@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:wght@400;700&family=Crimson+Pro:wght@400;500;600;700&display=swap');

/* ===== 变量 ===== */
:root {
  --c-bg: #0d0d0d;
  --c-primary: #8000ff;
  --c-accent: #ff00ff;
  --c-text: #e8e0f0;
  --c-text-dim: #9a8fb0;
  --c-surface: rgba(128, 0, 255, 0.07);
  --c-border: rgba(128, 0, 255, 0.3);
  --c-border-accent: rgba(255, 0, 255, 0.4);
  --c-glass: rgba(13, 13, 13, 0.75);
  --nav-w: 220px;
  --radius: 18px;
  --radius-sm: 8px;
  --font-body: 'Crimson Pro', 'Atkinson Hyperlegible', Georgia, serif;
  --font-ui: 'Atkinson Hyperlegible', system-ui, sans-serif;
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== 扫描线叠层 ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(128, 0, 255, 0.03) 3px,
    rgba(128, 0, 255, 0.03) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ===== 布局骨架 ===== */
.site-wrapper {
  display: flex;
  min-height: 100vh;
}

.page-body {
  flex: 1;
  margin-left: var(--nav-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== 侧边导航 ===== */
.sidenav {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--nav-w);
  height: 100vh;
  background: var(--c-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: 0;
  z-index: 100;
  overflow-y: auto;
  padding-bottom: 1rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 64px;
  border-bottom: 1px solid var(--c-border);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.nav-logo-text {
  font-family: var(--font-ui);
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.05em;
}

/* details/summary 导航 */
.nav-group {
  flex: 1;
}

.nav-group-title {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--c-primary);
  text-transform: uppercase;
  cursor: pointer;
  border-bottom: 1px solid var(--c-border);
  list-style: none;
  user-select: none;
  min-height: 40px;
}

.nav-group-title::-webkit-details-marker { display: none; }

.nav-group-title::after {
  content: '▾';
  margin-left: auto;
  transition: transform 0.2s;
  color: var(--c-accent);
}

details[open] .nav-group-title::after {
  transform: rotate(-180deg);
}

.nav-group menu,
.nav-group ul {
  list-style: none;
  padding: 0.5rem 0;
}

.nav-group menu li a,
.nav-group ul li a {
  display: flex;
  align-items: center;
  padding: 0.55rem 1rem 0.55rem 1.25rem;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--c-text-dim);
  text-decoration: none;
  line-height: 1.3;
  min-height: 40px;
  transition: color 0.2s, background 0.2s, padding-left 0.2s;
  border-left: 2px solid transparent;
}

.nav-group menu li a:hover,
.nav-group ul li a:hover,
.nav-group menu li a[aria-current="page"],
.nav-group ul li a[aria-current="page"] {
  color: var(--c-accent);
  background: rgba(255, 0, 255, 0.06);
  border-left-color: var(--c-accent);
  padding-left: 1.5rem;
}

/* 搜索框 */
.nav-search {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--c-border);
  flex-shrink: 0;
}

.search-input {
  width: 100%;
  background: rgba(128, 0, 255, 0.1);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  padding: 0.5rem 0.75rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 40px;
}

.search-input:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 8px rgba(255, 0, 255, 0.3);
}

.search-input::placeholder { color: var(--c-text-dim); }

/* ===== HUD 标签 ===== */
.hud-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  padding: 0.2em 0.7em;
  border: 1px solid var(--c-primary);
  color: var(--c-primary);
  border-radius: 3px;
  text-transform: uppercase;
  background: rgba(128, 0, 255, 0.1);
  line-height: 1.6;
}

.hud-num {
  border-color: var(--c-accent);
  color: var(--c-accent);
  background: rgba(255, 0, 255, 0.08);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

/* ===== 玻璃拟态卡片 ===== */
.glass-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.glass-card:hover {
  border-color: var(--c-accent);
  box-shadow: 0 0 20px rgba(255, 0, 255, 0.2), 0 0 40px rgba(128, 0, 255, 0.1);
  transform: translateY(-3px);
}

/* ===== Hero 区域 ===== */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 3rem 3rem;
  overflow: hidden;
  border-bottom: 1px solid var(--c-border);
}

.hero-figure {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  pointer-events: none;
  margin: 0;
}

.hero-bg-text {
  font-family: var(--font-ui);
  font-size: clamp(6rem, 18vw, 16rem);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(128, 0, 255, 0.15);
  letter-spacing: -0.05em;
  user-select: none;
  line-height: 1;
  padding-right: 1rem;
}

.hero-bg-text.sm {
  font-size: clamp(4rem, 12vw, 10rem);
}

.hero-aside {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.hero-decor-num {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.2em;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.hero-h1 {
  font-family: var(--font-body);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 0%, var(--c-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--c-text-dim);
  margin-bottom: 2rem;
  max-width: 480px;
}

/* 霓虹按钮 */
.btn-neon {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 2rem;
  background: transparent;
  border: 2px solid var(--c-primary);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  min-height: 44px;
  transition: background 0.2s, box-shadow 0.2s, border-color 0.2s, color 0.2s;
}

.btn-neon:hover {
  background: rgba(128, 0, 255, 0.2);
  border-color: var(--c-accent);
  color: var(--c-accent);
  box-shadow: 0 0 16px rgba(255, 0, 255, 0.4), 0 0 32px rgba(128, 0, 255, 0.2);
}

/* ===== 内容区双栏 ===== */
.content-section {
  display: flex;
  flex: 1;
  gap: 0;
  padding: 0;
}

/* aside 在左侧 */
.content-aside {
  width: 220px;
  flex-shrink: 0;
  padding: 2rem 1.25rem;
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.main-content {
  flex: 1;
  padding: 2.5rem 2.5rem 3rem;
  min-width: 0;
}

/* 侧边导航 */
.aside-nav,
.aside-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.aside-title {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--c-primary);
  text-transform: uppercase;
}

.aside-nav ul,
.aside-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.aside-nav a,
.aside-links a {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--c-text-dim);
  text-decoration: none;
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: color 0.2s, border-color 0.2s;
}

.aside-nav a:hover,
.aside-links a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* ===== hr 样式 ===== */
hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, var(--c-primary), var(--c-accent), transparent);
  margin: 0.5rem 0 0.75rem;
  opacity: 0.5;
}

/* ===== 正文内容 ===== */
.page-content-body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--c-text);
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.page-content-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-text);
  margin: 2rem 0 0.25rem;
  text-shadow: 0 0 12px rgba(128, 0, 255, 0.4);
}

.page-content-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--c-accent);
  margin: 1.5rem 0 0.25rem;
}

.page-content-body p { margin-bottom: 1rem; }

.page-content-body a {
  color: var(--c-accent);
  text-decoration: underline;
  text-decoration-color: rgba(255, 0, 255, 0.4);
  transition: text-shadow 0.2s;
}

.page-content-body a:hover {
  text-shadow: 0 0 8px rgba(255, 0, 255, 0.6);
}

.page-content-body ul,
.page-content-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.page-content-body li { margin-bottom: 0.4rem; }

.page-content-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
}

/* ===== article 标题 ===== */
.section-heading {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin: 2rem 0 0.25rem;
  text-shadow: 0 0 8px rgba(128, 0, 255, 0.5);
}

/* ===== 卡片网格 ===== */
.story-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.story-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
  counter-reset: story-counter;
}

.story-item {
  display: flex;
  gap: 1rem;
  padding: 1rem;
}

.card-fig {
  flex-shrink: 0;
  width: 100px;
  margin: 0;
}

.card-fig .card-img {
  width: 100%;
  height: 70px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  display: block;
}

.card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.card-title {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.2s, text-shadow 0.2s;
}

.card-title:hover {
  color: var(--c-accent);
  text-shadow: 0 0 8px rgba(255, 0, 255, 0.5);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--c-text-dim);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-date {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--c-text-dim);
}

/* 栏目卡片 */
.sec-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.sec-card a {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  text-decoration: none;
  height: 100%;
}

.sec-card strong {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.4;
  display: block;
  margin-top: 0.25rem;
}

.sec-card small {
  font-size: 0.8rem;
  color: var(--c-text-dim);
  line-height: 1.4;
}

/* 相邻推荐列表 */
.sib-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.sib-card a {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem;
  text-decoration: none;
}

.sib-card .card-title {
  font-size: 0.9rem;
}

/* ===== article/tag/story Hero 变体 ===== */
.sec-hero-section,
.tag-header-section,
.about-header-section,
.privacy-header-section,
.story-header-section {
  position: relative;
  padding: 3rem 2.5rem 2rem;
  border-bottom: 1px solid var(--c-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sec-hero-fig,
.tag-hero-fig,
.about-hero-fig,
.privacy-hero-fig {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  pointer-events: none;
  margin: 0;
}

.sec-h1,
.tag-h1,
.about-h1,
.privacy-h1,
.story-h1 {
  font-family: var(--font-body);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--c-text);
  text-shadow: 0 0 16px rgba(128, 0, 255, 0.3);
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.sec-aside-top,
.tag-aside-top,
.about-aside-top,
.privacy-aside-top,
.story-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  z-index: 1;
}

.sec-hero-content,
.tag-header-content,
.about-header-content,
.privacy-header-content,
.story-header-content {
  position: relative;
  z-index: 1;
}

/* ===== 时间/日期 ===== */
.pub-date,
.mod-date {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--c-text-dim);
  letter-spacing: 0.05em;
}

.story-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

/* ===== story hero 图 ===== */
.story-hero-fig {
  margin: 1rem 0 0;
  position: relative;
  z-index: 1;
}

.story-hero-img {
  max-width: 100%;
  max-height: 340px;
  width: auto;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  display: block;
}

/* ===== 文章容器 ===== */
.story-article {
  max-width: 760px;
}

/* ===== tag 列表 ===== */
.tag-story-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
  counter-reset: tag-counter;
}

.tag-story-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.875rem 1rem;
}

.tag-story-item a {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  text-decoration: none;
  transition: color 0.2s;
}

.tag-story-item a:hover { color: var(--c-accent); }

.tag-story-item small {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--c-text-dim);
}

/* ===== 面包屑 ===== */
.breadcrumb-link {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--c-text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb-link:hover { color: var(--c-accent); }

/* ===== 页脚 ===== */
.site-footer {
  border-top: 1px solid var(--c-border);
  padding: 1rem 2.5rem;
  margin-top: auto;
  background: var(--c-glass);
  backdrop-filter: blur(8px);
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-brand {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--c-primary);
  text-decoration: none;
  text-shadow: 0 0 8px rgba(128, 0, 255, 0.5);
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: color 0.2s;
}

.footer-brand:hover { color: var(--c-accent); }

.footer-nav a:not(.footer-brand) {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--c-text-dim);
  text-decoration: none;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: color 0.2s;
}

.footer-nav a:not(.footer-brand):hover { color: var(--c-accent); }

.footer-copy {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--c-text-dim);
  margin-left: auto;
}

/* ===== 霓虹发光动效 ===== */
@keyframes glitch {
  0% { transform: none; opacity: 1; }
  7% { transform: skew(-0.5deg, -0.9deg); opacity: 0.75; }
  10% { transform: none; opacity: 1; }
  27% { transform: none; opacity: 1; }
  30% { transform: skew(0.8deg, -0.1deg); opacity: 0.75; }
  35% { transform: none; opacity: 1; }
  100% { transform: none; opacity: 1; }
}

.hero-h1 {
  animation: glitch 6s infinite;
}

@media (prefers-reduced-motion: reduce) {
  .hero-h1 { animation: none; }
  .glass-card { transition: none; }
  .btn-neon { transition: none; }
  html { scroll-behavior: auto; }
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  :root { --nav-w: 0px; }

  .sidenav {
    position: fixed;
    top: 0;
    left: -240px;
    width: 240px;
    transition: left 0.3s;
    z-index: 200;
  }

  .sidenav.open { left: 0; }

  .page-body { margin-left: 0; }

  .page-body::before {
    content: '';
    display: block;
    height: 56px;
  }

  /* 移动顶栏 */
  .site-wrapper::before {
    content: attr(data-brand);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: var(--c-glass);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    z-index: 150;
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--c-primary);
  }

  .content-section {
    flex-direction: column;
  }

  .content-aside {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--c-border);
    padding: 1.25rem 1.5rem;
  }

  .main-content {
    padding: 1.5rem 1.25rem 2rem;
  }

  .hero-section {
    min-height: 55vh;
    padding: 3rem 1.5rem 2rem;
  }

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

  .sec-list,
  .sib-list {
    grid-template-columns: 1fr 1fr;
  }

  .footer-copy { margin-left: 0; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }

  .sec-list,
  .sib-list {
    grid-template-columns: 1fr;
  }

  .sec-hero-section,
  .tag-header-section,
  .about-header-section,
  .privacy-header-section,
  .story-header-section {
    padding: 2rem 1.25rem 1.5rem;
  }

  .story-item { flex-direction: column; }
  .card-fig { width: 100%; }
  .card-fig .card-img { height: 140px; width: 100%; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .footer-copy { margin-left: 0; }
}