/* ==========================================================
   星投 XBET 官方中国站 · 共享样式 /assets/site.css
   轨道导航 + 堆叠面板 + 印刷标签 的夜间数据舱体系
   ========================================================== */

:root{
  --ink-deep:#0A1626;
  --ink-panel:#12233D;
  --rail-line:#2E4A63;
  --gold:#F2B441;
  --gold-high:#FFD98A;
  --warm-white:#F6F3EC;
  --paper:#E7E1D4;
  --blue-link:#6F9BD1;
  --signal-red:#E2554B;
  --ink-black:#050B14;

  --rail-width:264px;
  --content-max:1200px;

  --font-head:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --line-soft:rgba(46,74,99,.72);
  --line-faint:rgba(46,74,99,.4);
  --text-dim:rgba(246,243,236,.62);
  --text-soft:rgba(246,243,236,.84);
  --ease-out:cubic-bezier(.22,.7,.3,1);
  --progress:0;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:92px}
body{
  margin:0;
  background:var(--ink-deep);
  color:var(--warm-white);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0}
button{font:inherit}
main{display:block}

/* ---------- 中文排版 ---------- */
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;color:var(--warm-white);margin:0 0 .6em;line-height:1.28;letter-spacing:-.02em}
h1{font-size:clamp(34px,5.2vw,56px);line-height:1.14;letter-spacing:-.03em}
h2{font-size:clamp(26px,3.4vw,34px);letter-spacing:-.025em}
h3{font-size:clamp(19px,2.2vw,24px)}
h4{font-size:17px}
p{margin:0 0 1.2em}
a{color:inherit}
strong{font-weight:800}
.mono{font-family:var(--font-mono);font-size:.9em;letter-spacing:.02em}
.meta{font-size:12.5px;color:var(--text-dim);letter-spacing:.02em}
.lede{font-size:clamp(17px,1.6vw,19.5px);line-height:1.95;color:var(--text-soft);max-width:62ch}

:focus-visible{outline:2px solid var(--gold-high);outline-offset:3px;border-radius:2px}
#main-content:focus{outline:none}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;left:14px;top:-70px;z-index:200;
  padding:10px 18px;background:var(--gold);color:var(--ink-black);
  font-weight:800;font-size:14px;text-decoration:none;
  border:1px solid var(--gold-high);
  transition:top .2s var(--ease-out);
}
.skip-link:focus{top:14px}

/* ---------- 头部轨道 ---------- */
.site-header{
  position:fixed;inset:0 auto 0 0;
  width:var(--rail-width);z-index:80;
}
.header-rail{
  position:relative;height:100%;
  display:flex;flex-direction:column;gap:clamp(14px,2.6vh,26px);
  padding:26px 20px 22px;
  background:linear-gradient(180deg,#0C1A2C 0%,#0A1626 46%,#081120 100%);
  border-right:1px solid var(--line-soft);
  overflow:hidden;
}
.header-rail::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.85;
  background-image:
    radial-gradient(1.6px 1.6px at 20% 11%,rgba(246,243,236,.5),transparent 62%),
    radial-gradient(1.6px 1.6px at 76% 24%,rgba(242,180,65,.55),transparent 62%),
    radial-gradient(1.4px 1.4px at 38% 47%,rgba(111,155,209,.5),transparent 62%),
    radial-gradient(1.4px 1.4px at 66% 68%,rgba(246,243,236,.38),transparent 62%),
    radial-gradient(1.2px 1.2px at 28% 86%,rgba(111,155,209,.4),transparent 62%);
}
.header-rail > *{position:relative;z-index:1}

.brand-block{display:flex;flex-direction:column;gap:14px}
.brand-mark{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
.brand-glyph{
  position:relative;flex:0 0 auto;width:38px;height:38px;border-radius:50%;
  border:1px solid var(--rail-line);background:rgba(18,35,61,.7);
}
.glyph-orbit{position:absolute;inset:6px;border-radius:50%;border:1px dashed rgba(242,180,65,.62)}
.glyph-node{
  position:absolute;top:-3px;left:50%;width:7px;height:7px;margin-left:-3.5px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 0 3px rgba(242,180,65,.18);
}
.brand-text{display:block;min-width:0}
.brand-name{display:block;font-size:15.5px;font-weight:800;letter-spacing:-.01em;line-height:1.4;color:var(--warm-white)}
.brand-tag{display:block;font-size:12px;line-height:1.5;color:var(--text-dim);letter-spacing:.02em}

.version-chip{
  align-self:flex-start;display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;background:var(--paper);color:var(--ink-black);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.02em;
  border:1px solid rgba(5,11,20,.16);
}
.chip-dot{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 3px rgba(242,180,65,.28)}

/* 导航按钮（移动） */
.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;background:rgba(18,35,61,.6);
  border:1px solid var(--rail-line);color:var(--warm-white);
  font-size:14px;font-weight:700;cursor:pointer;
  transition:border-color .2s var(--ease-out),color .2s var(--ease-out);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-high)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle-bars span{display:block;height:2px;background:var(--gold);transition:transform .2s var(--ease-out),opacity .2s var(--ease-out)}
.site-header[data-open] .nav-toggle-bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 导航主体 */
.site-nav{display:flex;flex-direction:column;gap:14px;flex:1 1 auto;min-height:0;overflow-y:auto}
.nav-caption{margin:0;font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:rgba(246,243,236,.45)}
.nav-list{list-style:none;position:relative;display:flex;flex-direction:column;gap:2px}
.nav-list::before{
  content:"";position:absolute;left:15px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(46,74,99,0),rgba(46,74,99,.95),rgba(46,74,99,0));
}
.nav-item{list-style:none}
.nav-link{
  position:relative;display:flex;align-items:baseline;gap:12px;
  padding:9px 12px 9px 26px;text-decoration:none;
  color:var(--text-soft);font-size:15.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:color .2s var(--ease-out),background-color .2s var(--ease-out),border-color .2s var(--ease-out),transform .2s var(--ease-out);
}
.nav-link::before{
  content:"";position:absolute;left:12px;top:50%;width:7px;height:7px;margin-top:-3.5px;
  border-radius:50%;background:#0A1626;border:1px solid var(--rail-line);
  transition:background-color .2s var(--ease-out),border-color .2s var(--ease-out),box-shadow .2s var(--ease-out);
}
.nav-link:hover{color:var(--warm-white);background:rgba(46,74,99,.3);transform:translateX(2px)}
.nav-link:hover::before{border-color:var(--gold);background:rgba(242,180,65,.45)}
.nav-link[aria-current="page"]{
  color:var(--gold-high);background:rgba(242,180,65,.14);
  border-color:rgba(242,180,65,.55);
}
.nav-link[aria-current="page"]::before{
  background:var(--gold);border-color:var(--gold-high);
  box-shadow:0 0 0 4px rgba(242,180,65,.18);
}
.nav-index{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:rgba(242,180,65,.78)}
.nav-label{flex:1 1 auto;min-width:0}
.nav-cta{
  display:flex;align-items:center;justify-content:center;
  padding:13px 18px;background:var(--gold);color:var(--ink-black);
  border:1px solid var(--gold-high);font-weight:800;font-size:15px;letter-spacing:.02em;text-decoration:none;
  transition:background-color .2s var(--ease-out),transform .2s var(--ease-out);
}
.nav-cta:hover{background:var(--gold-high);transform:translateY(-1px)}

/* 滚动进度轨 */
.rail-progress{position:absolute;top:0;bottom:0;right:-1px;width:2px;background:rgba(46,74,99,.5)}
.rail-progress-bar{
  display:block;width:100%;height:100%;
  background:linear-gradient(180deg,var(--gold),var(--gold-high));
  transform:scaleY(var(--progress));transform-origin:top center;
  transition:transform .12s linear;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:clamp(48px,8vw,96px);
  padding:clamp(36px,6vw,64px) 0 22px;
  background:#050B14;color:var(--text-dim);
  border-top:1px solid var(--line-soft);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(242,180,65,.7),rgba(111,155,209,.5),transparent);
}
.footer-inner{width:100%;max-width:var(--content-max);margin:0 auto;padding:0 clamp(20px,4vw,56px)}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));
  gap:clamp(22px,3vw,40px);
}
.footer-brand{min-width:0}
.footer-brand-name{margin:0 0 6px;font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--warm-white)}
.footer-tagline{margin:0 0 12px;font-size:13.5px;color:var(--text-dim)}
.footer-note{margin:0;max-width:34ch;font-size:13px;line-height:1.85;color:rgba(246,243,236,.55)}
.footer-group{min-width:0}
.footer-group-title{
  margin:0 0 12px;font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.2em;text-transform:uppercase;color:var(--gold);font-weight:700;
}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:9px}
.footer-link{
  display:inline-block;font-size:14px;color:rgba(246,243,236,.78);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease-out),border-color .2s var(--ease-out);
}
.footer-link:hover{color:var(--gold-high);border-bottom-color:rgba(242,180,65,.6)}

.footer-contact{
  display:grid;grid-template-columns:auto minmax(0,1fr);
  gap:clamp(16px,3vw,44px);align-items:start;
  margin-top:clamp(28px,4vw,44px);padding-top:clamp(20px,3vw,28px);
  border-top:1px dashed var(--line-soft);
}
.footer-contact-body{min-width:0}
.contact-line,.address-line,.record-line{margin:0 0 8px;font-size:13.5px;line-height:1.85;color:rgba(246,243,236,.72)}
.record-line{font-family:var(--font-mono);font-size:12.5px;color:rgba(246,243,236,.52);margin-bottom:0}

.footer-band{
  display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;justify-content:space-between;
  margin-top:clamp(24px,4vw,36px);padding-top:18px;
  border-top:1px solid rgba(46,74,99,.5);
}
.footer-copy{margin:0;font-family:var(--font-mono);font-size:12px;color:rgba(246,243,236,.5)}
.footer-band-links{display:flex;flex-wrap:wrap;gap:18px}

/* ---------- 通用布局 ---------- */
.canvas{width:100%;max-width:var(--content-max);margin:0 auto;padding:0 clamp(20px,4vw,56px)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:1/-1}
.orbit-line{
  height:1px;border:0;margin:clamp(28px,5vw,64px) 0;
  background:linear-gradient(90deg,rgba(46,74,99,0),rgba(242,180,65,.55),rgba(46,74,99,0));
}
.section-head{display:flex;flex-direction:column;gap:10px;margin-bottom:clamp(18px,3vw,38px)}
.section-kicker{
  margin:0;font-family:var(--font-mono);font-size:12.5px;
  letter-spacing:.2em;text-transform:uppercase;color:var(--gold);
}

/* ---------- 堆叠面板与印刷标签 ---------- */
.panel{
  position:relative;padding:clamp(20px,3vw,36px);
  background:var(--ink-panel);border:1px solid var(--line-soft);
  box-shadow:0 18px 40px -32px rgba(5,11,20,.95);
}
.panel::after{
  content:"";position:absolute;inset:6px;pointer-events:none;
  border:1px solid rgba(231,225,212,.09);
}
.panel-stack{display:flex;flex-direction:column;gap:clamp(18px,2.6vw,30px)}
.panel-label{
  position:absolute;top:-11px;left:18px;
  padding:3px 10px;background:var(--paper);color:var(--ink-black);
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;letter-spacing:.12em;
}
.label{
  display:inline-block;padding:4px 11px;background:var(--paper);color:var(--ink-black);
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;letter-spacing:.14em;
}
.label-gold{background:var(--gold);color:var(--ink-black)}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:3px 9px;
  background:rgba(18,35,61,.75);border:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11.5px;color:rgba(246,243,236,.72);
}
.tag-gold{border-color:rgba(242,180,65,.6);color:var(--gold-high)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;font-size:15px;font-weight:700;letter-spacing:.02em;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s var(--ease-out),color .2s var(--ease-out),border-color .2s var(--ease-out),transform .2s var(--ease-out);
}
.btn-primary{background:var(--gold);color:var(--ink-black);border-color:var(--gold-high)}
.btn-primary:hover{background:var(--gold-high);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--warm-white);border-color:var(--rail-line)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-high);transform:translateY(-1px)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 面包屑与正文 ---------- */
.breadcrumbs{font-size:13px;color:var(--text-dim)}
.breadcrumb-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.breadcrumb-list li{display:flex;align-items:center;gap:8px}
.breadcrumb-list li+li::before{content:"/";color:var(--rail-line)}
.breadcrumb-link{color:var(--blue-link);text-decoration:none}
.breadcrumb-link:hover{text-decoration:underline;text-underline-offset:3px}

.prose{max-width:68ch;font-size:17px;line-height:1.9;color:var(--text-soft)}
.prose p{margin:0 0 1.2em}
.prose a{color:var(--blue-link);text-decoration:underline;text-underline-offset:3px}
.prose h2,.prose h3{margin-top:1.6em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.3em}
.prose li{margin-bottom:.5em}

/* ---------- 图片容器 ---------- */
.figure{margin:0}
.figure-media{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(140deg,#12233D 0%,#0A1626 58%,#050B14 100%);
  border:1px solid var(--line-soft);
}
.figure-media img{width:100%;height:100%;object-fit:cover}
.figure-media--wide{aspect-ratio:21/9}
.figure-media--tall{aspect-ratio:3/4}
.figure-placeholder{
  position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(0deg,rgba(46,74,99,.35) 0 1px,transparent 1px 46px),
    repeating-linear-gradient(90deg,rgba(46,74,99,.35) 0 1px,transparent 1px 46px),
    radial-gradient(140px 140px at 74% 28%,rgba(242,180,65,.18),transparent 68%);
}
.figure-caption{margin-top:10px;font-size:12.5px;color:var(--text-dim);letter-spacing:.02em}

/* ---------- 标签页 ---------- */
.tabs{display:flex;flex-direction:column;gap:20px}
.tab-list{
  display:flex;flex-wrap:wrap;gap:8px;
  padding-bottom:10px;border-bottom:1px solid var(--line-soft);
}
.tab{
  appearance:none;background:transparent;border:1px solid transparent;
  padding:8px 15px;color:rgba(246,243,236,.72);
  font-size:14.5px;font-weight:700;letter-spacing:.02em;cursor:pointer;
  transition:background-color .2s var(--ease-out),color .2s var(--ease-out),border-color .2s var(--ease-out);
}
.tab:hover{color:var(--gold-high);background:rgba(46,74,99,.32)}
.tab[aria-selected="true"]{background:var(--gold);color:var(--ink-black);border-color:var(--gold-high)}
.tab-panel{padding:clamp(14px,2vw,22px) 0;color:var(--text-soft)}
.tab-panel[hidden]{display:none}

/* ---------- 显现动效 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .32s var(--ease-out),transform .32s var(--ease-out);
  transition-delay:var(--reveal-delay,0s);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 平板 / 手机 ---------- */
@media (min-width:1080px){
  body{padding-left:var(--rail-width)}
}

@media (max-width:1079px){
  html{scroll-padding-top:78px}
  .site-header{position:sticky;top:0;left:auto;width:100%;height:auto;inset:auto}
  .header-rail{
    flex-direction:row;align-items:center;flex-wrap:wrap;
    height:auto;gap:12px;padding:12px 18px;overflow:visible;
    border-right:0;border-bottom:1px solid var(--line-soft);
  }
  .brand-block{flex:1 1 auto;flex-direction:row;align-items:center;gap:0;min-width:0}
  .brand-mark{gap:10px}
  .brand-glyph{width:32px;height:32px}
  .brand-name{font-size:14.5px}
  .brand-tag{font-size:11.5px}
  .version-chip{order:3;flex:0 0 auto}
  .nav-toggle{display:inline-flex;order:2}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    max-height:min(78vh,640px);overflow-y:auto;
    padding:18px;gap:14px;
    background:#0A1626;border-bottom:1px solid var(--line-soft);
    box-shadow:0 30px 60px -30px rgba(5,11,20,.95);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .24s var(--ease-out),transform .24s var(--ease-out),visibility .24s var(--ease-out);
  }
  .site-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .nav-list{flex-direction:column}
  .nav-link{padding:12px 14px 12px 28px;font-size:16px}
  .rail-progress{top:auto;left:0;right:0;bottom:0;width:100%;height:2px}
  .rail-progress-bar{transform:scaleX(var(--progress));transform-origin:left center;
    background:linear-gradient(90deg,var(--gold),var(--gold-high))}
  html.is-nav-open body{overflow:hidden}
}

@media (max-width:900px){
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:1/-1}
  .footer-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:719px){
  body{font-size:16px}
  .brand-tag{display:none}
  .version-chip{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-contact{grid-template-columns:1fr;gap:12px}
  .footer-band{flex-direction:column;align-items:flex-start}
  .nav-toggle-label{font-size:13px}
}

/* ---------- 动效降级 ---------- */
@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;transition:none}
  .rail-progress-bar{transition:none}
}