:root {
  color-scheme: light;
  --bg: oklch(1 0 0);
  --ink: oklch(0.155 0.018 225);
  --muted: oklch(0.43 0.025 225);
  --surface: oklch(0.965 0.006 225);
  --surface-strong: oklch(0.925 0.015 215);
  --line: oklch(0.87 0.012 225);
  --primary: oklch(0.55 0.095 200);
  --primary-deep: oklch(0.29 0.07 206);
  --accent: oklch(0.62 0.16 38);
  --accent-dark: oklch(0.38 0.11 35);
  --white: oklch(1 0 0);
  --shadow: 0 8px 24px oklch(0.2 0.02 225 / 0.12);
  --radius: 8px;
  --max: 1180px;
  --header-h: 78px;
  font-family:
    "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", "PingFang SC",
    "Noto Sans SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  transform: translateY(-160%);
  background: var(--ink);
  color: var(--white);
  padding: 10px 14px;
  border-radius: var(--radius);
}

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

.progress {
  position: fixed;
  inset: 0 0 auto;
  height: 3px;
  z-index: 30;
  background: transparent;
}

.progress span {
  display: block;
  width: 0%;
  height: 100%;
  background: var(--accent);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 15;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 52px);
  color: var(--white);
  transition:
    background-color 220ms ease,
    color 220ms ease,
    border-color 220ms ease;
}

.site-header.is-scrolled,
.site-header.nav-active {
  background: oklch(1 0 0 / 0.94);
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  min-width: 0;
}

.brand-logo-wrap {
  position: relative;
  display: block;
  flex: 0 0 auto;
  width: clamp(156px, 18vw, 212px);
  aspect-ratio: 2113 / 393;
}

.brand-logo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: left center;
  transition: opacity 220ms ease;
}

.brand-logo-color {
  opacity: 0;
}

.site-header.is-scrolled .brand-logo-light,
.site-header.nav-active .brand-logo-light {
  opacity: 0;
}

.site-header.is-scrolled .brand-logo-color,
.site-header.nav-active .brand-logo-color {
  opacity: 1;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 34px);
  font-size: 14px;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 0;
  color: currentColor;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--accent);
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.site-nav .nav-cta {
  padding: 9px 15px;
  border: 1px solid currentColor;
  border-radius: 999px;
}

.site-nav .nav-cta::after {
  display: none;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: transparent;
  color: currentColor;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
}

.hero-picture,
.hero-media,
.hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-picture {
  display: block;
}

.hero-media {
  object-fit: cover;
  filter: saturate(0.86) contrast(1.08);
}

.hero-scrim {
  background:
    linear-gradient(90deg, oklch(0.08 0.02 225 / 0.88), oklch(0.15 0.04 210 / 0.52) 48%, oklch(0.2 0.03 210 / 0.12)),
    linear-gradient(0deg, oklch(0.06 0.015 225 / 0.78), transparent 45%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(100% - 36px, var(--max));
  margin: 0 auto;
  padding: calc(var(--header-h) + 58px) 0 112px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 380px);
  gap: clamp(32px, 8vw, 110px);
  align-items: end;
}

.brand-line,
.section-kicker {
  margin: 0 0 16px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.hero h1,
.section h2,
.network h2,
.image-copy h2,
.contact h2 {
  margin: 0;
  font-weight: 850;
  letter-spacing: 0;
  text-wrap: balance;
}

.hero h1 {
  max-width: 860px;
  font-size: clamp(2.55rem, 8vw, 5.9rem);
  line-height: 0.98;
}

.hero h1 span {
  display: block;
}

.hero-lede {
  max-width: 690px;
  margin: 28px 0 0;
  color: oklch(0.91 0.01 220);
  font-size: clamp(1rem, 1.8vw, 1.18rem);
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.phone-state {
  min-height: 22px;
  margin: 12px 0 0;
  color: oklch(0.9 0.02 210);
  font-size: 14px;
  font-weight: 800;
  text-wrap: pretty;
}

.phone-state:empty {
  min-height: 0;
  margin-top: 0;
}

.mobile-status {
  display: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease;
}

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

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

.button.secondary {
  border-color: oklch(1 0 0 / 0.68);
  color: var(--white);
  background: oklch(1 0 0 / 0.08);
}

.control-panel {
  background: oklch(1 0 0 / 0.11);
  border: 1px solid oklch(1 0 0 / 0.24);
  border-radius: var(--radius);
  padding: 22px;
  backdrop-filter: blur(12px);
}

.panel-top {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 5px oklch(0.62 0.16 38 / 0.22);
}

.panel-list {
  margin: 22px 0 0;
}

.panel-list div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid oklch(1 0 0 / 0.2);
}

.panel-list dt {
  color: oklch(0.84 0.02 210);
  font-size: 13px;
}

.panel-list dd {
  margin: 0;
  font-weight: 750;
}

.route-strip {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid oklch(1 0 0 / 0.18);
  background: oklch(0.11 0.02 225 / 0.72);
  backdrop-filter: blur(12px);
}

.route-strip span {
  min-height: 64px;
  display: grid;
  place-items: center;
  padding: 10px;
  border-right: 1px solid oklch(1 0 0 / 0.14);
  text-align: center;
  font-size: 14px;
  font-weight: 760;
}

.trust-band {
  width: min(100% - 36px, var(--max));
  margin: -42px auto 0;
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.trust-item {
  padding: clamp(20px, 3vw, 30px);
}

.trust-item + .trust-item {
  border-left: 1px solid var(--line);
}

.trust-item strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

.trust-item span,
.section-heading p,
.solution-row p,
.process-list p,
.network-copy p,
.image-copy p,
.contact p,
.service-card p,
.service-lead p,
.service-lead li {
  color: var(--muted);
}

.section {
  width: min(100% - 36px, var(--max));
  margin: 0 auto;
  padding: clamp(78px, 11vw, 138px) 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: clamp(34px, 6vw, 62px);
}

.section h2,
.network h2,
.image-copy h2,
.contact h2 {
  font-size: clamp(2rem, 4.6vw, 4.25rem);
  line-height: 1.04;
}

.section-heading p:last-child,
.network-copy p,
.image-copy p,
.contact p {
  margin: 20px 0 0;
  max-width: 70ch;
  font-size: 17px;
  text-wrap: pretty;
}

.service-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(0, 1.28fr);
  gap: 22px;
}

.service-lead,
.service-card,
.credential-card,
.brief-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.service-lead {
  padding: clamp(24px, 4vw, 40px);
  min-height: 100%;
}

.service-lead > span {
  display: inline-block;
  color: var(--accent-dark);
  font-weight: 900;
  font-size: 46px;
  line-height: 1;
}

.service-lead h3,
.service-card h3,
.solution-row h3,
.process-list h3,
.brief-box h3 {
  margin: 14px 0 10px;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  line-height: 1.2;
}

.service-lead ul,
.brief-box ul {
  margin: 24px 0 0;
  padding-left: 1.1em;
}

.service-lead li + li,
.brief-box li + li {
  margin-top: 10px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.service-card {
  min-height: 210px;
  padding: 26px;
}

.service-card::before {
  content: "";
  display: block;
  width: 38px;
  height: 4px;
  margin-bottom: 32px;
  background: var(--primary);
}

.image-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: stretch;
  background: var(--ink);
  color: var(--white);
}

.image-copy {
  padding: clamp(44px, 8vw, 98px) clamp(24px, 6vw, 78px);
  align-self: center;
}

.image-copy p {
  color: oklch(0.86 0.01 225);
}

.image-band-media {
  display: block;
  min-height: 430px;
}

.image-band-media img {
  width: 100%;
  height: 100%;
  min-height: 430px;
  object-fit: cover;
}

.solutions {
  padding-bottom: clamp(54px, 8vw, 88px);
}

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

.solution-row {
  display: grid;
  grid-template-columns: 160px minmax(220px, 0.72fr) minmax(260px, 1fr);
  gap: clamp(18px, 4vw, 52px);
  padding: clamp(24px, 4vw, 34px) 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.solution-row span {
  color: var(--accent-dark);
  font-weight: 850;
}

.solution-row h3,
.solution-row p {
  margin: 0;
}

.process {
  width: 100%;
  max-width: none;
  background: var(--surface);
  padding-left: max(18px, calc((100vw - var(--max)) / 2));
  padding-right: max(18px, calc((100vw - var(--max)) / 2));
}

.process-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(180px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.process-list li {
  background: var(--white);
  padding: clamp(22px, 3vw, 30px);
  min-height: 260px;
}

.process-list span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary-deep);
  color: var(--white);
  font-weight: 900;
}

.network {
  width: min(100% - 36px, var(--max));
  margin: 0 auto;
  padding: clamp(78px, 11vw, 138px) 0;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: clamp(32px, 8vw, 90px);
  align-items: center;
}

.network-map {
  position: relative;
  min-height: 420px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    linear-gradient(90deg, oklch(0.86 0.01 225) 1px, transparent 1px),
    linear-gradient(0deg, oklch(0.86 0.01 225) 1px, transparent 1px),
    radial-gradient(circle at 34% 52%, oklch(0.74 0.11 200 / 0.34), transparent 26%),
    var(--surface);
  background-size:
    44px 44px,
    44px 44px,
    auto,
    auto;
}

.network-map::before,
.network-map::after {
  content: "";
  position: absolute;
  inset: 50% 12% auto 18%;
  height: 2px;
  background: var(--accent);
  transform: rotate(-16deg);
  transform-origin: left;
}

.network-map::after {
  transform: rotate(22deg);
  background: var(--primary);
}

.network-map span {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
  display: inline-grid;
  place-items: center;
  min-width: 84px;
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--ink);
  font-weight: 850;
}

.network-map .hub {
  left: 50%;
  top: 50%;
  min-width: 96px;
  min-height: 96px;
  border-radius: 50%;
  background: var(--primary-deep);
  color: var(--white);
  border-color: var(--primary-deep);
  box-shadow: 0 0 0 12px oklch(0.55 0.095 200 / 0.16);
}

.credentials {
  padding-top: clamp(44px, 8vw, 88px);
}

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

.credential-card {
  min-height: 250px;
  padding: clamp(22px, 3vw, 30px);
}

.credential-card span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 900;
}

.credential-card h3 {
  margin: 42px 0 12px;
  font-size: clamp(1.16rem, 1.8vw, 1.45rem);
  line-height: 1.2;
}

.credential-card p {
  margin: 0;
  color: var(--muted);
}

.contact {
  width: 100%;
  max-width: none;
  padding-left: max(18px, calc((100vw - var(--max)) / 2));
  padding-right: max(18px, calc((100vw - var(--max)) / 2));
  background: var(--primary-deep);
  color: var(--white);
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  gap: clamp(26px, 6vw, 72px);
  align-items: start;
}

.contact p {
  color: oklch(0.88 0.015 205);
}

.contact .phone-state {
  color: oklch(0.9 0.04 85);
}

.contact-methods {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 30px;
}

.contact-methods a,
.contact-methods div {
  display: grid;
  gap: 5px;
  min-height: 82px;
  padding: 16px;
  border: 1px solid oklch(1 0 0 / 0.2);
  border-radius: var(--radius);
  background: oklch(1 0 0 / 0.07);
}

.contact-methods span {
  color: oklch(0.78 0.02 205);
  font-size: 13px;
}

.contact-methods strong {
  color: var(--white);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  word-break: break-word;
}

.brief-box {
  background: var(--white);
  color: var(--ink);
  padding: clamp(24px, 4vw, 34px);
}

.brief-box ul {
  color: var(--muted);
}

.brief-box .button {
  width: 100%;
  margin-top: 24px;
}

.copy-state {
  min-height: 24px;
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--accent-dark);
  white-space: pre-wrap;
}

.company-address {
  display: grid;
  gap: 6px;
  margin-top: clamp(30px, 5vw, 54px);
  padding-top: 24px;
  border-top: 1px solid oklch(1 0 0 / 0.16);
  color: oklch(0.84 0.016 205);
  font-style: normal;
}

.company-address strong {
  color: var(--white);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(18px, 4vw, 52px);
  background: var(--ink);
  color: var(--white);
  font-size: 14px;
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer span {
  color: oklch(0.82 0.015 225);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.footer-links a,
.footer-links span {
  color: oklch(0.84 0.018 215);
}

.reveal {
  opacity: 1;
  transform: translateY(14px);
  transition: transform 520ms ease;
}

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

@media (max-width: 980px) {
  .nav-toggle {
    display: block;
    position: relative;
    z-index: 17;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 12px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    background: var(--white);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .site-header.nav-active .site-nav {
    display: flex;
  }

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

  .site-nav .nav-cta {
    margin-top: 8px;
    text-align: center;
    border-color: var(--line);
  }

  .hero-inner,
  .service-layout,
  .image-band,
  .network,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding-bottom: 88px;
  }

  .control-panel {
    max-width: 560px;
  }

  .route-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-band {
    grid-template-columns: 1fr;
  }

  .trust-item + .trust-item {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .solution-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .credential-grid,
  .contact-methods {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .image-band-media,
  .image-band-media img {
    min-height: 330px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-h: 72px;
  }

  .site-header {
    padding: 14px 16px;
  }

  .brand-logo-wrap {
    width: clamp(132px, 46vw, 172px);
  }

  .hero h1 {
    font-size: clamp(2.25rem, 10.5vw, 3.2rem);
    line-height: 1.02;
  }

  .hero h1 span {
    white-space: nowrap;
  }

  .hero-inner {
    width: min(100% - 28px, var(--max));
    padding-bottom: 42px;
  }

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

  .mobile-status {
    display: block;
    margin: 18px 0 0;
    color: oklch(0.9 0.02 210);
    font-weight: 800;
  }

  .control-panel {
    display: none;
  }

  .service-grid,
  .process-list,
  .credential-grid,
  .contact-methods {
    grid-template-columns: 1fr;
  }

  .network-map {
    min-height: 360px;
  }

  .network-map span {
    min-width: 72px;
    font-size: 13px;
  }

  .network-map .hub {
    min-width: 84px;
    min-height: 84px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }

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