/* ===== 品牌档案 · About ===== */
.page-about {
  color: var(--ink);
  background: var(--white);
}

/* ===== Hero 首屏 ===== */
.page-about__hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
  padding: 1.75rem 0 3rem;
}
.page-about__hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -10%;
  width: 46%;
  height: 100%;
  background: linear-gradient(120deg, transparent 46%, rgba(0, 230, 118, 0.13) 46% 52%, transparent 52%);
  pointer-events: none;
}
.page-about__hero::after {
  content: "";
  position: absolute;
  right: 2.5rem;
  bottom: -4.5rem;
  width: 10rem;
  height: 10rem;
  border: 2px solid rgba(0, 230, 118, 0.28);
  transform: rotate(45deg);
  pointer-events: none;
}
.page-about__hero .breadcrumb__link,
.page-about__hero .breadcrumb__sep {
  color: rgba(255, 255, 255, 0.6);
  text-decoration-color: rgba(255, 255, 255, 0.3);
}
.page-about__hero .breadcrumb__current {
  color: var(--green);
}
.page-about__hero-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2.5rem;
  position: relative;
  z-index: 1;
}
.page-about__hero-mega {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 6.5rem);
  line-height: 0.9;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(0, 230, 118, 0.18);
  -webkit-text-stroke: 1px rgba(0, 230, 118, 0.78);
}
.page-about__hero-main h1 {
  font-size: clamp(1.6rem, 3.6vw, 2.8rem);
  line-height: 1.2;
  margin: 0.75rem 0 1.25rem;
  max-width: 18em;
}
.page-about__hero-lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.8);
  max-width: 44em;
  margin-bottom: 1.75rem;
}
.page-about__hero-aside {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  min-height: 4rem;
}
.page-about__hero-vert {
  writing-mode: vertical-rl;
  font-size: var(--text-small);
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.6);
  border-left: 1px solid rgba(0, 230, 118, 0.55);
  padding-left: 0.75rem;
  white-space: nowrap;
  text-transform: uppercase;
}

/* ===== 通用区块元素 ===== */
.page-about__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-data);
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-dark);
  font-weight: 700;
}
.page-about__tag::before {
  content: "";
  width: 26px;
  height: 3px;
  background: var(--green);
  display: inline-block;
}
.page-about__tag--light {
  color: var(--green);
}
.page-about__section-head {
  margin-bottom: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.page-about__section-desc {
  color: var(--gray-dark);
  line-height: 1.6;
  margin-top: 0.5rem;
}

/* ===== 我们缘起 · 时间线 ===== */
.page-about__origin {
  background: var(--light);
  padding: 3.5rem 0 4rem;
}
.page-about__origin h2,
.page-about__data h2,
.page-about__partners h2,
.page-about__honors h2 {
  font-size: var(--text-h2);
  margin: 0.65rem 0 1rem;
  color: var(--ink);
}
.page-about__timeline {
  position: relative;
  padding-left: 44px;
}
.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--green), var(--line));
}
.page-about__tl-item {
  position: relative;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(26, 26, 26, 0.06);
  margin-bottom: 1.25rem;
  transition: box-shadow 180ms var(--ease-out), transform 180ms var(--ease-out);
}
.page-about__tl-item:hover {
  box-shadow: 0 6px 24px rgba(0, 230, 118, 0.14);
  transform: translateY(-2px);
}
.page-about__tl-item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 22px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px var(--light);
}
.page-about__tl-item::after {
  content: "";
  position: absolute;
  left: -20px;
  top: 27px;
  width: 10px;
  height: 2px;
  background: var(--green);
  transform: rotate(-30deg);
}
.page-about__tl-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  cursor: pointer;
  list-style: none;
}
.page-about__tl-summary::-webkit-details-marker {
  display: none;
}
.page-about__tl-year {
  font-family: var(--font-data);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--green-dark);
  min-width: 52px;
}
.page-about__tl-label {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.page-about__tl-label strong {
  font-size: 1.05rem;
  color: var(--ink);
}
.page-about__tl-label small {
  font-size: var(--text-small);
  color: var(--gray-dark);
}
.page-about__tl-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--mint);
  color: var(--green-dark);
  display: grid;
  place-items: center;
  font-size: 1.05rem;
  font-weight: 700;
  transition: transform 180ms var(--ease-out);
}
.page-about__tl-item[open] .page-about__tl-mark {
  transform: rotate(45deg);
}
.page-about__tl-detail {
  padding: 0 1.25rem 1.25rem;
  color: var(--gray-dark);
  line-height: 1.7;
}
.page-about__tl-detail p {
  margin-bottom: 0.85rem;
}
.page-about__tl-link {
  display: inline-block;
  color: var(--green-dark);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--green);
  transition: color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}
.page-about__tl-link:hover {
  color: var(--green);
  border-color: var(--green-dark);
}

/* ===== 数据如何运作 ===== */
.page-about__data {
  background: var(--white);
  padding: 3.5rem 0;
}
.page-about__data-grid {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}
.page-about__data-copy p {
  color: var(--gray-dark);
  line-height: 1.7;
}
.page-about__data-points {
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
}
.page-about__data-points li {
  padding: 0.72rem 0 0.72rem 1.5rem;
  position: relative;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  line-height: 1.55;
}
.page-about__data-points li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}
.page-about__data-rule {
  margin-top: 1.5rem;
  background: linear-gradient(110deg, var(--green) 0%, var(--mint) 100%);
  color: var(--ink);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transform: rotate(-0.8deg);
  box-shadow: 0 8px 24px rgba(0, 230, 118, 0.16);
}
.page-about__data-rule-label {
  display: block;
  font-weight: 700;
  font-size: var(--text-small);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.page-about__data-rule-value {
  display: block;
  font-family: var(--font-display);
  font-size: 3.5rem;
  line-height: 1;
  margin: 0.35rem 0 0.5rem;
}
.page-about__data-rule-value em {
  font-style: normal;
  font-size: 1.2rem;
  font-family: var(--font-body);
  margin-left: 0.25rem;
  font-weight: 700;
}
.page-about__data-rule > span:last-child {
  font-size: var(--text-small);
  opacity: 0.78;
}
.page-about__data-figure {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transform: rotate(0.6deg);
  box-shadow: 0 10px 30px rgba(26, 26, 26, 0.08);
}
.page-about__data-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-about__data-figure figcaption {
  padding: 0.85rem 1rem;
  font-size: var(--text-small);
  color: var(--gray-dark);
  border-top: 3px solid var(--green);
  font-family: var(--font-data);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ===== 团队构成 ===== */
.page-about__team {
  background: var(--ink);
  color: var(--white);
  padding: 3.5rem 0;
  position: relative;
}
.page-about__team::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 14px;
  background: repeating-linear-gradient(-55deg, var(--green) 0 10px, transparent 10px 22px);
  opacity: 0.32;
}
.page-about__team-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.page-about__team-figure {
  margin: 0;
  background: var(--ink);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
.page-about__team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  opacity: 0.9;
}
.page-about__team-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, transparent 52%, rgba(0, 230, 118, 0.2) 52%);
}
.page-about__team-figure figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 1;
  background: var(--ink);
  color: var(--green);
  font-size: var(--text-small);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius) 0 0 0;
  font-family: var(--font-data);
  letter-spacing: 0.08em;
}
.page-about__team-copy .page-about__tag {
  color: var(--green);
}
.page-about__team-copy h2 {
  font-size: var(--text-h2);
  margin: 0.65rem 0 0.85rem;
  color: var(--white);
}
.page-about__team-intro {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.7;
}
.page-about__team-functions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin-top: 1.5rem;
}
.page-about__team-fn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  transition: background 180ms var(--ease-out), transform 180ms var(--ease-out);
}
.page-about__team-fn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}
.page-about__team-fn .data-figure {
  color: var(--green);
  font-family: var(--font-data);
  font-size: 1.6rem;
  line-height: 1;
}
.page-about__team-fn h3 {
  color: var(--white);
  margin: 0.5rem 0 0.35rem;
  font-size: 1.02rem;
}
.page-about__team-fn p {
  color: rgba(255, 255, 255, 0.64);
  font-size: var(--text-small);
  line-height: 1.6;
}

/* ===== 合作伙伴 ===== */
.page-about__partners {
  background: var(--light);
  padding: 3.5rem 0;
}
.page-about__partners-head {
  max-width: 720px;
}
.page-about__partners-head p {
  color: var(--gray-dark);
  line-height: 1.7;
}
.page-about__leagues {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 2rem 0;
}
.page-about__league {
  background: var(--white);
  border: 2px solid var(--ink);
  padding: 0.42rem 1.1rem;
  font-family: var(--font-data);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  border-radius: var(--radius);
  transition: all 180ms var(--ease-out);
}
.page-about__league:hover {
  background: var(--green);
  border-color: var(--green);
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 230, 118, 0.25);
}
.page-about__league:nth-child(even) {
  transform: rotate(1.5deg);
}
.page-about__league:nth-child(odd) {
  transform: rotate(-1deg);
}
.page-about__league:nth-child(even):hover {
  transform: translateY(-2px) rotate(1.5deg);
}
.page-about__league:nth-child(odd):hover {
  transform: translateY(-2px) rotate(-1deg);
}
.page-about__league--more {
  border-style: dashed;
  background: transparent;
  color: var(--gray-dark);
}
.page-about__partner-note {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  background: var(--white);
  border-left: 6px solid var(--green);
  padding: 1.75rem;
  border-radius: var(--radius);
  color: var(--gray-dark);
  line-height: 1.7;
}

/* ===== 荣誉与认可 ===== */
.page-about__honors {
  background: var(--white);
  padding: 3.5rem 0;
}
.page-about__honors-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.page-about__honors-copy p {
  color: var(--gray-dark);
  line-height: 1.7;
}
.page-about__honor-list {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
}
.page-about__honor-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  line-height: 1.6;
}
.page-about__honor-list li::before {
  content: "★";
  color: var(--yellow);
  font-size: 1rem;
  line-height: 1.6;
}
.page-about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 1.75rem;
}
.page-about__stat {
  background: var(--mint);
  border-radius: var(--radius);
  padding: 1.2rem 1rem;
  position: relative;
  overflow: hidden;
}
.page-about__stat::after {
  content: "";
  position: absolute;
  right: -14px;
  bottom: -14px;
  width: 40px;
  height: 40px;
  background: var(--green);
  opacity: 0.22;
  transform: rotate(45deg);
}
.page-about__stat-num {
  font-family: var(--font-data);
  font-size: 2.1rem;
  line-height: 1;
  color: var(--ink);
  display: block;
  margin-bottom: 0.3rem;
}
.page-about__stat-label {
  font-size: var(--text-small);
  color: var(--ink);
  opacity: 0.72;
}
.page-about__honors-figure {
  margin: 0;
  background: var(--white);
  border: 3px solid var(--yellow);
  border-radius: var(--radius-lg);
  padding: 0.85rem;
  transform: rotate(-0.8deg);
  box-shadow: 0 8px 24px rgba(26, 26, 26, 0.08);
  position: relative;
}
.page-about__honors-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 4px;
}
.page-about__honors-figure figcaption {
  position: absolute;
  left: -0.5rem;
  bottom: 1rem;
  background: var(--yellow);
  color: var(--ink);
  padding: 0.5rem 0.9rem;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  border-radius: 0 var(--radius) var(--radius) 0;
  transform: rotate(-1deg);
}

/* ===== 信任与联系 ===== */
.page-about__trust {
  background: var(--ink);
  color: var(--white);
  padding: 3rem 0;
}
.page-about__trust-inner {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}
.page-about__trust-copy .page-about__tag {
  margin-bottom: 0.85rem;
}
.page-about__trust-text {
  color: rgba(255, 255, 255, 0.82);
  max-width: 46em;
  font-size: 1.05rem;
  line-height: 1.75;
  margin-top: 0.5rem;
}
.page-about__trust-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ===== 桌面端适配 ===== */
@media (min-width: 768px) {
  .page-about__hero {
    padding: 2.25rem 0 4rem;
  }
  .page-about__hero-layout {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.5rem;
    margin-top: 3rem;
  }
  .page-about__hero-aside {
    align-items: flex-end;
  }
  .page-about__section-head {
    display: grid;
    grid-template-columns: 1fr 20rem;
    gap: 2rem;
    align-items: end;
  }
  .page-about__section-desc {
    text-align: right;
  }
  .page-about__timeline {
    padding-left: 62px;
  }
  .page-about__timeline::before {
    left: 18px;
  }
  .page-about__tl-item::before {
    left: -47px;
    top: 26px;
  }
  .page-about__tl-item::after {
    left: -26px;
    top: 31px;
  }
  .page-about__tl-summary {
    padding: 1.4rem 1.8rem;
  }
  .page-about__tl-year {
    font-size: 1.9rem;
    min-width: 72px;
  }
  .page-about__tl-detail {
    padding: 0 1.8rem 1.6rem 6.2rem;
  }
  .page-about__data-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: center;
  }
  .page-about__team-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
    align-items: center;
  }
  .page-about__team-functions {
    grid-template-columns: 1fr 1fr;
  }
  .page-about__partners-head {
    display: block;
  }
  .page-about__honors-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    align-items: center;
  }
  .page-about__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
  .page-about__trust-inner {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .page-about__origin,
  .page-about__data,
  .page-about__team,
  .page-about__partners,
  .page-about__honors {
    padding: 5rem 0;
  }
  .page-about__hero-layout {
    gap: 4rem;
  }
  .page-about__data-grid {
    gap: 4.5rem;
  }
  .page-about__team-grid {
    gap: 4.5rem;
  }
}