.page-news {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  padding-top: var(--header-h);
  overflow-x: clip;
}

.page-news * {
  box-sizing: border-box;
}

.page-news .news-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- masthead ---------- */
.page-news .masthead {
  position: relative;
  border-bottom: 1px solid var(--line);
  padding-block: clamp(20px, 4vw, 34px) clamp(28px, 5vw, 52px);
  background-image:
    linear-gradient(180deg, rgba(242, 107, 56, 0.09), rgba(247, 241, 230, 0) 62%),
    repeating-linear-gradient(90deg, rgba(22, 23, 27, 0.05) 0 1px, transparent 1px 96px);
}

.page-news .masthead h1 {
  font-family: var(--font-round);
  font-weight: 800;
  font-size: clamp(26px, 6vw, 52px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 16px 0 0;
  max-width: 17em;
}

.page-news .masthead-lead {
  margin: 16px 0 0;
  max-width: 44em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: rgba(22, 23, 27, 0.78);
}

.page-news .masthead-meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(136px, 1fr));
  gap: 14px 18px;
}

.page-news .masthead-meta li {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-news .meta-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--rock);
}

.page-news .meta-val {
  font-family: var(--font-round);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

/* ---------- layout ---------- */
.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 48px);
  padding-block: clamp(30px, 5vw, 60px) clamp(40px, 6vw, 76px);
}

.page-news .news-rail {
  display: flex;
  flex-direction: column;
  gap: 26px;
  min-width: 0;
}

.page-news .rail-block {
  border-top: 2px solid var(--ink);
  padding-top: 12px;
}

.page-news .rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--rock);
}

.page-news .legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .legend-list li {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.4;
}

.page-news .legend-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--rock);
}

.page-news .lg-dot {
  width: 8px;
  height: 8px;
  flex: none;
}

.page-news .lg-dot--update { background: var(--orange); }
.page-news .lg-dot--tip { background: var(--yellow); }
.page-news .lg-dot--zone { background: var(--moss); }
.page-news .lg-dot--column { background: var(--violet); }
.page-news .lg-dot--notice { background: var(--rock); }

.page-news .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .index-list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-news .index-list a:hover,
.page-news .index-list a:focus-visible {
  color: var(--orange-deep);
  padding-left: 5px;
}

.page-news .idx-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
}

.page-news .rail-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--paper-2);
}

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

.page-news .rail-figure figcaption {
  padding: 9px 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--rock);
}

/* ---------- flow ---------- */
.page-news .news-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(30px, 5vw, 54px);
  min-width: 0;
}

/* ---------- feature ---------- */
.page-news .feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 28px);
  padding: clamp(18px, 4vw, 34px);
  border: 1px solid var(--line-2);
  border-left: 4px solid var(--orange);
  background-image:
    linear-gradient(135deg, rgba(242, 107, 56, 0.16), rgba(255, 201, 60, 0.12) 48%, rgba(247, 241, 230, 0) 80%);
}

.page-news .feature-title {
  margin: 10px 0 0;
  font-family: var(--font-round);
  font-weight: 800;
  font-size: clamp(21px, 3.6vw, 31px);
  line-height: 1.28;
  letter-spacing: -0.005em;
}

.page-news .feature-lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(22, 23, 27, 0.76);
}

.page-news .feature-steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .feature-steps li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(22, 23, 27, 0.82);
}

.page-news .step-num {
  display: grid;
  place-items: center;
  height: 22px;
  border: 1px solid rgba(242, 107, 56, 0.45);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--orange-deep);
}

.page-news .feature-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-news .feature-figure {
  margin: 0;
  border: 1px solid var(--line-2);
  background: var(--paper-2);
}

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

/* ---------- feed ---------- */
.page-news .feed-head {
  border-top: 2px solid var(--ink);
  padding-top: 14px;
}

.page-news .feed-lead {
  margin: 10px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(22, 23, 27, 0.74);
}

.page-news .feed-body {
  position: relative;
  margin-top: 18px;
}

.page-news .col-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  clip-path: inset(50%);
  pointer-events: none;
}

.page-news .col-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-news .col-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--ink);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .col-chip:hover {
  border-color: var(--orange);
  color: var(--orange-deep);
}

.page-news #col-all:checked ~ .col-bar .col-chip[for="col-all"],
.page-news #col-update:checked ~ .col-bar .col-chip[for="col-update"],
.page-news #col-tip:checked ~ .col-bar .col-chip[for="col-tip"],
.page-news #col-zone:checked ~ .col-bar .col-chip[for="col-zone"],
.page-news #col-column:checked ~ .col-bar .col-chip[for="col-column"],
.page-news #col-notice:checked ~ .col-bar .col-chip[for="col-notice"] {
  background: var(--orange);
  border-color: var(--orange);
  color: #ffffff;
}

.page-news #col-update:checked ~ .feed-list .entry:not([data-cat="update"]),
.page-news #col-tip:checked ~ .feed-list .entry:not([data-cat="tip"]),
.page-news #col-zone:checked ~ .feed-list .entry:not([data-cat="zone"]),
.page-news #col-column:checked ~ .feed-list .entry:not([data-cat="column"]),
.page-news #col-notice:checked ~ .feed-list .entry:not([data-cat="notice"]) {
  display: none;
}

.page-news .feed-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-bottom: 8px;
}

.page-news .entry {
  position: relative;
  border-top: 1px solid var(--line);
  padding: 18px 0 20px;
}

.page-news .entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 0;
  height: 2px;
  background: var(--orange);
  transition: width 220ms var(--ease);
}

.page-news .entry:hover::before,
.page-news .entry:focus-within::before {
  width: 54px;
}

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

.page-news .entry-cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink);
}

.page-news .entry-cat::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--rock);
}

.page-news .entry[data-cat="update"] .entry-cat::before { background: var(--orange); }
.page-news .entry[data-cat="tip"] .entry-cat::before { background: var(--yellow); }
.page-news .entry[data-cat="zone"] .entry-cat::before { background: var(--moss); }
.page-news .entry[data-cat="column"] .entry-cat::before { background: var(--violet); }
.page-news .entry[data-cat="notice"] .entry-cat::before { background: var(--rock); }

.page-news .entry-when {
  color: var(--rock);
}

.page-news .entry-title {
  margin: 10px 0 0;
  font-family: var(--font-round);
  font-weight: 700;
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.5;
}

.page-news .entry-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-news .entry-title a:hover,
.page-news .entry-title a:focus-visible {
  color: var(--orange-deep);
}

.page-news .entry-summary {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(22, 23, 27, 0.72);
}

.page-news .entry--lead {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding-top: 22px;
}

.page-news .entry-thumb {
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--paper-2);
}

.page-news .entry-thumb img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  transition: transform 220ms var(--ease);
}

.page-news .entry--lead:hover .entry-thumb img {
  transform: scale(1.02);
}

/* ---------- timeline ---------- */
.page-news .timeline-sec {
  background: var(--night);
  color: var(--paper);
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--night-2);
}

.page-news .coord-label--inv {
  color: var(--yellow);
}

.page-news .timeline-sec .section-title {
  color: var(--paper);
  margin-top: 10px;
}

.page-news .tl-lead {
  margin: 12px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 241, 230, 0.74);
}

.page-news .tl-figure {
  margin: 22px 0 0;
  border: 1px solid var(--line-inv);
  background: var(--night-2);
}

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

.page-news .tl-figure figcaption {
  padding: 9px 13px;
  border-top: 1px solid var(--line-inv);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(247, 241, 230, 0.6);
}

.page-news .tl-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-news .tl-item {
  position: relative;
  padding: 15px 0 17px 28px;
  border-top: 1px solid var(--line-inv);
}

.page-news .tl-item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 21px;
  width: 9px;
  height: 9px;
  background: var(--yellow);
  transition: transform 200ms var(--ease), background 200ms var(--ease);
}

.page-news .tl-item::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 30px;
  bottom: -1px;
  width: 1px;
  background: var(--line-inv);
}

.page-news .tl-item:last-child::after {
  display: none;
}

.page-news .tl-item:hover::before {
  transform: rotate(45deg) scale(1.25);
  background: var(--mint);
}

.page-news .tl-phase {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--yellow);
}

.page-news .tl-title {
  margin: 6px 0 0;
  font-family: var(--font-round);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  color: var(--paper);
}

.page-news .tl-text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(247, 241, 230, 0.72);
}

/* ---------- next ---------- */
.page-news .next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding: clamp(20px, 4vw, 34px);
  background: var(--paper-2);
  border: 1px solid var(--line-2);
}

.page-news .next-lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(22, 23, 27, 0.76);
}

.page-news .next-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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

.page-news .next-links a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 13px 0;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.5;
  transition: color var(--dur) var(--ease);
}

.page-news .next-links a:hover,
.page-news .next-links a:focus-visible {
  color: var(--orange-deep);
}

.page-news .arrow {
  font-family: var(--font-mono);
  color: var(--orange);
  transition: transform var(--dur) var(--ease);
}

.page-news .next-links a:hover .arrow,
.page-news .next-links a:focus-visible .arrow {
  transform: translateX(4px);
}

/* ---------- responsive ---------- */
@media (min-width: 760px) {
  .page-news .feature {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-news .feed-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 38px);
  }

  .page-news .feed-list > .entry:nth-child(even) {
    transform: translateY(24px);
  }

  .page-news .entry--lead {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
    gap: 24px;
    align-items: center;
    transform: none;
  }

  .page-news .tl-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(22px, 3vw, 40px);
  }

  .page-news .tl-item:nth-child(odd) {
    border-top: 1px solid var(--line-inv);
  }

  .page-news .next {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: clamp(24px, 4vw, 44px);
  }
}

@media (min-width: 960px) {
  .page-news .news-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 58px);
  }

  .page-news .news-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    align-self: start;
  }
}

@media (max-width: 479px) {
  .page-news .col-chip {
    padding: 7px 11px;
    font-size: 12px;
  }

  .page-news .feature {
    border-left-width: 3px;
  }

  .page-news .next-links a {
    font-size: 13.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .entry::before,
  .page-news .entry-thumb img,
  .page-news .tl-item::before,
  .page-news .index-list a,
  .page-news .next-links a,
  .page-news .arrow {
    transition: none;
  }

  .page-news .entry--lead:hover .entry-thumb img,
  .page-news .next-links a:hover .arrow,
  .page-news .tl-item:hover::before,
  .page-news .feed-list > .entry:nth-child(even) {
    transform: none;
  }
}
<<<END>>>