/* ============================================================
   page-about · 品牌档案
   ============================================================ */

.page-about {
  --ab-block-pad: clamp(48px, 7vw, 96px);
  --ab-gap: clamp(20px, 3vw, 40px);
  --ab-card-bg: #FFFDF8;
  --ab-cyan-glow: 0 0 0 1px rgba(0, 229, 255, .38), 0 0 26px -8px rgba(0, 229, 255, .55);
  --ab-line-cream: 2px solid rgba(30, 26, 22, .88);
  --ab-line-ghost: 1px solid rgba(199, 208, 219, .24);
  display: block;
  background: var(--cream);
  color: var(--brown);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  letter-spacing: -.015em;
  text-wrap: balance;
}

/* ------------------------------------------------------------
   HERO
   ------------------------------------------------------------ */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.4vw, 40px) 0 clamp(46px, 6vw, 84px);
  color: var(--cream);
  background:
    radial-gradient(900px 520px at 82% -14%, rgba(0, 229, 255, .20), transparent 62%),
    radial-gradient(700px 420px at 4% 108%, rgba(255, 138, 61, .14), transparent 60%),
    linear-gradient(166deg, var(--ink) 0%, var(--ink-deep) 60%, #04101F 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--amber) 58%, var(--red) 100%);
}

.page-about .about-hero .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--silver);
}

.page-about .about-hero .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-about .about-hero .breadcrumb a:hover,
.page-about .about-hero .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-hero .breadcrumb__sep {
  margin: 0 9px;
  color: var(--cyan-ink);
}

.page-about .about-hero .breadcrumb__current {
  color: var(--cream);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
  align-items: end;
  margin-top: clamp(22px, 3.4vw, 40px);
}

.page-about .about-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-size: clamp(32px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.06;
  color: var(--cream);
}

.page-about .about-hero__lead {
  max-width: 58ch;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--silver);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border: 2px solid rgba(199, 208, 219, .30);
  box-shadow: 8px 8px 0 rgba(0, 229, 255, .26);
  background: linear-gradient(150deg, #0D2C50, #06152B);
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-hero__caption {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--silver);
  background: rgba(6, 21, 43, .82);
  border-top: 1px solid rgba(199, 208, 219, .18);
}

.page-about .about-hero__badge {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink-deep);
  background: var(--cyan);
  border-radius: 2px;
}

/* ------------------------------------------------------------
   通用区块
   ------------------------------------------------------------ */

.page-about .ab-block {
  padding: var(--ab-block-pad) 0;
}

.page-about .ab-block--cream {
  background: var(--cream);
  color: var(--brown);
}

.page-about .ab-block--mist {
  background:
    radial-gradient(760px 400px at 88% 0%, rgba(0, 229, 255, .10), transparent 62%),
    var(--mist);
  color: var(--brown);
}

.page-about .ab-block--ink {
  background:
    radial-gradient(820px 460px at 12% 0%, rgba(0, 229, 255, .14), transparent 60%),
    linear-gradient(172deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--cream);
}

.page-about .ab-head {
  max-width: 78ch;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-about .ab-head .section__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--cyan-ink);
}

.page-about .ab-block--ink .ab-head .section__eyebrow {
  color: var(--cyan);
}

.page-about .ab-head .section__title {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 48px);
  font-weight: 800;
  line-height: 1.14;
  color: var(--brown);
}

.page-about .ab-block--ink .ab-head .section__title {
  color: var(--cream);
}

.page-about .ab-head .section__lead {
  margin: 18px 0 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.8;
  color: var(--slate);
}

.page-about .ab-block--ink .ab-head .section__lead {
  color: var(--silver);
}

/* ------------------------------------------------------------
   01 品牌起源
   ------------------------------------------------------------ */

.page-about .ab-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .ab-origin__drop {
  margin: 0;
  padding-left: clamp(16px, 2vw, 26px);
  border-left: 4px solid var(--amber);
  font-family: var(--font-head);
  font-size: clamp(19px, 2.2vw, 27px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--brown);
}

.page-about .ab-origin__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 26px);
}

.page-about .ab-origin__cols p {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: #37312A;
}

.page-about .ab-origin__panel {
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ab-card-bg);
  border: var(--ab-line-cream);
  box-shadow: var(--shadow-brut);
}

.page-about .ab-origin__panel-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .ab-facts {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(30, 26, 22, .22);
}

.page-about .ab-facts__row:last-child {
  border-bottom: 0;
}

.page-about .ab-facts dt {
  font-size: 14px;
  color: var(--slate);
}

.page-about .ab-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

/* ------------------------------------------------------------
   02 服务网络
   ------------------------------------------------------------ */

.page-about .ab-net__stats {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0 0 clamp(26px, 3.4vw, 44px);
  padding: 0;
}

.page-about .ab-net__stat {
  position: relative;
  padding: clamp(18px, 2.2vw, 26px);
  border: var(--ab-line-ghost);
  background: rgba(6, 21, 43, .55);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, .06);
}

.page-about .ab-net__stat .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  text-shadow: 0 0 30px rgba(0, 229, 255, .35);
}

.page-about .ab-net__stat .stat__label {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--silver);
}

.page-about .ab-net__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .ab-net__cities-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan-ink);
}

.page-about .ab-block--ink .ab-net__cities-title {
  color: var(--cyan);
}

.page-about .ab-net__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 0;
  padding: 0;
}

.page-about .ab-net__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  counter-reset: none;
}

.page-about .ab-net__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px dashed rgba(199, 208, 219, .22);
}

.page-about .ab-net__step:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-net__step-no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--amber);
  padding-top: 2px;
}

.page-about .ab-net__step h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .ab-net__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

/* ------------------------------------------------------------
   03 师傅资质
   ------------------------------------------------------------ */

.page-about .ab-creds__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
  align-items: start;
}

.page-about .ab-creds__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .ab-cred {
  position: relative;
  padding: clamp(18px, 2.2vw, 26px) clamp(18px, 2.2vw, 26px) clamp(18px, 2.2vw, 24px);
  background: var(--ab-card-bg);
  border-left: 6px solid var(--ink);
  box-shadow: 0 2px 0 rgba(30, 26, 22, .18);
  transition: transform .26s var(--ease), border-color .26s var(--ease), box-shadow .26s var(--ease);
}

.page-about .ab-cred:hover,
.page-about .ab-cred:focus-visible {
  transform: translate(-3px, -3px);
  border-left-color: var(--cyan);
  box-shadow: var(--shadow-blue);
  outline: none;
}

.page-about .ab-cred__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--slate);
}

.page-about .ab-cred__title {
  margin: 8px 0 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .ab-cred__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #3C3630;
}

.page-about .ab-cred__more {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
  opacity: 0;
  transition: max-height .34s var(--ease), opacity .28s var(--ease), margin-top .3s var(--ease);
}

.page-about .ab-cred:hover .ab-cred__more,
.page-about .ab-cred:focus-visible .ab-cred__more,
.page-about .ab-cred:focus-within .ab-cred__more {
  max-height: 140px;
  margin-top: 10px;
  opacity: 1;
}

.page-about .ab-creds__figure {
  margin: 0;
  border: var(--ab-line-cream);
  background: var(--ink);
  box-shadow: var(--shadow-brut);
}

.page-about .ab-creds__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .ab-creds__caption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--silver);
  background: var(--ink-deep);
  border-top: 1px solid rgba(199, 208, 219, .18);
}

/* ------------------------------------------------------------
   04 发展历程
   ------------------------------------------------------------ */

.page-about .ab-tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--ink-soft) 52%, var(--amber) 100%);
}

.page-about .ab-tl__item {
  position: relative;
  padding: 0 0 clamp(26px, 3.4vw, 42px) clamp(48px, 7vw, 78px);
}

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

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: 8.5px;
  top: 8px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--cyan);
  border: 3px solid var(--ink-deep);
  box-shadow: 0 0 0 4px rgba(0, 229, 255, .16);
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}

.page-about .ab-tl__item:hover::before {
  background: var(--amber);
  box-shadow: 0 0 0 7px rgba(255, 138, 61, .20);
}

.page-about .ab-tl__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-about .ab-tl__title {
  margin: 8px 0 8px;
  font-size: clamp(19px, 2.2vw, 25px);
  font-weight: 800;
  color: var(--cream);
}

.page-about .ab-tl__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}

/* ------------------------------------------------------------
   05 团队与协作
   ------------------------------------------------------------ */

.page-about .ab-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
  align-items: start;
}

.page-about .ab-team__figure {
  margin: 0;
  border: var(--ab-line-cream);
  background: var(--ink);
  box-shadow: var(--shadow-brut);
}

.page-about .ab-team__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .ab-team__caption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--silver);
  background: var(--ink-deep);
  border-top: 1px solid rgba(199, 208, 219, .18);
}

.page-about .ab-team__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .ab-team__card {
  padding: clamp(16px, 2vw, 22px);
  background: var(--ab-card-bg);
  border: 1px solid rgba(30, 26, 22, .16);
  border-top: 4px solid var(--amber);
  transition: transform .24s var(--ease), box-shadow .24s var(--ease);
}

.page-about .ab-team__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

.page-about .ab-team__card-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .ab-team__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #3C3630;
}

.page-about .ab-team__stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: clamp(30px, 4vw, 52px) 0 0;
  padding: 0;
  border-top: var(--ab-line-cream);
  border-bottom: var(--ab-line-cream);
}

.page-about .ab-team__stat {
  padding: clamp(18px, 2.4vw, 28px) clamp(12px, 1.6vw, 20px);
  border-right: 1px solid rgba(30, 26, 22, .14);
  border-bottom: 1px solid rgba(30, 26, 22, .14);
}

.page-about .ab-team__stat .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--ink);
}

.page-about .ab-team__stat .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--slate);
}

/* ------------------------------------------------------------
   06 合作生态与荣誉
   ------------------------------------------------------------ */

.page-about .ab-eco__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .ab-eco__panel {
  padding: clamp(20px, 2.8vw, 32px);
  background: rgba(255, 253, 248, .92);
  border: 1px solid rgba(30, 26, 22, .16);
  border-radius: 3px;
}

.page-about .ab-eco__panel--dark {
  background: linear-gradient(158deg, var(--ink) 0%, var(--ink-deep) 100%);
  border-color: rgba(0, 229, 255, .28);
  color: var(--cream);
  box-shadow: var(--shadow-blue);
}

.page-about .ab-eco__panel-title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .ab-eco__panel--dark .ab-eco__panel-title {
  color: var(--cyan);
}

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

.page-about .ab-eco__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(30, 26, 22, .18);
  font-size: 15px;
  line-height: 1.7;
  color: #37312A;
}

.page-about .ab-eco__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-eco__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--red);
}

.page-about .ab-eco__honors {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-eco__honor {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid rgba(199, 208, 219, .24);
  background: rgba(0, 229, 255, .05);
}

.page-about .ab-eco__honor p {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .ab-eco__note {
  margin: 0;
  padding-top: 18px;
  border-top: 1px dashed rgba(199, 208, 219, .26);
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver);
}

/* ------------------------------------------------------------
   CTA
   ------------------------------------------------------------ */

.page-about .ab-block--cta {
  background:
    radial-gradient(720px 380px at 78% 0%, rgba(0, 229, 255, .18), transparent 62%),
    linear-gradient(160deg, var(--ink-deep) 0%, #04101F 100%);
  color: var(--cream);
}

.page-about .ab-cta__box {
  padding: clamp(26px, 4vw, 52px);
  border: 2px solid rgba(0, 229, 255, .30);
  box-shadow: var(--ab-cyan-glow);
  background: rgba(6, 21, 43, .40);
}

.page-about .ab-cta__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-about .ab-cta__title {
  margin: 0;
  font-size: clamp(25px, 3.4vw, 44px);
  font-weight: 800;
  line-height: 1.16;
  color: var(--cream);
}

.page-about .ab-cta__lead {
  max-width: 62ch;
  margin: 18px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--silver);
}

.page-about .ab-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
}

.page-about .ab-cta__link {
  font-size: 14.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .22s var(--ease), color .22s var(--ease);
}

.page-about .ab-cta__link:hover,
.page-about .ab-cta__link:focus-visible {
  color: var(--cream);
  border-bottom-color: var(--cyan);
}

/* ------------------------------------------------------------
   响应式
   ------------------------------------------------------------ */

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.02fr .98fr;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr);
    align-items: start;
  }

  .page-about .ab-origin__drop {
    grid-column: 1 / -1;
  }

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

  .page-about .ab-net__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-about .ab-creds__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-about .ab-team__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: stretch;
  }

  .page-about .ab-eco__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }
}

@media (min-width: 1080px) {
  .page-about .ab-tl {
    padding-left: clamp(0px, 3vw, 40px);
  }

  .page-about .ab-creds__figure {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-cred,
  .page-about .ab-team__card,
  .page-about .ab-tl__item::before,
  .page-about .ab-cred__more {
    transition: none;
  }

  .page-about .ab-cred:hover,
  .page-about .ab-cred:focus-visible,
  .page-about .ab-team__card:hover {
    transform: none;
  }
}