/* ====================================================
   成功案例页面样式 — cases.css
   依赖 style.css 全局变量与组件
   ==================================================== */

/* ===================================================
   面包屑导航（横向，暗色Hero适配）
   =================================================== */
.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  flex-wrap: wrap;
}

.breadcrumb__link {
  font-size: .82rem;
  color: rgba(255,255,255,.65);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.breadcrumb__link:hover { color: rgba(255,255,255,1); }

.breadcrumb__sep { font-size: .78rem; color: rgba(255,255,255,.4); }

.breadcrumb__current {
  font-size: .82rem;
  color: rgba(255,255,255,.9);
  font-weight: 500;
}

/* ===================================================
   Hero 区
   =================================================== */
.cs-hero {
  position: relative;
  background: url(/static/images/cases_compressed.jpg);
  padding: 80px 0 72px;
  overflow: hidden;
}

.cs-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.cs-hero__circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
}
.cs-hero__circle--1 { width: 500px; height: 500px; top: -200px; right: -100px; }
.cs-hero__circle--2 { width: 300px; height: 300px; bottom: -100px; left: -80px; background: rgba(0,198,255,.07); }
.cs-hero__circle--3 { width: 180px; height: 180px; top: 40px; right: 40%; background: rgba(255,255,255,.03); }

.cs-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.cs-hero__content {
  position: relative;
  z-index: 2;
}

.cs-hero__body {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 56px;
  align-items: start;
}

.cs-hero__text {
  padding-top: 8px;
}

.cs-hero__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.18);
  color: rgba(255,255,255,.9);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .82rem;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

.cs-hero__title {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.25;
  color: #FFFFFF;
  margin: 0 0 20px;
}

.cs-hero__highlight {
  background: linear-gradient(90deg, #00C6FF, #A0E6FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cs-hero__desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255,255,255,.75);
  margin: 0 0 32px;
  max-width: 520px;
}
.cs-hero__desc strong {
  color: rgba(255,255,255,.95);
}

.cs-hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Hero 右侧：数据卡 */
.cs-hero__stats {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 毛玻璃数据卡 */
.cs-stat-card {
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 16px;
  padding: 28px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 0;
}

.cs-stat-card__item {
  text-align: center;
}

.cs-stat-card__num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.1;
}
.cs-stat-card__num small {
  font-size: 1rem;
  font-weight: 600;
  opacity: .7;
}

.cs-stat-card__label {
  display: block;
  font-size: .78rem;
  color: rgba(255,255,255,.6);
  margin-top: 4px;
}

.cs-stat-card__divider {
  grid-column: 1 / -1;
  height: 1px;
  background: rgba(255,255,255,.1);
}

/* 行业标签云 */
.cs-industry-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.cs-ib {
  display: inline-block;
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.8);
  border: 1px solid rgba(255,255,255,.15);
  padding: 4px 14px;
  border-radius: 50px;
  font-size: .78rem;
  transition: all var(--transition-fast);
}
.cs-ib:hover {
  background: rgba(255,255,255,.2);
  color: #fff;
}

/* ===================================================
   筛选栏
   =================================================== */
.cs-filter.section-pad {
  padding-bottom: 0 !important;
}

/* 紧跟筛选栏的精选案例区也紧贴 */
.cs-featured.section-pad {
  padding-top: 0;
  padding-bottom: 40px;
}

.cs-filter__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 40px;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: 14px;
  padding: 20px 28px;
  box-shadow: var(--shadow-xs);
}

.cs-filter__group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.cs-filter__label {
  font-size: .84rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.cs-filter__btn {
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text-muted);
  font-size: .82rem;
  border-radius: 50px;
  cursor: pointer;
  transition: all .18s ease;
  white-space: nowrap;
  font-family: inherit;
}
.cs-filter__btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-bg-hover);
}

.cs-filter__btn--active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.cs-filter__btn--active:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

/* ===================================================
   特色案例大卡片
   =================================================== */
.cs-featured-card {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 0;
  background: var(--color-white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-light);
  transition: box-shadow .3s ease;
}
.cs-featured-card:hover {
  box-shadow: var(--shadow-lg);
}

.cs-featured-card__screenshot {
  background: var(--color-gray-50);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--color-border-light);
}

.cs-featured-card__info {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.cs-featured-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.cs-featured-badge {
  font-size: .75rem;
  color: var(--color-warning);
  font-weight: 700;
  margin-left: auto;
}

.cs-featured-card__title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.45;
  margin: 0;
}

.cs-featured-card__challenge,
.cs-featured-card__solution {
  background: var(--color-gray-50);
  border-radius: 10px;
  padding: 16px 18px;
}
.cs-featured-card__challenge h4,
.cs-featured-card__solution h4 {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .84rem;
  font-weight: 700;
  margin: 0 0 8px;
}
.cs-featured-card__challenge h4 { color: var(--color-danger); }
.cs-featured-card__solution h4 { color: var(--color-primary); }
.cs-featured-card__challenge p,
.cs-featured-card__solution p {
  font-size: .88rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin: 0;
}

.cs-featured-card__results {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.cs-featured-metric {
  background: var(--color-bg-hover);
  border-radius: 10px;
  padding: 14px 10px;
  text-align: center;
}
.cs-featured-metric strong {
  display: block;
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.3;
}
.cs-featured-metric span {
  display: block;
  font-size: .72rem;
  color: var(--color-text-muted);
  margin-top: 4px;
  line-height: 1.35;
}

/* ===================================================
   案例网格
   =================================================== */
.cs-grid-section {
  padding: 40px 0;
}

.cs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* ===================================================
   普通案例卡片
   =================================================== */
.cs-card {
  background: var(--color-white);
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  transition: all .3s ease;
}

.cs-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-border);
}

.cs-card__thumb {
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-border-light);
}

.cs-card__body {
  padding: 22px 20px 24px;
}

.cs-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.cs-card__title {
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.45;
  margin: 0 0 10px;
}

.cs-card__desc {
  font-size: .86rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0 0 18px;
}

.cs-card__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border-light);
}

.cs-card__metric {
  text-align: center;
}
.cs-card__metric strong {
  display: block;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-primary);
}
.cs-card__metric span {
  display: block;
  font-size: .7rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ===================================================
   标签样式
   =================================================== */
.cs-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 12px;
  border-radius: 50px;
  font-size: .74rem;
  font-weight: 600;
  white-space: nowrap;
}

/* 行业色 */
.cs-tag--edu     { background: #FCE4EC; color: #C62828; }
.cs-tag--beauty  { background: #FCE4EC; color: #AD1457; }
.cs-tag--finance { background: #E8EAF6; color: #283593; }
.cs-tag--food    { background: #FFF3E0; color: #E65100; }
.cs-tag--medical { background: #E8F5E9; color: #1B5E20; }
.cs-tag--consumer{ background: #F3E5F5; color: #6A1B9A; }
.cs-tag--internet{ background: #E3F2FD; color: #01579B; }
.cs-tag--auto    { background: #ECEFF1; color: #37474F; }

/* 服务类型色 */
.cs-tag--yqseo  { background: #EBF2FF; color: #0052CC; }
.cs-tag--geo    { background: #E0F7FA; color: #006064; }
.cs-tag--pr     { background: #FFF8E1; color: #E65100; }
.cs-tag--kob    { background: #FCE4EC; color: #C62828; }
.cs-tag--media  { background: #F3E5F5; color: #6A1B9A; }

/* ===================================================
   截图占位符
   =================================================== */
.cs-placeholder-img {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.cs-placeholder-img--sm {
  max-height: 200px;
}

.cs-placeholder-img svg {
  width: 100%;
  height: auto;
  display: block;
}

.cs-placeholder-img__badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0,0,0,.55);
  color: rgba(255,255,255,.85);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: .7rem;
  backdrop-filter: blur(4px);
  pointer-events: none;
}

/* ===================================================
   数据统计横幅
   =================================================== */
.cs-stats-banner__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: 14px;
  padding: 32px 20px;
  box-shadow: var(--shadow-xs);
}

.cs-stats-banner__item {
  text-align: center;
  flex: 1;
}

.cs-stats-banner__num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cs-stats-banner__label {
  display: block;
  font-size: .82rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.cs-stats-banner__sep {
  width: 1px;
  height: 40px;
  background: var(--color-border-light);
  flex-shrink: 0;
}

/* ===================================================
   CTA 区
   =================================================== */
.cs-cta {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
}

.cs-cta__bg {
  position: absolute;
  inset: 0;
  background: url(/static/images/zixunback_compressed.jpg);
  pointer-events: none;
}
.cs-cta__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.cs-cta__inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cs-cta__text {
  margin-bottom: 32px;
}

.cs-cta__label {
  display: inline-block;
  font-size: .84rem;
  color: rgba(255,255,255,.75);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50px;
  padding: 6px 20px;
  margin-bottom: 20px;
  letter-spacing: .05em;
}

.cs-cta__title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  margin: 0 0 12px;
}

.cs-cta__desc {
  font-size: 1rem;
  color: rgba(255,255,255,.7);
  margin: 0;
}

.cs-cta__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.cs-cta__badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.cs-cta__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  color: rgba(255,255,255,.8);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .8rem;
  backdrop-filter: blur(4px);
}

/* ===================================================
   响应式：1199px
   =================================================== */
@media (max-width: 1199px) {
  .cs-hero__body {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .cs-hero__stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
  }
  .cs-stat-card {
    flex: 1;
    min-width: 280px;
  }
  .cs-industry-badges {
    width: 100%;
    justify-content: flex-start;
  }
  .cs-hero__title {
    font-size: 2.2rem;
  }

  .cs-featured-card {
    grid-template-columns: 1fr;
  }
  .cs-featured-card__screenshot {
    border-right: none;
    border-bottom: 1px solid var(--color-border-light);
    padding: 24px;
  }
  .cs-featured-card__results {
    grid-template-columns: repeat(4, 1fr);
  }

  .cs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cs-stats-banner__inner {
    flex-wrap: wrap;
    gap: 16px 0;
    padding: 24px 16px;
  }
  .cs-stats-banner__item {
    flex: 0 0 auto;
    min-width: 100px;
  }
  .cs-stats-banner__sep {
    display: none;
  }
}

/* ===================================================
   响应式：767px
   =================================================== */
@media (max-width: 767px) {
  .cs-hero {
    padding: 60px 0 48px;
  }
  .cs-hero__title {
    font-size: 1.7rem;
  }
  .cs-hero__desc {
    font-size: .94rem;
  }
  .cs-stat-card {
    grid-template-columns: 1fr 1fr;
    padding: 20px 16px;
  }
  .cs-stat-card__num {
    font-size: 1.6rem;
  }

  .cs-filter__bar {
    padding: 14px 16px;
    gap: 12px 20px;
  }
  .cs-filter__btn {
    font-size: .76rem;
    padding: 5px 12px;
  }

  .cs-featured-card__info {
    padding: 24px 20px;
    gap: 14px;
  }
  .cs-featured-card__title {
    font-size: 1.15rem;
  }
  .cs-featured-card__results {
    grid-template-columns: repeat(2, 1fr);
  }

  .cs-grid {
    grid-template-columns: 1fr;
  }

  .cs-stats-banner__num {
    font-size: 1.5rem;
  }

  .cs-cta {
    padding: 60px 0;
  }
  .cs-cta__title {
    font-size: 1.6rem;
  }
}

/* ===================================================
   响应式：480px
   =================================================== */
@media (max-width: 480px) {
  .cs-hero__label {
    font-size: .76rem;
    padding: 5px 12px;
  }
  .cs-hero__actions {
    flex-direction: column;
  }
  .cs-featured-metric strong {
    font-size: 1rem;
  }
  .cs-featured-metric span {
    font-size: .68rem;
  }
  .cs-card__title {
    font-size: .94rem;
  }
}