/* ================= 品牌概况 · page-about ================= */

.page-about {
  overflow-x: clip;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .section {
  padding: 56px 0;
}

.page-about .section-head {
  margin-bottom: 30px;
}

.page-about .section--ink {
  background: var(--c-ink);
  color: var(--text);
}

.page-about .section--purple {
  background: var(--c-purple);
  color: var(--text);
}

.page-about .section--ivory {
  background: var(--c-ivory);
  color: var(--text-dark);
}

.page-about .section--ink .section-head__title,
.page-about .section--purple .section-head__title {
  color: var(--c-ivory);
}

.page-about .section--ivory .section-head__title {
  color: var(--text-dark);
}

.page-about .section-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .9375rem;
  font-weight: 600;
  letter-spacing: .18em;
  margin-bottom: 8px;
}

.page-about .section--ink .section-num,
.page-about .section--purple .section-num {
  color: var(--c-red-light);
}

.page-about .section--ivory .section-num {
  color: var(--c-red);
}

.page-about .about-lead {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 1.0625rem;
  line-height: 1.8;
}

.page-about .section--ink .about-lead,
.page-about .section--purple .about-lead {
  color: var(--text-soft);
}

.page-about .section--ivory .about-lead {
  color: rgba(26, 20, 32, .68);
}

/* ---------- 首屏 ---------- */

.page-about .about-top {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + 18px);
  background:
    radial-gradient(120% 80% at 92% -10%, rgba(200, 16, 46, .34), transparent 62%),
    radial-gradient(90% 70% at -10% 110%, rgba(47, 182, 168, .16), transparent 66%),
    linear-gradient(180deg, var(--c-purple) 0%, var(--c-ink) 100%);
}

.page-about .about-top .breadcrumb {
  position: relative;
  z-index: 1;
  font-size: .875rem;
}

.page-about .about-top .breadcrumb a,
.page-about .about-top .breadcrumb .breadcrumb__sep {
  color: var(--text-soft);
  text-decoration: none;
}

.page-about .about-top .breadcrumb a:hover {
  color: var(--c-gold);
}

.page-about .about-top .breadcrumb [aria-current="page"] {
  color: var(--c-gold);
}

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

.page-about .about-hero__inner {
  display: grid;
  gap: 34px;
  padding: 22px 0 54px;
}

.page-about .about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--c-gold);
}

.page-about .about-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--c-gold);
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 5.8vw, 3.7rem);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--c-ivory);
}

.page-about .about-hero h1 em {
  font-style: normal;
  color: var(--c-gold);
}

.page-about .about-hero__sub {
  margin: 0 0 26px;
  max-width: 54ch;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(237, 231, 221, .82);
}

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

.page-about .about-hero__panel {
  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-hero__panel > .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: rgba(14, 11, 20, .74);
}

.page-about .about-hero__panel .stat__label {
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--text-soft);
}

.page-about .about-hero__panel .stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.1;
  color: var(--c-ivory);
}

.page-about .about-hero__panel .stat--gold .stat__value {
  color: var(--c-gold);
}

.page-about .about-hero__panel .stat__unit {
  margin-left: 2px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-soft);
}

/* ---------- 01 规模 ---------- */

.page-about .about-scale .about-scale__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: linear-gradient(165deg, rgba(36, 21, 51, .9), rgba(14, 11, 20, .92));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-scale .about-scale__card:hover {
  transform: translateY(-3px);
  border-color: var(--c-gold);
  box-shadow: var(--shadow-2);
}

.page-about .about-scale .card--focus {
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(200, 16, 46, .30), transparent 62%),
    linear-gradient(165deg, #2c1a37, #120d1a);
  border-color: rgba(232, 180, 90, .45);
}

.page-about .about-scale h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1875rem;
  line-height: 1.5;
  color: var(--c-ivory);
}

.page-about .about-scale p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-about .about-chips {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-chips li {
  padding: 5px 11px;
  font-size: .8125rem;
  line-height: 1.4;
  color: var(--c-jade);
  border: 1px solid rgba(47, 182, 168, .42);
  border-radius: 999px;
  background: rgba(47, 182, 168, .08);
}

.page-about .about-more {
  margin-top: auto;
  padding-top: 6px;
  align-self: flex-start;
  font-size: .875rem;
  font-weight: 600;
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-more:hover {
  color: var(--c-ivory);
  border-bottom-color: var(--c-gold);
}

.page-about .section--ivory .about-more {
  color: var(--c-red);
}

.page-about .section--ivory .about-more:hover {
  color: var(--c-red-deep);
  border-bottom-color: var(--c-red-deep);
}

.page-about .about-more:focus-visible,
.page-about .about-chips li:focus-visible {
  outline: 2px solid var(--c-electric);
  outline-offset: 2px;
}

/* ---------- 02 时间轴 ---------- */

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

.page-about .about-node {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 0 0 30px 20px;
  border-left: 1px solid var(--line);
}

.page-about .about-node:last-child {
  padding-bottom: 8px;
  border-left-color: transparent;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(232, 180, 90, .14);
}

.page-about .about-node__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.625rem;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1;
  color: var(--c-gold);
}

.page-about .about-node__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--c-ivory);
}

.page-about .about-node__body p {
  margin: 0;
  max-width: 58ch;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-about .about-timeline__note {
  margin: 26px 0 0;
  padding: 14px 18px;
  border-left: 2px solid var(--c-red);
  background: rgba(200, 16, 46, .10);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text);
}

.page-about .about-timeline__note strong {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--c-gold);
}

/* ---------- 03 规则库 ---------- */

.page-about .about-rules {
  display: grid;
  gap: 26px;
}

.page-about .about-rules__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(110, 91, 58, .32);
}

.page-about .about-rules__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-rules__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 22px;
  background: rgba(110, 91, 58, .28);
  border: 1px solid rgba(110, 91, 58, .28);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 12px;
  background: #FFFDF8;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.625rem;
  font-weight: 600;
  line-height: 1;
  color: var(--c-red);
}

.page-about .about-fact__label {
  font-size: .8125rem;
  line-height: 1.5;
  color: rgba(26, 20, 32, .62);
}

.page-about .about-rules__text p {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: .9688rem;
  line-height: 1.85;
  color: rgba(26, 20, 32, .76);
}

.page-about .about-rules__text .about-more {
  margin-top: 6px;
  display: inline-block;
}

/* ---------- 04 会员三档 ---------- */

.page-about .about-tiers {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-tier {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 24px 20px 26px;
  background: linear-gradient(180deg, rgba(36, 21, 51, .92), rgba(14, 11, 20, .96));
  transition: background var(--dur) var(--ease);
}

.page-about .about-tier:hover,
.page-about .about-tier:focus-within {
  background: linear-gradient(180deg, rgba(200, 16, 46, .26), rgba(20, 13, 28, .98));
}

.page-about .about-tier__head h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.375rem;
  letter-spacing: -.01em;
  color: var(--c-gold);
}

.page-about .about-tier__fit {
  margin: 0;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-about .about-tier__bar {
  height: 3px;
  border-radius: 2px;
  background: rgba(110, 91, 58, .45);
  overflow: hidden;
}

.page-about .about-tier__bar span {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-jade), var(--c-electric));
}

.page-about .about-tier--1 .about-tier__bar span { width: 34%; }
.page-about .about-tier--2 .about-tier__bar span { width: 67%; }
.page-about .about-tier--3 .about-tier__bar span { width: 100%; }

.page-about .about-tier__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-tier__list li {
  position: relative;
  padding-left: 20px;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--text);
}

.page-about .about-tier__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--c-jade);
  background: rgba(47, 182, 168, .18);
}

/* ---------- 05 团队 ---------- */

.page-about .about-team__media {
  margin: 0 0 28px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-about .about-roles {
  display: flex;
  flex-direction: column;
}

.page-about .about-role {
  border-top: 1px solid var(--line);
}

.page-about .about-role:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-role summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--c-ivory);
  transition: color var(--dur) var(--ease);
}

.page-about .about-role summary::-webkit-details-marker {
  display: none;
}

.page-about .about-role summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--c-gold);
}

.page-about .about-role[open] summary::after {
  content: "−";
}

.page-about .about-role summary:hover {
  color: var(--c-gold);
}

.page-about .about-role summary:focus-visible {
  outline: 2px solid var(--c-electric);
  outline-offset: 3px;
}

.page-about .about-role p {
  margin: 0;
  padding: 0 0 20px;
  max-width: 66ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 06 本地服务 ---------- */

.page-about .about-local__media {
  margin: 0 0 24px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(110, 91, 58, .32);
}

.page-about .about-local__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-local__grid {
  display: grid;
  gap: 1px;
  background: rgba(110, 91, 58, .28);
  border: 1px solid rgba(110, 91, 58, .28);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-local__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px;
  background: #FFFDF8;
}

.page-about .about-local__item h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--c-red);
}

.page-about .about-local__item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: #3D3444;
}

.page-about .about-local__val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .9688rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-dark);
  overflow-wrap: anywhere;
}

/* ---------- 07 合作 ---------- */

.page-about .about-partners {
  display: grid;
  gap: 16px;
}

.page-about .about-partner {
  position: relative;
  padding: 26px 24px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(36, 21, 51, .9), rgba(14, 11, 20, .95));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-partner:hover {
  transform: translateY(-3px);
  border-color: var(--c-gold);
  box-shadow: var(--shadow-2);
}

.page-about .about-partner__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 2.75rem;
  font-weight: 600;
  line-height: 1;
  color: var(--c-gold);
}

.page-about .about-partner h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--c-ivory);
}

.page-about .about-partner p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 收尾引导 ---------- */

.page-about .about-cta-band {
  padding: 48px 0;
  background:
    radial-gradient(100% 160% at 100% 0%, rgba(232, 180, 90, .20), transparent 60%),
    linear-gradient(120deg, var(--c-red-deep), var(--c-purple));
}

.page-about .about-cta-band__inner {
  display: grid;
  gap: 20px;
  align-items: center;
}

.page-about .about-cta-band h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--c-ivory);
}

.page-about .about-cta-band p {
  margin: 0;
  max-width: 54ch;
  font-size: .9688rem;
  line-height: 1.75;
  color: rgba(247, 243, 234, .8);
}

.page-about .about-cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板 ---------- */

@media (min-width: 760px) {
  .page-about .section {
    padding: 72px 0;
  }

  .page-about .section-head {
    margin-bottom: 36px;
  }

  .page-about .about-hero__inner {
    padding: 26px 0 68px;
  }

  .page-about .about-node {
    grid-template-columns: 6.5rem minmax(0, 1fr);
    gap: 0 30px;
    padding-left: 30px;
  }

  .page-about .about-node__year {
    font-size: 2.125rem;
  }

  .page-about .about-node__body {
    padding-top: 2px;
  }

  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-local__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-about .section {
    padding: 88px 0;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: end;
    padding: 30px 0 88px;
  }

  .page-about .about-hero__panel > .stat {
    padding: 22px 20px;
  }

  .page-about .about-hero__panel .stat__value {
    font-size: 2rem;
  }

  .page-about .about-rules {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-tier {
    padding: 28px 24px 30px;
  }

  .page-about .about-cta-band {
    padding: 64px 0;
  }

  .page-about .about-cta-band__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scale .about-scale__card,
  .page-about .about-partner,
  .page-about .about-tier,
  .page-about .about-more {
    transition: none;
  }

  .page-about .about-scale .about-scale__card:hover,
  .page-about .about-partner:hover {
    transform: none;
  }
}