:root {
  --w: 1920;
  --h: 6200;
  --bg: #3922b8;
  --cyan: #11dfff;
  --blue: #0c75ff;
  --orange: #ff4b22;
  --white: #fff;
  --modal-bg: rgba(17, 20, 64, .82);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  overflow-x: hidden;
}
button { font: inherit; }
.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 10000;
  padding: 10px 14px;
  border-radius: 10px;
  background: #fff;
  color: #111;
  transform: translateY(-140%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

.page-shell {
  width: 100%;
  display: flex;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(54, 156, 255, .38), transparent 30vw),
    linear-gradient(180deg, #1c49d8 0%, #3423b4 45%, #3922b8 100%);
}
.clone-stage {
  position: relative;
  width: min(100vw, 1920px);
  aspect-ratio: 1920 / 6200;
  min-width: 320px;
  overflow: hidden;
  box-shadow: 0 0 80px rgba(0,0,0,.24);
}
.stage-bg {
  position: absolute;
  inset: 0;
  background-image: url('../assets/page-reference.jpg');
  background-repeat: no-repeat;
  background-position: center top;
  background-size: 100% 100%;
  transform: translateZ(0);
}
.hotspot {
  position: absolute;
  display: block;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  opacity: 0;
  outline: none;
}
.hotspot:focus-visible {
  opacity: 1;
  border: 2px solid rgba(255,255,255,.9);
  border-radius: 999px;
  background: rgba(17, 223, 255, .18);
  box-shadow: 0 0 0 5px rgba(17, 223, 255, .18);
}
.hotspot::after {
  content: attr(aria-label);
  position: absolute;
  left: 50%;
  top: calc(100% + 10px);
  transform: translateX(-50%) translateY(6px);
  white-space: nowrap;
  padding: 8px 12px;
  border-radius: 999px;
  color: #fff;
  font-size: 14px;
  background: rgba(0, 18, 68, .78);
  border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}
.hotspot:hover::after,
.hotspot:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 坐标均按 1920x7759 原图百分比定位 */
.nav-logo { left: 10.6%; top: 0.275%; width: 11.7%; height: 0.976%; }
.nav-home { left: 36.6%; top: 0.225%; width: 4.7%; height: 0.876%; }
.nav-core { left: 43.5%; top: 0.225%; width: 6.3%; height: 0.876%; }
.nav-products { left: 52.0%; top: 0.225%; width: 6.3%; height: 0.876%; }
.nav-solutions { left: 60.4%; top: 0.225%; width: 6.3%; height: 0.876%; }
.nav-contact { left: 89.2%; top: 0.200%; width: 6.8%; height: 0.926%; }
.hero-cta { left: 44.2%; top: 14.917%; width: 11.7%; height: 1.126%; }
.scene-cta { left: 55.4%; top: 70.957%; width: 9.2%; height: 0.976%; }
.service-cta { left: 19.2%; top: 80.994%; width: 9.2%; height: 0.976%; }
.card-1 { left: 18.9%; top: 92.670%; width: 13.7%; height: 8.510%; }
.card-2 { left: 35.0%; top: 92.670%; width: 13.7%; height: 8.510%; }
.card-3 { left: 51.0%; top: 92.670%; width: 13.7%; height: 8.510%; }
.card-4 { left: 67.0%; top: 92.670%; width: 13.7%; height: 8.510%; }
.bottom-cta { left: 61.2%; top: 107.938%; width: 10.2%; height: 1.064%; }

.sr-content {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.scroll-progress {
  position: fixed;
  z-index: 8000;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: rgba(255,255,255,.08);
}
.scroll-progress i {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  box-shadow: 0 0 16px rgba(17,223,255,.8);
}
.back-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 8500;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 50%;
  color: #fff;
  background: rgba(24, 40, 130, .52);
  backdrop-filter: blur(10px);
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: .2s ease;
}
.back-top.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-top:hover { background: rgba(30,118,255,.7); transform: translateY(-2px); }

.modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease;
}
.modal[aria-hidden="false"] { opacity: 1; pointer-events: auto; }
.modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(3, 8, 36, .68);
  backdrop-filter: blur(8px);
}
.modal-panel {
  position: relative;
  width: min(560px, 100%);
  padding: 34px;
  border-radius: 26px;
  color: #fff;
  background:
    linear-gradient(150deg, rgba(22, 99, 255, .35), rgba(49, 22, 168, .82)),
    var(--modal-bg);
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 30px 80px rgba(0,0,0,.38), inset 0 1px 0 rgba(255,255,255,.18);
  transform: translateY(18px) scale(.98);
  transition: transform .22s ease;
}
.modal[aria-hidden="false"] .modal-panel { transform: translateY(0) scale(1); }
.modal-close {
  position: absolute;
  right: 18px;
  top: 14px;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: rgba(255,255,255,.12);
  cursor: pointer;
  font-size: 28px;
  line-height: 1;
}
.modal-logo {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(255,255,255,.12);
}
.modal-logo img { width: 42px; height: 42px; object-fit: contain; }
.modal-panel h2 { margin: 18px 0 8px; font-size: 30px; }
.modal-panel p { margin: 0 0 22px; line-height: 1.7; color: rgba(255,255,255,.82); }
.modal-panel form { display: grid; gap: 14px; }
.modal-panel label { display: grid; gap: 8px; color: rgba(255,255,255,.86); font-size: 14px; }
.modal-panel input,
.modal-panel textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px;
  padding: 13px 14px;
  color: #fff;
  background: rgba(255,255,255,.10);
  outline: none;
  resize: vertical;
}
.modal-panel input::placeholder,
.modal-panel textarea::placeholder { color: rgba(255,255,255,.50); }
.modal-panel input:focus,
.modal-panel textarea:focus { border-color: rgba(17,223,255,.8); box-shadow: 0 0 0 4px rgba(17,223,255,.12); }
.modal-panel form button {
  margin-top: 4px;
  border: 0;
  border-radius: 999px;
  padding: 13px 18px;
  color: #fff;
  background: linear-gradient(90deg, #ff5429, #ff2e18);
  box-shadow: 0 12px 28px rgba(255, 75, 34, .28);
  cursor: pointer;
}
.modal-panel small { display: block; margin-top: 14px; color: rgba(255,255,255,.58); line-height: 1.5; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 10000;
  transform: translateX(-50%) translateY(14px);
  padding: 12px 18px;
  border-radius: 999px;
  color: #fff;
  background: rgba(0, 13, 52, .78);
  border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: .22s ease;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 768px) {
  .clone-stage {
    width: 100vw;
    min-width: 100vw;
    box-shadow: none;
  }
  .hotspot::after { display: none; }
  .back-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
  .modal-panel { padding: 26px 20px; border-radius: 22px; }
  .modal-panel h2 { font-size: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}


/* 去除联系方式、底部联系栏与页脚信息 */
.nav-contact,
.bottom-cta,
.contact-band,
.site-footer,
footer { display: none !important; }