.page-about {
  --about-gold: #C9A96E;
  --about-gold-light: #E8D5A3;
  --about-red: #8B0000;
  --about-red-dark: #660000;
  --about-bg: #1A1A1A;
  --about-text: #F5F0E6;
  --about-text-muted: #a09880;
  --about-border: rgba(201, 169, 110, 0.25);
  --about-radius: 0;
  color: var(--about-text);
  background-color: var(--about-bg);
  font-family: 'Georgia', 'Times New Roman', serif;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== 容器 ===== */
.page-about .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 面包屑 ===== */
.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Arial', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--about-text-muted);
  margin-bottom: 32px;
  padding-top: 24px;
}

.page-about .about-breadcrumb-link {
  color: var(--about-gold);
  text-decoration: none;
  transition: color 0.2s;
}

.page-about .about-breadcrumb-link:hover {
  color: var(--about-gold-light);
}

.page-about .about-breadcrumb-sep {
  color: var(--about-text-muted);
}

.page-about .about-breadcrumb-current {
  color: var(--about-text);
}

/* ===== 章节头 ===== */
.page-about .about-section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 40px;
  border-bottom: 2px solid var(--about-border);
  padding-bottom: 16px;
}

.page-about .about-section-number {
  font-family: 'Courier New', monospace;
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--about-red);
  line-height: 1;
}

.page-about .about-section-heading {
  font-family: 'Arial Black', 'Impact', sans-serif;
  font-weight: 900;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--about-text);
  font-size: 1.75rem;
  margin: 0;
}

/* ===== HERO ===== */
.page-about .about-hero {
  position: relative;
  padding: 48px 0 64px;
  background: linear-gradient(180deg, #111 0%, #1A1A1A 60%);
  overflow: hidden;
}

.page-about .about-hero-grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.06'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  opacity: 0.4;
}

.page-about .about-hero-layout {
  display: flex;
  flex-direction: column;
  gap: 40px;
  position: relative;
  z-index: 1;
}

.page-about .about-hero-label {
  font-family: 'Arial', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--about-gold);
  margin: 0 0 12px;
}

.page-about .about-hero-title {
  font-family: 'Arial Black', 'Impact', sans-serif;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--about-text);
  font-size: 3.2rem;
  line-height: 1.1;
  margin: 0 0 8px;
  text-shadow: 4px 4px 0 rgba(139, 0, 0, 0.4);
}

.page-about .about-hero-subtitle {
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 1.1rem;
  color: var(--about-gold);
  margin: 0 0 20px;
  font-style: italic;
}

.page-about .about-hero-desc {
  font-size: 1rem;
  color: var(--about-text-muted);
  max-width: 560px;
  margin: 0;
  line-height: 1.7;
}

.page-about .about-hero-emblem {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.page-about .about-hero-img {
  width: 200px;
  height: auto;
  aspect-ratio: 1/1;
  object-fit: cover;
  border: 2px solid var(--about-border);
  filter: grayscale(0.4) contrast(1.1);
  position: relative;
  z-index: 1;
}

.page-about .about-hero-emblem-ring {
  position: absolute;
  width: 240px;
  height: 240px;
  border: 1px solid rgba(201, 169, 110, 0.15);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: about-pulse-ring 4s ease-in-out infinite;
}

@keyframes about-pulse-ring {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
  50% { transform: translate(-50%, -50%) scale(1.05); opacity: 0.3; }
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  padding: 64px 0;
  background-color: #151515;
}

.page-about .about-story-grid {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.page-about .about-story-text {
  flex: 1;
}

.page-about .about-story-paragraph {
  font-size: 1rem;
  color: var(--about-text-muted);
  margin: 0 0 20px;
  line-height: 1.8;
}

.page-about .about-story-paragraph:last-of-type {
  margin-bottom: 28px;
}

.page-about .about-story-meta {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.page-about .about-story-meta-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-about .about-story-meta-num {
  font-family: 'Courier New', monospace;
  font-size: 2rem;
  font-weight: bold;
  color: var(--about-red);
  line-height: 1.2;
}

.page-about .about-story-meta-lbl {
  font-family: 'Arial', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--about-gold);
}

.page-about .about-story-visual {
  flex-shrink: 0;
}

.page-about .about-story-img {
  width: 100%;
  height: auto;
  max-width: 400px;
  aspect-ratio: 5/7;
  object-fit: cover;
  border: 1px solid var(--about-border);
  filter: grayscale(0.5) contrast(1.05);
}

.page-about .about-story-img-caption {
  font-family: 'Arial', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--about-text-muted);
  margin-top: 8px;
  font-style: italic;
}

/* ===== 时间线 ===== */
.page-about .about-milestones {
  padding: 64px 0;
  background-color: #1A1A1A;
}

.page-about .about-timeline {
  position: relative;
  padding-left: 32px;
}

.page-about .about-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--about-red), var(--about-gold), var(--about-red));
  opacity: 0.5;
}

.page-about .about-timeline-track {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.page-about .about-timeline-item {
  position: relative;
  padding: 20px 0 20px 24px;
  transition: opacity 0.3s;
}

.page-about .about-timeline-dot {
  position: absolute;
  left: -26px;
  top: 28px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--about-bg);
  border: 2px solid var(--about-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  z-index: 2;
}

.page-about .about-timeline-dot:hover,
.page-about .about-timeline-dot:focus-visible {
  transform: scale(1.15);
  border-color: var(--about-gold-light);
  box-shadow: 0 0 16px rgba(201, 169, 110, 0.3);
  outline: none;
}

.page-about .about-timeline-year {
  font-family: 'Courier New', monospace;
  font-size: 0.65rem;
  font-weight: bold;
  color: var(--about-gold);
  line-height: 1;
}

.page-about .about-timeline-card {
  background: rgba(21, 21, 21, 0.8);
  border: 1px solid var(--about-border);
  padding: 20px;
  transition: border-color 0.3s, transform 0.3s;
  cursor: default;
}

.page-about .about-timeline-card:hover {
  border-color: var(--about-gold);
  transform: translateX(4px);
}

.page-about .about-timeline-card-inner {
  position: relative;
}

.page-about .about-timeline-card-title {
  font-family: 'Arial Black', 'Impact', sans-serif;
  font-weight: 900;
  font-size: 1.1rem;
  text-transform: uppercase;
  color: var(--about-text);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.page-about .about-timeline-card-text {
  font-size: 0.9rem;
  color: var(--about-text-muted);
  margin: 0;
  line-height: 1.6;
}

/* ===== 核心数据 ===== */
.page-about .about-stats {
  padding: 64px 0;
  background-color: #151515;
}

.page-about .about-stats-intro {
  font-size: 0.95rem;
  color: var(--about-text-muted);
  margin: -24px 0 36px;
  max-width: 640px;
  line-height: 1.7;
}

.page-about .about-stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-stats-card {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--about-border);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s, background 0.3s;
}

.page-about .about-stats-card:hover {
  border-color: var(--about-gold);
  background: rgba(201, 169, 110, 0.06);
}

.page-about .about-stats-card-num {
  font-family: 'Courier New', monospace;
  font-size: 2.8rem;
  font-weight: bold;
  color: var(--about-red);
  line-height: 1.1;
  margin-bottom: 4px;
}

.page-about .about-stats-card-lbl {
  font-family: 'Arial', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--about-gold);
  margin-bottom: 8px;
}

.page-about .about-stats-card-desc {
  font-size: 0.85rem;
  color: var(--about-text-muted);
  line-height: 1.5;
}

/* ===== 服务承诺 ===== */
.page-about .about-commit {
  padding: 64px 0;
  background-color: #1A1A1A;
}

.page-about .about-commit-layout {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.page-about .about-commit-content {
  flex: 1;
}

.page-about .about-commit-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(201, 169, 110, 0.1);
  transition: padding-left 0.3s;
}

.page-about .about-commit-item:hover {
  padding-left: 8px;
}

.page-about .about-commit-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}

.page-about .about-commit-item-title {
  font-family: 'Arial Black', 'Impact', sans-serif;
  font-weight: 900;
  font-size: 1rem;
  text-transform: uppercase;
  color: var(--about-text);
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.page-about .about-commit-item-text {
  font-size: 0.9rem;
  color: var(--about-text-muted);
  margin: 0;
  line-height: 1.6;
}

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

.page-about .about-commit-link {
  font-family: 'Arial', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--about-gold);
  text-decoration: none;
  border-bottom: 1px solid var(--about-gold);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.page-about .about-commit-link:hover {
  color: var(--about-gold-light);
  border-color: var(--about-gold-light);
}

.page-about .about-commit-visual {
  flex-shrink: 0;
}

.page-about .about-commit-img {
  width: 100%;
  height: auto;
  aspect-ratio: 8/5;
  object-fit: cover;
  border: 1px solid var(--about-border);
  filter: grayscale(0.3) contrast(1.1);
}

.page-about .about-commit-img-caption {
  font-family: 'Arial', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--about-text-muted);
  margin-top: 8px;
  font-style: italic;
}

/* ===== 底部CTA ===== */
.page-about .about-cta {
  padding: 64px 0 80px;
  background: linear-gradient(180deg, #1A1A1A 0%, #111 100%);
  border-top: 1px solid var(--about-border);
}

.page-about .about-cta-inner {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.page-about .about-cta-label {
  font-family: 'Arial Black', 'Impact', sans-serif;
  font-weight: 900;
  font-size: 1.6rem;
  text-transform: uppercase;
  color: var(--about-text);
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  text-shadow: 2px 2px 0 rgba(139, 0, 0, 0.3);
}

.page-about .about-cta-text {
  font-size: 1rem;
  color: var(--about-text-muted);
  margin: 0 0 32px;
  line-height: 1.7;
}

.page-about .about-cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-about .about-cta-btn {
  font-family: 'Arial', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 36px;
  text-decoration: none;
  border: 2px solid var(--about-gold);
  color: var(--about-gold);
  background: transparent;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
  display: inline-block;
}

.page-about .about-cta-btn:hover {
  background: var(--about-gold);
  color: #1A1A1A;
  border-color: var(--about-gold);
}

.page-about .about-cta-btn--alt {
  border-color: var(--about-border);
  color: var(--about-text-muted);
}

.page-about .about-cta-btn--alt:hover {
  border-color: var(--about-text);
  color: var(--about-text);
  background: transparent;
}

/* ============================================ */
/* 移动端优先 —— 桌面增强 */
/* ============================================ */
@media (min-width: 768px) {
  .page-about .container {
    padding: 0 40px;
  }

  .page-about .about-section-heading {
    font-size: 2.2rem;
  }

  .page-about .about-hero {
    padding: 56px 0 80px;
  }

  .page-about .about-hero-layout {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-about .about-hero-text {
    flex: 1;
    max-width: 600px;
  }

  .page-about .about-hero-title {
    font-size: 4.5rem;
  }

  .page-about .about-hero-subtitle {
    font-size: 1.3rem;
  }

  .page-about .about-hero-desc {
    font-size: 1.05rem;
  }

  .page-about .about-hero-img {
    width: 280px;
  }

  .page-about .about-hero-emblem-ring {
    width: 340px;
    height: 340px;
  }

  .page-about .about-story-grid {
    flex-direction: row;
    align-items: flex-start;
  }

  .page-about .about-story-visual {
    flex: 0 0 320px;
  }

  .page-about .about-story-img {
    max-width: 100%;
  }

  .page-about .about-timeline {
    padding-left: 40px;
  }

  .page-about .about-timeline::before {
    left: 19px;
  }

  .page-about .about-timeline-dot {
    left: -32px;
    width: 40px;
    height: 40px;
  }

  .page-about .about-timeline-year {
    font-size: 0.75rem;
  }

  .page-about .about-timeline-item {
    padding: 24px 0 24px 32px;
  }

  .page-about .about-timeline-card {
    padding: 24px;
    max-width: 520px;
  }

  .page-about .about-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-about .about-stats-card {
    padding: 36px 28px;
  }

  .page-about .about-stats-card-num {
    font-size: 3.2rem;
  }

  .page-about .about-commit-layout {
    flex-direction: row;
    align-items: flex-start;
  }

  .page-about .about-commit-content {
    flex: 1;
  }

  .page-about .about-commit-visual {
    flex: 0 0 380px;
  }

  .page-about .about-cta-label {
    font-size: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-about .container {
    padding: 0 60px;
  }

  .page-about .about-hero-title {
    font-size: 5.5rem;
  }

  .page-about .about-hero-img {
    width: 340px;
  }

  .page-about .about-hero-emblem-ring {
    width: 420px;
    height: 420px;
  }

  .page-about .about-stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .page-about .about-commit-visual {
    flex: 0 0 440px;
  }

  .page-about .about-timeline-card {
    max-width: 600px;
  }
}