/* ============================================================
   非凡娱乐会馆 · 全站共享样式 /assets/site.css
   设计语言：星际航站楼 / 专题研究板 / 紫青冷光 + 暖金行动点
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --void:#050814;
  --deep:#0A1230;
  --panel:#111B3D;
  --violet:#8A5CFF;
  --cyan:#3DE7FF;
  --gold:#FFC857;
  --star:#F4F7FF;
  --mist:#A5B0CC;
  --ok:#43E0B0;
  --warn:#FF6B8A;

  --line:rgba(138,92,255,.30);
  --line-soft:rgba(165,176,204,.16);
  --line-cyan:rgba(61,231,255,.42);

  --r-xl:32px;
  --r-lg:26px;
  --r-md:20px;
  --r-sm:14px;
  --pill:999px;

  --font-head:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --header-h:92px;
  --shell:min(1240px,calc(100% - 3rem));
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 28px)}
body{margin:0}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- 3. Base / 中文排版 ---------- */
body{
  padding-top:var(--header-h);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  color:var(--star);
  background:
    radial-gradient(900px 620px at 84% -12%,rgba(138,92,255,.24),transparent 62%),
    radial-gradient(720px 520px at 4% 6%,rgba(61,231,255,.12),transparent 60%),
    var(--void);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.18;letter-spacing:-.012em;color:var(--star)}
h1{font-size:clamp(2.4rem,6vw,4.6rem)}
h2{font-size:clamp(1.8rem,3.4vw,2.9rem)}
h3{font-size:clamp(1.15rem,2vw,1.5rem)}
p{max-width:68ch}
strong{font-weight:700;color:var(--star)}
::selection{background:rgba(61,231,255,.28);color:var(--star)}

/* ---------- 4. 通用工具 ---------- */
.container{width:var(--shell);margin-inline:auto}
.section{padding-block:clamp(2.5rem,6vw,5rem)}
.stack>*+*{margin-top:1.15rem}
.mono{font-family:var(--font-mono);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:30px;height:1px;background:currentColor;opacity:.75}
.lede{font-size:clamp(1rem,1.5vw,1.15rem);color:var(--mist);line-height:1.85;max-width:62ch}
.divider{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,var(--line),transparent)}

/* ---------- 5. Skip link ---------- */
.skip-link{
  position:absolute;left:1rem;top:-120px;z-index:120;
  display:inline-flex;align-items:center;min-height:44px;padding:0 1.25rem;
  border-radius:var(--pill);background:var(--gold);color:#0A1230;
  font-weight:700;font-size:.9rem;text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{top:.7rem}

/* ---------- 6. Header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:80;
  background:linear-gradient(180deg,rgba(5,8,20,.96),rgba(5,8,20,.74));
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-soft);
}
.header-progress{position:absolute;left:0;right:0;bottom:0;height:2px;overflow:hidden;pointer-events:none}
.header-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 62%,var(--gold));
  transition:transform .12s linear;
}
.header-shell{
  width:var(--shell);margin-inline:auto;
  min-height:var(--header-h);
  display:flex;align-items:center;justify-content:space-between;gap:1.25rem;
  position:relative;
}

/* 品牌光轨 */
.brand{
  display:inline-flex;align-items:center;gap:.85rem;
  text-decoration:none;flex-shrink:0;
}
.brand__rail{
  width:3px;height:44px;border-radius:var(--pill);
  background:linear-gradient(180deg,var(--violet),var(--cyan));
  box-shadow:0 0 18px rgba(61,231,255,.55);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__mark{font-size:.66rem;letter-spacing:.34em;color:var(--cyan);text-transform:uppercase}
.brand__name{font-family:var(--font-head);font-weight:800;font-size:1.05rem;letter-spacing:.01em;color:var(--star);margin-top:.15rem}
.brand__tagline{font-size:.68rem;letter-spacing:.06em;color:var(--mist);margin-top:.2rem}
.brand:hover .brand__rail{box-shadow:0 0 26px rgba(138,92,255,.9)}
.brand:hover .brand__name{color:var(--cyan)}

/* 移动开关 */
.nav-toggle{
  display:none;align-items:center;gap:.6rem;
  min-height:44px;padding:0 1rem;
  border-radius:var(--pill);
  border:1px solid var(--line-cyan);
  background:rgba(61,231,255,.08);
  color:var(--star);font-size:.85rem;font-weight:600;letter-spacing:.04em;
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:rgba(61,231,255,.16)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;border-radius:2px;background:var(--cyan);transition:transform .22s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-3px) rotate(-45deg)}

/* 导航 */
.site-nav{display:flex;align-items:center;gap:1.1rem}
.site-nav__list{display:flex;align-items:center;gap:.2rem}
.site-nav__item{display:flex}
.site-nav__link{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 .82rem;
  border-radius:var(--pill);
  color:var(--mist);font-size:.92rem;font-weight:500;
  text-decoration:none;
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-nav__link:hover{color:var(--star);background:rgba(138,92,255,.16)}
.site-nav__link[aria-current="page"],
.site-nav__link.is-active{
  color:var(--star);font-weight:700;
  background:linear-gradient(180deg,rgba(138,92,255,.32),rgba(61,231,255,.12));
  box-shadow:inset 0 0 0 1px rgba(61,231,255,.42);
}
.site-nav__aside{
  display:flex;align-items:center;gap:.35rem;
  padding-left:1rem;border-left:1px solid var(--line-soft);
}
.mini-link{
  display:inline-flex;align-items:center;min-height:44px;padding:0 .62rem;
  border-radius:var(--pill);color:var(--mist);
  font-size:.82rem;text-decoration:none;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.mini-link:hover{color:var(--cyan);background:rgba(61,231,255,.1)}

/* ---------- 7. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  min-height:46px;padding:0 1.4rem;
  border-radius:var(--pill);border:1px solid transparent;
  font-family:var(--font-body);font-size:.92rem;font-weight:700;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--gold{
  background:linear-gradient(135deg,#FFD982,#FFC857 48%,#F0A93C);
  color:#0A1230;
  box-shadow:0 14px 32px -16px rgba(255,200,87,.85);
}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 20px 38px -16px rgba(255,200,87,.95)}
.btn--ghost{
  background:rgba(61,231,255,.07);
  border-color:var(--line-cyan);
  color:var(--star);
}
.btn--ghost:hover{background:rgba(61,231,255,.15);border-color:var(--cyan);transform:translateY(-2px)}
.btn--violet{
  background:rgba(138,92,255,.16);
  border-color:rgba(138,92,255,.55);
  color:var(--star);
}
.btn--violet:hover{background:rgba(138,92,255,.3);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}

/* ---------- 8. 章节头 / 编号体系 ---------- */
.chapter-head{display:flex;gap:1.1rem;align-items:flex-start;margin-bottom:1.5rem}
.chapter-num{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(2rem,5vw,3.4rem);line-height:1;
  color:var(--violet);opacity:.92;flex-shrink:0;
}
.chapter-title{font-size:clamp(1.5rem,3vw,2.4rem);font-weight:800;line-height:1.15}

/* ---------- 9. 面板 / 网格 ---------- */
.panel{
  position:relative;
  background:linear-gradient(168deg,rgba(17,27,61,.94),rgba(10,18,48,.9));
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  padding:clamp(1.25rem,3vw,2.1rem);
}
.panel--frame::before,
.panel--frame::after{
  content:"";position:absolute;width:18px;height:18px;
  border:1px solid var(--cyan);opacity:.65;pointer-events:none;
}
.panel--frame::before{top:10px;left:10px;border-right:0;border-bottom:0;border-radius:8px 0 0 0}
.panel--frame::after{bottom:10px;right:10px;border-left:0;border-top:0;border-radius:0 0 8px 0}

.grid{display:grid;gap:1.25rem}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

/* ---------- 10. 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:.35rem;
  min-height:28px;padding:0 .75rem;
  border-radius:var(--pill);border:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;
  color:var(--mist);
}
.tag--gold{color:var(--gold);border-color:rgba(255,200,87,.45);background:rgba(255,200,87,.08)}
.tag--cyan{color:var(--cyan);border-color:var(--line-cyan);background:rgba(61,231,255,.08)}
.tag--ok{color:var(--ok);border-color:rgba(67,224,176,.45);background:rgba(67,224,176,.08)}

/* ---------- 11. 折叠面板 ---------- */
.fold{
  border:1px solid var(--line-soft);border-radius:var(--r-md);
  background:rgba(17,27,61,.72);
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.fold+.fold{margin-top:.75rem}
.fold:hover{border-color:var(--line)}
.fold[open]{border-color:var(--line-cyan);background:rgba(17,27,61,.94)}
.fold__head{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  min-height:52px;padding:.9rem 1.15rem;
  font-weight:600;font-size:.98rem;color:var(--star);
  cursor:pointer;list-style:none;
}
.fold__head::-webkit-details-marker{display:none}
.fold__head::after{
  content:"+";font-family:var(--font-mono);font-size:1.15rem;line-height:1;
  color:var(--cyan);transition:transform .22s var(--ease);
}
.fold[open] .fold__head::after{transform:rotate(45deg)}
.fold__body{padding:0 1.15rem 1.15rem;color:var(--mist);font-size:.94rem;line-height:1.8}

/* ---------- 12. 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line-soft);border-radius:var(--r-md);background:rgba(17,27,61,.55)}
.table{width:100%;min-width:520px;font-size:.92rem}
.table caption{text-align:left;padding:.9rem 1rem;color:var(--mist);font-size:.8rem;font-family:var(--font-mono);letter-spacing:.06em}
.table th,.table td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top}
.table th{
  font-family:var(--font-mono);font-size:.74rem;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;color:var(--mist);
  background:rgba(10,18,48,.7);
}
.table tbody tr:last-child td{border-bottom:0}
.table tbody tr:hover{background:rgba(61,231,255,.05)}

/* ---------- 13. 图片容器基础 ---------- */
.media{
  position:relative;overflow:hidden;
  border-radius:var(--r-md);
  border:1px solid var(--line-soft);
  aspect-ratio:16/10;
  background:
    radial-gradient(circle at 28% 18%,rgba(138,92,255,.4),transparent 62%),
    radial-gradient(circle at 82% 84%,rgba(61,231,255,.22),transparent 58%),
    linear-gradient(160deg,var(--deep),var(--void));
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(165,176,204,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(165,176,204,.07) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.85;
}
.media img{display:block;width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media__caption{
  position:relative;z-index:2;
  margin:0;padding:.7rem 1rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;color:var(--mist);
}

/* ---------- 14. 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.08em;
  color:var(--mist);
}
.breadcrumb a{color:var(--mist);text-decoration:none;transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb__sep{opacity:.45}
.breadcrumb [aria-current="page"]{color:var(--star)}

/* ---------- 15. Footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,8vw,6rem);
  padding-block:clamp(2.5rem,6vw,4.5rem) 1.5rem;
  background:linear-gradient(180deg,rgba(10,18,48,.55),rgba(5,8,20,.98) 78%);
  border-top:1px solid var(--line-soft);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--violet),var(--cyan),transparent);
  opacity:.85;
}
.footer-frame{width:var(--shell);margin-inline:auto}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:clamp(1.5rem,4vw,3.5rem);
  padding-bottom:2rem;
  border-bottom:1px solid var(--line-soft);
}
.footer-brand{display:flex;flex-direction:column;gap:1rem;align-items:flex-start}
.footer-brand__mark{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--font-head);font-weight:800;font-size:1.02rem;
  color:var(--star);text-decoration:none;
}
.footer-brand__mark .mono{color:var(--cyan);letter-spacing:.22em;font-size:.74rem}
.footer-brand__glow{
  width:9px;height:9px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(61,231,255,.14),0 0 18px rgba(61,231,255,.85);
  flex-shrink:0;
}
.footer-brand__statement{color:var(--mist);font-size:.92rem;line-height:1.85;max-width:46ch}
.footer-badges{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}
.badge{
  display:inline-flex;align-items:center;
  min-height:26px;padding:0 .7rem;
  border-radius:var(--pill);border:1px solid var(--line-soft);
  font-size:.72rem;letter-spacing:.06em;color:var(--mist);
}
.badge--gold{color:var(--gold);border-color:rgba(255,200,87,.5);background:rgba(255,200,87,.09)}

.badge--cyan{color:var(--cyan);border-color:var(--line-cyan);background:rgba(61,231,255,.08)}

.footer-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem}
.footer-col__title{
  font-family:var(--font-mono);font-size:.72rem;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);
  margin-bottom:.85rem;
}
.footer-col__list{display:flex;flex-direction:column;gap:.15rem}
.footer-col__link{
  display:inline-flex;align-items:center;min-height:44px;
  color:var(--mist);font-size:.92rem;text-decoration:none;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col__link:hover{color:var(--star);padding-left:.3rem}

.footer-contact{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:.6rem 1.5rem;
  padding-block:1.5rem;
  border-bottom:1px solid var(--line-soft);
}
.footer-contact__item{display:flex;gap:.7rem;align-items:baseline;font-size:.88rem;max-width:none}
.footer-contact__label{
  flex-shrink:0;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--violet);
}
.footer-contact__value{color:var(--mist);overflow-wrap:anywhere}
.footer-contact__item--note .footer-contact__value{color:rgba(165,176,204,.8);font-size:.84rem}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.75rem 1.5rem;padding-top:1.5rem;
}
.footer-meta{font-size:.78rem;color:var(--mist);max-width:none}
.footer-legal{display:flex;flex-wrap:wrap;gap:.2rem}
.footer-legal__link{
  display:inline-flex;align-items:center;min-height:44px;padding:0 .6rem;
  border-radius:var(--pill);font-size:.78rem;color:var(--mist);text-decoration:none;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.footer-legal__link:hover{color:var(--cyan);background:rgba(61,231,255,.1)}

.to-home{display:none}

/* ---------- 16. 滚动显现协议 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
  will-change:opacity,transform;
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 17. 平板与移动 ---------- */
@media (max-width:1120px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    top:calc(100% + .55rem);
    left:0;right:0;
    display:none;
    flex-direction:column;align-items:stretch;gap:.9rem;
    padding:1.1rem;
    border-radius:var(--r-lg);
    border:1px solid var(--line);
    background:linear-gradient(180deg,rgba(17,27,61,.99),rgba(5,8,20,.99));
    box-shadow:0 44px 80px -46px rgba(0,0,0,.95);
    max-height:calc(100vh - var(--header-h) - 2rem);
    overflow-y:auto;
  }
  .site-nav[data-open]{display:flex}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:.2rem;width:100%}
  .site-nav__item{width:100%}
  .site-nav__link{width:100%;justify-content:space-between;padding:.85rem 1rem;font-size:1rem}
  .site-nav__link::after{
    content:"→";font-family:var(--font-mono);font-size:.85rem;opacity:.4;
  }
  .site-nav__aside{
    flex-direction:column;align-items:stretch;gap:.5rem;
    padding-left:0;padding-top:.9rem;border-left:0;border-top:1px solid var(--line-soft);
  }
  .mini-link{justify-content:flex-start;padding-inline:.9rem;border:1px solid var(--line-soft);border-radius:var(--pill)}
  .site-nav__aside .btn{width:100%}
}

@media (max-width:900px){
  .footer-top{grid-template-columns:1fr;gap:1.75rem}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:760px){
  :root{--header-h:80px;--shell:calc(100% - 2rem)}
  body{font-size:15.5px}
  .brand__rail{height:38px}
  .brand__name{font-size:.98rem}
  .brand__tagline{font-size:.64rem}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:.5rem}
  .footer-legal{padding-left:0;margin-left:-.6rem}
  .to-home{
    display:inline-flex;align-items:center;gap:.4rem;
    position:fixed;left:1rem;bottom:1rem;z-index:70;
    min-height:44px;padding:0 1rem;
    border-radius:var(--pill);
    border:1px solid var(--line-cyan);
    background:rgba(10,18,48,.94);
    color:var(--star);font-size:.82rem;font-weight:600;text-decoration:none;
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    box-shadow:0 16px 34px -20px rgba(0,0,0,.95);
  }
  .to-home::before{content:"↑";font-family:var(--font-mono);color:var(--cyan)}
}

@media (max-width:520px){
  .chapter-head{flex-direction:column;gap:.4rem}
  .footer-cols{grid-template-columns:1fr}
}

/* ---------- 18. 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!important;transform:none!important}
}