:root {
  color: #505663;
  background: #f4f7fb;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.7;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  background: #f4f7fb;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: #f4f7fb;
  color: #505663;
}

.site-header {
  width: 100%;
  background: #fff;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: calc(100% - 40px);
  max-width: 1200px;
  min-height: 100px;
  margin-inline: auto;
}

.site-brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  line-height: 0;
}

.site-brand img {
  display: block;
  width: 204px;
  height: 49px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 65px;
}

.site-nav a {
  padding: 10px 0;
  border-bottom: 5px solid transparent;
  color: #333;
  font-size: 1rem;
  line-height: 1.4;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.active {
  color: #2977D2;
  border-bottom-color: #2977D2;
}

.site-nav a:focus-visible,
.site-brand:focus-visible {
  outline: 3px solid #2977D2;
  outline-offset: 4px;
}

.page-shell {
  width: 100%;
}

.content-width {
  width: calc(100% - 40px);
  max-width: 1200px;
  margin-inline: auto;
}

.hero {
  background: #2977D2;
  color: #fff;
}

.hero-content {
  padding: 48px 0 44px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 2rem;
  line-height: 1.25;
  letter-spacing: 0;
  font-weight: 700;
}

.lead {
  margin-top: 22px;
  font-size: 1rem;
  line-height: 1.8;
}

.cta.hero-cta {
  margin-top: 28px;
  border-color: #fff;
  background: #fff;
  color: #2977D2;
  box-shadow: 0 6px 16px rgba(16, 48, 96, 0.2);
  font-size: 1.05rem;
}

.cta.hero-cta:hover {
  border-color: #eaf2fb;
  background: #eaf2fb;
  color: #1e5fae;
}

.cta.hero-cta:focus-visible {
  outline-color: #fff;
}

.intro,
.steps,
.action {
  padding-block: 40px;
}

h2 {
  color: #2977D2;
  font-size: 1.5rem;
  line-height: 1.4;
  letter-spacing: 0;
}

.intro p {
  margin-top: 18px;
  font-size: 1rem;
  line-height: 1.9;
}

.steps {
  border-top: 1px solid #dbe5f2;
}

.steps ol {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: bailout-step;
}

.steps li {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: start;
  gap: 12px;
  min-height: 64px;
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid #dbe5f2;
  color: #505663;
  font-size: 1rem;
  line-height: 1.65;
  counter-increment: bailout-step;
}

.steps li::before {
  content: counter(bailout-step);
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #2977D2;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
}

.action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
  padding-bottom: 48px;
}

.action p {
  max-width: 700px;
  color: #505663;
  font-size: 1.05rem;
  line-height: 1.85;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  min-height: 48px;
  padding: 12px 24px;
  border: 2px solid #2977D2;
  border-radius: 4px;
  background: #2977D2;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.cta:hover {
  background: #1e5fae;
  border-color: #1e5fae;
}

.cta:focus-visible {
  outline: 3px solid #505663;
  outline-offset: 4px;
}

.notice {
  border-top: 1px solid #dbe5f2;
  background: #eaf2fb;
  color: #505663;
}

.notice .content-width {
  padding-block: 24px;
}

.notice p {
  font-size: 0.875rem;
  line-height: 1.8;
}

.site-footer p {
  margin: 0;
  text-align: center;
}

.copyright {
  display: grid;
  min-height: 160px;
  padding: 32px 20px;
  place-items: center;
  background: #fff;
  color: #333;
}

.copyright p,
.license p {
  font-size: 0.875rem;
  line-height: 1.6;
}

.license {
  display: grid;
  min-height: 90px;
  padding: 20px;
  place-items: center;
  background: #505663;
  color: #fff;
}

@media (max-width: 699px) {
  .site-header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding-block: 16px 8px;
  }

  .site-brand img {
    width: 145px;
    height: auto;
  }

  .site-nav {
    width: 100%;
    min-height: 44px;
    gap: 20px;
    overflow-x: auto;
  }

  .site-nav a {
    flex: 0 0 auto;
    font-size: 0.9375rem;
  }

  .copyright {
    min-height: 136px;
  }
}

@media (min-width: 700px) {
  .content-width {
    width: calc(100% - 80px);
    max-width: 1200px;
  }

  .hero-content {
    padding-block: 72px 64px;
  }

  h1 {
    font-size: 3.5rem;
  }

  .lead {
    font-size: 1.3rem;
  }

  h2 {
    font-size: 2rem;
  }

  .intro,
  .steps,
  .action {
    padding-block: 56px;
  }

  .steps ol {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .steps li {
    grid-template-columns: 1fr;
    gap: 16px;
    min-height: 180px;
    padding: 24px 20px;
    border: 1px solid #dbe5f2;
    border-radius: 4px;
    background: #fff;
  }

  .action {
    align-items: center;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cta {
    transition: none;
  }
}