:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --surface: #ffffff;
  --surface-cool: #eef5f8;
  --text: #162033;
  --muted: #657084;
  --line: #dce3ed;
  --accent: #1769e0;
  --accent-dark: #0f3f8f;
  --green: #0f766e;
  --green-soft: #e6f4f1;
  --shadow: 0 18px 45px rgba(22, 32, 51, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  width: 100%;
  border-bottom: 1px solid rgba(220, 227, 237, 0.78);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.site-header,
main,
.site-footer {
  padding-left: max(24px, calc((100vw - 1120px) / 2));
  padding-right: max(24px, calc((100vw - 1120px) / 2));
}

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-size: 18px;
  font-weight: 750;
}

.brand-mark {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
}

nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 30px;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

nav a,
.site-footer a,
.verify-panel a {
  transition: color 160ms ease;
}

nav a:hover,
.site-footer a:hover,
.verify-panel a:hover {
  color: var(--accent);
}

main {
  overflow: hidden;
}

.hero {
  min-height: 560px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 500px);
  align-items: center;
  gap: 68px;
  padding-top: 58px;
  padding-bottom: 62px;
  border-bottom: 1px solid var(--line);
}

.hero-copy h1 {
  margin: 0 0 24px;
  max-width: 680px;
  font-size: clamp(60px, 7vw, 88px);
  line-height: 0.98;
  font-weight: 820;
  letter-spacing: 0;
}

.hero-lead {
  margin: 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.85;
}

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

.primary-link,
.secondary-link {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 700;
}

.primary-link {
  color: #ffffff;
  background: var(--accent);
}

.secondary-link {
  color: var(--accent-dark);
  border: 1px solid var(--line);
  background: var(--surface);
}

.verify-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(238, 245, 248, 0.9), rgba(255, 255, 255, 0.96)),
    var(--surface);
  box-shadow: var(--shadow);
}

.verify-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(23, 105, 224, 0.07) 1px, transparent 1px),
    linear-gradient(0deg, rgba(23, 105, 224, 0.06) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.45;
  pointer-events: none;
}

.panel-header,
.verify-panel dl {
  position: relative;
}

.panel-header {
  min-height: 126px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 26px;
  border-bottom: 1px solid var(--line);
}

.panel-header img {
  width: 64px;
  height: 64px;
}

.panel-header span,
.verify-panel dt,
.identity-card span,
.contact-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.panel-header strong {
  display: block;
  margin-top: 5px;
  font-size: 26px;
  line-height: 1.2;
}

.verify-panel dl {
  margin: 0;
  padding: 0;
}

.verify-panel dl div {
  padding: 22px 26px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 20px;
  align-items: center;
}

.verify-panel dl div:last-child {
  border-bottom: 0;
}

.verify-panel dd {
  margin: 0;
  font-size: 18px;
  line-height: 1.55;
  font-weight: 720;
}

.section {
  padding-top: 70px;
  padding-bottom: 70px;
  border-bottom: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 18px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
  font-weight: 800;
}

.section p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.intro-section,
.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 390px);
  gap: 64px;
  align-items: start;
}

.identity-card,
.contact-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 26px;
  box-shadow: 0 14px 34px rgba(22, 32, 51, 0.06);
}

.identity-card strong,
.contact-card strong {
  display: block;
  margin-top: 8px;
  font-size: 22px;
  line-height: 1.45;
}

.identity-card p {
  margin-top: 16px;
  font-size: 15px;
}

.services-section {
  background:
    linear-gradient(180deg, var(--bg-soft), #ffffff);
  margin-left: calc(max(24px, (100vw - 1120px) / 2) * -1);
  margin-right: calc(max(24px, (100vw - 1120px) / 2) * -1);
  padding-left: max(24px, calc((100vw - 1120px) / 2));
  padding-right: max(24px, calc((100vw - 1120px) / 2));
}

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

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

.service-card {
  min-height: 240px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 26px;
}

.service-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--green);
  background: var(--green-soft);
}

.service-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card h3 {
  margin: 24px 0 12px;
  font-size: 21px;
  line-height: 1.35;
}

.service-card p {
  font-size: 15px;
}

.contact-section {
  align-items: center;
}

.contact-card {
  background: var(--surface-cool);
}

.site-footer {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--accent-dark);
  font-weight: 650;
}

@media (max-width: 900px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header {
    padding-top: 16px;
    padding-bottom: 16px;
  }

  nav {
    width: 100%;
    justify-content: flex-start;
    gap: 20px;
  }

  .hero,
  .intro-section,
  .contact-section {
    grid-template-columns: 1fr;
    gap: 34px;
  }

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

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

@media (max-width: 560px) {
  .site-header,
  main,
  .site-footer,
  .services-section {
    padding-left: 18px;
    padding-right: 18px;
  }

  nav {
    flex-wrap: wrap;
    font-size: 13px;
  }

  .brand {
    font-size: 17px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .hero-copy h1 {
    font-size: 54px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .primary-link,
  .secondary-link {
    width: 100%;
  }

  .panel-header,
  .verify-panel dl div,
  .identity-card,
  .contact-card,
  .service-card {
    padding: 20px;
  }

  .panel-header {
    min-height: 108px;
  }

  .panel-header img {
    width: 54px;
    height: 54px;
  }

  .verify-panel dd,
  .identity-card strong,
  .contact-card strong {
    font-size: 18px;
  }

  .verify-panel dl div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .section {
    padding-top: 58px;
    padding-bottom: 58px;
  }
}