/* ===== page-about 品牌介绍页专属样式 ===== */
.page-about {
  --about-glow-opacity: 0.25;
  --about-card-radius: 4px;
  --about-frame-padding: 2rem;
  --about-band-height: 4px;

  display: flex;
  flex-direction: column;
  gap: 0;
  color: var(--color-white, #F1FAEE);
  background: var(--color-dark, #0B0C10);
  font-family: var(--font-body, 'Inter', system-ui, sans-serif);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  font-size: 0.8rem;
  color: var(--color-gray, #A8B2C1);
  background: transparent;
  max-width: var(--site-max, 1280px);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}
.page-about .breadcrumb a {
  color: var(--color-light-blue, #457B9D);
  text-decoration: none;
  transition: color 0.2s;
}
.page-about .breadcrumb a:hover {
  color: var(--color-red, #E63946);
}
.page-about .breadcrumb .sep {
  color: var(--color-gray, #A8B2C1);
  user-select: none;
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--color-white, #F1FAEE);
  font-weight: 500;
}

/* ---------- 首屏框景 ---------- */
.page-about .hero-frame {
  position: relative;
  width: 100%;
  padding: var(--about-frame-padding);
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 85vh;
}
.page-about .hero-window {
  position: relative;
  width: 100%;
  max-width: 820px;
  padding: 2.5rem 2rem 2rem;
  border: 2px solid var(--color-red, #E63946);
  background: radial-gradient(ellipse at 30% 40%, rgba(230,57,70,0.08) 0%, transparent 70%),
              radial-gradient(ellipse at 70% 60%, rgba(69,123,157,0.08) 0%, transparent 70%);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
/* 刻度线 - 顶部 */
.page-about .top-marks {
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-red, #E63946) 0px,
    var(--color-red, #E63946) 2px,
    transparent 2px,
    transparent 16px
  );
  pointer-events: none;
}
/* 刻度线 - 左侧 */
.page-about .left-marks {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -2px;
  width: 4px;
  background: repeating-linear-gradient(
    180deg,
    var(--color-red, #E63946) 0px,
    var(--color-red, #E63946) 2px,
    transparent 2px,
    transparent 16px
  );
  pointer-events: none;
}
/* 额外边框装饰（视觉增强） */
.page-about .window-border {
  position: absolute;
  pointer-events: none;
  opacity: 0.3;
}
.page-about .top-border {
  top: -8px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-light-blue, #457B9D), transparent);
}
.page-about .left-border {
  left: -8px;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--color-light-blue, #457B9D), transparent);
}
.page-about .hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.page-about .hero-badge {
  font-size: 2rem;
  color: var(--color-red, #E63946);
  line-height: 1;
  letter-spacing: 0.15em;
}
.page-about .hero-title {
  font-family: var(--font-heading, 'Inter', 'Segoe UI', sans-serif);
  font-weight: 800;
  font-style: italic;
  font-size: clamp(3rem, 10vw, 5rem);
  line-height: 1.05;
  color: var(--color-white, #F1FAEE);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0;
  text-shadow: 0 0 40px rgba(230,57,70,0.3);
}
.page-about .hero-subtitle {
  font-family: var(--font-body, 'Inter', system-ui, sans-serif);
  font-weight: 400;
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--color-gray, #A8B2C1);
  letter-spacing: 0.3em;
  margin: 0 0 1rem 0;
}
.page-about .hero-figure {
  margin: 1.5rem 0 0;
  width: 100%;
  max-width: 360px;
}
.page-about .hero-logo {
  display: block;
  width: 100%;
  height: auto;
  max-width: 360px;
  object-fit: contain;
  filter: drop-shadow(0 0 30px rgba(230,57,70,0.15));
}

/* ---------- 色带分隔 ---------- */
.page-about .section-band {
  width: 100%;
  height: var(--about-band-height);
  background: linear-gradient(90deg, var(--color-red, #E63946), var(--color-light-blue, #457B9D));
  opacity: 0.6;
  margin: 1rem 0;
}

/* ---------- 通用章节样式 ---------- */
.page-about .container {
  max-width: var(--site-max, 1280px);
  margin: 0 auto;
  padding: 1.5rem;
  box-sizing: border-box;
  width: 100%;
}
.page-about .section-number {
  display: inline-block;
  font-family: var(--font-data, 'JetBrains Mono', monospace);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-red, #E63946);
  letter-spacing: 0.15em;
  margin-bottom: 0.25rem;
  border-bottom: 2px solid var(--color-red, #E63946);
  padding-bottom: 0.25rem;
}
.page-about .section-heading {
  font-family: var(--font-heading, 'Inter', 'Segoe UI', sans-serif);
  font-weight: 800;
  font-style: italic;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.1;
  color: var(--color-white, #F1FAEE);
  margin: 0.5rem 0 1.5rem 0;
}

/* ---------- 品牌故事 ---------- */
.page-about .story-section {
  padding: 2rem 0;
}
.page-about .story-layout {
  max-width: 780px;
}
.page-about .story-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-gray, #A8B2C1);
  margin: 0;
  border-left: 3px solid var(--color-red, #E63946);
  padding-left: 1.5rem;
}

/* ---------- 核心价值 ---------- */
.page-about .values-section {
  padding: 2rem 0;
}
.page-about .values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1rem;
}
.page-about .value-card {
  position: relative;
  background: rgba(29,53,87,0.25);
  border: 1px solid rgba(69,123,157,0.2);
  border-radius: var(--about-card-radius);
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 0.35s cubic-bezier(0.25,0.46,0.45,0.94),
              box-shadow 0.35s ease;
  cursor: default;
  overflow: hidden;
}
.page-about .value-card:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 32px rgba(230,57,70,0.12), 0 0 0 1px rgba(230,57,70,0.2);
}
.page-about .card-visual {
  position: relative;
  width: 100%;
  height: 140px;
  overflow: hidden;
  border-radius: 2px;
  background: var(--color-blue, #1D3557);
}
.page-about .card-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 40%, rgba(230,57,70,0.15), transparent 70%);
  pointer-events: none;
  z-index: 1;
}
.page-about .card-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
  transition: opacity 0.4s;
}
.page-about .value-card:hover .card-img {
  opacity: 0.9;
}
.page-about .card-title {
  font-family: var(--font-heading, 'Inter', 'Segoe UI', sans-serif);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-white, #F1FAEE);
  margin: 0.25rem 0 0 0;
}
.page-about .card-summary {
  font-size: 0.95rem;
  color: var(--color-gray, #A8B2C1);
  margin: 0;
  line-height: 1.5;
}
.page-about .card-detail {
  font-size: 0.88rem;
  color: var(--color-light-blue, #457B9D);
  margin: 0;
  line-height: 1.6;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease;
  opacity: 0;
}
.page-about .value-card:hover .card-detail {
  max-height: 200px;
  opacity: 1;
}

/* ---------- 数据来源 ---------- */
.page-about .data-section {
  padding: 2rem 0;
}
.page-about .data-figure {
  margin: 1.5rem 0;
  width: 100%;
  border: 1px solid rgba(69,123,157,0.15);
  border-radius: var(--about-card-radius);
  overflow: hidden;
  background: var(--color-blue, #1D3557);
}
.page-about .data-map {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-height: 480px;
  opacity: 0.8;
  transition: opacity 0.4s;
}
.page-about .data-figure:hover .data-map {
  opacity: 1;
}
.page-about .data-caption {
  font-size: 0.8rem;
  color: var(--color-gray, #A8B2C1);
  padding: 0.75rem 1rem;
  text-align: center;
  letter-spacing: 0.05em;
  border-top: 1px solid rgba(69,123,157,0.1);
}
.page-about .data-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-gray, #A8B2C1);
  max-width: 760px;
  margin: 1rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid rgba(69,123,157,0.1);
}

/* ---------- 收尾：信任与粒子 ---------- */
.page-about .outro-section {
  padding: 3rem 0 4rem;
  position: relative;
}
.page-about .outro-particle {
  position: relative;
  width: 100%;
  height: 120px;
  margin-bottom: 2rem;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 50%, rgba(230,57,70,0.03), transparent);
}
.page-about .particle-dot {
  position: absolute;
  left: calc(var(--x) * 100%);
  top: calc(var(--y) * 100%);
  width: var(--s, 6px);
  height: var(--s, 6px);
  border-radius: 50%;
  background: var(--color-red, #E63946);
  opacity: 0.25;
  animation: particle-float 4s ease-in-out infinite alternate;
  animation-delay: calc(var(--x) * 2s);
}
@keyframes particle-float {
  0% { transform: translate(0, 0) scale(1); opacity: 0.15; }
  100% { transform: translate(8px, -12px) scale(1.2); opacity: 0.4; }
}
.page-about .trust-statement {
  margin: 0 0 1.5rem 0;
  padding: 1.5rem 2rem;
  border-left: 4px solid var(--color-yellow, #F4A261);
  background: rgba(244,162,97,0.06);
  font-size: 1.05rem;
  color: var(--color-gray, #A8B2C1);
  max-width: 700px;
}
.page-about .trust-statement p {
  margin: 0;
  font-style: italic;
}
.page-about .outro-cta {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}
.page-about .outro-cta > p {
  font-size: 0.95rem;
  color: var(--color-gray, #A8B2C1);
  margin: 0;
  letter-spacing: 0.05em;
}
.page-about .outro-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.8rem;
  font-family: var(--font-body, 'Inter', system-ui, sans-serif);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-white, #F1FAEE);
  background: var(--color-red, #E63946);
  border: 2px solid var(--color-red, #E63946);
  border-radius: 2px;
  text-decoration: none;
  transition: background 0.25s, transform 0.2s;
  letter-spacing: 0.04em;
}
.page-about .btn:hover {
  background: #d42d3a;
  transform: translateY(-1px);
}
.page-about .btn-outline {
  background: transparent;
  border-color: var(--color-light-blue, #457B9D);
  color: var(--color-light-blue, #457B9D);
}
.page-about .btn-outline:hover {
  background: rgba(69,123,157,0.12);
  border-color: var(--color-light-blue, #457B9D);
}

/* ---------- 桌面端媒体查询 ---------- */
@media (min-width: 768px) {
  .page-about .hero-frame {
    min-height: 75vh;
    padding: 3rem;
  }
  .page-about .hero-window {
    padding: 3.5rem 3rem 2.5rem;
  }
  .page-about .hero-title {
    font-size: clamp(4rem, 8vw, 6rem);
  }
  .page-about .hero-figure {
    max-width: 420px;
  }
  .page-about .hero-logo {
    max-width: 420px;
  }
  .page-about .values-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
  }
  .page-about .value-card {
    padding: 2rem 1.5rem;
  }
  .page-about .value-card:hover {
    transform: scale(1.04);
  }
  .page-about .card-visual {
    height: 180px;
  }
  .page-about .card-detail {
    max-height: 0;
  }
  .page-about .value-card:hover .card-detail {
    max-height: 180px;
  }
  .page-about .data-map {
    max-height: 520px;
  }
  .page-about .outro-section {
    padding: 4rem 0 5rem;
  }
  .page-about .outro-particle {
    height: 160px;
  }
  .page-about .particle-dot {
    animation-duration: 5s;
  }
  .page-about .trust-statement {
    padding: 2rem 3rem;
    font-size: 1.1rem;
  }
}

@media (min-width: 1024px) {
  .page-about .hero-window {
    padding: 4rem 4rem 3rem;
  }
  .page-about .hero-title {
    font-size: 6.5rem;
  }
  .page-about .values-grid {
    gap: 2.5rem;
  }
  .page-about .value-card {
    padding: 2.5rem 2rem;
  }
  .page-about .story-layout {
    max-width: 840px;
  }
  .page-about .data-text {
    max-width: 840px;
  }
}

.page-about {
  --s: 1rem;
  --x: inherit;
  --y: inherit;
}