:root{
  --space-blue:#0B1E3A;
  --electric-purple:#8A2BE2;
  --neon-green:#39FF14;
  --signal-orange:#FF6B00;
  --cloud-blue:#D0E1F9;
  --mist-lilac:#F5E6FF;
  --void-black:#071023;
  --glass-white:#FFFFFF;
  --line-silver:#2A3B5C;
  --title-font:Impact,'Noto Sans SC','PingFang SC',sans-serif;
  --body-font:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --mono-font:'JetBrains Mono','Roboto Mono',monospace;
  --max-width:1440px;
  --header-h:76px;
  --radius:10px;
  --radius-lg:20px;
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  background:var(--void-black);
}

body{
  font-family:var(--body-font);
  background:
    radial-gradient(circle at 85% 10%, rgba(138,43,226,.28) 0, transparent 34%),
    radial-gradient(circle at 10% 30%, rgba(57,255,20,.08) 0, transparent 26%),
    linear-gradient(145deg, var(--space-blue) 0%, #0D2040 48%, var(--void-black) 100%);
  color:var(--cloud-blue);
  line-height:1.7;
  min-height:100vh;
  min-width:320px;
  position:relative;
}

#main-content{
  display:block;
  min-height:60vh;
  padding:0;
}

img,svg,video{max-width:100%;height:auto;display:block}

a{
  color:var(--glass-white);
  text-decoration:none;
  transition:color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s ease;
}

a:hover{
  color:var(--neon-green);
}

ul,ol{list-style:none}

:focus-visible{
  outline:2px solid var(--neon-green);
  outline-offset:4px;
  border-radius:4px;
}

.skip-link{
  position:fixed;
  top:-100px;
  left:16px;
  z-index:2010;
  background:var(--neon-green);
  color:#000;
  font-family:var(--mono-font);
  font-weight:700;
  font-size:.8rem;
  padding:10px 18px;
  border-radius:0 0 var(--radius) var(--radius);
  box-shadow:0 0 0 4px rgba(57,255,20,.2);
  transition:top .25s ease;
}

.skip-link:focus{
  top:0;
  color:#000;
}

.edge-data-track{
  position:fixed;
  top:0;
  right:0;
  width:6px;
  height:100vh;
  z-index:1010;
  pointer-events:none;
  background:linear-gradient(to bottom, var(--electric-purple), var(--neon-green) 30%, transparent 70%);
  background-size:100% 300%;
  animation:edgeDataScroll 4s linear infinite;
  opacity:.7;
}

@keyframes edgeDataScroll{
  0%{background-position:0 -100%;}
  100%{background-position:0 200%;}
}

/* ===== 框架式头部 ===== */
.frame-nav{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(7,16,35,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-silver);
  box-shadow:0 12px 40px rgba(0,0,0,.3);
}

.frame-nav__bar{
  max-width:var(--max-width);
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:var(--header-h);
  padding:0 clamp(16px, 4vw, 56px);
  width:100%;
}

.wordmark{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}

.wordmark__glow{
  width:18px;
  height:18px;
  border-radius:4px;
  background:linear-gradient(135deg, var(--electric-purple), var(--neon-green));
  box-shadow:0 0 16px rgba(138,43,226,.8), 0 0 8px rgba(57,255,20,.6);
  transform:rotate(45deg);
  display:inline-block;
  flex-shrink:0;
}

.wordmark__text{
  font-family:var(--title-font);
  font-size:1.5rem;
  letter-spacing:.04em;
  color:var(--glass-white);
  text-transform:uppercase;
  line-height:1;
}

.wordmark__tagline{
  font-family:var(--mono-font);
  font-size:.7rem;
  letter-spacing:.4em;
  color:var(--neon-green);
  border-left:1px solid var(--line-silver);
  padding-left:12px;
  margin-left:4px;
  white-space:nowrap;
}

.wordmark:hover .wordmark__glow{
  box-shadow:0 0 26px rgba(138,43,226,1), 0 0 12px rgba(57,255,20,.9);
}

/* 导航 */
.nav-links-wrap{
  display:block;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
}

.nav-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 16px;
  font-family:var(--body-font);
  font-weight:500;
  font-size:.95rem;
  color:var(--cloud-blue);
  border-radius:var(--radius);
  border:1px solid transparent;
  letter-spacing:.02em;
  position:relative;
  transform:skewX(-6deg);
  transition:all .22s ease;
}

.nav-link > *{
  transform:skewX(6deg);
}

.nav-link:hover{
  color:var(--glass-white);
  background:rgba(138,43,226,.2);
  border-color:rgba(138,43,226,.45);
  transform:skewX(-6deg) translateY(-2px);
}

.nav-link[aria-current="page"]{
  color:var(--glass-white);
  background:rgba(138,43,226,.18);
  border-left:3px solid var(--neon-green);
  font-weight:700;
}

/* 移动端按钮 */
.nav-toggle{
  display:none;
  appearance:none;
  background:transparent;
  border:1px solid var(--line-silver);
  border-radius:var(--radius);
  padding:10px 14px;
  cursor:pointer;
  flex-direction:column;
  gap:4px;
  align-items:center;
  justify-content:center;
  background:rgba(138,43,226,.15);
}

.nav-toggle__bar{
  width:22px;
  height:2px;
  background:var(--neon-green);
  border-radius:2px;
  transition:transform .22s ease, opacity .22s ease;
}

.nav-toggle__text{
  font-family:var(--mono-font);
  font-size:.6rem;
  color:var(--cloud-blue);
  letter-spacing:.1em;
  margin-top:2px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){
  transform:translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){
  opacity:0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){
  transform:translateY(-6px) rotate(-45deg);
}

.frame-nav__rush{
  height:3px;
  background:linear-gradient(90deg, transparent, var(--electric-purple) 20%, var(--neon-green) 50%, transparent 90%);
  opacity:.65;
}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--void-black);
  color:var(--cloud-blue);
  border-top:1px solid var(--line-silver);
  position:relative;
  margin-top:80px;
  overflow:hidden;
}

.site-footer__glow{
  height:2px;
  background:linear-gradient(90deg, transparent, var(--neon-green) 30%, var(--electric-purple) 70%, transparent);
  box-shadow:0 0 20px rgba(57,255,20,.4);
}

.site-footer__grid{
  max-width:var(--max-width);
  margin:0 auto;
  padding:64px clamp(16px, 4vw, 56px) 24px;
  display:grid;
  grid-template-columns:1.3fr .8fr 1fr 1.2fr;
  gap:48px;
}

.site-footer__brand .wordmark--footer{
  margin-bottom:12px;
}

.site-footer__statement{
  font-family:var(--mono-font);
  font-size:.85rem;
  line-height:1.8;
  color:var(--cloud-blue);
  border-left:3px solid var(--neon-green);
  padding-left:14px;
  margin-top:14px;
}

.site-footer__heading{
  font-family:var(--title-font);
  font-size:1rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--glass-white);
  margin-bottom:18px;
  position:relative;
}

.site-footer__heading::after{
  content:"";
  display:block;
  width:30px;
  height:2px;
  background:var(--electric-purple);
  margin-top:8px;
}

.site-footer__list li{
  margin-bottom:10px;
}

.site-footer__list a{
  font-size:.9rem;
  color:var(--cloud-blue);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}

.site-footer__list a:hover{
  color:var(--neon-green);
  border-bottom-color:var(--neon-green);
}

.site-footer__support{
  border:1px solid rgba(255,107,0,.32);
  border-radius:var(--radius);
  background:rgba(255,107,0,.06);
  padding:20px;
}

.site-footer__support-text{
  font-size:.85rem;
  line-height:1.8;
  color:var(--cloud-blue);
}

.site-footer__support-text a{
  color:var(--signal-orange);
  font-family:var(--mono-font);
  word-break:break-all;
}

.site-footer__bottom{
  border-top:1px solid var(--line-silver);
  max-width:var(--max-width);
  margin:0 auto;
  padding:20px clamp(16px, 4vw, 56px);
  display:flex;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  font-family:var(--mono-font);
  font-size:.75rem;
  color:#7893b3;
}

.site-footer__icp{
  font-family:var(--mono-font);
}

.site-footer__copyright{
  font-family:var(--mono-font);
}

/* ===== 通用内容容器 ===== */
.stack-block{
  background:linear-gradient(140deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border:1px solid var(--line-silver);
  border-radius:var(--radius-lg);
  padding:clamp(24px, 4vw, 44px);
  box-shadow:0 20px 50px rgba(0,0,0,.28);
  backdrop-filter:blur(6px);
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.stack-block:hover{
  border-color:rgba(57,255,20,.4);
  transform:translateY(-4px);
  box-shadow:0 26px 60px rgba(0,0,0,.42);
}

.stack-block + .stack-block{
  margin-top:32px;
}

.data-badge{
  display:inline-block;
  background:var(--signal-orange);
  color:#000;
  font-family:var(--mono-font);
  font-weight:700;
  font-size:.75rem;
  letter-spacing:.08em;
  padding:4px 12px;
  border-radius:999px;
  transform:rotate(-2deg);
  box-shadow:0 4px 14px rgba(255,107,0,.4);
}

.glow-line{
  height:2px;
  width:100%;
  background:linear-gradient(90deg, transparent, var(--electric-purple) 20%, var(--neon-green) 50%, var(--electric-purple) 80%, transparent);
  border:none;
  margin:24px 0;
  opacity:.6;
}

.section-title__kicker{
  font-family:var(--mono-font);
  color:var(--neon-green);
  font-size:.78rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  margin-bottom:4px;
}

.data-marquee{
  overflow:hidden;
  white-space:nowrap;
  background:rgba(7,16,35,.8);
  border-top:1px solid var(--line-silver);
  border-bottom:1px solid var(--line-silver);
  padding:12px 0;
  position:relative;
}

.data-marquee__content{
  display:flex;
  gap:48px;
  width:max-content;
  animation:marqueeScroll 30s linear infinite;
}

@keyframes marqueeScroll{
  0%{transform:translateX(0);}
  100%{transform:translateX(-50%);}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  background:linear-gradient(135deg, var(--electric-purple), #9A3CF0);
  color:#000;
  font-family:var(--body-font);
  font-weight:700;
  font-size:.95rem;
  padding:14px 32px;
  border:none;
  border-radius:var(--radius);
  cursor:pointer;
  min-height:48px;
  transform:skewX(-4deg);
  box-shadow:0 10px 30px rgba(138,43,226,.35);
  transition:transform .24s ease, box-shadow .24s ease, background .2s ease;
}

.btn > *{
  transform:skewX(4deg);
}

.btn:hover{
  transform:skewX(-4deg) translateY(-3px);
  box-shadow:0 18px 40px rgba(138,43,226,.55);
  background:linear-gradient(135deg, #9A3CF0, var(--electric-purple));
  color:#000;
}

.btn--ghost{
  background:transparent;
  border:1px solid var(--electric-purple);
  color:var(--glass-white);
  box-shadow:none;
}

.btn--ghost:hover{
  background:rgba(138,43,226,.14);
  border-color:var(--neon-green);
  color:var(--neon-green);
  box-shadow:none;
}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--mono-font);
  font-size:.78rem;
  color:#7893b3;
  margin-bottom:28px;
  padding:12px 0;
  border-bottom:1px solid rgba(42,59,92,.4);
}

.breadcrumb a{
  color:#9FB5D3;
}

.breadcrumb a:hover{
  color:var(--neon-green);
}

.breadcrumb__sep{
  color:var(--electric-purple);
  font-weight:700;
}

/* ===== 正文容器与网格 ===== */
.prose{
  font-size:1rem;
  line-height:1.9;
  color:var(--cloud-blue);
  max-width:820px;
}

.prose h2{
  font-family:var(--title-font);
  font-size:clamp(1.6rem, 3vw, 2.6rem);
  color:var(--glass-white);
  text-transform:uppercase;
  margin:48px 0 16px;
  letter-spacing:.04em;
  transform:skewX(-3deg);
}

.prose h3{
  font-family:var(--body-font);
  font-size:1.2rem;
  font-weight:700;
  color:var(--glass-white);
  margin:32px 0 12px;
  border-left:4px solid var(--electric-purple);
  padding-left:14px;
}

.prose p{
  margin-bottom:20px;
}

.prose ul{
  list-style:none;
  margin:0 0 24px;
}

.prose ul li{
  padding:8px 0 8px 18px;
  border-bottom:1px solid rgba(42,59,92,.3);
  position:relative;
}

.prose ul li::before{
  content:">";
  position:absolute;left:0;
  color:var(--neon-green);
  font-family:var(--mono-font);
  font-weight:700;
}

.prose a{
  color:var(--neon-green);
  border-bottom:1px dashed rgba(57,255,20,.4);
}

.prose a:hover{
  border-bottom-style:solid;
}

.prose code{
  font-family:var(--mono-font);
  background:rgba(138,43,226,.2);
  color:var(--mist-lilac);
  padding:2px 8px;
  border-radius:4px;
  font-size:.85em;
}

.content-grid{
  max-width:var(--max-width);
  margin:0 auto;
  padding:0 clamp(16px, 4vw, 56px);
}

.grid-2{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:28px;
}

.grid-3{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:24px;
}

/* ===== 图片容器基础规则（供页面阶段占位） ===== */
.img-stage{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(120deg, rgba(138,43,226,.12), rgba(57,255,20,.06)),
    repeating-linear-gradient(45deg, rgba(255,255,255,.02) 0 12px, transparent 12px 24px);
  border:1px solid var(--line-silver);
  border-radius:var(--radius);
  min-height:220px;
  display:flex;
  align-items:center;
  justify-content:center;
}

.img-stage::before{
  content:"IMG";
  font-family:var(--mono-font);
  font-size:.7rem;
  letter-spacing:.4em;
  color:rgba(255,255,255,.18);
  text-indent:.4em;
}

.img-stage--tall{
  min-height:340px;
}

.img-stage--wide{
  aspect-ratio:16/9;
}

.img-stage--hero{
  aspect-ratio:21/9;
}

.img-stage--glow{
  box-shadow:0 0 40px rgba(57,255,20,.08), inset 0 0 40px rgba(138,43,226,.08);
}

/* ===== 滚动进度条 ===== */
.scroll-track{
  position:fixed;
  top:0;
  left:0;
  height:3px;
  width:100%;
  z-index:2000;
  background:transparent;
  pointer-events:none;
}

.scroll-track__bar{
  height:100%;
  width:0;
  background:linear-gradient(90deg, var(--neon-green), var(--electric-purple));
  box-shadow:0 0 16px rgba(57,255,20,.8);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px){
  .site-footer__grid{
    grid-template-columns:1fr 1fr;
    gap:40px;
  }

  .grid-3{
    grid-template-columns:repeat(2, 1fr);
  }
}

@media (max-width: 768px){
  :root{
    --header-h:62px;
  }

  .frame-nav__bar{
    flex-wrap:wrap;
    gap:12px;
    padding-top:12px;
    padding-bottom:12px;
  }

  .wordmark{
    flex:1;
  }

  .wordmark__tagline{
    display:none;
  }

  .nav-toggle{
    display:inline-flex;
  }

  .nav-links-wrap{
    width:100%;
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease, padding .3s ease;
  }

  .nav-links-wrap[data-open="true"]{
    max-height:420px;
    padding-top:12px;
  }

  .nav-links{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }

  .nav-link{
    width:100%;
    transform:none;
    border-radius:0;
    border-left:3px solid transparent;
  }

  .nav-link:hover{
    transform:translateX(4px);
  }

  .nav-link[aria-current="page"]{
    border-left:3px solid var(--neon-green);
    background:rgba(138,43,226,.12);
  }

  .grid-2,
  .grid-3{
    grid-template-columns:1fr;
  }

  .site-footer__grid{
    grid-template-columns:1fr;
    padding-top:40px;
  }

  .site-footer__bottom{
    flex-direction:column;
    gap:8px;
  }

  .data-marquee{
    display:block;
  }
}

@media (max-width: 480px){
  .wordmark__text{
    font-size:1.2rem;
  }

  .stack-block{
    padding:24px 18px;
  }

  .btn{
    width:100%;
  }

  .site-footer__bottom{
    padding:16px;
  }
}

/* ===== 动效尊重 ===== */
@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration:0.001s !important;
    animation-iteration-count:1 !important;
    transition-duration:0.001s !important;
    scroll-behavior:auto !important;
  }

  .edge-data-track{
    display:none;
  }

  .data-marquee__content{
    animation:none;
    transform:none;
  }
}