/* ===================================
   智播助手官网 · 模块 6「下载」v2
   作用域: .download-section · .dl-v2-*
   说明:
     双卡片重构 — 左卡轻量版（蓝 · 立即下载）/ 右卡专业版（橙 · 扫码咨询客服）
     与 features-v2 / scenarios-v2 视觉风格延续
   依赖:
     字体 Sora / Plus Jakarta Sans / JetBrains Mono 由 index.html 全局加载
   =================================== */

/* ============ TOKENS ============ */
.download-section {
  --dlv2-ink-900: #0F172A;
  --dlv2-ink-700: #334155;
  --dlv2-ink-500: #64748B;
  --dlv2-ink-300: #CBD5E1;
  --dlv2-ink-200: #E2E8F0;
  --dlv2-ink-100: #F1F5F9;
  --dlv2-ink-50:  #F8FAFC;

  --dlv2-cta-orange: #F97316;
  --dlv2-cta-orange-deep: #EA580C;

  --dlv2-font-display: 'Sora', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --dlv2-font-ui:      'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --dlv2-font-mono:    'JetBrains Mono', ui-monospace, monospace;
}

/* ============ SECTION ============ */
.download-section {
  position: relative;
  padding: 96px 24px 88px;
  background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 60%, #F1F5F9 100%);
  font-family: var(--dlv2-font-ui);
  color: var(--dlv2-ink-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
  isolation: isolate;
}

/* 装饰背景：右上 + 左下大色斑 */
.download-section::before,
.download-section::after {
  content: "";
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  pointer-events: none;
}
.download-section::before {
  top: -120px;
  right: -100px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(14, 165, 233, .25) 0%, transparent 70%);
}
.download-section::after {
  bottom: -100px;
  left: -120px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(249, 115, 22, .22) 0%, transparent 70%);
}

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

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

.dl-v2-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(249, 115, 22, .08);
  border: 1px solid rgba(249, 115, 22, .22);
  border-radius: 999px;
  font-family: var(--dlv2-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  font-weight: 600;
  color: var(--dlv2-cta-orange-deep);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.dl-v2-eyebrow .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--dlv2-cta-orange);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, .22);
}

.dl-v2-title {
  font-family: var(--dlv2-font-display);
  font-weight: 700;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--dlv2-ink-900);
  margin: 0 0 14px;
}

.dl-v2-subtitle {
  font-size: 17px;
  line-height: 1.6;
  color: var(--dlv2-ink-500);
  max-width: 640px;
  margin: 0 auto;
}
.dl-v2-subtitle strong {
  color: var(--dlv2-ink-900);
  font-weight: 700;
}

/* ============ GRID ============ */
.dl-v2-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  align-items: stretch;
}

/* ============ CARD ============ */
.dl-v2-card {
  --accent: #0EA5E9;
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--dlv2-ink-200);
  border-radius: 24px;
  padding: 40px 36px 36px;
  box-shadow: 0 4px 16px -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 */
.dl-v2-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 60%, transparent));
}

.dl-v2-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 35%, transparent);
  box-shadow: 0 28px 56px -24px color-mix(in srgb, var(--accent) 30%, transparent),
              0 8px 16px -8px rgba(15, 23, 42, .06);
}

/* 专业版卡视觉权重略高：浅渐变底 + 阴影更深 */
.dl-v2-card--pro {
  background: linear-gradient(165deg, #FFF7ED 0%, #FFFFFF 60%, #FFF7ED 100%);
  border-color: rgba(249, 115, 22, .25);
  box-shadow: 0 12px 28px -8px rgba(249, 115, 22, .12),
              0 4px 12px rgba(15, 23, 42, .05);
}
.dl-v2-card--pro::before {
  background: linear-gradient(90deg, var(--accent), var(--dlv2-cta-orange-deep));
}

/* 专业版右上角 PRO 角标 */
.dl-v2-card--pro::after {
  content: "RECOMMENDED";
  position: absolute;
  top: 22px;
  right: -36px;
  width: 144px;
  padding: 4px 0;
  background: var(--dlv2-cta-orange);
  color: #fff;
  font-family: var(--dlv2-font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-align: center;
  transform: rotate(35deg);
  box-shadow: 0 4px 8px rgba(249, 115, 22, .35);
}

/* ============ CARD HEADER ============ */
.dl-v2-card-header {
  margin-bottom: 22px;
}

.dl-v2-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: color-mix(in srgb, var(--accent) 12%, #fff);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: 999px;
  font-family: var(--dlv2-font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 14px;
}

.dl-v2-card-title {
  font-family: var(--dlv2-font-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--dlv2-ink-900);
  margin: 0 0 6px;
  line-height: 1.1;
}

.dl-v2-card-subtitle {
  font-size: 14.5px;
  color: var(--dlv2-ink-500);
  margin: 0;
  line-height: 1.5;
}

/* ============ FEATURES ============ */
.dl-v2-features {
  list-style: none;
  margin: 0 0 28px;
  padding: 22px 0;
  border-top: 1px dashed var(--dlv2-ink-200);
  border-bottom: 1px dashed var(--dlv2-ink-200);
  display: flex;
  flex-direction: column;
  gap: 11px;
  flex: 1;
}

.dl-v2-features li {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  color: var(--dlv2-ink-700);
  line-height: 1.5;
}

.dl-v2-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 15%, #fff);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230EA5E9' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 11px 11px;
}

/* 专业版的 ✓ 用 CTA 橙色 */
.dl-v2-card--pro .dl-v2-features li::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23F97316' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
}

.dl-v2-features li strong {
  color: var(--dlv2-ink-900);
  font-weight: 700;
}

/* ============ CTA ROW ============ */
.dl-v2-cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.dl-v2-cta {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 20px;
  border-radius: 14px;
  font-family: var(--dlv2-font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .005em;
  text-decoration: none;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  transition: transform .25s cubic-bezier(.2,.8,.2,1),
              box-shadow .25s ease,
              filter .25s ease;
}

/* 轻量版主 CTA：蓝色实心 */
.dl-v2-cta--primary {
  background: linear-gradient(135deg, #0EA5E9 0%, #0284C7 100%);
  color: #fff;
  box-shadow: 0 8px 18px -6px rgba(14, 165, 233, .45),
              0 2px 4px rgba(15, 23, 42, .06);
}
.dl-v2-cta--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -8px rgba(14, 165, 233, .55),
              0 4px 8px rgba(15, 23, 42, .08);
  filter: brightness(1.05);
}

/* 专业版 CTA：CTA 橙色实心（更高视觉权重） */
.dl-v2-cta--secondary {
  background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
  color: #fff;
  box-shadow: 0 10px 22px -6px rgba(249, 115, 22, .50),
              0 2px 4px rgba(15, 23, 42, .06);
}
.dl-v2-cta--secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -8px rgba(249, 115, 22, .60),
              0 4px 8px rgba(15, 23, 42, .08);
  filter: brightness(1.05);
}

.dl-v2-cta-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ============ QR ============ */
.dl-v2-qr {
  flex-shrink: 0;
  width: 88px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.dl-v2-qr-img {
  width: 88px;
  height: 88px;
  border-radius: 12px;
  border: 1px solid var(--dlv2-ink-200);
  background: #fff;
  padding: 4px;
  object-fit: cover;
  box-shadow: 0 2px 6px rgba(15, 23, 42, .06);
}

.dl-v2-qr-tip {
  font-family: var(--dlv2-font-mono);
  font-size: 10.5px;
  letter-spacing: .04em;
  color: var(--dlv2-ink-500);
  text-align: center;
  line-height: 1.2;
}

/* ============ META（底部辅助信息） ============ */
.dl-v2-meta {
  margin: 0;
  font-family: var(--dlv2-font-mono);
  font-size: 12px;
  color: var(--dlv2-ink-500);
  letter-spacing: .02em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.dl-v2-meta::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ============ TRUST FOOTER（底部小字 · 4 项保证） ============ */
.dl-v2-trust {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px dashed var(--dlv2-ink-200);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 32px 40px;
}
.dl-v2-trust-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--dlv2-ink-500);
}
.dl-v2-trust-item svg {
  width: 16px;
  height: 16px;
  color: #10B981;
  flex-shrink: 0;
}

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

/* 平板：保持双卡，padding 收紧 */
@media (max-width: 1023px) {
  .download-section {
    padding: 80px 24px 72px;
  }
  .dl-v2-grid {
    gap: 20px;
  }
  .dl-v2-card {
    padding: 36px 28px 30px;
  }
  .dl-v2-card-title {
    font-size: 28px;
  }
  .dl-v2-cta-row {
    gap: 12px;
  }
  .dl-v2-qr {
    width: 80px;
  }
  .dl-v2-qr-img {
    width: 80px;
    height: 80px;
  }
}

/* 移动：双卡 → 单列堆叠 */
@media (max-width: 720px) {
  .download-section {
    padding: 64px 16px 56px;
  }
  .dl-v2-header {
    margin-bottom: 36px;
  }
  .dl-v2-title {
    font-size: 28px;
  }
  .dl-v2-subtitle {
    font-size: 15px;
  }
  .dl-v2-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .dl-v2-card {
    padding: 32px 24px 28px;
    border-radius: 20px;
  }
  .dl-v2-card-title {
    font-size: 26px;
  }
  /* 专业版斜角徽带在小屏幕上稍微缩小 */
  .dl-v2-card--pro::after {
    top: 18px;
    right: -38px;
    width: 130px;
    font-size: 9px;
  }
  .dl-v2-cta-row {
    flex-direction: column;
    gap: 16px;
  }
  .dl-v2-cta {
    width: 100%;
    padding: 14px 18px;
    font-size: 14.5px;
  }
  .dl-v2-qr {
    flex-direction: row;
    width: auto;
    gap: 12px;
  }
  .dl-v2-qr-img {
    width: 72px;
    height: 72px;
  }
  .dl-v2-qr-tip {
    text-align: left;
    font-size: 11px;
  }
  .dl-v2-trust {
    margin-top: 36px;
    padding-top: 24px;
    gap: 14px 24px;
  }
}

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