.page-news {
  --rail-w: 150px;
  --note-step: 4%;
  --hair-line: rgba(43, 53, 104, .85);
  position: relative;
  display: block;
  padding-top: clamp(94px, 13vw, 152px);
  padding-bottom: clamp(48px, 8vw, 112px);
  background:
    radial-gradient(1100px 620px at 84% -6%, rgba(53, 224, 216, .09), transparent 64%),
    radial-gradient(880px 520px at 3% 42%, rgba(255, 122, 47, .06), transparent 62%),
    var(--bg-900);
  color: var(--white);
  overflow-x: hidden;
}

.page-news::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    rgba(242, 246, 255, .026) 0 1px,
    transparent 1px 4px
  );
  z-index: 0;
}

.page-news > .page-wrap {
  position: relative;
  z-index: 1;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(26px, 4vw, 48px);
  padding: 0;
  list-style: none;
}

.page-news .breadcrumb li {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .05em;
  color: var(--slate);
}

.page-news .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--bg-700);
}

.page-news .breadcrumb a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 216, .3);
}

.page-news .breadcrumb a:hover {
  color: var(--cyan);
}

/* ---------- 开篇 ---------- */
.page-news .news-masthead {
  max-width: 52rem;
  margin-bottom: clamp(44px, 7vw, 96px);
}

.page-news .news-masthead h1 {
  margin: 14px 0 22px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2.05rem, 6.2vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.022em;
  color: var(--white);
}

.page-news .news-masthead h1 .hl {
  color: var(--cyan);
  box-shadow: inset 0 -0.18em 0 rgba(53, 224, 216, .22);
}

.page-news .news-masthead .lead {
  max-width: 44rem;
  margin: 0;
  font-size: clamp(.98rem, 1.6vw, 1.12rem);
  line-height: 1.9;
  color: #c9d2f0;
}

.page-news .masthead-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
}

.page-news .masthead-stats .stat {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: linear-gradient(140deg, rgba(20, 27, 71, .86), rgba(11, 16, 48, .5));
  border: 1px solid var(--hair-line);
}

.page-news .masthead-stats dt {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--slate);
  text-transform: uppercase;
}

.page-news .masthead-stats dd {
  margin: 8px 0 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}

.page-news .masthead-stats dd .mono {
  color: var(--cyan);
  font-size: 1.1rem;
}

@media (min-width: 620px) {
  .page-news .masthead-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 赛季刻度 ---------- */
.page-news .season-rail {
  position: sticky;
  top: 84px;
  z-index: 3;
  margin-bottom: 26px;
  padding: 6px;
  border-radius: var(--radius-pill);
  background: rgba(11, 16, 48, .88);
  border: 1px solid var(--hair-line);
}

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

.page-news .rail-list::-webkit-scrollbar {
  display: none;
}

.page-news .rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  color: var(--slate);
  font-size: .82rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-news .rail-link .mono {
  font-size: .68rem;
  color: var(--cyan);
  opacity: .78;
}

.page-news .rail-link:hover {
  color: var(--cyan-soft);
  border-color: rgba(53, 224, 216, .28);
}

.page-news .rail-link.is-active {
  color: var(--white);
  border-color: rgba(53, 224, 216, .5);
  background: rgba(53, 224, 216, .1);
}

/* ---------- 赛季区块与笔记 ---------- */
.page-news .season-block {
  padding-top: clamp(20px, 3vw, 34px);
}

.page-news .season-block + .season-block {
  margin-top: clamp(34px, 5vw, 58px);
  border-top: 1px solid var(--hair-line);
}

.page-news .season-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 clamp(18px, 3vw, 28px);
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-news .season-title .anchor-code {
  color: var(--cyan);
}

.page-news .note {
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--radius-md);
  background: linear-gradient(158deg, rgba(20, 27, 71, .92), rgba(11, 16, 48, .72));
  box-shadow: var(--glow-idle);
  transition: box-shadow .3s var(--ease), transform .3s var(--ease);
}

.page-news .note + .note {
  margin-top: 16px;
}

.page-news .note:hover {
  box-shadow: var(--glow-active);
  transform: translateY(-2px);
}

.page-news .note-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-news .note-when {
  margin-left: auto;
  font-size: .7rem;
  letter-spacing: .04em;
  color: var(--slate);
  white-space: nowrap;
}

.page-news .tag--plain {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(53, 224, 216, .28);
  background: rgba(53, 224, 216, .06);
  color: var(--cyan-soft);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .04em;
  white-space: nowrap;
}

.page-news .note-title {
  margin: 14px 0 8px;
  font-size: clamp(1.02rem, 2.4vw, 1.28rem);
  font-weight: 800;
  line-height: 1.36;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-news .season-block article:nth-of-type(1) .note-title {
  font-size: clamp(1.14rem, 3vw, 1.52rem);
}

.page-news .note-title .mono {
  color: var(--gold);
  font-size: 1.05em;
}

.page-news .note-sum {
  margin: 0;
  font-size: .93rem;
  line-height: 1.78;
  color: #b6c0e4;
}

.page-news .note-more {
  margin-top: 14px;
}

.page-news .note-more > summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
}

.page-news .note-more > summary::-webkit-details-marker {
  display: none;
}

.page-news .note-more > summary::after {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: .82rem;
  line-height: 1;
}

.page-news .note-more[open] > summary::after {
  content: "−";
}

.page-news .note-more > summary:hover {
  color: var(--cyan-soft);
}

.page-news .note-body {
  margin-top: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--hair-line);
}

.page-news .note-body p {
  margin: 0 0 12px;
  font-size: .9rem;
  line-height: 1.86;
  color: #aab5dd;
}

.page-news .note-body p:last-child {
  margin-bottom: 0;
}

.page-news .note-body a,
.page-news .archive-note a,
.page-news .next-sub a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 216, .34);
}

.page-news .note-body a:hover,
.page-news .archive-note a:hover,
.page-news .next-sub a:hover {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

.page-news .note-body .mono,
.page-news .note-sum .mono {
  color: var(--gold);
  font-size: 1.02em;
}

/* 桌面端：越旧的笔记越窄 */
@media (min-width: 760px) {
  .page-news .season-block article:nth-of-type(1) { width: 100%; }
  .page-news .season-block article:nth-of-type(2) { width: 94%; }
  .page-news .season-block article:nth-of-type(3) { width: 88%; }
  .page-news .season-block article:nth-of-type(4) { width: 82%; }
}

/* 桌面端：左侧竖向刻度 */
@media (min-width: 1000px) {
  .page-news .stream {
    display: grid;
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }

  .page-news .season-rail {
    position: sticky;
    top: 118px;
    margin-bottom: 0;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0;
  }

  .page-news .rail-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 0;
    overflow: visible;
    border-left: 1px solid rgba(53, 224, 216, .18);
  }

  .page-news .rail-link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 13px 12px 13px 18px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    border: none;
    border-left: 2px solid transparent;
    margin-left: -1px;
    white-space: normal;
  }

  .page-news .rail-link.is-active {
    border-left-color: var(--cyan);
    background: linear-gradient(90deg, rgba(53, 224, 216, .14), transparent 82%);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  }

  .page-news .rail-link:hover {
    border-left-color: rgba(53, 224, 216, .5);
  }
}

/* ---------- 规则读法 ---------- */
.page-news .rules-band {
  align-items: start;
  gap: clamp(26px, 4vw, 52px);
}

.page-news .rules-steps {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .rules-steps li {
  position: relative;
  padding: 20px 20px 20px 66px;
  border-radius: var(--radius-md);
  background: linear-gradient(120deg, rgba(20, 27, 71, .82), rgba(11, 16, 48, .5));
  border: 1px solid var(--hair-line);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-news .rules-steps li:hover {
  border-color: rgba(53, 224, 216, .38);
  background: linear-gradient(120deg, rgba(20, 27, 71, .95), rgba(15, 42, 82, .55));
}

.page-news .rule-no {
  position: absolute;
  left: 20px;
  top: 22px;
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-news .rules-steps h3 {
  margin: 0 0 8px;
  font-size: clamp(1rem, 2.2vw, 1.12rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-news .rules-steps p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.86;
  color: #aab5dd;
}

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

/* ---------- 合并观察 ---------- */
.page-news .merge-band {
  align-items: start;
  gap: clamp(26px, 4vw, 52px);
}

.page-news .merge-copy p {
  margin: 0 0 18px;
  font-size: .96rem;
  line-height: 1.9;
  color: #b6c0e4;
}

.page-news .merge-copy p:first-child::first-letter {
  float: left;
  margin: 6px 12px 0 0;
  font-family: var(--font-mono);
  font-size: 2.6rem;
  line-height: .82;
  color: var(--cyan);
}

.page-news .merge-copy .mono {
  color: var(--gold);
  font-size: 1.04em;
}

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

/* ---------- 季度归档 ---------- */
.page-news .archive-cover {
  margin: 0 0 clamp(28px, 4vw, 46px);
}

.page-news .arc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .arc-card {
  position: relative;
  padding: 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(20, 27, 71, .72), rgba(11, 16, 48, .42));
  border: 1px solid var(--hair-line);
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-news .arc-card:hover {
  border-color: rgba(53, 224, 216, .34);
  transform: translateY(-3px);
}

.page-news .arc-swatch {
  position: relative;
  display: block;
  width: 54px;
  height: 54px;
  margin-bottom: 14px;
  border-radius: 12px;
  background: var(--deep-teal);
  overflow: hidden;
}

.page-news .arc-swatch::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--cyan);
  opacity: calc(.06 + var(--i, 0) * .062);
}

.page-news .arc-card:nth-child(1)  { --i: 0; }
.page-news .arc-card:nth-child(2)  { --i: 1; }
.page-news .arc-card:nth-child(3)  { --i: 2; }
.page-news .arc-card:nth-child(4)  { --i: 3; }
.page-news .arc-card:nth-child(5)  { --i: 4; }
.page-news .arc-card:nth-child(6)  { --i: 5; }
.page-news .arc-card:nth-child(7)  { --i: 6; }
.page-news .arc-card:nth-child(8)  { --i: 7; }
.page-news .arc-card:nth-child(9)  { --i: 8; }

.page-news .arc-id {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-news .arc-key {
  margin: 6px 0 6px;
  font-size: .98rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-news .arc-desc {
  margin: 0;
  font-size: .82rem;
  line-height: 1.74;
  color: var(--slate);
}

.page-news .archive-note {
  max-width: 44rem;
  margin: clamp(26px, 4vw, 40px) 0 0;
  font-size: .9rem;
  line-height: 1.9;
  color: #aab5dd;
}

@media (min-width: 640px) {
  .page-news .arc-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

/* ---------- 更新预期 ---------- */
.page-news .next-section {
  padding-bottom: clamp(10px, 3vw, 30px);
}

.page-news .next-band {
  align-items: start;
  gap: clamp(26px, 4vw, 52px);
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(150deg, rgba(15, 42, 82, .78), rgba(11, 16, 48, .62)),
    radial-gradient(600px 300px at 90% 0%, rgba(255, 122, 47, .2), transparent 68%);
  box-shadow: var(--glow-idle);
}

.page-news .next-copy .eyebrow {
  margin-bottom: 10px;
}

.page-news .next-copy h2 {
  margin: 0 0 14px;
  font-size: clamp(1.5rem, 3.6vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--white);
}

.page-news .next-copy .lead {
  margin: 0 0 22px;
  font-size: .96rem;
  line-height: 1.86;
  color: #b6c0e4;
}

.page-news .next-list {
  display: grid;
  gap: 14px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.page-news .next-list li {
  position: relative;
  padding-left: 22px;
  font-size: .9rem;
  line-height: 1.82;
  color: #aab5dd;
}

.page-news .next-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--orange);
}

.page-news .next-list strong {
  color: var(--white);
  font-weight: 800;
}

.page-news .next-sub {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid rgba(53, 224, 216, .2);
  font-size: .88rem;
  line-height: 1.9;
  color: #b6c0e4;
}

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

/* ---------- 收尾微调 ---------- */
@media (max-width: 639px) {
  .page-news .season-block article {
    width: 100%;
  }

  .page-news .note-when {
    margin-left: 0;
    width: 100%;
  }

  .page-news .arc-grid {
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .note,
  .page-news .arc-card,
  .page-news .rules-steps li,
  .page-news .rail-link {
    transition: none;
  }

  .page-news .note:hover,
  .page-news .arc-card:hover {
    transform: none;
  }
}