@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,400;0,500;1,400&display=swap');

/* ── 变量 ── */
:root {
  --c-black: #0d0d0d;
  --c-primary: #8000ff;
  --c-secondary: #ff00ff;
  --c-primary-dim: rgba(128,0,255,0.18);
  --c-secondary-dim: rgba(255,0,255,0.15);
  --c-text: #d4c8f0;
  --c-text-dim: #8878aa;
  --c-border: rgba(128,0,255,0.35);
  --c-border2: rgba(255,0,255,0.3);
  --c-glass: rgba(18,6,40,0.72);
  --c-glass2: rgba(255,0,255,0.06);
  --font: 'JetBrains Mono', 'Courier New', Courier, monospace;
  --radius: 28px;
  --radius-sm: 12px;
  --nav-h: 60px;
  --transition: 0.22s ease;
}

/* ── 重置 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--c-black);
  color: var(--c-text);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  padding-bottom: calc(var(--nav-h) + 8px);
}
a { color: var(--c-secondary); text-decoration: none; transition: color var(--transition); }
a:hover { color: #fff; text-shadow: 0 0 8px var(--c-secondary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ── 扫描线覆盖 ── */
.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0,0,0,0.08) 3px,
    rgba(0,0,0,0.08) 4px
  );
  animation: scanroll 12s linear infinite;
}
@keyframes scanroll {
  from { background-position: 0 0; }
  to   { background-position: 0 400px; }
}
@media (prefers-reduced-motion: reduce) {
  .scanlines { animation: none; }
}

/* ── 站点容器 ── */
.site-wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ── 霓虹发光辅助 ── */
.neon-p  { text-shadow: 0 0 10px var(--c-primary),  0 0 24px var(--c-primary); }
.neon-s  { text-shadow: 0 0 10px var(--c-secondary), 0 0 24px var(--c-secondary); }

/* ── 故障文字动效 ── */
.glitch-text {
  position: relative;
  display: inline-block;
  animation: glitch-main 4s steps(1) infinite;
}
.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  white-space: nowrap;
  overflow: hidden;
}
.glitch-text::before {
  color: var(--c-primary);
  clip-path: polygon(0 30%, 100% 30%, 100% 50%, 0 50%);
  animation: glitch-top 4s steps(1) infinite;
}
.glitch-text::after {
  color: var(--c-secondary);
  clip-path: polygon(0 55%, 100% 55%, 100% 70%, 0 70%);
  animation: glitch-bot 4s steps(1) infinite;
}
@keyframes glitch-main {
  0%,94%,100% { transform: none; }
  95% { transform: skewX(-3deg) translateX(3px); }
  97% { transform: skewX(2deg) translateX(-2px); }
}
@keyframes glitch-top {
  0%,94%,100% { transform: none; opacity: 0; }
  95% { transform: translateX(-4px); opacity: 1; }
  97% { transform: translateX(4px); opacity: 1; }
}
@keyframes glitch-bot {
  0%,93%,100% { transform: none; opacity: 0; }
  94% { transform: translateX(5px); opacity: 1; }
  96% { transform: translateX(-3px); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .glitch-text, .glitch-text::before, .glitch-text::after { animation: none; }
  .glitch-text::before, .glitch-text::after { display: none; }
}

/* ── 故障图标 ── */
.glitch-icon {
  font-size: 4rem;
  font-weight: 500;
  color: transparent;
  -webkit-text-stroke: 2px var(--c-primary);
  text-shadow: 4px 0 0 var(--c-secondary), -4px 0 0 var(--c-primary);
  letter-spacing: 0.12em;
  animation: icon-flicker 5s steps(1) infinite;
  display: inline-block;
}
@keyframes icon-flicker {
  0%,90%,100% { opacity: 1; }
  91% { opacity: 0.3; }
  92% { opacity: 1; }
  94% { opacity: 0.5; }
  95% { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .glitch-icon { animation: none; }
}

/* ── HERO ── */
.site-hero {
  position: relative;
  min-height: 45vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 0;
}
.hero-inner {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex: 1;
  padding: 48px 16px 32px;
  max-width: 1160px;
  margin: 0 auto;
  width: 100%;
}
.hero-aside {
  flex: 0 0 220px;
  padding-right: 24px;
  border-right: 1px solid var(--c-border);
  margin-right: 32px;
}
.hero-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
}
.hero-figure {
  margin-bottom: 16px;
}
.hero-h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 500;
  color: #fff;
  text-shadow: 0 0 18px var(--c-primary), 0 0 40px var(--c-primary);
  line-height: 1.25;
  margin-bottom: 16px;
}
.hero-desc {
  font-size: 1rem;
  color: var(--c-text-dim);
  max-width: 540px;
  margin-bottom: 28px;
}
.hero-slash {
  height: 40px;
  background: linear-gradient(135deg, var(--c-primary-dim) 0%, transparent 60%);
  clip-path: polygon(0 0, 100% 0, 100% 40%, 0 100%);
  flex-shrink: 0;
}

/* ── 页面头 ── */
.page-header {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 0;
}
.page-header-inner {
  padding: 40px 16px 28px;
  max-width: 1160px;
  margin: 0 auto;
}
.page-h1 {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 500;
  color: #fff;
  text-shadow: 0 0 14px var(--c-primary);
  margin: 10px 0 12px;
  line-height: 1.3;
}
.page-desc {
  color: var(--c-text-dim);
  font-size: 0.95rem;
}
.breadcrumb {
  font-size: 0.82rem;
  color: var(--c-text-dim);
  margin-bottom: 4px;
}
.breadcrumb a { color: var(--c-primary); }
.breadcrumb span[aria-hidden] { margin: 0 6px; }

/* ── 文章日期 ── */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}
.article-date {
  font-size: 0.82rem;
  color: var(--c-secondary);
  letter-spacing: 0.04em;
}

/* ── HUD 盒 ── */
.hud-box {
  background: var(--c-glass);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 16px;
  backdrop-filter: blur(8px);
}
.hud-box:last-child { margin-bottom: 0; }
.hud-label {
  font-size: 0.75rem;
  color: var(--c-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--c-border);
  padding-bottom: 6px;
}
.hud-box ul { display: flex; flex-direction: column; gap: 4px; }
.hud-box li a {
  display: block;
  padding: 6px 8px;
  font-size: 0.82rem;
  color: var(--c-text);
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.hud-box li a:hover {
  background: var(--c-primary-dim);
  color: #fff;
  text-shadow: none;
}
.tag-box { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-box .hud-label { width: 100%; }
.tag-box a {
  background: var(--c-primary-dim);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 0.78rem;
  color: var(--c-text);
  min-height: 32px;
  display: flex;
  align-items: center;
  transition: background var(--transition);
}
.tag-box a:hover { background: var(--c-primary); color: #fff; text-shadow: none; }

/* ── 主布局：aside 左 + 正文右 ── */
.layout-with-aside {
  display: flex;
  gap: 28px;
  padding: 36px 0;
  align-items: flex-start;
}
.content-aside {
  flex: 0 0 220px;
  position: sticky;
  top: 16px;
}
.main-col { flex: 1; min-width: 0; }

/* ── 装饰线 ── */
.section-deco {
  margin: 8px 0 20px;
}
.deco-line {
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), transparent);
  border-radius: 2px;
  position: relative;
}
.deco-line::after {
  content: '';
  position: absolute;
  right: 0; top: -3px;
  width: 8px; height: 8px;
  background: var(--c-secondary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--c-secondary);
}

/* ── 正文区 ── */
.prose-area {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text);
}
.prose-area h2, .prose-area h3 {
  color: #fff;
  text-shadow: 0 0 10px var(--c-primary);
  margin: 1.8em 0 0.7em;
}
.prose-area h2 { font-size: 1.3rem; }
.prose-area h3 { font-size: 1.1rem; }
.prose-area p { margin-bottom: 1em; }
.prose-area a { color: var(--c-secondary); text-decoration: underline; text-underline-offset: 3px; }
.prose-area ul, .prose-area ol {
  list-style: disc;
  padding-left: 1.4em;
  margin-bottom: 1em;
}
.prose-area ol { list-style: decimal; }
.prose-area table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.2em;
  font-size: 0.9rem;
}
.prose-area th, .prose-area td {
  padding: 8px 12px;
  border: 1px solid var(--c-border);
  text-align: left;
}
.prose-area th { background: var(--c-primary-dim); color: var(--c-secondary); }
.prose-area blockquote {
  border-left: 3px solid var(--c-primary);
  padding: 8px 16px;
  background: var(--c-glass);
  margin-bottom: 1em;
  color: var(--c-text-dim);
}
.prose-area code {
  background: rgba(128,0,255,0.15);
  border: 1px solid var(--c-border);
  border-radius: 4px;
  padding: 1px 6px;
  font-family: var(--font);
  font-size: 0.88em;
  color: var(--c-secondary);
}
.prose-area pre {
  background: rgba(10,0,25,0.8);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 1.2em;
}
.prose-area pre code { background: none; border: none; padding: 0; color: #00ff99; }

/* ── 卡片 ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 8px;
}
.glass-card {
  background: var(--c-glass);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(10px);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--c-primary-dim), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: var(--radius);
}
.glass-card:hover {
  border-color: var(--c-secondary);
  box-shadow: 0 0 24px rgba(255,0,255,0.2);
  transform: translateY(-4px);
}
.glass-card:hover::before { opacity: 1; }
.glass-card h2 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.glass-card p { font-size: 0.88rem; color: var(--c-text-dim); margin-bottom: 14px; }
.neon-label {
  font-size: 0.68rem;
  background: var(--c-primary-dim);
  border: 1px solid var(--c-primary);
  border-radius: 6px;
  padding: 2px 8px;
  color: var(--c-primary);
  flex-shrink: 0;
  letter-spacing: 0.08em;
}
.card-link {
  font-size: 0.85rem;
  color: var(--c-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 40px;
}
.card-link:hover { color: #fff; }

/* ── stagger 动效 ── */
@media (prefers-reduced-motion: no-preference) {
  .stagger-item {
    opacity: 0;
    transform: translateY(20px);
    animation: fadein-up 0.45s ease forwards;
  }
  .stagger-item:nth-child(1)  { animation-delay: 0.05s; }
  .stagger-item:nth-child(2)  { animation-delay: 0.12s; }
  .stagger-item:nth-child(3)  { animation-delay: 0.19s; }
  .stagger-item:nth-child(4)  { animation-delay: 0.26s; }
  .stagger-item:nth-child(5)  { animation-delay: 0.33s; }
  .stagger-item:nth-child(6)  { animation-delay: 0.40s; }
  @keyframes fadein-up {
    to { opacity: 1; transform: none; }
  }
}

/* ── 按钮 ── */
.btn-neon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border: 1.5px solid var(--c-primary);
  border-radius: var(--radius-sm);
  color: var(--c-primary);
  font-family: var(--font);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  background: var(--c-primary-dim);
  transition: all var(--transition);
  min-height: 44px;
  text-shadow: 0 0 8px var(--c-primary);
}
.btn-neon:hover {
  background: var(--c-primary);
  color: #fff;
  box-shadow: 0 0 20px rgba(128,0,255,0.5);
  text-shadow: none;
}
.btn-sm { padding: 8px 18px; font-size: 0.82rem; min-height: 40px; }

/* ── 区块 ── */
main article {
  padding: 32px 0;
  border-bottom: 1px solid rgba(128,0,255,0.12);
}
main article:last-child { border-bottom: none; }

.sec-prefix {
  color: var(--c-secondary);
  margin-right: 8px;
  font-size: 0.9em;
  text-shadow: 0 0 8px var(--c-secondary);
}
article > h2, article > h3 {
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 20px;
  text-shadow: 0 0 12px var(--c-primary);
}
article > h3 { font-size: 1.05rem; }

/* ── 子页列表 ── */
.child-list, .recent-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.child-list dt a, .recent-list dt a {
  font-size: 1rem;
  color: var(--c-secondary);
  display: block;
  padding: 10px 0 2px;
  min-height: 40px;
  line-height: 1.4;
}
.child-list dt a:hover, .recent-list dt a:hover { color: #fff; }
.child-list dd, .recent-list dd {
  font-size: 0.85rem;
  color: var(--c-text-dim);
  padding: 0 0 10px;
  border-bottom: 1px solid rgba(128,0,255,0.12);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
}
.child-list dd time, .recent-list dd time {
  color: var(--c-primary);
  font-size: 0.78rem;
  flex-shrink: 0;
}

/* ── 标签链接 ── */
.tag-links, .related-tags, .quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.tag-links a, .related-tags a {
  background: var(--c-secondary-dim);
  border: 1px solid var(--c-border2);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 0.82rem;
  color: var(--c-text);
  min-height: 36px;
  display: flex;
  align-items: center;
  transition: background var(--transition);
}
.tag-links a:hover, .related-tags a:hover {
  background: var(--c-secondary);
  color: var(--c-black);
  text-shadow: none;
}

/* ── about 图标 ── */
.about-icon { font-size: 3rem; margin-bottom: 20px; }
.about-icon span { color: var(--c-secondary); }
.about-figure { margin-bottom: 16px; }

/* ── div badge ── */
.article-hero-fig {
  margin-bottom: 16px;
}
.article-badge {
  display: inline-block;
  background: var(--c-primary-dim);
  border: 1px solid var(--c-primary);
  border-radius: 6px;
  padding: 3px 14px;
  font-size: 0.75rem;
  color: var(--c-primary);
  letter-spacing: 0.1em;
  text-shadow: 0 0 6px var(--c-primary);
}

/* ── notice box ── */
.notice-box {
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--c-text-dim);
}
.notice-box p { margin-bottom: 12px; }
.notice-box a { color: var(--c-secondary); }

/* ── 底部固定导航条 ── */
.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10,3,25,0.96);
  border-top: 1px solid var(--c-border);
  backdrop-filter: blur(12px);
}

/* footer 内导航 */
.footer-nav {
  display: none;
}
@media (min-width: 769px) {
  .footer-nav {
    display: block;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease;
  }
  .site-footer:hover .footer-nav,
  .site-footer:focus-within .footer-nav {
    max-height: 320px;
  }
  .footer-nav dl {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    padding: 16px 16px 0;
    max-width: 1160px;
    margin: 0 auto;
  }
  .footer-nav dt {
    flex: 0 0 auto;
    padding: 0 12px 10px;
  }
  .footer-nav dt a {
    font-size: 0.82rem;
    color: var(--c-text);
    white-space: nowrap;
    min-height: 40px;
    display: flex;
    align-items: center;
  }
  .footer-nav dt a:hover { color: var(--c-secondary); }
  .footer-nav dd { display: none; }
}

.footer-copy {
  text-align: center;
  font-size: 0.8rem;
  color: var(--c-text-dim);
  padding: 10px 16px 4px;
  max-width: 1160px;
  margin: 0 auto;
}
.footer-copy a { color: var(--c-primary); min-height: 40px; display: inline-flex; align-items: center; padding: 0 4px; }
.footer-copy a:hover { color: var(--c-secondary); }
.footer-note {
  display: block;
  text-align: center;
  font-size: 0.7rem;
  color: rgba(180,160,220,0.4);
  padding: 0 16px 10px;
}

/* 移动端底栏：只显示主要链接 */
@media (max-width: 768px) {
  .site-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .footer-nav { display: none; }
  .footer-copy { padding: 8px 12px 2px; font-size: 0.72rem; }
  .footer-note { font-size: 0.65rem; padding-bottom: 6px; }
}

/* ── 桌面：aside 左侧固定宽度 ── */
@media (min-width: 769px) {
  .layout-with-aside {
    flex-direction: row;
  }
  .content-aside {
    flex: 0 0 220px;
  }
}

/* ── 移动端适配 ── */
@media (max-width: 768px) {
  .hero-inner {
    flex-direction: column;
    padding: 32px 12px 20px;
    gap: 20px;
  }
  .hero-aside {
    flex: none;
    border-right: none;
    border-bottom: 1px solid var(--c-border);
    padding-right: 0;
    padding-bottom: 16px;
    margin-right: 0;
    margin-bottom: 4px;
  }
  .site-hero { min-height: auto; }
  .layout-with-aside {
    flex-direction: column;
  }
  .content-aside {
    flex: none;
    width: 100%;
    position: static;
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
  .hud-box li a { min-height: 44px; }
  .btn-neon { width: 100%; justify-content: center; min-height: 48px; }
  .tag-links a, .related-tags a { min-height: 40px; }
  body { font-size: 16px; }
  .footer-copy a { min-height: 44px; padding: 0 6px; }
}

/* ── 首页专区网格 ── */
.section-topics { padding-bottom: 24px; }
.section-recent .recent-list { margin-top: 16px; }

/* ── 隐私页 ── */
.privacy-prose { max-width: 720px; }

/* ── h2 span 装饰 ── */
h2 > span:first-child + span,
h3 > span:first-child + span {
  color: #fff;
}
h2 > span.sec-prefix,
h3 > span.sec-prefix {
  color: var(--c-secondary);
}

/* ── 标签页卡片区 ── */
.section-tagged .cards-grid { margin-top: 0; }

/* ── 额外内容空间 ── */
.section-links .quick-links a,
.section-nav-extra .quick-links a {
  background: var(--c-primary-dim);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 0.85rem;
  color: var(--c-text);
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: background var(--transition);
}
.section-links .quick-links a:hover,
.section-nav-extra .quick-links a:hover {
  background: var(--c-primary);
  color: #fff;
  text-shadow: none;
}

/* ── focus 可访问性 ── */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--c-secondary);
  outline-offset: 3px;
}