.page-about {
  background: var(--ink);
  color: var(--silver);
}

.page-about .about-crumb {
  padding-top: clamp(18px, 3vw, 30px);
  padding-bottom: clamp(10px, 1.6vw, 18px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 3.4vw, 36px) 0 clamp(56px, 8vw, 100px);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -30%;
  width: min(620px, 90vw);
  height: min(620px, 90vw);
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(216, 185, 138, 0.16), rgba(216, 185, 138, 0) 62%);
  pointer-events: none;
}

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

.page-about .about-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6.6vw, 72px);
  line-height: 1.03;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 16px 0 20px;
}

.page-about .about-hero__lede {
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--silver-70);
  margin: 0 0 14px;
}

.page-about .about-hero__sub {
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver-55);
  margin: 0;
}

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

.page-about .about-hero__panel {
  margin-top: 32px;
  background: var(--steel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 20px 22px;
}

.page-about .about-hero__status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver-70);
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
  margin: 18px 0 0;
}

.page-about .fact__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver-55);
  margin-bottom: 6px;
}

.page-about .fact__val {
  display: block;
  margin: 0;
  font-size: 14px;
  color: var(--paper);
}

.page-about .fact__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1;
  color: var(--red);
  margin-right: 5px;
}

/* ---------- 品牌定位 ---------- */
.page-about .about-position {
  background: var(--paper);
  color: var(--ink-text);
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-position .index-tag,
.page-about .about-team .index-tag,
.page-about .about-trust .index-tag {
  color: var(--red-deep);
}

.page-about .about-position__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-position__text h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 44px);
  line-height: 1.16;
  color: var(--ink);
  margin: 16px 0 18px;
}

.page-about .about-position__text p {
  font-size: 16px;
  line-height: 1.85;
  color: #33404F;
  margin: 0 0 16px;
}

.page-about .about-position__text .link-underline {
  display: inline-block;
  margin-top: 6px;
  color: var(--red-deep);
}

.page-about .about-position__visual {
  margin: 0;
  align-self: start;
}

.page-about .about-position__visual .media-frame,
.page-about .about-team__visual .media-frame {
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(11, 18, 32, 0.12);
  background: var(--sand-light);
}

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

.page-about .about-position__visual .media-frame__caption,
.page-about .about-team__visual .media-frame__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: #5B6472;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  background: var(--ink);
  padding: clamp(56px, 8vw, 108px) 0;
  overflow: hidden;
}

.page-about .about-timeline__bg {
  position: absolute;
  top: 8%;
  right: -8%;
  width: min(460px, 68vw);
  height: min(460px, 68vw);
  opacity: 0.16;
  pointer-events: none;
}

.page-about .about-timeline__bg img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.page-about .about-timeline__inner {
  position: relative;
  z-index: 1;
}

.page-about .timeline {
  list-style: none;
  margin: 40px 0 0;
  padding: 0 0 0 20px;
  border-left: 1px solid var(--line-strong);
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 34px 24px;
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--red);
}

.page-about .timeline__item--current::before {
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(226, 58, 46, 0.2);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.14em;
  color: var(--sand);
  margin-bottom: 8px;
}

.page-about .timeline__card h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.45;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-about .timeline__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver-70);
  max-width: 54ch;
}

.page-about .timeline__tag {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--silver);
}

.page-about .timeline__tag--red {
  color: var(--paper);
  border-color: var(--red);
  background: var(--red-deep);
}

.page-about .timeline__card {
  transition: border-color 0.25s var(--ease);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--paper);
  color: var(--ink-text);
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-team__grid {
  display: grid;
  gap: 32px;
}

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

.page-about .about-team__text h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 44px);
  line-height: 1.16;
  color: var(--ink);
  margin: 16px 0 18px;
}

.page-about .about-team__text p {
  font-size: 16px;
  line-height: 1.85;
  color: #33404F;
  margin: 0 0 16px;
}

.page-about .bar-list {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .bar-item {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.page-about .bar-item__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.page-about .bar-item__track {
  display: block;
  height: 8px;
  border-radius: 999px;
  background: rgba(11, 18, 32, 0.08);
  overflow: hidden;
}

.page-about .bar-item__fill {
  display: block;
  height: 100%;
  width: var(--pct, 0%);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--sand), var(--red));
}

.page-about .bar-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #5B6472;
  white-space: nowrap;
}

/* ---------- 服务覆盖 ---------- */
.page-about .about-scale {
  background: var(--ink-2);
  padding: clamp(56px, 8vw, 108px) 0;
}

.page-about .about-scale__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 36px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .scale-cell {
  background: var(--ink-2);
  padding: 24px 20px;
}

.page-about .scale-cell__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(34px, 6vw, 54px);
  line-height: 1;
  color: var(--paper);
}

.page-about .scale-cell__num--red {
  color: var(--red);
}

.page-about .scale-cell__unit {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--silver-55);
}

.page-about .scale-cell p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver-70);
}

/* ---------- 资质与生态 ---------- */
.page-about .about-trust {
  background: var(--sand);
  color: var(--ink);
  padding: clamp(56px, 8vw, 108px) 0;
}

.page-about .about-trust .section-head__title {
  color: var(--ink);
}

.page-about .about-trust .section-head__note {
  color: #4A4438;
}

.page-about .about-trust__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 36px;
}

.page-about .trust-badge {
  background: rgba(247, 243, 234, 0.58);
  border: 1px solid rgba(11, 18, 32, 0.12);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .trust-badge:hover {
  border-color: var(--red);
  background: rgba(247, 243, 234, 0.9);
}

.page-about .trust-badge__kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--red-deep);
}

.page-about .trust-badge h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  color: var(--ink);
  margin: 10px 0 8px;
}

.page-about .trust-badge p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #3D4757;
}

.page-about .eco-heading {
  margin: 44px 0 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}

.page-about .eco-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 18px 0 0;
  padding: 0;
  background: rgba(11, 18, 32, 0.16);
  border: 1px solid rgba(11, 18, 32, 0.16);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .eco-list li {
  background: var(--sand);
  padding: 18px 20px;
}

.page-about .eco-list__title {
  display: block;
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 5px;
}

.page-about .eco-list__desc {
  display: block;
  font-size: 13px;
  line-height: 1.7;
  color: #4A4438;
}

/* ---------- 联系 ---------- */
.page-about .about-contact {
  position: relative;
  background: var(--ink);
  padding: clamp(56px, 8vw, 108px) 0 clamp(64px, 9vw, 120px);
  overflow: hidden;
}

.page-about .about-contact::before {
  content: "";
  position: absolute;
  left: -10%;
  top: -20%;
  width: min(520px, 80vw);
  height: min(520px, 80vw);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(35, 196, 184, 0.14), rgba(35, 196, 184, 0) 64%);
  pointer-events: none;
}

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

.page-about .about-contact__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-contact__lead h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 3.8vw, 50px);
  line-height: 1.14;
  color: var(--paper);
  margin: 16px 0 18px;
}

.page-about .about-contact__lead p {
  font-size: 16px;
  line-height: 1.82;
  color: var(--silver-70);
  margin: 0 0 24px;
  max-width: 56ch;
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-contact__card {
  background: var(--steel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 6px 22px;
}

.page-about .contact-row {
  padding: 16px 0;
  border-bottom: 1px dashed var(--line);
}

.page-about .contact-row:last-child {
  border-bottom: none;
}

.page-about .contact-row__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver-55);
  margin-bottom: 7px;
}

.page-about .contact-row__v {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-scale__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-about .about-hero .container {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(32px, 5vw, 68px);
  }

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

  .page-about .about-hero__facts {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .page-about .about-position__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: clamp(32px, 5vw, 60px);
    align-items: center;
  }

  .page-about .about-trust__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-contact__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  /* 时间线改为左侧年份刻度 */
  .page-about .timeline {
    margin-top: 44px;
    padding-left: 0;
    border-left: 0;
  }

  .page-about .timeline__item {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    column-gap: 28px;
    padding: 0 0 40px 0;
  }

  .page-about .timeline__item::before {
    content: "";
    position: absolute;
    left: 124px;
    top: 10px;
    bottom: 0;
    width: 1px;
    height: auto;
    border-radius: 0;
    border: 0;
    background: var(--line-strong);
    box-shadow: none;
  }

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

  .page-about .timeline__year {
    margin: 0;
    padding-top: 3px;
    text-align: right;
    font-size: 17px;
  }

  .page-about .timeline__card {
    position: relative;
    padding-left: 22px;
  }

  .page-about .timeline__card::before {
    content: "";
    position: absolute;
    left: -7px;
    top: 7px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--ink);
    border: 2px solid var(--red);
  }

  .page-about .timeline__item--current .timeline__card::before {
    background: var(--red);
    box-shadow: 0 0 0 4px rgba(226, 58, 46, 0.2);
  }
}

@media (min-width: 1024px) {
  .page-about .about-scale__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .timeline__item {
    grid-template-columns: 120px minmax(0, 1fr);
    column-gap: 34px;
  }

  .page-about .timeline__item::before {
    left: 154px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .trust-badge,
  .page-about .timeline__card {
    transition: none;
  }
}

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