:root {
  color-scheme: light;
  --ink: #121418;
  --muted: #626a73;
  --line: #dfe5ea;
  --soft: #f5f7f9;
  --panel: #ffffff;
  --accent: #04a777;
  --accent-dark: #087f5b;
  --blue: #2364aa;
  --gold: #d49b22;
  --radius: 8px;
  --shadow: 0 24px 80px rgba(18, 20, 24, 0.12);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fbfcfd;
  color: var(--ink);
  letter-spacing: 0;
}

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

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

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 20;
  background: var(--ink);
  color: #fff;
  padding: 10px 14px;
  border-radius: 6px;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 252, 253, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.trust-bar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 8px 24px;
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 7px;
  object-fit: cover;
}

.brand-wordmark {
  width: 124px;
  height: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #2f363d;
  font-size: 14px;
}

.nav-links a {
  white-space: nowrap;
}

.nav-cta,
.button {
  border: 1px solid var(--ink);
  border-radius: 7px;
  font-weight: 700;
}

.nav-cta {
  padding: 9px 14px;
  background: var(--ink);
  color: #fff;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 48px;
  align-items: center;
  max-width: 1180px;
  min-height: calc(100vh - 106px);
  margin: 0 auto;
  padding: 68px 24px 46px;
}

.eyebrow,
.section-label {
  margin: 0 0 18px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(46px, 8vw, 92px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.25;
}

.hero-copy {
  max-width: 650px;
  color: #3a424a;
  font-size: clamp(18px, 2.3vw, 24px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
}

.button.primary {
  background: var(--ink);
  color: #fff;
}

.button.secondary {
  background: #fff;
}

.hero-visual {
  position: relative;
  border: 1px solid rgba(18, 20, 24, 0.12);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 48%, rgba(4, 167, 119, 0.2), transparent 34%),
    linear-gradient(135deg, #f6f9fc 0%, #ffffff 44%, #eef4f8 100%);
  box-shadow: var(--shadow);
}

.ecosystem-motion {
  position: relative;
  min-height: 540px;
  isolation: isolate;
}

.ecosystem-motion::before {
  position: absolute;
  inset: 34px;
  content: "";
  border-radius: 50%;
  background:
    linear-gradient(90deg, rgba(35, 100, 170, 0.12) 1px, transparent 1px),
    linear-gradient(0deg, rgba(35, 100, 170, 0.1) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle, #000 0 58%, transparent 76%);
  opacity: 0.55;
}

.orbit-ring,
.flow-path {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.orbit-ring-outer {
  width: min(86%, 470px);
  aspect-ratio: 1;
  border: 1px solid rgba(18, 20, 24, 0.12);
}

.orbit-ring-inner {
  width: min(58%, 310px);
  aspect-ratio: 1;
  border: 1px dashed rgba(4, 167, 119, 0.3);
  animation: spin 18s linear infinite;
}

.flow-path {
  width: min(78%, 420px);
  aspect-ratio: 1;
  border: 2px solid transparent;
  border-top-color: var(--accent);
  border-right-color: rgba(35, 100, 170, 0.65);
  opacity: 0.82;
  filter: drop-shadow(0 0 12px rgba(4, 167, 119, 0.32));
  animation: spin 8s linear infinite;
}

.flow-path-b {
  width: min(68%, 360px);
  border-top-color: var(--gold);
  border-right-color: rgba(212, 155, 34, 0.48);
  animation-duration: 11s;
  animation-direction: reverse;
}

.flow-path-c {
  width: min(50%, 270px);
  border-top-color: var(--blue);
  border-right-color: rgba(4, 167, 119, 0.42);
  animation-duration: 14s;
}

.engine-node,
.platform-core {
  position: absolute;
  z-index: 2;
  border: 1px solid rgba(18, 20, 24, 0.11);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 50px rgba(18, 20, 24, 0.12);
  backdrop-filter: blur(12px);
}

.engine-node {
  display: grid;
  gap: 4px;
  width: 178px;
  min-height: 104px;
  padding: 15px;
  animation: float 5.8s ease-in-out infinite;
}

.engine-node span {
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 900;
}

.engine-node strong {
  color: var(--ink);
  font-size: 16px;
  line-height: 1.15;
}

.engine-node small {
  color: var(--muted);
  line-height: 1.35;
}

.node-traffic {
  left: 42px;
  top: 58px;
}

.node-demand {
  right: 34px;
  top: 96px;
  animation-delay: -1.6s;
}

.node-capability {
  right: 44px;
  bottom: 68px;
  animation-delay: -3.1s;
}

.node-enterprise {
  left: 52px;
  bottom: 58px;
  animation-delay: -4.3s;
}

.platform-core {
  left: 50%;
  top: 50%;
  display: grid;
  width: 210px;
  min-height: 170px;
  place-items: center;
  padding: 22px;
  text-align: center;
  transform: translate(-50%, -50%);
}

.platform-core img {
  width: 58px;
  height: 58px;
  border-radius: 8px;
}

.platform-core strong {
  margin-top: 12px;
  font-size: 20px;
}

.platform-core span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 86px 24px;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: 48px;
}

.intro-copy {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.78;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.pain {
  max-width: none;
  background: var(--soft);
}

.pain > * {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.pain-card {
  min-height: 154px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.pain-card span {
  display: block;
  margin-bottom: 28px;
  color: var(--gold);
  font-weight: 800;
}

.pain-card h3 {
  margin: 0;
}

.value-steps,
.engine-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.step {
  min-height: 250px;
  padding: 22px;
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 40px rgba(18, 20, 24, 0.07);
}

.step span,
.card-topline {
  display: block;
  margin-bottom: 28px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.step p,
.engine-card li,
.model-panel p,
.differentiation .section-heading p {
  color: var(--muted);
  line-height: 1.7;
}

.engines {
  max-width: none;
  background: #101317;
  color: #fff;
}

.engines > * {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

.engines .eyebrow {
  color: #62d6ac;
}

.engines .section-heading {
  margin-bottom: 32px;
}

.engine-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.engine-card {
  min-height: 440px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
}

.engine-card h3 {
  font-size: 26px;
}

.card-position {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.65;
}

.engine-card ul {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.engine-card li {
  color: rgba(255, 255, 255, 0.74);
}

.model-panel {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.model-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.model-list span {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--soft);
  font-weight: 700;
}

.formula {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 40px rgba(18, 20, 24, 0.07);
}

.formula span {
  padding: 11px 13px;
  border-radius: 7px;
  background: var(--soft);
  font-weight: 800;
}

.formula strong {
  color: var(--accent-dark);
}

.workflow {
  max-width: none;
  background: var(--soft);
}

.workflow > * {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

.workflow-list {
  display: grid;
  gap: 12px;
}

.workflow-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.workflow-item span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 7px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.workflow-item p,
.roadmap-card p,
.vision-panel p,
.contact-copy p,
.footer p {
  color: var(--muted);
  line-height: 1.7;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.roadmap-card {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.roadmap-card span {
  color: var(--gold);
  font-weight: 900;
}

.roadmap-card h3 {
  margin-top: 26px;
}

.vision {
  padding-top: 24px;
}

.vision-panel {
  padding: 44px;
  border-radius: var(--radius);
  background: #101317;
  color: #fff;
}

.vision-panel .eyebrow {
  color: #62d6ac;
}

.vision-panel p:not(.eyebrow) {
  max-width: 860px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 18px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 48px;
  align-items: start;
}

.contact-codes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.contact-card,
.contact-note {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 40px rgba(18, 20, 24, 0.07);
}

.contact-card {
  display: grid;
  gap: 14px;
  justify-items: center;
  text-align: center;
}

.contact-card img {
  width: min(100%, 220px);
  aspect-ratio: 1 / 1;
  object-fit: contain;
  padding: 10px;
  border-radius: 20px;
  background: linear-gradient(180deg, #f8fbfd 0%, #eef4f7 100%);
}

.contact-card h3,
.contact-note strong {
  color: var(--ink);
}

.contact-card h3 {
  margin: 0;
  font-size: 22px;
}

.contact-card p,
.contact-note p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.contact-note {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #101317 0%, #1b242d 100%);
  border-color: rgba(255, 255, 255, 0.08);
}

.contact-note strong {
  display: inline-block;
  margin-bottom: 12px;
  color: #fff;
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 30px 24px 42px;
  border-top: 1px solid var(--line);
}

.footer-logo {
  width: 138px;
  height: auto;
  margin-bottom: 10px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}

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

@media (max-width: 860px) {
  .trust-bar {
    flex-direction: column;
    gap: 4px;
  }

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

  .nav {
    position: relative;
  }

  .brand-wordmark {
    width: 112px;
  }

  .nav-links {
    position: absolute;
    left: 24px;
    right: 24px;
    top: calc(100% + 1px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow);
  }

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

  .nav-links a {
    padding: 13px 12px;
  }

  .hero,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 52px;
  }

  .ecosystem-motion {
    min-height: 500px;
  }

  .engine-node {
    width: 158px;
    padding: 13px;
  }

  .node-traffic {
    left: 18px;
    top: 36px;
  }

  .node-demand {
    right: 18px;
    top: 76px;
  }

  .node-capability {
    right: 18px;
    bottom: 50px;
  }

  .node-enterprise {
    left: 20px;
    bottom: 38px;
  }

  .platform-core {
    width: 180px;
    min-height: 150px;
  }

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

  .value-steps,
  .engine-grid,
  .roadmap-grid,
  .contact {
    grid-template-columns: 1fr;
  }

  .contact-codes {
    grid-template-columns: 1fr;
  }

  .step,
  .engine-card {
    min-height: auto;
  }

  .footer {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .trust-bar,
  .nav,
  .hero,
  .section {
    padding-left: 16px;
    padding-right: 16px;
  }

  h1 {
    font-size: 44px;
  }

  h2 {
    font-size: 32px;
  }

  .ecosystem-motion {
    min-height: 460px;
  }

  .engine-node {
    width: 136px;
    min-height: 98px;
    padding: 11px;
  }

  .engine-node strong {
    font-size: 14px;
  }

  .engine-node small {
    font-size: 11px;
  }

  .platform-core {
    width: 156px;
    min-height: 136px;
    padding: 16px;
  }

  .platform-core img {
    width: 48px;
    height: 48px;
  }

  .platform-core strong {
    font-size: 17px;
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .orbit-ring-inner,
  .flow-path,
  .engine-node {
    animation: none;
  }
}