.page-about {
  --about-rail-w: 92px;
  background: var(--mist);
  color: var(--ink);
}

.page-about .breadcrumb {
  margin-block: clamp(14px, 3vw, 26px) 0;
}

.page-about .about-sec__body,
.page-about .about-hero__body {
  min-width: 0;
}

/* ---------- 章节编号轨 ---------- */
.page-about .about-rail {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--seed);
  background: var(--sun);
  border: var(--line);
  box-shadow: var(--hard-sm);
  padding: 4px 9px;
}

.page-about .about-rail__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--moss);
}

.page-about .about-rail__note {
  display: none;
  color: var(--moss);
  letter-spacing: 0.3em;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 3vw, 34px);
  padding-block: clamp(20px, 4vw, 44px) clamp(36px, 6vw, 72px);
  border-bottom: var(--line);
}

.page-about .about-hero__title {
  margin: 10px 0 clamp(14px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-size: clamp(38px, 8vw, 88px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--seed);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--deep);
}

.page-about .about-hero__lede {
  max-width: 62ch;
  margin: 0 0 12px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-hero__figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: clamp(22px, 4vw, 38px);
}

.page-about .about-fig {
  border: var(--line);
  background: #fff;
  box-shadow: var(--hard-sm);
  padding: 14px 16px 16px;
}

.page-about .about-fig:nth-child(2) {
  background: var(--light);
}

.page-about .about-fig__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--deep);
}

.page-about .about-fig__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 2.6vw, 30px);
  padding-block: clamp(40px, 6.5vw, 84px);
  border-bottom: var(--line-thin);
}

.page-about .about-sec__title {
  margin: 0 0 clamp(14px, 2.4vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 44px);
  font-weight: 900;
  line-height: 1.18;
  color: var(--seed);
}

.page-about .about-sec__lede {
  max-width: 62ch;
  margin: 0 0 clamp(18px, 3vw, 30px);
  font-size: clamp(16px, 1.5vw, 17.5px);
  line-height: 1.9;
  color: var(--ink);
}

/* ---------- 名字来由 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(20px, 3.5vw, 40px);
}

.page-about .about-origin__text p {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-pull {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 6px solid var(--flesh);
  background: var(--light);
  font-family: var(--font-display);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.75;
  color: var(--deep);
}

.page-about .about-origin__media,
.page-about .about-quality__media {
  margin: 0;
}

.page-about .about-origin__media img,
.page-about .about-quality__media img,
.page-about .about-band__figure img {
  max-width: 100%;
}

/* ---------- 暖棕横带与时间线 ---------- */
.page-about .about-band {
  background: var(--brown);
  color: var(--mist);
  border-block: var(--line);
  padding-block: clamp(40px, 6vw, 80px);
}

.page-about .about-band__head {
  max-width: 64ch;
}

.page-about .about-band__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--sun);
}

.page-about .about-band__title {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.12;
  color: #fff;
}

.page-about .about-band__lede {
  margin: 0;
  font-size: 17px;
  line-height: 1.9;
  color: rgba(247, 250, 241, 0.82);
}

.page-about .about-band__figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: var(--pill);
  background: linear-gradient(180deg, var(--sun), var(--flesh) 45%, var(--glow));
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 38px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 24px;
  height: 24px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--mist);
  border: 3px solid var(--flesh);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--sun);
}

.page-about .about-timeline__title {
  margin: 4px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 23px);
  font-weight: 700;
  color: #fff;
}

.page-about .about-timeline__body p {
  max-width: 56ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 250, 241, 0.82);
}

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

.page-about .about-more summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--sun);
  border-bottom: 1px dashed rgba(255, 235, 59, 0.5);
}

.page-about .about-more summary::-webkit-details-marker {
  display: none;
}

.page-about .about-more summary::after {
  content: "+";
  font-size: 14px;
}

.page-about .about-more[open] summary::after {
  content: "–";
}

.page-about .about-more summary:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 4px;
}

.page-about .about-more p {
  max-width: 54ch;
  margin: 10px 0 0;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 235, 59, 0.45);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 250, 241, 0.8);
}

/* ---------- 服务网络 ---------- */
.page-about .about-network__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-about .about-network__stat {
  border: var(--line);
  background: #fff;
  box-shadow: var(--hard-sm);
  padding: 18px;
}

.page-about .about-network__stat:nth-child(2) {
  background: var(--light);
}

.page-about .about-network__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 5.4vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: var(--deep);
}

.page-about .about-network__unit {
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--deep);
}

.page-about .about-network__desc {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--moss);
}

.page-about .about-network__foot,
.page-about .about-voice__foot {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-inline-link {
  color: var(--deep);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 2px solid var(--flesh);
  padding-bottom: 1px;
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  background: var(--light);
  border-color: var(--deep);
  outline: none;
}

/* ---------- 品质流程 ---------- */
.page-about .about-quality__grid {
  display: grid;
  gap: clamp(20px, 3.5vw, 40px);
}

.page-about .about-quality__list {
  counter-reset: q;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-quality__list li {
  position: relative;
  padding: 14px 16px 14px 50px;
  background: var(--mist);
  border: var(--line-thin);
  border-left: 5px solid var(--flesh);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-about .about-quality__list li::before {
  counter-increment: q;
  content: counter(q, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--brown);
}

.page-about .about-quality__list strong {
  color: var(--seed);
}

/* ---------- 2025 升级 ---------- */
.page-about .about-upgrade {
  margin-top: clamp(4px, 1.5vw, 10px);
  padding: clamp(18px, 3vw, 32px);
  border: var(--line);
  background: #fff;
  box-shadow: var(--hard);
}

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

.page-about .about-upgrade__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-top: var(--line-thin);
}

.page-about .about-upgrade__row:first-child {
  border-top: none;
  padding-top: 0;
}

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

.page-about .about-upgrade__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--brown);
}

.page-about .about-upgrade__from {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--moss);
  text-decoration: line-through;
  text-decoration-color: rgba(107, 122, 94, 0.5);
}

.page-about .about-upgrade__arrow {
  display: none;
}

.page-about .about-upgrade__to {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 500;
  color: var(--seed);
}

/* ---------- 口碑 ---------- */
.page-about .about-voice__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: clamp(20px, 3vw, 32px);
  margin-bottom: clamp(18px, 3vw, 26px);
  border: var(--line);
  background: var(--light);
  box-shadow: var(--hard-sm);
}

.page-about .about-voice__num {
  font-family: var(--font-mono);
  font-size: clamp(46px, 8vw, 72px);
  font-weight: 700;
  line-height: 1;
  color: var(--deep);
}

.page-about .about-voice__text p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-honor {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 8px 12px;
  background: #fff;
  border: var(--line-thin);
  font-size: 14.5px;
  color: var(--seed);
}

/* ---------- 三件事 ---------- */
.page-about .about-values {
  position: relative;
  overflow: hidden;
  margin-block: clamp(40px, 6vw, 80px) clamp(20px, 4vw, 40px);
  padding: clamp(24px, 4.5vw, 52px);
  border: var(--line);
  background: var(--deep);
  color: var(--mist);
  box-shadow: var(--hard);
}

.page-about .about-values::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -110px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(255, 235, 59, 0.35), rgba(255, 235, 59, 0) 70%);
  pointer-events: none;
}

.page-about .about-values__title {
  position: relative;
  z-index: 1;
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.4vw, 44px);
  font-weight: 900;
  line-height: 1.15;
  color: #fff;
}

.page-about .about-values__lede {
  position: relative;
  z-index: 1;
  max-width: 58ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 250, 241, 0.85);
}

.page-about .about-values__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-values__item {
  border-top: 3px solid var(--sun);
  padding-top: 14px;
}

.page-about .about-values__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  color: var(--sun);
}

.page-about .about-values__item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(247, 250, 241, 0.85);
}

.page-about .about-values__cta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: clamp(22px, 3.5vw, 34px);
}

.page-about .about-values__link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 2px solid var(--flesh);
  padding-bottom: 4px;
}

.page-about .about-values__link:hover,
.page-about .about-values__link:focus-visible {
  color: var(--sun);
  border-color: var(--sun);
  outline: none;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-about .about-network__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-voice__panel {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: clamp(18px, 3vw, 34px);
  }
}

@media (min-width: 760px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-quality__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

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

  .page-about .about-upgrade__row {
    grid-template-columns: 118px minmax(0, 1fr) 26px minmax(0, 1.1fr);
    align-items: baseline;
    gap: 18px;
  }

  .page-about .about-upgrade__arrow {
    display: block;
    font-family: var(--font-mono);
    color: var(--flesh);
  }

  .page-about .about-upgrade__row:first-child {
    padding-top: 16px;
  }

  .page-about .about-upgrade__row:last-child {
    padding-bottom: 16px;
    border-bottom: var(--line-thin);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero,
  .page-about .about-sec {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
  }

  .page-about .about-rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-top: 6px;
  }

  .page-about .about-rail__note {
    display: block;
  }

  .page-about .about-timeline__item:nth-child(even) {
    margin-left: clamp(0px, 7vw, 110px);
  }

  .page-about .about-timeline {
    padding-right: clamp(0px, 4vw, 60px);
  }

  .page-about .about-band__head {
    padding-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-more summary,
  .page-about .about-inline-link,
  .page-about .about-values__link {
    transition: none;
  }
}