/* ===== 品牌介绍页 · page-about ===== */
.page-about {
  --ab-line: rgba(10, 28, 61, .12);
  --ab-line-inv: rgba(255, 255, 255, .16);
  background: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}

/* --- 首屏 --- */
.page-about .about-hero {
  position: relative;
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(232, 178, 60, .26), rgba(232, 178, 60, 0) 58%),
    radial-gradient(80% 80% at 4% 100%, rgba(200, 32, 43, .2), rgba(200, 32, 43, 0) 62%),
    linear-gradient(158deg, var(--navy-900) 0%, var(--navy-800) 46%, var(--navy-700) 100%);
  color: #fff;
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(3rem, 7vw, 5rem);
  border-bottom-left-radius: clamp(28px, 6vw, 52px);
  border-bottom-right-radius: clamp(28px, 6vw, 52px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(90px, 20vw, 240px);
  height: 7px;
  background: linear-gradient(90deg, var(--gold-500), var(--red-600));
  border-bottom-left-radius: var(--r-pill);
}

.page-about .about-hero .crumbs {
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
}

.page-about .about-hero .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.page-about .about-hero .crumbs li {
  display: flex;
  align-items: center;
  gap: .4rem;
  color: rgba(255, 255, 255, .55);
}

.page-about .about-hero .crumbs li + li::before {
  content: "›";
  color: var(--gold-500);
}

.page-about .about-hero .crumbs a {
  color: rgba(255, 255, 255, .78);
  text-decoration: none;
}

.page-about .about-hero .crumbs a:hover,
.page-about .about-hero .crumbs a:focus-visible {
  color: var(--gold-400);
}

.page-about .about-hero .crumbs [aria-current="page"] {
  color: #fff;
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-hero-copy .eyebrow {
  color: var(--gold-400);
  margin: 0 0 .85rem;
}

.page-about .about-hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -.035em;
  font-weight: 900;
}

.page-about .about-hero .lede {
  margin: 0 0 1.75rem;
  max-width: 46ch;
  color: rgba(255, 255, 255, .82);
  font-size: clamp(1rem, 1.6vw, 1.14rem);
  line-height: 1.78;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

/* 速览卡 */
.page-about .about-fact-card {
  position: relative;
  z-index: 2;
  background: #fff;
  color: var(--ink);
  border-radius: var(--r-xl);
  padding: clamp(1.2rem, 3vw, 1.6rem);
  box-shadow: 0 36px 66px -34px rgba(0, 0, 0, .6);
}

.page-about .fact-card-title {
  display: inline-block;
  margin: 0 0 1rem;
  padding-bottom: .6rem;
  border-bottom: 2px solid var(--gold-500);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.page-about .fact-list {
  margin: 0;
}

.page-about .fact-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.25rem;
  padding: .58rem 0;
  border-bottom: 1px dashed var(--ab-line);
}

.page-about .fact-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .fact-row dt,
.page-about .fact-row dd {
  margin: 0;
}

.page-about .fact-k {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--ink-soft);
  white-space: nowrap;
}

.page-about .fact-v {
  font-weight: 800;
  font-size: .92rem;
  letter-spacing: -.01em;
  text-align: right;
}

.page-about .fact-v--mono {
  font-family: var(--mono);
  font-weight: 600;
  font-size: .78rem;
  letter-spacing: 0;
}

/* 首屏配图 */
.page-about .about-hero-figure {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  position: relative;
  background: linear-gradient(160deg, var(--navy-700), var(--navy-600));
  box-shadow: 0 42px 74px -42px rgba(0, 0, 0, .72);
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* --- 通用区块 --- */
.page-about .about-section {
  padding: clamp(3rem, 7vw, 5.5rem) 0 0;
}

.page-about .sec-head {
  max-width: 62ch;
  margin: 0 0 clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-section .eyebrow {
  color: var(--red-600);
  margin: 0 0 .7rem;
}

.page-about .about-section .section-title {
  margin: 0 0 .9rem;
  letter-spacing: -.03em;
}

.page-about .sec-head .lede {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

/* --- 三件事 --- */
.page-about .pillar-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .pillar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: clamp(.9rem, 3vw, 2.5rem);
  padding: clamp(1.4rem, 3.5vw, 2.1rem) 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .pillar:last-child {
  border-bottom: 1px solid var(--ab-line);
}

.page-about .pillar-num {
  font-family: var(--mono);
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--sand-500);
  padding-top: .12rem;
}

.page-about .pillar-body h3 {
  margin: 0 0 .55rem;
  font-size: clamp(1.12rem, 2.3vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -.02em;
}

.page-about .pillar-body p {
  margin: 0;
  max-width: 66ch;
  color: var(--ink-soft);
  line-height: 1.82;
}

/* --- 新疆地域 --- */
.page-about .region-section {
  padding-top: clamp(2.75rem, 6.5vw, 5rem);
}

.page-about .region-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border-radius: clamp(24px, 5vw, 40px);
  background: var(--paper-2);
}

.page-about .region-figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: linear-gradient(155deg, var(--sand-500), var(--red-600));
}

.page-about .region-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.page-about .region-body .eyebrow {
  color: var(--sand-500);
  margin: 0 0 .7rem;
}

.page-about .region-body .section-title {
  margin: 0 0 1rem;
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  letter-spacing: -.03em;
}

.page-about .region-body p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  line-height: 1.82;
  max-width: 60ch;
}

.page-about .region-body p:last-of-type {
  margin-bottom: 1.4rem;
}

.page-about .region-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

/* --- 面板与版本 --- */
.page-about .panel-band {
  position: relative;
  overflow: hidden;
  border-radius: clamp(24px, 5vw, 40px);
  padding: clamp(1.6rem, 5vw, 3.25rem);
  color: #fff;
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(232, 178, 60, .22), rgba(232, 178, 60, 0) 56%),
    linear-gradient(150deg, var(--navy-900) 0%, var(--navy-700) 68%, var(--navy-800) 100%);
}

.page-about .panel-band::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: repeating-linear-gradient(115deg,
    var(--gold-500) 0 14px,
    var(--red-600) 14px 26px,
    var(--navy-600) 26px 40px);
}

.page-about .band-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-about .band-copy .eyebrow {
  color: var(--gold-400);
  margin: 0 0 .7rem;
}

.page-about .band-copy .section-title {
  margin: 0 0 .9rem;
  font-size: clamp(1.4rem, 3.4vw, 2.15rem);
  letter-spacing: -.03em;
}

.page-about .band-lede {
  margin: 0 0 1.5rem;
  max-width: 54ch;
  color: rgba(255, 255, 255, .8);
  line-height: 1.8;
}

.page-about .band-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .85rem;
}

.page-about .band-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: .9rem;
  padding: .9rem 1rem;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--ab-line-inv);
}

.page-about .band-tag {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--gold-400);
  white-space: nowrap;
  padding-top: .18rem;
}

.page-about .band-item p {
  margin: 0;
  font-size: .91rem;
  line-height: 1.72;
  color: rgba(255, 255, 255, .85);
}

.page-about .band-figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: linear-gradient(160deg, var(--navy-600), var(--navy-800));
  border: 1px solid var(--ab-line-inv);
}

.page-about .band-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* --- 下一步 --- */
.page-about .about-next {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 0;
}

.page-about .next-board {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  padding: clamp(1.6rem, 4vw, 2.75rem);
  border-radius: clamp(24px, 5vw, 40px);
  border: 1px solid var(--ab-line);
  background: linear-gradient(180deg, #fff, var(--paper));
  box-shadow: var(--shadow-md);
}

.page-about .next-copy h2 {
  margin: 0 0 .55rem;
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  letter-spacing: -.025em;
}

.page-about .next-copy p {
  margin: 0;
  max-width: 54ch;
  color: var(--ink-soft);
  line-height: 1.8;
}

.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

.page-about .next-note {
  margin: 1.1rem 0 0;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .next-note a {
  color: var(--navy-700);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .next-note a:hover,
.page-about .next-note a:focus-visible {
  color: var(--red-600);
}

/* --- 响应式 --- */
@media (min-width: 760px) {
  .page-about .next-board {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 920px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .82fr);
    align-items: end;
    gap: clamp(2rem, 3.5vw, 3.25rem);
  }

  .page-about .about-fact-card {
    transform: translateY(2rem);
  }

  .page-about .about-hero-figure {
    margin-top: -.75rem;
  }

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

  .page-about .band-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }
}

@media (max-width: 560px) {
  .page-about .about-hero-figure img {
    aspect-ratio: 3 / 2;
  }

  .page-about .pillar {
    grid-template-columns: minmax(0, 1fr);
    gap: .5rem;
  }

  .page-about .pillar-num {
    font-size: 1rem;
  }

  .page-about .band-item {
    grid-template-columns: minmax(0, 1fr);
    gap: .45rem;
  }

  .page-about .fact-v {
    font-size: .86rem;
  }

  .page-about .next-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-fact-card {
    transform: none;
  }
}