/* ============================================================
   问鼎娱乐电子版 · 共享外壳样式  /assets/site.css
   1 reset  2 variables  3 base  4 typography  5 layout
   6 components  7 header  8 footer  9 motion  10 responsive
   ============================================================ */

/* ---------- 1. RESET ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
svg{height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}
html.nav-open{overflow:hidden}

/* ---------- 2. VARIABLES ---------- */
:root{
  --ink:#070A0F;
  --ink-soft:#0B131A;
  --graphite:#1A222D;
  --graphite-2:#121A22;
  --cyan:#00E5FF;
  --purple:#A855F7;
  --gold:#FF8A00;
  --glass:#E8F6FF;
  --green:#3DFFA2;
  --red:#FF4D6D;
  --text:#E8F6FF;
  --text-dim:#9FB4C6;
  --text-mute:#6C8194;
  --line:rgba(232,246,255,.14);
  --line-soft:rgba(232,246,255,.08);
  --line-strong:rgba(0,229,255,.40);
  --glass-bg:rgba(232,246,255,.055);
  --header-h:104px;
  --radius:16px;
  --radius-sm:10px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-en:"Helvetica Neue",Helvetica,Arial,"Segoe UI",system-ui,sans-serif;
  --font-mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}

/* ---------- 3. BASE ---------- */
body{
  min-height:100%;
  background-color:var(--ink);
  background-image:
    radial-gradient(900px 520px at 6% -8%, rgba(0,229,255,.14), transparent 62%),
    radial-gradient(760px 520px at 98% 6%, rgba(168,85,247,.13), transparent 60%),
    radial-gradient(720px 480px at 48% 112%, rgba(255,138,0,.08), transparent 64%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(232,246,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,246,255,.045) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(130% 100% at 50% 0%, #000 22%, transparent 86%);
  mask-image:radial-gradient(130% 100% at 50% 0%, #000 22%, transparent 86%);
}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
::selection{background:rgba(0,229,255,.28);color:#04131A}

/* ---------- 4. TYPOGRAPHY ---------- */
h1,h2,h3,h4,h5{font-weight:900;line-height:1.16;letter-spacing:-.03em;color:var(--glass)}
h3,h4,h5{line-height:1.3;letter-spacing:-.02em}
p{max-width:72ch}
a{color:var(--cyan);text-decoration:none}
a:hover{color:#7DF0FF}
strong{color:var(--glass);font-weight:800}
.mono{font-family:var(--font-mono);letter-spacing:.08em}
.muted{color:var(--text-mute)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan))}
.display{
  font-family:var(--font-cn);
  font-size:clamp(42px,9vw,120px);
  font-weight:900;line-height:.98;letter-spacing:-.045em;color:var(--glass);
}
.section-title{font-size:clamp(26px,3.6vw,44px);font-weight:900;letter-spacing:-.035em;line-height:1.1}
.section-head{display:flex;flex-wrap:wrap;gap:16px 32px;align-items:flex-end;justify-content:space-between;margin-bottom:clamp(24px,4vw,44px)}
.lede{max-width:64ch;font-size:clamp(16px,1.4vw,18px);color:var(--text-dim)}

/* ---------- 5. LAYOUT ---------- */
.container{width:min(1240px,92vw);margin-inline:auto}
.container--wide{width:min(1480px,94vw)}
.section{position:relative;padding:clamp(52px,7.5vw,110px) 0}
.section--tight{padding:clamp(30px,4.5vw,62px) 0}
.section--alt{
  background:linear-gradient(180deg,rgba(11,19,26,.92),rgba(7,10,15,.5));
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(20px,4vw,56px);align-items:start}
.grid{display:grid;gap:clamp(14px,2vw,24px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(236px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(184px,1fr))}
.slant{height:1px;margin:clamp(32px,6vw,72px) 0;transform:skewY(-1.2deg);
  background:linear-gradient(90deg,transparent,rgba(0,229,255,.5),rgba(168,85,247,.4),transparent)}

/* ---------- 6. COMPONENTS ---------- */
.glass{
  background:var(--glass-bg);
  border:1px solid var(--line);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(12px) saturate(130%);
  backdrop-filter:blur(12px) saturate(130%);
}
.solid{
  background:linear-gradient(160deg,var(--graphite),var(--graphite-2));
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
}
.card{padding:clamp(18px,2.4vw,28px);position:relative;overflow:hidden}
.card--hover{transition:transform .32s ease,border-color .32s ease,box-shadow .32s ease}
.card--hover:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 26px 64px -42px rgba(0,229,255,.9)}
.card-title{font-size:19px;font-weight:800;letter-spacing:-.015em;margin-bottom:8px}
.card-text{font-size:15px;line-height:1.72;color:var(--text-dim)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;border:1px solid currentColor;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);background:rgba(0,229,255,.08);
}
.badge--purple{color:var(--purple);background:rgba(168,85,247,.1)}
.badge--gold{color:var(--gold);background:rgba(255,138,0,.1)}
.badge--green{color:var(--green);background:rgba(61,255,162,.1)}
.badge--red{color:var(--red);background:rgba(255,77,109,.1)}

.stat{padding:16px 0}
.stat-value{font-family:var(--font-en);font-size:clamp(30px,4vw,52px);font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--cyan)}
.stat-label{margin-top:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-mute)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-cn);font-size:14px;font-weight:700;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;background:transparent;color:var(--glass);
  transition:transform .2s ease,box-shadow .26s ease,background .26s ease,color .26s ease,border-color .26s ease;
}
.btn--solid{background:var(--cyan);color:#04131A;font-weight:800}
.btn--solid:hover{background:#63F1FF;color:#04131A}
.btn--ghost{border-color:var(--line);color:var(--glass)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--gold{border-color:rgba(255,138,0,.5);color:var(--gold)}
.btn--gold:hover{border-color:var(--gold);color:var(--gold);box-shadow:0 0 24px -8px rgba(255,138,0,.8)}
.btn--sm{padding:8px 14px;font-size:13px}

.tabs{display:flex;flex-wrap:wrap;gap:6px;border-bottom:1px solid var(--line)}
.tab{
  appearance:none;cursor:pointer;background:transparent;color:var(--text-dim);
  padding:10px 14px;border:0;border-bottom:2px solid transparent;
  font-family:var(--font-cn);font-size:15px;font-weight:700;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.tab:hover{color:var(--glass)}
.tab[aria-selected="true"]{color:var(--cyan);border-bottom-color:var(--cyan);background:rgba(0,229,255,.07)}
.panel{padding-top:22px}

.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.filter-btn{
  cursor:pointer;padding:8px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(232,246,255,.03);color:var(--text-dim);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.filter-btn:hover{color:var(--glass);border-color:var(--line-strong)}
.filter-btn[aria-pressed="true"]{color:var(--cyan);border-color:var(--line-strong);background:rgba(0,229,255,.1)}

.crumbs{margin-bottom:22px;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-mute)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.crumbs li{display:flex;align-items:center;gap:10px}
.crumbs li+li::before{content:"/";color:rgba(232,246,255,.3)}
.crumbs a{color:var(--text-dim);border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--cyan)}

.media-frame{
  position:relative;display:block;width:100%;aspect-ratio:16/10;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:
    radial-gradient(120% 120% at 12% 8%, rgba(0,229,255,.24), transparent 56%),
    radial-gradient(120% 120% at 88% 92%, rgba(168,85,247,.24), transparent 56%),
    linear-gradient(160deg,var(--ink-soft),var(--ink));
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    linear-gradient(rgba(232,246,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,246,255,.07) 1px, transparent 1px);
  background-size:38px 38px;
}
.media-frame img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-cap{margin-top:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-mute)}

.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);-webkit-overflow-scrolling:touch}
.data{min-width:640px}
.data th,.data td{padding:14px 16px;text-align:left;font-size:15px;border-bottom:1px solid var(--line-soft)}
.data th{font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--text-mute);background:rgba(232,246,255,.04)}
.data tbody tr{transition:background .2s ease}
.data tbody tr:hover{background:rgba(0,229,255,.05)}
.data tbody tr:last-child td{border-bottom:0}

.to-top{
  position:fixed;right:20px;bottom:22px;z-index:50;
  width:46px;height:46px;border-radius:50%;cursor:pointer;
  border:1px solid var(--line-strong);background:rgba(7,10,15,.84);color:var(--cyan);
  font-family:var(--font-mono);font-size:15px;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,box-shadow .28s ease;
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{box-shadow:0 0 26px -8px rgba(0,229,255,.9)}

/* ---------- 7. HEADER ---------- */
.skip-link{
  position:absolute;left:16px;top:-64px;z-index:200;
  padding:10px 18px;border-radius:0 0 10px 10px;
  background:var(--cyan);color:#04131A;font-weight:800;text-decoration:none;
  transition:top .2s ease;
}
.skip-link:focus{top:0;color:#04131A}

.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(7,10,15,.97),rgba(7,10,15,.84));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-rail{
  display:flex;align-items:center;gap:18px;min-height:30px;
  padding:5px clamp(16px,4vw,40px);
  border-bottom:1px solid rgba(232,246,255,.07);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-mute);
}
.rail-brand{max-width:none;color:rgba(232,246,255,.7)}
.rail-status{display:flex;align-items:center;gap:7px;max-width:none;color:var(--green)}
.rail-code{margin-left:auto;max-width:none;color:var(--cyan)}
.status-dot{
  width:6px;height:6px;border-radius:50%;background:var(--green);
  box-shadow:0 0 10px var(--green);animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.72)}}

.header-bar{display:flex;align-items:center;gap:clamp(12px,2vw,28px);padding:11px clamp(16px,4vw,40px)}
.brand{display:flex;flex-direction:column;gap:1px;text-decoration:none;flex:0 0 auto}
.brand-mark{font-size:22px;font-weight:900;letter-spacing:-.05em;color:var(--glass);line-height:1.1}
.brand-sub{font-family:var(--font-en);font-size:10px;letter-spacing:.22em;color:var(--cyan)}
.brand:hover .brand-mark{color:var(--cyan)}

.site-nav{margin-left:auto}
.nav-list{display:flex;align-items:stretch;gap:2px}
.nav-link{
  display:flex;align-items:baseline;gap:7px;
  padding:10px 12px;border-bottom:2px solid transparent;
  font-size:15px;font-weight:600;color:rgba(232,246,255,.72);text-decoration:none;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.nav-idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--text-mute);transition:color .2s ease}
.nav-label{white-space:nowrap}
.nav-link:hover{color:var(--glass);background:rgba(0,229,255,.06)}
.nav-link[aria-current="page"]{color:var(--cyan);border-bottom-color:var(--cyan);background:rgba(0,229,255,.05)}
.nav-link[aria-current="page"] .nav-idx{color:var(--cyan)}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.btn-cta{
  border-color:var(--line-strong);color:var(--cyan);
  background:linear-gradient(120deg,rgba(0,229,255,.16),rgba(168,85,247,.2));
  box-shadow:inset 0 0 0 1px rgba(0,229,255,.1);
}
.btn-cta:hover{color:#8CF3FF;transform:translateY(-1px);box-shadow:0 0 26px -6px rgba(0,229,255,.7)}

.nav-toggle{
  display:none;align-items:center;gap:9px;cursor:pointer;
  padding:10px 14px;border-radius:999px;border:1px solid var(--line);
  background:rgba(232,246,255,.04);color:var(--glass);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
}
.toggle-bars{position:relative;display:block;width:16px;height:2px;background:var(--cyan);transition:background .24s ease}
.toggle-bars::before,.toggle-bars::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--cyan);transition:transform .24s ease,top .24s ease}
.toggle-bars::before{top:-5px}
.toggle-bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .toggle-bars::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .toggle-bars::after{top:0;transform:rotate(-45deg)}

.scroll-progress{
  height:2px;width:100%;transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--purple),var(--gold));
  will-change:transform;
}

/* ---------- 8. FOOTER ---------- */
.site-footer{
  position:relative;margin-top:clamp(48px,8vw,110px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,19,26,.92),rgba(7,10,15,.98));
}
.footer-inner{display:grid;grid-template-columns:1.3fr 1fr 1.6fr;gap:clamp(24px,4vw,56px);padding:clamp(36px,5vw,64px) 0}
.footer-brand{min-width:0}
.footer-name{font-size:clamp(22px,2.4vw,30px);font-weight:900;letter-spacing:-.04em;color:var(--glass)}
.footer-code{margin-top:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--cyan)}
.footer-heading{margin-bottom:14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--text-mute)}
.footer-list{display:grid;gap:10px}
.footer-link{display:inline-block;padding-bottom:2px;font-size:15px;color:var(--text-dim);text-decoration:none;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.contact-list{display:grid;gap:12px}
.contact-item{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 10px}
.contact-key{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);min-width:42px}
.contact-value{font-size:15px;color:var(--glass);word-break:break-all}
.copy-btn{
  margin-left:auto;cursor:pointer;padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);background:transparent;color:var(--text-mute);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  transition:color .2s ease,border-color .2s ease;
}
.copy-btn:hover{color:var(--cyan);border-color:var(--line-strong)}
.copy-btn[data-copied]{color:var(--green);border-color:rgba(61,255,162,.5)}
.footer-meta{border-top:1px solid var(--line-soft);background:rgba(7,10,15,.7)}
.footer-meta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;
  padding:16px 0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--text-mute);
}
.footer-icp{max-width:none;color:var(--text-dim)}
.footer-copy{max-width:none}
.footer-coord{max-width:none;color:rgba(0,229,255,.72)}

/* ---------- 9. MOTION / REVEAL ---------- */
.js-on .reveal{opacity:0;transform:translateY(18px);transition:opacity .68s ease,transform .68s cubic-bezier(.2,.8,.2,1)}
.js-on .reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .js-on .reveal{opacity:1;transform:none}
  .status-dot{animation:none}
  .card--hover:hover{transform:none}
}

/* ---------- 10. RESPONSIVE ---------- */
@media (min-width:900px){
  body{background-attachment:fixed}
}
@media (max-width:1180px){
  .nav-idx{display:none}
  .nav-link{padding:10px 9px;font-size:14px}
}
@media (max-width:960px){
  :root{--header-h:84px}
  .header-rail{gap:14px;font-size:10px;letter-spacing:.1em}
  .rail-code{display:none}
  .header-bar{padding:10px 16px;gap:12px}
  .brand-mark{font-size:19px}
  .brand-sub{font-size:9px;letter-spacing:.16em}
  .header-actions{margin-left:auto}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;margin:0;
    padding:12px 18px 20px;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;overscroll-behavior:contain;
    background:linear-gradient(180deg,rgba(7,10,15,.995),rgba(11,19,26,.98));
    border-bottom:1px solid var(--line);
    box-shadow:0 44px 80px -40px rgba(0,0,0,.95);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity .25s ease,transform .3s ease,visibility .25s linear;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .nav-list{flex-direction:column;gap:0}
  .nav-link{
    justify-content:flex-start;font-size:20px;font-weight:800;letter-spacing:-.02em;
    padding:15px 12px;border-bottom:1px solid var(--line-soft);border-left:2px solid transparent;
  }
  .nav-idx{display:inline;min-width:26px;font-size:11px}
  .nav-link[aria-current="page"]{
    border-bottom-color:var(--line-soft);border-left-color:var(--cyan);
    background:rgba(0,229,255,.07);color:var(--cyan);
  }
  .split{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .footer-inner{grid-template-columns:1fr}
  .contact-value{font-size:14px}
  .data th,.data td{padding:12px}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .btn-cta{padding:8px 12px;font-size:12px}
  .nav-toggle{padding:8px 11px}
  .toggle-label{display:none}
  .copy-btn{margin-left:0}
}