.page-news {
  --obs-rail: 13.5rem;
  --obs-gap: clamp(28px, 4vw, 60px);
  --obs-tag-version: #F0A63C;
  --obs-tag-migration: #E2603F;
  --obs-tag-season: #7CF29B;
  --obs-tag-tip: #93A6B4;
  display: block;
}

/* ---------- 页首 ---------- */
.page-news .obs-intro {
  position: relative;
  padding: clamp(30px, 5vw, 68px) 0 clamp(22px, 3vw, 38px);
  border-bottom: 1px solid var(--c-line);
}

.page-news .obs-intro::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: clamp(64px, 14vw, 180px);
  height: 2px;
  background: var(--c-gold);
}

.page-news .obs-intro__code {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--step-note);
  letter-spacing: 0.28em;
  color: var(--c-gold);
  text-transform: uppercase;
}

.page-news .obs-intro__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(42px, 9vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--c-frost);
}

.page-news .obs-intro__lead {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 42ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: var(--c-frost);
}

.page-news .obs-intro__aside {
  margin: 12px 0 0;
  font-size: var(--step-note);
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 赛季刻度 ---------- */
.page-news .obs-scale {
  display: flex;
  margin: clamp(20px, 3vw, 32px) 0 clamp(26px, 4vw, 46px);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-news .obs-scale::-webkit-scrollbar {
  display: none;
}

.page-news .obs-scale__node {
  position: relative;
  flex: 1 1 0;
  min-width: 104px;
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: var(--step-note);
  letter-spacing: 0.06em;
  color: var(--c-mist);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

.page-news .obs-scale__node::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--c-line);
}

.page-news .obs-scale__dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 11px;
  height: 11px;
  border: 1px solid var(--c-neon);
  border-radius: 50%;
  background: var(--c-midnight);
  transition: background-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-news .obs-scale__node:hover .obs-scale__dot,
.page-news .obs-scale__node:focus-visible .obs-scale__dot {
  background: var(--c-neon);
  box-shadow: 0 0 0 5px rgba(124, 242, 155, 0.14);
  transform: scale(1.12);
}

.page-news .obs-scale__node:hover,
.page-news .obs-scale__node:focus-visible {
  color: var(--c-frost);
}

/* ---------- 主布局 ---------- */
.page-news .obs-layout {
  display: block;
}

.page-news .obs-rail {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-news .obs-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--step-note);
  letter-spacing: 0.2em;
  color: var(--c-mist);
}

.page-news .obs-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-news .obs-rail__list::-webkit-scrollbar {
  display: none;
}

.page-news .obs-rail__link {
  display: inline-block;
  flex: 0 0 auto;
  padding: 7px 13px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--c-mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.page-news .obs-rail__link:hover,
.page-news .obs-rail__link:focus-visible {
  color: var(--c-gold);
  border-color: var(--c-gold-deep);
  background: rgba(240, 166, 60, 0.08);
}

.page-news .obs-rail__note {
  display: none;
  margin: 18px 0 0;
  font-size: var(--step-note);
  line-height: 1.75;
  color: var(--c-mist);
}

.page-news .obs-rail__note a {
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 166, 60, 0.4);
}

/* ---------- 区块骨架 ---------- */
.page-news .obs-section {
  padding-top: clamp(30px, 4.6vw, 58px);
}

.page-news .obs-section + .obs-section {
  margin-top: clamp(28px, 4vw, 52px);
  border-top: 1px solid var(--c-line);
}

.page-news .obs-section__head {
  margin-bottom: clamp(18px, 2.6vw, 32px);
}

.page-news .obs-section__index {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-note);
  letter-spacing: 0.24em;
  color: var(--c-gold-deep);
}

.page-news .obs-section__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: var(--step-h2);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--c-frost);
}

.page-news .obs-section__desc {
  margin: 10px 0 0;
  max-width: 48ch;
  font-size: var(--step-body);
  line-height: 1.75;
  color: var(--c-mist);
}

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

.page-news .obs-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 26px);
  padding: clamp(18px, 2.4vw, 26px) clamp(0px, 1vw, 14px) clamp(18px, 2.4vw, 26px) 0;
  border-top: 1px solid var(--c-line);
  transition: background-color 0.35s var(--ease), padding-left 0.35s var(--ease);
}

.page-news .obs-item:hover {
  background: linear-gradient(90deg, rgba(14, 59, 51, 0.55), rgba(14, 59, 51, 0) 78%);
  padding-left: clamp(8px, 1.2vw, 16px);
}

.page-news .obs-item__no {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 32px);
  line-height: 1;
  padding-top: 2px;
  color: var(--c-line);
  transition: color 0.35s var(--ease);
}

.page-news .obs-item:hover .obs-item__no {
  color: var(--c-gold);
}

.page-news .obs-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.page-news .obs-item__time {
  font-family: var(--font-mono);
  font-size: var(--step-note);
  color: var(--c-mist);
}

.page-news .obs-item__title {
  margin: 8px 0 6px;
  font-size: var(--step-h4);
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-frost);
}

.page-news .obs-item__title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

.page-news .obs-item__title a:hover,
.page-news .obs-item__title a:focus-visible {
  color: var(--c-gold);
}

.page-news .obs-item__lead {
  margin: 0;
  max-width: 60ch;
  font-size: var(--step-body);
  line-height: 1.78;
  color: var(--c-mist);
}

.page-news .obs-item__more {
  margin-top: 10px;
}

.page-news .obs-item__more summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--step-note);
  letter-spacing: 0.08em;
  color: var(--c-gold);
  list-style: none;
}

.page-news .obs-item__more summary::-webkit-details-marker {
  display: none;
}

.page-news .obs-item__more summary::after {
  content: "+";
  font-size: 14px;
  line-height: 1;
}

.page-news .obs-item__more[open] summary::after {
  content: "–";
}

.page-news .obs-item__more p {
  margin: 10px 0 0;
  max-width: 58ch;
  padding-left: 12px;
  border-left: 2px solid var(--c-ink-light);
  font-size: var(--step-body);
  line-height: 1.78;
  color: var(--c-frost);
}

/* ---------- 标签贴纸 ---------- */
.page-news .obs-tag {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid currentColor;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.page-news .obs-tag--version {
  color: var(--obs-tag-version);
  background: rgba(240, 166, 60, 0.12);
}

.page-news .obs-tag--migration {
  color: var(--obs-tag-migration);
  background: rgba(226, 96, 63, 0.12);
}

.page-news .obs-tag--season {
  color: var(--obs-tag-season);
  background: rgba(124, 242, 155, 0.1);
}

.page-news .obs-tag--tip {
  color: var(--obs-tag-tip);
  background: rgba(147, 166, 180, 0.12);
}

/* ---------- 图文分栏 ---------- */
.page-news .obs-split {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
}

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

.page-news .obs-figure img,
.page-news .obs-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .obs-banner {
  margin: 0 0 clamp(22px, 3vw, 36px);
}

/* ---------- 版本步骤 ---------- */
.page-news .obs-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: obsstep;
}

.page-news .obs-step {
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-top: 1px solid var(--c-line);
}

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

.page-news .obs-step__tag {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.page-news .obs-step__num {
  color: var(--c-gold);
}

.page-news .obs-step__title {
  margin: 10px 0 6px;
  font-size: var(--step-h3);
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-frost);
}

.page-news .obs-step__text {
  margin: 0;
  max-width: 56ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: var(--c-mist);
}

/* ---------- 公告与技巧条目 ---------- */
.page-news .obs-notes {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .obs-note {
  position: relative;
  padding: clamp(15px, 2vw, 22px) 0 clamp(15px, 2vw, 22px) clamp(16px, 2vw, 26px);
  border-top: 1px solid var(--c-line);
}

.page-news .obs-note::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(22px, 2.6vw, 30px);
  width: 6px;
  height: 6px;
  background: var(--c-ink-light);
  transform: rotate(45deg);
  transition: background-color 0.3s var(--ease);
}

.page-news .obs-note:hover::before {
  background: var(--c-gold);
}

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

.page-news .obs-note:first-child::before {
  top: 6px;
}

.page-news .obs-note__title {
  margin: 0 0 6px;
  font-size: var(--step-h4);
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-frost);
}

.page-news .obs-note__text {
  margin: 0;
  max-width: 56ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: var(--c-mist);
}

.page-news .obs-notes--tips .obs-note__title {
  color: var(--c-frost);
}

/* ---------- 赛季阶段 ---------- */
.page-news .obs-stages {
  display: grid;
  gap: 0;
}

.page-news .obs-stage {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 28px);
  padding: clamp(18px, 2.6vw, 28px) 0;
  border-top: 1px solid var(--c-line);
}

.page-news .obs-stage:first-child {
  border-top: 0;
}

.page-news .obs-stage__no {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1;
  color: var(--c-line);
  transition: color 0.35s var(--ease);
}

.page-news .obs-stage:hover .obs-stage__no {
  color: var(--c-neon);
}

.page-news .obs-stage__title {
  margin: 0 0 6px;
  font-size: var(--step-h3);
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-gold);
}

.page-news .obs-stage__text {
  margin: 0;
  max-width: 58ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: var(--c-mist);
}

/* ---------- 尾部引导 ---------- */
.page-news .obs-outro {
  border-top: 1px solid var(--c-line);
}

.page-news .obs-outro__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--step-h3);
  line-height: 1.2;
  color: var(--c-frost);
}

.page-news .obs-outro__text {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: var(--c-mist);
}

.page-news .obs-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
}

/* ---------- 宽屏 ---------- */
@media (min-width: 900px) {
  .page-news .obs-layout {
    display: grid;
    grid-template-columns: var(--obs-rail) minmax(0, 1fr);
    column-gap: var(--obs-gap);
    align-items: start;
  }

  .page-news .obs-rail {
    margin-bottom: 0;
  }

  .page-news .obs-rail__inner {
    position: sticky;
    top: 116px;
  }

  .page-news .obs-rail__title {
    padding-bottom: 10px;
    border-bottom: 1px solid var(--c-line);
  }

  .page-news .obs-rail__list {
    display: block;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-news .obs-rail__list li + li {
    margin-top: 2px;
  }

  .page-news .obs-rail__link {
    display: block;
    padding: 8px 12px;
    border: 0;
    border-left: 2px solid var(--c-line);
    border-radius: 0;
    font-size: 14px;
    white-space: normal;
  }

  .page-news .obs-rail__link:hover,
  .page-news .obs-rail__link:focus-visible {
    border-left-color: var(--c-gold);
    background: rgba(240, 166, 60, 0.06);
  }

  .page-news .obs-rail__note {
    display: block;
  }
}

@media (min-width: 1100px) {
  .page-news .obs-split {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .obs-split--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
  }

  .page-news .obs-split--reverse .obs-figure {
    order: -1;
  }

  .page-news .obs-stages {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-news .obs-stage:nth-child(2) {
    border-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .obs-item,
  .page-news .obs-item__no,
  .page-news .obs-note::before,
  .page-news .obs-stage__no,
  .page-news .obs-scale__dot,
  .page-news .obs-rail__link {
    transition: none;
  }

  .page-news .obs-scale__node:hover .obs-scale__dot,
  .page-news .obs-scale__node:focus-visible .obs-scale__dot {
    transform: none;
  }
}