/* ==========================================================================
   亚娱真人中心 — 共享样式表 /assets/site.css
   夜间数字娱乐场：深海蓝基底 · 青柠荧光绿锚点 · 珊瑚橙状态色 · 雾灰紫索引
   ========================================================================== */

/* --- 1. 设计变量 --------------------------------------------------------- */
:root{
  --bg-base:#08182B;
  --bg-panel:#0F2440;
  --bg-deep:#0B1F36;
  --bg-rail:#071322;
  --line:#1B3A5C;
  --lime:#C8FF3D;
  --lime-dim:#2C4416;
  --coral:#FF6B4A;
  --mauve:#8E7FB8;
  --ink:#E9EEF6;
  --muted:#93A6BF;
  --paper:#F4F1EA;

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

  --rail:208px;
  --maxw:1240px;
  --radius:4px;
  --ease:cubic-bezier(.22,1,.36,1);
  --t-fast:200ms;
  --t-mid:260ms;

  --fs-index:12px;
  --fs-body:17px;
  --fs-lead:19px;
  --fs-h4:22px;
  --fs-h3:34px;
  --fs-h2:56px;
  --fs-h1:88px;
}

/* --- 2. Reset 与中文排版 ------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:92px;
}

body{
  margin:0;
  background:var(--bg-base);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:var(--fs-body);
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,video{display:block;max-width:100%}
img{height:auto}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-head);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.12;
  color:var(--ink);
}
h1{font-size:clamp(38px,6.4vw,var(--fs-h1))}
h2{font-size:clamp(28px,4.4vw,var(--fs-h2))}
h3{font-size:clamp(21px,2.8vw,var(--fs-h3))}
h4{font-size:clamp(18px,2vw,var(--fs-h4));letter-spacing:-.01em}
h5,h6{font-size:17px;letter-spacing:-.01em}

p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}

a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
hr{border:0}

:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
  border-radius:2px;
}
::selection{background:var(--lime);color:var(--bg-base)}

.mono{
  font-family:var(--font-mono);
  letter-spacing:.04em;
  font-feature-settings:"tnum" 1;
}

.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* --- 3. 布局工具 -------------------------------------------------------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 18px;
}
@media (min-width:768px){ .container{padding:0 28px} }
@media (min-width:1024px){ .container{padding:0 40px} }

.section{padding:56px 0}
@media (min-width:1024px){ .section{padding:80px 0} }

.grid{display:grid;gap:20px}
.grid--2,.grid--3{grid-template-columns:1fr}
@media (min-width:700px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid{gap:24px}
}

.rule{height:1px;background:var(--line);border:0;margin:0}
.rule--dashed{height:0;background:none;border-top:1px dashed var(--line)}

.data-strip{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:18px 0;
}

/* --- 4. 通用排版件 ------------------------------------------------------ */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mauve);
  margin:0 0 14px;
}
.eyebrow::before{
  content:"";
  width:20px;
  height:1px;
  background:currentColor;
  flex:none;
}

.lead{
  font-size:var(--fs-lead);
  line-height:1.7;
  color:var(--ink);
}

.prose{max-width:68ch}
.prose h2,.prose h3{margin:1.8em 0 .6em}
.prose h2:first-child,.prose h3:first-child{margin-top:0}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.1em}
.prose li{list-style:disc;margin-bottom:.5em}
.prose li::marker{color:var(--lime)}

/* --- 5. 按钮 ------------------------------------------------------------ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1px solid transparent;
  border-radius:3px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.02em;
  text-align:center;
  transition:background-color var(--t-fast) var(--ease),
             color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),
             transform var(--t-fast) var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--block{width:100%}

.btn--lime{background:var(--lime);color:var(--bg-base);border-color:var(--lime)}
.btn--lime:hover,.btn--lime:focus-visible{background:var(--lime-dim);color:var(--lime);border-color:var(--lime)}

.btn--ghost{
  background:rgba(15,36,64,.62);
  border-color:var(--line);
  color:var(--ink);
}
.btn--ghost:hover,.btn--ghost:focus-visible{
  background:var(--lime-dim);
  border-color:var(--lime);
  color:var(--lime);
}

.btn--coral{background:var(--coral);color:#1A0D08;border-color:var(--coral)}
.btn--coral:hover,.btn--coral:focus-visible{background:transparent;color:var(--coral)}

/* --- 6. 标签与状态 ------------------------------------------------------ */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
  background:rgba(15,36,64,.6);
  white-space:nowrap;
}
.tag--lime{border-color:rgba(200,255,61,.5);color:var(--lime);background:rgba(44,68,22,.42)}
.tag--coral{border-color:rgba(255,107,74,.55);color:var(--coral);background:rgba(255,107,74,.12)}
.tag--mauve{border-color:rgba(142,127,184,.55);color:var(--mauve);background:rgba(142,127,184,.14)}

/* --- 7. 面板 / 卡片 / 纸感块 ------------------------------------------- */
.panel{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
}
.panel--flush{padding:0;overflow:hidden}

.card{
  position:relative;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  transition:border-color var(--t-mid) var(--ease),
             background-color var(--t-mid) var(--ease);
}
.card::after{
  content:"";
  position:absolute;
  top:-1px;right:-1px;
  width:12px;height:12px;
  border-top:2px solid var(--line);
  border-right:2px solid var(--line);
  border-top-right-radius:var(--radius);
  transition:border-color var(--t-mid) var(--ease);
}
.card:hover,.card:focus-within{
  border-color:var(--lime);
  background:#122A4A;
}
.card:hover::after,.card:focus-within::after{border-color:var(--lime)}

.paper{
  position:relative;
  background:var(--paper);
  color:#0B1F36;
  border-radius:var(--radius);
  padding:26px 24px;
}
.paper::before{
  content:"";
  position:absolute;
  inset:7px;
  border:1px solid rgba(11,31,54,.16);
  border-radius:2px;
  pointer-events:none;
}
.paper h2,.paper h3,.paper h4{color:#0B1F36}
.paper a{color:#0B1F36;text-decoration:underline;text-decoration-color:rgba(11,31,54,.34)}

/* --- 8. 图片容器（页面阶段放置 <img> 使用） ---------------------------- */
.img-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  aspect-ratio:16 / 10;
  background:
    radial-gradient(120% 90% at 18% 8%,rgba(200,255,61,.10),transparent 58%),
    linear-gradient(148deg,#12294A 0%,#08182B 72%);
}
.img-frame img,
.img-frame picture,
.img-frame video{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.img-frame--wide{aspect-ratio:21 / 9}
.img-frame--tall{aspect-ratio:3 / 4}
.img-frame--square{aspect-ratio:1 / 1}

.img-frame__cap{
  position:absolute;
  left:10px;
  bottom:10px;
  max-width:calc(100% - 20px);
  padding:3px 8px;
  border:1px solid var(--line);
  border-radius:2px;
  background:rgba(8,24,43,.82);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.05em;
  color:var(--ink);
}

/* --- 9. 面包屑 ---------------------------------------------------------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:var(--fs-index);
  letter-spacing:.04em;
  color:var(--muted);
  font-family:var(--font-mono);
}
.breadcrumb a{color:var(--muted);transition:color var(--t-fast) var(--ease)}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--lime)}
.breadcrumb__sep{color:var(--line)}
.breadcrumb [aria-current="page"]{color:var(--ink)}

/* --- 10. 进入视口动效 --------------------------------------------------- */
.reveal{
  transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);
}
.js .reveal{opacity:0;transform:translateY(12px)}
.js .reveal.is-in{opacity:1;transform:none}

/* --- 11. 跳转链接与进度条 ----------------------------------------------- */
.skip-link{
  position:fixed;
  top:12px;
  left:12px;
  z-index:140;
  padding:10px 16px;
  border-radius:3px;
  background:var(--lime);
  color:var(--bg-base);
  font-size:14px;
  font-weight:700;
  transform:translateY(-220%);
  transition:transform var(--t-fast) var(--ease);
}
.skip-link:focus{transform:none}

.progress-bar{
  position:fixed;
  top:0;
  left:0;
  z-index:130;
  width:0;
  height:2px;
  background:linear-gradient(90deg,var(--lime) 0%,var(--coral) 100%);
  pointer-events:none;
}

/* --- 12. 站点头部：移动端顶部条 ----------------------------------------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:10px;
  padding:10px 18px;
  background:rgba(8,24,43,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.brand__mark{
  flex:none;
  width:8px;
  height:24px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--lime) 0%,#7DB60C 100%);
  box-shadow:0 0 16px rgba(200,255,61,.45);
}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{
  font-family:var(--font-head);
  font-weight:900;
  font-size:18px;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--ink);
  white-space:nowrap;
}
.brand__tag{
  display:none;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--muted);
}
.brand-rail__meta{display:none}

/* 移动导航开关 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 12px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
  transition:border-color var(--t-fast) var(--ease),
             color var(--t-fast) var(--ease),
             background-color var(--t-fast) var(--ease);
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--lime);color:var(--lime)}
.nav-toggle[aria-expanded="true"]{
  border-color:var(--lime);
  color:var(--lime);
  background:var(--lime-dim);
}
.nav-toggle__bars{display:grid;gap:3px;width:16px;flex:none}
.nav-toggle__bars i{
  display:block;
  height:1.5px;
  border-radius:2px;
  background:currentColor;
  transition:transform var(--t-fast) var(--ease),opacity var(--t-fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(4.5px) 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(-4.5px) rotate(-45deg)}
.nav-toggle__text{font-family:var(--font-mono);text-transform:uppercase}

/* 移动端下拉导航 */
.site-nav{
  grid-column:1 / -1;
  position:absolute;
  top:100%;
  left:0;
  right:0;
  max-height:0;
  overflow:hidden;
  visibility:hidden;
  padding:0 18px;
  background:var(--bg-deep);
  border-bottom:1px solid var(--line);
  transition:max-height 300ms var(--ease),
             visibility 300ms var(--ease);
}
.site-nav[data-open]{
  max-height:82vh;
  overflow-y:auto;
  visibility:visible;
}

.site-nav__list{display:flex;flex-direction:column;padding:6px 0 10px}

.nav-link{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:13px 2px;
  border-bottom:1px solid rgba(27,58,92,.65);
  color:var(--ink);
  transition:color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),
             background-color var(--t-fast) var(--ease);
}
.nav-link__idx{flex:none;font-size:11px;letter-spacing:.1em;color:var(--mauve)}
.nav-link__label{font-size:16px;font-weight:500;letter-spacing:.01em}
.nav-link:hover,.nav-link:focus-visible{color:var(--lime);border-color:var(--lime)}
.nav-link:hover .nav-link__idx,.nav-link:focus-visible .nav-link__idx{color:var(--lime)}
.nav-link:active{background:var(--lime-dim)}
.nav-link[aria-current="page"]{
  color:var(--lime);
  border-color:var(--lime);
  background:linear-gradient(90deg,rgba(200,255,61,.1) 0%,rgba(200,255,61,0) 72%);
}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--lime)}

.site-nav__foot{
  margin-top:14px;
  padding:16px 0 18px;
  border-top:1px solid var(--line);
}

/* --- 13. 站点头部：桌面端左侧纵向轨道 ----------------------------------- */
@media (min-width:1024px){
  body{padding-left:var(--rail)}
  html{scroll-padding-top:24px}

  .site-header{
    position:fixed;
    top:0;
    bottom:0;
    left:0;
    width:var(--rail);
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    gap:0;
    padding:26px 20px 24px;
    background:linear-gradient(180deg,#0B2035 0%,#08182B 58%,var(--bg-rail) 100%);
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
    border-bottom:0;
    border-right:1px solid var(--line);
  }

  .brand-rail{display:flex;flex-direction:column;gap:22px}
  .brand{flex-direction:column;align-items:flex-start;gap:12px}
  .brand__mark{
    width:100%;
    height:5px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--lime) 0%,var(--coral) 100%);
    box-shadow:0 0 18px rgba(200,255,61,.34);
  }
  .brand__text{gap:4px}
  .brand__name{font-size:23px;white-space:normal;line-height:1.24}
  .brand__tag{display:block;line-height:1.6}

  .brand-rail__meta{
    display:flex;
    flex-direction:column;
    gap:4px;
    padding-top:14px;
    border-top:1px solid var(--line);
    font-size:10px;
    letter-spacing:.08em;
    text-transform:uppercase;
    color:var(--muted);
  }
  .brand-rail__meta .mono{color:var(--mauve)}

  .nav-toggle{display:none}

  .site-nav{
    grid-column:auto;
    position:static;
    max-height:none;
    overflow:visible;
    visibility:visible;
    padding:0;
    background:none;
    border:0;
    transition:none;
  }
  .site-nav__list{padding:0}

  .nav-link{
    position:relative;
    padding:10px 0 10px 13px;
    border-bottom:1px solid rgba(27,58,92,.5);
  }
  .nav-link::before{
    content:"";
    position:absolute;
    left:0;
    top:12px;
    bottom:12px;
    width:2px;
    background:transparent;
    transition:background-color var(--t-fast) var(--ease);
  }
  .nav-link:hover::before,
  .nav-link[aria-current="page"]::before{background:var(--lime)}
  .nav-link__label{font-size:15px}
  .nav-link[aria-current="page"]{background:none}

  .site-nav__foot{
    margin-top:16px;
    padding:16px 0 0;
  }

  .progress-bar{left:var(--rail)}
}

/* --- 14. 站点页脚 -------------------------------------------------------- */
.site-footer{
  position:relative;
  margin-top:72px;
  padding-top:52px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-base) 0%,var(--bg-deep) 100%);
}

.footer-grid{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 18px;
  display:grid;
  grid-template-columns:1fr;
  gap:30px;
}
@media (min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));padding:0 28px}
}
@media (min-width:1024px){
  .footer-grid{
    grid-template-columns:1.5fr 1fr 1.1fr .9fr 1.1fr;
    gap:32px;
    padding:0 40px;
  }
}

.footer-brand__name{
  font-family:var(--font-head);
  font-weight:900;
  font-size:22px;
  letter-spacing:-.02em;
  color:var(--ink);
  margin:0 0 10px;
}
.footer-brand__line{
  max-width:30ch;
  margin:0 0 18px;
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
}

.footer-col__title{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mauve);
}
.footer-col__title::after{
  content:"";
  flex:1;
  height:1px;
  background:var(--line);
}

.footer-col li + li{margin-top:9px}
.footer-col a{
  font-size:14px;
  color:var(--muted);
  transition:color var(--t-fast) var(--ease);
}
.footer-col a:hover,.footer-col a:focus-visible{color:var(--lime)}

.footer-col--contact li{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--muted);
  overflow-wrap:anywhere;
}

.footer-bar{
  margin-top:44px;
  border-top:1px solid var(--line);
  padding:18px 18px 24px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  font-size:12px;
  color:var(--muted);
}
.footer-bar p{margin:0}
.footer-bar__contact{color:var(--mauve)}
@media (min-width:768px){ .footer-bar{padding:20px 28px 26px} }
@media (min-width:1024px){ .footer-bar{padding:20px 40px 28px} }

/* --- 15. 返回顶部 -------------------------------------------------------- */
.to-top{
  position:fixed;
  right:16px;
  bottom:16px;
  z-index:80;
  width:46px;
  height:46px;
  display:grid;
  place-items:center;
  border:1px solid var(--line);
  border-radius:50%;
  background:rgba(15,36,64,.94);
  color:var(--lime);
  font-size:16px;
  line-height:1;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--t-fast) var(--ease),
             transform var(--t-fast) var(--ease),
             visibility var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),
             background-color var(--t-fast) var(--ease);
}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.to-top:hover,.to-top:focus-visible{border-color:var(--lime);background:var(--lime-dim)}
@media (min-width:768px){
  .to-top{right:26px;bottom:26px;width:50px;height:50px;font-size:17px}
}

/* --- 16. 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;
  }
  .js .reveal{opacity:1;transform:none}
  .progress-bar{transition:none}
}