@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400&family=Playfair+Display:ital@1&display=swap');

/* ===== 变量 ===== */
:root {
  --c-bg: #192617;
  --c-green: #87ff71;
  --c-blue: #01cdfe;
  --c-purple: #b967ff;
  --c-pink: #ff71ce;
  --c-text: #d4f5c8;
  --c-muted: #7aad6e;
  --c-card: #1e3019;
  --c-card2: #12201d;
  --c-border: rgba(135,255,113,0.18);
  --c-glow-g: rgba(135,255,113,0.35);
  --c-glow-b: rgba(1,205,254,0.35);
  --radius: 28px;
  --nav-h: 64px;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-title: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;
  --max-w: 1200px;
  --prose-w: 780px;
  --transition: 0.22s 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-body);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  padding-bottom: var(--nav-h);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-green); text-decoration: none; transition: color var(--transition), text-shadow var(--transition); }
a:hover { color: var(--c-blue); text-shadow: 0 0 8px var(--c-glow-b); }
ul { list-style: none; }

/* ===== 全局装饰：扫描线 ===== */
.scanlines {
  position: fixed; inset: 0; z-index: 1000; pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0,0,0,0.06) 3px,
    rgba(0,0,0,0.06) 4px
  );
  opacity: 0.4;
}

/* ===== 点阵底纹 ===== */
.dot-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: radial-gradient(circle, rgba(135,255,113,0.12) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ===== 复古网格（hero） ===== */
.retro-grid {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(1,205,254,0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(1,205,254,0.15) 1px, transparent 1px);
  background-size: 40px 40px;
  transform: perspective(400px) rotateX(30deg);
  transform-origin: bottom center;
  opacity: 0.6;
}

/* ===== Wrap ===== */
.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
  position: relative;
  z-index: 2;
}

/* ===== 霓虹标题 ===== */
.neon-title {
  font-family: var(--font-title);
  font-style: italic;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--c-green);
  text-shadow: 0 0 12px var(--c-glow-g), 0 0 28px var(--c-glow-g);
  letter-spacing: 0.02em;
  margin-bottom: 0.25rem;
}
.neon-title--sm { font-size: clamp(1.2rem, 3vw, 1.6rem); }

/* ===== subtitle 跟随 h2 ===== */
.subtitle, p.subtitle {
  color: var(--c-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
}

/* ===== eyebrow ===== */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-blue);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.75rem;
  text-shadow: 0 0 6px var(--c-glow-b);
}
.eyebrow a { color: var(--c-blue); }

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  min-height: 44px;
  line-height: 1.4;
}
.btn--primary {
  background: linear-gradient(90deg, var(--c-green), var(--c-blue));
  color: #0a1a09;
  box-shadow: 0 0 18px var(--c-glow-g);
}
.btn--primary:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 0 32px var(--c-glow-g), 0 0 16px var(--c-glow-b);
  color: #0a1a09;
  text-shadow: none;
}

/* ===== 卡片 ===== */
.card {
  background: var(--c-card);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--c-border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  height: 100%;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(135,255,113,0.15);
  border-color: var(--c-green);
}
.card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--c-green); }
.card p { font-size: 0.9rem; color: var(--c-muted); line-height: 1.6; }
.card--channel { background: var(--c-card2); }

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.card-grid--sm { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }

/* ===== Hero（首页） ===== */
.home-main { position: relative; z-index: 2; }

.hero-section {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 2rem;
  padding: 6rem 0 4rem;
  position: relative;
}

.hero__content {
  position: relative;
  z-index: 3;
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-blue);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  text-shadow: 0 0 8px var(--c-glow-b);
}
.hero__title {
  font-family: var(--font-title);
  font-style: italic;
  font-size: clamp(2.2rem, 6vw, 4rem);
  line-height: 1.15;
  color: var(--c-green);
  text-shadow: 0 0 20px var(--c-glow-g), 0 0 48px rgba(135,255,113,0.2);
  margin-bottom: 1.25rem;
}
.hero__lead {
  font-size: 1.05rem;
  color: var(--c-text);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.8;
}
.hero__media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}
.hero__img {
  border-radius: var(--radius);
  box-shadow: 0 0 40px var(--c-glow-b);
  position: relative;
  z-index: 2;
  width: 100%;
  object-fit: cover;
}
.hero__glow {
  position: absolute;
  width: 60%;
  height: 60%;
  background: radial-gradient(ellipse, var(--c-glow-b) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  filter: blur(32px);
}

/* ===== 区块间距 ===== */
.section-channels,
.section-content,
.section-latest,
.section-prose,
.section-children,
.art-related,
.about-cards,
.legal-links {
  padding: 3rem 0;
}

/* ===== 正文 prose ===== */
.prose-wrap {
  max-width: var(--prose-w);
  line-height: 1.85;
  font-size: 1rem;
}
.prose-wrap--legal { max-width: 100%; }
.prose-wrap h2,
.prose-wrap h3 {
  font-family: var(--font-title);
  font-style: italic;
  color: var(--c-green);
  text-shadow: 0 0 8px var(--c-glow-g);
  margin: 2rem 0 0.75rem;
}
.prose-wrap h2 { font-size: 1.4rem; }
.prose-wrap h3 { font-size: 1.15rem; }
.prose-wrap p { margin-bottom: 1rem; }
.prose-wrap ul, .prose-wrap ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.prose-wrap li { margin-bottom: 0.4rem; }
.prose-wrap a { border-bottom: 1px solid var(--c-border); }
.prose-wrap strong { color: var(--c-green); font-weight: 700; }

/* ===== 文章列表（栏目页） ===== */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}
.art-card {
  background: var(--c-card);
  border-radius: 18px;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--c-border);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.art-card:hover {
  border-color: var(--c-green);
  box-shadow: 0 4px 20px rgba(135,255,113,0.12);
}
.art-card h3 { font-size: 1rem; font-weight: 700; color: var(--c-green); margin-bottom: 0.4rem; }
.art-card p { font-size: 0.9rem; color: var(--c-muted); }
.art-date {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-blue);
  margin-top: 0.5rem;
  letter-spacing: 0.06em;
}
.art-date--mod { margin-left: 1rem; opacity: 0.7; }

/* ===== 文章页 meta ===== */
.art-meta { margin-top: 0.75rem; }

/* ===== Page banner ===== */
.page-banner, .page-hero {
  padding: 5rem 0 3rem;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 2rem;
}
.page-banner--narrow { padding: 4rem 0 2rem; }
.page-banner__text h1,
.page-hero__text h1,
.art-header__inner h1 {
  font-family: var(--font-title);
  font-style: italic;
  font-size: clamp(1.8rem, 5vw, 3rem);
  color: var(--c-green);
  text-shadow: 0 0 16px var(--c-glow-g);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

/* ===== Article header ===== */
.art-header { padding: 4rem 0 2rem; border-bottom: 1px solid var(--c-border); margin-bottom: 2rem; }

/* ===== 侧边栏 + 内容双栏 ===== */
.channel-layout,
.art-body-section,
.about-body-section,
.privacy-body-section {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  align-items: start;
  padding-bottom: 3rem;
}

.sidebar {
  position: sticky;
  top: 1.5rem;
}
.sidebar__inner {
  background: var(--c-card2);
  border-radius: 18px;
  padding: 1.25rem;
  border: 1px solid var(--c-border);
}
.sidebar__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  text-shadow: 0 0 6px var(--c-glow-b);
}
.sidebar__links { display: flex; flex-direction: column; gap: 0.35rem; }
.sidebar__links li a {
  display: block;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--c-text);
  transition: background var(--transition), color var(--transition);
  min-height: 40px;
  line-height: 40px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar__links li a:hover {
  background: rgba(135,255,113,0.08);
  color: var(--c-green);
  text-shadow: 0 0 6px var(--c-glow-g);
}

/* 浮动 sidebar（首页） */
.sidebar-float {
  display: none;
}

/* ===== 相关列表 ===== */
.rel-list { display: flex; flex-direction: column; gap: 0.5rem; }
.rel-list li a {
  display: block;
  padding: 0.5rem 0.75rem;
  background: var(--c-card2);
  border-radius: 10px;
  border: 1px solid var(--c-border);
  font-size: 0.9rem;
  transition: border-color var(--transition), color var(--transition);
  min-height: 40px;
  line-height: 1.5;
}
.rel-list li a:hover { border-color: var(--c-green); color: var(--c-green); }

/* ===== empty hint ===== */
.empty-hint { color: var(--c-muted); font-size: 0.9rem; padding: 1rem 0; }

/* ===== 底部固定导航条 ===== */
.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: rgba(15, 22, 13, 0.97);
  border-top: 1px solid var(--c-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.footer-nav-wrap {
  border-bottom: none;
}

.bottom-nav {
  width: 100%;
}

.bottom-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 0 0.5rem;
  min-height: var(--nav-h);
}

.bottom-nav__brand {
  font-family: var(--font-title);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--c-green);
  text-shadow: 0 0 10px var(--c-glow-g);
  padding: 0 0.75rem;
  flex-shrink: 0;
}
.bottom-nav__brand a {
  color: inherit;
  text-shadow: inherit;
  white-space: nowrap;
}

.bottom-nav__list dd {
  flex-shrink: 0;
}
.bottom-nav__list dd a {
  display: flex;
  align-items: center;
  padding: 0 0.6rem;
  min-height: var(--nav-h);
  font-size: 0.82rem;
  color: var(--c-text);
  white-space: nowrap;
  letter-spacing: 0.02em;
  transition: color var(--transition), text-shadow var(--transition);
}
.bottom-nav__list dd a:hover {
  color: var(--c-blue);
  text-shadow: 0 0 8px var(--c-glow-b);
}

/* footer 上方的展开区（桌面） */
.footer-cols {
  display: none;
}
.footer-copy {
  display: none;
}

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== 各页面主容器 ===== */
.channel-main,
.article-main,
.about-main,
.privacy-main {
  position: relative;
  z-index: 2;
  padding-top: 1rem;
}

/* ===== 响应式 ===== */

/* 桌面：导航展开，footer 展开 */
@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }
  .site-footer {
    position: static;
    background: rgba(12, 20, 10, 0.98);
    border-top: 1px solid var(--c-border);
  }
  .footer-nav-wrap {
    border-bottom: 1px solid var(--c-border);
  }
  .footer-cols {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 2rem 1.25rem 1.5rem;
  }
  .footer-col .footer-col__head {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--c-blue);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
  }
  .footer-col ul { display: flex; flex-direction: column; gap: 0.35rem; }
  .footer-col ul li a {
    font-size: 0.88rem;
    color: var(--c-muted);
    min-height: 32px;
    display: block;
    line-height: 32px;
  }
  .footer-col ul li a:hover { color: var(--c-green); }
  .footer-copy {
    display: block;
    text-align: center;
    padding: 0.75rem 1rem;
    font-size: 0.8rem;
    color: var(--c-muted);
    border-top: 1px solid var(--c-border);
  }
  .bottom-nav__list {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.25rem;
    justify-content: center;
  }
  .bottom-nav__list dd a {
    font-size: 0.88rem;
    padding: 0 0.9rem;
  }
}

/* 中等屏 */
@media (max-width: 1023px) {
  .hero-section {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 3rem 0 2rem;
  }
  .hero__media { min-height: 220px; }
  .channel-layout,
  .art-body-section,
  .about-body-section,
  .privacy-body-section {
    grid-template-columns: 1fr;
  }
  .sidebar { position: static; }
  .art-header { padding: 2.5rem 0 1.5rem; }
}

/* 小屏 */
@media (max-width: 767px) {
  :root { --nav-h: 56px; }
  .bottom-nav__brand { font-size: 0.82rem; }
  .bottom-nav__list dd a { font-size: 0.72rem; padding: 0 0.35rem; }
  .hero__title { font-size: 1.9rem; }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .page-banner, .page-hero { padding: 3rem 0 1.5rem; }
}

@media (max-width: 479px) {
  .card-grid { grid-template-columns: 1fr; }
  .bottom-nav__list {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .bottom-nav__list::-webkit-scrollbar { display: none; }
}

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