/* ==========================================================
   品牌与团队 / page-about
   ========================================================== */

.page-about {
  --about-pad-y: 52px;
  --about-rule: 1px solid var(--line);
}

@media (min-width: 900px) {
  .page-about {
    --about-pad-y: 92px;
  }
}

.page-about .section {
  padding-block: var(--about-pad-y);
}

/* ---------- 章节标题组 ---------- */

.page-about .section__head {
  margin-bottom: 30px;
}

.page-about .section__index {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--brick);
  margin: 0 0 12px;
}

.page-about .section__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(24px, 5.4vw, 34px);
  line-height: 1.36;
  letter-spacing: 0.02em;
  color: var(--graphite);
  margin: 0 0 16px;
}

.page-about .section__lede {
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--ink-2);
  margin: 0;
  max-width: 36em;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-block: 26px 46px;
}

.page-about .about-crumbs {
  margin-bottom: 24px;
}

.page-about .about-hero__kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--note);
  margin: 0 0 16px;
}

.page-about .about-hero__title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(28px, 7.2vw, 46px);
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--graphite);
  margin: 0 0 20px;
  max-width: 18ch;
}

.page-about .about-hero__lede {
  font-size: 16px;
  line-height: 2;
  color: var(--ink-2);
  margin: 0 0 36px;
  max-width: 38em;
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
  margin: 0;
  padding-top: 28px;
  border-top: var(--about-rule);
}

@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-figures__item dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--note);
  margin-bottom: 8px;
}

.page-about .about-figures__item dd {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-figures__item dd .mono {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 500;
  color: var(--brick);
  margin-right: 2px;
}

/* ---------- 页内索引条 ---------- */

.page-about .about-index {
  background: var(--gold-soft);
  border-block: var(--about-rule);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 12px 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__list a {
  display: block;
  white-space: nowrap;
  padding: 6px 13px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  text-decoration: none;
  background: var(--card);
  border: var(--about-rule);
  border-radius: 2px;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  border-color: var(--line-strong);
  color: var(--brick);
}

/* ---------- 01 团队分工 ---------- */

.page-about .about-roles__grid {
  display: grid;
  gap: 44px;
}

@media (min-width: 900px) {
  .page-about .about-roles__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 60px;
    align-items: start;
  }
}

.page-about .role-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--about-rule);
}

.page-about .role-card {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-bottom: var(--about-rule);
}

@media (min-width: 700px) {
  .page-about .role-card {
    grid-template-columns: 44px minmax(0, 1fr) 168px;
    gap: 24px;
    align-items: start;
    padding: 26px 0;
  }
}

.page-about .role-card__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--brick);
  margin: 4px 0 0;
}

.page-about .role-card__name {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--graphite);
  margin: 0 0 10px;
}

.page-about .role-card__duty {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

.page-about .role-card__beat {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--note);
  margin: 0;
}

@media (min-width: 700px) {
  .page-about .role-card__beat {
    text-align: right;
    margin-top: 5px;
  }
}

.page-about .about-roles__side {
  display: grid;
  gap: 18px;
}

/* ---------- 通用图注与旁注 ---------- */

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

.page-about .figure__media {
  overflow: hidden;
  border: var(--about-rule);
  border-radius: 2px;
  background: var(--gold-soft);
  box-shadow: var(--shadow);
}

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

.page-about .figure--portrait .figure__media img {
  max-height: 520px;
}

.page-about .figure__caption {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.75;
  color: var(--note);
}

.page-about .about-note {
  margin: 0;
  padding: 16px 18px;
  background: var(--card);
  border-left: 2px solid var(--gold);
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-2);
}

/* ---------- 02 师傅准入（深色分区） ---------- */

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

.page-about .about-cert .section__index {
  color: var(--gold);
}

.page-about .about-cert .section__title {
  color: var(--paper);
}

.page-about .about-cert .section__lede {
  color: rgba(246, 241, 230, 0.76);
}

.page-about .tier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-light);
}

.page-about .tier {
  display: grid;
  gap: 14px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-light);
}

@media (min-width: 820px) {
  .page-about .tier {
    grid-template-columns: 68px minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 36px;
    align-items: start;
    padding: 34px 0;
  }
}

.page-about .tier__mark {
  font-family: var(--mono);
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--gold);
  margin: 0;
  line-height: 1.2;
}

.page-about .tier__name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-about .tier__position {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(246, 241, 230, 0.72);
}

.page-about .tier__points {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-about .tier__points li {
  position: relative;
  padding-left: 17px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(246, 241, 230, 0.86);
}

.page-about .tier__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 7px;
  height: 1px;
  background: var(--gold);
}

.page-about .tier__validity {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-cert__foot {
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-light);
  font-size: 14px;
  line-height: 1.9;
  color: rgba(246, 241, 230, 0.76);
  max-width: 44em;
}

/* ---------- 03 服务准则 ---------- */

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

.page-about .standard-step {
  position: relative;
  padding: 0 0 32px 32px;
  border-left: 1px solid var(--line);
}

.page-about .standard-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .standard-step::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--paper);
}

.page-about .standard-step__phase {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--brick);
  margin: 0 0 10px;
}

.page-about .standard-step__title {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--graphite);
  margin: 0 0 10px;
}

.page-about .standard-step__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-2);
  max-width: 36em;
}

/* ---------- 04 质检与复核 ---------- */

.page-about .about-audit {
  background: var(--card);
  border-block: var(--about-rule);
}

.page-about .audit-frame {
  margin: 0 0 40px;
}

.page-about .audit-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  max-height: 420px;
  object-fit: cover;
  border: var(--about-rule);
  border-radius: 2px;
}

.page-about .audit-figures {
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 18px;
}

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

.page-about .audit-figures li {
  padding-top: 14px;
  border-top: 2px solid var(--gold);
}

.page-about .audit-figures b {
  display: block;
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 500;
  line-height: 1.2;
  color: var(--ink);
}

.page-about .audit-figures span {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--note);
}

.page-about .audit-flow {
  padding: 24px 22px 26px;
  background: var(--paper);
  border: var(--about-rule);
  border-left: 3px solid var(--brick);
  border-radius: 2px;
}

.page-about .audit-flow__title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--graphite);
  margin: 0 0 16px;
}

.page-about .audit-flow__list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
}

.page-about .audit-flow__list li {
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-about .audit-flow__cta {
  margin: 22px 0 0;
}

/* ---------- 05 发展阶段 ---------- */

.page-about .about-timeline__grid {
  display: grid;
  gap: 44px;
}

@media (min-width: 900px) {
  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 64px;
    align-items: start;
  }
}

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

.page-about .stage {
  position: relative;
  padding: 0 0 36px 30px;
  border-left: 1px solid var(--line-gold);
}

.page-about .stage:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .stage::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--gold);
}

.page-about .stage__years {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--gold);
  margin: 0 0 10px;
}

.page-about .stage__name {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--graphite);
  margin: 0 0 10px;
}

.page-about .stage__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-2);
  max-width: 34em;
}

/* ---------- 06 落到手上 ---------- */

.page-about .about-gains {
  background: var(--gold-soft);
}

.page-about .gain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(18, 60, 51, 0.16);
  border: 1px solid rgba(18, 60, 51, 0.16);
  border-radius: 2px;
  overflow: hidden;
}

@media (min-width: 760px) {
  .page-about .gain-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .gain-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .gain {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px 26px;
  background: var(--card);
}

.page-about .gain__title {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin: 0;
}

.page-about .gain__body {
  flex: 1;
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-about .gain__link {
  align-self: flex-start;
  font-size: 13px;
  font-weight: 500;
  color: var(--brick);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .gain__link:hover,
.page-about .gain__link:focus-visible {
  color: var(--brick-deep);
}

/* ---------- 减少动效 ---------- */

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