:root {
  color-scheme: light;
  --orange-600: #f26b1d;
  --orange-700: #d95713;
  --orange-100: #fff0e5;
  --ink: #1f2933;
  --muted: #667085;
  --line: #e7e1dc;
  --paper: #fffaf6;
  --white: #ffffff;
  --teal: #167a7f;
  --shadow: 0 16px 40px rgba(31, 41, 51, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

section[id] {
  scroll-margin-top: 88px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 5vw, 72px);
  border-bottom: 1px solid rgba(231, 225, 220, 0.88);
  background: rgba(255, 250, 246, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: block;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  line-height: 1.2;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  border-radius: 8px;
  padding: 9px 12px;
  color: #344054;
  font-size: 14px;
}

.site-nav a:not(.button):hover,
.site-nav a:not(.button):focus-visible {
  background: var(--orange-100);
  color: var(--orange-700);
  outline: none;
}

.site-nav a:not(.button).is-active {
  background: var(--orange-100);
  color: var(--orange-700);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 10px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
}

.section {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: 84px 0;
}

.section.compact {
  padding-top: 64px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  min-height: calc(100vh - 72px);
  padding-top: 42px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--orange-700);
  font-size: 14px;
  font-weight: 700;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 20px;
  font-size: clamp(38px, 5.8vw, 60px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.hero-text {
  max-width: 640px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 18px;
}

.hero-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 11px 18px;
  font-weight: 700;
}

.button.primary {
  background: var(--orange-600);
  color: var(--white);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--orange-700);
  outline: none;
}

.button.secondary {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: var(--orange-600);
  color: var(--orange-700);
  outline: none;
}

.nav-cta {
  min-height: 38px;
  padding: 8px 14px;
  font-size: 14px;
}

.hero-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  align-content: center;
  min-height: 430px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(242, 107, 29, 0.14), rgba(22, 122, 127, 0.1)),
    var(--white);
  box-shadow: var(--shadow);
}

.hero-panel dl {
  position: relative;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 26px;
}

.hero-panel dl div,
.service-card,
.feature-item,
.deploy-card,
.timeline li {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
}

.hero-panel dl div {
  padding: 14px 16px;
}

.hero-panel dt {
  font-weight: 800;
}

.hero-panel dt::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--teal);
  vertical-align: 1px;
}

.hero-panel dd {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 14px;
}

@media (prefers-reduced-motion: no-preference) {
  .hero-panel dl div {
    animation: pipeline-in 0.5s ease backwards;
  }

  .hero-panel dl div:nth-child(2) {
    animation-delay: 0.08s;
  }

  .hero-panel dl div:nth-child(3) {
    animation-delay: 0.16s;
  }

  .hero-panel dl div:nth-child(4) {
    animation-delay: 0.24s;
  }

  @keyframes pipeline-in {
    from {
      opacity: 0;
      transform: translateY(10px);
    }

    to {
      opacity: 1;
      transform: none;
    }
  }
}

.section-heading {
  max-width: 720px;
  margin-bottom: 28px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-intro {
  margin: 18px 0 0;
  color: var(--muted);
}

.release-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: 24px;
}

.delivery-example {
  padding: 26px;
  border: 1px solid #c6dedd;
  border-radius: 8px;
  background: #edf6f4;
}

.delivery-example .eyebrow {
  color: var(--teal);
}

.environment-list {
  margin: 24px 0;
}

.environment-list div {
  padding: 14px 0;
  border-top: 1px solid #c6dedd;
}

.environment-list dt {
  color: var(--teal);
  font-weight: 700;
}

.environment-list dd {
  margin: 4px 0 0;
}

.detail-note {
  margin: 18px 0 0;
  color: #52616b;
  font-size: 14px;
}

.question-list {
  display: grid;
  gap: 12px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.question-list li {
  padding: 14px 16px;
  border: 1px solid #c6dedd;
  border-radius: 8px;
  background: var(--white);
  color: #344054;
}

.market-grid .eyebrow {
  flex: none;
  color: var(--teal);
}

.market-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin: 24px 0 0;
  padding: 24px 24px 24px 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--orange-100);
}

.market-steps li {
  padding-left: 4px;
}

.market-steps li::marker {
  color: var(--orange-700);
  font-weight: 800;
}

.market-steps strong,
.market-steps span {
  display: block;
}

.market-steps span {
  margin-top: 6px;
  color: #52616b;
  font-size: 14px;
}

.node-band {
  margin-top: 24px;
  padding: 26px;
  border: 1px solid #c6dedd;
  border-radius: 8px;
  background: #edf6f4;
}

.node-band h3 {
  color: var(--teal);
}

.node-band p {
  max-width: 920px;
  margin-bottom: 0;
  color: #52616b;
}

.compatibility-table {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--white);
}

.compatibility-table table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.compatibility-table caption {
  padding: 16px 20px;
  text-align: left;
  color: var(--teal);
  font-weight: 700;
}

.compatibility-table th,
.compatibility-table td {
  padding: 18px 20px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}

.compatibility-table th:first-child {
  width: 22%;
}

.compatibility-table thead {
  background: var(--orange-100);
}

.compatibility-table td {
  color: #52616b;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
}

.faq-list details[open] {
  background: var(--white);
}

.faq-list summary {
  padding: 22px 0;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
}

.faq-list summary::marker {
  color: var(--teal);
}

.faq-list summary:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 4px;
}

.faq-list p {
  max-width: 880px;
  margin-bottom: 24px;
  color: #52616b;
}

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

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

.service-card {
  min-height: 238px;
  padding: 22px;
  display: flex;
  flex-direction: column;
}

.service-card p {
  flex: 1;
}

.card-chips {
  display: block;
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.service-card p,
.feature-item span,
.timeline p,
.contact-band p,
address {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: clamp(28px, 5vw, 64px);
}

.feature-list {
  display: grid;
  gap: 14px;
}

.feature-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  padding: 18px 20px;
}

.feature-item strong {
  color: var(--orange-700);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  min-height: 174px;
  padding: 20px;
}

.timeline span {
  display: block;
  margin-bottom: 12px;
  color: var(--teal);
  font-weight: 800;
}

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

.deploy-card {
  padding: 22px;
}

.deploy-points {
  margin: 20px 0 0;
  padding-left: 20px;
  color: #52616b;
  font-size: 14px;
}

.deploy-points li + li {
  margin-top: 10px;
}

.deploy-points li::marker {
  color: var(--teal);
}

.scenario-grid .eyebrow {
  flex: none;
  color: var(--teal);
}

.contact-band {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 390px);
  gap: 28px;
  width: min(1120px, calc(100% - 36px));
  margin: 22px auto 64px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
  padding: clamp(28px, 5vw, 48px);
}

.contact-band h2 {
  margin-bottom: 12px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.contact-band p,
.contact-band address {
  color: rgba(255, 255, 255, 0.76);
}

.contact-band .demo-note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
}

address {
  display: grid;
  gap: 10px;
  font-style: normal;
}

.contact-side {
  display: grid;
  gap: 20px;
  align-content: start;
}

.contact-qr {
  margin: 0;
  justify-self: start;
  display: grid;
  justify-items: center;
  gap: 8px;
  background: var(--white);
  border-radius: 8px;
  padding: 12px;
}

.contact-qr img {
  display: block;
  width: 160px;
  height: 160px;
}

.contact-qr figcaption {
  color: var(--ink);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px 18px;
  border-top: 1px solid var(--line);
  padding: 24px 18px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.police-beian {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.police-beian img {
  flex: 0 0 auto;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--orange-700);
  outline: none;
}

@media (max-width: 920px) {
  .site-header {
    min-height: 66px;
    padding: 12px 18px;
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--white);
    padding: 8px;
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    padding: 12px;
  }

  .hero,
  .split,
  .release-layout,
  .contact-band {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
  }

  .hero-panel {
    min-height: 380px;
  }

  .card-grid,
  .card-grid.cols-3,
  .timeline {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .brand small {
    display: none;
  }

  .section {
    width: min(100% - 28px, 1120px);
    padding: 56px 0;
  }

  .hero {
    padding-top: 36px;
  }

  h1 {
    font-size: clamp(30px, 9vw, 38px);
  }

  h2 {
    font-size: 28px;
  }

  .hero-text {
    font-size: 16px;
  }

  .hero-actions .button,
  .contact-actions .button {
    width: 100%;
  }

  .hero-panel {
    min-height: 330px;
  }

  .hero-panel dl {
    padding: 18px;
  }

  .card-grid,
  .card-grid.cols-3,
  .timeline {
    grid-template-columns: 1fr;
  }

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

  .market-steps {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .service-card,
  .timeline li {
    min-height: 0;
  }

  .feature-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .contact-band {
    width: min(100% - 28px, 1120px);
    margin-bottom: 42px;
  }

  .contact-qr {
    justify-self: center;
  }

  .compatibility-table th,
  .compatibility-table td {
    padding: 12px 8px;
    font-size: 14px;
  }

  .delivery-example,
  .node-band {
    padding: 20px;
  }

  .faq-list details {
    padding: 0 12px;
  }
}