.page-about {
  --about-pad-y: clamp(38px, 6vw, 86px);
  --about-gap: clamp(18px, 2.6vw, 34px);
  --about-hair: 1px solid var(--line-cool);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4.2vw, 56px) 0 clamp(32px, 5.2vw, 72px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -22%;
  right: -14%;
  width: min(600px, 72vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(closest-side, rgba(37, 240, 224, 0.13), rgba(37, 240, 224, 0) 70%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-hero__crumb {
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
}

.page-about .about-hero h1 {
  margin: 0 0 clamp(14px, 1.8vw, 20px);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-hero__lede {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  max-width: 60ch;
  color: rgba(248, 250, 251, 0.82);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: clamp(24px, 3.2vw, 38px);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line-cool);
  border: var(--about-hair);
}

.page-about .about-facts__row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: rgba(11, 42, 56, 0.72);
  transition: background-color 0.2s ease;
}

.page-about .about-facts__row:hover,
.page-about .about-facts__row:focus-within {
  background: rgba(18, 58, 76, 0.92);
}

.page-about .about-facts__key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray-2);
}

.page-about .about-facts__val {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 700;
  color: var(--white);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(155deg, rgba(37, 240, 224, 0.09), rgba(217, 164, 65, 0.07));
}

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

.page-about .about-hero__caption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--gray-2);
  border-top: 1px solid var(--line-cool);
}

/* ---------- 章节索引 ---------- */
.page-about .about-toc {
  padding: 16px 0;
  border-top: var(--about-hair);
  border-bottom: var(--about-hair);
}

.page-about .about-toc__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}

.page-about .about-toc__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 13px;
  color: rgba(248, 250, 251, 0.78);
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  border-color: var(--line-cyan);
  background: rgba(37, 240, 224, 0.08);
  color: var(--white);
}

.page-about .about-toc__num {
  font-size: 11px;
  color: var(--gold);
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding: var(--about-pad-y) 0;
  scroll-margin-top: clamp(84px, 12vh, 132px);
}

.page-about .about-section__head {
  max-width: 78ch;
  margin-bottom: clamp(24px, 3.4vw, 44px);
  padding-bottom: clamp(16px, 2vw, 24px);
  border-bottom: var(--about-hair);
}

.page-about .about-section__head .section-head__num {
  display: block;
  margin: 0 0 10px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  color: var(--gold);
  transition: color 0.2s ease;
}

.page-about .about-section:target .section-head__num {
  color: var(--cyan);
}

.page-about .about-section__head .section-head__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .about-section__head .section-head__note {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(14px, 1.35vw, 16px);
  line-height: 1.7;
  opacity: 0.82;
}

/* ---------- 01 品牌在做什么 ---------- */
.page-about .about-purpose {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .about-purpose__body p {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.8;
}

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

.page-about .about-purpose__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(107, 122, 133, 0.28);
  border: 1px solid rgba(107, 122, 133, 0.28);
}

.page-about .about-purpose__item {
  padding: 18px 18px 20px;
  background: var(--paper);
  border-left: 2px solid transparent;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .about-purpose__item:hover,
.page-about .about-purpose__item:focus-within {
  border-left-color: var(--gold);
  background: var(--paper-2);
}

.page-about .about-purpose__itemTitle {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink-800);
}

.page-about .about-purpose__itemText {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-700);
}

/* ---------- 02 场景索引 ---------- */
.page-about .about-scenes {
  border-top: var(--about-hair);
}

.page-about .about-scene {
  border-bottom: var(--about-hair);
  transition: background-color 0.2s ease;
}

.page-about .about-scene:hover,
.page-about .about-scene:focus-within {
  background: rgba(37, 240, 224, 0.06);
}

.page-about .about-scene .index-item__tag {
  color: var(--gold);
}

.page-about .about-scene .index-item__title {
  font-family: var(--font-head);
  font-weight: 700;
}

/* ---------- 03 团队与服务节奏 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-team__panel {
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin-bottom: clamp(18px, 2.4vw, 26px);
  background: var(--line-cool);
  border: var(--about-hair);
}

.page-about .about-stat {
  padding: 16px 14px;
  background: rgba(6, 26, 36, 0.42);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-stat:hover,
.page-about .about-stat:focus-within {
  background: rgba(37, 240, 224, 0.09);
  box-shadow: inset 0 0 0 1px var(--line-cyan);
}

.page-about .about-stat__num {
  margin: 0 0 6px;
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-about .about-stat__label {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--gray-2);
}

.page-about .about-team__text {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(248, 250, 251, 0.84);
}

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

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid var(--line-cool);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(6, 26, 36, 0.5);
}

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

.page-about .about-team__caption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--gray-2);
  border-top: 1px solid var(--line-cool);
}

/* ---------- 04 版本与资料同步 ---------- */
.page-about .about-sync {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-sync__figure {
  margin: 0;
  border: 1px solid rgba(107, 122, 133, 0.4);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
}

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

.page-about .about-sync__caption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--gray);
  border-top: 1px solid rgba(107, 122, 133, 0.3);
}

.page-about .about-sync__body p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

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

.page-about .about-sync__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 05 兼容与覆盖 ---------- */
.page-about .about-compat {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: start;
}

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

.page-about .about-compat__item {
  padding: 16px 18px;
  background: rgba(11, 42, 56, 0.6);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-compat__item:hover,
.page-about .about-compat__item:focus-within {
  background: rgba(18, 58, 76, 0.88);
  box-shadow: inset 2px 0 0 0 var(--cyan);
}

.page-about .about-compat__name {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .about-compat__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(248, 250, 251, 0.78);
}

.page-about .about-compat__note {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid rgba(217, 164, 65, 0.45);
  border-radius: var(--radius);
}

.page-about .about-compat__noteNum {
  margin: 0 0 4px;
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-about .about-compat__noteTitle {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--ink-800);
}

.page-about .about-compat__noteText {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-700);
}

/* ---------- 06 选择理由 ---------- */
.page-about .about-reasons {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .about-reason {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line-cool);
  border-top: 3px solid var(--gold);
  border-radius: var(--radius);
  background: rgba(6, 26, 36, 0.5);
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-reason:hover,
.page-about .about-reason:focus-within {
  border-top-color: var(--cyan);
  background: rgba(18, 58, 76, 0.7);
  transform: translateY(-2px);
}

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

.page-about .about-reason__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 1.8vw, 20px);
  color: var(--white);
}

.page-about .about-reason__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(248, 250, 251, 0.8);
}

.page-about .about-why__more {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
}

/* ---------- 结尾行动条 ---------- */
.page-about .about-cta {
  padding: clamp(34px, 5vw, 64px) 0;
  border-top: var(--about-hair);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 30px);
  align-items: center;
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.25;
  color: var(--white);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(248, 250, 251, 0.78);
}

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

/* ---------- 焦点可见性 ---------- */
.page-about a:focus-visible,
.page-about .about-toc__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-about .about-purpose {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .about-purpose__list {
    grid-template-columns: 1fr;
  }

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

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-about .about-compat {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }

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

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

/* ---------- 桌面 ---------- */
@media (min-width: 980px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-sync {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(28px, 3.6vw, 48px);
  }

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

  .page-about .about-reasons.stagger > .about-reason:nth-child(2) {
    transform: translateY(26px);
  }

  .page-about .about-reasons.stagger > .about-reason:nth-child(2):hover,
  .page-about .about-reasons.stagger > .about-reason:nth-child(2):focus-within {
    transform: translateY(22px);
  }

  .page-about .about-reasons.stagger > .about-reason:nth-child(3) {
    transform: translateY(52px);
  }

  .page-about .about-reasons.stagger > .about-reason:nth-child(3):hover,
  .page-about .about-reasons.stagger > .about-reason:nth-child(3):focus-within {
    transform: translateY(48px);
  }

  .page-about .about-why__more {
    margin-top: clamp(78px, 6vw, 96px);
  }
}

/* ---------- 减弱动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
  }

  .page-about .about-reason,
  .page-about .about-reasons.stagger > .about-reason:nth-child(2),
  .page-about .about-reasons.stagger > .about-reason:nth-child(3) {
    transform: none !important;
  }
}