:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #172033;
  --muted: #667085;
  --line: #d9e1ea;
  --blue: #1167ff;
  --teal: #00a99d;
  --orange: #ff8a35;
  --green: #19a56b;
  --graphite: #202938;
  --shadow: 0 20px 50px rgba(23, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 6vw;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(217, 225, 234, 0.8);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  line-height: 1.2;
}

.brand small {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.3;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #354052;
  font-size: 15px;
}

.site-nav a {
  padding: 8px 0;
}

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

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: 42px;
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: 54px 6vw 48px;
  background: linear-gradient(180deg, #ffffff 0%, #eef5ff 100%);
}

.hero-copy {
  position: relative;
  z-index: 1;
}

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

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

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(28px, 3.8vw, 46px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.3;
}

.hero-text {
  max-width: 620px;
  margin: 24px 0 0;
  color: #455164;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: var(--blue);
}

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

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  max-width: 620px;
  margin: 38px 0 0;
}

.hero-metrics div {
  padding: 18px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(217, 225, 234, 0.9);
  border-radius: 8px;
}

.hero-metrics dt {
  color: var(--teal);
  font-size: 30px;
  font-weight: 900;
  line-height: 1;
}

.hero-metrics dd {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.hero-media {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  min-height: 460px;
  object-fit: cover;
}

.section {
  padding: 86px 6vw;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading p:last-child {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.intro {
  display: grid;
  grid-template-columns: minmax(240px, 0.7fr) minmax(300px, 1fr);
  gap: 44px;
  align-items: start;
  background: #fff;
}

.intro > p {
  margin: 0;
  color: #3f4a5c;
  font-size: 18px;
}

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

.service-card,
.training-layout article {
  min-height: 100%;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.service-card:hover,
.training-layout article:hover {
  border-color: rgba(17, 103, 255, 0.38);
  box-shadow: 0 18px 36px rgba(23, 32, 51, 0.08);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 34px;
  margin-bottom: 18px;
  color: var(--blue);
  background: #edf4ff;
  border-radius: 8px;
  font-weight: 900;
}

.service-card p,
.training-layout p,
.process-list p {
  color: var(--muted);
}

.service-card ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  color: #344054;
  font-size: 14px;
}

.service-card li::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 9px;
  background: var(--orange);
  border-radius: 50%;
  vertical-align: 1px;
}

.split {
  display: grid;
  grid-template-columns: minmax(300px, 0.95fr) minmax(320px, 1.05fr);
  gap: 24px;
  align-items: stretch;
  background: #eef2f7;
}

.panel,
.dashboard-preview {
  border-radius: 8px;
}

.dark-panel {
  padding: 42px;
  color: #fff;
  background: var(--graphite);
}

.dark-panel .eyebrow {
  color: #72e1d8;
}

.dark-panel p {
  color: #c9d3e2;
}

.feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.feature-list span {
  padding: 8px 12px;
  color: #eaf3ff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
}

.dashboard-preview {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.dashboard-top,
.dashboard-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.dashboard-top {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.dashboard-top span,
.dashboard-row span {
  color: var(--muted);
}

.chart-bars {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  align-items: end;
  height: 210px;
  gap: 14px;
  margin: 32px 0;
  padding: 20px;
  background: #f5f8fc;
  border-radius: 8px;
}

.chart-bars span {
  min-height: 28px;
  background: linear-gradient(180deg, var(--teal), var(--blue));
  border-radius: 6px 6px 0 0;
}

.dashboard-row {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.training {
  background: #fff;
}

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

.training-layout article {
  border-top: 4px solid var(--green);
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  position: relative;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.process-list span {
  display: grid;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  place-items: center;
  color: #fff;
  background: var(--orange);
  border-radius: 8px;
  font-weight: 900;
}

.about {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(300px, 1fr);
  gap: 42px;
  background: #fff;
}

.about-content p {
  margin: 0;
  color: #3f4a5c;
  font-size: 17px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.value-grid span {
  padding: 16px 12px;
  text-align: center;
  background: #f2f6fb;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 700;
}

.contact {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(320px, 1fr);
  gap: 28px;
  align-items: center;
  color: #fff;
  background: #142033;
}

.contact .eyebrow {
  color: #72e1d8;
}

.contact-copy p:last-child {
  color: #c8d2df;
  font-size: 17px;
}

.contact-panel {
  padding: 30px;
  color: var(--ink);
  background: #fff;
  border-radius: 8px;
}

.contact-panel p {
  margin: 0 0 14px;
  color: #3f4a5c;
}

.contact-panel .button {
  margin-top: 10px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 6vw;
  color: #dce6f2;
  background: #0f1826;
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 1100px) {
  .hero,
  .intro,
  .split,
  .about,
  .contact {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .site-header {
    min-height: 66px;
    padding: 0 20px;
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: 66px;
    right: 20px;
    left: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

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

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

  .hero {
    min-height: auto;
    padding: 42px 20px 36px;
  }

  h1 {
    font-size: 42px;
  }

  .hero-text {
    font-size: 16px;
  }

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

  .hero-metrics,
  .service-grid,
  .training-layout,
  .process-list,
  .value-grid {
    grid-template-columns: 1fr;
  }

  .hero-media img {
    min-height: 280px;
  }

  .section {
    padding: 58px 20px;
  }

  .dark-panel,
  .dashboard-preview,
  .contact-panel,
  .service-card,
  .training-layout article,
  .process-list li {
    padding: 22px;
  }

  .chart-bars {
    height: 180px;
    gap: 9px;
    padding: 16px;
  }

  .site-footer {
    display: block;
    padding: 22px 20px;
  }

  .site-footer p + p {
    margin-top: 8px;
  }
}