.page-about {
  --tl-mark: 54px;
  --card-gap: 12px;
}

@media (min-width: 900px) {
  .page-about {
    --tl-mark: 136px;
    --card-gap: 16px;
  }
}

/* ---------- 面包屑 ---------- */
.page-about .crumb {
  margin-top: 22px;
  margin-bottom: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}

.page-about .crumb a {
  color: var(--dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .crumb a:hover,
.page-about .crumb a:focus-visible {
  color: var(--pulse);
}

/* ---------- 框景首屏 ---------- */
.page-about .story-hero {
  padding-top: 22px;
}

.page-about .story-hero__frame {
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
  padding: 0;
  background:
    radial-gradient(120% 88% at 88% 6%, rgba(57, 255, 136, 0.07), transparent 58%),
    linear-gradient(158deg, var(--ink-2) 0%, var(--ink-1) 66%, var(--ink-0) 100%);
}

.page-about .story-hero__text {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px 20px 26px;
}

.page-about .story-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--dim);
}

.page-about .story-hero h1 {
  margin: 0;
  font-size: clamp(2.6rem, 9vw, 4.8rem);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .story-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: 0.98rem;
  line-height: 1.78;
  color: var(--dim);
}

.page-about .story-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

/* ---------- 媒体框统一处理 ---------- */
.page-about .story-hero__media,
.page-about .flow__media,
.page-about .hunan__media {
  position: relative;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: var(--ink-1);
}

.page-about .story-hero__media img,
.page-about .flow__media img,
.page-about .hunan__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .story-hero__media .media-frame__overlay,
.page-about .flow__media .media-frame__overlay,
.page-about .hunan__media .media-frame__overlay {
  position: absolute;
  inset: auto 0 0 0;
  margin: 0;
  padding: 12px 16px;
  background: linear-gradient(0deg, rgba(6, 9, 13, 0.96), rgba(6, 9, 13, 0));
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  color: var(--dim);
}

.page-about .story-hero__media {
  aspect-ratio: 16 / 11;
}

.page-about .flow__media {
  aspect-ratio: 16 / 10;
  margin-bottom: 18px;
}

.page-about .hunan__media {
  aspect-ratio: 3 / 2;
}

@media (min-width: 960px) {
  .page-about .story-hero__frame {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .story-hero__text {
    padding: 48px 40px 44px 42px;
    justify-content: center;
  }

  .page-about .story-hero__media {
    aspect-ratio: auto;
    min-height: 420px;
    height: 100%;
  }
}

@media (min-width: 900px) {
  .page-about .flow__media {
    aspect-ratio: 21 / 8;
    margin-bottom: 22px;
  }

  .page-about .hunan__media {
    aspect-ratio: 4 / 5;
    align-self: start;
  }
}

/* ---------- 首屏数据条 ---------- */
.page-about .story-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
}

.page-about .story-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--ink-1);
}

.page-about .story-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 4vw, 1.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--text);
}

.page-about .story-hero__unit {
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: var(--dim);
}

@media (min-width: 760px) {
  .page-about .story-hero__stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- 章节节奏 ---------- */
.page-about .story-chapter,
.page-about .crew,
.page-about .flow,
.page-about .hunan,
.page-about .partner,
.page-about .story-cta {
  padding-top: 46px;
  padding-bottom: 6px;
}

@media (min-width: 900px) {
  .page-about .story-chapter,
  .page-about .crew,
  .page-about .flow,
  .page-about .hunan,
  .page-about .partner,
  .page-about .story-cta {
    padding-top: 72px;
    padding-bottom: 8px;
  }
}

.page-about .section-head {
  margin-bottom: 22px;
}

.page-about .section-head::after {
  content: "";
  display: block;
  width: 42px;
  height: 2px;
  margin-top: 14px;
  background: linear-gradient(90deg, var(--pulse), rgba(57, 255, 136, 0));
}

.page-about .section-head__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--pulse);
  opacity: 0.85;
}

.page-about .section-head h2 {
  margin: 8px 0 0;
  font-size: clamp(1.55rem, 4.6vw, 2.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .prose p {
  margin: 0 0 14px;
  max-width: 68ch;
  font-size: 0.96rem;
  line-height: 1.78;
  color: var(--dim);
}

.page-about .prose p:last-child {
  margin-bottom: 0;
}

/* ---------- 竖直时间线 ---------- */
.page-about .story-line {
  position: relative;
  display: grid;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .story-line::before {
  content: "";
  position: absolute;
  top: 16px;
  bottom: 16px;
  left: calc(var(--tl-mark) / 2);
  width: 1px;
  background: linear-gradient(180deg, var(--line) 0%, var(--ink-3) 74%, rgba(30, 41, 52, 0) 100%);
}

.page-about .story-stop {
  display: grid;
  grid-template-columns: var(--tl-mark) 1fr;
  gap: 12px;
  align-items: start;
}

.page-about .story-stop__mark {
  position: relative;
  padding-top: 30px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: var(--dim);
  transition: color 0.25s ease;
}

.page-about .story-stop__mark::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 50%;
  width: 9px;
  height: 9px;
  margin-left: -4.5px;
  border-radius: 50%;
  background: var(--ink-0);
  border: 1px solid var(--line);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .story-stop:hover .story-stop__mark,
.page-about .story-stop:focus-within .story-stop__mark {
  color: var(--text);
}

.page-about .story-stop:hover .story-stop__mark::before,
.page-about .story-stop:focus-within .story-stop__mark::before {
  background: var(--pulse);
  border-color: var(--pulse);
  box-shadow: 0 0 0 5px rgba(57, 255, 136, 0.1);
}

.page-about .story-stop__body {
  padding: 16px 16px 18px;
  background: var(--ink-1);
}

.page-about .story-stop__body h3 {
  margin: 10px 0 8px;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .story-stop__body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--dim);
}

@media (min-width: 900px) {
  .page-about .story-line {
    gap: 30px;
  }

  .page-about .story-stop {
    gap: 26px;
  }

  .page-about .story-stop__mark {
    font-size: 0.78rem;
  }

  .page-about .story-stop__body {
    padding: 20px 22px 22px;
  }
}

/* ---------- 团队编制面板 ---------- */
.page-about .crew__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--card-gap);
}

.page-about .crew__card {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--ink-1);
  border: 1px solid var(--line);
  clip-path: var(--cut-md);
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.page-about .crew__card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 32px;
  background: var(--cool);
  transition: height 0.35s ease, background 0.35s ease;
}

.page-about .crew__card:hover,
.page-about .crew__card:focus-within {
  background: var(--ink-2);
  border-color: #3b5164;
  transform: translateY(-3px);
}

.page-about .crew__card:hover::after,
.page-about .crew__card:focus-within::after {
  height: 100%;
  background: var(--pulse);
}

.page-about .crew__count {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0;
}

.page-about .crew__n {
  font-family: var(--font-mono);
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
  transition: color 0.25s ease;
}

.page-about .crew__card:hover .crew__n,
.page-about .crew__card:focus-within .crew__n {
  color: var(--pulse);
}

.page-about .crew__u {
  font-size: 0.78rem;
  color: var(--dim);
}

.page-about .crew__role {
  margin: 12px 0 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .crew__desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--dim);
}

@media (min-width: 640px) {
  .page-about .crew__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-about .crew__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- 制作流程横滑 ---------- */
.page-about .flow__steps {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 76%;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0 0 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-3) transparent;
}

.page-about .flow__step {
  scroll-snap-align: start;
  padding: 16px 16px 18px;
  background: var(--ink-1);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cool);
  clip-path: var(--cut-sm);
}

.page-about .flow__time {
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cool);
}

.page-about .flow__step h3 {
  margin: 12px 0 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .flow__step p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--dim);
}

@media (min-width: 900px) {
  .page-about .flow__steps {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-columns: auto;
    gap: 16px;
    overflow: visible;
    padding-bottom: 0;
  }
}

/* ---------- 湖南覆盖 ---------- */
.page-about .hunan__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-about .hunan__ledger {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
}

.page-about .hunan__ledger > div {
  padding: 12px 12px 14px;
  background: var(--ink-1);
}

.page-about .hunan__ledger dt {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--dim);
}

.page-about .hunan__ledger dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
}

@media (min-width: 900px) {
  .page-about .hunan__split {
    grid-template-columns: 7fr 5fr;
    gap: 34px;
    align-items: start;
  }
}

/* ---------- 合作生态 ---------- */
.page-about .partner__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--cut-md);
}

.page-about .partner__item {
  padding: 18px 18px 20px;
  background: var(--ink-1);
}

.page-about .partner__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1;
  color: var(--pulse);
}

.page-about .partner__item h3 {
  margin: 10px 0 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .partner__item p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--dim);
}

.page-about .partner__honor {
  display: grid;
  gap: 8px;
  margin-top: 16px;
  padding: 18px 20px;
  background: linear-gradient(120deg, var(--pulse-deep) 0%, var(--ink-1) 66%);
  border-color: rgba(57, 255, 136, 0.24);
}

.page-about .partner__honor-title {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .partner__honor-desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--dim);
}

@media (min-width: 900px) {
  .page-about .partner__list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .partner__item {
    padding: 22px 20px 24px;
  }
}

/* ---------- 收束 ---------- */
.page-about .story-cta {
  padding-bottom: 56px;
}

.page-about .story-cta__panel {
  display: grid;
  gap: 14px;
  padding: 28px 22px 30px;
  background:
    linear-gradient(120deg, rgba(57, 255, 136, 0.09), rgba(57, 255, 136, 0) 62%),
    var(--ink-2);
}

.page-about .story-cta__panel h2 {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--text);
}

.page-about .story-cta__panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--dim);
}

.page-about .story-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

@media (min-width: 900px) {
  .page-about .story-cta__panel {
    padding: 38px 36px 40px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .crew__card,
  .page-about .crew__card::after,
  .page-about .crew__n,
  .page-about .story-stop__mark,
  .page-about .story-stop__mark::before,
  .page-about .crumb a {
    transition: none;
  }

  .page-about .crew__card:hover,
  .page-about .crew__card:focus-within {
    transform: none;
  }
}