/* ==========================================================================
   99真人官方 · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 头部轨道 / 页脚 / 通用组件
   ========================================================================== */

/* ---------- 01 设计令牌 ---------- */
:root{
  --ink:#0A0A12;
  --deep:#12122A;
  --neon:#A855F7;
  --bolt:#2D9CDB;
  --amber:#F59E0B;
  --paper:#F5F3FF;
  --muted:#C4B5FD;
  --line:#4C1D95;
  --cyan:#22D3EE;
  --scrim:rgba(10,10,18,.72);

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"HarmonyOS Sans","Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --rail-w:272px;
  --content-max:1180px;
  --radius:14px;
  --gap:clamp(16px,2vw,26px);
  --edge:clamp(18px,4vw,48px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dock-h:74px;
}

/* ---------- 02 Reset ---------- */
*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  background-color:var(--ink);
  background-image:
    radial-gradient(58vw 58vw at 92% -10%, rgba(168,85,247,.22), transparent 62%),
    radial-gradient(52vw 52vw at 0% 96%, rgba(45,156,219,.16), transparent 62%),
    radial-gradient(34vw 34vw at 74% 118%, rgba(245,158,11,.10), transparent 62%);
  background-attachment:fixed;
  background-repeat:no-repeat;
}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--paper);
  background:transparent;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding-bottom:calc(var(--dock-h) + env(safe-area-inset-bottom, 0px));
}

h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.18;
  letter-spacing:0;
  margin:0 0 .6em;
}
h1{font-size:clamp(38px,6vw,72px);line-height:1.06}
h2{font-size:clamp(26px,3.4vw,42px)}
h3{font-size:clamp(20px,2.2vw,26px)}
h4{font-size:17px}
p{margin:0 0 1.1em}
ul,ol{padding-left:1.2em}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
strong{font-weight:700;color:var(--paper)}
code,kbd,samp{font-family:var(--font-mono);font-size:.92em}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible,
summary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

main{display:block;position:relative}
#main-content{scroll-margin-top:88px}

/* ---------- 03 排版与版式基础 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--bolt);
  margin:0 0 14px;
}
.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  background:currentColor;
  flex:none;
}

.display{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.04;
  letter-spacing:.002em;
  margin:0;
}
.display--xl{font-size:clamp(42px,7.6vw,92px)}
.display--lg{font-size:clamp(32px,5vw,60px)}

.lede{
  font-size:clamp(16px,1.5vw,19px);
  line-height:1.85;
  color:var(--muted);
  max-width:62ch;
  margin:0;
}

.container{
  width:100%;
  max-width:var(--content-max);
  margin-inline:auto;
  padding-inline:var(--edge);
}

.section{padding-block:clamp(46px,7vw,104px)}
.section--tight{padding-block:clamp(28px,4vw,56px)}

.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:clamp(24px,3vw,44px);
}

.rule{
  border:0;
  height:1px;
  margin:clamp(22px,3vw,40px) 0;
  background:linear-gradient(90deg,var(--line),rgba(76,29,149,0) 88%);
}

/* ---------- 04 通用按钮 ---------- */
.btn{
  --btn-bg:var(--deep);
  --btn-fg:var(--paper);
  --btn-line:var(--line);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border-radius:999px;
  border:1px solid var(--btn-line);
  background:var(--btn-bg);
  color:var(--btn-fg);
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.3;
  text-align:center;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .22s var(--ease),background .2s linear,color .2s linear,border-color .2s linear;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--block{width:100%}

.btn--neon{
  --btn-bg:linear-gradient(120deg,var(--neon),#7C3AED);
  --btn-fg:#FFFFFF;
  --btn-line:transparent;
  box-shadow:0 10px 26px -10px rgba(168,85,247,.9);
}
.btn--neon:hover{box-shadow:0 16px 34px -12px rgba(168,85,247,1)}

.btn--amber{
  --btn-bg:linear-gradient(120deg,var(--amber),#FB923C);
  --btn-fg:#1E1206;
  --btn-line:transparent;
  box-shadow:0 10px 26px -12px rgba(245,158,11,.95);
}
.btn--amber:hover{box-shadow:0 16px 34px -14px rgba(245,158,11,1)}

.btn--ghost{
  --btn-bg:rgba(168,85,247,.06);
  --btn-fg:var(--muted);
  --btn-line:rgba(76,29,149,.9);
}
.btn--ghost:hover{
  --btn-fg:var(--paper);
  --btn-line:var(--neon);
  box-shadow:0 0 0 3px rgba(168,85,247,.14);
}

/* ---------- 05 标签 / 档案卡 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  padding:5px 11px;
  border-radius:4px;
  border:1px solid var(--line);
  color:var(--muted);
  background:rgba(168,85,247,.08);
  white-space:nowrap;
}
.tag--amber{color:#1E1206;background:var(--amber);border-color:transparent;font-weight:700}
.tag--cyan{color:#05222B;background:var(--cyan);border-color:transparent;font-weight:700}

.card{
  position:relative;
  background:linear-gradient(160deg,rgba(18,18,42,.96),rgba(10,10,18,.98));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(18px,2.4vw,30px);
  box-shadow:0 22px 46px -30px rgba(0,0,0,.95);
}
.card--archive::after{
  content:"";
  position:absolute;
  inset:8px -8px -8px 8px;
  border:1px solid rgba(76,29,149,.62);
  border-radius:var(--radius);
  background:rgba(18,18,42,.5);
  z-index:-1;
}
.card__label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:12px;
}

.mono-tag{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
  border:1px dashed rgba(76,29,149,.9);
  border-radius:6px;
  padding:4px 9px;
  white-space:nowrap;
}

/* ---------- 06 网格 / 图片容器 ---------- */
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.grid--wide-narrow{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}

.media{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(140deg,#12122A,#0A0A12);
  isolation:isolate;
}
.media::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(70% 70% at 78% 12%,rgba(168,85,247,.28),transparent 66%);
  pointer-events:none;
  z-index:0;
}
.media__img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media--16x9{aspect-ratio:16 / 9}
.media--4x3{aspect-ratio:4 / 3}
.media--1x1{aspect-ratio:1 / 1}
.media__caption{
  position:relative;
  z-index:1;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
  padding:10px 14px;
  border-top:1px solid rgba(76,29,149,.7);
  background:rgba(10,10,18,.6);
}

/* ---------- 07 面包屑 ---------- */
.breadcrumb{margin:0 0 clamp(20px,2.6vw,34px)}
.breadcrumb__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.05em;
  color:rgba(196,181,253,.75);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{
  content:"/";
  color:var(--line);
}
.breadcrumb__link{color:var(--muted);transition:color .18s linear}
.breadcrumb__link:hover{color:var(--cyan)}
.breadcrumb__item[aria-current="page"]{color:var(--paper)}

/* ---------- 08 可展开内容组 ---------- */
.disclosure{
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(18,18,42,.72);
  overflow:hidden;
  transition:border-color .2s linear,box-shadow .25s var(--ease);
}
.disclosure + .disclosure{margin-top:12px}
.disclosure[data-open]{border-color:rgba(168,85,247,.75);box-shadow:0 0 0 3px rgba(168,85,247,.1)}
.disclosure__trigger{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 18px;
  text-align:left;
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:600;
  color:var(--paper);
  cursor:pointer;
}
.disclosure__trigger:hover{color:var(--neon)}
.disclosure__icon{
  position:relative;
  flex:none;
  width:18px;
  height:18px;
}
.disclosure__icon::before,
.disclosure__icon::after{
  content:"";
  position:absolute;
  background:var(--neon);
  border-radius:2px;
  transition:transform .3s var(--ease),background .2s linear;
}
.disclosure__icon::before{left:0;top:8px;width:18px;height:2px}
.disclosure__icon::after{top:0;left:8px;width:2px;height:18px}
.disclosure[data-open] .disclosure__icon::after{transform:scaleY(0)}
.disclosure[data-open] .disclosure__icon::before{background:var(--amber)}
.disclosure__panel{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .32s var(--ease);
}
.disclosure[data-open] .disclosure__panel{grid-template-rows:1fr}
.disclosure__body{
  overflow:hidden;
  padding:0 18px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
}
.disclosure__body > *{margin:0 0 14px}
.disclosure__body > *:last-child{margin-bottom:18px}

/* ---------- 09 滚动显现 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .62s var(--ease),transform .62s var(--ease);
}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 10 头部：轨道 / 顶栏 / 抽屉 / 悬浮条 ---------- */
.site-header{
  position:relative;
  z-index:40;
}

.progress{
  position:fixed;
  top:0;
  left:0;
  width:0;
  height:3px;
  z-index:90;
  background:linear-gradient(90deg,var(--neon),var(--bolt) 55%,var(--amber));
  box-shadow:0 0 14px rgba(168,85,247,.85);
  pointer-events:none;
}

.skip-link{
  position:absolute;
  left:14px;
  top:-72px;
  z-index:200;
  padding:11px 20px;
  border-radius:0 0 12px 12px;
  background:var(--amber);
  color:#1E1206;
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0}

.topbar{
  position:sticky;
  top:0;
  z-index:55;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px clamp(14px,4vw,22px);
  background:var(--scrim);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid rgba(168,85,247,.5);
  background:rgba(168,85,247,.14);
  color:var(--paper);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  cursor:pointer;
  transition:background .2s linear,border-color .2s linear;
}
.nav-toggle:hover{background:rgba(168,85,247,.26);border-color:var(--neon)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px}
.nav-toggle__bars i{
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .25s var(--ease),opacity .2s linear;
}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:60;
  width:min(84vw,320px);
  display:flex;
  flex-direction:column;
  gap:20px;
  padding:26px 20px 24px;
  overflow-y:auto;
  transform:translateX(-102%);
  transition:transform .34s var(--ease);
  background:linear-gradient(180deg,#12122A 0%,#0A0A12 52%,#12122A 100%);
  border-right:1px solid var(--line);
  box-shadow:26px 0 60px rgba(0,0,0,.6);
}
.rail::after{
  content:"";
  position:absolute;
  top:0;
  right:-1px;
  width:1px;
  height:100%;
  background:linear-gradient(180deg,transparent,var(--neon) 28%,var(--bolt) 68%,transparent);
  opacity:.75;
}
.site-header[data-open] .rail{transform:translateX(0)}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand__mark{
  flex:none;
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  border-radius:12px;
  font-family:var(--font-mono);
  font-size:17px;
  font-weight:700;
  letter-spacing:-.02em;
  color:#0A0A12;
  background:linear-gradient(140deg,var(--neon),var(--bolt) 58%,var(--amber));
  box-shadow:0 0 0 1px var(--line),0 10px 24px -10px rgba(168,85,247,.9);
}
.brand__text{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand__name{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--paper);
  line-height:1.25;
}
.brand__tag{
  font-size:11.5px;
  line-height:1.4;
  color:rgba(196,181,253,.72);
  letter-spacing:.02em;
}
.brand--compact .brand__mark{width:38px;height:38px;font-size:15px;border-radius:10px}
.brand--compact .brand__name{font-size:16px}
.brand--compact .brand__tag{font-size:10.5px}

.rail__label{
  margin:0 0 -10px 6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:rgba(196,181,253,.5);
}

.rail__nav{flex:1 1 auto;min-height:0}

.navlist{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.navlist__item{display:block}
.navlist__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 14px;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  transition:color .2s linear,background .2s linear,box-shadow .2s linear;
}
.navlist__link::before{
  content:"";
  flex:none;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--line);
  transition:background .2s linear,transform .2s var(--ease),box-shadow .2s linear;
}
.navlist__link:hover{color:var(--paper);background:rgba(168,85,247,.12)}
.navlist__link:hover::before{background:var(--neon);transform:scale(1.3)}
.navlist__link[aria-current="page"]{
  color:var(--paper);
  background:linear-gradient(90deg,rgba(168,85,247,.3),rgba(45,156,219,.06));
  box-shadow:inset 0 0 0 1px rgba(168,85,247,.45);
}
.navlist__link[aria-current="page"]::before{
  background:var(--amber);
  box-shadow:0 0 12px var(--amber);
  transform:scale(1.3);
}
.navlist__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:-20px;
  top:50%;
  width:3px;
  height:22px;
  border-radius:0 3px 3px 0;
  transform:translateY(-50%);
  background:linear-gradient(180deg,var(--neon),var(--bolt));
  box-shadow:0 0 14px var(--neon);
}

.rail__actions{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:18px;
  border-top:1px solid rgba(76,29,149,.6);
}

.rail__meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

.scrim{
  position:fixed;
  inset:0;
  z-index:50;
  background:var(--scrim);
  opacity:0;
  visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s linear;
}
.site-header[data-open] .scrim{opacity:1;visibility:visible}

.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:48;
  display:flex;
  gap:10px;
  padding:10px clamp(12px,4vw,20px) calc(10px + env(safe-area-inset-bottom, 0px));
  background:rgba(10,10,18,.9);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
}
.dock .btn{flex:1 1 0;padding:12px 8px;font-size:14px}

body.nav-open{overflow:hidden}

/* ---------- 11 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,110px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(18,18,42,.96),rgba(10,10,18,.99) 72%);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:-1px;
  height:5px;
  pointer-events:none;
  background:repeating-linear-gradient(90deg,
    var(--neon) 0 22px, transparent 22px 30px,
    var(--bolt) 30px 52px, transparent 52px 60px,
    var(--amber) 60px 68px, transparent 68px 80px);
  opacity:.5;
}
.footer__glow{
  position:absolute;
  left:50%;
  top:-64px;
  width:min(680px,88%);
  height:128px;
  transform:translateX(-50%);
  pointer-events:none;
  background:radial-gradient(50% 100% at 50% 100%,rgba(168,85,247,.3),transparent 72%);
}
.footer__inner{
  position:relative;
  padding-block:clamp(40px,6vw,76px) clamp(22px,3vw,34px);
}
.footer__grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,3vw,40px);
}
.footer__note{
  margin:16px 0 0;
  max-width:34ch;
  font-size:14.5px;
  line-height:1.8;
  color:var(--muted);
}
.footer__title{
  position:relative;
  margin:0 0 16px;
  padding-bottom:10px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--bolt);
}
.footer__title::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  background:var(--neon);
}
.footer__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer__link{
  display:inline-block;
  font-size:15px;
  color:var(--muted);
  transition:color .18s linear,transform .18s var(--ease);
}
.footer__link:hover{color:var(--paper);transform:translateX(3px)}
.footer__list--contact{gap:14px}
.contact-line{display:flex;flex-direction:column;gap:3px}
.contact-line__key{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:rgba(196,181,253,.6);
}
.contact-line__val{
  font-size:15px;
  line-height:1.7;
  color:var(--paper);
  word-break:break-word;
}
.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 28px;
  margin-top:clamp(28px,4vw,52px);
  padding-top:20px;
  border-top:1px solid rgba(76,29,149,.6);
}
.footer__legal{
  margin:0;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:rgba(196,181,253,.72);
}

/* ---------- 12 平板 ---------- */
@media (min-width:700px){
  body{font-size:16.5px}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__brand{grid-column:1 / -1}
  .footer__col--contact{grid-column:1 / -1}
}

/* ---------- 13 桌面：固定侧边轨道 ---------- */
@media (min-width:1024px){
  body{
    padding-left:var(--rail-w);
    padding-bottom:0;
  }
  .topbar{display:none}
  .dock{display:none}
  .scrim{display:none}
  .progress{left:var(--rail-w)}

  .rail{
    width:var(--rail-w);
    transform:none;
    transition:none;
    box-shadow:none;
    padding:30px 22px 26px;
  }
  body.nav-open{overflow:auto}

  .footer__grid{grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr)) minmax(0,1.3fr)}
  .footer__brand{grid-column:auto}
  .footer__col--contact{grid-column:auto}
}

@media (min-width:1280px){
  :root{--content-max:1240px}
}

/* ---------- 14 动效偏好 ---------- */
@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 [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
  .btn:hover,
  .footer__link:hover{transform:none}
}