/* ============================================================
   电子游戏主站 · 共享站点样式  /assets/site.css
   深空蓝基底 · 霓虹紫入口 · 电光青数据 · 暖金积分
   ============================================================ */

:root{
  --ink-900:#050A1C;
  --ink-850:#071026;
  --ink-800:#0C1430;
  --ink-700:#101B3D;
  --line:#1B2650;
  --line-soft:rgba(27,38,80,.55);
  --violet:#9B6BFF;
  --cyan:#24E0D6;
  --gold:#F2B84B;
  --fog:#EAF0FF;
  --silver:#98A4C4;
  --dust:#61708F;
  --soda:#3DE8A0;
  --ember:#FF7A6B;

  --shell:1240px;
  --gutter:clamp(20px,4vw,48px);
  --grid-shift:0px;

  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;

  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background:var(--ink-900);
  color:var(--silver);
  font-family:var(--sans);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  position:relative;
}

/* 背景精密网格：随滚动以 0.15 倍速位移 */
body::before{
  content:"";
  position:fixed;
  inset:-12%;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(27,38,80,.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27,38,80,.55) 1px, transparent 1px);
  background-size:64px 64px;
  transform:translate3d(0,var(--grid-shift),0);
  opacity:.75;
}

.site-header,main,.site-footer,.skip-link{position:relative;z-index:1;}

h1,h2,h3,h4{
  margin:0 0 .6em;
  color:var(--fog);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.24;
}
h1{font-size:clamp(32px,4.6vw,56px);}
h2{font-size:clamp(24px,2.8vw,34px);}
h3{font-size:clamp(19px,2vw,24px);}

p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}

ul,ol{margin:0 0 1.2em;padding-left:1.3em;}

a{color:var(--cyan);text-decoration-thickness:1px;text-underline-offset:3px;}

img{max-width:100%;height:auto;}

button,input,select,textarea{font:inherit;color:inherit;}

hr{border:0;height:1px;background:var(--line);margin:0;}

::selection{background:rgba(155,107,255,.4);color:#fff;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}

/* ---------- 布局基元 ---------- */
.site-shell{
  width:min(100% - (var(--gutter) * 2),var(--shell));
  margin-inline:auto;
}

.section{
  padding-block:clamp(56px,8vw,116px);
}
.section + .section{
  border-top:1px solid var(--line);
}

.prose{max-width:36em;}

.mono{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 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));}

/* ---------- 索引标签 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  font-family:var(--mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--violet);
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:currentColor;
}

/* ---------- 堆叠面板 ---------- */
.panel{
  position:relative;
  padding:clamp(20px,3vw,34px);
  background:linear-gradient(180deg,rgba(12,20,48,.96),rgba(12,20,48,.74));
  border:1px solid var(--line);
}
.panel__label{
  display:block;
  margin-bottom:12px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--violet);
}
.panel__title{
  margin:0 0 12px;
  font-size:clamp(20px,2.4vw,26px);
  color:var(--fog);
  letter-spacing:-.02em;
}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--fog);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  overflow:hidden;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.btn::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(234,240,255,.18),transparent);
  transform:translateX(-110%);
  transition:transform .6s ease;
}
.btn:hover::after{transform:translateX(110%);}
.btn--primary{
  border-color:var(--violet);
  background:linear-gradient(120deg,rgba(155,107,255,.3),rgba(36,224,214,.16));
}
.btn--primary:hover{border-color:var(--cyan);color:#fff;}
.btn--ghost{color:var(--silver);}
.btn--ghost:hover{border-color:var(--violet);color:var(--fog);}

/* ---------- 复制按钮 ---------- */
.copy-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border:1px solid var(--line);
  background:rgba(12,20,48,.7);
  color:var(--silver);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  line-height:1.4;
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.copy-btn:hover{border-color:var(--violet);color:var(--fog);}
.copy-btn[data-copied]{
  border-color:rgba(61,232,160,.6);
  color:var(--soda);
  background:rgba(61,232,160,.1);
}

/* ---------- 徽标 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid var(--line);
  background:rgba(12,20,48,.6);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.6;
  color:var(--silver);
}
.tag--cyan{border-color:rgba(36,224,214,.45);color:var(--cyan);}
.tag--gold{border-color:rgba(242,184,75,.45);color:var(--gold);}
.tag--violet{border-color:rgba(155,107,255,.5);color:var(--violet);}

/* ---------- 面包屑 ---------- */
.crumb{padding-block:clamp(18px,3vw,28px);}
.crumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--dust);
}
.crumb__item{display:inline-flex;align-items:center;gap:8px;}
.crumb__item + .crumb__item::before{content:"/";color:var(--line);}
.crumb__link{color:var(--silver);text-decoration:none;transition:color .2s ease;}
.crumb__link:hover{color:var(--cyan);}
.crumb__current{color:var(--fog);}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  background:
    linear-gradient(140deg,rgba(155,107,255,.14),rgba(36,224,214,.06)),
    var(--ink-800);
  border:1px solid var(--line);
}
.media-frame > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(36,224,214,.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36,224,214,.07) 1px, transparent 1px);
  background-size:48px 48px;
}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  background:rgba(5,10,28,.88);
  border-top:1px solid var(--line);
  border-right:1px solid var(--line);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--fog);
}
.media-frame--16x9{aspect-ratio:16 / 9;}
.media-frame--21x9{aspect-ratio:21 / 9;}
.media-frame--4x3{aspect-ratio:4 / 3;}
.media-frame--1x1{aspect-ratio:1 / 1;}
.media-frame--3x4{aspect-ratio:3 / 4;}

/* ---------- 滚动显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .5s ease,transform .5s var(--ease);
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ============================================================
   头部
   ============================================================ */
.skip-link{
  position:absolute;
  left:var(--gutter);
  top:-80px;
  z-index:200;
  padding:12px 18px;
  background:var(--violet);
  color:#0B0620;
  font-family:var(--mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  transition:top .2s ease;
}
.skip-link:focus{top:8px;}

.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:linear-gradient(180deg,rgba(5,10,28,.97),rgba(5,10,28,.9));
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:0;
  z-index:5;
  width:0;
  height:2px;
  pointer-events:none;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 62%,var(--gold));
  transition:width .1s linear;
}

/* 上层：实验室状态条 */
.header-top{
  max-height:56px;
  overflow:hidden;
  background:var(--ink-800);
  border-bottom:1px solid var(--line);
  transition:max-height .34s var(--ease),opacity .28s ease;
}
.site-header.is-scrolled .header-top{
  max-height:0;
  opacity:0;
}
.header-top__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding-block:9px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.1em;
}
.header-top__brand{color:var(--fog);}
.header-top__note{color:var(--dust);}

/* 下层：常驻栏目层 */
.header-main{
  position:relative;
  border-bottom:1px solid var(--line);
}
.header-main__inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.4vw,32px);
  min-height:76px;
  transition:min-height .28s var(--ease);
}
.site-header.is-scrolled .header-main__inner{min-height:64px;}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  margin-inline-end:auto;
  text-decoration:none;
}
.brand__mark{
  position:relative;
  flex:0 0 auto;
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  border:1px solid rgba(155,107,255,.6);
  background:linear-gradient(140deg,rgba(155,107,255,.24),rgba(36,224,214,.1));
  font-family:var(--mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--cyan);
}
.brand__mark::before,
.brand__mark::after{
  content:"";
  position:absolute;
  width:6px;
  height:6px;
  border:0 solid var(--cyan);
}
.brand__mark::before{top:-1px;left:-1px;border-top-width:1.5px;border-left-width:1.5px;}
.brand__mark::after{bottom:-1px;right:-1px;border-bottom-width:1.5px;border-right-width:1.5px;}

.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--fog);
}
.brand__sub{
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--dust);
}

/* 汉堡按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  border:1px solid var(--line);
  background:rgba(12,20,48,.9);
  color:var(--fog);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--violet);color:var(--cyan);}
.nav-toggle__bars{display:grid;gap:4px;width:16px;}
.nav-toggle__bars span{
  display:block;
  height:1.5px;
  background:var(--cyan);
  transition:transform .24s var(--ease),opacity .24s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* 导航 */
.nav{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,24px);
}
.nav__list{
  display:flex;
  align-items:center;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.nav__item{display:block;}
.nav__link{
  display:inline-block;
  padding:9px clamp(8px,1vw,12px);
  border:1px solid transparent;
  color:var(--silver);
  font-size:clamp(13px,1.05vw,15px);
  font-weight:500;
  line-height:1.35;
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.nav__link:hover{
  color:var(--fog);
  background:rgba(155,107,255,.1);
  border-color:rgba(155,107,255,.3);
}
.nav__link[aria-current="page"]{
  color:var(--cyan);
  border-color:rgba(36,224,214,.42);
  background:rgba(36,224,214,.07);
}

.nav-cta{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border:1px solid var(--violet);
  background:linear-gradient(120deg,rgba(155,107,255,.26),rgba(36,224,214,.14));
  color:var(--fog);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.3;
  text-decoration:none;
  white-space:nowrap;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.nav-cta::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(234,240,255,.3),transparent);
  transform:translateX(-110%);
  transition:transform .6s ease;
}
.nav-cta:hover{
  border-color:var(--cyan);
  color:#fff;
  box-shadow:0 0 0 1px rgba(36,224,214,.3),0 0 26px rgba(36,224,214,.22);
}
.nav-cta:hover::after{transform:translateX(110%);}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  margin-top:clamp(56px,8vw,120px);
  background:linear-gradient(180deg,rgba(7,16,38,.6),#04081A 40%);
  border-top:1px solid var(--line);
}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.7fr) repeat(2,minmax(0,1fr)) minmax(0,1.25fr);
  gap:clamp(28px,3.6vw,56px);
  padding-block:clamp(44px,6.5vw,84px);
}

.footer-brand{max-width:34em;}
.brand--footer{margin-inline-end:0;margin-bottom:20px;}
.footer-brand__text{
  margin:0 0 12px;
  font-size:15px;
  line-height:1.85;
  color:var(--silver);
}
.footer-brand__meta{
  margin:0;
  font-size:13px;
  line-height:1.8;
  color:var(--dust);
}

.footer-col__title{
  margin:0 0 16px;
  font-family:var(--mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--cyan);
}
.footer-col__list{
  margin:0;
  padding:0;
  list-style:none;
  display:grid;
  gap:9px;
}
.footer-col__list a{
  color:var(--silver);
  font-size:15px;
  text-decoration:none;
  transition:color .2s ease;
}
.footer-col__list a:hover{color:var(--fog);}

.footer-col__list--contact{gap:12px;}
.footer-col__list--contact li{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:4px 12px;
}
.footer-key{
  flex:0 0 auto;
  min-width:62px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--dust);
}
.footer-val{
  color:var(--fog);
  font-size:14px;
  line-height:1.7;
  word-break:break-word;
}

.footer-base{border-top:1px solid var(--line);}
.footer-base__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 28px;
  padding-block:22px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--dust);
}
.footer-base__copy,
.footer-base__meta{margin:0;}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr));}
  .footer-col--contact{grid-column:1 / -1;}
  .footer-col__list--contact{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:980px){
  :root{--gutter:20px;}

  .nav-toggle{display:inline-flex;}

  .nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    max-height:calc(100vh - 96px);
    overflow-y:auto;
    background:var(--ink-800);
    border-bottom:1px solid var(--line);
    padding-bottom:20px;
    box-shadow:0 28px 48px -28px rgba(0,0,0,.85);
  }
  .nav[data-open]{display:flex;}

  .nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding-inline:var(--gutter);
  }
  .nav__item{border-bottom:1px solid var(--line);}
  .nav__link{
    display:block;
    padding:14px 2px;
    border:0;
    font-size:16px;
  }
  .nav__link:hover{background:transparent;color:var(--cyan);}
  .nav__link[aria-current="page"]{
    border:0;
    background:transparent;
    padding-left:14px;
    position:relative;
  }
  .nav__link[aria-current="page"]::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    width:6px;
    height:6px;
    margin-top:-3px;
    background:var(--cyan);
  }
  .nav-cta{
    margin:18px var(--gutter) 0;
    justify-content:center;
    padding:14px 18px;
  }

  .header-main__inner{min-height:64px;}
  .site-header.is-scrolled .header-main__inner{min-height:58px;}

  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:720px){
  body{font-size:15.5px;line-height:1.8;}

  .header-top__note{display:none;}
  .header-top__inner{justify-content:flex-start;font-size:11px;letter-spacing:.06em;}

  .brand__sub{display:none;}

  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-col--contact{grid-column:auto;}
  .footer-col__list--contact{grid-template-columns:minmax(0,1fr);}

  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr);}

  .footer-base__inner{flex-direction:column;align-items:flex-start;}
}

@media (max-width:420px){
  .nav-toggle__label{display:none;}
}

/* ============================================================
   无障碍动效偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  body::before{transform:none;}
  [data-reveal]{opacity:1;transform:none;}
  .scroll-progress{transition:none;}
}