/* =========================================================
   元位智科 · 品牌站点样式
   ========================================================= */
:root {
  --bg: #05080f;
  --bg-2: #070d18;
  --bg-3: #0a1424;
  --ink: #eaf3ff;
  --muted: #94a9c6;
  --dim: #6b7f9c;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --cyan: #38d6f5;
  --blue: #4b8bff;
  --violet: #8b6cff;
  --mint: #35e0a1;
  --amber: #ffc857;
  --grad: linear-gradient(120deg, #38d6f5 0%, #4b8bff 55%, #8b6cff 100%);
  --grad-soft: linear-gradient(140deg, rgba(56, 214, 245, 0.16), rgba(75, 139, 255, 0.08) 45%, rgba(139, 108, 255, 0.12));
  --surface: rgba(255, 255, 255, 0.045);
  --surface-2: rgba(255, 255, 255, 0.075);
  --radius: 18px;
  --radius-lg: 26px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  --container: 1180px;
  --font: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 620px at 78% -8%, rgba(56, 214, 245, 0.14), transparent 65%),
    radial-gradient(760px 560px at 8% 12%, rgba(75, 139, 255, 0.12), transparent 62%),
    radial-gradient(900px 700px at 50% 108%, rgba(139, 108, 255, 0.1), transparent 60%),
    linear-gradient(180deg, #05080f 0%, #060b15 40%, #05080f 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 75% 60% at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 75% 60% at 50% 30%, #000 20%, transparent 78%);
}

a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }
::selection { background: rgba(56, 214, 245, 0.3); color: #fff; }

.container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
.section { padding: 104px 0; position: relative; }
.section--tight { padding: 72px 0; }
.section--line { border-top: 1px solid var(--line); }

/* ---------- 基础排版 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 600;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head h2 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 16px 0 18px;
  font-weight: 700;
}
.section-head .lead { color: var(--muted); font-size: 16.5px; margin: 0; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .eyebrow::before { display: none; }
.section-head--center .eyebrow::after {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan));
}
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead { color: var(--muted); }
.mono { font-variant-numeric: tabular-nums; }
h1, h2, h3, h4, .g-note, .stage-caption { text-wrap: balance; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  white-space: nowrap;
}
.btn-primary {
  color: #041018;
  background: var(--grad);
  box-shadow: 0 12px 34px rgba(56, 214, 245, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 44px rgba(56, 214, 245, 0.36); }
.btn-ghost {
  color: var(--ink);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover { border-color: rgba(56, 214, 245, 0.55); background: rgba(56, 214, 245, 0.08); transform: translateY(-2px); }
.btn-sm { height: 42px; padding: 0 18px; font-size: 14px; }
.btn .icon { width: 18px; height: 18px; }

/* ---------- 头部导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(5, 8, 15, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  height: 42px;
  padding: 5px 11px;
  border-radius: 11px;
  background: #fff;
  display: grid;
  place-items: center;
}
.brand-mark img { height: 32px; width: auto; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 17px; letter-spacing: 0.06em; font-weight: 700; }
.brand-text span { font-size: 10px; letter-spacing: 0.22em; color: var(--dim); margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links > a,
.nav-drop > a {
  font-size: 14.5px;
  color: var(--muted);
  font-weight: 500;
  padding: 8px 0;
  position: relative;
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.nav-links > a:hover, .nav-drop > a:hover { color: var(--ink); }
.nav-links > a.active, .nav-drop > a.active { color: var(--ink); }
.nav-links > a.active::after, .nav-drop > a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
}
.nav-drop { position: relative; }
.nav-drop .caret { width: 12px; height: 12px; opacity: 0.6; transition: transform 0.25s ease; }
.nav-drop:hover .caret { transform: rotate(180deg); }
.drop-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: -18px;
  min-width: 230px;
  padding: 8px;
  border-radius: 16px;
  background: rgba(9, 16, 29, 0.96);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
  backdrop-filter: blur(18px);
}
.nav-drop:hover .drop-menu, .nav-drop:focus-within .drop-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.drop-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: 11px;
  transition: background 0.2s ease;
}
.drop-menu a:hover { background: rgba(56, 214, 245, 0.08); }
.drop-menu .di {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(56, 214, 245, 0.1);
  display: grid;
  place-items: center;
  color: var(--cyan);
  flex-shrink: 0;
}
.drop-menu .di .icon { width: 18px; height: 18px; }
.drop-menu .dt { display: flex; flex-direction: column; line-height: 1.35; }
.drop-menu .dt strong { font-size: 14px; font-weight: 600; }
.drop-menu .dt span { font-size: 11.5px; color: var(--dim); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 17px;
  border-radius: 999px;
  border: 1px solid rgba(56, 214, 245, 0.4);
  color: var(--cyan);
  font-size: 13.5px;
  font-weight: 600;
  transition: background 0.25s ease, box-shadow 0.25s ease;
}
.nav-cta:hover { background: rgba(56, 214, 245, 0.1); box-shadow: 0 0 24px rgba(56, 214, 245, 0.18); }
.nav-cta .icon { width: 16px; height: 16px; }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  place-items: center;
}
.nav-toggle .icon { width: 20px; height: 20px; }

/* ---------- 首页 Hero ---------- */
.hero { position: relative; padding: 168px 0 76px; overflow: hidden; }
.hero-glow {
  position: absolute;
  width: 780px;
  height: 780px;
  right: -220px;
  top: -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 214, 245, 0.16), transparent 62%);
  filter: blur(10px);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.04fr 0.96fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px 7px 8px;
  border-radius: 999px;
  border: 1px solid rgba(56, 214, 245, 0.28);
  background: rgba(56, 214, 245, 0.07);
  font-size: 12.5px;
  color: #bfeaff;
  letter-spacing: 0.04em;
}
.hero-badge .dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(56, 214, 245, 0.14);
  display: grid;
  place-items: center;
}
.hero-badge .dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.hero h1 {
  font-size: clamp(40px, 5.6vw, 68px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 24px 0 22px;
}
.hero .desc { color: var(--muted); font-size: 17px; max-width: 540px; margin: 0 0 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 52px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.hero-stat .v {
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.hero-stat .v small { font-size: 12px; font-weight: 500; color: var(--muted); margin-left: 2px; }
.hero-stat .k { font-size: 12px; color: var(--dim); margin-top: 5px; letter-spacing: 0.02em; }

/* Hero 视觉 */
.hero-visual { position: relative; min-height: 500px; display: flex; align-items: center; justify-content: center; }
.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(56, 214, 245, 0.16);
  pointer-events: none;
}
.orbit.o1 { width: 470px; height: 470px; }
.orbit.o2 { width: 620px; height: 620px; border-color: rgba(75, 139, 255, 0.12); }
.orbit.o3 { width: 760px; height: 760px; border-color: rgba(139, 108, 255, 0.08); }
.orbit::after {
  content: "";
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 14px var(--cyan);
  top: -3px;
  left: 50%;
}
.orbit.o2::after { background: var(--blue); box-shadow: 0 0 14px var(--blue); top: auto; bottom: 14%; left: 8%; }
.orbit.o3::after { background: var(--violet); box-shadow: 0 0 14px var(--violet); top: 40%; right: 2%; left: auto; }
.stage {
  position: relative;
  width: min(372px, 84%);
  border-radius: 28px;
  padding: 22px;
  background: linear-gradient(165deg, #f7fafe, #e8f0fb 60%, #dce7f7);
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.55), inset 0 1px 0 #fff;
  z-index: 2;
}
.stage::before {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: 20px;
  border: 1px solid rgba(9, 30, 66, 0.08);
  pointer-events: none;
}
.stage .product-shot { mix-blend-mode: multiply; width: 100%; height: auto; }
.stage-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 6px 0;
  color: #2a3f5f;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.stage-caption span:last-child { color: #5d7a9e; font-weight: 500; }
.float-chip {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 15px;
  border-radius: 14px;
  background: rgba(9, 17, 31, 0.82);
  border: 1px solid rgba(56, 214, 245, 0.22);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(14px);
  animation: float 6s ease-in-out infinite;
}
.float-chip .fi {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: rgba(56, 214, 245, 0.12);
  display: grid;
  place-items: center;
  color: var(--cyan);
}
.float-chip .fi .icon { width: 16px; height: 16px; }
.float-chip .ft { display: block; font-size: 9.5px; color: var(--dim); letter-spacing: 0.08em; text-transform: uppercase; line-height: 1.4; }
.float-chip .fv { display: block; font-size: 13px; font-weight: 600; line-height: 1.35; white-space: nowrap; }
.float-chip.c1 { top: -2%; left: -8%; animation-delay: 0s; }
.float-chip.c2 { top: 16%; right: -8%; animation-delay: 1.6s; }
.float-chip.c3 { bottom: 14%; left: -8%; animation-delay: 3s; }
.float-chip.c4 { bottom: 0%; right: -8%; animation-delay: 2.2s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-11px); } }

/* ---------- 数据条 ---------- */
.stat-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(56, 214, 245, 0.04), rgba(75, 139, 255, 0.03), rgba(139, 108, 255, 0.04));
}
.stat-band-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-item { padding: 34px 28px; border-left: 1px solid var(--line); }
.stat-item:first-child { border-left: 0; padding-left: 0; }
.stat-item .sv { font-size: 27px; font-weight: 700; letter-spacing: -0.02em; }
.stat-item .sv small { font-size: 12px; color: var(--muted); font-weight: 500; margin-left: 3px; }
.stat-item .sk { font-size: 12.5px; color: var(--dim); margin-top: 4px; }

/* ---------- 产品卡片 ---------- */
.products-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.product-card {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.02) 55%);
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); border-color: rgba(56, 214, 245, 0.34); box-shadow: 0 30px 70px rgba(0, 0, 0, 0.42), 0 0 60px rgba(56, 214, 245, 0.06); }
.product-media {
  position: relative;
  margin: 18px 18px 0;
  border-radius: 18px;
  background: radial-gradient(circle at 50% 20%, #ffffff, #e9f1fb 70%, #dfeaf8);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}
.product-media img { max-height: 100%; width: auto; mix-blend-mode: multiply; }
.product-media .media-tint {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(56, 214, 245, 0.16), transparent 45%);
  pointer-events: none;
}
.product-media .tag-corner {
  position: absolute;
  left: 14px;
  top: 14px;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #0d2a3a;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(13, 42, 58, 0.1);
  backdrop-filter: blur(6px);
  font-weight: 600;
  z-index: 2;
}
.product-body { padding: 26px 26px 30px; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { margin: 0 0 10px; font-size: 23px; letter-spacing: -0.01em; }
.product-body .psum { color: var(--muted); font-size: 14.5px; margin: 0 0 18px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.chip {
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 11.5px;
  color: #c9dcf2;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.035);
  white-space: nowrap;
}
.chip.hot { color: #9fe9ff; border-color: rgba(56, 214, 245, 0.3); background: rgba(56, 214, 245, 0.08); }
.p-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: auto; padding-top: 20px; border-top: 1px solid var(--line); }
.p-spec .v { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.p-spec .k { font-size: 11px; color: var(--dim); margin-top: 2px; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
}
.card-link .icon { width: 16px; height: 16px; transition: transform 0.25s ease; }
.card-link:hover .icon { transform: translateX(4px); }

/* ---------- 技术 ---------- */
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tech-card {
  padding: 28px 24px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.018));
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.tech-card::after {
  content: "";
  position: absolute;
  width: 140px;
  height: 140px;
  right: -50px;
  top: -50px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 214, 245, 0.16), transparent 68%);
  opacity: 0.7;
}
.tech-card:hover { transform: translateY(-4px); border-color: rgba(56, 214, 245, 0.3); }
.tech-icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: var(--cyan);
  background: rgba(56, 214, 245, 0.1);
  border: 1px solid rgba(56, 214, 245, 0.22);
  margin-bottom: 20px;
}
.tech-icon .icon { width: 22px; height: 22px; }
.tech-card h3 { margin: 0 0 8px; font-size: 17px; }
.tech-card p { margin: 0; font-size: 13.5px; color: var(--muted); line-height: 1.7; }
.tech-card .tv { font-size: 24px; font-weight: 700; margin-bottom: 4px; letter-spacing: -0.02em; }
.tech-card .tv small { font-size: 11.5px; color: var(--muted); font-weight: 500; margin-left: 3px; }

.spectrum {
  margin-top: 34px;
  padding: 26px 30px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
}
.spectrum-title { font-size: 12px; letter-spacing: 0.14em; color: var(--dim); text-transform: uppercase; margin-bottom: 16px; }
.spectrum-bar { position: relative; height: 6px; border-radius: 999px; background: linear-gradient(90deg, rgba(56, 214, 245, 0.25), rgba(75, 139, 255, 0.55), rgba(139, 108, 255, 0.3)); }
.spectrum-bar::before {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 1px; height: 22px;
  background: rgba(255, 255, 255, 0.4);
  transform: translate(-50%, -50%);
}
.spectrum-labels { display: flex; justify-content: space-between; margin-top: 12px; font-size: 12px; color: var(--muted); }
.spectrum-item { display: flex; gap: 12px; align-items: flex-start; }
.spectrum-item .si { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: rgba(56, 214, 245, 0.09); color: var(--cyan); flex-shrink: 0; }
.spectrum-item .si .icon { width: 18px; height: 18px; }
.spectrum-item strong { font-size: 14px; display: block; line-height: 1.4; }
.spectrum-item span { font-size: 12.5px; color: var(--dim); }

/* ---------- 场景 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scene-card {
  padding: 26px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.028);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.scene-card:hover { background: rgba(56, 214, 245, 0.055); border-color: rgba(56, 214, 245, 0.28); transform: translateY(-3px); }
.scene-card .sc-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: rgba(56, 214, 245, 0.08);
  border: 1px solid rgba(56, 214, 245, 0.18);
  color: var(--cyan);
  display: grid; place-items: center; flex-shrink: 0;
}
.scene-card .sc-icon .icon { width: 21px; height: 21px; }
.scene-card h3 { margin: 2px 0 6px; font-size: 16px; }
.scene-card p { margin: 0; font-size: 12.5px; color: var(--dim); line-height: 1.65; }

/* ---------- 优势 ---------- */
.why-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 56px; align-items: center; }
.why-list { display: flex; flex-direction: column; gap: 8px; }
.why-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.why-item:last-child { border-bottom: 0; }
.why-no { font-size: 12px; color: var(--cyan); letter-spacing: 0.1em; font-weight: 600; min-width: 34px; padding-top: 2px; }
.why-item h3 { margin: 0 0 5px; font-size: 16.5px; }
.why-item p { margin: 0; font-size: 13.5px; color: var(--muted); }
.why-visual {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(56, 214, 245, 0.08), rgba(75, 139, 255, 0.03) 45%, rgba(139, 108, 255, 0.08));
  padding: 32px;
  overflow: hidden;
}
.why-visual .glow { position: absolute; width: 300px; height: 300px; right: -100px; bottom: -120px; border-radius: 50%; background: radial-gradient(circle, rgba(56, 214, 245, 0.2), transparent 70%); }
.cert-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; position: relative; }
.cert-card {
  padding: 20px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(5, 10, 18, 0.35);
  backdrop-filter: blur(6px);
}
.cert-card .ci { color: var(--cyan); margin-bottom: 12px; }
.cert-card .ci .icon { width: 22px; height: 22px; }
.cert-card strong { display: block; font-size: 14px; margin-bottom: 4px; }
.cert-card span { font-size: 11.5px; color: var(--dim); line-height: 1.5; display: block; }
.big-metric {
  margin-top: 16px;
  padding: 20px;
  border-radius: 14px;
  border: 1px solid rgba(56, 214, 245, 0.24);
  background: rgba(56, 214, 245, 0.07);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.big-metric .bm-v { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; }
.big-metric .bm-k { font-size: 12px; color: var(--muted); }

/* ---------- CTA ---------- */
.cta-band { padding: 0 0 100px; }
.cta-inner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(56, 214, 245, 0.26);
  background:
    radial-gradient(700px 300px at 12% 0%, rgba(56, 214, 245, 0.16), transparent 60%),
    radial-gradient(600px 300px at 88% 100%, rgba(139, 108, 255, 0.14), transparent 60%),
    linear-gradient(140deg, #081424, #0a1120 60%, #0a0f1c);
  padding: 54px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}
.cta-inner h2 { margin: 0 0 10px; font-size: clamp(26px, 3.2vw, 36px); letter-spacing: -0.01em; line-height: 1.3; }
.cta-inner p { margin: 0; color: var(--muted); font-size: 14.5px; }
.cta-actions { display: flex; gap: 12px; flex-shrink: 0; flex-wrap: wrap; }
.cta-footnote { font-size: 12px; color: var(--dim); margin-top: 10px; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); background: rgba(4, 7, 13, 0.6); padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.35fr 0.8fr 0.8fr 0.95fr; gap: 40px; }
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand p { color: var(--dim); font-size: 13px; line-height: 1.8; margin: 0; max-width: 300px; }
.footer-col h4 { margin: 0 0 16px; font-size: 13px; color: var(--muted); letter-spacing: 0.06em; font-weight: 600; }
.footer-col a, .footer-col span { display: block; font-size: 13px; color: var(--dim); margin-bottom: 10px; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--cyan); }
.footer-contact div { display: flex; gap: 9px; align-items: flex-start; margin-bottom: 11px; color: var(--dim); font-size: 12.5px; line-height: 1.6; }
.footer-contact .icon { width: 15px; height: 15px; color: var(--cyan); flex-shrink: 0; margin-top: 3px; }
.footer-bottom {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--dim);
  font-size: 11.5px;
  flex-wrap: wrap;
}

/* ---------- 页面头部（内页） ---------- */
.page-hero {
  position: relative;
  padding: 156px 0 68px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: -180px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 214, 245, 0.13), transparent 62%);
  pointer-events: none;
}
.breadcrumb { display: flex; align-items: center; gap: 9px; font-size: 12px; color: var(--dim); margin-bottom: 26px; letter-spacing: 0.04em; }
.breadcrumb a { color: var(--dim); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb .sep { opacity: 0.5; }
.page-hero h1 { font-size: clamp(34px, 4.6vw, 52px); line-height: 1.2; letter-spacing: -0.02em; margin: 14px 0 18px; font-weight: 800; }
.page-hero .lead { max-width: 680px; font-size: 16.5px; margin: 0; }

/* ---------- 产品详情 Hero ---------- */
.product-hero { padding: 140px 0 80px; }
.product-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.gallery {
  position: relative;
  border-radius: 24px;
  padding: 30px;
  background: radial-gradient(circle at 50% 15%, #ffffff, #eef4fb 65%, #e2ebf8);
  box-shadow: 0 34px 80px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}
.gallery img { width: 100%; height: auto; mix-blend-mode: multiply; }
.gallery .g-corner { position: absolute; left: 18px; top: 18px; font-size: 10px; letter-spacing: 0.16em; color: #5c7899; text-transform: uppercase; }
.gallery .g-note { text-align: center; color: #5c7899; font-size: 11px; margin-top: 8px; letter-spacing: 0.05em; }
.product-info .chip-row { margin: 22px 0 24px; }
.product-info h1 { font-size: clamp(32px, 4vw, 48px); line-height: 1.2; letter-spacing: -0.02em; margin: 14px 0 16px; }
.product-info .sub { color: var(--muted); font-size: 16px; margin: 0 0 26px; }
.quick-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-bottom: 30px; }
.quick-spec {
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
}
.quick-spec .qv { font-size: 19px; font-weight: 700; letter-spacing: -0.01em; }
.quick-spec .qv small { font-size: 11px; color: var(--muted); font-weight: 500; margin-left: 2px; }
.quick-spec .qk { font-size: 11.5px; color: var(--dim); margin-top: 2px; }

/* ---------- 详情通用 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card {
  padding: 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.3s ease, background 0.3s ease;
}
.feature-card:hover { border-color: rgba(56, 214, 245, 0.26); background: rgba(56, 214, 245, 0.045); }
.feature-card .f-icon {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(56, 214, 245, 0.09);
  color: var(--cyan);
  margin-bottom: 18px;
}
.feature-card .f-icon .icon { width: 20px; height: 20px; }
.feature-card h3 { margin: 0 0 8px; font-size: 16px; }
.feature-card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.7; }
.feature-card .fval { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.feature-card .fval small { font-size: 11px; color: var(--muted); font-weight: 500; }

/* 规格表 */
.spec-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.025);
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.spec-table th {
  text-align: left;
  padding: 13px 22px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  font-weight: 600;
  background: rgba(255, 255, 255, 0.035);
  border-bottom: 1px solid var(--line);
}
.spec-table tr.group td {
  padding: 13px 22px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  background: rgba(56, 214, 245, 0.055);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-weight: 600;
}
.spec-table td {
  padding: 14px 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.055);
  color: #d5e4f7;
  vertical-align: top;
}
.spec-table td:first-child { width: 26%; color: var(--muted); }
.spec-table tr:last-child td { border-bottom: 0; }
.spec-table td strong { color: var(--ink); font-weight: 600; }
.spec-table.three td:first-child { width: 24%; }
.spec-table .accent { color: var(--cyan); font-weight: 600; }

/* 对比表（型号） */
.compare-head th { text-align: center; }
.compare-head th:first-child { text-align: left; }
.compare-table th, .compare-table td { text-align: center; }
.compare-table td:first-child, .compare-table th:first-child { text-align: left; }
.compare-table .model { color: var(--ink); font-weight: 700; font-size: 14px; }
.compare-table .model span { display: block; font-size: 11px; color: var(--dim); font-weight: 400; margin-top: 2px; }

/* Tabs */
.tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
.tab-btn {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.25s ease;
}
.tab-btn.active { color: #06202b; background: var(--grad); border-color: transparent; font-weight: 600; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeUp 0.45s ease both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* 按键/指示灯 */
.key-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.info-card {
  padding: 22px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}
.info-card h4 { margin: 0 0 8px; font-size: 14px; color: var(--cyan); font-weight: 600; }
.info-card p { margin: 0; font-size: 13px; color: var(--muted); }
.led-row { display: flex; align-items: flex-start; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.led-row:last-child { border-bottom: 0; }
.led-dot { width: 10px; height: 10px; border-radius: 50%; margin-top: 5px; flex-shrink: 0; }
.led-dot.blue { background: #4da3ff; box-shadow: 0 0 12px rgba(77, 163, 255, 0.7); }
.led-dot.green { background: #35e0a1; box-shadow: 0 0 12px rgba(53, 224, 161, 0.7); }
.led-dot.red { background: #ff5d6c; box-shadow: 0 0 12px rgba(255, 93, 108, 0.7); }
.led-row .lt { font-size: 13.5px; color: var(--ink); }
.led-row .lt span { color: var(--dim); font-size: 12.5px; }

/* 清单 */
.list-table td:first-child { width: 12%; color: var(--dim); text-align: center; }
.list-table th:first-child { text-align: center; }

/* AOA 架构图 */
.arch-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(56, 214, 245, 0.06), rgba(75, 139, 255, 0.02) 50%, rgba(139, 108, 255, 0.06));
  padding: 34px;
  overflow: hidden;
}
.arch-svg { width: 100%; height: auto; }

/* ---------- 行业方案页 ---------- */
.industry-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.industry-card {
  position: relative;
  padding: 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.industry-card::after {
  content: "";
  position: absolute;
  width: 180px; height: 180px; right: -70px; top: -70px; border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 214, 245, 0.14), transparent 70%);
}
.industry-card:hover { transform: translateY(-4px); border-color: rgba(56, 214, 245, 0.3); }
.industry-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.industry-head .ih-icon {
  width: 48px; height: 48px; border-radius: 13px;
  background: rgba(56, 214, 245, 0.09);
  border: 1px solid rgba(56, 214, 245, 0.18);
  color: var(--cyan);
  display: grid; place-items: center;
}
.industry-head .ih-icon .icon { width: 22px; height: 22px; }
.industry-head h3 { margin: 0; font-size: 19px; }
.industry-head .ih-en { font-size: 10px; letter-spacing: 0.16em; color: var(--dim); margin-top: 3px; text-transform: uppercase; }
.industry-card p { margin: 0 0 14px; color: var(--muted); font-size: 13.5px; }
.industry-points { display: flex; flex-direction: column; gap: 8px; }
.industry-points li { display: flex; gap: 9px; font-size: 12.5px; color: #b9cbe2; align-items: flex-start; }
.industry-points .icon { width: 15px; height: 15px; color: var(--mint); flex-shrink: 0; margin-top: 2px; }

/* 流程 */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step-card {
  padding: 26px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  position: relative;
}
.step-card .step-no { font-size: 11px; letter-spacing: 0.12em; color: var(--cyan); margin-bottom: 12px; font-weight: 600; }
.step-card h3 { margin: 0 0 7px; font-size: 15px; }
.step-card p { margin: 0; font-size: 12.5px; color: var(--dim); }
.step-card::before {
  content: "";
  position: absolute;
  top: 50%; right: -18px;
  width: 18px; height: 1px;
  background: var(--line-strong);
}
.step-card:last-child::before { display: none; }

/* ---------- 关于 ---------- */
.about-hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.about-quote {
  border-left: 2px solid var(--cyan);
  padding: 6px 0 6px 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}
.about-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.about-metric {
  padding: 22px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}
.about-metric .am-v { font-size: 22px; font-weight: 700; }
.about-metric .am-v small { font-size: 11px; color: var(--muted); font-weight: 500; }
.about-metric .am-k { font-size: 11.5px; color: var(--dim); margin-top: 3px; }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.contact-card {
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}
.contact-card .cc-icon {
  width: 46px; height: 46px; border-radius: 13px;
  background: rgba(56, 214, 245, 0.09);
  color: var(--cyan);
  display: grid; place-items: center;
  margin-bottom: 16px;
}
.contact-card .cc-icon .icon { width: 22px; height: 22px; }
.contact-card h3 { margin: 0 0 6px; font-size: 15px; }
.contact-card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.7; }
.contact-card a { color: var(--cyan); }

/* 插画/网格装饰 */
.dot-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.5;
  pointer-events: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .nav-links { gap: 22px; }
  .hero-grid { gap: 36px; }
  .float-chip.c2, .float-chip.c4 { right: -2%; }
  .float-chip.c1, .float-chip.c3 { left: -2%; }
  .why-grid { gap: 36px; }
  .footer-grid { grid-template-columns: 1.2fr 0.8fr 0.9fr; }
  .footer-col:last-child { grid-column: span 2; }
}
@media (max-width: 920px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: grid; }
  .hero { padding-top: 132px; }
  .hero-grid, .product-hero-grid, .about-hero-grid, .why-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; min-height: 400px; margin-bottom: 12px; }
  .stage { width: min(360px, 82%); }
  .hero-stats { margin-top: 38px; }
  .products-grid, .industry-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr 1fr; }
  .scene-grid { grid-template-columns: 1fr 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step-card::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; padding: 42px 34px; }
  .product-hero { padding-top: 120px; }
  .spec-table td:first-child { width: 34%; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col:last-child { grid-column: auto; }
}
@media (max-width: 640px) {
  .container { width: calc(100% - 36px); }
  .section { padding: 72px 0; }
  .section-head { margin-bottom: 36px; }
  .hero { padding-top: 120px; padding-bottom: 56px; }
  .hero h1 { font-size: 38px; }
  .hero .desc { font-size: 15.5px; }
  .hero-visual { min-height: 300px; }
  .stage { width: min(308px, 86%); padding: 15px; border-radius: 22px; }
  .stage-caption { font-size: 11px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 22px 14px; }
  .stat-band-inner { grid-template-columns: 1fr 1fr; }
  .stat-item { padding: 22px 18px; border-left: 0; border-top: 1px solid var(--line); }
  .stat-item:first-child { padding-left: 18px; }
  .tech-grid, .scene-grid, .feature-grid, .key-grid, .steps, .quick-specs { grid-template-columns: 1fr; }
  .spectrum { grid-template-columns: 1fr; gap: 22px; padding: 22px; }
  .p-specs { grid-template-columns: 1fr 1fr 1fr; }
  .product-body h3 { font-size: 20px; }
  .cta-actions .btn { width: 100%; }
  .page-hero { padding: 120px 0 52px; }
  .product-hero { padding: 112px 0 56px; }
  .spec-table { font-size: 12.5px; }
  .spec-table th, .spec-table td, .spec-table tr.group td { padding: 11px 14px; }
  .spec-table td:first-child { width: 38%; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .float-chip { display: none; }
  .orbit.o3 { display: none; }
  .mobile-menu .drop-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: transparent; border: 0; padding: 2px 0 8px 18px; min-width: 0; }
  .mobile-menu .drop-menu a { padding: 8px 0; }
  .mobile-menu .drop-menu .di { display: none; }
  .company-row { flex-direction: column; gap: 4px; }
  .company-row .ck { min-width: 0; }
  .about-metrics { grid-template-columns: 1fr 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 82px;
  left: 0;
  right: 0;
  z-index: 99;
  padding: 10px 18px 20px;
  background: rgba(6, 11, 20, 0.97);
  border-bottom: 1px solid var(--line-strong);
  backdrop-filter: blur(18px);
  max-height: calc(100vh - 82px);
  overflow-y: auto;
}
.mobile-menu.open { display: block; }
.mobile-menu > a, .mobile-menu .nav-drop > a {
  display: flex;
  justify-content: space-between;
  padding: 14px 6px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--muted);
}
.mobile-menu .nav-drop > a { border-bottom: 0; }
.mobile-menu > a.active { color: var(--cyan); }
.mobile-menu .drop-menu a { font-size: 13.5px; }
.mobile-menu .drop-menu .dt span { display: block; }
.mobile-menu .nav-cta { margin-top: 16px; display: inline-flex; width: 100%; justify-content: center; }

/* 滚动显现（默认可见，进入视口时播放动画） */
.reveal { opacity: 1; transform: none; }
.reveal.in { animation: revealIn 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
.reveal-d1 { animation-delay: 0.08s; }
.reveal-d2 { animation-delay: 0.16s; }
.reveal-d3 { animation-delay: 0.24s; }
.reveal-d4 { animation-delay: 0.32s; }
@keyframes revealIn {
  from { opacity: 0.001; transform: translateY(22px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.in { opacity: 1; transform: none; animation: none; }
  .float-chip { animation: none; }
  html { scroll-behavior: auto; }
}