.page-news {
  --news-line: var(--sb-cream-deep);
  --news-when-w: 132px;
  background: var(--sb-cream);
  color: var(--sb-ink);
  font-family: var(--sb-font);
  overflow-x: clip;
}

.page-news h1,
.page-news h2,
.page-news h3 {
  font-family: var(--sb-font);
  letter-spacing: -0.02em;
}

.page-news__h2 {
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 900;
  line-height: 1.2;
  margin: 10px 0 0;
  color: var(--sb-indigo);
}

.page-news__h2--light {
  color: var(--sb-cream);
}

.page-news__eyebrow {
  color: var(--sb-gold-ink);
  margin: 0;
}

.page-news__eyebrow-dark {
  color: var(--sb-gold-soft);
  margin: 0;
}

.page-news__link-inline {
  color: var(--sb-indigo-mid);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--sb-gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-news__hero {
  position: relative;
  padding-top: clamp(22px, 4.5vw, 54px);
  background:
    radial-gradient(120% 82% at 92% -12%, rgba(200, 145, 43, 0.20), rgba(200, 145, 43, 0) 62%),
    linear-gradient(168deg, rgba(158, 43, 37, 0.10) 0%, rgba(22, 35, 63, 0.07) 46%, rgba(246, 240, 228, 0) 78%);
}

.page-news__hero-inner {
  display: grid;
  gap: 12px;
}

.page-news__crumb {
  font-size: 13px;
  color: var(--sb-indigo-mid);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-news__crumb a {
  color: var(--sb-indigo-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--sb-gold-soft);
}

.page-news__crumb-sep {
  color: var(--sb-gold);
}

.page-news__title {
  margin: 4px 0 0;
  color: var(--sb-indigo);
}

.page-news__lead {
  margin: 0;
  max-width: 34em;
  color: var(--sb-indigo);
  font-size: clamp(16px, 2vw, 18px);
}

.page-news__stamp {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
}

.page-news__stamp li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--sb-red);
}

.page-news__stamp-num {
  font-family: var(--sb-font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--sb-red);
  letter-spacing: 0.01em;
}

.page-news__stamp-text {
  font-size: 14px;
  color: var(--sb-indigo-mid);
}

.page-news__hero-media {
  margin: clamp(22px, 4vw, 42px) 0 0;
}

.page-news__hero-media img {
  display: block;
  width: 100%;
  height: clamp(150px, 30vw, 300px);
  object-fit: cover;
  border-top: 3px solid var(--sb-red);
  border-bottom: 3px solid var(--sb-indigo);
}

/* ---------- 条目列表 ---------- */
.page-news__feed {
  padding: clamp(28px, 5vw, 56px) 0 clamp(34px, 6vw, 66px);
}

.page-news__filterbar {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px 16px;
  padding: 14px clamp(14px, 2.4vw, 22px);
  background: var(--sb-cream-deep);
  border-left: 4px solid var(--sb-red);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-news__filter-title {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 900;
  color: var(--sb-indigo);
}

.page-news__all {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--sb-indigo);
  text-decoration: none;
  white-space: nowrap;
  padding: 6px 10px;
  border: 1px solid var(--sb-gold-soft);
  background: var(--sb-cream);
}

.page-news__filters {
  grid-column: 1 / -1;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.page-news__filters::-webkit-scrollbar {
  display: none;
}

.page-news__cb {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-news .page-news__chip {
  cursor: pointer;
  flex: 0 0 auto;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 8px 14px;
  border: 1px solid var(--sb-gold-soft);
  background: var(--sb-cream);
  color: var(--sb-indigo);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: background-color 140ms var(--sb-ease), color 140ms var(--sb-ease);
}

.page-news__cb:checked + .page-news__chip {
  background: var(--sb-red);
  border-color: var(--sb-red-deep);
  color: var(--sb-cream);
}

.page-news__cb:focus-visible + .page-news__chip {
  outline: 2px solid var(--sb-gold);
  outline-offset: 2px;
}

.page-news:has(#f-content:checked) .page-news__log-item:not([data-cat="content"]),
.page-news:has(#f-feature:checked) .page-news__log-item:not([data-cat="feature"]),
.page-news:has(#f-tag:checked) .page-news__log-item:not([data-cat="tag"]),
.page-news:has(#f-legacy:checked) .page-news__log-item:not([data-cat="legacy"]) {
  display: none;
}

.page-news__log-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--news-line);
}

.page-news__log-item {
  border-bottom: 1px solid var(--news-line);
}

.page-news__log {
  display: block;
}

.page-news__log-summary {
  display: grid;
  grid-template-columns: 1fr 26px;
  grid-template-areas:
    "when more"
    "head head"
    "line line";
  gap: 8px 12px;
  padding: 16px 4px 16px 12px;
  cursor: pointer;
  list-style: none;
  border-left: 3px solid transparent;
  transition: border-color 160ms var(--sb-ease), background-color 160ms var(--sb-ease);
}

.page-news__log-summary::-webkit-details-marker {
  display: none;
}

.page-news__log[open] .page-news__log-summary,
.page-news__log-summary:hover {
  border-left-color: var(--sb-red);
  background: rgba(233, 211, 160, 0.22);
}

.page-news__log-summary:focus-visible {
  outline: 2px solid var(--sb-gold);
  outline-offset: -2px;
}

.page-news__when {
  grid-area: when;
  font-family: var(--sb-font-num);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--sb-red);
}

.page-news__log-head {
  grid-area: head;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 10px;
}

.page-news__tag {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 3px 9px;
  background: var(--sb-gold-soft);
  color: var(--sb-ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.page-news__log-title {
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--sb-indigo);
}

.page-news__log-oneline {
  grid-area: line;
  font-size: 15px;
  line-height: 1.7;
  color: var(--sb-indigo-mid);
}

.page-news__log-more {
  grid-area: more;
  align-self: center;
  justify-self: end;
  position: relative;
  width: 26px;
  height: 26px;
  border: 1px solid var(--sb-gold);
}

.page-news__log-more::before,
.page-news__log-more::after {
  content: "";
  position: absolute;
  background: var(--sb-gold-ink);
}

.page-news__log-more::before {
  left: 6px;
  right: 6px;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

.page-news__log-more::after {
  top: 6px;
  bottom: 6px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  transition: transform 180ms var(--sb-ease);
}

.page-news__log[open] .page-news__log-more::after {
  transform: translateX(-50%) scaleY(0);
}

.page-news__log-body {
  padding: 0 4px 20px 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sb-ink);
}

.page-news__log-body p {
  margin: 0 0 10px;
  max-width: 40em;
}

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

.page-news__log-body a {
  color: var(--sb-indigo-mid);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--sb-gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-news__log[open] .page-news__log-body {
  animation: news-rise 220ms var(--sb-ease) both;
}

@keyframes news-rise {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 版本迭代 ---------- */
.page-news__versions {
  position: relative;
  padding: clamp(38px, 7vw, 76px) 0;
  background: var(--sb-indigo);
  color: var(--sb-cream);
  overflow: hidden;
  isolation: isolate;
}

.page-news__versions-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  z-index: 0;
}

.page-news__versions-inner {
  position: relative;
  z-index: 1;
}

.page-news__versions-lead {
  margin: 12px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(246, 240, 228, 0.82);
}

.page-news__track {
  list-style: none;
  display: flex;
  gap: clamp(20px, 9vw, 96px);
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 0 0 26px;
  overflow-x: auto;
  scrollbar-width: none;
  position: relative;
}

.page-news__track::-webkit-scrollbar {
  display: none;
}

.page-news__track::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 14px;
  height: 2px;
  background: linear-gradient(90deg, var(--sb-gold) 0%, rgba(200, 145, 43, 0.28) 100%);
}

.page-news__track-item {
  flex: 0 0 auto;
}

.page-news__node {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 9px;
  text-decoration: none;
  color: inherit;
  padding: 4px 6px 20px;
  min-width: 96px;
}

.page-news__node-ver {
  font-family: var(--sb-font-num);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--sb-gold-soft);
}

.page-news__node-dot {
  width: 13px;
  height: 13px;
  background: var(--sb-gold);
  transform: rotate(45deg);
  position: relative;
  z-index: 1;
  transition: background-color 180ms var(--sb-ease), transform 180ms var(--sb-ease);
}

.page-news__node-stage {
  font-size: 13px;
  color: rgba(246, 240, 228, 0.72);
  white-space: nowrap;
}

.page-news__node:hover .page-news__node-dot,
.page-news__node:focus-visible .page-news__node-dot {
  background: var(--sb-cream);
  transform: rotate(45deg) scale(1.18);
}

.page-news__node:focus-visible {
  outline: 2px solid var(--sb-gold);
  outline-offset: 2px;
}

.page-news__version-list {
  display: grid;
  gap: 16px;
}

.page-news__version {
  padding: clamp(18px, 3vw, 26px);
  border-left: 3px solid var(--sb-gold);
  background: rgba(246, 240, 228, 0.07);
  scroll-margin-top: 96px;
}

.page-news__version-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.page-news__version-num {
  font-family: var(--sb-font-num);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--sb-gold);
}

.page-news__version-stage {
  font-size: 13px;
  letter-spacing: 0.02em;
  padding: 3px 9px;
  border: 1px solid rgba(233, 211, 160, 0.5);
  color: var(--sb-gold-soft);
}

.page-news__version-lead {
  margin: 12px 0 0;
  font-size: clamp(16px, 2.2vw, 18px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--sb-cream);
}

.page-news__version-body {
  margin: 14px 0 0;
  display: grid;
  gap: 6px;
}

.page-news__version-body dt {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--sb-gold);
}

.page-news__version-body dd {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(246, 240, 228, 0.88);
}

.page-news__version-body dd:last-child {
  margin-bottom: 0;
}

.page-news__versions-tail {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(246, 240, 228, 0.78);
}

.page-news .page-news__link-inline:hover {
  color: var(--sb-red);
}

.page-news__versions-tail .page-news__link-inline {
  color: var(--sb-gold-soft);
}

/* ---------- 专题系列 ---------- */
.page-news__topics {
  padding: clamp(34px, 6vw, 68px) 0;
  background: var(--sb-cream);
}

.page-news__topics-lead {
  margin: 12px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sb-indigo-mid);
}

.page-news__topic-grid {
  margin-top: clamp(20px, 3.5vw, 32px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-news__topic {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--sb-cream-deep);
  border: 1px solid var(--sb-gold-soft);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-news__topic--b {
  background: var(--sb-cream);
}

.page-news__topic--d {
  background: rgba(44, 66, 112, 0.09);
  border-color: var(--sb-indigo-mid);
}

.page-news__topic-img {
  display: block;
  width: 100%;
  height: clamp(140px, 26vw, 190px);
  object-fit: cover;
  margin: -4px 0 6px;
}

.page-news__topic-title {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--sb-indigo);
}

.page-news__topic-meta {
  margin: 0;
  font-family: var(--sb-font-num);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--sb-red);
}

.page-news__topic-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sb-ink);
}

.page-news__topic-link {
  margin-top: auto;
  padding-top: 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--sb-indigo-mid);
  text-decoration: none;
  border-bottom: 2px solid var(--sb-gold);
  align-self: flex-start;
}

/* ---------- 更新节奏与订阅 ---------- */
.page-news__pulse {
  padding: clamp(32px, 6vw, 64px) 0;
  background: var(--sb-cream-deep);
}

.page-news__pulse-inner {
  display: grid;
  gap: 24px;
}

.page-news__pulse-list {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news__pulse-list li {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 3px solid var(--sb-gold-soft);
}

.page-news__pulse-k {
  font-family: var(--sb-font-num);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--sb-red);
}

.page-news__pulse-v {
  font-size: 15px;
  line-height: 1.75;
  color: var(--sb-ink);
}

.page-news__sub {
  padding: clamp(20px, 3vw, 28px);
  background: var(--sb-indigo);
  color: var(--sb-cream);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  align-self: start;
}

.page-news__sub-title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--sb-cream);
}

.page-news__sub-text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(246, 240, 228, 0.86);
}

.page-news__sub-mail {
  margin: 16px 0 0;
  font-family: var(--sb-font-num);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  letter-spacing: 0.02em;
  word-break: break-all;
}

.page-news__sub-mail a {
  color: var(--sb-gold-soft);
  text-decoration: none;
  border-bottom: 2px solid var(--sb-gold);
}

.page-news__sub-btn {
  margin-top: 18px;
}

/* ---------- 提问通道 ---------- */
.page-news__ask {
  padding: clamp(34px, 6vw, 68px) 0 clamp(40px, 7vw, 78px);
  background:
    radial-gradient(90% 70% at 8% 0%, rgba(76, 122, 74, 0.12), rgba(76, 122, 74, 0) 60%),
    var(--sb-cream);
}

.page-news__ask-inner {
  display: grid;
  gap: 26px;
}

.page-news__ask-text p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sb-ink);
  max-width: 40em;
}

.page-news__ask-contact {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news__ask-contact li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  align-items: baseline;
  padding: 10px 12px;
  background: var(--sb-cream-deep);
  border-left: 3px solid var(--sb-gold);
  font-size: 15px;
}

.page-news__ask-k {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--sb-gold-ink);
  min-width: 62px;
}

.page-news__ask-contact a {
  color: var(--sb-indigo);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--sb-gold-soft);
  word-break: break-all;
}

.page-news__ask-tail {
  font-size: 14px;
}

.page-news__ask-media {
  margin: 0;
}

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

/* ---------- 桌面增强 ---------- */
@media (min-width: 768px) {
  .page-news__filterbar {
    grid-template-columns: auto auto 1fr;
    gap: 12px 18px;
  }

  .page-news__filters {
    grid-column: 3 / 4;
    justify-content: flex-end;
    padding-bottom: 0;
  }

  .page-news__log-summary {
    grid-template-columns: var(--news-when-w) minmax(0, 1fr) 26px;
    grid-template-areas:
      "when head more"
      "when line more";
    align-items: start;
    padding: 18px 8px 18px 14px;
  }

  .page-news__when {
    font-size: 23px;
    padding-top: 2px;
  }

  .page-news__log-more {
    align-self: start;
    margin-top: 2px;
  }

  .page-news__log-body {
    padding-left: calc(var(--news-when-w) + 14px);
    padding-right: 40px;
  }

  .page-news__version-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: start;
  }

  .page-news__version {
    height: 100%;
  }

  .page-news__topic-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-news__topic--a {
    grid-column: span 3;
  }

  .page-news__topic--b {
    grid-column: span 3;
  }

  .page-news__topic--c {
    grid-column: span 2;
  }

  .page-news__topic--d {
    grid-column: span 4;
  }
}

@media (min-width: 960px) {
  .page-news__hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .page-news__pulse-inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-news__ask-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news__log[open] .page-news__log-body {
    animation: none;
  }

  .page-news__log-more::after,
  .page-news__node-dot,
  .page-news .page-news__chip {
    transition: none;
  }
}