.page-about {
  --about-card: rgba(11, 31, 25, 0.72);
  --about-line: rgba(147, 167, 155, 0.18);
  --about-line-mid: rgba(147, 167, 155, 0.32);
  background: var(--c-ink);
  color: var(--c-paper);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .about-crumb-bar {
  padding-top: 1.1rem;
  padding-bottom: 0.2rem;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.82rem;
  color: var(--c-mist);
}

.page-about .breadcrumb a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s, border-color 0.18s;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--c-lime);
  border-color: var(--c-lime);
  outline: none;
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--c-lime-soft);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 1.6rem 0 3.4rem;
  background:
    radial-gradient(120% 78% at 84% 0%, rgba(200, 255, 61, 0.1), transparent 62%),
    linear-gradient(162deg, var(--c-green) 0%, var(--c-ink) 56%, var(--c-black) 100%);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: linear-gradient(90deg, var(--c-lime) 0 30%, var(--c-orange) 30% 52%, transparent 52%);
  transform: skewY(-0.5deg);
  transform-origin: left bottom;
  opacity: 0.9;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: end;
}

.page-about .about-eyebrow {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-lime);
}

.page-about .about-hero-copy h1 {
  margin: 0.7rem 0 0;
  font-size: clamp(2.3rem, 8vw, 4.6rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--c-paper);
}

.page-about .about-lede {
  margin: 1.1rem 0 0;
  max-width: 38em;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(238, 245, 234, 0.8);
}

.page-about .about-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.page-about .about-hero-board {
  background: var(--c-glass);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  padding: 1.3rem 1.2rem 0.9rem;
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(8px);
}

.page-about .about-board-title {
  margin: 0 0 0.6rem;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--c-mist);
}

.page-about .about-board-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-board-list li {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  padding: 0.62rem 0;
  border-bottom: 1px dashed var(--about-line);
}

.page-about .about-board-list li:last-child {
  border-bottom: 0;
}

.page-about .about-board-list .num {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-lime);
}

.page-about .about-board-list .unit {
  font-size: 0.72rem;
  color: var(--c-mist);
  transform: translateY(-0.5em);
}

.page-about .about-board-label {
  margin-left: auto;
  font-size: 0.82rem;
  color: var(--c-mist);
  text-align: right;
}

/* ---------- 吸顶索引 ---------- */

.page-about .about-anchors {
  position: sticky;
  top: var(--header-h);
  z-index: 20;
  background: rgba(10, 11, 10, 0.9);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  backdrop-filter: blur(10px);
}

.page-about .about-anchors-list {
  display: flex;
  gap: 0.3rem;
  margin: 0;
  padding: 0.5rem 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-anchors-list::-webkit-scrollbar {
  display: none;
}

.page-about .about-anchors-list a {
  display: inline-block;
  white-space: nowrap;
  padding: 0.4rem 0.82rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.84rem;
  color: var(--c-mist);
  text-decoration: none;
  transition: color 0.18s, background 0.18s, border-color 0.18s;
}

.page-about .about-anchors-list a:hover,
.page-about .about-anchors-list a:focus-visible {
  color: var(--c-ink);
  background: var(--c-lime);
  border-color: var(--c-lime);
  outline: none;
}

/* ---------- 区块骨架 ---------- */

.page-about .about-section {
  padding: 3.2rem 0;
}

.page-about .about-section-band {
  position: relative;
  background: linear-gradient(180deg, var(--c-green) 0%, rgba(20, 52, 42, 0.5) 100%);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-band-stripe {
  height: 6px;
  margin-bottom: 1.8rem;
  background: linear-gradient(90deg, var(--c-lime) 0 24%, var(--c-orange) 24% 44%, transparent 44%);
  transform: skewY(-0.6deg);
  opacity: 0.85;
}

.page-about .about-section-head {
  max-width: 44rem;
  margin-bottom: 2rem;
}

.page-about .about-section-head h2 {
  margin: 0.55rem 0 0;
  font-size: clamp(1.6rem, 4.6vw, 2.5rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
}

.page-about .about-two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

.page-about .about-team-prose p {
  margin: 0 0 1.05rem;
  line-height: 1.85;
  color: rgba(238, 245, 234, 0.82);
}

/* ---------- 岗位构成条块 ---------- */

.page-about .about-compose {
  padding: 1.3rem 1.2rem 1.1rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: var(--about-card);
  box-shadow: var(--shadow-panel);
}

.page-about .about-compose-title {
  margin: 0 0 1.1rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--c-lime-soft);
}

.page-about .about-compose-row {
  margin-bottom: 1rem;
  transition: transform 0.18s;
}

.page-about .about-compose-row:hover {
  transform: translateY(-2px);
}

.page-about .about-compose-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.86rem;
  color: var(--c-paper);
  margin-bottom: 0.45rem;
}

.page-about .about-compose-head .num {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-lime);
}

.page-about .about-compose-track {
  height: 12px;
  border-radius: 999px;
  background: rgba(147, 167, 155, 0.14);
  overflow: hidden;
}

.page-about .about-compose-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
}

.page-about .about-compose-fill-core {
  width: 33.3%;
  background: linear-gradient(90deg, var(--c-lime), var(--c-lime-soft));
}

.page-about .about-compose-fill-rest {
  width: 66.7%;
  background: linear-gradient(90deg, var(--c-orange), var(--c-caramel));
}

.page-about .about-compose-note {
  margin: 1.1rem 0 0;
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--c-mist);
}

/* ---------- 数据流程 ---------- */

.page-about .about-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.8rem;
}

.page-about .about-figure {
  margin: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--about-line);
  object-fit: cover;
  background: var(--c-green);
}

.page-about .about-figure-cap {
  margin-top: 0.7rem;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--c-mist);
}

.page-about .about-flow-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-flow-steps li:last-child {
  border-bottom: 0;
}

.page-about .about-flow-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-orange);
  padding-top: 0.2rem;
}

.page-about .about-flow-steps h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--c-paper);
}

.page-about .about-flow-steps p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(238, 245, 234, 0.72);
}

/* ---------- 班次对比 ---------- */

.page-about .about-shift {
  margin-top: 2rem;
  padding: 1.3rem 1.2rem 1.1rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: var(--c-glass);
}

.page-about .about-shift-title {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--c-lime-soft);
}

.page-about .about-shift-row {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr);
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.72rem;
}

.page-about .about-shift-name {
  font-size: 0.84rem;
  color: var(--c-mist);
}

.page-about .about-shift-bar {
  display: block;
  height: 12px;
  border-radius: 999px;
  transition: transform 0.18s;
}

.page-about .about-shift-row:hover .about-shift-bar {
  transform: translateY(-2px);
}

.page-about .about-shift-bar-am {
  width: 58%;
  background: linear-gradient(90deg, var(--c-lime), rgba(230, 255, 176, 0.35));
}

.page-about .about-shift-bar-pm {
  width: 88%;
  background: linear-gradient(90deg, var(--c-orange), rgba(122, 58, 18, 0.5));
}

.page-about .about-shift-note {
  margin: 1rem 0 0;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--c-mist);
}

/* ---------- 时间线 ---------- */

.page-about .about-tl-figure {
  margin-bottom: 2.4rem;
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-lime), var(--c-orange) 55%, var(--about-line-mid));
}

.page-about .about-tl-item {
  position: relative;
  padding: 0 0 2.1rem 2rem;
  outline: none;
}

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-ink);
  border: 2px solid var(--c-lime);
  transition: background 0.18s, box-shadow 0.18s;
}

.page-about .about-tl-item:hover::before,
.page-about .about-tl-item:focus-visible::before {
  background: var(--c-lime);
  box-shadow: 0 0 0 6px rgba(200, 255, 61, 0.16);
}

.page-about .about-tl-item:focus-visible {
  outline: 2px solid var(--c-lime);
  outline-offset: 6px;
  border-radius: var(--radius-sm);
}

.page-about .about-tl-year {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.4rem;
}

.page-about .about-tl-year .num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-lime);
}

.page-about .about-tl-phase {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--c-mist);
  border: 1px solid var(--about-line-mid);
  border-radius: 999px;
  padding: 0.08rem 0.52rem;
}

.page-about .about-tl-body h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--c-paper);
}

.page-about .about-tl-body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.82;
  color: rgba(238, 245, 234, 0.74);
}

/* ---------- 版本 ---------- */

.page-about .about-version-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.2rem;
  align-items: start;
}

.page-about .about-version-copy h2 {
  margin: 0.55rem 0 0;
  font-size: clamp(1.6rem, 4.6vw, 2.5rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
}

.page-about .about-version-lede {
  margin: 1rem 0 0;
  line-height: 1.85;
  color: rgba(238, 245, 234, 0.8);
}

.page-about .about-version-track {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
  margin: 1.6rem 0 0.7rem;
}

.page-about .about-version-track span {
  flex: 1 1 0;
  min-width: 0;
  height: 34px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--c-lime), rgba(200, 255, 61, 0.14));
  transform: skewX(-8deg);
}

.page-about .about-version-track span:last-child {
  background: linear-gradient(180deg, var(--c-orange), rgba(255, 122, 47, 0.16));
}

.page-about .about-version-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--c-mist);
}

.page-about .about-version-points {
  margin: 1.3rem 0 1.6rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.page-about .about-version-points li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.92rem;
  line-height: 1.72;
  color: rgba(238, 245, 234, 0.78);
}

.page-about .about-version-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--c-orange);
}

.page-about .about-version-figure {
  max-width: 34rem;
}

/* ---------- 一天 ---------- */

.page-about .about-day-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-about .about-day-card {
  padding: 1.25rem 1.1rem 1.15rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: var(--about-card);
  transition: transform 0.18s, border-color 0.18s;
}

.page-about .about-day-card:hover {
  transform: translateY(-2px);
  border-color: rgba(200, 255, 61, 0.5);
}

.page-about .about-day-time {
  display: inline-block;
  margin-bottom: 0.6rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: rgba(255, 122, 47, 0.14);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--c-orange);
}

.page-about .about-day-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--c-paper);
}

.page-about .about-day-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: rgba(238, 245, 234, 0.72);
}

/* ---------- 收尾 ---------- */

.page-about .about-closing {
  padding: 3rem 0 3.6rem;
  background: linear-gradient(140deg, var(--c-green) 0%, var(--c-black) 100%);
  border-top: 1px solid var(--about-line);
}

.page-about .about-closing-inner {
  max-width: 46rem;
}

.page-about .about-closing h2 {
  margin: 0;
  font-size: clamp(1.5rem, 4.4vw, 2.2rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.page-about .about-closing p {
  margin: 1rem 0 0;
  line-height: 1.85;
  color: rgba(238, 245, 234, 0.8);
}

/* ---------- 媒体查询 ---------- */

@media (min-width: 700px) {
  .page-about .about-section {
    padding: 4rem 0;
  }

  .page-about .about-day-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 2.4rem 0 4.2rem;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 3rem;
  }

  .page-about .about-section {
    padding: 5rem 0;
  }

  .page-about .about-section-head {
    margin-bottom: 2.6rem;
  }

  .page-about .about-two-col {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
    gap: 3.2rem;
    align-items: start;
  }

  .page-about .about-flow {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 2.8rem;
    align-items: start;
  }

  .page-about .about-version-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 3.2rem;
  }

  .page-about .about-version-figure {
    justify-self: end;
    width: 100%;
  }
}

@media (min-width: 860px) {
  .page-about .about-timeline::before {
    left: 128px;
  }

  .page-about .about-tl-item {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 2.4rem;
    padding: 0 0 2.6rem 0;
  }

  .page-about .about-tl-item::before {
    left: 122px;
    top: 0.5rem;
  }

  .page-about .about-tl-year {
    flex-direction: column;
    align-items: flex-end;
    gap: 0.24rem;
    margin-bottom: 0;
    padding-right: 1.6rem;
    text-align: right;
  }

  .page-about .about-tl-body {
    padding-top: 0.05rem;
  }
}

@media (min-width: 1100px) {
  .page-about .about-day-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl-item::before,
  .page-about .about-day-card,
  .page-about .about-compose-row,
  .page-about .about-shift-bar,
  .page-about .breadcrumb a,
  .page-about .about-anchors-list a {
    transition: none;
  }

  .page-about .about-day-card:hover,
  .page-about .about-compose-row:hover,
  .page-about .about-shift-row:hover .about-shift-bar {
    transform: none;
  }
}