/* ===== 品牌与团队页 · page-about ===== */
.page-about {
  --ab-gap: clamp(1.5rem, 4vw, 2.75rem);
  --ab-hair: rgba(138, 148, 166, 0.3);
  --ab-hair-soft: rgba(138, 148, 166, 0.18);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(2.5rem, 8vw, 5.5rem) clamp(2rem, 5vw, 3.5rem);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -10% -5% auto -5%;
  height: 130%;
  pointer-events: none;
  background:
    radial-gradient(circle at 82% 12%, rgba(0, 229, 199, 0.13), transparent 42%),
    radial-gradient(circle at 8% 78%, rgba(255, 107, 53, 0.09), transparent 38%);
}

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

.page-about .about-hero__title {
  margin-block: 1rem 1.25rem;
  max-width: 17ch;
}

.page-about .about-hero__lede {
  max-width: 60ch;
  margin: 0;
}

/* ---------- 数据摘录条 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--ab-hair);
  border-left: 1px solid var(--ab-hair);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.3rem 1.15rem;
  border-right: 1px solid var(--ab-hair);
  border-bottom: 1px solid var(--ab-hair);
  background: linear-gradient(180deg, rgba(0, 229, 199, 0.06), transparent 70%);
  transition: background 0.25s var(--ease);
}

.page-about .about-stat:hover {
  background: linear-gradient(180deg, rgba(0, 229, 199, 0.14), transparent 75%);
}

.page-about .about-stat__num {
  font-family: var(--font-num);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-stat__lab {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 区块标题组 ---------- */
.page-about .about-sec-head {
  max-width: 46rem;
  margin-bottom: clamp(1.75rem, 4.5vw, 2.75rem);
}

.page-about .about-sec-head .wb-title {
  margin-block: 0.7rem 0.9rem;
}

.page-about .about-lede {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--muted);
}

.wb-section--paper .page-about .about-lede,
.page-about .wb-section--paper .about-lede {
  color: rgba(16, 24, 32, 0.68);
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-history__visual {
  margin: 0 0 clamp(2rem, 5vw, 3rem);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2.6vw, 1.6rem);
}

.page-about .about-tl {
  position: relative;
  padding-left: 3.25rem;
  outline: none;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 1.05rem;
  top: 2.4rem;
  bottom: calc(-1 * clamp(1rem, 2.6vw, 1.6rem) - 0.5rem);
  width: 1px;
  background: var(--ab-hair-soft);
}

.page-about .about-tl:last-child::before {
  display: none;
}

.page-about .about-tl__idx {
  position: absolute;
  left: 0;
  top: 0;
  width: 2.125rem;
  height: 2.125rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink-2);
  border: 1px solid var(--ab-hair);
  font-family: var(--font-num);
  font-style: italic;
  font-weight: 900;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  transition: color 0.22s var(--ease), background 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-tl:hover .about-tl__idx,
.page-about .about-tl:focus .about-tl__idx,
.page-about .about-tl:focus-within .about-tl__idx {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-about .about-tl--now .about-tl__idx {
  border-color: var(--orange);
  color: var(--orange);
}

.page-about .about-tl--now:hover .about-tl__idx,
.page-about .about-tl--now:focus .about-tl__idx {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

.page-about .about-tl__body {
  border: 1px solid var(--ab-hair-soft);
  border-radius: var(--radius);
  padding: clamp(1.05rem, 3vw, 1.5rem);
  background: var(--ink-2);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .about-tl:hover .about-tl__body,
.page-about .about-tl:focus .about-tl__body,
.page-about .about-tl:focus-within .about-tl__body {
  border-color: rgba(0, 229, 199, 0.45);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.page-about .about-tl--now .about-tl__body {
  background: linear-gradient(140deg, rgba(255, 107, 53, 0.1), transparent 62%), var(--ink-2);
}

.page-about .about-tl--now:hover .about-tl__body,
.page-about .about-tl--now:focus .about-tl__body {
  border-color: rgba(255, 107, 53, 0.5);
}

.page-about .about-tl:focus-visible .about-tl__body {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .about-tl__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--light);
}

.page-about .about-tl__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(247, 249, 252, 0.74);
}

.page-about .about-tl__more {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
  transition: max-height 0.32s var(--ease), opacity 0.24s var(--ease), margin-top 0.32s var(--ease);
}

.page-about .about-tl:hover .about-tl__more,
.page-about .about-tl:focus .about-tl__more,
.page-about .about-tl:focus-within .about-tl__more {
  max-height: 9rem;
  opacity: 1;
  margin-top: 0.6rem;
}

@media (hover: none) {
  .page-about .about-tl__more {
    max-height: none;
    opacity: 1;
    margin-top: 0.6rem;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  align-items: start;
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(16, 24, 32, 0.12);
  border: 1px solid rgba(16, 24, 32, 0.12);
}

.page-about .about-role {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: clamp(1rem, 3vw, 1.35rem);
  background: var(--paper);
}

.page-about .about-role__n {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(1.5rem, 4vw, 1.95rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
  min-width: 2.6ch;
}

.page-about .about-role__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  color: var(--dark);
}

.page-about .about-role__body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: rgba(16, 24, 32, 0.72);
}

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

.page-about .about-team__figure .wb-frame {
  margin: 0;
}

/* ---------- 内容生态 ---------- */
.page-about .about-eco__grid {
  align-items: start;
}

.page-about .about-eco__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-about .about-eco__card {
  border: 1px solid var(--ab-hair-soft);
  border-radius: var(--radius);
  padding: clamp(1.05rem, 3vw, 1.45rem);
  background: linear-gradient(150deg, rgba(0, 229, 199, 0.07), transparent 62%);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease), background 0.22s var(--ease);
}

.page-about .about-eco__card:hover {
  border-color: rgba(0, 229, 199, 0.45);
  transform: translateY(-2px);
  background: linear-gradient(150deg, rgba(0, 229, 199, 0.13), transparent 68%);
}

.page-about .about-eco__card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--light);
}

.page-about .about-eco__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: rgba(247, 249, 252, 0.72);
}

.page-about .about-eco__figure {
  margin: 1.25rem 0 0;
}

/* ---------- 区域与资质 ---------- */
.page-about .about-region__grid {
  align-items: start;
}

.page-about .about-region__blocks {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.25rem);
}

.page-about .about-region__block {
  border-left: 2px solid var(--orange);
  padding-left: clamp(1rem, 2.5vw, 1.4rem);
}

.page-about .about-region__num {
  margin: 0;
  font-family: var(--font-num);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(2.4rem, 7vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--orange);
}

.page-about .about-region__title {
  margin: 0.5rem 0 0.65rem;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--light);
}

.page-about .about-region__block p:last-child {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(247, 249, 252, 0.72);
}

.page-about .about-region__facts {
  margin: 1.5rem 0 0;
  padding: clamp(1rem, 3vw, 1.35rem);
  border: 1px solid var(--ab-hair-soft);
  border-radius: var(--radius);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.1rem;
  background: var(--ink-2);
}

.page-about .about-region__facts dt {
  margin-top: 0.85rem;
  font-family: var(--font-num);
  font-style: italic;
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-region__facts dt:first-of-type {
  margin-top: 0;
}

.page-about .about-region__facts dd {
  margin: 0.2rem 0 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--light);
}

/* ---------- 长期做法 ---------- */
.page-about .about-principles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(16, 24, 32, 0.12);
  border: 1px solid rgba(16, 24, 32, 0.12);
}

.page-about .about-principles > li {
  position: relative;
  padding: clamp(1.1rem, 3vw, 1.55rem);
  background: var(--paper-2);
  transition: background 0.22s var(--ease);
}

.page-about .about-principles > li:hover {
  background: var(--paper);
}

.page-about .about-principles__n {
  display: block;
  font-family: var(--font-num);
  font-style: italic;
  font-weight: 900;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--magenta);
  margin-bottom: 0.6rem;
}

.page-about .about-principles h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  color: var(--dark);
}

.page-about .about-principles p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: rgba(16, 24, 32, 0.72);
}

/* ---------- 页尾行动 ---------- */
.page-about .about-cta {
  border-top: 1px solid var(--ab-hair-soft);
  background: linear-gradient(125deg, var(--ink) 0%, var(--ink-3) 58%, #16233f 100%);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: center;
}

.page-about .about-cta__text .wb-title {
  margin: 0 0 0.85rem;
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 48ch;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(247, 249, 252, 0.72);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 网格兜底 ---------- */
@media (max-width: 899px) {
  .page-about .wb-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .wb-col-main,
  .page-about .wb-col-aside,
  .page-about .wb-col-edge {
    grid-column: 1 / -1;
  }
}

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-tl {
    padding-left: 4rem;
  }

  .page-about .about-tl__idx {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 0.8125rem;
  }

  .page-about .about-tl::before {
    left: 1.25rem;
  }

  .page-about .about-region__facts {
    margin-top: 0;
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: 1.25rem;
    row-gap: 0.1rem;
    align-items: baseline;
  }

  .page-about .about-region__facts dt {
    margin-top: 0.85rem;
  }

  .page-about .about-region__facts dt:first-of-type {
    margin-top: 0;
  }

  .page-about .about-eco__figure {
    margin-top: 0;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: end;
  }

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

@media (min-width: 1100px) {
  .page-about .about-hero__title {
    max-width: 20ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__body,
  .page-about .about-tl__idx,
  .page-about .about-eco__card,
  .page-about .about-stat {
    transition: none;
  }
}