.page-news {
  --news-panel: var(--panel);
  --news-paper: var(--paper);
  --news-line: var(--line);
  --news-slate: var(--slate);
  --news-neon: var(--neon);
  --news-cyan: var(--cyan);
  --news-orange: var(--orange);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
}

.page-news__hero {
  position: relative;
  overflow: hidden;
  padding: 32px 0 28px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(19, 31, 51, 0.92) 0%, rgba(11, 18, 32, 0) 58%),
    repeating-linear-gradient(-45deg, rgba(27, 58, 92, 0.16) 0 1px, transparent 1px 12px);
}

.page-news__hero::after {
  content: "39";
  position: absolute;
  right: 8px;
  top: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(96px, 18vw, 200px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(27, 58, 92, 0.85);
  pointer-events: none;
  user-select: none;
  opacity: 0.45;
}

.page-news__hero-head {
  position: relative;
  z-index: 1;
}

.page-news__eyebrow {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-news__hero h1 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: 32px;
  line-height: 1.12;
  margin: 0 0 12px;
  letter-spacing: 0.01em;
  max-width: 720px;
  color: var(--paper);
}

.page-news__lead {
  color: var(--slate);
  font-size: 15px;
  line-height: 1.7;
  max-width: 640px;
  margin: 0;
}

.page-news__tags {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin-top: 20px;
  padding-bottom: 6px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.page-news__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  color: var(--slate);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.page-news__tag:hover,
.page-news__tag:focus-visible {
  border-color: var(--neon);
  color: var(--neon);
  background: rgba(184, 255, 0, 0.06);
}

.page-news__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 28px;
  padding-bottom: 72px;
}

.page-news__sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.page-news__toc {
  background: var(--panel);
  border-left: 3px solid var(--neon);
  padding: 16px;
}

.page-news__toc-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate);
  text-transform: uppercase;
  margin: 0 0 12px;
}

.page-news__toc-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  border-bottom: 1px solid rgba(27, 58, 92, 0.5);
  transition: color 0.15s ease, padding-left 0.15s ease, background 0.15s ease;
}

.page-news__toc-link:last-child {
  border-bottom: 0;
}

.page-news__toc-link:hover,
.page-news__toc-link:focus-visible,
.page-news__toc-link.spy-is-active {
  color: var(--neon);
  padding-left: 6px;
  background: rgba(184, 255, 0, 0.05);
}

.page-news__toc-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  opacity: 0.75;
}

.page-news__contact-box {
  background: var(--panel);
  padding: 16px;
  border-left: 2px solid var(--orange);
}

.page-news__contact-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  font-style: italic;
  margin: 0 0 8px;
  color: var(--paper);
}

.page-news__contact-box p {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--slate);
}

.page-news__contact-line {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  word-break: break-all;
}

.page-news__contact-btn {
  display: inline-flex;
  margin-top: 8px;
  font-size: 13px;
  color: var(--orange);
  text-decoration: none;
  font-family: var(--font-mono);
  border-bottom: 1px solid var(--orange);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.page-news__contact-btn:hover,
.page-news__contact-btn:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
}

.page-news__content {
  display: flex;
  flex-direction: column;
  gap: 44px;
  min-width: 0;
}

.page-news__section {
  scroll-margin-top: 24px;
}

.page-news__feature {
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  overflow: hidden;
}

.page-news__feature-media {
  position: relative;
  aspect-ratio: 2 / 1;
  background: var(--line);
  overflow: hidden;
}

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

.page-news__feature-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 5px 12px;
  background: var(--neon);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.page-news__feature-meta {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-news__feature-body {
  padding: 20px 16px 24px;
}

.page-news__feature-body h3 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: 26px;
  line-height: 1.18;
  margin: 0 0 12px;
  color: var(--paper);
}

.page-news__feature-body p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--slate);
}

.page-news__feature-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-news__feature-details {
  margin-top: 4px;
  border-left: 2px solid var(--cyan);
  padding-left: 12px;
}

.page-news__feature-details summary {
  cursor: pointer;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  list-style: none;
}

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

.page-news__feature-details summary::before {
  content: "＋ ";
}

.page-news__feature-details[open] summary::before {
  content: "－ ";
}

.page-news__feature-details p {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

.page-news__version-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-news__version-list {
  display: flex;
  flex-direction: column;
}

.page-news__version-item {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

.page-news__version-head {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 12px;
  align-items: center;
  list-style: none;
  cursor: pointer;
}

.page-news__version-head::-webkit-details-marker {
  display: none;
}

.page-news__version-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-news__version-title strong {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  line-height: 1.3;
  transition: color 0.15s ease;
}

.page-news__version-title small {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate);
}

.page-news__version-item summary::after {
  content: "＋";
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: 15px;
  transition: color 0.15s ease;
}

.page-news__version-item[open] summary::after {
  content: "－";
  color: var(--neon);
}

.page-news__version-head:hover .page-news__version-title strong {
  color: var(--neon);
}

.page-news__version-full {
  margin: 12px 0 0;
  padding-left: 64px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

.page-news__version-art {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-self: start;
}

.page-news__version-art img {
  width: 100%;
  height: auto;
  display: block;
}

.page-news__version-art p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
  text-align: right;
}

.page-news__guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-news__guide-card {
  background: var(--panel);
  padding: 20px 16px;
  position: relative;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  border-top: 2px solid var(--neon);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}

.page-news__guide-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.page-news__guide-card h3 {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  font-weight: 700;
  margin: 10px 0 8px;
  color: var(--paper);
  line-height: 1.25;
}

.page-news__guide-card p {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.62;
  color: var(--slate);
  flex: 1;
}

.page-news__guide-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 92, 0, 0.6);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.page-news__guide-link:hover,
.page-news__guide-link:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
}

.page-news__guide-card--media {
  border-top-color: var(--orange);
  padding: 0 0 16px;
  overflow: hidden;
}

.page-news__guide-card--media img {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 12px;
  border: 1px solid var(--line);
}

.page-news__guide-content {
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-news__observe-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-news__observe-item {
  background: var(--panel);
  border-left: 3px solid var(--orange);
  padding: 16px;
}

.page-news__observe-head {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 14px;
  align-items: center;
  list-style: none;
  cursor: pointer;
}

.page-news__observe-head::-webkit-details-marker {
  display: none;
}

.page-news__observe-num {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-news__observe-title strong {
  display: block;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  font-style: italic;
  color: var(--paper);
}

.page-news__observe-title small {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.page-news__observe-item summary::after {
  content: "阅读全文";
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  white-space: nowrap;
}

.page-news__observe-item[open] summary::after {
  content: "收起";
}

.page-news__observe-full {
  margin: 12px 0 0;
  padding-left: 70px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--slate);
}

.page-news__observe-media {
  margin-top: 24px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 10px;
}

.page-news__observe-media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-news__observe-media p {
  margin: 8px 0 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  text-align: right;
}

.page-news__brand-note {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 16px;
  background: linear-gradient(135deg, rgba(184, 255, 0, 0.06), rgba(0, 229, 223, 0.04)), var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-news__brand-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.68;
  color: var(--slate);
}

.page-news__brand-note a {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 255, 0, 0.55);
  transition: border-color 0.15s ease;
}

.page-news__brand-note a:hover,
.page-news__brand-note a:focus-visible {
  border-color: var(--neon);
}

@media (min-width: 768px) {
  .page-news__hero {
    padding: 40px 0 32px;
  }

  .page-news__guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news__guide-card--media {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    align-items: stretch;
    padding: 0;
  }

  .page-news__guide-card--media img {
    margin-bottom: 0;
    height: 100%;
    object-fit: cover;
  }

  .page-news__guide-content {
    padding: 20px 20px 20px 0;
  }

  .page-news__version-wrap {
    grid-template-columns: 1fr 220px;
  }
}

@media (min-width: 1080px) {
  .page-news__hero {
    padding: 48px 0 36px;
  }

  .page-news__hero h1 {
    font-size: 48px;
  }

  .page-news__layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
    gap: 48px;
    padding-top: 40px;
  }

  .page-news__sidebar {
    position: sticky;
    top: 24px;
  }

  .page-news__feature {
    display: grid;
    grid-template-columns: 7fr 5fr;
  }

  .page-news__feature-media {
    aspect-ratio: auto;
    height: 100%;
    min-height: 280px;
  }

  .page-news__feature-body {
    padding: 28px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news * {
    transition: none !important;
  }
}