:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #5d6673;
  --line: #dfe5ec;
  --paper: #ffffff;
  --soft: #f4f7fb;
  --red: #d71920;
  --teal: #117a8b;
  --gold: #b7791f;
  --navy: #243447;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, 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;
  gap: 24px;
  padding: 14px clamp(20px, 5vw, 72px);
  color: #fff;
  background: rgba(23, 32, 42, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 700;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  color: #fff;
  background: var(--red);
  border-radius: 8px;
  font-size: 14px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 14px;
  white-space: nowrap;
}

.nav a:hover,
.nav a:focus-visible {
  color: #fff;
}

.hero {
  position: relative;
  min-height: 72vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--navy);
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(23, 32, 42, 0.88), rgba(23, 32, 42, 0.52) 55%, rgba(23, 32, 42, 0.22)),
    linear-gradient(0deg, rgba(23, 32, 42, 0.56), rgba(23, 32, 42, 0.08));
}

.hero-content {
  position: relative;
  width: min(860px, calc(100% - 40px));
  padding: clamp(68px, 12vh, 116px) 0 clamp(54px, 9vh, 80px);
  margin-left: clamp(20px, 6vw, 88px);
  color: #fff;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(34px, 7vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 680px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(16px, 2.4vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
}

.primary-link {
  background: var(--red);
  color: #fff;
}

.secondary-link {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.42);
}

.section {
  padding: clamp(50px, 8vw, 84px) clamp(20px, 6vw, 88px);
}

.section-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.section h2 {
  margin: 0;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.2;
}

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

.feature-card,
.compliance-grid article,
.contact-note {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.feature-card,
.compliance-grid article {
  padding: 22px;
}

.feature-card h3,
.compliance-grid h3 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 18px;
}

.feature-card p,
.compliance-grid p,
.contact-section p {
  margin: 0;
  color: var(--muted);
}

.band {
  background: var(--soft);
  border-block: 1px solid var(--line);
}

.process-list {
  display: grid;
  gap: 12px;
  max-width: 920px;
}

.process-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.process-item p {
  margin: 0;
  color: var(--muted);
}

.step {
  color: var(--teal);
  font-size: 24px;
  font-weight: 800;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
  gap: 24px;
  align-items: center;
  background: var(--navy);
  color: #fff;
}

.contact-section h2 {
  margin-bottom: 12px;
}

.contact-section p {
  color: rgba(255, 255, 255, 0.82);
}

.contact-note {
  display: grid;
  gap: 8px;
  padding: 22px;
  color: var(--ink);
}

.contact-note span {
  color: var(--muted);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 20px clamp(20px, 6vw, 88px);
  color: var(--muted);
  background: #fff;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    min-height: 76vh;
  }

  .hero-content {
    margin-inline: 20px;
    width: calc(100% - 40px);
  }

  .feature-grid,
  .compliance-grid,
  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .brand {
    align-items: flex-start;
  }

  .brand span:last-child {
    overflow-wrap: anywhere;
  }

  .process-item {
    grid-template-columns: 1fr;
  }

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