/* ================================================================
   品牌故事 · page-about
   页面专属样式，全部限定在 .page-about 作用域内
   ================================================================ */

.page-about {
  --about-node: var(--green);
  --about-node-hi: var(--orange);
}

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

/* ---------------- 首屏 ---------------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 18px 0 30px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -130px;
  left: -25%;
  width: 150%;
  height: 540px;
  background:
    linear-gradient(115deg, rgba(255, 106, 26, 0.18) 0%, rgba(255, 106, 26, 0) 52%),
    linear-gradient(295deg, rgba(46, 123, 246, 0.16) 0%, rgba(46, 123, 246, 0) 58%);
  clip-path: polygon(0 0, 100% 0, 86% 100%, 0 66%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
}

.page-about .about-hero__title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(29px, 7.2vw, 56px);
  line-height: 1.07;
  letter-spacing: -0.012em;
  color: var(--paper);
  margin: 12px 0 16px;
  max-width: 16ch;
}

.page-about .about-hero__lead {
  max-width: 48ch;
  color: var(--paper-dim);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
}

.page-about .about-hero__media {
  border-left: 4px solid var(--orange);
}

.page-about .about-hero__media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------------- 规模数字条 ---------------- */

.page-about .about-scale {
  padding: 6px 0 0;
}

.page-about .scale-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.page-about .scale-cell {
  background: var(--panel);
  padding: 18px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .scale-cell .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -0.01em;
}

.page-about .scale-cell .unit {
  font-size: 0.55em;
  margin-left: 0.08em;
  color: var(--orange-soft);
}

.page-about .scale-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ---------------- 页内章节导航 ---------------- */

.page-about .about-anchor {
  margin-top: 26px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}

.page-about .about-anchor__list {
  list-style: none;
  margin: 0;
  padding: 10px 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-anchor__list a {
  display: inline-block;
  white-space: nowrap;
  padding: 6px 12px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--paper-dim);
  text-decoration: none;
  transition: border-color var(--dur) ease, color var(--dur) ease,
    background-color var(--dur) ease;
}

.page-about .about-anchor__list a:hover,
.page-about .about-anchor__list a:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 106, 26, 0.12);
  color: var(--paper);
}

/* ---------------- 章节骨架 ---------------- */

.page-about .about-section {
  padding: 46px 0 4px;
}

.page-about .about-section .section-head {
  max-width: 68ch;
}

.page-about .about-section .section-title {
  font-size: clamp(23px, 4.3vw, 34px);
  line-height: 1.2;
}

.page-about .about-section .lead {
  color: var(--paper-dim);
  margin-top: 12px;
}

/* ---------------- 时间轴 ---------------- */

.page-about .timeline {
  list-style: none;
  margin: 26px 0 0;
  padding: 2px 0 10px;
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

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

.page-about .timeline__item {
  flex: 0 0 84%;
  min-width: 0;
  scroll-snap-align: start;
  position: relative;
  padding-top: 34px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 0;
  right: 16px;
  height: 2px;
  background: linear-gradient(90deg, var(--moss) 0%, var(--line) 100%);
}

.page-about .timeline__item::after {
  content: "";
  position: absolute;
  top: 13px;
  left: 0;
  width: 15px;
  height: 15px;
  background: var(--about-node);
  border: 2px solid var(--ink);
  box-shadow: 0 0 0 2px var(--line);
}

.page-about .timeline__card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--moss);
  padding: 20px 18px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--dur) ease, border-color var(--dur) ease,
    box-shadow var(--dur) ease;
}

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

.page-about .timeline__item:hover .timeline__card,
.page-about .timeline__item:focus-within .timeline__card {
  transform: translateY(-2px);
  border-color: var(--line);
  border-left-color: var(--orange);
  box-shadow: var(--shadow-hard);
}

.page-about .timeline__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink);
  background: var(--about-node);
  padding: 3px 8px;
  margin-bottom: 12px;
}

.page-about .timeline__item:hover .timeline__year,
.page-about .timeline__item:focus-within .timeline__year {
  background: var(--about-node-hi);
  color: var(--ink);
}

.page-about .timeline__title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.34;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-about .timeline__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .timeline__note {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--moss);
}

/* ---------------- 球队档案 ---------------- */

.page-about .archive__grid {
  display: grid;
  gap: 24px;
}

.page-about .archive__media {
  border-right: 4px solid var(--blue);
}

.page-about .archive__media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .archive__text {
  font-size: 16px;
  line-height: 1.85;
  color: var(--paper-dim);
  margin: 14px 0 0;
  max-width: 60ch;
}

.page-about .archive__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .archive__list li {
  background: var(--panel-2);
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .archive__list strong {
  display: inline-block;
  min-width: 4.2em;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue-soft);
  font-weight: 600;
}

.page-about .archive__link {
  margin: 22px 0 0;
}

/* ---------------- 数据团队 ---------------- */

.page-about .team__grid {
  display: grid;
  gap: 22px;
  margin-top: 26px;
}

.page-about .team__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .role-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--moss);
  padding: 16px 16px 18px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--dur) ease, border-color var(--dur) ease;
}

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

.page-about .role-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .role-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .role-card--data {
  border-top-color: var(--orange);
}

.page-about .role-card--write {
  border-top-color: var(--blue);
}

.page-about .role-card--tool {
  border-top-color: var(--clay);
}

.page-about .role-card--check {
  border-top-color: var(--green);
}

.page-about .team__media {
  border-bottom: 4px solid var(--moss);
}

.page-about .team__media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------------- 合作与专刊 ---------------- */

.page-about .partner-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.page-about .pblock {
  padding: 20px 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  min-width: 0;
  transition: transform var(--dur) ease, box-shadow var(--dur) ease;
}

.page-about .pblock:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.page-about .pblock h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .pblock p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .pblock__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 10px;
}

.page-about .pblock--media {
  background: rgba(76, 154, 91, 0.12);
  border-color: rgba(76, 154, 91, 0.45);
  transform: translateY(0);
}

.page-about .pblock--media .pblock__num {
  color: var(--green);
}

.page-about .pblock--fans {
  background: rgba(255, 106, 26, 0.1);
  border-color: rgba(255, 106, 26, 0.42);
}

.page-about .pblock--fans .pblock__num {
  color: var(--orange);
}

.page-about .pblock--journal {
  background: rgba(46, 123, 246, 0.1);
  border-color: rgba(46, 123, 246, 0.42);
}

.page-about .pblock--journal .pblock__num {
  color: var(--blue);
}

.page-about .pblock--wide {
  grid-column: span 2;
  background: var(--panel-2);
  border-left: 4px solid var(--clay);
}

.page-about .pblock__link {
  margin: 16px 0 0;
}

/* ---------------- 版本演进 ---------------- */

.page-about .about-steps {
  display: block;
  width: 100%;
  height: auto;
  margin: 30px 0 0;
  overflow: visible;
}

.page-about .about-steps polyline {
  fill: none;
  stroke: var(--orange);
  stroke-width: 2;
  stroke-linejoin: miter;
}

.page-about .about-steps circle {
  fill: var(--ink);
  stroke: var(--moss);
  stroke-width: 2;
}

.page-about .about-steps circle.is-last {
  fill: var(--orange);
  stroke: var(--orange);
}

.page-about .steps-legend {
  list-style: none;
  margin: 22px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .steps-legend::-webkit-scrollbar {
  display: none;
}

.page-about .steps-legend li {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--paper-dim);
  white-space: nowrap;
}

.page-about .steps-legend__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

.page-about .versions__tail {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------------- 收尾 ---------------- */

.page-about .about-cta {
  margin-top: 56px;
  border-top: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(255, 106, 26, 0.12) 0%, rgba(255, 106, 26, 0) 55%),
    var(--panel-2);
}

.page-about .about-cta__inner {
  padding: 46px 0 52px;
  position: relative;
  overflow: hidden;
}

.page-about .about-cta__inner::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -50px;
  width: 220px;
  height: 220px;
  background: rgba(46, 123, 246, 0.14);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-cta__title {
  position: relative;
  z-index: 1;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(22px, 4.4vw, 34px);
  line-height: 1.18;
  color: var(--paper);
  margin: 12px 0 12px;
  max-width: 22ch;
}

.page-about .about-cta__text {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .about-cta__links {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

/* ---------------- 窄屏兜底 ---------------- */

@media (max-width: 400px) {
  .page-about .scale-strip {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .partner-blocks {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .pblock--wide {
    grid-column: span 1;
  }

  .page-about .timeline__item {
    flex: 0 0 92%;
  }
}

/* ---------------- 平板 ---------------- */

@media (min-width: 680px) {
  .page-about .scale-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .scale-cell .stat-num {
    font-size: 34px;
  }

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

  .page-about .about-steps {
    margin-top: 38px;
  }

  .page-about .about-cta__inner {
    padding: 58px 0 64px;
  }
}

/* ---------------- 桌面 ---------------- */

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 34px 0 46px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.06fr 0.94fr;
    gap: 44px;
    align-items: end;
  }

  .page-about .about-hero__media {
    transform: translateY(22px);
  }

  .page-about .about-scale {
    padding-top: 10px;
  }

  .page-about .about-section {
    padding: 74px 0 10px;
  }

  /* 时间轴：竖向，卡片左右错位 */
  .page-about .timeline {
    display: block;
    overflow: visible;
    position: relative;
    padding: 4px 0 0;
    margin-top: 42px;
  }

  .page-about .timeline::before {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 12px;
    left: 7px;
    width: 2px;
    background: linear-gradient(180deg, var(--green) 0%, var(--moss) 40%, var(--line) 100%);
  }

  .page-about .timeline__item {
    flex: none;
    display: block;
    max-width: 700px;
    padding: 0 0 0 56px;
    margin-bottom: 20px;
  }

  .page-about .timeline__item::before {
    display: none;
  }

  .page-about .timeline__item::after {
    top: 26px;
    left: 0;
  }

  .page-about .timeline__item:nth-child(even) {
    margin-left: 96px;
  }

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

  .page-about .timeline__card {
    padding: 24px 26px;
  }

  .page-about .timeline__title {
    font-size: 22px;
  }

  /* 球队档案：图左文右，图向下错位 */
  .page-about .archive__grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .archive__media {
    transform: translateY(28px);
  }

  .page-about .archive__copy {
    padding-top: 6px;
  }

  /* 团队：左列表右图 */
  .page-about .team__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 34px;
    align-items: start;
  }

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

  .page-about .team__media {
    margin-top: 26px;
  }

  /* 合作色块：不规则比例 */
  .page-about .partner-blocks {
    grid-template-columns: 1.1fr 0.9fr 1.2fr;
    grid-auto-rows: minmax(0, auto);
    gap: 14px;
  }

  .page-about .pblock--media {
    transform: translateY(0);
  }

  .page-about .pblock--fans {
    transform: translateY(20px);
  }

  .page-about .pblock--journal {
    transform: translateY(8px);
  }

  .page-about .pblock--wide {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1.4fr auto;
    align-items: center;
    gap: 22px;
    margin-top: 26px;
    padding: 22px 26px;
  }

  .page-about .pblock--wide h3 {
    margin: 0;
    font-size: 20px;
  }

  .page-about .pblock--wide .pblock__link {
    margin: 0;
  }

  .page-about .about-steps {
    margin-top: 46px;
  }

  .page-about .steps-legend {
    flex-wrap: wrap;
    overflow: visible;
  }

  .page-about .about-cta {
    margin-top: 80px;
  }

  .page-about .about-cta__inner {
    padding: 72px 0 80px;
  }

  .page-about .about-cta__inner::after {
    width: 320px;
    height: 320px;
    right: -40px;
  }
}

@media (min-width: 1180px) {
  .page-about .timeline__item:nth-child(even) {
    margin-left: 140px;
  }

  .page-about .about-hero__inner {
    gap: 64px;
  }
}

/* ---------------- 减少动态 ---------------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__card,
  .page-about .role-card,
  .page-about .pblock,
  .page-about .about-anchor__list a {
    transition: none;
  }

  .page-about .timeline__item:hover .timeline__card,
  .page-about .timeline__item:focus-within .timeline__card,
  .page-about .role-card:hover,
  .page-about .pblock:hover {
    transform: none;
  }

  .page-about .about-hero__media,
  .page-about .archive__media,
  .page-about .pblock--fans,
  .page-about .pblock--journal {
    transform: none;
  }
}