/* ==========================================================================
   博优途 BOYOUTU · 主样式
   主题：深空科技蓝（强制深色，不随系统主题切换，保证大屏行业气质）
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --bg: #040914;
  --bg-2: #061022;
  --bg-3: #08172d;
  --surface: rgba(255, 255, 255, .034);
  --surface-2: rgba(255, 255, 255, .058);
  --line: rgba(148, 190, 255, .12);
  --line-strong: rgba(148, 190, 255, .24);

  --ink: #eaf2ff;
  --ink-2: #a3b8d6;
  --ink-3: #6f86a8;

  --cyan: #45deff;
  --cyan-2: #189bf5;
  --blue: #3d6cff;
  --violet: #8b6cff;
  --gold: #ffc46b;

  --grad-brand: linear-gradient(96deg, #45deff 0%, #3d9bff 48%, #8b6cff 100%);
  --grad-soft: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .012));

  --radius-l: 26px;
  --radius-m: 18px;
  --radius-s: 12px;

  --shadow-lift: 0 30px 80px -30px rgba(0, 0, 0, .9), 0 0 0 1px rgba(120, 180, 255, .08);
  --shadow-glow: 0 0 60px -12px rgba(69, 222, 255, .5);

  --font-display: 'Sora', 'PingFang SC', 'HarmonyOS Sans SC', 'MiSans', 'Microsoft YaHei', sans-serif;
  --font-sans: 'Manrope', 'PingFang SC', 'HarmonyOS Sans SC', 'MiSans', 'Microsoft YaHei', system-ui, sans-serif;
  --font-cn: 'PingFang SC', 'HarmonyOS Sans SC', 'MiSans', 'Noto Sans SC', 'Microsoft YaHei', system-ui, sans-serif;

  --shell: 1240px;
  --pad: clamp(20px, 5vw, 56px);
  --nav-h: 72px;
  --sec-y: clamp(72px, 9vw, 132px);

  --ease: cubic-bezier(.22, .61, .24, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

body.nav-open { overflow: hidden; }

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
::selection { background: rgba(69, 222, 255, .28); color: #fff; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 3. 排版体系 ---------- */
.display {
  font-family: var(--font-cn);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.08;
}
.num, .mono { font-family: var(--font-display); font-feature-settings: 'tnum' 1; }

.h-sec {
  font-size: clamp(30px, 4.1vw, 52px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -.025em;
}
.h-sec .grad { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }

.lede {
  color: var(--ink-2);
  font-size: clamp(15px, 1.15vw, 17.5px);
  line-height: 1.82;
  max-width: 62ch;
}
.small { font-size: 13px; color: var(--ink-3); }

/* ---------- 4. 布局骨架 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.section { position: relative; padding-block: var(--sec-y); }
.section--tight { padding-block: clamp(52px, 6vw, 84px); }

.sec-head { max-width: 780px; margin-bottom: clamp(36px, 4.4vw, 64px); }
.sec-head .eyebrow { margin-bottom: 18px; }
.sec-head .lede { margin-top: 20px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}
.eyebrow .cn {
  font-family: var(--font-cn);
  letter-spacing: .12em;
  color: var(--ink-3);
  font-weight: 500;
  text-transform: none;
}

/* ---------- 5. 背景氛围层 ---------- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.ambient::before {
  content: '';
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(ellipse 46% 40% at 14% 4%, rgba(24, 155, 245, .22), transparent 62%),
    radial-gradient(ellipse 40% 34% at 88% 24%, rgba(139, 108, 255, .16), transparent 60%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(12, 74, 148, .28), transparent 70%);
  filter: blur(6px);
}
.ambient::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(160, 200, 255, .085) 1px, transparent 1.15px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 20%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 20%, #000 20%, transparent 78%);
  opacity: .7;
}
/* 细网格线，制造业/指挥中心气质 */
.ambient .grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(120, 180, 255, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 180, 255, .04) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: linear-gradient(to bottom, #000, transparent 55%);
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 55%);
}
main, header, footer { position: relative; z-index: 1; }

/* ---------- 6. 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 90;
  display: flex;
  align-items: center;
  transition: background .4s var(--ease), border-color .4s, backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(5, 12, 26, .74);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav__inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
  display: flex;
  align-items: center;
  gap: 26px;
}

/* Logo */
.logo { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo__mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  position: relative;
  background: linear-gradient(145deg, rgba(69, 222, 255, .95), rgba(61, 108, 255, .9) 55%, rgba(139, 108, 255, .95));
  box-shadow: 0 0 22px -4px rgba(69, 222, 255, .7), inset 0 1px 0 rgba(255, 255, 255, .5);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.logo__mark::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: 9px;
  background: linear-gradient(160deg, rgba(4, 9, 20, .55), rgba(4, 9, 20, .92));
}
.logo__mark svg { position: relative; z-index: 1; width: 19px; height: 19px; }
.logo__text { display: flex; flex-direction: column; line-height: 1.12; }
.logo__cn { font-size: 16px; font-weight: 700; letter-spacing: .06em; }
.logo__en {
  font-family: var(--font-display);
  font-size: 8.6px;
  letter-spacing: .34em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-top: 2px;
}

.nav__links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav__links a {
  position: relative;
  padding: 9px 13px;
  font-size: 14px;
  color: var(--ink-2);
  border-radius: 999px;
  transition: color .25s, background .25s;
  white-space: nowrap;
}
.nav__links a:hover { color: var(--ink); background: rgba(255, 255, 255, .05); }
.nav__links a.is-active { color: var(--ink); }
.nav__links a.is-active::after {
  content: '';
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 2px;
  height: 1.5px;
  background: var(--grad-brand);
  border-radius: 2px;
}
.nav__cta { margin-left: 10px; }

.burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
  margin-left: auto;
  position: relative;
}
.burger span {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 1.5px;
  background: var(--ink);
  transition: transform .35s var(--ease), opacity .2s;
}
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 20.5px; }
.burger span:nth-child(3) { top: 26px; }
body.nav-open .burger span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
body.nav-open .burger span:nth-child(2) { opacity: 0; }
body.nav-open .burger span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* 抽屉 */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 85;
  background: rgba(4, 9, 20, .96);
  -webkit-backdrop-filter: blur(22px);
  backdrop-filter: blur(22px);
  padding: calc(var(--nav-h) + 24px) var(--pad) 36px;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity .35s var(--ease), transform .35s var(--ease), visibility .35s;
}
body.nav-open .drawer { opacity: 1; visibility: visible; transform: none; }
.drawer a.drawer__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 16px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 20px;
  font-weight: 600;
}
.drawer a.drawer__link .idx {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .1em;
}
.drawer__foot { margin-top: auto; padding-top: 28px; display: grid; gap: 10px; }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
  transition: transform .3s var(--ease), box-shadow .3s, background .3s, border-color .3s, color .3s;
  position: relative;
  overflow: hidden;
}
.btn svg { width: 17px; height: 17px; flex-shrink: 0; transition: transform .35s var(--ease); }
.btn--primary {
  color: #041018;
  background: linear-gradient(100deg, #7ff0ff, #45deff 32%, #4aa8ff 74%, #9a7dff);
  box-shadow: 0 10px 34px -12px rgba(69, 222, 255, .8), inset 0 1px 0 rgba(255, 255, 255, .6);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 44px -12px rgba(69, 222, 255, .95); }
.btn--primary:hover svg { transform: translateX(3px); }
.btn--ghost {
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, .035);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .085); border-color: rgba(148, 190, 255, .42); transform: translateY(-2px); }
.btn--sm { height: 38px; padding: 0 17px; font-size: 13.5px; }
.btn--block { width: 100%; }

/* ---------- 8. 首屏 ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(30px, 5vw, 66px));
  padding-bottom: clamp(40px, 5vw, 72px);
  overflow: hidden;
}
.hero__inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.hero__pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  height: 32px;
  padding: 0 14px 0 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, .04);
  font-size: 12.5px;
  color: var(--ink-2);
  letter-spacing: .02em;
}
.hero__pill .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #4ff0b0;
  box-shadow: 0 0 0 4px rgba(79, 240, 176, .16);
  animation: pulse 2.4s infinite;
}
.hero__pill b { color: var(--ink); font-weight: 600; }

.hero__title {
  margin-top: 26px;
  font-size: clamp(38px, 6.4vw, 84px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -.035em;
  max-width: 15ch;
}
.hero__title .line { display: block; }
.hero__title .grad {
  background: linear-gradient(96deg, #9af1ff 0%, #45deff 24%, #4a9bff 58%, #a98bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lede {
  margin-top: 26px;
  max-width: 54ch;
  color: var(--ink-2);
  font-size: clamp(15px, 1.25vw, 17.5px);
  line-height: 1.85;
}
.hero__actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero__meta {
  margin-top: clamp(34px, 4vw, 52px);
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 48px);
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.hero__meta .item { display: flex; flex-direction: column; gap: 4px; }
.hero__meta .v {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.3vw, 30px);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1;
}
.hero__meta .v small { font-size: .5em; color: var(--cyan); margin-left: 3px; font-weight: 600; }
.hero__meta .k { font-size: 12.5px; color: var(--ink-3); letter-spacing: .04em; }

/* ---------- 9. 3D 大屏装置 ---------- */
.stage {
  position: relative;
  margin-top: clamp(40px, 5vw, 66px);
  perspective: 1600px;
  perspective-origin: 50% 30%;
}
.stage__glow {
  position: absolute;
  width: 74%;
  height: 62%;
  left: 13%;
  top: 12%;
  background: radial-gradient(ellipse at center, rgba(69, 222, 255, .34), rgba(61, 108, 255, .16) 45%, transparent 72%);
  filter: blur(46px);
  z-index: 0;
}
.screen {
  position: relative;
  z-index: 1;
  transform-style: preserve-3d;
  transform: rotateX(14deg) rotateY(-9deg) rotateZ(1.2deg);
  transition: transform .9s var(--ease-out);
  will-change: transform;
}
.screen__frame {
  position: relative;
  border-radius: 20px;
  padding: 9px;
  background: linear-gradient(155deg, #22344f, #0a1220 42%, #16263c);
  box-shadow:
    var(--shadow-lift),
    0 0 0 1px rgba(120, 190, 255, .2),
    inset 0 1px 0 rgba(255, 255, 255, .28);
}
.screen__frame::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 21px;
  background: linear-gradient(140deg, rgba(69, 222, 255, .55), transparent 32%, transparent 68%, rgba(139, 108, 255, .5));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
  pointer-events: none;
}
.screen__panel {
  border-radius: 13px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 26% 8%, rgba(23, 92, 176, .5), transparent 62%),
    radial-gradient(ellipse 50% 50% at 82% 92%, rgba(80, 52, 168, .42), transparent 64%),
    #050d1c;
  aspect-ratio: 16 / 9.4;
  position: relative;
  display: flex;
  flex-direction: column;
  container-type: inline-size;
}
/* 屏幕玻璃反光 */
.screen__panel::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(112deg, rgba(255, 255, 255, .1) 0%, rgba(255, 255, 255, .02) 22%, transparent 46%);
  pointer-events: none;
}
.screen__panel .grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(110, 180, 255, .14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(110, 180, 255, .11) 1px, transparent 1px);
  background-size: 5.6% 9%;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 50%, #000 30%, transparent 88%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 50%, #000 30%, transparent 88%);
}

/* 屏幕内顶栏 */
.hd {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 3%;
  padding: 2.2% 3% 1.6%;
}
.hd__title {
  font-size: clamp(8px, 1.55cqw, 19px);
  font-weight: 700;
  letter-spacing: .16em;
  display: flex;
  align-items: center;
  gap: .6em;
  color: #eaf6ff;
  text-shadow: 0 0 18px rgba(69, 222, 255, .75);
  flex-shrink: 0;
}
.hd__title::before,
.hd__title::after {
  content: '';
  width: clamp(10px, 3.4cqw, 46px);
  height: 1px;
  background: linear-gradient(90deg, transparent, #45deff);
}
.hd__title::after { background: linear-gradient(90deg, #45deff, transparent); }
.hd__clock {
  margin-left: auto;
  font-family: var(--font-display);
  font-size: clamp(7px, 1.15cqw, 14px);
  color: #8fb6dd;
  letter-spacing: .1em;
  white-space: nowrap;
}
.hd__tabs { display: flex; gap: .5em; }
.hd__tab {
  font-size: clamp(6px, .95cqw, 11px);
  padding: .3em .8em;
  border-radius: 999px;
  border: 1px solid rgba(120, 190, 255, .28);
  color: #8fb6dd;
}
.hd__tab.on { background: rgba(69, 222, 255, .16); color: #b8f0ff; border-color: rgba(69, 222, 255, .55); }

/* 屏幕内三栏 */
.bd {
  position: relative;
  z-index: 2;
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1.42fr 1fr;
  gap: 1.4%;
  padding: 0 3% 3%;
  min-height: 0;
}
.bd__col { display: flex; flex-direction: column; gap: 3.4%; min-height: 0; }
.card {
  position: relative;
  border-radius: clamp(3px, .7cqw, 9px);
  border: 1px solid rgba(110, 180, 255, .2);
  background: linear-gradient(165deg, rgba(28, 74, 140, .34), rgba(10, 25, 48, .42));
  padding: 2.6% 3.2%;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
.card::before,
.card::after {
  content: '';
  position: absolute;
  width: clamp(5px, 1cqw, 12px);
  height: clamp(5px, 1cqw, 12px);
  border: 1px solid rgba(69, 222, 255, .65);
}
.card::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.card::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.card__t {
  font-size: clamp(6px, 1.05cqw, 12.5px);
  color: #9dc4e8;
  letter-spacing: .1em;
  display: flex;
  align-items: center;
  gap: .5em;
  margin-bottom: 3.5%;
  flex-shrink: 0;
}
.card__t i {
  width: clamp(2px, .3cqw, 3px);
  height: 1em;
  background: #45deff;
  box-shadow: 0 0 8px #45deff;
}
.card__t b {
  margin-left: auto;
  font-family: var(--font-display);
  color: #45deff;
  font-weight: 600;
  font-size: .92em;
}
.card--fill { flex: 1; }

/* KPI 行 */
.kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 4%; margin-bottom: 3.5%; }
.kpi {
  border-radius: clamp(3px, .6cqw, 8px);
  border: 1px solid rgba(110, 180, 255, .18);
  background: linear-gradient(160deg, rgba(20, 58, 110, .5), rgba(10, 22, 44, .3));
  padding: 4% 5%;
  position: relative;
  overflow: hidden;
}
.kpi__v {
  font-family: var(--font-display);
  font-size: clamp(10px, 2.15cqw, 26px);
  font-weight: 700;
  line-height: 1;
  color: #eaf7ff;
  letter-spacing: -.01em;
  text-shadow: 0 0 14px rgba(69, 222, 255, .6);
}
.kpi__v span { font-size: .52em; color: #6fe4ff; margin-left: .12em; }
.kpi__k {
  font-size: clamp(5px, .85cqw, 10px);
  color: #86a9cc;
  margin-top: .4em;
  letter-spacing: .06em;
  white-space: nowrap;
}
.kpi__bar {
  position: absolute;
  left: 0; bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, #45deff, rgba(69, 222, 255, 0));
  width: 60%;
  animation: kbar 3.6s var(--ease) infinite;
}

/* 迷你柱状图 */
.bars {
  flex: 1;
  display: flex;
  align-items: flex-end;
  gap: 6%;
  min-height: 0;
  padding-top: 2%;
}
.bars i {
  flex: 1;
  border-radius: 1px 1px 0 0;
  background: linear-gradient(180deg, #6ff0ff, rgba(45, 130, 230, .25));
  box-shadow: 0 0 10px -2px rgba(69, 222, 255, .8);
  animation: barGrow 4s var(--ease) infinite alternate;
  transform-origin: bottom;
  min-height: 6%;
}

/* 雷达/环形 */
.donut {
  flex: 1;
  display: grid;
  place-items: center;
  min-height: 0;
}
.donut svg { width: 100%; height: 100%; max-height: 100%; overflow: visible; }
.donut__c { stroke-dasharray: 260; animation: dashSpin 9s linear infinite; transform-origin: center; }

/* 中心地图 */
.map-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  border-radius: clamp(3px, .7cqw, 9px);
  border: 1px solid rgba(110, 180, 255, .18);
  background: radial-gradient(ellipse 70% 60% at 50% 52%, rgba(26, 96, 180, .42), transparent 70%);
  overflow: hidden;
  display: grid;
  place-items: center;
}
.map-wrap svg { width: 88%; height: 88%; overflow: visible; }
.map__region {
  fill: rgba(40, 120, 210, .16);
  stroke: rgba(90, 200, 255, .62);
  stroke-width: .8;
  vector-effect: non-scaling-stroke;
}
.map__region.hot { fill: rgba(69, 222, 255, .26); }
.map__pulse {
  fill: none;
  stroke: #7bf0ff;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  transform-origin: center;
  animation: mapPulse 2.6s ease-out infinite;
}
.map__dot { fill: #b8f8ff; filter: drop-shadow(0 0 3px #45deff); }
.map__link {
  fill: none;
  stroke: rgba(120, 225, 255, .55);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 4 5;
  animation: dashMove 2.2s linear infinite;
}
.map-badge {
  position: absolute;
  right: 3%; top: 5%;
  display: flex;
  flex-direction: column;
  gap: .25em;
  align-items: flex-end;
}
.map-badge span {
  font-family: var(--font-display);
  font-size: clamp(5px, .82cqw, 10px);
  color: #8fb6dd;
  background: rgba(8, 22, 42, .72);
  border: 1px solid rgba(110, 180, 255, .22);
  border-radius: 3px;
  padding: .15em .5em;
  white-space: nowrap;
}

/* 列表行 */
.rows { display: flex; flex-direction: column; gap: 5.5%; flex: 1; min-height: 0; justify-content: center; }
.row { display: flex; align-items: center; gap: 3.5%; min-width: 0; }
.row__n {
  font-family: var(--font-display);
  font-size: clamp(5px, .88cqw, 10.5px);
  color: #7fa6c9;
  width: 1.6em;
  flex-shrink: 0;
}
.row__n.top { color: #ffca6b; }
.row__label {
  font-size: clamp(5px, .88cqw, 10.5px);
  color: #cfe4f7;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 34%;
  flex-shrink: 0;
}
.row__track {
  flex: 1;
  height: clamp(2px, .5cqw, 6px);
  border-radius: 999px;
  background: rgba(110, 180, 255, .13);
  overflow: hidden;
}
.row__track i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(69, 222, 255, .45), #45deff);
  box-shadow: 0 0 8px rgba(69, 222, 255, .8);
  animation: rowGrow 5s var(--ease) infinite alternate;
  transform-origin: left;
}
.row__v {
  font-family: var(--font-display);
  font-size: clamp(5px, .85cqw, 10px);
  color: #8fe6ff;
  width: 2.6em;
  text-align: right;
  flex-shrink: 0;
}

/* 滚动播报 */
.ticker {
  position: relative;
  z-index: 2;
  margin: 0 3% 2.4%;
  display: flex;
  align-items: center;
  gap: 2%;
  border: 1px solid rgba(110, 180, 255, .16);
  border-radius: 4px;
  padding: 1.1% 2%;
  background: rgba(8, 22, 42, .6);
  overflow: hidden;
}
.ticker__tag {
  font-size: clamp(5px, .8cqw, 9.5px);
  color: #041018;
  background: #45deff;
  border-radius: 2px;
  padding: .15em .5em;
  letter-spacing: .08em;
  flex-shrink: 0;
  font-weight: 700;
}
.ticker__body { flex: 1; overflow: hidden; white-space: nowrap; }
.ticker__body span {
  display: inline-block;
  font-size: clamp(5px, .82cqw, 9.5px);
  color: #8fb6dd;
  padding-left: 100%;
  animation: ticker 26s linear infinite;
}
.ticker__body span b { color: #b8f0ff; font-weight: 500; }

/* 屏幕支架 */
.stage__base {
  position: relative;
  z-index: 0;
  height: clamp(26px, 4vw, 52px);
  margin: 0 auto;
  width: 46%;
  border-radius: 0 0 40% 40% / 0 0 100% 100%;
  background: linear-gradient(180deg, #1b2c44, rgba(6, 16, 34, 0));
  margin-top: -6px;
  filter: blur(.4px);
  opacity: .8;
}

/* 首屏浮动统计条 */
.stage__float {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 15px;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: rgba(8, 20, 38, .82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, .9);
  font-size: 12.5px;
  color: var(--ink-2);
  animation: floaty 6s ease-in-out infinite;
}
.stage__float b { color: var(--ink); font-family: var(--font-display); font-size: 15px; }
.stage__float .ico {
  width: 30px; height: 30px; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(150deg, rgba(69, 222, 255, .22), rgba(61, 108, 255, .12));
  border: 1px solid rgba(69, 222, 255, .3);
  flex-shrink: 0;
}
.stage__float .ico svg { width: 15px; height: 15px; stroke: var(--cyan); }
.stage__float--a { left: -2%; top: 20%; animation-delay: -.4s; }
.stage__float--b { right: -1%; bottom: 16%; animation-delay: -3s; }

/* ---------- 10. 信任条 ---------- */
.trust {
  border-block: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, .018), transparent);
}
.trust__inner {
  display: flex;
  align-items: center;
  gap: clamp(20px, 4vw, 56px);
  padding-block: 22px;
  flex-wrap: wrap;
}
.trust__label {
  font-size: 12.5px;
  color: var(--ink-3);
  letter-spacing: .1em;
  white-space: nowrap;
  flex-shrink: 0;
}
.trust__list {
  display: flex;
  gap: clamp(18px, 3.4vw, 46px);
  flex-wrap: wrap;
  align-items: center;
}
.trust__list span {
  font-size: clamp(13px, 1.1vw, 15px);
  font-weight: 600;
  letter-spacing: .06em;
  color: rgba(234, 242, 255, .5);
  transition: color .3s;
  white-space: nowrap;
}
.trust__list span:hover { color: rgba(234, 242, 255, .92); }

/* ---------- 11. 产品矩阵 ---------- */
.products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.pcard {
  position: relative;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: var(--grad-soft);
  padding: clamp(24px, 2.4vw, 32px);
  overflow: hidden;
  transition: border-color .4s, transform .5s var(--ease), background .4s;
  isolation: isolate;
}
.pcard::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 0%), rgba(69, 222, 255, .55), transparent 62%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .45s;
  pointer-events: none;
}
.pcard::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(69, 222, 255, .1), transparent 65%);
  opacity: 0;
  transition: opacity .45s;
  z-index: -1;
}
.pcard:hover { border-color: rgba(148, 190, 255, .22); transform: translateY(-4px); }
.pcard:hover::before, .pcard:hover::after { opacity: 1; }

.pcard__ico {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: linear-gradient(155deg, rgba(69, 222, 255, .16), rgba(61, 108, 255, .06));
  border: 1px solid rgba(69, 222, 255, .26);
  margin-bottom: 20px;
  transition: transform .45s var(--ease), box-shadow .45s;
}
.pcard:hover .pcard__ico { transform: translateY(-2px) scale(1.04); box-shadow: 0 0 26px -8px rgba(69, 222, 255, .8); }
.pcard__ico svg { width: 22px; height: 22px; stroke: var(--cyan); stroke-width: 1.5; fill: none; }
.pcard__en {
  font-family: var(--font-display);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 7px;
}
.pcard__name { font-size: clamp(18px, 1.45vw, 21px); font-weight: 700; letter-spacing: -.01em; line-height: 1.35; }
.pcard__desc { margin-top: 12px; font-size: 14px; line-height: 1.78; color: var(--ink-2); }
.pcard__tags { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 7px; }
.tag {
  font-size: 11.5px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-3);
  background: rgba(255, 255, 255, .025);
  letter-spacing: .02em;
  white-space: nowrap;
}

/* ---------- 12. 行业方案（Tabs） ---------- */
.ind {
  display: grid;
  grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}
.ind__tabs { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.ind__tab {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 17px 4px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  color: var(--ink-3);
  transition: color .3s, padding .4s var(--ease);
  position: relative;
}
.ind__tab .n {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: .08em;
  opacity: .7;
  transition: color .3s;
}
.ind__tab .t { font-size: 16px; font-weight: 600; }
.ind__tab .en {
  margin-left: auto;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  opacity: .55;
  white-space: nowrap;
}
.ind__tab::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width .4s var(--ease);
}
.ind__tab:hover { color: var(--ink-2); }
.ind__tab.is-on { color: var(--ink); padding-left: 10px; }
.ind__tab.is-on .n { color: var(--cyan); }
.ind__tab.is-on::before { width: 10px; }

.ind__panel {
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background:
    radial-gradient(ellipse 80% 60% at 100% 0%, rgba(61, 108, 255, .14), transparent 60%),
    var(--grad-soft);
  padding: clamp(26px, 3vw, 42px);
  min-height: 340px;
  position: relative;
  overflow: hidden;
}
.ind__panel .amb {
  position: absolute;
  right: -12%;
  bottom: -30%;
  width: 62%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(69, 222, 255, .14);
  box-shadow: inset 0 0 80px rgba(69, 222, 255, .08);
  pointer-events: none;
}
.ind__panel .amb::after {
  content: '';
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  border: 1px dashed rgba(69, 222, 255, .16);
  animation: spin 26s linear infinite;
}
.ind__body { position: relative; z-index: 1; animation: fadeUp .5s var(--ease) both; }
.ind__title {
  font-size: clamp(24px, 2.5vw, 34px);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.25;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.ind__title em {
  font-style: normal;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 600;
}
.ind__desc { margin-top: 14px; color: var(--ink-2); font-size: 15px; line-height: 1.8; max-width: 46ch; }
.ind__points { margin-top: 26px; display: grid; gap: 11px; }
.ind__points li {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 14.5px;
  color: rgba(234, 242, 255, .86);
}
.ind__points li svg { width: 16px; height: 16px; flex-shrink: 0; stroke: var(--cyan); fill: none; stroke-width: 2; }
.ind__link {
  margin-top: 30px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
}
.ind__link svg { width: 15px; height: 15px; transition: transform .35s var(--ease); }
.ind__link:hover svg { transform: translateX(4px); }

/* ---------- 13. 数字孪生展示 ---------- */
.twin {
  position: relative;
  border-radius: var(--radius-l);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 70% at 50% 110%, rgba(24, 120, 220, .3), transparent 68%),
    #050d1c;
  box-shadow: var(--shadow-lift);
}
.twin__canvas { width: 100%; aspect-ratio: 21 / 10; display: block; touch-action: pan-y; }
.twin__hud {
  position: absolute;
  inset: 0;
  padding: clamp(16px, 2.2vw, 28px);
  display: flex;
  flex-direction: column;
  pointer-events: none;
}
.twin__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.twin__title {
  font-size: clamp(13px, 1.1vw, 15px);
  font-weight: 600;
  letter-spacing: .06em;
  display: flex;
  align-items: center;
  gap: 9px;
}
.twin__title i {
  width: 6px; height: 6px; border-radius: 50%;
  background: #4ff0b0; box-shadow: 0 0 0 4px rgba(79, 240, 176, .15);
  animation: pulse 2.4s infinite;
}
.twin__legend {
  display: flex;
  gap: 14px;
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .04em;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.twin__legend span { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.twin__legend i { width: 6px; height: 6px; border-radius: 50%; }
.twin__kpis {
  margin-top: auto;
  display: flex;
  gap: clamp(14px, 2.6vw, 40px);
  flex-wrap: wrap;
}
.twin__kpi { min-width: 78px; }
.twin__kpi .v {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 28px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: #eafaff;
  text-shadow: 0 0 22px rgba(69, 222, 255, .5);
}
.twin__kpi .v small { font-size: .5em; color: var(--cyan); margin-left: 2px; }
.twin__kpi .k { font-size: 11.5px; color: var(--ink-3); margin-top: 6px; letter-spacing: .04em; }
.twin__hint {
  position: absolute;
  right: clamp(16px, 2.2vw, 28px);
  bottom: clamp(16px, 2.2vw, 28px);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .06em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.twin__hint svg { width: 13px; height: 13px; stroke: var(--ink-3); fill: none; }

.twin-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--line);
}
.twin-strip > div {
  background: #060f1f;
  padding: 20px 22px;
  transition: background .35s;
}
.twin-strip > div:hover { background: #08152a; }
.twin-strip b {
  display: block;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 7px;
}
.twin-strip p { font-size: 13.5px; color: var(--ink-2); line-height: 1.7; margin: 0; }

/* ---------- 14. 数据成绩 ---------- */
.stats {
  border-block: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(24, 90, 176, .08), transparent 60%);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.stat {
  background: #050d1a;
  padding: clamp(24px, 2.8vw, 38px) clamp(18px, 2.2vw, 30px);
  position: relative;
  overflow: hidden;
}
.stat::after {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(69, 222, 255, .6), transparent);
  opacity: 0;
  transition: opacity .4s;
}
.stat:hover::after { opacity: 1; }
.stat__v {
  font-family: var(--font-display);
  font-size: clamp(34px, 3.6vw, 50px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  background: linear-gradient(180deg, #ffffff, #9ad8f5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.stat__v small { font-size: .42em; color: var(--cyan); -webkit-text-fill-color: var(--cyan); font-weight: 600; }
.stat__k { margin-top: 12px; font-size: 13.5px; color: var(--ink-2); letter-spacing: .04em; }

/* ---------- 15. 案例 ---------- */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.case {
  position: relative;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: var(--grad-soft);
  padding: clamp(24px, 2.4vw, 30px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform .5s var(--ease), border-color .4s;
}
.case:hover { transform: translateY(-5px); border-color: rgba(148, 190, 255, .24); }
.case__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.case__tag {
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--cyan);
  border: 1px solid rgba(69, 222, 255, .3);
  background: rgba(69, 222, 255, .07);
  padding: 3px 10px;
  border-radius: 999px;
}
.case__idx {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .12em;
}
.case__title { font-size: clamp(18px, 1.45vw, 20px); font-weight: 700; line-height: 1.4; letter-spacing: -.01em; }
.case__desc { margin-top: 11px; font-size: 14px; line-height: 1.78; color: var(--ink-2); flex: 1; }
.case__metrics {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.case__metrics .m { display: flex; flex-direction: column; gap: 3px; }
.case__metrics .v {
  font-family: var(--font-display);
  font-size: clamp(16px, 1.5vw, 20px);
  font-weight: 700;
  color: #dff6ff;
  letter-spacing: -.01em;
  line-height: 1.1;
}
.case__metrics .u { font-size: 11px; color: var(--ink-3); }

/* 当前无实拍图，用结构化视觉替代"假截图" */
.case__visual {
  position: relative;
  aspect-ratio: 16 / 7;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: radial-gradient(ellipse 60% 80% at 20% 0%, rgba(61, 108, 255, .22), transparent 60%), rgba(3, 9, 20, .7);
  overflow: hidden;
  margin-bottom: 20px;
  display: grid;
  place-items: center;
}
.case__visual svg { width: 88%; height: 88%; }

/* ---------- 16. 技术能力 ---------- */
.techwrap { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.tech-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.tech-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left .4s var(--ease);
}
.tech-item:hover { padding-left: 8px; }
.tech-item .n {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: .08em;
  padding-top: 5px;
}
.tech-item h4 { font-size: 16px; font-weight: 700; letter-spacing: .01em; }
.tech-item p { margin-top: 7px; font-size: 13.5px; line-height: 1.78; color: var(--ink-2); }

.codecard {
  position: relative;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: #060e1c;
  overflow: hidden;
  box-shadow: var(--shadow-lift);
}
.codecard__bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .02);
}
.codecard__bar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, .14); }
.codecard__bar i:nth-child(1) { background: rgba(255, 95, 86, .5); }
.codecard__bar i:nth-child(2) { background: rgba(255, 189, 46, .5); }
.codecard__bar i:nth-child(3) { background: rgba(39, 201, 63, .5); }
.codecard__bar span {
  margin-left: 8px;
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .06em;
}
.codecard pre {
  margin: 0;
  padding: 20px;
  overflow-x: auto;
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.85;
  color: #b9cee8;
  -webkit-overflow-scrolling: touch;
}
.codecard .k { color: #8b9cff; }
.codecard .s { color: #6fe4b8; }
.codecard .c { color: #4e6482; }
.codecard .f { color: #ffca6b; }
.codecard .n { color: #7fe2ff; }
.codecard__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 16px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, .015);
}
.codecard__foot .tag { font-family: var(--font-display); font-size: 10.5px; letter-spacing: .06em; }

/* ---------- 17. Logo 墙 ---------- */
.logos {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  display: grid;
  gap: 14px;
}
.logos__row { display: flex; width: max-content; gap: 14px; animation: marquee 46s linear infinite; }
.logos__row.rev { animation-direction: reverse; animation-duration: 54s; }
.logos:hover .logos__row { animation-play-state: paused; }
.client {
  flex: 0 0 auto;
  width: clamp(150px, 15vw, 196px);
  height: 76px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .022);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: border-color .35s, background .35s, transform .35s var(--ease);
}
.client:hover { border-color: rgba(148, 190, 255, .28); background: rgba(255, 255, 255, .05); transform: translateY(-2px); }
.client b { font-size: 15px; font-weight: 600; letter-spacing: .1em; color: rgba(234, 242, 255, .72); }
.client span { font-family: var(--font-display); font-size: 9px; letter-spacing: .16em; color: var(--ink-3); text-transform: uppercase; }

/* ---------- 18. 交付流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative; }
.flow__line {
  position: absolute;
  left: 0; right: 0;
  top: 19px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 8%, var(--line-strong) 92%, transparent);
}
.flow::after {
  content: '';
  position: absolute;
  left: 0; top: 19px;
  height: 1px;
  width: var(--flow-progress, 0%);
  background: linear-gradient(90deg, rgba(69, 222, 255, .1), var(--cyan));
  box-shadow: 0 0 14px rgba(69, 222, 255, .7);
  transition: width 1.4s var(--ease-out);
}
.flow__step { position: relative; padding: 0 clamp(6px, 1.4vw, 20px) 0 0; }
.flow__dot {
  width: 39px; height: 39px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: #071122;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink-2);
  position: relative;
  z-index: 2;
  transition: border-color .4s, color .4s, box-shadow .4s, background .4s;
}
.flow__step.is-on .flow__dot {
  border-color: var(--cyan);
  color: #041018;
  background: linear-gradient(150deg, #8ff2ff, #45deff);
  box-shadow: 0 0 0 5px rgba(69, 222, 255, .1), 0 0 28px -4px rgba(69, 222, 255, .9);
}
.flow__step h4 { margin-top: 20px; font-size: 15.5px; font-weight: 700; }
.flow__step p { margin-top: 8px; font-size: 13px; line-height: 1.75; color: var(--ink-2); padding-right: 4px; }

/* ---------- 19. 关于 ---------- */
.about { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .95fr); gap: clamp(30px, 5vw, 72px); align-items: center; }
.about__story p { color: var(--ink-2); font-size: 15px; line-height: 1.95; margin-bottom: 16px; }
.about__story p:last-child { margin-bottom: 0; }
.about__quote {
  border-left: 2px solid rgba(69, 222, 255, .45);
  padding-left: 18px;
  color: var(--ink) !important;
  font-size: 15.5px !important;
}
.about__nums {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.about__nums > div { background: #060f1e; padding: 26px 24px; }
.about__nums .v {
  font-family: var(--font-display);
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1;
  color: #e8faff;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.about__nums .v small { font-size: .45em; color: var(--cyan); font-weight: 600; }
.about__nums .k { font-size: 12.5px; color: var(--ink-3); margin-top: 9px; letter-spacing: .05em; }
.about__badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }

/* ---------- 20. 新闻 ---------- */
.news { border-top: 1px solid var(--line); }
.news a.item {
  display: grid;
  grid-template-columns: 92px 74px 1fr 28px;
  align-items: center;
  gap: 18px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
  transition: background .35s, padding .4s var(--ease);
}
.news a.item:hover { background: rgba(255, 255, 255, .022); padding-left: 12px; }
.news .d { font-family: var(--font-display); font-size: 12px; color: var(--ink-3); letter-spacing: .06em; }
.news .nch {
  font-size: 11px;
  color: var(--cyan);
  border: 1px solid rgba(69, 222, 255, .24);
  border-radius: 999px;
  padding: 2px 9px;
  justify-self: start;
}
.news .t { font-size: 15.5px; color: var(--ink); transition: color .3s; line-height: 1.5; }
.news a.item:hover .t { color: var(--cyan); }
.news .arw { stroke: var(--ink-3); fill: none; width: 17px; height: 17px; transition: transform .35s var(--ease), stroke .3s; justify-self: end; }
.news a.item:hover .arw { transform: translateX(4px); stroke: var(--cyan); }

/* ---------- 21. 联系 CTA ---------- */
.cta {
  position: relative;
  border-radius: clamp(20px, 2.6vw, 32px);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 120% at 12% 0%, rgba(24, 130, 230, .34), transparent 62%),
    radial-gradient(ellipse 60% 100% at 92% 100%, rgba(120, 90, 230, .28), transparent 60%),
    linear-gradient(160deg, #071428, #050c18);
  padding: clamp(30px, 4.4vw, 60px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(30px, 4vw, 60px);
  align-items: center;
  box-shadow: var(--shadow-lift);
}
.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(120, 180, 255, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 180, 255, .05) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse 80% 90% at 20% 10%, #000, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 20% 10%, #000, transparent 72%);
  pointer-events: none;
}
.cta__copy { position: relative; }
.cta h2 {
  font-size: clamp(27px, 3.3vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.025em;
  margin-top: 16px;
}
.cta p { margin-top: 16px; color: var(--ink-2); font-size: 14.5px; line-height: 1.85; max-width: 42ch; }
.cta__contacts { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px 26px; }
.cta__contacts a, .cta__contacts span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--ink-2);
  transition: color .3s;
}
.cta__contacts a:hover { color: var(--cyan); }
.cta__contacts svg { width: 15px; height: 15px; stroke: var(--cyan); fill: none; stroke-width: 1.6; flex-shrink: 0; }

.form {
  position: relative;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: rgba(4, 10, 22, .58);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  padding: clamp(20px, 2.4vw, 28px);
  display: grid;
  gap: 12px;
}
.field { position: relative; }
.field label {
  position: absolute;
  left: 14px;
  top: 12px;
  font-size: 13px;
  color: var(--ink-3);
  pointer-events: none;
  transition: all .25s var(--ease);
}
.field input, .field textarea, .field select {
  width: 100%;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  padding: 20px 14px 8px;
  transition: border-color .3s, background .3s;
  -webkit-appearance: none;
  appearance: none;
}
.field textarea { resize: vertical; min-height: 84px; padding-top: 24px; line-height: 1.6; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: rgba(69, 222, 255, .55);
  background: rgba(255, 255, 255, .06);
}
.field input:focus + label,
.field input:not(:placeholder-shown) + label,
.field textarea:focus + label,
.field textarea:not(:placeholder-shown) + label {
  top: 6px;
  font-size: 10.5px;
  color: var(--cyan);
  letter-spacing: .04em;
}
.field--select label { top: 6px; font-size: 10.5px; color: var(--ink-3); letter-spacing: .04em; }
.field select { padding-top: 22px; color: var(--ink); background-image: none; }
.field select option { background: #0a1424; color: var(--ink); }
.form__note { font-size: 11.5px; color: var(--ink-3); text-align: center; line-height: 1.6; }
.form__ok {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(79, 240, 176, .3);
  background: rgba(79, 240, 176, .08);
  font-size: 13.5px;
  color: #a8f5d2;
}
.form__ok.is-on { display: flex; animation: fadeUp .4s var(--ease) both; }
.form__ok svg { width: 17px; height: 17px; stroke: #4ff0b0; fill: none; stroke-width: 2.2; flex-shrink: 0; }

/* ---------- 22. 页脚 ---------- */
.foot { border-top: 1px solid var(--line); padding-block: clamp(44px, 5vw, 72px) 30px; background: linear-gradient(180deg, transparent, rgba(3, 8, 17, .8)); }
.foot__top {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) repeat(3, minmax(0, .75fr));
  gap: clamp(24px, 3.4vw, 48px);
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}
.foot__brand p { margin-top: 18px; font-size: 13px; line-height: 1.85; color: var(--ink-3); max-width: 34ch; }
.foot__col h5 {
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
  margin-bottom: 16px;
  font-family: var(--font-display);
}
.foot__col a { display: block; font-size: 13.5px; color: var(--ink-2); padding: 5px 0; transition: color .25s; }
.foot__col a:hover { color: var(--cyan); }
.foot__bot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  font-size: 12px;
  color: var(--ink-3);
}
.foot__bot .note { max-width: 62ch; line-height: 1.7; }
.foot__bot .links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------- 23. 动效 ---------- */
[data-rise] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
  transition-delay: var(--d, 0ms);
}
[data-rise].is-in { opacity: 1; transform: none; }

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes kbar { 0% { width: 20%; opacity: .4; } 50% { width: 88%; opacity: 1; } 100% { width: 20%; opacity: .4; } }
@keyframes barGrow { from { transform: scaleY(.55); opacity: .65; } to { transform: scaleY(1); opacity: 1; } }
@keyframes rowGrow { from { transform: scaleX(.78); } to { transform: scaleX(1); } }
@keyframes dashMove { to { stroke-dashoffset: -18; } }
@keyframes dashSpin { to { transform: rotate(360deg); } }
@keyframes mapPulse { 0% { r: 3; opacity: .9; } 70% { r: 14; opacity: 0; } 100% { r: 14; opacity: 0; } }
@keyframes ticker { to { transform: translateX(-100%); } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes shimmer { to { background-position: 200% 0; } }

/* ---------- 24. 响应式 ---------- */
@media (max-width: 1080px) {
  .products { grid-template-columns: repeat(2, 1fr); }
  .cases { grid-template-columns: 1fr; }
  .case { flex-direction: row; gap: 24px; align-items: flex-start; }
  .case__visual { margin-bottom: 0; width: 34%; flex-shrink: 0; aspect-ratio: 4 / 3; }
  .case > div:last-child { flex: 1; min-width: 0; }
  .case__metrics { grid-template-columns: repeat(3, 1fr); }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); gap: 30px 0; }
  .flow__line, .flow::after { display: none; }
  .techwrap, .about { grid-template-columns: 1fr; }
  .about__nums { order: -1; }
  .cta { grid-template-columns: 1fr; }
  .twin-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav__links, .nav__cta { display: none; }
  .burger { display: block; }
  .ind { grid-template-columns: 1fr; }
  .ind__tabs {
    flex-direction: row;
    overflow-x: auto;
    border-top: 0;
    border-bottom: 1px solid var(--line);
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .ind__tabs::-webkit-scrollbar { display: none; }
  .ind__tab {
    border-bottom: 0;
    padding: 14px 16px;
    white-space: nowrap;
    flex-shrink: 0;
    position: relative;
  }
  .ind__tab::before { display: none; }
  .ind__tab::after {
    content: '';
    position: absolute;
    left: 16px; right: 16px; bottom: -1px;
    height: 2px;
    background: var(--grad-brand);
    border-radius: 2px;
    opacity: 0;
    transition: opacity .3s;
  }
  .ind__tab.is-on { padding-left: 16px; }
  .ind__tab.is-on::after { opacity: 1; }
  .ind__tab .en { display: none; }
  .ind__panel { min-height: 0; }
  .foot__top { grid-template-columns: 1fr 1fr; gap: 30px 24px; }
  .foot__brand { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  :root { --nav-h: 62px; }
  html { scroll-padding-top: 68px; }
  body { font-size: 15px; }

  .hero__title { max-width: 100%; font-size: clamp(32px, 9.4vw, 46px); letter-spacing: -.03em; }
  .hero__lede { font-size: 14.5px; }
  .hero__actions .btn { flex: 1 1 46%; padding: 0 14px; font-size: 14px; }
  .hero__meta { gap: 18px 26px; }
  .hero__meta .item { flex: 1 1 40%; }

  /* 3D 装置在手机上改为主视角，避免透视畸变挤压文字 */
  .stage { perspective: 1200px; margin-top: 34px; }
  .screen { transform: rotateX(6deg) rotateY(-3deg) scale(1); }
  .screen__frame { padding: 5px; border-radius: 14px; }
  .screen__panel { aspect-ratio: 16 / 11; border-radius: 10px; }
  .bd { grid-template-columns: 1fr 1.25fr; gap: 2.2%; }
  .bd__col--right { display: none; }
  .hd__tabs { display: none; }
  .ticker { display: none; }
  .stage__float { display: none; }
  .stage__base { height: 22px; width: 60%; }

  .trust__inner { padding-block: 18px; gap: 12px 20px; }
  .trust__list { gap: 12px 20px; }
  .trust__list span { font-size: 12.5px; }

  .products { grid-template-columns: 1fr; gap: 14px; }
  .pcard { padding: 22px; }
  .pcard__desc { font-size: 13.5px; }

  .case { flex-direction: column; gap: 0; padding: 22px; }
  .case__visual { width: 100%; aspect-ratio: 16 / 7; margin-bottom: 18px; }

  .stats__grid { grid-template-columns: 1fr 1fr; }
  .stat { padding: 20px 16px; }
  .stat__k { font-size: 12px; margin-top: 8px; }

  .flow { grid-template-columns: 1fr; gap: 0; }
  .flow__step { padding: 0 0 22px 0; display: grid; grid-template-columns: 39px 1fr; column-gap: 16px; }
  .flow__step::before {
    content: '';
    position: absolute;
    left: 19px; top: 39px; bottom: 0;
    width: 1px;
    background: var(--line);
  }
  .flow__step:last-child::before { display: none; }
  .flow__step h4 { margin-top: 8px; }
  .flow__step p { margin-top: 4px; grid-column: 2; }
  .flow__step > *:not(.flow__dot) { grid-column: 2; }
  .flow__dot { grid-row: 1 / span 3; }

  .news a.item { grid-template-columns: 1fr 24px; gap: 6px 12px; padding: 18px 2px; }
  .news .d { grid-column: 1; font-size: 11px; }
  .news .ch { grid-column: 1; }
  .news .t { grid-column: 1; grid-row: 2; }
  .news .arw { grid-column: 2; grid-row: 1 / span 2; }
  .news .nch { display: none; }

  .cta { padding: 26px 20px; }
  .twin__canvas { aspect-ratio: 4 / 3.6; }
  .twin__hud { padding: 14px; }
  .twin__kpis { gap: 16px; }
  .twin__kpi .k { font-size: 10px; }
  .twin__hint { display: none; }
  .twin-strip { grid-template-columns: 1fr; margin-top: 14px; }
  .twin-strip > div { padding: 16px 18px; }

  .foot__top { grid-template-columns: 1fr 1fr; }
  .foot__bot { flex-direction: column; align-items: flex-start; }

  .sec-head { margin-bottom: 30px; }
}

@media (max-width: 420px) {
  .hero__actions .btn { flex: 1 1 100%; }
  .screen__panel { aspect-ratio: 16 / 12.5; }
  .bd { grid-template-columns: 1fr; }
  .bd__col--left { display: none; }
  .kpi__k { white-space: normal; }
  .form { padding: 18px; }
  .cta__contacts { gap: 8px 18px; }
}

/* 横屏手机 / 矮屏 */
@media (max-height: 520px) and (orientation: landscape) {
  .hero { padding-top: calc(var(--nav-h) + 20px); }
  .hero__title { font-size: clamp(28px, 5vw, 46px); }
}

/* ---------- 25. 可访问性 / 降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-rise] { opacity: 1; transform: none; }
  .screen { transform: none; }
}

/* 微信内嵌浏览器（X5 / 老 WebKit）兜底 */
.wechat .screen__frame { box-shadow: 0 20px 60px -30px rgba(0, 0, 0, .9), 0 0 0 1px rgba(120, 190, 255, .2); }
.wechat .nav.is-stuck { background: rgba(5, 12, 26, .97); }
.wechat .stage__float, .wechat .ambient::after { display: none; }

@media print {
  .nav, .drawer, .ambient, .twin, .stage__float { display: none !important; }
  body { background: #fff; color: #000; }
}

/* ---------- 26. 环境适配（微信内核 / 图标字体不可用场景） ---------- */
/* 微信内不使用 backdrop-filter，避免 X5 内核闪烁与降帧 */
.wechat .nav.is-stuck,
.wechat .stage__float,
.wechat .form {
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.wechat .stage__float { background: #0a1628; }
.wechat .form { background: rgba(6, 14, 28, .92); }

/* 移动端顶部胶囊防溢出 */
@media (max-width: 760px) {
  .hero__pill {
    height: auto;
    min-height: 30px;
    padding: 5px 12px 5px 9px;
    font-size: 11px;
    line-height: 1.55;
    max-width: 100%;
  }
}

/* 页脚备案号链接（cms.js 动态注入 #footIcp） */
.foot__bot .links a {
  color: var(--ink-3, #8fa7c4);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: .02em;
  transition: color .2s;
}
.foot__bot .links a:hover { color: var(--cyan, #45deff); }