/* ========== page-about: 品牌介绍 ========== */
.page-about {
  --page-about-cream: #F4EBE0;
  --page-about-deep: #0B1F3A;
  --page-about-mid: #123D66;
  --page-about-gold: #F5C518;
  --page-about-accent: #FF6B35;
  --page-about-mint: #2A9D8F;
  --page-about-muted: rgba(244, 235, 224, 0.72);
  --page-about-soft-border: rgba(11, 31, 58, 0.12);

  background-color: var(--page-about-deep);
}

.page-about .section {
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6.5rem) clamp(1.25rem, 5vw, 5rem);
}

.page-about .section-kicker {
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--page-about-accent);
  margin-bottom: 0.75rem;
}

.page-about .section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.16;
  margin-bottom: 0.9rem;
}

.page-about .section-excerpt {
  font-size: 1rem;
  line-height: 1.8;
  max-width: 640px;
}

/* ===== Hero 首屏 ===== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  padding: 3rem clamp(1.25rem, 5vw, 5rem) 4.5rem;
  background:
    radial-gradient(ellipse at 85% 12%, rgba(245, 197, 24, 0.14), transparent 34%),
    radial-gradient(ellipse at 8% 88%, rgba(42, 157, 143, 0.1), transparent 30%),
    linear-gradient(150deg, var(--page-about-deep) 0%, var(--page-about-mid) 68%, #0A1C33 100%);
}

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

.page-about .about-hero .section-kicker {
  display: inline-block;
  color: var(--page-about-gold);
  border-bottom: 1px solid rgba(217, 217, 217, 0.2);
  padding-bottom: 0.7rem;
  margin-bottom: 1.4rem;
}

.page-about .about-hero h1 {
  font-size: clamp(2.3rem, 7vw, 4.2rem);
  font-weight: 900;
  line-height: 1.08;
  color: var(--page-about-cream);
  letter-spacing: -0.02em;
}

.page-about .title-accent {
  color: var(--page-about-gold);
  position: relative;
}

.page-about .about-hero .lead {
  max-width: 520px;
  margin-top: 1.3rem;
  color: var(--page-about-muted);
  font-size: 1.02rem;
  line-height: 1.85;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.page-about .about-hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem 2.6rem;
  margin-top: 2.5rem;
  padding-top: 1.6rem;
  border-top: 1px solid rgba(217, 217, 217, 0.18);
}

.page-about .hero-metric {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-about .hero-metric-value {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--page-about-cream);
  line-height: 1.2;
}

.page-about .hero-metric-label {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: rgba(244, 235, 224, 0.62);
  text-transform: uppercase;
}

.page-about .about-hero-image {
  position: relative;
  margin: 0 auto;
  width: 100%;
  max-width: 460px;
}

.page-about .about-hero-image::before {
  content: "";
  position: absolute;
  inset: -1rem 1rem 1rem -1rem;
  border: 1px solid rgba(245, 197, 24, 0.4);
  border-radius: 4px;
  z-index: 0;
  pointer-events: none;
}

.page-about .hero-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid rgba(217, 217, 217, 0.22);
  box-shadow: 0 24px 56px rgba(7, 20, 38, 0.48);
  object-fit: cover;
}

/* ===== 我们是谁 ===== */
.page-about .about-identity {
  background: var(--page-about-cream);
  color: var(--page-about-deep);
}

.page-about .identity-bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .identity-bento .surface-card {
  background: #FFFDF6;
  border: 1px solid var(--page-about-soft-border);
  box-shadow: 0 16px 36px rgba(11, 31, 58, 0.08);
  border-radius: 4px;
  padding: 1.6rem;
}

.page-about .identity-visual .lead {
  font-size: 1.05rem;
  line-height: 1.8;
}

.page-about .identity-rule {
  width: 52px;
  height: 3px;
  background: linear-gradient(90deg, var(--page-about-gold), var(--page-about-accent));
  margin: 1.4rem 0;
}

.page-about .identity-meta {
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(18, 61, 102, 0.7);
  border-top: 1px solid rgba(11, 31, 58, 0.1);
  padding-top: 1rem;
  margin-top: 1.2rem;
}

.page-about .identity-story h3 {
  font-size: 1.25rem;
  font-weight: 900;
  margin-bottom: 0.75rem;
}

.page-about .identity-story p,
.page-about .identity-visual p {
  line-height: 1.85;
  font-size: 0.96rem;
  margin-bottom: 0.9rem;
}

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

.page-about .identity-stat-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-top: 3px solid var(--page-about-gold);
}

.page-about .identity-stat-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--page-about-mid);
  letter-spacing: -0.02em;
}

.page-about .identity-stat-card p {
  font-size: 0.92rem;
  line-height: 1.6;
  color: rgba(11, 31, 58, 0.72);
  margin: 0;
}

/* ===== 发展历程 ===== */
.page-about .about-journey {
  background:
    radial-gradient(circle at 12% 18%, rgba(245, 197, 24, 0.12), transparent 26%),
    linear-gradient(180deg, #0B1F3A 0%, #123D66 55%, #0B1F3A 100%);
  color: var(--page-about-cream);
}

.page-about .journey-header {
  margin-bottom: 3rem;
}

.page-about .journey-header .section-kicker {
  color: var(--page-about-gold);
}

.page-about .journey-header .section-excerpt {
  color: var(--page-about-muted);
}

.page-about .journey-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0.5rem 0 1rem;
}

.page-about .journey-list::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--page-about-gold), rgba(42, 157, 143, 0.5));
  opacity: 0.6;
}

.page-about .journey-item {
  position: relative;
  padding: 0 0 2.5rem 2.6rem;
  margin: 0;
}

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

.page-about .journey-dot {
  position: absolute;
  left: 1px;
  top: 0.6rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--page-about-gold);
  background: var(--page-about-deep);
  box-shadow: 0 0 0 4px rgba(245, 197, 24, 0.12);
}

.page-about .journey-dot::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--page-about-gold);
}

.page-about .journey-card {
  background: rgba(244, 235, 224, 0.96);
  color: var(--page-about-deep);
  border: 1px solid rgba(217, 217, 217, 0.3);
  border-top: 3px solid var(--page-about-gold);
  border-radius: 4px;
  padding: 1.6rem;
  box-shadow: 0 16px 36px rgba(7, 20, 38, 0.28);
}

.page-about .journey-phase {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--page-about-accent);
  margin-bottom: 0.65rem;
}

.page-about .journey-card h3 {
  font-size: 1.25rem;
  font-weight: 900;
  margin-bottom: 0.6rem;
}

.page-about .journey-card p {
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(11, 31, 58, 0.76);
}

.page-about .journey-media {
  padding: 0.5rem 0 2.5rem;
}

.page-about .journey-figure {
  display: block;
  margin: 0;
}

.page-about .journey-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 500px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid rgba(217, 217, 217, 0.22);
  box-shadow: 0 18px 48px rgba(7, 20, 38, 0.46);
}

.page-about .journey-figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--page-about-muted);
}

/* ===== 服务生态 ===== */
.page-about .about-ecosystem {
  background: var(--page-about-cream);
  color: var(--page-about-deep);
}

.page-about .ecosystem-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.page-about .about-ecosystem .section-head {
  margin-bottom: 2rem;
}

.page-about .about-ecosystem .section-excerpt {
  color: rgba(11, 31, 58, 0.72);
}

.page-about .ecosystem-figure {
  display: block;
  margin: 0 0 2.5rem;
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid var(--page-about-soft-border);
  background: #FFFDF6;
}

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

.page-about .ecosystem-figure figcaption {
  padding: 0.8rem 1rem;
  font-size: 0.82rem;
  color: rgba(11, 31, 58, 0.62);
}

.page-about .ecosystem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

.page-about .ecosystem-feature {
  display: flex;
  flex-direction: column;
  background: #FFFDF6;
  border: 1px solid var(--page-about-soft-border);
  border-top: 3px solid var(--page-about-gold);
  border-radius: 4px;
  padding: 1.7rem 1.5rem;
  box-shadow: 0 14px 30px rgba(11, 31, 58, 0.08);
}

.page-about .ecosystem-index {
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  color: var(--page-about-accent);
  margin-bottom: 0.8rem;
}

.page-about .ecosystem-feature h3 {
  font-size: 1.3rem;
  font-weight: 900;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.page-about .ecosystem-feature p {
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(11, 31, 58, 0.72);
  flex: 1;
}

.page-about .ecosystem-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.2rem;
  color: var(--page-about-mid);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.page-about .ecosystem-link:hover,
.page-about .ecosystem-link:focus-visible {
  color: var(--page-about-accent);
  border-color: var(--page-about-accent);
}

.page-about .ecosystem-update {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1.25rem 1.4rem;
  border: 1px solid rgba(11, 31, 58, 0.12);
  border-left: 3px solid var(--page-about-mint);
  background: rgba(42, 157, 143, 0.06);
  border-radius: 4px;
}

.page-about .ecosystem-update p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(11, 31, 58, 0.78);
  margin: 0;
}

/* ===== 品牌承诺 ===== */
.page-about .about-promise {
  background:
    linear-gradient(135deg, rgba(245, 197, 24, 0.08), transparent 30%),
    linear-gradient(150deg, #071426 0%, #0B1F3A 48%, #123D66 100%);
  color: var(--page-about-cream);
}

.page-about .promise-panel {
  max-width: 1200px;
  margin: 0 auto;
}

.page-about .promise-panel .section-kicker {
  color: var(--page-about-gold);
}

.page-about .promise-panel .section-excerpt {
  color: var(--page-about-muted);
  max-width: 620px;
}

.page-about .promise-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  list-style: none;
  margin: 2rem 0;
  padding: 0;
}

.page-about .promise-item {
  background: rgba(244, 235, 224, 0.06);
  border: 1px solid rgba(217, 217, 217, 0.14);
  border-left: 3px solid var(--page-about-gold);
  border-radius: 4px;
  padding: 1.6rem;
  transition: background var(--transition);
}

.page-about .promise-item:hover,
.page-about .promise-item:focus-within {
  background: rgba(244, 235, 224, 0.1);
}

.page-about .promise-index {
  display: block;
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  color: rgba(245, 197, 24, 0.85);
  margin-bottom: 0.7rem;
}

.page-about .promise-item h3 {
  font-size: 1.15rem;
  font-weight: 900;
  margin-bottom: 0.6rem;
}

.page-about .promise-item p {
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(244, 235, 224, 0.74);
}

.page-about .promise-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 980px) {
  .page-about .about-hero {
    min-height: 88vh;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 420px;
    align-items: center;
    gap: 5rem;
    padding: 4rem 6vw;
  }

  .page-about .about-hero h1 {
    font-size: clamp(2.6rem, 5vw, 4.4rem);
  }

  .page-about .about-hero-image {
    max-width: none;
  }

  .page-about .hero-img {
    height: 68vh;
    max-height: 780px;
    object-fit: cover;
  }

  .page-about .identity-bento {
    grid-template-columns: 1fr 1.1fr 1fr;
    gap: 1.4rem;
  }

  .page-about .identity-bento .surface-card {
    padding: 2rem;
  }

  .page-about .about-journey .journey-list::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .journey-item {
    width: 50%;
    padding: 0 4rem 4rem 0;
  }

  .page-about .journey-item.is-right {
    margin-left: 50%;
    padding: 0 0 4rem 4rem;
  }

  .page-about .journey-dot {
    left: auto;
    right: -11px;
    top: 2rem;
  }

  .page-about .journey-item.is-right .journey-dot {
    right: auto;
    left: -11px;
  }

  .page-about .journey-media {
    width: 100%;
    padding: 1rem 0 4rem;
  }

  .page-about .journey-figure {
    max-width: 740px;
    margin: 0 auto;
  }

  .page-about .ecosystem-grid {
    grid-template-columns: repeat(12, 1fr);
  }

  .page-about .ecosystem-feature:nth-child(1),
  .page-about .ecosystem-feature:nth-child(4) {
    grid-column: span 5;
  }

  .page-about .ecosystem-feature:nth-child(2),
  .page-about .ecosystem-feature:nth-child(3) {
    grid-column: span 7;
  }

  .page-about .ecosystem-feature {
    padding: 2rem;
  }

  .page-about .promise-list {
    grid-template-columns: 1fr 1fr;
    gap: 1.4rem;
  }
}