@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=VT323&display=swap');

/* ============================================================
   CSS 自定义属性
   ============================================================ */
:root {
  --clr-bg: #172617;
  --clr-bg2: #1e321e;
  --clr-bg3: #0f1a0f;
  --clr-green: #69ff69;
  --clr-cyan: #00ffff;
  --clr-white: #e8ffe8;
  --clr-dim: rgba(105,255,105,0.15);
  --clr-dim2: rgba(0,255,255,0.12);
  --clr-border: rgba(105,255,105,0.3);
  --clr-border-c: rgba(0,255,255,0.3);
  --font-pixel: 'Press Start 2P', monospace;
  --font-vt: 'VT323', monospace;
  --font-sys: system-ui, -apple-system, sans-serif;
  --nav-h: 100px;
  --radius: 0px;
  --transition: 0.22s ease;
}

/* ============================================================
   重置
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--clr-bg);
  color: var(--clr-white);
  font-family: var(--font-vt);
  font-size: 1.1rem;
  line-height: 1.7;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--clr-cyan); text-decoration: none; }
a:hover { color: var(--clr-green); }
ul, ol { list-style: none; }
h1,h2,h3,h4 { line-height: 1.3; }

/* ============================================================
   scroll-margin-top  (sticky nav 补偿)
   ============================================================ */
div[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }

/* ============================================================
   全局霓虹工具
   ============================================================ */
.neon-green {
  color: var(--clr-green);
  text-shadow: 0 0 8px var(--clr-green), 0 0 20px rgba(105,255,105,0.5);
}
.neon-cyan {
  color: var(--clr-cyan);
  text-shadow: 0 0 8px var(--clr-cyan), 0 0 20px rgba(0,255,255,0.5);
}

/* ============================================================
   站点包裹
   ============================================================ */
.site-wrapper { min-height: 100vh; display: flex; flex-direction: column; }

/* ============================================================
   顶部 HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--clr-bg3);
  border-bottom: 2px solid var(--clr-border);
  box-shadow: 0 0 18px rgba(105,255,105,0.18);
}

.header-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  border-bottom: 1px solid var(--clr-border);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 4px 0;
}

.brand-text {
  font-family: var(--font-pixel);
  font-size: clamp(0.55rem, 2vw, 0.85rem);
  color: var(--clr-green);
  text-shadow: 0 0 10px var(--clr-green), 0 0 30px rgba(105,255,105,0.4);
  letter-spacing: 0.05em;
  line-height: 1.4;
  word-break: break-all;
}

.brand-logo { height: 40px; width: auto; }

/* 汉堡按钮 */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--clr-border);
  padding: 10px 12px;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.nav-toggle:hover {
  border-color: var(--clr-green);
  box-shadow: 0 0 10px rgba(105,255,105,0.4);
}
.hamburger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-green);
  box-shadow: 0 0 6px var(--clr-green);
  transition: background var(--transition);
}

/* 菜单行 */
.header-menu-row {
  padding: 0 24px;
  background: var(--clr-bg3);
}

.desktop-nav ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.desktop-nav ol li a {
  display: flex;
  align-items: center;
  font-family: var(--font-pixel);
  font-size: 0.45rem;
  color: var(--clr-white);
  padding: 12px 14px;
  min-height: 44px;
  border-right: 1px solid var(--clr-border);
  transition: color var(--transition), background var(--transition), text-shadow var(--transition);
  white-space: nowrap;
  letter-spacing: 0.03em;
}
.desktop-nav ol li:first-child a { border-left: 1px solid var(--clr-border); }
.desktop-nav ol li a:hover {
  color: var(--clr-green);
  background: var(--clr-dim);
  text-shadow: 0 0 8px var(--clr-green);
}

/* ============================================================
   全屏遮罩菜单
   ============================================================ */
.fullscreen-nav {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(15,26,15,0.97);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
}
.fullscreen-nav[hidden] { display: none; }

.nav-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: transparent;
  border: 1px solid var(--clr-border);
  color: var(--clr-cyan);
  font-size: 1.6rem;
  padding: 8px 16px;
  min-height: 44px;
  min-width: 44px;
  cursor: pointer;
  font-family: var(--font-vt);
  transition: color var(--transition), box-shadow var(--transition);
}
.nav-close:hover {
  color: var(--clr-green);
  box-shadow: 0 0 12px rgba(105,255,105,0.4);
}

.fullscreen-nav-ol {
  counter-reset: nav-cnt;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}

.fullscreen-nav-ol li { counter-increment: nav-cnt; }

.fullscreen-nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-pixel);
  font-size: clamp(0.6rem, 2.5vw, 1rem);
  color: var(--clr-white);
  padding: 14px 40px;
  min-height: 52px;
  border: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition), text-shadow var(--transition);
}
.fullscreen-nav-link::before {
  content: counter(nav-cnt, decimal-leading-zero);
  font-family: var(--font-pixel);
  font-size: 0.5em;
  color: var(--clr-cyan);
  opacity: 0.7;
}
.fullscreen-nav-link:hover {
  color: var(--clr-green);
  border-color: var(--clr-border);
  text-shadow: 0 0 12px var(--clr-green);
}

/* ============================================================
   HERO
   ============================================================ */
.hero-section {
  position: relative;
  min-height: 45vh;
  background: linear-gradient(135deg, #0f1a0f 0%, #1a3a1a 60%, #0d2a2a 100%);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero-dot-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(105,255,105,0.25) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(0,255,255,0.06) 50%, transparent 70%);
  animation: hero-scan 4s linear infinite;
  pointer-events: none;
}
@keyframes hero-scan {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  align-items: center;
  padding: 48px 24px 56px;
}

.hero-content {
  max-width: 680px;
  text-align: left;
}

.hero-eyebrow {
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--clr-cyan);
  letter-spacing: 0.15em;
  margin-bottom: 16px;
  text-shadow: 0 0 8px var(--clr-cyan);
}

.hero-h1 {
  font-family: var(--font-pixel);
  font-size: clamp(0.9rem, 3.5vw, 1.8rem);
  color: var(--clr-green);
  text-shadow: 0 0 14px var(--clr-green), 0 0 40px rgba(105,255,105,0.4);
  margin-bottom: 18px;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.hero-desc {
  font-family: var(--font-vt);
  font-size: 1.25rem;
  color: rgba(232,255,232,0.85);
  margin-bottom: 28px;
  max-width: 520px;
  line-height: 1.7;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  color: var(--clr-bg);
  background: linear-gradient(135deg, var(--clr-green), var(--clr-cyan));
  padding: 14px 28px;
  min-height: 48px;
  border: none;
  cursor: pointer;
  letter-spacing: 0.08em;
  box-shadow: 0 0 18px rgba(105,255,105,0.5), inset 0 1px 0 rgba(255,255,255,0.3);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  position: relative;
  overflow: hidden;
}
.hero-btn::after {
  content: '';
  position: absolute;
  top: 0; left: -75%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
  transition: left 0.4s ease;
}
.hero-btn:hover { transform: translateY(-2px); box-shadow: 0 0 28px rgba(105,255,105,0.7); filter: brightness(1.08); }
.hero-btn:hover::after { left: 150%; }

.hero-clip-bottom {
  position: relative;
  z-index: 2;
  height: 48px;
  background: var(--clr-bg);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  margin-top: -1px;
}

/* ============================================================
   MAIN 正文区
   ============================================================ */
.site-main { flex: 1; padding: 48px 0; }

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

.content-section { width: 100%; }

.content-article { width: 100%; }

.content-with-aside {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  align-items: start;
}

/* ============================================================
   正文内部样式
   ============================================================ */
.content-body {
  min-width: 0;
}

.content-body h2 {
  font-family: var(--font-pixel);
  font-size: clamp(0.7rem, 2vw, 1rem);
  color: var(--clr-green);
  text-shadow: 0 0 10px rgba(105,255,105,0.5);
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--clr-border);
  letter-spacing: 0.04em;
}

.content-body h3 {
  font-family: var(--font-pixel);
  font-size: clamp(0.55rem, 1.5vw, 0.75rem);
  color: var(--clr-cyan);
  margin: 28px 0 12px;
}

.content-body p {
  font-family: var(--font-vt);
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--clr-white);
  margin-bottom: 16px;
}

.content-body ul, .content-body ol {
  margin: 16px 0 20px 20px;
}
.content-body ul { list-style: disc; }
.content-body ol { list-style: decimal; }

.content-body li {
  font-family: var(--font-vt);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 8px;
  color: var(--clr-white);
}

.content-body a {
  color: var(--clr-cyan);
  border-bottom: 1px solid var(--clr-border-c);
  transition: color var(--transition), border-color var(--transition);
}
.content-body a:hover {
  color: var(--clr-green);
  border-color: var(--clr-border);
}

.content-body strong { color: var(--clr-green); }

.content-body div {
  padding: 36px 0;
  border-bottom: 1px solid rgba(105,255,105,0.1);
}
.content-body div:last-child { border-bottom: none; }

/* small 眉题 */
.content-body small,
.aside-eyebrow,
.footer-eyebrow {
  display: block;
  font-family: var(--font-pixel);
  font-size: 0.4rem;
  color: var(--clr-cyan);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
  opacity: 0.8;
}

/* ============================================================
   ASIDE 右侧栏
   ============================================================ */
.content-aside {
  position: sticky;
  top: calc(var(--nav-h) + 20px);
}

.aside-inner {
  background: var(--clr-bg2);
  border: 1px solid var(--clr-border);
  padding: 24px;
  box-shadow: 0 0 16px rgba(105,255,105,0.1);
}

.aside-title {
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  color: var(--clr-green);
  margin-bottom: 18px;
  text-shadow: 0 0 8px rgba(105,255,105,0.4);
}

.aside-nav-list { display: flex; flex-direction: column; gap: 2px; }

.aside-nav-list li a {
  display: flex;
  align-items: center;
  font-family: var(--font-vt);
  font-size: 1.05rem;
  color: var(--clr-white);
  padding: 9px 12px;
  min-height: 40px;
  border-left: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.aside-nav-list li a:hover {
  color: var(--clr-green);
  border-left-color: var(--clr-green);
  background: var(--clr-dim);
}

.aside-badge {
  margin-top: 20px;
  padding: 10px 12px;
  background: var(--clr-dim2);
  border: 1px solid var(--clr-border-c);
  font-family: var(--font-pixel);
  font-size: 0.38rem;
  color: var(--clr-cyan);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.05em;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-green);
  box-shadow: 0 0 6px var(--clr-green);
  animation: pulse-dot 1.6s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--clr-bg3);
  border-top: 2px solid var(--clr-border);
  box-shadow: 0 -4px 30px rgba(105,255,105,0.1);
  margin-top: auto;
}

.footer-top {
  padding: 32px 24px 8px;
  overflow: hidden;
}

.footer-brand-super {
  font-family: var(--font-pixel);
  font-size: clamp(1.2rem, 6vw, 3.5rem);
  color: transparent;
  background: linear-gradient(135deg, var(--clr-green), var(--clr-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  opacity: 0.12;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: clip;
  pointer-events: none;
  letter-spacing: 0.05em;
  line-height: 1;
}

.footer-cols {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.5fr;
  gap: 40px;
  border-bottom: 1px solid rgba(105,255,105,0.12);
}

.footer-brand-name {
  font-family: var(--font-pixel);
  font-size: 0.65rem;
  color: var(--clr-green);
  text-shadow: 0 0 8px rgba(105,255,105,0.5);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
}

.footer-tagline {
  font-family: var(--font-vt);
  font-size: 1rem;
  color: rgba(232,255,232,0.6);
  line-height: 1.7;
}

.footer-col small { margin-bottom: 12px; }

.footer-col address {
  font-style: normal;
}

.footer-col ul { display: flex; flex-direction: column; gap: 4px; margin-top: 4px; }

.footer-col ul li a {
  display: flex;
  align-items: center;
  font-family: var(--font-vt);
  font-size: 1.05rem;
  color: rgba(232,255,232,0.7);
  padding: 7px 0;
  min-height: 40px;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.footer-col ul li a:hover {
  color: var(--clr-cyan);
  border-bottom-color: var(--clr-border-c);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-family: var(--font-pixel);
  font-size: 0.38rem;
  color: rgba(232,255,232,0.45);
  letter-spacing: 0.08em;
  /* 确保 tap 区域足够 */
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 0;
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}
.footer-bottom-links li a {
  font-family: var(--font-pixel);
  font-size: 0.38rem;
  color: rgba(0,255,255,0.55);
  padding: 8px 4px;
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}
.footer-bottom-links li a:hover { color: var(--clr-cyan); }

/* ============================================================
   scroll reveal 动效
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.55s ease, transform 0.55s ease;
  }
  .reveal.revealed {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   响应式断点
   ============================================================ */
@media (max-width: 900px) {
  .content-with-aside {
    grid-template-columns: 1fr;
  }
  .content-aside {
    position: static;
  }
  .footer-cols {
    grid-template-columns: 1fr 1fr;
  }
  .footer-col-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  :root { --nav-h: 110px; }

  .desktop-nav ol {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  .desktop-nav ol li a {
    font-size: 0.38rem;
    padding: 10px 10px;
    min-height: 44px;
  }

  .hero-inner { padding: 36px 16px 44px; }

  .hero-h1 { font-size: clamp(0.75rem, 5vw, 1.1rem); }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .wrap { padding: 0 16px; }

  .aside-inner { padding: 18px; }

  .fullscreen-nav-link {
    font-size: 0.55rem;
    padding: 12px 24px;
  }
}

@media (max-width: 375px) {
  .brand-text { font-size: 0.48rem; }
  .hero-h1 { font-size: 0.7rem; }
  .brand-link { min-height: 44px; }
}