@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ── 基础变量 ── */
:root {
  --c-primary: #ff0000;
  --c-accent: #ff006e;
  --c-dark: #1a1a2e;
  --c-dark2: #16213e;
  --c-dark3: #0f3460;
  --c-text: #e8e8f0;
  --c-muted: #8888aa;
  --c-border: rgba(255,0,110,0.25);
  --c-grid: rgba(255,0,110,0.08);
  --sidebar-w: 220px;
  --radius: 10px;
  --font-main: 'Space Grotesk', 'DM Sans', system-ui, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
  --transition: 0.22s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-size: 16px;
  background: var(--c-dark);
  color: var(--c-text);
}
body, .body-dark {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.7;
  background: var(--c-dark);
  color: var(--c-text);
  min-height: 100vh;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-primary); }
ul { list-style: none; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

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

/* ── 侧边栏 ── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: rgba(10, 10, 26, 0.97);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: 0;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 24px 18px 18px;
  border-bottom: 1px solid var(--c-border);
}
.sidebar-logo { border-radius: 6px; }
.sidebar-logo-text {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.2rem;
  color: #fff;
  flex-shrink: 0;
}
.sidebar-brand-name {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-text);
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 侧栏导航 */
.sidebar nav {
  flex: 1;
  padding: 12px 0;
}
.sidebar nav ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar nav ul li {}
.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-muted);
  letter-spacing: 0.03em;
  border-left: 3px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  min-height: 42px;
}
.nav-link:hover, .nav-link:focus-visible {
  color: var(--c-primary);
  border-left-color: var(--c-primary);
  background: rgba(255,0,0,0.06);
}
.nav-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  flex-shrink: 0;
  box-shadow: 0 0 6px var(--c-accent);
  transition: background var(--transition), box-shadow var(--transition);
}
.nav-link:hover .nav-dot {
  background: var(--c-primary);
  box-shadow: 0 0 10px var(--c-primary);
}
.nav-text { flex: 1; }

/* 搜索框 */
.sidebar-search {
  padding: 14px 14px;
  border-top: 1px solid var(--c-border);
}
.sidebar-search form {
  display: flex;
  border: 1px solid var(--c-border);
  border-radius: 6px;
  overflow: hidden;
  background: rgba(255,255,255,0.04);
}
.sidebar-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 10px;
  color: var(--c-text);
  font-family: var(--font-main);
  font-size: 0.82rem;
  min-width: 0;
}
.sidebar-search input::placeholder { color: var(--c-muted); }
.sidebar-search button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 10px;
  color: var(--c-accent);
  font-size: 1rem;
  min-width: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition);
}
.sidebar-search button:hover { color: var(--c-primary); }

/* 侧栏底部装饰 */
.sidebar-footer-tip {
  padding: 12px 18px 20px;
  font-size: 0.72rem;
  color: var(--c-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.5;
}

/* ── 主区域 ── */
.main-area {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Hero ── */
.hero-section {
  width: 100%;
  min-height: 45vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: stretch;
}
.hero-inner {
  position: relative;
  width: 100%;
  min-height: 45vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0a0a1a 0%, var(--c-dark2) 50%, #0f0f2a 100%);
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media .hero-bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    135deg,
    rgba(26,26,46,0.85) 0%,
    rgba(26,26,46,0.6) 50%,
    rgba(255,0,110,0.12) 100%
  );
}

/* 网格底纹 */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* CRT 扫描线 */
.scanlines {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.18) 2px,
    rgba(0,0,0,0.18) 4px
  );
  animation: scanline-drift 8s linear infinite;
}
@keyframes scanline-drift {
  0%   { background-position: 0 0; }
  100% { background-position: 0 200px; }
}

.hero-content {
  position: relative;
  z-index: 6;
  margin-left: auto;
  max-width: 56%;
  padding: 48px 52px 48px 24px;
  text-align: right;
}
.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent);
  text-shadow: 0 0 12px var(--c-accent);
  margin-bottom: 12px;
  font-family: var(--font-mono);
}
.hero-title {
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  text-shadow:
    0 0 20px var(--c-primary),
    0 0 60px rgba(255,0,0,0.4);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.hero-sub {
  font-size: 0.95rem;
  color: rgba(232,232,240,0.7);
  line-height: 1.6;
  max-width: 380px;
  margin-left: auto;
}

/* ── Glitch 效果 ── */
.glitch-text {
  position: relative;
  display: inline-block;
}
.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 100%;
  background: transparent;
}
.glitch-text::before {
  color: var(--c-accent);
  animation: glitch-1 3.5s infinite linear;
  clip-path: polygon(0 20%, 100% 20%, 100% 40%, 0 40%);
  opacity: 0.7;
}
.glitch-text::after {
  color: var(--c-primary);
  animation: glitch-2 2.8s infinite linear;
  clip-path: polygon(0 60%, 100% 60%, 100% 80%, 0 80%);
  opacity: 0.6;
}
@keyframes glitch-1 {
  0%, 88%   { transform: none; opacity: 0; }
  89%        { transform: skewX(-8deg) translateX(4px); opacity: 0.7; }
  90%        { transform: skewX(6deg) translateX(-3px); opacity: 0.7; }
  91%, 100%  { transform: none; opacity: 0; }
}
@keyframes glitch-2 {
  0%, 80%   { transform: none; opacity: 0; }
  81%        { transform: skewX(10deg) translateX(-5px); opacity: 0.6; }
  83%        { transform: skewX(-4deg) translateX(3px); opacity: 0.6; }
  85%, 100%  { transform: none; opacity: 0; }
}
.glitch-small {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

/* ── 正文容器 ── */
main {
  flex: 1;
  padding: 0;
}
main > article {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 32px 60px;
}
main > article > div.content-section {
  /* 直接渲染 page.content */
}

/* ── page.content 内部样式 ── */
main h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  margin: 2.2rem 0 0.4rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--c-border);
  text-shadow: 0 0 14px rgba(255,0,110,0.3);
  scroll-margin-top: 20px;
}
main h2 + .subtitle,
main h2 + .subhead,
main h2 + .desc,
main h2 + .lead,
main h2 + p {
  color: var(--c-muted);
  font-size: 0.92rem;
  margin-top: 0;
  margin-bottom: 1rem;
}
main h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-accent);
  margin: 1.6rem 0 0.5rem;
  text-shadow: 0 0 8px rgba(255,0,110,0.2);
}
main p {
  margin-bottom: 1rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
}
main ul, main ol {
  padding-left: 1.4em;
  margin-bottom: 1rem;
}
main li {
  margin-bottom: 0.4rem;
  line-height: 1.65;
}
main a {
  color: var(--c-accent);
  border-bottom: 1px solid rgba(255,0,110,0.3);
  transition: color var(--transition), border-color var(--transition), text-shadow var(--transition);
}
main a:hover {
  color: var(--c-primary);
  text-shadow: 0 0 8px var(--c-primary);
  border-bottom-color: var(--c-primary);
}
main strong { color: #fff; font-weight: 700; }
main em { color: var(--c-accent); font-style: normal; }
main code {
  font-family: var(--font-mono);
  background: rgba(255,0,110,0.1);
  border: 1px solid rgba(255,0,110,0.2);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.87em;
  color: var(--c-accent);
}
main pre {
  background: rgba(0,0,0,0.5);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  overflow-x: auto;
  margin-bottom: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #c0c0e0;
}

/* div 内部区块间距 */
main div[id] {
  padding-top: 16px;
  scroll-margin-top: 20px;
  margin-bottom: 2rem;
  border-top: 1px solid rgba(255,0,110,0.1);
}
main div[id]:first-child {
  border-top: none;
  padding-top: 0;
}

/* 卡片 */
.card, main .card {
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 1.2rem;
  border: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover, main .card:hover {
  border-color: var(--c-border);
  box-shadow: 0 0 20px rgba(255,0,110,0.12);
  transform: translateY(-2px);
}

/* blockquote */
main blockquote {
  border-left: 3px solid var(--c-primary);
  background: rgba(255,0,0,0.05);
  padding: 12px 18px;
  margin: 1rem 0 1.2rem;
  border-radius: 0 8px 8px 0;
  color: rgba(232,232,240,0.85);
  font-style: italic;
}

/* table */
main table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.2rem;
  font-size: 0.92rem;
}
main th {
  background: rgba(255,0,110,0.12);
  color: var(--c-accent);
  font-weight: 700;
  padding: 10px 14px;
  border-bottom: 2px solid var(--c-border);
  text-align: left;
}
main td {
  padding: 9px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  vertical-align: top;
}
main tr:hover td {
  background: rgba(255,255,255,0.025);
}

/* ── 页脚 ── */
footer {
  background: rgba(0,0,0,0.5);
  border-top: 1px solid var(--c-border);
}
footer > div.footer-brand-section {
  padding: 28px 40px 0;
  border-bottom: 1px solid rgba(255,0,110,0.08);
}
footer > div.footer-copy-section {
  padding: 14px 40px 22px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-mega-brand {
  font-size: clamp(2.2rem, 6vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: transparent;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  background-clip: text;
  line-height: 1;
  user-select: none;
  opacity: 0.18;
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--c-muted);
  line-height: 1.5;
}
.footer-link {
  font-size: 0.82rem;
  color: var(--c-muted);
  border-bottom: 1px solid rgba(136,136,170,0.3);
}
.footer-link:hover { color: var(--c-accent); }

/* ── Parallax scroll 装饰（JS 辅助）── */
[data-parallax] {
  will-change: transform;
}

/* ── 动效：hover micro-interaction ── */
@media (prefers-reduced-motion: no-preference) {
  .nav-link {
    position: relative;
    overflow: hidden;
  }
  .nav-link::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    width: 0; height: 100%;
    background: rgba(255,0,0,0.04);
    transition: width 0.2s ease;
    z-index: -1;
  }
  .nav-link:hover::after { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .scanlines { animation: none; }
  .glitch-text::before,
  .glitch-text::after { animation: none; opacity: 0; }
}

/* ── 响应式 ── */
@media (max-width: 900px) {
  :root { --sidebar-w: 190px; }
  .hero-content { max-width: 65%; padding: 36px 28px 36px 16px; }
}

@media (max-width: 700px) {
  :root { --sidebar-w: 0px; }

  .sidebar {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: auto;
    max-height: 100vh;
    flex-direction: row;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 1px solid var(--c-border);
    overflow: visible;
    z-index: 200;
    background: rgba(10,10,26,0.98);
  }
  .sidebar-brand {
    padding: 12px 16px;
    border-bottom: none;
    border-right: 1px solid var(--c-border);
  }
  .sidebar nav {
    flex: 1;
    overflow-x: auto;
    padding: 0;
  }
  .sidebar nav ul {
    flex-direction: row;
    gap: 0;
    overflow-x: auto;
    padding: 0 4px;
  }
  .sidebar nav ul li { flex-shrink: 0; }
  .nav-link {
    padding: 12px 12px;
    border-left: none;
    border-bottom: 3px solid transparent;
    font-size: 0.8rem;
    min-height: 48px;
  }
  .nav-link:hover, .nav-link:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--c-primary);
  }
  .nav-dot { display: none; }
  .sidebar-search { display: none; }
  .sidebar-footer-tip { display: none; }

  .main-area {
    margin-left: 0;
    padding-top: 60px;
  }

  .hero-section { min-height: 42vh; }
  .hero-inner { min-height: 42vh; }
  .hero-content {
    max-width: 100%;
    margin: 0;
    padding: 28px 20px;
    text-align: right;
  }
  .hero-title { font-size: clamp(1.5rem, 7vw, 2.4rem); }

  main > article {
    padding: 28px 18px 48px;
  }
  main h2 { font-size: 1.2rem; }

  footer > div.footer-brand-section { padding: 18px 20px 0; }
  footer > div.footer-copy-section { padding: 12px 20px 18px; flex-direction: column; align-items: flex-start; gap: 6px; }
  .footer-mega-brand { font-size: 2.2rem; }
}

@media (max-width: 480px) {
  html { font-size: 15px; }
  main > article { padding: 20px 14px 36px; }
  .hero-grid-bg { background-size: 28px 28px; }
}