.page-news {
  --news-card-text: #3A4555;
  --news-border: rgba(192, 201, 213, 0.22);
  --news-blue-hover: #245CA8;
  --news-silver-soft: #D5DDEC;
  --news-version-text: #6A7A90;
  background: var(--color-bg-deep);
  color: var(--color-text-light);
}

/* ===== Masthead ===== */
.page-news__masthead {
  padding-top: 24px;
  background:
    radial-gradient(ellipse at 12% 0%, rgba(122, 92, 255, 0.12) 0%, transparent 45%),
    radial-gradient(ellipse at 88% 100%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
    var(--color-bg-deep);
  border-bottom: 1px solid var(--news-border);
}

.page-news__crumb {
  margin-bottom: 28px;
}

.page-news__masthead-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-news__masthead-copy {
  max-width: 720px;
}

.page-news__masthead-copy .section-kicker {
  color: var(--color-teal);
}

.page-news__masthead-copy h1 {
  margin: 12px 0 16px;
  font-size: clamp(28px, 4.2vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--color-text-light);
}

.page-news__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-silver);
  max-width: 680px;
}

.page-news__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--news-border);
  border: 1px solid var(--news-border);
}

.page-news__stat {
  background: var(--color-bg-deep);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-news__stat-num {
  font-family: var(--font-data);
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-electric);
}

.page-news__stat-unit {
  font-size: 13px;
  color: var(--color-silver);
  font-weight: 400;
  margin-left: 2px;
}

.page-news__stat-label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-silver);
  text-transform: uppercase;
}

.page-news__masthead-bar {
  margin-top: 36px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-orange) 0%, var(--color-electric) 52%, var(--color-purple) 100%);
}

/* ===== Layout ===== */
.page-news__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 32px 0 64px;
}

/* ===== Sidebar ===== */
.page-news__sidebar-inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-news__sidebar-title {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-silver);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--news-border);
  margin: 0;
}

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

.page-news__index-item {
  margin: 0;
}

.page-news__index-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: 1px solid var(--news-border);
  background: rgba(30, 76, 143, 0.3);
  color: var(--color-silver);
  font-size: 13px;
  text-decoration: none;
  transition: border-color var(--ease-fast), color var(--ease-fast), background var(--ease-fast);
}

.page-news__index-link:hover,
.page-news__index-link.is-spy-active {
  border-color: var(--color-orange);
  color: var(--color-orange);
  background: rgba(255, 122, 0, 0.08);
}

.page-news__index-num {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-purple);
  transition: color var(--ease-fast);
}

.page-news__index-link:hover .page-news__index-num,
.page-news__index-link.is-spy-active .page-news__index-num {
  color: var(--color-orange);
}

.page-news__refresh {
  align-self: flex-start;
  gap: 8px;
  margin-top: 4px;
}

.page-news__sidebar-note {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-silver);
  opacity: 0.75;
}

/* ===== Main ===== */
.page-news__main {
  min-width: 0;
}

.page-news__section {
  margin-bottom: 64px;
  scroll-margin-top: calc(var(--signal-h) + var(--masthead-h) + var(--nav-h) + 12px);
}

.page-news__section-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.page-news__section-num {
  font-family: var(--font-data);
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-purple);
  min-width: 52px;
  text-align: right;
}

.page-news__section-heading {
  padding-top: 2px;
}

.page-news__section-title {
  margin: 0 0 4px;
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--color-text-light);
}

.page-news__section-sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-silver);
}

/* ===== 01 Intro cards ===== */
.page-news__intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-news__intro-card {
  padding: 20px 22px;
  background: var(--color-light-bg);
  color: var(--color-text);
  border-left: 4px solid var(--color-purple);
  box-shadow: var(--shadow-card);
  transition: transform var(--ease-base), box-shadow var(--ease-base);
}

.page-news__intro-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-panel);
}

.page-news__intro-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
}

.page-news__intro-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--news-card-text);
}

.page-news__evolution {
  margin-top: 18px;
  padding: 16px 20px;
  background: rgba(30, 76, 143, 0.3);
  border: 1px solid var(--news-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.page-news__evolution-title {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-light);
  min-width: 68px;
}

.page-news__evolution-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.page-news__evolution-list li {
  font-size: 13px;
  color: var(--color-silver);
  line-height: 1.6;
}

.page-news__evolution-year {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--color-electric);
  margin-right: 4px;
}

.page-news__about-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease-fast), color var(--ease-fast);
}

.page-news__about-link:hover {
  border-bottom-color: var(--color-teal);
  color: var(--color-electric);
}

/* ===== 02 Filters ===== */
.page-news__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--news-border);
}

.page-news__filter {
  font-family: var(--font-data);
  font-size: 13px;
  padding: 6px 14px;
  border: 1px solid var(--news-border);
  color: var(--color-silver);
  text-decoration: none;
  transition: border-color var(--ease-fast), color var(--ease-fast), background var(--ease-fast);
}

.page-news__filter:hover,
.page-news__filter--all {
  border-color: var(--color-electric);
  color: var(--color-electric);
  background: rgba(0, 212, 255, 0.06);
}

/* ===== 02 Article list ===== */
.page-news__article-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-news__article-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-news__group-title {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-silver);
  border-left: 3px solid var(--color-blue);
  padding-left: 12px;
  margin: 0 0 2px;
}

.page-news__article {
  background: var(--color-light-bg);
  color: var(--color-text);
  border-left: 4px solid var(--color-silver);
  box-shadow: var(--shadow-card);
  padding: 18px 20px;
  transition: transform var(--ease-base), box-shadow var(--ease-base), border-color var(--ease-base);
}

.page-news__article:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-panel);
  border-left-color: var(--color-purple);
}

.page-news__article-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.page-news__article-index {
  font-family: var(--font-data);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-purple);
  min-width: 34px;
  line-height: 1.4;
}

.page-news__article-copy {
  flex: 1;
  min-width: 0;
}

.page-news__article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-news__article-version {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--news-version-text);
}

.page-news__tag {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 2px;
}

.page-news__tag--update {
  background: var(--color-teal);
  color: #062A2A;
}

.page-news__tag--data {
  background: var(--color-purple);
  color: var(--color-text-light);
}

.page-news__tag--fan {
  background: var(--color-orange);
  color: var(--color-text-light);
}

.page-news__article-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

.page-news__article-desc {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--news-card-text);
}

.page-news__article-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease-fast), color var(--ease-fast);
}

.page-news__article-more::after {
  content: "→";
  font-family: var(--font-data);
}

.page-news__article-more:hover {
  color: var(--color-electric);
  border-bottom-color: var(--color-electric);
}

.page-news__article-media {
  margin-top: 14px;
  flex-shrink: 0;
}

.page-news__article-media img {
  width: 100%;
  max-width: 320px;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(26, 34, 51, 0.12);
}

/* ===== 03 Field log ===== */
.page-news__field-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-news__field-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-news__field-row {
  background: var(--color-blue);
  border-left: 3px solid var(--color-teal);
  padding: 14px 16px;
  transition: background var(--ease-base), border-color var(--ease-base);
}

.page-news__field-row:hover {
  background: var(--news-blue-hover);
  border-left-color: var(--color-electric);
}

.page-news__field-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.page-news__field-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-light);
}

.page-news__field-tag {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 2px;
}

.page-news__field-tag--new {
  background: var(--color-teal);
  color: #062A2A;
}

.page-news__field-tag--adjust {
  background: var(--color-silver);
  color: var(--color-text);
}

.page-news__field-desc {
  margin: 0 0 6px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--news-silver-soft);
}

.page-news__field-version {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-electric);
}

.page-news__field-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--news-border);
  box-shadow: var(--shadow-panel);
}

/* ===== 04 Guide ===== */
.page-news__guide {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-news__guide-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--news-border);
  box-shadow: var(--shadow-panel);
}

.page-news__guide-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-news__guide-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: rgba(30, 76, 143, 0.35);
  padding: 14px 16px;
  border: 1px solid var(--news-border);
}

.page-news__guide-num {
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-orange);
  min-width: 34px;
  text-align: right;
  line-height: 1.4;
}

.page-news__guide-step h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-light);
}

.page-news__guide-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-silver);
}

.page-news__guide-tip {
  margin-top: 16px;
  padding: 14px 16px;
  background: rgba(0, 229, 204, 0.08);
  border-left: 3px solid var(--color-teal);
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-silver);
}

.page-news__guide-tip p {
  margin: 0;
}

.page-news__guide-tip strong {
  color: var(--color-teal);
}

/* ===== 05 Archive ===== */
.page-news__archive-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-news__archive-card {
  background: var(--color-blue);
  padding: 20px 22px;
  border-top: 3px solid var(--color-purple);
}

.page-news__archive-title {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-light);
}

.page-news__archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-news__archive-list a {
  color: var(--news-silver-soft);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 201, 213, 0.2);
  padding-bottom: 3px;
  transition: color var(--ease-fast), border-color var(--ease-fast);
}

.page-news__archive-list a:hover {
  color: var(--color-electric);
  border-bottom-color: var(--color-electric);
}

.page-news__archive-desc {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--news-silver-soft);
}

.page-news__archive-banner {
  margin: 24px 0;
}

.page-news__archive-banner img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-news__archive-note {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 20px;
  background: rgba(30, 76, 143, 0.3);
  border: 1px solid var(--news-border);
}

.page-news__archive-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-silver);
}

/* ===== Tablet / Desktop ===== */
@media (min-width: 768px) {
  .page-news__masthead-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: end;
    gap: 40px;
  }

  .page-news__stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .page-news__article-media {
    margin-top: 0;
  }

  .page-news__article-media img {
    width: 220px;
    max-width: 100%;
    height: auto;
  }

  .page-news__field-wrap {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-news__guide {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-news__archive-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news__archive-note {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-news__archive-note p {
    max-width: 640px;
  }
}

@media (min-width: 960px) {
  .page-news__layout {
    grid-template-columns: 220px 1fr;
    gap: 48px;
    padding-top: 40px;
  }

  .page-news__sidebar-inner {
    position: sticky;
    top: calc(var(--signal-h) + var(--masthead-h) + var(--nav-h) + 24px);
  }

  .page-news__index-list {
    flex-direction: column;
    gap: 2px;
  }

  .page-news__index-link {
    border: 0;
    border-left: 3px solid transparent;
    border-radius: 0;
    background: transparent;
    width: 100%;
    padding: 8px 12px;
  }

  .page-news__index-link:hover,
  .page-news__index-link.is-spy-active {
    border-left-color: var(--color-orange);
    background: rgba(255, 122, 0, 0.07);
  }

  .page-news__section-num {
    font-size: 56px;
    min-width: 60px;
  }
}