@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600&family=Cormorant+Garamond:ital,wght@0,300;0,500;0,700;1,300;1,500&family=Crimson+Pro:ital,wght@0,300;0,400;0,600;1,300;1,400&display=swap');

/* ===== 变量 ===== */
:root {
  --c-primary: #6514ff;
  --c-secondary: #bf00ff;
  --c-dark: #1c1726;
  --c-dark2: #251e35;
  --c-dark3: #2e2445;
  --c-light: #f0eaff;
  --c-light2: #e0d4ff;
  --c-text: #e8e0ff;
  --c-text-muted: #a890cc;
  --c-accent: #ff3dff;
  --c-white: #ffffff;
  --font-display: 'Cormorant Garamond', 'Crimson Pro', Georgia, serif;
  --font-body: 'Crimson Pro', 'Georgia', serif;
  --font-ui: 'Cinzel', var(--font-display);
  --radius: 0px;
  --gap-sm: 16px;
  --gap-md: 32px;
  --gap-lg: 48px;
  --gap-xl: 72px;
  --max-w: 1200px;
  --nav-h: 112px;
  --transition: 200ms cubic-bezier(0.4,0,0.2,1);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--c-dark);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-light2); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-accent); }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: inherit; }

/* ===== 动态背景纹理 ===== */
.site-wrap {
  position: relative;
  background: var(--c-dark);
}
.site-wrap::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 60px,
      rgba(101, 20, 255, 0.04) 60px,
      rgba(101, 20, 255, 0.04) 61px
    ),
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 60px,
      rgba(191, 0, 255, 0.03) 60px,
      rgba(191, 0, 255, 0.03) 61px
    );
  pointer-events: none;
  z-index: 0;
  animation: patternShift 20s linear infinite;
}
@keyframes patternShift {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 120px 120px, -120px 120px; }
}

/* ===== 全局布局辅助 ===== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gap-md);
  position: relative;
  z-index: 1;
}

/* ===== Header / 品牌栏 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-dark);
  border-bottom: 2px solid var(--c-primary);
}
.brand-bar {
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-secondary) 100%);
  padding: 12px var(--gap-md);
  display: flex;
  align-items: center;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.logo-mark {
  height: 36px;
  width: auto;
}
.brand-name {
  font-family: var(--font-ui);
  font-size: 22px;
  font-weight: 600;
  color: var(--c-white);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ===== 主导航 ===== */
.main-nav {
  background: var(--c-dark2);
  padding: 0 var(--gap-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  align-items: stretch;
}
.nav-list dt.nav-label {
  display: none;
}
.nav-list dd {
  display: flex;
}
.nav-list dd a {
  display: flex;
  align-items: center;
  padding: 14px 18px;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-text-muted);
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  min-height: 46px;
}
.nav-list dd a:hover {
  color: var(--c-secondary);
  border-bottom-color: var(--c-secondary);
  background: rgba(191,0,255,0.08);
}

/* ===== Hero 区（首页）===== */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--c-dark);
}
.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 60vh;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-text {
  padding: var(--gap-xl) var(--gap-lg) var(--gap-xl) var(--gap-md);
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--gap-sm);
}
.hero-eyebrow {
  display: inline-block;
}
.hero-eyebrow span {
  background: var(--c-primary);
  color: var(--c-white);
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.15em;
  padding: 4px 14px;
  text-transform: uppercase;
}
.hero-h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-white);
  max-width: 560px;
}
.hero-sub {
  font-size: 18px;
  color: var(--c-text-muted);
  max-width: 480px;
  line-height: 1.6;
}
.hero-fig {
  margin: 0;
  overflow: hidden;
  position: relative;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 400px;
}
.hero-placeholder {
  width: 100%;
  min-height: 400px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-secondary) 100%);
  position: relative;
}
.hero-placeholder::after {
  content: '';
  position: absolute;
  inset: 20px;
  border: 2px solid rgba(255,255,255,0.2);
}
/* 斜切色带 */
.hero-slash {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--c-dark);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  z-index: 3;
}
.hero-section::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-secondary) 100%);
  clip-path: polygon(10% 0, 100% 0, 100% 100%, 0% 100%);
  z-index: 1;
  opacity: 0.15;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  color: var(--c-white);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  min-height: 48px;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(101,20,255,0.5);
  color: var(--c-white);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  border: 2px solid var(--c-primary);
  color: var(--c-light2);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: background var(--transition), color var(--transition);
  min-height: 44px;
}
.btn-secondary:hover {
  background: var(--c-primary);
  color: var(--c-white);
}

/* ===== 通用 section 标题 ===== */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.2;
  margin-bottom: var(--gap-md);
  position: relative;
}
.section-title span {
  display: inline;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-title--sm {
  font-size: clamp(22px, 3vw, 34px);
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  margin-top: 10px;
}

/* ===== Aside 通用 ===== */
.aside-title {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-secondary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(191,0,255,0.3);
}
.aside-title span { display: inline; }
.aside-subtitle {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  margin: 24px 0 12px;
}
.aside-subtitle span { display: inline; }
.aside-nav-list li {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.aside-nav-list li a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--c-text-muted);
  transition: color var(--transition), padding-left var(--transition);
}
.aside-nav-list li a:hover {
  color: var(--c-secondary);
  padding-left: 8px;
}
.aside-cat-list li { border-bottom: 1px solid rgba(255,255,255,0.06); }
.aside-cat-list li a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--c-text-muted);
}
.aside-cat-list li a:hover { color: var(--c-secondary); }

/* ===== 首页分类区 ===== */
.categories-section {
  padding: var(--gap-lg) var(--gap-md);
  background: var(--c-dark2);
  position: relative;
  z-index: 1;
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.cat-item {}
.cat-link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 20px;
  background: var(--c-dark3);
  border: 1px solid rgba(101,20,255,0.3);
  border-left: 4px solid var(--c-primary);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  min-height: 96px;
}
.cat-link:hover {
  border-left-color: var(--c-secondary);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(101,20,255,0.3);
  color: var(--c-text);
}
.cat-label {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.3;
}
.cat-link small {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.5;
}

/* ===== 首页文章卡片区 ===== */
.articles-section {
  padding: var(--gap-lg) var(--gap-md);
  position: relative;
  z-index: 1;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--gap-md);
}
.card {
  background: var(--c-dark2);
  border: 1px solid rgba(101,20,255,0.25);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(101,20,255,0.35);
  border-color: var(--c-secondary);
}
.card-link {
  display: block;
  height: 100%;
  color: var(--c-text);
}
.card-fig {
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}
.card:hover .card-thumb { transform: scale(1.04); }
.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.card-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.4;
}
.card-title span { display: inline; }
.card-date {
  font-size: 13px;
  color: var(--c-text-muted);
  font-family: var(--font-ui);
  letter-spacing: 0.05em;
}
.card-desc {
  font-size: 15px;
  color: var(--c-text-muted);
  line-height: 1.6;
}

/* ===== 首页内容区（正文 + 侧边栏）===== */
.home-body {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  position: relative;
  z-index: 1;
}
.home-aside {
  position: sticky;
  top: calc(var(--nav-h) + 16px);
  align-self: start;
  background: var(--c-dark2);
  padding: 24px;
  border: 1px solid rgba(101,20,255,0.2);
  border-top: 3px solid var(--c-primary);
}
.home-main-content {
  min-width: 0;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  margin-bottom: 16px;
}
.breadcrumb a {
  color: var(--c-text-muted);
}
.breadcrumb a:hover { color: var(--c-secondary); }
.breadcrumb span { margin: 0 6px; opacity: 0.5; }

/* ===== 页面 Hero（非首页）===== */
.page-hero {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  background: linear-gradient(135deg, var(--c-dark2) 0%, var(--c-dark) 100%);
  border-bottom: 2px solid rgba(101,20,255,0.3);
  position: relative;
  z-index: 1;
}
.page-hero--cat {
  border-left: 6px solid var(--c-primary);
}
.page-hero--tag {
  border-left: 6px solid var(--c-secondary);
}
.page-hero-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.2;
}
.page-sub {
  font-size: 18px;
  color: var(--c-text-muted);
  max-width: 600px;
  line-height: 1.65;
}
.page-hero-aside {
  background: var(--c-dark3);
  padding: 24px;
  border: 1px solid rgba(191,0,255,0.2);
  align-self: start;
}
.page-hero-fig {
  display: none;
}

/* ===== 栏目页正文区 ===== */
.cat-body {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  position: relative;
  z-index: 1;
}
.cat-aside {
  position: sticky;
  top: calc(var(--nav-h) + 16px);
  align-self: start;
  background: var(--c-dark2);
  padding: 24px;
  border: 1px solid rgba(101,20,255,0.2);
  border-top: 3px solid var(--c-secondary);
}
.cat-main { min-width: 0; }

/* ===== 子页列表 ===== */
.child-list-wrap {
  margin-top: var(--gap-lg);
  padding-top: var(--gap-md);
  border-top: 1px solid rgba(101,20,255,0.2);
}
.child-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.child-item {
  background: var(--c-dark2);
  border: 1px solid rgba(101,20,255,0.2);
  transition: border-color var(--transition), transform var(--transition);
}
.child-item:hover {
  border-color: var(--c-secondary);
  transform: translateX(4px);
}
.child-link {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  color: var(--c-text);
}
.child-fig {
  margin: 0;
  flex-shrink: 0;
  width: 120px;
  overflow: hidden;
}
.list-thumb {
  width: 120px;
  height: 80px;
  object-fit: cover;
}
.child-num {
  font-family: var(--font-ui);
  font-size: 32px;
  font-weight: 600;
  color: rgba(101,20,255,0.4);
  flex-shrink: 0;
  line-height: 1;
  padding-top: 4px;
  min-width: 48px;
}
.child-info { flex: 1; min-width: 0; }
.child-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 8px;
  line-height: 1.4;
}
.child-title span { display: inline; }
.child-desc {
  font-size: 15px;
  color: var(--c-text-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}
.child-date {
  font-size: 13px;
  color: var(--c-text-muted);
  font-family: var(--font-ui);
}

/* ===== 文章页 ===== */
.article-main { position: relative; z-index: 1; }
.article-header-section {
  display: grid;
  grid-template-columns: 1fr auto 280px;
  gap: var(--gap-lg);
  align-items: start;
  padding: var(--gap-lg) var(--gap-md) var(--gap-md);
  background: linear-gradient(160deg, var(--c-dark2) 0%, var(--c-dark) 60%);
  border-bottom: 1px solid rgba(101,20,255,0.2);
}
.article-meta {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.article-h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.5vw, 52px);
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.2;
}
.article-dateline {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.article-date {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--c-secondary);
  letter-spacing: 0.06em;
}
.article-modified {
  font-size: 13px;
  color: var(--c-text-muted);
}
.article-hero-fig {
  margin: 0;
  overflow: hidden;
  width: 280px;
  flex-shrink: 0;
}
.article-hero-img {
  width: 280px;
  height: 186px;
  object-fit: cover;
}
.article-toc-aside {
  background: var(--c-dark3);
  padding: 24px;
  border: 1px solid rgba(191,0,255,0.2);
  border-top: 3px solid var(--c-secondary);
}
.article-body-section {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  align-items: start;
}
.article-content {
  min-width: 0;
  max-width: 760px;
}
.article-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 16px);
  align-self: start;
  background: var(--c-dark2);
  padding: 24px;
  border: 1px solid rgba(101,20,255,0.2);
  border-top: 3px solid var(--c-primary);
}
.sidebar-list { display: flex; flex-direction: column; gap: 4px; }
.sidebar-list li { border-bottom: 1px solid rgba(255,255,255,0.06); }
.sidebar-list li a {
  display: block;
  padding: 9px 0;
  font-size: 15px;
  color: var(--c-text-muted);
  transition: color var(--transition), padding-left var(--transition);
}
.sidebar-list li a:hover { color: var(--c-secondary); padding-left: 6px; }
.article-footer-section {
  padding: var(--gap-md) var(--gap-md) var(--gap-lg);
  position: relative;
}
.article-deco {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), transparent);
  margin: 0;
}
.article-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 标签页 ===== */
.tag-body {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  position: relative;
  z-index: 1;
}
.tag-aside {
  position: sticky;
  top: calc(var(--nav-h) + 16px);
  align-self: start;
  background: var(--c-dark2);
  padding: 24px;
  border: 1px solid rgba(191,0,255,0.2);
  border-top: 3px solid var(--c-secondary);
}
.tag-main { min-width: 0; }
.tag-results { margin-top: var(--gap-lg); }
.tag-result-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.tag-result-item {
  background: var(--c-dark2);
  border: 1px solid rgba(101,20,255,0.2);
  transition: border-color var(--transition), transform var(--transition);
}
.tag-result-item:hover {
  border-color: var(--c-secondary);
  transform: translateX(4px);
}
.tag-result-link {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 20px;
  color: var(--c-text);
}
.item-num {
  font-family: var(--font-ui);
  font-size: 28px;
  font-weight: 600;
  color: rgba(191,0,255,0.35);
  flex-shrink: 0;
  line-height: 1;
  padding-top: 4px;
  min-width: 44px;
}
.item-info { flex: 1; min-width: 0; }
.item-title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 6px;
}
.item-title span { display: inline; }
.item-desc { font-size: 15px; color: var(--c-text-muted); line-height: 1.6; }
.item-date { font-size: 13px; color: var(--c-text-muted); display: block; margin-top: 6px; }
.aside-tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.aside-tag-list li {}

/* ===== 标签 chip ===== */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.tag-list li {}
.tag-chip {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(101,20,255,0.2);
  border: 1px solid var(--c-primary);
  color: var(--c-light2);
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: background var(--transition), border-color var(--transition);
}
.tag-chip:hover {
  background: var(--c-primary);
  color: var(--c-white);
  border-color: var(--c-secondary);
}

/* ===== About 页 ===== */
.about-hero {
  display: grid;
  grid-template-columns: 1fr auto 280px;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  background: var(--c-dark2);
  border-bottom: 1px solid rgba(101,20,255,0.2);
  position: relative;
  z-index: 1;
  overflow: hidden;
}
.about-hero-text {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.about-hero-shape {
  width: 120px;
  align-self: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  height: 120px;
  margin: 0;
  flex-shrink: 0;
  animation: spinSlow 12s linear infinite;
}
@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.about-hero-aside {
  background: var(--c-dark3);
  padding: 24px;
  border: 1px solid rgba(191,0,255,0.2);
  align-self: start;
}
.about-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  position: relative;
  z-index: 1;
}
.about-content { min-width: 0; }
.about-aside {
  position: sticky;
  top: calc(var(--nav-h) + 16px);
  align-self: start;
  background: var(--c-dark2);
  padding: 24px;
  border: 1px solid rgba(101,20,255,0.2);
  border-top: 3px solid var(--c-primary);
}

/* ===== Privacy 页 ===== */
.privacy-header {
  display: grid;
  grid-template-columns: 1fr auto 280px;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  background: var(--c-dark2);
  border-bottom: 1px solid rgba(101,20,255,0.2);
  position: relative;
  z-index: 1;
}
.privacy-header-text {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.privacy-updated {
  font-size: 14px;
  color: var(--c-text-muted);
  font-family: var(--font-ui);
  letter-spacing: 0.06em;
}
.privacy-deco {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  margin: 0;
  align-self: center;
  flex-shrink: 0;
}
.privacy-aside-header {
  background: var(--c-dark3);
  padding: 24px;
  border: 1px solid rgba(191,0,255,0.2);
  align-self: start;
}
.privacy-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  position: relative;
  z-index: 1;
}
.privacy-content { min-width: 0; }
.privacy-aside {
  position: sticky;
  top: calc(var(--nav-h) + 16px);
  align-self: start;
  background: var(--c-dark2);
  padding: 24px;
  border: 1px solid rgba(101,20,255,0.2);
  border-top: 3px solid var(--c-secondary);
}

/* ===== Default 页 ===== */
.default-body {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
  position: relative;
  z-index: 1;
}
.default-aside {
  position: sticky;
  top: calc(var(--nav-h) + 16px);
  align-self: start;
  background: var(--c-dark2);
  padding: 24px;
  border: 1px solid rgba(101,20,255,0.2);
  border-top: 3px solid var(--c-primary);
}
.default-content { min-width: 0; }

/* ===== page.content 正文排版 ===== */
.page-content,
.article-content {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.8;
  color: var(--c-text);
}
.page-content h2,
.article-content h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  color: var(--c-white);
  margin: 2em 0 0.6em;
  padding-left: 12px;
  border-left: 4px solid var(--c-primary);
}
.page-content h3,
.article-content h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 700;
  color: var(--c-light2);
  margin: 1.6em 0 0.5em;
}
.page-content p,
.article-content p {
  margin-bottom: 1.2em;
}
.page-content ul,
.page-content ol,
.article-content ul,
.article-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.2em;
}
.page-content ul { list-style: disc; }
.page-content ol { list-style: decimal; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.page-content li,
.article-content li {
  margin-bottom: 0.4em;
}
.page-content a,
.article-content a {
  color: var(--c-secondary);
  text-decoration: underline;
  text-decoration-color: rgba(191,0,255,0.4);
}
.page-content a:hover,
.article-content a:hover {
  color: var(--c-accent);
  text-decoration-color: var(--c-accent);
}
.page-content strong,
.article-content strong {
  color: var(--c-white);
  font-weight: 600;
}
.page-content blockquote,
.article-content blockquote {
  border-left: 4px solid var(--c-secondary);
  padding: 12px 20px;
  margin: 1.5em 0;
  background: rgba(191,0,255,0.06);
  color: var(--c-text-muted);
  font-style: italic;
}
.page-content code,
.article-content code {
  background: rgba(101,20,255,0.15);
  padding: 2px 6px;
  font-size: 0.9em;
  border: 1px solid rgba(101,20,255,0.3);
}
.page-content table,
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5em;
  font-size: 16px;
}
.page-content th,
.article-content th {
  background: var(--c-primary);
  color: var(--c-white);
  padding: 10px 14px;
  text-align: left;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.06em;
}
.page-content td,
.article-content td {
  padding: 10px 14px;
  border-bottom: 1px solid rgba(101,20,255,0.15);
  color: var(--c-text-muted);
}
.page-content tr:hover td,
.article-content tr:hover td {
  background: rgba(101,20,255,0.05);
}

/* ===== 装饰区块 ===== */
.section-deco {
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), transparent);
  margin: 0 0 var(--gap-md);
  border: none;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--c-dark2);
  border-top: 2px solid rgba(101,20,255,0.4);
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 2fr;
  grid-template-rows: auto auto;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md) 0;
  position: relative;
  z-index: 1;
}
.footer-brand { grid-column: 1; }
.footer-nav-section { grid-column: 2; }
.footer-tags-section { grid-column: 3; }
.footer-contact-section { grid-column: 4; }
.footer-bar {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(101,20,255,0.2);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-bar p {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--c-text-muted);
  letter-spacing: 0.05em;
  text-align: center;
}
.footer-bar a {
  color: var(--c-text-muted);
}
.footer-bar a:hover { color: var(--c-secondary); }
.footer-logo-text {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 12px;
}
.footer-logo-text span {
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-desc {
  font-size: 15px;
  color: var(--c-text-muted);
  line-height: 1.7;
}
.footer-nav-title {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-secondary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(191,0,255,0.25);
}
.footer-nav-title span { display: inline; }
.footer-nav-dl dt {
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.3);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.footer-nav-dl dd { margin-bottom: 4px; }
.footer-nav-dl dd a {
  font-size: 14px;
  color: var(--c-text-muted);
  display: inline-flex;
  align-items: center;
  padding: 5px 0;
  min-height: 32px;
  transition: color var(--transition);
}
.footer-nav-dl dd a:hover { color: var(--c-secondary); }

/* ===== 订阅表单 ===== */
.form-label {
  display: block;
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  margin-bottom: 10px;
}
.form-row {
  display: flex;
  gap: 0;
}
.form-input {
  flex: 1;
  padding: 12px 14px;
  background: var(--c-dark3);
  border: 1px solid rgba(101,20,255,0.4);
  border-right: none;
  color: var(--c-text);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition);
  min-height: 44px;
}
.form-input::placeholder { color: rgba(255,255,255,0.25); }
.form-input:focus { border-color: var(--c-secondary); }
.btn-form {
  padding: 12px 20px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  color: var(--c-white);
  border: none;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity var(--transition);
  min-height: 44px;
  white-space: nowrap;
}
.btn-form:hover { opacity: 0.85; }

/* ===== Scroll Reveal ===== */
.reveal-item {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 300ms ease, transform 300ms ease;
}
.reveal-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 移动端断点 ===== */
@media (max-width: 900px) {
  .site-footer {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand { grid-column: 1; }
  .footer-nav-section { grid-column: 2; }
  .footer-tags-section { grid-column: 1; }
  .footer-contact-section { grid-column: 2; }
  .footer-bar { grid-column: 1 / -1; }

  .hero-content {
    grid-template-columns: 1fr;
  }
  .hero-text {
    padding: var(--gap-lg) var(--gap-md);
    align-items: flex-end;
    text-align: right;
  }
  .hero-fig { display: none; }

  .home-body,
  .cat-body,
  .tag-body,
  .default-body {
    grid-template-columns: 1fr;
  }
  .home-aside,
  .cat-aside,
  .tag-aside,
  .default-aside {
    position: static;
  }

  .page-hero {
    grid-template-columns: 1fr;
  }
  .page-hero-aside { display: none; }

  .about-hero,
  .privacy-header {
    grid-template-columns: 1fr;
  }
  .about-hero-shape,
  .privacy-deco,
  .about-hero-aside,
  .privacy-aside-header { display: none; }

  .about-body,
  .privacy-body {
    grid-template-columns: 1fr;
  }
  .about-aside,
  .privacy-aside {
    position: static;
    display: block;
  }

  .article-header-section {
    grid-template-columns: 1fr;
  }
  .article-hero-fig,
  .article-toc-aside { display: none; }

  .article-body-section {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
    display: block;
  }
}

@media (max-width: 600px) {
  :root {
    --gap-md: 20px;
    --gap-lg: 32px;
  }
  body { font-size: 16px; }

  .brand-name { font-size: 17px; }
  .nav-list dd a {
    padding: 12px 12px;
    font-size: 12px;
    min-height: 44px;
  }

  .hero-h1 { font-size: 32px; }
  .hero-section { min-height: 55vh; }

  .card-grid {
    grid-template-columns: 1fr;
  }
  .cat-grid {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: var(--gap-md);
  }
  .footer-brand,
  .footer-nav-section,
  .footer-tags-section,
  .footer-contact-section {
    grid-column: 1;
  }
  .footer-bar { grid-column: 1; }

  .child-link { flex-direction: column; }
  .child-fig { width: 100%; }
  .list-thumb { width: 100%; height: 160px; }

  .tag-result-link { flex-direction: column; }
}

/* ===== prefers-reduced-motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal-item {
    opacity: 1;
    transform: none;
  }
}