* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: auto;
}

body {
  font-family: "Segoe UI", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  background: #EEF2F6;
  color: #1F2A38;
  line-height: 1.75;
  font-size: 16px;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: #3D5A80;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(1140px, calc(100% - 36px));
  margin: 0 auto;
}

.topbar {
  background: #3D5A80;
  color: #fff;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 64px;
  padding: 10px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
}

.brand svg {
  width: 26px;
  height: 26px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  justify-content: flex-end;
}

.nav a {
  color: #d9e4f0;
  font-size: 13px;
}

.nav a:hover {
  color: #fff;
  text-decoration: none;
}

.hero {
  padding: 42px 0 28px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: center;
}

.hero-copy {
  text-align: left;
}

.hero h1 {
  font-size: 28px;
  line-height: 1.4;
  margin-bottom: 14px;
}

.hero p {
  margin-bottom: 12px;
  color: #334155;
}

.chat-mock {
  background: #fff;
  border-radius: 16px 16px 4px 4px;
  padding: 14px;
  box-shadow: 0 10px 28px rgba(31, 42, 56, 0.08);
}

.section {
  padding: 28px 0;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 20px;
  align-items: start;
}

.points {
  background: #fff;
  border-radius: 16px 16px 4px 4px;
  padding: 18px 16px;
}

.points h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.points ol {
  padding-left: 20px;
}

.points li {
  margin-bottom: 10px;
  font-size: 14px;
}

.cards h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.cards p {
  margin-bottom: 12px;
}

.icon-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 14px 0 4px;
}

.icon-card {
  background: #fff;
  border-radius: 16px 16px 4px 4px;
  padding: 16px;
}

.icon-card svg {
  width: 28px;
  height: 28px;
  margin-bottom: 8px;
}

.icon-card h3 {
  font-size: 15px;
  margin-bottom: 6px;
  color: #3D5A80;
}

.full {
  margin-top: 8px;
}

.full h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.full p {
  margin-bottom: 12px;
}

.dots {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.dot-card {
  background: #fff;
  border-radius: 16px 16px 4px 4px;
  padding: 14px 12px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #3D5A80;
  margin-bottom: 10px;
}

.dot-card h3 {
  font-size: 14px;
  margin-bottom: 6px;
}

.dot-card p {
  font-size: 13px;
  margin-bottom: 0;
}

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}

.compare article {
  background: #fff;
  border-radius: 16px 16px 4px 4px;
  padding: 16px;
}

.compare h3 {
  font-size: 16px;
  color: #3D5A80;
  margin-bottom: 8px;
}

.faq-stack .faq-item {
  background: #fff;
  border-radius: 16px 16px 4px 4px;
  padding: 16px 18px;
  margin-bottom: 10px;
}

.faq-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #1F2A38;
}

.site-footer {
  background: #dfe6ee;
  padding: 24px 0;
  text-align: center;
  margin-top: 16px;
}

.site-footer p {
  font-size: 13px;
  color: #1F2A38;
  margin-bottom: 8px;
}

@media (max-width: 900px) {
  .hero-grid,
  .layout,
  .icon-grid,
  .compare,
  .dots {
    grid-template-columns: 1fr;
  }

  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero h1 {
    font-size: 22px;
  }
}