:root {
  --ink: #15202b;
  --muted: #5a6675;
  --line: #dce4ec;
  --band: #f5f8fb;
  --brand: #1d6f8f;
  --brand-strong: #124f6b;
  --green: #2f8f63;
  --warm: #e6ad32;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background: var(--white);
  line-height: 1.65;
}

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: 68px;
  padding: 0 5vw;
  border-bottom: 1px solid rgba(220, 228, 236, 0.86);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
}

.brand-mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, var(--brand), var(--green));
  font-size: 13px;
  letter-spacing: 0;
}

.nav {
  display: flex;
  gap: 26px;
  color: var(--muted);
  font-size: 15px;
}

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

.hero {
  position: relative;
  min-height: 620px;
  display: grid;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.84) 32%, rgba(255,255,255,0.36) 68%, rgba(255,255,255,0.08) 100%);
}

.hero-content {
  position: relative;
  width: min(720px, 90vw);
  padding-left: 5vw;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand-strong);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

.hero h1 {
  margin: 0;
  font-size: 62px;
  line-height: 1.08;
  letter-spacing: 0;
}

.lead {
  max-width: 620px;
  margin: 22px 0 30px;
  color: #344456;
  font-size: 21px;
}

.hero-actions,
.policy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button,
.policy-links a {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 8px;
  border: 1px solid var(--line);
  font-weight: 700;
}

.button.primary {
  color: var(--white);
  border-color: var(--brand);
  background: var(--brand);
}

.button.secondary,
.policy-links a {
  color: var(--brand-strong);
  background: rgba(255, 255, 255, 0.78);
}

.section {
  padding: 82px 5vw;
}

.section.muted {
  background: var(--band);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section h2,
.doc h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.22;
  letter-spacing: 0;
}

.text-grid,
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.text-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 980px;
}

.text-grid p,
.service-grid article,
.contact-list {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.text-grid p {
  margin: 0;
  padding: 24px;
  color: var(--muted);
  font-size: 18px;
}

.service-grid article {
  padding: 26px;
}

.service-grid h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.service-grid p,
.note,
.doc p {
  color: var(--muted);
}

.note {
  margin-top: 18px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 5vw;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #fbfcfe;
  font-size: 14px;
}

.doc {
  width: min(880px, 90vw);
  min-height: calc(100vh - 144px);
  margin: 0 auto;
  padding: 72px 0 90px;
}

.doc h2 {
  margin: 34px 0 8px;
  font-size: 22px;
}

.doc a {
  color: var(--brand-strong);
  font-weight: 700;
}

.contact-list {
  margin-top: 28px;
  padding: 8px 24px;
}

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

.contact-list p:last-child {
  border-bottom: 0;
}

.contact-list strong {
  color: var(--ink);
}

@media (max-width: 820px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 18px 5vw;
  }

  .nav {
    width: 100%;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 4px;
    white-space: nowrap;
  }

  .hero {
    min-height: 560px;
  }

  .hero-shade {
    background: linear-gradient(180deg, rgba(255,255,255,0.94), rgba(255,255,255,0.72));
  }

  .hero-content {
    padding: 0 5vw;
  }

  .hero h1 {
    font-size: 42px;
  }

  .lead {
    font-size: 18px;
  }

  .section {
    padding: 58px 5vw;
  }

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

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

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