* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: #1f2937;
  background: #f7f9fc;
  line-height: 1.6;
}

a {
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 249, 252, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e5e7eb;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  font-size: 20px;
  font-weight: 800;
  color: #111827;
}

.header-btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 12px;
  background: #1d4ed8;
  color: #ffffff;
  font-weight: 700;
}

.hero {
  padding: 72px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 24px;
  align-items: center;
}

.eyebrow,
.section-tag {
  display: inline-block;
  margin: 0 0 12px;
  padding: 6px 12px;
  border-radius: 999px;
  background: #dbeafe;
  color: #1d4ed8;
  font-size: 14px;
  font-weight: 700;
}

.hero-copy h1 {
  margin: 0 0 16px;
  font-size: 48px;
  line-height: 1.18;
  color: #111827;
}

.hero-text {
  margin: 0 0 24px;
  font-size: 18px;
  color: #4b5563;
  max-width: 760px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.hero-notes {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  color: #6b7280;
  font-size: 14px;
}

.hero-notes span {
  padding: 6px 10px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 999px;
}

.hero-card,
.info-card,
.feature-card,
.step-card,
.cta-box {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
}

.hero-card {
  padding: 24px;
  border-radius: 24px;
}

.card-label {
  display: inline-block;
  margin-bottom: 12px;
  font-weight: 800;
  color: #1d4ed8;
}

.hero-card ul,
.feature-card ul {
  margin: 0;
  padding-left: 20px;
}

.hero-card li,
.feature-card li {
  margin-bottom: 10px;
  color: #374151;
}

.section {
  padding: 40px 0;
}

.section-soft {
  background: #eef4ff;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 24px;
}

.section-heading h2 {
  margin: 0;
  font-size: 36px;
  line-height: 1.25;
  color: #111827;
}

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.info-card,
.feature-card,
.step-card {
  padding: 24px;
  border-radius: 22px;
}

.info-card h3,
.feature-card h3,
.step-card h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 22px;
  color: #111827;
}

.info-card p,
.feature-card p,
.step-card p {
  margin: 0;
  color: #4b5563;
}

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

.step-num {
  width: 46px;
  height: 46px;
  margin-bottom: 14px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #dbeafe;
  color: #1d4ed8;
  font-weight: 800;
}

.cta-section {
  padding-bottom: 72px;
}

.cta-box {
  border-radius: 28px;
  padding: 42px 28px;
  text-align: center;
}

.cta-box h2 {
  margin: 0 0 16px;
  font-size: 40px;
  line-height: 1.2;
  color: #111827;
}

.cta-text {
  max-width: 760px;
  margin: 0 auto 24px;
  color: #4b5563;
  font-size: 18px;
}

.btn {
  display: inline-block;
  padding: 14px 20px;
  border-radius: 14px;
  font-weight: 700;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.96;
}

.btn-primary {
  background: #1d4ed8;
  color: #ffffff;
}

.btn-secondary {
  background: #ffffff;
  color: #1d4ed8;
  border: 1px solid #bfd5ff;
}

.btn-large {
  padding: 16px 26px;
  font-size: 18px;
}

.site-footer {
  border-top: 1px solid #e5e7eb;
  background: #ffffff;
}

.footer-inner {
  padding: 18px 0;
  text-align: center;
  color: #6b7280;
  font-size: 14px;
}

@media (max-width: 920px) {
  .hero-grid,
  .grid-3,
  .grid-2,
  .steps {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    font-size: 36px;
  }

  .section-heading h2,
  .cta-box h2 {
    font-size: 30px;
  }

  .hero {
    padding-top: 48px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(1120px, calc(100% - 20px));
  }

  .hero-copy h1 {
    font-size: 30px;
  }

  .hero-text,
  .cta-text {
    font-size: 16px;
  }

  .header-inner {
    padding: 12px 0;
  }
}