/* =========================================================
   页面：我们是谁  /who-we-are/
   作用域：.page-about
   ========================================================= */

.page-about {
  --about-edge: 3px;
  --about-pad-x: 18px;
  background: var(--snow);
  color: var(--graphite);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .about-p {
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.78;
  color: var(--graphite);
  max-width: 66ch;
}

/* ---------- 通用小标题 ---------- */
.page-about .about-head {
  max-width: 62ch;
  margin-bottom: 40px;
}

.page-about .about-head .section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.08;
  letter-spacing: -.01em;
  margin: 12px 0 0;
  color: var(--night-blue);
}

.page-about .about-head-lede {
  margin-top: 16px;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--fog);
  max-width: 62ch;
}

.page-about .about-eyebrow--light {
  color: var(--barley-gold);
}

.page-about .about-head--dark .section-title {
  color: var(--snow);
}

.page-about .about-lede--light {
  margin-top: 16px;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--ice-blue);
  max-width: 60ch;
}

/* =========================================================
   首屏
   ========================================================= */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 26px 0 60px;
  background: var(--night-blue);
  color: var(--snow);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -34%;
  right: -26%;
  width: 92%;
  height: 172%;
  background: linear-gradient(152deg, var(--lake-blue) 0%, #06334a 58%, var(--night-blue) 100%);
  transform: skewX(-12deg);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -14%;
  bottom: -92px;
  width: 66%;
  height: 190px;
  background: var(--barley-gold);
  opacity: .16;
  transform: skewX(-20deg) rotate(-2.5deg);
}

.page-about .about-hero-inner {
  display: grid;
  gap: 36px;
}

.page-about .about-hero .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--ice-blue);
}

.page-about .about-hero .breadcrumb a {
  color: var(--ice-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(207, 227, 240, .45);
  padding-bottom: 1px;
}

.page-about .about-hero .breadcrumb a:hover,
.page-about .about-hero .breadcrumb a:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--lava-orange);
}

.page-about .about-hero-eyebrow {
  margin-top: 24px;
  color: var(--barley-gold);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 7.2vw, 64px);
  line-height: 1.03;
  letter-spacing: -.015em;
  margin: 14px 0 0;
  color: var(--snow);
  max-width: 15ch;
}

.page-about .about-hero-lede {
  margin: 22px 0 0;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.82;
  color: var(--ice-blue);
}

.page-about .hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(207, 227, 240, .26);
  border: 1px solid rgba(207, 227, 240, .26);
}

.page-about .hero-stats li {
  background: rgba(7, 28, 43, .58);
  padding: 16px 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.page-about .hero-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5.4vw, 36px);
  letter-spacing: .04em;
  line-height: 1;
  color: var(--barley-gold);
}

.page-about .hero-stat-label {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ice-blue);
}

/* =========================================================
   发展历程
   ========================================================= */
.page-about .about-timeline {
  background: var(--snow);
  padding: 64px 0 76px;
}

.page-about .tl {
  display: grid;
  gap: 26px;
}

.page-about .tl-rail ul {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .tl-rail ul::-webkit-scrollbar {
  display: none;
}

.page-about .tl-year {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 14px;
  text-decoration: none;
  color: var(--fog);
  border-left: 3px solid var(--ice-blue);
  background: var(--snow);
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-about .tl-year:hover,
.page-about .tl-year:focus-visible {
  color: var(--night-blue);
  border-left-color: var(--barley-gold);
  background: var(--ice-blue);
}

.page-about .tl-year-num {
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: .06em;
  line-height: 1;
}

.page-about .tl-year-tag {
  font-size: 11.5px;
  letter-spacing: .08em;
}

.page-about .tl:has(#stage-2016:target) .tl-year[href="#stage-2016"],
.page-about .tl:has(#stage-2019:target) .tl-year[href="#stage-2019"],
.page-about .tl:has(#stage-2021:target) .tl-year[href="#stage-2021"],
.page-about .tl:has(#stage-2023:target) .tl-year[href="#stage-2023"] {
  color: var(--night-blue);
  border-left-color: var(--lava-orange);
  background: var(--ice-blue);
}

.page-about .tl-panels {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.page-about .tl-panel {
  position: relative;
  background: var(--snow);
  border: var(--about-edge) solid var(--night-blue);
  box-shadow: 8px 8px 0 var(--night-blue);
  padding: 22px var(--about-pad-x);
  scroll-margin-top: 120px;
}

.page-about .tl-panel-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--night-blue);
  background: var(--barley-gold);
  padding: 5px 10px 4px;
}

.page-about .tl-panel h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3.4vw, 27px);
  line-height: 1.2;
  letter-spacing: -.005em;
  margin: 16px 0 0;
  color: var(--night-blue);
}

.page-about .tl-panel p {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.76;
  color: var(--graphite);
  max-width: 62ch;
}

.page-about .tl-panel ul {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .tl-panel ul li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--lake-blue);
  background: var(--ice-blue);
  padding: 5px 10px 4px;
}

/* =========================================================
   影像带
   ========================================================= */
.page-about .about-band {
  position: relative;
  margin: 0;
  background: var(--night-blue);
  overflow: hidden;
}

.page-about .about-band img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-band figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px var(--about-pad-x) 20px;
  background: linear-gradient(to top, rgba(7, 28, 43, .92), rgba(7, 28, 43, 0));
  color: var(--snow);
  border-top: 1px solid rgba(31, 209, 192, .55);
}

.page-about .about-band-cap-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--electric-teal);
}

.page-about .about-band-cap-text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.68;
  max-width: 56ch;
  color: var(--snow);
}

/* =========================================================
   高原作业现场
   ========================================================= */
.page-about .about-field {
  padding: 64px 0;
  background: var(--snow);
}

.page-about .about-field-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-field-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-field-list li {
  position: relative;
  padding-left: 24px;
  font-size: 16px;
  line-height: 1.72;
  color: var(--graphite);
  max-width: 60ch;
}

.page-about .about-field-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  background: var(--lava-orange);
  transform: rotate(45deg);
}

.page-about .about-field-list strong {
  color: var(--lake-blue);
  font-weight: 700;
}

.page-about .about-field-media {
  margin: 0;
  border: var(--about-edge) solid var(--night-blue);
  box-shadow: 10px 10px 0 var(--lake-blue);
  background: var(--night-blue);
}

.page-about .about-field-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-field-cap {
  display: block;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  line-height: 1.6;
  color: var(--ice-blue);
  background: var(--night-blue);
}

/* =========================================================
   团队分工
   ========================================================= */
.page-about .about-team {
  padding: 64px 0 76px;
  background: var(--ice-blue);
}

.page-about .team-wrap {
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-about .team-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-about .team-tablist {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: var(--about-edge) solid var(--night-blue);
}

.page-about .team-tablist::-webkit-scrollbar {
  display: none;
}

.page-about .team-tablist label {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 15px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .01em;
  color: var(--lake-blue);
  cursor: pointer;
  border-bottom: 4px solid transparent;
  margin-bottom: calc(-1 * var(--about-edge));
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-about .team-tablist label:hover {
  background: rgba(11, 92, 138, .1);
}

.page-about .team-tab-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--fog);
}

.page-about #team-data:checked ~ .team-tablist label[for="team-data"],
.page-about #team-edit:checked ~ .team-tablist label[for="team-edit"],
.page-about #team-dev:checked ~ .team-tablist label[for="team-dev"],
.page-about #team-care:checked ~ .team-tablist label[for="team-care"] {
  color: var(--night-blue);
  border-bottom-color: var(--lava-orange);
  background: var(--snow);
}

.page-about #team-data:checked ~ .team-tablist label[for="team-data"] .team-tab-idx,
.page-about #team-edit:checked ~ .team-tablist label[for="team-edit"] .team-tab-idx,
.page-about #team-dev:checked ~ .team-tablist label[for="team-dev"] .team-tab-idx,
.page-about #team-care:checked ~ .team-tablist label[for="team-care"] .team-tab-idx {
  color: var(--barley-gold);
}

.page-about #team-data:focus-visible ~ .team-tablist label[for="team-data"],
.page-about #team-edit:focus-visible ~ .team-tablist label[for="team-edit"],
.page-about #team-dev:focus-visible ~ .team-tablist label[for="team-dev"],
.page-about #team-care:focus-visible ~ .team-tablist label[for="team-care"] {
  outline: 3px solid var(--electric-teal);
  outline-offset: -3px;
}

.page-about .team-panels {
  min-width: 0;
}

.page-about .team-panel {
  display: none;
  background: var(--snow);
  border: var(--about-edge) solid var(--night-blue);
  box-shadow: 8px 8px 0 var(--night-blue);
  padding: 24px var(--about-pad-x);
  margin-top: 24px;
}

.page-about #team-data:checked ~ .team-panels .team-panel--data,
.page-about #team-edit:checked ~ .team-panels .team-panel--edit,
.page-about #team-dev:checked ~ .team-panels .team-panel--dev,
.page-about #team-care:checked ~ .team-panels .team-panel--care {
  display: block;
}

.page-about .team-panel h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 3vw, 24px);
  line-height: 1.22;
  margin: 0;
  color: var(--night-blue);
}

.page-about .team-panel p {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.76;
  color: var(--graphite);
  max-width: 60ch;
}

.page-about .team-metrics {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .team-metrics li {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--night-blue);
  border: 2px solid var(--barley-gold);
  padding: 6px 12px 5px;
}

.page-about .team-media {
  margin: 0;
}

.page-about .team-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: var(--about-edge) solid var(--night-blue);
  box-shadow: 10px 10px 0 var(--barley-gold);
  background: var(--night-blue);
}

.page-about .team-media figcaption {
  margin-top: 16px;
}

/* =========================================================
   合作生态
   ========================================================= */
.page-about .about-partners {
  position: relative;
  overflow: hidden;
  padding: 64px 0;
  background: var(--night-blue);
  color: var(--snow);
}

.page-about .about-partners::before {
  content: "";
  position: absolute;
  top: -40%;
  left: -18%;
  width: 58%;
  height: 160%;
  background: var(--lake-blue);
  opacity: .22;
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-about .about-partners .container {
  position: relative;
  z-index: 1;
}

.page-about .partner-grid {
  display: grid;
  gap: 18px;
}

.page-about .partner-card {
  background: rgba(11, 92, 138, .24);
  border: 2px solid rgba(207, 227, 240, .26);
  border-top: 5px solid var(--barley-gold);
  padding: 24px var(--about-pad-x) 26px;
}

.page-about .partner-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--electric-teal);
}

.page-about .partner-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.2;
  margin: 12px 0 0;
  color: var(--snow);
}

.page-about .partner-card p {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.74;
  color: var(--ice-blue);
}

/* =========================================================
   服务标准
   ========================================================= */
.page-about .about-standards {
  padding: 64px 0;
  background: var(--snow);
}

.page-about .std-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--about-edge) solid var(--night-blue);
}

.page-about .std-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 22px 2px;
  border-bottom: 1px solid rgba(42, 46, 51, .18);
  align-items: start;
}

.page-about .std-idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--lava-orange);
  padding-top: 4px;
}

.page-about .std-list h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.28;
  margin: 0;
  color: var(--night-blue);
}

.page-about .std-list p {
  margin: 8px 0 0;
  font-size: 15.5px;
  line-height: 1.74;
  color: var(--graphite);
  max-width: 68ch;
}

/* =========================================================
   成长印记
   ========================================================= */
.page-about .about-honor {
  padding: 60px 0 80px;
  background: var(--ice-blue);
}

.page-about .honor-grid {
  display: grid;
  gap: 18px;
}

.page-about .honor-item {
  background: var(--snow);
  border: var(--about-edge) solid var(--night-blue);
  box-shadow: 7px 7px 0 var(--night-blue);
  padding: 26px var(--about-pad-x) 24px;
}

.page-about .honor-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 44px);
  letter-spacing: .02em;
  line-height: 1;
  color: var(--lake-blue);
}

.page-about .honor-item h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
  margin: 14px 0 0;
  color: var(--night-blue);
}

.page-about .honor-item p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--fog);
}

/* =========================================================
   收束面板
   ========================================================= */
.page-about .about-close {
  padding: 0 0 84px;
  background: var(--snow);
}

.page-about .close-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 30px;
  padding: 34px var(--about-pad-x) 38px;
  background: var(--night-blue);
  color: var(--snow);
  border: var(--about-edge) solid var(--night-blue);
  box-shadow: 12px 12px 0 var(--barley-gold);
}

.page-about .close-panel::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -22%;
  width: 62%;
  height: 150%;
  background: var(--lake-blue);
  opacity: .28;
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-about .close-main,
.page-about .close-side {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.page-about .close-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 4.6vw, 38px);
  line-height: 1.1;
  letter-spacing: -.01em;
  margin: 14px 0 0;
  color: var(--snow);
  max-width: 20ch;
}

.page-about .close-text {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ice-blue);
  max-width: 56ch;
}

.page-about .close-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .close-side {
  color: var(--electric-teal);
}

.page-about .close-svg {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
}

.page-about .close-side-label {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  line-height: 1.6;
  color: var(--ice-blue);
  max-width: 34ch;
}

/* =========================================================
   响应式
   ========================================================= */
@media (min-width: 700px) {
  .page-about {
    --about-pad-x: 26px;
  }

  .page-about .about-band img {
    aspect-ratio: 1800 / 800;
  }

  .page-about .about-band figcaption {
    padding: 40px 32px 28px;
  }

  .page-about .about-band-cap-text {
    font-size: 16px;
  }

  .page-about .hero-stats li {
    padding: 20px 22px 18px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero {
    padding: 34px 0 84px;
  }

  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
  }

  .page-about .hero-stats {
    margin-bottom: 6px;
  }

  .page-about .about-timeline,
  .page-about .about-field,
  .page-about .about-team,
  .page-about .about-partners,
  .page-about .about-standards {
    padding: 88px 0;
  }

  .page-about .about-honor {
    padding: 80px 0 96px;
  }

  .page-about .about-close {
    padding-bottom: 108px;
  }

  .page-about .about-head {
    margin-bottom: 52px;
  }

  .page-about .tl {
    grid-template-columns: 136px minmax(0, 1fr);
    gap: 44px;
  }

  .page-about .tl-rail {
    position: sticky;
    top: 108px;
    align-self: start;
  }

  .page-about .tl-rail ul {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .tl-year {
    padding: 12px 14px;
  }

  .page-about .tl-panel:nth-child(odd) {
    transform: translateX(-8px);
  }

  .page-about .tl-panel:nth-child(even) {
    transform: translateX(16px);
  }

  .page-about .about-field-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .team-wrap {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .82fr);
    gap: 52px;
  }

  .page-about .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .honor-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .close-panel {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 52px;
    align-items: center;
    padding: 56px 48px 58px;
  }

  .page-about .close-side {
    justify-self: end;
    width: 100%;
    max-width: 340px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero h1 {
    font-size: clamp(48px, 5vw, 64px);
  }

  .page-about .tl-panel {
    padding: 32px 34px;
  }

  .page-about .team-panel {
    padding: 32px 34px;
  }
}

@media (max-width: 719px) {
  .page-about .about-timeline,
  .page-about .about-field,
  .page-about .about-team,
  .page-about .about-partners,
  .page-about .about-standards {
    padding: 48px 0 54px;
  }

  .page-about .about-honor {
    padding: 48px 0 60px;
  }

  .page-about .about-close {
    padding-bottom: 68px;
  }

  .page-about .about-head {
    margin-bottom: 30px;
  }

  .page-about .std-list li {
    padding: 18px 2px;
  }

  .page-about .about-partners::before,
  .page-about .close-panel::before {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}