/* ============================================================
   电玩城大厅 — 共享样式 /assets/site.css
   深紫黑暗场 + 霓虹强调 + 展览画册式框景
   ============================================================ */

:root{
  --bg:#0B0616;
  --panel:#1A1030;
  --cyan:#2BF5E0;
  --magenta:#FF3DBE;
  --yellow:#FFE24A;
  --blue:#4C7BFF;
  --orange:#FF9A3C;
  --jade:#0E3B3A;
  --wine:#3A0E24;
  --ink:#F2EEF9;
  --muted:#A79CC4;

  --line:rgba(76,123,255,.30);
  --line-soft:rgba(167,156,196,.16);
  --glass:rgba(26,16,48,.72);

  --rail-w:88px;
  --bar-h:68px;

  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular","Cascadia Mono",Consolas,"Noto Sans Mono","Microsoft YaHei",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--bar-h) + 24px);}
body{
  margin:0;
  min-height:100vh;
  padding-left:var(--rail-w);
  padding-top:var(--bar-h);
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0;}
table{border-collapse:collapse;width:100%;}
address{font-style:normal;}

/* ---------- 全屏氛围：霓虹光晕 + 扫描线 ---------- */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(58% 44% at 10% 6%, rgba(255,61,190,.17), transparent 70%),
    radial-gradient(52% 40% at 92% 10%, rgba(43,245,224,.14), transparent 70%),
    radial-gradient(74% 52% at 50% 104%, rgba(76,123,255,.14), transparent 72%);
}
body::after{
  content:"";position:fixed;inset:-10% 0;z-index:1;pointer-events:none;
  background-image:repeating-linear-gradient(to bottom, rgba(242,238,249,.030) 0 1px, transparent 1px 4px);
  animation:scan-drift 8s linear infinite;
}
@keyframes scan-drift{
  from{transform:translateY(-4px);}
  to{transform:translateY(4px);}
}

/* ---------- 焦点 ---------- */
:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:3px;
  border-radius:1px;
}

/* ---------- 排版基础 ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:300;line-height:1.15;letter-spacing:-.02em;}
h1{font-size:clamp(2.6rem,6.4vw,5.6rem);}
h2{font-size:clamp(1.9rem,3.6vw,3.1rem);}
h3{font-size:clamp(1.2rem,1.8vw,1.6rem);font-weight:500;letter-spacing:-.01em;}
p{max-width:720px;color:rgba(242,238,249,.86);}
strong{color:var(--orange);font-weight:600;}
em{color:var(--cyan);font-style:normal;}

.mono{font-family:var(--font-mono);font-size:.94em;font-weight:500;letter-spacing:.03em;color:var(--yellow);}

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

/* ---------- 容器 & 布局工具 ---------- */
.container{width:min(100% - 40px, 1440px);margin-inline:auto;}

.section{padding:clamp(52px,7.5vw,116px) 0;position:relative;}
.section--jade{background:linear-gradient(180deg,rgba(14,59,58,.55),rgba(11,6,22,0));}
.section--wine{background:linear-gradient(180deg,rgba(58,14,36,.55),rgba(11,6,22,0));}

.grid{display:grid;gap:clamp(16px,2vw,28px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}

.data-grid{
  display:grid;gap:1px;background:var(--line-soft);
  border:1px solid var(--line-soft);
}
.data-grid > *{
  background:var(--bg);
  padding:14px 18px;
  transition:background .18s ease;
}
.data-grid > *:hover{background:rgba(76,123,255,.10);}

@media (max-width:1080px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:720px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr);}
}

/* ---------- 小标签 / 索引 ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--muted);
  display:block;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);
  border:1px solid rgba(43,245,224,.40);
  background:rgba(43,245,224,.06);
  border-radius:2px;
  white-space:nowrap;
}

/* ---------- 框景 ---------- */
.frame{
  position:relative;
  border:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(26,16,48,.90),rgba(11,6,22,.66));
}
.frame::before,.frame::after{
  content:"";position:absolute;width:14px;height:14px;
  border:1px solid var(--cyan);opacity:.75;pointer-events:none;
  box-shadow:0 0 10px rgba(43,245,224,.45);
}
.frame::before{top:-1px;left:-1px;border-right:0;border-bottom:0;}
.frame::after{bottom:-1px;right:-1px;border-left:0;border-top:0;}

/* ---------- 图片容器（页面阶段放 img） ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 9;
  border:1px solid var(--line-soft);
  background:
    linear-gradient(135deg,rgba(76,123,255,.12),rgba(255,61,190,.10)),
    var(--panel);
}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame > img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease);
}
.media-frame:hover > img{transform:scale(1.03);}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(to bottom, rgba(11,6,22,.22) 0 1px, transparent 1px 3px);
  mix-blend-mode:multiply;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;
  border:1px solid var(--line);
  border-radius:2px;
  font-size:14px;letter-spacing:.06em;color:var(--ink);
  transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn--primary{
  color:var(--cyan);
  border-color:rgba(43,245,224,.55);
  background:linear-gradient(120deg,rgba(43,245,224,.16),rgba(76,123,255,.16));
  box-shadow:0 0 18px rgba(43,245,224,.18);
}
.btn--primary:hover{
  background:linear-gradient(120deg,rgba(43,245,224,.30),rgba(76,123,255,.26));
  box-shadow:0 0 28px rgba(43,245,224,.38);
}
.btn--ghost:hover{
  color:var(--magenta);
  border-color:rgba(255,61,190,.62);
  box-shadow:0 0 20px rgba(255,61,190,.24);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{content:"/";color:rgba(167,156,196,.35);}
.breadcrumb a{transition:color .2s ease;}
.breadcrumb a:hover{color:var(--cyan);}

/* ---------- 显现动效 ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(12px);}
html.js [data-reveal].is-visible{
  opacity:1;transform:none;
  transition:opacity .32s ease-out,transform .32s ease-out;
}

/* ============================================================
   页头
   ============================================================ */
.site-header{position:relative;z-index:60;}

.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;
  z-index:400;
  background:linear-gradient(90deg,var(--cyan),var(--magenta) 48%,var(--yellow));
  box-shadow:0 0 14px rgba(43,245,224,.65);
  transition:width .12s linear;
}

.skip-link{
  position:fixed;top:10px;left:50%;z-index:500;
  transform:translate(-50%,-160%);
  padding:10px 20px;
  background:var(--cyan);color:#0B0616;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  border-radius:2px;
  box-shadow:0 0 22px rgba(43,245,224,.6);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translate(-50%,0);}

/* 左侧装饰轨道 */
.brand-rail{
  position:fixed;top:0;bottom:0;left:0;width:var(--rail-w);
  z-index:120;
  overflow:hidden;
  background:linear-gradient(180deg,rgba(26,16,48,.96),rgba(11,6,22,.99));
  border-right:1px solid var(--line-soft);
}
.brand-rail::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(to bottom, rgba(43,245,224,.075) 0 1px, transparent 1px 46px);
}
.brand-rail::after{
  content:"";position:absolute;top:14%;left:0;width:1px;height:26%;
  background:linear-gradient(180deg,transparent,var(--cyan),transparent);
  box-shadow:0 0 12px rgba(43,245,224,.8);
}

/* 固定顶栏 */
.header-bar{
  position:fixed;top:0;left:var(--rail-w);right:0;
  height:var(--bar-h);
  z-index:130;
  display:flex;align-items:center;gap:18px;
  padding:0 clamp(16px,3vw,34px);
  background:rgba(11,6,22,.84);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
}
.header-bar::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(76,123,255,.55) 40%,rgba(255,61,190,.5),transparent);
}

.brand{display:flex;align-items:center;gap:12px;margin-right:auto;min-width:0;}
.brand-mark{
  flex:0 0 auto;
  width:34px;height:34px;
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;color:#0B0616;
  background:linear-gradient(140deg,var(--cyan),var(--blue));
  clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
  box-shadow:0 0 18px rgba(43,245,224,.45);
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{
  font-family:var(--font-display);
  font-size:17px;font-weight:700;letter-spacing:.04em;line-height:1.25;
  color:var(--ink);
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.14em;line-height:1.4;
  color:var(--muted);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

.quick-rail{display:flex;align-items:center;gap:8px;}
.quick-link{
  display:inline-flex;align-items:center;
  padding:7px 14px;
  font-size:13px;letter-spacing:.04em;
  color:var(--muted);
  border:1px solid var(--line-soft);
  border-radius:2px;
  white-space:nowrap;
  transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.quick-link:hover{
  color:var(--cyan);
  border-color:rgba(43,245,224,.55);
  background:rgba(43,245,224,.08);
  box-shadow:0 0 16px rgba(43,245,224,.22);
}
.quick-link--cta{
  color:var(--magenta);
  border-color:rgba(255,61,190,.45);
  box-shadow:0 0 14px rgba(255,61,190,.18);
}
.quick-link--cta:hover{
  color:#0B0616;
  background:var(--magenta);
  border-color:var(--magenta);
  box-shadow:0 0 24px rgba(255,61,190,.60);
}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;
  border:1px solid var(--line-soft);
  border-radius:2px;
  z-index:170;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-toggle:hover{border-color:rgba(43,245,224,.55);box-shadow:0 0 16px rgba(43,245,224,.22);}
.nav-toggle-bars{
  position:relative;display:block;width:20px;height:2px;
  background:var(--cyan);
  box-shadow:0 0 8px rgba(43,245,224,.6);
  transition:background .2s ease,box-shadow .2s ease;
}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:20px;height:2px;
  background:var(--cyan);
  transition:transform .22s var(--ease);
}
.nav-toggle-bars::before{top:-7px;}
.nav-toggle-bars::after{top:7px;}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars{background:transparent;box-shadow:none;}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(7px) rotate(45deg);}
[data-nav-toggle][aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-7px) rotate(-45deg);}

/* 侧边轨道导航 */
.site-nav{
  position:fixed;top:var(--bar-h);bottom:0;left:0;
  width:var(--rail-w);
  z-index:125;
  padding:18px 0 26px;
  overflow-y:auto;
  overscroll-behavior:contain;
  scrollbar-width:thin;
  scrollbar-color:rgba(76,123,255,.4) transparent;
}
.site-nav::-webkit-scrollbar{width:4px;}
.site-nav::-webkit-scrollbar-thumb{background:rgba(76,123,255,.4);}

.nav-list{display:flex;flex-direction:column;align-items:center;gap:6px;}
.nav-item{width:100%;display:flex;justify-content:center;}
.nav-link{
  width:70px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  padding:10px 4px;
  text-align:center;
  font-size:13px;line-height:1.28;color:var(--muted);
  border:1px solid transparent;border-radius:2px;
  transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-index{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  color:rgba(167,156,196,.70);
  transition:color .2s ease;
}
.nav-link:hover{
  color:var(--ink);
  border-color:var(--line);
  background:rgba(76,123,255,.10);
}
.nav-link[aria-current="page"]{
  color:var(--cyan);
  border-color:rgba(43,245,224,.55);
  background:rgba(43,245,224,.08);
  box-shadow:inset 0 0 18px rgba(43,245,224,.14),0 0 16px rgba(43,245,224,.22);
  animation:neon-breath 4s ease-in-out infinite;
}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan);}

@keyframes neon-breath{
  0%,100%{box-shadow:inset 0 0 18px rgba(43,245,224,.12),0 0 12px rgba(43,245,224,.18);}
  50%{box-shadow:inset 0 0 20px rgba(43,245,224,.20),0 0 24px rgba(43,245,224,.42);}
}

/* 遮罩 */
.nav-scrim{
  position:fixed;inset:0;z-index:140;
  background:rgba(11,6,22,.74);
  backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .28s ease,visibility .28s ease;
}
body.nav-open .nav-scrim{opacity:1;visibility:visible;pointer-events:auto;}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;z-index:2;
  margin-top:clamp(44px,6vw,92px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,6,22,0) 0%,rgba(26,16,48,.72) 26%,#0B0616 100%);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;
  width:min(240px,42%);height:1px;
  background:linear-gradient(90deg,var(--cyan),transparent);
  box-shadow:0 0 14px rgba(43,245,224,.7);
}
.footer-inner{padding:clamp(46px,6.5vw,86px) 0 28px;}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(230px,1.6fr) repeat(4,minmax(110px,1fr));
  gap:34px 36px;
}
.footer-col--brand{display:flex;flex-direction:column;gap:12px;max-width:340px;}
.footer-brand{
  font-family:var(--font-display);
  font-size:22px;font-weight:700;letter-spacing:.04em;
  color:var(--ink);
}
.footer-note{font-size:14px;line-height:1.75;color:var(--muted);max-width:320px;}
.footer-version{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(167,156,196,.8);
}

.footer-title{
  font-family:var(--font-mono);
  font-size:11px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:14px;
}
.footer-list{display:flex;flex-direction:column;gap:9px;}
.footer-item{display:block;}
.footer-link{
  display:inline-block;
  font-size:14px;line-height:1.6;color:var(--muted);
  transition:color .2s ease,transform .2s ease;
}
.footer-link:hover{color:var(--cyan);transform:translateX(4px);}
.footer-text{font-size:14px;line-height:1.6;color:rgba(167,156,196,.66);}

.footer-meta{
  margin-top:clamp(30px,4vw,48px);
  padding-top:22px;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);
}
.footer-legal{max-width:none;font-size:12.5px;color:var(--muted);}
.footer-contact{display:flex;flex-wrap:wrap;gap:8px 22px;max-width:none;}
.footer-contact-item{display:inline-flex;align-items:center;}
.footer-contact-item .mono{font-size:12.5px;color:var(--yellow);}

.footer-tip{
  margin-top:14px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.12em;
  color:rgba(167,156,196,.62);
  max-width:none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .brand-sub{display:none;}
  .footer-grid{grid-template-columns:minmax(200px,1.4fr) repeat(3,minmax(110px,1fr));}
  .footer-col--brand{grid-column:1 / -1;max-width:none;}
}

@media (max-width:900px){
  :root{--rail-w:0px;--bar-h:60px;}

  body{padding-left:0;font-size:16px;}
  body::before{background:
    radial-gradient(70% 38% at 12% 4%, rgba(255,61,190,.16), transparent 70%),
    radial-gradient(66% 34% at 90% 8%, rgba(43,245,224,.13), transparent 70%),
    radial-gradient(80% 45% at 50% 102%, rgba(76,123,255,.14), transparent 72%);}

  .brand-rail{display:none;}
  .header-bar{left:0;padding:0 16px;gap:12px;}
  .quick-rail{display:none;}
  .nav-toggle{display:inline-flex;}

  .site-nav{
    top:0;bottom:0;left:auto;right:0;
    width:min(320px,84vw);
    padding:80px 18px 30px;
    background:linear-gradient(180deg,#160D2B,#0B0616);
    border-left:1px solid var(--line);
    box-shadow:-26px 0 64px rgba(0,0,0,.62);
    transform:translateX(103%);
    transition:transform .3s var(--ease);
    z-index:150;
  }
  .site-nav[data-open="true"]{transform:translateX(0);}

  .nav-list{align-items:stretch;gap:8px;}
  .nav-item{justify-content:stretch;}
  .nav-link{
    flex-direction:row;justify-content:flex-start;align-items:center;gap:14px;
    width:100%;padding:14px 16px;
    text-align:left;font-size:16px;
    border:1px solid var(--line-soft);
    background:rgba(26,16,48,.55);
  }
  .nav-index{font-size:11px;letter-spacing:.16em;}

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px;}
  .footer-col--brand{grid-column:1 / -1;}
  .footer-meta{flex-direction:column;align-items:flex-start;}
}

@media (max-width:560px){
  .container{width:min(100% - 32px,1440px);}
  .brand-name{font-size:15px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-contact{flex-direction:column;gap:6px;}
}

/* ============================================================
   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;
  }
  body::after{animation:none;}
  html.js [data-reveal],
  html.js [data-reveal].is-visible{opacity:1;transform:none;}
  .media-frame:hover > img{transform:none;}
  .footer-link:hover{transform:none;}
}