:root {
  --bg: #f4f8ff;
  --bg-strong: #edf4ff;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-soft: rgba(255, 255, 255, 0.72);
  --surface-blue: linear-gradient(180deg, #ffffff 0%, #f3f8ff 100%);
  --text: #11233f;
  --muted: #6a7f9c;
  --line: rgba(79, 141, 255, 0.14);
  --line-strong: rgba(79, 141, 255, 0.22);
  --primary: #2f6bff;
  --primary-strong: #1b55ea;
  --primary-soft: #e9f1ff;
  --cyan: #32c5ff;
  --accent: #6d7fff;
  --shadow: 0 26px 70px rgba(43, 88, 173, 0.12);
  --shadow-soft: 0 16px 40px rgba(43, 88, 173, 0.08);
  --radius: 30px;
  --radius-sm: 22px;
  --container: 1380px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at 10% 8%, rgba(50, 197, 255, 0.14), transparent 28%),
    radial-gradient(circle at 82% 12%, rgba(47, 107, 255, 0.14), transparent 30%),
    linear-gradient(180deg, #f8fbff 0%, #f3f7ff 44%, #edf4ff 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(47, 107, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 107, 255, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.58), transparent 92%);
}

.page-glow {
  position: fixed;
  z-index: 0;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  opacity: 0.6;
}

.page-glow-left {
  top: -120px;
  left: -120px;
  background: rgba(50, 197, 255, 0.2);
}

.page-glow-right {
  top: 120px;
  right: -150px;
  background: rgba(47, 107, 255, 0.18);
}

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

button,
input,
textarea {
  font: inherit;
}

.site-shell {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 24px), var(--container));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 18px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 22px;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.76);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  color: #fff;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
  box-shadow: 0 14px 30px rgba(47, 107, 255, 0.2);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.16;
}

.brand-text strong {
  font-size: 1rem;
}

.brand-text small {
  color: var(--muted);
}

.nav,
.button,
.hero-copy h1,
.section-heading h2,
.feature-card h3,
.scenario-card h3,
.app-info-card h3,
.contact-card h2,
.compliance-card h2 {
  font-family: "Trebuchet MS", "Microsoft YaHei UI", "PingFang SC", sans-serif;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.95rem;
  font-weight: 600;
}

.nav a {
  color: var(--muted);
  transition: color 180ms ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--primary);
}

.nav-cta {
  padding: 12px 18px;
  color: #fff !important;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  box-shadow: 0 12px 28px rgba(47, 107, 255, 0.2);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(47, 107, 255, 0.12);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.94);
  color: var(--text);
  cursor: pointer;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.08fr);
  gap: 28px;
  align-items: center;
  min-height: calc(100vh - 124px);
  padding: 54px 0 24px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2.2rem, 3.8vw, 3.8rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.hero-text,
.section-heading p,
.feature-card span,
.scenario-card span,
.app-info-card span,
.contact-card p,
.contact-notes p,
.footer p,
.footer span,
.compliance-card p,
.compliance-list span,
.platform-points span,
.side-card span,
.console-chart p,
.console-grid span,
.metrics-strip span,
.hero-panel-small span {
  color: var(--muted);
  line-height: 1.78;
}

.hero-text {
  max-width: 720px;
  margin: 18px 0 0;
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  box-shadow: 0 18px 34px rgba(47, 107, 255, 0.2);
}

.button.secondary {
  color: var(--primary);
  border-color: rgba(47, 107, 255, 0.14);
  background: rgba(255, 255, 255, 0.86);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.hero-tags span,
.trust-strip span,
.console-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
}

.hero-tags span {
  color: var(--primary);
  background: rgba(47, 107, 255, 0.08);
  border: 1px solid rgba(47, 107, 255, 0.1);
}

.hero-stage {
  position: relative;
  min-height: 560px;
}

.hero-console,
.hero-panel-small,
.device-card,
.metrics-strip,
.feature-card,
.platform-main,
.side-card,
.app-phone-shell,
.app-info-card,
.scenario-card,
.compliance-card,
.contact-card {
  background: var(--surface-blue);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.hero-console {
  position: absolute;
  inset: 26px 56px auto 0;
  padding: 24px;
  border-radius: 34px;
}

.console-top,
.platform-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.console-status {
  color: var(--primary);
  background: rgba(47, 107, 255, 0.08);
}

.console-chart {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  align-items: center;
  margin-top: 18px;
  padding: 18px;
  border-radius: 24px;
  background: linear-gradient(135deg, #f8fbff 0%, #eef5ff 100%);
}

.chart-column {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 148px;
}

.chart-column span {
  flex: 1;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(180deg, var(--cyan), var(--primary));
}

.chart-summary strong,
.console-grid strong,
.feature-card h3,
.scenario-card h3,
.app-info-card h3,
.compliance-list strong,
.platform-points strong,
.side-card strong,
.contact-notes strong {
  color: var(--text);
}

.chart-summary strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1.32rem;
}

.console-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.console-grid article {
  padding: 18px;
  border-radius: 22px;
  background: #f9fbff;
  border: 1px solid rgba(47, 107, 255, 0.08);
}

.console-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.75rem;
}

.hero-panel-small {
  position: absolute;
  padding: 20px 22px;
  border-radius: 24px;
}

.hero-panel-small p,
.feature-card p,
.scenario-card p,
.app-info-card p,
.side-card p,
.app-banner p {
  margin: 0 0 10px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero-panel-small strong,
.side-card strong,
.platform-node strong,
.app-banner strong,
.device-info-card strong,
.contact-card h2,
.compliance-card h2 {
  display: block;
}

.hero-panel-app {
  top: 0;
  right: 0;
  width: 250px;
}

.hero-panel-side {
  right: 0;
  bottom: 6px;
  width: 280px;
}

.device-card {
  position: absolute;
  right: 124px;
  bottom: 62px;
  width: 220px;
  padding: 12px;
  border-radius: 34px;
  transform: rotate(9deg);
}

.device-shell {
  padding: 14px;
  border-radius: 28px;
  background: linear-gradient(180deg, #234582 0%, #10284f 100%);
}

.device-head,
.app-phone-notch {
  width: 86px;
  height: 18px;
  margin: 0 auto 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.24);
}

.device-screen,
.app-phone-screen {
  padding: 16px;
  border-radius: 24px;
  color: #fff;
  background:
    radial-gradient(circle at top right, rgba(50, 197, 255, 0.26), transparent 32%),
    linear-gradient(180deg, #1a4fd5 0%, #123b9e 100%);
}

.device-screen-top,
.device-mini-grid,
.app-list article {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.device-screen-top {
  margin-bottom: 14px;
  font-size: 0.82rem;
  opacity: 0.86;
}

.device-map {
  height: 110px;
  margin-bottom: 14px;
  border-radius: 20px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.16) 1px, transparent 1px),
    linear-gradient(135deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.06));
  background-size: 24px 24px, 24px 24px, auto;
}

.device-info-card {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.14);
}

.device-info-card p {
  margin: 0 0 8px;
  font-size: 0.8rem;
  opacity: 0.86;
}

.device-mini-grid {
  gap: 12px;
  margin-top: 12px;
}

.device-mini-grid div {
  flex: 1;
  padding: 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.12);
}

.device-mini-grid span {
  display: block;
  margin-bottom: 8px;
  font-size: 0.75rem;
  opacity: 0.86;
}

.device-mini-grid strong {
  font-size: 1rem;
}

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding: 18px;
  border-radius: 28px;
  margin-top: 10px;
}

.metrics-strip article {
  padding: 20px 18px;
  border-radius: 22px;
  background: rgba(243, 248, 255, 0.72);
  border: 1px solid rgba(47, 107, 255, 0.08);
}

.metrics-strip strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.section {
  padding: 64px 0 8px;
}

.section-alt {
  position: relative;
}

.section-alt::before {
  content: "";
  position: absolute;
  inset: 44px -24px 0;
  z-index: -1;
  border-radius: 40px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.52), rgba(234, 242, 255, 0.72));
}

.section-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

.section-heading h2,
.contact-card h2,
.compliance-card h2 {
  margin: 0;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.section-heading p:last-child {
  margin: 16px 0 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(2, 1fr);
  gap: 18px;
}

.feature-card {
  padding: 28px;
  border-radius: 28px;
}

.feature-card-highlight {
  grid-row: span 2;
  background:
    radial-gradient(circle at top right, rgba(50, 197, 255, 0.16), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #edf4ff 100%);
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 1.35rem;
  line-height: 1.4;
}

.platform-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.platform-main,
.platform-side,
.app-content {
  display: grid;
  gap: 18px;
}

.platform-main {
  padding: 28px;
  border-radius: 30px;
}

.platform-header span {
  color: var(--muted);
}

.platform-core {
  position: relative;
  min-height: 360px;
  margin-top: 20px;
  border-radius: 28px;
  background:
    linear-gradient(rgba(47, 107, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 107, 255, 0.05) 1px, transparent 1px),
    linear-gradient(180deg, #f9fbff 0%, #eef4ff 100%);
  background-size: 32px 32px, 32px 32px, auto;
}

.platform-core::before,
.platform-core::after {
  content: "";
  position: absolute;
  inset: 50%;
  width: 210px;
  height: 210px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 1px dashed rgba(47, 107, 255, 0.18);
}

.platform-core::after {
  width: 310px;
  height: 310px;
}

.platform-node {
  position: absolute;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(47, 107, 255, 0.1);
  box-shadow: var(--shadow-soft);
}

.platform-node span {
  color: var(--muted);
}

.node-center {
  top: 50%;
  left: 50%;
  min-width: 180px;
  text-align: center;
  transform: translate(-50%, -50%);
}

.node-top {
  top: 36px;
  left: 50%;
  transform: translateX(-50%);
}

.node-right {
  top: 50%;
  right: 36px;
  transform: translateY(-50%);
}

.node-bottom {
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
}

.node-left {
  top: 50%;
  left: 36px;
  transform: translateY(-50%);
}

.platform-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.platform-points div,
.side-card,
.app-info-card,
.scenario-card,
.compliance-list article,
.contact-notes,
.contact-form input,
.contact-form textarea {
  border: 1px solid rgba(47, 107, 255, 0.1);
}

.platform-points div {
  padding: 18px;
  border-radius: 20px;
  background: rgba(243, 248, 255, 0.8);
}

.side-card {
  padding: 24px;
  border-radius: 26px;
}

.app-showcase {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 18px;
  align-items: stretch;
}

.app-phone {
  display: grid;
}

.app-phone-shell {
  padding: 14px;
  border-radius: 34px;
}

.app-phone-screen {
  min-height: 100%;
}

.app-banner strong {
  font-size: 1.56rem;
}

.app-route-card {
  padding: 18px;
  margin-top: 18px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.14);
}

.app-route-card span {
  display: block;
  margin-bottom: 8px;
  font-size: 0.85rem;
  opacity: 0.86;
}

.app-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.app-list article {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.12);
}

.app-list span {
  font-size: 0.8rem;
  opacity: 0.86;
}

.app-info-card {
  padding: 26px;
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.84);
}

.app-info-card h3,
.scenario-card h3 {
  margin: 0 0 12px;
  font-size: 1.26rem;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.scenario-card {
  padding: 28px;
  border-radius: 28px;
}

.compliance-card {
  display: grid;
  grid-template-columns: 1fr 1.02fr;
  gap: 24px;
  padding: 34px;
  border-radius: 34px;
  background:
    radial-gradient(circle at top right, rgba(50, 197, 255, 0.16), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #edf4ff 100%);
}

.compliance-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.compliance-list article {
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.76);
}

.compliance-list strong {
  display: block;
  margin-bottom: 10px;
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr 1.04fr;
  gap: 28px;
  padding: 32px;
  border-radius: 34px;
}

.contact-notes {
  margin-top: 22px;
  padding: 18px 20px;
  border-radius: 20px;
  background: rgba(243, 248, 255, 0.82);
}

.contact-notes p {
  margin: 0;
}

.contact-notes p + p {
  margin-top: 10px;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 10px;
}

.contact-form span {
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 15px 16px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 18px;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.contact-form input[readonly],
.contact-form textarea[readonly] {
  color: rgba(17, 35, 63, 0.92);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(47, 107, 255, 0.28);
  box-shadow: 0 0 0 4px rgba(47, 107, 255, 0.08);
}

.full {
  grid-column: 1 / -1;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 38px 0 54px;
}

.footer strong {
  font-size: 1.15rem;
}

.footer div:last-child {
  display: grid;
  gap: 8px;
  text-align: right;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 680ms ease, transform 680ms ease;
}

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

@media (max-width: 1120px) {
  .hero,
  .app-showcase,
  .compliance-card,
  .contact-card,
  .platform-layout {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .scenario-grid,
  .metrics-strip,
  .compliance-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .hero-stage {
    min-height: 700px;
  }
}

@media (max-width: 860px) {
  .site-shell {
    width: min(calc(100% - 18px), var(--container));
  }

  .topbar {
    top: 10px;
    margin-top: 12px;
    padding: 12px 12px 12px 16px;
    border-radius: 26px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .nav {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(47, 107, 255, 0.12);
    border-radius: 24px;
    box-shadow: var(--shadow);
  }

  .nav.is-open {
    display: flex;
  }

  .hero,
  .feature-grid,
  .scenario-grid,
  .metrics-strip,
  .compliance-list,
  .contact-form,
  .platform-points {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 28px;
    padding: 28px 0 18px;
  }

  .hero-copy h1 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .hero-actions,
  .footer {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-stage {
    min-height: 760px;
  }

  .hero-console {
    inset: 0 auto auto 0;
    width: 100%;
  }

  .hero-panel-app {
    top: auto;
    left: 0;
    right: auto;
    bottom: 24px;
  }

  .hero-panel-side {
    right: 0;
    bottom: 24px;
  }

  .device-card {
    right: 60px;
    bottom: 160px;
  }

  .section {
    padding-top: 56px;
  }

  .footer div:last-child {
    text-align: left;
  }
}

@media (max-width: 560px) {
  .hero-stage {
    min-height: auto;
    display: grid;
    gap: 18px;
  }

  .hero-console,
  .hero-panel-small,
  .device-card {
    position: relative;
    inset: auto;
    right: auto;
    bottom: auto;
    width: 100%;
    transform: none;
  }

  .console-chart,
  .console-grid {
    grid-template-columns: 1fr;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

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