.page-news {
  --pn-pad-x: clamp(18px, 4vw, 56px);
  --pn-sec-gap: clamp(48px, 7vw, 96px);
  --pn-shadow: 6px 6px 0 var(--ink);
  --pn-shadow-soft: 4px 4px 0 var(--sand);
  padding: 0 var(--pn-pad-x) clamp(56px, 8vw, 112px);
  color: var(--body-ink);
  font-family: var(--font-head);
  overflow-x: clip;
}

.page-news .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-news .pn-sec {
  margin-top: var(--pn-sec-gap);
}

/* ---------- 首屏 ---------- */

.page-news .pn-hero {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(28px, 4vw, 52px);
  border-bottom: 2px solid var(--ink);
}

.page-news .pn-hero__wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 44px);
  margin-top: clamp(16px, 2.4vw, 28px);
}

.page-news .pn-hero__lead h1 {
  margin: 10px 0 0;
  font-size: clamp(30px, 5.4vw, 60px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.022em;
  color: var(--ink);
  text-wrap: balance;
}

.page-news .pn-hero__dek {
  margin-top: clamp(14px, 2vw, 24px);
  max-width: 62ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.78;
  color: var(--body-ink);
}

.page-news .pn-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(18px, 2.4vw, 26px);
}

/* 本期推荐 */

.page-news .pn-hero__pick {
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--amber);
  padding: clamp(18px, 2.4vw, 26px);
}

.page-news .pn-hero__pick-label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber-lt);
}

.page-news .pn-pick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-news .pn-pick-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-top: 1px solid rgba(245, 239, 228, 0.18);
}

.page-news .pn-pick-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-news .pn-pick-no {
  font-size: 13px;
  color: var(--amber-lt);
  line-height: 1.6;
}

.page-news .pn-pick-list a {
  color: var(--paper);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease);
}

.page-news .pn-pick-list a:hover,
.page-news .pn-pick-list a:focus-visible {
  color: var(--amber-lt);
  border-bottom-color: var(--amber-lt);
}

.page-news .pn-pick-meta {
  margin: 6px 0 0;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: rgba(245, 239, 228, 0.62);
}

/* ---------- 章节头 ---------- */

.page-news .sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 26px);
  align-items: start;
  padding-bottom: clamp(14px, 2vw, 22px);
  border-bottom: 1px solid var(--sand);
}

.page-news .sec-head__no {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 700;
  line-height: 0.92;
  color: var(--amber);
  letter-spacing: -0.04em;
}

.page-news .sec-head__title {
  margin: 0;
  font-size: clamp(21px, 2.7vw, 30px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-news .sec-head__lead {
  margin: 10px 0 0;
  max-width: 70ch;
  font-size: clamp(14.5px, 1.05vw, 16.5px);
  line-height: 1.78;
  color: var(--body-ink);
}

/* ---------- 栏目标签 ---------- */

.page-news .pn-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  border: 1px solid currentColor;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-news .pn-tag--notice {
  color: var(--amber);
}

.page-news .pn-tag--observe {
  color: var(--teal);
}

.page-news .pn-tag--case {
  color: var(--signal);
}

.page-news .pn-tag--arch {
  color: var(--stamp);
}

.page-news a.pn-tag:hover,
.page-news a.pn-tag:focus-visible {
  background: currentColor;
  color: var(--paper);
}

/* ---------- 栏目分区 ---------- */

.page-news .pn-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-news .pn-col {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 18px 18px;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--pn-shadow-soft);
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-news .pn-col::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--pn-accent, var(--amber));
}

.page-news .pn-col--notice {
  --pn-accent: var(--amber);
}

.page-news .pn-col--observe {
  --pn-accent: var(--teal);
}

.page-news .pn-col--case {
  --pn-accent: var(--signal);
}

.page-news .pn-col--arch {
  --pn-accent: var(--stamp);
}

.page-news .pn-col:hover {
  transform: translateY(-2px);
  border-color: var(--amber-lt);
  box-shadow: var(--pn-shadow);
}

.page-news .pn-col__no {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-news .pn-col__name {
  margin: 0;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .pn-col__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--body-ink);
}

.page-news .pn-col__freq {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--sand);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 最新条目 ---------- */

.page-news .pn-latest-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.page-news .pn-latest-figure img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 340px;
  height: auto;
  object-fit: contain;
  border: 2px solid var(--ink);
  box-shadow: var(--pn-shadow-soft);
  background: var(--paper-dim);
}

.page-news .pn-latest-figure figcaption {
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--slate);
}

.page-news .pn-tags {
  position: sticky;
  top: 0;
  z-index: 6;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(18px, 2.6vw, 28px) 0 clamp(12px, 1.8vw, 18px);
  padding: 12px 0;
  background: var(--paper);
  border-bottom: 1px solid var(--sand);
}

.page-news .pn-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-news .pn-index__item {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no   tag"
    "body body"
    "time time";
  gap: 8px 12px;
  align-items: center;
  padding: 16px 12px 16px 14px;
  border-bottom: 1px solid var(--sand);
  transition: background-color 0.22s var(--ease);
}

.page-news .pn-index__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: var(--amber);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.26s var(--ease);
}

.page-news .pn-index__item:hover {
  background: rgba(217, 207, 190, 0.28);
}

.page-news .pn-index__item:hover::before {
  transform: scaleY(1);
}

.page-news .pn-index__no {
  grid-area: no;
  font-size: 13px;
  color: var(--slate);
  letter-spacing: 0.04em;
}

.page-news .pn-index__tag {
  grid-area: tag;
  justify-self: start;
}

.page-news .pn-index__body {
  grid-area: body;
}

.page-news .pn-index__body a {
  display: inline-block;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--sand);
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-news .pn-index__body a:hover,
.page-news .pn-index__body a:focus-visible {
  color: var(--stamp);
  border-bottom-color: var(--stamp);
}

.page-news .pn-index__body p {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-ink);
}

.page-news .pn-index__time {
  grid-area: time;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 通用图 ---------- */

.page-news .pn-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
  border: 2px solid var(--ink);
  background: var(--paper-dim);
  overflow: hidden;
}

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

.page-news .pn-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--sand);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 校订公告 ---------- */

.page-news .pn-notice-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-news .pn-notice {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.2vw, 26px);
  background: var(--paper);
  border: 2px solid var(--ink);
  border-left-width: 6px;
  border-left-color: var(--amber);
  box-shadow: var(--pn-shadow-soft);
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.page-news .pn-notice:hover {
  transform: translateY(-2px);
  box-shadow: var(--pn-shadow);
}

.page-news .pn-notice__ver {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stamp);
}

.page-news .pn-notice h3 {
  margin: 0;
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 900;
  line-height: 1.4;
  color: var(--ink);
}

.page-news .pn-notice__data {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--sand);
}

.page-news .pn-notice__data > div {
  display: grid;
  grid-template-columns: minmax(72px, 96px) minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--sand);
}

.page-news .pn-notice__data dt {
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
  line-height: 1.7;
}

.page-news .pn-notice__data dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-ink);
}

.page-news .pn-notice__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-ink);
}

/* ---------- 应用案例 ---------- */

.page-news .pn-cases {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-news .pn-case {
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--pn-shadow-soft);
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.page-news .pn-case:hover {
  transform: translateY(-2px);
  box-shadow: var(--pn-shadow);
}

.page-news .pn-case__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 2px solid var(--ink);
}

.page-news .pn-case__head h3 {
  margin: 0;
  font-size: 16.5px;
  font-weight: 900;
  line-height: 1.42;
  color: var(--paper);
}

.page-news .pn-case__head .pn-tag {
  color: var(--amber-lt);
}

.page-news .pn-case__body {
  margin: 0;
  padding: 4px 18px 14px;
}

.page-news .pn-case__body > div {
  display: grid;
  grid-template-columns: minmax(72px, 88px) minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--sand);
}

.page-news .pn-case__body > div:last-child {
  border-bottom: 0;
}

.page-news .pn-case__body dt {
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
  line-height: 1.72;
}

.page-news .pn-case__body dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--body-ink);
}

/* ---------- 档案回顾 ---------- */

.page-news .pn-arch {
  margin-top: clamp(20px, 3vw, 30px);
  border-top: 2px solid var(--ink);
}

.page-news .pn-arch__group {
  border-bottom: 1px solid var(--sand);
}

.page-news .pn-arch__group > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no   title"
    "no   hint";
  gap: 4px 16px;
  align-items: center;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.22s var(--ease);
}

.page-news .pn-arch__group > summary::-webkit-details-marker {
  display: none;
}

.page-news .pn-arch__group > summary:hover {
  background: rgba(217, 207, 190, 0.3);
}

.page-news .pn-arch__no {
  grid-area: no;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  letter-spacing: -0.02em;
}

.page-news .pn-arch__title {
  grid-area: title;
  font-size: clamp(16px, 1.5vw, 18px);
  font-weight: 900;
  line-height: 1.4;
  color: var(--ink);
}

.page-news .pn-arch__hint {
  grid-area: hint;
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--slate);
}

.page-news .pn-arch__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0 0 0 clamp(28px, 4vw, 52px);
}

.page-news .pn-arch__list li {
  position: relative;
  padding: 8px 0 8px 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-ink);
  border-left: 1px solid var(--sand);
}

.page-news .pn-arch__list li::before {
  content: "";
  position: absolute;
  left: -3px;
  top: 18px;
  width: 5px;
  height: 5px;
  background: var(--stamp);
}

/* ---------- 投稿与咨询 ---------- */

.page-news .pn-contribute {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-news .pn-contribute__block {
  padding: clamp(18px, 2.2vw, 26px);
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--pn-shadow-soft);
}

.page-news .pn-contribute__block h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 900;
  line-height: 1.4;
  color: var(--ink);
}

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

.page-news .pn-contribute__block p:last-of-type {
  margin-bottom: 0;
}

.page-news .pn-contribute__block--contact {
  background: var(--ink);
  color: var(--paper);
  box-shadow: 6px 6px 0 var(--amber);
}

.page-news .pn-contribute__block--contact h3 {
  color: var(--paper);
}

.page-news .pn-contact-list {
  margin: 0 0 14px;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(245, 239, 228, 0.2);
}

.page-news .pn-contact-list > div {
  display: grid;
  grid-template-columns: minmax(72px, 96px) minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(245, 239, 228, 0.2);
}

.page-news .pn-contact-list dt {
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--amber-lt);
  line-height: 1.7;
}

.page-news .pn-contact-list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-news .pn-contact-list a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(226, 177, 92, 0.5);
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-news .pn-contact-list a:hover,
.page-news .pn-contact-list a:focus-visible {
  color: var(--amber-lt);
  border-bottom-color: var(--amber-lt);
}

.page-news .pn-contact-note {
  margin: 0 0 16px;
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: rgba(245, 239, 228, 0.68);
}

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

.page-news .pn-contribute__block--contact .btn {
  background: var(--amber);
  color: var(--ink);
  border-color: var(--amber);
}

.page-news .pn-contribute__block--contact .btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 媒体查询 ---------- */

@media (min-width: 640px) {
  .page-news .pn-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .pn-notice-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .pn-cases {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .pn-contribute {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .pn-contribute__block--contact {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-news .pn-hero__wrap {
    grid-template-columns: minmax(0, 1.62fr) minmax(272px, 0.88fr);
    align-items: start;
  }

  .page-news .pn-hero__pick {
    margin-top: 6px;
  }

  .page-news .pn-index__item {
    grid-template-columns: 58px 122px minmax(0, 1fr) 150px;
    grid-template-areas: "no tag .page-news time";
    gap: 14px 18px;
    padding: 18px 16px 18px 20px;
    align-items: center;
  }

  .page-news .pn-index__tag {
    justify-self: start;
  }

  .page-news .pn-index__time {
    text-align: right;
  }

  .page-news .pn-latest-figure img {
    max-height: 400px;
  }

  .page-news .pn-notice-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .pn-cases {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .pn-contribute {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-news .pn-contribute__block--contact {
    grid-column: auto;
  }

  .page-news .pn-arch__group > summary {
    grid-template-columns: 72px minmax(0, 1fr) 160px;
    grid-template-areas: "no title hint";
    padding: 20px 6px;
  }

  .page-news .pn-arch__hint {
    text-align: right;
  }
}

@media (min-width: 1180px) {
  .page-news .pn-cols {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .pn-col,
  .page-news .pn-notice,
  .page-news .pn-case,
  .page-news .pn-index__item,
  .page-news .pn-index__item::before,
  .page-news .pn-pick-list a,
  .page-news .pn-tag {
    transition: none;
  }
  .page-news .pn-col:hover,
  .page-news .pn-notice:hover,
  .page-news .pn-case:hover {
    transform: none;
  }
  .page-news .pn-index__item:hover::before {
    transform: scaleY(1);
  }
}
<<<END>>>