/* ===================================
   智播助手官网 · 模块 5「商家案例」v2
   作用域: .cases-section · .cs-v2-*
   说明:
     视觉对齐 v2 节奏（与 features-v2 / scenarios-v2 / download-v2 一致）
     3 张商家卡 — 引号装饰 + 头像彩色块 + accent 渐变数字
   依赖:
     字体 Sora / Plus Jakarta Sans / JetBrains Mono 由 index.html 全局加载
   =================================== */

/* ============ TOKENS ============ */
.cases-section {
  --csv2-ink-900: #0F172A;
  --csv2-ink-700: #334155;
  --csv2-ink-500: #64748B;
  --csv2-ink-300: #CBD5E1;
  --csv2-ink-200: #E2E8F0;
  --csv2-ink-100: #F1F5F9;
  --csv2-ink-50:  #F8FAFC;

  --csv2-cta-orange: #F97316;

  --csv2-font-display: 'Sora', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --csv2-font-ui:      'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --csv2-font-mono:    'JetBrains Mono', ui-monospace, monospace;
}

/* ============ SECTION ============ */
.cases-section {
  position: relative;
  padding: 96px 24px 88px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 60%, #FFFFFF 100%);
  font-family: var(--csv2-font-ui);
  color: var(--csv2-ink-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
  isolation: isolate;
}

/* 背景装饰：左中淡蓝光斑 */
.cases-section::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 50%;
  left: -120px;
  transform: translateY(-50%);
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, .15) 0%, transparent 70%);
  filter: blur(80px);
  opacity: 0.6;
  pointer-events: none;
}
.cases-section::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 30%;
  right: -100px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16, 185, 129, .12) 0%, transparent 70%);
  filter: blur(80px);
  opacity: 0.5;
  pointer-events: none;
}

.cases-section .container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  padding: 0;
}

/* ============ HEADER ============ */
.cs-v2-header {
  text-align: center;
  margin-bottom: 56px;
}

.cs-v2-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(14, 165, 233, .08);
  border: 1px solid rgba(14, 165, 233, .22);
  border-radius: 999px;
  font-family: var(--csv2-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  font-weight: 600;
  color: #0284C7;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.cs-v2-eyebrow .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #0EA5E9;
  box-shadow: 0 0 0 3px rgba(14, 165, 233, .22);
}

.cs-v2-title {
  font-family: var(--csv2-font-display);
  font-weight: 700;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--csv2-ink-900);
  margin: 0 0 14px;
}

.cs-v2-subtitle {
  font-size: 17px;
  line-height: 1.6;
  color: var(--csv2-ink-500);
  max-width: 720px;
  margin: 0 auto;
}
.cs-v2-subtitle strong {
  color: var(--csv2-ink-900);
  font-weight: 700;
  font-family: var(--csv2-font-mono);
}

/* ============ GRID ============ */
.cs-v2-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============ CARD ============ */
.cs-v2-card {
  --accent: #0EA5E9;
  --accent-deep: #0284C7;
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--csv2-ink-200);
  border-radius: 22px;
  padding: 32px 28px 28px;
  box-shadow: 0 4px 14px -4px rgba(15, 23, 42, .04);
  transition: transform .35s cubic-bezier(.2,.8,.2,1),
              box-shadow .35s ease,
              border-color .35s ease;
  overflow: hidden;
}

/* 顶部 accent 描边条 */
.cs-v2-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
}

.cs-v2-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 35%, transparent);
  box-shadow: 0 24px 48px -20px color-mix(in srgb, var(--accent) 25%, transparent),
              0 8px 16px -8px rgba(15, 23, 42, .06);
}

/* 顶部装饰引号 */
.cs-v2-quote-mark {
  font-family: var(--csv2-font-display);
  font-size: 64px;
  line-height: 0.7;
  font-weight: 800;
  color: color-mix(in srgb, var(--accent) 22%, transparent);
  margin: 0 0 -12px;
  user-select: none;
  letter-spacing: -0.05em;
}

/* 评价文案 */
.cs-v2-quote {
  font-size: 15px;
  line-height: 1.7;
  color: var(--csv2-ink-700);
  margin: 0 0 24px;
  flex: 1;
}
.cs-v2-quote strong {
  color: var(--csv2-ink-900);
  font-weight: 700;
}

/* 商家信息（头像+姓名+身份） */
.cs-v2-merchant {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px dashed var(--csv2-ink-200);
  margin-bottom: 20px;
}

.cs-v2-avatar {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--csv2-font-display);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow: 0 4px 8px -2px color-mix(in srgb, var(--accent) 35%, transparent);
}

.cs-v2-merchant-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.cs-v2-merchant-name {
  font-family: var(--csv2-font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--csv2-ink-900);
  margin: 0;
}
.cs-v2-merchant-role {
  font-size: 13px;
  color: var(--csv2-ink-500);
  margin: 0;
}

/* 数据格 */
.cs-v2-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.cs-v2-stat {
  background: color-mix(in srgb, var(--accent) 6%, #fff);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
  border-radius: 14px;
  padding: 14px 12px;
  text-align: center;
  transition: background .25s ease, border-color .25s ease;
}
.cs-v2-card:hover .cs-v2-stat {
  background: color-mix(in srgb, var(--accent) 10%, #fff);
}

.cs-v2-stat-value {
  display: block;
  font-family: var(--csv2-font-mono);
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.01em;
  line-height: 1.1;
  margin-bottom: 4px;
}

.cs-v2-stat-label {
  display: block;
  font-size: 12px;
  color: var(--csv2-ink-500);
  letter-spacing: .02em;
}

/* ===================================================================
   响应式
   =================================================================== */

/* 平板 1024 - 1099 */
@media (max-width: 1099px) {
  .cs-v2-grid {
    gap: 18px;
  }
  .cs-v2-card {
    padding: 28px 24px 24px;
  }
}

/* 平板 720-1023 — 仍 3 列但更紧凑 */
@media (max-width: 1023px) and (min-width: 721px) {
  .cs-v2-grid {
    gap: 16px;
  }
  .cs-v2-quote {
    font-size: 14px;
  }
  .cs-v2-stat-value {
    font-size: 20px;
  }
}

/* 移动 ≤720 — 单列堆叠 */
@media (max-width: 720px) {
  .cases-section {
    padding: 64px 16px 56px;
  }
  .cs-v2-header {
    margin-bottom: 36px;
  }
  .cs-v2-title {
    font-size: 28px;
  }
  .cs-v2-subtitle {
    font-size: 15px;
  }
  .cs-v2-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .cs-v2-card {
    padding: 28px 22px 22px;
    border-radius: 18px;
  }
  .cs-v2-quote-mark {
    font-size: 52px;
    margin-bottom: -8px;
  }
  .cs-v2-quote {
    font-size: 14.5px;
  }
  .cs-v2-stat-value {
    font-size: 20px;
  }
}

/* 减弱动画 */
@media (prefers-reduced-motion: reduce) {
  .cs-v2-card,
  .cs-v2-stat {
    transition: none !important;
  }
  .cs-v2-card:hover {
    transform: none;
  }
}