/* ================= 品牌自述页 · 专属样式 ================= */

.page-about {
  --about-body: #C9D5CE;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .about-crumb {
  padding-top: 22px;
  margin-bottom: 2px;
}

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

.page-about .section-head {
  max-width: 760px;
}

.page-about .section-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .section-title {
  margin-top: 12px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-about .section-intro {
  margin-top: 16px;
  max-width: 64ch;
  font-size: 16px;
  color: var(--about-body);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: 34px;
  background: var(--ink);
}

.about-hero-grid {
  display: grid;
  gap: 38px;
  align-items: center;
}

.about-hero-title {
  margin-top: 14px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(32px, 6.6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.018em;
  max-width: 17ch;
}

.about-hero-lede {
  margin-top: 20px;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-body);
}

.about-hero-stats {
  list-style: none;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--scale);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.about-hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 27px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.stat-plus {
  font-size: 18px;
  margin-left: 1px;
}

.stat-label {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.about-hero-actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.about-hero-visual {
  border: 1px solid var(--scale);
  background: var(--deep);
  padding: 18px 18px 14px;
}

.about-hero-visual::before {
  content: "赛季跨度 10 — 06";
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
  padding-bottom: 12px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--scale);
}

.hero-ruler {
  display: block;
  width: 100%;
  height: auto;
}

.ruler-axis,
.ruler-ticks line {
  stroke: var(--scale);
  stroke-width: 1;
}

.ruler-labels text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  fill: var(--mist);
}

.ruler-band--regular {
  fill: var(--tier);
}

.ruler-band--playoff {
  fill: var(--orange);
}

.ruler-marker {
  stroke: var(--lime);
  stroke-width: 1.5;
}

.ruler-marker-dot {
  fill: var(--lime);
}

.ruler-marker-text {
  font-family: var(--font-body);
  font-size: 11px;
  fill: var(--lime);
}

/* ---------- 01 业务范围 ---------- */
.scope-lines {
  margin-top: 34px;
  display: grid;
  gap: 1px;
  background: var(--scale);
  border: 1px solid var(--scale);
}

.scope-line {
  position: relative;
  background: var(--ink);
  padding: 28px 22px 26px;
  transition: background 180ms var(--ease);
}

.scope-line::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background 150ms var(--ease);
}

.scope-line:hover {
  background: var(--deep);
}

.scope-line:hover::before {
  background: var(--lime);
}

.scope-mark {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.scope-title {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 24px;
  line-height: 1.25;
}

.scope-text {
  font-size: 15.5px;
  color: var(--about-body);
  max-width: 46ch;
}

.scope-facts {
  list-style: none;
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 13px;
  color: var(--mist);
}

.scope-facts .mono {
  color: var(--lime);
  font-size: 14px;
  margin-right: 4px;
}

.scope-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--scale);
  padding-bottom: 3px;
  transition: color 150ms var(--ease), border-color 150ms var(--ease);
}

.scope-link:hover,
.scope-link:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

.scope-audience {
  margin-top: 42px;
  padding-top: 30px;
  border-top: 1px solid var(--scale);
}

.scope-audience-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 20px;
  margin-bottom: 22px;
}

.audience-list {
  list-style: none;
  display: grid;
  gap: 20px;
}

.audience-list li {
  padding-left: 16px;
  border-left: 2px solid var(--scale);
  transition: border-color 160ms var(--ease);
}

.audience-list li:hover {
  border-color: var(--teal);
}

.audience-who {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.4;
}

.audience-gain {
  margin-top: 6px;
  font-size: 14.5px;
  color: var(--mist);
  max-width: 46ch;
}

/* ---------- 02 团队 ---------- */
.page-about .about-team {
  background: var(--deep);
}

.team-grid {
  margin-top: 34px;
  display: grid;
  gap: 22px;
}

.team-role {
  position: relative;
  background: var(--ink);
  border: 1px solid var(--scale);
  padding: 26px 22px;
  transition: border-color 180ms var(--ease);
}

.team-role:hover {
  border-color: var(--teal);
}

.role-count {
  font-size: 52px;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--lime);
}

.role-name {
  margin: 14px 0 10px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 21px;
}

.role-desc {
  font-size: 15px;
  color: var(--about-body);
}

.role-duties {
  list-style: none;
  margin-top: 18px;
  display: grid;
  gap: 9px;
  font-size: 13.5px;
  color: var(--mist);
}

.role-duties li {
  position: relative;
  padding-left: 16px;
  transition: color 160ms var(--ease);
}

.role-duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--teal);
}

.team-role:hover .role-duties li {
  color: var(--paper);
}

.team-figure {
  margin: 0;
  border: 1px solid var(--scale);
  padding: 10px;
  background: var(--tier);
}

.team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.5) contrast(1.05);
}

.page-about .media-caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 03 历程 ---------- */
.era-track {
  list-style: none;
  margin-top: 36px;
  border-top: 1px solid var(--scale);
  display: grid;
  gap: 0;
}

.era-item {
  position: relative;
  padding: 24px 0 22px 22px;
  border-bottom: 1px solid var(--scale);
  transition: background 160ms var(--ease);
}

.era-item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 30px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--lime);
  border-radius: 50%;
  background: var(--ink);
  transition: background 160ms var(--ease), border-color 160ms var(--ease);
}

.era-item:hover {
  background: var(--deep);
}

.era-item:hover::before {
  background: var(--lime);
}

.era-year {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.era-title {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.32;
}

.era-note {
  margin-top: 10px;
  font-size: 14px;
  color: var(--about-body);
  opacity: 0.7;
  max-width: 52ch;
  transition: opacity 200ms var(--ease), color 200ms var(--ease);
}

.era-item:hover .era-note {
  opacity: 1;
  color: var(--paper);
}

.era-figure {
  margin: 34px 0 0;
}

.era-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.45) brightness(0.9);
}

/* ---------- 04 流程 ---------- */
.page-about .about-flow {
  background: var(--deep);
}

.flow-lede {
  margin-top: 18px;
  max-width: 60ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--about-body);
}

.flow-list {
  list-style: none;
  margin-top: 38px;
  display: grid;
  gap: 26px;
}

.flow-step {
  position: relative;
  padding-top: 58px;
}

.flow-num {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--scale);
  background: var(--ink);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--lime);
  transition: border-color 180ms var(--ease);
}

.flow-step:hover .flow-num {
  border-color: var(--lime);
}

.flow-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.35;
}

.flow-text {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 40ch;
}

.flow-arrow {
  display: none;
  position: absolute;
  top: 13px;
  right: -16px;
  width: 22px;
  height: 16px;
  fill: none;
  stroke: var(--scale);
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- 05 合作与认可 ---------- */
.network-grid {
  margin-top: 34px;
  display: grid;
  gap: 30px;
}

.network-figure {
  margin: 0;
  border: 1px solid var(--scale);
  padding: 12px;
  background: var(--deep);
}

.network-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.4) brightness(0.88);
}

.network-copy p {
  font-size: 15.5px;
  color: var(--about-body);
  max-width: 56ch;
}

.network-stats {
  list-style: none;
  margin-top: 22px;
  border-top: 1px solid var(--scale);
}

.network-stats li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--scale);
  font-size: 14px;
  color: var(--mist);
}

.network-stats .mono {
  flex: 0 0 auto;
  min-width: 88px;
  font-size: 15px;
  color: var(--lime);
  letter-spacing: -0.01em;
}

/* ---------- 06 联络 ---------- */
.page-about .about-contact {
  background: var(--tier);
}

.contact-panel {
  display: grid;
  gap: 28px;
  padding: 30px 22px;
  border: 1px solid var(--scale);
  background: var(--ink);
}

.contact-title {
  margin-top: 12px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.contact-text {
  margin-top: 14px;
  max-width: 54ch;
  font-size: 15.5px;
  color: var(--about-body);
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-copy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--scale);
  background: var(--deep);
  color: var(--paper);
  font-family: var(--font-body);
  text-align: left;
  cursor: pointer;
  transition: border-color 150ms var(--ease), background 150ms var(--ease);
}

.contact-copy:hover,
.contact-copy:focus-visible {
  border-color: var(--lime);
  background: var(--tier);
}

.contact-copy .copy-btn-value {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: -0.01em;
  word-break: break-all;
}

.contact-copy .copy-btn-flag {
  flex: 0 0 auto;
  font-size: 12.5px;
  color: var(--mist);
  white-space: nowrap;
  transition: color 150ms var(--ease);
}

.contact-copy[data-copied] .copy-btn-flag {
  color: var(--lime);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .audience-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 26px;
  }

  .contact-panel {
    padding: 36px 30px;
  }

  .contact-actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }

  .contact-copy {
    width: auto;
    flex: 1 1 260px;
  }
}

@media (min-width: 900px) {
  .page-about section {
    padding: 78px 0;
  }

  .about-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 56px;
  }

  .about-hero-visual {
    padding: 24px 24px 18px;
  }

  .scope-lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scope-line {
    padding: 32px 30px 30px;
  }

  .team-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 24px;
    align-items: stretch;
  }

  .era-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .era-item {
    padding: 34px 22px 30px 20px;
    border-bottom: none;
    border-left: 1px solid var(--scale);
  }

  .era-item:first-child {
    border-left-color: var(--lime);
  }

  .era-item::before {
    left: 20px;
    top: -5px;
  }

  .era-figure img {
    aspect-ratio: 21 / 8;
  }

  .flow-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 24px;
  }

  .flow-step {
    padding-top: 56px;
  }

  .flow-arrow {
    display: block;
  }

  .flow-step:last-child .flow-arrow {
    display: none;
  }

  .flow-text {
    max-width: 26ch;
  }

  .network-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 46px;
    align-items: center;
  }

  .contact-panel {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: center;
    gap: 40px;
    padding: 44px 40px;
  }

  .contact-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-copy {
    width: 100%;
    flex: 0 0 auto;
  }
}

@media (min-width: 1440px) {
  .page-about {
    background-image: repeating-linear-gradient(
      to bottom,
      var(--scale) 0 1px,
      transparent 1px 32px
    );
    background-size: 1px 100%;
    background-repeat: no-repeat;
    background-position: left calc(50% - 700px) top;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}