*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-deep:#0B0D12;--bg-card:#151A22;--text-hi:#F5F7FA;--text-lo:#A0AAB5;
  --accent-blue:#2E7CF6;--accent-cyan:#00E5FF;--accent-orange:#FF7A00;--accent-lime:#C0FF00;
  --font-head:'Oswald',Impact,'Arial Narrow',sans-serif;
  --font-body:-apple-system,'PingFang SC','Microsoft YaHei','Noto Sans CJK SC',sans-serif;
  --font-data:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
  --content-max:1440px;--header-h:72px;--radius:14px;--radius-pill:999px;
  --border-thin:1px solid rgba(255,255,255,0.08);
  --shadow-card:0 8px 28px rgba(0,0,0,0.35);
  --space-1:8px;--space-2:16px;--space-3:24px;--space-4:32px;
  --space-5:48px;--space-6:64px;--space-7:96px;--space-8:128px
}
html{scroll-behavior:smooth}
body{
  background:var(--bg-deep);color:var(--text-hi);font-family:var(--font-body);
  font-size:16px;line-height:1.7;padding-top:calc(var(--header-h) + var(--space-3));
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility
}
img,video,svg{display:block;max-width:100%;height:auto}
a{color:var(--accent-blue);text-decoration-thickness:1px;text-underline-offset:3px}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul,ol{list-style:none}
::selection{background:var(--accent-blue);color:#fff}
:focus-visible{outline:2px solid var(--accent-cyan);outline-offset:3px;border-radius:4px}
.container{max-width:var(--content-max);margin:0 auto;padding-left:var(--space-3);padding-right:var(--space-3)}
#main-content{scroll-margin-top:calc(var(--header-h) + var(--space-3))}
.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:-80px;left:var(--space-3);z-index:2000;padding:10px 24px;background:var(--accent-blue);color:#fff;border-radius:var(--radius-pill);font-size:14px;font-weight:600;text-decoration:none;transition:top 0.25s ease}
.skip-link:focus-visible{top:var(--space-2)}
.scroll-progress{position:fixed;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--accent-blue),var(--accent-cyan));transform:scaleX(0);transform-origin:0 50%;z-index:1200;pointer-events:none}
.site-header{position:fixed;top:var(--space-2);left:0;right:0;z-index:1000;padding:0 var(--space-3);pointer-events:none}
.header-inner{position:relative;max-width:var(--content-max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);background:rgba(11,13,18,0.72);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,0.10);border-radius:var(--radius-pill);padding:6px 20px 6px 6px;box-shadow:0 10px 36px rgba(0,0,0,0.35);transition:background 0.3s ease,border-color 0.3s ease;pointer-events:auto}
.site-header.is-scrolled .header-inner{background:rgba(11,13,18,0.94);border-color:rgba(255,255,255,0.16)}
.brand-pill{display:inline-flex;align-items:center;gap:10px;background:linear-gradient(135deg,var(--accent-blue),#1B4F9E);border-radius:var(--radius-pill);color:#fff;padding:5px 22px 5px 5px;text-decoration:none;font-family:var(--font-head);font-weight:700;text-transform:uppercase;letter-spacing:0.05em;box-shadow:0 4px 16px rgba(46,124,246,0.30);transition:transform 0.2s ease,box-shadow 0.2s ease;flex-shrink:0}
.brand-pill:hover{color:#fff;transform:translateY(-1px);box-shadow:0 6px 24px rgba(46,124,246,0.48)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,0.18);font-family:var(--font-data);font-weight:700;font-size:18px;line-height:1}
.brand-name{font-size:16px;line-height:1.2;letter-spacing:0.06em;white-space:nowrap}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-list a{display:inline-block;padding:8px 16px;color:var(--text-lo);text-decoration:none;font-size:14px;font-weight:500;border-radius:var(--radius-pill);transition:color 0.2s ease,background 0.2s ease;white-space:nowrap}
.nav-list a:hover,.nav-list a:focus-visible{color:var(--text-hi);background:rgba(255,255,255,0.07)}
.nav-list a[aria-current="page"]{color:var(--accent-cyan);background:rgba(0,229,255,0.10)}
.nav-toggle{display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;border-radius:50%;border:var(--border-thin);background:rgba(255,255,255,0.04);transition:background 0.2s ease,border-color 0.2s ease;flex-shrink:0}
.nav-toggle:hover{background:rgba(255,255,255,0.09);border-color:rgba(255,255,255,0.18)}
.toggle-bar{display:block;width:18px;height:2px;background:var(--text-hi);border-radius:2px;transition:transform 0.3s ease,opacity 0.3s ease}
.site-footer{margin-top:var(--space-7);background:#090B0F;border-top:var(--border-thin);position:relative}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(46,124,246,0.6),rgba(0,229,255,0.5),transparent)}
.footer-inner{max-width:var(--content-max);margin:0 auto;padding:var(--space-6) var(--space-3) 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:var(--space-5);padding-bottom:var(--space-5)}
.footer-brand .brand-pill{margin-bottom:var(--space-3)}
.footer-trust{color:var(--text-lo);font-size:14px;line-height:1.8;margin-bottom:var(--space-3);max-width:520px}
.footer-contact{color:var(--text-lo);font-size:13px;line-height:1.6;margin-bottom:4px}
.footer-address{color:var(--text-lo);font-size:13px;line-height:1.6}
.footer-title{font-family:var(--font-head);font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:0.12em;color:var(--text-hi);padding-bottom:var(--space-1);margin-bottom:var(--space-2);border-bottom:var(--border-thin)}
.footer-links ul,.footer-legal ul{display:grid;gap:4px}
.footer-links a,.footer-legal a{display:inline-block;padding:4px 0;color:var(--text-lo);text-decoration:none;font-size:14px;transition:color 0.2s ease,padding-left 0.2s ease}
.footer-links a:hover,.footer-legal a:hover{color:var(--accent-cyan);padding-left:4px}
.footer-bottom{border-top:var(--border-thin);padding:var(--space-3) 0;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:6px 12px;font-size:13px;color:var(--text-lo)}
.footer-bottom a{color:var(--text-lo);text-decoration:none;transition:color 0.2s ease}
.footer-bottom a:hover{color:var(--text-hi)}
.footer-sep{color:rgba(255,255,255,0.14);user-select:none}
.back-top{position:fixed;right:var(--space-4);bottom:var(--space-4);width:48px;height:48px;border-radius:50%;background:var(--accent-blue);border:1px solid rgba(255,255,255,0.2);box-shadow:0 8px 24px rgba(46,124,246,0.35);color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity 0.3s ease,transform 0.3s ease,visibility 0.3s,background 0.2s ease;z-index:900}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--accent-cyan);color:var(--bg-deep)}
.back-top-icon{font-size:20px;line-height:1}
.page-hero{padding:var(--space-5) 0 var(--space-6);position:relative}
.page-title{font-family:var(--font-head);font-size:clamp(2rem,5vw,3.4rem);font-weight:700;text-transform:uppercase;line-height:1.08;letter-spacing:0.02em;color:var(--text-hi);margin-bottom:var(--space-2)}
.page-description{color:var(--text-lo);font-size:16px;line-height:1.8;max-width:680px}
.section{position:relative;padding:var(--space-7) 0}
.section-index{display:flex;align-items:center;gap:12px;font-family:var(--font-data);font-size:13px;font-weight:700;letter-spacing:0.1em;color:var(--accent-blue);text-transform:uppercase;margin-bottom:var(--space-2)}
.section-index::after{content:'';flex:1;max-width:120px;height:1px;background:linear-gradient(90deg,rgba(46,124,246,0.5),transparent)}
.section-heading{font-family:var(--font-head);font-size:clamp(1.6rem,3.5vw,2.6rem);font-weight:700;text-transform:uppercase;line-height:1.15;letter-spacing:0.02em;color:var(--text-hi);margin-bottom:var(--space-2);max-width:820px}
.section-annotation{writing-mode:vertical-rl;display:inline-block;font-family:var(--font-data);font-size:12px;letter-spacing:0.3em;color:var(--text-lo);text-transform:uppercase;opacity:0.7;margin-left:var(--space-3);white-space:nowrap}
.energy-line{display:block;height:3px;width:120%;margin-left:-10%;background:linear-gradient(100deg,var(--accent-blue),var(--accent-cyan) 55%,rgba(0,229,255,0));transform:skewX(-20deg);border:none;pointer-events:none}
.chapter-map{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--space-3)}
.chapter-entry{display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-3);border:var(--border-thin);border-radius:var(--radius);background:var(--bg-card);text-decoration:none;color:var(--text-hi);transition:border-color 0.25s ease,background 0.25s ease,transform 0.25s ease}
.chapter-entry:hover{border-color:rgba(46,124,246,0.45);background:rgba(46,124,246,0.08);color:var(--text-hi);transform:translateY(-3px)}
.chapter-index{font-family:var(--font-data);font-size:20px;font-weight:700;color:var(--accent-blue);line-height:1;flex-shrink:0}
.chapter-body{display:flex;flex-direction:column;gap:4px}
.chapter-name{font-size:16px;font-weight:600;line-height:1.3;color:var(--text-hi)}
.chapter-desc{font-size:13px;color:var(--text-lo);line-height:1.5}
.card{background:var(--bg-card);border:var(--border-thin);border-radius:var(--radius);padding:var(--space-4);box-shadow:var(--shadow-card);transition:transform 0.25s ease,border-color 0.25s ease,box-shadow 0.25s ease}
.card:hover{transform:translateY(-3px);border-color:rgba(46,124,246,0.35);box-shadow:0 14px 40px rgba(0,0,0,0.45)}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:var(--space-3)}
.data-band{position:relative;background:linear-gradient(90deg,rgba(46,124,246,0.10),rgba(0,229,255,0.04) 60%,transparent);border-top:var(--border-thin);border-bottom:var(--border-thin);overflow:hidden}
.data-band-inner{max-width:var(--content-max);margin:0 auto;padding:var(--space-4) var(--space-3);display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:var(--space-3)}
.stat-row{display:flex;flex-direction:column;gap:4px;padding:var(--space-2) var(--space-3);border-left:2px solid var(--accent-blue);background:rgba(46,124,246,0.06);border-radius:0 10px 10px 0}
.stat-value{font-family:var(--font-data);font-size:28px;font-weight:700;color:var(--text-hi);line-height:1.1}
.stat-label{font-size:12px;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-lo)}
.scoreboard{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:var(--space-2) var(--space-4);padding:var(--space-4)}
.score-team{display:flex;flex-direction:column;align-items:center;gap:6px;min-width:100px}
.score-name{font-size:14px;font-weight:600;color:var(--text-lo);text-align:center}
.score-number{font-family:var(--font-data);font-size:2.4rem;font-weight:700;color:var(--text-hi);line-height:1}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--radius-pill);font-size:12px;font-weight:500;border:var(--border-thin);color:var(--text-lo);background:rgba(255,255,255,0.03);white-space:nowrap}
.chip--live{color:var(--accent-lime);border-color:rgba(192,255,0,0.25);background:rgba(192,255,0,0.06)}
.chip--hot{color:var(--accent-orange);border-color:rgba(255,122,0,0.30);background:rgba(255,122,0,0.08)}
.live-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--accent-lime)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;text-decoration:none;line-height:1.4;transition:background 0.25s ease,transform 0.2s ease,color 0.2s ease,border-color 0.2s ease,box-shadow 0.2s ease}
.btn-primary{background:var(--accent-blue);color:#fff;box-shadow:0 6px 20px rgba(46,124,246,0.30)}
.btn-primary:hover{background:#3D8BFF;color:#fff;transform:translateY(-2px);box-shadow:0 10px 28px rgba(46,124,246,0.42)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,0.16);color:var(--text-hi)}
.btn-ghost:hover{border-color:rgba(255,255,255,0.38);color:var(--accent-cyan);transform:translateY(-2px)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-lo);margin-bottom:var(--space-4)}
.breadcrumb a{color:var(--text-lo);text-decoration:none;transition:color 0.2s ease}
.breadcrumb a:hover{color:var(--accent-cyan)}
.breadcrumb-sep{color:rgba(255,255,255,0.2)}
.visual{position:relative;border-radius:var(--radius);border:var(--border-thin);background:var(--bg-card);overflow:hidden;min-height:160px}
.visual::before{content:'';position:absolute;inset:0;z-index:0;background:radial-gradient(ellipse at 30% 20%,rgba(46,124,246,0.10),transparent 60%),linear-gradient(135deg,rgba(0,229,255,0.03),transparent)}
.visual img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.visual--wide{aspect-ratio:16/9}
.visual--tall{aspect-ratio:3/4}
.visual--square{aspect-ratio:1/1}
.visual-fallback{position:absolute;inset:0;z-index:2;display:flex;align-items:center;justify-content:center;color:var(--text-lo);font-size:14px;letter-spacing:0.05em;text-align:center;padding:var(--space-3);background:repeating-linear-gradient(45deg,transparent 0 12px,rgba(255,255,255,0.015) 12px 13px),linear-gradient(135deg,rgba(46,124,246,0.03),rgba(0,229,255,0.02))}
[data-reveal]{opacity:0;transform:translateY(24px);transition:opacity 0.55s ease,transform 0.55s ease}
[data-reveal].is-revealed{opacity:1;transform:translateY(0)}
@media (max-width:900px){
  body{padding-top:calc(var(--header-h) + var(--space-2))}
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:calc(100% + 10px);left:0;right:0;background:rgba(11,13,18,0.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,0.10);border-radius:20px;padding:var(--space-2);box-shadow:var(--shadow-card);opacity:0;visibility:hidden;transform:translateY(-12px);transition:opacity 0.25s ease,transform 0.25s ease,visibility 0.25s;pointer-events:none}
  .site-nav[data-open]{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
  .nav-list{flex-direction:column;gap:4px}
  .nav-list a{display:block;padding:13px 16px;font-size:16px;border-radius:12px;text-align:center}
  .footer-grid{grid-template-columns:1fr;gap:var(--space-4)}
  .section-annotation{display:none}
  .data-band-inner{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}
}
@media (max-width:600px){
  .header-inner{padding-right:8px}
  .brand-pill{padding-right:14px}
  .brand-name{font-size:14px}
  .footer-bottom{flex-direction:column;gap:6px;text-align:center}
  .footer-sep{display:none}
  .page-hero{padding-top:var(--space-4)}
  .card{padding:var(--space-3)}
  .data-band-inner{grid-template-columns:1fr 1fr;gap:var(--space-2)}
  .back-top{right:var(--space-2);bottom:var(--space-2)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;transition-delay:0s !important}
  [data-reveal]{opacity:1;transform:none;transition:none}
  .scroll-progress,.live-dot{display:none}
}