/**
 * 首页「简单几步」开启能力区
 */
body.tx-cloud .tx-start {
  padding: 88px 0 72px;
  background: linear-gradient(180deg, #ffffff 0%, #f5f8ff 100%);
  position: relative;
  overflow: hidden;
}
body.tx-cloud .tx-start::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 45% 50% at 90% 10%, rgba(0, 82, 217, 0.07), transparent 55%),
    radial-gradient(ellipse 40% 40% at 0% 80%, rgba(0, 163, 255, 0.05), transparent 50%);
  pointer-events: none;
}
body.tx-cloud .tx-start > .container {
  position: relative;
  z-index: 1;
}
body.tx-cloud .tx-start-head {
  max-width: 720px;
  margin: 0 0 44px;
}
body.tx-cloud .tx-start-head .product-eyebrow {
  color: #0052d9;
  letter-spacing: 0.14em;
  font-weight: 700;
  margin-bottom: 10px;
}
body.tx-cloud .tx-start-head h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #1d2129;
  line-height: 1.22;
}
body.tx-cloud .tx-start-head > p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: #86909c;
  max-width: 580px;
}
body.tx-cloud .tx-start-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 36px;
  counter-reset: tx-start;
}
body.tx-cloud .tx-start-card {
  position: relative;
  padding: 28px 22px 26px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid rgba(0, 82, 217, 0.08);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.04);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease;
  overflow: hidden;
}
body.tx-cloud .tx-start-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, #0052d9, #00a3ff);
  opacity: 0.85;
}
body.tx-cloud .tx-start-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 44px rgba(0, 82, 217, 0.12);
}
body.tx-cloud .tx-start-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 28px;
  padding: 0 10px;
  margin-bottom: 16px;
  border-radius: 999px;
  background: rgba(0, 82, 217, 0.08);
  color: #0052d9;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
body.tx-cloud .tx-start-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: #1d2129;
  letter-spacing: -0.02em;
  line-height: 1.35;
}
body.tx-cloud .tx-start-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #86909c;
}
body.tx-cloud .tx-start-card.is-accent {
  background: linear-gradient(160deg, #0b1f4d 0%, #123a8a 55%, #0d5bd4 100%);
  border-color: transparent;
  color: #fff;
}
body.tx-cloud .tx-start-card.is-accent::before {
  background: linear-gradient(180deg, #69b1ff, #00d4ff);
}
body.tx-cloud .tx-start-card.is-accent .tx-start-num {
  background: rgba(255, 255, 255, 0.14);
  color: #e8f3ff;
}
body.tx-cloud .tx-start-card.is-accent h3 {
  color: #fff;
}
body.tx-cloud .tx-start-card.is-accent p {
  color: rgba(232, 243, 255, 0.78);
}
body.tx-cloud .tx-start-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  padding: 22px 26px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(0, 82, 217, 0.1);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.03);
}
body.tx-cloud .tx-start-foot-copy {
  flex: 1 1 280px;
  min-width: 0;
}
body.tx-cloud .tx-start-foot-copy strong {
  display: block;
  margin: 0 0 4px;
  font-size: 16px;
  color: #1d2129;
}
body.tx-cloud .tx-start-foot-copy span {
  font-size: 13px;
  color: #86909c;
  line-height: 1.55;
}
body.tx-cloud .tx-start-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  background: #0052d9;
  color: #fff !important;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}
body.tx-cloud .tx-start-cta:hover {
  background: #0041b0;
  transform: translateY(-1px);
}
body.tx-cloud .tx-start-link {
  font-size: 14px;
  font-weight: 600;
  color: #0052d9;
  text-decoration: none;
}
body.tx-cloud .tx-start-link:hover {
  text-decoration: underline;
}

@media (max-width: 1100px) {
  body.tx-cloud .tx-start-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 640px) {
  body.tx-cloud .tx-start {
    padding: 64px 0 48px;
  }
  body.tx-cloud .tx-start-grid {
    grid-template-columns: 1fr;
  }
}