/* ==========================================================================
   洞察页独立样式（insights.html）— 参考方达 Insight/articles.html 排版
   结构：标准页头 · 搜索筛选 · 左右两列（左＝月份标题 · 右＝置顶banner + 3列卡片网格）
   （公共组件 Header/Footer/弹窗/变量在 style.css，本文件仅洞察页专属）
   ========================================================================== */

/* ---------- 页面背景（白底 + 极淡斜线） ---------- */
body.ins-page {
  background: #fff;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(30, 60, 80, .018) 0,
    rgba(30, 60, 80, .018) 1px,
    transparent 1px,
    transparent 128px
  );
}

/* ---------- 独立容器（与菜单栏同宽） ---------- */
.ins-container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- 置顶 banner（通栏 · 香槟金渐变 · 箭头几何，排右列网格最上，跨全部列） ---------- */
.ins-banner {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(30px, 3vw, 44px) clamp(30px, 3.4vw, 52px);
  background: linear-gradient(120deg, var(--gold-2) 0%, var(--gold) 55%, #C2A76C 100%);
  color: #fff;
  cursor: pointer;
  overflow: hidden;
  border: none;
  text-align: left;
  width: 100%;
  font-family: inherit;
  grid-column: 1 / -1;
  transition: transform .5s var(--ease);
}
.ins-banner:hover { transform: translateY(-4px); }
.ins-banner-deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.ins-banner-kicker {
  position: relative;
  font-size: 13px;
  letter-spacing: .3em;
  color: rgba(255, 255, 255, .85);
  margin-bottom: 18px;
}
.ins-banner-title {
  position: relative;
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .02em;
  max-width: 70%;
}
.ins-banner-date {
  position: relative;
  margin-top: 22px;
  font-size: 13px;
  letter-spacing: .16em;
  color: rgba(255, 255, 255, .8);
}
.ins-banner-arrow {
  position: absolute;
  right: clamp(30px, 4vw, 56px);
  top: 50%;
  transform: translateY(-50%);
  width: 54px;
  height: 54px;
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .4s, border-color .4s;
}
.ins-banner-arrow svg { width: 22px; height: 22px; }
.ins-banner:hover .ins-banner-arrow {
  background: rgba(255, 255, 255, .16);
  border-color: rgba(255, 255, 255, .9);
}

/* ---------- 搜索筛选栏 ---------- */
.ins-block { padding: clamp(64px, 8vw, 100px) 0 0; }
.ins-filter {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 46px;
}
.ins-search {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  max-width: 480px;
  height: 50px;
  padding: 0 18px;
  background: #fff;
  border: 1px solid #D9DEE2;
  transition: border-color .25s ease;
}
.ins-search:focus-within { border-color: var(--gold); }
.ins-search svg { width: 16px; height: 16px; color: var(--text-2); flex-shrink: 0; }
.ins-search input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: none;
  font-family: inherit;
  font-size: 14px;
  letter-spacing: .05em;
  color: var(--text);
}
.ins-search input::placeholder { color: var(--text-2); }
.ins-selects { display: flex; gap: 14px; }
.ins-selects select {
  appearance: none;
  -webkit-appearance: none;
  height: 50px;
  padding: 0 42px 0 20px;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6' fill='none' stroke='%236E685D' stroke-width='1.8'/%3E%3C/svg%3E") no-repeat right 16px center / 14px;
  border: 1px solid #D9DEE2;
  font-family: inherit;
  font-size: 14px;
  letter-spacing: .05em;
  color: var(--text);
  cursor: pointer;
  transition: border-color .25s ease;
}
.ins-selects select:hover, .ins-selects select:focus { border-color: var(--gold); outline: none; }
.ins-clear {
  display: block;
  margin: 14px 0 0 auto;
  background: none;
  border: none;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--text-2);
  cursor: pointer;
  padding: 4px 0;
  transition: color .4s;
}
.ins-clear:hover { color: var(--gold); }

/* ---------- 模块主体：左右两列（左＝日期，右＝文章列表） ---------- */
.ins-layout {
  display: grid;
  grid-template-columns: clamp(170px, 14vw, 230px) 1fr;
  gap: clamp(36px, 4vw, 64px);
  margin: clamp(40px, 4.6vw, 64px) 0 clamp(8px, 1vw, 16px);
}
.ins-date {
  border-right: 2px solid var(--line);
  padding-right: clamp(24px, 2.6vw, 40px);
}
.ins-date-title {
  font-size: clamp(24px, 2.2vw, 30px);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .04em;
  line-height: 1.35;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--ink);
  display: inline-block;
}
.ins-date-en {
  display: block;
  margin-top: 14px;
  font-family: var(--latin);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--text-2);
}

/* ---------- 右列：置顶banner通栏 + 其他文章3列卡片网格 ---------- */
.ins-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 1.8vw, 28px);
}
.ins-card {
  display: flex;
  flex-direction: column;
  padding: 33px 29px 29px;
  border: 1px solid rgba(18, 18, 18, .1);
  background: #fff;
  text-decoration: none;
  font-family: inherit;
  transition: border-color .35s, transform .45s var(--ease), box-shadow .45s var(--ease);
}
.ins-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(18, 18, 18, .07);
}
.ins-card-tag {
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--text-2);
  margin-bottom: 16px;
}
.ins-card-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.6;
  color: #4C4D51;
  letter-spacing: .01em;
  transition: color .3s;
}
.ins-card:hover .ins-card-title { color: var(--gold-2); }
.ins-card-date {
  margin-top: auto;
  padding-top: 26px;
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: .14em;
}

.ins-empty {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 15px;
  color: var(--text-2);
  letter-spacing: .1em;
  padding: 90px 0;
}

/* ---------- 分页 ---------- */
.ins-pager {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: clamp(64px, 7vw, 90px);
}
.ins-page-btn, .ins-page-num {
  min-width: 44px;
  height: 44px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 15px;
  color: var(--text-2);
  cursor: pointer;
  transition: all .25s ease;
}
.ins-page-btn:hover:not(:disabled), .ins-page-num:hover { border-color: var(--gold); color: var(--gold); }
.ins-page-btn:disabled { opacity: .3; cursor: default; }
.ins-page-num.active { color: var(--gold); border-color: var(--gold); }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .ins-layout { grid-template-columns: 150px 1fr; gap: 28px; }
  .ins-date { padding-right: 20px; }
  .ins-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .ins-container { padding: 0 22px; }
  .ins-layout { grid-template-columns: 1fr; gap: 20px; margin-top: 28px; }
  .ins-date { border-right: none; border-bottom: 2px solid var(--line); padding: 0 0 16px; }
  .ins-date-title { font-size: 22px; }
  .ins-banner { padding: 28px 24px; }
  .ins-banner-title { font-size: 20px; max-width: 88%; }
  .ins-banner-arrow { width: 44px; height: 44px; right: 20px; }
  .ins-list { grid-template-columns: 1fr; gap: 14px; }
  .ins-card { padding: 26px 22px; }
  .ins-card-title { font-size: 17px; }
  .ins-filter { flex-direction: column; align-items: stretch; gap: 14px; }
  .ins-search { max-width: none; }
  .ins-selects { width: 100%; }
  .ins-selects select { flex: 1; }
  .ins-page-btn, .ins-page-num { min-width: 38px; height: 38px; font-size: 14px; }
}