.page-about {
  --about-violet-soft: rgba(75, 58, 122, .30);
  --about-violet-line: rgba(75, 58, 122, .55);
  --about-sand-soft: rgba(201, 123, 63, .18);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 28px 0 44px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -10%;
  width: 120%;
  height: 520px;
  background:
    radial-gradient(46% 52% at 72% 40%, rgba(75, 58, 122, .48), transparent 70%),
    radial-gradient(34% 40% at 96% 66%, rgba(201, 123, 63, .16), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 22px;
}

.page-about .about-hero__lead h1 {
  font-size: clamp(28px, 6.6vw, 52px);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 800;
  margin: 10px 0 0;
  color: var(--paper);
}

.page-about .about-hero__intro {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.95;
  color: #cfc8ba;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--card-bg);
  box-shadow: inset 0 0 0 1px rgba(242, 217, 140, .06), 0 18px 40px -28px rgba(0, 0, 0, .9);
  padding: 20px 18px 6px;
}

.page-about .about-hero__card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--gold), rgba(75, 58, 122, .7));
}

.page-about .about-hero__card-tag {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero__facts li:last-child {
  border-bottom: 0;
}

.page-about .about-hero__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--gold-hi);
  letter-spacing: .04em;
}

.page-about .about-hero__label {
  font-size: 13px;
  color: var(--muted);
  text-align: right;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0;
}

.page-about .about-glow {
  padding: 14px 0 8px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--r);
  object-fit: cover;
  background: var(--ink-800);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding: 48px 0;
}

.page-about .about-sec__head {
  max-width: 46em;
  margin-bottom: 28px;
}

.page-about .about-sec__head h2 {
  margin: 10px 0 0;
  font-size: clamp(22px, 4.4vw, 34px);
  line-height: 1.3;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-sec__lead {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.9;
  color: #bdb6a8;
}

.page-about .about-sec a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-about .about-sec a:hover {
  border-bottom-color: var(--gold);
}

/* ---------- 01 品牌起点 ---------- */
.page-about .about-origin {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .about-origin__body p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.95;
  color: #d3ccbe;
}

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

.page-about .about-origin__aside {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(21, 26, 36, .92), rgba(14, 17, 24, .92));
  padding: 18px;
}

.page-about .about-chipline {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-chipline:first-child {
  padding-top: 0;
}

.page-about .about-chipline__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--sand);
}

.page-about .about-chipline__val {
  font-size: 15px;
  color: var(--paper);
  line-height: 1.6;
}

.page-about .about-origin__hint {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-origin__hint a {
  color: var(--gold-hi);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

/* ---------- 02 服务覆盖 ---------- */
.page-about .about-sec--local {
  position: relative;
}

.page-about .about-local {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-local__block {
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--about-violet-line);
  border-radius: 0 var(--r) var(--r) 0;
  background: linear-gradient(120deg, rgba(75, 58, 122, .22), rgba(14, 17, 24, .6) 62%);
  padding: 18px 18px 20px;
}

.page-about .about-local__block h3 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-local__block p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: #c6bfb2;
}

.page-about .band {
  margin-top: 34px;
}

/* ---------- 03 版本时间线 ---------- */
.page-about .about-timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 28px;
}

.page-about .about-timeline__rail {
  display: none;
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  position: relative;
}

.page-about .about-timeline__item {
  scroll-margin-top: 120px;
  position: relative;
  padding-left: 18px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(75, 58, 122, .35));
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: -4px;
  top: 26px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 39, .14);
}

.page-about .about-vercard {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--card-bg);
  box-shadow: inset 0 0 0 1px rgba(242, 217, 140, .05);
  padding: 18px 18px 20px;
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}

.page-about .about-vercard:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: inset 0 0 0 1px rgba(242, 217, 140, .14), 0 16px 34px -26px rgba(0, 0, 0, .95);
}

.page-about .about-vercard__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .about-vercard__badge {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--gold);
  border-radius: 2px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--gold-hi);
  background: rgba(201, 162, 39, .08);
}

.page-about .about-vercard__year {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-about .about-vercard h3 {
  margin: 14px 0 10px;
  font-size: 18px;
  line-height: 1.55;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-vercard > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: #c4bdb0;
}

.page-about .about-vercard__points {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-vercard__points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: #b6ae9f;
}

.page-about .about-vercard__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 7px;
  height: 1px;
  background: var(--sand);
}

/* ---------- 04 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 26px;
}

.page-about .about-team__card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--card-bg);
  padding: 22px 18px 20px;
  overflow: hidden;
  transition: transform .28s ease, border-color .28s ease;
}

.page-about .about-team__card:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
}

.page-about .about-team__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
}

.page-about .about-team__card--violet::before { background: var(--violet); }
.page-about .about-team__card--teal::before { background: var(--teal); }
.page-about .about-team__card--sand::before { background: var(--sand); }

.page-about .about-team__num {
  margin: 0;
  font-size: 42px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--gold-hi);
}

.page-about .about-team__card h3 {
  margin: 10px 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-team__card p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: #c2bbae;
}

/* ---------- 05 运营节奏 ---------- */
.page-about .about-rhythm {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-rhythm__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-rhythm__key {
  margin: 0;
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--sand);
}

.page-about .about-rhythm__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: #d0c9bb;
}

.page-about .about-quote {
  margin: 28px 0 0;
  padding: 20px 20px 20px 26px;
  border-left: 3px solid var(--gold);
  background: linear-gradient(100deg, rgba(201, 162, 39, .10), rgba(14, 17, 24, 0) 70%);
}

.page-about .about-quote p {
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--paper);
  font-weight: 600;
}

.page-about .about-quote p::before {
  content: "\201C";
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  line-height: .8;
  color: var(--gold);
  margin-bottom: 6px;
}

.page-about .about-rhythm__link {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.page-about .about-rhythm__link a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

/* ---------- 06 适配协作 ---------- */
.page-about .about-eco {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-eco__item {
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  background: linear-gradient(160deg, rgba(31, 74, 68, .30), rgba(14, 17, 24, .7) 68%);
  padding: 18px;
}

.page-about .about-eco__num {
  margin: 0;
  font-size: 30px;
  line-height: 1;
  font-weight: 700;
  color: var(--gold-hi);
  letter-spacing: -.01em;
}

.page-about .about-eco__item h3 {
  margin: 10px 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-eco__item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: #bcb5a7;
}

.page-about .about-sec--eco .band {
  margin-top: 30px;
}

/* ---------- 07 用户反馈 ---------- */
.page-about .about-feedback {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .about-feedback__bars {
  display: grid;
  gap: 20px;
}

.page-about .about-feedback__label {
  margin: 0 0 8px;
  font-size: 14px;
  color: #cfc8ba;
}

.page-about .about-feedback__track {
  position: relative;
  height: 8px;
  border-radius: 2px;
  background: rgba(110, 85, 24, .18);
  overflow: hidden;
}

.page-about .about-feedback__fill {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  border-radius: 2px;
}

.page-about .about-feedback__fill--teal { background: linear-gradient(90deg, #1F4A44, #3F8F6E); }
.page-about .about-feedback__fill--violet { background: linear-gradient(90deg, #4B3A7A, #7A62B8); }
.page-about .about-feedback__fill--gold { background: linear-gradient(90deg, #6E5518, #C9A227, #F2D98C); }

.page-about .about-feedback__pct {
  margin: 8px 0 0;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-about .about-feedback__note p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
  color: #c6bfb2;
}

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

/* ---------- 结尾 ---------- */
.page-about .about-sec--closing {
  padding-bottom: 60px;
}

.page-about .about-closing {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background:
    radial-gradient(90% 120% at 8% 0%, rgba(75, 58, 122, .30), transparent 62%),
    linear-gradient(180deg, rgba(21, 26, 36, .95), rgba(8, 9, 13, .95));
  padding: 26px 20px;
}

.page-about .about-closing__body h2 {
  margin: 10px 0 12px;
  font-size: clamp(21px, 4vw, 28px);
  line-height: 1.35;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-closing__body p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: #c6bfb2;
}

.page-about .about-closing__actions {
  display: grid;
  gap: 10px;
  align-content: start;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-about .about-local,
  .page-about .about-team,
  .page-about .about-eco {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-rhythm__row {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 30px;
  }

  .page-about .about-closing {
    padding: 34px 30px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 40px 0 60px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: 48px;
    align-items: end;
    margin-top: 30px;
  }

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

  .page-about .about-timeline {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 38px;
    margin-top: 36px;
  }

  .page-about .about-timeline__rail {
    display: block;
    position: sticky;
    top: var(--rail-top);
    align-self: start;
  }

  .page-about .about-timeline__rail-link {
    display: block;
    padding: 10px 0 10px 12px;
    border-left: 1px solid var(--line);
    text-decoration: none;
    transition: border-color .25s ease, background-color .25s ease;
  }

  .page-about .about-timeline__rail-link span {
    display: block;
    font-size: 12px;
    letter-spacing: .12em;
    color: var(--muted);
  }

  .page-about .about-timeline__rail-link em {
    display: block;
    margin-top: 2px;
    font-style: normal;
    font-size: 15px;
    font-weight: 700;
    color: #8e887c;
  }

  .page-about .about-timeline__rail-link:hover,
  .page-about .about-timeline__rail-link:focus-visible {
    border-left-color: var(--gold);
    background: linear-gradient(90deg, rgba(201, 162, 39, .10), transparent);
  }

  .page-about .about-timeline__rail-link:hover em,
  .page-about .about-timeline__rail-link:focus-visible em {
    color: var(--gold-hi);
  }

  .page-about .about-timeline__item {
    padding-left: 26px;
  }

  .page-about .about-timeline__item:nth-child(even) {
    margin-left: 38px;
  }

  .page-about .about-vercard {
    padding: 22px 24px 24px;
  }

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

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

  .page-about .about-feedback {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 44px;
  }

  .page-about .about-closing {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 36px;
    align-items: center;
    padding: 40px 38px;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-vercard,
  .page-about .about-team__card {
    transition: border-color .2s ease;
  }

  .page-about .about-vercard:hover,
  .page-about .about-team__card:hover {
    transform: none;
  }
}

.page-about {
  --w: 1rem;
}