@import url('https://fonts.googleapis.com/css2?family=Exo:wght@300;400;500;600;700&family=Roboto+Mono:wght@300;400;500;700&display=swap');

/* ── 变量 ── */
:root {
  --clr-bg: #0d0d0d;
  --clr-primary: #8000ff;
  --clr-accent: #ff00ff;
  --clr-text: #c8c8e8;
  --clr-text-dim: #6a6a8a;
  --clr-border: rgba(128, 0, 255, 0.35);
  --clr-border-accent: rgba(255, 0, 255, 0.4);
  --clr-surface: rgba(20, 0, 40, 0.7);
  --clr-surface-2: rgba(30, 0, 60, 0.5);
  --font-mono: 'Roboto Mono', 'Courier New', monospace;
  --font-ui: 'Exo', 'Roboto Mono', monospace;
  --nav-h: 56px;
  --bottom-bar-h: 56px;
  --radius: 10px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 重置 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-size: 16px;
  background: var(--clr-bg);
}
body, .dark-body {
  font-family: var(--font-mono);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--clr-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--clr-primary); }
ul { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-ui); line-height: 1.3; }

/* ── 扫描线覆层 ── */
.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0, 0, 0, 0.12) 3px,
    rgba(0, 0, 0, 0.12) 4px
  );
  mix-blend-mode: multiply;
}

/* ── Glitch 动画 ── */
@keyframes glitch-1 {
  0%, 100% { clip-path: inset(0 0 95% 0); transform: translate(-3px, 0); }
  20%       { clip-path: inset(30% 0 50% 0); transform: translate(3px, 0); }
  40%       { clip-path: inset(70% 0 10% 0); transform: translate(-2px, 0); }
  60%       { clip-path: inset(50% 0 30% 0); transform: translate(2px, 0); }
  80%       { clip-path: inset(10% 0 80% 0); transform: translate(-1px, 0); }
}
@keyframes glitch-2 {
  0%, 100% { clip-path: inset(80% 0 5% 0); transform: translate(3px, 0); }
  20%       { clip-path: inset(10% 0 70% 0); transform: translate(-3px, 0); }
  40%       { clip-path: inset(50% 0 30% 0); transform: translate(2px, 0); }
  60%       { clip-path: inset(20% 0 60% 0); transform: translate(-2px, 0); }
  80%       { clip-path: inset(60% 0 20% 0); transform: translate(1px, 0); }
}
@keyframes hud-spin {
  to { transform: rotate(360deg); }
}
@keyframes hud-spin-rev {
  to { transform: rotate(-360deg); }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
@keyframes reveal-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes neon-pulse {
  0%, 100% { text-shadow: 0 0 8px var(--clr-primary), 0 0 20px var(--clr-primary); }
  50%       { text-shadow: 0 0 4px var(--clr-primary), 0 0 40px var(--clr-accent), 0 0 80px var(--clr-accent); }
}

/* ── 全屏遮罩菜单 ── */
.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 8000;
  background: rgba(5, 0, 15, 0.97);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  border: 1px solid var(--clr-border);
}
.menu-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}
.overlay-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  background: none;
  border: 1px solid var(--clr-border-accent);
  color: var(--clr-accent);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  transition: background var(--transition), color var(--transition);
  min-height: 40px;
}
.overlay-close:hover {
  background: var(--clr-accent);
  color: var(--clr-bg);
}
.overlay-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4rem;
}
.overlay-link {
  font-family: var(--font-ui);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--clr-text);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
  padding: 0.3rem 1rem;
  transition: color var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.overlay-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  transition: width var(--transition);
}
.overlay-link:hover {
  color: var(--clr-accent);
}
.overlay-link:hover::after {
  width: 100%;
}
.overlay-brand {
  position: absolute;
  bottom: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--clr-text-dim);
  letter-spacing: 0.2em;
}

/* ── 顶部导航栏 ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1rem;
}
.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  min-height: 40px;
}
.logo-text {
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-primary);
  text-shadow: 0 0 10px var(--clr-primary);
  letter-spacing: 0.08em;
}
.logo-mark, .logo-img {
  height: 32px;
  width: auto;
}
.header-nav {
  flex: 1;
  overflow: hidden;
}
.header-nav p {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.2rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  align-items: center;
}
.header-nav p::-webkit-scrollbar { display: none; }
.nav-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--clr-text-dim);
  padding: 0.4rem 0.6rem;
  border: 1px solid transparent;
  border-radius: 4px;
  white-space: nowrap;
  letter-spacing: 0.05em;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition), border-color var(--transition), text-shadow var(--transition);
}
.nav-link:hover {
  color: var(--clr-accent);
  border-color: var(--clr-border-accent);
  text-shadow: 0 0 8px var(--clr-accent);
}
.hamburger {
  flex-shrink: 0;
  background: none;
  border: 1px solid var(--clr-border);
  border-radius: 4px;
  cursor: pointer;
  padding: 0.45rem 0.55rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 40px;
  min-width: 40px;
  justify-content: center;
  align-items: center;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--clr-primary);
  box-shadow: 0 0 6px var(--clr-primary);
  transition: background var(--transition);
}
.hamburger:hover span {
  background: var(--clr-accent);
  box-shadow: 0 0 6px var(--clr-accent);
}

/* ── 主体 ── */
.site-main {
  padding-top: calc(var(--nav-h) + 0px);
  padding-bottom: calc(var(--bottom-bar-h) + 2rem);
  min-height: 100vh;
}
.page-article {
  width: 100%;
}

/* ── Hero ── */
.hero-section {
  position: relative;
  min-height: 45vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 3rem 1.5rem 4rem;
  scroll-margin-top: var(--nav-h);
}
.hero-inner {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 3rem;
  position: relative;
  z-index: 2;
}
.hero-text {
  flex: 1;
  min-width: 0;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--clr-primary);
  letter-spacing: 0.18em;
}
.terminal-prefix {
  color: var(--clr-accent);
  animation: blink 1.2s step-end infinite;
}
.hero-h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 10px var(--clr-primary), 0 0 30px var(--clr-primary);
  letter-spacing: 0.04em;
  margin-bottom: 1.2rem;
  position: relative;
  animation: neon-pulse 3s ease-in-out infinite;
}
.hero-h1.glitch::before,
.hero-h1.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  opacity: 0.7;
}
.hero-h1.glitch::before {
  color: var(--clr-accent);
  animation: glitch-1 4s infinite linear;
}
.hero-h1.glitch::after {
  color: var(--clr-primary);
  animation: glitch-2 4s infinite linear;
}
.hero-desc {
  font-size: 1rem;
  color: var(--clr-text);
  max-width: 540px;
  margin-bottom: 1.8rem;
  line-height: 1.8;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 1.8rem;
  border: 1px solid var(--clr-primary);
  color: var(--clr-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  border-radius: 4px;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  min-height: 44px;
  text-shadow: 0 0 6px var(--clr-primary);
  box-shadow: 0 0 10px rgba(128, 0, 255, 0.2);
}
.hero-cta:hover {
  background: var(--clr-primary);
  color: #fff;
  box-shadow: 0 0 25px rgba(128, 0, 255, 0.6);
  text-shadow: none;
}
.hero-deco {
  flex-shrink: 0;
  width: 180px;
  height: 180px;
  position: relative;
  display: none;
}
.hud-ring {
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--clr-primary);
  box-shadow: 0 0 12px rgba(128, 0, 255, 0.4);
  animation: hud-spin 8s linear infinite;
  opacity: 0.6;
}
.hud-ring--2 {
  inset: 30px;
  border-color: var(--clr-accent);
  box-shadow: 0 0 10px rgba(255, 0, 255, 0.35);
  animation-name: hud-spin-rev;
  animation-duration: 5s;
}
.hud-cross {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hud-cross::before,
.hud-cross::after {
  content: '';
  position: absolute;
  background: var(--clr-accent);
  opacity: 0.5;
}
.hud-cross::before { width: 1px; height: 60%; }
.hud-cross::after  { height: 1px; width: 60%; }
.hud-label {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.55rem;
  font-family: var(--font-mono);
  color: var(--clr-text-dim);
  letter-spacing: 0.15em;
  white-space: nowrap;
}
.hero-slash {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: linear-gradient(
    135deg,
    transparent 49.5%,
    rgba(128, 0, 255, 0.15) 49.5%,
    rgba(255, 0, 255, 0.08) 100%
  );
  z-index: 1;
}

/* ── 内容区布局 ── */
.content-section {
  scroll-margin-top: var(--nav-h);
  padding: 2rem 1.5rem;
}
.content-layout {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.content-body {
  min-width: 0;
}

/* ── page.content 内部样式 ── */
.content-body h2,
.content-body h3 {
  font-family: var(--font-ui);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: #fff;
  position: relative;
}
.content-body h2 {
  font-size: 1.5rem;
  padding-left: 1rem;
  border-left: 3px solid var(--clr-primary);
  text-shadow: 0 0 8px rgba(128, 0, 255, 0.4);
}
.content-body h3 {
  font-size: 1.15rem;
  color: var(--clr-accent);
}
.content-body p {
  margin-bottom: 1.2rem;
  font-size: 1rem;
  color: var(--clr-text);
  line-height: 1.8;
}
.content-body ul,
.content-body ol {
  margin: 0 0 1.2rem 1.5rem;
  color: var(--clr-text);
}
.content-body li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}
.content-body section {
  margin-bottom: 3rem;
  padding: 1.5rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  scroll-margin-top: calc(var(--nav-h) + var(--bottom-bar-h) + 0.5rem);
}
.content-body section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent), transparent);
}
.content-body a {
  color: var(--clr-accent);
  border-bottom: 1px solid rgba(255, 0, 255, 0.3);
  transition: color var(--transition), border-color var(--transition);
}
.content-body a:hover {
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.content-body strong {
  color: #fff;
  font-weight: 600;
}
.content-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(128, 0, 255, 0.12);
  border: 1px solid var(--clr-border);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  color: var(--clr-accent);
}
.content-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}
.content-body th,
.content-body td {
  padding: 0.7rem 1rem;
  border: 1px solid var(--clr-border);
  text-align: left;
}
.content-body th {
  background: rgba(128, 0, 255, 0.15);
  color: var(--clr-primary);
  font-weight: 500;
}
.content-body small {
  font-size: 0.78rem;
  color: var(--clr-text-dim);
  letter-spacing: 0.12em;
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
}
.content-body small + h2,
.content-body small + h3 {
  margin-top: 0;
}

/* ── 侧边栏 ── */
.content-aside {
  padding: 1.5rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  height: fit-content;
}
.content-aside::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-primary));
}
.aside-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--clr-primary);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.4rem;
}
.aside-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1.2rem;
  text-shadow: 0 0 8px rgba(128, 0, 255, 0.3);
}
.aside-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}
.aside-nav-link {
  font-size: 0.82rem;
  color: var(--clr-text-dim);
  padding: 0.45rem 0.6rem;
  border: 1px solid transparent;
  border-radius: 4px;
  display: block;
  letter-spacing: 0.04em;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  min-height: 40px;
  line-height: 1;
  display: flex;
  align-items: center;
}
.aside-nav-link:hover {
  color: var(--clr-accent);
  border-color: var(--clr-border-accent);
  background: rgba(255, 0, 255, 0.05);
}
.aside-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  color: var(--clr-text-dim);
  font-family: var(--font-mono);
  padding-top: 1rem;
  border-top: 1px solid var(--clr-border);
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00ff88;
  box-shadow: 0 0 6px #00ff88;
  animation: blink 2s ease-in-out infinite;
  flex-shrink: 0;
}

/* ── 页脚 ── */
.site-footer {
  background: rgba(8, 0, 20, 0.95);
  border-top: 1px solid var(--clr-border);
  padding: 2.5rem 1.5rem 1.5rem;
  margin-bottom: var(--bottom-bar-h);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.footer-logo-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
}
.footer-desc {
  font-size: 0.85rem;
  color: var(--clr-text-dim);
  line-height: 1.7;
  max-width: 360px;
}
.footer-contact {
  font-size: 0.82rem;
  color: var(--clr-accent);
  font-family: var(--font-mono);
}
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-nav-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
  margin-top: 0.5rem;
  letter-spacing: 0.08em;
}
.footer-nav-link {
  font-size: 0.82rem;
  color: var(--clr-text-dim);
  padding: 0.3rem 0;
  transition: color var(--transition);
  letter-spacing: 0.04em;
  min-height: 40px;
  display: flex;
  align-items: center;
}
.footer-nav-link:hover {
  color: var(--clr-accent);
}
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1rem;
  border-top: 1px solid rgba(128, 0, 255, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-copy {
  font-size: 0.75rem;
  color: var(--clr-text-dim);
  font-family: var(--font-mono);
}
.footer-sig {
  font-size: 0.65rem;
  color: var(--clr-primary);
  font-family: var(--font-mono);
  letter-spacing: 0.15em;
  text-shadow: 0 0 6px var(--clr-primary);
}

/* ── 底部固定条 ── */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bottom-bar-h);
  background: rgba(10, 0, 25, 0.96);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--clr-border);
  z-index: 900;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.5rem;
}
.bottom-bar-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 0 0.5rem;
  border-right: 1px solid var(--clr-border);
}
.bottom-bar-links {
  flex: 1;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  gap: 0;
}
.bottom-bar-links::-webkit-scrollbar { display: none; }
.bottom-bar-link {
  font-size: 0.68rem;
  color: var(--clr-text-dim);
  white-space: nowrap;
  padding: 0 0.55rem;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  letter-spacing: 0.04em;
  border-right: 1px solid rgba(128, 0, 255, 0.1);
  transition: color var(--transition);
}
.bottom-bar-link:hover {
  color: var(--clr-accent);
}
.bottom-bar-menu {
  flex-shrink: 0;
  background: none;
  border: 1px solid var(--clr-border);
  border-radius: 4px;
  color: var(--clr-primary);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0 0.7rem;
  min-height: 40px;
  min-width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.bottom-bar-menu:hover {
  background: var(--clr-primary);
  color: #fff;
}

/* ── 滚动揭示动画 ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── 响应式 ── */
@media (min-width: 680px) {
  .hero-deco {
    display: block;
  }
  .content-layout {
    grid-template-columns: 1fr 260px;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .nav-link {
    font-size: 0.78rem;
    padding: 0.4rem 0.8rem;
  }
}
@media (min-width: 1024px) {
  .content-layout {
    grid-template-columns: 1fr 300px;
  }
  .hero-section {
    padding: 4rem 2.5rem 5rem;
  }
  .content-section {
    padding: 3rem 2.5rem;
  }
}

/* ── prefers-reduced-motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .hero-h1.glitch::before,
  .hero-h1.glitch::after { display: none; }
}

button[aria-expanded]{min-width:44px;min-height:44px}