* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  color: #172033;
  background: #f7f8fb;
  line-height: 1.75;
}

a {
  color: #165dff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid #e6e9f0;
  backdrop-filter: blur(10px);
}

.header-inner,
.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #172033;
  font-weight: 700;
}

.brand img {
  width: 142px;
  height: auto;
  display: block;
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
  font-size: 14px;
}

.hero {
  background: linear-gradient(135deg, #fff 0%, #eef5ff 58%, #fff3f3 100%);
  border-bottom: 1px solid #e8edf5;
}

.hero-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 72px 0 58px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 6px 10px;
  border: 1px solid #d9e6ff;
  border-radius: 999px;
  color: #165dff;
  background: #f6f9ff;
  font-size: 14px;
  font-weight: 600;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
  color: #101828;
}

h1 {
  font-size: 44px;
  letter-spacing: 0;
}

h2 {
  font-size: 30px;
  margin-bottom: 18px;
}

h3 {
  font-size: 21px;
  margin-bottom: 10px;
}

p {
  margin: 0 0 14px;
}

.lead {
  margin-top: 18px;
  font-size: 18px;
  color: #465366;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  font-weight: 700;
  border: 1px solid #165dff;
  background: #165dff;
  color: #fff;
}

.button.secondary {
  background: #fff;
  color: #165dff;
}

.fact-panel {
  background: #fff;
  border: 1px solid #e5e8ef;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 12px 32px rgba(17, 24, 39, 0.08);
}

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

.fact {
  padding: 14px;
  border-radius: 6px;
  background: #f7f9fc;
  border: 1px solid #edf0f5;
}

.fact strong {
  display: block;
  font-size: 18px;
  color: #d92d20;
}

.section {
  padding: 56px 0;
}

.section.white {
  background: #fff;
}

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

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.card {
  background: #fff;
  border: 1px solid #e6e9f0;
  border-radius: 8px;
  padding: 22px;
}

.white .card {
  background: #f8fafc;
}

.list {
  padding-left: 20px;
  margin: 0;
}

.list li {
  margin: 8px 0;
}

.answer {
  padding: 22px;
  background: #f0f6ff;
  border-left: 4px solid #165dff;
  border-radius: 6px;
}

.faq {
  display: grid;
  gap: 14px;
}

.faq details {
  background: #fff;
  border: 1px solid #e6e9f0;
  border-radius: 8px;
  padding: 16px 18px;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: #101828;
}

.meta-note {
  color: #667085;
  font-size: 14px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  background: #eef5ff;
  border: 1px solid #d8e7ff;
  color: #174ea6;
  font-size: 14px;
  font-weight: 600;
}

.source-box {
  margin-top: 24px;
  padding: 18px;
  border-radius: 8px;
  border: 1px solid #d7e4f7;
  background: #f7fbff;
}

.source-box h3 {
  margin-bottom: 8px;
}

.source-list {
  margin: 0;
  padding-left: 20px;
}

.source-list li {
  margin: 6px 0;
}

.answer-list {
  display: grid;
  gap: 16px;
}

.answer-item {
  padding: 18px;
  border: 1px solid #e6e9f0;
  border-radius: 8px;
  background: #fff;
}

.answer-item h3 {
  font-size: 18px;
}

.footer {
  padding: 32px 0;
  background: #121826;
  color: #d0d5dd;
}

.footer a {
  color: #fff;
}

@media (max-width: 820px) {
  .header-inner,
  .hero-inner {
    display: block;
  }

  .nav {
    justify-content: flex-start;
    margin: 12px 0 16px;
  }

  .hero-inner {
    padding: 44px 0;
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 25px;
  }

  .fact-panel {
    margin-top: 28px;
  }

  .grid,
  .two-col,
  .fact-grid {
    grid-template-columns: 1fr;
  }
}