/* ===== 四季体育 / APP下载页专属样式 ===== */
.page-products .product-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 18px;
}
.page-products .product-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(42, 255, 107, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 255, 107, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  -webkit-mask-image: radial-gradient(70% 90% at 68% 0%, #000, transparent 75%);
  mask-image: radial-gradient(70% 90% at 68% 0%, #000, transparent 75%);
}
.page-products .product-hero::after {
  content: "";
  position: absolute;
  right: 14%;
  top: 22px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.14);
  filter: blur(56px);
  pointer-events: none;
}
.page-products .product-hero .site-container {
  position: relative;
  z-index: 1;
}
.page-products .product-hero .breadcrumbs {
  margin-bottom: 28px;
}
.page-products .product-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-products .product-hero__title {
  margin: 18px 0 16px;
  font-size: clamp(1.75rem, 4.6vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 13em;
}
.page-products .product-hero__lead {
  margin: 0 0 14px;
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 600;
  line-height: 1.7;
  color: var(--text-main);
  max-width: 36em;
}
.page-products .product-hero__desc {
  margin: 0;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 52em;
}
.page-products .product-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.page-products .product-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}
.page-products .product-hero-stat {
  min-height: 116px;
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: space-between;
}
.page-products .product-hero-stat__num {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.03em;
}
.page-products .product-hero-stat__num .stat-unit {
  font-size: 0.92rem;
  color: var(--text-sub);
  letter-spacing: 0;
}
.page-products .product-hero-stat .stat-label {
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.5;
}
.page-products .product-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin-top: 42px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}
.page-products .product-hero__index a {
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--text-sub);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  transition: color 0.2s ease;
}
.page-products .product-hero__index a span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
}
.page-products .product-hero__index a:hover {
  color: var(--text-main);
}

/* 功能矩阵 */
.page-products .section-head {
  flex-wrap: wrap;
  gap: 14px;
}
.page-products .product-features__grid {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}
.page-products .feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.page-products .feature-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.page-products .feature-card__num {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-sub);
  letter-spacing: 0.06em;
}
.page-products .feature-card h3 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.45;
  letter-spacing: 0.01em;
}
.page-products .feature-card p {
  margin: 0;
  color: var(--text-sub);
  line-height: 1.75;
  font-size: 0.95rem;
}
.page-products .feature-card__body {
  display: grid;
  gap: 20px;
}
.page-products .feature-card__text {
  display: grid;
  gap: 14px;
}
.page-products .feature-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-products .feature-card__tags li {
  color: var(--text-sub);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 11px;
  font-size: 0.84rem;
  font-weight: 500;
}
.page-products .feature-card__media {
  display: flex;
  justify-content: center;
}
.page-products .feature-card__media img {
  width: min(300px, 100%);
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
}
.page-products .feature-card__thumb img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--float-bg);
}
.page-products .feature-card__link {
  margin-top: auto;
  width: fit-content;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  font-size: 0.92rem;
}
.page-products .feature-card__link:hover {
  border-color: var(--accent);
}
.page-products .feature-card__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-products .feature-card__steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  background: var(--float-bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  font-weight: 700;
  font-size: 0.95rem;
}
.page-products .feature-card__steps li span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
}
.page-products .feature-card__meta {
  font-size: 0.9rem;
  color: var(--text-sub);
}
.page-products .feature-card--check .btn {
  align-self: flex-start;
  margin-top: 6px;
}

/* 下载入口 */
.page-products .product-download {
  background: var(--card-bg);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-products .product-download__wrap {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}
.page-products .product-download__channels {
  display: grid;
  gap: 18px;
}
.page-products .download-card {
  padding: 22px;
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-products .download-card__badge {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-invert);
  background: var(--accent);
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}
.page-products .download-card h3 {
  margin: 6px 0 0;
  font-size: 1.15rem;
}
.page-products .download-card p {
  margin: 0 0 auto;
  color: var(--text-sub);
  font-size: 0.92rem;
  line-height: 1.7;
}
.page-products .download-card .btn {
  margin-top: 14px;
  align-self: flex-start;
}
.page-products .product-download__qr {
  padding: 22px;
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}
.page-products .product-download__qr-head {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.page-products .product-download__qr img {
  width: min(260px, 100%);
  height: auto;
  border-radius: var(--radius-md);
}
.page-products .product-download__qr p {
  margin: 0;
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 30em;
}
.page-products .product-download__guide {
  margin-top: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.page-products .product-download__guide-title h3 {
  margin: 0 0 6px;
  font-size: 1.12rem;
}
.page-products .product-download__guide-title p {
  margin: 0;
  color: var(--text-sub);
  font-size: 0.9rem;
}
.page-products .product-download__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-products .product-download__steps li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 600;
  color: var(--text-main);
}
.page-products .product-download__steps li span {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.82rem;
}
.page-products .product-download__guide-note {
  font-size: 0.9rem;
  color: var(--text-sub);
  border-left: 2px solid var(--accent);
  padding-left: 14px;
  max-width: 46em;
}
.page-products .product-download__guide-note a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-products .product-download__guide-note a:hover {
  border-color: var(--accent);
}

/* 版本记录 */
.page-products .product-versions__list {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}
.page-products .version-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card-bg);
  overflow: hidden;
}
.page-products .version-item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 700;
  color: var(--text-main);
  transition: background 0.2s ease;
}
.page-products .version-item summary::-webkit-details-marker {
  display: none;
}
.page-products .version-item summary:hover {
  background: rgba(var(--accent-rgb), 0.05);
}
.page-products .version-item summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.page-products .version-item[open] summary {
  border-bottom: 1px solid var(--line-soft);
}
.page-products .version-item__tag {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
}
.page-products .version-item__tag--warm {
  color: var(--accent-warm);
  border-color: rgba(var(--accent-warm-rgb), 0.34);
}
.page-products .version-item__arrow {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  line-height: 1;
  color: var(--accent);
  transition: transform 0.2s ease;
}
.page-products .version-item[open] .version-item__arrow {
  transform: rotate(45deg);
}
.page-products .version-item__body {
  padding: 18px 20px;
  color: var(--text-sub);
  font-size: 0.94rem;
  line-height: 1.7;
  display: grid;
  gap: 10px;
  max-width: 72em;
}
.page-products .version-item__body p {
  margin: 0;
}
.page-products .version-item__body a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  width: fit-content;
}
.page-products .version-item__body a:hover {
  border-color: var(--accent);
}

/* 窄屏适配 640px */
@media (min-width: 640px) {
  .page-products .product-hero__stats {
    gap: 16px;
  }
  .page-products .product-download__channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 平板 760px */
@media (min-width: 760px) {
  .page-products .product-features__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .feature-card--phone {
    grid-column: 1 / -1;
  }
  .page-products .feature-card--check {
    grid-column: 1 / -1;
  }
  .page-products .feature-card--phone .feature-card__body {
    grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
    align-items: center;
  }
  .page-products .product-download__guide {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
  }
}

/* 桌面 900px */
@media (min-width: 900px) {
  .page-products .product-hero__layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.75fr);
    gap: 34px;
    align-items: start;
    padding-top: 12px;
  }
  .page-products .product-hero__stats {
    margin-top: 0;
  }
  .page-products .product-download__wrap {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: stretch;
  }
  .page-products .product-download__channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .product-download__qr {
    position: sticky;
    top: 96px;
  }
}

/* 大桌面 1200px */
@media (min-width: 1200px) {
  .page-products .product-features__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
  }
  .page-products .feature-card--phone {
    grid-column: span 7;
  }
  .page-products .feature-card--phone .feature-card__body {
    grid-template-columns: 1fr;
  }
  .page-products .feature-card--phone .feature-card__media {
    max-width: 320px;
    justify-self: center;
  }
  .page-products .feature-card--br {
    grid-column: span 5;
  }
  .page-products .feature-card--injury {
    grid-column: span 5;
  }
  .page-products .feature-card--export {
    grid-column: span 4;
  }
  .page-products .feature-card--check {
    grid-column: span 8;
  }
}