/* ============================================================
   百利娱乐游艺 · 共享样式 /assets/site.css
   顺序：变量 → Reset → 基础排版 → 页头轨道 → 页脚仪表盘
        → 通用组件 → 响应式 → 无障碍
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --paper:#F4EFE6;
  --paper-lite:#FBF6EC;
  --ink:#0E1B2A;
  --red:#D8262C;
  --red-deep:#A81A20;
  --gold:#E8B04B;
  --cyan:#2CE6D4;
  --violet:#8B5CF6;
  --mist:#C9C2B6;
  --night:#050A12;

  --line:rgba(14,27,42,.14);
  --line-soft:rgba(14,27,42,.08);
  --line-invert:rgba(244,239,230,.16);

  --rail-w:236px;
  --top-h:62px;
  --maxw:1180px;
  --gutter:clamp(16px,4vw,40px);

  --font-head:"Barlow Condensed","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun","PingFang SC",serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,picture{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit}
table{border-collapse:collapse;width:100%}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--paper);
  background-image:
    linear-gradient(to right,rgba(14,27,42,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(14,27,42,.045) 1px,transparent 1px);
  background-size:72px 72px;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
}
::selection{background:var(--gold);color:var(--night)}

h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.06;letter-spacing:.005em;color:var(--ink)}
h1{font-size:clamp(38px,5vw,68px);margin:0 0 .35em}
h2{font-size:clamp(27px,3.4vw,44px);margin:0 0 .4em}
h3{font-size:clamp(19px,2vw,26px);margin:0 0 .45em}
h4{font-size:clamp(17px,1.5vw,20px);margin:0 0 .5em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
strong,b{font-weight:700}
small{font-size:.82em}

.mono{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  font-variant-numeric:tabular-nums;
}
.note{font-size:14px;line-height:1.7;color:rgba(14,27,42,.62)}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

#main-content{display:block;min-height:46vh}

/* ---------- 4. 焦点与跳转 ---------- */
:focus-visible{outline:2px solid var(--red);outline-offset:3px;border-radius:2px}
.site-header :focus-visible,
.site-footer :focus-visible{outline-color:var(--cyan)}

.skip-link{
  position:fixed;left:14px;top:14px;z-index:999;
  transform:translateY(-260%);
  padding:10px 18px;border-radius:2px;
  background:var(--gold);color:var(--night);
  font-family:var(--font-head);font-weight:700;font-size:15px;letter-spacing:.1em;
  text-decoration:none;
  box-shadow:0 12px 28px -14px rgba(5,10,18,.7);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 5. 侧边轨道页头 ---------- */
.site-header{
  position:fixed;
  inset:0 auto 0 0;
  z-index:60;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  gap:16px;
  padding:20px 14px 18px;
  color:var(--paper);
  background-color:var(--ink);
  background-image:linear-gradient(180deg,#13253A 0%,var(--ink) 46%,#0A1522 100%);
  border-right:1px solid rgba(232,176,75,.32);
  overflow:hidden;
}
.site-header::after{
  content:"";position:absolute;top:0;bottom:0;right:0;width:1px;
  background:repeating-linear-gradient(180deg,rgba(232,176,75,.55) 0 8px,transparent 8px 16px);
  opacity:.5;pointer-events:none;
}

/* 品牌 */
.rail-brand{padding:0 6px 16px;border-bottom:1px solid var(--line-invert)}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:inherit;min-width:0}
.brand__mark{
  flex:0 0 auto;width:36px;height:36px;display:grid;place-items:center;
  background:var(--red);color:#fff;border-radius:2px;
  font-family:var(--font-head);font-weight:800;font-size:19px;line-height:1;
  box-shadow:0 0 0 1px rgba(232,176,75,.75),0 8px 20px -10px rgba(216,38,44,.95);
  transition:box-shadow .22s var(--ease);
}
.brand:hover .brand__mark{box-shadow:0 0 0 1px var(--cyan),0 10px 24px -10px rgba(44,230,212,.9)}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{
  font-family:var(--font-head);font-weight:800;font-size:18px;
  letter-spacing:.06em;line-height:1.15;white-space:nowrap;color:#fff;
}
.brand__sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;
  color:rgba(244,239,230,.5);white-space:nowrap;
}

/* 移动端按钮（桌面隐藏） */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;border:1px solid rgba(232,176,75,.45);border-radius:2px;
  color:var(--paper);
  font-family:var(--font-head);font-weight:700;font-size:14px;letter-spacing:.1em;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle__bars{display:flex;flex-direction:column;gap:3px;width:16px;flex:0 0 auto}
.nav-toggle__bars i{display:block;height:2px;border-radius:1px;background:var(--gold);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i{background:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 导航轨道 */
.site-nav{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;gap:14px;padding-top:2px}
.site-nav__list{display:flex;flex-direction:column;gap:2px;overflow-y:auto;padding-right:2px}
.site-nav__link{
  position:relative;display:flex;align-items:baseline;gap:9px;
  padding:9px 10px 9px 8px;
  border-left:2px solid transparent;border-radius:0 2px 2px 0;
  color:rgba(244,239,230,.76);
  font-family:var(--font-head);font-weight:600;font-size:15.5px;letter-spacing:.05em;
  text-decoration:none;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.site-nav__idx{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;line-height:1;
  color:rgba(232,176,75,.72);flex:0 0 auto;
}
.site-nav__label{min-width:0}
.site-nav__link:hover{background:rgba(44,230,212,.09);color:#fff;border-left-color:var(--cyan)}
.site-nav__link:hover .site-nav__idx{color:var(--cyan)}
.site-nav__link[aria-current="page"]{
  background:linear-gradient(90deg,rgba(216,38,44,.32),rgba(216,38,44,0) 94%);
  color:#fff;border-left-color:var(--red);
}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--gold)}

/* 轨道底部 */
.rail-foot{
  margin-top:auto;display:flex;flex-direction:column;gap:10px;
  padding-top:14px;border-top:1px solid var(--line-invert);
}
.rail-status{
  display:flex;align-items:center;gap:7px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.04em;line-height:1.55;
  color:rgba(244,239,230,.58);
}
.rail-status__dot{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 3px rgba(44,230,212,.18);
  animation:rail-pulse 2.6s ease-in-out infinite;
}
@keyframes rail-pulse{0%,100%{opacity:1}50%{opacity:.32}}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border:1px solid transparent;border-radius:2px;
  font-family:var(--font-head);font-weight:700;font-size:15px;letter-spacing:.1em;
  text-decoration:none;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--block{width:100%}
.btn--red{background:var(--red);color:#fff;border-color:var(--red)}
.btn--red:hover{background:var(--red-deep);border-color:var(--red-deep)}
.btn--gold{background:var(--gold);color:var(--night);border-color:var(--gold)}
.btn--gold:hover{background:#F1C266;border-color:#F1C266}
.btn--ink{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn--ink:hover{background:#1A2F47;border-color:#1A2F47}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(244,239,230,.34)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(44,230,212,.08)}

/* ---------- 7. 页脚仪表盘 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background-color:var(--night);
  background-image:
    linear-gradient(to right,rgba(232,176,75,.06) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(232,176,75,.06) 1px,transparent 1px);
  background-size:56px 56px;
  border-top:3px solid var(--gold);
  color:rgba(244,239,230,.85);
}
.footer-inner{
  width:100%;max-width:var(--maxw);margin-inline:auto;
  padding:clamp(34px,5vw,60px) var(--gutter) 26px;
}
.footer-top{
  display:grid;grid-template-columns:1.5fr .85fr 1.35fr;
  gap:clamp(22px,4vw,52px);
  padding-bottom:30px;border-bottom:1px solid var(--line-invert);
}

.footer-brand{display:flex;align-items:flex-start;gap:13px}
.footer-brand__mark{
  flex:0 0 auto;width:42px;height:42px;display:grid;place-items:center;
  background:var(--red);color:#fff;border-radius:2px;
  font-family:var(--font-head);font-weight:800;font-size:22px;line-height:1;
  box-shadow:0 0 0 1px rgba(232,176,75,.7);
}
.footer-brand__text{min-width:0}
.footer-brand__name{
  font-family:var(--font-head);font-weight:800;font-size:22px;
  letter-spacing:.07em;line-height:1.2;color:#fff;
}
.footer-brand__meta{
  margin-top:5px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.13em;
  color:rgba(244,239,230,.48);
}

.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold);
}
.footer-col__list{display:flex;flex-direction:column;gap:9px}
.footer-col__list a{
  display:inline-block;font-size:15.5px;text-decoration:none;
  color:rgba(244,239,230,.8);border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-col__list a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.footer-col--contact .btn{margin-top:16px}
.footer-contact__list{display:flex;flex-direction:column;gap:12px}
.footer-contact__item{display:grid;grid-template-columns:58px 1fr;gap:10px;align-items:baseline}
.footer-contact__k{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;color:rgba(232,176,75,.85)}
.footer-contact__v{font-size:15px;line-height:1.6;color:rgba(244,239,230,.9);word-break:break-word}

/* 仪表盘 */
.footer-dash{
  margin-top:24px;
  border:1px solid rgba(232,176,75,.28);border-radius:3px;
  background:rgba(244,239,230,.03);overflow:hidden;
}
.dash-toggle{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:15px 18px;text-align:left;color:#fff;
  transition:background .18s var(--ease);
}
.dash-toggle:hover{background:rgba(139,92,246,.14)}
.dash-toggle[aria-expanded="true"]{background:rgba(139,92,246,.2)}
.dash-toggle__left{display:block;min-width:0}
.dash-toggle__label{
  display:block;font-family:var(--font-head);font-weight:700;
  font-size:17px;letter-spacing:.1em;color:#fff;
}
.dash-toggle__hint{
  display:block;margin-top:3px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  color:rgba(244,239,230,.5);
}
.dash-toggle__sign{
  position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid rgba(232,176,75,.6);
  transition:border-color .2s var(--ease);
}
.dash-toggle__sign::before,
.dash-toggle__sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--gold);
  transform:translate(-50%,-50%);
}
.dash-toggle__sign::before{width:10px;height:1.5px}
.dash-toggle__sign::after{width:1.5px;height:10px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.dash-toggle[aria-expanded="true"] .dash-toggle__sign{border-color:var(--violet)}
.dash-toggle[aria-expanded="true"] .dash-toggle__sign::before,
.dash-toggle[aria-expanded="true"] .dash-toggle__sign::after{background:var(--violet)}
.dash-toggle[aria-expanded="true"] .dash-toggle__sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}

.dash-panel{
  max-height:0;opacity:0;visibility:hidden;overflow:hidden;
  transition:max-height .34s var(--ease),opacity .24s var(--ease),visibility .34s;
}
.dash-panel[data-open]{max-height:900px;opacity:1;visibility:visible}
.dash-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;
  background:rgba(232,176,75,.2);
  border-top:1px solid rgba(232,176,75,.28);
}
.dash-cell{background:#0A1522;padding:16px 18px}
.dash-cell--wide{grid-column:1/-1}
.dash-cell__k{
  margin-bottom:6px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;
  color:var(--violet);
}
.dash-cell__v{font-size:15px;line-height:1.6;color:rgba(244,239,230,.92);word-break:break-word}

/* 页脚底栏 */
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 22px;margin-top:26px;padding-top:18px;
  border-top:1px solid var(--line-invert);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:rgba(244,239,230,.5);
}
.footer-base__legal{margin:0}
.footer-base__links{display:flex;flex-wrap:wrap;gap:8px 18px}
.footer-base__links a{
  color:rgba(244,239,230,.72);text-decoration:none;
  border-bottom:1px solid rgba(244,239,230,.25);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-base__links a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ---------- 8. 通用组件 ---------- */
.container{
  width:100%;max-width:var(--maxw);margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--wide{max-width:1400px}
.section{padding-block:clamp(40px,6vw,80px)}
.section--tight{padding-block:clamp(24px,3vw,40px)}

.grid{display:grid;gap:var(--grid-gap,24px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

.stack{display:flex;flex-direction:column;gap:var(--stack-gap,14px)}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}

.panel{
  position:relative;
  padding:clamp(18px,2.6vw,30px);
  background:var(--paper-lite);
  border-top:3px solid var(--ink);
}
.panel--ink{background:var(--ink);color:var(--paper);border-top-color:var(--gold)}
.panel--ink h2,.panel--ink h3,.panel--ink h4{color:#fff}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  margin-bottom:12px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--red);
}
.eyebrow::before{content:"";display:block;width:22px;height:2px;background:var(--red)}
.panel--ink .eyebrow,
.site-footer .eyebrow{color:var(--gold)}
.panel--ink .eyebrow::before,
.site-footer .eyebrow::before{background:var(--gold)}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:rgba(14,27,42,.55);
}
.breadcrumb a{
  color:rgba(14,27,42,.78);text-decoration:none;
  border-bottom:1px solid var(--mist);padding-bottom:1px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.breadcrumb a:hover{color:var(--red);border-bottom-color:var(--red)}
.breadcrumb__sep{color:var(--mist)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  border:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:rgba(14,27,42,.7);
}
.tag--red{border-color:rgba(216,38,44,.45);color:var(--red)}
.tag--gold{border-color:rgba(232,176,75,.6);color:#8A6415}
.tag--cyan{border-color:rgba(44,230,212,.55);color:#0D7C73}
.tag--violet{border-color:rgba(139,92,246,.5);color:#6D3FE0}

/* 响应式图片容器（页面阶段放置图片） */
.frame-media{
  position:relative;display:block;width:100%;overflow:hidden;
  aspect-ratio:16/10;
  background:var(--ink);
  border:1px solid var(--line);
}
.frame-media img,
.frame-media picture>img{width:100%;height:100%;object-fit:cover}
.frame-media--wide{aspect-ratio:21/9}
.frame-media--square{aspect-ratio:1/1}
.frame-media--tall{aspect-ratio:3/4}
.frame-media::after{
  content:"";position:absolute;inset:9px;pointer-events:none;
  border:1px solid rgba(232,176,75,.45);
  border-right-color:transparent;
  border-bottom-color:transparent;
}

/* ---------- 9. 滚动进度条 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;z-index:90;
  width:100%;height:3px;pointer-events:none;
  transform:scaleX(var(--progress,0));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--red) 0%,var(--gold) 52%,var(--cyan) 100%);
  box-shadow:0 0 12px -2px rgba(232,176,75,.75);
}
@media (min-width:1024px){
  .scroll-progress{left:var(--rail-w);width:calc(100% - var(--rail-w))}
}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1023px){
  body{font-size:16px;padding-left:0}

  .site-header{
    position:sticky;top:0;
    inset:auto;
    width:100%;height:auto;
    flex-direction:row;align-items:center;justify-content:space-between;
    gap:10px;padding:9px 14px;
    border-right:0;border-bottom:1px solid rgba(232,176,75,.4);
    overflow:visible;
  }
  .site-header::after{display:none}
  .rail-brand{padding:0;border-bottom:0;min-width:0}
  .brand__mark{width:32px;height:32px;font-size:17px}
  .brand__name{font-size:16px}
  .brand__sub{display:none}
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    max-height:calc(100vh - var(--top-h));
    overflow-y:auto;
    padding:14px 14px 22px;
    background-color:var(--night);
    background-image:linear-gradient(180deg,#0A1522,#050A12);
    border-bottom:2px solid var(--gold);
    box-shadow:0 28px 54px -24px rgba(5,10,18,.8);
    opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .site-nav__list{overflow:visible;gap:0;padding-right:0}
  .site-nav__link{
    font-size:17px;padding:13px 10px;
    border-left:3px solid transparent;
    border-bottom:1px solid rgba(244,239,230,.08);
  }
  .rail-foot{margin-top:12px;padding-top:16px}
  .rail-status{font-size:11px}
}

@media (max-width:900px){
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:640px){
  .dash-grid{grid-template-columns:minmax(0,1fr)}
  .footer-base{flex-direction:column;align-items:flex-start}
}

@media (max-width:560px){
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-brand{grid-column:auto}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .panel{padding:18px 16px}
}

/* ---------- 11. 无障碍：减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .rail-status__dot{opacity:1}
  .scroll-progress{box-shadow:none}
}