:root {
  --blue-950: #08224b;
  --blue-800: #0b4aa2;
  --blue-600: #1268d6;
  --blue-100: #eaf4ff;
  --cyan-400: #29b7e9;
  --ink: #102033;
  --muted: #5f7187;
  --line: #d9e8f8;
  --surface: #ffffff;
  --section: #f5f9fe;
  --shadow: 0 18px 50px rgba(8, 34, 75, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px) 16px 12px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(217, 232, 248, 0.85);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 700;
  color: var(--blue-950);
}

.brand-logo {
  width: 128px;
  height: 54px;
  flex: 0 0 auto;
  object-fit: contain;
}

.brand-text {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 32px);
  color: var(--muted);
  font-size: 15px;
}

.site-nav a {
  transition:
    color 160ms ease,
    transform 160ms ease;
}

.site-nav a:hover {
  color: var(--blue-600);
  transform: translateY(-1px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  min-height: calc(100vh - 74px);
  padding: clamp(52px, 8vw, 92px) clamp(20px, 5vw, 72px) clamp(42px, 6vw, 70px);
  background:
    linear-gradient(110deg, rgba(255, 255, 255, 0.98) 0%, rgba(234, 244, 255, 0.88) 52%, rgba(255, 255, 255, 0.6) 100%),
    radial-gradient(circle at 14% 22%, rgba(41, 183, 233, 0.14), transparent 34%);
}

.hero-copy {
  max-width: 690px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue-600);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  color: var(--blue-950);
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  color: var(--blue-950);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  color: var(--blue-950);
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 620px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 700;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

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

.button.primary {
  color: #fff;
  background: var(--blue-600);
  box-shadow: 0 12px 24px rgba(18, 104, 214, 0.24);
}

.button.secondary {
  color: var(--blue-800);
  background: #fff;
  border-color: var(--line);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.hero-stats div {
  padding: 16px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.hero-stats dt {
  color: var(--blue-800);
  font-size: 22px;
  font-weight: 800;
}

.hero-stats dd {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-media {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
  background: var(--blue-100);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section {
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.about-section {
  display: grid;
  grid-template-columns: minmax(250px, 0.78fr) minmax(300px, 1fr);
  gap: clamp(28px, 6vw, 90px);
  align-items: start;
}

.section-intro {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
  text-align: justify;
}

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

.feature-card,
.solution-list article {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(8, 34, 75, 0.06);
}

.feature-icon {
  display: inline-flex;
  margin-bottom: 24px;
  color: var(--cyan-400);
  font-size: 28px;
  font-weight: 800;
}

.feature-card p,
.solution-list p,
.process-list span,
.contact-section p,
.site-footer p {
  margin-bottom: 0;
  color: var(--muted);
}

.solutions-section {
  background:
    linear-gradient(180deg, #fff 0%, #f7fbff 100%);
}

.section-heading {
  max-width: 720px;
}

.solution-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.process-section {
  background: var(--blue-950);
}

.process-section .eyebrow,
.process-section h2 {
  color: #fff;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  min-height: 156px;
  padding: 24px;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
}

.process-list strong {
  display: block;
  margin-bottom: 12px;
  font-size: 20px;
}

.process-list span {
  color: rgba(255, 255, 255, 0.74);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 0.72fr);
  gap: clamp(24px, 6vw, 80px);
  align-items: center;
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 72px);
  background: #fff;
}

.contact-card {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 28px;
  background: var(--section);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-style: normal;
}

.contact-card p {
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 24px clamp(20px, 5vw, 72px);
  text-align: center;
  background: var(--blue-950);
}

.site-footer p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

@media (max-width: 1020px) {
  .hero,
  .about-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-media {
    order: -1;
    max-height: 520px;
  }

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

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
    white-space: nowrap;
  }

  .brand-logo {
    width: 112px;
    height: 48px;
  }

  .hero-stats,
  .feature-grid,
  .solution-list,
  .process-list {
    grid-template-columns: 1fr;
  }

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

  .button {
    width: 100%;
  }

  .hero-media {
    aspect-ratio: 4 / 3;
  }
}