/* ===== 品牌总览 / overview ===== */

.page-about {
  display: block;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 26px 0 54px;
  background:
    radial-gradient(115% 85% at 6% -22%, rgba(33, 243, 224, .16), transparent 62%),
    radial-gradient(92% 82% at 102% 2%, rgba(255, 61, 87, .13), transparent 58%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(33, 243, 224, .5), transparent);
  pointer-events: none;
}

.page-about .about-hero__inner {
  margin-top: 26px;
  max-width: 880px;
}

.page-about .about-hero__inner h1 {
  margin: 0;
  font-size: clamp(30px, 7.4vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 900;
  max-width: 17ch;
  overflow-wrap: break-word;
}

.page-about .hl {
  color: var(--neon);
  text-shadow: 0 0 24px rgba(33, 243, 224, .42);
}

.page-about .about-hero__inner .lede {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 关键数据条 */
.page-about .about-figures {
  list-style: none;
  margin: 42px 0 0;
  padding: 22px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 18px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-figure {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(23px, 5.6vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
  overflow-wrap: break-word;
}

.page-about .stat-label {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 通用标题微调 ---------- */
.page-about .section-title {
  letter-spacing: -0.02em;
  max-width: 26ch;
}

.page-about .section-sub {
  margin-top: 12px;
  max-width: 62ch;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  padding-top: 8px;
}

.page-about .about-timeline__banner {
  margin: 0 0 44px;
  border-radius: var(--r-xl);
  overflow: hidden;
}

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

.page-about .tl-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
  display: grid;
  gap: 0;
}

.page-about .tl-list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, rgba(33, 243, 224, .8) 0%, rgba(33, 243, 224, .06) 100%);
}

.page-about .tl-item {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 22px 0 24px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 30px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--neon);
  box-shadow: 0 0 0 4px rgba(33, 243, 224, .12);
  transition: box-shadow .2s var(--ease), background-color .2s var(--ease);
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--neon);
  line-height: 1.2;
}

.page-about .tl-body h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .tl-body p {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-about .tl-facts {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .tl-facts li {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--muted);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  padding: 5px 12px;
  white-space: nowrap;
}

@media (hover: hover) and (pointer: fine) {
  .page-about .tl-facts {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .28s var(--ease), opacity .28s var(--ease), margin-top .28s var(--ease);
    margin-top: 0;
  }

  .page-about .tl-item:hover .tl-facts,
  .page-about .tl-item:focus-within .tl-facts {
    max-height: 110px;
    opacity: 1;
    margin-top: 14px;
  }

  .page-about .tl-item:hover::before,
  .page-about .tl-item:focus-within::before {
    background: var(--neon);
    box-shadow: 0 0 0 6px rgba(33, 243, 224, .18);
  }
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-split {
  display: grid;
  gap: 30px;
}

.page-about .about-split__text .section-title {
  margin-top: 4px;
}

.page-about .about-split__text > p {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .about-checks {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-checks li {
  position: relative;
  padding-left: 22px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-about .about-checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 10px rgba(33, 243, 224, .55);
}

.page-about .about-split__media {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
}

/* ---------- 团队与合作 双列 ---------- */
.page-about .about-duo {
  display: grid;
  gap: 22px;
}

.page-about .duo-card {
  border-radius: var(--r-xl);
  padding: 26px 22px;
}

.page-about .duo-card--panel {
  background: linear-gradient(158deg, rgba(26, 36, 80, .86) 0%, rgba(14, 20, 48, .92) 100%);
  border: 1px solid var(--line);
}

.page-about .duo-card--plain {
  background: rgba(14, 20, 48, .34);
  border: 1px solid var(--line-soft);
}

.page-about .duo-card h3 {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .duo-card > p {
  margin: 0 0 14px;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-about .duo-roster {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .duo-roster li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num role"
    "num desc";
  gap: 2px 14px;
  align-items: baseline;
}

.page-about .duo-num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
}

.page-about .duo-role {
  grid-area: role;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
}

.page-about .duo-desc {
  grid-area: desc;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .duo-card__media {
  margin: 24px 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .duo-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 荣誉条 ---------- */
.page-about .honor-strip {
  display: grid;
  gap: 26px;
  padding: 26px 0 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .honor-lead {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.page-about .honor-lead p {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  max-width: 24ch;
}

.page-about .honor-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 18px;
}

.page-about .honor-stats li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

/* ---------- 结尾 CTA ---------- */
.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
  padding: 28px 22px;
}

.page-about .about-cta__inner h2 {
  margin: 0;
  font-size: clamp(21px, 4.2vw, 30px);
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-about .about-cta__inner p {
  margin: 12px 0 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-soft);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero {
    padding: 32px 0 64px;
  }

  .page-about .about-hero__inner .lede {
    font-size: 17px;
  }

  .page-about .duo-card {
    padding: 30px 28px;
  }

  .page-about .about-cta__inner {
    padding: 32px 30px;
  }
}

@media (min-width: 860px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .tl-item {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
    padding: 26px 0 28px;
  }

  .page-about .tl-item::before {
    left: -26px;
    top: 32px;
  }

  .page-about .tl-year {
    font-size: 20px;
    padding-top: 2px;
  }

  .page-about .about-duo {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
    align-items: start;
  }

  .page-about .honor-strip {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 40px;
    align-items: center;
    padding-top: 32px;
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 36px;
    padding: 36px 40px;
  }
}

@media (min-width: 960px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: 52px;
    align-items: center;
  }

  .page-about .tl-item {
    grid-template-columns: 160px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-item::before,
  .page-about .tl-facts {
    transition: none;
  }
}