:root {
  --ink: #172033;
  --muted: #64748b;
  --line: #dce6ee;
  --soft: #f5f8fa;
  --white: #ffffff;
  --green: #12b981;
  --teal: #0f8f88;
  --navy: #102033;
  --gold: #d7ae54;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: #f7fafb;
  line-height: 1.65;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(220, 230, 238, 0.72);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 18px;
}

.brand img {
  border-radius: 13px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: #44546a;
  font-size: 14px;
  font-weight: 700;
}

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

.nav-cta {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border: 1px solid rgba(15, 143, 136, 0.22);
  border-radius: 8px;
  color: #0a605d;
  background: rgba(18, 185, 129, 0.08);
}

.hero {
  min-height: 720px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(8, 18, 32, 0.94) 0%, rgba(10, 34, 44, 0.82) 40%, rgba(255, 255, 255, 0.12) 76%),
    url("hero-dashboard.webp") center right / cover no-repeat,
    #0c1a2a;
  color: var(--white);
}

.hero-inner {
  display: block;
  padding: 96px 0 118px;
}

.hero-copy {
  max-width: 660px;
}

.hero-badge {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: #d7ffef;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.hero-badge span {
  font-size: 12px;
  font-weight: 900;
}

.hero-badge i {
  color: #c2d5d7;
  font-size: 12px;
  font-style: normal;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #a7f3d0;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(50px, 7vw, 88px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: 34px;
  line-height: 1.25;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.lead {
  max-width: 620px;
  margin-bottom: 28px;
  color: #e8f2f3;
  font-size: 21px;
}

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

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 800;
}

.primary-btn {
  color: var(--navy);
  background: #9ff4d3;
}

.secondary-btn {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(640px, 100%);
  margin-top: 42px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
}

.hero-proof span {
  display: block;
  min-height: 88px;
  padding: 18px;
  color: #d8e7e8;
  background: rgba(4, 18, 28, 0.18);
  font-size: 13px;
}

.hero-proof b {
  display: block;
  margin-bottom: 4px;
  color: var(--white);
  font-size: 15px;
}

.section {
  padding: 84px 0;
  background: var(--white);
}

.signal-band {
  position: relative;
  z-index: 2;
  margin-top: -44px;
}

.signal-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  border: 1px solid rgba(220, 230, 238, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 24px 70px rgba(16, 32, 51, 0.12);
  backdrop-filter: blur(18px);
}

.signal-inner span {
  min-height: 88px;
  display: grid;
  place-items: center;
  border-right: 1px solid rgba(220, 230, 238, 0.86);
  color: #203047;
  font-weight: 900;
}

.signal-inner span:last-child {
  border-right: 0;
}

.section.muted {
  background: linear-gradient(180deg, #f7fafb, #eef7f5);
}

.section-head {
  max-width: 680px;
  margin-bottom: 32px;
}

.section-head p,
.split p,
.contact-card p {
  color: var(--muted);
}

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

.feature-grid article {
  position: relative;
  min-height: 210px;
  padding: 26px;
  border: 1px solid rgba(220, 230, 238, 0.9);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 44px rgba(19, 35, 51, 0.06);
}

.feature-grid article::before {
  content: "";
  display: block;
  width: 34px;
  height: 4px;
  margin-bottom: 20px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
}

.feature-index {
  position: absolute;
  top: 22px;
  right: 24px;
  color: rgba(15, 143, 136, 0.18);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
}

.feature-grid p {
  color: var(--muted);
  font-size: 15px;
}

.workspace {
  padding: 72px 0 84px;
  background:
    linear-gradient(180deg, #ffffff 0%, #f4f9f8 100%);
}

.workspace-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(420px, 1.15fr);
  gap: 52px;
  align-items: center;
}

.workspace-inner p {
  color: var(--muted);
}

.workspace-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 18px;
  border: 1px solid rgba(220, 230, 238, 0.9);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(15, 143, 136, 0.1), rgba(215, 174, 84, 0.12)),
    #ffffff;
  box-shadow: 0 22px 60px rgba(16, 32, 51, 0.08);
}

.workspace-flow span {
  min-height: 118px;
  display: flex;
  align-items: end;
  padding: 16px;
  border-radius: 8px;
  color: #203047;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(220, 230, 238, 0.86);
  font-weight: 900;
}

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

.steps li {
  position: relative;
  min-height: 178px;
  padding: 58px 22px 22px;
  border: 1px solid rgba(220, 230, 238, 0.9);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 16px 40px rgba(19, 35, 51, 0.05);
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  top: 20px;
  left: 22px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, var(--teal), var(--green));
  font-weight: 900;
}

.steps strong,
.steps span {
  display: block;
}

.steps span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 15px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 56px;
}

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

.info-list p,
.contact-info p {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  margin: 0;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.info-list b,
.contact-info b {
  color: var(--ink);
}

.info-list span,
.contact-info span {
  color: var(--muted);
}

.contact {
  background:
    linear-gradient(135deg, rgba(16, 32, 51, 0.95), rgba(8, 95, 88, 0.86)),
    #102033;
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(360px, 1.15fr);
  gap: 48px;
  padding: 42px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(18px);
}

.contact-card p,
.contact-info span {
  color: #d9e8e8;
}

.contact-info b {
  color: var(--white);
}

.contact-info p {
  border-bottom-color: rgba(255, 255, 255, 0.18);
}

.site-footer {
  padding: 26px 0;
  color: #5d6f84;
  background: #0f1d2e;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  font-size: 13px;
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .hero {
    min-height: auto;
    background:
      linear-gradient(180deg, rgba(8, 18, 32, 0.9), rgba(8, 30, 39, 0.8)),
      url("hero-dashboard.webp") center / cover no-repeat,
      #0c1a2a;
  }

  .hero-inner {
    padding: 72px 0 86px;
  }

  .split,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .hero-proof {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .steps {
    grid-template-columns: 1fr 1fr;
  }

  .signal-inner,
  .workspace-inner,
  .workspace-flow {
    grid-template-columns: 1fr 1fr;
  }

  .contact-card {
    padding: 26px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .hero-inner {
    padding: 58px 0;
  }

  .lead {
    font-size: 17px;
  }

  .section {
    padding: 58px 0;
  }

  .feature-grid,
  .steps,
  .signal-inner,
  .workspace-inner,
  .workspace-flow {
    grid-template-columns: 1fr;
  }

  .info-list p,
  .contact-info p {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-inner {
    flex-direction: column;
  }
}