.page-about {
  --about-line: rgba(141, 161, 178, 0.26);
  --about-line-strong: rgba(141, 161, 178, 0.45);
  --about-card: #0c1e30;
  --about-card-2: #102639;
  background: var(--night);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

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

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2rem) 0 clamp(2.5rem, 6vw, 4.25rem);
  background:
    radial-gradient(120% 90% at 84% 0%, rgba(255, 77, 26, 0.24), transparent 62%),
    radial-gradient(90% 70% at 2% 100%, rgba(0, 229, 176, 0.10), transparent 62%),
    linear-gradient(180deg, #0e2337 0%, #0a1a2a 100%);
  border-bottom: var(--frame) solid rgba(255, 77, 26, 0.42);
}

.page-about .about-hero__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: stretch;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-about .about-hero__badge {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: clamp(1rem, 3vw, 1.6rem);
  min-height: 160px;
  border: var(--frame) solid var(--fox);
  background:
    linear-gradient(155deg, rgba(255, 77, 26, 0.22), rgba(10, 26, 42, 0.92) 68%),
    var(--night);
  box-shadow: var(--shadow-hard);
}

.page-about .about-hero__badge-num {
  font-family: var(--font-mono);
  font-size: clamp(2.9rem, 14vw, 5.6rem);
  font-weight: 700;
  line-height: 0.86;
  letter-spacing: -0.045em;
  color: var(--fox);
  word-break: break-all;
}

.page-about .about-hero__badge-label {
  font-size: 0.78rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--cool);
}

.page-about .about-hero__title {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.06;
  font-size: clamp(2rem, 7.4vw, 3.6rem);
  color: var(--white);
}

.page-about .about-hero__lede {
  margin-top: 1rem;
  color: var(--ink-dim);
  font-size: clamp(0.98rem, 2.3vw, 1.1rem);
  line-height: 1.75;
  max-width: 58ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.1rem, 3vw, 1.6rem);
}

.page-about .about-figures {
  list-style: none;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-figures__item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: clamp(0.85rem, 2.4vw, 1.25rem);
  background: var(--about-card);
}

.page-about .about-figures__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 5.4vw, 2.25rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--fox);
}

.page-about .about-figures__label {
  font-size: 0.76rem;
  line-height: 1.55;
  letter-spacing: 0.03em;
  color: var(--cool);
}

/* ---------- 品牌起点 ---------- */

.page-about .about-origin {
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.page-about .about-origin__media .img-frame__media {
  aspect-ratio: 12 / 7;
  overflow: hidden;
  background: var(--slate);
}

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

.page-about .about-origin__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  font-size: clamp(1.6rem, 5.4vw, 2.6rem);
  color: var(--white);
}

.page-about .about-origin__text p {
  margin-top: 1rem;
  color: var(--ink-dim);
  line-height: 1.8;
  font-size: 0.97rem;
}

.page-about .about-origin__text p:first-of-type {
  margin-top: 1.25rem;
}

/* ---------- 编辑部工作方式 ---------- */

.page-about .about-method {
  position: relative;
  background:
    linear-gradient(180deg, transparent 0%, rgba(20, 43, 63, 0.55) 22%, rgba(20, 43, 63, 0.55) 82%, transparent 100%);
}

.page-about .about-method__head {
  max-width: 66ch;
}

.page-about .about-method__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.12;
  font-size: clamp(1.6rem, 5.2vw, 2.5rem);
  color: var(--white);
}

.page-about .about-method__lede {
  margin-top: 0.9rem;
  color: var(--ink-dim);
  line-height: 1.8;
  font-size: 0.97rem;
}

.page-about .about-method__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  margin-top: clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-method__subhead {
  margin: 0 0 clamp(1rem, 2.5vw, 1.5rem);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint);
}

/* 时间轴 */

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

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(1.35rem, 3.4vw, 2rem) clamp(1.05rem, 3vw, 1.6rem);
  margin-left: 0.3rem;
  border-left: 2px solid var(--about-line);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 0.5rem;
  width: 10px;
  height: 10px;
  background: var(--night);
  border: 3px solid var(--fox);
  box-sizing: content-box;
}

.page-about .about-timeline__item:hover::before {
  background: var(--fox);
}

.page-about .about-timeline__mark {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 5.6vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--fox);
}

.page-about .about-timeline__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1rem, 2.8vw, 1.15rem);
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-timeline__text {
  margin: 0.45rem 0 0;
  color: var(--cool);
  font-size: 0.9rem;
  line-height: 1.75;
}

/* 四步流程 */

.page-about .about-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-flow__step {
  position: relative;
  padding: clamp(1rem, 2.8vw, 1.5rem);
  background: var(--about-card);
  border-left: var(--frame) solid transparent;
  transition: background 0.28s ease, border-color 0.28s ease;
}

.page-about .about-flow__step:hover,
.page-about .about-flow__step:focus-within {
  background: var(--about-card-2);
  border-left-color: var(--fox);
}

.page-about .about-flow__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--mint);
}

.page-about .about-flow__title {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.08rem;
  color: var(--white);
}

.page-about .about-flow__text {
  margin: 0.45rem 0 0;
  color: var(--ink-dim);
  font-size: 0.9rem;
  line-height: 1.78;
}

.page-about .about-method__media {
  margin: clamp(1.5rem, 4vw, 2rem) 0 0;
}

.page-about .about-method__media .img-frame__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--slate);
}

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

/* ---------- 内容覆盖（浅色区） ---------- */

.page-about .about-coverage {
  background:
    radial-gradient(110% 70% at 100% 0%, rgba(255, 77, 26, 0.10), transparent 58%),
    var(--mist);
  color: var(--on-light);
  border-top: var(--frame) solid var(--fox);
  border-bottom: var(--frame) solid var(--on-light);
}

.page-about .about-coverage__eyebrow {
  color: var(--fox-deep);
}

.page-about .about-coverage__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.12;
  font-size: clamp(1.6rem, 5.2vw, 2.5rem);
  color: var(--on-light);
}

.page-about .about-coverage__lede {
  margin-top: 0.9rem;
  color: var(--on-light-dim);
  line-height: 1.8;
  font-size: 0.97rem;
  max-width: 62ch;
}

.page-about .about-coverage__head {
  max-width: 70ch;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  background: rgba(16, 32, 46, 0.16);
  border: 2px solid var(--on-light);
  box-shadow: var(--shadow-hard-light);
}

.page-about .about-stats__item {
  padding: clamp(1.05rem, 3vw, 1.6rem);
  background: var(--white);
}

.page-about .about-stats__tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--white);
  background: var(--fox);
}

.page-about .about-stats__tag--mint {
  color: var(--night);
  background: var(--mint-deep);
}

.page-about .about-stats__title {
  margin: 0.75rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1rem, 2.8vw, 1.14rem);
  color: var(--on-light);
}

.page-about .about-stats__text {
  margin: 0.45rem 0 0;
  color: var(--on-light-dim);
  font-size: 0.9rem;
  line-height: 1.78;
}

.page-about .about-coverage__foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
  align-items: center;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px dashed rgba(16, 32, 46, 0.28);
}

.page-about .about-coverage__foot-text {
  margin: 0;
  color: var(--on-light-dim);
  font-size: 0.93rem;
  line-height: 1.8;
}

.page-about .about-coverage__foot-btn {
  justify-self: start;
}

/* ---------- 核验 ---------- */

.page-about .about-verify {
  background: linear-gradient(180deg, #0a1a2a 0%, #0d2135 100%);
}

.page-about .about-verify__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.page-about .about-verify__media .img-frame__media {
  aspect-ratio: 8 / 5;
  overflow: hidden;
  background: var(--slate);
}

.page-about .about-verify__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.55) contrast(1.05);
}

.page-about .about-verify__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.12;
  font-size: clamp(1.6rem, 5.2vw, 2.5rem);
  color: var(--white);
}

.page-about .about-verify__text p {
  margin-top: 1rem;
  color: var(--ink-dim);
  font-size: 0.96rem;
  line-height: 1.8;
}

.page-about .about-verify__notes {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  padding: clamp(1rem, 2.5vw, 1.4rem) 0 0;
  border-top: 1px solid var(--about-line-strong);
  display: grid;
  gap: 0.6rem;
}

.page-about .about-verify__notes .note {
  display: block;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cool);
}

/* ---------- 服务地区与备案 ---------- */

.page-about .about-region {
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.page-about .about-region__panel {
  position: relative;
  padding: clamp(1.35rem, 4vw, 2.5rem);
}

.page-about .about-region__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.14;
  font-size: clamp(1.5rem, 4.8vw, 2.15rem);
  color: var(--white);
}

.page-about .about-region__text {
  margin: 1rem 0 0;
  color: var(--ink-dim);
  font-size: 0.96rem;
  line-height: 1.8;
  max-width: 66ch;
}

.page-about .about-region__meta {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-region__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  align-items: baseline;
  padding: 0.85rem 1rem;
  background: rgba(10, 26, 42, 0.72);
}

.page-about .about-region__meta-key {
  flex: 0 0 auto;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cool);
}

.page-about .about-region__meta-val {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--white);
  word-break: break-word;
}

.page-about .about-region__btn {
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

/* 延伸阅读 */

.page-about .about-next {
  margin-top: clamp(2rem, 5vw, 3rem);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid var(--about-line);
}

.page-about .about-next__label {
  margin: 0 0 0.85rem;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cool);
}

.page-about .about-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-about .about-next__item {
  min-width: 0;
}

.page-about .about-next__link {
  display: inline-block;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--about-line-strong);
  color: var(--ink);
  font-size: 0.87rem;
  text-decoration: none;
  transition: border-color 0.22s ease, color 0.22s ease, background 0.22s ease;
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-color: var(--fox);
  background: rgba(255, 77, 26, 0.12);
  color: var(--white);
}

/* ---------- 显现过渡 ---------- */

.page-about [data-reveal] {
  transition: opacity 0.62s ease, transform 0.62s ease;
}

/* ---------- 响应式 ---------- */

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

@media (min-width: 780px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-coverage__foot {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-about .about-coverage__foot-btn {
    justify-self: end;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__split {
    grid-template-columns: minmax(230px, 0.82fr) minmax(0, 2fr);
    gap: clamp(2rem, 5vw, 4.25rem);
  }
}

@media (min-width: 960px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }

  .page-about .about-verify__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  }
}

@media (min-width: 1024px) {
  .page-about .about-method__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal],
  .page-about .about-flow__step,
  .page-about .about-next__link {
    transition: none !important;
    transform: none !important;
  }
}