/* =========================================================================
 * 音悦声 · 客户端下载页（#/download）
 * -------------------------------------------------------------------------
 * 结构：
 *   .dl-hero      顶部横幅，自动识别当前终端并高亮推荐
 *   .dl-grid      四个终端卡片（安卓手机 / 平板 / 安卓TV / 苹果）
 *   .dl-card      单张卡片：图标 + 名称 + 说明 + 下载按钮 + 元信息
 *   .dl-ios       iOS 的「添加到主屏幕」图文指引
 * ========================================================================= */

/* ---------------------------- 顶部横幅 ---------------------------- */
.dl-hero {
  position: relative;
  overflow: hidden;
  padding: 30px 32px;
  border-radius: 22px;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--brand) 22%, var(--panel)),
    color-mix(in srgb, var(--brand-2) 12%, var(--panel)));
  border: 1px solid color-mix(in srgb, var(--brand) 26%, transparent);
}
.dl-hero::after {
  /* 右侧柔和光晕，呼应站点 ambient 风格 */
  content: '';
  position: absolute;
  right: -60px; top: -60px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--brand) 40%, transparent), transparent 70%);
  pointer-events: none;
}
.dl-hero h2 {
  margin: 0 0 6px;
  font-size: 27px;
  letter-spacing: 0.01em;
}
.dl-hero p {
  margin: 0;
  color: var(--dim);
  font-size: 14px;
  line-height: 1.7;
  max-width: 60ch;
}
.dl-detect {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 8px 15px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 34%, transparent);
  font-size: 13px;
  font-weight: 600;
}
.dl-detect .ic { width: 16px; height: 16px; }

/* ---------------------------- 卡片网格 ---------------------------- */
.dl-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
}
.dl-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.dl-card:hover {
  border-color: color-mix(in srgb, var(--brand) 42%, transparent);
  transform: translateY(-2px);
}
/* 当前终端对应的卡片：高亮 + 「适配你的设备」角标 */
.dl-card.is-match {
  border-color: var(--brand);
  box-shadow: 0 0 0 1px var(--brand), 0 10px 30px var(--glow);
  position: relative;
}
.dl-card.is-match::before {
  content: '适配你的设备';
  position: absolute;
  top: -10px; left: 18px;
  padding: 3px 11px;
  border-radius: 999px;
  background: var(--brand);
  color: var(--on-brand);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.dl-head { display: flex; align-items: center; gap: 13px; }
.dl-icon {
  width: 52px; height: 52px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: var(--on-brand);
  box-shadow: 0 8px 22px var(--glow);
}
.dl-icon.alt {
  background: linear-gradient(135deg, #4a90d9, #2c6fb5);
  box-shadow: 0 8px 22px rgba(74, 144, 217, 0.3);
}
.dl-icon .ic { width: 27px; height: 27px; }
.dl-title { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.dl-title b { font-size: 16.5px; }
.dl-title span { font-size: 12px; color: var(--mute); }

.dl-desc {
  font-size: 13px;
  color: var(--dim);
  line-height: 1.7;
  margin: 0;
  min-height: 3.4em;
}

/* 卡片里的特性小标签 */
.dl-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.dl-tag {
  padding: 3px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text) 7%, transparent);
  border: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--dim);
}

.dl-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 11.5px;
  color: var(--mute);
  padding-top: 4px;
  border-top: 1px dashed var(--line);
}
.dl-meta code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 5px;
  background: color-mix(in srgb, var(--text) 8%, transparent);
}

/* 下载按钮：卡片底部，撑满 */
.dl-actions { margin-top: auto; display: flex; gap: 8px; }
.dl-actions .btn { flex: 1; justify-content: center; }
.dl-actions .btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---------------------------- iOS 指引 ---------------------------- */
.dl-ios {
  padding: 22px 24px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--text) 3%, var(--panel));
  border: 1px solid var(--line);
}
.dl-ios h3 {
  margin: 0 0 4px;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.dl-ios > p { margin: 0 0 15px; font-size: 13px; color: var(--dim); line-height: 1.7; }
.dl-steps {
  display: grid;
  gap: 11px;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
}
.dl-step {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  padding: 13px;
  border-radius: 13px;
  background: color-mix(in srgb, var(--text) 4%, transparent);
}
.dl-step i {
  flex: none;
  width: 24px; height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--brand);
  color: var(--on-brand);
  font-size: 12px;
  font-weight: 700;
  font-style: normal;
}
.dl-step b { display: block; font-size: 13px; margin-bottom: 2px; }
.dl-step span { font-size: 12px; color: var(--mute); line-height: 1.6; }

/* ---------------------------- 校验信息行 ---------------------------- */
.dl-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  font-size: 12px;
  color: var(--mute);
  padding: 14px 18px;
  border-radius: 13px;
  background: color-mix(in srgb, var(--text) 3%, transparent);
  border: 1px solid var(--line);
}
.dl-foot .ic { width: 15px; height: 15px; }

/* ---------------------------- 响应式 ---------------------------- */
@media (max-width: 767px) {
  .dl-hero { padding: 22px 18px; border-radius: 18px; }
  .dl-hero h2 { font-size: 22px; }
  .dl-hero p { font-size: 13px; }
  .dl-grid { grid-template-columns: 1fr; gap: 13px; }
  .dl-card { padding: 18px; }
  .dl-desc { min-height: auto; }
}