.page-news {
  --news-pad: clamp(40px, 6vw, 88px);
  --news-gap: clamp(26px, 4vw, 56px);
}

.page-news .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.page-news .breadcrumb {
  padding-top: clamp(16px, 2.6vw, 26px);
}

.page-news .breadcrumb a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-news .breadcrumb a:hover {
  color: var(--ink);
  border-bottom-color: var(--maple);
}

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

/* ---------- 首屏 ---------- */

.page-news .news-lead {
  padding-bottom: var(--news-pad);
}

.page-news .news-lead__grid {
  gap: var(--news-gap);
  padding-top: clamp(22px, 4vw, 46px);
  align-items: start;
}

.page-news .news-lead__side {
  padding-top: 4px;
}

.page-news .news-lead__side::before {
  content: "";
  display: block;
  width: 44px;
  height: 2px;
  background: var(--maple);
  margin-bottom: 20px;
}

.page-news h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(2.2rem, 7.2vw, 4.8rem);
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-wrap: balance;
}

.page-news .news-lead__main .lede {
  margin: 0;
  color: var(--slate);
}

.page-news .news-lead__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  list-style: none;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--slate);
}

.page-news .news-lead__facts .mono {
  color: var(--ink);
  margin-right: 3px;
}

.page-news .news-lead__cover {
  margin: clamp(26px, 4vw, 46px) 0 0;
}

/* ---------- 本期专题 ---------- */

.page-news .feature {
  padding-bottom: var(--news-pad);
}

.page-news .section-head {
  display: grid;
  gap: 10px 36px;
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-news .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  line-height: 1.03;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .section-head__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--steel);
}

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

.page-news .feature__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--line);
  transition: transform 180ms var(--ease);
}

.page-news .feature__item:hover {
  transform: translateX(4px);
}

.page-news .feature__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--steel);
  padding-top: 5px;
}

.page-news .feature__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-news .feature__title {
  margin: 0 0 8px;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 500;
  line-height: 1.35;
  color: var(--ink);
}

.page-news .feature__title a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease);
}

.page-news .feature__title a:hover {
  border-bottom-color: var(--maple);
}

.page-news .feature__desc {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------- 分类筛选目录 ---------- */

.page-news .shelf {
  background: var(--paper);
  padding: var(--news-pad) 0;
}

.page-news .shelf__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .shelf__hint {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

.page-news .shelf__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-news .shelf__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 24px;
}

.page-news .shelf__chip {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  padding: 8px 15px;
  border: 1px solid var(--line);
  background: var(--mist);
  color: var(--slate);
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-news .shelf__chip:hover {
  border-color: var(--steel);
  color: var(--ink);
}

.page-news #tf-all:checked ~ .shelf__bar label[for="tf-all"],
.page-news #tf-ver:checked ~ .shelf__bar label[for="tf-ver"],
.page-news #tf-guide:checked ~ .shelf__bar label[for="tf-guide"],
.page-news #tf-sub:checked ~ .shelf__bar label[for="tf-sub"],
.page-news #tf-scope:checked ~ .shelf__bar label[for="tf-scope"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--mist);
}

.page-news #tf-all:focus-visible ~ .shelf__bar label[for="tf-all"],
.page-news #tf-ver:focus-visible ~ .shelf__bar label[for="tf-ver"],
.page-news #tf-guide:focus-visible ~ .shelf__bar label[for="tf-guide"],
.page-news #tf-sub:focus-visible ~ .shelf__bar label[for="tf-sub"],
.page-news #tf-scope:focus-visible ~ .shelf__bar label[for="tf-scope"] {
  outline: 2px solid var(--maple);
  outline-offset: 2px;
}

.page-news #tf-ver:checked ~ .shelf__list .shelf__item:not([data-cat="ver"]),
.page-news #tf-guide:checked ~ .shelf__list .shelf__item:not([data-cat="guide"]),
.page-news #tf-sub:checked ~ .shelf__list .shelf__item:not([data-cat="sub"]),
.page-news #tf-scope:checked ~ .shelf__list .shelf__item:not([data-cat="scope"]) {
  display: none;
}

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

.page-news .shelf__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .shelf__cat {
  grid-column: 1;
  grid-row: 1;
  justify-self: start;
  align-self: center;
}

.page-news .shelf__title-item {
  grid-column: 1 / -1;
  grid-row: 2;
  margin: 0;
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--ink);
}

.page-news .shelf__desc {
  grid-column: 1 / -1;
  grid-row: 3;
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-news .shelf__time {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

/* ---------- 版本更新记录 ---------- */

.page-news .versions {
  background: var(--ink);
  color: var(--mist);
  padding: var(--news-pad) 0;
}

.page-news .versions__grid {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
}

.page-news .versions__eyebrow {
  color: var(--mist-blue);
}

.page-news .versions__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-news .versions__note {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-blue);
}

.page-news .versions__media {
  margin: 26px 0 0;
}

.page-news .versions__media .media__caption {
  color: var(--mist-blue);
}

.page-news .versions__list {
  list-style: none;
  margin: 0;
  padding: 6px 0 0 24px;
  border-left: 1px solid rgba(242, 243, 240, 0.22);
}

.page-news .versions__item {
  position: relative;
  padding-bottom: 30px;
}

.page-news .versions__item:last-child {
  padding-bottom: 0;
}

.page-news .versions__item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 9px;
  width: 9px;
  height: 9px;
  background: var(--maple);
}

.page-news .versions__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
}

.page-news .versions__ver {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-news .versions__when {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist-blue);
}

.page-news .versions__item h3 {
  margin: 0 0 7px;
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--mist);
}

.page-news .versions__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist-blue);
}

/* ---------- 使用指南 + 订阅 ---------- */

.page-news .guide {
  padding: var(--news-pad) 0;
}

.page-news .guide__grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
}

.page-news .guide h2 {
  margin: 12px 0 24px;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .guide__item {
  border-top: 1px solid var(--line);
}

.page-news .guide__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .guide__item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 16px 34px 16px 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink);
  transition: color 180ms var(--ease);
}

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

.page-news .guide__item summary::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--maple);
}

.page-news .guide__item[open] summary::after {
  content: "\2212";
}

.page-news .guide__item summary:hover {
  color: var(--slate);
}

.page-news .guide__item summary:focus-visible {
  outline: 2px solid var(--maple);
  outline-offset: 3px;
}

.page-news .guide__item p {
  margin: 0 0 18px;
  padding-right: 20px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--slate);
}

.page-news .guide__media {
  margin: clamp(24px, 3vw, 36px) 0 0;
}

.page-news .sub-card {
  background: var(--paper);
  border-top: 2px solid var(--maple);
  padding: clamp(20px, 3vw, 30px);
}

.page-news .sub-card__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-news .sub-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(1.4rem, 2.4vw, 1.78rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .sub-card__intro {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--slate);
}

.page-news .sub-card__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-news .sub-card__list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-news .sub-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1px;
  background: var(--maple);
}

.page-news .sub-card__note {
  margin: 0 0 20px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

.page-news .sub-card__media {
  margin: 20px 0 0;
}

/* ---------- 服务范围 ---------- */

.page-news .scope {
  padding: 0 0 var(--news-pad);
}

.page-news .scope__grid {
  gap: clamp(20px, 3vw, 44px);
  border-top: 1px solid var(--line);
  padding-top: clamp(28px, 4vw, 46px);
}

.page-news .scope h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .scope__body p {
  margin: 0 0 16px;
}

.page-news .scope__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 780px) {
  .page-news .section-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
    align-items: end;
  }

  .page-news .shelf__item {
    grid-template-columns: 108px minmax(0, 1fr) 72px;
    gap: 4px 22px;
    padding: 20px 0;
  }

  .page-news .shelf__cat {
    grid-column: 1;
    grid-row: 1;
    align-self: start;
    justify-self: start;
  }

  .page-news .shelf__title-item {
    grid-column: 2;
    grid-row: 1;
  }

  .page-news .shelf__time {
    grid-column: 3;
    grid-row: 1;
    align-self: start;
  }

  .page-news .shelf__desc {
    grid-column: 2 / -1;
    grid-row: 2;
  }
}

@media (min-width: 900px) {
  .page-news .feature__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 4px 30px;
  }

  .page-news .versions__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-news .guide__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .feature__item,
  .page-news .feature__title a,
  .page-news .shelf__chip,
  .page-news .guide__item summary,
  .page-news .breadcrumb a {
    transition: none;
  }

  .page-news .feature__item:hover {
    transform: none;
  }
}