:root{
  --color-primary:#0A192F;
  --color-accent:#39FF14;
  --color-secondary:#FF3333;
  --color-neutral-dark:#0B0F19;
  --color-neutral-light:#F0F4FA;
  --color-text:#FFFFFF;
  --color-text-dim:#C5D3E8;
  --color-border:#1B2A4A;
  --color-overlay:rgba(10,25,47,.88);
  --font-display:"Arial Black","PingFang SC Bold Italic","PingFang SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC",sans-serif;
  --font-mono:"JetBrains Mono","Courier New",monospace;
  --space-unit:8px;
  --space-1:calc(var(--space-unit)*1);
  --space-2:calc(var(--space-unit)*2);
  --space-3:calc(var(--space-unit)*3);
  --space-4:calc(var(--space-unit)*4);
  --space-5:calc(var(--space-unit)*5);
  --space-6:calc(var(--space-unit)*6);
  --space-8:calc(var(--space-unit)*8);
  --space-10:calc(var(--space-unit)*10);
  --space-12:calc(var(--space-unit)*12);
  --space-16:calc(var(--space-unit)*16);
  --container-wide:1440px;
  --container-narrow:1080px;
  --radius-cut:20px 4px 20px 4px;
  --radius-pill:999px;
  --shadow-elevated:0 12px 32px rgba(0,0,0,.45), 0 2px 8px rgba(0,0,0,.3);
  --shadow-glow:0 0 0 2px rgba(57,255,20,.25), 0 8px 30px rgba(57,255,20,.12);
  --focus-ring:0 0 0 3px rgba(57,255,20,.7);
  --transition-fast:140ms ease;
  --transition-base:220ms ease;
  --header-height:80px;
}

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

html{
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-height) + 24px);
}

body{
  background:var(--color-primary);
  color:var(--color-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}

img{display:block;max-width:100%;height:auto}
a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}
a:hover{color:#CCFFBB}
ul,ol{list-style:none}
button{font-family:var(--font-body);cursor:pointer}
input,select,textarea{font-family:var(--font-body)}

:focus-visible{
  outline:none;
  box-shadow:var(--focus-ring);
  border-radius:4px;
}

::selection{background:var(--color-accent);color:#0A192F}

.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;
}

.container-face{
  max-width:var(--container-wide);
  margin-left:auto;
  margin-right:auto;
  padding-left:var(--space-4);
  padding-right:var(--space-4);
  width:100%;
}

/* 等宽屏下标尺 */
.index-rule{
  display:flex;
  align-items:center;
  gap:var(--space-2);
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--color-text-dim);
  letter-spacing:.08em;
  padding-top:var(--space-2);
}

.index-rule::before{
  content:"";
  flex:1;
  height:1px;
  background:linear-gradient(90deg,var(--color-border),transparent);
}

/* 通用段标题 */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:var(--space-2);
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:.14em;
  color:var(--color-accent);
  text-transform:uppercase;
  background:rgba(57,255,20,.08);
  border:1px solid rgba(57,255,20,.3);
  border-radius:var(--radius-pill);
  padding:4px 16px;
}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--space-4);
  margin-bottom:var(--space-6);
}

.section-title{
  font-family:var(--font-display);
  font-style:italic;
  font-weight:900;
  font-size:clamp(28px,4vw,48px);
  line-height:1.1;
  letter-spacing:.01em;
  color:var(--color-text);
}

.section-title .line-spark{
  display:block;
  width:72px;
  height:6px;
  margin-top:var(--space-2);
  background:linear-gradient(90deg,var(--color-accent),transparent);
  clip-path:polygon(0 0,100% 45%,100% 100%,0 100%);
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:var(--space-2);
  font-family:var(--font-body);
  font-weight:700;
  font-size:15px;
  line-height:1;
  padding:14px 28px;
  border-radius:var(--radius-pill);
  border:2px solid transparent;
  transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);
  letter-spacing:.03em;
}

.btn-solid{
  background:var(--color-accent);
  color:#0A192F;
  border-color:var(--color-accent);
}

.btn-solid:hover{
  background:#66FF4D;
  border-color:#66FF4D;
  color:#0A192F;
  box-shadow:0 0 24px rgba(57,255,20,.4);
  transform:translateY(-2px);
}

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

.btn-outline:hover{
  background:rgba(57,255,20,.12);
  color:#fff;
  border-color:#66FF4D;
}

.btn-compact{padding:10px 22px;font-size:14px}

/* ========== Header ========== */
.bsp-header{
  position:sticky;
  top:0;
  z-index:180;
  background:var(--color-overlay);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--color-border);
  transition:box-shadow var(--transition-base);
}

.bsp-header.scrolled{
  box-shadow:var(--shadow-elevated);
}

.header-rail{
  display:flex;
  align-items:center;
  gap:var(--space-4);
  min-height:var(--header-height);
  position:relative;
}

.skip-link{
  position:fixed;
  top:-64px;
  left:16px;
  z-index:300;
  background:var(--color-accent);
  color:#0A192F;
  font-weight:700;
  padding:8px 20px;
  border-radius:0 0 12px 12px;
  transition:top var(--transition-fast);
}

.skip-link:focus-visible{
  top:0;
}

.brand-lockup{
  display:inline-flex;
  align-items:center;
  gap:var(--space-2);
  white-space:nowrap;
}

.brand-name{
  font-family:var(--font-display);
  font-style:italic;
  font-weight:900;
  font-size:24px;
  letter-spacing:.02em;
  color:#fff;
  transition:color var(--transition-fast);
}

.brand-lockup:hover .brand-name{color:var(--color-accent)}

.speedline-mark{
  display:inline-flex;
  align-items:center;
}

.speedline-mark svg{
  width:72px;
  height:20px;
  display:block;
  overflow:visible;
}

.speedline-mark .line-a{stroke:var(--color-accent);stroke-width:3;stroke-linecap:round}
.speedline-mark .line-b{stroke:var(--color-border);stroke-width:3;stroke-linecap:round}
.speedline-mark .line-c{stroke:var(--color-secondary);stroke-width:3;stroke-linecap:round}

.timing-capsule{
  margin-left:var(--space-3);
  background:rgba(11,15,25,.65);
  border:1px solid var(--color-border);
  border-radius:var(--radius-pill);
  padding:4px 8px;
  flex:1;
  display:flex;
  justify-content:center;
}

.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  list-style:none;
}

.nav-list a{
  display:block;
  font-size:15px;
  font-weight:500;
  color:var(--color-text-dim);
  padding:8px 16px;
  border-radius:var(--radius-pill);
  transition:background var(--transition-fast),color var(--transition-fast);
}

.nav-list a:hover{
  color:#fff;
  background:rgba(57,255,20,.12);
}

.nav-list a[aria-current="page"]{
  color:var(--color-accent);
  background:rgba(57,255,20,.1);
  box-shadow:inset 0 0 0 1px rgba(57,255,20,.25);
  font-weight:700;
}

.quick-actions{
  display:flex;
  align-items:center;
  gap:var(--space-3);
  margin-left:auto;
}

.search-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;
  height:32px;
  color:var(--color-text-dim);
  transition:color var(--transition-fast),transform var(--transition-fast);
  cursor:default;
}

.search-icon svg{
  width:19px;
  height:19px;
  fill:none;
  stroke:currentColor;
  stroke-width:2;
  stroke-linecap:round;
}

.search-icon:hover{
  color:var(--color-accent);
  transform:scale(1.08);
}

.nav-toggle{
  display:none;
  background:transparent;
  border:1px solid var(--color-border);
  border-radius:12px;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  color:#fff;
}

.burger-box{
  display:flex;
  flex-direction:column;
  gap:5px;
  width:22px;
}

.burger-box i{
  display:block;
  height:2px;
  background:currentColor;
  border-radius:2px;
  transition:transform var(--transition-fast),opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .burger-box i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .burger-box i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .burger-box i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-nav{
  display:none;
  background:var(--color-neutral-dark);
  border-top:1px solid var(--color-border);
  padding:var(--space-4) 0 var(--space-5);
}

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

.mobile-nav ul{
  display:flex;
  flex-direction:column;
  gap:2px;
}

.mobile-nav a{
  display:block;
  padding:12px var(--space-4);
  color:var(--color-text-dim);
  font-size:17px;
  border-left:3px solid transparent;
}

.mobile-nav a:hover{
  background:rgba(57,255,20,.06);
  color:#fff;
  border-left-color:var(--color-accent);
}

.mobile-nav a[aria-current="page"]{
  color:var(--color-accent);
  border-left-color:var(--color-accent);
  font-weight:700;
  background:rgba(57,255,20,.08);
}

.mobile-nav-foot{
  display:flex;
  gap:var(--space-3);
  padding:var(--space-4) var(--space-4) 0;
  margin-top:var(--space-3);
  border-top:1px solid var(--color-border);
}

/* ========== Footer ========== */
.bsp-footer{
  background:var(--color-neutral-dark);
  border-top:4px solid var(--color-accent);
  margin-top:var(--space-12);
  position:relative;
}

.bsp-footer::before{
  content:"";
  position:absolute;
  top:-4px;
  left:0;
  width:40%;
  height:4px;
  background:linear-gradient(90deg,var(--color-accent),transparent);
  pointer-events:none;
}

.footer-grid{
  display:grid;
  grid-template-columns:1.3fr 0.8fr 1fr;
  gap:var(--space-8);
  padding-top:var(--space-10);
  padding-bottom:var(--space-8);
}

.brand-lockup-footer{
  margin-bottom:var(--space-4);
}

.footer-brief{
  color:var(--color-text-dim);
  font-size:14px;
  line-height:1.8;
  max-width:420px;
  margin-bottom:var(--space-4);
}

.footer-icp{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--color-accent);
  border:1px solid rgba(57,255,20,.3);
  background:rgba(57,255,20,.06);
  padding:4px 14px;
  border-radius:var(--radius-pill);
}

.footer-heading{
  font-family:var(--font-display);
  font-style:italic;
  font-weight:800;
  font-size:18px;
  color:var(--color-text);
  margin-bottom:var(--space-4);
  display:flex;
  align-items:center;
  gap:var(--space-2);
}

.footer-heading::before{
  content:"";
  display:inline-block;
  width:18px;
  height:3px;
  background:var(--color-accent);
}

.footer-index ul{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:6px 20px;
}

.footer-index a{
  font-size:14px;
  color:var(--color-text-dim);
  padding:4px 0;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color var(--transition-fast),transform var(--transition-fast);
}

.footer-index a::before{
  content:"/";
  font-family:var(--font-mono);
  color:var(--color-accent);
  opacity:.7;
}

.footer-index a:hover{
  color:#fff;
  transform:translateX(3px);
}

.contact-list li{
  font-size:14px;
  color:var(--color-text-dim);
  padding:5px 0;
  line-height:1.6;
}

.contact-list a{
  color:var(--color-accent);
  word-break:break-all;
}

.contact-list a:hover{
  color:#fff;
  text-decoration:underline;
}

.footer-bottomline{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:var(--space-2);
  padding-top:var(--space-4);
  padding-bottom:var(--space-4);
  border-top:1px solid var(--color-border);
  font-size:13px;
  color:var(--color-text-dim);
}

.footer-slogan{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:rgba(57,255,20,.75);
}

/* ========== 面板与卡片 ========== */
.panel-cut{
  background:var(--color-primary);
  border:1px solid var(--color-border);
  border-radius:var(--radius-cut);
  padding:var(--space-5);
  position:relative;
  transition:box-shadow var(--transition-base),transform var(--transition-base),border-color var(--transition-base);
}

.panel-cut:hover{
  box-shadow:var(--shadow-elevated);
  transform:translateY(-3px);
  border-color:rgba(57,255,20,.4);
}

.panel-cut::after{
  content:"";
  position:absolute;
  bottom:0;
  right:0;
  width:32px;
  height:4px;
  background:var(--color-accent);
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%);
  opacity:.8;
}

.panel-glow{
  box-shadow:0 0 0 1px rgba(57,255,20,.15),0 8px 32px rgba(57,255,20,.08);
}

.panel-cut .data-index{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--color-accent);
  letter-spacing:.1em;
}

/* 网格 */
.track-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--space-4);
}

.telemetry-card{
  background:var(--color-primary);
  border:1px solid var(--color-border);
  border-radius:var(--radius-cut);
  padding:var(--space-4);
  display:flex;
  flex-direction:column;
  gap:var(--space-2);
  transition:border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);
}

.telemetry-card:hover{
  border-color:var(--color-accent);
  box-shadow:0 6px 24px rgba(0,0,0,.35);
  transform:translateY(-3px);
}

.telemetry-card .data-index{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--color-accent);
  letter-spacing:.12em;
}

.telemetry-card .card-title{
  font-family:var(--font-display);
  font-style:italic;
  font-weight:800;
  font-size:18px;
  color:#fff;
}

.telemetry-card .card-meta{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--color-text-dim);
  border-top:1px solid var(--color-border);
  padding-top:var(--space-2);
  margin-top:auto;
}

/* 图片容器基础 */
.img-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius-cut);
  background:var(--color-neutral-dark);
  border:1px solid var(--color-border);
}

.img-frame > img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform var(--transition-base),opacity var(--transition-base);
  opacity:.92;
}

.img-frame:hover > img{
  transform:scale(1.03);
  opacity:1;
}

.img-frame::after{
  content:"";
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  height:36%;
  background:linear-gradient(180deg,transparent,rgba(10,25,47,.65));
  pointer-events:none;
}

.img-frame-ratio-16x9{aspect-ratio:16/9}
.img-frame-ratio-4x3{aspect-ratio:4/3}
.img-frame-ratio-1x1{aspect-ratio:1/1}

.img-frame-cover::before{
  content:"";
  position:absolute;
  inset:10px;
  border:1px solid rgba(57,255,20,.6);
  border-radius:12px 2px 12px 2px;
  clip-path:polygon(0 0,100% 0,85% 100%,0 100%);
  pointer-events:none;
  z-index:2;
}

/* 角标标签 */
.pill-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--color-secondary);
  color:#fff;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  padding:3px 10px;
  border-radius:var(--radius-pill);
  line-height:1.4;
}

.pill-tag::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:#fff;
  animation:pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot{
  0%,100%{opacity:1}
  50%{opacity:.4}
}

/* 内容引用面板 */
.echo-panel{
  background:var(--color-neutral-light);
  color:var(--color-primary);
  border-left:6px solid var(--color-accent);
  border-radius:0 20px 20px 0;
  padding:var(--space-5) var(--space-6);
  font-size:17px;
  font-weight:500;
  line-height:1.8;
}

.echo-panel .mono-note{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--color-border);
  display:block;
  margin-top:var(--space-2);
}

/* 跑马灯 */
.ticker-bar{
  overflow:hidden;
  border-top:1px solid var(--color-border);
  border-bottom:1px solid var(--color-border);
  background:var(--color-neutral-dark);
  padding:10px 0;
  white-space:nowrap;
}

.ticker-bar .ticker-track{
  display:inline-block;
  min-width:100%;
}

.ticker-bar .ticker-track span{
  display:inline-block;
  padding-right:40px;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--color-text-dim);
  letter-spacing:.06em;
}

.ticker-bar[data-ticker]{
  animation:ticker-scroll 30s linear infinite;
}

@keyframes ticker-scroll{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}

/* 分屏基础布局，供页面级组合使用 */
.split-stage{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:var(--space-8);
  align-items:center;
  padding:var(--space-10) 0;
}

.stage-narrative{
  padding-right:var(--space-4);
}

.stage-visual{
  position:relative;
}

/* 滚动进度条 */
.bsp-header .progress-track{
  position:absolute;
  left:0;
  bottom:-1px;
  height:3px;
  width:100%;
  pointer-events:none;
}

.bsp-header .progress-fill{
  width:0%;
  height:100%;
  background:linear-gradient(90deg,var(--color-accent),var(--color-secondary));
  transition:width 160ms ease-out;
}

/* 滚动显现 */
[data-reveal]{
  opacity:0;
  transform:translateY(18px) scale(.985);
  transition:opacity .6s cubic-bezier(.22,1,.36,1),transform .6s cubic-bezier(.22,1,.36,1);
  will-change:opacity,transform;
}

[data-reveal="up"]{transform:translateY(24px)}
[data-reveal="fade"]{transform:none}
[data-reveal="left"]{transform:translateX(-28px)}
[data-reveal="right"]{transform:translateX(28px)}

[data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* 页面通用切换动效基础 */
.page-transition-wrap{
  animation:page-in 480ms ease both;
}

@keyframes page-in{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:none}
}

/* ========== 响应式 ========== */
@media (max-width:1180px){
  .timing-capsule{
    margin-left:0;
  }

  .nav-list a{
    padding:8px 12px;
    font-size:14px;
  }

  .quick-actions .btn-compact{
    padding:10px 16px;
  }

  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:var(--space-6);
  }

  .footer-insight{
    grid-column:1/-1;
    padding-bottom:var(--space-2);
  }
}

@media (max-width:992px){
  .timing-capsule{
    display:none;
  }

  .quick-actions .search-icon{
    display:none;
  }

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

  .header-rail{
    justify-content:space-between;
  }

  .quick-actions{
    margin-left:0;
  }

  .footer-grid{
    grid-template-columns:1fr;
    gap:var(--space-6);
  }

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

  .split-stage{
    grid-template-columns:1fr;
    gap:var(--space-6);
  }

  .stage-narrative{
    padding-right:0;
  }
}

@media (max-width:640px){
  :root{
    --header-height:70px;
  }

  .container-face{
    padding-left:var(--space-3);
    padding-right:var(--space-3);
  }

  .brand-name{
    font-size:20px;
  }

  .speedline-mark svg{
    width:56px;
  }

  .quick-actions .btn-compact{
    padding:8px 14px;
    font-size:13px;
  }

  .track-grid{
    grid-template-columns:1fr;
  }

  .footer-bottomline{
    flex-direction:column;
  }

  .section-title{
    font-size:26px;
  }

  .panel-cut{
    padding:var(--space-4);
  }
}

/* ========== 动效偏好 ========== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }

  [data-reveal]{
    opacity:1;
    transform:none;
  }

  .ticker-bar[data-ticker]{
    animation:none;
    white-space:normal;
  }
}

/* ========== 底部浮动能量条（全站视觉点缀） ========== */
.footer-energy{
  position:relative;
  height:6px;
  background:var(--color-border);
  overflow:hidden;
}

.footer-energy::after{
  content:"";
  position:absolute;
  top:0;
  left:0;
  height:100%;
  width:28%;
  background:linear-gradient(90deg,var(--color-accent),var(--color-secondary));
  clip-path:polygon(0 0,100% 0,85% 100%,0 100%);
  animation:energy-slide 6s ease-in-out infinite alternate;
}

@keyframes energy-slide{
  0%{transform:translateX(0)}
  100%{transform:translateX(340%)}
}

/* ========== 状态与通用辅助 ========== */
.status-live::before{
  content:"●";
  color:var(--color-accent);
  margin-right:6px;
  font-size:12px;
  animation:pulse-dot 1.6s ease-in-out infinite;
}

.status-offline::before{
  content:"●";
  color:var(--color-secondary);
  margin-right:6px;
  font-size:12px;
}

.divider-slant{
  height:1px;
  background:linear-gradient(90deg,var(--color-border),transparent);
  border:0;
  margin:var(--space-6) 0;
}

.mono-meta{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--color-text-dim);
  letter-spacing:.06em;
}

/* 页面底部回到顶部（由页面可调用） */
.back-top{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:150;
  width:48px;
  height:48px;
  display:none;
  align-items:center;
  justify-content:center;
  background:var(--color-accent);
  color:#0A192F;
  border-radius:14px 4px 14px 4px;
  font-size:22px;
  line-height:1;
  box-shadow:0 6px 20px rgba(57,255,20,.3);
  transition:opacity var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);
}

.back-top.is-show{display:flex}
.back-top:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(57,255,20,.4)}
.back-top svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round}
.back-top:focus-visible{outline:none;box-shadow:0 0 0 3px #fff}