/* ============================================================
   娱乐神殿 HD 中文站 · 共享层 /assets/site.css
   侧边索引轨道 + 编辑感衬线排版 + 深墨蓝档案底色
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
a{color:inherit;text-decoration:none}
hr{border:0}
table{border-collapse:collapse;width:100%}

/* ---------- 2. Tokens ---------- */
:root{
  --ink-950:#070C16;
  --ink-900:#0B1220;
  --violet-900:#16122B;
  --surface:#1E2A3A;
  --line:#334155;
  --line-soft:rgba(51,65,85,.6);
  --text:#E8EEF7;
  --muted:#9FB0C7;
  --muted-dim:#6B7A91;
  --cyan:#35E0D0;
  --gold:#E8B86A;
  --coral:#FF7A8A;
  --mint:#5EE6A8;
  --focus:#A78BFA;
  --rail-w:236px;
  --serif:"Source Han Serif SC","Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --step-1:1rem;
  --step-2:1.25rem;
  --step-3:1.5625rem;
  --step-4:1.953rem;
  --step-5:2.441rem;
}

/* ---------- 3. Base / 中文排版 ---------- */
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--text);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 620px at 84% -12%,rgba(53,224,208,.075),transparent 68%),
    radial-gradient(900px 520px at 6% 4%,rgba(167,139,250,.07),transparent 70%),
    linear-gradient(180deg,#0B1220 0%,#0A0F1C 52%,#070C16 100%);
  background-attachment:fixed;
  min-height:100vh;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.25;color:var(--text)}
::selection{background:rgba(53,224,208,.28);color:#04121A}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:2px}
#main-content{display:block}

/* ---------- 4. 头部：左侧品牌轨道 ---------- */
.site-rail{
  position:fixed;
  top:0;bottom:0;inset-inline-start:0;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  gap:20px;
  padding:24px 18px 20px;
  background:linear-gradient(180deg,#100D22 0%,#16122B 46%,#0A0916 100%);
  border-inline-end:1px solid var(--line);
  z-index:60;
  overflow-y:auto;
  overscroll-behavior:contain;
}
.site-rail::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    linear-gradient(to right,rgba(51,65,85,.3) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(51,65,85,.3) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 72%);
}

/* skip link */
.skip-link{
  position:fixed;top:10px;inset-inline-start:10px;z-index:200;
  transform:translateY(-180%);
  background:var(--cyan);color:#04121A;
  padding:10px 18px;font-size:14px;font-weight:700;letter-spacing:.04em;
  border-radius:2px;
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0);outline:2px solid var(--text);outline-offset:2px}

/* 品牌印记 */
.rail__brand{
  position:relative;
  display:grid;gap:5px;
  padding-bottom:18px;
  border-bottom:1px solid var(--line-soft);
}
.rail__sigil{
  position:relative;display:block;
  width:34px;height:40px;margin-bottom:6px;
  border:1px solid rgba(232,184,106,.55);
}
.rail__sigil::before{
  content:"";position:absolute;inset:7px 7px auto;height:16px;
  border:1px solid rgba(53,224,208,.6);border-bottom:0;
  border-radius:14px 14px 0 0;
}
.rail__sigil::after{
  content:"";position:absolute;bottom:8px;left:50%;width:1px;height:9px;
  background:var(--gold);transform:translateX(-50%);
}
.rail__wordmark{
  font-family:var(--serif);font-weight:600;
  font-size:1.3rem;line-height:1.2;letter-spacing:.16em;
  color:var(--text);
}
.rail__sub{
  font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--muted-dim);
}
.rail__version{
  justify-self:start;margin-top:8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  color:var(--gold);
  border:1px solid rgba(232,184,106,.36);
  padding:3px 7px;
}

/* 移动目录按钮 */
.rail__toggle{
  display:none;align-items:center;gap:9px;
  border:1px solid var(--line);
  padding:9px 13px;
  font-size:13px;letter-spacing:.14em;
  color:var(--muted);
  cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.rail__toggle:hover{color:var(--text);border-color:var(--line)}
.rail__toggle[aria-expanded="true"]{color:var(--cyan);border-color:rgba(53,224,208,.55)}
.rail__toggle-bars{position:relative;display:block;width:16px;height:10px}
.rail__toggle-bars::before,
.rail__toggle-bars::after{content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;transition:transform .2s var(--ease)}
.rail__toggle-bars::before{top:0}
.rail__toggle-bars::after{bottom:0}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars::before{transform:translateY(4px) rotate(45deg)}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars::after{transform:translateY(-4.5px) rotate(-45deg)}
.rail__toggle-text{line-height:1}

/* 导航 */
.rail__nav{position:relative;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.rail__nav-label{
  display:flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.26em;
  color:var(--muted-dim);
}
.rail__nav-label::after{content:"";flex:1;height:1px;background:var(--line-soft)}
.rail__list{display:grid;gap:2px}
.rail__link{
  display:grid;grid-template-columns:24px 1fr;align-items:center;
  padding:9px 8px;
  font-size:14px;letter-spacing:.05em;
  color:var(--muted);
  border-inline-start:2px solid transparent;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.rail__link:hover{
  color:var(--text);
  background:rgba(53,224,208,.07);
  border-inline-start-color:rgba(53,224,208,.45);
}
.rail__link[aria-current="page"]{
  color:var(--text);
  background:linear-gradient(90deg,rgba(53,224,208,.16),rgba(53,224,208,0) 88%);
  border-inline-start-color:var(--cyan);
}
.rail__link[aria-current="page"] .rail__idx{color:var(--cyan)}
.rail__idx{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;
  color:#5A6A82;
}

/* 轨道底部 */
.rail__foot{
  display:grid;gap:10px;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
}
.rail__hint{
  font-family:var(--mono);font-size:10px;line-height:1.8;
  letter-spacing:.1em;color:var(--muted-dim);
}
.rail__cta{
  display:block;text-align:center;
  padding:10px 12px;
  font-size:13px;letter-spacing:.08em;
  color:var(--gold);
  border:1px solid rgba(232,184,106,.5);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.rail__cta:hover{background:var(--gold);color:#150E02;border-color:var(--gold)}
.rail__mini{
  display:flex;align-items:center;justify-content:space-between;
  padding:5px 2px;
  font-size:12.5px;letter-spacing:.06em;
  color:var(--muted);
  border-bottom:1px dashed rgba(51,65,85,.85);
  transition:color .18s var(--ease)
}
.rail__mini::after{content:"→";color:var(--cyan)}
.rail__mini:hover{color:var(--cyan)}

/* ---------- 5. 页脚：分层档案底 ---------- */
.site-foot{
  background:linear-gradient(180deg,#0A0F1C 0%,#070C16 62%);
  border-top:1px solid var(--line);
  color:var(--muted);
}
.foot__inner{max-width:1180px;margin-inline:auto;padding:56px clamp(18px,4vw,40px) 34px}
.foot__top{
  display:grid;grid-template-columns:minmax(230px,1fr) 1.5fr;
  gap:clamp(28px,4vw,56px);
  padding-bottom:34px;
  border-bottom:1px solid var(--line-soft);
}
.foot__brandcol{display:grid;gap:11px;align-content:start}
.foot__mark{position:relative;width:34px;height:38px;border:1px solid rgba(232,184,106,.5)}
.foot__mark::before{
  content:"";position:absolute;inset:6px 6px auto;height:14px;
  border:1px solid rgba(53,224,208,.45);border-bottom:0;
  border-radius:12px 12px 0 0;
}
.foot__brand{font-family:var(--serif);font-weight:600;font-size:1.45rem;letter-spacing:.1em;color:var(--text)}
.foot__note{font-size:14px;color:var(--muted);max-width:34ch;line-height:1.8}
.foot__stamp{
  margin-top:4px;padding-inline-start:10px;
  border-inline-start:1px solid var(--gold);
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:var(--muted-dim);
}
.foot__nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.foot__nav-group{display:grid;gap:10px;align-content:start}
.foot__nav-title{font-family:var(--mono);font-size:10.5px;letter-spacing:.26em;color:var(--muted-dim);text-transform:uppercase}
.foot__list{display:grid;gap:6px}
.foot__link{
  display:inline-flex;align-items:center;gap:9px;
  padding:2px 0;font-size:14.5px;letter-spacing:.03em;
  color:var(--muted);
  transition:color .18s var(--ease);
}
.foot__link::before{
  content:"";width:6px;height:6px;flex:0 0 auto;
  border:1px solid var(--line);transform:rotate(45deg);
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.foot__link:hover{color:var(--text)}
.foot__link:hover::before{background:var(--cyan);border-color:var(--cyan)}
.foot__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px 32px;
  padding-top:22px;
}
.foot__contact{font-family:var(--mono);font-size:12px;line-height:1.9;letter-spacing:.04em;color:var(--muted-dim)}
.foot__legal{display:flex;flex-wrap:wrap;gap:6px 20px;font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:var(--muted-dim)}

/* ---------- 6. 通用骨架组件 ---------- */
.shell{width:100%;max-width:1180px;margin-inline:auto;padding-inline:clamp(18px,4vw,40px)}
.section{padding-block:clamp(42px,6vw,84px)}
.section__head{display:flex;flex-direction:column;gap:10px;margin-bottom:clamp(20px,3vw,36px)}
.kicker{
  display:flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.26em;
  color:var(--cyan);text-transform:uppercase;
}
.kicker::before{content:"";width:18px;height:1px;background:var(--cyan)}
.page-title{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(1.9rem,4vw,3rem);line-height:1.22;
  letter-spacing:-.01em;color:var(--text);
}
.lede{font-size:clamp(1rem,1.35vw,1.1rem);line-height:1.85;color:var(--muted);max-width:58ch}
.stack{display:grid;gap:clamp(14px,2vw,22px)}
.divider{height:1px;background:var(--line-soft);margin-block:clamp(20px,3vw,32px)}
.grid{display:grid;gap:clamp(16px,2.2vw,26px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.prose{max-width:68ch;color:var(--text)}
.prose p+p{margin-top:1em}
.prose h2{font-size:var(--step-3);margin-top:1.9em;margin-bottom:.6em;padding-top:.7em;border-top:1px solid var(--line-soft)}
.prose h3{font-size:var(--step-2);margin-top:1.5em;margin-bottom:.4em}
.prose ul,.prose ol{margin-top:.8em;display:grid;gap:.45em}
.prose li{padding-inline-start:1.3em;position:relative;color:var(--muted)}
.prose li::before{content:"";position:absolute;inset-inline-start:0;top:.72em;width:6px;height:1px;background:var(--cyan)}
.prose strong{color:var(--text)}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(53,224,208,.35)}
.prose a:hover{border-bottom-color:var(--cyan)}

/* ---------- 7. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  font-size:14px;letter-spacing:.06em;
  color:var(--text);
  background:rgba(30,42,58,.65);
  border:1px solid var(--line);
  border-radius:0;
  cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn:hover{border-color:rgba(53,224,208,.6);color:var(--cyan)}
.btn--gold{background:var(--gold);border-color:var(--gold);color:#150E02;font-weight:600}
.btn--gold:hover{background:#F0C884;border-color:#F0C884;color:#150E02}
.btn--ghost{background:transparent;border-color:rgba(53,224,208,.5);color:var(--cyan)}
.btn--ghost:hover{background:rgba(53,224,208,.12);border-color:var(--cyan)}
.btn--quiet{background:transparent;border-color:transparent;color:var(--muted);padding-inline:0;min-height:auto}
.btn--quiet:hover{color:var(--cyan)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  color:var(--muted);
  border:1px solid var(--line);
  white-space:nowrap;
}
.tag--gold{color:var(--gold);border-color:rgba(232,184,106,.45)}
.tag--cyan{color:var(--cyan);border-color:rgba(53,224,208,.45)}
.mono{font-family:var(--mono);font-size:.88em;letter-spacing:.02em;color:var(--muted)}

/* ---------- 8. 面板 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background:linear-gradient(180deg,rgba(30,42,58,.92),rgba(22,18,43,.92));
  border:1px solid var(--line);
}
.panel__head{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding-bottom:12px;margin-bottom:14px;
  border-bottom:1px solid var(--line-soft);
}

/* ---------- 9. 媒体容器（页面阶段放图） ---------- */
.media{
  position:relative;isolation:isolate;
  border:1px solid var(--line);
  background:linear-gradient(160deg,#101A2B,#16122B 58%,#090E1A);
  overflow:hidden;
}
.media__frame{
  position:relative;display:block;
  aspect-ratio:16/10;
  overflow:hidden;
  background:
    repeating-linear-gradient(90deg,rgba(51,65,85,.35) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(0deg,rgba(51,65,85,.35) 0 1px,transparent 1px 40px);
}
.media__frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 90% at 78% 8%,rgba(53,224,208,.16),transparent 62%),
             linear-gradient(180deg,rgba(7,12,22,0) 42%,rgba(7,12,22,.72) 100%);
}
.media__img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.92) contrast(1.03)}
.media__cap{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 13px;
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  color:var(--muted-dim);
  border-top:1px solid var(--line-soft);
  background:rgba(7,12,22,.5);
}
.media--wide .media__frame{aspect-ratio:21/9}
.media--arch .media__frame{
  aspect-ratio:4/5;
  border-start-start-radius:999px;
  border-start-end-radius:999px;
}

/* ---------- 10. 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:16px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--muted-dim);
}
.crumbs a{color:var(--muted);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{color:var(--line)}
.crumbs [aria-current="page"]{color:var(--text)}

/* ---------- 11. 滚动进度 / 返回顶部 / 显影 ---------- */
.progress{
  position:fixed;top:0;inset-inline:0;height:2px;
  z-index:120;pointer-events:none;
  background:rgba(51,65,85,.35);
}
.progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--gold));
}
.to-top{
  position:fixed;inset-inline-end:18px;bottom:18px;z-index:110;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 15px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;
  color:var(--muted);
  background:rgba(11,18,32,.94);
  border:1px solid var(--line);
  cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),color .18s var(--ease),border-color .18s var(--ease),visibility .24s;
}
.to-top::before{content:"↑";color:var(--cyan)}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.to-top:hover{color:var(--cyan);border-color:rgba(53,224,208,.55)}
html.js-motion [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
html.js-motion [data-reveal].is-in{opacity:1;transform:none}
[data-spy] a[aria-current="true"]{color:var(--cyan)}

/* ---------- 12. 桌面：为固定轨道让位 ---------- */
@media (min-width:1024px){
  body{padding-inline-start:var(--rail-w)}
  .progress{inset-inline-start:var(--rail-w)}
}

/* ---------- 13. 平板 / 手机：轨道变顶部命令栏 ---------- */
@media (max-width:1023px){
  body{scroll-padding-top:100px}
  .site-rail{
    position:sticky;top:0;bottom:auto;inset-inline-start:auto;
    width:auto;height:auto;
    display:grid;grid-template-columns:1fr auto;align-items:center;
    gap:12px;
    padding:12px clamp(14px,4vw,22px);
    overflow:visible;
    border-inline-end:0;
    border-bottom:1px solid var(--line);
    box-shadow:0 14px 30px rgba(4,8,16,.55);
  }
  .site-rail::before{opacity:.3;background-size:20px 20px}
  .rail__brand{
    display:flex;flex-wrap:wrap;align-items:center;gap:9px;
    padding-bottom:0;border-bottom:0;
  }
  .rail__sigil{width:26px;height:30px;margin-bottom:0}
  .rail__sigil::before{inset:5px 5px auto;height:12px;border-radius:10px 10px 0 0}
  .rail__sigil::after{bottom:5px;height:7px}
  .rail__wordmark{font-size:1.05rem;letter-spacing:.12em}
  .rail__sub{display:none}
  .rail__version{margin-top:0;font-size:10px;padding:2px 6px;letter-spacing:.04em}
  .rail__toggle{display:inline-flex;justify-self:end}
  .rail__nav{
    position:absolute;top:100%;inset-inline:0;
    display:none;flex-direction:column;gap:14px;
    padding:18px clamp(14px,4vw,22px) 22px;
    max-height:calc(100vh - 72px);
    overflow-y:auto;
    background:#12102A;
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 44px rgba(0,0,0,.6);
  }
  .rail__nav[data-open]{display:flex}
  .rail__link{font-size:15px;padding:11px 10px}
  .rail__foot{display:none}
  .foot__top{grid-template-columns:1fr;gap:30px}
}

@media (max-width:640px){
  .foot__inner{padding-top:42px}
  .foot__nav{grid-template-columns:1fr;gap:24px}
  .foot__base{flex-direction:column;align-items:flex-start}
  .page-title{font-size:clamp(1.6rem,7vw,2.2rem)}
  .to-top{inset-inline-end:12px;bottom:12px}
}

/* ---------- 14. 无障碍：减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html.js-motion [data-reveal]{opacity:1;transform:none}
  .to-top{transform:none}
}