/* ================= 品牌档案页 ================= */
.page-about {
  background: var(--paper-050);
  color: var(--text-900);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 56px 0 48px;
  background: var(--ink-900);
  color: var(--text-100);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -42%;
  width: 112%;
  height: 165%;
  background: linear-gradient(200deg, var(--navy-800) 0%, rgba(14, 39, 64, 0) 72%);
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange-500) 0%, var(--electric-400) 48%, rgba(44, 198, 224, 0) 90%);
}
.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
  font-size: 13px;
}
.page-about .breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: rgba(233, 242, 246, 0.5);
}
.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: rgba(233, 242, 246, 0.32);
}
.page-about .breadcrumb-link {
  color: rgba(233, 242, 246, 0.78);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.page-about .breadcrumb-link:hover {
  color: var(--orange-300);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--electric-400);
}
.page-about .about-hero__title {
  margin: 0 0 20px;
  max-width: 15em;
  font-size: clamp(30px, 8vw, 62px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: #ffffff;
}
.page-about .about-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(233, 242, 246, 0.8);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 48px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--navy-600);
  list-style: none;
}
.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.page-about .about-fact__value {
  font-family: var(--font-mono);
  font-size: clamp(18px, 4.6vw, 26px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--orange-500);
}
.page-about .about-fact__key {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(233, 242, 246, 0.6);
}

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  --about-title: var(--text-900);
  --about-lead: var(--text-muted);
  --about-eyebrow: var(--orange-500);
  padding: 56px 0;
}
.page-about .about-section--navy,
.page-about .about-section--dark {
  --about-title: var(--text-100);
  --about-lead: rgba(233, 242, 246, 0.74);
  --about-eyebrow: var(--orange-300);
}
.page-about .about-section--paper {
  background: var(--paper-050);
}
.page-about .about-section--alt {
  background: var(--paper-100);
}
.page-about .about-section--navy {
  background: var(--navy-800);
}
.page-about .about-section--dark {
  background: var(--ink-900);
}

.page-about .about-head {
  max-width: 46em;
  margin-bottom: 40px;
}
.page-about .about-head__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--about-eyebrow);
}
.page-about .about-head__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 5vw, 38px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--about-title);
}
.page-about .about-head__lead {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--about-lead);
}

/* ---------- 发展时间线 ---------- */
.page-about .about-history__grid {
  display: grid;
  gap: 40px;
}
.page-about .about-history__figure {
  margin: 0;
}
.page-about .about-history__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
}
.page-about .about-history__note {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--text-muted);
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-timeline__row {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 24px 0 24px 24px;
  border-left: 2px solid var(--paper-100);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.page-about .about-timeline__row::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 32px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper-050);
  border: 2px solid var(--navy-600);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.page-about .about-timeline__row:first-child {
  padding-top: 0;
}
.page-about .about-timeline__row:first-child::before {
  top: 8px;
}
.page-about .about-timeline__row:last-child {
  padding-bottom: 0;
}
.page-about .about-timeline__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--orange-500);
}
.page-about .about-timeline__body {
  min-width: 0;
}
.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.36;
  color: var(--text-900);
}
.page-about .about-timeline__text {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-muted);
}
.page-about .about-inline-link {
  color: var(--orange-500);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.page-about .about-inline-link:hover {
  color: var(--navy-800);
}

@media (hover: hover) {
  .page-about .about-timeline__row:hover {
    border-left-color: var(--orange-500);
    transform: translateX(3px);
  }
  .page-about .about-timeline__row:hover::before {
    background: var(--orange-500);
    border-color: var(--orange-500);
    box-shadow: 0 0 0 4px rgba(255, 106, 26, 0.16);
  }
}

/* ---------- 团队构成 ---------- */
.page-about .about-team__figure {
  margin: 0 0 32px;
}
.page-about .about-team__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
}
.page-about .about-team__caption {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(233, 242, 246, 0.6);
}

.page-about .about-roles__bar {
  display: flex;
  height: 12px;
  border-radius: var(--r-pill);
  overflow: hidden;
  background: var(--navy-600);
}
.page-about .about-roles__seg {
  display: block;
  height: 100%;
}
.page-about .about-roles__seg--data {
  flex: 14;
  background: var(--electric-400);
}
.page-about .about-roles__seg--video {
  flex: 9;
  background: var(--mint-400);
}
.page-about .about-roles__seg--column {
  flex: 13;
  background: var(--violet-500);
}

.page-about .about-roles__list {
  display: grid;
  gap: 16px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-role {
  padding: 24px;
  border-radius: var(--r-md);
  border: 1px solid var(--navy-600);
  background: rgba(27, 58, 90, 0.42);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.page-about .about-role__num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
}
.page-about .about-role:nth-child(1) .about-role__num {
  color: var(--electric-400);
}
.page-about .about-role:nth-child(2) .about-role__num {
  color: var(--mint-400);
}
.page-about .about-role:nth-child(3) .about-role__num {
  color: var(--violet-500);
}
.page-about .about-role__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-100);
}
.page-about .about-role__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(233, 242, 246, 0.72);
}
@media (hover: hover) {
  .page-about .about-role:hover {
    transform: translateY(-3px);
    border-color: var(--orange-500);
  }
}

/* ---------- 生产流程 ---------- */
.page-about .about-process__figure {
  margin: 0 0 32px;
}
.page-about .about-process__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
}

.page-about .about-flow {
  position: relative;
}
.page-about .about-flow__trace {
  display: none;
}
.page-about .about-flow__list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-flow__step {
  position: relative;
  padding: 24px;
  border-radius: var(--r-md);
  border: 1px solid rgba(27, 58, 90, 0.22);
  background: transparent;
  outline: none;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.page-about .about-flow__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--navy-800);
  color: var(--orange-300);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}
.page-about .about-flow__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.38;
  color: var(--text-900);
}
.page-about .about-flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-muted);
}
.page-about .about-flow__step:hover,
.page-about .about-flow__step:focus-visible {
  border-color: var(--orange-500);
  background: rgba(245, 248, 249, 0.75);
}
.page-about .about-flow__step:focus-visible {
  box-shadow: 0 0 0 3px rgba(44, 198, 224, 0.35);
}

/* ---------- 复核提示条 ---------- */
.page-about .about-proof {
  display: grid;
  gap: 20px;
  margin-top: 40px;
  padding: 32px 24px;
  border-radius: var(--r-lg);
  background: var(--navy-800);
  border-left: 4px solid var(--mint-400);
}
.page-about .about-proof__eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mint-400);
}
.page-about .about-proof__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: #ffffff;
}
.page-about .about-proof__text {
  margin: 0;
  max-width: 52em;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(233, 242, 246, 0.75);
  word-break: break-word;
}

.page-about .about-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: start;
  padding: 12px 22px;
  border-radius: var(--r-pill);
  background: var(--orange-500);
  color: #06121f;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}
.page-about .about-cta:hover {
  background: var(--orange-300);
  transform: translateY(-2px);
}
.page-about .about-cta:focus-visible {
  outline: 2px solid var(--electric-400);
  outline-offset: 3px;
}
.page-about .about-cta--quiet {
  background: transparent;
  color: var(--orange-500);
  border: 1px solid var(--orange-500);
}
.page-about .about-cta--quiet:hover {
  background: var(--orange-500);
  color: #06121f;
}

/* ---------- 内容储备 ---------- */
.page-about .about-scale {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-scale__item {
  padding-top: 16px;
  border-top: 2px solid var(--navy-600);
  min-width: 0;
}
.page-about .about-scale__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.8vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--electric-400);
}
.page-about .about-scale__item:first-child .about-scale__num {
  color: var(--orange-500);
}
.page-about .about-scale__key {
  display: block;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(233, 242, 246, 0.7);
}
.page-about .about-scale__note {
  margin: 40px 0 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(233, 242, 246, 0.72);
}
.page-about .about-scale__note a {
  color: var(--orange-300);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about .about-scale__note a:hover {
  color: #ffffff;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: 16px;
}
.page-about .about-partner {
  padding: 24px;
  border-radius: var(--r-md);
  background: #ffffff;
  border: 1px solid var(--paper-100);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.page-about .about-partner__tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 11px;
  border-radius: var(--r-pill);
  background: var(--paper-100);
  color: var(--navy-800);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
}
.page-about .about-partner__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-900);
}
.page-about .about-partner__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--text-muted);
}
@media (hover: hover) {
  .page-about .about-partner:hover {
    transform: translateY(-3px);
    border-color: var(--orange-500);
    box-shadow: var(--shadow-card);
  }
}
.page-about .about-partners__more {
  margin: 32px 0 0;
}

/* ---------- 联系与备案 ---------- */
.page-about .about-contact__grid {
  display: grid;
  gap: 32px;
}
.page-about .about-head__eyebrow--solo {
  margin-bottom: 12px;
}
.page-about .about-contact__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--navy-600);
}
.page-about .about-contact__row {
  display: grid;
  gap: 4px;
  padding: 20px;
  background: var(--ink-900);
}
.page-about .about-contact__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--orange-300);
}
.page-about .about-contact__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.68;
  color: var(--text-100);
  word-break: break-word;
}
.page-about .about-contact__note {
  margin: 32px 0 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(233, 242, 246, 0.62);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-about .about-contact__row {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 88px 0 64px;
  }
  .page-about .about-hero__lead {
    font-size: 17px;
  }
  .page-about .about-section {
    padding: 88px 0;
  }
  .page-about .about-head {
    margin-bottom: 48px;
  }
  .page-about .about-timeline__row {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }
  .page-about .about-timeline__year {
    font-size: 20px;
    text-align: right;
  }
  .page-about .about-timeline__row::before {
    top: 34px;
  }
  .page-about .about-roles__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
  .page-about .about-scale {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 40px 24px;
  }
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
  .page-about .about-proof {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    padding: 40px 32px;
  }
}

@media (min-width: 900px) {
  .page-about .about-history__grid {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }
  .page-about .about-contact__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 64px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-flow {
    padding-top: 4px;
  }
  .page-about .about-flow__trace {
    display: block;
    position: absolute;
    top: 16px;
    left: 0;
    width: 100%;
    height: 40px;
    color: var(--navy-600);
    opacity: 0.55;
    pointer-events: none;
  }
  .page-about .about-flow__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 20px;
  }
  .page-about .about-flow__step {
    padding: 76px 20px 24px;
  }
  .page-about .about-flow__num {
    position: absolute;
    top: 16px;
    left: 20px;
    margin-bottom: 0;
    background: var(--navy-800);
  }
  .page-about .about-scale {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__title {
    max-width: 14em;
  }
}