.page-about{
  --about-pad: clamp(28px, 5vw, 76px);
  position: relative;
  background: var(--c-light);
  color: var(--c-night);
  overflow-x: clip;
}
.page-about .section-label{
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-accent);
}
.page-about .breadcrumb{
  margin-bottom: 14px;
}
.page-about .breadcrumb__item{
  color: rgba(245,247,250,.72);
  font-size: 13px;
  letter-spacing: .06em;
}
.page-about .breadcrumb__item[aria-current="page"]{
  color: var(--c-support);
}
.page-about .breadcrumb__item:not(:last-child)::after{
  content: "/";
  margin: 0 8px;
  color: var(--c-accent);
}

/* ===== Hero / 品牌故事 ===== */
.page-about__hero{
  position: relative;
  padding: 28px 16px 64px;
  background: var(--grad-hero);
  color: var(--c-light);
  overflow: hidden;
}
.page-about__hero::before{
  content: "";
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 260px;
  height: 110px;
  background: var(--c-accent);
  transform: rotate(-14deg);
  border-radius: 24px 8px 8px 8px;
  z-index: 1;
}
.page-about__hero-inner{
  position: relative;
  z-index: 2;
  display: grid;
  gap: 30px;
  align-items: center;
}
.page-about__hero .section-label{
  color: var(--c-support);
}
.page-about__hero-title{
  margin: .14em 0 .12em;
  font-family: var(--font-head);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(46px, 8.6vw, 96px);
  line-height: .94;
  letter-spacing: .01em;
  text-transform: uppercase;
  max-width: 6em;
}
.page-about__hero-subtitle{
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: clamp(18px, 2.6vw, 30px);
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.page-about__hero-desc{
  max-width: 48ch;
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.7;
  opacity: .88;
}
.page-about__hero-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about__hero .btn--ghost{
  border: 1px solid rgba(255,255,255,.4);
  color: var(--c-light);
}
.page-about__hero .btn--ghost:hover{
  border-color: var(--c-light);
  background: rgba(255,255,255,.12);
}
.page-about__hero-rail{
  position: absolute;
  right: 12px;
  top: 22%;
  z-index: 2;
  margin: 0;
  writing-mode: vertical-rl;
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: .52em;
  text-transform: uppercase;
  color: rgba(245,247,250,.4);
}
.page-about__hero-media{
  position: relative;
  height: 300px;
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(15,27,46,.45);
  transform: rotate(2deg);
}
.page-about__hero-media img{
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}
.page-about__hero-badge{
  position: absolute;
  right: 12px;
  top: 12px;
  z-index: 3;
  padding: 8px 14px;
  background: var(--c-support);
  color: var(--c-primary-3);
  font-size: 13px;
  font-weight: 800;
  border-radius: 999px;
  transform: rotate(4deg);
}
.page-about__hero-stamp{
  position: absolute;
  left: 0;
  bottom: 22px;
  z-index: 3;
  padding: 12px 20px 12px 30px;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: .14em;
  text-transform: uppercase;
  border-radius: 0 999px 999px 0;
  box-shadow: var(--shadow-card);
}
@media(min-width: 820px){
  .page-about__hero{
    padding: 48px 24px 72px;
  }
  .page-about__hero-inner{
    grid-template-columns: 7fr 5fr;
    min-height: 520px;
  }
  .page-about__hero-media{
    height: 460px;
  }
}
@media(max-width: 859px){
  .page-about__hero-rail{
    display: none;
  }
}

/* ===== 品牌使命 ===== */
.page-about__mission{
  padding: var(--about-pad) 16px;
}
.page-about__mission-banner{
  position: relative;
  display: grid;
  gap: 24px;
  padding: 32px 24px;
  background: var(--c-primary);
  color: var(--c-light);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.page-about__mission-banner::before{
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 170px;
  height: 170px;
  border: 26px solid rgba(244,162,97,.18);
  border-radius: 50%;
}
.page-about__mission-banner::after{
  content: "90S REFRESH / SERVICE";
  position: absolute;
  right: 6px;
  bottom: 18px;
  writing-mode: vertical-rl;
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: .4em;
  color: rgba(255,255,255,.16);
}
.page-about__mission-content{
  position: relative;
  z-index: 1;
}
.page-about__mission-content h2{
  margin: 6px 0 14px;
  font-family: var(--font-head);
  font-size: clamp(28px, 4.4vw, 48px);
  line-height: 1.08;
  text-transform: uppercase;
}
.page-about__mission-content p{
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.7;
  opacity: .86;
}
.page-about__mission-content p + p{
  margin-top: 12px;
}
.page-about__mission-panel{
  position: relative;
  z-index: 1;
  min-height: 186px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--c-accent);
  border-radius: var(--r-md);
  transform: rotate(1.6deg);
  box-shadow: var(--shadow-card);
}
.page-about .stat-num{
  font-family: var(--font-head);
  font-size: clamp(58px, 10vw, 96px);
  line-height: .9;
  color: #fff;
}
.page-about__mission-number{
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
}
.page-about__mission-unit{
  font-style: normal;
  font-family: var(--font-head);
  font-size: 34px;
  color: var(--c-support);
}
.page-about__mission-caption{
  margin-top: 8px;
  font-size: 14px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(255,255,255,.86);
}
@media(min-width: 860px){
  .page-about__mission-banner{
    grid-template-columns: 2fr 1.1fr;
    padding: 52px 44px;
  }
}

/* ===== 核心数据 ===== */
.page-about__stats{
  position: relative;
  padding: var(--about-pad) 16px;
  background: var(--grad-hero);
  color: var(--c-light);
  overflow: hidden;
}
.page-about__stats-bg{
  position: absolute;
  inset: 0;
}
.page-about__stats-bg img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .14;
  filter: saturate(.65) brightness(.72);
}
.page-about__stats-veil{
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,27,46,.94) 0%, rgba(42,74,127,.58) 100%);
}
.page-about__stats .container{
  position: relative;
  z-index: 2;
}
.page-about__stats .section-label{
  color: var(--c-support);
}
.page-about__stats-head{
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
}
.page-about__stats-head h2{
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-size: clamp(30px, 4.6vw, 56px);
  line-height: 1;
  text-transform: uppercase;
}
.page-about__stats-note{
  max-width: 26ch;
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--c-accent);
  font-size: 14px;
  line-height: 1.6;
  color: rgba(245,247,250,.8);
}
.page-about__stats-grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.page-about__stat-card{
  position: relative;
  min-height: 134px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 20px 16px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-md);
  backdrop-filter: blur(10px);
  transition: transform .3s ease, background .3s ease, border-color .3s ease;
}
.page-about__stat-card::after{
  content: "";
  position: absolute;
  right: -12px;
  top: -12px;
  width: 30px;
  height: 30px;
  border: 3px solid var(--c-accent);
  border-radius: 9px;
  transform: rotate(45deg);
  opacity: .72;
}
.page-about__stat-card:hover{
  transform: translateY(-4px);
  border-color: var(--c-support);
  background: rgba(255,255,255,.13);
}
.page-about__stat-card--lead .page-about__stat-num{
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--c-accent);
  color: #fff;
}
.page-about__stat-num{
  font-family: var(--font-head);
  font-size: clamp(28px, 3vw, 44px);
  line-height: .95;
  color: var(--c-support);
  letter-spacing: .01em;
}
.page-about__stat-label{
  font-size: 14px;
  opacity: .82;
}
@media(min-width: 640px){
  .page-about__stats-grid{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media(min-width: 1120px){
  .page-about__stats-grid{
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}
@media(min-width: 720px){
  .page-about__stats-head{
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

/* ===== 发展历程 ===== */
.page-about__timeline{
  position: relative;
  padding: var(--about-pad) 16px;
  background: var(--c-primary-3);
  color: var(--c-light);
  overflow: hidden;
}
.page-about__timeline::after{
  content: "02 / 04";
  position: absolute;
  right: 12px;
  bottom: 12px;
  font-family: var(--font-head);
  font-size: 96px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: .02em;
  color: rgba(255,255,255,.045);
}
.page-about__timeline-head{
  position: relative;
  z-index: 1;
  margin-bottom: 40px;
}
.page-about__timeline-head h2{
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-size: clamp(30px, 4.6vw, 56px);
  line-height: 1;
  text-transform: uppercase;
}
.page-about__timeline-list{
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding-left: 0;
  list-style: none;
}
.page-about__timeline-list::before{
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: repeating-linear-gradient(180deg, var(--c-accent) 0 6px, transparent 6px 14px);
}
.page-about__timeline-item{
  position: relative;
  padding: 0 0 30px 34px;
}
.page-about__timeline-item:last-child{
  padding-bottom: 0;
}
.page-about__timeline-item::before{
  content: "";
  position: absolute;
  left: -3px;
  top: 26px;
  width: 16px;
  height: 16px;
  background: var(--c-accent);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(230,57,70,.22);
}
.page-about__timeline-card{
  position: relative;
  padding: 24px 22px;
  background: var(--c-primary);
  border-radius: var(--r-md);
  transition: transform .3s ease, background .3s ease, box-shadow .3s ease;
}
.page-about__timeline-card::after{
  content: "";
  position: absolute;
  top: 22px;
  left: 0;
  width: 6px;
  height: 36px;
  border-radius: 0 8px 8px 0;
  background: var(--c-accent);
}
.page-about__timeline-card:hover,
.page-about__timeline-item:focus-within .page-about__timeline-card{
  transform: translateY(-4px);
  background: var(--c-primary-2);
  box-shadow: 0 16px 36px rgba(0,0,0,.3);
}
.page-about__timeline-tag{
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 12px;
  background: var(--c-accent-soft);
  color: var(--c-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-radius: 999px;
  transition: background .3s ease, color .3s ease;
}
.page-about__timeline-card:hover .page-about__timeline-tag{
  background: var(--c-accent);
  color: #fff;
}
.page-about__timeline-card h3{
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.1;
  text-transform: uppercase;
}
.page-about__timeline-card p{
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  opacity: .85;
}
@media(min-width: 900px){
  .page-about__timeline-list{
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 56px;
  }
  .page-about__timeline-list::before{
    left: 50%;
    transform: translateX(-1px);
  }
  .page-about__timeline-item{
    padding: 0 56px 42px 0;
  }
  .page-about__timeline-item:nth-child(even){
    padding: 0 0 42px 56px;
  }
  .page-about__timeline-item::before{
    left: auto;
    right: -36px;
  }
  .page-about__timeline-item:nth-child(even)::before{
    left: -36px;
    right: auto;
  }
  .page-about__timeline-card::after{
    left: auto;
    right: 0;
    border-radius: 8px 0 0 8px;
  }
  .page-about__timeline-item:nth-child(even) .page-about__timeline-card::after{
    left: 0;
    right: auto;
    border-radius: 0 8px 8px 0;
  }
}

/* ===== 资质与荣誉 ===== */
.page-about__trust{
  padding: var(--about-pad) 16px;
  background: var(--c-light);
}
.page-about__trust-grid{
  display: grid;
  gap: 34px;
  align-items: center;
}
.page-about__trust-copy h2{
  margin: 6px 0 14px;
  font-family: var(--font-head);
  font-size: clamp(30px, 4.4vw, 56px);
  line-height: 1.04;
  text-transform: uppercase;
}
.page-about__trust-copy > p{
  max-width: 50ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  opacity: .86;
}
.page-about__trust-list{
  display: grid;
  gap: 12px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
}
.page-about__trust-item{
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  background: #fff;
  border-left: 4px solid var(--c-accent);
  border-radius: var(--r-md);
  box-shadow: 0 6px 22px rgba(15,27,46,.06);
  transition: transform .25s ease, box-shadow .25s ease;
}
.page-about__trust-item:hover{
  transform: translateX(8px);
  box-shadow: 0 12px 30px rgba(15,27,46,.1);
}
.page-about__trust-item strong{
  display: inline-block;
  width: fit-content;
  padding: 4px 14px;
  background: var(--c-primary);
  color: #fff;
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-radius: 999px;
}
.page-about__trust-item span{
  font-size: 15px;
  line-height: 1.6;
  color: #2c2f33;
}
.page-about__trust-foot{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-top: 4px;
}
.page-about__trust-foot p{
  max-width: 36ch;
  margin: 0;
  font-size: 14px;
  opacity: .8;
}
.page-about__trust-media{
  position: relative;
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.page-about__trust-media::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--c-accent) 0 42%, var(--c-support) 42% 100%);
  z-index: 2;
}
.page-about__trust-media img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform .5s ease;
}
.page-about__trust-media:hover img{
  transform: scale(1.03);
}
.page-about__trust-cap{
  position: absolute;
  left: 14px;
  bottom: 14px;
  margin: 0;
  padding: 8px 16px;
  background: rgba(15,27,46,.78);
  color: #fff;
  font-size: 13px;
  letter-spacing: .06em;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
@media(min-width: 900px){
  .page-about__trust-grid{
    grid-template-columns: 7fr 5fr;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about *,
  .page-about *::before,
  .page-about *::after{
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}