:root{
  --ink-900:#0B1230;
  --ink-800:#131C46;
  --ink-700:#101838;
  --cyan:#38F2D8;
  --orange:#FF7A2F;
  --magenta:#FF3D8B;
  --white:#F4F6FF;
  --muted:#9AA6C9;
  --line:#26305C;
  --line-soft:rgba(38,48,92,.62);
  --score-bg:#0E1738;
  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --font-sans:"Inter","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --radius-s:6px;
  --radius-m:12px;
  --radius-l:18px;
  --shadow-soft:0 1px 0 rgba(255,255,255,.03),0 20px 44px -34px rgba(0,0,0,.95);
  --header-h:64px;
  --shell:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd,pre{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;-webkit-tap-highlight-color:transparent}
table{border-collapse:collapse}

body{
  min-height:100vh;
  background:
    radial-gradient(1080px 620px at 10% -12%,rgba(56,242,216,.10),transparent 62%),
    radial-gradient(920px 540px at 94% 2%,rgba(255,122,47,.09),transparent 60%),
    var(--ink-900);
  background-attachment:fixed;
  color:var(--white);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
@media (min-width:900px){
  body{font-size:17px;line-height:1.8}
}

h1,h2,h3,h4{line-height:1.2;font-weight:800;letter-spacing:-.008em}
strong{font-weight:700}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
#main-content{display:block}
#main-content:focus-visible{outline-offset:6px}

/* ---------- utilities ---------- */
.container{width:min(100% - 2.5rem,var(--shell));margin-inline:auto}
@media (max-width:600px){.container{width:calc(100% - 2rem)}}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(1rem,2vw,2rem)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}
@media (max-width:900px){
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:span 12}
}

.stack{display:grid;gap:clamp(1rem,2.4vw,1.75rem)}
.stack-sm{display:grid;gap:.6rem}
.hairline{border:0;height:1px;background:var(--line);margin:clamp(1.5rem,3vw,2.5rem) 0}

.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.num,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- editorial type ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);opacity:.7}
.display-title{font-family:var(--font-display);font-weight:600;font-size:clamp(2.35rem,6vw,3.9rem);line-height:1.08;letter-spacing:-.018em}
.section-title{font-size:clamp(1.4rem,3.1vw,2rem);font-weight:900;line-height:1.2;letter-spacing:-.012em}
.lede{font-family:var(--font-display);font-size:clamp(1.02rem,1.9vw,1.28rem);line-height:1.72;color:rgba(244,246,255,.86);max-width:54ch}
.annotation{font-size:.82rem;line-height:1.6;color:var(--muted)}

.prose{max-width:68ch;font-size:1rem;line-height:1.8;color:rgba(244,246,255,.86)}
.prose p+p{margin-top:1em}
.prose h2{font-size:1.32rem;margin:2.2em 0 .6em}
.prose h3{font-size:1.1rem;margin:1.7em 0 .5em}
.prose ul,.prose ol{margin:1em 0 0 1.15rem;list-style:disc}
.prose ol{list-style:decimal}
.prose li+li{margin-top:.4em}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose code{font-family:var(--font-mono);font-size:.9em;background:var(--ink-700);border:1px solid var(--line);border-radius:4px;padding:.1em .38em}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.2rem;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-sans);font-size:.9rem;font-weight:700;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--orange);border-color:var(--orange);color:#20100A;box-shadow:0 12px 32px -20px rgba(255,122,47,.95)}
.btn-primary:hover{background:#FF9155;border-color:#FF9155;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--white)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-sm{padding:.46rem .88rem;font-size:.79rem}

/* ---------- breadcrumb ---------- */
.breadcrumb{margin-bottom:clamp(1.1rem,2.5vw,1.75rem)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.breadcrumb-item{display:flex;align-items:center}
.breadcrumb-item+.breadcrumb-item::before{content:"/";margin-right:.45rem;color:#3A4577}
.breadcrumb-item a{color:var(--muted);text-decoration:none;transition:color .18s var(--ease)}
.breadcrumb-item a:hover{color:var(--cyan)}
.breadcrumb-current{color:var(--white)}

/* ---------- surfaces & panels ---------- */
.surface{background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-m);padding:clamp(1.1rem,2.4vw,1.75rem)}
.surface-alt{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-m);padding:clamp(1.1rem,2.4vw,1.75rem)}
.panel{border:1px solid var(--line);border-radius:var(--radius-m);background:var(--ink-700);overflow:hidden;box-shadow:var(--shadow-soft)}
.panel-head{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem;
  padding:.8rem 1.1rem;background:var(--score-bg);border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
}
.panel-body{padding:clamp(1rem,2.2vw,1.5rem)}

/* ---------- data components ---------- */
.table-scroll{width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-m);background:var(--ink-700);-webkit-overflow-scrolling:touch}
.data-table{width:100%;min-width:520px;font-size:.9rem}
.data-table th{
  padding:.75rem 1rem;text-align:left;white-space:nowrap;
  font-family:var(--font-mono);font-size:.7rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);background:var(--score-bg);border-bottom:1px solid var(--line);
}
.data-table td{padding:.78rem 1rem;border-bottom:1px solid var(--line-soft);color:rgba(244,246,255,.9)}
.data-table tbody tr:nth-child(even) td{background:rgba(19,28,70,.42)}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table td.num,.data-table th.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

.chip-row{display:flex;flex-wrap:wrap;gap:.5rem}
.chip{
  display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .85rem;border-radius:999px;
  border:1px solid var(--line);background:var(--ink-700);color:var(--muted);
  font-size:.82rem;font-weight:600;cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.chip:hover{color:var(--white);border-color:rgba(56,242,216,.5)}
.chip[aria-pressed="true"]{background:rgba(56,242,216,.13);border-color:var(--cyan);color:var(--cyan)}

.stat{display:grid;gap:.3rem;padding:1rem 1.1rem;border-left:2px solid var(--cyan);background:linear-gradient(90deg,rgba(56,242,216,.09),transparent 72%)}
.stat-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(1.5rem,3vw,1.95rem);font-weight:700;line-height:1;color:var(--white)}
.stat-label{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}

.tag{display:inline-flex;align-items:center;gap:.35rem;padding:.18rem .55rem;border-radius:5px;border:1px solid var(--line);background:var(--ink-700);color:var(--muted);font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase}
.tag-live{color:var(--magenta);border-color:rgba(255,61,139,.45);background:rgba(255,61,139,.1)}
.tag-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--magenta);animation:pulse 1.9s infinite var(--ease)}
.tag-member{color:var(--orange);border-color:rgba(255,122,47,.45);background:rgba(255,122,47,.1)}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}

/* ---------- media frames ---------- */
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--radius-m);border:1px solid var(--line);
  background:linear-gradient(140deg,var(--ink-800) 0%,var(--score-bg) 58%,#0A1030 100%);
  box-shadow:var(--shadow-soft);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 78% 10%,rgba(255,122,47,.22),transparent 58%),
             radial-gradient(circle at 12% 88%,rgba(56,242,216,.16),transparent 62%);
}
.media-frame img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media-frame--cover{aspect-ratio:16/9}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--portrait{aspect-ratio:4/5}
.media-caption{margin-top:.6rem;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.04em;color:var(--muted)}

/* ---------- index rail ---------- */
.index-rail{position:sticky;top:calc(var(--header-h) + 1.5rem);border-left:1px solid var(--line);padding-left:1.1rem}
.index-list{display:grid;gap:.1rem}
.index-link{display:grid;grid-template-columns:2.1rem 1fr;gap:.5rem;align-items:baseline;padding:.45rem 0;font-size:.86rem;color:var(--muted);text-decoration:none;transition:color .2s var(--ease),transform .2s var(--ease)}
.index-link .num{font-size:.72rem;color:rgba(154,166,201,.55);transition:color .2s var(--ease)}
.index-link:hover{color:var(--white);transform:translateX(2px)}
.index-link[aria-current="true"]{color:var(--cyan)}
.index-link[aria-current="true"] .num{color:var(--cyan)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease);transition-delay:var(--reveal-delay,0ms);will-change:opacity,transform}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;left:1rem;top:-120px;z-index:200;
  padding:.6rem 1.05rem;background:var(--cyan);color:#06231F;border-radius:0 0 10px 10px;
  font-weight:700;font-size:.85rem;text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(11,18,48,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none}
.scroll-progress-bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--orange));transition:width .1s linear}
.header-shell{
  width:min(100% - 2rem,var(--shell));margin-inline:auto;
  display:flex;align-items:center;gap:clamp(.75rem,2vw,1.5rem);
  height:var(--header-h);
}
.brand-lockup{display:inline-flex;align-items:center;gap:.62rem;flex:0 0 auto;margin-right:auto;text-decoration:none}
.brand-mark{
  position:relative;width:30px;height:30px;flex:0 0 auto;display:grid;place-items:center;
  border:1px solid rgba(56,242,216,.75);border-radius:9px;
  background:radial-gradient(circle at 30% 24%,rgba(56,242,216,.3),transparent 64%),var(--ink-700);
}
.brand-mark::before{content:"";width:12px;height:12px;border-radius:50%;border:1.5px solid var(--orange)}
.brand-mark-dot{position:absolute;right:5px;bottom:5px;width:5px;height:5px;border-radius:50%;background:var(--magenta);box-shadow:0 0 0 2px rgba(255,61,139,.18)}
.brand-text{display:grid;gap:1px}
.brand-name{font-size:.95rem;font-weight:900;letter-spacing:.03em;line-height:1.15;color:var(--white)}
.brand-sub{font-family:var(--font-mono);font-size:.63rem;letter-spacing:.08em;color:var(--muted);line-height:1.2}

.nav-toggle{
  display:none;align-items:center;gap:.5rem;margin-left:auto;
  padding:.5rem .8rem;border:1px solid var(--line);border-radius:999px;
  background:var(--ink-700);color:var(--white);font-size:.78rem;font-weight:700;letter-spacing:.06em;
}
.nav-toggle-text{line-height:1}
.nav-toggle-bars{display:grid;gap:4px;width:16px}
.nav-toggle-bar{display:block;height:1.5px;background:currentColor;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child{transform:translateY(2.75px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child{transform:translateY(-2.75px) rotate(-45deg)}

.command-nav{display:flex;align-items:center;gap:clamp(.75rem,2vw,1.25rem)}
.nav-list{display:flex;align-items:center;gap:.12rem}
.nav-item{display:block}
.nav-link{
  position:relative;display:inline-flex;align-items:baseline;gap:.38rem;
  padding:.5rem .64rem;border-radius:8px;
  font-size:.82rem;font-weight:600;color:var(--muted);text-decoration:none;white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--white);background:rgba(56,242,216,.07)}
.nav-index{font-family:var(--font-mono);font-size:.67rem;letter-spacing:.04em;color:#4A5690;transition:color .2s var(--ease)}
.nav-link:hover .nav-index{color:var(--cyan)}
.nav-link::after{
  content:"";position:absolute;left:.64rem;right:.64rem;bottom:.2rem;height:2px;border-radius:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;transition:transform .24s var(--ease);
}
.nav-link[aria-current="page"]{color:var(--white);background:rgba(56,242,216,.05)}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;top:.28rem;right:.3rem;width:5px;height:5px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(56,242,216,.9);
}
.nav-cta{flex:0 0 auto}

@media (max-width:1080px){
  :root{--header-h:58px}
  .header-shell{width:calc(100% - 1.5rem)}
  .nav-toggle{display:inline-flex}
  .brand-sub{display:none}
  .command-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    display:flex;flex-direction:column;align-items:stretch;gap:.85rem;
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
    padding:.6rem 1rem 1.2rem;
    background:var(--ink-800);border-bottom:1px solid var(--line);
    box-shadow:0 26px 52px -34px rgba(0,0,0,.96);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s linear;
  }
  .command-nav[data-open]{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    justify-content:flex-start;width:100%;padding:.82rem .3rem;border-radius:0;
    border-bottom:1px solid var(--line-soft);font-size:.95rem;
  }
  .nav-link:hover{background:transparent;color:var(--cyan)}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{background:rgba(56,242,216,.07)}
  .nav-link[aria-current="page"]::before{top:50%;right:.4rem;transform:translateY(-50%)}
  .nav-index{font-size:.75rem;min-width:1.9rem;display:inline-block}
  .nav-cta{width:100%}
}
@media (max-width:520px){
  .brand-mark{width:26px;height:26px}
  .brand-name{font-size:.88rem}
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:clamp(3rem,8vw,7rem);
  padding:clamp(2.5rem,5vw,4.5rem) 0 1.5rem;
  background:var(--ink-800);
  border-top:1px solid var(--line);
}
.footer-shell{width:min(100% - 2.5rem,var(--shell));margin-inline:auto}
@media (max-width:600px){.footer-shell{width:calc(100% - 2rem)}}

.footer-brand{padding-bottom:clamp(1.6rem,3.5vw,2.6rem);border-bottom:1px solid var(--line)}
.footer-brand-name{font-size:clamp(1.6rem,3.4vw,2.1rem);font-weight:900;letter-spacing:-.01em;line-height:1.1}
.footer-brand-line{margin-top:.55rem;font-family:var(--font-display);font-size:1rem;color:rgba(244,246,255,.78);max-width:46ch}
.footer-stamp{display:inline-flex;align-items:center;gap:.5rem;margin-top:.9rem;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.footer-stamp-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:pulse 2.1s infinite var(--ease)}

.footer-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(1.5rem,3vw,2.5rem);
  padding:clamp(1.8rem,4vw,2.8rem) 0 clamp(1.8rem,4vw,2.6rem);
}
.footer-col{min-width:0}
.footer-col-title{
  position:relative;padding-bottom:.6rem;margin-bottom:.85rem;
  font-family:var(--font-mono);font-size:.7rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
}
.footer-col-title::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--cyan);opacity:.85}
.footer-list{display:grid;gap:.55rem}
.footer-link{
  display:inline-block;font-size:.9rem;color:rgba(244,246,255,.78);text-decoration:none;
  border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover{color:var(--cyan);border-bottom-color:rgba(56,242,216,.5)}
.footer-link--strong{margin-top:1rem;font-weight:700;color:var(--white)}

.contact-list{display:grid;gap:.7rem}
.contact-item{display:grid;grid-template-columns:auto 1fr;gap:.6rem;align-items:baseline}
.contact-label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.contact-value{font-size:.88rem;color:var(--white);word-break:break-word}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem 1.5rem;
  padding-top:1.25rem;border-top:1px solid var(--line);
  font-size:.8rem;color:var(--muted);
}
.footer-copy{color:var(--muted)}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.25rem}
.legal-link{font-size:.8rem;color:var(--muted);text-decoration:none;border-bottom:1px dashed rgba(38,48,92,.95);transition:color .18s var(--ease),border-color .18s var(--ease)}
.legal-link:hover{color:var(--cyan);border-bottom-color:rgba(56,242,216,.6)}
.footer-note{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;color:var(--muted)}

@media (max-width:980px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr;gap:1.75rem}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .contact-item{grid-template-columns:1fr;gap:.15rem}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .reveal{opacity:1;transform:none}
  .scroll-progress-bar{transition:none}
}