/* =========================================================
   黄金城娱乐城 · 全站共享样式  /assets/site.css
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure,blockquote,fieldset{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video,canvas{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;border-spacing:0;width:100%}
address{font-style:normal}
[hidden]{display:none !important}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0B0A12;
  --ink-2:#14121F;
  --glass:#1E1B2E;
  --gold:#C9A227;
  --gold-hi:#F2D06B;
  --violet:#7A4BFF;
  --cyan:#34E0E0;
  --text:#E8E6F0;
  --muted:#9A97AD;
  --line:#2A2740;

  --rail-w:264px;
  --bar-h:62px;
  --content-max:1180px;
  --gutter:clamp(18px,4vw,56px);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 26px 60px -34px rgba(0,0,0,.95);
  --ease:cubic-bezier(.4,0,.2,1);

  --font-head:'Noto Sans SC','Source Han Sans SC','PingFang SC',system-ui,sans-serif;
  --font-accent:'Noto Serif SC','Songti SC',serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC',system-ui,sans-serif;
}

/* ---------- 3. 基础排版 ---------- */
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(760px 520px at 10% -8%, rgba(201,162,39,.20), transparent 62%),
    radial-gradient(700px 480px at 94% 6%, rgba(122,75,255,.16), transparent 66%),
    radial-gradient(760px 540px at 76% 98%, rgba(52,224,224,.10), transparent 70%);
}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;letter-spacing:-.01em;line-height:1.25;color:#fff}
h1{font-size:clamp(34px,5.4vw,72px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px}
p{max-width:70ch}
strong{color:#fff;font-weight:700}
.muted{color:var(--muted)}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--gold-hi);outline-offset:3px;border-radius:8px}
[id]{scroll-margin-top:calc(var(--bar-h) + 20px)}
::selection{background:rgba(201,162,39,.4);color:#fff}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:900;
  transform:translateY(-200%);
  background:var(--gold-hi);color:#17130A;
  padding:10px 18px;border-radius:999px;
  font-size:14px;font-weight:700;letter-spacing:.04em;
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:none}

/* ---------- 5. 滚动进度 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:240;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--gold),var(--gold-hi) 60%,var(--cyan));
  pointer-events:none;
}

/* ---------- 6. 品牌标识 ---------- */
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  position:relative;flex:0 0 38px;width:38px;height:38px;
  border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,var(--gold-hi),var(--gold) 48%,#6B5312);
  box-shadow:0 0 0 1px rgba(242,208,107,.35),0 12px 26px -14px rgba(201,162,39,.95);
}
.brand-mark-core{
  width:13px;height:13px;border-radius:3px;
  background:var(--ink);
  transform:rotate(45deg);
  box-shadow:inset 0 0 0 1px rgba(242,208,107,.6);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-family:var(--font-head);font-size:16px;font-weight:800;color:#fff;line-height:1.3}
.brand-line{font-size:11px;color:var(--muted);letter-spacing:.04em;line-height:1.5}

/* ---------- 7. 侧轨 / 头部 ---------- */
.site-rail{
  position:fixed;top:0;left:0;right:0;z-index:200;
  border-bottom:1px solid var(--line);
}
.site-rail::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:rgba(11,10,18,.9);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  box-shadow:0 18px 40px -30px rgba(0,0,0,1);
}
.rail-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;padding:12px var(--gutter);
}
.rail-head{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:0;flex:1}

.rail-toggle{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 14px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(30,27,46,.7);
  color:var(--text);font-size:12.5px;font-weight:700;letter-spacing:.14em;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.rail-toggle:hover{border-color:rgba(242,208,107,.55);color:var(--gold-hi)}
.rail-toggle-bars{display:grid;gap:4px;width:18px}
.rail-toggle-bars i{display:block;height:2px;border-radius:2px;background:var(--gold-hi);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.site-rail[data-open] .rail-toggle-bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-rail[data-open] .rail-toggle-bars i:nth-child(2){opacity:0}
.site-rail[data-open] .rail-toggle-bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 抽屉遮罩 */
.rail-scrim{
  position:fixed;inset:0;z-index:1;
  background:rgba(5,4,10,.74);
  opacity:0;pointer-events:none;
  transition:opacity .26s var(--ease);
}
.site-rail[data-open] .rail-scrim{opacity:1;pointer-events:auto}

/* 导航 */
.site-nav{
  position:fixed;top:var(--bar-h);left:0;bottom:0;z-index:2;
  width:min(84vw,340px);
  display:flex;flex-direction:column;gap:16px;
  padding:22px 20px 28px;
  overflow-y:auto;
  background:linear-gradient(180deg,rgba(30,27,46,.99),rgba(11,10,18,.99));
  border-right:1px solid var(--line);
  box-shadow:var(--shadow);
  transform:translateX(-102%);
  visibility:hidden;
  transition:transform .28s var(--ease),visibility .28s var(--ease);
}
.site-rail[data-open] .site-nav{transform:none;visibility:visible}

.nav-caption{
  font-family:var(--font-accent);
  font-size:11.5px;letter-spacing:.26em;color:var(--muted);
  max-width:none;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--radius-sm);
  border:1px solid transparent;
  color:var(--text);font-size:15px;font-weight:600;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),color .2s var(--ease);
}
.nav-num{font-family:var(--font-accent);font-size:12px;letter-spacing:.08em;color:var(--muted);min-width:22px;font-variant-numeric:tabular-nums}
.nav-link:hover{background:rgba(30,27,46,.8);border-color:var(--line);transform:translateX(3px);color:#fff}
.nav-link[aria-current="page"]{
  background:linear-gradient(90deg,rgba(201,162,39,.22),rgba(201,162,39,.02));
  border-color:rgba(201,162,39,.55);
  color:#fff;transform:translateX(4px);
}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:-1px;top:50%;
  width:3px;height:20px;margin-top:-10px;border-radius:0 3px 3px 0;
  background:var(--gold-hi);
}
.nav-link[aria-current="page"] .nav-num{color:var(--gold-hi)}
.nav-link[aria-current="page"] .nav-label{
  text-decoration:underline;
  text-decoration-color:var(--gold-hi);
  text-decoration-thickness:2px;
  text-underline-offset:6px;
}
.nav-actions{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:10px;
}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 18px;border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-family:var(--font-head);font-size:14px;font-weight:700;letter-spacing:.02em;
  text-align:center;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-gold{background:linear-gradient(135deg,var(--gold-hi),var(--gold));color:#17130A;box-shadow:0 16px 34px -18px rgba(201,162,39,1)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 20px 40px -16px rgba(242,208,107,.9)}
.btn-ghost{background:rgba(30,27,46,.62);color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:rgba(242,208,107,.55);color:#fff;transform:translateY(-2px)}
.btn-cyan{background:rgba(52,224,224,.12);color:var(--cyan);border-color:rgba(52,224,224,.5)}
.btn-cyan:hover{background:rgba(52,224,224,.2);transform:translateY(-2px)}
.btn-violet{background:rgba(122,75,255,.16);color:#C9B6FF;border-color:rgba(122,75,255,.5)}
.btn-violet:hover{background:rgba(122,75,255,.26);transform:translateY(-2px)}

/* ---------- 9. 页脚 ---------- */
.site-foot{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(20,18,31,.92),rgba(11,10,18,1));
  overflow:hidden;
}
.site-foot::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(242,208,107,.8),transparent);
}
.foot-glow{
  position:absolute;left:-12%;bottom:-46%;width:62%;height:280px;
  background:radial-gradient(closest-side,rgba(201,162,39,.22),transparent);
  pointer-events:none;
}
.foot-inner{
  position:relative;z-index:1;
  max-width:var(--content-max);margin:0 auto;
  padding:clamp(38px,6vw,68px) var(--gutter) 26px;
  display:grid;gap:clamp(26px,4vw,44px);
}
.foot-tagline{font-family:var(--font-accent);font-size:13px;color:var(--muted);letter-spacing:.14em;margin-top:16px;max-width:none}
.foot-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 18px}
.foot-col-title{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-head);font-size:12.5px;font-weight:700;
  letter-spacing:.16em;color:var(--gold-hi);margin-bottom:12px;
}
.foot-col-title::before{content:"";width:14px;height:2px;border-radius:2px;background:var(--gold)}
.foot-col ul{display:grid;gap:9px}
.foot-col a{font-size:14px;color:var(--text);opacity:.86;transition:color .2s var(--ease),opacity .2s var(--ease),padding-left .2s var(--ease)}
.foot-col a:hover{color:var(--gold-hi);opacity:1;padding-left:3px}
.foot-contact{
  display:grid;gap:10px;
  padding:18px 20px;
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(30,27,46,.55);
}
.foot-contact-item{display:flex;flex-wrap:wrap;gap:10px;font-size:14px;max-width:none}
.foot-key{font-family:var(--font-accent);font-size:12px;letter-spacing:.16em;color:var(--muted);min-width:66px}
.foot-val{color:var(--text);font-variant-numeric:tabular-nums}
.foot-base{
  position:relative;z-index:1;
  max-width:var(--content-max);margin:0 auto;
  padding:18px var(--gutter) 30px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
}
.foot-copy,.foot-legal{max-width:none}

/* ---------- 10. 页面容器 / 章节 ---------- */
.content{width:100%;max-width:var(--content-max);margin:0 auto;padding:0 var(--gutter)}
.section{padding:clamp(44px,6.5vw,92px) 0}
.section-head{display:grid;gap:10px;margin-bottom:clamp(22px,3vw,38px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-accent);font-size:12.5px;letter-spacing:.2em;
  color:var(--muted);
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--gold);flex:0 0 24px}
.section-num{
  font-family:var(--font-accent);
  font-size:clamp(40px,7vw,76px);
  line-height:1;
  color:var(--gold);
  opacity:.92;
  font-variant-numeric:tabular-nums;
  font-weight:600;
}
.section-title{font-size:clamp(24px,3.2vw,34px)}
.lead{font-size:clamp(15.5px,1.6vw,18px);color:var(--text);opacity:.92;max-width:64ch}
.rule{height:1px;border:0;background:linear-gradient(90deg,var(--line),transparent)}

/* 面包屑 */
.breadcrumb{padding-top:clamp(22px,3vw,34px)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumb li{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
.breadcrumb li + li::before{content:"/";color:var(--line)}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--gold-hi)}

/* ---------- 11. 卡片 / 标签 / 数值 ---------- */
.glass-card{
  background:rgba(30,27,46,.55);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(18px,2.4vw,24px);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.glass-card:hover{transform:translateY(-4px);border-color:rgba(242,208,107,.5);box-shadow:var(--shadow)}
.solid-card{
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(20px,2.6vw,28px);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.solid-card:hover{transform:translateY(-4px);border-color:rgba(242,208,107,.45)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-family:var(--font-head);font-size:11.5px;font-weight:700;letter-spacing:.1em;
  white-space:nowrap;
}
.tag-gold{color:var(--gold-hi);background:rgba(201,162,39,.14);border:1px solid rgba(201,162,39,.45)}
.tag-violet{color:#C9B6FF;background:rgba(122,75,255,.16);border:1px solid rgba(122,75,255,.45)}
.tag-cyan{color:var(--cyan);background:rgba(52,224,224,.12);border:1px solid rgba(52,224,224,.4)}
.exhibit{
  display:flex;align-items:baseline;gap:10px;
  font-family:var(--font-accent);font-size:13px;color:var(--muted);letter-spacing:.08em;
}
.exhibit::before{content:"";flex:0 0 22px;width:22px;height:1px;background:var(--gold);transform:translateY(-4px)}
.stat{display:grid;gap:4px}
.stat-num{
  font-family:var(--font-head);font-weight:800;line-height:1.1;
  font-size:clamp(26px,3.4vw,38px);color:var(--gold-hi);
  font-variant-numeric:tabular-nums;
}
.stat-label{font-size:13px;color:var(--muted);letter-spacing:.06em}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-head);font-size:14px;font-weight:700;color:var(--gold-hi);
}
.link-more::after{content:"→";transition:transform .2s var(--ease)}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- 12. 图片容器（响应式基础） ---------- */
.figure{margin:0;display:grid;gap:10px}
.figure-media{
  position:relative;width:100%;aspect-ratio:16/10;
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);
  background:
    radial-gradient(420px 260px at 78% 10%,rgba(201,162,39,.34),transparent 68%),
    radial-gradient(360px 240px at 12% 92%,rgba(52,224,224,.16),transparent 70%),
    linear-gradient(140deg,rgba(30,27,46,.96),rgba(11,10,18,.94));
}
.figure-media > img{width:100%;height:100%;object-fit:cover}
.figure-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 52%,rgba(11,10,18,.55));
}
.figure-caption{font-family:var(--font-accent);font-size:13px;color:var(--muted);letter-spacing:.04em}
.figure--wide .figure-media{aspect-ratio:21/9}
.figure--tall .figure-media{aspect-ratio:4/5}
.figure--square .figure-media{aspect-ratio:1/1}

/* ---------- 13. 对比表 ---------- */
.table-scroll{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--ink-2);
  -webkit-overflow-scrolling:touch;
}
.cmp-table{min-width:640px;font-size:14px}
.cmp-table th,.cmp-table td{padding:13px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.cmp-table thead th{
  background:rgba(30,27,46,.92);color:#fff;
  font-family:var(--font-head);font-size:12.5px;font-weight:700;letter-spacing:.1em;
  white-space:nowrap;
}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:nth-child(even){background:rgba(30,27,46,.34)}
.cmp-table .is-highlight{background:rgba(52,224,224,.09);box-shadow:inset 2px 0 0 var(--cyan)}
.cmp-table .is-highlight th{color:var(--cyan)}
.cmp-table .num{font-variant-numeric:tabular-nums}

/* ---------- 14. 步骤流 ---------- */
.step-list{display:grid;gap:14px;counter-reset:step}
.step{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;
  padding:16px 18px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:rgba(30,27,46,.45);
}
.step-num{
  font-family:var(--font-accent);font-size:20px;line-height:1.3;
  color:var(--gold-hi);font-variant-numeric:tabular-nums;
}
.step-body{display:grid;gap:6px}
.step-body p{font-size:14.5px;color:var(--muted);max-width:60ch}

/* ---------- 15. 折叠面板 ---------- */
.panel{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--ink-2);overflow:hidden;
  transition:border-color .2s var(--ease);
}
.panel + .panel{margin-top:10px}
.panel[data-open]{border-color:rgba(201,162,39,.5)}
.panel-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;text-align:left;
  font-family:var(--font-head);font-size:16px;font-weight:700;color:var(--text);
  transition:color .2s var(--ease);
}
.panel-trigger:hover{color:var(--gold-hi)}
.panel-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.panel-icon::before,.panel-icon::after{
  content:"";position:absolute;background:var(--gold-hi);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.panel-icon::before{left:0;top:8px;width:18px;height:2px}
.panel-icon::after{left:8px;top:0;width:2px;height:18px}
.panel-trigger[aria-expanded="true"] .panel-icon::after{transform:rotate(90deg);opacity:0}
.panel-body{padding:0 18px 18px;color:var(--muted);font-size:15px}
.panel-body > * + *{margin-top:10px}

/* ---------- 16. 网格工具 ---------- */
.grid-2,.grid-3{display:grid;gap:clamp(14px,2vw,22px)}

/* ---------- 17. 显现动画 ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 18. 响应式 ---------- */
@media (min-width:600px){
  .foot-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:900px){
  .foot-inner{grid-template-columns:minmax(0,1fr) minmax(0,1.7fr)}
  .foot-brand{grid-column:1}
  .foot-cols{grid-column:2}
  .foot-contact{grid-column:1 / -1}
  .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:619px){
  .brand-line{display:none}
  .brand-mark{flex:0 0 34px;width:34px;height:34px}
}

@media (min-width:1080px){
  body{padding-left:var(--rail-w)}
  .site-rail{
    top:0;bottom:0;right:auto;left:0;width:var(--rail-w);
    border-bottom:0;border-right:1px solid var(--line);
  }
  .scroll-progress{left:var(--rail-w)}
  .rail-inner{
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    height:100%;padding:26px 22px 22px;gap:22px;
    overflow-y:auto;
  }
  .rail-head{flex:0 0 auto;flex-direction:column;align-items:flex-start;gap:0;padding-bottom:20px;border-bottom:1px solid var(--line)}
  .rail-toggle{display:none}
  .rail-scrim{display:none}
  .site-nav{
    position:static;width:auto;height:auto;
    transform:none;visibility:visible;
    background:none;border:0;box-shadow:none;
    padding:0;overflow:visible;
    display:flex;flex-direction:column;gap:16px;flex:1 1 auto;
  }
  .nav-list{gap:3px}
  .nav-link{padding:11px 12px}
}

/* ---------- 19. 滚动锁与动效偏好 ---------- */
@media (max-width:1079px){
  html.nav-open,html.nav-open body{overflow:hidden}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .nav-link:hover,.nav-link[aria-current="page"],.glass-card:hover,.solid-card:hover{transform:none}
}