.page-news {
  --obs-space: clamp(1rem, 3vw, 2rem);
  --obs-sticky-top: 5.5rem;
  background: var(--void);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-news img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 头部拼贴 ---------- */
.page-news .obs-mast {
  position: relative;
  padding: clamp(1rem, 2.5vw, 1.8rem) 0 clamp(2rem, 5vw, 3.4rem);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(36, 245, 210, 0.13), transparent 62%),
    radial-gradient(90% 70% at 100% 10%, rgba(255, 122, 26, 0.08), transparent 60%),
    linear-gradient(180deg, var(--void-deep), var(--void) 70%);
}

.page-news .obs-mast__grid {
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.4rem);
  margin-top: clamp(1.2rem, 3vw, 2rem);
}

.page-news .obs-mast__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 6vw, 3.6rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin: 0.55rem 0 1rem;
  max-width: 22ch;
}

.page-news .obs-mast__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-news .obs-mast__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: clamp(1.1rem, 3vw, 1.7rem);
}

.page-news .obs-figure {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-news .obs-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-news .obs-figure--cut {
  clip-path: polygon(0 0, 100% 0, 100% 84%, 88% 100%, 0 100%);
}

.page-news .obs-figure--tall img {
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-news .obs-mast__stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.2rem;
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--line-strong);
}

.page-news .obs-mast__stats li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-news .obs-stat__value {
  font-family: var(--font-num);
  font-weight: 900;
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-news .obs-stat__label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--stone);
}

/* ---------- 主体：粘性目录 + 长列表 ---------- */
.page-news .obs-body {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  padding-block: clamp(2rem, 5vw, 3.2rem) clamp(3rem, 7vw, 5rem);
}

.page-news .obs-side__sticky {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.page-news .obs-side__nav {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.4rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-news .obs-side__nav a {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ink-soft);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-news .obs-side__nav a:hover,
.page-news .obs-side__nav a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

.page-news .obs-side__cats {
  list-style: none;
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--stone);
}

.page-news .obs-side__cats .cmd-tag {
  margin-right: 0.45rem;
}

/* ---------- 章节 ---------- */
.page-news .obs-sec {
  padding-block: clamp(1.9rem, 4.2vw, 2.9rem);
  border-top: 1px solid var(--line);
}

.page-news .obs-sec--first {
  padding-top: 0;
  border-top: 0;
}

.page-news .obs-h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.6vw, 2.05rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 0.35rem 0 0.7rem;
  max-width: 28ch;
}

.page-news .obs-sec__lead {
  margin: 0;
  max-width: 66ch;
  color: var(--ink-soft);
  line-height: 1.72;
  font-size: 0.96rem;
}

/* ---------- 列表条目 ---------- */
.page-news .obs-list {
  margin-top: clamp(1.2rem, 3vw, 1.9rem);
}

.page-news .obs-item {
  display: grid;
  gap: 0.55rem;
  padding: clamp(1.1rem, 2.6vw, 1.6rem) 0;
  border-bottom: 1px solid var(--line);
}

.page-news .obs-list .obs-item:first-child {
  border-top: 1px solid var(--line);
}

.page-news .obs-item__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.page-news .obs-item__no {
  font-family: var(--font-num);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-news .obs-item__meta {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-news .obs-item__title {
  margin: 0;
  font-size: clamp(1.02rem, 2.3vw, 1.2rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-news .obs-item__text {
  margin: 0;
  max-width: 68ch;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-news .obs-item__link {
  justify-self: start;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 224, 163, 0.35);
}

.page-news .obs-item__link:hover,
.page-news .obs-item__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

/* ---------- 图文分栏 ---------- */
.page-news .obs-split {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
}

.page-news .obs-points {
  list-style: none;
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
}

.page-news .obs-points li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-news .obs-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 9px;
  height: 2px;
  background: var(--cyan);
}

.page-news .obs-points--compact li {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* ---------- 资料下载块 ---------- */
.page-news .obs-dl {
  display: grid;
  gap: 1.1rem;
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
  padding: clamp(1rem, 3vw, 1.6rem);
  background: var(--panel);
  border-left: 3px solid var(--track);
}

.page-news .obs-dl__figure {
  margin: 0;
}

.page-news .obs-dl__figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-news .obs-dl__body .obs-item__title {
  margin: 0.35rem 0 0.8rem;
}

/* ---------- 节奏时间轴 ---------- */
.page-news .obs-cadence {
  list-style: none;
  display: grid;
  gap: 1.3rem;
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  padding: 0;
}

.page-news .obs-cadence__item {
  position: relative;
  padding-left: 1.7rem;
}

.page-news .obs-cadence__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.42rem;
  width: 9px;
  height: 9px;
  transform: rotate(45deg);
  background: var(--cyan);
}

.page-news .obs-cadence__item::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 1.3rem;
  bottom: -1.3rem;
  width: 1px;
  background: var(--line-strong);
}

.page-news .obs-cadence__item:last-child::after {
  display: none;
}

.page-news .obs-cadence__k {
  margin: 0 0 0.3rem;
  font-family: var(--font-num);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--track);
}

.page-news .obs-cadence__item .obs-item__text {
  margin-top: 0.4rem;
}

/* ---------- 收口 ---------- */
.page-news .obs-follow {
  padding: clamp(1.3rem, 4vw, 2.4rem);
  background:
    linear-gradient(135deg, rgba(36, 245, 210, 0.12), rgba(255, 122, 26, 0.07) 70%),
    var(--panel);
  border: 1px solid var(--line-strong);
}

.page-news .obs-follow__note {
  margin: 1.1rem 0 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--stone);
}

.page-news .obs-follow__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(36, 245, 210, 0.4);
}

.page-news .obs-backtop {
  margin: 1.4rem 0 0;
  text-align: right;
}

.page-news .obs-backtop a {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

.page-news .obs-backtop a:hover,
.page-news .obs-backtop a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 720px) {
  .page-news .obs-mast__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .obs-dl {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: center;
  }
}

/* ---------- 桌面：非对称双栏 + 粘性目录 ---------- */
@media (min-width: 960px) {
  .page-news .obs-mast__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
    gap: clamp(1.8rem, 4vw, 3.5rem);
  }

  .page-news .obs-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-news .obs-side__sticky {
    position: sticky;
    top: var(--obs-sticky-top);
    gap: 1.3rem;
  }

  .page-news .obs-side__nav {
    flex-direction: column;
    overflow: visible;
    padding: 0;
    gap: 0.4rem;
  }

  .page-news .obs-side__nav a {
    display: block;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    padding: 0.35rem 0 0.35rem 0.8rem;
    white-space: normal;
  }

  .page-news .obs-side__nav a:hover,
  .page-news .obs-side__nav a:focus-visible {
    border-left-color: var(--cyan);
  }

  .page-news .obs-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-news .obs-split--reverse {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-news .obs-item {
    grid-template-columns: 1fr;
  }

  .page-news .obs-cadence {
    gap: 1.6rem;
  }
}

@media (min-width: 1200px) {
  .page-news .obs-mast__title {
    max-width: 24ch;
  }

  .page-news .obs-sec__lead {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .obs-side__nav a,
  .page-news .obs-item__link,
  .page-news .obs-backtop a {
    transition: none;
  }
}
<<<END>>>