:root {
  color-scheme: dark;
  --ink: #eaf3ff;
  --muted: #8fa3bd;
  --line: rgba(126, 210, 255, 0.18);
  --panel: rgba(12, 24, 43, 0.72);
  --panel-strong: rgba(15, 32, 58, 0.92);
  --white: #ffffff;
  --blue: #2f74ff;
  --cyan: #39e0ff;
  --green: #58ffc7;
  --dark: #050b14;
  --paper: #07111f;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  --radius: 8px;
  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:
    radial-gradient(circle at 18% 4%, rgba(47, 116, 255, 0.26), transparent 32rem),
    radial-gradient(circle at 86% 12%, rgba(57, 224, 255, 0.18), transparent 30rem),
    linear-gradient(180deg, #07111f 0%, #050b14 45%, #08111e 100%);
  color: var(--ink);
  font-size: clamp(16px, 1.12vw, 18px);
  line-height: 1.65;
}

body::before {
  background-image:
    linear-gradient(rgba(126, 210, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 210, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  content: "";
  inset: 0;
  pointer-events: none;
  position: fixed;
  z-index: -1;
}

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

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

.site-header {
  align-items: center;
  background: rgba(5, 11, 20, 0.78);
  border-bottom: 1px solid var(--line);
  display: flex;
  height: 78px;
  justify-content: space-between;
  left: 0;
  padding: 0 clamp(20px, 5vw, 72px);
  position: fixed;
  right: 0;
  top: 0;
  transition: box-shadow 180ms ease, background 180ms ease;
  z-index: 20;
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
  background: rgba(5, 11, 20, 0.94);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.36);
}

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

.brand img {
  height: 42px;
  object-fit: contain;
  width: 148px;
}

.site-nav {
  align-items: center;
  display: flex;
  gap: 28px;
  font-size: clamp(15px, 1.02vw, 17px);
  font-weight: 760;
}

.site-nav a {
  color: rgba(234, 243, 255, 0.76);
}

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

.nav-toggle {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: none;
  height: 42px;
  padding: 8px;
  width: 42px;
}

.nav-toggle span {
  background: var(--ink);
  display: block;
  height: 2px;
  margin: 5px 0;
  width: 22px;
}

.hero {
  background: var(--dark);
  color: var(--white);
  min-height: 790px;
  overflow: hidden;
  position: relative;
}

.hero::after {
  background:
    linear-gradient(90deg, rgba(57, 224, 255, 0.14), transparent 24%),
    linear-gradient(180deg, transparent 72%, var(--dark) 100%);
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.hero-media {
  background-image:
    radial-gradient(circle at 80% 20%, rgba(57, 224, 255, 0.18), transparent 34rem),
    linear-gradient(90deg, rgba(5, 11, 20, 0.96), rgba(5, 11, 20, 0.82), rgba(5, 11, 20, 0.58)),
    url("./assets/backgroud-01.jpg");
  background-position: center;
  background-size: cover;
  filter: saturate(1.08) contrast(1.06);
  inset: 0;
  position: absolute;
}

.hero-inner {
  max-width: 980px;
  padding: 196px clamp(24px, 5vw, 72px) 118px;
  position: relative;
  z-index: 2;
}

.eyebrow {
  color: var(--cyan);
  font-size: clamp(15px, 1.08vw, 18px);
  font-weight: 880;
  letter-spacing: 0;
  line-height: 1.35;
  margin: 0 0 22px;
  text-transform: uppercase;
}

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

h1 {
  color: #f5faff;
  font-size: clamp(42px, 5.4vw, 82px);
  letter-spacing: 0.02em;
  line-height: 1.2;
  margin-bottom: 34px;
  max-width: 900px;
  text-shadow: 0 0 30px rgba(57, 224, 255, 0.12);
}

h2 {
  color: #f2f8ff;
  font-size: clamp(32px, 3.4vw, 52px);
  line-height: 1.18;
  margin-bottom: 0;
}

h3 {
  color: #f2f8ff;
  font-size: clamp(22px, 1.55vw, 27px);
  line-height: 1.32;
  margin-bottom: 12px;
}

.hero-copy {
  color: rgba(234, 243, 255, 0.78);
  font-size: clamp(19px, 1.75vw, 25px);
  line-height: 1.85;
  max-width: 880px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 42px;
}

.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  display: inline-flex;
  font-size: clamp(16px, 1.2vw, 19px);
  font-weight: 820;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
}

.button.primary {
  background: linear-gradient(135deg, var(--blue), #14c9ff);
  box-shadow: 0 0 32px rgba(47, 116, 255, 0.34);
  color: var(--white);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(234, 243, 255, 0.22);
  color: var(--white);
}

.metrics {
  background: rgba(8, 17, 30, 0.86);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: -78px clamp(20px, 5vw, 72px) 0;
  position: relative;
  z-index: 4;
  backdrop-filter: blur(18px);
}

.metrics div {
  border-right: 1px solid var(--line);
  min-height: 148px;
  padding: 28px;
}

.metrics div:last-child {
  border-right: 0;
}

.metrics strong {
  color: #f5faff;
  display: block;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.1;
  margin-bottom: 12px;
}

.metrics span {
  color: var(--muted);
  font-size: clamp(15px, 1.08vw, 17px);
}

.section {
  padding: 112px clamp(20px, 5vw, 72px);
}

.section-heading {
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(160px, 0.32fr) minmax(0, 1fr);
  margin-bottom: 48px;
}

.intro-grid {
  color: var(--muted);
  display: grid;
  font-size: clamp(18px, 1.35vw, 21px);
  gap: 34px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-left: 32%;
  max-width: 960px;
}

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

.service-grid article,
.work-card {
  background:
    linear-gradient(180deg, rgba(18, 37, 66, 0.88), rgba(8, 17, 30, 0.88));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.2);
  min-height: 300px;
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.service-grid article::before,
.work-card::before {
  background: linear-gradient(90deg, var(--cyan), transparent);
  content: "";
  height: 1px;
  left: 0;
  opacity: 0.65;
  position: absolute;
  right: 0;
  top: 0;
}

.service-index {
  color: var(--green);
  display: block;
  font-weight: 860;
  margin-bottom: 54px;
}

.service-grid p,
.work-card p,
.ai-grid p,
.steps p {
  color: var(--muted);
  font-size: clamp(16px, 1.16vw, 18px);
  margin-bottom: 0;
}

.ai-stack {
  background:
    radial-gradient(circle at 12% 18%, rgba(88, 255, 199, 0.12), transparent 24rem),
    linear-gradient(180deg, rgba(5, 11, 20, 0.64), rgba(7, 17, 31, 0.92));
  border-block: 1px solid var(--line);
}

.ai-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ai-grid article {
  background:
    linear-gradient(180deg, rgba(18, 41, 74, 0.9), rgba(7, 17, 31, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: inset 0 0 54px rgba(57, 224, 255, 0.05);
  min-height: 310px;
  padding: 30px;
  position: relative;
  overflow: hidden;
}

.ai-grid article::before {
  background: linear-gradient(90deg, var(--green), var(--cyan), transparent);
  content: "";
  height: 2px;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
}

.ai-grid span {
  color: var(--green);
  display: block;
  font-size: clamp(16px, 1.15vw, 18px);
  font-weight: 880;
  margin-bottom: 68px;
}

.feature-band {
  align-items: center;
  background:
    radial-gradient(circle at 72% 22%, rgba(57, 224, 255, 0.2), transparent 30rem),
    linear-gradient(135deg, #08111f, #0d1a2f 52%, #06101f);
  border-block: 1px solid var(--line);
  color: var(--white);
  display: grid;
  gap: 44px;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 440px);
  padding: 98px clamp(20px, 5vw, 72px);
}

.feature-copy {
  max-width: 800px;
}

.feature-copy p:last-child {
  color: rgba(234, 243, 255, 0.72);
  font-size: clamp(18px, 1.35vw, 21px);
  margin: 24px 0 0;
}

.platform-panel {
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: inset 0 0 44px rgba(57, 224, 255, 0.06);
  display: grid;
  gap: 24px;
  grid-template-columns: 88px 1fr;
  padding: 28px;
}

.platform-panel img {
  background: var(--white);
  border-radius: var(--radius);
  padding: 12px;
}

.platform-panel strong,
.platform-panel span {
  display: block;
}

.platform-panel span {
  color: rgba(234, 243, 255, 0.68);
  font-size: clamp(14px, 1.05vw, 16px);
  margin-top: 6px;
}

.work {
  background:
    linear-gradient(180deg, rgba(7, 17, 31, 0.42), rgba(5, 11, 20, 0.8)),
    var(--paper);
}

.work-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1.25fr 1fr 1fr;
}

.work-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 350px;
}

.work-card.dark {
  background:
    radial-gradient(circle at 24% 18%, rgba(57, 224, 255, 0.22), transparent 18rem),
    linear-gradient(180deg, rgba(23, 49, 88, 0.96), rgba(9, 20, 37, 0.96));
}

.work-kicker {
  color: var(--cyan);
  display: block;
  font-size: clamp(14px, 1.02vw, 16px);
  font-weight: 860;
  margin-bottom: 58px;
  text-transform: uppercase;
}

.work-card img {
  background: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius);
  margin-bottom: 54px;
  max-height: 92px;
  max-width: 240px;
  object-fit: contain;
  padding: 14px;
}

.steps {
  counter-reset: steps;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps li {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.steps span {
  color: var(--cyan);
  display: block;
  font-weight: 860;
  margin-bottom: 28px;
}

.contact {
  background: var(--dark);
  color: var(--white);
  overflow: hidden;
  position: relative;
}

.contact-bg {
  background-image:
    radial-gradient(circle at 78% 18%, rgba(57, 224, 255, 0.18), transparent 32rem),
    linear-gradient(90deg, rgba(5, 11, 20, 0.96), rgba(5, 11, 20, 0.82), rgba(5, 11, 20, 0.6)),
    url("./assets/contact-1.jpg");
  background-position: center;
  background-size: cover;
  inset: 0;
  position: absolute;
}

.contact-inner {
  display: grid;
  gap: 52px;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 470px);
  padding: 116px clamp(20px, 5vw, 72px);
  position: relative;
}

.contact-inner p:last-child {
  color: rgba(234, 243, 255, 0.72);
  font-size: clamp(18px, 1.4vw, 22px);
  max-width: 800px;
  margin-top: 24px;
}

.contact-panel {
  background: rgba(8, 17, 30, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: inset 0 0 48px rgba(57, 224, 255, 0.05);
  overflow: hidden;
  backdrop-filter: blur(14px);
}

.contact-line {
  border-bottom: 1px solid var(--line);
  display: block;
  padding: clamp(22px, 2.4vw, 34px) clamp(24px, 3vw, 36px);
}

.contact-line:last-child {
  border-bottom: 0;
}

.contact-line span,
.contact-line strong {
  display: block;
}

.contact-line span {
  color: rgba(234, 243, 255, 0.56);
  font-size: clamp(15px, 1.08vw, 17px);
  margin-bottom: 4px;
}

.contact-line strong {
  color: #f5faff;
  font-size: clamp(20px, 1.65vw, 28px);
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.site-footer {
  align-items: center;
  background: #e9eef5;
  color: #617086;
  display: flex;
  justify-content: space-between;
  padding: 28px clamp(20px, 5vw, 72px);
}

.site-footer img {
  height: 38px;
  object-fit: contain;
  width: auto;
}

.site-footer p {
  font-size: clamp(15px, 1.05vw, 17px);
  margin: 0;
}

@media (max-width: 980px) {
  .metrics,
  .service-grid,
  .ai-grid,
  .work-grid,
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metrics div:nth-child(2) {
    border-right: 0;
  }

  .metrics div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .section-heading,
  .feature-band,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .intro-grid {
    grid-template-columns: 1fr;
    margin-left: 0;
  }
}

@media (max-width: 860px) {
  .site-header {
    height: 70px;
  }

  .brand img {
    height: 38px;
    width: 136px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    background: rgba(5, 11, 20, 0.96);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 28px rgba(0, 0, 0, 0.28);
    display: none;
    gap: 0;
    left: 0;
    padding: 10px 20px 18px;
    position: absolute;
    right: 0;
    top: 70px;
  }

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

  .site-nav a {
    padding: 12px 0;
  }

  .hero {
    min-height: 720px;
  }

  .hero-inner {
    padding-top: 142px;
  }

  h1 {
    font-size: clamp(34px, 8.8vw, 54px);
    line-height: 1.24;
  }

  h2 {
    font-size: clamp(28px, 7.4vw, 42px);
  }

  .eyebrow {
    font-size: clamp(15px, 4vw, 18px);
  }

  .hero-copy {
    font-size: clamp(17px, 4.5vw, 21px);
    line-height: 1.72;
  }

  .metrics,
  .service-grid,
  .ai-grid,
  .work-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .metrics {
    margin-top: 0;
  }

  .metrics div {
    border-bottom: 1px solid var(--line);
    border-right: 0;
    min-height: 124px;
  }

  .metrics div:last-child {
    border-bottom: 0;
  }

  .section,
  .feature-band,
  .contact-inner {
    padding-bottom: 76px;
    padding-top: 76px;
  }

  .service-grid article,
  .ai-grid article,
  .work-card {
    min-height: auto;
  }

  .service-index,
  .ai-grid span,
  .work-kicker,
  .work-card img {
    margin-bottom: 36px;
  }

  .platform-panel {
    grid-template-columns: 64px 1fr;
    padding: 20px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }
}