:root {
  --bg: #f7f8fb;
  --paper: #ffffff;
  --ink: #111820;
  --muted: #617080;
  --line: #dce2ea;
  --soft-line: #eef2f6;
  --blue: #0a66ff;
  --blue-deep: #0647bd;
  --cyan: #3fd4ff;
  --slate: #243141;
  --radius: 8px;
  --shadow: 0 22px 60px rgba(17, 24, 32, 0.08);
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

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

button,
input,
textarea {
  font: inherit;
}

.site-shell {
  position: relative;
  overflow: hidden;
}

.topbar {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  border-bottom: 1px solid rgba(220, 226, 234, 0.78);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 40px));
  height: 76px;
  margin: 0 auto;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 178px;
}

.brand img {
  display: block;
  width: 172px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: #334253;
  font-size: 14px;
  font-weight: 560;
}

.nav a {
  transition: color 160ms ease;
}

.nav a:hover {
  color: var(--blue);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.language-switch {
  display: grid;
  grid-template-columns: repeat(3, minmax(42px, auto));
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  background: #f4f6f9;
  border-radius: 999px;
}

.language-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 0 9px;
  border-radius: 999px;
  color: #5c6a78;
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}

.language-switch a.active {
  color: var(--ink);
  background: #fff;
  box-shadow: 0 1px 8px rgba(17, 24, 32, 0.08);
}

.header-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 680;
  line-height: 1;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, color 160ms ease;
}

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

.header-cta {
  padding: 0 18px;
}

.primary-button {
  min-height: 50px;
  padding: 0 24px;
}

.secondary-button {
  min-height: 50px;
  padding: 0 22px;
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.header-cta:hover,
.primary-button:hover {
  background: var(--blue);
  transform: translateY(-1px);
}

.secondary-button:hover {
  border-color: rgba(10, 102, 255, 0.35);
  color: var(--blue-deep);
  transform: translateY(-1px);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
}

.menu-button span {
  display: block;
  width: 17px;
  height: 2px;
  margin: 4px auto;
  border-radius: 999px;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 100vh;
  padding: 156px 0 84px;
  background: #f8fafc;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--line);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(390px, 0.95fr);
  align-items: center;
  gap: 56px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero-copy {
  max-width: 650px;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(48px, 7.4vw, 96px);
  line-height: 0.98;
  font-weight: 720;
  letter-spacing: 0;
}

.hero h1 span {
  color: var(--blue);
}

.hero-lede {
  max-width: 620px;
  margin: 30px 0 0;
  color: #435366;
  font-size: clamp(17px, 1.7vw, 22px);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 40px;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 660px;
  margin-top: 58px;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}

.proof-item strong {
  display: block;
  color: var(--ink);
  font-size: 18px;
  font-weight: 720;
}

.proof-item span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.hero-panel {
  position: relative;
  min-height: 520px;
}

.orbit-card {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border: 1px solid rgba(220, 226, 234, 0.92);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(247, 250, 255, 0.72)),
    radial-gradient(circle at 62% 26%, rgba(10, 102, 255, 0.16), transparent 30%);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.orbit-card::before {
  content: "";
  position: absolute;
  inset: 28px;
  border: 1px solid rgba(10, 102, 255, 0.17);
}

.orbit-card::after {
  content: "";
  position: absolute;
  inset: 72px;
  border: 1px solid rgba(17, 24, 32, 0.08);
}

.hero-symbol {
  width: min(54%, 250px);
  filter: drop-shadow(0 24px 38px rgba(10, 102, 255, 0.14));
}

.signal {
  position: absolute;
  display: grid;
  gap: 6px;
  min-width: 154px;
  padding: 16px 18px;
  border: 1px solid rgba(220, 226, 234, 0.9);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 14px 32px rgba(17, 24, 32, 0.08);
}

.signal strong {
  font-size: 13px;
  font-weight: 720;
}

.signal span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.signal-1 {
  top: 58px;
  right: -18px;
}

.signal-2 {
  bottom: 68px;
  left: -24px;
}

.signal-3 {
  right: 44px;
  bottom: 34px;
}

main {
  background: var(--paper);
}

.section {
  padding: 108px 0;
}

.section.alt {
  background: #f7f9fc;
}

.section.dark {
  color: #fff;
  background: var(--ink);
}

.section-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(280px, 0.5fr);
  align-items: end;
  gap: 44px;
  margin-bottom: 54px;
}

.section h2 {
  margin: 0;
  font-size: clamp(34px, 4.4vw, 58px);
  line-height: 1.04;
  font-weight: 720;
}

.section-intro {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.dark .section-intro {
  color: rgba(255, 255, 255, 0.66);
}

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

.service-item {
  min-height: 262px;
  padding: 34px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.service-index {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 720;
}

.service-item h3,
.scenario h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.24;
  font-weight: 700;
}

.service-item p,
.scenario p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.process {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 54px;
  align-items: stretch;
}

.process-visual {
  position: relative;
  min-height: 560px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 72px);
  overflow: hidden;
}

.process-visual img {
  position: absolute;
  width: 148px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.process-node {
  position: absolute;
  min-width: 162px;
  padding: 17px 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
}

.process-node strong {
  display: block;
  font-size: 14px;
}

.process-node span {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  line-height: 1.45;
}

.node-a {
  top: 52px;
  left: 38px;
}

.node-b {
  top: 118px;
  right: 42px;
}

.node-c {
  right: 58px;
  bottom: 86px;
}

.node-d {
  left: 48px;
  bottom: 48px;
}

.process-list {
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.process-step {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.process-step span {
  color: var(--cyan);
  font-size: 13px;
  font-weight: 760;
}

.process-step h3 {
  margin: 0;
  font-size: 23px;
  line-height: 1.25;
}

.process-step p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 15px;
  line-height: 1.65;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.scenario {
  min-height: 238px;
  padding: 36px;
  background: #fff;
}

.scenario-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 44px;
}

.scenario-top img {
  width: 42px;
  height: auto;
}

.scenario-top span {
  color: #91a0af;
  font-size: 12px;
  font-weight: 760;
}

.global-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: 48px;
  align-items: center;
  padding: 54px;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, #fff 0%, rgba(248, 250, 252, 0.86) 100%),
    radial-gradient(circle at 80% 32%, rgba(10, 102, 255, 0.16), transparent 34%);
}

.global-band h2 {
  max-width: 640px;
}

.language-panel {
  display: grid;
  gap: 12px;
}

.language-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  padding: 0 18px;
  border: 1px solid var(--line);
  background: #fff;
}

.language-row strong {
  font-size: 15px;
}

.language-row span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 760;
}

.contact {
  position: relative;
  padding: 112px 0;
  color: #fff;
  background:
    radial-gradient(circle at 78% 18%, rgba(10, 102, 255, 0.24), transparent 33%),
    linear-gradient(180deg, #101820, #121b25);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.54fr);
  gap: 58px;
  align-items: end;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.contact h2 {
  margin: 0;
  font-size: clamp(40px, 5.6vw, 78px);
  line-height: 1.02;
  font-weight: 720;
}

.contact p {
  max-width: 650px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 18px;
  line-height: 1.7;
}

.contact-card {
  display: grid;
  gap: 18px;
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
}

.contact-card a {
  display: block;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.contact-card span {
  display: block;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
  line-height: 1.5;
}

.footer {
  background: #0d141b;
  color: rgba(255, 255, 255, 0.68);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 40px));
  min-height: 92px;
  margin: 0 auto;
  gap: 24px;
  font-size: 13px;
}

.footer img {
  width: 118px;
  filter: brightness(0) invert(1);
  opacity: 0.88;
}

@media (max-width: 980px) {
  .topbar-inner {
    width: min(100% - 28px, 760px);
  }

  .brand img {
    width: 150px;
  }

  .menu-button {
    display: block;
  }

  .nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 20px 24px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.98);
  }

  .nav a {
    padding: 16px 0;
    border-bottom: 1px solid var(--soft-line);
    font-size: 17px;
  }

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

  .header-cta {
    display: none;
  }

  .language-switch {
    grid-template-columns: repeat(3, 38px);
  }

  .language-switch a {
    min-height: 28px;
    padding: 0;
    font-size: 11px;
  }

  .hero {
    min-height: auto;
    padding: 126px 0 54px;
  }

  .hero-inner,
  .section-head,
  .process,
  .global-band,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .hero-inner,
  .section-inner,
  .contact-inner {
    width: min(100% - 28px, 760px);
  }

  .hero-panel {
    min-height: 420px;
  }

  .hero-proof,
  .service-grid,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .service-item {
    min-height: auto;
  }

  .section {
    padding: 76px 0;
  }

  .section-head {
    gap: 20px;
    margin-bottom: 36px;
  }

  .process-visual {
    min-height: 420px;
  }

  .global-band {
    padding: 32px;
  }

  .contact {
    padding: 78px 0;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 24px 0;
  }
}

@media (max-width: 560px) {
  .topbar-inner {
    gap: 10px;
  }

  .brand {
    min-width: 128px;
  }

  .brand img {
    width: 128px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .hero-lede {
    font-size: 17px;
  }

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

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .hero-proof {
    gap: 14px;
  }

  .hero-panel {
    min-height: 360px;
  }

  .signal {
    min-width: 130px;
    padding: 13px 14px;
  }

  .signal-1 {
    right: 10px;
  }

  .signal-2 {
    left: 10px;
  }

  .signal-3 {
    right: 22px;
  }

  .service-item,
  .scenario {
    padding: 28px;
  }

  .process-step {
    grid-template-columns: 48px 1fr;
    gap: 16px;
  }

  .global-band {
    padding: 26px;
  }

  .contact-card {
    padding: 26px;
  }
}