/* ==================================================
   cases/douyin-shop/css/shop.css
   抖店全案代运营 - 专题页样式
   ================================================== */

/* ── 全宽图片 Section ── */
.cs-section { position: relative; width: 100%; margin: 0 auto; background: transparent; }
.cs-section__img { display: block; width: 100%; height: auto; }

/* ============== Tab 切换组件（六大核心服务） ============== */
.cs-tabs {
  max-width: 1340px;
  margin: 0 auto;
  padding: 96px 24px;
  background: #ffffff;
}
.cs-tabs__header {
  margin-bottom: 40px;
  text-align: left;
}
.cs-tabs__eyebrow {
  display: block;
  font-size: 34px;
  font-weight: 700;
  color: #ff6b35;
  line-height: 1.2;
  margin-bottom: 6px;
  letter-spacing: 1px;
}
.cs-tabs__title {
  font-size: 40px;
  font-weight: 800;
  color: #1a1a2e;
  line-height: 1.3;
  margin: 0 0 10px;
}
.cs-tabs__desc {
  font-size: 16px;
  color: #666;
  margin: 0;
}
.cs-tabs__nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin: 40px 0;
}
.cs-tabs__btn {
  position: relative;
  padding: 12px 40px;
  font-size: 18px;
  font-weight: 500;
  color: #1a1a2e;
  background: #eaf2ff;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}
.cs-tabs__btn:hover {
  background: #d4e4ff;
}
.cs-tabs__btn.is-active {
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}
.cs-tabs__btn:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 3px;
}
.cs-tabs__panels {
  position: relative;
  min-height: 200px;
}
.cs-tabs__panel {
  display: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.cs-tabs__panel.is-active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}
.cs-tabs__panel-inner {
  background: #fff;
  border-radius: 16px;
  padding: 20px;
}
.cs-tabs__panel img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

/* ============== 行业方案 Tab（按行业精准匹配） ============== */
.cs-industry {
  max-width: 1340px;
  margin: 0 auto;
  padding: 60px 24px;
  height: 970px;
  box-sizing: border-box;
  background: #ffffff;
  display: flex;
  flex-direction: column;
}
.cs-industry__header {
  height: 200px;
  box-sizing: border-box;
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.cs-industry__title {
  font-size: 42px;
  font-weight: 800;
  color: #ff6b35;
  line-height: 1.2;
  margin: 0 0 20px;
}
.cs-industry__desc {
  font-size: 21px;
  color: #333;
  margin: 0;
}
.cs-industry__nav {
  height: 50px;
  box-sizing: border-box;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  align-items: flex-start;
  align-content: flex-start;
}
.cs-industry__btn {
  position: relative;
  padding: 9px 34px;
  font-size: 24px;
  font-weight: 500;
  color: #1a1a2e;
  background: #eaf2ff;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}
.cs-industry__btn:hover { background: #d4e4ff; }
.cs-industry__btn.is-active {
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  color: #fff;
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.3);
}
.cs-industry__btn:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 3px;
}
.cs-industry__panels {
  position: relative;
  height: 600px;
  display: flex;
  align-items: center;
}
.cs-industry__panel {
  display: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  width: 100%;
}
.cs-industry__panel.is-active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}
.cs-industry__panel-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  align-items: stretch;
  height: 100%;
}
.cs-industry__case {
  background: #fff;
  border-radius: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.cs-industry__case-title {
  font-size: 22px;
  font-weight: 700;
  color: #1a1a2e;
  margin: 0 0 22px;
}
.cs-industry__case-row {
  background: linear-gradient(135deg, #ff8a5b 0%, #ff6b35 100%);
  color: #fff;
  border-radius: 14px;
  padding: 28px 30px;
  margin-bottom: 20px;
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.18);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.cs-industry__case-row:last-child { margin-bottom: 0; }
.cs-industry__case-row h4 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 10px;
  border-left: 3px solid #fff;
  padding-left: 14px;
  line-height: 1.3;
}
.cs-industry__case-row p {
  font-size: 16px;
  line-height: 1.7;
  margin: 0;
  opacity: 0.95;
  padding-left: 17px;
}
.cs-industry__stat {
  background: #f5f5f5;
  border-radius: 0;
  padding: 48px 40px;
  margin-top: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.cs-industry__stat-num {
  font-size: 104px;
  font-weight: 800;
  color: #ff6b35;
  line-height: 1;
  margin-bottom: 16px;
}
.cs-industry__stat-label {
  font-size: 20px;
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: 8px;
}
.cs-industry__stat-sub {
  font-size: 17px;
  color: #333;
}

/* ============== 响应式 ============== */
@media (max-width: 992px) {
  .cs-tabs { padding: 72px 20px; }
  .cs-tabs__eyebrow { font-size: 30px; }
  .cs-tabs__title { font-size: 34px; }
  .cs-tabs__btn { padding: 11px 32px; font-size: 16px; }

  .cs-industry { height: auto; padding: 60px 20px; }
  .cs-industry__title { font-size: 26px; }
  .cs-industry__panel-inner { grid-template-columns: 1fr; height: auto; }
  .cs-industry__case-row { flex: none; }
  .cs-industry__stat-num { font-size: 64px; }
}
@media (max-width: 600px) {
  .cs-tabs { padding: 56px 16px; }
  .cs-tabs__eyebrow { font-size: 24px; }
  .cs-tabs__title { font-size: 27px; }
  .cs-tabs__desc { font-size: 14px; }
  .cs-tabs__nav { gap: 8px; margin: 32px 0; }
  .cs-tabs__btn { padding: 8px 18px; font-size: 14px; }

  .cs-industry { padding: 48px 16px; }
  .cs-industry__title { font-size: 24px; }
  .cs-industry__desc { font-size: 13px; }
  .cs-industry__nav { gap: 10px; }
  .cs-industry__btn { padding: 8px 20px; font-size: 14px; }
  .cs-industry__stat { padding: 32px 24px; }
  .cs-industry__stat-num { font-size: 56px; }
}