:root {
  --blue: #0878f9;
  --blue-deep: #075dcc;
  --cyan: #13bfd5;
  --violet: #6b63e8;
  --green: #20a979;
  --ink: #152238;
  --text: #34445a;
  --muted: #67778d;
  --line: #dce7f2;
  --surface: #f4f8fc;
  --surface-blue: #edf6ff;
  --navy: #111a38;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(39, 83, 128, 0.12);
  --header-height: 76px;
  --z-header: 50;
  --z-dropdown: 40;
  --z-floating: 30;
  color-scheme: light;
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: var(--white);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

img {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3,
strong {
  color: var(--ink);
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

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

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  color: white;
  background: var(--blue);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid rgba(8, 120, 249, 0.4);
  outline-offset: 3px;
}

main[tabindex="-1"]:focus {
  outline: none;
}

[hidden] {
  display: none !important;
}

.initial-loader {
  display: grid;
  min-height: 100vh;
  place-items: center;
  color: var(--blue);
  font-size: 20px;
  font-weight: 700;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(220, 231, 242, 0.9);
  backdrop-filter: blur(18px);
}

.nav-shell {
  display: flex;
  align-items: center;
  width: min(1280px, calc(100% - 48px));
  height: 100%;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 174px;
  min-height: 48px;
  gap: 10px;
  flex: 0 0 auto;
}

.brand > span:last-child {
  display: grid;
  line-height: 1.1;
}

.brand strong {
  font-size: 19px;
  font-weight: 750;
}

.brand small {
  margin-top: 4px;
  color: #8090a5;
  font-size: 8px;
  letter-spacing: 1.8px;
}

.brand-mark {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
}

.brand-mark::before,
.brand-mark::after,
.brand-mark i,
.brand-mark b {
  position: absolute;
  display: block;
  content: "";
}

.brand-mark::before {
  left: 4px;
  top: 5px;
  width: 27px;
  height: 27px;
  border: 4px solid var(--blue);
  border-right-color: transparent;
  border-radius: 50%;
  transform: rotate(-28deg);
}

.brand-mark::after {
  left: 13px;
  top: 2px;
  width: 6px;
  height: 27px;
  background: var(--blue);
  transform: skew(-30deg);
}

.brand-mark i {
  left: 9px;
  top: 22px;
  width: 25px;
  height: 5px;
  background: var(--cyan);
  transform: skew(-26deg);
}

.brand-mark b {
  left: 20px;
  top: 11px;
  width: 12px;
  height: 5px;
  background: white;
  transform: skew(-26deg);
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  margin: 0 auto;
  gap: 4px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 16px;
  color: #27354a;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: color 180ms ease;
}

.nav-link::after {
  position: absolute;
  right: 16px;
  bottom: -14px;
  left: 16px;
  height: 3px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--blue);
}

.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link > span {
  margin-left: 6px;
  font-size: 15px;
}

.nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.mega-menu {
  position: absolute;
  top: calc(100% - 4px);
  left: 50%;
  z-index: var(--z-dropdown);
  width: 760px;
  padding: 22px;
  background: white;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.nav-item:nth-of-type(4) .mega-menu {
  left: auto;
  right: -130px;
  width: 680px;
  transform: translateY(12px);
}

.nav-item:hover .mega-menu,
.nav-item:focus-within .mega-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.nav-item:nth-of-type(4):hover .mega-menu,
.nav-item:nth-of-type(4):focus-within .mega-menu {
  transform: translateY(0);
}

.mega-label {
  display: block;
  margin-bottom: 14px;
  color: #8493a7;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
}

.mega-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.mega-links a {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 12px;
  min-height: 72px;
  padding: 11px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease;
}

.mega-links a:hover {
  background: var(--surface);
  border-color: var(--line);
}

.mega-links a > span {
  display: grid;
  min-width: 0;
}

.mega-links b {
  color: var(--ink);
  font-size: 14px;
}

.mega-links small {
  display: -webkit-box;
  margin-top: 3px;
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.mini-mark {
  position: relative;
  display: inline-block;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(8, 120, 249, 0.18);
  background: #f2f8ff;
}

.mini-mark::before,
.mini-mark::after {
  position: absolute;
  content: "";
}

.mini-mark::before {
  top: 8px;
  left: 8px;
  width: 16px;
  height: 16px;
  border: 2px solid var(--blue);
  transform: rotate(45deg);
}

.mini-mark::after {
  top: 14px;
  left: 14px;
  width: 6px;
  height: 6px;
  background: var(--blue);
}

.mini-mark.cyan::before {
  border-color: var(--cyan);
}

.mini-mark.cyan::after {
  background: var(--cyan);
}

.mini-mark.violet::before {
  border-color: var(--violet);
}

.mini-mark.violet::after {
  background: var(--violet);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  gap: 10px;
  color: white;
  background: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 5px;
  box-shadow: 0 10px 24px rgba(8, 120, 249, 0.18);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.button:hover {
  background: var(--blue-deep);
  border-color: var(--blue-deep);
  transform: translateY(-2px);
}

.button-small {
  min-height: 40px;
  padding: 0 16px;
  border-radius: 20px;
  font-size: 13px;
}

.button-dot {
  width: 7px;
  height: 7px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.18);
}

.nav-cta {
  flex: 0 0 auto;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.arrow-icon {
  display: inline-block;
  font-size: 18px;
  line-height: 1;
  transition: transform 180ms ease;
}

a:hover .arrow-icon {
  transform: translateX(4px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  gap: 9px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
}

.home-hero {
  position: relative;
  display: grid;
  min-height: 660px;
  height: calc(100vh - var(--header-height));
  max-height: 820px;
  overflow: hidden;
  background: #ecf3fa;
}

.hero-photo,
.page-hero-photo,
.demo-photo {
  position: absolute;
  inset: 0;
  background-position: center;
  background-size: cover;
}

.hero-photo {
  background-image: linear-gradient(90deg, rgba(247, 251, 255, 0.98) 0%, rgba(247, 251, 255, 0.88) 40%, rgba(237, 246, 252, 0.48) 72%, rgba(231, 241, 249, 0.22) 100%), url("../photo/hero-industrial.jpg");
  filter: saturate(0.75) contrast(0.92) brightness(1.12);
}

.hero-photo::after {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(8, 120, 249, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(8, 120, 249, 0.05) 1px, transparent 1px);
  background-size: 80px 80px;
  content: "";
  mask-image: linear-gradient(90deg, transparent, black);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(520px, 1.1fr);
  align-items: center;
  gap: 72px;
}

.hero-copy {
  max-width: 610px;
}

.hero-eyebrow,
.detail-copy > span,
.page-hero .container > span,
.scene-content > span,
.cta-band .container div > span,
.demo-title > span {
  display: inline-flex;
  align-items: center;
  margin-bottom: 22px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 1.8px;
}

.hero-eyebrow i {
  width: 28px;
  height: 2px;
  margin-right: 10px;
  background: var(--cyan);
}

.hero-copy h1 {
  margin-bottom: 12px;
  font-size: 64px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-lead {
  margin-bottom: 20px;
  color: var(--ink);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.35;
}

.hero-summary {
  max-width: 580px;
  margin-bottom: 30px;
  color: #52647a;
  font-size: 16px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.hero-trust {
  display: flex;
  gap: 24px;
  margin-top: 42px;
  color: #6e7e91;
  font-size: 12px;
}

.hero-trust span {
  position: relative;
  padding-left: 16px;
}

.hero-trust span::before {
  position: absolute;
  top: 7px;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--green);
  border-radius: 50%;
  content: "";
}

.hero-console {
  position: relative;
  width: min(100%, 560px);
  justify-self: end;
  padding: 22px;
  color: white;
  background: rgba(14, 31, 58, 0.9);
  border: 1px solid rgba(94, 180, 255, 0.32);
  box-shadow: 0 32px 80px rgba(25, 54, 85, 0.28);
  backdrop-filter: blur(18px);
}

.hero-console::before,
.hero-console::after {
  position: absolute;
  width: 32px;
  height: 32px;
  border-color: #56c5ff;
  content: "";
}

.hero-console::before {
  top: -5px;
  left: -5px;
  border-top: 2px solid;
  border-left: 2px solid;
}

.hero-console::after {
  right: -5px;
  bottom: -5px;
  border-right: 2px solid;
  border-bottom: 2px solid;
}

.console-head,
.chart-labels,
.console-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.console-head {
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 11px;
  letter-spacing: 1.3px;
}

.console-head span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #dbeeff;
}

.console-head i {
  width: 7px;
  height: 7px;
  background: #5dffb1;
  border-radius: 50%;
  box-shadow: 0 0 12px #5dffb1;
}

.console-head b {
  color: #7fd9ff;
  font-variant-numeric: tabular-nums;
}

.console-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.console-kpis > div {
  padding: 14px;
  background: rgba(255, 255, 255, 0.06);
  border-left: 2px solid var(--blue);
}

.console-kpis small,
.console-kpis em {
  display: block;
  color: #9db0c5;
  font-size: 10px;
  font-style: normal;
}

.console-kpis strong {
  display: block;
  margin: 4px 0;
  color: white;
  font-size: 24px;
  font-variant-numeric: tabular-nums;
}

.console-kpis em {
  color: #68e7aa;
}

.console-kpis em.cyan {
  color: #59d8ff;
}

.console-chart {
  padding: 16px;
  background: rgba(5, 18, 38, 0.42);
}

.chart-labels {
  color: #b5c4d4;
  font-size: 11px;
}

.chart-grid {
  position: relative;
  display: flex;
  align-items: end;
  height: 132px;
  margin-top: 12px;
  gap: 8px;
  background-image: linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 100% 33px;
}

.chart-grid i {
  width: 100%;
  height: var(--h);
  background: #268dff;
  border-top: 2px solid #79d8ff;
  opacity: 0.8;
}

.console-status {
  margin-top: 16px;
  color: #aab9ca;
  font-size: 10px;
}

.console-status span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.status-ok,
.status-warn {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.status-ok {
  background: #39ce91;
}

.status-warn {
  background: #f4ae45;
}

.hero-scan {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 62%;
  width: 1px;
  background: rgba(8, 120, 249, 0.34);
  box-shadow: 0 0 22px 3px rgba(8, 120, 249, 0.18);
  animation: scan 6s ease-in-out infinite;
}

@keyframes scan {
  0%, 100% { transform: translateX(-120px); opacity: 0; }
  20%, 80% { opacity: 1; }
  50% { transform: translateX(220px); }
}

.stats-band {
  position: relative;
  z-index: 3;
  background: white;
  border-bottom: 1px solid var(--line);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat {
  min-height: 132px;
  padding: 30px 38px;
  border-right: 1px solid var(--line);
}

.stat:first-child {
  border-left: 1px solid var(--line);
}

.stat strong,
.stat b {
  font-size: 30px;
  font-variant-numeric: tabular-nums;
}

.stat b {
  margin-left: 3px;
  color: var(--blue);
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.section {
  padding: 108px 0;
}

.section-heading {
  max-width: 720px;
  margin: 0 auto 54px;
  text-align: center;
}

.section-heading > span {
  display: block;
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 2px;
}

.section-heading h2 {
  position: relative;
  margin-bottom: 20px;
  padding-bottom: 20px;
  font-size: 34px;
  line-height: 1.35;
}

.section-heading h2::after {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 46px;
  height: 3px;
  background: var(--blue);
  content: "";
  transform: translateX(-50%);
}

.section-heading p {
  max-width: 650px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 15px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.product-card {
  position: relative;
  min-height: 330px;
  padding: 28px;
  background: white;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}

.product-card:hover {
  z-index: 2;
  background: var(--surface-blue);
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}

.product-index {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 50px;
  color: #a8b5c3;
  font-size: 12px;
}

.product-card > span,
.collection-card > div:last-child > span {
  color: var(--blue);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 1.4px;
}

.product-card h3 {
  margin: 8px 0 12px;
  font-size: 23px;
}

.product-card p {
  display: -webkit-box;
  overflow: hidden;
  color: var(--muted);
  font-size: 13px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.card-foot {
  position: absolute;
  right: 28px;
  bottom: 24px;
  left: 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: end;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.card-foot b {
  font-size: 19px;
}

.card-foot small {
  color: var(--muted);
  font-size: 10px;
}

.card-foot .arrow-icon {
  color: var(--blue);
}

.center-action {
  margin-top: 34px;
  text-align: center;
}

.scene-band {
  position: relative;
  min-height: 600px;
  overflow: hidden;
  background: #eaf0f4;
}

.scene-image {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(11, 28, 48, 0.92), rgba(15, 43, 68, 0.62) 48%, rgba(15, 43, 68, 0.2)), url("../photo/about-team.jpg");
  background-position: center;
  background-size: cover;
}

.scene-content {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: 600px;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.scene-content > span {
  color: #64d7ff;
}

.scene-content h2 {
  max-width: 670px;
  margin-bottom: 20px;
  color: white;
  font-size: 40px;
  line-height: 1.35;
}

.scene-content p {
  max-width: 600px;
  color: #d9e7f2;
}

.scene-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.scene-pills a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  color: white;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 4px;
  font-size: 13px;
  transition: background 180ms ease;
}

.scene-pills a:hover {
  background: var(--blue);
}

.topology-section {
  background: var(--surface);
}

.topology {
  position: relative;
  height: 570px;
  overflow: hidden;
  background: white;
  border: 1px solid var(--line);
  background-image: linear-gradient(rgba(8, 120, 249, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(8, 120, 249, 0.055) 1px, transparent 1px);
  background-size: 48px 48px;
}

.topology-core {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 3;
  display: grid;
  width: 200px;
  height: 200px;
  place-items: center;
  align-content: center;
  background: white;
  border: 1px solid #b7d8fb;
  border-radius: 50%;
  box-shadow: 0 20px 60px rgba(8, 120, 249, 0.17);
  transform: translate(-50%, -50%);
}

.topology-core .brand-mark {
  margin-bottom: 8px;
}

.topology-core strong,
.topology-core span {
  display: block;
}

.topology-core strong {
  font-size: 20px;
}

.topology-core span {
  color: var(--muted);
  font-size: 11px;
}

.topology-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px dashed #9bcaf7;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.ring-one {
  width: 330px;
  height: 330px;
}

.ring-two {
  width: 500px;
  height: 500px;
  opacity: 0.6;
}

.topology-node {
  position: absolute;
  z-index: 4;
  display: flex;
  align-items: center;
  min-width: 150px;
  height: 62px;
  padding: 0 18px;
  gap: 12px;
  background: white;
  border: 1px solid var(--line);
  box-shadow: 0 10px 28px rgba(47, 88, 128, 0.1);
}

.topology-node i {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: var(--blue);
  background: #edf6ff;
  font-size: 10px;
  font-style: normal;
  font-weight: 700;
}

.topology-node span {
  color: var(--ink);
  font-size: 13px;
  font-weight: 650;
}

.topology .node-1 { top: 56px; left: 110px; }
.topology .node-2 { top: 48px; right: 118px; }
.topology .node-3 { top: 252px; left: 64px; }
.topology .node-4 { top: 252px; right: 64px; }
.topology .node-5 { bottom: 52px; left: 160px; }
.topology .node-6 { right: 165px; bottom: 58px; }

.topology-line {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 1px;
  background: rgba(8, 120, 249, 0.2);
  transform: translate(-50%, -50%) rotate(30deg);
}

.line-two { transform: translate(-50%, -50%) rotate(-30deg); }
.line-three { transform: translate(-50%, -50%) rotate(90deg); }

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.advantage {
  min-height: 270px;
  padding: 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.advantage > span,
.value-grid article > span {
  display: block;
  margin-bottom: 62px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 750;
}

.advantage h3 {
  font-size: 19px;
}

.advantage p {
  color: var(--muted);
  font-size: 13px;
}

.cases-section {
  background: var(--surface);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.case-card {
  min-width: 0;
  background: white;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 200ms ease, transform 200ms ease;
}

.case-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-5px);
}

.case-image {
  position: relative;
  height: 220px;
  overflow: hidden;
  background-position: center;
  background-size: cover;
}

.case-image::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 24, 43, 0.02), rgba(6, 24, 43, 0.66));
  content: "";
}

.case-chip { background-image: url("../photo/hero-industrial.jpg"); }
.case-building { background-image: url("../photo/case-energy.jpg"); }
.case-office { background-image: url("../photo/solutions-city.jpg"); }

.case-image > span {
  position: absolute;
  bottom: 18px;
  left: 20px;
  z-index: 2;
  color: white;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
}

.case-image > i {
  position: absolute;
  right: 24px;
  bottom: 18px;
  z-index: 2;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
}

.case-image > i::before {
  position: absolute;
  top: 15px;
  left: 9px;
  width: 14px;
  height: 1px;
  background: white;
  content: "";
}

.case-copy {
  padding: 24px;
}

.case-copy > span {
  color: var(--blue);
  font-size: 11px;
}

.case-copy h3 {
  margin: 7px 0 12px;
  font-size: 21px;
}

.case-copy p {
  display: -webkit-box;
  min-height: 66px;
  overflow: hidden;
  color: var(--muted);
  font-size: 13px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.case-copy > b {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  color: var(--ink);
  font-size: 12px;
}

.cta-band {
  color: white;
  background: #096fe4;
  background-image: linear-gradient(90deg, rgba(9, 111, 228, 1), rgba(20, 168, 217, 0.9)), linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: auto, 44px 44px, 44px 44px;
}

.cta-band .container {
  display: flex;
  min-height: 260px;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cta-band .container div > span {
  margin-bottom: 10px;
  color: #bceaff;
}

.cta-band h2 {
  margin-bottom: 8px;
  color: white;
  font-size: 34px;
}

.cta-band p {
  margin-bottom: 0;
  color: #dcefff;
}

.button-light {
  color: var(--blue);
  background: white;
  border-color: white;
  box-shadow: none;
}

.button-light:hover {
  color: var(--blue-deep);
  background: #f0f7ff;
  border-color: #f0f7ff;
}

.page-hero {
  position: relative;
  display: flex;
  min-height: 390px;
  align-items: center;
  overflow: hidden;
  background: #eaf1f7;
}

.page-hero-photo {
  background-image: linear-gradient(90deg, rgba(242, 248, 253, 0.98), rgba(240, 247, 252, 0.77) 58%, rgba(234, 242, 248, 0.32)), url("../photo/hero-industrial.jpg");
  filter: saturate(0.55) brightness(1.1);
}

.page-hero-city .page-hero-photo {
  background-image: linear-gradient(90deg, rgba(240, 248, 254, 0.97), rgba(238, 247, 252, 0.65) 60%, rgba(231, 242, 249, 0.2)), url("../photo/case-energy.jpg");
}

.page-hero-about .page-hero-photo {
  background-image: linear-gradient(90deg, rgba(239, 247, 252, 0.97), rgba(238, 247, 252, 0.68) 56%, rgba(224, 239, 248, 0.18)), url("../photo/about-team.jpg");
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero .container > span {
  margin-bottom: 12px;
}

.page-hero h1 {
  margin-bottom: 15px;
  font-size: 48px;
  line-height: 1.2;
}

.page-hero p {
  max-width: 630px;
  margin-bottom: 0;
  color: #506176;
  font-size: 16px;
}

.collection-grid {
  display: grid;
  gap: 24px;
}

.collection-card {
  display: grid;
  grid-template-columns: 340px 1fr;
  min-height: 300px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 200ms ease, transform 200ms ease;
}

.collection-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.collection-card > div:last-child {
  padding: 36px 42px;
}

.collection-card h2 {
  margin: 8px 0 10px;
  font-size: 27px;
}

.collection-card p {
  max-width: 650px;
  color: var(--muted);
}

.collection-card ul {
  display: flex;
  flex-wrap: wrap;
  margin: 22px 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.collection-card li {
  padding: 5px 11px;
  color: #4f6177;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 11px;
}

.collection-visual {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #eef6ff;
  background-image: linear-gradient(rgba(8, 120, 249, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(8, 120, 249, 0.06) 1px, transparent 1px);
  background-size: 36px 36px;
}

.collection-visual > span {
  position: absolute;
  top: 24px;
  left: 24px;
  color: #88a4bf;
  font-size: 12px;
}

.collection-visual i {
  width: 128px;
  height: 128px;
  border: 1px solid #93c7f6;
  transform: rotate(45deg);
  box-shadow: 0 24px 40px rgba(8, 120, 249, 0.14);
}

.collection-visual i::before,
.collection-visual i::after {
  position: absolute;
  content: "";
}

.collection-visual i::before {
  inset: 20px;
  border: 2px solid var(--blue);
}

.collection-visual i::after {
  inset: 44px;
  background: var(--blue);
}

.collection-visual > b {
  position: absolute;
  width: 210px;
  height: 70px;
  border: 1px solid #a7cdec;
  border-radius: 50%;
  transform: rotate(-12deg);
}

.collection-visual.cyan i::before { border-color: var(--cyan); }
.collection-visual.cyan i::after { background: var(--cyan); }
.collection-visual.violet i::before { border-color: var(--violet); }
.collection-visual.violet i::after { background: var(--violet); }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue);
  font-size: 13px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}

.filter-bar button {
  min-height: 44px;
  padding: 0 17px;
  color: #55667b;
  background: white;
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  transition: color 180ms ease, background 180ms ease, border-color 180ms ease;
}

.filter-bar button:hover,
.filter-bar button.active {
  color: white;
  background: var(--blue);
  border-color: var(--blue);
}

.detail-hero {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  background: var(--surface-blue);
  background-image: linear-gradient(rgba(8, 120, 249, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(8, 120, 249, 0.06) 1px, transparent 1px);
  background-size: 54px 54px;
}

.detail-hero-grid {
  display: grid;
  min-height: 500px;
  grid-template-columns: 1fr 0.8fr;
  align-items: center;
  gap: 90px;
}

.breadcrumb {
  display: block;
  margin-bottom: 26px;
  color: var(--muted);
  font-size: 12px;
}

.detail-copy > span {
  margin-bottom: 8px;
}

.detail-copy h1 {
  margin-bottom: 15px;
  font-size: 48px;
}

.detail-copy p {
  max-width: 620px;
  margin-bottom: 28px;
  color: #56677a;
  font-size: 16px;
}

.detail-orbit {
  position: relative;
  width: 330px;
  height: 330px;
  justify-self: center;
  border: 1px solid rgba(8, 120, 249, 0.28);
  border-radius: 50%;
}

.detail-orbit::before,
.detail-orbit::after {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px dashed rgba(8, 120, 249, 0.25);
  border-radius: 50%;
  content: "";
  transform: translate(-50%, -50%);
}

.detail-orbit::before { width: 245px; height: 245px; }
.detail-orbit::after { width: 160px; height: 160px; }

.detail-orbit > i,
.detail-orbit > b {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 78px;
  height: 78px;
  border: 2px solid var(--blue);
  content: "";
}

.detail-orbit > i { transform: translate(-50%, -50%) rotate(45deg); }
.detail-orbit > b { transform: translate(-50%, -50%) rotate(45deg) scale(0.5); background: var(--blue); }

.detail-orbit > span {
  position: absolute;
  right: -20px;
  bottom: 34px;
  display: grid;
  min-width: 130px;
  padding: 14px 16px;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  font-size: 25px;
  font-weight: 750;
}

.detail-orbit > span small {
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
}

.detail-orbit.cyan > i { border-color: var(--cyan); }
.detail-orbit.cyan > b { background: var(--cyan); }
.detail-orbit.violet > i { border-color: var(--violet); }
.detail-orbit.violet > b { background: var(--violet); }

.dashboard-mock {
  display: grid;
  grid-template-columns: 150px 1fr;
  min-height: 560px;
  overflow: hidden;
  background: white;
  border: 1px solid #cedce9;
  box-shadow: 0 26px 70px rgba(55, 90, 127, 0.14);
}

.dashboard-mock > aside {
  padding: 24px 14px;
  color: #7b8b9d;
  background: #14233d;
}

.mock-logo {
  display: grid;
  width: 38px;
  height: 38px;
  margin: 0 10px 34px;
  place-items: center;
  color: white;
  background: var(--blue);
  font-size: 12px;
  font-weight: 800;
}

.dashboard-mock aside i {
  display: flex;
  min-height: 40px;
  align-items: center;
  padding: 0 12px;
  margin-bottom: 5px;
  border-left: 2px solid transparent;
  font-size: 11px;
  font-style: normal;
}

.dashboard-mock aside i.active {
  color: white;
  background: rgba(255, 255, 255, 0.08);
  border-left-color: #4cbcff;
}

.mock-main {
  min-width: 0;
  padding: 20px;
  background: #f4f7fa;
}

.mock-main > header {
  display: flex;
  height: 50px;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  color: var(--ink);
  background: white;
  border: 1px solid #e2eaf1;
  font-size: 12px;
}

.mock-main > header b {
  color: #8391a2;
  font-size: 10px;
  font-weight: 500;
}

.mock-kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 12px 0;
}

.mock-kpis > div {
  padding: 18px;
  background: white;
  border: 1px solid #e2eaf1;
}

.mock-kpis small,
.mock-kpis strong {
  display: block;
}

.mock-kpis small {
  color: #7d8b9b;
  font-size: 10px;
}

.mock-kpis strong {
  margin-top: 7px;
  font-size: 22px;
}

.mock-panels {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 12px;
}

.mock-panels section,
.mock-table {
  padding: 18px;
  background: white;
  border: 1px solid #e2eaf1;
}

.mock-panels section > span,
.mock-table > span {
  color: #46566b;
  font-size: 11px;
  font-weight: 700;
}

.line-chart {
  position: relative;
  height: 160px;
  margin-top: 16px;
  overflow: hidden;
  background-image: linear-gradient(#e9eff5 1px, transparent 1px);
  background-size: 100% 40px;
}

.line-chart::before,
.line-chart::after {
  position: absolute;
  right: -2%;
  left: -2%;
  height: 62px;
  content: "";
  border-top: 3px solid var(--blue);
  border-radius: 50%;
  transform: rotate(-4deg);
}

.line-chart::before { top: 72px; }
.line-chart::after { top: 95px; border-color: var(--cyan); transform: rotate(3deg); }

.donut {
  display: grid;
  width: 138px;
  height: 138px;
  margin: 24px auto 0;
  place-items: center;
  background: conic-gradient(var(--blue) 0 76%, #e8eef4 76% 100%);
  border-radius: 50%;
}

.donut::before {
  position: absolute;
  width: 92px;
  height: 92px;
  background: white;
  border-radius: 50%;
  content: "";
}

.donut i {
  position: relative;
  z-index: 2;
  color: var(--ink);
  font-size: 18px;
  font-style: normal;
  font-weight: 750;
}

.mock-table {
  margin-top: 12px;
}

.mock-table > div {
  display: grid;
  grid-template-columns: 12px 1fr auto;
  align-items: center;
  min-height: 42px;
  gap: 10px;
  border-bottom: 1px solid #edf1f5;
}

.mock-table b,
.mock-table small {
  font-size: 10px;
}

.mock-table b {
  font-weight: 600;
}

.mock-table small {
  color: #6e7d8e;
}

.detail-capability-section {
  background: var(--surface);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.capability {
  min-height: 300px;
  padding: 26px;
  background: white;
  border: 1px solid var(--line);
}

.capability > span {
  color: #a1afbf;
  font-size: 11px;
}

.capability .mini-mark {
  display: block;
  margin: 48px 0 24px;
}

.capability h3 {
  font-size: 18px;
}

.capability p {
  color: var(--muted);
  font-size: 13px;
}

.architecture-section .section-heading {
  margin-left: 0;
  text-align: left;
}

.architecture-section .section-heading h2::after {
  left: 0;
  transform: none;
}

.architecture-grid {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  align-items: center;
  gap: 76px;
}

.check-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  padding: 0;
  gap: 12px;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 22px;
  color: #506176;
  font-size: 13px;
}

.check-list li::before {
  position: absolute;
  top: 8px;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--green);
  content: "";
}

.architecture-visual {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.arch-layer {
  display: grid;
  grid-template-columns: 1fr repeat(3, 90px);
  min-height: 76px;
  align-items: center;
  padding: 0 18px;
  margin-bottom: 12px;
  gap: 10px;
  background: white;
  border: 1px solid var(--line);
}

.arch-layer.primary {
  color: white;
  background: var(--blue);
  border-color: var(--blue);
}

.arch-layer span {
  color: var(--ink);
  font-size: 14px;
  font-weight: 750;
}

.arch-layer.primary span {
  color: white;
}

.arch-layer i,
.arch-source i {
  display: grid;
  min-height: 36px;
  place-items: center;
  color: #5f7084;
  background: var(--surface);
  font-size: 10px;
  font-style: normal;
}

.arch-layer.primary i {
  color: white;
  background: rgba(255, 255, 255, 0.14);
}

.arch-source {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.arch-source i {
  min-height: 48px;
  background: #e7eff6;
}

.article-section {
  padding: 74px 0 110px;
  background: var(--surface);
}

.article-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 820px);
  justify-content: center;
  gap: 42px;
}

.article-toc {
  position: sticky;
  top: 110px;
  display: flex;
  height: fit-content;
  flex-direction: column;
  padding: 22px;
  background: white;
  border: 1px solid var(--line);
}

.article-toc > span {
  margin-bottom: 12px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 750;
}

.article-toc > a {
  display: flex;
  min-height: 38px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.article-toc > a:hover {
  color: var(--blue);
}

.article-toc > div {
  display: grid;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.article-toc strong {
  color: var(--blue);
  font-size: 27px;
}

.article-toc small {
  color: var(--muted);
  font-size: 10px;
}

.case-article {
  padding: 48px 58px;
  background: white;
  border: 1px solid var(--line);
}

.article-meta {
  display: flex;
  padding-bottom: 20px;
  margin-bottom: 45px;
  gap: 18px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 11px;
}

.case-article section {
  scroll-margin-top: 110px;
}

.article-number {
  color: var(--blue);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 1.5px;
}

.case-article h2 {
  margin: 10px 0 20px;
  font-size: 28px;
}

.case-article p {
  color: #526276;
  line-height: 1.9;
}

.case-article blockquote {
  margin: 30px 0 48px;
  padding: 22px 26px;
  color: var(--ink);
  background: var(--surface-blue);
  border-left: 3px solid var(--blue);
  font-size: 18px;
  font-weight: 600;
}

.article-image {
  position: relative;
  display: flex;
  min-height: 340px;
  flex-direction: column;
  justify-content: flex-end;
  padding: 34px;
  margin: 44px 0 54px;
  color: white;
  background-image: linear-gradient(180deg, rgba(10, 31, 54, 0.05), rgba(10, 31, 54, 0.82)), url("../photo/case-energy.jpg");
  background-position: center;
  background-size: cover;
}

.article-image strong {
  color: white;
  font-size: 28px;
}

.article-image span {
  font-size: 11px;
  letter-spacing: 1.5px;
}

.case-article .architecture-visual {
  margin: 35px 0 54px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 30px 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.result-grid > div {
  display: grid;
  min-height: 120px;
  align-content: center;
  padding: 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.result-grid strong {
  color: var(--blue);
  font-size: 26px;
}

.result-grid span {
  color: var(--muted);
  font-size: 10px;
}

.docs-section {
  padding: 70px 0 110px;
  background: var(--surface);
}

.docs-layout {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 24px;
}

.docs-nav {
  display: flex;
  height: fit-content;
  flex-direction: column;
  padding: 20px;
  background: white;
  border: 1px solid var(--line);
}

.docs-nav > span {
  padding: 8px 12px 16px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 750;
}

.docs-nav button {
  min-height: 44px;
  padding: 0 12px;
  text-align: left;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-left: 2px solid transparent;
  cursor: pointer;
}

.docs-nav button:hover,
.docs-nav button.active {
  color: var(--blue);
  background: var(--surface-blue);
  border-left-color: var(--blue);
}

.docs-content {
  min-width: 0;
  padding: 50px;
  background: white;
  border: 1px solid var(--line);
}

.docs-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.docs-head span {
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
}

.docs-head h2 {
  margin: 8px 0;
  font-size: 34px;
}

.docs-head p {
  margin-bottom: 0;
  color: var(--muted);
}

.docs-head label {
  position: relative;
  min-width: 260px;
}

.docs-head input {
  width: 100%;
  min-height: 44px;
  padding: 0 42px 0 14px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.docs-head label i {
  position: absolute;
  top: 7px;
  right: 14px;
  color: var(--muted);
  font-size: 20px;
  font-style: normal;
}

.docs-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-top: 40px;
}

.docs-steps article {
  min-height: 230px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.docs-steps article > span {
  color: var(--blue);
  font-size: 11px;
}

.docs-steps h2 {
  margin: 28px 0 8px;
  font-size: 19px;
}

.docs-steps p,
.docs-steps a {
  font-size: 12px;
}

.docs-steps p {
  color: var(--muted);
}

.docs-steps a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue);
  font-weight: 700;
}

.api-block {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  align-items: stretch;
  margin-top: 30px;
  color: white;
  background: #101d33;
}

.api-block > div {
  padding: 32px;
}

.api-block > div span {
  color: #5ac5ff;
  font-size: 10px;
  letter-spacing: 1.5px;
}

.api-block h2 {
  margin-top: 10px;
  color: white;
  font-size: 22px;
}

.api-block pre {
  margin: 0;
  padding: 28px;
  overflow: auto;
  color: #bce6ff;
  background: #081426;
  font-size: 11px;
  line-height: 1.75;
}

.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 70px;
}

.about-intro .section-heading {
  margin-left: 0;
  text-align: left;
}

.about-intro .section-heading h2::after {
  left: 0;
  transform: none;
}

.about-photo {
  min-height: 470px;
  background: url("../photo/about-team.jpg") center / cover;
}

.about-intro > div:last-child > p {
  color: var(--muted);
}

.about-signature {
  display: inline-grid;
  margin-top: 24px;
}

.about-signature strong {
  color: var(--blue);
  font-size: 40px;
}

.about-signature span {
  color: var(--muted);
  font-size: 11px;
}

.vision-section {
  position: relative;
  min-height: 650px;
  padding: 110px 0 0;
  overflow: hidden;
  background: #edf7ff;
}

.vision-map {
  position: relative;
  width: 520px;
  height: 520px;
  margin: -10px auto -250px;
  border: 1px solid #c1e0fb;
  border-radius: 50%;
  box-shadow: inset 0 0 90px rgba(8, 120, 249, 0.12), 0 0 80px rgba(8, 120, 249, 0.08);
}

.vision-map::before,
.vision-map::after,
.vision-map i,
.vision-map b {
  position: absolute;
  content: "";
  border: 1px solid #b6dcfb;
  border-radius: 50%;
}

.vision-map::before { inset: 60px; }
.vision-map::after { inset: 130px; }
.vision-map i { top: 0; bottom: 0; left: 50%; width: 180px; transform: translateX(-50%); }
.vision-map b { top: 50%; right: 0; left: 0; height: 180px; transform: translateY(-50%); }

.vision-map span {
  position: absolute;
  top: 42%;
  left: 58%;
  z-index: 2;
  padding: 8px 12px;
  color: white;
  background: var(--blue);
  font-size: 10px;
  letter-spacing: 1px;
}

.vision-map span::before {
  position: absolute;
  top: -12px;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--blue);
  border-radius: 50%;
  box-shadow: 0 0 0 7px rgba(8, 120, 249, 0.18);
  content: "";
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.value-grid article {
  min-height: 300px;
  padding: 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.value-grid h2 {
  font-size: 20px;
}

.value-grid p {
  color: var(--muted);
  font-size: 13px;
}

.demo-scene {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  max-height: 860px;
  overflow: hidden;
  color: white;
  background: #d9e4ec;
}

.demo-photo {
  background-image: url("../photo/case-energy.jpg");
  filter: saturate(0.45) brightness(1.2) contrast(0.85);
}

.demo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(228, 238, 246, 0.96), rgba(223, 235, 244, 0.74) 42%, rgba(207, 222, 233, 0.42)), linear-gradient(180deg, rgba(240, 247, 252, 0.3), rgba(204, 220, 232, 0.54));
}

.demo-overlay::after {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(8, 120, 249, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(8, 120, 249, 0.08) 1px, transparent 1px);
  background-size: 64px 64px;
  content: "";
}

.demo-filters {
  position: absolute;
  top: 50%;
  left: max(24px, calc((100% - 1280px) / 2));
  z-index: 4;
  display: flex;
  width: 150px;
  flex-direction: column;
  padding: 14px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  transform: translateY(-50%);
}

.demo-filters > span {
  padding: 8px 12px 12px;
  color: #738398;
  font-size: 10px;
  letter-spacing: 1.2px;
}

.demo-filters button {
  display: flex;
  min-height: 48px;
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  color: #637489;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.demo-filters button i {
  width: 8px;
  height: 8px;
  background: #aebdca;
}

.demo-filters button.active {
  color: var(--blue);
  background: white;
  box-shadow: 0 8px 20px rgba(48, 89, 125, 0.1);
}

.demo-filters button.active i {
  background: var(--blue);
}

.demo-title {
  position: absolute;
  top: 80px;
  left: max(220px, calc((100% - 900px) / 2));
  z-index: 3;
  max-width: 540px;
}

.demo-title > span {
  margin-bottom: 8px;
}

.demo-title h1 {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 42px;
}

.demo-title p {
  color: #55677b;
}

.demo-map {
  position: absolute;
  top: 50%;
  left: 58%;
  z-index: 3;
  width: min(760px, 60vw);
  height: min(560px, 66vh);
  border: 1px solid rgba(8, 120, 249, 0.25);
  transform: translate(-50%, -42%) skewY(-4deg);
}

.demo-map::before,
.demo-map::after {
  position: absolute;
  content: "";
  background: rgba(8, 120, 249, 0.17);
}

.demo-map::before { top: 50%; right: 0; left: 0; height: 1px; }
.demo-map::after { top: 0; bottom: 0; left: 50%; width: 1px; }

.demo-node {
  position: absolute;
  z-index: 4;
  display: grid;
  min-width: 112px;
  min-height: 54px;
  place-items: center;
  padding: 9px 14px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.93);
  border: 1px solid rgba(8, 120, 249, 0.26);
  box-shadow: 0 12px 26px rgba(40, 78, 113, 0.14);
  font-size: 12px;
  font-weight: 700;
  transform: skewY(4deg);
  transition: opacity 180ms ease, border-color 180ms ease;
}

.demo-node:hover {
  border-color: var(--blue);
}

.demo-node i {
  position: absolute;
  bottom: -34px;
  width: 2px;
  height: 34px;
  background: var(--blue);
}

.demo-node i::after {
  position: absolute;
  bottom: 0;
  left: -4px;
  width: 10px;
  height: 10px;
  background: var(--blue);
  border-radius: 50%;
  box-shadow: 0 0 0 8px rgba(8, 120, 249, 0.12);
  content: "";
}

.demo-node.muted {
  opacity: 0.18;
}

.demo-node.node-1 { top: 18%; left: 40%; }
.demo-node.node-2 { top: 5%; right: 8%; }
.demo-node.node-3 { top: 38%; left: 8%; }
.demo-node.node-4 { top: 42%; right: 4%; }
.demo-node.node-5 { bottom: 8%; left: 42%; }
.demo-node.node-6 { top: 8%; left: 6%; }
.demo-node.node-7 { bottom: 6%; left: 5%; }
.demo-node.node-8 { right: 8%; bottom: 10%; }

.demo-radar {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 330px;
  height: 330px;
  border: 1px dashed rgba(8, 120, 249, 0.26);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.demo-radar::before,
.demo-radar::after {
  position: absolute;
  border: 1px dashed rgba(8, 120, 249, 0.26);
  border-radius: 50%;
  content: "";
}

.demo-radar::before { inset: 65px; }
.demo-radar::after { inset: 125px; background: rgba(8, 120, 249, 0.08); }

.demo-status {
  position: absolute;
  right: max(24px, calc((100% - 1280px) / 2));
  bottom: 36px;
  z-index: 5;
  display: grid;
  min-width: 180px;
  padding: 18px 20px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid white;
  box-shadow: var(--shadow);
}

.demo-status span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--green);
  font-size: 10px;
}

.demo-status span i {
  width: 7px;
  height: 7px;
  background: var(--green);
  border-radius: 50%;
}

.demo-status b {
  font-size: 30px;
}

.demo-status small {
  color: var(--muted);
  font-size: 8px;
  letter-spacing: 1px;
}

.demo-module-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.demo-module-grid a {
  position: relative;
  min-height: 260px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background 180ms ease;
}

.demo-module-grid a:hover {
  background: var(--surface-blue);
}

.demo-module-grid > a > span {
  color: var(--blue);
  font-size: 11px;
}

.demo-module-grid h2 {
  margin: 44px 0 12px;
  font-size: 20px;
}

.demo-module-grid p {
  color: var(--muted);
  font-size: 13px;
}

.demo-module-grid .arrow-icon {
  position: absolute;
  right: 28px;
  bottom: 24px;
  color: var(--blue);
}

.site-footer {
  color: #8f9cb1;
  background: var(--navy);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 44px;
  padding-top: 68px;
  padding-bottom: 58px;
}

.brand-inverse strong {
  color: white;
}

.brand-inverse .brand-mark b {
  background: var(--navy);
}

.brand-inverse small {
  color: #8797ae;
  font-size: 10px;
  letter-spacing: 0;
}

.footer-brand > p {
  max-width: 310px;
  margin-top: 24px;
  color: #8897ab;
  font-size: 13px;
}

.footer-contact {
  display: grid;
  gap: 4px;
  margin-top: 22px;
}

.footer-contact a:first-child {
  color: white;
  font-size: 22px;
  font-weight: 700;
}

.footer-contact a:last-child {
  font-size: 12px;
}

.footer-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.footer-column h2 {
  margin-bottom: 12px;
  color: white;
  font-size: 14px;
}

.footer-column a,
.footer-column span {
  color: #8795aa;
  font-size: 11px;
}

.footer-column a:hover {
  color: white;
}

.footer-bottom {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: space-between;
  color: #627188;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 10px;
}

.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: var(--z-floating);
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  color: white;
  background: var(--blue);
  border: 0;
  border-radius: 50%;
  box-shadow: 0 12px 30px rgba(8, 120, 249, 0.3);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
  cursor: pointer;
}

.back-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.not-found {
  display: grid;
  min-height: 70vh;
  place-items: center;
  text-align: center;
  background: var(--surface);
}

.not-found > div > span {
  color: var(--blue);
  font-size: 72px;
  font-weight: 800;
}

.not-found h1 {
  font-size: 32px;
}

.not-found p {
  color: var(--muted);
}

.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 220ms ease, transform 220ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .nav-link { padding: 0 10px; }
  .nav-cta { display: none; }
  .hero-grid { grid-template-columns: 0.9fr 1.1fr; gap: 36px; }
  .hero-copy h1 { font-size: 54px; }
  .hero-lead { font-size: 26px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
  .collection-card { grid-template-columns: 300px 1fr; }
  .footer-top { grid-template-columns: 1.6fr repeat(4, 1fr); gap: 24px; }
}

@media (max-width: 900px) {
  :root { --header-height: 68px; }
  .container, .nav-shell { width: min(100% - 36px, 720px); }
  .nav-shell { justify-content: space-between; }
  .menu-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 100%;
    right: 0;
    bottom: auto;
    left: 0;
    display: block;
    width: 100vw;
    height: calc(100vh - var(--header-height));
    padding: 24px 18px 80px;
    overflow-y: auto;
    background: white;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 180ms ease, transform 180ms ease;
  }
  .menu-open .main-nav { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
  .menu-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
  .menu-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-item { display: block; height: auto; }
  .nav-link { justify-content: flex-start; width: 100%; min-height: 54px; padding: 0 14px; border-bottom: 1px solid var(--line); }
  .nav-link::after { display: none; }
  .mega-menu, .nav-item:nth-of-type(4) .mega-menu {
    position: static;
    width: 100%;
    padding: 12px 0 18px;
    border: 0;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }
  .mega-links { grid-template-columns: 1fr 1fr; }
  .mega-links a { min-height: 58px; padding: 9px 12px; }
  .mega-links small, .mega-label { display: none; }
  .brand { min-width: 150px; }
  .home-hero { min-height: 780px; height: calc(100vh - var(--header-height)); max-height: 860px; }
  .hero-grid { grid-template-columns: 1fr; grid-template-rows: auto 300px; align-content: center; gap: 28px; padding-top: 30px; padding-bottom: 30px; }
  .hero-copy { max-width: 650px; }
  .hero-copy h1 { font-size: 46px; }
  .hero-lead { font-size: 24px; }
  .hero-trust { margin-top: 24px; }
  .hero-console { width: 100%; max-width: 650px; justify-self: start; padding: 16px; }
  .console-chart { display: none; }
  .console-kpis { margin-bottom: 12px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { min-height: 112px; padding: 24px; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:first-child { border-left: 0; }
  .section { padding: 86px 0; }
  .section-heading h2 { font-size: 30px; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .topology { height: 610px; }
  .ring-two { width: 470px; height: 470px; }
  .topology .node-1 { left: 30px; }
  .topology .node-2 { right: 30px; }
  .topology .node-3 { left: 12px; }
  .topology .node-4 { right: 12px; }
  .topology .node-5 { left: 55px; }
  .topology .node-6 { right: 55px; }
  .page-hero { min-height: 340px; }
  .collection-card { grid-template-columns: 250px 1fr; }
  .collection-card > div:last-child { padding: 30px; }
  .detail-hero-grid { grid-template-columns: 1fr 0.6fr; gap: 28px; }
  .detail-orbit { width: 250px; height: 250px; }
  .dashboard-mock { grid-template-columns: 110px 1fr; min-height: 500px; }
  .mock-kpis { grid-template-columns: repeat(2, 1fr); }
  .mock-panels { grid-template-columns: 1fr; }
  .mock-panels section:last-child { display: none; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .architecture-grid { grid-template-columns: 1fr; gap: 20px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-toc { position: static; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .article-toc > span, .article-toc > div { display: none; }
  .article-toc > a { justify-content: center; background: var(--surface); }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-nav { display: grid; grid-template-columns: repeat(3, 1fr); }
  .docs-nav > span { grid-column: 1 / -1; }
  .about-intro { grid-template-columns: 1fr; gap: 44px; }
  .about-photo { min-height: 390px; }
  .demo-title { left: 190px; }
  .demo-map { left: 58%; width: 66vw; }
  .demo-module-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .container, .nav-shell { width: calc(100% - 28px); }
  .brand { min-width: 0; }
  .brand strong { font-size: 17px; }
  .brand small { display: none; }
  .brand-mark { width: 34px; height: 34px; transform: scale(0.9); }
  .mega-links { grid-template-columns: 1fr; }
  .mega-links a { grid-template-columns: 30px 1fr; }
  .mini-mark { width: 30px; height: 30px; }
  .home-hero { min-height: 720px; height: calc(100vh - var(--header-height)); max-height: 780px; }
  .hero-photo { background-image: linear-gradient(180deg, rgba(247, 251, 255, 0.98), rgba(239, 247, 252, 0.88)), url("../photo/hero-industrial.jpg"); }
  .hero-grid { grid-template-rows: auto 240px; gap: 20px; }
  .hero-copy h1 { font-size: 40px; }
  .hero-lead { font-size: 21px; }
  .hero-summary { margin-bottom: 20px; font-size: 14px; line-height: 1.7; }
  .hero-actions { gap: 12px; }
  .hero-actions .button, .hero-actions .text-link { min-height: 44px; }
  .hero-trust { display: none; }
  .hero-console { padding: 13px; }
  .console-head { padding-bottom: 10px; }
  .console-kpis { gap: 5px; margin: 10px 0; }
  .console-kpis > div { padding: 10px; }
  .console-kpis strong { font-size: 18px; }
  .console-status { gap: 5px; }
  .console-status span:last-child { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { min-height: 100px; padding: 20px 14px; }
  .stat strong, .stat b { font-size: 25px; }
  .section { padding: 72px 0; }
  .section-heading { margin-bottom: 38px; }
  .section-heading h2 { font-size: 26px; }
  .section-heading p { font-size: 14px; }
  .product-grid, .advantage-grid, .value-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 300px; }
  .scene-band, .scene-content { min-height: 560px; }
  .scene-content h2 { font-size: 30px; }
  .topology { height: 660px; }
  .topology-core { width: 150px; height: 150px; }
  .ring-one { width: 260px; height: 260px; }
  .ring-two { width: 410px; height: 410px; }
  .topology-node { min-width: 118px; height: 52px; padding: 0 10px; gap: 7px; }
  .topology-node i { width: 25px; height: 25px; }
  .topology-node span { font-size: 11px; }
  .topology .node-1 { top: 36px; left: 10px; }
  .topology .node-2 { top: 40px; right: 10px; }
  .topology .node-3 { top: 284px; left: 5px; }
  .topology .node-4 { top: 284px; right: 5px; }
  .topology .node-5 { bottom: 40px; left: 15px; }
  .topology .node-6 { right: 15px; bottom: 40px; }
  .case-grid { grid-template-columns: 1fr; }
  .case-image { height: 210px; }
  .cta-band .container { min-height: 310px; flex-direction: column; align-items: flex-start; justify-content: center; gap: 24px; }
  .cta-band h2 { font-size: 28px; }
  .page-hero { min-height: 320px; }
  .page-hero h1 { font-size: 37px; }
  .collection-card { grid-template-columns: 1fr; }
  .collection-visual { min-height: 230px; }
  .collection-card > div:last-child { padding: 26px; }
  .filter-bar { flex-wrap: nowrap; margin-right: -14px; padding-right: 14px; overflow-x: auto; }
  .filter-bar button { flex: 0 0 auto; }
  .detail-hero-grid { min-height: 650px; grid-template-columns: 1fr; grid-template-rows: auto 220px; padding-top: 52px; padding-bottom: 46px; }
  .detail-copy h1 { font-size: 38px; }
  .detail-orbit { width: 205px; height: 205px; }
  .detail-orbit::before { width: 155px; height: 155px; }
  .detail-orbit::after { width: 110px; height: 110px; }
  .detail-orbit > span { right: -54px; bottom: 18px; font-size: 20px; }
  .dashboard-mock { grid-template-columns: 1fr; min-height: 470px; }
  .dashboard-mock > aside { display: none; }
  .mock-main { padding: 10px; }
  .mock-main > header { padding: 0 10px; }
  .mock-kpis { gap: 6px; }
  .mock-kpis > div { padding: 12px; }
  .mock-kpis strong { font-size: 17px; }
  .mock-table { display: none; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability { min-height: 250px; }
  .capability .mini-mark { margin: 35px 0 18px; }
  .check-list { grid-template-columns: 1fr; }
  .architecture-visual { padding: 12px; }
  .arch-layer { grid-template-columns: 1fr repeat(3, 52px); padding: 0 8px; gap: 5px; }
  .arch-layer span { font-size: 11px; }
  .arch-layer i { font-size: 8px; }
  .article-section { padding-top: 26px; }
  .article-toc { grid-template-columns: repeat(3, 1fr); padding: 10px; }
  .case-article { padding: 30px 22px; }
  .article-meta { flex-wrap: wrap; margin-bottom: 34px; }
  .case-article h2 { font-size: 24px; }
  .article-image { min-height: 260px; margin: 34px 0; padding: 24px; }
  .article-image strong { font-size: 23px; }
  .result-grid { grid-template-columns: 1fr; }
  .docs-section { padding: 30px 0 72px; }
  .docs-nav { display: flex; flex-direction: row; padding: 10px; overflow-x: auto; }
  .docs-nav > span { display: none; }
  .docs-nav button { flex: 0 0 auto; }
  .docs-content { padding: 28px 20px; }
  .docs-head { flex-direction: column; }
  .docs-head label { width: 100%; min-width: 0; }
  .docs-steps { grid-template-columns: 1fr; }
  .api-block { grid-template-columns: 1fr; }
  .api-block pre { white-space: pre-wrap; word-break: break-word; }
  .about-photo { min-height: 300px; }
  .vision-section { min-height: 570px; }
  .vision-map { width: 390px; height: 390px; margin-top: 10px; }
  .demo-scene { min-height: 720px; max-height: 780px; }
  .demo-filters { top: auto; right: 14px; bottom: 16px; left: 14px; width: auto; flex-direction: row; padding: 8px; transform: none; overflow-x: auto; }
  .demo-filters > span { display: none; }
  .demo-filters button { flex: 0 0 auto; min-height: 44px; }
  .demo-title { top: 42px; left: 24px; max-width: calc(100% - 48px); }
  .demo-title h1 { font-size: 34px; }
  .demo-map { top: 53%; left: 50%; width: calc(100% - 34px); height: 390px; transform: translate(-50%, -50%) skewY(-4deg); }
  .demo-node { min-width: 88px; min-height: 46px; padding: 7px 8px; font-size: 10px; }
  .demo-node.node-1 { top: 18%; left: 38%; }
  .demo-node.node-2 { right: 2%; }
  .demo-node.node-4 { right: 1%; }
  .demo-node.node-8 { right: 2%; }
  .demo-radar { width: 240px; height: 240px; }
  .demo-status { right: auto; bottom: 88px; left: 18px; min-width: 150px; padding: 12px 14px; }
  .demo-status b { font-size: 24px; }
  .demo-module-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: repeat(2, 1fr); gap: 34px 20px; padding-top: 50px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-column:last-child { grid-column: 1 / -1; }
  .footer-bottom { align-items: flex-start; flex-direction: column; justify-content: center; gap: 3px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== 新增视觉特效 ===== */

/* 波纹动画 */
@keyframes ripple-animation {
  to {
    transform: scale(2);
    opacity: 0;
  }
}

/* 3D卡片过渡 */
.product-card,
.case-card,
.collection-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  transform-style: preserve-3d;
}

/* 粒子画布 */
.particle-canvas {
  opacity: 0.6;
}

/* 页面过渡动画 */
#site-shell {
  will-change: opacity, transform;
}

/* 滚动进度条 */
.scroll-progress {
  box-shadow: 0 0 10px rgba(8, 120, 249, 0.5);
}

/* 鼠标光晕 */
.mouse-glow {
  mix-blend-mode: screen;
  will-change: transform;
}

/* 脉冲效果 */
.status-ok::before,
.status-warn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  transform: translateY(-50%);
  animation: pulse 2s ease-in-out infinite;
}

.status-ok::before {
  background: var(--green);
}

.status-warn::before {
  background: #ff9500;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 currentColor;
    opacity: 1;
  }
  50% {
    box-shadow: 0 0 0 4px currentColor;
    opacity: 0.6;
  }
}

/* Hero信任标签脉冲 */
.hero-trust span {
  position: relative;
  animation: trust-pulse 3s ease-in-out infinite;
}

.hero-trust span:nth-child(1) {
  animation-delay: 0s;
}

.hero-trust span:nth-child(2) {
  animation-delay: 1s;
}

.hero-trust span:nth-child(3) {
  animation-delay: 2s;
}

@keyframes trust-pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* 增强扫描线动画 */
.hero-scan {
  animation: scan 6s ease-in-out infinite;
  filter: blur(2px);
  opacity: 0.4;
}

@keyframes scan {
  0%, 100% {
    transform: translateX(-120px);
    opacity: 0;
  }
  10% {
    opacity: 0.4;
  }
  50% {
    transform: translateX(220px);
  }
  90% {
    opacity: 0.4;
  }
}

/* 数据流SVG路径 */
.topology svg circle {
  filter: drop-shadow(0 0 4px #13bfd5);
}

/* 控制台图表柱状图动画 */
.console-chart .chart-grid i {
  animation: chart-grow 1.5s ease-out forwards;
  transform-origin: bottom;
}

.console-chart .chart-grid i:nth-child(1) { animation-delay: 0.05s; }
.console-chart .chart-grid i:nth-child(2) { animation-delay: 0.1s; }
.console-chart .chart-grid i:nth-child(3) { animation-delay: 0.15s; }
.console-chart .chart-grid i:nth-child(4) { animation-delay: 0.2s; }
.console-chart .chart-grid i:nth-child(5) { animation-delay: 0.25s; }
.console-chart .chart-grid i:nth-child(6) { animation-delay: 0.3s; }
.console-chart .chart-grid i:nth-child(7) { animation-delay: 0.35s; }
.console-chart .chart-grid i:nth-child(8) { animation-delay: 0.4s; }
.console-chart .chart-grid i:nth-child(9) { animation-delay: 0.45s; }
.console-chart .chart-grid i:nth-child(10) { animation-delay: 0.5s; }
.console-chart .chart-grid i:nth-child(11) { animation-delay: 0.55s; }
.console-chart .chart-grid i:nth-child(12) { animation-delay: 0.6s; }

@keyframes chart-grow {
  from {
    transform: scaleY(0);
    opacity: 0;
  }
  to {
    transform: scaleY(1);
    opacity: 1;
  }
}

/* 拓扑图节点呼吸动画 */
.topology-node {
  animation: node-breathe 3s ease-in-out infinite;
}

.topology-node:nth-child(odd) {
  animation-delay: 0.5s;
}

@keyframes node-breathe {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.9;
  }
}

/* 按钮发光效果增强 */
.button:hover {
  box-shadow: 0 8px 24px rgba(8, 120, 249, 0.35),
              0 0 20px rgba(8, 120, 249, 0.3);
  animation: button-glow 1.5s ease-in-out infinite;
}

@keyframes button-glow {
  0%, 100% {
    box-shadow: 0 8px 24px rgba(8, 120, 249, 0.35),
                0 0 20px rgba(8, 120, 249, 0.3);
  }
  50% {
    box-shadow: 0 8px 24px rgba(8, 120, 249, 0.5),
                0 0 30px rgba(8, 120, 249, 0.4);
  }
}

/* Demo节点闪烁效果 */
.demo-node i {
  animation: node-blink 2s ease-in-out infinite;
}

.demo-node:nth-child(even) i {
  animation-delay: 1s;
}

@keyframes node-blink {
  0%, 100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

/* 雷达扫描增强 */
.demo-radar {
  animation: radar-scan 4s linear infinite;
}

@keyframes radar-scan {
  0% {
    transform: rotate(0deg);
    opacity: 0.3;
  }
  50% {
    opacity: 0.6;
  }
  100% {
    transform: rotate(360deg);
    opacity: 0.3;
  }
}

/* 产品卡片序号动画 */
.product-card .product-index {
  transition: transform 0.3s ease;
}

.product-card:hover .product-index {
  transform: scale(1.1) rotate(5deg);
}

/* 优势卡片序号放大 */
.advantage span {
  transition: transform 0.3s ease, color 0.3s ease;
}

.advantage:hover span {
  transform: scale(1.2);
  color: var(--blue);
}

/* 架构视图层级动画 */
.arch-layer {
  animation: layer-float 3s ease-in-out infinite;
}

.arch-layer:nth-child(1) {
  animation-delay: 0s;
}

.arch-layer:nth-child(2) {
  animation-delay: 0.3s;
}

.arch-layer:nth-child(3) {
  animation-delay: 0.6s;
}

@keyframes layer-float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-3px);
  }
}

/* 返回顶部按钮增强 */
.back-top.visible {
  animation: bounce-in 0.4s ease;
}

@keyframes bounce-in {
  0% {
    transform: scale(0);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

.back-top:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 16px rgba(21, 34, 56, 0.25);
}

/* 品牌标志旋转动画 */
.brand-mark {
  transition: transform 0.3s ease;
}

.brand:hover .brand-mark {
  animation: brand-spin 0.6s ease;
}

@keyframes brand-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* 导航链接下划线动画增强 */
.nav-link::after {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover::after {
  animation: underline-wave 0.6s ease;
}

@keyframes underline-wave {
  0%, 100% {
    transform: scaleX(1);
  }
  50% {
    transform: scaleX(1.2);
  }
}

/* 文本链接箭头动画 */
.text-link .arrow-icon {
  display: inline-block;
  transition: transform 0.3s ease;
}

.text-link:hover .arrow-icon {
  animation: arrow-bounce 0.6s ease infinite;
}

@keyframes arrow-bounce {
  0%, 100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(5px);
  }
}

/* Mega菜单平滑展开 */
.mega-menu {
  animation: mega-slide-down 0.3s ease;
}

@keyframes mega-slide-down {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 过滤按钮激活动画 */
.filter-bar button.active,
.demo-filters button.active {
  animation: filter-activate 0.3s ease;
}

@keyframes filter-activate {
  0% {
    transform: scale(0.95);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

/* ===== 新增内容板块样式 ===== */

/* 技术栈展示 */
.tech-section {
  background: var(--surface);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.tech-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.tech-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.tech-card h3 {
  font-size: 18px;
  margin-bottom: 18px;
  color: var(--ink);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tags span {
  background: var(--surface-blue);
  color: var(--blue);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 6px;
  white-space: nowrap;
  transition: background 0.2s ease, transform 0.2s ease;
}

.tech-tags span:hover {
  background: var(--blue);
  color: var(--white);
  transform: scale(1.05);
}

/* 客户评价 */
.testimonials-section {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-blue) 100%);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.testimonial-card {
  background: var(--white);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 4px 16px rgba(21, 34, 56, 0.08);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.testimonial-card:hover {
  box-shadow: 0 8px 32px rgba(21, 34, 56, 0.12);
  transform: translateY(-4px);
}

.testimonial-card blockquote {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  margin: 0 0 24px 0;
  font-style: italic;
  position: relative;
  padding-left: 20px;
}

.testimonial-card blockquote::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -5px;
  font-size: 48px;
  color: var(--blue);
  opacity: 0.3;
  font-family: Georgia, serif;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.testimonial-author strong {
  font-size: 16px;
  color: var(--ink);
}

.testimonial-author span {
  font-size: 14px;
  color: var(--muted);
}

.testimonial-author small {
  font-size: 13px;
  color: var(--blue);
  font-weight: 500;
}

/* 客户Logo墙 */
.customers-band {
  background: var(--white);
  padding: 48px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.customers-label {
  display: block;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 32px;
}

.customer-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 24px;
  align-items: center;
  justify-items: center;
}

.customer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px;
  transition: transform 0.3s ease;
  cursor: default;
}

.customer-logo:hover {
  transform: scale(1.1);
}

.customer-icon {
  font-size: 48px;
  filter: grayscale(0.3);
  transition: filter 0.3s ease;
}

.customer-logo:hover .customer-icon {
  filter: grayscale(0);
}

.customer-logo small {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

/* 资质认证 */
.cert-section {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
}

.cert-section h3 {
  text-align: center;
  font-size: 20px;
  margin-bottom: 32px;
  color: var(--ink);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.cert-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px;
  background: var(--surface-blue);
  border-radius: 12px;
  border: 2px solid transparent;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.cert-badge:hover {
  border-color: var(--blue);
  transform: translateY(-4px);
}

.cert-badge strong {
  font-size: 18px;
  color: var(--blue);
  margin-bottom: 8px;
}

.cert-badge span {
  font-size: 13px;
  color: var(--text);
}

/* FAQ */
.faq-section {
  background: var(--surface);
}

.faq-list {
  max-width: 900px;
  margin: 48px auto 0;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 4px 16px rgba(21, 34, 56, 0.08);
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 28px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  background: var(--surface);
}

.faq-number {
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  min-width: 32px;
}

.faq-item summary strong {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 300;
  color: var(--blue);
  transition: transform 0.3s ease;
  font-style: normal;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 28px 28px 72px;
  animation: faq-expand 0.3s ease;
}

@keyframes faq-expand {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.faq-answer p {
  margin: 0;
  color: var(--text);
  line-height: 1.7;
}

/* 使用场景 */
.use-cases-section {
  background: var(--surface);
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.use-case-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.use-case-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.use-case-card span {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 12px;
}

.use-case-card h3 {
  font-size: 16px;
  margin-bottom: 12px;
  color: var(--ink);
}

.use-case-card p {
  font-size: 14px;
  color: var(--text);
  margin: 0;
  line-height: 1.6;
}

/* 定价 */
.pricing-section {
  background: linear-gradient(180deg, var(--white) 0%, var(--surface) 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.pricing-card {
  background: var(--white);
  border: 2px solid var(--line);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.pricing-card:hover {
  border-color: var(--blue);
  box-shadow: 0 12px 40px rgba(8, 120, 249, 0.15);
  transform: translateY(-8px);
}

.pricing-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  color: var(--ink);
}

.pricing-card > p {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 24px;
  min-height: 42px;
}

.pricing-devices {
  font-size: 15px;
  color: var(--muted);
  padding: 16px;
  background: var(--surface);
  border-radius: 8px;
  margin-bottom: 20px;
}

.pricing-price {
  margin-bottom: 28px;
}

.pricing-price strong {
  font-size: 32px;
  color: var(--blue);
}

.pricing-card .button {
  width: 100%;
  justify-content: center;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .tech-grid,
  .testimonial-grid,
  .use-case-grid {
    grid-template-columns: 1fr;
  }

  .customer-logos {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .faq-answer {
    padding-left: 28px;
  }

  .testimonial-card blockquote {
    font-size: 15px;
  }
}