/* =============================================
   aboutCAC.css  —  关于CAC 页面专属样式
   设计稿基准：1920px
   字体大小：继承 static/reset.css .f_* 类（vw 响应式）
   颜色变量、container、section-head 等复用 index.css
   ============================================= */

/* ---------- Hero Banner ---------- */
.about-hero {
  position: relative;
  height: calc(615 / 1920 * 100vw);
  min-height: 360px;
  max-height: 615px;
  overflow: hidden;
  background: #0b9894;
}

.about-hero-bg {
  position: absolute;
  inset: 0;
  background: #0b9894;
  z-index: 0;
}

.about-hero-bg-image {
  position: absolute;
  top: 0;
  right: 0;
  width: min(calc(1411 / 1920 * 100vw), 1411px);
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.about-hero-bg::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(calc(1411 / 1920 * 100vw), 1411px);
  height: 100%;
  background: linear-gradient(270deg, rgba(11, 152, 148, 0) 0%, rgba(11, 152, 148, 1) 100%);
}

.about-hero-bg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(calc(615 / 1920 * 100vw), 615px);
  height: 100%;
  background: #0b9894;
}

.about-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.02) 0%, rgba(0, 0, 0, 0.08) 100%);
  z-index: 1;
  pointer-events: none;
}

.about-hero-inner {
  position: relative;
  z-index: 2;
  height: 100%;
}

.about-hero-title {
  position: absolute;
  left: 0;
  bottom: calc(121 / 615 * 100%);
  color: #fff;
  line-height: 1.2;
  letter-spacing: 0;
  font-style: normal;
}

.about-hero-title.f_68.fbd500 {
  width: 718px;
  height: 164px;
  font-family: "YouSheBiaoTiHei", sans-serif;
  font-style: normal;
  font-weight: 400;
  font-size: 68px;
  line-height: 120%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  color: #fff;
}

/* ---------- 装饰光晕（复用 index.css 风格） ---------- */
.about-glow {
  position: absolute;
  width: calc(698 / 1920 * 100vw);
  height: calc(698 / 1920 * 100vw);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.48;
}

.about-glow-left {
  background: radial-gradient(circle, rgba(11, 152, 148, 0.22) 0%, rgba(11, 152, 148, 0) 70%);
  left: calc(-221 / 1920 * 100vw);
  top: calc(150 / 960 * 100%);
}

.about-glow-right {
  background: radial-gradient(circle, rgba(11, 152, 148, 0.18) 0%, rgba(11, 152, 148, 0) 70%);
  right: calc(-100 / 1920 * 100vw);
  top: 30%;
}

/* ---------- 协会介绍 ---------- */
.about-intro-section {
  padding: 7.813vw 0 7.292vw;
  background: #fff;
  /* 左上角装饰光晕会略溢出容器，避免 overflow:hidden 裁掉 */
  overflow: visible;
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 784fr 699fr;
  gap: calc(118 / 1920 * 100vw);
  align-items: center;
  position: relative;
  z-index: 1;
}

/* 与首页 section-divider 同源装饰，置于协会介绍网格左上角 */
.about-intro-grid > .about-intro-grid-divider {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 0;
  width: 0;
  height: 0;
}

.about-intro-grid > .about-intro-grid-divider .section-divider-circle {
  left: 0;
  right: auto;
  top: 0;
  transform: translate(-42%, -42%);
}

.about-intro-copy,
.about-intro-visual {
  position: relative;
  z-index: 1;
}

.about-intro-copy {
  display: flex;
  flex-direction: column;
  gap: calc(68 / 1920 * 100vw);
  margin-top: 22px;
}

.about-intro-desc {
  display: flex;
  flex-direction: column;
  gap: calc(24 / 1920 * 100vw);
  color: var(--color-text-soft);
  line-height: 1.5;
}

.about-intro-desc p {
  margin: 0;
}

.about-intro-tags {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: calc(121 / 1920 * 100vw);
  width: min(calc(753 / 1920 * 100vw), 753px);
  max-width: 100%;
}

.about-intro-tag {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: calc(16 / 1920 * 100vw);
}

.about-intro-tag-title {
  color: var(--color-primary);
  font-size: min(calc(48 / 1920 * 100vw), 48px);
  line-height: 0.97;
}

.about-intro-tag-desc {
  color: #98cbcc;
  font-size: min(calc(20 / 1920 * 100vw), 20px);
  line-height: 1.5;
  max-width: 345px;
}

.about-intro-visual {
  border-radius: min(calc(100 / 1920 * 100vw), 100px);
  overflow: hidden;
}

.about-intro-img-wrap {
  width: 100%;
  aspect-ratio: 699 / 845;
  background: linear-gradient(135deg, #f3f6f8 0%, #dbe6ec 100%);
  border-radius: min(calc(100 / 1920 * 100vw), 100px);
  overflow: hidden;
}

.about-intro-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.about-intro-tag:last-child .about-intro-tag-desc {
  max-width: 314px;
}


/* ---------- CAC主要职能 ---------- */
.about-function-section {
  padding-top: 7.813vw;
  background:
    radial-gradient(circle at 80% 60%, rgba(11, 152, 148, 0.07) 0%, transparent 40%),
    linear-gradient(180deg, #f4fbfb 0%, #fff 100%);
}

.about-function-section.index-depth-item.is-depth-visible > .container {
  width: 100%;
}

/* 仅本模块标题行居中，不影响全站 .section-head */
.about-function-section .section-head {
  justify-content: center;
  align-items: center;
}

.about-function-section .section-head .section-title {
  flex: 0 1 auto;
  text-align: center;
}

.about-function-sub {
  color: var(--color-text-soft);
  margin-top: 1.25vw;
  line-height: 1.6;
  text-align: center;
}

.about-function-gallery {
  margin-top: 3.646vw;
  display: flex;
  align-items: stretch;
  height: calc(486 / 1920 * 100vw);
  min-height: 240px;
  overflow: hidden;
  --function-expanded-grow: 3.463;
}

.about-function-panel {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  background: #c5e4e3;
  border: 2px solid #fff;
  cursor: pointer;
  transition:
    flex-grow 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.35s ease,
    transform 0.35s ease;
}

.about-function-panel img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-function-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 38%, rgba(11, 152, 148, 0.58) 100%);
  transition: background 0.35s ease;
}

.about-function-panel-content {
  position: absolute;
  left: min(calc(30 / 1920 * 100vw), 30px);
  right: min(calc(30 / 1920 * 100vw), 30px);
  bottom: min(calc(36 / 1920 * 100vw), 36px);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: min(calc(10 / 1920 * 100vw), 10px);
  color: #fff;
}

.about-function-panel-num,
.about-function-panel-title,
.about-function-panel-desc {
  color: #fff;
}

.about-function-panel-num {
  line-height: 1;
}

.about-function-panel-title {
  line-height: 1.5;
  max-width: 12em;
}

.about-function-panel-desc {
  width: 100%;
  line-height: 1.5;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(18px);
  transition:
    max-height 0.5s ease,
    opacity 0.35s ease,
    transform 0.5s ease;
}

/* 默认仅中间卡展开；指针在卡片上时仅当前卡展开，其余（含中间）均为窄条 */
.about-function-gallery:not(:has(.about-function-panel:hover)):not(:has(.about-function-panel:focus-visible))
  .about-function-panel.is-featured {
  flex-grow: var(--function-expanded-grow);
}

.about-function-panel:hover {
  flex-grow: var(--function-expanded-grow);
}

.about-function-gallery:has(.about-function-panel:hover) .about-function-panel:not(:hover) {
  flex-grow: 1;
}

.about-function-gallery:has(.about-function-panel:focus-visible):not(:has(.about-function-panel:hover))
  .about-function-panel:focus-visible {
  flex-grow: var(--function-expanded-grow);
}

.about-function-gallery:has(.about-function-panel:focus-visible):not(:has(.about-function-panel:hover))
  .about-function-panel:not(:focus-visible) {
  flex-grow: 1;
}

.about-function-panel:hover,
.about-function-panel:focus-visible,
.about-function-gallery:not(:has(.about-function-panel:hover)):not(:has(.about-function-panel:focus-visible))
  .about-function-panel.is-featured {
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.about-function-panel:hover img,
.about-function-panel:focus-visible img,
.about-function-gallery:not(:has(.about-function-panel:hover)):not(:has(.about-function-panel:focus-visible))
  .about-function-panel.is-featured img {
  transform: scale(1.05);
}

.about-function-panel:hover::before,
.about-function-panel:focus-visible::before,
.about-function-gallery:not(:has(.about-function-panel:hover)):not(:has(.about-function-panel:focus-visible))
  .about-function-panel.is-featured::before {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 28%, rgba(11, 152, 148, 0.68) 100%);
}

.about-function-panel:hover .about-function-panel-desc,
.about-function-panel:focus-visible .about-function-panel-desc,
.about-function-gallery:not(:has(.about-function-panel:hover)):not(:has(.about-function-panel:focus-visible))
  .about-function-panel.is-featured .about-function-panel-desc {
  max-height: 12em;
  opacity: 1;
  transform: translateY(0);
}

.about-function-panel:focus-visible {
  outline: none;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.22),
    0 0 0 3px rgba(11, 152, 148, 0.35);
}

/* ---------- CAC主要目标 ---------- */
.about-goal-section {
  padding: 7.813vw 0 7.292vw;
  background: #fff;
  overflow: hidden;
}

.about-goal-section .container {
  position: relative;
  z-index: 1;
}

.about-goal-grid {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-top: 3.125vw;
}

.about-goal-sep {
  width: 1px;
  background: rgba(11, 152, 148, 0.2);
  flex-shrink: 0;
  align-self: stretch;
  margin: 3.125vw 0 0;
}

.about-goal-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-right: 2.604vw;
}

.about-goal-item + .about-goal-sep + .about-goal-item {
  padding-left: 2.604vw;
  padding-right: 2.604vw;
}

.about-goal-item:last-of-type {
  padding-right: 0;
}

.about-goal-num {
  color: #0B9894;
  font-family: "Noto Sans SC";
  font-size: 100px;
  font-style: normal;
  font-weight: 400;
  line-height: 150%; /* 150px */
}

.about-goal-divider {
  width: 2.083vw;
  height: 2px;
  background: var(--color-primary);
  margin-bottom: 1.25vw;
  border-radius: 2px;
}

.about-goal-content {
  display: flex;
  flex-direction: column;
  gap: 2.633vw;
}

.about-goal-head {
  display: flex;
  align-items: center;
  gap: 0.781vw;
  margin-top: 2.2vw;
}

.about-goal-head h3 {
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.about-goal-content p {
  color: var(--color-text-soft);
  line-height: 1.7;
}

/* ---------- 使命愿景价值观 ---------- */
.about-mission-section {
  padding: 5.729vw 0 6.25vw;
  background: #fff;
  overflow: hidden;
}

.about-mission-carousel {
  position: relative;
}

.about-mission-stage {
  position: relative;
  /* 拉满视口，便于侧卡按 50vw 与网页左右缘对齐 */
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  height: calc(611 / 1920 * 100vw);
  min-height: 420px;
  --mission-gap: 120px;
  --mission-w-active: min(calc(1172 / 1920 * 100vw), 1172px);
  --mission-w-side: min(calc(735 / 1920 * 100vw), 735px);
}

.about-mission-card-item {
  position: absolute;
  top: 50%;
  overflow: hidden;
  cursor: pointer;
  transition:
    left 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    right 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    height 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.35s ease,
    box-shadow 0.35s ease,
    border-radius 0.35s ease;
  will-change: transform, left, right, width, height;
}

.about-mission-card-item.is-left,
.about-mission-card-item.is-right {
  width: var(--mission-w-side);
  height: min(calc(348 / 1920 * 100vw), 348px);
  border-radius: 1.042vw;
  transform: translateY(-50%);
  opacity: 1;
}

/* 侧卡：外缘贴视口两侧，内缘与中间卡间距 120px（可溢出裁切，仅中间卡完整露出） */
.about-mission-card-item.is-left {
  left: calc(
    50vw - var(--mission-w-active) / 2 - var(--mission-gap) - var(--mission-w-side)
  );
  right: auto;
}

.about-mission-card-item.is-right {
  /* 与 is-left 对称，统一用 left 便于与中间态过渡动画 */
  left: calc(50vw + var(--mission-w-active) / 2 + var(--mission-gap));
  right: auto;
}

.about-mission-card-item.is-active {
  left: 50%;
  right: auto;
  width: var(--mission-w-active);
  height: min(calc(611 / 1920 * 100vw), 611px);
  border-radius: 2.083vw;
  transform: translate(-50%, -50%) scale(1);
  z-index: 3;
  box-shadow: 0 24px 64px rgba(11, 152, 148, 0.16);
}

.about-mission-card-item.is-left,
.about-mission-card-item.is-right {
  z-index: 1;
}

.about-mission-card-media,
.about-mission-card-media img {
  width: 100%;
  height: 100%;
}

.about-mission-card-media {
  position: relative;
  background: linear-gradient(135deg, #d2e7e6 0%, #b5d8d6 100%);
}

.about-mission-card-media img {
  display: block;
  object-fit: cover;
}

.about-mission-card-dim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.28);
}

.about-mission-card-overlay {
  position: absolute;
  left: 1.563vw;
  bottom: 1.354vw;
  z-index: 2;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.about-mission-card-overlay h3 {
  color: #fff;
  line-height: 1.2;
}

.about-mission-card-main {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(103 / 1920 * 100vw) calc(81 / 1920 * 100vw);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.about-mission-main-copy {
  width: min(calc(405 / 1920 * 100vw), 405px);
  color: #fff;
}

.about-mission-label {
  color: #fff;
  margin-bottom: 1.25vw;
  line-height: 1.3;
}

.about-mission-main-copy p {
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.7;
}

.about-mission-main-panel {
  width: min(calc(510 / 1920 * 100vw), 510px);
  min-height: min(calc(406 / 1920 * 100vw), 406px);
  padding: calc(50 / 1920 * 100vw) calc(53 / 1920 * 100vw) calc(50 / 1920 * 100vw) calc(52 / 1920 * 100vw);
  border-radius: 2.083vw;
  background: rgba(232, 243, 241, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.about-mission-main-panel p {
  color: var(--color-text-soft);
  line-height: 1.7;
}

.about-mission-main-panel strong {
  color: var(--color-primary);
  font-weight: 500;
}

.about-mission-card-item.is-active .about-mission-card-main {
  opacity: 1;
  pointer-events: auto;
}

.about-mission-card-item.is-active .about-mission-card-overlay {
  opacity: 0;
}

.about-mission-card-item:focus-visible {
  outline: 2px solid rgba(11, 152, 148, 0.9);
  outline-offset: 4px;
}

/* 轮播按钮 */
.about-mission-btn {
  position: absolute;
  top: 50%;
  z-index: 10;
  width: min(calc(80 / 1920 * 100vw), 80px);
  min-width: 48px;
  height: min(calc(80 / 1920 * 100vw), 80px);
  min-height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(11, 152, 148, 0.25);
  background: #fff;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background var(--transition),
    color var(--transition),
    transform 0.2s ease,
    box-shadow 0.3s ease;
}

.about-mission-btn:hover {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 16px 28px rgba(11, 152, 148, 0.22);
}

.about-mission-btn:active {
  transform: translate(-50%, -50%) scale(0.95);
}

.about-mission-btn--prev {
  left: calc(50vw - var(--mission-w-active) / 2 - 48px);
  right: auto;
  transform: translate(-50%, -50%);
}

.about-mission-btn--next {
  left: calc(50vw + var(--mission-w-active) / 2 + 48px);
  right: auto;
  transform: translate(-50%, -50%);
}

/* 轮播圆点 */
.about-mission-dots {
  display: flex;
  justify-content: center;
  gap: 0.521vw;
  padding: 1.667vw 0 0;
}

.about-mission-dot {
  width: 0.417vw;
  min-width: 6px;
  height: 0.417vw;
  min-height: 6px;
  border-radius: 50%;
  border: none;
  background: rgba(11, 152, 148, 0.3);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  padding: 0;
}

.about-mission-dot.is-active {
  background: var(--color-primary);
  transform: scale(1.4);
}

/* ---------- 执行委员会寄语 ---------- */
.about-message-section {
  position: relative;
  padding: 7.813vw 0 7.292vw;
  background: #fff;
  /* 角上 section-divider 光晕需露出 */
  overflow: visible;
}

.about-message-divider {
  position: absolute;
  width: 0;
  height: 0;
  overflow: visible;
  pointer-events: none;
  z-index: 1;
}

.about-message-divider--tl {
  left: 0;
  top: 0;
}

.about-message-divider--tl .section-divider-circle {
  left: 0;
  right: auto;
  top: 0;
  bottom: auto;
  transform: translate(-42%, -62%) scale(0.52);
  transform-origin: center center;
}

.about-message-divider--br {
  right: 0;
  bottom: 0;
}

.about-message-divider--br .section-divider-circle {
  left: auto;
  right: 0;
  top: auto;
  bottom: 0;
  transform: translate(42%, 62%) scale(0.52);
  transform-origin: center center;
}

.about-message-bg {
  position: absolute;
  z-index: 0;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  width: min(calc(744 / 1920 * 100vw), 744px);
  height: min(calc(1009 / 1920 * 100vw), 1009px);
  max-height: min(96vh, 100%);
  pointer-events: none;
}

.about-message-bg img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: right center;
  display: block;
}

.about-message-section > .container {
  position: relative;
  z-index: 2;
}

.about-message-grid {
  display: grid;
  grid-template-columns: auto minmax(0, min(calc(952 / 1920 * 100vw), 952px));
  justify-content: space-between;
  gap: calc(347 / 1920 * 100vw);
  align-items: start;
  position: relative;
  z-index: 2;
}

.about-message-head .section-head {
  margin-bottom: 0;
}

.about-message-head .section-title {
  flex: 0 1 auto;
}

.about-message-copy {
  display: flex;
  flex-direction: column;
  gap: calc(30 / 1920 * 100vw);
  color: #000;
}

.about-message-text {
  margin: 0;
  color: #000;
  line-height: 1.5;
}

.f_20.about-message-text.about-message-text--lead {
  color: #000;
}

.about-message-text--lead {
  color: rgba(105, 105, 105, 0.6);
}

.about-message-text-strong {
  color: #111;
}

.about-message-char {
  color: rgba(105, 105, 105, 0.6);
}

.about-message-char.is-ink {
  color: #000;
}

.about-message-tw-cursor {
  display: none;
  width: 2px;
  height: 1em;
  margin-left: 2px;
  vertical-align: -0.12em;
  background: var(--color-primary);
  animation: about-message-tw-blink 1s steps(1, end) infinite;
}

@keyframes about-message-tw-blink {
  0%,
  50% {
    opacity: 1;
  }

  50.01%,
  100% {
    opacity: 0;
  }
}

/* ---------- 执行委员会成员 ---------- */
.about-committee-section {
  padding: 7.813vw 0 8.333vw;
  background:
    radial-gradient(circle at 20% 60%, rgba(11, 152, 148, 0.06) 0%, transparent 40%),
    linear-gradient(180deg, #f4fbfb 0%, #fff 100%);
}

/* 执行委员会与页脚之间：装饰光晕水平居中并略下移 */
.about-committee-footer-divider {
  margin-top: min(3.65vw, 56px);
}

.about-committee-footer-divider .section-divider-circle {
  left: 50%;
  right: auto;
  top: 50%;
  transform: translate(-50%, calc(-50% + min(2.6vw, 36px)));
}

.about-committee-sub {
  color: rgba(105, 105, 105, 0.60);
  margin-top: 1.25vw;
  margin-bottom: 3.125vw;
  line-height: 1.6;
}

.about-committee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: calc(52 / 1920 * 100vw);
  row-gap: 3.125vw;
}

.about-member-card {
  border-radius: var(--card-radius);
  overflow: hidden;
  background: linear-gradient(135deg, #c5e4e3 0%, #a8d8d7 100%);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-member-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 48px rgba(11, 152, 148, 0.2);
}

.about-member-photo {
  position: relative;
  width: 100%;
  aspect-ratio: 361 / 425;
  overflow: hidden;
  cursor: pointer;
}

.about-member-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  display: block;
}

.about-member-card:hover .about-member-photo img {
  transform: scale(1.06);
}

.about-member-photo:focus-visible {
  outline: 2px solid rgba(11, 152, 148, 0.9);
  outline-offset: 4px;
}

/* 信息浮层：默认透明在底部，hover 滑入 */
.about-member-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25vw 1.25vw 1.042vw;
  background: linear-gradient(0deg, rgba(8, 88, 86, 0.92) 0%, rgba(8, 88, 86, 0.5) 70%, transparent 100%);
  transform: translateY(100%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}

.about-member-card:hover .about-member-info {
  transform: translateY(0);
  opacity: 1;
}

.about-member-info h3 {
  color: #fff;
  margin-bottom: 0.208vw;
  line-height: 1.4;
}

.about-member-info p {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.5;
}

/* ---------- 委员详情弹窗 ---------- */
.about-member-modal {
  position: fixed;
  inset: 0;
  z-index: 140;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.about-member-modal.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.about-member-modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(9, 41, 56, 0.72);
}

.about-member-modal-dialog {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(calc(1092 / 1920 * 100vw), 1092px);
  min-height: min(calc(660 / 1920 * 100vw), 660px);
  background: #e8f3f1;
  border-radius: 2.083vw;
  overflow: hidden;
  transform: translate(-50%, calc(-50% + 48px));
  opacity: 0;
  box-shadow: 0 28px 72px rgba(0, 0, 0, 0.22);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}

.about-member-modal.is-open .about-member-modal-dialog {
  transform: translate(-50%, -50%);
  opacity: 1;
}

.about-member-modal-layout {
  display: grid;
  grid-template-columns: 486fr 527fr;
  gap: calc(73 / 1920 * 100vw);
  align-items: center;
}

.about-member-modal-photo {
  height: min(calc(660 / 1920 * 100vw), 660px);
}

.about-member-modal-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.06);
  transform-origin: center center;
  display: block;
}

.about-member-modal-copy {
  padding: calc(96 / 1920 * 100vw) calc(64 / 1920 * 100vw) calc(72 / 1920 * 100vw) 0;
  display: flex;
  flex-direction: column;
  gap: calc(48 / 1920 * 100vw);
  min-width: 0;
}

.about-member-modal-head {
  display: flex;
  flex-direction: column;
  gap: 0.781vw;
}

.about-member-modal-head h3 {
  color: #111;
  line-height: 1.35;
}

.about-member-modal-head p {
  color: #111;
  line-height: 1.5;
}

.about-member-modal-bio {
  color: var(--color-text-soft);
  line-height: 1.8;
}

.about-member-modal-close {
  position: absolute;
  top: calc(56 / 1920 * 100vw);
  right: calc(56 / 1920 * 100vw);
  width: 41px;
  height: 41px;
  border: none;
  background: transparent;
  cursor: pointer;
  z-index: 2;
}

.about-member-modal-close span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 2px;
  background: #111;
  border-radius: 2px;
}

.about-member-modal-close span:first-child {
  transform: translate(-50%, -50%) rotate(45deg);
}

.about-member-modal-close span:last-child {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.about-member-modal-close:hover span {
  background: var(--color-primary-dark);
}

/* =============================================
   响应式适配  ≤ 1200px
   ============================================= */
@media screen and (max-width: 1200px) {
  .about-hero {
    height: auto;
    min-height: 320px;
    padding: 110px 0 40px;
  }

  .about-hero-inner {
    min-height: 210px;
  }

  .about-hero-title {
    position: static;
  }

  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-intro-copy {
    gap: 24px;
  }

  .about-intro-desc {
    gap: 20px;
  }

  .about-intro-tags {
    width: 100%;
    gap: 48px;
  }

  .about-intro-tag-title {
    font-size: 40px;
  }

  .about-intro-tag-desc {
    font-size: 18px;
  }

  .about-intro-img-wrap {
    aspect-ratio: 16 / 9;
    border-radius: 40px;
  }

  .about-intro-visual {
    border-radius: 40px;
  }

  .about-function-gallery {
    height: 360px;
  }

  .about-function-panel-content {
    left: 24px;
    right: 24px;
    bottom: 24px;
  }

  .about-function-panel-title {
    font-size: 18px;
  }

  .about-function-panel-desc {
    font-size: 15px;
  }

  .about-goal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    flex-wrap: unset;
  }

  .about-goal-sep {
    display: none;
  }

  .about-goal-item {
    padding: 0 !important;
  }

  .about-mission-section {
    padding: 56px 0 60px;
  }

  .about-mission-stage {
    height: 520px;
    min-height: 520px;
    --mission-w-active: min(calc(100% - 168px), 760px);
    --mission-w-side: 220px;
  }

  .about-mission-card-item.is-left,
  .about-mission-card-item.is-right {
    height: 240px;
  }

  .about-mission-card-item.is-active {
    height: 520px;
  }

  .about-mission-btn--prev {
    left: calc(50vw - var(--mission-w-active) / 2 - 40px);
  }

  .about-mission-btn--next {
    left: calc(50vw + var(--mission-w-active) / 2 + 40px);
  }

  .about-mission-card-main {
    padding: 52px 36px;
    gap: 24px;
  }

  .about-mission-main-copy {
    width: 280px;
  }

  .about-mission-main-panel {
    width: 320px;
    min-height: auto;
    padding: 28px 24px;
    border-radius: 24px;
  }

  .about-message-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-message-copy {
    gap: 24px;
  }

  .about-message-bg {
    width: min(calc(520 / 1920 * 100vw), 520px);
    height: min(calc(720 / 1920 * 100vw), 720px);
    opacity: 0.9;
  }

  .about-committee-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .about-member-modal-dialog {
    width: min(calc(100% - 80px), 960px);
    min-height: auto;
    border-radius: 24px;
  }

  .about-member-modal-layout {
    grid-template-columns: 360px 1fr;
    gap: 28px;
  }

  .about-member-modal-photo {
    height: 520px;
    border-radius: 24px 0 0 24px;
  }

  .about-member-modal-copy {
    padding: 64px 40px 48px 0;
    gap: 28px;
  }

  .about-member-modal-head {
    gap: 10px;
  }

  .about-member-modal-close {
    top: 28px;
    right: 28px;
  }
}

/* =============================================
   响应式适配  ≤ 768px
   ============================================= */
@media screen and (max-width: 768px) {
  .about-hero {
    padding: 88px 0 32px;
    min-height: 220px;
  }

  .about-hero-bg-image {
    width: 100%;
    right: 0;
    object-position: center;
  }

  .about-hero-bg::after {
    width: 100%;
    background-position: center;
  }

  .about-hero-bg::before {
    content: none;
  }

  .about-intro-section,
  .about-goal-section,
  .about-message-section,
  .about-committee-section {
    padding: 48px 0;
  }

  .about-function-section {
    padding-top: 48px;
  }

  .about-message-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .about-message-copy {
    gap: 18px;
  }

  .about-message-text {
    font-size: 16px;
  }

  .about-message-bg {
    width: min(88vw, 320px);
    height: min(120vw, 440px);
    max-height: 55vh;
    opacity: 0.35;
  }

  .about-function-gallery {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    height: auto;
  }

  /* 小屏取消手风琴宽度，避免与桌面 hover 规则冲突 */
  .about-function-gallery .about-function-panel,
  .about-function-gallery .about-function-panel.is-featured,
  .about-function-gallery .about-function-panel:hover,
  .about-function-gallery .about-function-panel:focus-visible {
    flex-grow: 1;
  }

  .about-function-panel {
    min-height: 220px;
  }

  .about-function-panel-content {
    left: 18px;
    right: 18px;
    bottom: 18px;
    gap: 8px;
  }

  .about-function-panel-num,
  .about-function-panel-title {
    font-size: 18px;
  }

  .about-function-gallery .about-function-panel .about-function-panel-desc {
    opacity: 1;
    transform: none;
    font-size: 14px;
  }

  .about-intro-tags {
    gap: 16px;
  }

  .about-intro-tag {
    gap: 8px;
  }

  .about-intro-tag-title {
    font-size: 36px;
  }

  .about-intro-tag-desc {
    max-width: 100%;
    font-size: 16px;
  }

  .about-goal-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .about-goal-num {
    margin-bottom: 8px;
  }

  .about-goal-divider {
    margin-bottom: 12px;
    width: 32px;
  }

  .about-goal-content {
    gap: 8px;
  }

  .about-mission-section {
    padding: 40px 0 44px;
  }

  .about-mission-stage {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    height: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .about-mission-card-item {
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    width: 100%;
    height: auto;
    transform: none;
    border-radius: 18px;
    opacity: 1;
    box-shadow: 0 16px 34px rgba(9, 41, 56, 0.12);
  }

  .about-mission-card-media {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .about-mission-card-media,
  .about-mission-card-media img {
    height: auto;
  }

  .about-mission-card-media img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
  }

  .about-mission-card-item.is-left,
  .about-mission-card-item.is-right {
    left: auto;
    right: auto;
    top: auto;
    width: 100%;
    height: auto;
    transform: none;
    opacity: 1;
  }

  .about-mission-card-item.is-active {
    left: auto;
    right: auto;
    top: auto;
    width: 100%;
    height: auto;
    transform: none;
    border-radius: 18px;
  }

  .about-mission-btn {
    display: none;
  }

  .about-mission-card-overlay {
    display: none;
  }

  .about-mission-card-overlay h3 {
    font-size: 16px;
    line-height: 1.3;
  }

  .about-mission-card-main {
    position: static;
    inset: auto;
    opacity: 1;
    pointer-events: auto;
    padding: 18px 16px 20px;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 14px;
    background: #fff;
  }

  .about-mission-card-item.is-active .about-mission-card-overlay {
    opacity: 1;
  }

  .about-mission-card-item.is-active .about-mission-card-main {
    opacity: 1;
    pointer-events: auto;
  }

  .about-mission-main-copy,
  .about-mission-main-panel {
    width: 100%;
  }

  .about-mission-label {
    margin-bottom: 10px;
  }

  .about-mission-main-copy,
  .about-mission-label {
    color: #000;
  }

  .about-mission-main-copy p {
    font-size: 14px;
    line-height: 1.65;
    color: rgba(0, 0, 0, 0.7);
  }

  .about-mission-main-panel {
    min-height: auto;
    padding: 14px 14px;
    border-radius: 16px;
    background: rgba(232, 243, 241, 0.9);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .about-mission-main-panel p {
    font-size: 12px;
    line-height: 1.7;
    color: rgba(0, 0, 0, 0.7);
  }

  .about-mission-dots {
    display: none;
  }

  .about-mission-dot {
    width: 8px;
    min-width: 8px;
    height: 8px;
    min-height: 8px;
  }

  .about-member-info {
    padding: 14px 16px 12px;
  }

  .about-member-info h3 {
    margin-bottom: 4px;
  }

  .about-committee-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .about-committee-sub {
    margin-bottom: 24px;
  }

  .about-message-grid {
    gap: 24px;
  }

  .about-member-modal-dialog {
    width: calc(100% - 32px);
    border-radius: 18px;
    max-height: calc(100svh - 48px);
    overflow: auto;
    display: flex;
    flex-direction: column;
  }

  .about-member-modal-layout {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .about-member-modal-photo {
    width: 100%;
    height: clamp(420px, 60svh, 620px);
    border-radius: 18px 18px 0 0;
    overflow: hidden;
  }

  .about-member-modal-copy {
    padding: 22px 18px 20px;
    gap: 18px;
  }

  .about-member-modal-head {
    gap: 6px;
  }

  .about-member-modal-bio {
    line-height: 1.75;
  }

  .about-member-modal-close {
    position: sticky;
    top: 14px;
    width: 34px;
    height: 34px;
    margin: 14px 14px -48px auto;
    z-index: 10;
  }

  .about-member-modal-close span {
    width: 18px;
  }
}