/* =========================================================
   资源中心 / 页面作用域：.page-downloads
   ========================================================= */

.page-downloads {
  --res-panel-pad: var(--space-6);
  --res-row-pad: var(--space-4);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-downloads .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-2);
  padding: var(--space-4) 0 var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}
.page-downloads .breadcrumbs__item {
  color: inherit;
  text-decoration: none;
  line-height: 1.6;
}
.page-downloads .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: var(--space-2);
  color: var(--color-line);
}
.page-downloads a.breadcrumbs__item:hover,
.page-downloads a.breadcrumbs__item:focus-visible {
  color: var(--color-accent);
}

/* ---------- 首屏 ---------- */
.page-downloads .res-hero {
  position: relative;
  padding: var(--space-4) 0 var(--space-6);
  overflow: hidden;
}
.page-downloads .res-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(130% 78% at 88% -8%, var(--color-primary-soft) 0%, transparent 58%),
    linear-gradient(168deg, var(--color-surface) 0%, var(--color-surface-alt) 62%, var(--color-surface) 100%);
}
.page-downloads .res-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: 12%;
  z-index: -1;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-accent) 14%, transparent) 0%, transparent 70%);
  pointer-events: none;
}

.page-downloads .res-hero__inner {
  display: grid;
  gap: var(--space-4);
}

/* 左侧分类骨架 */
.page-downloads .res-hero__spine {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.page-downloads .res-hero__spine-cap {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-ink-muted);
}
.page-downloads .res-hero__spine-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-downloads .res-spine__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 76%, transparent);
  text-decoration: none;
  color: var(--color-ink);
  transition: border-color 0.24s ease, transform 0.24s ease, background-color 0.24s ease;
}
.page-downloads .res-spine__link:hover,
.page-downloads .res-spine__link:focus-visible {
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-highlight) 55%, var(--color-surface));
  transform: translateX(3px);
}
.page-downloads .res-spine__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}
.page-downloads .res-spine__name {
  font-size: var(--text-xs);
  line-height: 1.45;
  color: var(--color-ink-soft);
}

/* 右侧渐变面板 */
.page-downloads .res-hero__panel {
  position: relative;
  padding: var(--res-panel-pad);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(152deg, var(--color-primary-soft) 0%, color-mix(in srgb, var(--color-surface) 92%, transparent) 44%, var(--color-surface-alt) 100%);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}
.page-downloads .res-hero__panel::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -16%;
  width: 58%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-primary) 24%, transparent) 0%, transparent 68%);
  pointer-events: none;
}
.page-downloads .res-hero__panel > * {
  position: relative;
  z-index: 1;
}

.page-downloads .res-hero__title {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}
.page-downloads .res-hero__lede {
  margin: 0 0 var(--space-4);
  max-width: 46ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-downloads .res-hero__figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: 0;
}
.page-downloads .res-figure {
  padding: var(--space-3) var(--space-2);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 26%, var(--color-line));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 74%, transparent);
}
.page-downloads .res-figure__k {
  margin-bottom: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.page-downloads .res-figure__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

/* 首屏图 */
.page-downloads .res-hero__media {
  margin: 0;
  align-self: start;
}
.page-downloads .res-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 分类区块 ---------- */
.page-downloads .res-cat {
  padding: var(--space-6) 0 0;
}
.page-downloads .res-cat__frame {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}
.page-downloads .res-cat__frame--alt {
  background: var(--color-surface-alt);
}
.page-downloads .res-cat__frame--deep {
  background: var(--color-surface-deep);
}

.page-downloads .res-cat__head {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--res-row-pad);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: linear-gradient(112deg, color-mix(in srgb, var(--color-primary) 10%, transparent) 0%, transparent 62%);
}
.page-downloads .res-cat__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}
.page-downloads .res-cat__head-body {
  flex: 1 1 auto;
  min-width: 0;
}
.page-downloads .res-cat__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}
.page-downloads .res-cat__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}
.page-downloads .res-cat__count {
  flex: none;
  padding: 3px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  white-space: nowrap;
}

/* ---------- 条目行 ---------- */
.page-downloads .res-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-downloads .res-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2) var(--space-3);
  padding: var(--res-row-pad);
  transition: background-color 0.24s ease;
}
.page-downloads .res-item + .res-item {
  border-top: var(--border-thin) solid var(--color-line);
}
.page-downloads .res-item:hover,
.page-downloads .res-item:focus-within {
  background: color-mix(in srgb, var(--color-primary) 9%, transparent);
}
.page-downloads .res-item__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--color-ink-muted);
  transition: color 0.24s ease;
}
.page-downloads .res-item:hover .res-item__num {
  color: var(--color-accent);
}
.page-downloads .res-item__body {
  min-width: 0;
}
.page-downloads .res-item__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.4;
  color: var(--color-ink);
}
.page-downloads .res-item__desc {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}
.page-downloads .res-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-downloads .res-item__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 3px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  line-height: 1.6;
  transition: border-color 0.24s ease;
}
.page-downloads .res-item:hover .res-item__meta li {
  border-color: color-mix(in srgb, var(--color-accent) 40%, var(--color-line));
}
.page-downloads .res-meta__k {
  color: var(--color-ink-muted);
}
.page-downloads .res-meta__v {
  color: var(--color-ink);
  font-weight: 600;
}

/* ---------- 中段停顿带 ---------- */
.page-downloads .res-guide-band {
  padding: var(--space-6) 0 0;
}
.page-downloads .res-guide-band__grid {
  display: grid;
  gap: var(--space-4);
  align-items: center;
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(130deg, color-mix(in srgb, var(--color-primary-soft) 70%, var(--color-surface)) 0%, var(--color-surface) 72%);
}
.page-downloads .res-guide-band__media {
  margin: 0;
}
.page-downloads .res-guide-band__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-downloads .res-guide-band__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}
.page-downloads .res-guide-band__text {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}
.page-downloads .res-guide-band__text:last-child {
  margin-bottom: 0;
}

/* ---------- 获取方式 ---------- */
.page-downloads .res-access {
  padding: var(--space-8) 0 0;
}
.page-downloads .res-access__head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}
.page-downloads .res-access__title {
  margin: var(--space-2) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}
.page-downloads .res-access__lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-downloads .res-access__grid {
  display: grid;
  gap: var(--space-6);
}
.page-downloads .res-way-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}
.page-downloads .res-way {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-1) var(--space-3);
  padding: var(--space-4) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}
.page-downloads .res-way__mark {
  grid-row: 1 / span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1;
}
.page-downloads .res-way__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.35;
  color: var(--color-ink);
}
.page-downloads .res-way__text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}
.page-downloads .res-access__media {
  margin: 0;
  align-self: start;
}
.page-downloads .res-access__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 准备事项 */
.page-downloads .res-prep {
  margin-top: var(--space-6);
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-deep);
}
.page-downloads .res-prep__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.4;
  color: var(--color-ink);
}
.page-downloads .res-prep__list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-downloads .res-prep__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
}
.page-downloads .res-prep__num {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-primary);
  line-height: 1.6;
}
.page-downloads .res-prep__item p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}
.page-downloads .res-prep__note {
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 反色子页入口 ---------- */
.page-downloads .res-child {
  padding: var(--space-6) 0 0;
}
.page-downloads .res-child__card {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--color-contrast-accent) 22%, transparent) 0%, transparent 58%),
    var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-contrast-line);
  text-decoration: none;
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-2);
  transition: transform 0.28s ease, border-color 0.28s ease;
}
.page-downloads .res-child__card:hover,
.page-downloads .res-child__card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--color-contrast-accent);
}
.page-downloads .res-child__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}
.page-downloads .res-child__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}
.page-downloads .res-child__desc {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
}
.page-downloads .res-child__go {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-contrast-accent);
}

/* ---------- 使用建议 ---------- */
.page-downloads .res-guide {
  padding: var(--space-6) 0 var(--space-8);
}
.page-downloads .res-guide__frame {
  padding: var(--space-6);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
}
.page-downloads .res-guide__head {
  max-width: var(--measure);
  margin-bottom: var(--space-4);
}
.page-downloads .res-guide__title {
  margin: var(--space-2) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}
.page-downloads .res-guide__lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}
.page-downloads .res-guide__list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-downloads .res-guide__link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 82%, transparent);
  text-decoration: none;
  transition: border-color 0.24s ease, background-color 0.24s ease, transform 0.24s ease;
}
.page-downloads .res-guide__link:hover,
.page-downloads .res-guide__link:focus-visible {
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-highlight) 48%, var(--color-surface));
  transform: translateX(3px);
}
.page-downloads .res-guide__k {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}
.page-downloads .res-guide__v {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

/* =========================================================
   媒体查询
   ========================================================= */

@media (min-width: 720px) {
  .page-downloads .res-hero__spine-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-downloads .res-guide-band__grid {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: var(--space-6);
  }
  .page-downloads .res-guide__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-downloads .res-guide__link {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    height: 100%;
  }
}

@media (min-width: 900px) {
  .page-downloads .res-hero {
    padding: var(--space-6) 0 var(--section-y);
  }
  .page-downloads .res-hero__inner {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }
  .page-downloads .res-hero__spine-list {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-downloads .res-hero__media {
    grid-column: 1 / -1;
    max-width: 720px;
  }
  .page-downloads .res-access__grid {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: var(--space-8);
    align-items: start;
  }
  .page-downloads .res-cat {
    padding-top: var(--section-y);
  }
  .page-downloads .res-guide-band {
    padding-top: var(--section-y);
  }
  .page-downloads .res-child {
    padding-top: var(--section-y);
  }
  .page-downloads .res-access {
    padding-top: var(--section-y-lg);
  }
  .page-downloads .res-guide {
    padding-top: var(--section-y-lg);
    padding-bottom: var(--section-y-lg);
  }
  .page-downloads .res-guide__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-downloads .res-hero__inner {
    grid-template-columns: 168px minmax(0, 1fr) 340px;
    gap: var(--space-6);
  }
  .page-downloads .res-hero__media {
    grid-column: auto;
    max-width: none;
  }
  .page-downloads .res-hero__panel {
    padding: var(--space-6) var(--space-6) var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-downloads .res-spine__link,
  .page-downloads .res-item,
  .page-downloads .res-guide__link,
  .page-downloads .res-child__card {
    transition: none;
  }
  .page-downloads .res-spine__link:hover,
  .page-downloads .res-guide__link:hover,
  .page-downloads .res-child__card:hover {
    transform: none;
  }
}