.page-about {
  --about-ink: var(--c-ink);
  --about-night: var(--c-night);
  --about-paper: var(--c-paper);
  --about-lime: var(--c-lime);
  --about-gold: var(--c-gold);
  --about-white: var(--c-white);
  --about-charcoal: var(--c-charcoal);
  --about-line: rgba(176, 196, 222, 0.18);
  --about-card: linear-gradient(145deg, rgba(13, 43, 82, 0.92) 0%, rgba(11, 30, 58, 0.76) 100%);
  position: relative;
  background: var(--about-ink);
  color: var(--about-white);
  overflow-x: clip;
}

.page-about .eyebrow {
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--about-lime);
  margin-bottom: 12px;
}

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

/* ========== Hero ========== */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-total) + 48px) 0 96px;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(13, 43, 82, 0.9), transparent 60%),
    linear-gradient(135deg, rgba(198, 255, 0, 0.07) 0%, transparent 45%),
    var(--about-ink);
  clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
}

.page-about .about-hero::after {
  content: "2017—2026";
  position: absolute;
  right: -1%;
  bottom: -2%;
  z-index: 0;
  font-family: var(--font-num);
  font-weight: 900;
  font-size: clamp(4.5rem, 15vw, 13rem);
  line-height: 1;
  letter-spacing: -0.06em;
  color: rgba(198, 255, 0, 0.07);
  pointer-events: none;
}

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

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.2rem, 6vw, 5.6rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 12em;
  margin-bottom: 20px;
  color: var(--about-white);
}

.page-about .about-hero-lead {
  max-width: 640px;
  font-family: var(--font-body);
  font-size: 1.02rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.78);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 48px;
  margin-top: 56px;
}

.page-about .about-hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 16px;
  border-left: 3px solid var(--about-lime);
}

.page-about .about-hero-num {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 3rem;
  line-height: 1;
  color: var(--about-lime);
}

.page-about .about-hero-num--gold {
  color: var(--about-gold);
}

.page-about .about-hero-cap {
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  opacity: 0.65;
}

/* ========== 命名区 ========== */
.page-about .about-naming {
  position: relative;
  padding: 88px 0 72px;
  background: var(--about-paper);
  color: var(--about-charcoal);
  overflow: hidden;
}

.page-about .about-naming::before {
  content: "新利";
  position: absolute;
  right: -2%;
  top: 24px;
  z-index: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(6rem, 18vw, 16rem);
  line-height: 1;
  color: rgba(11, 30, 58, 0.05);
  pointer-events: none;
}

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

.page-about .about-naming-head {
  max-width: 720px;
}

.page-about .about-naming-head h2,
.page-about .about-timeline .section-head h2,
.page-about .about-team-copy h2,
.page-about .about-honors h2,
.page-about .about-next h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
  margin-bottom: 16px;
}

.page-about .about-naming-intro {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.85;
  color: rgba(18, 18, 18, 0.75);
}

.page-about .about-naming-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 48px;
}

.page-about .about-name-item {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(11, 30, 58, 0.08);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 8px 8px 0 rgba(11, 30, 58, 0.08);
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about .about-name-item:hover {
  transform: translate(-4px, -4px);
  box-shadow: 12px 12px 0 rgba(11, 30, 58, 0.12);
}

.page-about .about-name-char {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 3.2rem;
  line-height: 1;
  color: var(--about-ink);
  margin-bottom: 18px;
}

.page-about .about-name-item h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--about-ink);
  margin-bottom: 8px;
}

.page-about .about-name-item p {
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(18, 18, 18, 0.7);
}

.page-about .about-slogan-block {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 4px solid var(--about-gold);
}

.page-about .about-slogan-label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.78rem;
  letter-spacing: 0.5em;
  color: rgba(18, 18, 18, 0.5);
}

.page-about .about-slogan {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--about-ink);
}

/* ========== 时间轴 ========== */
.page-about .about-timeline {
  position: relative;
  padding: 88px 0;
  background:
    linear-gradient(180deg, var(--about-ink), rgba(11, 30, 58, 0.96)),
    var(--about-ink);
}

.page-about .about-timeline .section-head {
  margin-bottom: 48px;
}

.page-about .about-timeline .section-head h2 {
  color: var(--about-white);
}

.page-about .about-timeline .section-head .section-anno {
  margin-top: 8px;
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.5);
}

.page-about .timeline-wrap {
  position: relative;
}

.page-about .timeline-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 9px;
  width: 2px;
  background: linear-gradient(180deg, var(--about-lime) 0%, rgba(13, 43, 82, 0.6) 70%, transparent);
}

.page-about .timeline-item {
  position: relative;
  padding: 28px 0 48px 40px;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  top: 52px;
  left: 9px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--about-lime);
  border: 4px solid var(--about-ink);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 4px rgba(198, 255, 0, 0.18);
  transition: box-shadow var(--transition), background var(--transition);
}

.page-about .timeline-item:hover::before,
.page-about .timeline-item:focus-within::before {
  background: var(--about-gold);
  box-shadow: 0 0 0 10px rgba(198, 255, 0, 0.28);
}

.page-about .timeline-year {
  margin-bottom: 14px;
}

.page-about .timeline-year-num {
  display: block;
  white-space: nowrap;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--about-lime);
}

.page-about .timeline-year-label {
  display: block;
  margin-top: 10px;
  font-size: 0.8rem;
  letter-spacing: 0.35em;
  color: rgba(255, 255, 255, 0.5);
}

.page-about .timeline-card {
  position: relative;
  background: var(--about-card);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}

.page-about .timeline-card h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--about-white);
  margin-bottom: 14px;
}

.page-about .timeline-card p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.8);
}

.page-about .timeline-card-img {
  display: block;
  margin: 20px 0;
  background: rgba(255, 255, 255, 0.04);
}

.page-about .timeline-card-img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .timeline-data {
  display: block;
  margin-top: 18px;
  padding-top: 6px;
  border-top: 1px solid var(--about-line);
}

.page-about .timeline-data .data-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(176, 196, 222, 0.12);
}

.page-about .timeline-data .data-label {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

.page-about .timeline-data .data-value {
  font-family: var(--font-num);
  font-size: 0.95rem;
  font-weight: 700;
  text-align: right;
  color: var(--about-lime);
}

.page-about .timeline-more {
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  border-top: 1px solid var(--about-line);
  padding-top: 14px;
  margin-top: 18px;
}

@media (hover: hover) {
  .page-about .timeline-more {
    max-height: 0;
    margin-top: 0;
    padding-top: 0;
    border-top-width: 0;
    opacity: 0;
    overflow: hidden;
    transition: opacity var(--transition), max-height var(--transition), margin-top var(--transition), padding-top var(--transition), border-top-width var(--transition);
  }
  .page-about .timeline-card:hover .timeline-more,
  .page-about .timeline-card:focus-within .timeline-more {
    max-height: 120px;
    margin-top: 18px;
    padding-top: 14px;
    border-top-width: 1px;
    opacity: 1;
  }
}

/* ========== 团队 ========== */
.page-about .about-team {
  padding: 80px 0;
  background: var(--about-night);
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about .about-team-copy h2 {
  color: var(--about-white);
}

.page-about .about-team-copy p {
  font-family: var(--font-body);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 28px;
}

.page-about .about-team-bars {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 28px;
  background: rgba(11, 30, 58, 0.55);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
}

.page-about .team-bar {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-about .team-bar-label {
  flex: 0 0 96px;
  width: 96px;
  font-size: 0.85rem;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.72);
}

.page-about .team-bar-track {
  flex: 1 1 auto;
  height: 14px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.page-about .team-bar-fill {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: var(--about-lime);
}

.page-about .team-bar-value {
  flex: 0 0 42px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 0.95rem;
  text-align: right;
  color: var(--about-white);
}

/* ========== 荣誉 ========== */
.page-about .about-honors {
  position: relative;
  padding: 88px 0;
  background:
    linear-gradient(135deg, rgba(245, 197, 24, 0.08) 0%, transparent 45%),
    var(--about-ink);
}

.page-about .about-honors h2 {
  max-width: 18em;
  color: var(--about-white);
}

.page-about .about-honors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 44px;
}

.page-about .about-honor-card {
  position: relative;
  padding: 30px;
  border: 1px solid rgba(245, 197, 24, 0.4);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(245, 197, 24, 0.12) 0%, rgba(11, 30, 58, 0.8) 60%);
  transition: transform var(--transition), border-color var(--transition);
}

.page-about .about-honor-card:hover {
  transform: translateY(-6px);
  border-color: var(--about-gold);
}

.page-about .about-honor-year {
  display: block;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 2.6rem;
  color: var(--about-gold);
  margin-bottom: 18px;
}

.page-about .about-honor-card h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--about-white);
  margin-bottom: 10px;
}

.page-about .about-honor-card p {
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.65);
}

.page-about .about-trust {
  margin-top: 56px;
  padding: 28px;
  border-left: 4px solid var(--about-lime);
  background: rgba(198, 255, 0, 0.06);
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.75);
}

/* ========== 下一步 ========== */
.page-about .about-next {
  padding: 88px 0;
  background: var(--about-paper);
  color: var(--about-charcoal);
}

.page-about .about-next .eyebrow {
  color: rgba(11, 30, 58, 0.5);
}

.page-about .about-next h2 {
  color: var(--about-ink);
}

.page-about .about-next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 40px;
}

.page-about .about-next-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(11, 30, 58, 0.1);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--about-ink);
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about .about-next-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(11, 30, 58, 0.14);
}

.page-about .about-next-card-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.15rem;
}

.page-about .about-next-card-desc {
  font-family: var(--font-body);
  font-size: 0.86rem;
  line-height: 1.65;
  color: rgba(18, 18, 18, 0.62);
}

/* ========== 响应式 ========== */
@media (min-width: 720px) {
  .page-about .about-naming-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: calc(var(--header-total) + 88px) 0 140px;
  }

  .page-about .about-hero h1 {
    font-size: clamp(3rem, 7vw, 6rem);
  }

  .page-about .about-hero-stats {
    margin-top: 64px;
  }

  .page-about .about-slogan-block {
    justify-content: flex-end;
  }

  .page-about .about-timeline {
    padding: 120px 0;
  }

  .page-about .timeline-wrap {
    margin-top: 60px;
  }

  .page-about .timeline-line {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .timeline-item {
    display: flex;
    align-items: center;
    gap: 72px;
    padding: 64px 0;
  }

  .page-about .timeline-item::before {
    left: 50%;
    top: 50%;
  }

  .page-about .timeline-year,
  .page-about .timeline-card {
    flex: 0 1 50%;
    margin: 0;
  }

  .page-about .timeline-year {
    text-align: right;
    padding-right: 72px;
    margin-bottom: 0;
  }

  .page-about .timeline-item:nth-child(even) {
    flex-direction: row-reverse;
  }

  .page-about .timeline-item:nth-child(even) .timeline-year {
    text-align: left;
    padding-right: 0;
    padding-left: 72px;
  }

  .page-about .timeline-year-num {
    font-size: clamp(4rem, 9vw, 7rem);
  }

  .page-about .timeline-card {
    padding: 34px;
  }

  .page-about .about-team-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 72px;
  }

  .page-about .about-team-bars {
    padding: 40px;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation: none !important;
    transition: none !important;
  }
}