/* ==========================================================================
   知识库页 专属样式 (knowledge base page)
   ========================================================================== */

/* ── 头部 Banner ── */
.knowledge-page .second-banner {
  width: 100%;
  padding-top: 23.96%;
  height: 0;
  position: relative;
  background-image: url("../../home/images/knowledge/banner_knowledge.webp");
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}

.knowledge-page .second-banner .second-banner-letter {
  position: absolute;
  inset: 0;
  width: auto;
  left: 0;
  top: 0;
  transform: none;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-left: clamp(40px, 13.02%, 250px);
  padding-top: 8.18vw;
  max-width: 65%;
  box-sizing: border-box;
}

.knowledge-page .banner-letter-big {
  font-size: clamp(26px, 3.125vw, 60px);
  font-weight: 500;
  line-height: 100%;
  /* letter-spacing: clamp(2px, 0.42vw, 8px); */
  color: #ffffff;
}

.knowledge-page .banner-letter-sm2 {
  font-size: clamp(13px, 1.15vw, 22px);
  font-weight: normal;
  line-height: 150%;
  /* letter-spacing: 1px; */
  color: #ffffff;
  margin-top: clamp(8px, 1.04vw, 20px);
}

/* ── 搜索栏 ── */
.knowledge-search-bar {
  position: absolute;
  left: 0;
  right: 0;
  top: 72.5%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.knowledge-search-wrap {
  width: clamp(300px, 50vw, 612px);
}

.knowledge-search-inner {
  display: flex;
  width: 100%;
  height: clamp(40px, 3.23vw, 62px);
  border-radius: 6px;
  overflow: hidden;
}

.knowledge-search-input {
  flex: 1;
  height: 100%;
  padding: 0 clamp(12px, 1.82vw, 35px);
  font-size: clamp(12px, 0.83vw, 16px);
  color: #333;
  border: none;
  outline: none;
  background: #fff;
  border: 1px solid #d7dce2;
}

.knowledge-search-input::placeholder {
  color: #999;
}

.knowledge-search-btn {
  border-radius: 0px 6px 6px 0px;
  width: 108px;
  height: 100%;
  background: var(--color-primary, #ffb407);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.3s ease;
}

.knowledge-search-btn:hover {
  background: #d08f10;
}

.knowledge-search-btn img {
  width: clamp(16px, 1.25vw, 24px);
  height: clamp(16px, 1.25vw, 24px);
}

/* ── 主体区域（标题 + 列表） ── */
.knowledge-body {
  background: #fff;
  padding: clamp(30px, 2.4vw, 46px) 0 clamp(60px, 6.78vw, 130px);
}

.knowledge-body .page-con-width {
  padding: 0 clamp(16px, 13.02vw, 250px);
}

/* 标题区 */
.knowledge-section-title {
  position: relative;
  text-align: center;
  margin-bottom: clamp(30px, 3.65vw, 70px);
}

.knowledge-bg-title {
  user-select: none;
  pointer-events: none;
  margin-bottom: -20px;
  font-family: DIN OT;
  font-size: clamp(50px, 6.46vw, 124px);
  font-weight: bold;
  line-height: 100%;
  letter-spacing: 0.03em;
  color: #f3f3f3;
}

.knowledge-main-title {
  margin-bottom: clamp(10px, 1.46vw, 28px);
  position: relative;
  z-index: 1;
  font-size: 40px;
  font-weight: bold;
  line-height: 100%;
  letter-spacing: 0em;
  color: #000000;
}

.knowledge-sub-title {
  font-size: clamp(12px, 1.15vw, 22px);
  font-weight: 350;
  line-height: 150%;
  text-align: center;
  color: #666666;
  letter-spacing: 1px;
}

/* ── 空状态 ── */
.knowledge-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.knowledge-empty img {
  width: clamp(180px, 18.75vw, 360px);
  height: clamp(135px, 14.06vw, 270px);
}

.knowledge-empty p {
  font-size: clamp(14px, 0.94vw, 18px);
  font-weight: 500;
  line-height: 150%;
  letter-spacing: 0.9px;
  color: #333333;
}

/* ── 文章列表 ── */
.knowledge-list {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 1.56vw, 30px);
}

.knowledge-item {
  display: flex;
  align-items: flex-start;
  gap: clamp(20px, 2.08vw, 40px);
  background: #f7f7f7;
  border-radius: 12px;
  padding: clamp(16px, 1.56vw, 30px);
  transition:
    box-shadow 0.3s ease,
    transform 0.3s ease,
    background 0.3s ease;
  cursor: pointer;
}

.knowledge-item:hover {
  box-shadow: 0px 0px 30px 0px rgba(36, 38, 39, 0.12);
  transform: translateY(-2px);
  background: #ffffff;
}

.knowledge-item:hover .knowledge-date-block {
  background: #ffb407;
  color: #ffffff;
}

.knowledge-item:hover .knowledge-attachment-tag {
  background: #f7f7f7;
  border-color: transparent;
}

/* 日期块 */
.knowledge-date-block {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: clamp(60px, 7.97vw, 153px);
  height: clamp(60px, 8.125vw, 156px);
  border-radius: 12px;
  background: #ffffff;
  gap: 4px;
}

.knowledge-date-day {
  font-size: 52px;
  font-family: DIN OT;
  font-weight: 500;
  line-height: 100%;
  letter-spacing: 0em;
  color: #333333;
}

.knowledge-date-month {
  font-size: clamp(14px, 1.04vw, 20px);
  font-family: DIN OT;
  font-weight: 500;
  line-height: 100%;
  letter-spacing: 0em;
  color: #999999;
}

/* 内容区 */
.knowledge-item-content {
  flex: 1;
  min-width: 0;
}

.knowledge-item-title {
  font-size: clamp(14px, 1.04vw, 20px);
  font-weight: 500;
  color: #333;
  line-height: 100%;
  margin-bottom: clamp(12px, 0.83vw, 16px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.knowledge-item-desc {
  font-size: clamp(12px, 0.83vw, 16px);
  color: #666;
  font-weight: normal;
  line-height: 150%;
  letter-spacing: 1px;
  margin-bottom: clamp(12px, 1.04vw, 20px);
  display: -webkit-box;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 附件列表 */
.knowledge-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(8px, 0.625vw, 12px);
}

.knowledge-attachment-tag {
  display: flex;
  align-items: center;
  gap: clamp(6px, 0.502vw, 10px);
  border-radius: 6px;
  background: #ffffff;
  border: 1px solid #d7dce2;
  font-size: clamp(10px, 0.73vw, 14px);
  padding: 10px;
  color: #999999;
  font-weight: normal;
  line-height: 150%;
  letter-spacing: 1px;
  transition: all 0.2s ease;
  text-decoration: none;
  cursor: pointer;
}

.knowledge-attachment-tag img {
  width: clamp(16px, 1.25vw, 24px);
  height: clamp(16px, 1.25vw, 24px);
}

/* ── 移动端 Banner ── */
@media (max-width: 768px) {
  .knowledge-page .second-banner {
    height: auto;
    min-height: 400px;
    padding-top: 0;
    display: flex;
    flex-direction: column;
    overflow: visible;
    background-image: url("../../home/images/vulnerability/banner_download_mobile.webp");
    background-size: cover;
    background-position: center center;
  }

  .knowledge-page .second-banner::before {
    content: "";
    display: block;
    width: 100%;
    padding-bottom: 75%;
    flex-shrink: 0;
  }

  .knowledge-page .second-banner .second-banner-letter {
    position: static;
    inset: auto;
    max-width: 100%;
    padding: 20px 16px;
  }

  .knowledge-search-bar {
    position: static;
    margin-bottom: 20px;
  }

  .knowledge-search-inner {
    width: calc(100% - 32px);
  }

  .knowledge-search-btn {
    width: 60px;
  }

  .knowledge-body .page-con-width {
    padding: 0 16px;
  }

  .knowledge-bg-title {
    font-size: 40px;
    margin-bottom: -0.4em;
  }

  .knowledge-main-title {
    font-size: 22px;
  }

  .knowledge-item {
    padding: 16px;
    gap: 14px;
  }

  .knowledge-date-block {
    width: 56px;
    height: 56px;
  }

  .knowledge-date-day {
    font-size: 24px;
  }

  .knowledge-date-month {
    font-size: 10px;
  }

  .knowledge-item-title {
    font-size: 14px;
    white-space: normal;
  }

  .knowledge-attachments {
    gap: 6px;
  }
}

@media (max-width: 1240px) {
  .knowledge-body .page-con-width {
    padding: 0 20px;
  }

  .knowledge-bg-title {
    font-size: 56px;
  }
}

/* ── Layui 分页器覆盖样式 ── */
.knowledge-pagination {
  display: flex;
  justify-content: center;
  margin-top: clamp(16px, 1.57vw, 30px);
}

.knowledge-pagination .layui-laypage {
  display: flex;
  align-items: center;
  gap: 16px;
}

.knowledge-pagination .layui-laypage a,
.knowledge-pagination .layui-laypage span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  border-radius: 4px;
  background: #f7f7f7;
  color: #999;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  padding: 0;
  margin: 0;
  border: 0;
}

/* 把箭头图直接挂在 <a> 上，span 只做尺寸占位，不设背景 */
.knowledge-pagination .layui-laypage a.layui-laypage-prev,
.knowledge-pagination .layui-laypage a.layui-laypage-next {
  background-size: 20px 20px;
  background-repeat: no-repeat;
  background-position: center;
  transition: background-color 0.2s ease, background-image 0.0s;
}

.knowledge-pagination .layui-laypage a.layui-laypage-prev {
  background-image: url("../../home/images/knowledge/left_arrow_icon.webp");
}

.knowledge-pagination .layui-laypage a.layui-laypage-next {
  background-image: url("../../home/images/knowledge/right_arrow_icon.webp");
}

.knowledge-pagination .layui-laypage a.layui-laypage-prev:hover,
.knowledge-pagination .layui-laypage a.layui-laypage-next:hover {
  background-color: #ffb407;
}

.knowledge-pagination .layui-laypage a.layui-laypage-prev:hover {
  background-image: url("../../home/images/knowledge/hover_left_arrow_icon.webp");
}

.knowledge-pagination .layui-laypage a.layui-laypage-next:hover {
  background-image: url("../../home/images/knowledge/hover_right_arrow_icon.webp");
}

.knowledge-pagination .layui-laypage a .k-page-arrow {
  display: none;
}

.knowledge-pagination .layui-laypage .layui-laypage-curr {
  background: #ffb407;
  color: #fff;
  border-radius: 4px;
}

.knowledge-pagination .layui-laypage .layui-laypage-curr em:first-child {
  display: none;
}

.knowledge-pagination .layui-laypage .layui-laypage-spr {
  border: none;
  background: transparent;
  color: #999;
  cursor: default;
}

@media (max-width: 768px) {
  .knowledge-pagination .layui-laypage a,
  .knowledge-pagination .layui-laypage span {
    min-width: 30px;
    height: 30px;
    font-size: 12px;
    padding: 0 8px;
  }
}

/* 下载码查询结果卡片 */
.download-result-card {
  background: #fff;
  border: 1.5px solid #ffb407;
  border-radius: 10px;
  padding: 24px 28px 20px;
  margin-bottom: 32px;
}
.download-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.download-result-tag {
  background: #ffb407;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
}
.download-result-expiry {
  font-size: 12px;
  color: #7a8394;
}
.download-result-title {
  font-size: 18px;
  font-weight: 600;
  color: #1a2233;
  margin-bottom: 8px;
}
.download-result-desc {
  font-size: 14px;
  color: #5a6174;
  margin-bottom: 14px;
  line-height: 1.6;
}
.download-result-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.download-result-back {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 18px;
  border: 1px solid #ffb407;
  border-radius: 20px;
  color: #ffb407;
  font-size: 13px;
  cursor: pointer;
  background: #fff;
  transition: all .2s;
}
.download-result-back:hover {
  background: #ffb407;
  color: #fff;
}
/* 搜索框错误提示 */
.knowledge-search-error {
  margin-top: 8px;
  color: #e05252;
  font-size: 18px;
}
/* 搜索框成功提示 */
.knowledge-search-success {
  margin-top: 8px;
  color: #52c41a;
  font-size: 18px;
}