/* ============================================================
   文档更新页 · /articles/
   页面作用域：.page-news
   ============================================================ */

.page-news {
  --news-rule: rgba(200, 150, 62, 0.3);
  --news-hair: rgba(36, 69, 95, 0.85);
  --news-glass: rgba(36, 69, 95, 0.42);
  --news-body: rgba(245, 241, 232, 0.76);
  display: block;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  overflow-x: clip;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-news *,
.page-news *::before,
.page-news *::after {
  box-sizing: border-box;
}

.page-news [hidden] {
  display: none !important;
}

.page-news .wrap {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1.1rem, 5vw, 3rem);
}

.page-news .text-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.page-news .section {
  padding-block: clamp(2.25rem, 6vw, 4.5rem) 0;
}

/* ---------- 首屏 ---------- */

.page-news .news-mast {
  padding-top: clamp(1.25rem, 3vw, 2.25rem);
  padding-bottom: clamp(2rem, 6vw, 4.5rem);
}

.page-news .news-mast__split {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(1.75rem, 5vw, 3.5rem);
}

.page-news .news-mast__eyebrow {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-news .news-mast__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 9vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-news .news-mast__lede {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  max-width: 40rem;
  font-size: clamp(1rem, 2.2vw, 1.125rem);
  line-height: 1.9;
  color: var(--news-body);
}

.page-news .news-mast__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-news .news-mast__side {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin: 0;
  padding-left: 1rem;
  border-left: 1px solid var(--news-rule);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-news .news-mast__note {
  margin: 0;
}

.page-news .news-mast__note--amber {
  color: var(--amber);
}

@media (min-width: 900px) {
  .page-news .news-mast__split {
    grid-template-columns: minmax(0, 1fr) clamp(170px, 20vw, 220px);
    align-items: start;
  }

  .page-news .news-mast__side {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: flex-start;
    justify-self: end;
    gap: 1.5rem;
    padding-left: 0;
    padding-top: 1.25rem;
    border-left: 0;
    border-top: 1px solid var(--news-rule);
  }

  .page-news .news-mast__note {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.22em;
  }
}

/* ---------- 章节标题构件 ---------- */

.page-news .news-head {
  display: grid;
  gap: 0.75rem 1.5rem;
  border-top: 1px solid var(--news-rule);
  padding-top: clamp(1rem, 2.5vw, 1.5rem);
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

@media (min-width: 820px) {
  .page-news .news-head {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    align-items: start;
  }
}

.page-news .news-head__num {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-news .news-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4.2vw, 2.125rem);
  font-weight: 700;
  line-height: 1.34;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-news .news-head__lede {
  margin: 0.75rem 0 0;
  max-width: 42rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--news-body);
}

/* ---------- 图注与图片 ---------- */

.page-news .figure {
  margin: 0 0 clamp(1.75rem, 4vw, 3rem);
}

.page-news .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--news-hair);
  background: var(--ink-800);
}

.page-news .figure__cap {
  margin-top: 0.6rem;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-news .news-item__figure {
  margin: 0.75rem 0 0;
}

/* ---------- 01 标签分类 ---------- */

.page-news .news-cats__grid {
  display: grid;
  gap: 1px;
  background: var(--news-hair);
  border: 1px solid var(--news-hair);
}

@media (min-width: 720px) {
  .page-news .news-cats__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-news .news-cat {
  display: grid;
  align-content: start;
  gap: 0.55rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--ink-900);
}

.page-news .news-cat__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.page-news .news-cat__line {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-news .news-cat__title {
  margin: 0.2rem 0 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--paper);
}

.page-news .news-cat__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--news-body);
}

/* ---------- 标签与状态 ---------- */

.page-news .tag {
  display: inline-block;
  padding: 0.15rem 0.62rem;
  border: 1px solid var(--news-rule);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
  white-space: nowrap;
}

.page-news .tag--amber {
  background: rgba(200, 150, 62, 0.14);
  border-color: var(--amber);
  color: var(--amber-bright);
}

.page-news .status {
  display: inline-flex;
  align-items: center;
  gap: 0.36rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-news .status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: currentColor;
  flex: none;
}

.page-news .status--new {
  color: var(--celadon);
}

/* ---------- 02 条目列表 ---------- */

.page-news .news-latest__layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

@media (min-width: 900px) {
  .page-news .news-latest__layout {
    grid-template-columns: clamp(190px, 22vw, 240px) minmax(0, 1fr);
    align-items: start;
  }
}

.page-news .news-latest__side {
  display: grid;
  gap: 1.75rem;
  align-content: start;
}

@media (min-width: 900px) {
  .page-news .news-latest__side {
    position: sticky;
    top: calc(var(--topbar-h) + 1.5rem);
  }
}

.page-news .news-filter__field {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--news-rule);
}

.page-news .news-filter__input {
  width: 100%;
  padding: 0.6rem 0;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
}

.page-news .news-filter__input::placeholder {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-news .news-filter__input:focus-visible {
  box-shadow: inset 0 -2px 0 0 var(--amber-bright);
}

.page-news .news-filter__count {
  margin: 0.75rem 0 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-news .news-legend {
  display: grid;
  gap: 0.55rem;
  border-top: 1px solid var(--news-hair);
  padding-top: 1.25rem;
}

.page-news .news-legend .legend__item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .legend__key {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  border: 1px solid var(--muted);
  flex: none;
}

.page-news .legend__key--amber {
  background: var(--amber);
  border-color: var(--amber);
}

.page-news .legend__key--open {
  background: var(--celadon);
  border-color: var(--celadon);
}

.page-news .legend__key--plain {
  background: transparent;
  border-color: var(--muted);
}

.page-news .news-toc {
  border-top: 1px solid var(--news-hair);
  padding-top: 1.25rem;
}

.page-news .news-toc .toc__label {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-news .news-toc .toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.3rem;
}

.page-news .news-toc .toc__link {
  display: block;
  padding: 0.25rem 0 0.25rem 0.7rem;
  border-left: 2px solid transparent;
  color: rgba(245, 241, 232, 0.7);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-news .news-toc .toc__link:hover,
.page-news .news-toc .toc__link:focus-visible {
  color: var(--amber-bright);
  border-left-color: var(--amber);
}

.page-news .news-stream {
  display: grid;
  border-top: 1px solid var(--news-hair);
  min-width: 0;
}

.page-news .news-item {
  display: grid;
  gap: 0.5rem 1.25rem;
  padding: clamp(1.1rem, 2.6vw, 1.75rem) 0;
  border-bottom: 1px solid var(--news-hair);
  min-width: 0;
}

@media (min-width: 680px) {
  .page-news .news-item {
    grid-template-columns: 5.5rem minmax(0, 1fr);
  }
}

.page-news .news-item__time {
  margin: 0;
  padding-top: 0.35rem;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-news .news-item__body {
  display: grid;
  gap: 0.55rem;
  min-width: 0;
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

.page-news .news-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .news-item__text {
  margin: 0;
  max-width: 44rem;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--news-body);
}

.page-news .news-item__link,
.page-news .news-feedback__link {
  justify-self: start;
  margin-top: 0.15rem;
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(200, 150, 62, 0.42);
  color: var(--amber);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-news .news-item__link:hover,
.page-news .news-item__link:focus-visible,
.page-news .news-feedback__link:hover,
.page-news .news-feedback__link:focus-visible {
  color: var(--amber-bright);
  border-bottom-color: var(--amber-bright);
}

.page-news .news-item--pinned {
  margin-block: 0.85rem;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  background: linear-gradient(105deg, var(--news-glass), rgba(14, 34, 51, 0.35));
  border-left: 2px solid var(--amber);
  border-bottom: 1px solid var(--news-hair);
  backdrop-filter: blur(6px);
}

.page-news .news-item--pinned .news-item__title {
  font-size: clamp(1.3rem, 4vw, 1.85rem);
  font-weight: 700;
  line-height: 1.36;
}

.page-news .news-stream__empty {
  margin: 0;
  padding: 2rem 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* ---------- 03 专题 ---------- */

.page-news .news-topics__grid {
  display: grid;
  gap: 1px;
  background: var(--news-hair);
  border: 1px solid var(--news-hair);
}

@media (min-width: 900px) {
  .page-news .news-topics__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .news-topic {
  display: grid;
  align-content: start;
  gap: 0.5rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--ink-900);
  transition: background 200ms ease;
}

.page-news .news-topic:hover {
  background: var(--ink-800);
}

.page-news .news-topic__num {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-news .news-topic__title {
  margin: 0.25rem 0 0;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--paper);
}

.page-news .news-topic__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--news-body);
}

.page-news .news-topic__cadence {
  margin: 0.5rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--news-hair);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--celadon);
}

/* ---------- 04 改版记录 ---------- */

.page-news .news-rev__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--news-hair);
}

.page-news .news-rev {
  display: grid;
  gap: 0.5rem 1.5rem;
  padding: clamp(1.25rem, 3vw, 1.75rem) 0;
  border-bottom: 1px solid var(--news-hair);
}

@media (min-width: 760px) {
  .page-news .news-rev {
    grid-template-columns: 4rem minmax(0, 1fr);
  }
}

.page-news .news-rev__num {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-news .news-rev__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.25rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .news-rev__body p {
  margin: 0.5rem 0 0;
  max-width: 42rem;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--news-body);
}

/* ---------- 05 订阅与反馈 ---------- */

.page-news .news-feedback__grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 820px) {
  .page-news .news-feedback__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-news .news-feedback__card {
  display: grid;
  align-content: start;
  gap: 0.65rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--ink-800);
  border: 1px solid var(--news-hair);
  border-top: 2px solid var(--amber);
}

.page-news .news-feedback__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--paper);
}

.page-news .news-feedback__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--news-body);
}

.page-news .news-feedback__mail {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--paper);
  word-break: break-all;
}

.page-news .news-foot-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--news-rule);
}

.page-news .news-foot-line__link {
  font-size: 0.9rem;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-news .news-foot-line__link:hover,
.page-news .news-foot-line__link:focus-visible {
  color: var(--amber-bright);
  border-bottom-color: var(--amber-bright);
}

/* ---------- 返回顶部 ---------- */

.page-news .to-top {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}