:root{
  --bg-primary:#0A0E1A;
  --bg-secondary:#1A1F2E;
  --bg-tertiary:#0B0F1A;
  --border-color:#2A3440;
  --color-primary:#39FF14;
  --color-secondary:#00E5FF;
  --color-accent:#FF6B00;
  --text-primary:#FFFFFF;
  --text-muted:#A0A9B4;
  --primary-rgb:57,255,20;
  --secondary-rgb:0,229,255;
  --accent-rgb:255,107,0;
  --bg-primary-rgb:10,14,26;
}

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

html{
  scroll-behavior:smooth;
}

body{
  font-family:'Noto Sans SC','Microsoft YaHei',sans-serif;
  background-color:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.7;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.02) 1px,transparent 1px),
    radial-gradient(circle at 15% 10%,rgba(var(--primary-rgb),0.05) 0,transparent 35%),
    radial-gradient(circle at 85% 90%,rgba(var(--secondary-rgb),0.05) 0,transparent 35%);
  background-size:80px 80px,80px 80px,100% 100%,100% 100%;
  min-height:100vh;
}

:focus-visible{
  outline:3px solid var(--color-secondary);
  outline-offset:2px;
}

::selection{
  background:var(--color-primary);
  color:var(--bg-primary);
}

/* 容器 */
.container{
  width:100%;
  max-width:1280px;
  margin-inline:auto;
  padding-inline:1.25rem;
}

@media(min-width:768px){
  .container{
    padding-inline:2rem;
  }
}

/* 隐藏文本 */
.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;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0.55em 1.2em;
  border:1px solid transparent;
  border-radius:0;
  background:transparent;
  color:var(--text-primary);
  font-family:'Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:1rem;
  line-height:1.2;
  cursor:pointer;
  text-decoration:none;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}

.btn-primary{
  background:var(--color-primary);
  color:var(--bg-primary);
  font-weight:700;
  box-shadow:0 0 20px rgba(var(--primary-rgb),0.18);
}

.btn-outline{
  border-color:var(--color-secondary);
  color:var(--color-secondary);
  background:transparent;
}

.btn-lg{
  padding:0.75em 1.5em;
  font-size:1.1rem;
}

.btn-sm{
  padding:0.4em 0.9em;
  font-size:0.85rem;
}

.btn:hover{
  transform:translateY(-2px);
  box-shadow:0 4px 20px rgba(var(--primary-rgb),0.25);
}

.btn-outline:hover{
  background:rgba(var(--secondary-rgb),0.1);
  box-shadow:0 4px 20px rgba(var(--secondary-rgb),0.15);
}

/* 标签 */
.tag{
  display:inline-flex;
  align-items:center;
  padding:0.25em 0.7em;
  font-size:0.75rem;
  font-family:'Courier New',monospace;
  color:var(--color-secondary);
  border:1px solid var(--color-secondary);
  text-transform:uppercase;
  letter-spacing:0.1em;
  background:rgba(var(--secondary-rgb),0.08);
}

.tag-live{
  color:var(--color-primary);
  border-color:var(--color-primary);
  background:rgba(var(--primary-rgb),0.08);
}

.tag-accent{
  color:var(--color-accent);
  border-color:var(--color-accent);
  background:rgba(var(--accent-rgb),0.08);
}

/* 卡片 */
.card{
  background:var(--bg-secondary);
  border:1px solid var(--border-color);
  padding:1.5rem;
  position:relative;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}

.card::before{
  content:"";
  position:absolute;
  top:-1px;
  left:-1px;
  width:60px;
  height:3px;
  background:linear-gradient(90deg,var(--color-secondary),transparent);
}

.card:hover{
  transform:translateY(-4px);
  border-color:var(--color-secondary);
  box-shadow:0 8px 30px rgba(0,0,0,0.35);
}

.card-title{
  font-family:Impact,'Arial Black',sans-serif;
  font-size:1.2rem;
  margin-bottom:0.5rem;
}

.card-data{
  font-family:'Courier New',monospace;
  font-size:2rem;
  color:var(--color-primary);
  font-weight:700;
}

/* 网格 */
.grid{
  display:grid;
  gap:1.5rem;
}

.grid-2,
.grid-3,
.grid-4{
  grid-template-columns:1fr;
}

@media(min-width:768px){
  .grid-2{
    grid-template-columns:repeat(2,1fr);
  }

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

  .grid-4{
    grid-template-columns:repeat(2,1fr);
  }
}

@media(min-width:1024px){
  .grid-4{
    grid-template-columns:repeat(4,1fr);
  }
}

/* 媒体框 */
.media-frame{
  position:relative;
  aspect-ratio:16/10;
  background:
    linear-gradient(135deg,rgba(var(--primary-rgb),0.12),rgba(var(--secondary-rgb),0.1)),
    var(--bg-secondary);
  border:1px solid var(--border-color);
  overflow:hidden;
}

.media-frame::after{
  content:"PITCH";
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  color:var(--text-muted);
  font-family:'Courier New',monospace;
  font-size:0.8rem;
  letter-spacing:0.2em;
}

.media-frame img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
}

/* 正文 */
.prose{
  max-width:70ch;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4{
  font-family:Impact,'Arial Black',sans-serif;
  margin:1.5em 0 0.5em;
}

.prose p{
  margin-bottom:1em;
}

.prose ul,
.prose ol{
  margin:0 0 1em 1.5em;
}

.prose a{
  color:var(--color-secondary);
  text-decoration:underline;
}

/* 面包屑 */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0.5rem;
  font-size:0.95rem;
  color:var(--text-muted);
  padding:1rem 0;
}

.breadcrumb a{
  color:var(--color-secondary);
  text-decoration:none;
}

.breadcrumb a:hover{
  text-decoration:underline;
}

.breadcrumb [aria-current="page"]{
  color:var(--text-primary);
}

/* 表单 */
.form-field{
  margin-bottom:1.25rem;
}

.form-label{
  display:block;
  margin-bottom:0.35rem;
  color:var(--text-primary);
  font-size:0.9rem;
  font-weight:500;
}

.form-input{
  width:100%;
  padding:0.7em 0.9em;
  background:var(--bg-secondary);
  border:1px solid var(--border-color);
  color:var(--text-primary);
  font-family:inherit;
  font-size:1rem;
}

.form-input:focus{
  outline:none;
  border-color:var(--color-secondary);
  box-shadow:0 0 0 3px rgba(var(--secondary-rgb),0.15);
}

.form-error{
  color:var(--color-accent);
  font-size:0.85rem;
  margin-top:0.25rem;
}

/* 通用文本与标题 */
.section-title{
  font-family:Impact,'Arial Black',sans-serif;
  font-size:2.5rem;
  line-height:1.1;
  text-transform:uppercase;
  letter-spacing:0.02em;
}

.section-subtitle{
  color:var(--text-muted);
  font-size:1rem;
}

.text-muted{
  color:var(--text-muted);
}

.text-primary{
  color:var(--color-primary);
}

.text-secondary{
  color:var(--color-secondary);
}

.text-accent{
  color:var(--color-accent);
}

.data-text{
  font-family:'Courier New',monospace;
  letter-spacing:0.05em;
}

/* 头部 */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(var(--bg-primary-rgb),0.96);
  border-bottom:1px solid var(--border-color);
}

.site-header::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--color-primary),var(--color-secondary));
  z-index:2;
}

.site-header::after{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  width:60px;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,0.07),transparent);
  animation:header-sweep 7s ease-in-out infinite;
  pointer-events:none;
  z-index:0;
}

@keyframes header-sweep{
  0%{
    left:-20%;
  }

  100%{
    left:120%;
  }
}

.header-inner{
  display:flex;
  align-items:center;
  gap:1rem;
  min-height:64px;
  position:relative;
  z-index:1;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  color:var(--text-primary);
  text-decoration:none;
  font-family:Impact,'Arial Black',sans-serif;
  font-weight:700;
  font-size:1.2rem;
  letter-spacing:0.03em;
  white-space:nowrap;
}

.brand-mark{
  display:inline-grid;
  place-items:center;
  width:40px;
  height:40px;
  background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));
  color:var(--bg-primary);
  font-family:Impact,'Arial Black',sans-serif;
  font-size:1.6rem;
  transform:skewX(-6deg);
  box-shadow:0 0 12px rgba(var(--primary-rgb),0.25);
}

.brand-name{
  font-size:1.2rem;
  line-height:1.1;
}

.brand-region{
  display:block;
  font-family:'Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:0.65rem;
  color:var(--color-secondary);
  letter-spacing:0.3em;
}

.site-nav{
  flex:1;
  display:flex;
  justify-content:center;
}

.nav-list{
  list-style:none;
  display:flex;
  gap:0.2rem;
  margin:0;
  padding:0;
}

.nav-item{
  margin:0;
  padding:0;
  list-style:none;
}

.nav-link{
  display:block;
  padding:0.8rem 0.9rem;
  color:var(--text-muted);
  text-decoration:none;
  font-size:0.95rem;
  font-weight:500;
  border-bottom:2px solid transparent;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}

.nav-link:hover{
  color:var(--text-primary);
  border-bottom-color:var(--color-primary);
}

.nav-link[aria-current="page"]{
  color:var(--text-primary);
  border-bottom-color:var(--color-primary);
  background:linear-gradient(to top,rgba(var(--primary-rgb),0.12),transparent 60%);
}

.header-actions{
  display:flex;
  align-items:center;
  gap:0.8rem;
}

.live-tag{
  display:inline-flex;
  align-items:center;
  gap:0.4rem;
  padding:0.3rem 0.7rem;
  border:1px solid var(--color-primary);
  border-radius:999px;
  color:var(--color-primary);
  font-family:'Courier New',monospace;
  font-size:0.75rem;
  text-transform:uppercase;
  letter-spacing:0.15em;
}

.live-dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--color-primary);
  box-shadow:0 0 6px var(--color-primary);
  animation:live-pulse 1.6s ease-in-out infinite;
}

@keyframes live-pulse{
  0%,100%{
    opacity:1;
  }

  50%{
    opacity:0.3;
  }
}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid var(--border-color);
  background:var(--bg-secondary);
  color:var(--text-primary);
  cursor:pointer;
}

.nav-toggle-icon{
  display:block;
  width:22px;
  height:16px;
  position:relative;
}

.nav-toggle-icon span{
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  background:currentColor;
  transition:transform .2s ease,top .2s ease,opacity .2s ease;
}

.nav-toggle-icon span:nth-child(1){
  top:0;
}

.nav-toggle-icon span:nth-child(2){
  top:7px;
}

.nav-toggle-icon span:nth-child(3){
  top:14px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(1){
  top:7px;
  transform:rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(3){
  top:7px;
  transform:rotate(-45deg);
}

.header-progress{
  position:absolute;
  left:0;
  bottom:0;
  height:3px;
  width:0%;
  background:linear-gradient(90deg,var(--color-primary),var(--color-secondary));
  z-index:10;
}

/* 页脚 */
.site-footer{
  background:var(--bg-tertiary);
  border-top:1px solid var(--border-color);
  margin-top:4rem;
}

.footer-inner{
  display:grid;
  grid-template-columns:2fr 1fr 1.5fr;
  gap:2rem;
  padding-top:3rem;
  padding-bottom:3rem;
}

.footer-brand{
  display:flex;
  flex-direction:column;
  gap:0.5rem;
}

.footer-logo{
  font-family:Impact,'Arial Black',sans-serif;
  font-size:1.4rem;
  color:var(--text-primary);
  text-decoration:none;
}

.footer-tagline{
  color:var(--text-muted);
  font-size:0.9rem;
}

.footer-links{
  display:flex;
  flex-direction:column;
  gap:0.6rem;
}

.footer-link{
  color:var(--text-muted);
  text-decoration:none;
  transition:color .2s ease;
}

.footer-link:hover{
  color:var(--color-secondary);
}

.footer-contact{
  display:flex;
  flex-direction:column;
  gap:0.6rem;
  color:var(--text-muted);
  font-size:0.9rem;
}

.footer-email,
.footer-phone,
.footer-address{
  display:block;
}

.footer-meta{
  border-top:1px solid var(--border-color);
  padding-top:1rem;
  padding-bottom:1rem;
  font-size:0.85rem;
  color:var(--text-muted);
}

.footer-meta-inner{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:0.5rem;
}

.footer-icp{
  font-family:'Courier New',monospace;
}

/* 跳转链接 */
.skip-link{
  position:absolute;
  top:8px;
  left:8px;
  z-index:200;
  transform:translateY(-200%);
  background:var(--color-primary);
  color:var(--bg-primary);
  padding:0.6em 1em;
  text-decoration:none;
  font-weight:700;
  transition:transform .2s ease;
}

.skip-link:focus{
  transform:translateY(0);
}

/* 移动端响应式 */
@media(max-width:992px){
  .header-inner{
    flex-wrap:wrap;
    gap:0.75rem;
    padding-top:0.75rem;
    padding-bottom:0.75rem;
  }

  .site-nav{
    order:3;
    width:100%;
    display:none;
    flex-basis:100%;
  }

  .site-nav[data-open]{
    display:block;
  }

  .nav-list{
    flex-direction:column;
    border-top:1px solid var(--border-color);
    margin-top:0.75rem;
    gap:0;
  }

  .nav-link{
    padding:0.8rem 0.25rem;
    border-bottom:1px solid var(--border-color);
  }

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

  .header-actions{
    margin-left:auto;
  }

  .live-tag{
    display:none;
  }

  .btn-sm{
    padding:0.4em 0.8em;
  }

  .footer-inner{
    grid-template-columns:1fr;
    gap:1.5rem;
  }

  .section-title{
    font-size:2rem;
  }
}

/* 减少动态效果 */
@media(prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
    scroll-behavior:auto !important;
  }
}