.page-about {
  --about-line: rgba(217, 195, 122, 0.38);
  --about-body-dim: rgba(245, 240, 230, 0.72);
  background-color: var(--c-ink);
}

/* ---------- 首屏 Hero ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 20px 0 64px;
  background:
    radial-gradient(ellipse 95% 75% at 78% 8%, var(--c-gold-deep) 0%, transparent 66%),
    linear-gradient(160deg, var(--c-ink) 0%, #0d0b06 100%);
}

.page-about .about-hero__diagonal {
  position: absolute;
  top: -12%;
  right: -48%;
  width: 88%;
  height: 78%;
  background: linear-gradient(120deg, transparent 18%, var(--c-gold-mid) 140%);
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.72;
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.page-about .about-hero__overline {
  letter-spacing: 0.22em;
}

.page-about .about-hero__content h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.2vw, 3.4rem);
  font-weight: 700;
  line-height: 1.12;
  margin: 14px 0 20px;
  color: var(--c-ivory);
}

.page-about .about-hero__accent {
  display: block;
  color: var(--c-gold-bright);
}

.page-about .about-hero__lead {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--about-body-dim);
  max-width: 56ch;
  margin: 0;
}

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

.page-about .about-hero__aside {
  padding: 24px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: rgba(26, 26, 26, 0.7);
  backdrop-filter: blur(10px);
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}

.page-about .about-hero__aside-title {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-gold-bright);
  margin: 0 0 16px;
}

.page-about .about-hero__aside-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 0 16px;
  padding: 0;
}

.page-about .about-hero__aside-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px dashed var(--about-line);
  padding-bottom: 8px;
}

.page-about .about-hero__aside-row dt {
  font-size: 0.9rem;
  color: rgba(245, 240, 230, 0.68);
}

.page-about .about-hero__aside-row dd {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-gold-bright);
  margin: 0;
}

.page-about .about-hero__aside-note {
  font-size: 0.8rem;
  line-height: 1.55;
  color: rgba(245, 240, 230, 0.58);
  margin: 0;
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  position: relative;
  overflow: hidden;
  padding: 72px 0;
}

.page-about .about-section .container {
  position: relative;
  z-index: 1;
}

.page-about .about-section::before {
  content: "";
  position: absolute;
  top: 18px;
  right: 4px;
  font-family: var(--font-display);
  font-size: 14rem;
  font-weight: 700;
  line-height: 0.8;
  color: rgba(176, 141, 58, 0.1);
  pointer-events: none;
  z-index: 0;
}

.page-about #origin::before {
  content: "01";
}

.page-about #values::before {
  content: "02";
  color: rgba(217, 195, 122, 0.12);
}

.page-about #milestones::before {
  content: "03";
  color: rgba(217, 195, 122, 0.12);
}

.page-about #recognition::before {
  content: "04";
  color: rgba(92, 69, 24, 0.08);
}

.page-about .about-chapter__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 36px;
}

.page-about .about-chapter__number {
  font-family: var(--font-display);
  font-size: 3.6rem;
  font-weight: 700;
  line-height: 0.9;
  color: var(--c-gold-bright);
  opacity: 0.5;
  letter-spacing: -0.04em;
}

.page-about .about-chapter__heading h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 4px 0 0;
  color: var(--c-gold-deep);
}

.page-about .section--dark .about-chapter__heading h2 {
  color: var(--c-gold);
}

.page-about .about-section--dark {
  background:
    radial-gradient(ellipse 70% 80% at 6% 18%, rgba(58, 45, 18, 0.56), transparent 62%),
    var(--c-ink);
  color: var(--c-ivory);
}

/* ---------- 01 品牌起源 ---------- */
.page-about .section--light {
  background: var(--c-ivory);
  color: #3b362c;
}

.page-about .about-origin {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-about .about-origin__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-ink);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.18);
}

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

.page-about .about-origin figcaption,
.page-about .about-milestones figcaption,
.page-about .about-recognition figcaption {
  padding: 10px 14px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.66);
  background: rgba(0, 0, 0, 0.32);
}

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

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 32px 24px;
  border-left: 1px solid rgba(176, 141, 58, 0.5);
}

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

.page-about .about-timeline__dot {
  position: absolute;
  left: -7px;
  top: 4px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(176, 141, 58, 0.18);
}

.page-about .about-timeline__year {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-gold-mid);
  border: 1px solid rgba(92, 69, 24, 0.32);
  padding: 2px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.page-about .about-timeline__body h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 6px;
  color: #2b2415;
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: #5a5345;
}

.page-about .about-origin__note {
  margin-top: 30px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: #5a5345;
  border-left: 3px solid var(--c-gold);
  padding: 6px 14px;
  background: rgba(176, 141, 58, 0.08);
}

.page-about .about-origin__note a,
.page-about .about-values__footnote a,
.page-about .about-recognition__note a {
  color: var(--c-gold-mid);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 02 核心价值观 ---------- */
.page-about .about-section--values {
  background:
    radial-gradient(ellipse 70% 80% at 8% 16%, rgba(58, 45, 18, 0.56), transparent 62%),
    var(--c-ink);
}

.page-about .about-values {
  display: grid;
  gap: 20px;
}

.page-about .about-values__card {
  padding: 28px 24px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: rgba(26, 26, 26, 0.72);
  backdrop-filter: blur(8px);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.page-about .about-values__card:hover {
  transform: translateY(-4px);
  border-color: var(--c-gold-bright);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.page-about .about-values__icon {
  color: var(--c-gold-bright);
  margin-bottom: 16px;
}

.page-about .about-values__card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--c-ivory);
  margin: 0 0 10px;
}

.page-about .about-values__card p {
  color: var(--about-body-dim);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

.page-about .about-values__footnote {
  margin: 28px auto 0;
  max-width: 660px;
  text-align: center;
  font-size: 0.9rem;
  color: rgba(245, 240, 230, 0.64);
}

/* ---------- 03 服务里程碑 ---------- */
.page-about .about-section--milestones {
  background:
    radial-gradient(ellipse 90% 65% at 85% 15%, rgba(58, 45, 18, 0.7), transparent 62%),
    linear-gradient(135deg, #0e0b04 0%, var(--c-gold-deep) 70%, #1c1508 100%);
  color: var(--c-ivory);
}

.page-about .about-section--milestones .about-chapter__heading h2 {
  color: var(--c-gold);
}

.page-about .about-milestones {
  display: grid;
  gap: 36px;
  align-items: center;
}

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

.page-about .about-milestones__item {
  display: flex;
  gap: 16px;
  padding: 20px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(217, 195, 122, 0.2);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.page-about .about-milestones__item:hover {
  border-color: var(--c-gold);
  background: rgba(217, 195, 122, 0.1);
  transform: translateX(4px);
}

.page-about .about-milestones__seq {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-gold-bright);
  flex: 0 0 auto;
}

.page-about .about-milestones__item h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-ivory);
  margin: 0 0 6px;
}

.page-about .about-milestones__item p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: rgba(245, 240, 230, 0.7);
  margin: 0;
}

.page-about .about-milestones__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

/* ---------- 04 用户认可 ---------- */
.page-about .about-recognition__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .about-recognition__stat {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(92, 69, 24, 0.28);
  padding: 22px 12px;
  text-align: center;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(6px);
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about .about-recognition__stat:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(58, 45, 18, 0.14);
}

.page-about .about-recognition__num {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--c-gold-mid);
  display: block;
  line-height: 1.2;
}

.page-about .about-recognition__label {
  font-size: 0.8rem;
  color: #5f584a;
  display: block;
  margin-top: 4px;
}

.page-about .about-recognition__lower {
  margin-top: 36px;
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-recognition__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-ink);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.15);
}

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

.page-about .about-recognition__honors h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--c-gold-mid);
  margin: 0 0 14px;
}

.page-about .about-recognition__honor-list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: grid;
  gap: 10px;
}

.page-about .about-recognition__honor-list li {
  position: relative;
  padding-left: 24px;
  color: #4a4438;
  font-size: 0.95rem;
  line-height: 1.55;
}

.page-about .about-recognition__honor-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 10px;
  border: 2px solid var(--c-gold);
  border-radius: 999px;
  box-sizing: border-box;
}

.page-about .about-recognition__note {
  font-size: 0.85rem;
  color: #6a6355;
  border-left: 3px solid var(--c-gold);
  padding-left: 12px;
  margin: 0;
}

/* ---------- CTA ---------- */
.page-about .about-cta {
  background:
    radial-gradient(ellipse 60% 80% at 80% 80%, rgba(58, 45, 18, 0.62), transparent 66%),
    var(--c-ink);
  padding: 72px 0;
  text-align: center;
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.2rem);
  color: var(--c-ivory);
  margin: 8px 0 12px;
}

.page-about .about-cta p {
  color: var(--about-body-dim);
  max-width: 44ch;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-about .about-cta__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

/* ---------- 返回顶部 ---------- */
.page-about [data-top] {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--c-gold);
  background: rgba(10, 10, 10, 0.85);
  color: var(--c-gold-bright);
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 99;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.page-about [data-top]:hover {
  background: var(--c-gold);
  color: var(--c-ink);
  transform: translateY(-3px);
}

/* ---------- 响应式：桌面端 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 32px 0 96px;
  }

  .page-about .about-hero__grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-hero__diagonal {
    top: -14%;
    right: -8%;
    width: 58%;
    height: 100%;
  }

  .page-about .about-hero__aside {
    justify-self: end;
    width: 100%;
  }

  .page-about .about-section {
    padding: 110px 0;
  }

  .page-about .about-chapter__head {
    gap: 20px;
    margin-bottom: 56px;
  }

  .page-about .about-chapter__number {
    font-size: 5.2rem;
  }

  .page-about .about-origin {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-origin__figure {
    position: sticky;
    top: 90px;
  }

  .page-about .about-values {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-milestones {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
  }

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

  .page-about .about-recognition__lower {
    grid-template-columns: 1fr 1fr;
    gap: 44px;
    align-items: center;
  }

  .page-about .about-cta {
    padding: 96px 0;
  }

  .page-about .about-section::before {
    font-size: 18rem;
    top: 24px;
    right: 8px;
  }
}