.page-news {
  --news-tick: rgba(140, 147, 163, 0.45);
  --news-tick-soft: rgba(140, 147, 163, 0.22);
  padding-bottom: 72px;
}

.page-news .obs-head {
  padding: 26px 0 18px;
}

.page-news .obs-head h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 10px 0 14px;
  color: var(--ink);
}

.page-news .obs-lead {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-news .obs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-data);
  font-size: 12.5px;
  color: var(--graphite);
}

.page-news .obs-meta li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.page-news .obs-meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--teal);
  display: block;
  flex: none;
}

.page-news .rule-scale {
  margin: 22px 0 0;
}

.page-news .obs-section {
  margin-top: 42px;
}

.page-news .obs-section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  margin-bottom: 18px;
}

.page-news .stamp {
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1;
  color: var(--seal);
  border: 2px solid var(--seal);
  padding: 4px 6px;
  display: inline-block;
}

.page-news .obs-section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 24px;
  line-height: 1.24;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-news .obs-section-note {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

/* 筛选刻度条 */
.page-news .obs-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0 2px;
  margin: 0 0 6px;
  padding: 0;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--news-tick);
}

.page-news .obs-filter .chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 26px 12px 11px;
  border: 0;
  background: transparent;
  box-shadow: none;
  color: var(--graphite);
  font-family: var(--font-struct);
  font-size: 13px;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: color 0.18s var(--ease);
}

.page-news .obs-filter .chip::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 50%;
  width: 11px;
  height: 11px;
  margin-left: -5.5px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--paper-2);
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-news .obs-filter .chip:hover {
  color: var(--ink);
}

.page-news .obs-filter .chip[aria-pressed="true"] {
  color: var(--ink);
  font-weight: 600;
}

.page-news .obs-filter .chip[aria-pressed="true"]::before {
  background: var(--teal);
  transform: scale(1.55);
}

.page-news .obs-filter .chip.is-spring[aria-pressed="true"]::before { background: var(--spring); }
.page-news .obs-filter .chip.is-summer[aria-pressed="true"]::before { background: var(--summer); }
.page-news .obs-filter .chip.is-autumn[aria-pressed="true"]::before { background: var(--autumn); }
.page-news .obs-filter .chip.is-winter[aria-pressed="true"]::before { background: var(--winter); }

.page-news .obs-filter .chip-count {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 400;
  color: var(--rule);
  border: 1px solid var(--news-tick);
  padding: 1px 5px;
}

.page-news .obs-filter .chip[aria-pressed="true"] .chip-count {
  color: var(--ink);
  border-color: var(--ink);
}

/* 条目流 */
.page-news .obs-stream {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .entry {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "tag  no"
    "main main";
  gap: 8px 14px;
  padding: 20px 4px 20px 18px;
  border-bottom: 1px solid var(--news-tick-soft);
  transition: background-color 0.12s var(--ease);
}

.page-news .entry::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(15, 181, 166, 0.07);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.12s var(--ease);
  pointer-events: none;
}

.page-news .entry:hover::after,
.page-news .entry:focus-within::after {
  transform: scaleX(1);
}

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

.page-news .entry-band {
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  background: var(--teal);
  transition: width 0.16s var(--ease);
}

.page-news .entry:hover .entry-band {
  width: 6px;
}

.page-news .entry[data-season="version"] .entry-band { background: var(--winter); }
.page-news .entry[data-season="archive"] .entry-band { background: var(--summer); }
.page-news .entry[data-season="tips"] .entry-band { background: var(--autumn); }
.page-news .entry[data-season="data"] .entry-band { background: var(--spring); }

.page-news .entry > .entry-tag,
.page-news .entry > .entry-main,
.page-news .entry > .entry-no {
  position: relative;
  z-index: 1;
}

.page-news .entry-tag {
  grid-area: tag;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.page-news .season-tag {
  font-family: var(--font-struct);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  padding: 2px 7px;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.page-news .entry-ver {
  font-size: 11.5px;
  color: var(--rule);
}

.page-news .entry-main {
  grid-area: main;
}

.page-news .entry-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.35;
  margin: 0 0 6px;
  color: var(--ink);
}

.page-news .entry-sum {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--graphite);
}

.page-news .entry-no {
  grid-area: no;
  font-size: 13px;
  color: var(--rule);
  align-self: start;
  transition: color 0.16s var(--ease);
}

.page-news .entry:hover .entry-no {
  color: var(--teal);
}

/* 第 4 版专题 */
.page-news .obs-spotlight {
  position: relative;
  background: var(--ink);
  color: var(--paper-2);
  border: var(--border);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-news .spotlight-stamp {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: var(--ink);
}

.page-news .spotlight-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-bottom: 2px solid var(--ink);
  opacity: 0.92;
}

.page-news .spotlight-body {
  padding: 24px 20px 26px;
}

.page-news .spotlight-eyebrow {
  color: var(--teal);
  margin: 0 0 10px;
}

.page-news .obs-spotlight h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--paper-2);
}

.page-news .obs-spotlight p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(251, 248, 241, 0.84);
}

.page-news .spotlight-points {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
  border-top: 1px solid rgba(251, 248, 241, 0.18);
  padding-top: 16px;
}

.page-news .spotlight-points li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(251, 248, 241, 0.9);
}

.page-news .spotlight-points .data-num {
  color: var(--teal);
  font-size: 12px;
  padding-top: 3px;
}

.page-news .spotlight-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 归档路径对照 */
.page-news .path-grid {
  display: grid;
  gap: 14px;
  margin-bottom: 22px;
}

.page-news .path-card {
  border: 2px solid var(--ink);
  background: var(--paper-2);
  padding: 16px 16px 14px;
}

.page-news .path-card--old {
  background: var(--paper);
}

.page-news .path-card--new {
  box-shadow: var(--shadow-soft);
  border-left: 6px solid var(--teal);
}

.page-news .path-badge {
  margin: 0 0 12px;
  font-family: var(--font-struct);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  display: inline-block;
  border-bottom: 2px solid var(--teal);
  padding-bottom: 3px;
}

.page-news .path-card--old .path-badge {
  border-bottom-color: var(--rule);
  color: var(--graphite);
}

.page-news .path-steps {
  counter-reset: pstep;
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-news .path-step {
  counter-increment: pstep;
  position: relative;
  padding-left: 34px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--graphite);
}

.page-news .path-step::before {
  content: counter(pstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: -1px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  font-family: var(--font-data);
  font-size: 11px;
  background: var(--ink);
  color: var(--paper-2);
}

.page-news .path-card--new .path-step::before {
  background: var(--teal);
  color: var(--ink);
}

.page-news .path-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--rule);
}

.page-news .path-arrow {
  display: grid;
  place-items: center;
  font-family: var(--font-data);
  font-size: 20px;
  color: var(--teal);
  transform: rotate(90deg);
  line-height: 1;
}

.page-news .path-figure {
  margin: 0 0 18px;
}

.page-news .media-frame {
  display: block;
  border: 2px solid var(--ink);
  background: var(--paper-2);
  overflow: hidden;
}

.page-news .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .media-frame__caption {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--graphite);
  padding: 10px 14px;
  border-top: 1px solid var(--news-tick);
  background: var(--paper-2);
}

.page-news .path-tail {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
  padding-left: 14px;
  border-left: 3px solid var(--autumn);
}

/* 技巧系列 */
.page-news .tips-figure {
  margin: 0 0 20px;
}

.page-news .tips-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-news .tip {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  padding: 16px 0 0;
  border-top: 1px solid var(--news-tick);
}

.page-news .tip-no {
  font-size: 22px;
  line-height: 1;
  color: var(--autumn);
}

.page-news .tip-body h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.35;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-news .tip-body p {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

/* 订阅笔记 */
.page-news .note-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 2px solid var(--ink);
}

.page-news .note {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--news-tick-soft);
}

.page-news .note-key {
  font-family: var(--font-struct);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.page-news .note p {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-news .notes-tail {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--graphite);
  max-width: 64ch;
}

.page-news .notes-tail a {
  color: var(--ink);
  border-bottom: 2px solid var(--teal);
  text-decoration: none;
}

.page-news .notes-tail a:hover {
  background: rgba(15, 181, 166, 0.14);
}

/* 收尾 */
.page-news .obs-closing {
  margin-top: 48px;
  border-top: 2px solid var(--ink);
  padding-top: 24px;
  display: grid;
  gap: 20px;
}

.page-news .closing-media {
  margin: 0;
  border-width: 0 0 2px 0;
}

.page-news .closing-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.3;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-news .closing-body p {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-news .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 640px) {
  .page-news .obs-head h1 {
    font-size: 40px;
  }
  .page-news .obs-section-head h2 {
    font-size: 27px;
  }
  .page-news .obs-spotlight h2 {
    font-size: 28px;
  }
  .page-news .note {
    grid-template-columns: 92px 1fr;
    gap: 16px;
    align-items: baseline;
  }
  .page-news .path-grid {
    grid-template-columns: 1fr;
  }
  .page-news .closing-body h2 {
    font-size: 25px;
  }
}

@media (min-width: 820px) {
  .page-news .entry {
    grid-template-columns: 132px minmax(0, 1fr) 56px;
    grid-template-areas: "tag main no";
    gap: 6px 22px;
    padding: 22px 6px 22px 20px;
    align-items: start;
  }
  .page-news .entry-tag {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-top: 3px;
  }
  .page-news .entry-no {
    text-align: right;
  }
  .page-news .entry:nth-child(even) {
    margin-left: 24px;
  }
  .page-news .path-grid {
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 18px;
  }
  .page-news .path-arrow {
    transform: none;
    font-size: 24px;
  }
  .page-news .obs-spotlight {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: stretch;
  }
  .page-news .spotlight-media {
    border-right: 2px solid var(--ink);
  }
  .page-news .spotlight-media img {
    height: 100%;
    border-bottom: 0;
  }
  .page-news .spotlight-body {
    padding: 34px 30px;
  }
  .page-news .obs-closing {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 28px;
  }
  .page-news .closing-media {
    border-width: 2px;
  }
  .page-news .tips-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .page-news .tip {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (min-width: 1080px) {
  .page-news .obs-head {
    padding-top: 34px;
  }
  .page-news .obs-head h1 {
    font-size: 46px;
  }
  .page-news .obs-lead {
    font-size: 16px;
  }
  .page-news .obs-section {
    margin-top: 56px;
  }
  .page-news .obs-filter .chip {
    padding: 28px 16px 12px;
  }
  .page-news .entry:nth-child(even) {
    margin-left: 44px;
  }
  .page-news .entry-title {
    font-size: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .entry::after,
  .page-news .entry-band,
  .page-news .obs-filter .chip::before {
    transition: none;
  }
  .page-news .entry:hover::after,
  .page-news .entry:focus-within::after {
    transform: scaleX(1);
  }
}