/* ===== 页面级品牌介绍 about ===== */
.page-about {
  --about-gold: rgba(201, 162, 39, 0.16);
  --about-gold-strong: rgba(201, 162, 39, 0.28);
  --about-wine: rgba(122, 46, 28, 0.24);
  --about-teal: rgba(62, 142, 126, 0.45);
  --about-sand-line: rgba(237, 230, 216, 0.08);
  position: relative;
  background: var(--c-pitch);
  color: var(--c-sand);
  overflow-x: clip;
}

.page-about a {
  color: var(--c-sand);
  text-decoration: none;
}

.page-about .btn--gold,
.page-about .btn--ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--f-body);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: background var(--ease), color var(--ease), border-color var(--ease), transform var(--ease);
}

.page-about .btn--gold {
  background: var(--c-gold);
  color: var(--c-pitch);
  border: 1px solid var(--c-gold);
}

.page-about .btn--gold:hover,
.page-about .btn--gold:focus-visible {
  background: transparent;
  color: var(--c-gold);
}

.page-about .btn--ghost {
  background: transparent;
  color: var(--c-sand);
  border: 1px solid var(--c-sand-dark);
}

.page-about .btn--ghost:hover,
.page-about .btn--ghost:focus-visible {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

/* 章节标题公用装饰 */
.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}

.page-about .about-section-num {
  font-family: var(--f-data);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--c-gold);
  opacity: 0.85;
  letter-spacing: -0.05em;
}

.page-about .about-rotate-note {
  writing-mode: vertical-rl;
  font-family: var(--f-data);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-sand-dark);
  padding-top: 6px;
}

/* ===== 首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: clamp(40px, 7vw, 80px) 0 clamp(48px, 8vw, 96px);
  background:
    radial-gradient(circle at 88% 18%, var(--about-gold-strong), transparent 34%),
    linear-gradient(120deg, var(--c-pitch) 0%, var(--c-turf) 62%, var(--c-mesh) 100%);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-sand-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-sand-line) 1px, transparent 1px);
  background-size: 42px 42px;
  transform: perspective(500px) rotateX(52deg) scale(1.7);
  transform-origin: center bottom;
  opacity: 0.4;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 40px;
}

.page-about .about-hero__content {
  max-width: 640px;
}

.page-about .about-hero__eyebrow {
  margin-top: 28px;
}

.page-about .about-hero h1 {
  font-family: var(--f-headline);
  font-size: clamp(2.6rem, 8vw, 5rem);
  line-height: 1.08;
  letter-spacing: 0.02em;
  margin: 10px 0 6px;
  color: var(--c-sand);
  text-transform: uppercase;
}

.page-about .about-hero__lead {
  font-size: clamp(1.1rem, 2.6vw, 1.5rem);
  font-weight: 700;
  color: var(--c-gold);
  margin-bottom: 20px;
  letter-spacing: 0.06em;
}

.page-about .about-hero__desc {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-sand-dark);
  max-width: 54ch;
}

.page-about .about-hero__anchor {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-hero__art {
  position: relative;
  min-height: 220px;
}

.page-about .about-hero__field {
  position: absolute;
  right: -6%;
  top: 14%;
  width: 78%;
  max-width: 520px;
  border: 1px solid var(--about-gold-strong);
  background: rgba(15, 36, 26, 0.5);
  clip-path: polygon(12% 0, 100% 6%, 88% 100%, 0 94%);
  padding: 18px;
  transform: rotate(-2deg);
}

.page-about .about-hero__lines {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-hero__snow {
  position: absolute;
  left: 2%;
  bottom: 4%;
  width: 92px;
  height: 92px;
  opacity: 0.9;
  transform: rotate(8deg);
}

.page-about .about-hero__est {
  position: absolute;
  right: 4%;
  bottom: 2%;
  font-family: var(--f-data);
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  color: var(--c-sand-dark);
  border-bottom: 1px solid var(--c-gold);
  padding-bottom: 4px;
}

.page-about .about-hero__speedlines {
  position: absolute;
  top: 10%;
  right: -4%;
  width: 58%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
  transform: rotate(-12deg);
  opacity: 0.35;
  pointer-events: none;
}

.page-about .about-hero__speedlines::after {
  content: "";
  position: absolute;
  top: 14px;
  left: 18%;
  width: 38%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--about-teal), transparent);
}

/* ===== 品牌起源 ===== */
.page-about .about-origin {
  position: relative;
  padding: clamp(56px, 9vw, 110px) 0;
  background:
    radial-gradient(circle at 10% 20%, var(--about-gold), transparent 32%),
    var(--c-pitch);
}

.page-about .about-origin__inner {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about .about-origin__media {
  position: relative;
  max-width: 400px;
}

.page-about .about-origin__imgwrap {
  clip-path: polygon(0 0, 88% 4%, 100% 22%, 92% 100%, 8% 96%, 0 74%);
  background: var(--c-turf);
  padding: 10px;
}

.page-about .about-origin__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 1 / 1;
  clip-path: polygon(0 0, 88% 3%, 100% 20%, 91% 100%, 8% 96%, 0 74%);
}

.page-about .about-origin__note {
  position: absolute;
  right: -26px;
  bottom: 22%;
  writing-mode: vertical-rl;
  font-family: var(--f-data);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  color: var(--c-sand-dark);
  border-right: 1px solid var(--c-gold);
  padding-right: 6px;
}

.page-about .about-origin__content p {
  line-height: 1.85;
  color: var(--c-sand-dark);
  margin: 0 0 16px;
  font-size: 0.98rem;
}

.page-about .about-origin__sig {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-top: 28px;
  border-top: 1px solid var(--about-gold-strong);
  padding-top: 18px;
}

.page-about .about-origin__sig-name {
  font-family: var(--f-headline);
  font-size: 1.3rem;
  color: var(--c-gold);
  letter-spacing: 0.1em;
}

.page-about .about-origin__sig-year {
  font-family: var(--f-data);
  font-size: 0.82rem;
  color: var(--c-sand-dark);
  letter-spacing: 0.06em;
}

/* ===== 发展历程时间线 ===== */
.page-about .about-timeline {
  position: relative;
  padding: clamp(56px, 9vw, 110px) 0;
  background:
    linear-gradient(180deg, var(--c-turf) 0%, var(--c-pitch) 40%),
    var(--c-pitch);
}

.page-about .about-timeline__heading {
  display: grid;
  gap: 20px;
  margin-bottom: 44px;
}

.page-about .about-timeline__intro p {
  color: var(--c-sand-dark);
  line-height: 1.75;
  max-width: 52ch;
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 18px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold), var(--c-teal), transparent 90%);
  opacity: 0.6;
}

.page-about .timeline__item {
  position: relative;
  padding-left: 44px;
}

.page-about .timeline__marker {
  position: absolute;
  left: 0;
  top: 10px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 3px solid var(--c-gold);
  background: var(--c-pitch);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.page-about .timeline__marker span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-gold);
  opacity: 0.85;
}

.page-about .timeline__card {
  background: rgba(30, 61, 43, 0.6);
  border-left: 3px solid var(--c-gold);
  padding: 0 16px;
  transition: background var(--ease), border-color var(--ease);
}

.page-about .timeline__card:hover,
.page-about .timeline__card:focus-within {
  background: rgba(30, 61, 43, 0.95);
}

.page-about .timeline__season {
  font-family: var(--f-headline);
  font-size: 1.02rem;
  letter-spacing: 0.08em;
  color: var(--c-gold);
  padding: 14px 0 2px;
  margin: 0;
}

.page-about .timeline__details {
  padding-bottom: 4px;
}

.page-about .timeline__details summary {
  cursor: pointer;
  list-style: none;
  padding: 10px 0 12px;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--c-sand);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: color var(--ease);
}

.page-about .timeline__details summary::-webkit-details-marker {
  display: none;
}

.page-about .timeline__details summary::after {
  content: "+";
  font-family: var(--f-data);
  font-size: 1.2rem;
  color: var(--c-gold);
  flex: 0 0 auto;
  line-height: 1;
  transition: transform var(--ease);
}

.page-about .timeline__details[open] summary::after {
  content: "−";
}

.page-about .timeline__details[open] summary {
  color: var(--c-gold);
}

.page-about .timeline__details p {
  margin: 0 0 14px;
  color: var(--c-sand-dark);
  line-height: 1.75;
  font-size: 0.93rem;
}

/* ===== 数据规模 ===== */
.page-about .about-scale {
  position: relative;
  padding: clamp(56px, 9vw, 110px) 0;
  background:
    radial-gradient(circle at 88% 10%, var(--about-wine), transparent 30%),
    var(--c-pitch);
}

.page-about .about-scale__intro {
  max-width: 52ch;
  margin-bottom: 38px;
}

.page-about .about-scale__intro p {
  color: var(--c-sand-dark);
  line-height: 1.75;
}

.page-about .about-scale__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 48px;
}

.page-about .about-scale__panel {
  background: var(--c-turf);
  border: 1px solid var(--about-gold-strong);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-scale__panel--main {
  border-color: var(--c-gold);
  background: linear-gradient(145deg, var(--c-pitch-light), var(--c-turf));
}

.page-about .about-scale__label {
  font-family: var(--f-data);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-sand-dark);
}

.page-about .about-scale__value {
  font-family: var(--f-data);
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  line-height: 1;
  color: var(--c-gold);
}

.page-about .about-scale__panel p {
  margin: 0;
  color: var(--c-sand-dark);
  font-size: 0.85rem;
  line-height: 1.6;
}

.page-about .about-scale__figure {
  display: grid;
  gap: 28px;
}

.page-about .about-scale__figure-inner {
  margin: 0;
  background: var(--c-turf);
  border: 1px solid var(--about-sand-line);
  padding: 10px;
  clip-path: polygon(0 0, 100% 2%, 96% 100%, 2% 98%);
}

.page-about .about-scale__figure-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  clip-path: polygon(0 0, 100% 1%, 96% 100%, 2% 98%);
}

.page-about .about-scale__figure-inner figcaption {
  font-size: 0.8rem;
  color: var(--c-sand-dark);
  padding: 10px 4px 4px;
  text-align: right;
  font-family: var(--f-data);
  letter-spacing: 0.04em;
}

.page-about .about-scale__aside {
  background: var(--c-turf);
  border-right: 4px solid var(--c-gold);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

.page-about .about-scale__aside h3 {
  font-family: var(--f-headline);
  font-size: 1.35rem;
  color: var(--c-sand);
  margin: 0;
  letter-spacing: 0.04em;
}

.page-about .about-scale__aside p {
  color: var(--c-sand-dark);
  line-height: 1.7;
  margin: 0;
  font-size: 0.95rem;
}

/* ===== 专家专栏 ===== */
.page-about .about-experts {
  position: relative;
  padding: clamp(56px, 9vw, 110px) 0;
  background: linear-gradient(180deg, var(--c-pitch) 0%, var(--c-turf) 60%, var(--c-mesh) 100%);
}

.page-about .about-experts__grid {
  display: grid;
  gap: 40px;
}

.page-about .about-experts__content p {
  color: var(--c-sand-dark);
  line-height: 1.8;
  margin: 0 0 16px;
  font-size: 0.96rem;
}

.page-about .about-experts__list {
  list-style: none;
  margin: 22px 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-experts__list li {
  position: relative;
  padding-left: 26px;
  color: var(--c-sand);
  font-size: 0.95rem;
  line-height: 1.6;
}

.page-about .about-experts__list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--c-gold);
  font-size: 0.8rem;
}

.page-about .about-experts__visual {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-content: center;
  padding: 20px 0;
}

.page-about .about-experts__counter {
  background: var(--c-pitch-light);
  border: 1px solid var(--about-gold-strong);
  padding: 26px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
  clip-path: polygon(0 0, 88% 4%, 100% 18%, 96% 100%, 6% 96%);
}

.page-about .about-experts__counter--alt {
  background: var(--c-wine);
  border-color: rgba(237, 230, 216, 0.2);
  transform: translateY(20px);
}

.page-about .about-experts__counter-num {
  font-family: var(--f-data);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1;
  color: var(--c-gold);
}

.page-about .about-experts__counter--alt .about-experts__counter-num {
  color: var(--c-sand);
}

.page-about .about-experts__counter-label {
  font-size: 0.82rem;
  color: var(--c-sand-dark);
  letter-spacing: 0.1em;
}

.page-about .about-experts__snow {
  position: absolute;
  right: 0;
  top: -10px;
  width: 58px;
  height: 58px;
  opacity: 0.35;
  transform: rotate(12deg);
}

/* ===== 新疆本地化 ===== */
.page-about .about-local {
  position: relative;
  padding: clamp(56px, 9vw, 110px) 0 72px;
  background:
    linear-gradient(140deg, var(--c-mesh) 0%, var(--c-pitch) 42%, var(--c-turf) 100%);
}

.page-about .about-local__intro {
  max-width: 60ch;
  margin-bottom: 38px;
}

.page-about .about-local__intro p {
  color: var(--c-sand-dark);
  line-height: 1.75;
}

.page-about .about-local__theme {
  position: relative;
  border: 1px solid var(--about-gold-strong);
  background: var(--c-rock);
}

.page-about .about-local__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-about .about-local__theme-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--about-sand-line);
}

.page-about .about-local__theme-label {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--c-sand-dark);
  margin-right: auto;
  font-family: var(--f-data);
  text-transform: uppercase;
}

.page-about .about-local__theme-btn {
  cursor: pointer;
  padding: 6px 16px;
  font-size: 0.85rem;
  border: 1px solid var(--c-gold);
  color: var(--c-sand);
  transition: background var(--ease), color var(--ease);
}

.page-about .about-local__radio--sand:checked ~ .about-local__theme-bar label[for="texture-sand"],
.page-about .about-local__radio--grass:checked ~ .about-local__theme-bar label[for="texture-grass"] {
  background: var(--c-gold);
  color: var(--c-pitch);
  font-weight: 700;
}

.page-about .about-local__theme-stage {
  position: relative;
  padding: 30px 20px;
  color: var(--c-sand);
  transition: background var(--ease);
  background-color: #3a2b18;
  background-image:
    radial-gradient(ellipse at 18% 16%, rgba(201, 162, 39, 0.14), transparent 58%),
    radial-gradient(ellipse at 80% 68%, rgba(122, 46, 28, 0.2), transparent 48%),
    radial-gradient(ellipse at 52% 88%, rgba(237, 230, 216, 0.05), transparent 45%);
}

.page-about .about-local__radio--grass:checked ~ .about-local__theme-stage {
  background-color: var(--c-turf);
  background-image:
    repeating-linear-gradient(90deg, rgba(237, 230, 216, 0.04) 0 3px, transparent 3px 80px),
    linear-gradient(135deg, rgba(15, 36, 26, 0.35), transparent 65%);
}

.page-about .about-local__theme-stage::before {
  content: "✦ 天山雪莲 · 戈壁与球场交汇";
  display: block;
  font-family: var(--f-data);
  font-size: 0.74rem;
  color: var(--c-sand-dark);
  letter-spacing: 0.12em;
  margin-bottom: 26px;
  text-transform: uppercase;
}

.page-about .about-local__theme-content {
  display: grid;
  gap: 30px;
}

.page-about .about-local__text h3 {
  font-family: var(--f-headline);
  font-size: 1.4rem;
  color: var(--c-sand);
  margin: 0 0 14px;
  letter-spacing: 0.04em;
}

.page-about .about-local__text p {
  line-height: 1.8;
  color: var(--c-sand-dark);
  font-size: 0.95rem;
  margin: 0 0 14px;
}

.page-about .about-local__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 18px;
  border-top: 1px solid var(--about-gold-strong);
  padding-top: 16px;
}

.page-about .about-local__contact span {
  font-family: var(--f-data);
  font-size: 0.8rem;
  color: var(--c-gold);
  letter-spacing: 0.03em;
}

.page-about .about-local__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--about-gold-strong);
}

/* ===== 收束 CTA ===== */
.page-about .about-cta {
  position: relative;
  padding: 72px 0 84px;
  background:
    linear-gradient(120deg, rgba(201, 162, 39, 0.12), transparent 42%),
    var(--c-pitch);
  border-top: 1px solid var(--about-gold-strong);
  overflow: hidden;
}

.page-about .about-cta::after {
  content: "";
  position: absolute;
  bottom: -14px;
  right: -20px;
  width: 220px;
  height: 60px;
  background: linear-gradient(90deg, transparent, rgba(62, 142, 126, 0.25), transparent);
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-cta__text h2 {
  font-family: var(--f-headline);
  font-size: clamp(1.7rem, 4.6vw, 2.7rem);
  line-height: 1.2;
  color: var(--c-sand);
  margin: 12px 0 12px;
  letter-spacing: 0.03em;
}

.page-about .about-cta__text p {
  color: var(--c-sand-dark);
  line-height: 1.75;
  max-width: 48ch;
  margin: 0;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 响应式：平板及以上 ===== */
@media (min-width: 700px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 40px;
  }

  .page-about .about-hero__art {
    min-height: 300px;
  }

  .page-about .about-origin__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(36px, 7vw, 88px);
  }

  .page-about .about-scale__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

  .page-about .about-scale__figure {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: stretch;
  }

  .page-about .about-experts__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-experts__visual {
    padding-top: 28px;
  }

  .page-about .about-local__theme-content {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
    gap: 36px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 40px;
  }

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

/* ===== 响应式：桌面宽度 ===== */
@media (min-width: 1040px) {
  .page-about .about-timeline__heading {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    align-items: end;
    gap: 32px;
  }

  .page-about .timeline {
    padding-left: clamp(40px, 8vw, 120px);
    padding-right: clamp(0px, 6vw, 80px);
  }

  .page-about .timeline__item {
    padding-left: 56px;
  }

  .page-about .about-scale__panel {
    padding: 28px 22px;
  }
}

/* ===== 减少动效：保持内容可读 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero,
  .page-about .about-origin,
  .page-about .about-timeline,
  .page-about .about-scale,
  .page-about .about-experts,
  .page-about .about-local,
  .page-about .about-cta {
    transition: none;
  }
}