@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* ── 自定义属性 ── */
:root {
  --c-bg: #0d0d0d;
  --c-surface: #111118;
  --c-surface2: #16161f;
  --c-primary: #8000ff;
  --c-secondary: #ff00ff;
  --c-accent: #00ff99;
  --c-text: #e0e0e0;
  --c-text-dim: #888;
  --c-border: rgba(128, 0, 255, 0.35);
  --c-border-hot: rgba(255, 0, 255, 0.5);
  --glow-primary: 0 0 8px #8000ff, 0 0 20px rgba(128,0,255,0.4);
  --glow-secondary: 0 0 8px #ff00ff, 0 0 20px rgba(255,0,255,0.4);
  --font-main: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --nav-w: 220px;
  --nav-w-collapsed: 56px;
  --radius: 0px;
  --transition: 0.2s ease;
}

/* ── 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-text);
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── 扫描线叠层 ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.08) 2px,
    rgba(0,0,0,0.08) 4px
  );
}

/* ── 链接基础 ── */
a { color: var(--c-secondary); text-decoration: none; transition: color var(--transition), text-shadow var(--transition); }
a:hover { color: #fff; text-shadow: var(--glow-secondary); }
a:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 3px; }

img { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }

/* ── 侧边导航 ── */
.sidenav {
  position: fixed;
  top: 0; left: 0;
  width: var(--nav-w);
  height: 100vh;
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: width var(--transition), transform var(--transition);
  overflow: hidden;
}

.sidenav::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, var(--c-primary) 0%, var(--c-secondary) 50%, transparent 100%);
  box-shadow: var(--glow-primary);
}

.sidenav__brand {
  padding: 16px;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60px;
}

.sidenav__logo { border: 1px solid var(--c-primary); }
.sidenav__logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-primary);
  text-shadow: var(--glow-primary);
  letter-spacing: 0.1em;
}

.sidenav__nav { flex: 1; overflow-y: auto; padding: 12px 0; }
.sidenav__nav::-webkit-scrollbar { width: 3px; }
.sidenav__nav::-webkit-scrollbar-track { background: transparent; }
.sidenav__nav::-webkit-scrollbar-thumb { background: var(--c-primary); }

.sidenav__nav ul { display: flex; flex-direction: column; gap: 2px; padding: 0 8px; }

.nav-link {
  display: block;
  padding: 10px 12px;
  color: var(--c-text-dim);
  font-size: 0.875rem;
  font-weight: 400;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 40px;
  line-height: 1.4;
  display: flex;
  align-items: center;
}

.nav-link:hover,
.nav-link--active {
  color: var(--c-secondary);
  border-color: var(--c-border-hot);
  background: rgba(255,0,255,0.06);
  text-shadow: var(--glow-secondary);
}

.sidenav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-size: 1.2rem;
  padding: 10px;
  cursor: pointer;
  width: 100%;
  min-height: 44px;
  transition: color var(--transition);
}
.sidenav__toggle:hover { color: var(--c-secondary); }

/* ── 页面布局 ── */
.page-wrap {
  margin-left: var(--nav-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition);
}

.main-content { flex: 1; }

/* ── HUD标签 ── */
.hud-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--c-primary);
  border: 1px solid var(--c-primary);
  padding: 2px 8px;
  text-transform: uppercase;
  text-shadow: var(--glow-primary);
  box-shadow: inset 0 0 6px rgba(128,0,255,0.15);
  margin-bottom: 8px;
}

.section-eyebrow {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--c-secondary);
  text-shadow: var(--glow-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

/* ── Hero 区（首页） ── */
.hero-section {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  position: relative;
  overflow: hidden;
  background: var(--c-bg);
}

.hero__collage {
  position: relative;
  overflow: hidden;
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
}

.hero__collage::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(128,0,255,0.25) 0%, rgba(255,0,255,0.15) 100%);
  z-index: 1;
  pointer-events: none;
}

.hero__img {
  position: absolute;
  object-fit: cover;
}

.hero__img--1 {
  top: 0; left: 0;
  width: 75%; height: 65%;
  z-index: 2;
  border: 2px solid var(--c-primary);
  box-shadow: var(--glow-primary);
}

.hero__img--2 {
  bottom: 5%; right: 0;
  width: 65%; height: 55%;
  z-index: 3;
  border: 2px solid var(--c-secondary);
  box-shadow: var(--glow-secondary);
}

.hero__badge {
  position: absolute;
  z-index: 4;
  background: rgba(13,13,13,0.85);
}

.hero__badge--1 { top: 12px; right: 12px; }
.hero__badge--2 { bottom: 20px; left: 12px; }

.hero__aside {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  text-align: right;
  padding: 60px 48px;
  position: relative;
  z-index: 2;
}

.hero__eyebrow { margin-bottom: 16px; }

.hero__h1 {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 700;
  color: #fff;
  text-shadow: var(--glow-primary);
  margin-bottom: 20px;
  line-height: 1.25;
}

.hero__intro {
  font-size: 1rem;
  color: var(--c-text-dim);
  max-width: 380px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  background: transparent;
  color: var(--c-primary);
  border: 2px solid var(--c-primary);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-shadow: var(--glow-primary);
  box-shadow: var(--glow-primary);
  cursor: pointer;
  transition: all 0.25s;
  min-height: 44px;
}

.btn-primary:hover {
  background: var(--c-primary);
  color: #fff;
  text-shadow: none;
}

/* ── 通用内容区块 ── */
.content-section,
.cat-section,
.entries-section,
.subpages-section,
.entry-header-section,
.about-header-section,
.about-header-section,
.privacy-header-section,
.tag-header-section {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 0;
  border-bottom: 1px solid var(--c-border);
}

.page-header-section {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 0;
  border-bottom: 1px solid var(--c-border);
}

/* 左侧 aside */
.content-aside,
.cat-section__aside,
.entries-section__aside,
.subpages-aside,
.entry-header-aside,
.page-header-aside,
.about-header-aside,
.privacy-header-aside,
.tag-header-aside,
.hero__aside + .content-aside {
  padding: 40px 24px;
  border-right: 1px solid var(--c-border);
  background: var(--c-surface);
  grid-column: 1;
}

/* 右侧正文 */
.content-body,
.cat-section__body,
.entries-section__body,
.subpages-body,
.entry-header-body,
.page-header-body,
.about-header-body,
.privacy-header-body,
.tag-header-body {
  padding: 48px 48px;
  grid-column: 2;
}

/* section-deco spans columns */
.section-deco,
.page-header-deco,
.about-deco,
.entry-hero-fig {
  grid-column: 1 / -1;
  margin: 0;
}

.cat-section,
.entries-section,
.subpages-section {
  grid-template-columns: 240px 1fr;
  grid-template-rows: auto auto;
}

.cat-section > .section-deco,
.entries-section > .section-deco,
.subpages-section > .section-deco {
  grid-column: 1 / -1;
  grid-row: 1;
  height: 3px;
  overflow: hidden;
}

.cat-section > .cat-section__aside,
.entries-section > .entries-section__aside,
.subpages-section > .subpages-aside {
  grid-row: 2;
}

.cat-section > .cat-section__body,
.entries-section > .entries-section__body,
.subpages-section > .subpages-body {
  grid-row: 2;
}

/* ── 装饰条 ── */
.glitch-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), var(--c-primary));
  animation: glitch-shift 2s infinite;
}

.scanline-bar {
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--c-primary) 0px, var(--c-primary) 4px, transparent 4px, transparent 12px);
}

@keyframes glitch-shift {
  0%, 100% { transform: scaleX(1) translateX(0); opacity: 1; }
  20% { transform: scaleX(1.02) translateX(3px); opacity: 0.85; }
  40% { transform: scaleX(0.98) translateX(-2px); opacity: 1; }
  60% { transform: scaleX(1.01) translateX(1px); opacity: 0.9; }
  80% { transform: scaleX(1) translateX(0); opacity: 1; }
}

/* ── aside 工具块 ── */
.aside-block { margin-bottom: 28px; }
.aside-links { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.aside-links li a {
  display: block;
  padding: 7px 10px;
  color: var(--c-text-dim);
  font-size: 0.875rem;
  border-left: 2px solid transparent;
  transition: all var(--transition);
  min-height: 40px;
  line-height: 1.4;
  display: flex;
  align-items: center;
}
.aside-links li a:hover {
  color: var(--c-secondary);
  border-left-color: var(--c-secondary);
  background: rgba(255,0,255,0.05);
}

.aside-note { font-size: 0.8rem; color: var(--c-text-dim); margin-top: 8px; }

/* ── 面包屑 ── */
.breadcrumb-link {
  font-size: 0.8rem;
  color: var(--c-text-dim);
  display: block;
  margin-top: 8px;
  min-height: 40px;
  line-height: 40px;
}
.breadcrumb-link:hover { color: var(--c-secondary); }

/* ── 标题 ── */
.section-title {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 24px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-border);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 48px; height: 2px;
  background: var(--c-primary);
  box-shadow: var(--glow-primary);
}

.page-h1, .entry-h1 {
  font-size: clamp(1.4rem, 2.5vw, 2.2rem);
  font-weight: 700;
  color: #fff;
  text-shadow: var(--glow-primary);
  margin: 12px 0 16px;
  line-height: 1.3;
}

.page-date {
  font-size: 0.8rem;
  color: var(--c-text-dim);
  letter-spacing: 0.05em;
  display: block;
  margin-top: 8px;
}

/* ── 正文 prose ── */
.prose {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text);
  max-width: 720px;
}

.prose h2, .prose h3 {
  color: var(--c-secondary);
  text-shadow: var(--glow-secondary);
  margin: 28px 0 12px;
}

.prose h2 { font-size: 1.2rem; }
.prose h3 { font-size: 1.05rem; }

.prose p { margin-bottom: 16px; }

.prose a {
  color: var(--c-primary);
  border-bottom: 1px solid rgba(128,0,255,0.4);
}
.prose a:hover { color: var(--c-secondary); border-bottom-color: var(--c-secondary); }

.prose ul, .prose ol {
  margin: 12px 0 16px 20px;
  list-style: disc;
}

.prose li { margin-bottom: 6px; }

.prose strong { color: var(--c-secondary); font-weight: 700; }

/* ── 表格 ── */
.cat-table, .sub-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.cat-table td, .sub-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-border);
  vertical-align: middle;
}

.cat-table tr:hover td, .sub-table tr:hover td {
  background: rgba(128,0,255,0.06);
}

.table-link {
  font-weight: 500;
  color: var(--c-secondary);
}

.sub-title-link {
  font-weight: 600;
  color: var(--c-secondary);
  display: block;
  margin-bottom: 4px;
}

.sub-desc {
  font-size: 0.8rem;
  color: var(--c-text-dim);
  margin: 4px 0;
}

.sub-date {
  font-size: 0.75rem;
  color: var(--c-primary);
  letter-spacing: 0.05em;
}

.sub-thumb-fig { width: 80px; margin: 0; }
.sub-thumb { width: 80px; height: 54px; object-fit: cover; border: 1px solid var(--c-border); }
.no-thumb { font-size: 0.75rem; color: var(--c-text-dim); }

/* ── 条目卡片网格 ── */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.entry-card {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  padding: 20px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.entry-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  opacity: 0;
  transition: opacity var(--transition);
}

.entry-card:hover {
  border-color: var(--c-border-hot);
  box-shadow: 0 4px 24px rgba(128,0,255,0.2);
  transform: translateY(-2px);
}

.entry-card:hover::before { opacity: 1; }

.entry-card__hud {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--c-primary);
  border: 1px solid var(--c-primary);
  display: inline-block;
  padding: 1px 6px;
  margin-bottom: 10px;
  text-shadow: var(--glow-primary);
}

.entry-card__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.entry-card__title a { color: #fff; }
.entry-card__title a:hover { color: var(--c-secondary); text-shadow: var(--glow-secondary); }

.entry-card__desc {
  font-size: 0.85rem;
  color: var(--c-text-dim);
  line-height: 1.6;
  margin-bottom: 10px;
}

.entry-card__date {
  font-size: 0.75rem;
  color: var(--c-primary);
  letter-spacing: 0.05em;
}

/* ── Entry Hero ── */
.entry-hero-fig {
  position: relative;
  height: 260px;
  overflow: hidden;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}

.entry-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

.entry-hero-badge {
  position: absolute;
  bottom: 16px; right: 20px;
  z-index: 2;
}

.entry-lead {
  font-size: 1.05rem;
  color: var(--c-text-dim);
  margin: 12px 0;
  line-height: 1.7;
}

.entry-meta-list {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.entry-meta-list li {
  display: flex;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--c-text-dim);
  align-items: center;
}

.meta-key {
  color: var(--c-primary);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--c-primary);
  padding: 0 4px;
}

/* ── 标签页 ── */
.tag-lead {
  font-size: 1rem;
  color: var(--c-text-dim);
  margin-top: 12px;
}

.no-result {
  color: var(--c-text-dim);
  padding: 24px 0;
  font-size: 0.9rem;
}

/* ── 页脚 ── */
.site-footer {
  border-top: 1px solid var(--c-border);
  background: var(--c-surface);
  padding: 0 48px;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), var(--c-primary));
  box-shadow: var(--glow-primary);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 0;
  min-height: 72px;
}

.footer-logo {
  display: flex;
  align-items: center;
}

.footer-brand-text {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-primary);
  text-shadow: var(--glow-primary);
  letter-spacing: 0.05em;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  align-items: center;
}

.footer-nav a {
  color: var(--c-text-dim);
  font-size: 0.85rem;
  min-height: 40px;
  line-height: 40px;
  padding: 0 4px;
  transition: color var(--transition);
}

.footer-nav a:hover { color: var(--c-secondary); text-shadow: var(--glow-secondary); }

.footer-copy {
  font-size: 0.78rem;
  color: var(--c-text-dim);
  letter-spacing: 0.03em;
}

/* ── 关于/隐私装饰 ── */
.about-deco {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
}

/* ── 滚动动画 ── */
@media (prefers-reduced-motion: no-preference) {
  .entry-card,
  .sub-table tr,
  .cat-table tr {
    animation: fadeInUp 0.4s both;
  }

  .entry-card:nth-child(1) { animation-delay: 0.05s; }
  .entry-card:nth-child(2) { animation-delay: 0.10s; }
  .entry-card:nth-child(3) { animation-delay: 0.15s; }
  .entry-card:nth-child(4) { animation-delay: 0.20s; }
  .entry-card:nth-child(5) { animation-delay: 0.25s; }
  .entry-card:nth-child(6) { animation-delay: 0.30s; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ── 响应式 ── */
@media (max-width: 900px) {
  .sidenav {
    width: var(--nav-w-collapsed);
  }

  .nav-link {
    font-size: 0;
    padding: 10px 16px;
    justify-content: center;
  }

  .nav-link::before {
    content: attr(data-icon, '·');
    font-size: 1.1rem;
    color: var(--c-secondary);
  }

  .sidenav__nav ul {
    padding: 0 4px;
  }

  .page-wrap { margin-left: var(--nav-w-collapsed); }

  .hero-section {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero__collage { height: 280px; min-height: 280px; position: relative; }
  .hero__aside { align-items: flex-start; text-align: left; padding: 32px 24px; }
  .hero__intro { max-width: 100%; }

  .content-section,
  .cat-section,
  .entries-section,
  .subpages-section,
  .entry-header-section,
  .page-header-section,
  .about-header-section,
  .privacy-header-section,
  .tag-header-section {
    grid-template-columns: 1fr;
  }

  .content-aside,
  .cat-section__aside,
  .entries-section__aside,
  .subpages-aside,
  .entry-header-aside,
  .page-header-aside,
  .about-header-aside,
  .privacy-header-aside,
  .tag-header-aside {
    border-right: none;
    border-bottom: 1px solid var(--c-border);
    padding: 24px;
    grid-column: 1;
    grid-row: auto;
  }

  .content-body,
  .cat-section__body,
  .entries-section__body,
  .subpages-body,
  .entry-header-body,
  .page-header-body,
  .about-header-body,
  .privacy-header-body,
  .tag-header-body {
    padding: 28px 24px;
    grid-column: 1;
    grid-row: auto;
  }

  .entry-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  :root { --nav-w-collapsed: 48px; }

  .sidenav { width: var(--nav-w-collapsed); }
  .page-wrap { margin-left: var(--nav-w-collapsed); }

  .sidenav__toggle { display: block; }

  .sidenav.is-open { width: var(--nav-w); }
  .sidenav.is-open .nav-link { font-size: 0.85rem; }

  .hero__h1 { font-size: 1.5rem; }
  .hero__aside { padding: 24px 16px; }

  .content-body,
  .cat-section__body,
  .entries-section__body,
  .subpages-body,
  .entry-header-body,
  .page-header-body,
  .about-header-body,
  .privacy-header-body,
  .tag-header-body {
    padding: 20px 16px;
  }

  .content-aside,
  .cat-section__aside,
  .entries-section__aside,
  .subpages-aside,
  .entry-header-aside,
  .page-header-aside,
  .about-header-aside,
  .privacy-header-aside,
  .tag-header-aside {
    padding: 16px;
  }

  .entry-grid { grid-template-columns: 1fr; }

  .footer-inner { padding: 16px 0; flex-direction: column; align-items: flex-start; gap: 12px; }
  .site-footer { padding: 0 16px; }

  .cat-table td, .sub-table td { padding: 8px 10px; }
  .sub-thumb-fig { width: 60px; }
  .sub-thumb { width: 60px; height: 40px; }
}

/* ── 工具 ── */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}