*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;background:var(--bg-deep);color:var(--text-primary);font-family:var(--font-body);font-size:1rem;line-height:1.6;-webkit-font-smoothing:antialiased}
img,picture,video{display:block;max-width:100%}
ul,ol{list-style:none}
a{color:var(--accent-blue);text-decoration:none;transition:color .2s ease}
a:hover{color:#66f0ff}
button{font:inherit;border:none;background:none;cursor:pointer;color:inherit}
:focus-visible{outline:3px solid var(--accent-blue);outline-offset:3px;border-radius:2px}

:root{
  --bg-deep:#0a0e1a;
  --bg-panel:#121a2b;
  --text-primary:#f5f7fa;
  --text-secondary:#a0a8b8;
  --accent-blue:#00e5ff;
  --accent-orange:#ff6a00;
  --accent-green:#39ff14;
  --border-color:#253041;
  --gradient-accent:linear-gradient(135deg,#002bff,#00e5ff);
  --font-heading:Impact,'Arial Narrow Bold',sans-serif;
  --font-heading-cn:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --font-body:'Roboto','Helvetica Neue','PingFang SC',sans-serif;
  --header-width:280px;
  --content-max:1200px;
  --content-padding:2rem;
  --ease-out:cubic-bezier(.22,1,.36,1);
  --shadow-panel:0 4px 24px rgba(0,0,0,.4)
}

.skip-link{position:fixed;top:-100px;left:1rem;z-index:3000;padding:.75rem 1.5rem;background:var(--accent-blue);color:#0a0e1a;font-weight:700;font-size:.9rem;transition:top .2s ease}
.skip-link:focus{top:1rem}

.site-header{position:fixed;top:0;left:0;z-index:1000;width:var(--header-width);height:100vh;background:var(--bg-deep);border-right:1px solid var(--border-color);overflow-y:auto}
.header-inner{display:flex;flex-direction:column;height:100%;padding:2rem 1.25rem 1.5rem}
.brand{display:flex;align-items:center;gap:.75rem;padding-bottom:2rem;border-bottom:1px solid var(--border-color);margin-bottom:1.5rem;position:relative;overflow:hidden}
.brand-mark{display:grid;place-items:center;width:46px;height:46px;background:var(--gradient-accent);color:#fff;font-family:var(--font-heading);font-size:1.5rem;font-weight:900;clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);flex-shrink:0}
.brand-text{display:flex;flex-direction:column}
.brand-name{display:block;font-family:var(--font-heading-cn);font-size:1.3rem;font-weight:700;letter-spacing:.06em;color:var(--text-primary);line-height:1.2}
.brand-tagline{display:block;font-size:.72rem;color:var(--text-secondary);letter-spacing:.1em;margin-top:2px}
.brand::after{content:'';position:absolute;bottom:0;left:0;width:60%;height:3px;background:var(--gradient-accent);opacity:.5}

.nav-toggle{display:none}

.site-nav{flex:1;display:flex;flex-direction:column;padding-top:1rem}
.nav-list{display:flex;flex-direction:column;gap:.35rem;margin-bottom:auto}
.nav-link{position:relative;display:block;padding:.75rem 1rem;color:var(--text-secondary);font-family:var(--font-heading-cn);font-size:.95rem;font-weight:500;letter-spacing:.04em;transition:all .2s ease}
.nav-link::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);width:3px;height:60%;background:var(--accent-blue);transition:transform .2s ease}
.nav-link:hover{color:var(--text-primary);background:rgba(0,229,255,.06)}
.nav-link[aria-current="page"]{color:var(--accent-blue);background:rgba(0,229,255,.08)}
.nav-link[aria-current="page"]::before{transform:translateY(-50%) scaleY(1)}

.header-cta{display:block;padding:.9rem 1.5rem;background:var(--accent-orange);color:#0a0e1a;font-family:var(--font-heading-cn);font-size:.95rem;font-weight:700;text-align:center;letter-spacing:.08em;clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);transition:all .25s ease;margin-top:2rem}
.header-cta:hover{background:#ff8a3a;color:#0a0e1a;transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,106,0,.3)}

.scroll-progress{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,#002bff,#00e5ff);z-index:1500;width:100%;transform:scaleX(0);transform-origin:0 50%;pointer-events:none;box-shadow:0 0 12px rgba(0,229,255,.4)}
@media(min-width:1024px){.scroll-progress{left:var(--header-width);width:calc(100% - var(--header-width))}}

.back-top{position:fixed;right:2rem;bottom:2rem;z-index:999;width:50px;height:50px;display:grid;place-items:center;background:var(--bg-panel);border:1px solid var(--border-color);color:var(--text-primary);font-size:1.4rem;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(20px);transition:all .3s var(--ease-out);clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px)}
.back-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--accent-orange);color:#0a0e1a;border-color:var(--accent-orange);box-shadow:0 4px 16px rgba(255,106,0,.4)}

.main-content{min-height:70vh}
@media(max-width:1023px){.main-content{padding-top:64px}}
@media(min-width:1024px){.main-content,.site-footer{margin-left:var(--header-width)}}

.container{max-width:var(--content-max);margin:0 auto;padding:0 var(--content-padding)}
.section{padding:4rem 0}
.section-wide{padding:5.5rem 0}
.section-narrow{padding:2.5rem 0;max-width:760px;margin:0 auto}

.grid{display:grid;grid-template-columns:1fr;gap:1.5rem}
@media(min-width:768px){
  .grid{grid-template-columns:repeat(12,1fr)}
  .col-3{grid-column:span 3}
  .col-4{grid-column:span 4}
  .col-6{grid-column:span 6}
  .col-8{grid-column:span 8}
  .col-12{grid-column:1/-1}
}
[data-grid="auto"]{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.8rem 1.75rem;font-family:var(--font-heading-cn);font-size:.9rem;font-weight:700;letter-spacing:.04em;border:2px solid var(--border-color);background:var(--bg-panel);color:var(--text-primary);cursor:pointer;transition:all .25s ease;text-align:center;clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px)}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-panel);color:var(--text-primary)}
.btn-primary{background:var(--gradient-accent);border-color:transparent;color:#fff}
.btn-primary:hover{box-shadow:0 8px 24px rgba(0,229,255,.25);color:#fff}
.btn-accent{background:var(--accent-orange);color:#0a0e1a;border-color:transparent}
.btn-accent:hover{background:#ff8a3a;color:#0a0e1a;box-shadow:0 8px 20px rgba(255,106,0,.3)}
.btn-ghost{background:transparent;border-color:var(--accent-blue);color:var(--accent-blue)}
.btn-ghost:hover{background:rgba(0,229,255,.08);color:var(--accent-blue)}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;padding:1.5rem 0 .5rem;font-size:.85rem;color:var(--text-secondary)}
.breadcrumb a{color:var(--accent-blue)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb-sep{color:var(--text-secondary);opacity:.5}
.breadcrumb-current{color:var(--text-secondary)}

.data-card{background:var(--bg-panel);border:1px solid var(--border-color);padding:1.5rem;position:relative;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.data-card:hover{transform:translateY(-4px);border-color:rgba(0,229,255,.4);box-shadow:0 8px 28px rgba(0,0,0,.5)}
.data-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;background:var(--gradient-accent);opacity:.7}
.data-card-title{font-family:var(--font-heading-cn);font-size:.78rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.14em;margin-bottom:.75rem}
.data-card-value{font-family:var(--font-heading);font-size:2.5rem;line-height:1;color:var(--text-primary);font-weight:900}
.data-card-value.blue{color:var(--accent-blue)}
.data-card-value.orange{color:var(--accent-orange)}
.data-card-value.green{color:var(--accent-green)}
.data-card-label{font-size:.85rem;color:var(--text-secondary);margin-top:.5rem}
.data-card-status{display:inline-flex;align-items:center;gap:.4rem;font-size:.75rem;color:var(--text-secondary);margin-top:.75rem}
.data-card-status::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--accent-green);box-shadow:0 0 6px rgba(57,255,20,.5)}

.tabs{margin:1.5rem 0}
.tab-bar{display:flex;gap:.5rem;border-bottom:1px solid var(--border-color);margin-bottom:1.5rem;overflow-x:auto}
.tab-btn{padding:.75rem 1.25rem;background:transparent;border:none;border-bottom:2px solid transparent;color:var(--text-secondary);font-family:var(--font-heading-cn);font-weight:500;font-size:.9rem;white-space:nowrap;cursor:pointer;transition:all .2s ease}
.tab-btn:hover{color:var(--text-primary)}
.tab-btn[data-active="true"]{color:var(--accent-blue);border-bottom-color:var(--accent-blue)}
.tab-panel{display:none}
.tab-panel[data-active="true"]{display:block}

.timeline{position:relative;padding-left:1.5rem}
.timeline::before{content:'';position:absolute;left:5px;top:0;bottom:0;width:2px;background:var(--border-color)}
.timeline-item{position:relative;padding-left:1.5rem;padding-bottom:2rem}
.timeline-dot{position:absolute;left:-1.5rem;top:.4rem;width:12px;height:12px;border-radius:50%;background:var(--accent-blue);border:2px solid var(--bg-deep);box-shadow:0 0 10px rgba(0,229,255,.4)}
.timeline-title{font-family:var(--font-heading-cn);font-size:1.1rem;font-weight:700;color:var(--text-primary);margin-bottom:.25rem}
.timeline-date{font-size:.8rem;color:var(--accent-orange);letter-spacing:.06em;margin-bottom:.5rem}
.timeline-desc{color:var(--text-secondary);font-size:.9rem;line-height:1.6}

.media-frame{position:relative;display:block;background:linear-gradient(135deg,var(--bg-panel) 0%,#0e1524 100%);border:1px solid var(--border-color);border-radius:6px;overflow:hidden;aspect-ratio:16/9}
.media-frame::before{content:'IMAGE';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:var(--text-secondary);font-size:.75rem;letter-spacing:.3em;opacity:.5;z-index:1}
.media-frame::after{content:'';position:absolute;inset:0;background:linear-gradient(45deg,transparent 48%,rgba(0,229,255,.08) 49%,transparent 51%) 0 0/24px 24px;pointer-events:none;z-index:2}
.media-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:3}

.prose{color:var(--text-secondary);font-size:1rem;line-height:1.8}
.prose h1,.prose h2,.prose h3{color:var(--text-primary);font-family:var(--font-heading-cn);font-weight:700;line-height:1.3;margin-top:2.5rem;margin-bottom:1rem}
.prose p{margin-bottom:1.25rem}
.prose strong{color:var(--text-primary);font-weight:700}

.site-footer{background:var(--bg-panel);border-top:1px solid var(--border-color);padding:4rem 0 2rem}
.footer-inner{max-width:var(--content-max);margin:0 auto;padding:0 var(--content-padding)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.5fr;gap:3rem;margin-bottom:3rem}
.footer-brand{display:inline-block;margin-bottom:1rem;font-family:var(--font-heading);font-size:1.6rem;font-weight:900;color:var(--text-primary);letter-spacing:.03em}
.footer-brand:hover{color:var(--accent-blue)}
.footer-summary{color:var(--text-secondary);font-size:.9rem;line-height:1.7;max-width:340px}
.footer-trust{margin-top:1.5rem;padding:1rem 1.25rem;background:rgba(0,229,255,.06);border-left:3px solid var(--accent-blue);color:var(--text-secondary);font-size:.82rem;line-height:1.6;max-width:360px}
.footer-title{margin-bottom:1rem;font-family:var(--font-heading-cn);font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--accent-blue)}
.footer-links li,.footer-contact li{margin-bottom:.6rem}
.footer-links a,.footer-contact a{color:var(--text-secondary);font-size:.9rem}
.footer-links a:hover,.footer-contact a:hover{color:var(--accent-blue)}
.footer-contact{color:var(--text-secondary);font-size:.9rem;line-height:1.7}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:2rem;border-top:1px solid var(--border-color)}
.footer-copyright{color:var(--text-secondary);font-size:.85rem}
.footer-icp{color:var(--text-secondary);font-size:.85rem}

[data-reveal]{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
[data-reveal].revealed{opacity:1;transform:translateY(0)}

@media(max-width:1023px){
  .site-header{position:fixed;top:0;left:0;right:0;width:100%;height:64px;border-right:none;border-bottom:1px solid var(--border-color);overflow:visible}
  .header-inner{flex-direction:row;align-items:center;justify-content:space-between;height:100%;padding:0 1.25rem}
  .brand{padding:0;border:none;margin:0}
  .brand-mark{width:38px;height:38px;font-size:1.25rem}
  .brand-name{font-size:1.1rem}
  .brand-tagline{font-size:.65rem}
  .nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:8px;z-index:1002;background:transparent}
  .nav-toggle-bar{display:block;width:100%;height:2px;background:var(--text-primary);transition:all .3s ease}
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7px) 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(-7px) rotate(-45deg)}
  .site-nav{position:fixed;top:64px;left:0;bottom:0;width:84%;max-width:320px;padding:2rem 1.5rem;background:var(--bg-panel);border-right:1px solid var(--border-color);box-shadow:4px 0 24px rgba(0,0,0,.5);transform:translateX(-100%);transition:transform .35s var(--ease-out),visibility 0s linear .35s;z-index:1001;overflow-y:auto;visibility:hidden}
  .site-nav[data-open]{transform:translateX(0);visibility:visible;transition:transform .35s var(--ease-out),visibility 0s}
  .nav-list{margin-bottom:2rem}
  .header-cta{margin-top:1.5rem}
  body.nav-open::after{content:'';position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:999;backdrop-filter:blur(2px)}
  body.nav-open{overflow:hidden}
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
  .footer-brand-col{grid-column:1/-1}
  .back-top{right:1rem;bottom:1rem}
}

@media(min-width:1024px){
  body.nav-open{overflow:auto}
}

@media(max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .footer-bottom{flex-direction:column;gap:1rem;text-align:center}
  .section{padding:3rem 0}
  .section-wide{padding:4rem 0}
  .container{--content-padding:1.25rem}
  .back-top{width:44px;height:44px;font-size:1.2rem}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
  [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
  .back-top{transition:opacity .1s ease,visibility .1s ease,transform .1s ease}
}