/* =============================================================================
   集团品牌页（lists_single_brand.htm）
   依赖：style.css :root 与 .container
   ============================================================================= */

.page-group-brand {
  --gb-gold: #0d6edc;
  --gb-gold-hover: #0b5ec4;
}

.page-group-brand .gb-main {
  padding-top: 0;
}

/* -----------------------------------------------------------------------------
   Hero：全幅背景图 + 遮罩（保证白字可读）
   ----------------------------------------------------------------------------- */
.gb-hero {
  position: relative;
  color: #fff;
}

.gb-hero-banner {
  position: relative;
  height: 500px;
  overflow: hidden;
  background: #0a1610;
}

.gb-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.gb-hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    168deg,
    rgba(26, 61, 46, 0.82) 0%,
    rgba(15, 36, 24, 0.78) 38%,
    rgba(10, 22, 16, 0.82) 72%,
    rgba(5, 8, 7, 0.88) 100%
  );
  pointer-events: none;
}

.gb-hero-inner {
  position: relative;
  z-index: 1;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  max-width: min(760px, 100%);
  padding: clamp(72px, 12vw, 120px) 0 clamp(40px, 6vw, 56px);
}

.gb-breadcrumb {
  background: var(--zg-gray-100);
  border-bottom: 1px solid var(--zg-border);
}

.gb-breadcrumb-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 12px 0 13px;
  font-size: 13px;
  color: var(--zg-text-muted);
}

.gb-bc-link {
  color: var(--zg-text-secondary);
  transition: color 0.2s;
}

.gb-bc-link:hover {
  color: var(--zg-blue);
}

.gb-bc-sep {
  color: #b0b6bf;
}

.gb-bc-current {
  color: var(--zg-text);
  font-weight: 600;
}

.gb-hero-title {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.8vw, 46px);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-shadow: 0 2px 28px rgba(0, 0, 0, 0.35);
}

.gb-hero-lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.9);
  max-width: 52em;
}

/* -----------------------------------------------------------------------------
   主内容区：浅灰底 + 卡片叠放
   ----------------------------------------------------------------------------- */
.gb-page-bg {
  background: linear-gradient(180deg, #e8ecf1 0%, #e2e7ee 40%, #dfe5ec 100%);
  padding: clamp(28px, 5vw, 48px) 0 clamp(56px, 8vw, 88px);
}

.gb-stack {
  display: flex;
  flex-direction: column;
  gap: clamp(22px, 3.5vw, 32px);
}

.gb-card {
  margin: 0;
  padding: clamp(22px, 3.2vw, 36px) clamp(20px, 3vw, 40px);
  background: var(--zg-white);
  border-radius: var(--zg-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: var(--zg-shadow-card);
}

.gb-card-title {
  margin: 0 0 clamp(18px, 2.5vw, 26px);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--zg-border);
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 800;
  color: var(--zg-text);
  line-height: 1.35;
}

.gb-card-title--center {
  text-align: center;
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 12px;
}

.gb-card--mech .gb-card-title--center {
  margin-bottom: 10px;
}

.gb-card-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.gb-deflist {
  margin: 0;
}

.gb-def-row {
  margin: 0 0 20px;
}

.gb-def-row:last-of-type {
  margin-bottom: 0;
}

.gb-def-row dt {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gb-gold);
  text-transform: none;
}

.gb-def-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--zg-text-secondary);
}

.gb-def-row dd strong {
  color: var(--zg-text);
  font-weight: 700;
}

.gb-card-footnote {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--zg-border);
  font-size: 13px;
  line-height: 1.75;
  color: var(--zg-text-muted);
}

.gb-text-link {
  color: var(--zg-blue);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.gb-text-link:hover {
  color: var(--zg-blue-hover);
}

.gb-figure {
  margin: 0;
  border-radius: var(--zg-radius-md);
  overflow: hidden;
  background: var(--zg-gray-100);
  border: 1px solid var(--zg-border);
}

.gb-figure--wide {
  margin-top: 4px;
}

.gb-figure-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.gb-figure-cap {
  padding: 10px 14px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--zg-text-muted);
  background: var(--zg-gray-50);
  border-top: 1px solid var(--zg-border);
}

.gb-prose {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--zg-text-secondary);
}

.gb-prose--lead {
  margin-bottom: clamp(16px, 2.5vw, 22px);
}

.gb-prose--lead strong {
  color: var(--zg-text);
}

.gb-prose--center {
  text-align: center;
  max-width: 42em;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: clamp(22px, 3vw, 30px);
}

.gb-bullet-list {
  margin: clamp(8px, 1.5vw, 14px) 0 0;
  padding: 0 0 0 1.25em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--zg-text-secondary);
}

.gb-bullet-list li {
  margin-bottom: 10px;
}

.gb-bullet-list li:last-child {
  margin-bottom: 0;
}

/* 三机制盒子 */
.gb-mech-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 20px);
  margin-bottom: clamp(26px, 4vw, 36px);
}

.gb-mech-box {
  margin: 0;
  padding: clamp(18px, 2.4vw, 24px);
  background: var(--zg-gray-100);
  border: 1px solid var(--zg-border);
  border-radius: var(--zg-radius-md);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.gb-mech-box:hover {
  border-color: #c5d4e8;
  box-shadow: 0 6px 22px rgba(15, 35, 70, 0.06);
}

.gb-mech-label {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--zg-blue);
}

.gb-mech-title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 800;
  color: var(--zg-text);
}

.gb-mech-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #5c6370;
}

/* CTA */
.gb-cta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px 14px;
}

.gb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--zg-radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.gb-btn:active {
  transform: scale(0.98);
}

.gb-btn--primary {
  background: var(--zg-blue);
  color: var(--zg-white);
  border-color: var(--zg-blue);
  box-shadow: 0 4px 14px rgba(13, 110, 220, 0.22);
}

.gb-btn--primary:hover {
  background: var(--zg-blue-hover);
  border-color: var(--zg-blue-hover);
  color: var(--zg-white);
}

.gb-btn--outline {
  background: var(--zg-white);
  color: var(--zg-text);
  border-color: var(--zg-border);
}

.gb-btn--outline:hover {
  border-color: var(--zg-blue);
  color: var(--zg-blue);
  background: var(--zg-blue-soft);
}

/* -----------------------------------------------------------------------------
   移动端
   ----------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .gb-card-split {
    grid-template-columns: 1fr;
  }

  .gb-card-col--media {
    order: -1;
  }

  .gb-mech-grid {
    grid-template-columns: 1fr;
  }

  .gb-cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .gb-btn {
    width: 100%;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 600px) {
  .gb-hero-inner {
    padding-top: 64px;
    padding-bottom: 28px;
    min-height: 500px;
  }

  .gb-hero-banner {
    height: 500px;
  }

  .gb-breadcrumb {
    font-size: 12px;
  }

  .gb-card {
    padding: 20px 16px;
  }

  .gb-def-row dt {
    font-size: 12px;
  }
}

@media (min-width: 901px) and (max-width: 1024px) {
  .gb-mech-grid {
    gap: 12px;
  }

  .gb-mech-title {
    font-size: 16px;
  }
}