.page-news {
  --pn-navy: #1F3E5C;
  --pn-navy-soft: rgba(31, 62, 92, 0.88);
  --pn-sand-soft: rgba(217, 208, 192, 0.45);
  position: relative;
  background: var(--color-cream);
  overflow: hidden;
}

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

.page-news h1,
.page-news h2,
.page-news h3,
.page-news p,
.page-news figure,
.page-news ul,
.page-news ol {
  margin: 0;
}

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

.page-news [id] {
  scroll-margin-top: 24px;
}

/* ===== Hero 区 ===== */
.page-news__hero {
  position: relative;
  padding: 24px 16px 0;
}

.page-news__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(43, 29, 20, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(43, 29, 20, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-news__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  z-index: 1;
  background:
    linear-gradient(90deg, var(--color-orange) 0 74%, var(--color-brown) 74% 100%);
}

.page-news__hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1240px;
  margin: 0 auto;
}

.page-news .breadcrumb {
  margin-bottom: 28px;
}

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

.page-news__masthead-info {
  min-width: 0;
}

.page-news__title {
  font-size: clamp(2.2rem, 5.2vw, 4.4rem);
  font-weight: 200;
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--color-brown);
  max-width: 14em;
  text-wrap: balance;
  margin-top: 12px;
}

.page-news__lead {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-stone);
  max-width: 46em;
  margin-top: 18px;
  padding-left: 14px;
  border-left: 4px solid var(--color-orange);
}

.page-news__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-navy);
  letter-spacing: 0.08em;
  margin-top: 22px;
  text-transform: uppercase;
}

.page-news__vol {
  justify-self: start;
  min-width: 152px;
  background: var(--color-navy);
  color: var(--color-yellow);
  padding: 18px 16px 16px;
  font-family: var(--font-mono);
  text-align: center;
  clip-path: polygon(0 0, 100% 0, 100% 82%, 84% 100%, 0 100%);
  box-shadow: var(--shadow-hard);
}

.page-news__vol span {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  line-height: 1.6;
}

.page-news__vol strong {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.page-news__vol strong em {
  color: var(--color-orange);
  font-style: normal;
  font-size: 1.5rem;
}

.hero-banner {
  margin: 28px 0 0;
}

.hero-banner img {
  width: 100%;
  height: auto;
  box-shadow: var(--shadow-hard);
}

/* ===== 杂志整体布局 ===== */
.magazine-wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 48px 16px 96px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

.magazine-main {
  min-width: 0;
}

/* ===== 目录侧栏 ===== */
.magazine-rail {
  position: relative;
  border: 2px solid var(--color-brown);
  background: var(--color-sand);
  padding: 16px;
  box-shadow: var(--shadow-hard);
}

.magazine-rail__label {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--color-navy);
  border-bottom: 2px solid var(--color-brown);
  padding-bottom: 8px;
  margin-bottom: 8px;
}

.magazine-rail__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.magazine-rail__list li + li {
  border-top: 1px dashed var(--color-stone);
}

.magazine-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 4px;
  color: var(--color-brown);
  text-decoration: none;
  font-weight: 600;
  transition: padding-left 0.2s ease, background 0.2s ease;
}

.magazine-rail__list a span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-orange);
  font-weight: 700;
}

.magazine-rail__list a:hover {
  color: var(--color-orange);
  padding-left: 10px;
}

.magazine-rail__note,
.magazine-rail__coordinate {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-stone);
  line-height: 1.6;
}

.magazine-rail__note {
  margin-top: 12px;
}

.magazine-rail__coordinate {
  border-top: 1px dashed var(--color-stone);
  padding-top: 10px;
  margin-top: 14px;
}

.page-news:has(#section-latest:target) .magazine-rail__list a[href="#section-latest"],
.page-news:has(#section-special:target) .magazine-rail__list a[href="#section-special"],
.page-news:has(#section-changelog:target) .magazine-rail__list a[href="#section-changelog"] {
  background: var(--color-orange);
  color: var(--color-cream);
  padding-left: 10px;
}

.page-news:has(#section-latest:target) .magazine-rail__list a[href="#section-latest"] span,
.page-news:has(#section-special:target) .magazine-rail__list a[href="#section-special"] span,
.page-news:has(#section-changelog:target) .magazine-rail__list a[href="#section-changelog"] span {
  color: var(--color-yellow);
}

/* ===== 章节标头 ===== */
.section-header {
  margin-bottom: 32px;
}

.section-header__desc {
  color: var(--color-stone);
  line-height: 1.7;
  margin-top: 10px;
  max-width: 60ch;
}

/* ===== 最新文章列表 ===== */
.news-list {
  position: relative;
  margin-left: 18px;
}

.news-list::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 0;
  bottom: 0;
  width: 0;
  border-left: 2px dashed var(--color-sand);
}

.post-card {
  position: relative;
  border-bottom: 1px solid var(--color-sand);
  transition: background 0.25s ease;
}

.post-card::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 42px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-orange);
  border: 2px solid var(--color-cream);
  box-shadow: 0 0 0 2px var(--color-orange);
  z-index: 1;
}

.post-card:hover {
  background: var(--pn-sand-soft);
}

.post-card__head {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 20px 4px 20px 0;
  cursor: pointer;
}

.post-card__head::-webkit-details-marker {
  display: none;
}

.post-card__index {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 200;
  color: var(--color-orange);
  line-height: 1;
  min-width: 1.2em;
}

.post-card__date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-stone);
  border: 1px solid var(--color-sand);
  padding: 3px 7px;
  background: var(--color-cream);
}

.post-card__title {
  flex: 1 1 280px;
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.5;
  font-weight: 600;
  color: var(--color-brown);
}

.post-card__cat {
  margin-left: auto;
}

.post-card__icon {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--color-orange);
  line-height: 1;
  transition: transform 0.3s ease;
}

.post-card[open] .post-card__icon {
  transform: rotate(45deg);
}

.post-card__body {
  padding: 0 4px 24px clamp(2.6rem, 8vw, 6rem);
  color: var(--color-brown);
}

.post-card[open] .post-card__body {
  animation: pn-drop 0.3s ease-out;
}

.post-card__body p {
  line-height: 1.8;
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.post-card__more {
  display: inline-block;
  margin-top: 6px;
  color: var(--color-navy);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--color-orange);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  font-size: 0.88rem;
}

.post-card__more:hover {
  color: var(--color-orange);
}

@keyframes pn-drop {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.pn-keyword {
  background: linear-gradient(transparent 60%, rgba(242, 92, 5, 0.35) 60%);
  font-weight: 700;
}

/* ===== 专题合集 ===== */
.special-section {
  margin-top: 72px;
}

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

.special-card {
  display: flex;
  flex-direction: column;
  border: 2px solid var(--color-brown);
  background: var(--color-cream);
  box-shadow: var(--shadow-hard);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.special-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--color-brown);
}

.special-card__media {
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid var(--color-brown);
}

.special-card__media img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.special-card__media--square img {
  aspect-ratio: 1 / 1;
}

.special-card__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: 18px;
  background: var(--pn-navy-soft);
  color: var(--color-cream);
  font-size: 0.85rem;
  line-height: 1.6;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.special-card:hover .special-card__overlay,
.special-card:focus-within .special-card__overlay {
  opacity: 1;
}

.special-card__info {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  flex: 1;
}

.special-card__info h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
}

.special-card__info h3 a {
  color: inherit;
  text-decoration: none;
}

.special-card__info h3 a:hover {
  color: var(--color-orange);
}

.special-card__info p {
  font-size: 0.85rem;
  color: var(--color-stone);
  line-height: 1.65;
}

.special-card__link {
  margin-top: auto;
  color: var(--color-orange);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
}

.special-card__link:hover {
  color: var(--color-navy);
}

.special-card--panel {
  padding: 20px;
  justify-content: space-between;
  gap: 16px;
}

.special-card--panel .tag {
  align-self: flex-start;
}

.special-card__panel-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.special-card--navy {
  background-color: var(--color-navy);
  background-image:
    linear-gradient(rgba(245, 239, 224, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 239, 224, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--color-cream);
}

.special-card--navy .special-card__panel-body p {
  color: rgba(245, 239, 224, 0.72);
}

.special-card--navy .big-num {
  color: var(--color-yellow);
}

.special-card--navy .special-card__link {
  color: var(--color-yellow);
}

.special-card--navy .special-card__link:hover {
  color: var(--color-orange);
}

.special-card--navy .panel-cross {
  color: var(--color-yellow);
}

.special-card--sand {
  background-color: var(--color-sand);
  background-image:
    linear-gradient(rgba(43, 29, 20, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 29, 20, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--color-brown);
}

.special-card--sand .special-card__panel-body p {
  color: var(--color-stone);
}

.special-card--sand .big-num {
  color: var(--color-orange);
}

.special-card--sand .panel-cross {
  color: var(--color-orange);
  flex: none;
}

.special-card__panel-title {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
}

.special-card__panel-body p {
  font-size: 0.88rem;
  line-height: 1.65;
  margin-top: 8px;
}

.big-num {
  font-family: var(--font-mono);
  font-size: 4.4rem;
  font-weight: 200;
  line-height: 1;
  margin-top: 14px;
  text-align: right;
}

.big-num small {
  font-size: 1.8rem;
  color: var(--color-orange);
}

/* ===== 更新日志 ===== */
.changelog-section {
  margin-top: 72px;
}

.changelog-list {
  position: relative;
}

.changelog-item {
  position: relative;
  padding: 0 0 28px 28px;
  border-left: 2px solid var(--color-sand);
  margin-left: 8px;
}

.changelog-item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--color-yellow);
  border: 2px solid var(--color-brown);
  transform: rotate(45deg);
}

.changelog-item__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.changelog-item__version {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-navy);
  background: var(--color-cream);
  border: 2px solid var(--color-navy);
  padding: 3px 10px;
}

.changelog-item__version::after {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-yellow);
  margin-left: 9px;
  animation: pn-drip 2.6s ease-in-out infinite;
}

.changelog-item__time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-stone);
}

.changelog-item__content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 10px 0 4px;
}

.changelog-item__content p {
  font-size: 0.88rem;
  color: var(--color-stone);
  line-height: 1.7;
}

@keyframes pn-drip {
  0%,
  100% {
    opacity: 0.5;
    transform: scale(0.8);
    box-shadow: 0 0 0 0 rgba(255, 195, 0, 0.6);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
    box-shadow: 0 0 0 9px rgba(255, 195, 0, 0);
  }
}

.changelog-figure {
  margin: 40px 0 0;
}

.changelog-figure img {
  width: 100%;
  height: auto;
}

.changelog-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-stone);
  line-height: 1.6;
}

.changelog-more {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 40px;
}

/* ===== 中等屏适配 ===== */
@media (min-width: 720px) {
  .special-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ===== 桌面端布局 ===== */
@media (min-width: 900px) {
  .page-news__hero {
    padding: 48px 40px 0;
  }

  .page-news__masthead {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: start;
  }

  .page-news__vol {
    justify-self: end;
  }

  .page-news__title {
    max-width: 12em;
  }

  .magazine-wrap {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 56px;
    padding: 72px 40px 120px;
  }

  .magazine-rail {
    position: sticky;
    top: 28px;
  }

  .magazine-main {
    min-width: 0;
  }

  .news-list {
    margin-left: 10px;
  }
}

/* ===== 移动端目录横条 ===== */
@media (max-width: 899.98px) {
  .magazine-rail {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 14px;
  }

  .magazine-rail__label {
    margin: 0;
    padding: 0;
    border-bottom: none;
  }

  .magazine-rail__list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 10px;
  }

  .magazine-rail__list li + li {
    border-top: none;
  }

  .magazine-rail__list a {
    padding: 6px 4px;
    gap: 8px;
    font-weight: 600;
  }

  .magazine-rail__note,
  .magazine-rail__coordinate {
    display: none;
  }
}

/* ===== 减少动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    animation: none !important;
    transition: none !important;
  }
}