/* ========== 品牌自述 / about ========== */
.page-about {
  background: var(--ink);
  color: var(--ice);
  overflow-x: clip;
}

/* ---------- 页头 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
  min-height: clamp(520px, 78vh, 760px);
  padding-block: clamp(40px, 7vw, 80px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero__shot {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .about-hero__shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.32) contrast(1.06) brightness(.42);
}

.page-about .about-hero__shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 14, 18, .94), rgba(11, 14, 18, .52) 40%, rgba(11, 14, 18, .97)),
    radial-gradient(58% 70% at 88% 10%, rgba(255, 210, 0, .18), transparent 62%),
    radial-gradient(48% 56% at 4% 96%, rgba(55, 245, 160, .12), transparent 66%);
}

.page-about .about-hero__inner {
  position: relative;
  width: 100%;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(26px, 5vw, 54px);
}

.page-about .about-hero__title {
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: clamp(40px, 7.2vw, 104px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0.24em 0 0.36em;
  max-width: 15em;
  color: var(--ice);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15.5px, 1.25vw, 18px);
  line-height: 1.85;
  color: rgba(244, 247, 250, .78);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(30px, 5vw, 52px) 0 0;
  padding: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  max-width: 780px;
}

.page-about .about-fact {
  background: rgba(19, 26, 36, .88);
  padding: 14px 16px;
}

.page-about .about-fact dt {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-about .about-fact dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.2vw, 28px);
  letter-spacing: 0.02em;
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
}

/* ---------- 通用章节 ---------- */
.page-about .section {
  position: relative;
  padding-block: clamp(56px, 9vw, 120px);
}

.page-about .section__head {
  max-width: 46em;
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-about .section__title {
  margin: 0.3em 0 0.4em;
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: clamp(30px, 4.2vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.005em;
  color: var(--ice);
}

.page-about .section__lead {
  margin: 0;
  font-size: clamp(15.5px, 1.2vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .prose {
  max-width: 38em;
  font-size: clamp(15.5px, 1.15vw, 17px);
  line-height: 1.9;
  color: rgba(244, 247, 250, .82);
}

.page-about .prose p {
  margin: 0 0 1.1em;
}

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

/* ---------- 赛季年鉴 ---------- */
.page-about .about-history__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 4px 0 0 30px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--yellow) 0%, var(--green) 46%, var(--line) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: clamp(22px, 3vw, 34px);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--line);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-about .about-timeline__item:hover::before {
  border-color: var(--yellow);
  background: var(--yellow);
}

.page-about .about-timeline__item.is-current::before {
  border-color: var(--green);
  background: var(--green);
  animation: about-pulse 1.8s var(--ease) infinite;
}

@keyframes about-pulse {
  0% { box-shadow: 0 0 0 0 rgba(55, 245, 160, .45); }
  70% { box-shadow: 0 0 0 10px rgba(55, 245, 160, 0); }
  100% { box-shadow: 0 0 0 0 rgba(55, 245, 160, 0); }
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--yellow);
}

.page-about .about-timeline__title {
  margin: 6px 0 6px;
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 600;
  color: var(--ice);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-timeline__reveal {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--green);
  transition: max-height .34s var(--ease), opacity .26s var(--ease), margin-top .34s var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__reveal {
  max-height: 7em;
  opacity: 1;
  margin-top: 8px;
}

@media (hover: none) {
  .page-about .about-timeline__reveal {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
  }
}

.page-about .about-history__media {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-about .about-history__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--graphite);
  filter: saturate(.45) contrast(1.05) brightness(.92);
}

.page-about .about-history__caption,
.page-about .about-team__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 覆盖规模 ---------- */
.page-about .about-scale {
  position: relative;
  padding-block: clamp(44px, 7vw, 84px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(19, 26, 36, .95), rgba(11, 14, 18, .95));
  overflow: hidden;
}

.page-about .about-scale::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -10%;
  width: min(520px, 60vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 60% 40%, rgba(255, 210, 0, .16), transparent 62%);
  pointer-events: none;
}

.page-about .about-scale::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(61, 74, 92, .28) 1px, transparent 1px),
    linear-gradient(180deg, rgba(61, 74, 92, .28) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .55;
  pointer-events: none;
}

.page-about .about-scale .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-scale__title {
  margin: 0.28em 0 clamp(24px, 4vw, 40px);
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: clamp(28px, 3.6vw, 46px);
  line-height: 1.1;
  color: var(--ice);
}

.page-about .about-scale__band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-scale__cell {
  background: var(--ink);
  padding: clamp(18px, 2.4vw, 26px);
}

.page-about .about-scale__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
}

.page-about .about-scale__unit {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-about .about-scale__desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 247, 250, .68);
}

/* ---------- 内容团队 ---------- */
.page-about .about-team__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 60px);
  align-items: start;
}

.page-about .about-team__lead {
  margin: 0 0 clamp(22px, 3vw, 34px);
}

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

.page-about .about-roles__item {
  background: rgba(19, 26, 36, .86);
  padding: clamp(16px, 2vw, 22px);
  border-left: 3px solid transparent;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-about .about-roles__item:hover {
  border-left-color: var(--yellow);
  background: var(--graphite);
}

.page-about .about-roles__count {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1;
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
}

.page-about .about-roles__name {
  margin: 10px 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ice);
}

.page-about .about-roles__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  filter: saturate(.4) contrast(1.05) brightness(.9);
}

.page-about .about-team__media::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 18px;
  bottom: 46px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--yellow), var(--green));
}

/* ---------- 发布流程 ---------- */
.page-about .about-flow__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  position: relative;
  padding: 22px 20px 22px 22px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(19, 26, 36, .86), rgba(19, 26, 36, 0));
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 42px;
  height: 2px;
  background: var(--yellow);
}

.page-about .about-flow__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--green);
}

.page-about .about-flow__name {
  margin: 8px 0;
  font-size: clamp(17px, 1.6vw, 21px);
  font-weight: 600;
  color: var(--ice);
}

.page-about .about-flow__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-clock {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid rgba(55, 245, 160, .28);
  background: linear-gradient(120deg, rgba(14, 59, 46, .55), rgba(11, 14, 18, .6));
}

.page-about .about-clock__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(55, 245, 160, .18);
}

.page-about .about-clock__item:last-of-type {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-clock__label {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-clock__value {
  font-family: var(--font-mono);
  font-size: clamp(16px, 1.8vw, 22px);
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

.page-about .about-clock__note {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 247, 250, .7);
}

/* ---------- 陕西本地速度 ---------- */
.page-about .about-shaanxi__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .about-shaanxi__panel {
  padding: clamp(20px, 3vw, 32px);
  background: var(--pine);
  border: 1px solid rgba(55, 245, 160, .3);
}

.page-about .about-shaanxi__panel-title {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--green);
}

.page-about .about-nodes {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.page-about .about-node {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(55, 245, 160, .18);
  font-size: 15px;
}

.page-about .about-node:last-child {
  border-bottom: 0;
}

.page-about .about-node__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(55, 245, 160, .16);
}

.page-about .about-node__name {
  font-weight: 500;
  color: var(--ice);
}

.page-about .about-node__state {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--green);
}

.page-about .about-shaanxi__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid rgba(55, 245, 160, .3);
}

.page-about .about-shaanxi__stats dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(244, 247, 250, .62);
}

.page-about .about-shaanxi__stats dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-partners__card {
  background: var(--graphite);
  padding: clamp(20px, 2.8vw, 30px);
  transition: background-color .2s var(--ease);
}

.page-about .about-partners__card:hover {
  background: rgba(42, 53, 66, .7);
}

.page-about .about-partners__count {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1;
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
}

.page-about .about-partners__card h3 {
  margin: 12px 0 8px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ice);
}

.page-about .about-partners__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 结尾导流 ---------- */
.page-about .about-next {
  padding-bottom: clamp(72px, 11vw, 132px);
}

.page-about .about-next .section__title {
  margin-top: 0.4em;
}

.page-about .about-next__box {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 4.5vw, 56px);
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(255, 210, 0, .08), rgba(19, 26, 36, .92) 44%);
}

.page-about .about-next__box::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(55, 245, 160, .16), transparent 68%);
  pointer-events: none;
}

.page-about .about-next__lead {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 40em;
  font-size: clamp(15.5px, 1.2vw, 17px);
  line-height: 1.85;
  color: rgba(244, 247, 250, .8);
}

.page-about .about-next__links {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-scale__band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-shaanxi__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-clock {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-clock__item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 0 0 0 16px;
    border-bottom: 0;
    border-left: 1px solid rgba(55, 245, 160, .2);
  }
  .page-about .about-clock__item:first-of-type {
    padding-left: 0;
    border-left: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-history__body {
    grid-template-columns: 5fr 7fr;
  }
  .page-about .about-team__body {
    grid-template-columns: 7fr 5fr;
  }
  .page-about .about-shaanxi__body {
    grid-template-columns: 5fr 7fr;
  }
  .page-about .about-flow__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-about .about-scale__band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 899px) {
  .page-about .about-team__media::before {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation: none !important;
    transition-duration: .01ms !important;
  }
}