/* ============================================
   品牌档案 /profile/ —— 页面专属样式
   作用域：.page-about
   ============================================ */

.page-about {
  --about-line: rgba(199, 208, 218, 0.16);
  --about-line-soft: rgba(199, 208, 218, 0.09);
  --about-neon-soft: rgba(34, 240, 200, 0.55);
  --about-panel: linear-gradient(180deg, rgba(18, 44, 74, 0.9), rgba(11, 27, 46, 0.94));
  --about-gap: clamp(20px, 3.4vw, 34px);
}

/* ---------- 面包屑落位 ---------- */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5em;
  padding-top: clamp(88px, 11vw, 118px);
  padding-bottom: 4px;
  font-size: 0.82rem;
  color: var(--muted);
}

.page-about .breadcrumb__item a {
  color: var(--muted);
  text-decoration: none;
}

.page-about .breadcrumb__item a:hover,
.page-about .breadcrumb__item a:focus-visible {
  color: var(--neon);
}

/* ---------- 首屏：竖排刊头 + 正文 + 破格竖幅 ---------- */
.page-about .page-about-hero {
  padding-top: clamp(6px, 1.6vw, 16px);
}

.page-about .page-about-hero__wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

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

.page-about .page-about-hero__railtext {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.42em;
  color: var(--silver);
}

.page-about .page-about-hero__railline {
  flex: 1 1 auto;
  width: 2px;
  min-height: 100px;
  background: linear-gradient(180deg, var(--neon), rgba(34, 240, 200, 0));
  border-radius: 2px;
}

.page-about .page-about-hero__rayear {
  writing-mode: vertical-rl;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-about .page-about-hero__title {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.15rem, 8.4vw, 4.3rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--white);
  max-width: 22ch;
}

.page-about .page-about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 12px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--about-line);
}

.page-about .page-about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 13px;
  border-left: 2px solid var(--about-neon-soft);
}

.page-about .page-about-hero__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(1.45rem, 4.4vw, 2.05rem);
  line-height: 1;
  color: var(--neon);
}

.page-about .page-about-hero__unit {
  font-size: 0.86rem;
  color: var(--white);
  line-height: 1.35;
}

.page-about .page-about-hero__cap {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

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

.page-about .page-about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  max-height: 300px;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-about .page-about-hero__figure .img-frame__caption {
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 为谁准备 ---------- */
.page-about .page-about-serve__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .page-about-serve__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--about-panel);
  border: 1px solid var(--about-line);
  transition: border-color 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.page-about .page-about-serve__card:hover,
.page-about .page-about-serve__card:focus-within {
  border-color: var(--about-neon-soft);
  box-shadow: var(--shadow-glow);
}

.page-about .page-about-serve__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.18rem;
  line-height: 1.35;
  color: var(--white);
}

.page-about .page-about-serve__card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .page-about-serve__card .btn {
  margin-top: auto;
}

/* ---------- 资料库成长时间轴 ---------- */
.page-about .page-about-growth__stage {
  position: relative;
  margin-top: clamp(30px, 5vw, 54px);
}

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

.page-about .page-about-growth__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(22px, 3vw, 32px);
  position: relative;
  z-index: 1;
}

.page-about .page-about-growth__node {
  position: relative;
  padding-left: 30px;
  display: grid;
  gap: 10px;
}

.page-about .page-about-growth__node::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 20px;
  bottom: -26px;
  width: 1px;
  background: linear-gradient(180deg, var(--about-line), rgba(199, 208, 218, 0));
}

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

.page-about .page-about-growth__dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid var(--neon);
  background: var(--sea-deep);
  box-shadow: 0 0 0 4px rgba(34, 240, 200, 0.1);
}

.page-about .page-about-growth__phase {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-about .page-about-growth__panel {
  padding: clamp(15px, 2.4vw, 22px);
  background: var(--about-panel);
  border: 1px solid var(--about-line);
  border-left: 2px solid rgba(34, 240, 200, 0.45);
}

.page-about .page-about-growth__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--white);
}

.page-about .page-about-growth__panel p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .page-about-growth__metric {
  margin-top: 12px !important;
  display: inline-block;
  padding: 5px 11px;
  border: 1px solid rgba(34, 240, 200, 0.35);
  border-radius: var(--pill);
  font-size: 0.78rem !important;
  letter-spacing: 0.04em;
  color: var(--neon) !important;
}

.page-about .page-about-growth__metric .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* ---------- 四道工序 ---------- */
.page-about .page-about-process__steps {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .page-about-process__step {
  position: relative;
  display: grid;
  gap: 9px;
  padding: clamp(18px, 2.6vw, 24px);
  background: linear-gradient(170deg, rgba(14, 58, 70, 0.55), rgba(11, 27, 46, 0.9));
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color 0.25s var(--ease-out);
}

.page-about .page-about-process__step:hover {
  border-color: rgba(34, 240, 200, 0.45);
}

.page-about .page-about-process__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--brand);
  letter-spacing: 0.02em;
}

.page-about .page-about-process__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.06rem;
  color: var(--white);
}

.page-about .page-about-process__step p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .page-about-process__role {
  justify-self: start;
  margin-top: 4px;
  padding: 3px 10px;
  border-radius: var(--pill);
  background: rgba(124, 92, 255, 0.16);
  border: 1px solid rgba(124, 92, 255, 0.4);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--violet);
}

.page-about .page-about-process__figure {
  margin: clamp(28px, 4.4vw, 48px) 0 0;
}

.page-about .page-about-process__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--about-line);
}

.page-about .page-about-process__figure .img-frame__caption {
  margin-top: 12px;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 天津坐标 ---------- */
.page-about .page-about-tianjin__wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

.page-about .page-about-tianjin__list {
  list-style: none;
  margin: clamp(22px, 3.2vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .page-about-tianjin__list li {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .page-about-tianjin__list li:last-child {
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .page-about-tianjin__list strong {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--neon);
}

.page-about .page-about-tianjin__list span {
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .page-about-tianjin__aside {
  padding: clamp(22px, 3vw, 32px);
  background: linear-gradient(150deg, rgba(255, 74, 28, 0.14), rgba(11, 27, 46, 0.92) 62%);
  border: 1px solid rgba(255, 74, 28, 0.3);
}

.page-about .page-about-tianjin__asideLabel {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.24em;
  color: var(--muted);
}

.page-about .page-about-tianjin__asideCity {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 9vw, 3.6rem);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--brand);
}

.page-about .page-about-tianjin__asideNote {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 团队分工 ---------- */
.page-about .page-about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .page-about-team__card {
  display: grid;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--about-panel);
  border: 1px solid var(--about-line);
  transition: border-color 0.25s var(--ease-out);
}

.page-about .page-about-team__card:hover {
  border-color: rgba(124, 92, 255, 0.5);
}

.page-about .page-about-team__count {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
}

.page-about .page-about-team__role {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.14rem;
  color: var(--white);
}

.page-about .page-about-team__card p:last-child {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.76;
  color: var(--silver);
}

/* ---------- 版本迭代 ---------- */
.page-about .page-about-versions__wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

.page-about .page-about-versions__list {
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  position: relative;
}

.page-about .page-about-versions__item {
  display: grid;
  grid-template-columns: 5.4rem minmax(0, 1fr);
  align-items: baseline;
  gap: 14px;
  padding: 12px 14px;
  border: 1px solid var(--about-line-soft);
  border-left: 2px solid rgba(199, 208, 218, 0.28);
  background: rgba(18, 44, 74, 0.4);
}

.page-about .page-about-versions__item--now {
  border-color: rgba(34, 240, 200, 0.45);
  border-left-color: var(--brand);
  background: linear-gradient(100deg, rgba(255, 74, 28, 0.16), rgba(11, 27, 46, 0.7));
}

.page-about .page-about-versions__tag {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.page-about .page-about-versions__item--now .page-about-versions__tag {
  color: var(--neon);
}

.page-about .page-about-versions__text {
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--silver);
}

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

.page-about .page-about-versions__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--about-line);
}

.page-about .page-about-versions__figure .img-frame__caption {
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 合作共建 ---------- */
.page-about .page-about-partner__panel {
  padding: clamp(24px, 4vw, 46px);
  background: linear-gradient(160deg, rgba(18, 44, 74, 0.95), rgba(5, 11, 20, 0.96));
  border: 1px solid rgba(34, 240, 200, 0.28);
}

.page-about .page-about-partner__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  margin: clamp(22px, 3.4vw, 36px) 0 0;
}

.page-about .page-about-partner__cell {
  padding: 18px 0;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .page-about-partner__cell:last-child {
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .page-about-partner__cell h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--white);
}

.page-about .page-about-partner__cell p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--silver);
}

.page-about .page-about-partner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 34px);
}

.page-about .page-about-partner__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px dashed rgba(199, 208, 218, 0.22);
}

.page-about .page-about-partner__mail {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  color: var(--white);
  word-break: break-all;
}

/* ---------- 平板 ---------- */
@media (min-width: 620px) {
  .page-about .page-about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .page-about-serve__card--lift {
    grid-column: span 2;
  }

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

  .page-about .page-about-process__step:nth-child(even) {
    margin-top: 24px;
  }

  .page-about .page-about-partner__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 26px;
  }

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

/* ---------- 桌面：侧栏轨道留白 + 斜向时间轴 ---------- */
@media (min-width: 940px) {
  .page-about .page-about-hero__wrap {
    grid-template-columns: 62px minmax(0, 1fr) minmax(230px, 320px);
    gap: clamp(28px, 3.4vw, 52px);
  }

  .page-about .page-about-hero__rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    padding-top: 6px;
    min-height: 340px;
  }

  .page-about .page-about-hero__figure img {
    aspect-ratio: 8 / 11;
    max-height: none;
  }

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

  .page-about .page-about-serve__card--lift {
    grid-column: auto;
    margin-top: 34px;
  }

  .page-about .page-about-serve__card:last-child {
    margin-top: 68px;
  }

  .page-about .page-about-growth__slant {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
  }

  .page-about .page-about-growth__node:nth-child(1) { margin-left: 0; }
  .page-about .page-about-growth__node:nth-child(2) { margin-left: 3.4%; }
  .page-about .page-about-growth__node:nth-child(3) { margin-left: 6.8%; }
  .page-about .page-about-growth__node:nth-child(4) { margin-left: 10.2%; }
  .page-about .page-about-growth__node:nth-child(5) { margin-left: 13.6%; }

  .page-about .page-about-growth__panel {
    max-width: 62ch;
  }

  .page-about .page-about-tianjin__wrap {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
    gap: clamp(30px, 4vw, 58px);
  }

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

  .page-about .page-about-team__card--offset {
    margin-top: 40px;
  }

  .page-about .page-about-versions__wrap {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-about .page-about-versions__figure {
    margin-top: 76px;
  }

  .page-about .page-about-process__figure {
    max-width: 1000px;
  }
}

/* ---------- 大屏微调 ---------- */
@media (min-width: 1240px) {
  .page-about .page-about-growth__node:nth-child(5) { margin-left: 14%; }
  .page-about .page-about-hero__title { max-width: 19ch; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .page-about-serve__card,
  .page-about .page-about-process__step,
  .page-about .page-about-team__card {
    transition: none;
  }
}