@import url('https://fonts.googleapis.com/css2?family=Abril+Fatface&family=Merriweather:wght@300;400;700&display=swap');

/* ===== 基础变量 ===== */
:root {
  --c-bg: #fafaf8;
  --c-mid: #4a4a4a;
  --c-ink: #1a1a1a;
  --c-accent: #c8001a;
  --c-surface: #f0efec;
  --c-border: #1a1a1a;
  --sidebar-w: 220px;
  --font-display: 'Abril Fatface', Georgia, serif;
  --font-body: 'Merriweather', 'Songti SC', Georgia, serif;
  --radius: 4px;
  --gap: 1.5rem;
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== 纸张肌理背景 ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.06'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* ===== 布局骨架 ===== */
.page-wrap {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* ===== 侧边栏 ===== */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--c-ink);
  color: var(--c-bg);
  display: flex;
  flex-direction: column;
  gap: 0;
  z-index: 100;
  border-right: 3px solid var(--c-ink);
}

.sidebar-brand {
  padding: 1.5rem 1.25rem 1rem;
  border-bottom: 1px solid rgba(250,250,248,0.15);
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--c-bg);
}

.site-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.logo-text-mark {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--c-bg);
  letter-spacing: -0.02em;
  line-height: 1;
  display: inline-block;
  transform: rotate(-2deg);
}

.sidebar nav {
  flex: 1;
  padding: 1rem 0;
}

.sidebar nav ul {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.sidebar nav ul li a {
  display: block;
  padding: 0.65rem 1.25rem;
  font-size: 0.82rem;
  font-weight: 400;
  line-height: 1.4;
  color: rgba(250,250,248,0.8);
  border-left: 3px solid transparent;
  transition: none;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.sidebar nav ul li a:hover,
.sidebar nav ul li a[aria-current="page"] {
  color: var(--c-bg);
  border-left-color: var(--c-accent);
  background: rgba(250,250,248,0.06);
}

.sidebar-back, .sidebar-related {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid rgba(250,250,248,0.12);
  font-size: 0.78rem;
}

.back-link {
  color: rgba(250,250,248,0.7);
  display: block;
  padding: 0.4rem 0;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.back-link:hover { color: var(--c-bg); }

.sidebar-section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(250,250,248,0.4);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.related-link {
  display: block;
  font-size: 0.78rem;
  color: rgba(250,250,248,0.65);
  padding: 0.3rem 0;
  border-bottom: 1px dashed rgba(250,250,248,0.1);
  line-height: 1.4;
  min-height: 36px;
  display: flex;
  align-items: center;
}

.related-link:hover { color: var(--c-bg); }

.sidebar-cta {
  padding: 1rem 1.25rem 1.5rem;
  border-top: 1px solid rgba(250,250,248,0.12);
}

/* ===== 主内容列 ===== */
.main-col {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ===== main > article > section ===== */
main {
  flex: 1;
}

main > article {
  /* 直接子元素 */
}

main > article > section {
  /* 直接子元素 */
}

/* ===== 按钮 ===== */
.btn-cta {
  display: inline-block;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.65rem 1.25rem;
  border: 2px solid var(--c-ink);
  border-radius: var(--radius);
  cursor: pointer;
  min-height: 40px;
  line-height: 1.3;
  white-space: nowrap;
  transform: rotate(-0.5deg);
  box-shadow: 3px 3px 0 var(--c-ink);
  transition: none;
}

.btn-cta:hover {
  transform: rotate(0.5deg) translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--c-ink);
}

.btn-hero {
  font-size: 1rem;
  padding: 0.8rem 2rem;
  margin-top: 1.5rem;
}

/* ===== Hero（首页）===== */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  border-bottom: 3px solid var(--c-ink);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,26,26,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,26,26,0.07) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.hero-inner {
  display: flex;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-media {
  width: 48%;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--c-surface);
  position: relative;
}

.hero-media--empty {
  background:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 20px,
      rgba(26,26,26,0.04) 20px,
      rgba(26,26,26,0.04) 21px
    ),
    var(--c-surface);
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 2.5rem;
}

.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--c-mid);
  text-transform: uppercase;
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--c-accent);
  vertical-align: middle;
  margin-right: 0.5rem;
}

.hero-h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.1;
  color: var(--c-ink);
  transform: rotate(-1deg);
  display: inline-block;
}

.hero-desc {
  margin-top: 1rem;
  font-size: 1rem;
  color: var(--c-mid);
  max-width: 36ch;
  font-weight: 300;
}

/* ===== 分类网格（首页）===== */
.cats-section {
  padding: 3rem 2.5rem;
  border-top: 3px solid var(--c-ink);
}

.cats-section h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  margin-bottom: 0.25rem;
}

.cats-section hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin-bottom: 2rem;
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.cat-block {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--c-surface);
  border: 2px solid var(--c-ink);
  border-radius: var(--radius);
  padding: 1.25rem;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--c-ink);
  transform: rotate(0deg);
  transition: none;
  min-height: 40px;
}

.cat-block:hover {
  transform: rotate(-0.8deg) translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--c-ink);
}

.cat-block strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--c-ink);
  display: block;
}

.cat-block span {
  font-size: 0.82rem;
  color: var(--c-mid);
  line-height: 1.5;
}

.cat-count {
  font-size: 0.72rem !important;
  color: var(--c-accent) !important;
  font-weight: 700;
  margin-top: auto;
}

/* ===== 内容区（content-section）===== */
.content-section {
  padding: 2.5rem 2.5rem;
  border-bottom: 2px solid rgba(26,26,26,0.12);
}

/* ===== 正文排版 ===== */
.prose {
  max-width: 72ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-ink);
}

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.25rem;
}

.prose h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.1rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.prose hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin: 0.25rem 0 1.25rem;
}

.prose p {
  margin-bottom: 1rem;
}

.prose ul, .prose ol {
  margin: 0.75rem 0 1rem 1.5rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose a:hover {
  color: var(--c-ink);
}

.prose strong {
  font-weight: 700;
}

.prose table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.9rem;
}

.prose th, .prose td {
  border: 1px solid var(--c-ink);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.prose th {
  background: var(--c-ink);
  color: var(--c-bg);
  font-weight: 700;
}

/* ===== 页头 article（category/entry）===== */
.page-header-section {
  padding: 3rem 2.5rem 2rem;
  border-bottom: 3px solid var(--c-ink);
  position: relative;
  overflow: hidden;
}

.page-header-inner {
  position: relative;
  z-index: 1;
}

.grid-deco {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,26,26,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,26,26,0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.cat-eyebrow, .privacy-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #fff;
  background: var(--c-ink);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  margin-bottom: 0.75rem;
}

.page-header-section h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.15;
  transform: rotate(-0.5deg);
  display: inline-block;
  margin-bottom: 0.75rem;
}

.page-header-desc {
  font-size: 1rem;
  color: var(--c-mid);
  max-width: 60ch;
  font-weight: 300;
}

/* ===== 条目列表（category）===== */
.entries-section {
  padding: 2.5rem 2.5rem;
  border-top: 2px solid rgba(26,26,26,0.1);
}

.entries-section h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin-bottom: 0.25rem;
}

.entries-section hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin-bottom: 1.5rem;
}

.entries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.entry-block {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: #fff;
  border: 2px solid var(--c-ink);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: 3px 3px 0 var(--c-ink);
  transition: none;
  min-height: 40px;
}

.entry-block:hover {
  transform: rotate(-0.5deg) translate(-1px, -1px);
  box-shadow: 5px 5px 0 var(--c-ink);
}

.entry-block strong {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-ink);
  display: block;
  line-height: 1.35;
}

.entry-desc {
  font-size: 0.82rem;
  color: var(--c-mid);
  line-height: 1.5;
}

.card-date {
  font-size: 0.72rem;
  color: var(--c-mid);
  margin-top: auto;
  opacity: 0.7;
}

/* ===== 同级分类 ===== */
.siblings-section {
  padding: 2rem 2.5rem;
  border-top: 2px solid rgba(26,26,26,0.08);
}

.siblings-section h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}

.siblings-section hr {
  border: none;
  border-top: 1px solid var(--c-ink);
  margin-bottom: 1rem;
}

.sibling-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.sibling-link {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border: 2px solid var(--c-ink);
  border-radius: var(--radius);
  font-size: 0.85rem;
  background: var(--c-surface);
  box-shadow: 2px 2px 0 var(--c-ink);
  min-height: 40px;
}

.sibling-link strong {
  font-weight: 600;
}

.sibling-link:hover {
  background: var(--c-ink);
  color: var(--c-bg);
}

/* ===== Entry 页头 ===== */
.entry-header-section {
  padding: 2.5rem 2.5rem 1.5rem;
  border-bottom: 3px solid var(--c-ink);
}

.breadcrumb {
  font-size: 0.78rem;
  color: var(--c-mid);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.entry-header-section h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.6rem);
  line-height: 1.2;
  transform: rotate(-0.3deg);
  display: inline-block;
  margin-bottom: 0.75rem;
}

.entry-lead {
  font-size: 1.05rem;
  color: var(--c-mid);
  max-width: 64ch;
  font-weight: 300;
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

.entry-meta {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--c-mid);
  margin-bottom: 1rem;
}

.entry-pub-date, .entry-mod-date {
  opacity: 0.8;
}

.entry-hero-wrap {
  margin-top: 1.25rem;
  border: 2px solid var(--c-ink);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 640px;
  box-shadow: 4px 4px 0 var(--c-ink);
}

.entry-hero-img {
  width: 100%;
  height: auto;
  display: block;
}

.entry-body-section {
  padding: 2.5rem 2.5rem;
}

.entry-related-section {
  padding: 2rem 2.5rem;
  border-top: 2px solid rgba(26,26,26,0.1);
  background: var(--c-surface);
}

.entry-related-section h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.entry-related-section hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin-bottom: 1.25rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.related-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: #fff;
  border: 2px solid var(--c-ink);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: 2px 2px 0 var(--c-ink);
  font-size: 0.85rem;
  min-height: 40px;
}

.related-block:hover {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--c-ink);
}

.related-block strong {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--c-ink);
}

.related-block span {
  color: var(--c-mid);
  font-size: 0.78rem;
  line-height: 1.4;
}

/* ===== About ===== */
.about-header-section {
  padding: 3rem 2.5rem 2rem;
  border-bottom: 3px solid var(--c-ink);
  position: relative;
}

.about-stamp {
  position: absolute;
  top: 1.5rem;
  right: 2rem;
  font-family: var(--font-display);
  font-size: 5rem;
  color: rgba(26,26,26,0.05);
  transform: rotate(-8deg);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.about-header-section h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.2;
  margin-bottom: 0.5rem;
  transform: rotate(-0.5deg);
  display: inline-block;
}

.about-date {
  font-size: 0.78rem;
  color: var(--c-mid);
  margin-bottom: 0.75rem;
}

.about-lead {
  font-size: 1rem;
  color: var(--c-mid);
  max-width: 60ch;
  font-weight: 300;
}

.about-body-section {
  padding: 2.5rem 2.5rem;
}

.about-body-section h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.about-body-section hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin-bottom: 1.5rem;
}

.about-nav-section {
  padding: 2rem 2.5rem;
  border-top: 2px solid rgba(26,26,26,0.1);
  background: var(--c-surface);
}

.about-nav-section h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.about-nav-section hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin-bottom: 1.25rem;
}

.about-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.about-nav-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.1rem;
  background: #fff;
  border: 2px solid var(--c-ink);
  border-radius: var(--radius);
  box-shadow: 3px 3px 0 var(--c-ink);
  font-size: 0.85rem;
  min-height: 40px;
}

.about-nav-block:hover {
  transform: rotate(-0.5deg) translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--c-ink);
}

.about-nav-block strong {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--c-ink);
}

.about-nav-block span {
  color: var(--c-mid);
  font-size: 0.78rem;
  line-height: 1.4;
}

/* ===== Privacy ===== */
.privacy-header-section {
  padding: 3rem 2.5rem 2rem;
  border-bottom: 3px solid var(--c-ink);
}

.privacy-header-section h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.2;
  margin-bottom: 0.5rem;
  display: inline-block;
  transform: rotate(-0.3deg);
}

.privacy-date {
  font-size: 0.78rem;
  color: var(--c-mid);
  margin-bottom: 0.75rem;
  display: block;
}

.privacy-lead {
  font-size: 1rem;
  color: var(--c-mid);
  max-width: 60ch;
  font-weight: 300;
}

.privacy-body-section {
  padding: 2.5rem 2.5rem;
}

.privacy-body-section h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.privacy-body-section hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin-bottom: 1.5rem;
}

.privacy-links-section {
  padding: 2rem 2.5rem;
  border-top: 2px solid rgba(26,26,26,0.1);
}

.privacy-links-section h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 0.25rem;
}

.privacy-links-section hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin-bottom: 1rem;
}

.privacy-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.privacy-links-list li a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 0.95rem;
  min-height: 40px;
  display: flex;
  align-items: center;
}

/* ===== h2/h3 后的 hr ===== */
h2 + hr, h3 + hr {
  border: none;
  border-top: 2px solid var(--c-ink);
  margin: 0.2rem 0 1.25rem;
}

/* ===== 子页并列块（首页/about）===== */
.cat-grid > .cat-block > strong,
.entries-grid > .entry-block > strong,
.about-nav-grid > .about-nav-block > strong {
  /* already handled */
}

/* ===== 页脚 ===== */
footer {
  background: var(--c-ink);
  color: var(--c-bg);
  border-top: 3px solid var(--c-ink);
}

.footer-cta-block {
  padding: 2.5rem 2.5rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  border-bottom: 1px solid rgba(250,250,248,0.12);
  flex-wrap: wrap;
}

.footer-cta-label {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--c-bg);
  flex: 1;
  min-width: 140px;
}

footer address {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  font-style: normal;
  font-size: 0.82rem;
  color: rgba(250,250,248,0.7);
  border-bottom: 1px solid rgba(250,250,248,0.1);
}

footer address a {
  color: rgba(250,250,248,0.8);
  text-decoration: underline;
  text-underline-offset: 3px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

footer address a:hover { color: var(--c-bg); }

footer > ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  padding: 0.75rem 2.5rem;
  border-bottom: 1px solid rgba(250,250,248,0.08);
}

footer > ul > li > a {
  font-size: 0.82rem;
  color: rgba(250,250,248,0.65);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

footer > ul > li > a:hover { color: var(--c-bg); }

.footer-copy {
  padding: 0.75rem 2.5rem;
  font-size: 0.72rem;
  color: rgba(250,250,248,0.4);
}

/* ===== 空提示 ===== */
.empty-tip {
  font-size: 0.9rem;
  color: var(--c-mid);
  padding: 1rem 0;
}

/* ===== Scroll Reveal 动效 ===== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn-cta { transform: none !important; }
  .cat-block:hover, .entry-block:hover, .about-nav-block:hover { transform: none; }
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  :root { --sidebar-w: 180px; }

  .hero-inner {
    flex-direction: column;
  }

  .hero-media {
    width: 100%;
    height: 200px;
  }

  .hero-text {
    padding: 2rem 1.5rem;
  }

  .content-section,
  .cats-section,
  .page-header-section,
  .entries-section,
  .siblings-section,
  .entry-header-section,
  .entry-body-section,
  .entry-related-section,
  .about-header-section,
  .about-body-section,
  .about-nav-section,
  .privacy-header-section,
  .privacy-body-section,
  .privacy-links-section {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .footer-cta-block,
  footer address,
  footer > ul,
  .footer-copy {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

@media (max-width: 640px) {
  :root { --sidebar-w: 0px; }

  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 3px solid var(--c-ink);
    overflow: visible;
  }

  .sidebar-brand {
    padding: 0.75rem 1rem;
    border-bottom: none;
    border-right: 1px solid rgba(250,250,248,0.15);
  }

  .sidebar nav {
    flex: 1;
    padding: 0;
    overflow-x: auto;
  }

  .sidebar nav ul {
    flex-direction: row;
    flex-wrap: nowrap;
  }

  .sidebar nav ul li a {
    padding: 0.75rem 0.85rem;
    font-size: 0.78rem;
    border-left: none;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    min-height: 44px;
  }

  .sidebar nav ul li a:hover,
  .sidebar nav ul li a[aria-current="page"] {
    border-left-color: transparent;
    border-bottom-color: var(--c-accent);
  }

  .sidebar-cta {
    padding: 0.75rem 1rem;
    border-top: none;
    border-left: 1px solid rgba(250,250,248,0.15);
    display: flex;
    align-items: center;
  }

  .sidebar-back, .sidebar-related {
    display: none;
  }

  .main-col {
    margin-left: 0;
  }

  .hero-section {
    min-height: auto;
  }

  .hero-media {
    height: 160px;
  }

  .hero-text {
    padding: 1.5rem 1.25rem;
  }

  .hero-h1 {
    font-size: 1.8rem;
  }

  .hero-eyebrow {
    font-size: 0.65rem;
  }

  .content-section,
  .cats-section,
  .page-header-section,
  .entries-section,
  .siblings-section,
  .entry-header-section,
  .entry-body-section,
  .entry-related-section,
  .about-header-section,
  .about-body-section,
  .about-nav-section,
  .privacy-header-section,
  .privacy-body-section,
  .privacy-links-section {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .footer-cta-block,
  footer address,
  footer > ul,
  .footer-copy {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .cat-grid, .entries-grid, .related-grid, .about-nav-grid {
    grid-template-columns: 1fr;
  }

  .footer-cta-block {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .about-stamp {
    font-size: 3rem;
    top: 1rem;
    right: 1rem;
  }

  .page-header-section h1,
  .entry-header-section h1,
  .about-header-section h1,
  .privacy-header-section h1 {
    font-size: 1.7rem;
  }

  .sibling-list {
    flex-direction: column;
  }
}