.page-about {
  --about-rail-w: 208px;
  --about-gap-x: clamp(24px, 3.6vw, 56px);
  --about-gap-y: clamp(34px, 5vw, 68px);
  --about-line: rgba(28, 87, 68, 0.85);
  overflow-x: clip;
}

/* ---------- 外壳栅格 ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap-y) var(--about-gap-x);
  padding-bottom: clamp(40px, 6vw, 80px);
}

@media (min-width: 1080px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }
}

.page-about .about-flow {
  min-width: 0;
}

/* ---------- 左侧赛季刻度 ---------- */
.page-about .about-rail {
  min-width: 0;
}

@media (min-width: 1080px) {
  .page-about .about-rail {
    position: sticky;
    top: 150px;
    align-self: start;
    border-left: 1px solid var(--about-line);
    padding-left: 18px;
  }
}

.page-about .about-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .season-scale {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .season-scale::-webkit-scrollbar {
  display: none;
}

@media (min-width: 1080px) {
  .page-about .season-scale {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }
}

.page-about .season-node {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 14px;
  border: 1px solid var(--about-line);
  border-radius: var(--pill);
  background: rgba(10, 42, 32, 0.4);
  white-space: nowrap;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease;
}

@media (min-width: 1080px) {
  .page-about .season-node {
    border-radius: var(--radius-sm);
    white-space: normal;
  }
}

.page-about .season-node-idx {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .season-node-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: var(--mist);
  transition: color 160ms ease;
}

.page-about .season-node:hover,
.page-about .season-node:focus-visible {
  border-color: var(--cyan);
  background: rgba(54, 241, 205, 0.12);
}

.page-about .season-node:hover .season-node-label,
.page-about .season-node:focus-visible .season-node-label {
  color: var(--bone);
}

.page-about .season-node:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-about:has(#season-1:target) .season-node[href="#season-1"],
.page-about:has(#season-2:target) .season-node[href="#season-2"],
.page-about:has(#season-3:target) .season-node[href="#season-3"],
.page-about:has(#season-4:target) .season-node[href="#season-4"] {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about:has(#season-1:target) .season-node[href="#season-1"] .season-node-idx,
.page-about:has(#season-2:target) .season-node[href="#season-2"] .season-node-idx,
.page-about:has(#season-3:target) .season-node[href="#season-3"] .season-node-idx,
.page-about:has(#season-4:target) .season-node[href="#season-4"] .season-node-idx,
.page-about:has(#season-1:target) .season-node[href="#season-1"] .season-node-label,
.page-about:has(#season-2:target) .season-node[href="#season-2"] .season-node-label,
.page-about:has(#season-3:target) .season-node[href="#season-3"] .season-node-label,
.page-about:has(#season-4:target) .season-node[href="#season-4"] .season-node-label {
  color: var(--ink);
}

.page-about .about-rail-note {
  margin: 14px 0 0;
  font-family: var(--font-body);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(12px, 2.4vw, 28px);
}

.page-about h1 {
  margin: 12px 0 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6vw, 62px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--bone);
}

.page-about .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: end;
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(24px, 3.6vw, 48px);
  }
}

.page-about .hero-lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-family: var(--font-body);
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 1.85;
  color: var(--bone);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 20px;
  margin: clamp(30px, 4.5vw, 52px) 0 0;
  padding-top: 26px;
  border-top: 1px solid var(--about-line);
}

@media (min-width: 780px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .hero-stat {
  min-width: 0;
}

.page-about .hero-stat dt {
  margin: 0 0 9px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .hero-stat dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.1vw, 25px);
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .hero-stat .num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1.12em;
  color: var(--cyan);
}

/* ---------- 图片容器 ---------- */
.page-about .about-frame {
  margin: 0;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-deep);
}

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

.page-about .about-frame--hero img {
  aspect-ratio: 7 / 5;
}

.page-about .about-frame--band {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-frame--band img {
  aspect-ratio: 8 / 3;
}

.page-about .about-frame--archive img {
  aspect-ratio: 10 / 7;
}

@media (max-width: 700px) {
  .page-about .about-frame--band img {
    aspect-ratio: 4 / 3;
  }
}

/* ---------- 章节标题与正文 ---------- */
.page-about .about-h2 {
  margin: 12px 0 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-about .prose {
  margin-top: 20px;
  max-width: 66ch;
}

.page-about .prose p {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  color: var(--bone);
}

.page-about .prose p + p {
  margin-top: 18px;
}

/* ---------- 班次表格 ---------- */
.page-about .table-shell {
  margin-top: 30px;
  border-radius: var(--radius-md);
  background: var(--paper-green);
  overflow-x: auto;
  overflow-y: hidden;
}

.page-about .shift-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
}

.page-about .shift-table thead th {
  padding: 14px 18px;
  background: var(--ink);
  color: var(--cyan);
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: left;
  white-space: nowrap;
}

.page-about .shift-table tbody th,
.page-about .shift-table tbody td {
  padding: 15px 18px;
  border-bottom: 1px solid rgba(15, 61, 46, 0.16);
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  font-weight: 400;
}

.page-about .shift-table tbody th {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  white-space: nowrap;
}

.page-about .shift-table tbody tr {
  transition: background-color 200ms ease;
}

.page-about .shift-table tbody tr:hover {
  background: rgba(54, 241, 205, 0.18);
}

.page-about .shift-table tbody tr:last-child th,
.page-about .shift-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 赛季时间轴 ---------- */
.page-about .season-track {
  list-style: none;
  position: relative;
  margin: 34px 0 0;
  padding: 0 0 0 26px;
}

.page-about .season-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--about-line);
}

.page-about .season-item {
  position: relative;
  padding-bottom: 32px;
  scroll-margin-top: 160px;
}

.page-about .season-item:last-child {
  padding-bottom: 0;
}

.page-about .season-dot {
  position: absolute;
  left: -26px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(54, 241, 205, 0.14);
  transition: background-color 200ms ease, box-shadow 200ms ease;
}

.page-about .season-item:target .season-dot {
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 107, 53, 0.22);
}

.page-about .season-meta {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .season-body h3 {
  margin: 9px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .season-body p {
  margin: 10px 0 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--bone);
}

/* ---------- 生产流程 ---------- */
.page-about .flow-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

@media (min-width: 760px) {
  .page-about .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 26px;
  }

  .page-about .flow-step:nth-child(even) {
    margin-top: 26px;
  }

  .page-about .flow-step:nth-child(5) {
    grid-column: 1 / -1;
    margin-top: 26px;
  }
}

.page-about .flow-step {
  padding: 22px 22px 24px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  background: rgba(10, 42, 32, 0.55);
  transition: border-color 200ms ease, transform 200ms ease;
}

.page-about .flow-step:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .flow-idx {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .flow-step h3 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .flow-step p {
  margin: 9px 0 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--bone);
}

/* ---------- 档案区 ---------- */
.page-about .archive-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 26px;
}

@media (min-width: 880px) {
  .page-about .archive-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
    gap: clamp(24px, 4vw, 46px);
  }
}

.page-about .archive-copy {
  margin-top: 0;
}

/* ---------- 合作入口 ---------- */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 30px;
  align-items: start;
}

@media (min-width: 760px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 24px;
  }

  .page-about .partner-card:nth-child(even) {
    margin-top: 22px;
  }
}

.page-about .partner-card {
  display: block;
  padding: 24px 24px 22px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  background: rgba(10, 42, 32, 0.6);
  text-decoration: none;
  transition: border-color 200ms ease, transform 200ms ease;
}

.page-about .partner-card:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}

.page-about .partner-card:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-about .partner-kicker {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .partner-card h3 {
  margin: 11px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .partner-card p {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .partner-go {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: var(--cyan);
  transition: color 160ms ease;
}

.page-about .partner-card:hover .partner-go {
  color: var(--orange);
}

.page-about .partner-note {
  margin: 30px 0 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .partner-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(54, 241, 205, 0.4);
  transition: border-color 160ms ease, color 160ms ease;
}

.page-about .partner-note a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .contact-line {
  font-family: var(--font-data);
  color: var(--bone);
  letter-spacing: 0.02em;
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .season-node,
  .page-about .season-dot,
  .page-about .flow-step,
  .page-about .partner-card,
  .page-about .partner-go,
  .page-about .shift-table tbody tr {
    transition: none;
  }

  .page-about .flow-step:hover,
  .page-about .partner-card:hover {
    transform: none;
  }
}