.page-about {
  --about-cut: 20px;
  --about-edge: 1px solid var(--line);
  background: var(--ink-900);
  color: var(--text);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about .about-crumb {
  padding-top: 22px;
}

.page-about .display {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 10px 0 56px;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(255, 107, 44, 0.18), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(47, 182, 196, 0.12), transparent 60%),
    linear-gradient(180deg, var(--ink-850), var(--ink-900));
  border-bottom: var(--about-edge);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(42, 54, 80, 0.5) 0 1px,
    transparent 1px 64px
  );
  opacity: 0.5;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-about .about-hero__copy h1 {
  font-size: clamp(30px, 8.4vw, 58px);
  margin: 14px 0 0;
  color: var(--text);
}

.page-about .about-hero__lede {
  margin-top: 20px;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__facts li {
  padding-left: 12px;
  border-left: 1px solid var(--line-soft);
}

.page-about .about-hero__facts li:first-child {
  padding-left: 0;
  border-left: 0;
}

.page-about .about-hero__facts .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 7vw, 38px);
  line-height: 1;
  color: var(--orange);
  letter-spacing: -0.02em;
}

.page-about .about-hero__facts em {
  display: block;
  margin-top: 8px;
  font-style: normal;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

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

.page-about .about-hero__slate {
  position: relative;
  padding: 22px 20px 20px;
  background: linear-gradient(155deg, var(--ink-800), var(--ink-850));
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-hero__slate::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 3px;
  background: var(--orange);
}

.page-about .about-hero__slate-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__round {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .about-hero__round .num {
  color: var(--orange);
  font-size: 19px;
}

.page-about .about-hero__slate-list {
  margin: 4px 0 0;
  padding: 0;
}

.page-about .about-hero__slate-list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .about-hero__slate-list dt {
  font-size: 13px;
  color: var(--dim);
  letter-spacing: 0.02em;
}

.page-about .about-hero__slate-list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text);
  text-align: right;
}

.page-about .about-hero__slate-list dd .num {
  color: var(--amber);
  font-size: 18px;
}

.page-about .about-hero__slate-note {
  margin: 16px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--lime);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--dim);
}

/* ---------- 品牌缘起 ---------- */
.page-about .about-origin__banner {
  margin: 0;
}

.page-about .about-origin__body {
  margin-top: 32px;
  display: grid;
  gap: 20px;
}

.page-about .about-origin__head h2 {
  font-size: clamp(26px, 6.6vw, 44px);
  margin: 12px 0 0;
}

.page-about .about-origin__text p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-origin__text strong {
  color: var(--text);
  font-weight: 600;
}

.page-about .about-origin__pull {
  margin-top: 8px;
  padding: 16px 18px;
  border-left: 3px solid var(--amber);
  background: rgba(242, 179, 61, 0.07);
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.7;
}

/* ---------- 三条内容线 ---------- */
.page-about .about-lines {
  background: var(--ink-850);
  border-block: var(--about-edge);
}

.page-about .about-lines__head {
  max-width: 640px;
}

.page-about .about-lines__head h2 {
  font-size: clamp(26px, 6.6vw, 42px);
  margin: 12px 0 0;
}

.page-about .about-lines__lede {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-lines__grid {
  margin-top: 34px;
  display: grid;
  gap: 18px;
}

.page-about .about-line {
  position: relative;
  padding: 24px 20px 22px;
  background: var(--ink-800);
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
  transition: transform 240ms var(--ease), box-shadow 240ms var(--ease);
}

.page-about .about-line:hover {
  transform: translateY(-4px);
  box-shadow: inset 0 0 0 1px var(--orange);
}

.page-about .about-line__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  color: var(--orange);
  opacity: 0.92;
}

.page-about .about-line--2 .about-line__no {
  color: var(--cyan);
}

.page-about .about-line--3 .about-line__no {
  color: var(--lime);
}

.page-about .about-line h3 {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-line p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-line ul {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-line ul li {
  position: relative;
  padding-left: 15px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-line ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

.page-about .about-line__link {
  display: inline-block;
  margin-top: 18px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 182, 196, 0.4);
  padding-bottom: 2px;
}

.page-about .about-line__link:hover,
.page-about .about-line__link:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 数据条带 ---------- */
.page-about .about-strip {
  padding: 30px 0;
  background:
    linear-gradient(90deg, rgba(255, 107, 44, 0.14), rgba(47, 182, 196, 0.12) 55%, rgba(184, 255, 60, 0.1));
  border-block: 1px solid var(--line);
}

.page-about .about-strip__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
}

.page-about .about-strip__list li {
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.page-about .about-strip__list li:nth-child(2n) {
  border-left-color: rgba(184, 255, 60, 0.5);
}

.page-about .about-strip__list .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 5.4vw, 30px);
  line-height: 1;
  color: var(--text);
  letter-spacing: -0.02em;
}

.page-about .about-strip__list em {
  display: block;
  margin-top: 7px;
  font-style: normal;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 团队 ---------- */
.page-about .about-team__inner {
  display: grid;
  gap: 28px;
}

.page-about .about-team__copy h2 {
  font-size: clamp(26px, 6.6vw, 42px);
  margin: 12px 0 0;
}

.page-about .about-team__lede {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-team__roles {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .about-team__roles li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .about-team__roles .num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--orange);
}

.page-about .about-team__roles strong {
  display: block;
  font-size: 15px;
  color: var(--text);
}

.page-about .about-team__roles p {
  margin: 5px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

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

/* ---------- 发展阶段 ---------- */
.page-about .about-stages {
  background: var(--ink-850);
  border-block: var(--about-edge);
}

.page-about .about-stages__head {
  max-width: 660px;
}

.page-about .about-stages__head h2 {
  font-size: clamp(26px, 6.6vw, 42px);
  margin: 12px 0 0;
}

.page-about .about-stages__lede {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-stages__jump {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-stages__jump a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-stages__jump a:hover,
.page-about .about-stages__jump a:focus-visible {
  color: var(--text);
  border-color: var(--orange);
}

.page-about .about-stages__list {
  list-style: none;
  position: relative;
  margin: 34px 0 0;
  padding: 0;
}

.page-about .about-stages__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange) 0%, var(--orange-deep) 30%, var(--line) 78%);
}

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

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

.page-about .about-stage__dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--ink-850);
  border: 2px solid var(--orange);
  transform: rotate(45deg);
}

.page-about .about-stage__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-about .about-stage h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 5vw, 26px);
  font-weight: 700;
  color: var(--text);
}

.page-about .about-stage p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

.page-about .about-stage__tags {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 覆盖与合作 ---------- */
.page-about .about-reach__inner {
  display: grid;
  gap: 28px;
}

.page-about .about-reach__copy h2 {
  font-size: clamp(26px, 6.6vw, 42px);
  margin: 12px 0 0;
}

.page-about .about-reach__copy p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 60ch;
}

.page-about .about-reach__actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-reach__stats {
  margin: 0;
  padding: 20px;
  background: var(--ink-800);
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-reach__stats > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .about-reach__stats > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-reach__stats dt {
  font-size: 13px;
  color: var(--dim);
}

.page-about .about-reach__stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--text);
  text-align: right;
}

.page-about .about-reach__stats dd .num {
  color: var(--lime);
  font-size: 20px;
}

.page-about .about-reach__media {
  margin: 32px 0 0;
  aspect-ratio: 2 / 1;
}

.page-about .about-reach__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 坚持的做法 ---------- */
.page-about .about-practices {
  background: var(--ink-850);
  border-top: var(--about-edge);
}

.page-about .about-practices__head {
  max-width: 620px;
}

.page-about .about-practices__head h2 {
  font-size: clamp(26px, 6.6vw, 42px);
  margin: 12px 0 0;
}

.page-about .about-practices__grid {
  margin-top: 32px;
  display: grid;
  gap: 16px;
}

.page-about .about-practice {
  padding: 20px 18px 22px;
  background: var(--ink-800);
  border-top: 2px solid var(--orange);
}

.page-about .about-practice--2 {
  border-top-color: var(--cyan);
}

.page-about .about-practice--3 {
  border-top-color: var(--amber);
}

.page-about .about-practice__no {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--dim);
}

.page-about .about-practice h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
}

.page-about .about-practice p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 底部行动 ---------- */
.page-about .about-cta {
  padding: 52px 0 64px;
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(255, 107, 44, 0.16), transparent 62%),
    linear-gradient(180deg, var(--ink-900), var(--ink-850));
  border-top: var(--about-edge);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
}

.page-about .about-cta h2 {
  font-size: clamp(24px, 6vw, 38px);
  margin: 0;
}

.page-about .about-cta p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 52ch;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-origin__body {
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-origin__head h2 {
    margin-top: 14px;
  }

  .page-about .about-strip__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 26px 0 76px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-hero__slate {
    margin-top: 36px;
  }

  .page-about .about-lines__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    align-items: start;
  }

  .page-about .about-line--2 {
    margin-top: 32px;
  }

  .page-about .about-line--3 {
    margin-top: 64px;
  }

  .page-about .about-strip__list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-team__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-stage {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 28px;
    padding-left: 48px;
    padding-bottom: 44px;
  }

  .page-about .about-stage__body {
    grid-column: 2;
  }

  .page-about .about-stages__list::before {
    left: 6px;
  }

  .page-about .about-reach__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-reach__stats {
    margin-top: 12px;
  }

  .page-about .about-reach__media {
    margin-top: 48px;
  }

  .page-about .about-practices__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-practice {
    padding: 24px 22px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-line,
  .page-about .about-stages__jump a {
    transition: none;
  }

  .page-about .about-line:hover {
    transform: none;
  }
}