.page-about {
  --about-rule: rgba(206, 226, 216, 0.14);
  --about-rule-2: rgba(206, 226, 216, 0.28);
  --about-pad: clamp(1.25rem, 4vw, 3rem);
  --about-gap: clamp(1.5rem, 3.5vw, 3rem);
  color: var(--mnx-white);
}

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

/* ---------- 面包屑 ---------- */

.page-about .about-crumb {
  padding-block: clamp(1rem, 2.5vw, 1.5rem) 0;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding-block: clamp(1.75rem, 4vw, 3rem) clamp(2.5rem, 6vw, 5rem);
  overflow: hidden;
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -28%;
  right: -14%;
  width: min(620px, 72vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 34% 34%, rgba(217, 164, 65, 0.24), rgba(217, 164, 65, 0) 66%);
  transform: rotate(-16deg);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto auto -38% -18%;
  width: min(420px, 52vw);
  aspect-ratio: 1 / 1;
  background: linear-gradient(145deg, rgba(217, 164, 65, 0.09), rgba(217, 164, 65, 0));
  clip-path: polygon(0 0, 100% 42%, 62% 100%, 0 76%);
  transform: rotate(8deg);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3.25rem);
  align-items: start;
}

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

.page-about .about-hero__title {
  margin: 0.85rem 0 1.25rem;
  max-width: 20ch;
  text-wrap: balance;
  line-height: 1.14;
}

.page-about .about-hero__lede {
  max-width: 44ch;
  margin: 0 0 1.1rem;
  color: var(--mnx-white);
}

.page-about .about-hero__text {
  max-width: 54ch;
  margin: 0;
  color: var(--mnx-mute);
  line-height: 1.9;
  font-size: 0.97rem;
}

.page-about .about-hero__meta {
  margin: 2rem 0 0;
  padding-top: 1.35rem;
  border-top: 1px solid var(--about-rule);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.95rem;
}

.page-about .about-hero__metaRow {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-about .about-hero__metaRow dt {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mnx-mute-2);
}

.page-about .about-hero__metaRow dd {
  margin: 0;
  font-size: 1.05rem;
  color: var(--mnx-amber-2);
  letter-spacing: 0.02em;
}

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

.page-about .about-hero__figure .mnx-media {
  border: 1px solid var(--about-rule);
}

/* ---------- 三支柱 ---------- */

.page-about .about-pillars__head {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-pillars__title {
  max-width: 26ch;
  margin-top: 0.6rem;
}

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

.page-about .about-pillar {
  background: var(--mnx-ink-900, #050e0b);
  padding: clamp(1.4rem, 3vw, 2.1rem);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 0;
  transition: background-color 180ms ease, box-shadow 180ms ease;
}

.page-about .about-pillar:hover {
  background: var(--mnx-ink-800, #08150f);
  box-shadow: inset 0 2px 0 0 var(--mnx-amber);
}

.page-about .about-pillar:focus-within {
  box-shadow: inset 0 2px 0 0 var(--mnx-focus);
}

.page-about .about-pillar__num {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--mnx-amber);
}

.page-about .about-pillar__title {
  margin: 0;
  font-family: var(--mnx-font-display);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 800;
  letter-spacing: -0.012em;
  line-height: 1.3;
}

.page-about .about-pillar__text {
  margin: 0;
  color: var(--mnx-mute);
  font-size: 0.94rem;
  line-height: 1.85;
}

/* ---------- 服务区域 ---------- */

.page-about .about-region__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.75rem);
  align-items: center;
}

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

.page-about .about-region__title {
  margin: 0.6rem 0 1.1rem;
  max-width: 24ch;
}

.page-about .about-region__copy p {
  margin: 0 0 1rem;
  color: var(--mnx-mute);
  line-height: 1.9;
  font-size: 0.97rem;
  max-width: 52ch;
}

.page-about .about-region__copy p:last-child {
  margin-bottom: 0;
}

.page-about .about-region__figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-region__figure .mnx-media {
  border: 1px solid var(--about-rule);
}

/* ---------- 24 小时周期 ---------- */

.page-about .about-cycle__head {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-cycle__title {
  max-width: 28ch;
  margin-top: 0.6rem;
}

.page-about .about-cycle__lede {
  max-width: 56ch;
  margin-top: 1rem;
}

.page-about .about-cycle__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-about .about-cycle__node {
  position: relative;
  padding: 1.4rem 0 1.4rem 0;
  border-top: 2px solid var(--about-rule);
  min-width: 0;
}

.page-about .about-cycle__node--accent {
  border-top-color: var(--mnx-amber);
}

.page-about .about-cycle__time {
  margin: 0 0 0.4rem;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--mnx-amber-2);
}

.page-about .about-cycle__label {
  margin: 0 0 0.5rem;
  font-family: var(--mnx-font-display);
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.008em;
}

.page-about .about-cycle__desc {
  margin: 0;
  color: var(--mnx-mute);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 40ch;
}

/* ---------- 承诺面板 ---------- */

.page-about .about-promise__panel {
  position: relative;
  padding: clamp(1.6rem, 4vw, 2.85rem);
  background: linear-gradient(158deg, var(--mnx-ink-800, #08150f), var(--mnx-ink-950, #030908));
  border: 1px solid var(--about-rule);
  overflow: hidden;
}

.page-about .about-promise__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: clamp(1.6rem, 4vw, 2.85rem);
  width: 76px;
  height: 2px;
  background: var(--mnx-amber);
}

.page-about .about-promise__title {
  margin: 0.6rem 0 0.9rem;
  max-width: 26ch;
}

.page-about .about-promise__lede {
  margin: 0;
  max-width: 56ch;
  color: var(--mnx-mute);
  line-height: 1.9;
  font-size: 0.96rem;
}

.page-about .about-promise__list {
  margin-top: clamp(1.5rem, 4vw, 2.4rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-promise__row {
  background: var(--mnx-ink-950, #030908);
  padding: clamp(1.2rem, 2.6vw, 1.6rem);
  min-width: 0;
  transition: background-color 180ms ease;
}

.page-about .about-promise__row:hover {
  background: var(--mnx-ink-900, #050e0b);
}

.page-about .about-promise__row h3 {
  margin: 0 0 0.5rem;
  font-family: var(--mnx-font-display);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.008em;
  color: var(--mnx-white);
}

.page-about .about-promise__row p {
  margin: 0;
  color: var(--mnx-mute);
  font-size: 0.92rem;
  line-height: 1.82;
}

/* ---------- 结尾引导 ---------- */

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.75rem);
  align-items: center;
}

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

.page-about .about-next__title {
  margin: 0.6rem 0 1rem;
  max-width: 20ch;
}

.page-about .about-next__copy p {
  margin: 0;
  max-width: 50ch;
  color: var(--mnx-mute);
  line-height: 1.9;
  font-size: 0.97rem;
}

.page-about .about-next__actions {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.page-about .about-next__figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-next__figure .mnx-media {
  border: 1px solid var(--about-rule);
}

/* ---------- 窄屏兜底 ---------- */

@media (max-width: 460px) {
  .page-about .about-hero__title {
    max-width: none;
  }

  .page-about .about-pillars__title,
  .page-about .about-region__title,
  .page-about .about-cycle__title,
  .page-about .about-promise__title,
  .page-about .about-next__title {
    max-width: none;
  }
}

/* ---------- 中等屏幕 ---------- */

@media (min-width: 620px) {
  .page-about .about-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }

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

@media (min-width: 780px) {
  .page-about .about-pillars__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(2.5rem, 5vw, 4rem);
    align-items: start;
  }

  .page-about .about-hero__figure {
    margin-top: 1.25rem;
  }

  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(2.5rem, 5vw, 3.75rem);
  }

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

  .page-about .about-cycle__node {
    padding: 1.6rem 1.4rem 0 0;
    border-top-width: 1px;
    border-right: 1px solid var(--about-rule);
  }

  .page-about .about-cycle__node:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .page-about .about-cycle__node::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--about-rule-2);
  }

  .page-about .about-cycle__node--accent {
    border-top-color: var(--about-rule);
  }

  .page-about .about-cycle__node--accent::before {
    width: 54px;
    background: var(--mnx-amber);
  }

  .page-about .about-next__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: clamp(2.5rem, 5vw, 3.75rem);
  }
}

/* ---------- 减少动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .about-pillar,
  .page-about .about-promise__row {
    transition: none;
  }
}