/* banner 文字：与解决方案一致 */
.join-hero .page-hero-title {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(32px, calc(60 * var(--px)));
  font-weight: 500; /* HarmonyOS_Sans_SC_Medium */
  font-style: normal;
  text-transform: none;
  text-align: left;
  color: #ffffff;
  line-height: 1.2;
  margin: 0;
  position: relative;
  z-index: 2;
}
.join-hero .page-hero-en {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(28px, calc(50 * var(--px)));
  font-weight: 900; /* HarmonyOS_Sans_SC_Black */
  font-style: normal;
  text-transform: none;
  text-align: left;
  color: #ffffff;
  -webkit-text-stroke: calc(1 * var(--px)) #ffffff;
  text-stroke: calc(1 * var(--px)) #ffffff;
  letter-spacing: 0;
  line-height: normal;
  height: calc(45 * var(--px));
  display: flex;
  align-items: center;
  opacity: 0.3;
  position: relative;
  z-index: 1;
  margin: calc(-20 * var(--px)) 0 calc(48 * var(--px));
}
.join-hero .page-hero-desc {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(14px, calc(16 * var(--px)));
  font-weight: 400; /* HarmonyOS_Sans_SC */
  font-style: normal;
  text-transform: none;
  text-align: left;
  color: #ffffff;
  line-height: calc(30 * var(--px));
  max-width: calc(900 * var(--px));
  margin: 0;
}

.page-join {
  background: #fafafc;
}
.page-join .site-footer {
  background: #ffffff;
}

.join-main {
  background: #fafafc;
  padding: calc(80 * var(--px)) 0 calc(120 * var(--px));
}
.join-layout {
  display: grid;
  grid-template-columns: calc(300 * var(--px)) 1fr;
  gap: calc(40 * var(--px));
  align-items: start;
}
.join-sidebar {
  background: #ffffff;
  border-radius: 16px;
  padding: calc(32 * var(--px)) calc(24 * var(--px)) calc(36 * var(--px));
  border: none;
  box-shadow: 0 calc(8 * var(--px)) calc(28 * var(--px)) rgba(0, 15, 158, 0.06);
  position: sticky;
  top: calc(var(--header-h) + 24 * var(--px));
}
.join-sidebar-title {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(14px, calc(15 * var(--px)));
  font-weight: 700; /* HarmonyOS_Sans_SC_Bold */
  font-style: normal;
  text-transform: none;
  text-align: left;
  color: #000f9e;
  line-height: calc(26 * var(--px));
  margin-bottom: calc(28 * var(--px));
  display: flex;
  align-items: center;
  gap: calc(10 * var(--px));
}
.join-sidebar-title img {
  width: calc(18 * var(--px));
  height: calc(18 * var(--px));
  object-fit: contain;
  flex-shrink: 0;
  display: block;
}
.join-filter-group {
  margin-bottom: calc(28 * var(--px));
  padding-bottom: calc(28 * var(--px));
  border-bottom: 1px solid #eeeeee;
}
.join-filter-group:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.join-filter-group h4 {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(13px, calc(15 * var(--px)));
  font-weight: 400; /* HarmonyOS_Sans_SC */
  font-style: normal;
  text-transform: none;
  text-align: left;
  color: #999999;
  margin: 0 0 calc(8 * var(--px));
  line-height: calc(26 * var(--px));
}
.join-filter-group button {
  display: flex;
  align-items: center;
  width: calc(238 * var(--px));
  max-width: 100%;
  text-align: left;
  padding: 0 calc(14 * var(--px));
  height: calc(48 * var(--px));
  border-radius: calc(6 * var(--px));
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(14px, calc(16 * var(--px)));
  font-weight: 500; /* HarmonyOS_Sans_SC_Medium */
  font-style: normal;
  text-transform: none;
  color: #333333;
  line-height: calc(48 * var(--px));
  letter-spacing: 0;
  transition: background 0.2s ease, color 0.2s ease;
  box-sizing: border-box;
}
.join-filter-group button:hover {
  background: #fafafc;
  color: #000f9e;
}
.join-filter-group button.is-active {
  width: calc(238 * var(--px));
  max-width: 100%;
  height: calc(48 * var(--px));
  background: #fafafc;
  border-radius: calc(6 * var(--px));
  color: #000f9e; /* #FF000F9E */
  font-weight: 500; /* HarmonyOS_Sans_SC_Medium */
  font-size: max(14px, calc(16 * var(--px)));
  line-height: calc(48 * var(--px));
  letter-spacing: 0;
  text-align: left;
}

.join-list {
  display: flex;
  flex-direction: column;
  gap: calc(20 * var(--px));
  min-width: 0;
}
.join-card {
  background: #ffffff;
  border-radius: 16px;
  border: none;
  overflow: hidden;
  box-shadow: 0 calc(6 * var(--px)) calc(24 * var(--px)) rgba(0, 15, 158, 0.05);
  transition: box-shadow 0.25s ease;
}
.join-card.is-open,
.join-card:hover {
  box-shadow: 0 calc(10 * var(--px)) calc(32 * var(--px)) rgba(0, 15, 158, 0.1);
}
.join-card-head {
  width: 100%;
  padding: calc(28 * var(--px)) calc(36 * var(--px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(24 * var(--px));
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
}
.join-card-head h3 {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(18px, calc(24 * var(--px)));
  font-weight: 500; /* HarmonyOS_Sans_SC_Medium */
  font-style: normal;
  text-transform: none;
  text-align: left;
  color: #111111;
  margin: 0 0 calc(8 * var(--px));
  line-height: 1.35;
}
.join-card.is-open .join-card-head h3 {
  color: #000f9e;
}
.join-meta {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(13px, calc(15 * var(--px)));
  font-weight: 400; /* HarmonyOS_Sans_SC */
  font-style: normal;
  text-transform: none;
  text-align: left;
  color: #999999;
  line-height: calc(26 * var(--px));
}
.join-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: #aaaaaa;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.25s ease;
  overflow: hidden;
}
.join-toggle img {
  width: 16px;
  height: 16px;
  object-fit: contain;
  display: block;
  /* 素材白线黑底，在色底上剔除黑色 */
  mix-blend-mode: lighten;
}
.join-toggle .join-toggle-close {
  display: none;
}
.join-card.is-open .join-toggle {
  background: #000f9e;
}
.join-card.is-open .join-toggle .join-toggle-plus {
  display: none;
}
.join-card.is-open .join-toggle .join-toggle-close {
  display: block;
}
.join-card-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s ease;
  padding: 0 calc(36 * var(--px));
  border-top: none;
}
.join-card.is-open .join-card-body {
  grid-template-rows: 1fr;
}
.join-card-body-inner {
  overflow: hidden;
  min-height: 0;
  opacity: 0;
  transform: translateY(calc(-8 * var(--px)));
  transition: opacity 0.35s ease 0.05s, transform 0.4s ease;
  padding-bottom: 0;
}
.join-card.is-open .join-card-body-inner {
  opacity: 1;
  transform: translateY(0);
  padding-bottom: calc(32 * var(--px));
  transition: opacity 0.35s ease 0.08s, transform 0.4s ease, padding-bottom 0.4s ease;
}
.join-card-body h4 {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(14px, calc(16 * var(--px)));
  font-weight: 400; /* HarmonyOS_Sans_SC */
  font-style: normal;
  text-transform: none;
  text-align: left;
  color: #333333;
  line-height: calc(26 * var(--px));
  margin: calc(20 * var(--px)) 0 calc(10 * var(--px));
}
.join-card-body-inner > h4:first-child {
  margin-top: calc(4 * var(--px));
}
.join-card-body ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.join-card-body ul li {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: max(13px, calc(15 * var(--px)));
  font-weight: 400;
  color: #666666;
  line-height: calc(28 * var(--px));
  padding-left: calc(14 * var(--px));
  position: relative;
}
.join-card-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(12 * var(--px));
  width: calc(4 * var(--px));
  height: calc(4 * var(--px));
  border-radius: 50%;
  background: #000f9e;
}

@media (max-width: 900px) {
  .join-layout {
    grid-template-columns: 1fr;
  }
  .join-sidebar {
    position: static;
  }
  .join-card-head {
    padding: calc(22 * var(--px)) calc(24 * var(--px));
  }
  .join-card-body {
    padding-left: calc(24 * var(--px));
    padding-right: calc(24 * var(--px));
  }
  .join-card.is-open .join-card-body-inner {
    padding-bottom: calc(24 * var(--px));
  }
}

@media (max-width: 768px) {
  .join-hero .page-hero-title {
    font-size: 28px;
  }
  .join-hero .page-hero-en {
    height: auto;
    margin: 8px 0 20px;
    font-size: 18px;
    -webkit-text-stroke: 0;
    text-stroke: 0;
  }
  .join-hero .page-hero-desc {
    font-size: 14px;
    line-height: 1.65;
  }
  .join-layout {
    padding-top: 40px;
    padding-bottom: 48px;
    gap: 24px;
  }
  .join-card-head {
    padding: 18px 16px;
  }
  .join-card-body {
    padding-left: 16px;
    padding-right: 16px;
  }
}