/* ================= 复盘专栏 / articles ================= */

.page-articles {
  --art-pad: clamp(16px, 4vw, 32px);
  --art-rule: var(--color-line);
}

/* ---------- 封面 ---------- */
.page-articles .art-hero {
  position: relative;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  overflow: hidden;
}

.page-articles .art-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-articles .art-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.page-articles .art-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-articles .art-hero__inner {
  position: relative;
  z-index: 1;
  padding-block: calc(var(--section-y-lg) * 0.86) var(--section-y-lg);
}

.page-articles .art-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

.page-articles .art-crumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-ink) 34%, transparent);
}

.page-articles .art-crumbs a:hover,
.page-articles .art-crumbs a:focus-visible {
  color: var(--color-contrast-accent);
  border-bottom-color: currentColor;
}

.page-articles .art-hero .eyebrow {
  color: var(--color-contrast-accent);
}

.page-articles .art-hero__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 0.98;
  letter-spacing: -0.015em;
  max-width: 13ch;
}

.page-articles .art-hero__lede {
  margin: var(--space-3) 0 0;
  max-width: 54ch;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-articles .art-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2) var(--space-3);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thick) solid var(--color-contrast-line);
}

.page-articles .art-stats__item {
  display: grid;
  gap: 6px;
  padding-left: var(--space-2);
  border-left: var(--border-thick) solid var(--color-contrast-accent);
}

.page-articles .art-stats dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-articles .art-stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 600;
  line-height: 1;
  color: var(--color-contrast-ink);
}

/* ---------- 区块小标题 ---------- */
.page-articles .art-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.page-articles .art-head__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-primary);
  padding-bottom: 6px;
  border-bottom: var(--border-thick) solid var(--color-primary);
  justify-self: start;
}

.page-articles .art-head__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-articles .art-head__desc {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 通用图 ---------- */
.page-articles .art-figure {
  margin: 0 0 var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
}

.page-articles .art-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-articles .art-figure--wide img {
  aspect-ratio: 7 / 4;
}

.page-articles .art-figure--tight img {
  aspect-ratio: 8 / 5;
}

.page-articles .art-figure figcaption {
  padding: var(--space-2) var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

/* ---------- 条目流 ---------- */
.page-articles .art-flow {
  background: var(--color-surface);
}

.page-articles .art-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.page-articles .art-panel {
  display: grid;
  gap: 0;
}

.page-articles .art-panel[hidden] {
  display: none;
}

.page-articles .art-entry {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-top: var(--border-thick) solid var(--art-rule);
  transition: border-color 0.18s ease;
}

.page-articles .art-entry:last-child {
  border-bottom: var(--border-thick) solid var(--art-rule);
}

.page-articles .art-entry__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
}

.page-articles .art-entry__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.34;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-articles .art-entry__desc {
  margin: 0;
  max-width: 66ch;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-articles .art-entry__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  margin: 4px 0 0;
}

.page-articles .art-entry__stat {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
  border-radius: var(--radius-sm);
  padding: 3px 10px;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-articles .art-entry__go {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 45%, transparent);
}

.page-articles .art-entry__go:hover,
.page-articles .art-entry__go:focus-visible {
  color: var(--color-focus);
  border-bottom-color: currentColor;
}

@media (hover: hover) {
  .page-articles .art-entry:hover {
    border-top-color: var(--color-primary);
  }

  .page-articles .art-entry:hover .art-entry__stat {
    background: var(--color-accent);
    color: var(--color-accent-ink);
  }
}

/* ---------- 轮次轨道 ---------- */
.page-articles .art-rounds {
  background: var(--color-surface-alt);
}

.page-articles .art-track {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--space-4);
  border-left: var(--border-thick) solid var(--color-primary);
  display: grid;
  gap: var(--space-4);
}

.page-articles .art-track__item {
  position: relative;
  display: grid;
  gap: 6px;
}

.page-articles .art-track__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-4) - 5px);
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-surface-alt);
}

.page-articles .art-track__round {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1;
  color: var(--color-primary);
}

.page-articles .art-track__round::before {
  content: "第 ";
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
}

.page-articles .art-track__round::after {
  content: " 轮";
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
}

.page-articles .art-track__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.35;
  color: var(--color-ink);
}

.page-articles .art-track__desc {
  margin: 0;
  max-width: 58ch;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-articles .art-track__item .mark {
  justify-self: start;
}

/* ---------- 编辑口径 ---------- */
.page-articles .art-editorial {
  background: var(--color-surface);
}

.page-articles .art-editorial__grid {
  display: grid;
  gap: var(--space-6);
}

.page-articles .art-rules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
  counter-reset: art-rule;
}

.page-articles .art-rules__item {
  display: grid;
  gap: 6px;
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
}

.page-articles .art-rules__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.page-articles .art-rules__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.35;
  color: var(--color-ink);
}

.page-articles .art-rules__item p {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-articles .art-rules__item a,
.page-articles .art-aside__text a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 45%, transparent);
}

.page-articles .art-rules__item a:hover,
.page-articles .art-rules__item a:focus-visible,
.page-articles .art-aside__text a:hover,
.page-articles .art-aside__text a:focus-visible {
  color: var(--color-focus);
  border-bottom-color: currentColor;
}

.page-articles .art-aside {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.page-articles .art-aside .art-figure {
  margin: 0;
  background: var(--color-highlight);
}

.page-articles .art-aside__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border-top: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-sm);
}

/* ---------- 中屏 ---------- */
@media (min-width: 640px) {
  .page-articles .art-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-articles .art-track {
    padding-left: var(--space-6);
    gap: var(--space-6);
  }

  .page-articles .art-track__item::before {
    left: calc(-1 * var(--space-6) - 5px);
  }

  .page-articles .art-track__item {
    grid-template-columns: 1fr auto;
    align-items: start;
    column-gap: var(--space-4);
  }

  .page-articles .art-track__round {
    grid-column: 1 / -1;
  }

  .page-articles .art-track__body {
    grid-column: 1;
  }

  .page-articles .art-track__item .mark {
    grid-column: 2;
    grid-row: 2 / span 2;
    align-self: start;
    white-space: nowrap;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-articles .art-hero__inner {
    padding-block: var(--section-y-lg) calc(var(--section-y-lg) * 0.9);
  }

  .page-articles .art-hero__lede {
    font-size: var(--text-lg);
  }

  .page-articles .art-entry {
    padding: var(--space-4) 0;
  }

  .page-articles .art-entry__title {
    font-size: var(--text-xl);
  }

  .page-articles .art-entry:nth-child(3n + 2) {
    padding-left: 8%;
  }

  .page-articles .art-entry:nth-child(3n) {
    padding-right: 14%;
  }

  .page-articles .art-editorial__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-articles .art-rules {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6) var(--space-4);
  }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-articles .art-entry,
  .page-articles .art-entry__stat {
    transition: none;
  }
}
</main>