@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@300;400;500;600;700&family=Orbitron:wght@400;500;600;700&display=swap');

/* ===== 变量 ===== */
:root {
  --green: #87ff71;
  --blue: #01cdfe;
  --dark: #192617;
  --dark2: #0f1a0e;
  --dark3: #1e3019;
  --pink: #ff71ce;
  --purple: #b967ff;
  --white: #e8ffe4;
  --muted: #5a8c52;
  --card-radius: 28px;
  --nav-h: 48px;
  --brand-h: 56px;
  --header-h: calc(var(--brand-h) + var(--nav-h));
  --font-head: 'Orbitron', 'Exo 2', monospace;
  --font-body: 'Exo 2', system-ui, sans-serif;
  --glow-green: 0 0 8px #87ff71, 0 0 24px #87ff7180;
  --glow-blue: 0 0 8px #01cdfe, 0 0 24px #01cdfe80;
  --glow-pink: 0 0 8px #ff71ce, 0 0 24px #ff71ce80;
  --transition: 0.3s 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(--dark2);
  color: var(--white);
}
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--dark2);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green); }
ul, ol { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; }

/* ===== 扫描线效果 ===== */
.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
}

/* ===== 网格背景 ===== */
.grid-bg {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(rgba(135, 255, 113, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(135, 255, 113, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ===== 页头 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 26, 14, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(135, 255, 113, 0.25);
  box-shadow: 0 2px 32px rgba(135, 255, 113, 0.1);
}

.brand-row {
  height: var(--brand-h);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(1, 205, 254, 0.15);
}

.brand-inner {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo-link { display: flex; align-items: center; }
.brand-logo { height: 36px; width: auto; }

.brand-name {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--green);
  text-shadow: var(--glow-green);
  text-transform: uppercase;
}
.brand-name:hover { color: var(--green); text-shadow: var(--glow-green), 0 0 48px #87ff71; }

.nav-row {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 0 16px;
}

.nav-link {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--blue);
  padding: 10px 14px;
  min-height: 40px;
  display: flex;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 6px;
  transition: all var(--transition);
  text-transform: uppercase;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 14px;
  right: 14px;
  height: 1px;
  background: var(--green);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav-link:hover {
  color: var(--green);
  border-color: rgba(135, 255, 113, 0.3);
  background: rgba(135, 255, 113, 0.06);
  text-shadow: var(--glow-green);
}
.nav-link:hover::after { transform: scaleX(1); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(160deg, #0a1409 0%, #192617 35%, #0d1a2e 70%, #1a0a2e 100%);
  scroll-margin-top: var(--header-h);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(1, 205, 254, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(1, 205, 254, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  transform: perspective(600px) rotateX(20deg) translateY(30%);
  transform-origin: bottom;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 24px 80px;
  max-width: 800px;
}

.hero-eyebrow {
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--blue);
  text-shadow: var(--glow-blue);
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-eyebrow span { color: var(--pink); }

.hero-title {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--green);
  text-shadow: var(--glow-green), 0 0 60px rgba(135, 255, 113, 0.4);
  margin-bottom: 24px;
  animation: glitch-text 8s infinite;
}

.hero-sub {
  font-size: 1.125rem;
  color: rgba(232, 255, 228, 0.8);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-cta {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dark2);
  background: linear-gradient(135deg, var(--green), var(--blue));
  padding: 14px 36px;
  border-radius: 50px;
  min-height: 48px;
  box-shadow: var(--glow-green), var(--glow-blue);
  transition: all var(--transition);
}
.hero-cta:hover {
  color: var(--dark2);
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 0 16px #87ff71, 0 0 40px #87ff7180, 0 0 16px #01cdfe, 0 6px 24px rgba(0,0,0,0.4);
}

.hero-arc {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--dark2);
  clip-path: ellipse(55% 100% at 50% 100%);
  z-index: 3;
}

/* ===== 动画 ===== */
@keyframes glitch-text {
  0%, 92%, 100% { text-shadow: var(--glow-green), 0 0 60px rgba(135, 255, 113, 0.4); transform: none; }
  93% { text-shadow: 3px 0 var(--pink), -3px 0 var(--blue); transform: skewX(1deg); }
  94% { text-shadow: -3px 0 var(--pink), 3px 0 var(--blue); transform: skewX(-1deg); }
  95% { text-shadow: var(--glow-green); transform: none; }
  96% { text-shadow: 2px 0 var(--blue), -2px 0 var(--pink); transform: skewX(0.5deg); }
  97% { text-shadow: var(--glow-green); transform: none; }
}

@keyframes neon-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes reveal-up {
  from { opacity: 0; transform: translateY(32px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 主体布局 ===== */
main {
  position: relative;
  z-index: 1;
  padding: 40px 0 80px;
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== section + article 直接嵌套（契约必需）===== */
.content-section {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
}

.content-article {
  min-width: 0;
}

/* ===== aside ===== */
.site-aside {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  z-index: 10;
}

.aside-inner {
  background: rgba(15, 26, 14, 0.8);
  border: 1px solid rgba(135, 255, 113, 0.2);
  border-radius: 16px;
  padding: 24px 16px;
  backdrop-filter: blur(8px);
}

.aside-title {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(135, 255, 113, 0.15);
}
.aside-title span { color: var(--muted); }

.aside-nav li { margin-bottom: 4px; }
.aside-nav a {
  display: block;
  font-size: 0.8rem;
  font-family: var(--font-head);
  letter-spacing: 0.05em;
  color: rgba(232, 255, 228, 0.6);
  padding: 8px 10px;
  min-height: 40px;
  display: flex;
  align-items: center;
  border-radius: 8px;
  transition: all var(--transition);
  border-left: 2px solid transparent;
}
.aside-nav a:hover {
  color: var(--green);
  background: rgba(135, 255, 113, 0.08);
  border-left-color: var(--green);
  text-shadow: var(--glow-green);
  padding-left: 14px;
}

.aside-badge {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--green);
  text-shadow: var(--glow-green);
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: var(--glow-green);
  animation: neon-pulse 2s infinite;
  flex-shrink: 0;
}

/* ===== 正文内容 ===== */
.page-content {
  /* 来自 page.content 的 HTML 样式 */
}

/* page.content 内部的 section 样式 */
.page-content section {
  margin-bottom: 80px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-content h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--green);
  text-shadow: var(--glow-green);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(135, 255, 113, 0.2);
  letter-spacing: 0.06em;
}

.page-content h2 span {
  display: inline;
}

.page-content h3 {
  font-size: 1.25rem;
  color: var(--blue);
  text-shadow: var(--glow-blue);
  margin: 28px 0 14px;
  letter-spacing: 0.05em;
}

.page-content h3 span {
  display: inline;
}

.page-content p {
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(232, 255, 228, 0.85);
  margin-bottom: 16px;
}

.page-content ul, .page-content ol {
  margin: 16px 0 20px 0;
  padding-left: 0;
}

.page-content ul li, .page-content ol li {
  position: relative;
  padding: 8px 0 8px 24px;
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(232, 255, 228, 0.82);
}

.page-content ul li::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: var(--green);
  font-size: 0.65rem;
  top: 12px;
}

.page-content ol {
  counter-reset: ol-counter;
}
.page-content ol li {
  counter-increment: ol-counter;
}
.page-content ol li::before {
  content: counter(ol-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  color: var(--blue);
  font-family: var(--font-head);
  font-size: 0.7rem;
  top: 10px;
}

.page-content strong {
  color: var(--green);
  font-weight: 600;
}

.page-content em {
  color: var(--pink);
  font-style: normal;
}

.page-content a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(1, 205, 254, 0.4);
}
.page-content a:hover {
  color: var(--green);
  text-decoration-color: var(--green);
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.9rem;
}
.page-content th {
  background: rgba(135, 255, 113, 0.1);
  color: var(--green);
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid rgba(135, 255, 113, 0.3);
}
.page-content td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(135, 255, 113, 0.08);
  color: rgba(232, 255, 228, 0.8);
}
.page-content tr:hover td { background: rgba(135, 255, 113, 0.04); }

/* 卡片式内容块（用于 page.content 内部的卡片） */
.page-content .card,
.page-content [class*="card"] {
  background: rgba(15, 26, 14, 0.6);
  border: 1px solid rgba(135, 255, 113, 0.15);
  border-bottom: 3px solid var(--green);
  border-radius: var(--card-radius);
  padding: 28px;
  margin-bottom: 20px;
  transition: all var(--transition);
  backdrop-filter: blur(4px);
}
.page-content .card:hover,
.page-content [class*="card"]:hover {
  border-color: rgba(135, 255, 113, 0.4);
  border-bottom-color: var(--blue);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(135, 255, 113, 0.1);
}

/* 问答 FAQ */
.page-content dl {
  margin: 20px 0;
}
.page-content dl dt {
  font-family: var(--font-head);
  font-size: 0.9rem;
  color: var(--blue);
  text-shadow: var(--glow-blue);
  padding: 14px 0 8px;
  border-top: 1px solid rgba(1, 205, 254, 0.15);
  letter-spacing: 0.04em;
}
.page-content dl dd {
  font-size: 0.95rem;
  color: rgba(232, 255, 228, 0.8);
  padding: 0 0 16px 16px;
  border-left: 2px solid rgba(1, 205, 254, 0.3);
  margin: 8px 0 0 0;
}

/* blockquote */
.page-content blockquote {
  border-left: 3px solid var(--pink);
  padding: 12px 20px;
  margin: 20px 0;
  background: rgba(255, 113, 206, 0.06);
  border-radius: 0 12px 12px 0;
  color: rgba(232, 255, 228, 0.75);
  font-style: italic;
}

/* ===== 页脚 ===== */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--dark2);
  border-top: 1px solid rgba(135, 255, 113, 0.15);
}

.footer-cta-block {
  background: linear-gradient(135deg, rgba(135, 255, 113, 0.08), rgba(1, 205, 254, 0.08));
  border-bottom: 1px solid rgba(135, 255, 113, 0.15);
  padding: 60px 24px;
  text-align: center;
}

.footer-cta-inner {
  max-width: 600px;
  margin: 0 auto;
}

.footer-cta-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--green);
  text-shadow: var(--glow-green);
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}
.footer-cta-title span { display: inline; }

.footer-cta-desc {
  font-size: 1rem;
  color: rgba(232, 255, 228, 0.7);
  line-height: 1.7;
  margin-bottom: 32px;
}

.footer-cta-btn {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dark2);
  background: var(--green);
  padding: 12px 32px;
  min-height: 44px;
  border-radius: 50px;
  box-shadow: var(--glow-green);
  transition: all var(--transition);
}
.footer-cta-btn:hover {
  color: var(--dark2);
  background: var(--blue);
  box-shadow: var(--glow-blue);
  transform: translateY(-2px);
}

.footer-body {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 32px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-dl dt {
  font-family: var(--font-head);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green);
  text-shadow: var(--glow-green);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(135, 255, 113, 0.2);
}

.footer-dl dd {
  margin-bottom: 8px;
}

.footer-dl a {
  font-size: 0.875rem;
  color: rgba(232, 255, 228, 0.6);
  display: inline-block;
  padding: 5px 0;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: all var(--transition);
  letter-spacing: 0.03em;
}
.footer-dl a:hover {
  color: var(--blue);
  text-shadow: var(--glow-blue);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(135, 255, 113, 0.1);
  padding: 24px;
  text-align: center;
}

.copyright {
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 8px;
}

.footer-note {
  font-size: 0.8rem;
  color: rgba(90, 140, 82, 0.6);
  letter-spacing: 0.03em;
}

/* ===== Scroll Reveal ===== */
.page-content section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.page-content section.is-visible {
  opacity: 1;
  transform: none;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .content-section {
    grid-template-columns: 1fr;
  }
  .site-aside {
    position: static;
    order: -1;
  }
  .aside-inner {
    padding: 16px;
  }
  .aside-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
  }
  .aside-nav li { margin-bottom: 0; }
  .aside-nav a {
    font-size: 0.7rem;
    padding: 6px 10px;
    min-height: 40px;
    border-left: none;
    border: 1px solid rgba(135, 255, 113, 0.15);
    border-radius: 6px;
  }

  .footer-nav {
    grid-template-columns: 1fr 1fr;
  }
  .footer-dl:last-child {
    grid-column: 1 / -1;
  }

  .hero-title {
    font-size: clamp(1.6rem, 8vw, 2.5rem);
  }

  .nav-link {
    font-size: 0.68rem;
    padding: 10px 8px;
    letter-spacing: 0.04em;
  }

  .brand-name {
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .footer-nav {
    grid-template-columns: 1fr;
  }
  .footer-dl:last-child {
    grid-column: auto;
  }
  .nav-inner {
    gap: 2px;
  }
  .nav-link {
    font-size: 0.63rem;
    padding: 10px 6px;
  }
  .wrap {
    padding: 0 16px;
  }
}

/* ===== 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; }
  .page-content section {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

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