.page-about {
  --rail-w: 224px;
  --chapter-gap: clamp(48px, 7vw, 88px);
  --about-line: rgba(110, 122, 136, .24);
  display: block;
  background: var(--bg-deep);
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
}

.page-about a:focus-visible {
  outline: 2px solid var(--gold-lit);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: calc(var(--hdr-rail) + var(--hdr-main) + clamp(34px, 6vw, 74px));
  background:
    radial-gradient(120% 70% at 50% -12%, rgba(123, 92, 224, .26), transparent 62%),
    radial-gradient(72% 52% at 6% 112%, rgba(201, 162, 74, .14), transparent 70%),
    var(--bg-deep);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero__inner {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}

.page-about .about-hero__inner .breadcrumb {
  justify-content: center;
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--stone);
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(32px, 5.2vw, 60px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--ivory);
  text-shadow: 0 0 20px rgba(201, 162, 74, .2);
}

.page-about .about-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) auto 0;
  max-width: 720px;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.95;
  color: rgba(242, 237, 227, .78);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(30px, 4.4vw, 52px) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  text-align: left;
}

.page-about .about-hero__facts li {
  background: rgba(18, 38, 63, .74);
  padding: 15px 16px;
}

.page-about .about-hero__fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.3;
  color: var(--gold-lit);
  letter-spacing: .01em;
}

.page-about .about-hero__fact-label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--stone);
}

.page-about .about-hero__media {
  position: relative;
  margin: clamp(34px, 5vw, 68px) 0 0;
  border-top: 1px solid var(--line-gold);
  background: var(--bg-void);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: clamp(200px, 32vw, 440px);
  object-fit: cover;
  opacity: .8;
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 22, 38, .88), rgba(10, 22, 38, .06) 44%, rgba(10, 22, 38, .96));
  pointer-events: none;
}

/* ---------- 双栏骨架 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 44px);
  padding-top: clamp(44px, 6.5vw, 88px);
  padding-bottom: clamp(52px, 7vw, 96px);
}

/* ---------- 左侧章节刻度 ---------- */
.page-about .about-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 14px;
}

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

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0 9px 14px;
  border-left: 1px solid var(--about-line);
  font-size: 14px;
  line-height: 1.5;
  color: rgba(242, 237, 227, .62);
  text-decoration: none;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--gold-lit);
  border-left-color: var(--gold-lit);
}

.page-about .about-rail__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--gold);
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  position: relative;
  padding-top: var(--chapter-gap);
  scroll-margin-top: calc(var(--hdr-rail) + var(--hdr-main) + 24px);
}

.page-about .about-chapter:first-child {
  padding-top: 0;
}

.page-about .about-chapter + .about-chapter::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--line-gold), rgba(110, 122, 136, .16) 58%, transparent);
}

.page-about .about-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
}

.page-about .about-chapter__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(201, 162, 74, .38);
}

@supports (-webkit-text-stroke: 1px red) {
  .page-about .about-chapter__num {
    color: transparent;
    -webkit-text-stroke: 1px rgba(201, 162, 74, .6);
  }
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-about .about-text {
  max-width: 66ch;
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(242, 237, 227, .8);
}

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

.page-about .about-inline-link {
  color: var(--violet-lit);
  text-decoration: none;
  border-bottom: 1px solid rgba(167, 148, 240, .5);
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}

.page-about .about-inline-link:hover {
  color: var(--gold-lit);
  border-bottom-color: var(--gold-lit);
}

/* ---------- 三个固定点 ---------- */
.page-about .about-pillars {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-pillar {
  background: var(--bg-panel-2);
  border-top: 2px solid rgba(201, 162, 74, .45);
  padding: 20px 20px 18px;
  transition: border-top-color var(--t-fast) ease, background var(--t-fast) ease;
}

.page-about .about-pillar:hover {
  border-top-color: var(--gold-lit);
  background: var(--bg-panel);
}

.page-about .about-pillar__k {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold-lit);
}

.page-about .about-pillar__v {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .76);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line-gold);
}

.page-about .about-team__total {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-team__num {
  font-family: var(--font-mono);
  font-size: clamp(44px, 7vw, 72px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold-lit);
}

.page-about .about-team__unit {
  font-size: 15px;
  color: var(--stone);
}

.page-about .about-team__caption {
  flex: 1 1 220px;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--stone);
}

.page-about .about-team__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "label val"
    "bar bar"
    "desc desc";
  gap: 8px 12px;
  padding: 15px 0;
  border-top: 1px solid var(--about-line);
  transition: background var(--t-fast) ease;
}

.page-about .about-team__row:last-child {
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-team__label {
  grid-area: label;
  font-size: 15px;
  color: var(--ivory);
}

.page-about .about-team__val {
  grid-area: val;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.6;
  color: var(--stone);
  transition: color var(--t-fast) ease;
}

.page-about .about-team__bar {
  grid-area: bar;
  position: relative;
  height: 6px;
  background: rgba(110, 122, 136, .18);
  overflow: hidden;
}

.page-about .about-team__bar i {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  background: linear-gradient(90deg, var(--gold), var(--violet));
  transition: filter var(--t-fast) ease;
}

.page-about .about-team__desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

.page-about .about-team__row--edit { --w: 41.4%; }
.page-about .about-team__row--research { --w: 19%; }
.page-about .about-team__row--frontend { --w: 29.3%; }
.page-about .about-team__row--support { --w: 10.3%; }

.page-about .about-team__row:hover {
  background: rgba(18, 38, 63, .6);
}

.page-about .about-team__row:hover .about-team__val {
  color: var(--gold-lit);
}

.page-about .about-team__row:hover .about-team__bar i {
  filter: brightness(1.4);
}

/* ---------- 流程步骤 ---------- */
.page-about .about-steps {
  position: relative;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .about-step {
  position: relative;
  padding: 0 0 24px 52px;
}

.page-about .about-step::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 32px;
  bottom: 0;
  width: 1px;
  background: var(--about-line);
}

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

.page-about .about-step:last-child::before {
  display: none;
}

.page-about .about-step__idx {
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
  border: 1px solid rgba(224, 138, 60, .5);
  background: rgba(224, 138, 60, .1);
  transition: color var(--t-fast) ease, background var(--t-fast) ease, border-color var(--t-fast) ease;
}

.page-about .about-step:hover .about-step__idx,
.page-about .about-step:focus-within .about-step__idx {
  color: var(--bg-deep);
  background: var(--gold-lit);
  border-color: var(--gold-lit);
}

.page-about .about-step__title {
  margin: 4px 0 6px;
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ivory);
}

.page-about .about-step__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(242, 237, 227, .74);
}

.page-about .about-step__out {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss-lit);
  transition: max-height var(--t-base) ease, opacity var(--t-base) ease, margin-top var(--t-base) ease;
}

.page-about .about-step__out b {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-about .about-step:hover .about-step__out,
.page-about .about-step:focus-within .about-step__out {
  max-height: 140px;
  opacity: 1;
  margin-top: 10px;
}

.page-about .about-figure {
  margin: 32px 0 0;
  background: var(--bg-void);
  border: 1px solid var(--about-line);
  border-top: 2px solid var(--gold);
}

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

.page-about .about-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--about-line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 赛季年表 ---------- */
.page-about .about-timeline {
  position: relative;
  margin-top: 30px;
  border-top: 1px solid var(--about-line);
  overflow: hidden;
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-about .about-timeline__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .16;
}

.page-about .about-tl {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-tl__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 20px 16px;
  border-top: 1px solid rgba(110, 122, 136, .2);
  transition: background var(--t-fast) ease;
}

.page-about .about-tl__item:first-child {
  border-top: 0;
}

.page-about .about-tl__item:hover {
  background: rgba(10, 22, 38, .74);
}

.page-about .about-tl__year {
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.4vw, 28px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--gold);
}

.page-about .about-tl__tag {
  display: inline-block;
  margin: 0 0 8px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--violet-lit);
  border: 1px solid rgba(123, 92, 224, .55);
  background: rgba(123, 92, 224, .1);
}

.page-about .about-tl__title {
  margin: 0 0 6px;
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.55;
  color: var(--ivory);
}

.page-about .about-tl__text {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .72);
}

.page-about .about-tl__item--now {
  background: rgba(123, 92, 224, .07);
  box-shadow: inset 2px 0 0 var(--gold-lit);
}

/* ---------- 老玩家回归 ---------- */
.page-about .about-return__steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-return__step {
  background: var(--bg-panel-2);
  padding: 22px 20px;
}

.page-about .about-return__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.3;
  color: var(--violet-lit);
}

.page-about .about-return__title {
  margin: 6px 0 8px;
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.55;
  color: var(--ivory);
}

.page-about .about-return__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .74);
}

.page-about .about-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-about .about-chip {
  padding: 6px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ivory);
  border: 1px solid rgba(201, 162, 74, .42);
  background: rgba(201, 162, 74, .08);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  padding: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-partner {
  background: var(--bg-panel);
  border-top: 2px solid transparent;
  padding: 24px 22px;
  transition: border-top-color var(--t-fast) ease, background var(--t-fast) ease;
}

.page-about .about-partner--arcade { border-top-color: rgba(169, 97, 74, .6); }
.page-about .about-partner--studio { border-top-color: rgba(123, 92, 224, .6); }
.page-about .about-partner--hardware { border-top-color: rgba(79, 122, 92, .7); }

.page-about .about-partner:hover {
  background: var(--bg-panel-2);
  border-top-color: var(--gold-lit);
}

.page-about .about-partner__count {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.3;
  color: var(--gold-lit);
}

.page-about .about-partner__name {
  margin: 6px 0 8px;
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ivory);
}

.page-about .about-partner__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .74);
}

/* ---------- 荣誉 ---------- */
.page-about .about-highlight {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin: 0;
  padding: 20px 22px;
  border-left: 2px solid var(--gold);
  background: linear-gradient(90deg, rgba(201, 162, 74, .15), rgba(10, 22, 38, 0) 72%);
}

.page-about .about-highlight__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold-lit);
}

.page-about .about-highlight__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .8);
}

.page-about .about-honors {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-honor {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 18px;
  border-left: 2px solid var(--clay);
  background: rgba(169, 97, 74, .09);
}

.page-about .about-honor__k {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--clay-lit);
}

.page-about .about-honor__v {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(242, 237, 227, .8);
}

/* ---------- 下一步 ---------- */
.page-about .about-chapter--next {
  padding-bottom: 0;
}

.page-about .about-next {
  display: grid;
  gap: 1px;
  margin-top: 4px;
  padding: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-next__link {
  display: block;
  padding: 20px 22px;
  background: var(--bg-panel-2);
  text-decoration: none;
  transition: background var(--t-fast) ease;
}

.page-about .about-next__link:hover {
  background: var(--bg-panel);
}

.page-about .about-next__label {
  display: block;
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ivory);
  transition: color var(--t-fast) ease;
}

.page-about .about-next__label::after {
  content: "→";
  display: inline-block;
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--gold);
  transform: translateX(0);
  transition: transform var(--t-fast) ease;
}

.page-about .about-next__link:hover .about-next__label {
  color: var(--gold-lit);
}

.page-about .about-next__link:hover .about-next__label::after {
  transform: translateX(4px);
}

.page-about .about-next__desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-team__row {
    grid-template-columns: 158px 60px minmax(0, 1fr) minmax(0, 240px);
    grid-template-areas: "label val bar desc";
    align-items: center;
    gap: 14px;
    padding: 16px 0;
  }

  .page-about .about-tl__item {
    grid-template-columns: 156px minmax(0, 1fr);
    gap: 26px;
    padding: 24px 20px;
  }

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

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

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

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

@media (min-width: 1080px) {
  .page-about .about-body {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--hdr-rail) + var(--hdr-main) + 32px);
    align-self: start;
  }

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

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

@media (max-width: 767px) {
  .page-about {
    font-size: 15px;
  }

  .page-about .about-step__out {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
  }

  .page-about .about-chapter__head {
    gap: 10px;
  }

  .page-about .about-highlight {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }

  .page-about .about-next__label::after {
    transform: none !important;
  }
}