/* ============================================================
   investor.css — 投资者关系页专属样式（深色科技风 v2.0）
   依赖：base.css、layout.css、dark-base.css（.ql-cell-card 公共签名）
   仅保留 tab 切换栏 + iframe 嵌入卡片的布局与专属字段，
   卡片容器签名（渐变/角标/阴影/hover）沿用 .ql-cell-card。
   ============================================================ */

/* ========== Tab 切换栏 ========== */
.ir-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 8px 0 30px;
}
.ir-tab {
  position: relative;
  text-align: left;
  padding: 18px 20px 16px;
  border-radius: 12px;
  cursor: pointer;
  background: linear-gradient(155deg, rgba(12, 161, 184, 0.06) 0%, rgba(10, 22, 40, 0.42) 60%, rgba(5, 13, 26, 0.5) 100%);
  border: 1px solid rgba(12, 161, 184, 0.16);
  color: rgba(255, 255, 255, 0.72);
  font-family: inherit;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
              box-shadow 0.35s var(--ease), background 0.35s var(--ease);
  overflow: hidden;
}
.ir-tab::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--lake), var(--lake-light));
  opacity: 0; transition: opacity 0.35s var(--ease);
}
.ir-tab:hover {
  transform: translateY(-3px);
  border-color: rgba(93, 194, 210, 0.4);
  box-shadow: 0 12px 30px rgba(12, 161, 184, 0.18);
}
.ir-tab.active {
  border-color: rgba(93, 194, 210, 0.55);
  background: linear-gradient(155deg, rgba(12, 161, 184, 0.18) 0%, rgba(10, 22, 40, 0.55) 60%, rgba(5, 13, 26, 0.6) 100%);
  box-shadow: 0 14px 34px rgba(12, 161, 184, 0.24), inset 0 1px 0 rgba(93, 194, 210, 0.22);
}
.ir-tab.active::before { opacity: 1; }
.ir-tab-num {
  display: block;
  font-family: var(--font-en); font-size: 11px; font-weight: 700;
  letter-spacing: 2px; color: var(--lake-light);
  text-shadow: 0 0 8px rgba(93, 194, 210, 0.3);
  margin-bottom: 8px;
}
.ir-tab-name {
  display: block;
  font-size: 16px; font-weight: 700; color: var(--white);
  letter-spacing: 0.5px; margin-bottom: 6px;
}
.ir-tab-sub {
  display: inline-block;
  font-size: 11px; font-weight: 600; letter-spacing: 1px;
  color: var(--lake-light);
  background: rgba(12, 161, 184, 0.12);
  border: 1px solid rgba(12, 161, 184, 0.24);
  padding: 2px 9px; border-radius: 10px;
}

/* ========== iframe 嵌入卡片 ========== */
.ir-frame-wrap {
  padding: 14px;
  overflow: hidden;
  --ir-h: 170px;
}
.ir-frame-body { position: relative; }
.ir-frame {
  display: block; width: 100%;
  height: var(--ir-h);
  padding: 10px;
  box-sizing: border-box;
  border: 0; border-radius: 8px;
  transition: height 0.4s var(--ease);
  overflow: hidden;
}
/* H5（≤768px）：让 iframe 卡片撑满屏宽，减少左右留空。
   默认 .section padding 20px + .ir-frame-wrap padding 14px 共占 ~68px，
   此处覆盖为本页专属窄内边距，给 Euroland IR 工具让出更多渲染宽度。
   iframe 仍 width:100% 自适应；内容超出由 iframe 自身 scrolling=yes 处理，不在卡片层横滚。 */
@media (max-width: 768px) {
  .section.investor-section { padding-left: 8px; padding-right: 8px; }
  .ir-frame-wrap { padding: 8px; }
}
/* 加载态遮罩 */
.ir-frame-loading {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  background: rgba(10, 22, 40, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 1; transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.ir-frame-wrap.is-loading .ir-frame-loading { opacity: 1; }
.ir-frame-wrap:not(.is-loading) .ir-frame-loading { opacity: 0; }
.ir-spinner {
  width: 34px; height: 34px; border-radius: 50%;
  border: 2px solid rgba(93, 194, 210, 0.2);
  border-top-color: var(--lake-light);
  animation: ir-spin 0.8s linear infinite;
  box-shadow: 0 0 18px rgba(93, 194, 210, 0.3);
}
@keyframes ir-spin { to { transform: rotate(360deg); } }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .ir-tabs { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .ir-tabs { grid-template-columns: 1fr; gap: 10px; }
  .ir-tab { padding: 14px 16px 12px; }
}