.page-about {
  --hall-vip: #7B1113;
  --hall-diamond: #C8A24A;
  --hall-jade: #0F3D2E;
  --hall-gold: #E8C871;
  --hall-ink: #2B1714;
  --hall-orange: #E8792B;
}

.page-about .about-crumbs {
  padding: 1.4rem 0 .6rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 100% at 92% 0%, rgba(200, 162, 74, .30), transparent 60%),
    linear-gradient(155deg, var(--c-red-deep) 0%, var(--c-red) 68%, #560C0E 100%);
  color: var(--c-ivory);
  border-bottom: 3px solid var(--c-gold);
  padding: clamp(2rem, 6vw, 4.2rem) 0 clamp(1.8rem, 5vw, 3.2rem);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -32%;
  width: 42%;
  aspect-ratio: 1 / 1;
  border: 3px solid rgba(200, 162, 74, .34);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-about .about-hero .kicker {
  color: var(--c-gold-light);
  letter-spacing: .2em;
}

.page-about .about-hero h1 {
  margin: .55rem 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.05rem, 6.2vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: .01em;
  color: #FFF8EC;
}

.page-about .about-hero .lede {
  max-width: 48ch;
  margin: 1.15rem 0 0;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(246, 240, 230, .82);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 2px solid var(--c-line-gold);
  background: rgba(61, 10, 11, .52);
}

.page-about .fact {
  padding: 1rem .8rem;
  border-right: 1px solid rgba(200, 162, 74, .32);
  min-width: 0;
}

.page-about .fact:last-child {
  border-right: 0;
}

.page-about .fact__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.5rem, 3.4vw, 2.15rem);
  line-height: 1;
  color: var(--c-gold-light);
}

.page-about .fact__label {
  display: block;
  margin-top: .5rem;
  font-size: var(--step-index);
  letter-spacing: .12em;
  color: rgba(246, 240, 230, .72);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__figure {
  margin: 0 0 clamp(1.8rem, 5vw, 3.2rem);
  border: 3px solid var(--c-red-deep);
  box-shadow: var(--shadow-hard);
}

.page-about .about-timeline .section-title {
  color: var(--c-text);
}

.page-about .timeline {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
  margin-top: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .timeline__rail {
  border: 2px solid var(--c-line-gold);
  background: var(--surface-card);
  padding: .85rem .8rem;
  box-shadow: var(--shadow-card);
}

.page-about .timeline__rail-title {
  margin: 0 0 .5rem;
  font-family: var(--font-num);
  font-size: var(--step-index);
  letter-spacing: .24em;
  color: var(--c-gold-ink);
}

.page-about .timeline__rail ul {
  display: flex;
  gap: .4rem;
  margin: 0;
  padding: .15rem 0 .3rem;
  list-style: none;
  overflow-x: auto;
}

.page-about .timeline__rail a {
  display: block;
  padding: .45rem .7rem;
  font-family: var(--font-num);
  font-size: var(--step-small);
  color: var(--c-text);
  text-decoration: none;
  white-space: nowrap;
  border-left: 3px solid transparent;
  background: transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .timeline__rail a:hover,
.page-about .timeline__rail a:focus-visible {
  color: var(--c-red);
  border-left-color: var(--c-gold);
  background: rgba(200, 162, 74, .16);
}

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

.page-about .tnode {
  position: relative;
  padding: 0 0 clamp(1.6rem, 4vw, 2.4rem) clamp(1.4rem, 4vw, 2.4rem);
  border-left: 2px solid var(--c-line-gold);
}

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

.page-about .tnode::before {
  content: "";
  position: absolute;
  left: -9px;
  top: .4rem;
  width: 14px;
  height: 14px;
  background: var(--c-gold);
  border: 2px solid var(--c-red-deep);
  transform: rotate(45deg);
}

.page-about .tnode__stage {
  margin: 0 0 .6rem;
  font-family: var(--font-num);
  font-size: var(--step-index);
  letter-spacing: .24em;
  color: var(--c-gold-ink);
}

.page-about .tnode__card {
  background: var(--surface-card);
  border: 2px solid var(--c-line);
  border-left: 6px solid var(--c-red);
  padding: 1rem 1.1rem 1.1rem;
  box-shadow: var(--shadow-card);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
}

.page-about .tnode__card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
  border-left-color: var(--c-gold);
}

.page-about .tnode__card h3 {
  margin: 0 0 .55rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step-h3);
  color: var(--c-text);
}

.page-about .tnode__card p {
  margin: 0 0 .75rem;
  font-size: var(--step-small);
  line-height: 1.85;
  color: var(--c-text-soft);
}

.page-about .tnode__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0 !important;
}

/* ---------- 核算规则 ---------- */
.page-about .about-rules {
  background: linear-gradient(180deg, var(--c-green) 0%, #0A2A20 100%);
  color: var(--c-ivory);
  border-top: 3px solid var(--c-gold);
  border-bottom: 3px solid var(--c-gold);
}

.page-about .about-rules .kicker {
  color: var(--c-gold-light);
}

.page-about .about-rules .section-title {
  color: #FFF8EC;
}

.page-about .about-rules .lede {
  color: rgba(246, 240, 230, .78);
}

.page-about .rules-grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.4rem, 4vw, 2.4rem);
}

.page-about .rule {
  border: 2px solid rgba(200, 162, 74, .42);
  border-top: 4px solid var(--c-gold);
  background: rgba(246, 240, 230, .05);
  padding: 1.05rem 1rem 1.15rem;
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .rule:hover {
  background: rgba(200, 162, 74, .15);
  transform: translateY(-3px);
}

.page-about .rule__idx {
  margin: 0;
  font-family: var(--font-num);
  font-size: var(--step-index);
  letter-spacing: .2em;
  color: var(--c-gold-light);
}

.page-about .rule h3 {
  margin: .55rem 0 .55rem;
  font-family: var(--font-head);
  font-size: var(--step-h3);
  color: #FFF8EC;
}

.page-about .rule p {
  margin: 0;
  font-size: var(--step-small);
  line-height: 1.85;
  color: rgba(246, 240, 230, .78);
}

.page-about .rules-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  margin-top: clamp(1.4rem, 4vw, 2.2rem);
  background: rgba(200, 162, 74, .38);
  border: 1px solid rgba(200, 162, 74, .38);
}

.page-about .rules-stats .stat {
  background: #10352A;
  padding: 1rem 1.05rem;
}

.page-about .rules-stats .stat__value {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.1;
  color: var(--c-gold-light);
}

.page-about .rules-stats .stat__label {
  display: block;
  margin-top: .45rem;
  font-size: var(--step-index);
  letter-spacing: .12em;
  color: rgba(246, 240, 230, .7);
}

/* ---------- 厅别体系 ---------- */
.page-about .halls__intro {
  display: grid;
  gap: clamp(1.3rem, 4vw, 2.4rem);
  align-items: center;
}

.page-about .halls__figure {
  margin: 0;
  border: 3px solid var(--c-gold);
  box-shadow: var(--shadow-hard);
}

.page-about .halls {
  display: grid;
  gap: .9rem;
  margin-top: clamp(1.4rem, 4vw, 2.4rem);
}

.page-about .hall {
  border: 2px solid var(--hall-color);
  border-top: 8px solid var(--hall-color);
  background: var(--surface-card);
  padding: 1rem 1rem 1.1rem;
  box-shadow: var(--shadow-card);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .hall:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
}

.page-about .hall:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 3px;
}

.page-about .hall--vip { --hall-color: var(--hall-vip); }
.page-about .hall--diamond { --hall-color: var(--hall-diamond); }
.page-about .hall--jade { --hall-color: var(--hall-jade); }
.page-about .hall--gold { --hall-color: var(--hall-gold); }
.page-about .hall--ink { --hall-color: var(--hall-ink); }
.page-about .hall--orange { --hall-color: var(--hall-orange); }

.page-about .hall__code {
  display: inline-block;
  margin: 0;
  padding: .2rem .5rem;
  font-family: var(--font-num);
  font-size: var(--step-index);
  letter-spacing: .12em;
  color: #FFF8EC;
  background: var(--hall-color);
}

.page-about .hall--gold .hall__code,
.page-about .hall--diamond .hall__code {
  color: #3D0A0B;
}

.page-about .hall__name {
  margin: .7rem 0 .35rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step-h3);
  color: var(--c-text);
}

.page-about .hall__rate {
  margin: 0 0 .55rem;
  font-family: var(--font-num);
  font-size: var(--step-small);
  letter-spacing: .04em;
  color: var(--c-red);
}

.page-about .hall__desc {
  margin: 0;
  font-size: var(--step-small);
  line-height: 1.8;
  color: var(--c-text-soft);
}

/* ---------- 合作生态 ---------- */
.page-about .about-alliance {
  background: linear-gradient(180deg, var(--c-red-deep) 0%, #2A0708 100%);
  color: var(--c-ivory);
  border-top: 3px solid var(--c-gold);
}

.page-about .about-alliance .kicker {
  color: var(--c-gold-light);
}

.page-about .about-alliance .section-title {
  color: #FFF8EC;
}

.page-about .about-alliance .lede {
  color: rgba(246, 240, 230, .78);
}

.page-about .alliance__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.8rem);
  align-items: start;
}

.page-about .alliance__list {
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .7rem;
}

.page-about .alliance__list li {
  position: relative;
  padding: .85rem .9rem .85rem 2.4rem;
  border: 1px solid rgba(200, 162, 74, .35);
  background: rgba(246, 240, 230, .04);
  font-size: var(--step-small);
  line-height: 1.8;
  color: rgba(246, 240, 230, .84);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .alliance__list li:hover {
  background: rgba(200, 162, 74, .15);
  border-color: var(--c-gold);
}

.page-about .alliance__list li::before {
  content: "";
  position: absolute;
  left: .95rem;
  top: 1.3rem;
  width: 9px;
  height: 9px;
  background: var(--c-gold);
  transform: rotate(45deg);
}

.page-about .alliance__list strong {
  display: block;
  margin-bottom: .25rem;
  font-family: var(--font-head);
  font-size: .95rem;
  color: #FFF8EC;
}

.page-about .alliance__figure {
  margin: 0;
  border: 3px solid var(--c-gold);
  box-shadow: 9px 9px 0 rgba(0, 0, 0, .38);
}

/* ---------- 荣誉 ---------- */
.page-about .about-honors {
  background: var(--surface-page);
}

.page-about .honor-band {
  display: grid;
  gap: clamp(1.1rem, 3vw, 1.8rem);
  border: 3px solid var(--c-red-deep);
  background: var(--surface-card);
  box-shadow: var(--shadow-hard);
  padding: clamp(1.2rem, 4vw, 2rem);
}

.page-about .honor {
  border-left: 6px solid var(--c-gold);
  padding-left: 1rem;
}

.page-about .honor__year {
  margin: 0;
  font-family: var(--font-num);
  font-size: var(--step-index);
  letter-spacing: .24em;
  color: var(--c-gold-ink);
}

.page-about .honor h3 {
  margin: .5rem 0 .5rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step-h3);
  color: var(--c-text);
}

.page-about .honor p {
  margin: 0;
  font-size: var(--step-small);
  line-height: 1.85;
  color: var(--c-text-soft);
}

/* ---------- 尾段入口 ---------- */
.page-about .about-cta {
  background: linear-gradient(120deg, var(--c-red) 0%, #5E0D10 100%);
  border-top: 3px solid var(--c-gold);
  color: var(--c-ivory);
  padding: clamp(1.8rem, 5vw, 3rem) 0;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 1.2rem;
  align-items: center;
}

.page-about .about-cta__text {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  line-height: 1.7;
  color: #FFF8EC;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .halls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }

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

@media (min-width: 780px) {
  .page-about .rules-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-about .halls__intro {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-about .alliance__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }
}

@media (min-width: 860px) {
  .page-about .timeline {
    grid-template-columns: 172px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .timeline__rail {
    position: sticky;
    top: 1.5rem;
  }

  .page-about .timeline__rail ul {
    flex-direction: column;
    overflow: visible;
    gap: .15rem;
  }
}

@media (min-width: 1040px) {
  .page-about .halls {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tnode__card,
  .page-about .rule,
  .page-about .hall,
  .page-about .timeline__rail a,
  .page-about .alliance__list li {
    transition: none;
  }
}