.page-news {
  --news-line: rgba(183, 194, 204, 0.16);
  --news-hair: rgba(183, 194, 204, 0.12);
  --news-paper-ink: #14212E;
  --news-paper-body: #3D4A56;
  --news-shadow: 0 18px 40px rgba(8, 19, 31, 0.42);
  padding-bottom: 96px;
  background:
    radial-gradient(1100px 620px at 78% -4%, rgba(34, 240, 224, 0.10), transparent 60%),
    radial-gradient(880px 520px at 0% 32%, rgba(255, 107, 44, 0.07), transparent 62%);
  background-repeat: no-repeat;
}

.page-news .news-inner {
  display: grid;
  gap: 58px;
  padding-top: 26px;
}

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

/* ---------- 首屏 ---------- */

.page-news .news-masthead {
  display: grid;
  gap: 20px;
}

.page-news .h1-main {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(40px, 10vw, 72px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-news .h1-sub {
  display: block;
  margin-top: 14px;
  font-family: var(--font-num);
  font-size: clamp(12px, 3vw, 15px);
  font-weight: 500;
  letter-spacing: 0.16em;
  line-height: 1.5;
  color: var(--cyan);
}

.page-news .news-lede {
  margin: 0;
  max-width: 68ch;
  font-size: clamp(15.5px, 3.6vw, 17.5px);
  line-height: 1.78;
  color: var(--steel-2);
}

.page-news .news-brief {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 4px 0 0;
  padding: 0;
  background: var(--news-line);
  border: 1px solid var(--news-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-news .news-brief__item {
  background: var(--ink-800);
  padding: 15px 16px;
}

.page-news .news-brief dt {
  margin: 0 0 7px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel-2);
}

.page-news .news-brief dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-news .news-brief dd small {
  font-size: 12px;
  font-weight: 400;
  margin-left: 3px;
  color: var(--steel-2);
}

.page-news .news-banner {
  margin: 0;
}

/* ---------- 更新节奏时间轴 ---------- */

.page-news .news-rhythm {
  display: grid;
  gap: 16px;
}

.page-news .news-rhythm__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
}

.page-news .news-rhythm__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-news .news-rhythm__note {
  margin: 0;
  font-size: 13px;
  color: var(--steel-2);
}

.page-news .rhythm-track {
  position: relative;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(150px, 1fr);
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-news .rhythm-track::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 7px;
  right: 12px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 240, 224, 0.2) 62%, transparent);
  pointer-events: none;
}

.page-news .rhythm-node {
  position: relative;
  padding: 26px 16px 0 0;
}

.page-news .rhythm-dot {
  position: absolute;
  top: 1px;
  left: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 240, 224, 0.12);
}

.page-news .rhythm-when {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .rhythm-what {
  display: block;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--steel-2);
}

/* ---------- 简报区 ---------- */

.page-news .notes-zone {
  display: grid;
  gap: 18px;
}

.page-news .notes-zone__head {
  display: grid;
  gap: 16px;
}

.page-news .notes-zone__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 32px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
}

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

.page-news .filter-btn {
  appearance: none;
  border: 1px solid var(--news-line);
  background: rgba(16, 38, 58, 0.62);
  color: var(--steel-2);
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1;
  padding: 10px 16px;
  border-radius: var(--pill);
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-news .filter-btn:hover {
  color: var(--paper);
  border-color: rgba(34, 240, 224, 0.45);
}

.page-news .filter-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  font-weight: 700;
}

.page-news .filter-count {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel-2);
  padding: 7px 12px;
  border-radius: var(--pill);
  border: 1px dashed var(--news-line);
}

.page-news .filter-empty {
  margin: 0;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px dashed rgba(255, 200, 87, 0.5);
  background: rgba(255, 200, 87, 0.08);
  color: var(--amber);
  font-size: 14px;
  line-height: 1.6;
}

/* ---------- 索引 + 条目流 ---------- */

.page-news .notes-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-news .notes-index {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-news .notes-index__title {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--steel);
}

.page-news .index-nav {
  display: grid;
  gap: 2px;
}

.page-news .index-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  font-size: 14.5px;
  color: var(--steel-2);
  text-decoration: none;
  transition: color var(--ease), background var(--ease), border-color var(--ease);
}

.page-news .index-link::after {
  content: "→";
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--steel);
}

.page-news .index-link:hover,
.page-news .index-link:focus-visible {
  color: var(--paper);
  background: rgba(34, 240, 224, 0.09);
  border-left-color: var(--cyan);
  outline: none;
}

.page-news .index-tags {
  display: grid;
  gap: 10px;
  padding-top: 18px;
  border-top: 1px solid var(--news-hair);
}

.page-news .index-tags__title {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--steel);
}

.page-news .index-tags ul {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .index-tags a {
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease);
}

.page-news .index-tags a:hover {
  color: var(--paper);
}

.page-news .notes-stream {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-news .notes-stream__title {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-news .notes-list {
  display: grid;
  gap: 14px;
}

.page-news .note-card {
  display: grid;
  gap: 12px;
  padding: 22px 22px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  background: var(--paper);
  color: var(--news-paper-ink);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.page-news .note-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 107, 44, 0.42);
  box-shadow: var(--news-shadow);
}

.page-news .note-card__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .note-card .tag {
  display: inline-block;
  padding: 4px 11px;
  border-radius: var(--pill);
  border: 1px solid rgba(34, 240, 224, 0.28);
  background: var(--ink-700);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.page-news .note-card .tag-cyan {
  border-color: rgba(34, 240, 224, 0.42);
}

.page-news .note-card .tag-orange {
  border-color: rgba(255, 107, 44, 0.42);
  color: var(--orange);
}

.page-news .note-when {
  margin-left: auto;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #5A6A78;
}

.page-news .note-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 3.8vw, 20px);
  font-weight: 800;
  line-height: 1.42;
  letter-spacing: -0.008em;
  color: var(--news-paper-ink);
}

.page-news .note-card__lead {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--news-paper-body);
}

.page-news .note-card__more {
  border-top: 1px dashed rgba(20, 33, 46, 0.2);
  padding-top: 10px;
}

.page-news .note-card__more summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #1D4358;
}

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

.page-news .note-card__more summary::after {
  content: "+";
  font-size: 15px;
  color: var(--orange);
}

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

.page-news .note-card__more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--news-paper-body);
}

/* ---------- 通用区块 ---------- */

.page-news .news-section {
  display: grid;
  gap: 24px;
  scroll-margin-top: 24px;
}

.page-news .news-section__head {
  display: grid;
  gap: 12px;
  max-width: 76ch;
}

.page-news .news-section__head .eyebrow {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-news .news-section__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 5vw, 34px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.022em;
  color: var(--paper);
}

.page-news .news-section__lede {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--steel-2);
}

/* ---------- 版本迭代 ---------- */

.page-news .version-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-news .version-track {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .version-item {
  display: grid;
  gap: 6px;
  padding: 15px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--news-hair);
  border-left: 3px solid var(--cyan);
  background: var(--ink-800);
}

.page-news .version-no {
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .version-item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 800;
  line-height: 1.42;
  color: var(--paper);
}

.page-news .version-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel-2);
}

/* ---------- iOS 品类观察 ---------- */

.page-news .ios-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-news .ios-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--news-hair);
  border: 1px solid var(--news-hair);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-news .ios-row {
  display: grid;
  gap: 4px;
  padding: 13px 16px;
  background: var(--ink-800);
  transition: background var(--ease);
}

.page-news .ios-row:hover {
  background: var(--ink-700);
}

.page-news .ios-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  color: var(--paper);
}

.page-news .ios-name::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 9px;
  vertical-align: 2px;
  background: var(--cyan);
}

.page-news .ios-row:nth-child(3n) .ios-name::before {
  background: var(--orange);
}

.page-news .ios-row:nth-child(3n + 2) .ios-name::before {
  background: var(--green);
}

.page-news .ios-desc {
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--steel-2);
}

/* ---------- 专题系列 ---------- */

.page-news .series-banner {
  margin: 0;
}

.page-news .series-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-news .series-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 22px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--news-hair);
  background: linear-gradient(160deg, rgba(16, 38, 58, 0.96), rgba(11, 27, 43, 0.96));
}

.page-news .series-card::before {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -70px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 44, 0.22), transparent 70%);
  pointer-events: none;
}

.page-news .series-card__no {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--orange);
}

.page-news .series-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.36;
  color: var(--paper);
}

.page-news .series-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel-2);
}

.page-news .series-card__link {
  justify-self: start;
  margin-top: 4px;
  padding-bottom: 2px;
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 240, 224, 0.35);
  transition: color var(--ease), border-color var(--ease);
}

.page-news .series-card__link:hover {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 关注后续 ---------- */

.page-news .news-follow__card {
  display: grid;
  gap: 16px;
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 107, 44, 0.35);
  background:
    radial-gradient(520px 240px at 88% 10%, rgba(255, 107, 44, 0.22), transparent 68%),
    var(--ink-800);
}

.page-news .news-follow__card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 4.8vw, 30px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--paper);
}

.page-news .news-follow__card p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel-2);
}

.page-news .news-follow__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-news .news-brief {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .news-brief__item {
    padding: 18px 20px;
  }

  .page-news .ios-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .news-follow__card {
    padding: 34px 32px;
  }
}

@media (min-width: 860px) {
  .page-news .version-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-news .ios-grid {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-news .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 980px) {
  .page-news .notes-layout {
    grid-template-columns: 238px minmax(0, 1fr);
    gap: 42px;
    align-items: start;
  }

  .page-news .notes-index {
    padding-top: 6px;
  }

  .page-news .notes-zone__head {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 24px;
  }
}

@media (min-width: 1200px) {
  .page-news .news-inner {
    gap: 68px;
  }

  .page-news .note-card {
    padding: 26px 28px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .note-card,
  .page-news .filter-btn,
  .page-news .index-link,
  .page-news .ios-row,
  .page-news .series-card__link {
    transition: none;
  }

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