:root{
  --paper-bg:#F5EFE3;
  --ink-text:#1E1B1A;
  --grass-green:#0E7C5B;
  --flame-orange:#F25C22;
  --night-blue:#0B1623;
  --paper-deep:#E6DCC8;
  --line-tan:#C9BFA9;
  --muted-brown:#5E564C;
  --success-mint:#2A9D68;
  --warning-amber:#E8A12D;
  --font-display:"Arial Black","Archivo Black","Noto Sans SC","PingFang SC",sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI","Source Sans 3","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-pill:999px;
  --header-h:72px;
  --container:1240px;
  --shadow-float:0 8px 30px rgba(11,22,35,.12);
  --shadow-card:0 4px 16px rgba(11,22,35,.08);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  color:var(--ink-text);
  background:var(--paper-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--grass-green);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--flame-orange)}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
:focus-visible{outline:3px solid var(--flame-orange);outline-offset:3px;border-radius:4px}
::selection{background:var(--flame-orange);color:var(--paper-bg)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{
  position:fixed;top:-100px;left:16px;z-index:9999;
  background:var(--night-blue);color:var(--paper-bg);
  padding:12px 20px;border-radius:var(--radius-pill);
  font-weight:600;text-decoration:none;
  transition:top .2s ease;
}
.skip-link:focus{top:16px;color:var(--paper-bg);outline:none}
.site-header{
  position:fixed;top:12px;left:0;right:0;z-index:1000;
  display:flex;justify-content:center;padding:0 16px;
}
.header-inner{
  width:100%;max-width:var(--container);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:rgba(245,239,227,.88);
  backdrop-filter:blur(14px);
  border:1px solid var(--line-tan);
  border-radius:var(--radius-pill);
  padding:8px 12px 8px 20px;
  box-shadow:var(--shadow-float);
}
.brand-lockup{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{
  font-family:var(--font-display);
  font-size:20px;font-weight:900;letter-spacing:.02em;
  background:var(--night-blue);color:var(--paper-bg);
  padding:8px 12px;border-radius:14px 14px 14px 4px;
  transform:skewX(-4deg);line-height:1;
}
.brand-copy{display:flex;flex-direction:column;line-height:1.15}
.brand-name{
  font-family:var(--font-display);font-size:17px;font-weight:900;
  color:var(--ink-text);letter-spacing:.01em;
}
.brand-tagline{font-size:10px;color:var(--muted-brown);letter-spacing:.12em;text-transform:uppercase;margin-top:2px}
.site-nav{display:flex;align-items:center;gap:2px}
.site-nav a{
  font-size:14px;font-weight:600;color:var(--ink-text);
  text-decoration:none;padding:9px 14px;border-radius:var(--radius-pill);
  transition:background .2s,color .2s;
  white-space:nowrap;
}
.site-nav a:hover{background:var(--paper-deep);color:var(--grass-green)}
.site-nav a[aria-current="page"]{
  background:var(--night-blue);color:var(--paper-bg);
}
.header-cta{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--flame-orange);color:#fff;
  font-weight:700;font-size:14px;
  padding:10px 20px;border-radius:var(--radius-pill);
  text-decoration:none;white-space:nowrap;
  transition:background .2s,transform .2s,box-shadow .2s;
  box-shadow:0 4px 12px rgba(242,92,34,.3);
}
.header-cta:hover{background:#d84e18;color:#fff;transform:translateY(-1px);box-shadow:0 6px 18px rgba(242,92,34,.4)}
.nav-only-cta{display:none}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:10px;border-radius:var(--radius-md);background:var(--night-blue)}
.nav-toggle-bar{display:block;height:2px;background:var(--paper-bg);border-radius:2px;transition:transform .25s,opacity .25s}
.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-footer{background:var(--night-blue);color:#D8CDB8;padding:72px 0 0;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--flame-orange) 0%,var(--grass-green) 60%,transparent 100%);
}
.footer-inner{max-width:var(--container);margin:0 auto;padding:0 24px}
.footer-brand{margin-bottom:48px}
.footer-brand-name{
  font-family:var(--font-display);font-size:32px;font-weight:900;
  color:var(--paper-bg);letter-spacing:.02em;
}
.footer-tagline{color:#8E9AAB;font-size:14px;letter-spacing:.08em;margin-top:6px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(216,205,184,.12)}
.footer-title{
  font-family:var(--font-display);font-size:14px;font-weight:700;
  color:var(--paper-bg);text-transform:uppercase;letter-spacing:.14em;
  margin-bottom:18px;position:relative;padding-left:14px;
}
.footer-title::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--flame-orange)}
.footer-text{font-size:14px;line-height:1.8;color:#AAB4C0;max-width:40ch}
.footer-link-list li{margin-bottom:10px}
.footer-link-list a{color:#AAB4C0;text-decoration:none;font-size:14px;transition:color .2s}
.footer-link-list a:hover{color:var(--flame-orange)}
.footer-contact-list li{margin-bottom:10px;font-size:14px;color:#AAB4C0;line-height:1.6}
.footer-contact-list a{color:#AAB4C0;text-decoration:none;transition:color .2s}
.footer-contact-list a:hover{color:var(--grass-green)}
.footer-meta{display:flex;justify-content:space-between;align-items:center;padding:24px 0;flex-wrap:wrap;gap:12px}
.footer-copy,.footer-icp{font-size:13px;color:#6B7A8D}
.footer-icp{letter-spacing:.06em}

.chapter-band{position:relative;padding:80px 0;background:var(--paper-bg);overflow:hidden}
.chapter-band.is-night{background:var(--night-blue);color:var(--paper-bg)}
.chapter-id{
  font-family:var(--font-display);font-weight:900;font-size:120px;line-height:.9;
  color:transparent;-webkit-text-stroke:2px var(--grass-green);
  position:absolute;right:-10px;top:20px;opacity:.35;pointer-events:none;
}
.chapter-band.is-night .chapter-id{-webkit-text-stroke-color:#2E4C6A}
.arena-card{
  background:var(--paper-deep);border-radius:var(--radius-lg);
  padding:32px;position:relative;transition:box-shadow .25s,transform .25s;
  border:2px solid transparent;
}
.arena-card:hover{box-shadow:var(--shadow-card);transform:translateY(-2px);border-color:var(--flame-orange)}
.arena-card h3{font-family:var(--font-display);font-size:20px;margin-bottom:8px}
.arena-card p{font-size:14px;color:var(--muted-brown);line-height:1.7}
.flame-border{position:relative}
.flame-border::after{
  content:"";position:absolute;inset:0;border-radius:inherit;
  border:2px solid transparent;
  background:linear-gradient(120deg,var(--flame-orange),var(--warning-amber),var(--grass-green)) border-box;
  -webkit-mask:linear-gradient(#fff 0 0) padding-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity .25s;
  pointer-events:none;
}
.flame-border:hover::after{opacity:1}
.ticker-track{display:flex;overflow:hidden;gap:0;position:relative}
.ticker-item{
  flex:0 0 auto;padding:12px 24px;margin-right:48px;
  font-family:var(--font-display);font-weight:700;font-size:15px;
  color:var(--night-blue);border-radius:var(--radius-pill);
  background:var(--paper-deep);border:1px solid var(--line-tan);
  animation:ticker-move 20s linear infinite;
}
@keyframes ticker-move{0%{transform:translateX(0)}100%{transform:translateX(-100%)}}
.section-index{display:flex;flex-direction:column;gap:8px;position:sticky;top:calc(var(--header-h) + 20px)}
.section-index a{
  font-family:var(--font-display);font-size:13px;font-weight:700;
  padding:10px 18px;border-radius:var(--radius-pill);
  background:var(--paper-deep);color:var(--ink-text);
  text-decoration:none;text-align:right;transition:background .2s,color .2s;
}
.section-index a:hover,.section-index a.is-active{background:var(--grass-green);color:#fff}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--muted-brown);margin-bottom:32px}
.breadcrumb a{color:var(--grass-green);text-decoration:none}
.breadcrumb a:hover{color:var(--flame-orange)}
.breadcrumb-item::after{content:"→";color:var(--line-tan);margin-left:8px}
.breadcrumb-item:last-child::after{content:none}

@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-nav a{padding:9px 12px;font-size:13px}
}
@media (max-width:820px){
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .nav-only-cta{display:inline-flex;margin-top:8px}
  .site-header{top:8px;padding:0 8px}
  .header-inner{border-radius:20px;padding-left:16px}
  .site-nav{
    position:absolute;top:calc(100% + 8px);left:8px;right:8px;
    display:none;flex-direction:column;align-items:stretch;
    background:var(--paper-bg);border-radius:20px;
    box-shadow:var(--shadow-float);border:1px solid var(--line-tan);
    padding:12px;gap:2px;
  }
  .site-nav[data-open="true"]{display:flex}
  .site-nav a{border-radius:14px;padding:14px 16px;font-size:16px}
  .site-nav a:hover{background:var(--paper-deep)}
  .brand-tagline{display:none}
  .brand-name{font-size:15px}
  .brand-mark{font-size:16px;padding:6px 10px}
  .header-inner{height:60px}
  .chapter-id{font-size:72px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-meta{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .brand-tagline{display:none}
  .brand-mark{font-size:14px;padding:6px 9px}
  .brand-name{font-size:14px}
}
@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}
}