/* ============================================
   历程与团队（/history/）页面专属样式
   ============================================ */

.page-about {
  background-color: var(--night-blue);
  color: var(--board-white);
  overflow-x: hidden;
}

.page-about h2,
.page-about h3 {
  font-family: var(--font-headline);
  font-weight: 700;
  letter-spacing: -0.005em;
}

.page-about p a,
.page-about li a:not([class]) {
  color: var(--electric-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--dur-short) var(--ease);
}

.page-about p a:hover,
.page-about p a:focus-visible,
.page-about li a:not([class]):hover,
.page-about li a:not([class]):focus-visible {
  color: var(--signal-orange);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(40px, 6vw, 84px) 0 clamp(48px, 7vw, 96px);
  border-bottom: var(--rule) solid var(--signal-orange);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(112% 82% at 86% 0%, rgba(57, 210, 200, 0.12) 0%, rgba(11, 27, 43, 0) 60%),
    linear-gradient(176deg, var(--night-blue) 0%, rgba(16, 38, 31, 0.96) 100%);
  pointer-events: none;
}

.page-about .about-hero > .container {
  position: relative;
}

.page-about .about-hero__crumb {
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: end;
}

.page-about .about-hero__kicker {
  color: var(--signal-orange);
  margin: 0 0 16px;
}

.page-about .about-hero h1 {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: clamp(34px, 5.6vw, 68px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--board-white);
  margin: 0 0 24px;
  max-width: 15ch;
}

.page-about .about-hero__lede {
  font-size: clamp(16px, 1.2vw, 18px);
  line-height: 1.78;
  color: var(--label-teal);
  margin: 0 0 32px;
  max-width: 38em;
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-hero .media-frame {
  border: var(--rule) solid var(--signal-orange);
  box-shadow: 10px 10px 0 var(--shadow-black);
}

.page-about .about-hero .media-frame__caption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--label-teal);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(40px, 5vw, 72px);
  }
}

/* ---------- 发展节点 ---------- */

.page-about .about-timeline {
  padding: clamp(56px, 8vw, 108px) 0 clamp(48px, 6vw, 88px);
}

.page-about .about-timeline__head {
  padding-bottom: clamp(20px, 3vw, 32px);
  margin-bottom: clamp(32px, 5vw, 56px);
  border-bottom: 2px solid var(--arena-green);
}

.page-about .about-timeline__head .label {
  color: var(--signal-orange);
}

.page-about .about-timeline h2 {
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.18;
  color: var(--board-white);
  margin: 12px 0 clamp(20px, 3vw, 30px);
  max-width: 22ch;
}

.page-about .about-yearchips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-yearchips a {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 7px 14px;
  color: var(--label-teal);
  border: 1px solid var(--arena-green);
  text-decoration: none;
  transition: color var(--dur-base) var(--ease),
              background-color var(--dur-base) var(--ease),
              border-color var(--dur-base) var(--ease);
}

.page-about .about-yearchips a:hover,
.page-about .about-yearchips a:focus-visible {
  color: var(--night-blue);
  background-color: var(--electric-teal);
  border-color: var(--electric-teal);
}

.page-about .about-yearchips a[data-active="true"] {
  color: var(--night-blue);
  background-color: var(--signal-orange);
  border-color: var(--signal-orange);
}

.page-about .about-timeline__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 16px;
  bottom: 40px;
  width: 4px;
  background: linear-gradient(180deg,
              var(--signal-orange) 0%,
              var(--arena-green) 24%,
              var(--arena-green) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 62px;
  padding-bottom: clamp(36px, 4.5vw, 56px);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--signal-orange);
  box-shadow: 0 0 0 6px var(--night-blue), 0 0 12px rgba(255, 122, 26, 0.5);
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.16em;
  color: var(--score-red);
  margin: 0 0 8px;
}

.page-about .about-timeline__body h3 {
  font-size: clamp(20px, 2.1vw, 27px);
  line-height: 1.32;
  color: var(--board-white);
  margin: 0 0 12px;
}

.page-about .about-timeline__body p {
  font-size: 16px;
  line-height: 1.82;
  color: var(--label-teal);
  margin: 0;
  max-width: 40em;
}

/* ---------- 呼吸留白区 ---------- */

.page-about .about-break {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  min-height: min(60vh, 540px);
  background-color: var(--arena-green);
  border-top: var(--rule) solid var(--signal-orange);
  border-bottom: var(--rule) solid var(--signal-orange);
  box-shadow: 0 10px 0 var(--shadow-black);
  padding: clamp(56px, 9vw, 118px) 0;
}

.page-about .about-break__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 56px);
  width: 100%;
}

.page-about .about-break__item {
  border-left: 3px solid var(--signal-orange);
  padding-left: clamp(16px, 2vw, 24px);
}

.page-about .about-break__item .board-num {
  display: block;
  margin-bottom: 10px;
}

.page-about .about-break__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--label-teal);
}

@media (min-width: 760px) {
  .page-about .about-break__grid {
    grid-template-columns: 1.15fr 1fr 1fr;
  }
}

/* ---------- 团队分工 ---------- */

.page-about .about-teams {
  background-color: var(--cream);
  color: var(--ink-brown);
  padding: clamp(56px, 8vw, 108px) 0;
}

.page-about .about-teams__head {
  max-width: 780px;
  margin-bottom: clamp(32px, 5vw, 52px);
}

.page-about .about-teams__head .label {
  color: var(--signal-orange);
}

.page-about .about-teams h2 {
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.18;
  color: var(--ink-brown);
  margin: 12px 0 16px;
}

.page-about .about-teams__lede {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(26, 20, 15, 0.72);
  margin: 0;
  max-width: 38em;
}

.page-about .about-teams__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.6vw, 28px);
}

.page-about .about-team {
  display: flex;
  flex-direction: column;
  background-color: var(--cream);
  border: var(--rule) solid var(--ink-brown);
  box-shadow: 8px 8px 0 var(--ink-brown);
  padding: clamp(22px, 2.4vw, 30px);
}

.page-about .about-team__no {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--score-red);
  margin: 0 0 18px;
}

.page-about .about-team__count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(38px, 4.4vw, 54px);
  line-height: 1;
  color: var(--ink-brown);
  margin: 0;
}

.page-about .about-team__count span {
  font-size: 0.4em;
  letter-spacing: 0.06em;
  margin-left: 5px;
  color: rgba(26, 20, 15, 0.58);
}

.page-about .about-team h3 {
  font-size: clamp(19px, 1.8vw, 23px);
  line-height: 1.35;
  color: var(--ink-brown);
  margin: 12px 0;
}

.page-about .about-team__desc {
  font-size: 15px;
  line-height: 1.78;
  color: rgba(26, 20, 15, 0.78);
  margin: 0 0 18px;
}

.page-about .about-team__list {
  list-style: none;
  margin: auto 0 0;
  padding: 16px 0 0;
  border-top: 2px solid rgba(26, 20, 15, 0.18);
}

.page-about .about-team__list li {
  position: relative;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(26, 20, 15, 0.72);
  padding-left: 18px;
}

.page-about .about-team__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 8px;
  height: 2px;
  background: var(--signal-orange);
}

.page-about .about-teams__foot {
  margin: clamp(28px, 4vw, 40px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(26, 20, 15, 0.68);
  max-width: 46em;
}

@media (min-width: 760px) {
  .page-about .about-teams__grid {
    grid-template-columns: 1.4fr 1fr 0.85fr;
  }
}

/* ---------- 场馆档案标准 ---------- */

.page-about .about-venues {
  padding: clamp(56px, 8vw, 108px) 0;
}

.page-about .about-venues__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 64px);
}

.page-about .about-venues__text .label {
  color: var(--signal-orange);
}

.page-about .about-venues h2 {
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.18;
  color: var(--board-white);
  margin: 12px 0 16px;
  max-width: 18ch;
}

.page-about .about-venues__lede {
  font-size: 16px;
  line-height: 1.8;
  color: var(--label-teal);
  margin: 0 0 clamp(28px, 4vw, 40px);
  max-width: 38em;
}

.page-about .about-standards {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-standards li {
  position: relative;
  padding: 18px 0 18px 62px;
  border-top: 2px solid var(--arena-green);
}

.page-about .about-standards li:last-child {
  border-bottom: 2px solid var(--arena-green);
}

.page-about .about-standards__no {
  position: absolute;
  left: 0;
  top: 20px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--score-red);
}

.page-about .about-standards h3 {
  font-size: 18px;
  line-height: 1.4;
  color: var(--board-white);
  margin: 0 0 6px;
}

.page-about .about-standards p {
  font-size: 15px;
  line-height: 1.72;
  color: var(--label-teal);
  margin: 0;
}

.page-about .about-venues__figure {
  margin: 0;
}

.page-about .about-venues .media-frame {
  border: var(--rule) solid var(--signal-orange);
  box-shadow: 10px 10px 0 var(--shadow-black);
}

.page-about .about-venues .media-frame__caption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--label-teal);
}

@media (min-width: 900px) {
  .page-about .about-venues__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(40px, 5vw, 80px);
  }
}

/* ---------- 一周节奏 ---------- */

.page-about .about-week {
  background-color: var(--cream);
  color: var(--ink-brown);
  border-top: var(--rule) solid var(--ink-brown);
  border-bottom: var(--rule) solid var(--ink-brown);
  padding: clamp(56px, 8vw, 108px) 0;
}

.page-about .about-week__head {
  max-width: 740px;
  margin-bottom: clamp(32px, 5vw, 48px);
}

.page-about .about-week__head .label {
  color: var(--signal-orange);
}

.page-about .about-week h2 {
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.18;
  color: var(--ink-brown);
  margin: 12px 0 16px;
}

.page-about .about-week__lede {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(26, 20, 15, 0.72);
  margin: 0;
  max-width: 40em;
}

.page-about .about-week__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--ink-brown);
}

.page-about .about-week__list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(16px, 2vw, 22px) 0;
  border-bottom: 1px solid rgba(26, 20, 15, 0.2);
}

.page-about .about-week__day {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--score-red);
}

.page-about .about-week__body h3 {
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink-brown);
  margin: 0 0 6px;
}

.page-about .about-week__body p {
  font-size: 15px;
  line-height: 1.78;
  color: rgba(26, 20, 15, 0.72);
  margin: 0;
  max-width: 46em;
}

@media (min-width: 760px) {
  .page-about .about-week__list li {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-week__day {
    padding-top: 3px;
  }
}

/* ---------- 协作网络 ---------- */

.page-about .about-partners {
  background-color: var(--arena-green);
  padding: clamp(56px, 8vw, 108px) 0;
}

.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 64px);
}

.page-about .about-partners__text .label {
  color: var(--signal-orange);
}

.page-about .about-partners h2 {
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.18;
  color: var(--board-white);
  margin: 12px 0 16px;
  max-width: 20ch;
}

.page-about .about-partners__lead {
  font-size: 16px;
  line-height: 1.82;
  color: var(--label-teal);
  margin: 0 0 clamp(24px, 3.4vw, 36px);
  max-width: 40em;
}

.page-about .about-partners__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-partners__list li {
  padding: 18px 0;
  border-top: 2px solid rgba(57, 210, 200, 0.22);
}

.page-about .about-partners__list li:last-child {
  border-bottom: 2px solid rgba(57, 210, 200, 0.22);
}

.page-about .about-partners__list h3 {
  font-size: 18px;
  line-height: 1.4;
  color: var(--board-white);
  margin: 0 0 6px;
}

.page-about .about-partners__list p {
  font-size: 15px;
  line-height: 1.72;
  color: var(--label-teal);
  margin: 0;
}

.page-about .about-partners__foot {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--label-teal);
}

.page-about .about-partners__figure {
  margin: 0;
}

.page-about .about-partners .media-frame {
  border: var(--rule) solid var(--electric-teal);
  box-shadow: 10px 10px 0 var(--shadow-black);
}

@media (min-width: 900px) {
  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: clamp(40px, 5vw, 80px);
  }
}

/* ---------- 下一季 ---------- */

.page-about .about-next {
  padding: clamp(56px, 8vw, 108px) 0 clamp(64px, 9vw, 132px);
}

.page-about .about-next__head {
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .about-next__head .label {
  color: var(--signal-orange);
}

.page-about .about-next h2 {
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.18;
  color: var(--board-white);
  margin: 12px 0 0;
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 26px);
}

.page-about .about-next__grid .plate {
  background-color: rgba(16, 38, 31, 0.72);
  box-shadow: 8px 8px 0 var(--shadow-black);
  padding: clamp(22px, 2.4vw, 28px);
}

.page-about .about-next__grid .plate__no {
  color: var(--label-teal);
}

.page-about .about-next__grid .plate__cat {
  color: var(--signal-orange);
}

.page-about .about-next__grid .plate__title {
  font-family: var(--font-headline);
  font-size: clamp(19px, 1.8vw, 23px);
  line-height: 1.32;
  color: var(--board-white);
  margin: 12px 0 10px;
}

.page-about .about-next__grid .plate__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--label-teal);
  margin: 0;
}

@media (min-width: 820px) {
  .page-about .about-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 动效增强 ---------- */

.page-about [data-reveal] {
  opacity: 1;
  transform: none;
}

.page-about [data-reveal][data-visible="true"] {
  animation: about-rise var(--dur-long) var(--ease) both;
}

@keyframes about-rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal][data-visible="true"] {
    animation: none;
  }
}
</style>