/* ============================================================
   Cart2 Step 2 - 选购商品（SKU 列表）
   方向 A：页面级 CPU 排行榜 + 通用规格条 + tier 分级 + 极简卡片
   遵循 docs/candycake-design-system.md v1 + cart2 step1 视觉
   仅在 /cart?fid=X&gid=Y&carttheme=candycake_cart2 启用
   ============================================================ */

/* ---- Section 容器（复用 step1 同款绿白网格底） ---- */
.cc-step2-section {
  position: relative;
  background:
    radial-gradient(circle at 18% 10%,  rgba(38, 202, 153, .14), transparent 30%),
    radial-gradient(circle at 84% 14%,  rgba(158, 236, 211, .20), transparent 32%),
    linear-gradient(180deg, #f5fffb 0%, #ffffff 38%, #f7fcfa 100%);
  border-radius: var(--cc-radius-lg);
  border: 1px solid var(--cc-border);
  box-shadow: var(--cc-shadow-soft);
  padding: 48px 40px 44px;
  overflow: hidden;
}
.cc-step2-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg,  rgba(18, 166, 124, .04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(18, 166, 124, .04) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 60%);
          mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.cc-step2-section > * { position: relative; z-index: 1; }

/* ---- Hero 头部 ---- */
.cc-step2-head {
  margin-bottom: 28px;
}
.cc-step2-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  padding: 4px 14px;
  margin-bottom: 14px;
  background: linear-gradient(135deg, #f0fbf7, var(--cc-brand-soft));
  color: var(--cc-brand-dark);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .04em;
  border-radius: 999px;
}
.cc-step2-kicker i { font-size: 15px; color: var(--cc-brand); }

.cc-step2-title {
  font-size: clamp(28px, 2.8vw, 40px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.2;
  color: var(--cc-text);
  margin: 0 0 8px;
}
.cc-step2-title .title-accent {
  background: linear-gradient(135deg, var(--cc-brand), var(--cc-brand-strong));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.cc-step2-sub {
  font-size: 15px;
  line-height: 1.75;
  color: #526961;
  margin: 0 0 22px;
  max-width: 720px;
}

/* ---- CPU 排行榜（卡内）---- */
.cc-cpu-rank {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 24px;
  background: rgba(255, 255, 255, .92);
  border: 1px solid var(--cc-brand-border);
  border-radius: var(--cc-radius);
  box-shadow: 0 18px 40px rgba(25, 105, 82, .08);
  -webkit-backdrop-filter: blur(8px);
          backdrop-filter: blur(8px);
}
.cc-cpu-rank-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: var(--cc-text);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: .04em;
}
.cc-cpu-rank-title i { color: var(--cc-brand); font-size: 18px; }
.cc-cpu-rank-title small {
  margin-left: auto;
  color: var(--cc-muted);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0;
}

.cc-cpu-rank-track {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
}
.cc-cpu-rank-arrow {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  color: var(--cc-muted);
}
.cc-cpu-rank-arrow--start { color: #8aa39a; }
.cc-cpu-rank-arrow--end {
  color: var(--cc-brand-dark);
  margin-left: 4px;
}

.cc-cpu-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .02em;
  background: var(--cc-brand-bg);
  color: var(--cc-brand-dark);
  border: 1px solid rgba(var(--cc-brand-rgb), .18);
  white-space: nowrap;
}
.cc-cpu-chip--flagship {
  background: linear-gradient(135deg, var(--cc-brand), var(--cc-brand-strong));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 10px rgba(var(--cc-brand-rgb), .25);
}
.cc-cpu-chip--high {
  background: linear-gradient(135deg, #ddf5ec, #c5ecd9);
  color: var(--cc-brand-dark);
  border-color: rgba(var(--cc-brand-rgb), .28);
}
.cc-cpu-chip--mid     { background: var(--cc-brand-soft); }
.cc-cpu-chip--entry   { background: var(--cc-brand-bg); }
.cc-cpu-chip-arrow {
  color: rgba(var(--cc-brand-rgb), .35);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  user-select: none;
}

/* ---- 通用规格条 ---- */
.cc-step2-universal {
  margin-top: 14px;
  display: flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--cc-border);
  border-radius: 14px;
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 12px 28px rgba(25, 105, 82, .06);
  -webkit-backdrop-filter: blur(8px);
          backdrop-filter: blur(8px);
  overflow: hidden;
}
.cc-step2-uni-item {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-right: 1px solid var(--cc-border);
  min-width: 0;
}
.cc-step2-uni-item:last-child { border-right: none; }
.cc-step2-uni-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #effff9, #d9f8ee);
  color: var(--cc-brand-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
}
.cc-step2-uni-text {
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.cc-step2-uni-label {
  font-size: 11px;
  color: var(--cc-muted);
  letter-spacing: .04em;
  line-height: 1;
  margin-bottom: 4px;
}
.cc-step2-uni-value {
  font-size: 14px;
  font-weight: 900;
  color: var(--cc-text);
  letter-spacing: -.02em;
  line-height: 1.1;
  white-space: nowrap;
}

/* ---- 购买指南折叠卡（来自 ?购买指南 的官方说明）---- */
.cc-step2-guide {
  margin: 16px 0 0;
  padding: 16px 20px;
  border-left: 4px solid var(--cc-brand);
  border-radius: 12px;
  background: rgba(255, 255, 255, .85);
  font-size: 13px;
  color: #526961;
  line-height: 1.85;
}
.cc-step2-guide-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 900;
  color: var(--cc-brand-dark);
  margin-right: 8px;
}
.cc-step2-guide-title i { font-size: 16px; }
.cc-step2-guide-body :is(b, strong) { color: var(--cc-text); }
.cc-step2-guide-body a { color: var(--cc-brand); font-weight: 700; }
.cc-step2-guide-body a:hover { color: var(--cc-brand-dark); }

/* ---- Tier 分组 ---- */
.cc-tier-group { margin-top: 36px; }
.cc-tier-group:first-of-type { margin-top: 28px; }
.cc-tier-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}
.cc-tier-group-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .04em;
}
.cc-tier-group-badge--flagship {
  background: linear-gradient(135deg, var(--cc-brand), var(--cc-brand-strong));
  color: #fff;
  box-shadow: 0 4px 10px rgba(var(--cc-brand-rgb), .26);
}
.cc-tier-group-badge--high  { background: linear-gradient(135deg, #ddf5ec, #c5ecd9); color: var(--cc-brand-dark); }
.cc-tier-group-badge--mid   { background: var(--cc-brand-soft);  color: var(--cc-brand-dark); }
.cc-tier-group-badge--entry { background: var(--cc-brand-bg);     color: var(--cc-brand-dark); }
.cc-tier-group-badge--other { background: #f1f5f4; color: #526961; }
.cc-tier-group-badge--level {
  background: linear-gradient(135deg, var(--cc-brand-bg), var(--cc-brand-soft));
  color: var(--cc-brand-dark);
  border: 1px solid rgba(var(--cc-brand-rgb), .18);
}

.cc-tier-group-name {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--cc-text);
}
.cc-tier-group-desc {
  margin-left: auto;
  font-size: 12px;
  color: var(--cc-muted);
}

/* ---- SKU 卡（横向）---- */
.cc-sku-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cc-sku-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(180px, 220px) 1fr auto auto;
  align-items: center;
  gap: 24px;
  padding: 18px 22px;
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  box-shadow: 0 12px 28px rgba(25, 105, 82, .06);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  color: inherit;
  text-decoration: none;
}
.cc-sku-card:hover {
  transform: translateX(2px);
  border-color: var(--cc-brand-border);
  box-shadow: 0 18px 40px rgba(25, 105, 82, .12);
  color: inherit;
  text-decoration: none;
}

/* === 左：CPU + tier + subtitle + flag === */
.cc-sku-card-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.cc-sku-card-cpu {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.cc-sku-card-cpu-name {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.05;
  background: linear-gradient(135deg, var(--cc-brand), var(--cc-brand-strong));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--cc-brand-dark);
}
.cc-sku-card-tier {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .04em;
  background: var(--cc-brand-bg);
  color: var(--cc-brand-dark);
  white-space: nowrap;
}
.cc-sku-card-tier--flagship { background: linear-gradient(135deg, var(--cc-brand), var(--cc-brand-strong)); color: #fff; }
.cc-sku-card-tier--high     { background: linear-gradient(135deg, #ddf5ec, #c5ecd9); color: var(--cc-brand-dark); }

.cc-sku-card-subtitle {
  font-size: 12px;
  color: var(--cc-muted);
  margin: 0;
  line-height: 1.5;
}
.cc-sku-card-flags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.cc-sku-card-flag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .02em;
}
.cc-sku-card-flag i { font-size: 13px; }
.cc-sku-card-flag--trial { background: linear-gradient(135deg, #f0fbf7, var(--cc-brand-soft)); color: var(--cc-brand-strong); }
.cc-sku-card-flag--bates { background: linear-gradient(135deg, #fff7ed, #ffe8d2); color: #b45309; }

/* === 中：规格三件套（横向）=== */
.cc-sku-card-specs {
  display: flex;
  align-items: center;
  gap: 28px;
  padding-left: 24px;
  border-left: 1px dashed rgba(var(--cc-brand-rgb), .22);
  min-width: 0;
  flex-wrap: wrap;
}
.cc-sku-spec-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 84px;
}
.cc-sku-spec-key {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--cc-muted);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: .04em;
  line-height: 1;
}
.cc-sku-spec-key i { color: var(--cc-brand); font-size: 13px; }
.cc-sku-spec-val {
  font-size: 15px;
  font-weight: 900;
  color: var(--cc-text);
  letter-spacing: -.01em;
  line-height: 1.1;
  white-space: nowrap;
}
.cc-sku-spec-val-accent { color: var(--cc-brand-dark); }

/* === 库存（小列）=== */
.cc-sku-card-stock {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 800;
  border-radius: 999px;
  white-space: nowrap;
}
.cc-sku-card-stock-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.cc-sku-card-stock--ok    { color: #15803d; background: #dcfce7; }
.cc-sku-card-stock--ok    .cc-sku-card-stock-dot { background: var(--cc-success); }
.cc-sku-card-stock--low   { color: #b45309; background: #fef3c7; }
.cc-sku-card-stock--low   .cc-sku-card-stock-dot { background: var(--cc-warning); }
.cc-sku-card-stock--out   { color: #b91c1c; background: #fee2e2; }
.cc-sku-card-stock--out   .cc-sku-card-stock-dot { background: var(--cc-danger); }

/* === 右：价格 + CTA === */
.cc-sku-card-footer {
  display: flex;
  align-items: center;
  gap: 16px;
}
.cc-sku-card-price {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  text-align: right;
  min-width: 0;
}
.cc-sku-card-price-label {
  color: #8aa39a;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
}
.cc-sku-card-price-value {
  display: flex;
  align-items: baseline;
  gap: 2px;
  color: var(--cc-brand-dark);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1;
}
.cc-sku-card-price-value small {
  font-size: 12px;
  font-weight: 700;
  color: #8aa39a;
  margin-left: 2px;
}
.cc-sku-card-price-original {
  font-size: 12px;
  color: var(--cc-muted);
  text-decoration: line-through;
  margin-top: 2px;
}
.cc-sku-card-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 22px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--cc-brand), var(--cc-brand-strong));
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
  box-shadow: 0 8px 18px rgba(var(--cc-brand-rgb), .24);
  transition: background .22s ease, box-shadow .22s ease, transform .22s ease;
  text-decoration: none;
}
.cc-sku-card:hover .cc-sku-card-cta {
  background: linear-gradient(135deg, var(--cc-brand-strong), var(--cc-brand-dark));
  box-shadow: 0 12px 24px rgba(var(--cc-brand-rgb), .35);
}
.cc-sku-card-cta--disabled,
.cc-sku-card-cta--disabled:hover,
.cc-sku-card:hover .cc-sku-card-cta--disabled,
.cc-sku-card--soldout:hover .cc-sku-card-cta--disabled {
  background: #cbd5e1;
  color: #fff;
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

/* 售罄态 */
.cc-sku-card--soldout {
  opacity: .68;
}
.cc-sku-card--soldout .cc-sku-card-cpu-name {
  background: none;
  -webkit-text-fill-color: var(--cc-muted);
  color: var(--cc-muted);
}

/* ---- Fallback：解析失败时回退到原 product.css 主体 ---- */

/* ---- 响应式（横向卡 → 缩列 → 折叠成竖向）---- */
@media (max-width: 1280px) {
  .cc-sku-card {
    grid-template-columns: minmax(160px, 200px) 1fr auto auto;
    gap: 20px;
    padding: 16px 18px;
  }
  .cc-sku-card-cpu-name { font-size: 22px; }
  .cc-sku-card-specs { gap: 20px; padding-left: 18px; }
  .cc-sku-spec-row { min-width: 76px; }
}
@media (max-width: 1100px) {
  .cc-step2-section { padding: 36px 24px 36px; }
  .cc-step2-universal { flex-wrap: wrap; }
  .cc-step2-uni-item { flex-basis: 50%; border-bottom: 1px solid var(--cc-border); }
  .cc-step2-uni-item:nth-last-child(-n+2) { border-bottom: none; }
  .cc-step2-uni-item:nth-child(2n) { border-right: none; }
  .cc-sku-card {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "head    price"
      "specs   specs"
      "stock   cta";
    align-items: center;
    gap: 14px 18px;
  }
  .cc-sku-card-head   { grid-area: head; }
  .cc-sku-card-specs  {
    grid-area: specs;
    padding: 12px 14px;
    border: 1px dashed rgba(var(--cc-brand-rgb), .18);
    border-radius: 10px;
    background: rgba(var(--cc-brand-rgb), .04);
    gap: 24px;
  }
  .cc-sku-card-stock  { grid-area: stock; justify-self: start; }
  .cc-sku-card-footer {
    grid-area: price;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
  }
  .cc-sku-card-footer > .cc-sku-card-cta {
    grid-area: cta;
    justify-self: end;
    align-self: end;
  }
  /* 让 CTA 跑到底部右侧（用绝对 + 占位会更乱，这里改成两行） */
}
@media (max-width: 760px) {
  .cc-step2-section {
    padding: 28px 16px 28px;
    border-radius: var(--cc-radius);
  }
  .cc-step2-title { font-size: 24px; letter-spacing: -.04em; }
  .cc-step2-sub   { font-size: 14px; line-height: 1.75; }
  .cc-cpu-rank { padding: 14px 16px; }
  .cc-step2-uni-item { padding: 10px 14px; }
  .cc-step2-uni-icon { width: 28px; height: 28px; font-size: 15px; }
  .cc-step2-uni-value { font-size: 13px; }
  .cc-sku-card {
    grid-template-columns: 1fr;
    grid-template-areas:
      "head"
      "specs"
      "stock"
      "price";
    padding: 14px;
    gap: 10px;
  }
  .cc-sku-card-cpu-name { font-size: 20px; }
  .cc-sku-card-specs { gap: 16px; }
  .cc-sku-spec-row { min-width: 70px; }
  .cc-sku-spec-val { font-size: 13px; }
  .cc-sku-card-footer {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding-top: 10px;
    border-top: 1px dashed rgba(var(--cc-brand-rgb), .18);
  }
  .cc-sku-card-price { align-items: flex-start; text-align: left; }
  .cc-sku-card-price-value { font-size: 20px; }
  .cc-sku-card-cta { min-height: 38px; padding: 0 16px; font-size: 13px; }
  .cc-tier-group-name { font-size: 16px; }
}
@media (max-width: 520px) {
  .cc-step2-uni-item { flex-basis: 100%; border-right: none; }
  .cc-sku-card-specs { gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .cc-sku-card,
  .cc-sku-card-cta { transition: none; }
  .cc-sku-card:hover { transform: none; }
}