/* ===== 品牌故事页 · page-about ===== */
.page-about {
  --about-rail: 2.5rem;
  --about-dot: 20px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
}

.page-about .about-figure {
  margin: 1.1rem 0 0;
  max-width: 100%;
}

.page-about .about-figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-figure .media__cap {
  display: block;
  margin-top: .5rem;
  font-size: var(--fs-12);
  color: var(--gray);
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(2rem, 5vw, 3.25rem) 0 clamp(2.25rem, 5vw, 3.5rem);
  border-bottom: var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 2.25rem;
}

.page-about .about-hero__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  line-height: 1.24;
  letter-spacing: .01em;
  margin: .9rem 0 1.1rem;
}

.page-about .about-hero__lead {
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: 1.85;
  margin: 0;
}

.page-about .about-annot {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .3em;
  color: var(--gold-deep);
  text-transform: uppercase;
}

.page-about .about-hero__annot {
  position: absolute;
  right: 0;
  top: 3.5rem;
  display: none;
}

.page-about .about-hero__index {
  border-top: var(--line);
  padding-top: .75rem;
}

.page-about .about-index {
  list-style: none;
  margin: .5rem 0 0;
  padding: 0;
  display: grid;
  gap: .25rem;
}

.page-about .about-index a {
  display: flex;
  align-items: baseline;
  gap: .85rem;
  padding: .6rem .35rem;
  border-bottom: var(--line-gold);
  color: var(--ink);
  text-decoration: none;
  font-size: var(--fs-14);
  transition: background-color .2s ease, color .2s ease, padding-left .2s ease;
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  background: var(--rice);
  color: var(--red-deep);
  padding-left: .75rem;
}

.page-about .about-index .mono {
  color: var(--gold-deep);
  font-size: var(--fs-12);
  letter-spacing: .1em;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 4fr;
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: start;
  }
}

@media (min-width: 1140px) {
  .page-about .about-hero__annot {
    display: block;
  }
}

/* ---------- 区块通用 ---------- */
.page-about .section {
  padding: clamp(2.75rem, 6vw, 4.75rem) 0;
}

.page-about .section__head {
  max-width: 46rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .section__num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .24em;
  color: var(--red);
  margin: 0 0 .75rem;
}

.page-about .section__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.25rem);
  line-height: 1.34;
  margin: 0 0 .9rem;
}

.page-about .section__lead {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--gray);
}

/* ---------- 历程主轴 ---------- */
.page-about .timeline {
  position: relative;
  display: grid;
  gap: 2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: .4rem;
  bottom: .4rem;
  width: 2px;
  background: linear-gradient(180deg, var(--red-deep) 0%, var(--red) 45%, var(--gold) 100%);
  opacity: .85;
}

.page-about .timeline__item {
  position: relative;
  padding-left: var(--about-rail);
}

.page-about .timeline__dot {
  position: absolute;
  left: 0;
  top: .4rem;
  width: var(--about-dot);
  height: var(--about-dot);
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--paper);
  box-shadow: 0 0 0 4px var(--paper);
}

.page-about .timeline__dot::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--red);
}

.page-about .timeline__body {
  padding: 1.15rem 1.15rem 1.05rem;
  background: var(--paper);
}

.page-about .timeline__date {
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--red-deep);
  margin: 0 0 .55rem;
}

.page-about .timeline__body .h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  line-height: 1.45;
  margin: 0 0 .6rem;
}

.page-about .timeline__body p {
  margin: 0 0 .5rem;
  line-height: 1.8;
  font-size: var(--fs-16);
}

@media (min-width: 880px) {
  .page-about {
    --about-rail: 4.5rem;
    --about-dot: 22px;
  }

  .page-about .timeline::before {
    left: 10px;
  }

  .page-about .timeline__item:nth-child(even) .timeline__body {
    margin-right: clamp(0rem, 6vw, 5rem);
  }

  .page-about .timeline__item:nth-child(odd) .timeline__body {
    margin-left: clamp(0rem, 3vw, 2rem);
  }

  .page-about .timeline__body {
    padding: 1.5rem 1.5rem 1.35rem;
  }
}

/* ---------- 折叠补充说明 ---------- */
.page-about .about-acc {
  margin-top: .75rem;
}

.page-about .about-acc .acc__btn {
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
  font-size: var(--fs-14);
  color: var(--red-deep);
  background: var(--rice);
  border: 1px solid var(--champagne);
  padding: .55rem .8rem;
  cursor: pointer;
}

.page-about .about-acc .acc__btn:hover {
  border-color: var(--gold);
}

.page-about .about-acc .acc__panel {
  padding: .7rem .25rem 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--gray);
}

.page-about .about-acc .acc__panel p {
  margin: 0;
}

/* ---------- 三条产品线 ---------- */
.page-about .lineup {
  display: grid;
  gap: 2rem;
}

.page-about .lineup__list {
  display: grid;
  gap: 0;
}

.page-about .lineup__row {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 1rem;
  padding: 1.2rem 0;
  border-bottom: var(--line-gold);
}

.page-about .lineup__row:first-child {
  border-top: var(--line-gold);
}

.page-about .lineup__num {
  grid-row: 1 / span 2;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  line-height: 1;
  color: var(--paper);
  background: var(--gold);
  width: 2.4rem;
  height: 2.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .lineup__title {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  line-height: 1.4;
}

.page-about .lineup__desc {
  grid-column: 2;
  margin: .4rem 0 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--gray);
}

.page-about .about-cadence {
  padding: 1.35rem 1.35rem 1.2rem;
  align-self: start;
}

.page-about .about-cadence__big {
  font-size: var(--fs-40);
  line-height: 1;
  color: var(--red-deep);
  margin: .5rem 0 .6rem;
}

.page-about .about-cadence__text {
  margin: 0 0 1rem;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--gray);
}

.page-about .about-cadence__list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: grid;
  gap: .5rem;
  font-size: var(--fs-14);
  line-height: 1.7;
}

.page-about .about-cadence__list li {
  padding-left: .9rem;
  position: relative;
  border-bottom: 1px dashed var(--champagne);
  padding-bottom: .5rem;
}

.page-about .about-cadence__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6em;
  width: 5px;
  height: 5px;
  background: var(--red);
}

.page-about .about-cadence__list .mono {
  color: var(--gold-deep);
  font-weight: 700;
}

@media (min-width: 880px) {
  .page-about .lineup {
    grid-template-columns: 8fr 4fr;
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }
}

/* ---------- 服务网络 ---------- */
.page-about .about-figure--lead {
  margin: 0 0 clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .net {
  display: grid;
  gap: 1rem;
}

.page-about .net__row {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  position: relative;
}

.page-about .net__row + .net__row {
  padding-top: 1.9rem;
}

.page-about .net__row + .net__row::before {
  content: "";
  position: absolute;
  top: .55rem;
  left: 1rem;
  right: 1rem;
  border-top: 1px dashed var(--gold);
  opacity: .8;
}

.page-about .net-node {
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: .9rem 1rem;
  transition: transform .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-about .net-node__label {
  margin: 0 0 .35rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--gray);
}

.page-about .net-node__value {
  margin: 0 0 .4rem;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  line-height: 1;
  color: var(--red-deep);
}

.page-about .net-node__meta {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--gray);
  opacity: .78;
  transition: opacity .2s ease;
}

.page-about .net-node:hover,
.page-about .net-node:focus-within {
  transform: translateY(-2px);
  border-color: var(--red);
}

.page-about .net-node:hover .net-node__meta {
  opacity: 1;
}

.page-about .net-node--fujian {
  background: var(--red);
  border-color: var(--red-deep);
  box-shadow: var(--shadow-print);
}

.page-about .net-node--fujian .net-node__label {
  color: var(--champagne);
}

.page-about .net-node--fujian .net-node__value {
  color: var(--paper);
}

.page-about .net-node--fujian .net-node__meta {
  color: var(--paper);
  opacity: .92;
}

.page-about .net-node--accent {
  border-color: var(--gold);
  background: var(--rice);
}

@media (min-width: 700px) {
  .page-about .net__row {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }

  .page-about .net-node--wide {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: auto auto 1fr;
    align-items: baseline;
    gap: .4rem 1.25rem;
  }

  .page-about .net-node--wide .net-node__label {
    margin: 0;
  }

  .page-about .net-node--wide .net-node__value {
    margin: 0;
    font-size: var(--fs-40);
  }

  .page-about .net-node--wide .net-node__meta {
    margin: 0;
  }
}

/* ---------- 培训体系 ---------- */
.page-about .train {
  display: grid;
  gap: 2rem;
}

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

.page-about .about-steps .step {
  position: relative;
  padding: 0 0 1.5rem 2.6rem;
  margin-left: .7rem;
  border-left: 1px dashed var(--champagne);
}

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

.page-about .about-steps .step__num {
  position: absolute;
  left: -.75rem;
  top: .15rem;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gold);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
}

.page-about .about-steps .step__title {
  margin: 0 0 .35rem;
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  line-height: 1.4;
}

.page-about .about-steps .step__body {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--gray);
}

.page-about .train__side {
  display: grid;
  gap: 1.25rem;
  align-content: start;
}

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

.page-about .train__note {
  padding: 1.1rem 1.15rem;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--gray);
}

.page-about .train__note p {
  margin: .5rem 0 0;
}

@media (min-width: 880px) {
  .page-about .train {
    grid-template-columns: 7fr 5fr;
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }
}

/* ---------- 评价与续约 ---------- */
.page-about .reviews {
  display: grid;
  gap: 1.75rem;
}

.page-about .reviews__stat {
  padding: 1.35rem 1.35rem 1.2rem;
  align-self: start;
}

.page-about .reviews__big {
  margin: .5rem 0 .6rem;
  font-size: clamp(3rem, 9vw, 4.5rem);
  line-height: .95;
  color: var(--red);
}

.page-about .reviews__big span {
  font-size: .45em;
  color: var(--gold-deep);
  margin-left: .1em;
}

.page-about .reviews__text {
  margin: 0 0 1rem;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--gray);
}

.page-about .std-list {
  border-top: var(--line);
}

.page-about .std-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: .9rem;
  row-gap: .25rem;
  padding: .85rem .2rem;
  border-bottom: var(--line-gold);
  align-items: baseline;
}

.page-about .std-list__idx {
  font-size: var(--fs-12);
  color: var(--gold-deep);
}

.page-about .std-list__name {
  font-family: var(--font-serif);
  font-size: var(--fs-16);
  color: var(--ink);
}

.page-about .std-list__note {
  grid-column: 2;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--gray);
}

.page-about .std-list__date {
  grid-column: 2;
  font-size: var(--fs-12);
  color: var(--teal);
  letter-spacing: .08em;
}

@media (min-width: 620px) {
  .page-about .std-list__item {
    grid-template-columns: auto 12rem 1fr auto;
  }

  .page-about .std-list__note,
  .page-about .std-list__date {
    grid-column: auto;
  }
}

@media (min-width: 880px) {
  .page-about .reviews {
    grid-template-columns: 5fr 7fr;
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-bottom: clamp(3rem, 7vw, 5.5rem);
}

.page-about .about-next__panel {
  background: var(--rice);
  border: var(--line);
  box-shadow: var(--shadow-print);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  display: grid;
  gap: 1.5rem;
}

.page-about .about-next__title {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.35;
  margin: 0 0 .75rem;
}

.page-about .about-next__text p {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--gray);
}

.page-about .about-next__btns {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

@media (min-width: 900px) {
  .page-about .about-next__panel {
    grid-template-columns: 7fr 4fr;
    align-items: center;
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-about .about-next__btns {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index a,
  .page-about .net-node,
  .page-about .net-node__meta {
    transition: none;
  }

  .page-about .net-node:hover,
  .page-about .net-node:focus-within {
    transform: none;
  }
}