:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-soft: #eef3ff;
  --text: #151926;
  --muted: #667085;
  --line: #dbe2ef;
  --primary: #4358f6;
  --primary-dark: #2732bc;
  --accent: #0f9f8f;
  --shadow: 0 24px 70px rgba(22, 31, 61, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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: 76px;
  padding: 0 7vw;
  background: rgba(246, 248, 251, 0.88);
  border-bottom: 1px solid rgba(219, 226, 239, 0.82);
  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;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), #7c6cff);
  border-radius: 10px;
  box-shadow: 0 10px 26px rgba(67, 88, 246, 0.24);
}

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

.brand strong {
  font-size: 17px;
  letter-spacing: 0;
}

.brand em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #475467;
  font-size: 14px;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(460px, 1.08fr);
  gap: 56px;
  align-items: center;
  min-height: 650px;
  padding: 72px 7vw 64px;
}

.hero-copy {
  max-width: 610px;
}

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

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(40px, 5.4vw, 68px);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.35;
}

.hero-text,
.section-head p,
.compliance p,
.contact-card p {
  color: var(--muted);
  font-size: 17px;
}

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

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 700;
}

.primary-link {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 14px 34px rgba(67, 88, 246, 0.28);
}

.primary-link:hover {
  background: var(--primary-dark);
}

.secondary-link {
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
}

.product-visual {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  min-height: 450px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #dce4f2;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.mock-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  padding: 26px 16px;
  background: #eef2ff;
  border-right: 1px solid #dce4f2;
}

.mock-sidebar span {
  width: 42px;
  height: 10px;
  background: #c8d1f5;
  border-radius: 999px;
}

.mock-sidebar .mock-dot {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 12px;
}

.mock-main {
  padding: 24px;
}

.mock-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid #edf1f7;
}

.mock-toolbar span {
  font-size: 20px;
  font-weight: 800;
}

.mock-toolbar button {
  height: 38px;
  padding: 0 16px;
  color: #fff;
  font: inherit;
  font-weight: 700;
  background: var(--primary);
  border: 0;
  border-radius: 8px;
}

.mock-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.mock-grid article {
  min-height: 145px;
  padding: 20px;
  background: #f8faff;
  border: 1px solid #e4eaf5;
  border-radius: 12px;
}

.mock-grid small {
  display: block;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 13px;
}

.mock-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 22px;
}

.mock-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0 7vw;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.trust-strip span {
  padding: 22px 20px;
  text-align: center;
  font-weight: 700;
  background: #fff;
}

.section {
  padding: 84px 7vw;
}

.section-head {
  max-width: 720px;
  margin-bottom: 34px;
}

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

.feature-card,
.step,
.contact-card,
.compliance {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.feature-card {
  min-height: 220px;
  padding: 26px;
}

.feature-index {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
}

.feature-card p,
.step p,
.compliance-list,
.contact-grid {
  color: var(--muted);
}

.workflow-section {
  background: #fff;
}

.workflow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step {
  padding: 24px;
}

.step span {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  margin-bottom: 28px;
  color: #fff;
  font-weight: 900;
  background: var(--primary);
  border-radius: 50%;
}

.compliance {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(320px, 1fr);
  gap: 42px;
  align-items: start;
  margin: 84px 7vw;
  padding: 42px;
}

.compliance-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding-left: 20px;
}

.contact-section {
  padding-top: 0;
}

.contact-card {
  padding: 42px;
  background: #151926;
}

.contact-card h2,
.contact-card p {
  color: #fff;
}

.contact-card .eyebrow {
  color: #96a4ff;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.contact-grid span {
  padding: 16px;
  color: #d7dcec;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 30px 7vw;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
    padding: 18px 22px;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 16px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 52px 22px;
  }

  .product-visual {
    grid-template-columns: 66px minmax(0, 1fr);
  }

  .trust-strip,
  .feature-grid,
  .workflow,
  .compliance,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .trust-strip {
    margin: 0 22px;
  }

  .section {
    padding: 62px 22px;
  }

  .compliance {
    margin: 62px 22px;
    padding: 28px;
  }

  .site-footer {
    flex-direction: column;
    padding: 26px 22px;
  }
}

@media (max-width: 640px) {
  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 28px;
  }

  .product-visual {
    display: block;
    min-height: auto;
  }

  .mock-sidebar {
    display: none;
  }

  .mock-grid {
    grid-template-columns: 1fr;
  }

  .mock-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }
}