/* ===== 品牌档案 · page-about ===== */

.page-about {
  --ab-rail-w: 84px;
  --ab-gap: 26px;
  display: block;
  background: var(--pitch-deep);
  color: var(--chalk);
  overflow-x: hidden;
}

.page-about .yk-breadcrumb {
  padding-top: 20px;
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  margin-top: 18px;
  padding: 32px 0 42px;
  border-top: 2px solid var(--line-green);
  border-bottom: 2px solid var(--line-green);
  background: linear-gradient(180deg, rgba(23, 59, 43, 0.85) 0%, rgba(10, 28, 20, 0) 78%);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(44, 106, 75, 0.16) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(0deg, rgba(44, 106, 75, 0.1) 0 1px, transparent 1px 56px);
}

.page-about .ab-hero__inner {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-about .ab-hero__kicker {
  font-family: var(--ff-display);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--sand);
  margin: 0 0 12px;
}

.page-about h1 {
  font-family: var(--ff-body);
  font-size: clamp(2.05rem, 8vw, 3.9rem);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: 0.005em;
  color: var(--chalk);
  margin: 0 0 18px;
  max-width: 14ch;
}

.page-about .ab-hero__lead {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--dust);
  max-width: 44ch;
  margin: 0;
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
}

.page-about .yk-scoreboard {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 12px 14px;
  background: var(--pitch-night);
  border: 2px solid var(--line-green);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.45);
  transition: border-color var(--ease), background var(--ease);
}

.page-about .yk-scoreboard:hover {
  border-color: var(--sand);
  background: var(--pitch-mid);
}

.page-about .yk-scoreboard__label {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--dust);
  order: 2;
}

.page-about .yk-scoreboard__value {
  font-family: var(--ff-mono);
  font-size: clamp(1.25rem, 5.4vw, 2rem);
  line-height: 1.05;
  font-weight: 600;
  color: var(--sand);
  letter-spacing: -0.02em;
  order: 1;
}

.page-about .yk-scoreboard__unit {
  font-size: 0.68rem;
  color: var(--dust);
  margin-left: 3px;
  letter-spacing: 0;
}

.page-about .ab-hero__visual {
  position: relative;
  padding: 16px 16px 10px;
  background: var(--pitch-night);
  border: 2px solid var(--line-green);
  box-shadow: var(--hard-shadow);
}

.page-about .ab-hero__visual::after {
  content: "";
  position: absolute;
  top: -2px;
  right: -2px;
  width: 22px;
  height: 22px;
  background: var(--sand);
}

.page-about .ab-chart {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 长文主体：左刻度 + 右长文 ---------- */

.page-about .ab-body {
  padding: 42px 0 54px;
}

.page-about .ab-body__grid {
  display: block;
}

.page-about .ab-rail {
  display: none;
}

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

/* ---------- 章节 ---------- */

.page-about .ab-sec {
  padding-bottom: 44px;
}

.page-about .ab-sec + .ab-sec {
  border-top: 2px solid var(--line-green);
  padding-top: 44px;
}

.page-about .ab-sec__head {
  margin-bottom: 20px;
}

.page-about .ab-sec__no {
  display: block;
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--sand);
  margin-bottom: 10px;
}

.page-about .ab-sec__title {
  font-size: clamp(1.4rem, 5vw, 2.05rem);
  line-height: 1.28;
  font-weight: 700;
  color: var(--chalk);
  margin: 0;
  max-width: 24ch;
}

.page-about .ab-sec__body {
  max-width: 66ch;
  color: var(--dust);
  font-size: 1rem;
  line-height: 1.82;
}

.page-about .ab-sec__body p {
  margin: 0;
}

.page-about .ab-sec__body p + p {
  margin-top: 15px;
}

.page-about .ab-sec__body strong {
  color: var(--chalk);
  font-weight: 600;
}

/* ---------- 里程碑 ---------- */

.page-about .ab-marks {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 2px solid var(--line-green);
}

.page-about .ab-marks__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 0;
  border-bottom: 2px solid var(--pitch-mid);
  transition: background var(--ease);
}

.page-about .ab-marks__item:hover {
  background: var(--pitch-night);
}

.page-about .ab-marks__s {
  font-family: var(--ff-mono);
  font-size: 0.95rem;
  color: var(--sand);
  letter-spacing: 0.02em;
}

.page-about .ab-marks__t {
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--dust);
}

/* ---------- 岗位方块 ---------- */

.page-about .ab-roles {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .ab-role {
  padding: 16px 14px 18px;
  background: var(--pitch-night);
  border: 2px solid var(--line-green);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.42);
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}

.page-about .ab-role:hover {
  border-color: var(--sand);
  background: var(--pitch-mid);
  transform: translateY(-2px);
}

.page-about .ab-role__no {
  display: block;
  font-family: var(--ff-mono);
  font-size: 2rem;
  line-height: 1;
  color: var(--chalk);
  margin-bottom: 12px;
}

.page-about .ab-role:hover .ab-role__no {
  color: var(--sand);
}

.page-about .ab-role__name {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--sand);
  margin-bottom: 7px;
}

.page-about .ab-role__desc {
  display: block;
  font-size: 0.79rem;
  line-height: 1.65;
  color: var(--dust);
}

/* ---------- 图 ---------- */

.page-about .ab-fig {
  margin: 28px 0 30px;
}

.page-about .ab-fig--tall {
  margin-bottom: 0;
}

/* ---------- 流程线 ---------- */

.page-about .ab-pipe {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 14px;
  position: relative;
}

.page-about .ab-pipe__step {
  position: relative;
  padding-top: 30px;
}

.page-about .ab-pipe__step::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 0;
  width: 14px;
  height: 14px;
  background: var(--pitch-deep);
  border: 2px solid var(--sand);
}

.page-about .ab-pipe__step:first-child::before {
  background: var(--sand);
}

.page-about .ab-pipe__idx {
  display: block;
  font-family: var(--ff-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  color: var(--dust);
}

.page-about .ab-pipe__name {
  display: block;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--chalk);
  margin: 6px 0 8px;
}

.page-about .ab-pipe__meta {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  color: var(--sand);
  border: 1px solid var(--line-green);
  padding: 3px 8px;
  transition: border-color var(--ease), background var(--ease);
}

.page-about .ab-pipe__step:hover .ab-pipe__meta {
  border-color: var(--sand);
  background: var(--pitch-night);
}

/* ---------- 折叠注 ---------- */

.page-about .ab-note {
  margin-top: 30px;
  border: 2px solid var(--line-green);
  background: var(--pitch-night);
  max-width: 66ch;
}

.page-about .ab-note > summary {
  cursor: pointer;
  padding: 14px 18px;
  font-size: 0.9rem;
  color: var(--chalk);
  letter-spacing: 0.01em;
  list-style: none;
  transition: background var(--ease), color var(--ease);
}

.page-about .ab-note > summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-note > summary::before {
  content: "+";
  display: inline-block;
  width: 16px;
  font-family: var(--ff-mono);
  color: var(--sand);
}

.page-about .ab-note[open] > summary::before {
  content: "−";
}

.page-about .ab-note > summary:hover {
  background: var(--pitch-mid);
}

.page-about .ab-note .yk-fold__body {
  padding: 0 18px 18px 34px;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--dust);
}

.page-about .ab-note .yk-fold__body p {
  margin: 0;
}

/* ---------- 赛事级别长表 ---------- */

.page-about .ab-tier {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 2px solid var(--line-green);
}

.page-about .ab-tier__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0 18px;
  border-bottom: 2px solid var(--pitch-mid);
  transition: background var(--ease), padding-left var(--ease);
}

.page-about .ab-tier__row:hover {
  background: var(--pitch-night);
  padding-left: 12px;
}

.page-about .ab-tier__lv {
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--dust);
}

.page-about .ab-tier__name {
  font-size: 1.06rem;
  font-weight: 600;
  color: var(--chalk);
}

.page-about .ab-tier__row:hover .ab-tier__name {
  color: var(--sand);
}

.page-about .ab-tier__desc {
  font-size: 0.89rem;
  line-height: 1.72;
  color: var(--dust);
}

/* ---------- 合作生态 ---------- */

.page-about .ab-coop {
  display: grid;
  gap: 32px;
  margin-top: 24px;
}

.page-about .ab-ring {
  display: block;
}

.page-about .ab-ring svg {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  margin: 0 auto;
}

.page-about .ab-legend {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-about .ab-legend__item {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-size: 0.83rem;
  line-height: 1.6;
  color: var(--dust);
}

.page-about .ab-legend__dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  transform: translateY(1px);
}

.page-about .ab-legend__dot--sand {
  background: var(--sand);
}

.page-about .ab-legend__dot--green {
  background: var(--line-green);
}

.page-about .ab-coop__text {
  min-width: 0;
}

/* ---------- 更新节奏 ---------- */

.page-about .ab-cycle {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .ab-cycle__item {
  padding: 18px 18px 20px;
  background: var(--pitch-night);
  border-left: 4px solid var(--sand);
  transition: background var(--ease), border-color var(--ease);
}

.page-about .ab-cycle__item:hover {
  background: var(--pitch-mid);
}

.page-about .ab-cycle__when {
  display: inline-block;
  font-family: var(--ff-display);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  color: var(--sand);
  margin-bottom: 10px;
}

.page-about .ab-cycle__text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--dust);
}

/* ---------- 认可 ---------- */

.page-about .ab-honor {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  max-width: 66ch;
}

.page-about .ab-honor__item {
  position: relative;
  padding: 15px 0 15px 22px;
  border-bottom: 2px solid var(--pitch-mid);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--dust);
}

.page-about .ab-honor__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 23px;
  width: 9px;
  height: 9px;
  background: var(--sand);
}

.page-about .ab-honor__item:first-child::before {
  background: var(--flag-yellow);
}

/* ---------- 尾部引导 ---------- */

.page-about .ab-next {
  border-top: 2px solid var(--line-green);
  background: var(--pitch-night);
  padding: 36px 0 44px;
}

.page-about .ab-next__inner {
  display: grid;
  gap: 22px;
}

.page-about .ab-next__title {
  font-size: clamp(1.3rem, 4.6vw, 1.85rem);
  line-height: 1.3;
  font-weight: 700;
  color: var(--chalk);
  margin: 0 0 12px;
}

.page-about .ab-next__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--dust);
  max-width: 52ch;
}

.page-about .ab-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 微显 ---------- */

.page-about [data-reveal] {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .page-about [data-reveal] {
    transition: opacity 300ms ease, transform 300ms ease;
  }
}

/* ---------- 平板以上 ---------- */

@media (min-width: 720px) {
  .page-about .ab-roles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .ab-tier__row {
    grid-template-columns: 92px 150px minmax(0, 1fr);
    gap: 4px 18px;
    align-items: baseline;
  }

  .page-about .ab-cycle__item {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-about .ab-cycle__when {
    margin-bottom: 0;
  }

  .page-about .ab-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
  }

  .page-about .ab-next__links {
    justify-content: flex-end;
  }
}

/* ---------- 桌面：左刻度 + 右长文 ---------- */

@media (min-width: 900px) {
  .page-about .ab-hero {
    padding: 52px 0 58px;
  }

  .page-about .ab-hero__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .ab-hero__lead {
    font-size: 1.05rem;
  }

  .page-about .ab-body__grid {
    display: grid;
    grid-template-columns: var(--ab-rail-w) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .ab-rail {
    display: block;
    position: sticky;
    top: 104px;
  }

  .page-about .ab-rail__cap {
    font-family: var(--ff-mono);
    font-size: 0.62rem;
    letter-spacing: 0.22em;
    color: var(--dust);
    margin: 0 0 12px;
  }

  .page-about .ab-rail__list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 2px solid var(--line-green);
  }

  .page-about .ab-rail__tick {
    position: relative;
    padding: 8px 0 8px 14px;
    font-family: var(--ff-mono);
    font-size: 0.74rem;
    letter-spacing: 0.06em;
    color: var(--dust);
    transition: color var(--ease);
  }

  .page-about .ab-rail__tick::before {
    content: "";
    position: absolute;
    left: -2px;
    top: 50%;
    width: 8px;
    height: 2px;
    background: var(--line-green);
    transform: translateY(-50%);
    transition: width var(--ease), background var(--ease);
  }

  .page-about .ab-rail__tick:last-child {
    color: var(--sand);
  }

  .page-about .ab-rail__tick:last-child::before {
    width: 16px;
    background: var(--sand);
  }

  .page-about .ab-rail__tick:hover {
    color: var(--chalk);
  }

  .page-about .ab-rail__tick:hover::before {
    width: 16px;
    background: var(--sand);
  }

  .page-about .ab-pipe {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 24px;
  }

  .page-about .ab-pipe::before {
    content: "";
    position: absolute;
    top: 10px;
    left: 14px;
    right: 14px;
    height: 2px;
    background: var(--line-green);
  }

  .page-about .ab-pipe__step::before {
    background: var(--pitch-deep);
  }

  .page-about .ab-pipe__step:first-child::before {
    background: var(--sand);
  }

  .page-about .ab-coop {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-ring svg {
    margin: 0;
  }

  .page-about .ab-sec__title {
    max-width: 30ch;
  }
}

/* ---------- 宽屏微调 ---------- */

@media (min-width: 1180px) {
  .page-about h1 {
    font-size: 4.1rem;
  }
}
</PAGE_CSS>>>