
  width: 100%;
  max-width: 560px;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-canvas {
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.92;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 520px;
  margin-right: auto;
  padding-left: 12px;
}

.hero-title {
  font-size: 52px;
  line-height: 1.2;
  font-weight: 700;
  color: #111827;
  margin-bottom: 20px;
  text-shadow: 0 10px 30px rgba(229, 231, 235, 0.55);
}

.hero-title span {
  display: block;
}

.hero-description {
  font-size: 18px;
  line-height: 1.9;
  color: #4b5563;
  text-shadow: 0 8px 24px rgba(229, 231, 235, 0.45);
}

.services-section {
  display: flex;
  justify-content: center;
  padding: 32px 0 88px;
  background-color: #e5e7eb;
}

.services-inner {
  width: min(100%, 1120px);
  padding: 0 32px;
}

.services-title {
  font-size: 42px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 28px;
  text-align: center;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 24px;
}

.service-card {
  min-height: 260px;
  position: relative;
  perspective: 1000px;
  grid-column: span 2;
}

.service-card-inner {
  position: relative;
  min-height: 260px;
  width: 100%;
  transform-style: preserve-3d;
  transition: transform 0.7s ease;
  will-change: transform;
}

.service-card--flip:hover .service-card-inner {
  transform: rotateY(180deg);
}

.service-card-face {
  position: absolute;
  inset: 0;
  padding: 28px 24px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.55);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.05);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.service-card-front {
  transform: rotateY(0deg);
}

.service-card-back {
  transform: rotateY(180deg);
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.12s ease, visibility 0s linear 0.7s;
}

.service-card--flip:hover .service-card-back {
  opacity: 1;
  visibility: visible;
  transition-delay: 0.34s, 0.34s;
}

.service-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-list li {
  font-size: 16px;
  line-height: 1.65;
  color: #374151;
}

.service-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 18px;
  color: #111827;
}

.service-card-title {
  font-size: 25px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 14px;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

.service-card-text {
  font-size: 16px;
  line-height: 1.8;
  color: #4b5563;
}

.advantages-section {
  display: flex;
  justify-content: center;
  padding: 24px 0 108px;
  background-color: #e5e7eb;
  overflow: hidden;
}

.advantages-inner {
  width: min(100%, 1120px);
  padding: 0 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: 48px;
}

.advantages-visual {
  position: relative;
  min-height: 620px;
  overflow: hidden;
}

.advantages-shape {
  position: absolute;
  left: -24px;
  top: 50%;
  width: 640px;
  height: 640px;
  transform: translateY(-50%);
  z-index: 0;
  opacity: 0.9;
  pointer-events: none;
}

.advantages-globe {
  position: absolute;
  left: 0;
  top: 50%;
  width: 600px;
  height: 600px;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 1;
}

.advantages-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.orbit-logo {
  position: absolute;
  left: 0;
  top: 0;
  width: 68px;
  height: 68px;
  padding: 12px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  transform-origin: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.orbit-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

.advantages-copy {
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.advantages-copy-inner {
  width: 100%;
  max-width: 460px;
}

.advantages-title {
  font-size: 42px;
  line-height: 1.2;
  font-weight: 800;
  font-style: italic;
  letter-spacing: 0.4px;
  color: #111827;
  margin-bottom: 24px;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

.advantages-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.advantages-tab {
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(255, 255, 255, 0.72);
  color: #374151;
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.24s ease;
}

.advantages-tab:hover,
.advantages-tab:focus-visible,
.advantages-tab.is-active {
  background: #111827;
  color: #ffffff;
  border-color: #111827;
  outline: none;
}

.advantages-panel-wrap {
  position: relative;
  min-height: 180px;
}

.advantages-panel {
  display: none;
  padding: 28px 28px 30px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(148, 163, 184, 0.24);
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.advantages-panel.is-active {
  display: block;
}

.advantages-panel-title {
  font-size: 22px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 14px;
}

.advantages-panel-text {
  font-size: 16px;
  line-height: 1.9;
  color: #4b5563;
}

.contact-section {
  display: flex;
  justify-content: center;
  width: 100%;
  padding: 0;
  background: linear-gradient(180deg, rgba(229, 231, 235, 0.55) 0%, #d9dde4 100%);
  border-top: 1px solid rgba(148, 163, 184, 0.18);
}

.contact-inner {
  width: 100%;
  max-width: 1280px;
  padding: 38px 40px 42px;
  display: block;
}

.contact-strip {
  display: grid;
  grid-template-columns: minmax(280px, 1.4fr) minmax(140px, 0.8fr) minmax(140px, 0.8fr) minmax(200px, 1fr);
  gap: 32px;
  align-items: start;
}

.contact-copy {
  padding-right: 24px;
}

.contact-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
  margin-bottom: 18px;
}

.contact-brand-logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  object-fit: cover;
  flex-shrink: 0;
}

.contact-brand-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-brand-name {
  font-size: 25px;
  font-weight: 800;
  color: #111827;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

.contact-brand-subtitle {
  font-size: 15px;
  color: #6b7280;
}

.contact-title {
  font-size: 22px;
  line-height: 1.3;
  font-weight: 700;
  color: #111827;
  margin-bottom: 18px;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

.contact-description {
  font-size: 15px;
  line-height: 1.8;
  color: #6b7280;
  margin-bottom: 0;
}

.contact-column {
  min-width: 0;
}

.contact-column-title {
  font-size: 18px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 18px;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

.contact-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-link {
  color: #4b5563;
  text-decoration: none;
  font-size: 15px;
  line-height: 1.6;
  transition: color 0.24s ease;
}

.contact-link:hover {
  color: #111827;
}

.contact-contact-text {
  font-size: 15px;
  line-height: 1.8;
  color: #4b5563;
  margin-bottom: 18px;
}

.contact-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 172px;
  padding: 14px 22px;
  border-radius: 999px;
  background: #111827;
  color: #ffffff;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 14px 24px rgba(15, 23, 42, 0.12);
  transition: transform 0.24s ease, box-shadow 0.24s ease, background-color 0.24s ease;
}

.contact-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 28px rgba(15, 23, 42, 0.16);
  background: #0f172a;
}

.contact-bottom {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(148, 163, 184, 0.18);
  font-size: 13px;
  color: #6b7280;
}

.floating-contact {
  position: fixed;
  top: 50%;
  right: 22px;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.floating-contact-item {
  width: 88px;
  min-height: 88px;
  padding: 14px 10px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  color: #111827;
  cursor: pointer;
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.floating-contact-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 40px rgba(15, 23, 42, 0.16);
  border-color: rgba(37, 99, 235, 0.22);
}

.floating-contact-item--wechat {
  font: inherit;
}

.floating-contact-icon {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.floating-contact-text {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
}

.wechat-popup {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.32);
}

.wechat-popup[hidden] {
  display: none;
}

.wechat-popup-card {
  position: relative;
  width: min(100%, 360px);
  padding: 32px 24px 24px;
  border-radius: 24px;
  background: #ffffff;
  box-shadow: 0 28px 64px rgba(15, 23, 42, 0.18);
  text-align: center;
}

.wechat-popup-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 50%;
  background: #eef2ff;
  color: #334155;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.wechat-popup-label {
  margin-bottom: 12px;
  font-size: 16px;
  font-weight: 700;
  color: #475569;
}

.wechat-popup-id {
  margin-bottom: 12px;
  font-size: 24px;
  font-weight: 800;
  color: #111827;
  word-break: break-word;
}

.wechat-popup-tip {
  font-size: 14px;
  line-height: 1.7;
  color: #64748b;
}

.service-card:nth-child(4) {
  grid-column: 2 / span 2;
}

.service-card:nth-child(5) {
  grid-column: 4 / span 2;
}

@media (max-width: 900px) {
  .hero-content {
    max-width: 100%;
    min-height: 380px;
  }

  .hero-copy {
    padding-left: 0;
    padding-right: 0;
  }

  .hero-title {
    font-size: 40px;
  }

  .services-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .advantages-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .contact-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .floating-contact {
    right: 18px;
  }

  .floating-contact-item {
    width: 76px;
    min-height: 76px;
    border-radius: 20px;
  }

  .advantages-visual {
    min-height: 540px;
  }

  .advantages-shape {
    left: 50%;
    width: min(100%, 540px);
    height: min(100%, 540px);
    transform: translate(-50%, -50%);
  }

  .advantages-globe {
    left: 50%;
    width: min(100%, 500px);
    height: min(100%, 500px);
    transform: translate(-50%, -50%);
  }

  .advantages-copy {
    min-height: 120px;
  }

  .advantages-copy-inner {
    max-width: none;
  }

  .service-card,
  .service-card:nth-child(4),
  .service-card:nth-child(5) {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .navbar-inner,
  .hero-inner,
  .services-inner {
    padding: 0 20px;
  }

  .nav-menu {
    gap: 18px;
  }

  .language-toggle {
    margin-left: 14px;
    padding: 8px 10px;
    gap: 6px;
  }

  .nav-link {
    font-size: 14px;
  }

  .hero-section {
    padding: 32px 0 56px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-description {
    font-size: 16px;
    line-height: 1.8;
  }

  .hero-content {
    min-height: 340px;
  }

  .hero-copy {
    max-width: 100%;
  }

  .services-section {
    padding: 16px 0 64px;
  }

  .services-title {
    font-size: 32px;
    margin-bottom: 20px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .advantages-section {
    padding: 12px 0 80px;
  }

  .advantages-inner {
    padding: 0 20px;
  }

  .advantages-visual {
    min-height: 420px;
  }

  .advantages-shape {
    width: min(100%, 390px);
    height: min(100%, 390px);
  }

  .advantages-globe {
    width: min(100%, 360px);
    height: min(100%, 360px);
  }

  .advantages-title {
    font-size: 32px;
    margin-bottom: 18px;
  }

  .contact-section {
    padding: 0;
  }

  .contact-inner {
    padding: 32px 20px 36px;
  }

  .contact-strip {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-copy {
    padding-right: 0;
  }

  .contact-brand-name {
    font-size: 22px;
  }

  .floating-contact {
    right: 14px;
    bottom: 18px;
    top: auto;
    transform: none;
    flex-direction: row;
  }

  .floating-contact-item {
    width: 78px;
    min-height: 72px;
    padding: 12px 10px;
    border-radius: 18px;
  }

  .contact-title {
    font-size: 20px;
  }

  .contact-cta {
    width: 100%;
  }

  .advantages-tabs {
    gap: 10px;
    margin-bottom: 18px;
  }

  .advantages-tab {
    padding: 10px 16px;
    font-size: 14px;
  }

  .advantages-panel {
    padding: 22px 20px 24px;
  }

  .orbit-logo {
    width: 56px;
    height: 56px;
    padding: 10px;
    border-radius: 16px;
  }

  .service-card,
  .service-card:nth-child(4),
  .service-card:nth-child(5) {
    min-height: 240px;
    grid-column: auto;
  }

  .service-card-inner {
    min-height: 240px;
  }
}