/**
 * cases-page.css — 客户故事中心布局（色值见 zc-design-system.css）
 */
:root {
  --case-primary: var(--zc-brand-light);
  --case-primary-dark: var(--zc-brand-dark);
  --case-primary-soft: var(--zc-brand-soft);
  --case-text: var(--zc-slate-900);
  --case-muted: var(--zc-slate-500);
  --case-border: var(--zc-border);
  --case-radius: var(--zc-radius);
  --case-shadow: var(--zc-shadow);
  --case-shadow-hover: var(--zc-shadow-lg);
  --case-bg: var(--zc-bg-alt);
}

/* Hero */
.case-hero {
  background: linear-gradient(135deg, #15803d 0%, #166534 100%);
  color: #fff;
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.case-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -8%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.case-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}
.case-hero__tag {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}
.case-hero__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 14px;
}
.case-hero__sub {
  font-size: 16px;
  line-height: 1.7;
  opacity: 0.92;
  margin: 0 0 24px;
}
.case-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.case-hero__actions .btn-primary {
  background: #fff;
  color: var(--zc-brand-dark, #14532d);
}
.case-hero__actions .btn-primary:hover {
  background: var(--zc-brand-soft, #f0fdf4);
}
.case-hero__actions .btn-secondary {
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
}
.case-hero__actions .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

/* 三层分工 */
.case-roles {
  padding: 48px 0;
  background: #fff;
  border-bottom: 1px solid var(--case-border);
}
.case-roles__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.case-role-card {
  padding: 22px 20px;
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  background: #fafafa;
  transition: all 0.25s ease;
}
.case-role-card--active {
  border-color: rgba(22, 163, 74, 0.45);
  background: var(--case-primary-soft);
  box-shadow: var(--case-shadow);
}
.case-role-card__icon {
  font-size: 26px;
  margin-bottom: 8px;
}
.case-role-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--case-text);
  margin: 0 0 6px;
}
.case-role-card p {
  font-size: 13px;
  color: var(--case-muted);
  line-height: 1.55;
  margin: 0 0 12px;
}
.case-role-card a {
  font-size: 13px;
  font-weight: 600;
  color: var(--case-primary);
  text-decoration: none;
}
.case-role-card a:hover {
  text-decoration: underline;
}

/* 统计条 */
.case-stats {
  padding: 40px 0;
  background: var(--case-primary-soft);
}
.case-stats__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.case-stats__item {
  text-align: center;
  padding: 18px 10px;
  background: #fff;
  border-radius: var(--case-radius);
  border: 1px solid var(--case-border);
}
.case-stats__num {
  font-size: 28px;
  font-weight: 800;
  color: var(--case-primary);
  line-height: 1.1;
}
.case-stats__lbl {
  font-size: 12px;
  color: var(--case-muted);
  margin-top: 6px;
}
.case-stats__note {
  text-align: center;
  font-size: 12px;
  color: var(--case-muted);
  margin-top: 16px;
}

/* 页内导航 */
.case-page-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--case-border);
  padding: 10px 0;
}
.case-page-nav__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.case-page-nav__link {
  display: inline-block;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--case-muted);
  text-decoration: none;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: all 0.2s;
}
.case-page-nav__link:hover,
.case-page-nav__link.is-active {
  color: var(--case-primary-dark);
  background: var(--case-primary-soft);
  border-color: rgba(22, 163, 74, 0.25);
}

/* 智能推荐 */
.case-match {
  padding: 32px 0;
  background: #fffbeb;
  border-bottom: 1px solid #fde68a;
}
.case-match__head {
  margin-bottom: 16px;
}
.case-match__head h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--case-text);
  margin: 0 0 4px;
}
.case-match__head p {
  font-size: 13px;
  color: var(--case-muted);
  margin: 0;
}

/* 筛选 */
.case-browse {
  padding: 40px 0 24px;
  background: #fff;
}
.case-browse__head {
  margin-bottom: 20px;
}
.case-browse__head h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--case-text);
  margin: 0 0 6px;
}
.case-browse__head p {
  font-size: 14px;
  color: var(--case-muted);
  margin: 0;
}
.case-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.case-filter-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--case-border);
  border-radius: 999px;
  background: #fff;
  color: var(--case-muted);
  cursor: pointer;
  transition: all 0.2s;
}
.case-filter-btn:hover {
  border-color: var(--case-primary);
  color: var(--case-primary);
}
.case-filter-btn.active {
  background: var(--case-primary);
  border-color: var(--case-primary);
  color: #fff;
}
.case-filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}
.case-filter-group__label {
  font-size: 12px;
  font-weight: 700;
  color: var(--case-muted);
  min-width: 48px;
}
.case-empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--case-muted);
  font-size: 14px;
}

/* 故事卡片 */
.case-stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  padding-bottom: 48px;
}
.case-story-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  background: #fff;
  overflow: hidden;
  transition: all 0.25s ease;
  border-left: 4px solid var(--case-industry-color, var(--case-primary));
}
.case-story-card:hover {
  box-shadow: var(--case-shadow-hover);
  transform: translateY(-3px);
}
.case-story-card__top {
  padding: 18px 18px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.case-story-card__badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  background: #f3f4f6;
  color: #4b5563;
}
.case-story-card__type {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--case-primary-soft);
  color: var(--case-primary-dark);
}
.case-story-card__body {
  padding: 12px 18px;
  flex: 1;
}
.case-story-card__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--case-text);
  line-height: 1.4;
  margin: 0 0 8px;
}
.case-story-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
  color: var(--case-muted);
  margin-bottom: 10px;
}
.case-story-card__kpis {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}
.case-story-card__kpi {
  font-size: 12px;
  color: #374151;
}
.case-story-card__kpi strong {
  color: var(--case-primary-dark);
}
.case-story-card__quote {
  font-size: 12px;
  color: var(--case-muted);
  font-style: italic;
  line-height: 1.5;
  border-left: 2px solid var(--case-border);
  padding-left: 10px;
  margin: 0;
}
.case-story-card__foot {
  padding: 14px 18px 18px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.case-story-card__foot .btn {
  font-size: 13px;
  padding: 8px 14px;
}

/* 样板带 */
.case-showcases {
  padding: 48px 0;
  background: var(--case-bg, #f9fafb);
  border-top: 1px solid var(--case-border);
}
.case-showcases__head {
  text-align: center;
  margin-bottom: 28px;
}
.case-showcases__head h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 6px;
}
.case-showcases__head p {
  font-size: 14px;
  color: var(--case-muted);
  margin: 0;
}
.case-showcases__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.case-showcase-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  text-decoration: none;
  color: inherit;
  transition: all 0.25s;
}
.case-showcase-card:hover {
  border-color: rgba(22, 163, 74, 0.4);
  box-shadow: var(--case-shadow-hover);
  transform: translateY(-2px);
}
.case-showcase-card__icon {
  font-size: 28px;
  margin-bottom: 8px;
}
.case-showcase-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--case-text);
}
.case-showcase-card p {
  font-size: 12px;
  color: var(--case-muted);
  line-height: 1.5;
  margin: 0 0 12px;
  flex: 1;
}
.case-showcase-card__links {
  display: flex;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
}
.case-showcase-card__links span {
  color: var(--case-primary);
}

/* 深度案例 */
.case-deep {
  padding: 48px 0;
  background: #fff;
}
.case-deep__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}
.case-deep-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  text-decoration: none;
  color: inherit;
  transition: all 0.25s;
  position: relative;
  overflow: hidden;
}
.case-deep-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--case-primary), var(--case-primary-dark));
}
.case-deep-card:hover {
  box-shadow: var(--case-shadow-hover);
  transform: translateY(-3px);
}
.case-deep-card__icon {
  font-size: 32px;
  margin-bottom: 10px;
}
.case-deep-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
}
.case-deep-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}
.case-deep-card__meta span {
  font-size: 11px;
  padding: 2px 8px;
  background: #f3f4f6;
  border-radius: 4px;
  color: #4b5563;
}
.case-deep-card p {
  font-size: 13px;
  color: var(--case-muted);
  line-height: 1.55;
  margin: 0;
  flex: 1;
}
.case-deep-card__arrow {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--case-primary);
}

/* 客户墙预览 */
.case-wall {
  padding: 48px 0;
  background: var(--case-primary-soft);
  border-top: 1px solid var(--case-border);
}
.case-wall__inner {
  text-align: center;
}
.case-wall__inner h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 8px;
}
.case-wall__inner > p {
  font-size: 14px;
  color: var(--case-muted);
  margin: 0 0 24px;
}
.case-wall__logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}
.case-wall__logo {
  width: 120px;
  height: 64px;
  background: #fff;
  border: 1px solid var(--case-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}
.case-wall__logo img {
  max-height: 36px;
  max-width: 100%;
  object-fit: contain;
  filter: grayscale(20%);
}

/* 阅读指南 */
.case-guide {
  padding: 48px 0;
  background: #fff;
}
.case-guide details {
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  margin-bottom: 10px;
  overflow: hidden;
}
.case-guide summary {
  padding: 14px 18px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.case-guide summary::-webkit-details-marker {
  display: none;
}
.case-guide details[open] summary {
  background: var(--case-primary-soft);
  color: var(--case-primary-dark);
}
.case-guide__body {
  padding: 0 18px 16px;
  font-size: 13px;
  color: var(--case-muted);
  line-height: 1.7;
}

/* CTA */
.case-cta {
  padding: 56px 0;
  background: linear-gradient(180deg, #f8fafc, #fff);
}
.case-cta__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.case-cta__item {
  text-align: center;
  padding: 28px 20px;
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  background: #fff;
}
.case-cta__item h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
}
.case-cta__item p {
  font-size: 13px;
  color: var(--case-muted);
  margin: 0 0 16px;
}

/* match 卡片复用 */
.match-cases--inline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

@media (max-width: 900px) {
  .case-roles__grid,
  .case-stats__grid,
  .case-cta__grid {
    grid-template-columns: 1fr 1fr;
  }
  .case-stats__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  .case-hero { padding: 52px 0 44px; }
  .case-roles__grid,
  .case-stats__grid,
  .case-cta__grid {
    grid-template-columns: 1fr;
  }
  .case-stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .case-stories-grid {
    grid-template-columns: 1fr;
  }
}