.page-about {
  background: var(--deep);
  color: var(--mist);
  overflow-x: hidden;
}

.page-about .num,
.page-about .hero-fact__num,
.page-about .fn-code,
.page-about .fn-scale,
.page-about .flow-num,
.page-about .prod-idx,
.page-about .timeline-year,
.page-about .next-link__idx {
  font-family: var(--font-mono);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(1.75rem, 4vw, 3rem) 0 clamp(2rem, 5vw, 3.5rem);
  background:
    radial-gradient(60% 80% at 88% 8%, rgba(53, 242, 196, 0.09) 0%, transparent 70%),
    linear-gradient(178deg, var(--deep) 0%, var(--deep-lift) 62%, var(--deep) 100%);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 74, 58, 0.42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 74, 58, 0.42) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 82%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 82%);
  pointer-events: none;
}

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

.page-about .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  margin-top: 1.75rem;
}

.page-about .hero-lead h1 {
  margin: 0.6rem 0 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(2rem, 6.2vw, 3.9rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-about .hero-lead .lede {
  margin-top: 1.25rem;
  max-width: 52ch;
  font-size: clamp(1rem, 2.2vw, 1.125rem);
  line-height: 1.75;
  color: rgba(232, 243, 238, 0.78);
}

.page-about .hero-panel {
  align-self: start;
  padding: 1.35rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 69, 47, 0.5);
  box-shadow: var(--shadow-soft);
}

.page-about .hero-panel__label {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .hero-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .hero-facts li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 0.75rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .hero-facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .hero-fact__num {
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .hero-fact__unit {
  margin-left: 0.2rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 400;
  color: rgba(232, 243, 238, 0.6);
}

.page-about .hero-fact__name {
  font-size: 0.82rem;
  line-height: 1.5;
  color: rgba(232, 243, 238, 0.7);
}

.page-about .hero-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.6rem;
  margin-top: 2.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line-soft);
}

.page-about .hero-jump a {
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  font-size: 0.8rem;
  color: rgba(232, 243, 238, 0.72);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .hero-jump a:hover,
.page-about .hero-jump a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 章节通用 ---------- */

.page-about .section {
  position: relative;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.page-about .section--roles {
  background: var(--deep);
}

.page-about .section--ops {
  background:
    linear-gradient(180deg, rgba(13, 53, 41, 0.85) 0%, var(--deep) 100%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .section--editorial {
  background: var(--deep);
}

.page-about .section--season {
  background:
    radial-gradient(70% 60% at 12% 0%, rgba(47, 107, 255, 0.08) 0%, transparent 68%),
    var(--deep-lift);
  border-top: 1px solid var(--line-soft);
}

.page-about .section--growth {
  background: var(--deep);
  border-top: 1px solid var(--line-soft);
}

.page-about .section--next {
  background:
    linear-gradient(180deg, var(--deep) 0%, rgba(18, 69, 47, 0.9) 100%);
  border-top: 1px solid var(--line-soft);
}

.page-about .section-head {
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .section-head--left {
  margin-bottom: 1.75rem;
}

.page-about .section-heading {
  margin: 0.5rem 0 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.4rem, 4vw, 1.95rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .section-head .lede {
  margin-top: 0.9rem;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(232, 243, 238, 0.74);
}

.page-about .note {
  font-size: 0.81rem;
  line-height: 1.7;
  color: var(--slate);
}

.page-about .note--after {
  margin: 1.35rem 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--gridline);
  max-width: 60ch;
  color: rgba(232, 243, 238, 0.5);
}

/* ---------- 职能分工 ---------- */

.page-about .fn-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .fn-item {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: 0.5rem 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line-soft);
  transition: background 0.2s var(--ease);
}

.page-about .fn-code {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 0.3rem;
}

.page-about .fn-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--mist);
}

.page-about .fn-body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: rgba(232, 243, 238, 0.72);
}

.page-about .fn-scale {
  grid-column: 2;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--gold);
}

/* ---------- 运营中心 ---------- */

.page-about .ops-figure {
  margin: 0 0 clamp(1.75rem, 4vw, 2.75rem);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--deep-mid);
}

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

.page-about .media__caption {
  padding: 0.85rem 1rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--slate);
  border-top: 1px solid var(--line-soft);
  background: rgba(10, 43, 34, 0.6);
}

.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .flow-step {
  padding: 1.35rem 1.25rem;
  background: var(--deep);
}

.page-about .flow-num {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue);
  margin-bottom: 0.6rem;
}

.page-about .flow-step h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--mist);
}

.page-about .flow-step p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(232, 243, 238, 0.68);
}

/* ---------- 专栏生产 ---------- */

.page-about .editorial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .prod {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.4rem;
  border-left: 1px solid var(--gridline);
}

.page-about .prod-step {
  position: relative;
  padding-bottom: 1.6rem;
}

.page-about .prod-step:last-child {
  padding-bottom: 0;
}

.page-about .prod-step::before {
  content: "";
  position: absolute;
  left: calc(-1.4rem - 4px);
  top: 0.5rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--deep);
  border: 1.5px solid var(--cyan);
}

.page-about .prod-idx {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin-bottom: 0.4rem;
}

.page-about .prod-step h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--mist);
}

.page-about .prod-step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(232, 243, 238, 0.7);
}

.page-about .editorial-side {
  display: grid;
  gap: 1.5rem;
}

.page-about .editorial-side .media {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--deep-mid);
}

.page-about .side-note {
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--gold);
  border-radius: var(--radius);
  background: rgba(18, 69, 47, 0.45);
}

.page-about .side-note__label {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .side-note p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: rgba(232, 243, 238, 0.7);
}

.page-about .side-note__link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.84rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 196, 0.4);
  transition: border-color 0.2s var(--ease);
}

.page-about .side-note__link:hover,
.page-about .side-note__link:focus-visible {
  border-color: var(--cyan);
}

/* ---------- 赛季节奏 ---------- */

.page-about .season-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .season-card {
  padding: 1.5rem 1.25rem;
  background: var(--deep);
}

.page-about .season-card--pre {
  background: linear-gradient(180deg, rgba(47, 107, 255, 0.12) 0%, var(--deep) 70%);
}

.page-about .season-card--in {
  background: linear-gradient(180deg, rgba(53, 242, 196, 0.1) 0%, var(--deep) 70%);
}

.page-about .season-card--off {
  background: linear-gradient(180deg, rgba(242, 193, 78, 0.1) 0%, var(--deep) 70%);
}

.page-about .season-kicker {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .season-card--off .season-kicker {
  color: var(--gold);
}

.page-about .season-card h3 {
  margin: 0 0 0.9rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--mist);
}

.page-about .season-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.page-about .season-list li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(232, 243, 238, 0.7);
}

.page-about .season-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 1px;
  background: var(--gridline);
}

.page-about .season-figure {
  margin: 0 auto;
  max-width: 520px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--deep-mid);
}

/* ---------- 团队成长 ---------- */

.page-about .growth-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
}

.page-about .timeline-item {
  display: grid;
  grid-template-columns: 4.2rem minmax(0, 1fr);
  gap: 1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
}

.page-about .timeline-year {
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
  padding-top: 0.18rem;
}

.page-about .timeline-body h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--mist);
}

.page-about .timeline-body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(232, 243, 238, 0.7);
}

.page-about .growth-side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .side-note--box {
  border-left-width: 2px;
  border-left-color: var(--cyan);
  background: rgba(18, 69, 47, 0.38);
}

.page-about .side-note--box .side-note__label {
  color: var(--cyan);
}

/* ---------- 延伸入口 ---------- */

.page-about .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .next-lead .lede {
  margin-top: 0.9rem;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(232, 243, 238, 0.74);
  max-width: 46ch;
}

.page-about .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .next-link {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: 0.3rem 0.9rem;
  padding: 1.15rem 1.15rem;
  background: var(--deep);
  text-decoration: none;
  transition: background 0.2s var(--ease);
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  background: var(--deep-mid);
}

.page-about .next-link__idx {
  grid-row: 1 / span 2;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 0.2rem;
}

.page-about .next-link__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--mist);
}

.page-about .next-link__desc {
  font-size: 0.83rem;
  line-height: 1.65;
  color: rgba(232, 243, 238, 0.66);
}

/* ---------- 显现动效 ---------- */

.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}

.page-about [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 平板 ---------- */

@media (min-width: 720px) {
  .page-about .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .season-card:last-child {
    grid-column: 1 / -1;
  }

  .page-about .editorial-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-about .growth-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 980px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    gap: 3.5rem;
    align-items: end;
  }

  .page-about .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .season-card:last-child {
    grid-column: auto;
  }

  .page-about .fn-item {
    grid-template-columns: 3.4rem minmax(0, 1fr) 7.5rem;
    gap: 2rem;
    align-items: start;
    padding: 1.9rem 0;
  }

  .page-about .fn-scale {
    grid-column: 3;
    grid-row: 1;
    text-align: right;
    padding-top: 0.3rem;
  }

  .page-about .fn-item:hover {
    background: rgba(18, 69, 47, 0.28);
  }

  .page-about .next-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    gap: 3.5rem;
    align-items: center;
  }
}
<<<END>>>