/*
 * “数说 · 教发”几何构成版
 * 整体移植自 school/school/data-showcase-C.html，并使用 data-c- 前缀隔离样式。
 */

.data-c-section,
.data-c-section * {
  box-sizing: border-box;
}

.data-c-section {
  min-height: 720px;
  padding: 0;
  color: #222;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-light);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.data-c-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: transparent;
  z-index: 0;
  pointer-events: none;
}

.data-c-top-band {
  display: none;
}

.data-c-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 36px 20px 40px;
  position: relative;
  z-index: 2;
}

.data-c-geo {
  position: absolute;
  pointer-events: none;
}

.data-c-geo--square {
  top: 120px;
  right: -40px;
  width: 200px;
  height: 200px;
  border: 1.5px solid rgba(83, 52, 131, 0.12);
  transform: rotate(15deg);
}

.data-c-geo--circle {
  bottom: 200px;
  left: -60px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 1.5px solid rgba(15, 52, 96, 0.1);
}

.data-c-geo--dot {
  top: 50%;
  right: 60px;
  width: 6px;
  height: 6px;
  background: #533483;
  border-radius: 50%;
}

.data-c-title-area {
  margin-bottom: 36px;
  position: relative;
}

.data-c-title-area h2 {
  margin: 0;
  color: #1a1a2e;
  font-size: 40px;
  font-weight: 900;
  letter-spacing: 4px;
  line-height: 1.2;
}

.data-c-title-area p {
  margin: 16px 0 0;
  color: #999;
  font-size: 14px;
  line-height: normal;
  letter-spacing: 2px;
}

.data-c-title-area > div {
  width: 48px;
  height: 6px;
  margin-top: 24px;
  background: linear-gradient(90deg, #533483, #0f3460);
}

.data-c-group {
  margin-bottom: 32px;
  position: relative;
}

.data-c-group-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.data-c-group-num {
  width: 28px;
  height: 28px;
  color: #fff;
  background: #1a1a2e;
  font-size: 11px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.data-c-group-head h3 {
  margin: 0;
  color: #1a1a2e;
  font-size: 15px;
  line-height: normal;
  font-weight: 700;
  letter-spacing: 4px;
}

.data-c-group-rule {
  flex: 1;
  height: 1px;
  background: #e0e0e0;
}

.data-c-flex {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.data-c-flex--middle {
  width: 66.666%;
  margin-right: auto;
  margin-left: auto;
}

.data-c-unit {
  flex: 1;
  padding: 0 36px;
  position: relative;
}

.data-c-unit:not(:first-child)::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, transparent, #ddd, transparent);
}

.data-c-unit:first-child {
  padding-left: 0;
}

.data-c-big-num {
  color: #1a1a2e;
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -2px;
  position: relative;
  display: inline-block;
}

.data-c-big-num--lead {
  color: #533483;
}

.data-c-u {
  color: #533483;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0;
}

.data-c-big-num::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 24px;
  height: 3px;
  background: #0f3460;
}

.data-c-desc {
  margin-top: 12px;
  color: #777;
  font-size: 13px;
  line-height: 1.8;
}

.data-c-bottom-bar {
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.data-c-bottom-bar > span {
  color: #bbb;
  font-size: 11px;
  letter-spacing: 1px;
}

.data-c-bottom-bar > div {
  display: flex;
  gap: 8px;
}

.data-c-bottom-bar i {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.data-c-bottom-bar i:nth-child(1) { background: #1a1a2e; }
.data-c-bottom-bar i:nth-child(2) { background: #0f3460; }
.data-c-bottom-bar i:nth-child(3) { background: #533483; }
.data-c-bottom-bar i:nth-child(4) { background: #e94560; }

@media (max-width: 768px) {
  .data-c-section {
    min-height: auto;
  }

  .data-c-container {
    padding: 40px 20px;
  }

  .data-c-flex {
    flex-direction: column;
    gap: 40px;
  }

  .data-c-flex--middle {
    width: 100%;
  }

  .data-c-unit {
    width: 100%;
    padding: 0;
  }

  .data-c-unit:not(:first-child)::before {
    display: none;
  }

  .data-c-big-num {
    font-size: 42px;
  }

  .data-c-title-area h2 {
    font-size: 36px;
  }
}