/* ============================================================
   必一娱乐赛场 · /assets/site.css
   共享外壳：夜场战术板 × 实时数据屏
   1 重置 / 2 变量 / 3 排版 / 4 版心与网格 / 5 通用组件
   6 头部 / 7 页脚 / 8 动效与可访问 / 9 响应式
   ============================================================ */

/* --- 1. 重置 --- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:112px}
body,figure,blockquote,dl,dd{margin:0}
h1,h2,h3,h4,h5,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
img,picture,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}

/* --- 2. 变量 --- */
:root{
  --bg:#04120F;
  --bg-raise:#0A1F1A;
  --line:#122E27;
  --cyan:#35F2C8;
  --cyan-soft:#8FF7E0;
  --cyan-deep:#157F6B;
  --amber:#F5A524;
  --text:#C7D6D2;
  --text-dim:#7C918C;
  --white:#F2FFFB;
  --radius-pill:999px;
  --radius-panel:28px;
  --radius-soft:16px;
  --shell:1280px;
  --read:1200px;
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --font-body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-head:"Helvetica Neue","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}

/* --- 3. 排版 --- */
body{
  min-height:100vh;
  background-color:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.7;
  letter-spacing:.005em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(880px 520px at 10% -6%, rgba(53,242,200,.10), transparent 62%),
    radial-gradient(760px 460px at 98% 4%, rgba(21,127,107,.18), transparent 68%),
    linear-gradient(180deg,#04120F 0%,#051814 55%,#04120F 100%);
}
h1,h2,h3,h4,h5{font-family:var(--font-head);font-weight:800;letter-spacing:-.02em;color:var(--white);line-height:1.15}
h1{font-size:clamp(34px,5vw,56px)}
h2{font-size:clamp(26px,3.4vw,40px)}
h3{font-size:clamp(20px,2.2vw,28px)}
h4{font-size:20px}
strong{color:var(--white)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.muted{color:var(--text-dim)}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--cyan-soft);
  margin-bottom:14px;
}
.section-title{max-width:22em}
.lede{font-size:17px;line-height:1.75;color:var(--text);max-width:34em}
.prose{max-width:34em}
.prose p{max-width:34em}
.prose p+p{margin-top:1.05em}
.prose h2,.prose h3{margin:1.6em 0 .6em}
.prose ul{margin:1em 0}
.prose li{position:relative;padding-left:20px;margin-bottom:.55em}
.prose li::before{content:"";position:absolute;left:0;top:.78em;width:8px;height:1px;background:var(--cyan)}

/* --- 4. 版心与网格 --- */
.container{width:100%;max-width:var(--read);margin:0 auto;padding-left:clamp(16px,3vw,32px);padding-right:clamp(16px,3vw,32px)}
.container--narrow{max-width:820px}
.section{position:relative;padding-top:clamp(48px,7vw,96px);padding-bottom:clamp(48px,7vw,96px)}
.section--band{background:linear-gradient(180deg,rgba(10,31,26,.92),rgba(4,18,15,0))}
.section--quiet{background:linear-gradient(180deg,rgba(10,31,26,.55),rgba(4,18,15,0))}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(232px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}

/* --- 5. 通用组件 --- */
.panel{
  background:linear-gradient(160deg,#0A1F1A 0%,#061A16 100%);
  border-radius:var(--radius-panel);
  padding:clamp(20px,3vw,32px);
  box-shadow:0 30px 70px -52px rgba(0,0,0,.95);
}
.rule{height:1px;border:0;background:var(--line)}
.rule--glow{background:linear-gradient(90deg,transparent,rgba(53,242,200,.45),transparent)}

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{
  background:linear-gradient(140deg,#35F2C8,#8FF7E0);
  color:#04120F;
  box-shadow:0 16px 36px -20px rgba(53,242,200,.9);
}
.btn--primary:hover{background:linear-gradient(140deg,#8FF7E0,#35F2C8)}
.btn--ghost{
  background:rgba(53,242,200,.07);
  color:var(--cyan-soft);
  box-shadow:inset 0 0 0 1px rgba(53,242,200,.3);
}
.btn--ghost:hover{background:rgba(53,242,200,.15);color:var(--white)}

.pill-group{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 15px;
  border-radius:var(--radius-pill);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text);
  background:rgba(18,46,39,.6);
  transition:background-color var(--ease),color var(--ease),transform var(--ease);
}
.pill:hover{background:rgba(21,127,106,.5);color:var(--white);transform:translateY(-2px)}
.pill[aria-pressed="true"],.pill[aria-selected="true"]{background:var(--cyan);color:#04120F;font-weight:700}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:18px 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-dim);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#2b4a43}
.breadcrumb a{border-bottom:1px solid transparent;transition:color var(--ease),border-color var(--ease)}
.breadcrumb a:hover{color:var(--cyan-soft);border-bottom-color:currentColor}

.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  border-radius:var(--radius-panel);
  background:linear-gradient(150deg,#0A1F1A,#04120F);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--tall{aspect-ratio:9/16;border-radius:32px}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(242,255,251,.035) 0 1px,transparent 1px 3px);
}
.media-cap{margin-top:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--text-dim)}

.data-bar{
  position:sticky;
  top:0;
  z-index:30;
  padding:10px 0;
  background:linear-gradient(180deg,rgba(10,31,26,.97),rgba(10,31,26,.86));
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.data-table{font-size:14px}
.data-table th{
  padding:10px 12px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--text-dim);
  border-bottom:1px solid var(--line);
}
.data-table td{padding:12px;border-bottom:1px solid rgba(18,46,39,.7);color:var(--text)}
.data-table tbody tr:nth-child(even){background:rgba(10,31,26,.62)}
.data-table tbody tr:hover{background:rgba(21,127,106,.24)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--white)}
.delta{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em}
.delta--up{color:var(--amber)}
.delta--down{color:var(--cyan-soft)}

/* --- 6. 头部 --- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,rgba(4,18,15,.97),rgba(4,18,15,.88));
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:1px;
  pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(53,242,200,.5),transparent);
}
.skip-link{
  position:absolute;
  left:16px;
  top:-64px;
  z-index:200;
  padding:10px 18px;
  border-radius:var(--radius-pill);
  background:var(--cyan);
  color:#04120F;
  font-size:14px;
  font-weight:700;
  transition:top var(--ease);
}
.skip-link:focus{top:12px}
.header-inner{width:100%;max-width:var(--shell);margin:0 auto;padding:0 clamp(16px,3vw,32px)}

.header-upper{display:flex;align-items:center;gap:clamp(12px,2vw,26px);padding:14px 0 12px}
.brand{display:flex;align-items:center;gap:12px;margin-right:auto;min-width:0}
.brand-mark{
  flex:0 0 auto;
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  border-radius:14px;
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  color:#04120F;
  background:linear-gradient(140deg,#35F2C8,#8FF7E0 58%,#157F6B);
  box-shadow:0 14px 32px -18px rgba(53,242,200,.95);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-family:var(--font-head);font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--white);line-height:1.25}
.brand-tagline{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--text-dim);line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.utility-nav{display:flex;align-items:center;gap:20px}
.utility-link{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-dim);
  padding:4px 0;
  border-bottom:1px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.utility-link:hover{color:var(--cyan-soft);border-bottom-color:var(--cyan)}
.status-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:var(--radius-pill);
  background:rgba(53,242,200,.06);
  box-shadow:inset 0 0 0 1px rgba(53,242,200,.28);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--cyan-soft);
  white-space:nowrap;
}
.status-dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(53,242,200,.15);
  animation:status-pulse 2.6s ease-in-out infinite;
}
@keyframes status-pulse{0%,100%{opacity:1}50%{opacity:.45}}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 14px;
  border-radius:var(--radius-pill);
  background:rgba(53,242,200,.06);
  box-shadow:inset 0 0 0 1px rgba(53,242,200,.28);
  color:var(--white);
  transition:transform var(--ease),background-color var(--ease);
}
.nav-toggle:hover{transform:translateY(-2px);background:rgba(53,242,200,.13)}
.nav-toggle-lines{display:grid;gap:4px;width:16px}
.nav-toggle-lines span{display:block;height:2px;border-radius:2px;background:var(--cyan);transition:transform var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:last-child{transform:translateY(-3px) rotate(-45deg)}
.nav-toggle-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em}

.primary-nav{display:flex;align-items:center;border-top:1px solid var(--line)}
.nav-list{display:flex;align-items:center;gap:2px;padding:7px 0}
.nav-item{display:block}
.nav-link{
  display:inline-block;
  padding:9px 15px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  color:var(--text);
  transition:background-color var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.nav-link:hover{
  background:rgba(53,242,200,.09);
  color:var(--white);
  transform:translateY(-2px);
}
.nav-link[aria-current="page"]{
  background:linear-gradient(140deg,rgba(53,242,200,.2),rgba(21,127,106,.32));
  color:var(--white);
  box-shadow:inset 0 0 0 1px rgba(53,242,200,.38);
}

/* --- 7. 页脚 --- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,110px);
  background:linear-gradient(180deg,rgba(10,31,26,.7),#04120F 46%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:1px;
  pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(53,242,200,.5),transparent);
}
.footer-inner{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:clamp(36px,5vw,64px) clamp(16px,3vw,32px) 26px;
}
.footer-brand{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  gap:20px 32px;
  padding-bottom:clamp(24px,3vw,36px);
  border-bottom:1px solid var(--line);
}
.footer-brand-text{flex:1 1 320px;min-width:0}
.footer-brand-name{font-family:var(--font-head);font-size:clamp(22px,3vw,30px);font-weight:800;letter-spacing:-.02em;color:var(--white);line-height:1.2}
.footer-summary{margin-top:10px;max-width:40em;font-size:15px;line-height:1.7;color:var(--text-dim)}
.footer-cta{flex:0 0 auto}

.footer-mid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,1.3fr);
  gap:clamp(20px,3vw,40px);
  padding:clamp(28px,4vw,44px) 0;
}
.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--cyan-soft);
}
.footer-links li+li{margin-top:10px}
.footer-links a{
  font-size:15px;
  color:var(--text);
  border-bottom:1px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.footer-links a:hover{color:var(--white);border-bottom-color:var(--cyan)}
.contact-line{margin-bottom:8px;font-size:14px;color:var(--text);overflow-wrap:anywhere}
.contact-note{margin-top:10px;font-size:12.5px;line-height:1.65;color:var(--text-dim);max-width:34em}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--text-dim);
}
.footer-note{flex:1 1 280px;color:var(--text-dim)}
.footer-legal{color:var(--cyan-soft)}
.footer-meta{margin-left:auto}

/* --- 8. 动效与可访问 --- */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
html.js-on [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity 520ms ease,transform 520ms ease}
html.js-on [data-reveal].is-visible{opacity:1;transform:none}
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:2px;
  z-index:90;
  pointer-events:none;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,#35F2C8,#8FF7E0 62%,#F5A524);
  transition:transform 120ms linear;
}

/* --- 9. 响应式 --- */
@media (max-width:1180px){
  .brand-tagline{max-width:280px}
  .utility-nav{gap:14px}
}
@media (max-width:1024px){
  .footer-mid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 32px}
  .footer-col:nth-child(4){grid-column:1 / -1}
}
@media (max-width:940px){
  html{scroll-padding-top:96px}
  .utility-nav{display:none}
  .status-chip{display:none}
  .nav-toggle{display:inline-flex}
  .header-upper{padding:12px 0}
  .primary-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:block;
    max-height:0;
    overflow:hidden;
    opacity:0;
    visibility:hidden;
    background:linear-gradient(180deg,#081815,#04120F);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 34px 60px -40px rgba(0,0,0,.95);
    transition:max-height 220ms ease,opacity 200ms ease,visibility 200ms ease;
  }
  .primary-nav[data-open]{
    max-height:min(78vh,560px);
    overflow-y:auto;
    opacity:1;
    visibility:visible;
  }
  .nav-list{display:block;padding:12px clamp(16px,4vw,32px) 20px}
  .nav-item{display:block}
  .nav-item+.nav-item{border-top:1px solid var(--line)}
  .nav-link{
    display:block;
    padding:15px 12px;
    border-radius:var(--radius-soft);
    font-size:16px;
  }
  .nav-link:hover{transform:none}
  .nav-link[aria-current="page"]{box-shadow:none;background:rgba(53,242,200,.14)}
}
@media (max-width:720px){
  body{font-size:16px;line-height:1.68}
  .panel{padding:20px}
  .media-frame--tall{border-radius:26px}
  .data-table{font-size:13px}
  .data-table th,.data-table td{padding:10px 8px}
}
@media (max-width:560px){
  .brand-tagline{display:none}
  .brand-mark{width:38px;height:38px;border-radius:12px}
  .footer-mid{grid-template-columns:minmax(0,1fr)}
  .footer-col:nth-child(4){grid-column:auto}
  .footer-bottom{font-size:12px}
  .footer-meta{margin-left:0}
  .footer-cta{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .status-dot{animation:none}
  html.js-on [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
  .btn:hover,.pill:hover,.nav-link:hover,.nav-toggle:hover{transform:none}
}