* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f7f8fa;
  color: #111827;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(980px, 92%);
  margin: 0 auto;
}

.topbar {
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
}

.topbar-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.brand-text {
  font-size: 16px;
}

.hero {
  padding: 64px 0 24px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  align-items: center;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(36px, 6vw, 56px);
}

.hero p {
  margin: 0;
  color: #4b5563;
  font-size: 16px;
}

.hero-visual {
  background: linear-gradient(145deg, #eff6ff, #f0fdf4);
  border: 1px solid #dbeafe;
  border-radius: 16px;
  padding: 14px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 10px;
}

.hero-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-card img {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.hero-card span {
  font-size: 13px;
  font-weight: 600;
}

.hero-card-main {
  padding: 12px;
}

.hero-card-main strong {
  display: block;
  font-size: 14px;
}

.hero-card-main p {
  margin: 3px 0 0;
  font-size: 12px;
  color: #6b7280;
}

.download {
  padding: 8px 0 72px;
}

.download h2 {
  margin: 0 0 20px;
  font-size: 28px;
}

.dl-list {
  display: grid;
  gap: 14px;
}

.dl-item {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.dl-item-name {
  font-size: 16px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.dl-item-meta {
  margin-top: 4px;
  font-size: 13px;
  color: #6b7280;
}

.platform-icon {
  width: 18px;
  height: 18px;
  border-radius: 4px;
}

.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 10px;
  background: #111827;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

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

.footer-inner {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #4b5563;
  font-size: 14px;
}

@media (max-width: 760px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .topbar-inner,
  .dl-item,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    height: auto;
    padding: 14px 0;
  }
}