:root {
  color-scheme: dark;
  --bg: #061014;
  --bg-2: #09171d;
  --ink: #f6fbff;
  --muted: #a7b6bf;
  --line: rgba(179, 235, 255, 0.18);
  --cyan: #20f0ff;
  --cyan-2: #53f6de;
  --green: #41ee9c;
  --amber: #ffb13b;
  --surface: rgba(8, 21, 27, 0.82);
  --surface-strong: rgba(3, 12, 17, 0.94);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  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;
  background: var(--bg);
}

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

a { color: inherit; }

img {
  display: block;
  width: 100%;
  height: auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  height: 74px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
  padding: 0 clamp(22px, 4vw, 64px);
  background: rgba(4, 12, 17, 0.55);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 22px;
  font-weight: 760;
}

.brand-mark {
  width: 36px;
  height: 36px;
  color: var(--cyan);
  display: inline-grid;
  place-items: center;
}

.brand-mark svg,
.module-icon svg {
  width: 100%;
  height: 100%;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 4vw, 58px);
  font-size: 15px;
  font-weight: 700;
}

.nav a,
.footer-links a {
  text-decoration: none;
  color: rgba(246, 251, 255, 0.86);
}

.nav a:hover,
.footer-links a:hover,
.footer-meta a:hover {
  color: var(--cyan);
}

.header-cta {
  justify-self: end;
  min-width: 132px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid rgba(32, 240, 255, 0.75);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  background: rgba(0, 20, 26, 0.36);
}

.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(2, 9, 13, 0.98) 0%, rgba(4, 15, 21, 0.86) 38%, rgba(5, 16, 23, 0.38) 66%, rgba(5, 16, 23, 0.18) 100%),
    #061014;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(32, 240, 255, 0.62), transparent);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  opacity: 0.72;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(680px, calc(100% - 44px));
  margin-left: clamp(22px, 4.5vw, 68px);
  padding-top: 72px;
}

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

h1 {
  margin-bottom: 32px;
  font-size: clamp(54px, 6.2vw, 88px);
  line-height: 0.98;
  font-weight: 780;
}

h1 span {
  display: block;
  white-space: nowrap;
}

.title-cn {
  display: flex;
  gap: 0.08em;
}

.accent-line {
  width: 54px;
  height: 2px;
  margin-bottom: 32px;
  background: var(--cyan);
}

.hero-cn {
  margin-bottom: 8px;
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 700;
}

.hero-en {
  max-width: 520px;
  margin-bottom: 36px;
  color: rgba(246, 251, 255, 0.86);
  font-size: clamp(18px, 1.7vw, 23px);
  line-height: 1.38;
}

.hero-actions,
.contact-points,
.footer-links {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 0 32px;
  border: 1px solid transparent;
  border-radius: 8px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #031316;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--cyan-2) 100%);
  box-shadow: 0 18px 42px rgba(32, 240, 255, 0.18);
}

.button-secondary {
  color: var(--ink);
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(6, 15, 20, 0.44);
}

.button-dark {
  color: var(--ink);
  background: #03090d;
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 16px 34px rgba(2, 8, 12, 0.28);
}

.capabilities {
  padding: 72px clamp(22px, 4.5vw, 68px) 78px;
  background: linear-gradient(180deg, #f8fbff 0%, #eef4f8 100%);
  color: #081218;
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(280px, 1fr);
  gap: clamp(36px, 7vw, 92px);
  align-items: end;
  margin-bottom: 34px;
}

.section-label {
  margin-bottom: 18px;
  color: #168cff;
  font-size: 16px;
  font-weight: 800;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(38px, 4.5vw, 64px);
  line-height: 1.08;
  font-weight: 820;
}

.section-intro p:last-child,
.contact-copy > p,
.process-lead {
  color: #3a4c56;
  font-size: 18px;
  line-height: 1.6;
}

.capability {
  position: relative;
  min-height: 214px;
  overflow: hidden;
  border-radius: 8px;
  background: #07141a;
  color: var(--ink);
  box-shadow: 0 20px 48px rgba(7, 18, 24, 0.16);
}

.capability img {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.capability::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5, 16, 22, 0.98) 0%, rgba(5, 16, 22, 0.88) 52%, rgba(5, 16, 22, 0.56) 100%);
}

.capability > div {
  position: relative;
  z-index: 1;
  max-width: 620px;
  padding: 46px 48px;
}

.feature-large {
  width: 61%;
  margin-left: auto;
  margin-bottom: 28px;
}

.capability-grid {
  display: grid;
  grid-template-columns: 1fr 1.32fr;
  gap: 28px;
  margin-bottom: 28px;
}

.feature-wide {
  min-height: 204px;
}

.module-icon {
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  color: var(--cyan);
}

.module-icon svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

h3 {
  margin-bottom: 4px;
  font-size: 25px;
  line-height: 1.2;
  font-weight: 800;
}

.subtitle {
  margin-bottom: 18px;
  color: rgba(246, 251, 255, 0.82);
  font-size: 17px;
  line-height: 1.35;
}

.capability p:last-child,
.timeline p:last-child {
  margin-bottom: 0;
  color: rgba(246, 251, 255, 0.76);
  font-size: 16px;
  line-height: 1.72;
}

.process {
  padding: 72px clamp(22px, 4.5vw, 68px) 82px;
  background:
    linear-gradient(180deg, rgba(5, 18, 24, 0.94), rgba(4, 12, 17, 0.98)),
    var(--bg-2);
}

.process .section-label {
  color: var(--cyan);
}

.process h2 {
  margin-bottom: 8px;
}

.process-lead {
  margin-bottom: 42px;
  color: rgba(246, 251, 255, 0.82);
}

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  margin-bottom: 34px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 42px;
  right: 0;
  top: 27px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(255, 255, 255, 0.42), var(--green), rgba(255, 255, 255, 0.42));
}

.timeline article {
  position: relative;
  padding-top: 68px;
}

.timeline span {
  position: absolute;
  left: 0;
  top: 0;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 50%;
  color: var(--cyan);
  background: #061014;
  font-size: 20px;
  font-weight: 800;
}

.timeline article:nth-child(2) span,
.timeline article:nth-child(4) span {
  color: var(--green);
}

.timeline article:nth-child(3) span {
  color: var(--amber);
}

.process-panels {
  max-width: 1020px;
  height: 128px;
  object-fit: cover;
  border-radius: 8px;
  opacity: 0.86;
  box-shadow: var(--shadow);
}

.contact {
  display: grid;
  grid-template-columns: minmax(260px, 0.88fr) minmax(360px, 1fr) minmax(210px, 0.46fr);
  gap: 32px;
  align-items: center;
  padding: 66px clamp(22px, 4.5vw, 68px);
  background: #f7fbff;
  color: #071218;
}

.contact .section-label {
  color: #168cff;
}

.contact h2 {
  margin-bottom: 18px;
}

.contact-points {
  margin: 34px 0 20px;
  color: #344d59;
  font-weight: 750;
}

.contact-points span::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 10px;
  border: 1px solid #168cff;
  border-radius: 50%;
}

.email-link {
  color: #344d59;
  font-size: 15px;
}

.email-link a {
  color: #0c6ed8;
  text-decoration: none;
  font-weight: 780;
}

.contact-form {
  padding: 22px;
  border: 1px solid rgba(8, 18, 24, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 22px 60px rgba(8, 18, 24, 0.12);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

label {
  display: block;
  margin-bottom: 14px;
}

label span {
  display: block;
  height: 0;
  overflow: hidden;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(8, 18, 24, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  color: #071218;
  font: inherit;
  font-size: 15px;
  outline: none;
}

input::placeholder,
textarea::placeholder {
  color: rgba(52, 77, 89, 0.54);
}

input {
  height: 48px;
  padding: 0 16px;
}

textarea {
  min-height: 132px;
  resize: vertical;
  padding: 14px 16px;
}

input:focus,
textarea:focus {
  border-color: #168cff;
  box-shadow: 0 0 0 3px rgba(22, 140, 255, 0.12);
}

.form-status {
  min-height: 22px;
  margin: 14px 0 0;
  color: #26414d;
  font-size: 14px;
  line-height: 1.55;
}

.form-status.is-error {
  color: #b42318;
}

.form-status.is-success {
  color: #057647;
}

.contact-image {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 22px 56px rgba(8, 18, 24, 0.16);
}

.contact-image img {
  min-height: 256px;
  object-fit: cover;
}

.footer {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(280px, auto) minmax(190px, auto);
  gap: 40px;
  align-items: start;
  padding: 44px clamp(22px, 4.5vw, 68px);
  background: #071116;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer p,
.footer-meta {
  color: rgba(246, 251, 255, 0.62);
  line-height: 1.68;
}

.footer-brand {
  margin-bottom: 18px;
}

.footer-links {
  align-items: flex-start;
  flex-direction: column;
  gap: 12px;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 16px;
}

.footer-meta a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 780;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
    gap: 18px;
  }

  .nav {
    display: none;
  }

  .hero {
    min-height: 680px;
  }

  .feature-large {
    width: 100%;
  }

  .capability-grid,
  .section-intro,
  .timeline,
  .contact,
  .footer {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    display: none;
  }

  .timeline {
    gap: 22px;
  }

  .timeline article {
    padding-top: 0;
    padding-left: 72px;
    min-height: 54px;
  }

  .footer-meta {
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .site-header {
    height: 66px;
    padding: 0 18px;
  }

  .brand {
    font-size: 19px;
  }

  .brand-mark {
    width: 31px;
    height: 31px;
  }

  .header-cta {
    min-width: 104px;
    height: 36px;
    font-size: 13px;
  }

  .hero {
    min-height: 650px;
    background:
      linear-gradient(180deg, rgba(2, 9, 13, 0.9) 0%, rgba(2, 9, 13, 0.88) 48%, rgba(2, 9, 13, 0.66) 100%),
      #061014;
  }

  .hero-media img {
    opacity: 0.48;
    object-position: 62% center;
  }

  .hero-content {
    width: calc(100% - 36px);
    margin: 0 18px;
  }

  h1 {
    font-size: clamp(42px, 13.5vw, 64px);
  }

  .title-cn {
    gap: 0;
    flex-direction: column;
  }

  h2 {
    font-size: clamp(34px, 11vw, 48px);
  }

  .hero-actions,
  .field-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .capabilities,
  .process,
  .contact,
  .footer {
    padding-left: 18px;
    padding-right: 18px;
  }

  .capability > div {
    padding: 30px 24px;
  }

  .contact-form {
    padding: 16px;
  }
}

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