:root {
  color-scheme: light;
  --ink: #101820;
  --muted: #5f6c72;
  --line: #dce4e4;
  --paper: #f7faf9;
  --white: #ffffff;
  --teal: #0b7c78;
  --cyan: #18a7ba;
  --amber: #d98a22;
  --green: #2d946b;
  --charcoal: #142125;
  --shadow: 0 18px 50px rgba(17, 29, 34, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(20px, 5vw, 72px);
  color: #f5fbfb;
  background: rgba(9, 18, 22, 0.76);
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  min-width: 0;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-logo {
  display: block;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
}

.brand-copy {
  display: grid;
  gap: 1px;
  line-height: 1.1;
}

.brand-copy strong {
  color: #ffffff;
  font-size: 16px;
}

.brand-copy span {
  color: rgba(245, 251, 251, 0.72);
  font-size: 12px;
  font-weight: 600;
}

.nav-links {
  gap: clamp(14px, 2vw, 28px);
  color: rgba(245, 251, 251, 0.82);
  font-size: 14px;
  white-space: nowrap;
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-cta {
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #ffffff;
  background: #071014;
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
}

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

.hero-shade {
  background:
    linear-gradient(90deg, rgba(5, 13, 16, 0.94) 0%, rgba(5, 13, 16, 0.78) 33%, rgba(5, 13, 16, 0.18) 72%),
    linear-gradient(0deg, rgba(5, 13, 16, 0.78), rgba(5, 13, 16, 0.06) 52%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 40px));
  margin-left: clamp(20px, 7vw, 92px);
  padding-top: 72px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(44px, 7vw, 88px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 680px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.83);
  font-size: clamp(17px, 2vw, 22px);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 800;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

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

.button.primary {
  color: #031213;
  background: linear-gradient(135deg, #36d8c5, #f2ad4b);
}

.button.secondary {
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.36);
  background: rgba(255, 255, 255, 0.08);
}

.button.light {
  background: #ffffff;
}

.signal-strip {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(1120px, calc(100% - 40px));
  margin: -44px auto 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.signal-strip div {
  padding: 24px;
  border-right: 1px solid var(--line);
}

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

.signal-strip strong,
.signal-strip span {
  display: block;
}

.signal-strip strong {
  color: var(--teal);
  font-size: clamp(22px, 3vw, 36px);
  line-height: 1.15;
}

.signal-strip span {
  margin-top: 4px;
  color: var(--muted);
  font-weight: 700;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(74px, 9vw, 116px) 0;
}

.section-heading {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: end;
  margin-bottom: 36px;
}

.section-heading.compact {
  display: block;
  max-width: 760px;
}

h2 {
  margin: 0;
  color: var(--charcoal);
  font-size: clamp(30px, 4.2vw, 54px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  color: var(--charcoal);
  font-size: 20px;
  line-height: 1.28;
}

.section-heading h2 {
  grid-column: 2;
}

.section-heading .eyebrow {
  align-self: start;
}

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

.feature-card,
.suite-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 34px rgba(20, 33, 37, 0.07);
}

.feature-card {
  padding: 28px;
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 20px;
  border-radius: 8px;
  color: #ffffff;
  background: var(--teal);
  font-weight: 800;
}

.feature-card p,
.capability-item p,
.suite-grid p,
.deployment-copy p,
.cta-band p {
  margin: 12px 0 0;
  color: var(--muted);
}

.deployment {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(32px, 6vw, 86px);
  align-items: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.deployment-copy p {
  font-size: 17px;
}

.capability-list {
  display: grid;
  gap: 14px;
}

.capability-item {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.capability-item > span {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 8px;
  color: #ffffff;
  background: var(--charcoal);
  font-weight: 800;
}

.suite-grid {
  grid-template-columns: repeat(4, 1fr);
  margin-top: 34px;
}

.suite-grid article {
  padding: 24px;
  min-height: 210px;
}

.suite-grid article:nth-child(2) {
  border-top: 4px solid var(--cyan);
}

.suite-grid article:nth-child(3) {
  border-top: 4px solid var(--green);
}

.suite-grid article:nth-child(4) {
  border-top: 4px solid var(--amber);
}

.cta-band {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto clamp(42px, 7vw, 78px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: clamp(32px, 5vw, 54px);
  color: #ffffff;
  background:
    linear-gradient(135deg, rgba(12, 124, 120, 0.95), rgba(20, 33, 37, 0.98)),
    #142125;
  border-radius: 8px;
}

.cta-band h2 {
  color: #ffffff;
}

.cta-band p {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.78);
}

@media (max-width: 900px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    min-height: 820px;
    align-items: flex-end;
    padding-bottom: 76px;
  }

  .hero-shade {
    background:
      linear-gradient(0deg, rgba(5, 13, 16, 0.96) 0%, rgba(5, 13, 16, 0.82) 43%, rgba(5, 13, 16, 0.08) 100%),
      linear-gradient(90deg, rgba(5, 13, 16, 0.86), rgba(5, 13, 16, 0.05));
  }

  .hero-content {
    margin: 0 auto;
    padding-top: 120px;
  }

  .signal-strip,
  .feature-grid,
  .suite-grid,
  .deployment,
  .section-heading {
    grid-template-columns: 1fr;
  }

  .section-heading h2 {
    grid-column: auto;
  }

  .signal-strip {
    margin-top: 20px;
  }

  .signal-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .cta-band {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 14px 18px;
  }

  .brand {
    width: 100%;
  }

  .brand-logo {
    width: 46px;
    height: 46px;
  }

  .hero {
    min-height: 760px;
  }

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

  .section,
  .cta-band,
  .signal-strip {
    width: calc(100% - 28px);
  }

  .feature-card,
  .suite-grid article,
  .capability-item {
    padding: 20px;
  }

  .capability-item {
    grid-template-columns: 44px 1fr;
    gap: 14px;
  }

  .capability-item > span {
    width: 44px;
    height: 44px;
  }
}