/* components.css — 分类页 / 详情页专用组件
   只消费 tokens.css 的设计变量；颜色、字号、圆角一律 var(--…)，不写字面量色值。
   首页组件（.hero .cat-grid .feature-row .path-row .parts-panel .editorial-note）不复用到这里。 */

/* ---------------------------------------------------------------- 面包屑 */
.crumb {
  padding-top: 26px;
  font-size: var(--fs-9);
  color: var(--ink-soft);
}
.crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.crumb li { display: flex; align-items: center; gap: 9px; }
.crumb li + li::before {
  content: "/";
  color: var(--line-strong);
}
.crumb a { transition: color .2s; }
.crumb a:hover,
.crumb a:focus-visible { color: var(--accent); }
.crumb [aria-current="page"] { color: var(--ink); }

/* ------------------------------------------------------------ 分类页头部 */
.page-hero {
  position: relative;
  margin-top: 18px;
  padding: 54px 0 46px;
  overflow: hidden;
  background: var(--bg-elevated);
  color: var(--ink-invert);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../images/cat-su.jpg") right center / cover no-repeat;
  opacity: .46;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--bg-elevated) 6%, rgba(22,23,15,.96) 36%, rgba(22,23,15,.68) 66%, rgba(22,23,15,.4) 100%);
}
.page-hero .wrap { position: relative; z-index: 1; }
.page-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 15px;
  color: var(--muted);
  font-size: var(--fs-2);
  letter-spacing: .28em;
  text-transform: uppercase;
}
.page-eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--line-strong);
}
.page-hero h1 {
  max-width: 760px;
  font-family: var(--serif);
  font-size: clamp(42px, 4.4vw, 62px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: .03em;
}
.page-lead {
  max-width: 660px;
  margin-top: 18px;
  color: var(--ink-invert);
  font-size: var(--fs-13);
  line-height: 1.95;
  opacity: .92;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 26px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(247, 241, 228, .18);
  color: var(--footer-soft);
  font-size: var(--fs-3);
  letter-spacing: .08em;
}
.hero-meta b {
  color: var(--ink-invert);
  font-family: var(--serif);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: .04em;
}

/* ---------------------------------------------------------- 筛选与排序条 */
.list-toolbar {
  position: sticky;
  top: 70px;
  z-index: 30;
  background: rgba(250, 245, 236, .97);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.toolbar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
  padding: 14px 0;
}
.toolbar-label {
  color: var(--ink-soft);
  font-size: var(--fs-2);
  letter-spacing: .14em;
  white-space: nowrap;
}
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: transparent;
  color: var(--ink-soft);
  font-size: var(--fs-7);
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.chip em {
  font-style: normal;
  color: var(--ink-soft);
  font-size: var(--fs-3);
}
.chip:hover,
.chip:focus-visible { border-color: var(--line-strong); color: var(--ink); }
.chip[aria-pressed="true"] {
  background: var(--green);
  border-color: var(--green);
  color: var(--ink-invert);
  font-weight: 600;
}
.chip[aria-pressed="true"] em { color: var(--footer-soft); }

.toolbar-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}
.sort-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.sort-wrap::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  width: 7px;
  height: 7px;
  margin-top: -5px;
  border-right: 1.4px solid var(--ink-soft);
  border-bottom: 1.4px solid var(--ink-soft);
  transform: rotate(45deg);
  pointer-events: none;
}
.sort-select {
  min-height: 36px;
  padding: 0 32px 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: var(--fs-7);
  cursor: pointer;
  appearance: none;
}
.sort-select:hover,
.sort-select:focus-visible { border-color: var(--line-strong); }
.result-count {
  color: var(--ink-soft);
  font-size: var(--fs-7);
  white-space: nowrap;
}
.result-count b { color: var(--ink); font-weight: 600; }

/* -------------------------------------------------------------- 列表主体 */
.list-section { padding: 38px 0 20px; }
.list-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
}
.list-heading h2 {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--serif);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: .03em;
}
.list-heading h2::before {
  content: "";
  width: 5px;
  height: 24px;
  background: var(--accent);
  flex: none;
}
.list-heading > p { color: var(--ink-soft); font-size: var(--fs-7); }
.list-heading .result-count { margin-left: auto; }
.list-note {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: var(--fs-4);
  letter-spacing: .02em;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.post-thumb {
  display: block;
  margin: -22px -22px 16px;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--surface-sand);
}
.post-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 22px 22px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: box-shadow .2s, transform .2s, border-color .2s;
}
.post-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}
.post-index {
  color: var(--line-strong);
  font-family: var(--serif);
  font-size: var(--fs-15);
  font-weight: 700;
  letter-spacing: .06em;
}
.post-tag {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 14px;
  padding: 3px 9px;
  background: var(--surface-sand);
  color: var(--green);
  font-size: var(--fs-2);
  letter-spacing: .04em;
}
.post-card h3 {
  margin-top: 10px;
  font-family: var(--serif);
  font-size: var(--fs-15);
  font-weight: 700;
  line-height: 1.5;
}
.post-card h3 a { transition: color .2s; }
.post-card h3 a:hover,
.post-card h3 a:focus-visible { color: var(--accent); }
.post-card p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: var(--fs-7);
  line-height: 1.8;
}
.post-meta {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: var(--fs-2);
  letter-spacing: .04em;
}
.post-grid > .post-card[hidden] { display: none; }
.empty-state {
  margin-top: 26px;
  padding: 30px;
  border: 1px dashed var(--line-strong);
  color: var(--ink-soft);
  text-align: center;
}

/* ------------------------------------------------------------ 分类说明区 */
.list-description {
  margin-top: 18px;
  padding: 44px 0 46px;
  background: var(--surface-sand);
}
.list-description .wrap {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 40px 56px;
  align-items: start;
}
.list-description h2 {
  font-family: var(--serif);
  font-size: var(--fs-19);
  font-weight: 700;
  line-height: 1.4;
}
.list-description p {
  max-width: 880px;
  color: var(--surface-alt);
  font-size: var(--fs-13);
  line-height: 2;
}

/* ------------------------------------------------------------ 阅读顺序区 */
.reading-path { padding: 44px 0 54px; }
.reading-path .wrap {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 40px 56px;
  align-items: start;
}
.reading-path h2 {
  font-family: var(--serif);
  font-size: var(--fs-19);
  font-weight: 700;
}
.reading-path p {
  max-width: 820px;
  color: var(--ink-soft);
  font-size: var(--fs-13);
  line-height: 2;
}
.reading-path strong { color: var(--ink); font-weight: 600; }

/* -------------------------------------------------------------- 详情页头 */
.article-head {
  padding: 30px 0 0;
}
.article-cat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 11px;
  background: var(--green);
  color: var(--ink-invert);
  font-size: var(--fs-2);
  letter-spacing: .06em;
}
.article-head h1 {
  max-width: 900px;
  margin-top: 16px;
  font-family: var(--serif);
  font-size: clamp(34px, 3.4vw, 48px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .02em;
}
.article-lead {
  max-width: 800px;
  margin-top: 16px;
  color: var(--ink-soft);
  font-size: var(--fs-13);
  line-height: 1.95;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 18px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: var(--fs-2);
  letter-spacing: .04em;
}

/* --------------------------------------------------------------- 三点结论 */
.key-points {
  margin-top: 26px;
  padding: 22px 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
}
.key-points h2 {
  font-family: var(--serif);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: .04em;
}
.key-points ul {
  display: grid;
  gap: 7px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}
.key-points li {
  position: relative;
  padding-left: 16px;
  color: var(--surface-alt);
  font-size: var(--fs-7);
  line-height: 1.8;
}
.key-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .72em;
  width: 4px;
  height: 4px;
  background: var(--accent);
}

/* ------------------------------------------------------- 正文 + 目录布局 */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 244px;
  gap: 56px;
  align-items: start;
  padding: 34px 0 56px;
}
.article {
  max-width: 760px;
  color: var(--ink);
}
.article-section {
  padding: 26px 0 4px;
  scroll-margin-top: 96px;
}
.article-section + .article-section { border-top: 1px solid var(--line); }
.article-section h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--serif);
  font-size: var(--fs-19);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: .02em;
}
.article-section h2 .num {
  color: var(--accent);
  font-size: var(--fs-4);
  letter-spacing: .12em;
}
.article-section p {
  margin-top: 14px;
  font-size: var(--fs-13);
  line-height: 2;
}
.article-note {
  margin-top: 18px;
  padding: 16px 20px;
  background: var(--surface-sand);
  color: var(--surface-alt);
  font-size: var(--fs-7);
  line-height: 1.9;
}
.article-note strong { color: var(--ink); }

/* ------------------------------------------------------------------ 目录 */
.toc {
  position: sticky;
  top: 94px;
  padding: 20px 0 0;
  border-top: 2px solid var(--ink);
}
.toc h2 {
  font-family: var(--serif);
  font-size: var(--fs-14);
  font-weight: 700;
}
.toc ol {
  display: grid;
  gap: 2px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: toc;
}
.toc li { counter-increment: toc; }
.toc a {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 4px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: var(--fs-4);
  line-height: 1.55;
  transition: color .2s;
}
.toc a::before {
  content: counter(toc, decimal-leading-zero);
  color: var(--line-strong);
  font-family: var(--serif);
  font-size: var(--fs-2);
}
.toc a:hover,
.toc a:focus-visible,
.toc a.is-active { color: var(--accent); }
.toc a.is-active::before { color: var(--accent); }

/* -------------------------------------------------------------- 相关推荐 */
.related {
  padding: 44px 0 56px;
  border-top: 1px solid var(--line);
}
.related h2 {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--serif);
  font-size: var(--fs-20);
  font-weight: 700;
}
.related h2::before {
  content: "";
  width: 5px;
  height: 24px;
  background: var(--accent);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.related-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}
.related-card::before {
  content: attr(data-cat);
  color: var(--green);
  font-size: var(--fs-2);
  letter-spacing: .06em;
}
.related-card strong {
  font-family: var(--serif);
  font-size: var(--fs-14);
  font-weight: 700;
  line-height: 1.55;
}
.related-card::after {
  content: "阅读 →";
  margin-top: auto;
  color: var(--accent);
  font-size: var(--fs-3);
  letter-spacing: .04em;
}
.related-card:hover::after { color: var(--accent-dark); }

/* --------------------------------------------------------------- 响应式 */
@media (max-width: 1080px) {
  .post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-layout { grid-template-columns: 1fr; gap: 26px; }
  .toc {
    position: static;
    order: -1;
    padding: 16px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .toc ol {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 22px;
  }
  .list-description .wrap,
  .reading-path .wrap { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 780px) {
  .page-hero { padding: 42px 0 38px; }
  .page-hero::before { opacity: .36; }
  .page-lead { font-size: var(--fs-11); }
  .stats { gap: 26px; }
  .list-toolbar { top: 62px; }
  .toolbar-inner { gap: 10px; }
  .toolbar-tools { margin-left: 0; width: 100%; justify-content: space-between; }
  .post-grid { grid-template-columns: 1fr; }
  .list-description { padding: 34px 0; }
  .list-description p,
  .reading-path p { font-size: var(--fs-11); }
  .article-head h1 { font-size: var(--fs-19); }
  .key-points { padding: 18px 18px; }
  .article-section h2 { font-size: var(--fs-18); }
  .article-section p { font-size: var(--fs-11); }
  .related-grid { grid-template-columns: 1fr; }
  .toc ol { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .toc ol { grid-template-columns: 1fr; }
  .post-card { padding: 18px; }
}

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

/* ---------- 数据对接补充 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  text-decoration: none;
}
.chip.is-active,
.chip[aria-pressed="true"] {
  background: var(--brand, var(--accent));
  border-color: var(--brand, var(--accent));
  color: #fff;
}
.section-more {
  font-size: 13px;
  color: var(--brand, var(--accent));
  text-decoration: none;
  white-space: nowrap;
}
.section-more:hover { text-decoration: underline; }
.list-heading .result-count { margin-left: auto; }
.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 36px 0 12px;
}
.page-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  color: var(--ink);
  font-size: 13px;
  text-decoration: none;
}
.page-num:hover,
.page-num:focus-visible { border-color: var(--brand, var(--accent)); color: var(--brand, var(--accent)); }
.page-num.is-active { background: var(--brand, var(--accent)); border-color: var(--brand, var(--accent)); color: #fff; }
.page-gap { display: inline-flex; align-items: center; padding: 0 4px; color: var(--ink-soft); }
.article-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.article-nav-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface, #f7f1ea);
  color: var(--ink);
  text-decoration: none;
}
.article-nav-item span { font-size: 12px; color: var(--ink-soft); }
.article-nav-item strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 15px; }
.article-nav-item:hover { border-color: var(--brand, var(--accent)); color: var(--brand, var(--accent)); }
.article-nav-next { text-align: right; }
.section-figure { margin: 18px 0; }
.section-figure img,
.article img { max-width: 100%; height: auto; border-radius: 4px; }
@media (max-width: 700px) {
  .article-nav { grid-template-columns: 1fr; }
  .article-nav-next { text-align: left; }
}