/* ===== page: about ===== */
.page-about {
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-about .crumbs {
  padding-top: clamp(14px, 2.5vw, 26px);
}

/* --- 开篇 --- */
.page-about .about-open {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  padding-top: clamp(18px, 3vw, 36px);
  padding-bottom: clamp(34px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-open__copy {
  max-width: 62ch;
}

.page-about .about-open .kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-sans);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-open .kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
}

.page-about .about-open .display-title {
  margin: 16px 0 0;
}

.page-about .about-open .lede {
  margin-top: 18px;
}

.page-about .about-facts {
  list-style: none;
  margin: clamp(28px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink-2);
}

.page-about .about-facts .num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3.2vw, 1.9rem);
  line-height: 1;
  color: var(--amber);
  letter-spacing: -.01em;
}

.page-about .about-facts li span:last-child {
  font-family: var(--font-sans);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--mute);
}

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

.page-about .about-open__media .media {
  aspect-ratio: 12 / 7;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-open__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-open__media .media__caption {
  margin-top: 12px;
  font-family: var(--font-sans);
  font-size: .78rem;
  line-height: 1.7;
  color: var(--mute);
}

/* --- 通用章节 --- */
.page-about .about-chapter {
  padding-top: clamp(38px, 6vw, 76px);
}

.page-about .section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

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

.page-about .rail-note {
  margin: 0;
  font-family: var(--font-sans);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mute);
}

/* --- 时间轴 --- */
.page-about .about-trace {
  position: relative;
  margin-top: clamp(26px, 4vw, 42px);
  padding-left: 34px;
}

.page-about .about-trace::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(46, 242, 200, .10) 100%);
}

.page-about .about-trace__item {
  position: relative;
  margin: 0 0 clamp(24px, 3.4vw, 34px);
  padding: clamp(16px, 2.4vw, 22px) clamp(18px, 2.6vw, 26px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.page-about .about-trace__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 22px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink);
  box-sizing: border-box;
}

.page-about .about-trace__step {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-trace__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.06rem, 2vw, 1.28rem);
  letter-spacing: .02em;
  color: var(--paper);
}

.page-about .about-trace__item p:last-child {
  margin: 0;
  font-family: var(--font-body);
  font-size: .96rem;
  line-height: 1.95;
  color: #c7d8d2;
}

/* --- 里程碑标签页 --- */
.page-about .about-miles {
  margin-top: clamp(24px, 3.6vw, 38px);
}

.page-about .about-miles .tabs__list,
.page-about .about-team__tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-miles .tabs__tab,
.page-about .about-team__tabs .tabs__tab {
  font-family: var(--font-mono);
  font-size: .84rem;
  letter-spacing: .06em;
  padding: 9px 16px;
  background: transparent;
  color: var(--mute);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-about .about-team__tabs .tabs__tab {
  font-family: var(--font-sans);
  font-size: .84rem;
  letter-spacing: .08em;
}

.page-about .about-miles .tabs__tab:hover,
.page-about .about-team__tabs .tabs__tab:hover {
  color: var(--cyan-soft);
  border-color: var(--cyan);
}

.page-about .about-miles .tabs__tab:focus-visible,
.page-about .about-team__tabs .tabs__tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .about-miles .tabs__tab.is-on,
.page-about .about-team__tabs .tabs__tab.is-on,
.page-about .about-miles .tabs__tab[aria-selected="true"],
.page-about .about-team__tabs .tabs__tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--graphite);
}

.page-about .about-miles .tabs__panel {
  position: relative;
  margin-top: 20px;
  padding: clamp(20px, 3vw, 34px);
  background: var(--paper);
  border: 1px solid rgba(6, 19, 15, .16);
  border-radius: var(--radius);
  box-shadow: 9px 9px 0 -1px rgba(46, 242, 200, .14);
}

.page-about .miles-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 6vw, 3.2rem);
  line-height: 1;
  letter-spacing: .02em;
  color: rgba(11, 47, 38, .18);
}

.page-about .about-miles .tabs__panel h3 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.56rem);
  letter-spacing: .02em;
  color: #0b2f26;
}

.page-about .about-miles .tabs__panel p {
  margin: 0;
  font-family: var(--font-body);
  font-size: .98rem;
  line-height: 1.95;
  color: #24463c;
}

/* --- 团队 --- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(24px, 3.6vw, 38px);
  align-items: start;
}

.page-about .about-team__tabs .tabs__panel {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-about .about-team__tabs .tabs__panel h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  letter-spacing: .02em;
  color: var(--paper);
}

.page-about .about-team__tabs .tabs__panel p {
  margin: 0;
  font-family: var(--font-body);
  font-size: .96rem;
  line-height: 1.95;
  color: #c7d8d2;
}

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

.page-about .about-team__media .media {
  aspect-ratio: 10 / 7;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-team__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-team__media .media__caption {
  margin-top: 12px;
  font-family: var(--font-sans);
  font-size: .78rem;
  line-height: 1.7;
  color: var(--mute);
}

/* --- 运营原则 --- */
.page-about .about-rules {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(24px, 3.6vw, 38px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-rules__item {
  padding: clamp(18px, 2.8vw, 26px);
  background: var(--ink);
}

.page-about .about-rules__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .18em;
  color: var(--amber);
}

.page-about .about-rules__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.8vw, 1.16rem);
  letter-spacing: .02em;
  color: var(--paper);
}

.page-about .about-rules__item p:last-child {
  margin: 0;
  font-family: var(--font-body);
  font-size: .93rem;
  line-height: 1.9;
  color: #c7d8d2;
}

/* --- 赛季档案 --- */
.page-about .about-archive {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(24px, 3.6vw, 38px);
  align-items: start;
}

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

.page-about .about-archive__media .media {
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-archive__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-archive__media .media__caption {
  margin-top: 12px;
  font-family: var(--font-sans);
  font-size: .78rem;
  line-height: 1.7;
  color: var(--mute);
}

.page-about .about-archive__lede {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.95;
  color: #c7d8d2;
}

.page-about .about-archive__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-archive__list li {
  padding-left: 16px;
  border-left: 2px solid var(--line-strong);
}

.page-about .about-archive__list li p {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: .93rem;
  line-height: 1.9;
  color: var(--mute);
}

.page-about .about-archive__status {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-family: var(--font-sans);
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--cyan-soft);
}

/* --- 结尾行动区 --- */
.page-about .about-cta {
  padding-top: clamp(38px, 6vw, 72px);
  padding-bottom: clamp(20px, 4vw, 40px);
}

.page-about .about-cta__inner {
  padding: clamp(24px, 4vw, 44px);
  background: linear-gradient(135deg, var(--ink-2) 0%, var(--graphite) 100%);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

.page-about .about-cta__inner h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  letter-spacing: .02em;
  color: var(--paper);
}

.page-about .about-cta__inner p {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: .96rem;
  line-height: 1.95;
  color: #c7d8d2;
}

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

/* --- 响应式 --- */
@media (min-width: 720px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 960px) {
  .page-about .about-open {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: clamp(32px, 5vw, 66px);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-about .about-archive {
    grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-miles .tabs__tab,
  .page-about .about-team__tabs .tabs__tab {
    transition: none;
  }
}