/* ==========================================================================
   神殿棋牌电玩 · 全站共享样式 /assets/site.css
   夜空深蓝底 · 神殿金与霓虹紫双强调 · 柱廊刻线 · 堆叠面板
   ========================================================================== */

:root{
  --ink-900:#0B1026;
  --ink-800:#151B3D;
  --ink-700:#1E2650;
  --gold:#E3B23C;
  --gold-dim:#6E5220;
  --violet:#8B5CF6;
  --jade:#2FD6A5;
  --amber:#FF9F45;
  --ivory:#F5F1E6;
  --mist:#A9B3D0;
  --text-soft:#C9D1E8;
  --line:rgba(110,82,32,.55);
  --line-soft:rgba(169,179,208,.18);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,"Times New Roman",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"SFMono-Regular",Consolas,"Liberation Mono","Courier New",monospace;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 22px 46px -28px rgba(0,0,0,.92);
  --header-h:70px;
  --ease:cubic-bezier(.4,.14,.3,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0}
ul[class],ol[class]{list-style:none}
img,svg{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}

/* ---------- 基础排版 ---------- */
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:
    linear-gradient(90deg,rgba(169,179,208,.05) 1px,transparent 1px),
    radial-gradient(900px 520px at 12% -6%,rgba(139,92,246,.22),transparent 62%),
    radial-gradient(780px 460px at 92% 2%,rgba(227,178,60,.14),transparent 60%),
    radial-gradient(700px 540px at 50% 106%,rgba(47,214,165,.10),transparent 66%);
  background-size:25% 100%,auto,auto,auto;
  background-repeat:repeat-y,no-repeat,no-repeat,no-repeat;
  color:var(--ivory);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.8;
  letter-spacing:.005em;
}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:900;
  line-height:1.15;
  letter-spacing:-.01em;
  color:var(--ivory);
  text-shadow:0 -1px 0 rgba(227,178,60,.30);
}
h1{font-size:clamp(34px,5.4vw,56px)}
h2{font-size:clamp(26px,3.4vw,40px)}
h3{font-size:clamp(20px,2.2vw,28px)}
h4{font-size:20px}
p{color:var(--text-soft)}
strong,b{color:var(--ivory);font-weight:700}
code,kbd,samp{font-family:var(--font-num);font-size:.92em;color:var(--gold)}
::selection{background:rgba(227,178,60,.32);color:var(--ivory)}

:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}

/* ---------- 布局骨架 ---------- */
.wrap{width:min(1200px,calc(100% - 2 * clamp(16px,4vw,48px)));margin-inline:auto}
.page-main{padding-block:clamp(40px,6vw,88px)}
#main-content{scroll-margin-top:calc(var(--header-h) + 90px)}
.prose{max-width:68ch}
.stack{display:grid;gap:clamp(26px,4vw,56px)}
.muted{color:var(--mist);font-size:14px}
.rule{height:1px;border:0;background:linear-gradient(90deg,var(--gold-dim),rgba(110,82,32,0) 78%)}
.text-gold{color:var(--gold)}
.mark{color:var(--gold);font-weight:700;border-bottom:2px solid var(--gold);padding-bottom:1px}

.eyebrow{
  display:inline-flex;align-items:center;gap:.65em;
  font-size:13px;letter-spacing:.16em;color:var(--mist);
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--gold);flex:0 0 auto}
.lede{font-size:18px;line-height:1.8;color:var(--text-soft);max-width:58ch}
.note{
  border-left:2px solid var(--gold);
  padding:2px 0 2px 16px;
  font-size:13px;letter-spacing:.02em;line-height:1.75;
  color:var(--mist);
}

/* ---------- 面板与章节 ---------- */
.panel{
  position:relative;
  background:linear-gradient(158deg,rgba(30,38,80,.92),rgba(11,16,38,.94));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(20px,3vw,38px);
  box-shadow:var(--shadow);
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.panel:hover,.panel:focus-within{border-color:rgba(227,178,60,.85)}
.panel--cut{
  border-radius:0;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 24px),calc(100% - 24px) 100%,0 100%);
}
.chapter-head{display:flex;flex-direction:column;gap:10px;margin-bottom:clamp(14px,2vw,24px)}
.chapter-num{
  font-family:var(--font-num);
  font-weight:700;
  font-size:clamp(38px,6vw,68px);
  line-height:.85;
  letter-spacing:-.03em;
  color:rgba(227,178,60,.22);
  -webkit-text-stroke:1.4px var(--gold);
  transition:transform .24s var(--ease);
}
.chapter-num:hover{transform:translateY(-2px)}

/* ---------- 按钮与链接 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  padding:.66em 1.2em;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-sans);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  white-space:nowrap;
  transition:border-color .24s var(--ease),transform .24s var(--ease),background-color .24s var(--ease),color .24s var(--ease);
}
.btn--gold{background:var(--gold);color:#150E02;border-color:var(--gold)}
.btn--gold:hover,.btn--gold:focus-visible{transform:translateY(-2px);background:#F0C257;border-color:#F0C257}
.btn--ghost{border-color:var(--gold-dim);color:var(--ivory);background:rgba(139,92,246,.10)}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--gold);color:var(--gold);transform:translateY(-2px)}
.btn--quiet{border-color:var(--line-soft);color:var(--mist);background:rgba(21,27,61,.6)}
.btn--quiet:hover,.btn--quiet:focus-visible{border-color:var(--jade);color:var(--jade)}

.link-more{
  display:inline-flex;align-items:center;gap:.4em;
  position:relative;color:var(--gold);font-weight:600;font-size:15px;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:100%;
  background:var(--gold);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .24s var(--ease);
}
.link-more:hover::after,.link-more:focus-visible::after{transform:scaleX(1)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:.4em;
  padding:.24em .7em;border-radius:999px;
  border:1px solid;font-size:13px;letter-spacing:.02em;line-height:1.6;
}
.tag--jade{color:var(--jade);border-color:rgba(47,214,165,.45);background:rgba(47,214,165,.10)}
.tag--amber{color:var(--amber);border-color:rgba(255,159,69,.45);background:rgba(255,159,69,.10)}
.tag--violet{color:#C4B0FF;border-color:rgba(139,92,246,.55);background:rgba(139,92,246,.14)}
.tag--gold{color:var(--gold);border-color:rgba(227,178,60,.5);background:rgba(227,178,60,.10)}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.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))}
.grid--aside{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}

/* ---------- 编号目录 ---------- */
.index-list{counter-reset:idx;display:grid}
.index-list li{counter-increment:idx;display:block}
.index-list a{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;
  gap:14px;align-items:baseline;
  padding:14px 4px;
  border-bottom:1px solid var(--line-soft);
  color:var(--ivory);
  transition:padding-left .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.index-list a::before{
  content:counter(idx,decimal-leading-zero);
  font-family:var(--font-num);font-size:14px;letter-spacing:.08em;color:var(--gold);
}
.index-list a:hover,.index-list a:focus-visible{border-color:var(--gold);padding-left:12px;color:var(--gold)}
.index-list__meta{font-size:13px;color:var(--mist);letter-spacing:.02em}

/* ---------- 图片容器 ---------- */
.figure{margin:0}
.figure__frame{
  position:relative;overflow:hidden;
  border-radius:16px;
  border:1px solid var(--line);
  background:linear-gradient(150deg,var(--ink-700),var(--ink-900));
  aspect-ratio:16/9;
}
.figure__frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 90% at 82% 8%,rgba(139,92,246,.22),transparent 58%),
             radial-gradient(100% 80% at 8% 96%,rgba(227,178,60,.14),transparent 60%);
}
.figure__frame img{width:100%;height:100%;object-fit:cover}
.figure__frame--wide{aspect-ratio:21/9}
.figure__frame--square{aspect-ratio:1/1}
.figure__frame--portrait{aspect-ratio:4/5}
.figure__caption{margin-top:.7em;font-size:13px;letter-spacing:.02em;color:var(--mist)}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:.5em;font-size:13px;letter-spacing:.02em;color:var(--mist)}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:.5em;list-style:none;padding:0}
.crumbs li+li::before{content:"／";margin-right:.5em;color:var(--gold-dim)}
.crumbs a{color:var(--mist)}
.crumbs a:hover,.crumbs a:focus-visible{color:var(--gold)}
.crumbs [aria-current="page"]{color:var(--ivory)}

/* ---------- 章节索引（页面阶段使用） ---------- */
.chapter-rail{
  position:fixed;right:clamp(10px,2vw,26px);top:50%;transform:translateY(-50%);
  z-index:40;display:none;flex-direction:column;gap:12px;
}
.chapter-rail a{
  display:flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.12em;color:var(--mist);
  transition:color .24s var(--ease);
}
.chapter-rail__dot{width:20px;height:2px;background:var(--gold-dim);transition:width .24s var(--ease),background-color .24s var(--ease)}
.chapter-rail__label{white-space:nowrap}
.chapter-rail a:hover,.chapter-rail a:focus-visible{color:var(--gold)}
.chapter-rail a:hover .chapter-rail__dot,.chapter-rail a:focus-visible .chapter-rail__dot{width:30px;background:var(--gold)}
.chapter-rail a[data-active="true"]{color:var(--gold)}
.chapter-rail a[data-active="true"] .chapter-rail__dot{width:34px;background:var(--gold)}
@media (min-width:1180px){.chapter-rail{display:flex}}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;left:50%;top:-64px;transform:translateX(-50%);
  z-index:120;padding:.6em 1.2em;border-radius:0 0 10px 10px;
  background:var(--gold);color:#150E02;font-size:14px;font-weight:700;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  box-shadow:0 12px 30px -22px rgba(0,0,0,.95);
}
.brand-bar{
  background:linear-gradient(90deg,rgba(139,92,246,.20),rgba(11,16,38,.72) 42%,rgba(11,16,38,.92));
  border-bottom:1px solid var(--line);
  font-size:13px;
  letter-spacing:.02em;
}
.brand-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-block:5px}
.brand-bar__note{display:flex;align-items:center;gap:.6em;color:var(--ivory);font-weight:500}
.brand-bar__meta{color:var(--mist);white-space:nowrap}
.brand-bar__tel{color:var(--gold);font-family:var(--font-num);font-weight:700;letter-spacing:.04em}
.dot{width:7px;height:7px;border-radius:50%;background:var(--jade);box-shadow:0 0 0 3px rgba(47,214,165,.18);flex:0 0 auto}
.dot--gold{background:var(--gold);box-shadow:0 0 0 3px rgba(227,178,60,.20)}

.nav-bar{
  position:relative;
  background:rgba(11,16,38,.90);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:background-color .24s var(--ease);
}
.site-header[data-scrolled] .nav-bar{background:rgba(11,16,38,.97)}
.nav-bar__inner{
  display:flex;align-items:center;gap:clamp(10px,1.8vw,26px);
  min-height:var(--header-h);
  transition:min-height .24s var(--ease);
}
.site-header[data-scrolled] .nav-bar__inner{min-height:58px}

.brand{display:flex;align-items:center;gap:.7em;flex:0 0 auto}
.brand__glyph{
  display:grid;place-items:center;flex:0 0 auto;
  width:40px;height:40px;border:1px solid var(--gold);border-radius:11px;
  font-family:var(--font-serif);font-weight:900;font-size:19px;color:var(--gold);
  background:radial-gradient(circle at 30% 18%,rgba(139,92,246,.42),transparent 72%);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-family:var(--font-serif);font-weight:900;font-size:19px;letter-spacing:.02em;color:var(--ivory)}
.brand__sub{font-size:11px;letter-spacing:.18em;color:var(--mist)}

.site-nav{margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:clamp(6px,1.3vw,18px);list-style:none}
.site-nav__list a{
  position:relative;display:inline-block;
  padding:.5em .15em;font-size:15px;font-weight:500;color:var(--ivory);letter-spacing:.02em;
  transition:color .24s var(--ease);
}
.site-nav__list a::after{
  content:"";position:absolute;left:0;bottom:.24em;height:2px;width:0;
  background:var(--gold);transition:width .24s var(--ease);
}
.site-nav__list a:hover,.site-nav__list a:focus-visible{color:var(--gold)}
.site-nav__list a:hover::after,.site-nav__list a:focus-visible::after{width:100%}
.site-nav__list a[aria-current="page"]{color:var(--gold);font-weight:700}
.site-nav__list a[aria-current="page"]::after{width:100%}

.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-actions .btn{font-size:14px;padding:.58em 1.05em}

.nav-toggle{
  display:none;align-items:center;gap:.6em;
  order:3;margin-left:auto;
  padding:.5em .8em;border:1px solid var(--gold-dim);border-radius:10px;
  color:var(--ivory);font-size:14px;letter-spacing:.04em;
}
.nav-toggle__bars{position:relative;display:block;width:18px;height:2px;background:var(--gold)}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--gold);
  transition:transform .24s var(--ease),background-color .24s var(--ease);
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;bottom:0;width:100%;height:2px;
  transform:scaleX(var(--scroll-progress,0));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--violet),var(--gold));
  z-index:2;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,110px);
  border-top:1px solid var(--gold-dim);
  background:
    radial-gradient(760px 340px at 14% 0%,rgba(139,92,246,.16),transparent 64%),
    linear-gradient(180deg,rgba(21,27,61,.72),rgba(11,16,38,1) 62%);
  color:var(--text-soft);
  font-size:14px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.75;
}
.footer__inner{padding-block:clamp(34px,5vw,64px)}
.footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,44px);
}
.footer__brand .brand{margin-bottom:14px}
.footer__sign{
  font-family:var(--font-serif);font-weight:900;font-size:16px;line-height:1.5;
  color:var(--ivory);max-width:22ch;
}
.footer__note{margin-top:10px;font-size:13px;letter-spacing:.02em;color:var(--mist);max-width:26ch}
.footer__col-title{
  font-family:var(--font-serif);font-weight:900;font-size:13px;
  letter-spacing:.2em;color:var(--gold);margin-bottom:14px;
  text-shadow:none;
}
.footer__list{display:grid;gap:10px;list-style:none}
.footer__list a{
  position:relative;color:var(--ivory);font-size:14px;
  transition:color .24s var(--ease);
}
.footer__list a::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:100%;
  background:var(--gold);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .24s var(--ease);
}
.footer__list a:hover,.footer__list a:focus-visible{color:var(--gold)}
.footer__list a:hover::after,.footer__list a:focus-visible::after{transform:scaleX(1)}
.footer__meta{
  margin-top:clamp(24px,3.4vw,42px);
  padding-top:18px;
  border-top:1px solid var(--line-soft);
  display:grid;gap:10px;
  font-size:13px;letter-spacing:.02em;
}
.footer__contact{display:flex;flex-wrap:wrap;gap:6px 14px;color:var(--mist)}
.footer__label{
  color:var(--gold);font-weight:700;margin-right:.35em;
  letter-spacing:.06em;
}
.footer__legal{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;
  color:var(--mist);
}
.footer__year{font-family:var(--font-num);color:var(--ivory)}

/* ---------- 显现动画（需 JS 与 .is-visible） ---------- */
html.has-js [data-reveal]{opacity:0;transform:translateY(16px)}
html.has-js [data-reveal]{transition:opacity .48s var(--ease),transform .48s var(--ease)}
html.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-actions .btn--ghost{display:none}
  .site-nav__list a{font-size:14px}
}
@media (max-width:960px){
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:920px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    margin-left:0;
    background:rgba(15,21,48,.98);
    background-image:linear-gradient(180deg,rgba(139,92,246,.16),transparent 60%);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    overflow:hidden;
    max-height:0;opacity:0;visibility:hidden;
    transition:max-height .32s var(--ease),opacity .24s var(--ease),visibility .24s linear;
  }
  .site-nav[data-open]{max-height:78vh;opacity:1;visibility:visible;overflow-y:auto}
  .site-nav__list{
    flex-direction:column;align-items:stretch;gap:0;
    padding:10px clamp(16px,4vw,32px) 18px;
  }
  .site-nav__list a{
    display:block;padding:.85em 0;font-size:16px;
    border-bottom:1px solid var(--line-soft);
  }
  .site-nav__list a::after{display:none}
  .site-nav__list a[aria-current="page"]{padding-left:12px}
  .grid--2,.grid--3,.grid--aside{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  body{font-size:16px}
  .brand-bar__meta{display:none}
  .brand-bar__note{font-size:12px}
  .brand__glyph{width:34px;height:34px;font-size:17px}
  .brand__name{font-size:17px}
  .brand__sub{display:none}
  .nav-actions .btn{font-size:13px;padding:.5em .85em}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .footer__sign{max-width:none}
  .footer__legal{justify-content:flex-start}
}

/* ---------- 无障碍动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.has-js [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
}