:root{
  --c-bg:#0A1F44;
  --c-bg-deep:#060F2B;
  --c-bg-card:#F7F9FC;
  --c-bg-card-deep:#0E234D;
  --c-primary:#FF6B35;
  --c-mint:#39FF14;
  --c-text:#E8ECF5;
  --c-text-dim:#9AA7BD;
  --c-line:#1E3A6E;
  --c-line-light:#2A4A85;
  --grad-bg:linear-gradient(135deg,#0A1F44 0%,#1E3A6E 100%);
  --grad-orange:linear-gradient(135deg,rgba(255,107,53,0.4),rgba(255,107,53,0.08));
  --grad-card:linear-gradient(145deg,#F7F9FC 0%,#E8ECF5 100%);
  --font-display:"Impact","Arial Black","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular","Consolas",monospace;
  --radius-lg:28px;
  --radius-md:16px;
  --radius-pill:999px;
  --shadow-card:0 16px 40px rgba(0,0,0,0.25);
  --shadow-orange:0 10px 30px rgba(255,107,53,0.25);
  --max-w:1280px;
  --header-h:120px;
  --transition:0.25s cubic-bezier(0.2,0.8,0.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--grad-bg);
  color:var(--c-text);
  line-height:1.75;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
ul,ol{list-style:none}
input,textarea{font-family:inherit}
.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;
}
.skip-link{
  position:fixed;
  top:-60px;
  left:20px;
  z-index:10000;
  background:var(--c-primary);
  color:#0A1F44;
  font-weight:700;
  padding:12px 24px;
  border-radius:0 0 var(--radius-md) var(--radius-md);
  transition:top 0.25s ease;
}
.skip-link:focus{
  top:0;
}
:focus-visible{
  outline:3px solid var(--c-mint);
  outline-offset:3px;
  border-radius:4px;
}
::selection{
  background:var(--c-primary);
  color:var(--c-bg);
}
.container{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 24px;
}
.progress-bar{
  position:fixed;
  top:0;
  left:0;
  height:4px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-mint));
  width:0%;
  z-index:10001;
  transition:width 0.1s linear;
  border-radius:0 4px 4px 0;
}
/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(10,31,68,0.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
}
.site-header__inner{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 24px;
}
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:14px 0 10px;
  border-bottom:1px solid rgba(30,58,110,0.6);
}
.text-logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-display);
  font-size:24px;
  letter-spacing:1px;
  color:#fff;
  flex-shrink:0;
}
.text-logo--footer{
  color:#fff;
}
.text-logo__icon{
  position:relative;
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),#FF2E00);
  box-shadow:0 0 18px rgba(255,107,53,0.5);
  flex-shrink:0;
}
.text-logo__icon::before{
  content:"";
  position:absolute;
  left:8px;
  top:6px;
  width:3px;
  height:22px;
  background:var(--c-bg);
  border-radius:2px;
}
.text-logo__icon::after{
  content:"";
  position:absolute;
  right:8px;
  bottom:6px;
  width:14px;
  height:3px;
  background:var(--c-mint);
  border-radius:2px;
  box-shadow:0 0 10px var(--c-mint);
}
.topbar__meta{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.lang-tip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--c-text-dim);
  background:rgba(30,58,110,0.45);
  border:1px solid var(--c-line);
  padding:6px 14px;
  border-radius:var(--radius-pill);
  white-space:nowrap;
}
.status-dot{
  display:inline-block;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-mint);
  box-shadow:0 0 8px var(--c-mint);
  flex-shrink:0;
}
.status-dot--mint{
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:0.55;transform:scale(0.8)}
}
.search-mini{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(6,15,43,0.6);
  border:1px solid var(--c-line);
  border-radius:var(--radius-pill);
  padding:6px 16px;
  transition:border-color 0.3s ease, box-shadow 0.3s ease;
}
.search-mini:focus-within{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(255,107,53,0.2);
}
.search-mini__icon{
  position:relative;
  width:14px;
  height:14px;
  border:2px solid var(--c-text-dim);
  border-radius:50%;
  flex-shrink:0;
}
.search-mini__icon::after{
  content:"";
  position:absolute;
  right:-5px;
  bottom:-3px;
  width:6px;
  height:2px;
  background:var(--c-text-dim);
  transform:rotate(45deg);
}
.search-mini__input{
  background:transparent;
  border:none;
  color:var(--c-text);
  font-size:13px;
  width:160px;
  outline:none;
  font-family:var(--font-mono);
}
.search-mini__input::placeholder{
  color:var(--c-text-dim);
}
.site-nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:10px 0;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:wrap;
}
.nav-list__link{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:600;
  color:var(--c-text-dim);
  padding:10px 18px;
  border-radius:var(--radius-pill);
  transition:background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
  white-space:nowrap;
}
.nav-list__link:hover{
  color:var(--c-primary);
  background:rgba(255,107,53,0.08);
}
.nav-list__link[aria-current="page"]{
  color:var(--c-bg);
  background:var(--c-primary);
  box-shadow:0 6px 20px rgba(255,107,53,0.35);
}
.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  border-radius:14px;
  background:rgba(30,58,110,0.6);
  border:1px solid var(--c-line);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  transition:background 0.25s ease, border-color 0.25s ease;
}
.nav-toggle:hover{
  border-color:var(--c-primary);
}
.nav-toggle[aria-expanded="true"]{
  background:var(--c-primary);
  border-color:var(--c-primary);
}
.nav-toggle__bar{
  width:22px;
  height:2px;
  background:var(--c-text);
  border-radius:2px;
  transition:transform 0.25s ease, opacity 0.25s ease, background 0.25s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){
  transform:translateY(8px) 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(-8px) rotate(-45deg);
}
.data-ticker{
  overflow:hidden;
  border-top:1px solid rgba(30,58,110,0.5);
  border-bottom:1px solid rgba(30,58,110,0.5);
  background:rgba(6,15,43,0.5);
  padding:8px 0;
}
.data-ticker__track{
  display:flex;
  gap:48px;
  width:max-content;
  animation:ticker 38s linear infinite;
}
.data-ticker__item{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--c-text-dim);
  white-space:nowrap;
  letter-spacing:0.5px;
}
.data-ticker__item::before{
  content:"//";
  margin-right:12px;
  color:var(--c-primary);
}
@keyframes ticker{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}
/* ===== Footer ===== */
.site-footer{
  position:relative;
  background:var(--c-bg-deep);
  border-top:none;
  margin-top:80px;
}
.site-footer__slant{
  height:6px;
  background:linear-gradient(90deg,var(--c-primary) 0%,transparent 90%);
  opacity:0.9;
}
.site-footer__inner{
  max-width:var(--max-w);
  margin:0 auto;
  padding:48px 24px 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1.2fr 1fr;
  gap:40px;
  border-bottom:1px solid var(--c-line);
  padding-bottom:40px;
}
.footer-brand__desc{
  margin-top:16px;
  font-size:14px;
  color:var(--c-text-dim);
  max-width:280px;
}
.footer-brand__note{
  margin-top:12px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--c-mint);
}
.footer-heading{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  color:var(--c-text);
  margin-bottom:16px;
  letter-spacing:0.5px;
}
.footer-heading__dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 10px var(--c-primary);
}
.footer-link-list li{
  margin-bottom:10px;
}
.footer-link-list a{
  font-size:13px;
  color:var(--c-text-dim);
  transition:color 0.2s ease, padding-left 0.2s ease;
}
.footer-link-list a:hover{
  color:var(--c-primary);
  padding-left:6px;
}
.footer-contact{
  margin-top:16px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.footer-contact__line{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--c-text-dim);
}
.footer-meta{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-meta__row{
  display:flex;
  font-size:13px;
  border-bottom:1px dashed var(--c-line);
  padding-bottom:6px;
}
.footer-meta__label{
  width:64px;
  color:var(--c-text-dim);
  font-family:var(--font-mono);
  font-size:12px;
}
.footer-meta__value{
  color:var(--c-text);
  font-family:var(--font-mono);
  font-size:13px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:20px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--c-text-dim);
  flex-wrap:wrap;
}
.footer-bottom__links{
  display:flex;
  gap:12px;
  align-items:center;
}
.footer-bottom__links a{
  color:var(--c-text-dim);
  transition:color 0.2s ease;
}
.footer-bottom__links a:hover{
  color:var(--c-primary);
}
/* ===== Common components ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
  padding:14px 32px;
  border-radius:var(--radius-pill);
  transition:transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  border:2px solid transparent;
}
.btn:hover{
  transform:translateY(-2px);
}
.btn--primary{
  background:var(--c-primary);
  color:var(--c-bg);
  box-shadow:var(--shadow-orange);
}
.btn--primary:hover{
  background:#FF8A5C;
  box-shadow:0 12px 32px rgba(255,107,53,0.4);
}
.btn--ghost{
  background:transparent;
  border-color:var(--c-mint);
  color:var(--c-mint);
}
.btn--ghost:hover{
  background:rgba(57,255,20,0.08);
  box-shadow:0 8px 24px rgba(57,255,20,0.15);
}
.card{
  background:var(--grad-card);
  border-radius:var(--radius-lg);
  padding:28px;
  color:var(--c-bg);
  box-shadow:var(--shadow-card);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:rgba(30,58,110,0.12);
  color:var(--c-bg);
  border:1px solid rgba(30,58,110,0.2);
}
.is-live .tag{
  background:rgba(57,255,20,0.12);
  border-color:rgba(57,255,20,0.3);
}
.divider{
  height:2px;
  background:linear-gradient(90deg,var(--c-primary),transparent);
  border:none;
  margin:24px 0;
}
.section-head{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:28px;
}
.section-head__index{
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
  color:var(--c-primary);
}
.section-head__title{
  font-family:var(--font-display);
  font-size:28px;
  letter-spacing:1px;
  color:var(--c-text);
}
.section-head__line{
  flex:1;
  height:1px;
  background:linear-gradient(90deg,var(--c-line-light),transparent);
}
.page-hero{
  min-height:320px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:60px 0 40px;
  position:relative;
}
.page-hero__title{
  font-family:var(--font-display);
  font-size:56px;
  line-height:1.1;
  letter-spacing:1px;
}
.page-hero__title em{
  font-style:normal;
  color:var(--c-primary);
}
.page-hero__legend{
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--c-text-dim);
  max-width:560px;
}
/* ===== Image placeholder base ===== */
.img-frame{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:linear-gradient(135deg,rgba(30,58,110,0.6),rgba(6,15,43,0.9));
  border:1px solid var(--c-line);
}
.img-frame::before{
  content:attr(data-caption);
  position:absolute;
  left:16px;
  bottom:12px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--c-text-dim);
  background:rgba(10,31,68,0.7);
  padding:4px 12px;
  border-radius:var(--radius-pill);
  max-width:calc(100% - 32px);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  pointer-events:none;
}
.img-frame::after{
  content:"";
  display:block;
  padding-bottom:56.25%;
}
/* ===== To top ===== */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:52px;
  height:52px;
  border-radius:16px;
  background:var(--c-primary);
  color:var(--c-bg);
  border:none;
  box-shadow:0 10px 30px rgba(255,107,53,0.4);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  z-index:900;
  opacity:0;
  pointer-events:none;
  transform:translateY(20px);
  transition:opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
}
.to-top.is-visible{
  opacity:1;
  pointer-events:auto;
  transform:translateY(0);
}
.to-top:hover{
  background:#FF8A5C;
}
.to-top:focus-visible{
  outline:3px solid var(--c-mint);
  outline-offset:3px;
}
/* ===== Responsive ===== */
@media(max-width: 1024px){
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
  .topbar{
    flex-wrap:wrap;
  }
  .search-mini__input{
    width:130px;
  }
}
@media(max-width: 768px){
  :root{
    --header-h:auto;
  }
  .site-header__inner{
    padding:0 16px;
  }
  .topbar{
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    padding-top:12px;
  }
  .topbar__meta{
    justify-content:space-between;
  }
  .lang-tip{
    font-size:11px;
    padding:4px 10px;
  }
  .search-mini__input{
    width:130px;
  }
  .site-nav-wrap{
    flex-wrap:wrap;
  }
  .nav-toggle{
    display:flex;
    margin-left:auto;
  }
  .site-nav{
    width:100%;
    max-height:0;
    overflow:hidden;
    transition:max-height 0.4s ease, padding 0.3s ease;
    padding:0;
  }
  .site-nav[data-open]{
    max-height:520px;
    padding-top:12px;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }
  .nav-list__link{
    display:block;
    text-align:left;
    padding:12px 16px;
    border-radius:12px;
  }
  .data-ticker{
    display:none;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:28px;
    padding-bottom:32px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
  .page-hero__title{
    font-size:36px;
  }
  .footer-brand__desc{
    max-width:none;
  }
}
@media(max-width: 480px){
  .topbar__meta{
    flex-direction:column;
    align-items:stretch;
  }
  .search-mini{
    width:100%;
  }
  .search-mini__input{
    flex:1;
  }
  .footer-bottom__links{
    flex-wrap:wrap;
    justify-content:center;
  }
}
/* ===== Reduced motion ===== */
@media(prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration:0.001s !important;
    animation-iteration-count:1 !important;
    transition-duration:0.001s !important;
  }
  html{
    scroll-behavior:auto;
  }
  .progress-bar{
    transition:width 0.01s linear;
  }
  .data-ticker__track{
    animation:none;
  }
}