/* 潘朵拉 Panoramic3D — 娱乐 / 科幻官网主题 */

:root {
  --bg-deep: #05080f;
  --bg-panel: #0a101c;
  --bg-elevated: #0f1729;
  --cyan: #00f5ff;
  --cyan-dim: rgba(0, 245, 255, 0.35);
  --purple: #b026ff;
  --purple-dim: rgba(176, 38, 255, 0.4);
  --text: #e8f4ff;
  --text-muted: #8ba4c7;
  --border: rgba(0, 245, 255, 0.25);
  --font-display: "Orbitron", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius: 12px;
  --header-h: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* HTML5 Canvas 粒子底层 */
.fx-canvas {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 氛围光斑 */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
  opacity: 0.45;
  animation: orb-drift 18s ease-in-out infinite;
}

.orb-a {
  width: min(55vw, 480px);
  height: min(55vw, 480px);
  top: -10%;
  left: -15%;
  background: radial-gradient(circle, rgba(0, 245, 255, 0.35) 0%, transparent 70%);
}

.orb-b {
  width: min(50vw, 420px);
  height: min(50vw, 420px);
  bottom: -5%;
  right: -10%;
  background: radial-gradient(circle, rgba(176, 38, 255, 0.3) 0%, transparent 70%);
  animation-delay: -9s;
}

@keyframes orb-drift {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(4%, 3%) scale(1.05);
  }
  66% {
    transform: translate(-3%, 2%) scale(0.98);
  }
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9998;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.grid-bg {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 245, 255, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(176, 38, 255, 0.08), transparent),
    linear-gradient(180deg, #05080f 0%, #080c18 40%, #05080f 100%);
}

.grid-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 245, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, transparent, black 15%, black 85%, transparent);
}

.container {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(5, 8, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  line-height: 1.15;
}

.logo-cn {
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  background: linear-gradient(90deg, var(--cyan), #7dd8ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.logo-en {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.logo-with-img {
  flex-direction: row;
  align-items: center;
}

.logo-img {
  display: block;
  height: 40px;
  width: auto;
  max-width: min(220px, 52vw);
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.nav-divider {
  width: 1px;
  height: 16px;
  background: rgba(255, 255, 255, 0.12);
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s, text-shadow 0.2s;
}

.nav a:hover {
  color: var(--cyan);
  text-shadow: 0 0 12px var(--cyan-dim);
}

.nav .nav-join {
  padding: 0.3rem 0.1rem;
  color: var(--text-muted);
  font-weight: 400;
  transition: color 0.2s, text-shadow 0.2s;
}

.nav .nav-join:hover {
  color: var(--cyan);
  text-shadow: 0 0 12px var(--cyan-dim);
}

.nav .nav-erp--icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  color: rgba(139, 164, 199, 0.55);
  opacity: 0.72;
  transition: color 0.2s, opacity 0.2s, border-color 0.2s, background 0.2s;
}

.nav .nav-erp--icon:hover {
  opacity: 1;
  color: var(--text-muted);
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
}

.nav .nav-erp-svg {
  width: 17px;
  height: 17px;
  display: block;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  border-radius: 8px;
  cursor: pointer;
  position: relative;
}

.nav-toggle::before,
.nav-toggle::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--cyan);
  transition: transform 0.25s;
}

.nav-toggle::before {
  top: 14px;
}

.nav-toggle::after {
  bottom: 14px;
}

.nav-toggle[aria-expanded="true"]::before {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"]::after {
  transform: translateY(-5px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 12px 16px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(5, 8, 15, 0.95);
}

.nav-mobile a {
  color: var(--text);
  text-decoration: none;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-mobile .nav-join {
  color: var(--text);
  font-weight: 400;
}

.nav-mobile .nav-erp--icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 8px auto 0;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: rgba(139, 164, 199, 0.65);
  opacity: 0.85;
}

.nav-mobile .nav-erp--icon:hover {
  opacity: 1;
  color: var(--text-muted);
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
}

.nav-mobile .nav-erp-svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-mobile:not([hidden]) {
    display: flex;
  }
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(3rem, 8vw, 5rem) 0 clamp(4rem, 10vw, 6rem);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(176, 38, 255, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

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

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--purple);
  margin: 0 0 1rem;
}

.hero h1 {
  margin: 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hero-title-cn {
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 900;
  letter-spacing: 0.12em;
  background: linear-gradient(135deg, #fff 0%, var(--cyan) 50%, var(--purple) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-title-cn.text-gradient-live {
  background-size: 200% auto;
  animation: gradient-flow 6s ease infinite;
}

.hero-title-en {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.28em;
}

.hero-lead {
  max-width: 36ch;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-lead strong {
  color: var(--cyan);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--cyan), #0099aa);
  color: #020810;
  box-shadow: 0 0 24px var(--cyan-dim);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0, 245, 255, 0.55);
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 0%,
    rgba(255, 255, 255, 0.35) 45%,
    transparent 55%
  );
  transform: translateX(-120%);
  animation: btn-shine 3.5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes btn-shine {
  0%,
  70% {
    transform: translateX(-120%);
  }
  85% {
    transform: translateX(120%);
  }
  100% {
    transform: translateX(120%);
  }
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(0, 245, 255, 0.06);
}

.btn-ghost:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 20px var(--cyan-dim);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.hero-tags li {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: 6px;
  background: rgba(0, 245, 255, 0.04);
}

/* Device visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 280px;
  perspective: 1200px;
}

.device-stage {
  position: relative;
  width: min(100%, 360px);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.device-ring {
  position: absolute;
  z-index: 0;
  width: 85%;
  height: 85%;
  border-radius: 50%;
  border: 2px solid var(--cyan-dim);
  box-shadow:
    0 0 40px rgba(0, 245, 255, 0.15),
    inset 0 0 60px rgba(176, 38, 255, 0.08);
  animation: pulse-ring 4s ease-in-out infinite;
}

.device-ring::after {
  content: "";
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  border: 1px dashed rgba(0, 245, 255, 0.35);
  animation: spin-slow 24s linear infinite;
}

.device-photo-float {
  position: relative;
  z-index: 2;
  width: 82%;
  max-width: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: hero-float 5.5s ease-in-out infinite;
}

.device-photo {
  width: 100%;
  height: auto;
  vertical-align: middle;
  object-fit: contain;
  border-radius: 4px;
  filter:
    drop-shadow(0 18px 36px rgba(0, 0, 0, 0.65))
    drop-shadow(0 0 28px rgba(0, 245, 255, 0.45))
    drop-shadow(0 0 56px rgba(176, 38, 255, 0.28));
  transition: filter 0.4s ease, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-visual:hover .device-photo {
  filter:
    drop-shadow(0 24px 48px rgba(0, 0, 0, 0.7))
    drop-shadow(0 0 40px rgba(0, 245, 255, 0.65))
    drop-shadow(0 0 80px rgba(176, 38, 255, 0.4));
  transform: scale(1.04) translateY(-2px);
}

@keyframes hero-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

@keyframes pulse-ring {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.03);
    opacity: 0.85;
  }
}

@keyframes spin-slow {
  to {
    transform: rotate(360deg);
  }
}

.device-beam {
  position: absolute;
  z-index: 1;
  bottom: 14%;
  left: 50%;
  transform: translateX(-50%);
  width: 48%;
  height: 28%;
  background: radial-gradient(ellipse at center top, rgba(0, 245, 255, 0.35), transparent 70%);
  filter: blur(14px);
  pointer-events: none;
  opacity: 0.85;
}

.hero-scan {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.35;
  animation: scan 6s linear infinite;
}

@keyframes scan {
  0% {
    transform: translateY(-200px);
    opacity: 0;
  }
  10% {
    opacity: 0.5;
  }
  90% {
    opacity: 0.5;
  }
  100% {
    transform: translateY(0);
    opacity: 0;
  }
}

/* Sections */
.section {
  padding: clamp(3rem, 6vw, 5rem) 0;
  scroll-margin-top: var(--header-h);
}

.section-head {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-head.align-left {
  text-align: left;
}

.section-head h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: 0.06em;
}

.section-head .en {
  font-family: var(--font-display);
  font-size: 0.85em;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.15em;
}

.section-sub {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* 宣传视频（单栏居中） */
.media-videos {
  background: linear-gradient(180deg, transparent, rgba(0, 245, 255, 0.04) 45%, transparent);
}

.video-showcase {
  max-width: min(920px, 100%);
  margin: 0 auto;
}

.media-videos .video-card {
  padding: 1rem;
  background: linear-gradient(135deg, rgba(15, 23, 41, 0.9), rgba(10, 16, 28, 0.72));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 16px 48px rgba(0, 0, 0, 0.35);
}

.media-videos .video-frame {
  border-radius: calc(var(--radius) - 4px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #000;
  aspect-ratio: 16 / 9;
}

.media-videos .video-frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* 海量素材墙：缩略图沿纵深从远处飞向镜头，透视放大并向四周散开 */
.materials { overflow: hidden; }
.material-wall {
  position: relative;
  height: clamp(320px, 46vw, 520px);
  perspective: 900px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 14%, #000 86%, transparent);
  mask-image: linear-gradient(180deg, transparent, #000 14%, #000 86%, transparent);
}
.material-card {
  position: absolute; left: 50%; top: 50%;
  width: var(--w); aspect-ratio: 16 / 9; object-fit: cover;
  margin: calc(var(--w) * -0.28125) 0 0 calc(var(--w) * -0.5);
  border: 1px solid rgba(255, 255, 255, 0.14); border-radius: 4px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.55);
  animation: material-fly linear infinite;
  will-change: transform, opacity;
}
.material-wall.is-paused .material-card { animation-play-state: paused; }
@keyframes material-fly {
  0% { transform: translate3d(var(--x), var(--y), -2600px); opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { transform: translate3d(var(--x), var(--y), 320px); opacity: 0; }
}

/* 多种控制方式：截图套 CSS 画的平板 / 手机实物边框（黑色窄边 + 金属外圈 + 摄像头） */
.control-stage {
  display: flex; justify-content: center; align-items: flex-end;
  gap: clamp(1rem, 3vw, 2.5rem); flex-wrap: wrap;
}
.device { position: relative; margin: 0; background: #0b0d12; }
.device img { display: block; width: 100%; height: auto; border-radius: inherit; }
.device figcaption {
  position: absolute; left: 0; right: 0; bottom: -2.2rem;
  text-align: center; font-size: 0.85rem; color: var(--text-muted);
}
.device::before { /* front camera */
  content: ""; position: absolute; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #3a4a66, #05070b 70%);
}
.device-tablet {
  width: clamp(300px, 52vw, 640px); padding: 18px; border-radius: 26px;
  box-shadow: 0 0 0 2px #3b4252, 0 0 0 3px #11141b, 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 245, 255, 0.12);
}
.device-tablet img { border-radius: 8px; }
.device-tablet::before { width: 7px; height: 7px; left: 50%; top: 6px; margin-left: -3.5px; }
.device-phone {
  width: clamp(120px, 15vw, 200px); padding: 8px; border-radius: 30px;
  box-shadow: 0 0 0 2px #3b4252, 0 0 0 3px #11141b, 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 32px rgba(176, 38, 255, 0.14);
}
.device-phone img { border-radius: 23px; }
.device-phone::before { /* punch-hole camera over the status bar */
  width: 9px; height: 9px; left: 50%; top: 16px; margin-left: -4.5px; z-index: 1;
}
.device-phone::after { /* side buttons */
  content: ""; position: absolute; right: -4px; top: 22%; width: 3px; height: 14%;
  border-radius: 0 2px 2px 0; background: #3b4252;
}
.control-list {
  list-style: none; margin: 4.5rem auto 0; padding: 0; max-width: 960px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
}
.control-list li {
  padding: 1rem 1.1rem; border: 1px solid var(--border); border-radius: var(--radius);
  background: rgba(15, 23, 41, 0.6); text-align: center;
}
.control-list b { display: block; font-family: var(--font-display); color: var(--cyan); margin-bottom: 0.35rem; }
.control-list span { font-size: 0.85rem; color: var(--text-muted); }
@media (max-width: 720px) {
  .control-list { grid-template-columns: repeat(2, 1fr); }
  .device-tablet { width: 100%; padding: 10px; border-radius: 18px; }
  .control-stage { row-gap: 3.5rem; }
  .device-phone { width: calc(50% - 1rem); }
}

  background: linear-gradient(180deg, transparent, rgba(0, 245, 255, 0.03) 50%, transparent);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.product-card {
  padding: 1.25rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.2s ease-out, border-color 0.2s, box-shadow 0.2s;
  transform-style: preserve-3d;
  will-change: transform;
}

.product-card.tilt-card:hover {
  border-color: var(--cyan);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 24px var(--cyan-dim);
}

.product-card:not(.tilt-card):hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 24px var(--cyan-dim);
}

.product-card.featured {
  border-color: rgba(176, 38, 255, 0.5);
  background: linear-gradient(160deg, rgba(176, 38, 255, 0.12), var(--bg-panel));
}

.product-card h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.product-card .ch {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text);
}

.product-card .desc {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Features — 功能条目 */
.features {
  background: linear-gradient(180deg, transparent, rgba(0, 245, 255, 0.03) 40%, transparent);
}

.feature-spec {
  max-width: min(960px, 100%);
  margin: 0 auto;
  padding: 1.25rem 1.35rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(165deg, rgba(15, 23, 41, 0.55), rgba(10, 16, 28, 0.92));
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.feature-spec-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem 2rem;
  align-items: start;
}

@media (max-width: 720px) {
  .feature-spec-cols {
    grid-template-columns: 1fr;
  }
}

.feature-spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-spec-list li {
  position: relative;
  padding: 0.45rem 0 0.45rem 1.1rem;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.feature-spec-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan-dim);
}

.feature-spec-new {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0, 245, 255, 0.2);
}

.feature-spec-new-title {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--cyan);
  font-family: var(--font-display);
}

/* Topology */
.topology-wrap {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(10, 16, 28, 0.6);
  overflow: hidden;
  box-shadow: inset 0 0 80px rgba(0, 245, 255, 0.05);
}

.topology-glow {
  position: relative;
  z-index: 0;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.topology-glow .topology-svg {
  position: relative;
  z-index: 1;
}

.topology-glow::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(120deg, rgba(0, 245, 255, 0.4), transparent 40%, rgba(176, 38, 255, 0.35));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.65;
  animation: border-spin 8s linear infinite;
}

@keyframes border-spin {
  to {
    filter: hue-rotate(360deg);
  }
}

.topology-svg {
  display: block;
  width: 100%;
  height: auto;
}

.topo-line {
  animation: dash-move 2.5s linear infinite;
}

.topo-line-b {
  animation-delay: 0.4s;
}

.topo-line-c {
  animation-delay: 0.8s;
}

.topo-line-d {
  animation-delay: 1.2s;
}

.topo-line-e {
  animation-delay: 0.2s;
}

@keyframes dash-move {
  to {
    stroke-dashoffset: -28;
  }
}

/* 产品与参数：特性 / 拓扑 / 视频 折叠，默认只露型号 */
.spec-more { margin-top: 2rem; border: 1px solid var(--border); border-radius: var(--radius); background: rgba(10, 16, 28, 0.6); }
.spec-more > summary {
  cursor: pointer; list-style: none; padding: 1rem 1.25rem; text-align: center; font-weight: 700; color: var(--cyan);
}
.spec-more > summary::-webkit-details-marker { display: none; }
.spec-more > summary::after { content: " ▾"; }
.spec-more[open] > summary::after { content: " ▴"; }
.spec-more > summary span { display: block; font-size: 0.8rem; font-weight: 400; color: var(--text-muted); }
.spec-more[open] { padding: 0 1.25rem 2rem; }
.spec-more .section-head { margin: 2.5rem 0 1.5rem; }

/* Scenarios */
.scenario-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: stretch;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-panel);
}

.scenario-card.glass-panel {
  background: linear-gradient(145deg, rgba(10, 16, 28, 0.95), rgba(5, 8, 15, 0.88));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 40px rgba(176, 38, 255, 0.06);
}

@media (max-width: 768px) {
  .scenario-card {
    grid-template-columns: 1fr;
  }
}

.scenario-visual {
  position: relative;
  min-height: 240px;
  background: radial-gradient(ellipse at 50% 100%, #1a0a2e 0%, #050810 60%);
  overflow: hidden;
}

.scenario-lasers {
  position: absolute;
  inset: 0;
  background:
    conic-gradient(from 200deg at 50% 120%, transparent 40%, rgba(0, 245, 255, 0.15) 45%, transparent 50%),
    conic-gradient(from 160deg at 30% 80%, transparent 35%, rgba(176, 38, 255, 0.2) 42%, transparent 48%),
    conic-gradient(from 220deg at 70% 80%, transparent 35%, rgba(0, 245, 255, 0.12) 42%, transparent 48%);
  animation: laser-shift 8s ease-in-out infinite;
}

@keyframes laser-shift {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.85;
    transform: scale(1.05);
  }
}

.scenario-floor {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 35%;
  background: linear-gradient(180deg, transparent, rgba(0, 245, 255, 0.08));
  border-top: 1px solid rgba(0, 245, 255, 0.2);
}

.scenario-text {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.scenario-text h3 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  color: var(--cyan);
}

.scenario-text p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* 行业方案入口卡片 */
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 900px) { .industry-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .industry-grid { grid-template-columns: 1fr; } }
.industry-card {
  display: block; border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--text);
  border: 1px solid var(--border); background: var(--bg-panel); transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.industry-card:hover, .industry-card:focus-visible { transform: translateY(-4px); border-color: var(--cyan); box-shadow: 0 12px 36px rgba(0, 245, 255, 0.15); }
.industry-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
.industry-card > div { padding: 1rem 1.15rem 1.2rem; }
.industry-card h3 { margin: 0 0 0.35rem; font-size: 1.1rem; }
.industry-card p { margin: 0 0 0.75rem; font-size: 0.9rem; color: var(--text-muted); }
.industry-card .go { font-size: 0.85rem; font-weight: 700; color: var(--cyan); }
.industry-card .go::after { content: " →"; }
.industry-card.soon .go { color: var(--text-muted); }

/* Cases — 客户 logo */
.case-logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 1rem 1.25rem;
  align-items: stretch;
}

.case-logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 96px;
  padding: 1rem 1.15rem;
  background: linear-gradient(145deg, rgba(15, 23, 41, 0.65), rgba(10, 16, 28, 0.92));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.case-logo-item:hover {
  border-color: var(--purple-dim);
  box-shadow: 0 0 20px rgba(176, 38, 255, 0.18);
}

.case-logo-item img {
  display: block;
  max-width: 100%;
  max-height: 76px;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* Download — 调试 App */
.download {
  background: linear-gradient(180deg, transparent, rgba(0, 245, 255, 0.05) 50%, transparent);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  max-width: 860px;
  margin-inline: auto;
}

.download-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.6rem 1.5rem;
  background: linear-gradient(150deg, rgba(15, 23, 41, 0.85), rgba(10, 16, 28, 0.95));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s, box-shadow 0.25s;
  will-change: transform;
}

.download-card:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 28px rgba(0, 245, 255, 0.16);
}

.download-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 1rem;
  border: 1px solid rgba(0, 245, 255, 0.28);
  border-radius: 12px;
  background: rgba(0, 245, 255, 0.07);
  color: var(--cyan);
}

.download-icon svg {
  width: 24px;
  height: 24px;
  display: block;
}

.download-card h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

.download-meta {
  margin: 0 0 0.6rem;
  font-size: 0.8rem;
  color: var(--cyan);
  letter-spacing: 0.03em;
}

.download-desc {
  margin: 0 0 1.35rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.download-btn {
  margin-top: auto;
  width: 100%;
  justify-content: center;
}

.download-note {
  max-width: 860px;
  margin: 1.5rem auto 0;
  text-align: center;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* Contact */
.contact {
  background: linear-gradient(180deg, transparent, rgba(176, 38, 255, 0.06));
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}

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

.contact-company {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0.5rem 0 1rem;
}

.en-block {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin-top: 0.25rem;
}

.contact-hint {
  color: var(--text-muted);
  max-width: 42ch;
}

.contact-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.contact-list li {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.contact-list .contact-person-qr-item {
  list-style: none;
  margin: 0.35rem 0 1rem;
  padding: 0;
}

.contact-list .contact-person-qr-item .qr-card--person {
  max-width: 220px;
  margin: 0;
}

.contact-list .contact-person-qr-item .qr-caption {
  text-align: left;
}

.contact-list .label {
  display: inline-block;
  min-width: 3rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.contact-tel {
  color: var(--cyan);
  text-decoration: none;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.contact-tel:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.contact-qr-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
  align-items: stretch;
}

.qr-caption {
  margin: 0 0 0.65rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
}

.qr-img {
  display: block;
  width: 100%;
  max-width: 200px;
  height: auto;
  margin-inline: auto;
  border-radius: 6px;
  border: 1px solid rgba(0, 245, 255, 0.28);
  background: rgba(0, 0, 0, 0.25);
}

.qr-card {
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(15, 23, 41, 0.55), rgba(10, 16, 28, 0.85));
}

.qr-placeholder {
  width: 160px;
  height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 2px dashed rgba(0, 245, 255, 0.35);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.qr-placeholder small {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.7rem;
  opacity: 0.8;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  background: #03050a;
}

.footer-inner p {
  margin: 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-inner p + p {
  margin-top: 0.5rem;
}

.footer-inner .footer-beian a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.footer-inner .footer-beian a:hover {
  color: var(--text);
}

/* 滚动显现 (Intersection Observer + .is-visible) */
.reveal {
  opacity: 0;
  transform: translate3d(0, 36px, 0) scale(0.98);
  filter: blur(6px);
  transition:
    opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.75s cubic-bezier(0.22, 1, 0.36, 1),
    filter 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
  filter: blur(0);
}

.reveal-delay-1 {
  transition-delay: 0.12s;
}

.product-card.reveal:nth-child(1) {
  transition-delay: 0.02s;
}
.product-card.reveal:nth-child(2) {
  transition-delay: 0.08s;
}
.product-card.reveal:nth-child(3) {
  transition-delay: 0.14s;
}
.product-card.reveal:nth-child(4) {
  transition-delay: 0.2s;
}
.product-card.reveal:nth-child(5) {
  transition-delay: 0.26s;
}
.product-card.reveal:nth-child(6) {
  transition-delay: 0.32s;
}

.case-logo-item.reveal:nth-child(1) {
  transition-delay: 0.02s;
}
.case-logo-item.reveal:nth-child(2) {
  transition-delay: 0.05s;
}
.case-logo-item.reveal:nth-child(3) {
  transition-delay: 0.08s;
}
.case-logo-item.reveal:nth-child(4) {
  transition-delay: 0.11s;
}
.case-logo-item.reveal:nth-child(5) {
  transition-delay: 0.14s;
}
.case-logo-item.reveal:nth-child(6) {
  transition-delay: 0.17s;
}
.case-logo-item.reveal:nth-child(7) {
  transition-delay: 0.2s;
}
.case-logo-item.reveal:nth-child(8) {
  transition-delay: 0.23s;
}
.case-logo-item.reveal:nth-child(9) {
  transition-delay: 0.26s;
}
.case-logo-item.reveal:nth-child(10) {
  transition-delay: 0.29s;
}
.case-logo-item.reveal:nth-child(11) {
  transition-delay: 0.32s;
}
.case-logo-item.reveal:nth-child(12) {
  transition-delay: 0.35s;
}
.case-logo-item.reveal:nth-child(13) {
  transition-delay: 0.38s;
}

@keyframes gradient-flow {
  0%,
  100% {
    background-position: 0% center;
  }
  50% {
    background-position: 100% center;
  }
}

.eyebrow-shimmer {
  background: linear-gradient(90deg, var(--purple), var(--cyan), var(--purple));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-flow 4s ease infinite;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fx-canvas,
  .orb {
    display: none !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }

  .text-gradient-live,
  .eyebrow-shimmer {
    animation: none !important;
    background: linear-gradient(135deg, #fff 0%, var(--cyan) 50%, var(--purple) 100%);
    -webkit-background-clip: text;
    background-clip: text;
  }

  .eyebrow-shimmer {
    background: var(--purple);
    color: var(--purple);
    -webkit-background-clip: unset;
    background-clip: unset;
  }

  .btn-primary::after {
    display: none;
  }

  .device-photo-float {
    animation: none !important;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .topology-glow::before {
    animation: none !important;
    opacity: 0.4;
  }

  .material-card {
    animation: none !important;
    transform: translate3d(var(--x), var(--y), -700px);
  }
}