.page-about {
  --about-gold-line: rgba(201, 162, 39, 0.55);
  --about-soft-gold: rgba(201, 162, 39, 0.12);
  --about-soft-blue: rgba(79, 195, 247, 0.16);
  --about-card-round: 14px;
  --about-deep-alt: #0d2c5e;
}

.page-about .ky-container--wide {
  max-width: 1400px;
}

.page-about a {
  text-decoration: none;
}

/* ---------- 面包屑 ---------- */
.page-about__breadcrumb-wrap {
  padding-top: 1.25rem;
}

/* ---------- 首屏框景 ---------- */
.page-about__hero {
  padding-top: var(--ky-space-2);
  padding-bottom: var(--ky-space-6);
  position: relative;
}

.page-about__hero::before {
  content: "";
  position: absolute;
  top: -1.5rem;
  right: -4rem;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, var(--about-soft-gold), transparent 70%);
}

.page-about__hero-frame {
  position: relative;
  padding: var(--ky-space-5) var(--ky-space-4);
  background:
    linear-gradient(135deg, rgba(79, 195, 247, 0.08), transparent 30%),
    linear-gradient(335deg, rgba(201, 162, 39, 0.10), transparent 45%),
    linear-gradient(135deg, var(--ky-fog) 0%, #eef2f8 60%, #e7ecf4 100%);
  border: 1px solid transparent;
  box-shadow: var(--ky-shadow-card);
  overflow: hidden;
}

.page-about__hero-frame::before,
.page-about__hero-frame::after {
  content: "";
  position: absolute;
  width: 68px;
  height: 68px;
  pointer-events: none;
}

.page-about__hero-frame::before {
  top: 10px;
  left: 10px;
  border-top: 3px solid var(--ky-gold);
  border-left: 3px solid var(--ky-gold);
}

.page-about__hero-frame::after {
  right: 10px;
  bottom: 10px;
  border-right: 3px solid var(--ky-gold);
  border-bottom: 3px solid var(--ky-gold);
}

.page-about__hero-grid {
  display: grid;
  gap: var(--ky-space-4);
}

.page-about__hero-title {
  margin: 0.35rem 0 1rem;
  letter-spacing: -0.02em;
}

.page-about__hero-lead {
  max-width: 46rem;
  margin-top: 0.75rem;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.6rem;
}

.page-about__hero-side {
  border-left: 3px solid var(--ky-gold);
  padding: 1.35rem 0 1.35rem 1.25rem;
  background: rgba(201, 162, 39, 0.07);
  border-radius: 0 var(--ky-radius) var(--ky-radius) 0;
  font-size: 0.92rem;
}

.page-about__hero-status {
  margin-top: 1.1rem;
  display: grid;
  gap: 0.35rem;
}

.page-about__status-note {
  display: block;
  font-family: var(--ky-font-mono);
  font-size: 0.75rem;
  color: var(--ky-ink);
  opacity: 0.7;
  letter-spacing: 0.04em;
}

/* ---------- 内容栅格：窄注释 + 宽内容 ---------- */
.page-about__content-grid {
  display: grid;
  gap: var(--ky-space-5);
}

.page-about__side-note {
  font-family: var(--ky-font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  line-height: 2;
  color: var(--ky-ink);
  opacity: 0.6;
  margin: 1.5rem 0 0;
}

.page-about__main {
  min-width: 0;
}

/* ---------- 01 品牌使命 ---------- */
.page-about__mission {
  position: relative;
}

.page-about__mission::after {
  content: "";
  position: absolute;
  top: 8rem;
  left: -5rem;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, var(--about-soft-blue), transparent 70%);
}

.page-about__mission-text {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--ky-ink);
  max-width: 46rem;
  margin-bottom: var(--ky-space-4);
}

.page-about__mission-cards {
  display: grid;
  gap: var(--ky-space-3);
}

.page-about__mission-card {
  background: var(--ky-fog);
  border-radius: var(--about-card-round);
  padding: 1.6rem;
  border: 1px solid var(--ky-silver);
  border-top: 3px solid var(--ky-gold);
  box-shadow: var(--ky-shadow-card);
  transition: transform var(--ky-ease), box-shadow var(--ky-ease);
}

.page-about__mission-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ky-shadow-hover);
}

.page-about__mission-cap {
  display: block;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ky-deep-blue);
  margin: 0.4rem 0 0.3rem;
}

.page-about__mission-card p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ky-ink);
  opacity: 0.78;
  margin: 0;
}

/* ---------- 02 发展历程 ---------- */
.page-about__section-head {
  display: grid;
  gap: var(--ky-space-3);
  margin-bottom: var(--ky-space-5);
}

.page-about__timeline-wrap {
  display: grid;
  gap: var(--ky-space-5);
  align-items: start;
}

.page-about__timeline {
  position: relative;
  display: grid;
  gap: var(--ky-space-4);
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--ky-gold), rgba(201, 162, 39, 0.3));
}

.page-about__tl-item {
  position: relative;
  display: grid;
  gap: 0.5rem;
}

.page-about__tl-meta {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding-left: 1.75rem;
}

.page-about__tl-meta::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ky-gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.2);
}

.page-about__tl-year {
  font-family: var(--ky-font-mono);
  font-size: 2.6rem;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--ky-gold);
}

.page-about__tl-version {
  font-family: var(--ky-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  background: var(--ky-deep-blue);
  color: #fff;
  display: inline-block;
  padding: 0.22rem 0.55rem;
  border-radius: 99px;
}

.page-about__tl-body {
  background: #fff;
  border-radius: var(--about-card-round);
  border: 1px solid var(--ky-silver);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--ky-shadow-card);
}

.page-about__tl-body .ky-badge {
  margin-bottom: 0.6rem;
}

.page-about__tl-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ky-deep-blue);
  margin: 0.4rem 0;
}

.page-about__tl-desc {
  color: var(--ky-ink);
  opacity: 0.8;
  line-height: 1.7;
  font-size: 0.93rem;
  margin: 0 0 0.5rem;
}

.page-about__tl-toggle {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--ky-deep-blue);
  font-weight: 600;
  font-size: 0.84rem;
  padding: 0.3rem 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ky-font-sans);
}

.page-about__tl-toggle::after {
  content: "+";
  font-family: var(--ky-font-mono);
  font-size: 1.15rem;
  color: var(--ky-gold);
  font-weight: 700;
  transition: transform var(--ky-ease);
}

.page-about__tl-item[data-open="true"] .page-about__tl-toggle::after {
  transform: rotate(45deg);
}

.page-about__tl-detail {
  display: none;
  margin-top: 0.8rem;
  padding: 0.9rem 1rem;
  background: var(--ky-fog);
  border-radius: 8px;
  border-left: 3px solid var(--ky-gold);
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--ky-ink);
}

.page-about__tl-item[data-open="true"] .page-about__tl-detail {
  display: block;
}

.page-about__history-figure img,
.page-about__team-figure img,
.page-about__map img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about__history-figure {
  margin: 0.5rem 0 0;
}

.page-about__history-figure img {
  border-radius: var(--about-card-round);
  box-shadow: var(--ky-shadow-card);
}

.page-about__history-figure figcaption,
.page-about__team-figure figcaption {
  margin-top: 0.65rem;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--ky-ink);
  opacity: 0.65;
  font-family: var(--ky-font-mono);
}

/* ---------- 03 数据体系 ---------- */
.page-about__data {
  position: relative;
  background:
    radial-gradient(circle at 85% 15%, rgba(79, 195, 247, 0.12), transparent 40%),
    linear-gradient(145deg, #0d2c5e 0%, #081b3d 80%);
  color: var(--ky-fog);
}

.page-about__data .ky-section-title {
  color: #fff;
}

.page-about__data .ky-section-label {
  color: var(--ky-gold);
}

.page-about__data-panel {
  display: grid;
  gap: var(--ky-space-4);
  align-items: center;
  margin-bottom: var(--ky-space-5);
}

.page-about__ring {
  position: relative;
  width: min(280px, 72vw);
  aspect-ratio: 1;
  margin-inline: auto;
  border-radius: 50%;
  background: conic-gradient(
    var(--ky-gold) 0 72%,
    var(--ky-glacier) 72% 89%,
    var(--ky-red) 89% 100%
  );
  display: grid;
  place-items: center;
}

.page-about__ring::before {
  content: "";
  position: absolute;
  inset: 11%;
  border-radius: 50%;
  background: var(--about-deep-alt);
  box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.25);
}

.page-about__ring-center {
  position: relative;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0.2rem;
  padding: 28% 18%;
}

.page-about__ring-num {
  font-family: var(--ky-font-mono);
  font-size: clamp(1.2rem, 3vw, 1.75rem);
  font-weight: 800;
  color: var(--ky-gold);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-about__ring-cap {
  font-size: 0.72rem;
  color: rgba(245, 247, 250, 0.75);
  letter-spacing: 0.12em;
}

.page-about__data-list {
  display: grid;
}

.page-about__data-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.72rem 0;
  border-bottom: 1px solid rgba(226, 232, 240, 0.18);
}

.page-about__data-key {
  color: rgba(245, 247, 250, 0.72);
  font-size: 0.88rem;
}

.page-about__data-val {
  font-family: var(--ky-font-mono);
  font-weight: 700;
  color: #fff;
  font-size: 0.9rem;
  text-align: right;
  letter-spacing: 0.02em;
}

.page-about__map {
  position: relative;
  margin: var(--ky-space-4) 0 0;
  border-radius: var(--about-card-round);
  border: 1px solid rgba(226, 232, 240, 0.18);
  background: var(--about-deep-alt);
  padding-bottom: 0.75rem;
}

.page-about__map img {
  border-radius: var(--about-card-round) var(--about-card-round) 0 0;
}

.page-about__map figcaption {
  padding: 0.85rem 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: rgba(245, 247, 250, 0.78);
  line-height: 1.6;
}

.page-about__map-node {
  position: absolute;
  display: grid;
  place-items: center;
  gap: 5px;
  cursor: default;
  text-decoration: none;
}

.page-about__map-node i {
  width: 11px;
  height: 11px;
  background: var(--ky-gold);
  border: 2px solid #fff;
  border-radius: 50%;
  display: block;
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.22);
}

.page-about__map-node b {
  background: rgba(10, 31, 68, 0.9);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 3px 7px;
  border-radius: 99px;
  font-family: var(--ky-font-mono);
  white-space: nowrap;
  border: 1px solid rgba(201, 162, 39, 0.4);
}

.page-about__map-node em {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 190px;
  background: var(--ky-deep-blue);
  color: #fff;
  padding: 7px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-style: normal;
  line-height: 1.55;
  text-align: center;
  border: 1px solid rgba(201, 162, 39, 0.35);
  box-shadow: var(--ky-shadow-hover);
}

.page-about__map-node em::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--ky-deep-blue);
}

@media (hover: hover) {
  .page-about__map-node {
    transition: transform var(--ky-ease);
  }

  .page-about__map-node:hover {
    transform: scale(1.12);
  }

  .page-about__map-node:hover em {
    display: block;
  }
}

/* ---------- 04 团队构成 ---------- */
.page-about__team-grid {
  display: grid;
  gap: var(--ky-space-3);
}

.page-about__team-card {
  background: var(--ky-fog);
  border-radius: var(--about-card-round);
  padding: 1.5rem;
  border: 1px solid var(--ky-silver);
  border-top: 3px solid var(--ky-gold);
  box-shadow: var(--ky-shadow-card);
  transition: transform var(--ky-ease), box-shadow var(--ky-ease);
}

.page-about__team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ky-shadow-hover);
}

.page-about__team-icon {
  display: inline-grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--ky-deep-blue);
  color: var(--ky-gold);
  margin-bottom: 0.85rem;
}

.page-about__team-card h3 {
  font-size: 1.05rem;
  color: var(--ky-deep-blue);
  margin: 0 0 0.4rem;
}

.page-about__team-card p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ky-ink);
  opacity: 0.8;
  margin: 0;
}

.page-about__team-figure {
  margin: var(--ky-space-4) 0 0;
}

.page-about__team-figure img {
  border-radius: var(--about-card-round);
  box-shadow: var(--ky-shadow-card);
}

/* ---------- 05 合作与荣誉 ---------- */
.page-about__honor-grid {
  display: grid;
  gap: 1.25rem;
}

.page-about__honor-card {
  perspective: 1200px;
}

.page-about__honor-inner {
  position: relative;
  height: 240px;
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.page-about__honor-card:hover .page-about__honor-inner,
.page-about__honor-card:focus-within .page-about__honor-inner {
  transform: rotateY(180deg);
}

.page-about__honor-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  padding: 1.6rem;
  border-radius: var(--about-card-round);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.55rem;
  border: 1px solid var(--ky-silver);
  background: var(--ky-fog);
}

.page-about__honor-face--front h3 {
  font-size: 1.08rem;
  color: var(--ky-deep-blue);
  margin: 0.2rem 0 0;
}

.page-about__honor-face--front p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ky-ink);
  opacity: 0.78;
  margin: 0;
}

.page-about__honor-face--back {
  transform: rotateY(180deg);
  background: linear-gradient(145deg, #0d2c5e, #0a1f44);
  color: var(--ky-fog);
  text-align: center;
  border-color: rgba(201, 162, 39, 0.3);
}

.page-about__honor-face--back strong {
  font-family: var(--ky-font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: var(--ky-gold);
  letter-spacing: -0.02em;
}

.page-about__honor-face--back p {
  font-size: 0.85rem;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.8);
  margin: 0;
}

.page-about__coop {
  margin-top: var(--ky-space-5);
  padding: 1.8rem 2rem;
  background: linear-gradient(120deg, rgba(201, 162, 39, 0.1), rgba(201, 162, 39, 0.03));
  border: 1px solid var(--about-gold-line);
  border-radius: var(--about-card-round);
}

.page-about__coop h3 {
  font-size: 1.1rem;
  color: var(--ky-deep-blue);
  margin: 0 0 0.5rem;
}

.page-about__coop p {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ky-ink);
  opacity: 0.85;
  margin: 0;
}

.page-about__trust {
  margin: var(--ky-space-5) 0 0;
  padding: 1.8rem 2rem;
  background: linear-gradient(120deg, rgba(201, 162, 39, 0.14), rgba(201, 162, 39, 0.03));
  border-left: 4px solid var(--ky-gold);
  border-radius: 0 var(--ky-radius) var(--ky-radius) 0;
}

.page-about__trust p {
  margin: 0;
  color: var(--ky-ink);
  font-size: 1rem;
  line-height: 1.85;
}

.page-about__next {
  margin-top: var(--ky-space-4);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-about__mission-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about__team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about__honor-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 760px) {
  .page-about__content-grid {
    grid-template-columns: minmax(220px, 0.65fr) minmax(0, 1.35fr);
    gap: var(--ky-space-6);
    align-items: start;
  }

  .page-about__section-head {
    grid-template-columns: minmax(220px, 0.8fr) minmax(200px, 0.5fr);
    align-items: end;
    gap: var(--ky-space-5);
  }

  .page-about__data-panel {
    grid-template-columns: minmax(200px, 260px) 1fr;
    gap: var(--ky-space-5);
  }

  .page-about__ring {
    width: 100%;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about__hero-frame {
    padding: var(--ky-space-6) var(--ky-space-5);
  }

  .page-about__hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(240px, 0.7fr);
    gap: var(--ky-space-5);
  }

  .page-about__mission-text {
    font-size: 1.1rem;
  }

  .page-about__mission-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about__honor-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1040px) {
  /* 时间轴左文右版式 */
  .page-about__timeline-wrap {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
    gap: var(--ky-space-6);
  }

  .page-about__history-figure {
    position: sticky;
    top: 6rem;
    margin-top: var(--ky-space-4);
  }

  .page-about__timeline::before {
    display: none;
  }

  .page-about__tl-item {
    grid-template-columns: minmax(200px, 0.75fr) minmax(0, 1.25fr);
    column-gap: var(--ky-space-4);
  }

  .page-about__tl-meta {
    padding-left: 0;
    justify-self: end;
    text-align: right;
    padding-right: 1.75rem;
    border-right: 2px solid var(--about-gold-line);
  }

  .page-about__tl-meta::before {
    left: auto;
    right: -7px;
    top: 1rem;
  }

  .page-about__tl-item:nth-child(even) .page-about__tl-meta {
    order: 2;
    justify-self: start;
    text-align: left;
    padding-right: 0;
    padding-left: 1.75rem;
    border-right: none;
    border-left: 2px solid var(--about-gold-line);
  }

  .page-about__tl-item:nth-child(even) .page-about__tl-meta::before {
    left: -7px;
    right: auto;
  }

  .page-about__tl-item:nth-child(even) .page-about__tl-body {
    order: 1;
  }

  .page-about__tl-item:nth-child(even) .page-about__tl-toggle {
    justify-content: flex-start;
  }
}

@media (min-width: 1240px) {
  .page-about__hero-title {
    font-size: 3rem;
  }

  .page-about__tl-body {
    padding: 1.6rem 1.8rem;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about__honor-inner {
    transition: none;
    transform: none !important;
  }

  .page-about__ring {
    transition: none;
  }

  .page-about__map-node:hover,
  .page-about__mission-card:hover,
  .page-about__team-card:hover {
    transform: none;
  }
}