*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
:root{
  --bg-deep:#0A0C10;
  --bg-panel:#121624;
  --text:#F5F7FA;
  --muted:#9AA4B2;
  --neon:#8B5CF6;
  --blue:#00E5FF;
  --orange:#FF6B35;
  --violet:#3B2D5E;
  --border:#2A2E3A;
  --green:#22C55E;
  --yellow:#FACC15;
  --font-head:"Noto Sans SC","PingFang SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",monospace;
  --header-w:276px;
  --radius:14px;
  --shadow:8px 8px 0 rgba(0,0,0,.32);
  --neon-glow:0 0 22px rgba(139,92,246,.45);
  --blue-glow:0 0 18px rgba(0,229,255,.35);
}
body{
  margin:0;
  padding-left:var(--header-w);
  background:
    radial-gradient(circle at 18% 6%, rgba(139,92,246,.16), transparent 30rem),
    radial-gradient(circle at 78% 88%, rgba(0,229,255,.11), transparent 28rem),
    radial-gradient(circle at 95% 5%, rgba(255,107,53,.08), transparent 22rem),
    var(--bg-deep);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--blue)}
a:hover{color:var(--neon)}
h1,h2,h3,h4{font-family:var(--font-head)}
::selection{background:var(--neon);color:#fff}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}
#main-content{display:block}
#main-content:focus-visible{outline:3px solid var(--blue);outline-offset:-6px;border-radius:0}

.skip-link{
  position:fixed;top:0;left:0;z-index:2400;
  transform:translateY(-120%);
  background:var(--neon);color:#fff;
  padding:10px 18px;border-radius:0 0 12px 0;
  font-weight:700;text-decoration:none;
  box-shadow:var(--neon-glow);
}
.skip-link:focus-visible{transform:translateY(0)}
.scroll-progress{
  position:fixed;top:0;left:0;z-index:2200;
  width:0;height:4px;pointer-events:none;
  background:linear-gradient(90deg,var(--neon),var(--blue) 55%,var(--orange));
  box-shadow:0 0 12px rgba(0,229,255,.45);
}

.site-header{
  position:fixed;top:0;left:0;bottom:0;width:var(--header-w);
  z-index:1800;padding:22px 18px 18px;
  background:linear-gradient(180deg,rgba(10,12,16,.97),rgba(18,22,36,.94));
  border-right:2px solid var(--border);
  box-shadow:12px 0 30px rgba(0,0,0,.35);
}
.site-header::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 0% 100%,rgba(59,45,94,.5),transparent 44%);
}
.site-header-inner{
  position:relative;z-index:1;height:100%;
  display:flex;flex-direction:column;gap:20px;
}
.site-header-brand{display:flex}
.brand{display:flex;align-items:flex-start;gap:10px;text-decoration:none;color:var(--text)}
.brand-mark{
  width:48px;height:48px;flex:0 0 48px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--neon),var(--blue));
  color:#fff;font-family:var(--font-mono);font-size:1.2rem;font-weight:500;
  letter-spacing:-.04em;box-shadow:0 0 22px rgba(139,92,246,.42),4px 4px 0 rgba(0,0,0,.3);
  transform:rotate(-4deg);
}
.brand-copy{display:flex;flex-direction:column;gap:2px}
.brand-name{
  font-family:var(--font-head);font-weight:900;font-size:1.02rem;
  line-height:1.35;letter-spacing:.02em;color:var(--text);
}
.brand-meta{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.brand-version,.brand-live{
  font-family:var(--font-mono);font-size:10px;padding:1px 7px;
  border-radius:999px;letter-spacing:.06em;border:1px solid var(--border);
}
.brand-version{color:var(--muted)}
.brand-live{color:var(--green);border-color:rgba(34,197,94,.35);display:inline-flex;align-items:center;gap:5px}
.live-dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green)}
.nav-toggle{display:none}

.site-nav{margin-top:8px}
.nav-list{list-style:none;display:flex;flex-direction:column;gap:4px}
.nav-item{margin:0}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:10px 12px 10px 14px;border-left:3px solid transparent;
  color:var(--muted);text-decoration:none;font-weight:500;font-size:.95rem;letter-spacing:.04em;
  border-radius:0 8px 8px 0;transition:background .2s,color .25s,border-color .2s,transform .25s;
}
.nav-link:hover,.nav-link[aria-current="page"]{color:var(--text);transform:translateX(4px)}
.nav-link:hover{border-left-color:var(--neon);background:linear-gradient(90deg,rgba(139,92,246,.14),transparent)}
.nav-link[aria-current="page"]{
  border-left-color:var(--blue);
  background:linear-gradient(90deg,rgba(0,229,255,.12),transparent);
  box-shadow:inset 0 0 20px rgba(0,229,255,.04);
}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;right:8px;width:6px;height:6px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 10px var(--blue);
}
.nav-caption{
  margin-top:18px;padding-left:14px;color:var(--muted);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;line-height:1.5;
}
.header-status{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--border);
  color:var(--muted);font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
}
.status-label{color:var(--blue)}
.status-state{display:inline-flex;align-items:center;gap:6px;color:var(--green)}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}

.site-footer{
  background:linear-gradient(180deg,rgba(10,12,16,.6),var(--bg-deep) 38%);
  border-top:2px solid var(--border);
  position:relative;margin-top:clamp(56px,10vw,120px);
  padding:clamp(32px,5vw,64px) clamp(20px,4vw,56px) 26px;
}
.footer-stage{
  max-width:1160px;margin:0 auto;
  display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr) minmax(0,1fr);
  gap:clamp(20px,4vw,40px) 32px;
}
.brand-footer .brand-mark{width:42px;height:42px;flex-basis:42px;font-size:1rem}
.footer-trust{
  margin-top:18px;color:var(--muted);border-left:2px solid var(--neon);
  padding-left:12px;font-size:.95rem;
}
.footer-heading{
  font-size:.82rem;font-family:var(--font-mono);letter-spacing:.14em;
  text-transform:uppercase;color:var(--blue);margin-bottom:12px;font-weight:500;
}
.footer-contact-block,.footer-link-block{display:flex;flex-direction:column;gap:6px}
.footer-line{color:var(--muted);font-size:.9rem}
.footer-address{font-style:normal}
.footer-link{color:var(--text);text-decoration:none;font-size:.92rem;padding:4px 0;transition:color .2s,padding-left .2s}
.footer-link:hover{color:var(--blue);padding-left:6px}
.footer-bottom{
  grid-column:1/-1;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  border-top:1px solid var(--border);padding-top:16px;margin-top:28px;
  color:var(--muted);font-size:.82rem;
}
.footer-copy,.footer-icp{margin:0}
.footer-icp{padding:2px 10px;border:1px solid var(--border);border-radius:999px}

.page-shell{width:100%;max-width:1280px;margin:0 auto;padding:clamp(24px,5vw,64px) clamp(20px,4vw,48px) 40px}
.section{position:relative;padding:clamp(32px,6vw,72px) 0}
.section + .section{border-top:1px solid var(--border)}
.section-kicker{
  font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.14em;
  font-size:.78rem;color:var(--blue);display:flex;align-items:center;gap:10px;margin-bottom:10px;
}
.section-kicker::before{content:"";width:28px;height:2px;background:var(--neon)}
.section-title{
  font-size:clamp(1.6rem,3.6vw,2.8rem);line-height:1.2;font-family:var(--font-head);
  font-weight:900;letter-spacing:-.02em;margin-bottom:16px;
}
.section-lede{color:var(--muted);max-width:62ch;margin-bottom:24px;font-size:1rem}
.gradient-title{
  background:linear-gradient(110deg,var(--neon),var(--blue) 60%,rgba(0,229,255,.9));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.chapter{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr);gap:clamp(12px,2vw,24px)}
.chapter-index{
  font-family:var(--font-mono);font-weight:500;font-size:clamp(2.2rem,5vw,4.2rem);
  line-height:1;color:var(--neon);opacity:.42;letter-spacing:-.04em;min-width:7ch;
}
.chapter-body{min-width:0}
.annotation{
  writing-mode:vertical-rl;font-family:var(--font-mono);font-size:.68rem;
  letter-spacing:.22em;text-transform:uppercase;color:var(--muted);display:inline-block;
}
.annotation-accent{color:var(--blue)}
.chop-label{
  display:inline-block;background:var(--neon);color:#fff;font-family:var(--font-mono);
  font-size:.68rem;letter-spacing:.1em;padding:4px 10px;transform:skewX(-10deg);
  box-shadow:3px 3px 0 rgba(0,0,0,.3);
}

.stack{display:grid;gap:22px}
.panel{
  position:relative;padding:clamp(20px,3vw,32px);
  background:linear-gradient(145deg,rgba(18,22,36,.96),rgba(18,22,36,.82));
  border:2px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.3;
  background:radial-gradient(circle at 85% 0%,rgba(139,92,246,.22),transparent 55%);
}
.panel-headed{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.panel-title{font-size:1.1rem;font-weight:900;font-family:var(--font-head)}
.research-board{display:grid;gap:18px}
.research-panel{
  position:relative;display:grid;grid-template-columns:120px minmax(0,1fr);gap:12px 20px;
  padding:20px;border:1px solid var(--border);border-left:4px solid var(--neon);
  background:linear-gradient(140deg,rgba(59,45,94,.14),var(--bg-panel) 42%);
  border-radius:10px;box-shadow:6px 6px 0 rgba(0,0,0,.25);transition:transform .2s,border-color .2s;
}
.research-panel:hover{transform:translateY(-3px);border-color:var(--neon)}
.research-index{font-family:var(--font-mono);font-size:2.2rem;line-height:1;color:var(--blue)}
.research-title{font-weight:900;font-family:var(--font-head);margin:2px 0 4px}
.research-type{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.research-abstract{grid-column:1/-1;color:var(--muted);border-left:2px solid var(--neon);padding-left:12px}
.evidence-list{grid-column:1/-1;list-style:none;display:grid;gap:8px;margin-top:2px}
.evidence-list li{display:flex;gap:9px;font-size:.92rem;color:var(--text)}
.evidence-list li::before{content:"▚";color:var(--blue);font-size:.8rem;margin-top:5px}
.term-cloud{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:7px}
.term-tag{
  border:1px solid var(--border);border-radius:999px;padding:2px 10px;
  color:var(--muted);font-size:.75rem;transition:color .2s,border-color .2s;
}
.term-tag:hover{color:var(--blue);border-color:var(--blue)}
.read-more{
  grid-column:1/-1;justify-self:start;color:var(--blue);text-decoration:none;font-weight:700;
  font-size:.88rem;display:inline-flex;align-items:center;gap:4px;transition:gap .2s,color .2s;
}
.read-more:hover{gap:10px;color:var(--neon)}

.grid{display:grid;gap:clamp(16px,3vw,28px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}

.media-frame{
  position:relative;border:2px solid var(--border);border-radius:var(--radius);
  background:
    linear-gradient(135deg,rgba(59,45,94,.3),rgba(18,22,36,.8)),
    repeating-linear-gradient(45deg,rgba(255,255,255,.02) 0 1px,transparent 1px 8px);
  aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;overflow:hidden;
}
.media-frame::after{
  content:attr(data-label);font-family:var(--font-mono);font-size:.78rem;letter-spacing:.12em;
  color:var(--text);border:1px dashed var(--border);padding:8px 12px;border-radius:6px;
  background:rgba(10,12,16,.7);
}
.media-frame[data-accent="blue"]{border-color:rgba(0,229,255,.4);box-shadow:inset 0 0 22px rgba(0,229,255,.08)}
.media-frame[data-accent="orange"]{border-color:rgba(255,107,53,.4);box-shadow:inset 0 0 22px rgba(255,107,53,.08)}

.video-shell{border:2px solid var(--border);background:rgba(5,7,11,.9);border-radius:16px;overflow:hidden;box-shadow:0 20px 40px rgba(0,0,0,.4)}
.video-shell-topbar{display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border);background:var(--bg-panel);padding:10px 14px}
.video-shell-dot{width:10px;height:10px;border-radius:50%;background:var(--orange)}
.video-shell-dot:nth-child(2){background:var(--yellow)}
.video-shell-dot:nth-child(3){background:var(--green)}
.video-shell-stage{
  aspect-ratio:16/9;display:grid;place-items:center;position:relative;
  background:
    radial-gradient(circle at 20% 30%,rgba(139,92,246,.28),transparent 44%),
    radial-gradient(circle at 75% 65%,rgba(0,229,255,.18),transparent 38%),
    repeating-linear-gradient(120deg,rgba(255,255,255,.03) 0 2px,transparent 2px 10px);
}
.video-shell-cta{
  font-family:var(--font-mono);color:var(--blue);letter-spacing:.18em;
  border:1px solid rgba(0,229,255,.4);padding:8px 14px;border-radius:999px;font-size:.78rem;
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--neon);color:#fff;border:0;min-height:44px;padding:10px 18px;
  border-radius:999px;font-weight:700;text-decoration:none;cursor:pointer;
  box-shadow:0 4px 0 rgba(0,0,0,.4);transition:background .2s,color .2s,transform .2s,box-shadow .2s;
}
.btn:hover{background:var(--blue);color:#0A0C10;transform:translateY(-2px)}
.btn-ghost{background:transparent;border:2px solid var(--border);color:var(--text);box-shadow:none}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);background:rgba(0,229,255,.06)}
.btn-live{background:rgba(255,107,53,.16);border:1px solid var(--orange);color:var(--orange);box-shadow:inset 0 0 12px rgba(255,107,53,.1)}
.btn-live:hover{background:var(--orange);color:#0A0C10;border-color:var(--orange)}

.tag{
  display:inline-flex;align-items:center;border:1px solid var(--border);background:rgba(18,22,36,.8);
  padding:2px 10px;border-radius:999px;color:var(--muted);font-family:var(--font-mono);font-size:12px;text-transform:uppercase;
}
.tag-blue{border-color:rgba(0,229,255,.4);color:var(--blue)}
.tag-orange{border-color:rgba(255,107,53,.4);color:var(--orange)}
.tag-green{border-color:rgba(34,197,94,.4);color:var(--green)}

.notice-bar{
  display:flex;align-items:flex-start;gap:10px;border:1px solid rgba(250,204,21,.35);
  background:rgba(250,204,21,.06);border-radius:10px;padding:12px 14px;
  color:var(--yellow);font-size:.88rem;
}
.notice-bar::before{content:"▲";font-size:.9rem;margin-top:3px}

.breadcrumbs{display:flex;flex-wrap:wrap;gap:4px 8px;list-style:none;padding:0;margin:0 0 22px;font-size:.85rem;color:var(--muted)}
.breadcrumbs li{display:flex;align-items:center;gap:4px}
.breadcrumbs li + li::before{content:"/";color:var(--border);margin-right:4px}
.breadcrumbs a{color:var(--blue);text-decoration:none}
.breadcrumbs a[aria-current="page"]{color:var(--muted);pointer-events:none}

[data-tabs]{
  display:inline-grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:4px;padding:5px;
  background:var(--bg-panel);border:1px solid var(--border);border-radius:999px;
  max-width:100%;overflow-x:auto;
}
[data-tabs] [role="tab"]{
  border:0;background:transparent;border-radius:999px;padding:8px 18px;white-space:nowrap;
  color:var(--muted);font-weight:700;cursor:pointer;font-family:var(--font-body);
}
[data-tabs] [role="tab"][aria-selected="true"],
[data-tabs] [role="tab"][data-active]{background:var(--neon);color:#fff;box-shadow:var(--neon-glow)}

details.collapse{border:1px solid var(--border);border-radius:10px;background:var(--bg-panel)}
details.collapse summary{
  padding:12px 14px;cursor:pointer;font-weight:700;list-style:none;
  display:flex;justify-content:space-between;gap:10px;transition:color .2s;
}
details.collapse summary::-webkit-details-marker{display:none}
details.collapse summary::after{content:"＋";color:var(--blue)}
details.collapse[open] summary{color:var(--blue);border-bottom:1px solid var(--border)}
details.collapse[open] summary::after{content:"－"}
details.collapse .collapse-body{padding:14px;color:var(--muted)}

html.js [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
html.js .is-revealed{opacity:1;transform:none}

@media (min-width:901px) and (max-width:1180px){
  :root{--header-w:232px}
  .brand-name{font-size:.92rem}
  .research-panel{grid-template-columns:1fr;gap:8px}
  .research-index{font-size:1.6rem}
  .footer-stage{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:900px){
  body{padding-left:0}
  :root{--header-w:0px}
  .site-header{
    position:sticky;top:0;width:100%;height:auto;padding:10px 14px;
    border-right:0;border-bottom:2px solid var(--border);
    background:rgba(10,12,16,.96);backdrop-filter:blur(12px);
  }
  .site-header-inner{
    display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;
    gap:8px 12px;height:auto;
  }
  .site-header-brand{grid-column:1;grid-row:1}
  .nav-toggle{
    grid-column:2;grid-row:1;display:flex;align-items:center;justify-content:center;gap:8px;
    min-height:42px;padding:0 10px;background:transparent;border:1px solid var(--border);
    border-radius:12px;color:var(--text);font-family:var(--font-body);font-size:.82rem;cursor:pointer;
  }
  .nav-toggle-box{width:18px;height:14px;position:relative;display:block}
  .nav-toggle-line{
    position:absolute;left:0;width:100%;height:2px;background:var(--text);
    border-radius:2px;transition:transform .25s,opacity .25s,top .25s;
  }
  .nav-toggle-line:nth-child(1){top:0}
  .nav-toggle-line:nth-child(2){top:6px}
  .nav-toggle-line:nth-child(3){top:12px}
  .nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1){top:6px;transform:rotate(45deg)}
  .nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3){top:6px;transform:rotate(-45deg)}
  .nav-toggle[aria-expanded="true"]{border-color:var(--neon);box-shadow:var(--neon-glow)}
  .site-nav{
    grid-column:1/-1;grid-row:2;margin:0;position:relative;top:auto;left:auto;right:auto;
    transform:none;opacity:1;max-height:0;overflow:hidden;
    transition:max-height .3s ease,border-color .2s,padding .2s;
    padding:0;border:0;background:transparent;
  }
  .site-nav[data-open]{
    max-height:calc(100vh - 90px);overflow:auto;
    border-top:1px solid var(--border);padding-top:10px;
  }
  .nav-list{gap:2px}
  .nav-link{border-left:0;border-top:1px solid rgba(42,46,58,.6);border-radius:0}
  .nav-link:hover,.nav-link[aria-current="page"]{transform:none;padding-left:14px}
  .header-status{display:none}
  .nav-caption{margin-top:10px;padding-bottom:4px}
  .footer-stage{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .footer-bottom{grid-column:1/-1}
  .chapter{grid-template-columns:1fr}
  .chapter-index{min-width:0}
  .research-panel{grid-template-columns:1fr;gap:8px}
  .research-index{font-size:1.6rem}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:760px){
  .grid-2,.grid-3{grid-template-columns:minmax(0,1fr)}
  .footer-stage{grid-template-columns:1fr}
  .footer-brand,.footer-contact-block,.footer-link-block{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .nav-toggle-label{display:none}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html.js [data-reveal],html.js .is-revealed{opacity:1!important;transform:none!important;transition:none!important}
  .nav-link:hover,.research-panel:hover,.read-more:hover{transform:none}
  .scroll-progress{transition:none}
}