/* ============================================================
   爱游戏主站 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 通用组件
   ============================================================ */

:root{
  --paper:#F7FAF9;
  --paper-warm:#FBF6EE;
  --mint:#00C9A7;
  --mint-soft:#C9F2E8;
  --mint-ink:#067A6A;
  --electric:#2D7DFF;
  --amber:#FF9F1C;
  --amber-soft:#FFEFD6;
  --amber-ink:#B26A00;
  --ink:#14181B;
  --graphite:#5B6670;
  --line:#DEE6E3;
  --white:#FFFFFF;

  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-display:"PingFang SC","Microsoft YaHei","Noto Sans SC","Heiti SC",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Courier New",monospace;

  --gap-page:clamp(18px,4vw,32px);
  --radius-card:18px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,picture,svg,canvas,video{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;}
a{color:var(--electric);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
a:hover{color:var(--mint-ink);}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.28;
  margin:0 0 .6em;
  color:var(--ink);
}
p{margin:0 0 1em;}
hr{border:0;border-top:1px solid var(--line);margin:0;}
:focus-visible{outline:2px solid var(--electric);outline-offset:3px;border-radius:4px;}

/* ---------- 容器 ---------- */
.shell{
  width:calc(100% - (var(--gap-page) * 2));
  max-width:1240px;
  margin-inline:auto;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-72px;
  z-index:200;
  padding:10px 20px;
  border-radius:var(--radius-pill);
  background:var(--ink);
  color:var(--white);
  font-size:14px;
  font-weight:600;
  text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:12px;color:var(--white);}

/* ============================================================
   页头
   ============================================================ */
.site-header{
  position:relative;
  background:var(--paper);
  z-index:60;
}

/* —— 上层：品牌说明条 —— */
.brand-bar{
  background:var(--paper-warm);
  border-bottom:1px solid var(--line);
}
.brand-bar__inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:58px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:900;
  font-size:19px;
  letter-spacing:-.03em;
  flex:0 0 auto;
}
.brand:hover{color:var(--ink);}
.brand__mark{
  width:14px;
  height:14px;
  border-radius:4px 9px 4px 9px;
  background:var(--mint);
  box-shadow:0 0 0 3px var(--mint-soft);
  flex:0 0 auto;
}
.brand__name{white-space:nowrap;}
.brand-bar__motto{
  position:relative;
  margin:0;
  padding-left:18px;
  font-size:13.5px;
  letter-spacing:.08em;
  color:var(--graphite);
}
.brand-bar__motto::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:1px;
  height:16px;
  background:var(--line);
  transform:translateY(-50%);
}
.brand-bar__tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
}
.tool-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 15px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--white);
  color:var(--graphite);
  font-size:13.5px;
  font-weight:600;
  text-decoration:none;
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.tool-link:hover{border-color:var(--mint-ink);color:var(--mint-ink);}
.tool-link--search::after{content:"⌕";font-size:15px;line-height:1;}

/* —— 下层：栏目导航 —— */
.main-nav{
  position:relative;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.main-nav__inner{
  display:flex;
  align-items:center;
  min-height:56px;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  flex-wrap:wrap;
}
.nav-list a{
  position:relative;
  display:block;
  padding:16px 15px;
  color:var(--graphite);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  text-decoration:none;
  transition:color .24s var(--ease);
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:15px;
  right:15px;
  bottom:11px;
  height:2px;
  border-radius:2px;
  background:var(--mint);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s var(--ease);
}
.nav-list a:hover{color:var(--ink);}
.nav-list a:hover::after,
.nav-list a:focus-visible::after{transform:scaleX(1);}
.nav-list a[aria-current="page"]{color:var(--ink);font-weight:700;}
.nav-list a[aria-current="page"]::after{transform:scaleX(1);}

/* —— 移动导航按钮 —— */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin:9px 0;
  padding:8px 17px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:var(--white);
  color:var(--ink);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.nav-toggle:hover{border-color:var(--mint-ink);color:var(--mint-ink);}
.nav-toggle__bars{
  position:relative;
  display:inline-block;
  width:16px;
  height:10px;
  flex:0 0 auto;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:1.5px;
  background:currentColor;
  transition:transform .28s var(--ease);
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{bottom:0;}
[data-nav][data-open] .nav-toggle__bars::before{transform:translateY(4.2px) rotate(45deg);}
[data-nav][data-open] .nav-toggle__bars::after{transform:translateY(-4.2px) rotate(-45deg);}
.nav-toggle__label{line-height:1;}

/* —— 球队徽章带 —— */
.badge-strip{
  position:relative;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding:11px 0;
}
.badge-strip__track{
  display:flex;
  align-items:center;
  gap:10px;
  overflow-x:auto;
  overscroll-behavior-x:contain;
  scroll-snap-type:x proximity;
  padding-block:3px;
  padding-inline:max(var(--gap-page),calc((100% - 1240px) / 2));
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.badge-strip__track::-webkit-scrollbar{display:none;}
.badge-strip__track:focus-visible{outline:2px solid var(--electric);outline-offset:-2px;}
.badge{
  flex:0 0 auto;
  scroll-snap-align:start;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 16px 6px 7px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:var(--white);
  color:var(--graphite);
  font-size:13.5px;
  font-weight:600;
  white-space:nowrap;
}
.badge__mark{
  display:grid;
  place-items:center;
  width:26px;
  height:26px;
  border-radius:50%;
  background:var(--mint-soft);
  color:var(--mint-ink);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:-.02em;
}

/* —— 滚动进度 —— */
.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:var(--mint);
  transform:scaleX(0);
  transform-origin:left center;
  z-index:5;
  pointer-events:none;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  margin-top:clamp(64px,9vw,120px);
  background:var(--paper-warm);
  border-top:1px solid var(--line);
  padding:clamp(40px,5vw,64px) 0 26px;
}

/* —— 五步内容路线 —— */
.step-track{margin-bottom:clamp(36px,4.5vw,56px);}
.step-list{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:0 18px;
}
.step{
  position:relative;
  padding-top:17px;
  border-top:2px solid var(--line);
}
.step::before{
  content:"";
  position:absolute;
  top:-6px;
  left:0;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--paper-warm);
  border:2px solid var(--line);
}
.step:first-child{border-top-color:var(--mint);}
.step:first-child::before{background:var(--mint);border-color:var(--mint);}
.step:last-child::before{background:var(--amber);border-color:var(--amber);}
.step__num{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--graphite);
}
.step__label{
  display:block;
  margin-top:6px;
  font-size:14px;
  font-weight:600;
  line-height:1.55;
  color:var(--ink);
}

/* —— 四栏信息区 —— */
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.5fr 1fr;
  gap:clamp(24px,3vw,44px);
  padding-bottom:clamp(28px,3.5vw,40px);
  border-bottom:1px solid var(--line);
}
.footer-col{min-width:0;}
.footer-brand{
  font-family:var(--font-display);
  font-size:20px;
  font-weight:900;
  letter-spacing:-.03em;
  color:var(--ink);
  margin:0 0 12px;
}
.footer-note{
  margin:10px 0 0;
  font-size:13.5px;
  line-height:1.85;
  color:var(--graphite);
  max-width:40ch;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  letter-spacing:.07em;
  color:var(--ink);
  margin:0 0 14px;
}
.footer-list{
  display:flex;
  flex-direction:column;
  gap:9px;
  font-size:14px;
}
.footer-list a{
  color:var(--graphite);
  text-decoration:none;
  transition:color .24s var(--ease);
}
.footer-list a:hover{color:var(--mint-ink);}
.footer-list--plain li{
  font-size:13.5px;
  line-height:1.7;
  color:var(--graphite);
}

/* —— 底行 —— */
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:22px;
  font-size:13px;
  color:var(--graphite);
}
.footer-legal__copy{margin:0;}
.legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
}
.legal-links a{
  color:var(--graphite);
  text-decoration:none;
  transition:color .24s var(--ease);
}
.legal-links a:hover{color:var(--mint-ink);text-decoration:underline;}

/* ============================================================
   页面通用组件（供后续页面 CSS 继承）
   ============================================================ */

/* —— 栏目页头 —— */
.page-head{
  padding:clamp(36px,6vw,72px) 0 clamp(24px,3vw,34px);
  border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--mint-ink);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  background:var(--mint);
  flex:0 0 auto;
}
.page-title{
  font-size:clamp(32px,5.2vw,56px);
  font-weight:900;
  letter-spacing:-.035em;
  margin:0 0 .5em;
}
.lede{
  max-width:62ch;
  font-size:clamp(16px,1.4vw,18px);
  line-height:1.9;
  color:var(--graphite);
  margin:0;
}

/* —— 面包屑 —— */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 20px;
  font-size:13px;
  color:var(--graphite);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--graphite);text-decoration:none;}
.breadcrumb a:hover{color:var(--mint-ink);text-decoration:underline;}

/* —— 编号章节 —— */
.section{padding:clamp(44px,6vw,80px) 0;}
.section--warm{background:var(--paper-warm);}
.section__head{
  display:flex;
  align-items:baseline;
  gap:clamp(14px,2vw,24px);
  flex-wrap:wrap;
  margin-bottom:clamp(24px,3vw,36px);
}
.section__num{
  font-family:var(--font-mono);
  font-size:clamp(28px,4vw,44px);
  font-weight:600;
  line-height:1;
  letter-spacing:-.05em;
  color:var(--mint-ink);
  opacity:.42;
}
.section__title{
  font-size:clamp(22px,2.6vw,30px);
  margin:0;
}

/* —— 网格 —— */
.grid{display:grid;gap:clamp(20px,3vw,32px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--sidebar{grid-template-columns:minmax(220px,282px) minmax(0,1fr);}

/* —— 卡片 —— */
.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:clamp(18px,2.4vw,26px);
  transition:border-color .28s var(--ease),transform .28s var(--ease);
}
.card:hover{border-color:var(--mint);transform:translateY(-3px);}

/* —— 正文 —— */
.prose{
  max-width:68ch;
  font-size:16.5px;
  line-height:1.9;
}
.prose h2{font-size:clamp(20px,2.2vw,26px);margin:1.8em 0 .7em;}
.prose h3{font-size:clamp(18px,1.8vw,21px);margin:1.5em 0 .6em;}
.prose strong{font-weight:700;box-shadow:inset 0 -2px 0 var(--mint);}
.prose a{color:var(--electric);}

/* —— 标签 —— */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 13px;
  border-radius:var(--radius-pill);
  background:var(--mint-soft);
  color:var(--mint-ink);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
.tag--focus{background:var(--amber-soft);color:var(--amber-ink);}
.tag--info{background:#E4EEFF;color:#1F5FCC;}

/* —— 等宽数字 —— */
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}

/* —— 按钮 —— */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 24px;
  border-radius:var(--radius-pill);
  border:1px solid var(--ink);
  background:transparent;
  color:var(--ink);
  font-size:15px;
  font-weight:600;
  text-decoration:none;
  cursor:pointer;
  transition:border-color .24s var(--ease),background-color .24s var(--ease),color .24s var(--ease);
}
.btn:hover{border-color:var(--mint-ink);color:var(--mint-ink);}
.btn--solid{
  background:var(--mint);
  border-color:var(--mint);
  color:#04241E;
}
.btn--solid:hover{background:#00B79A;border-color:#00B79A;color:#04241E;}
.btn--ghost{
  border-color:var(--line);
  background:var(--white);
  color:var(--graphite);
}
.btn--ghost:hover{border-color:var(--mint-ink);color:var(--mint-ink);}

/* —— 图片容器 —— */
.figure{margin:0;display:block;}
.figure__media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-card);
  background:var(--mint-soft);
}
.figure__media > img,
.figure__media > picture > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure--wide .figure__media{aspect-ratio:16 / 9;}
.figure--tall .figure__media{aspect-ratio:3 / 4;}
.figure--square .figure__media{aspect-ratio:1 / 1;}
.figure__caption{
  margin-top:10px;
  font-size:13px;
  line-height:1.7;
  color:var(--graphite);
}

/* —— 显现动效 —— */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.has-js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1.4fr;gap:26px;}
  .footer-col:last-child{grid-column:1 / -1;}
}

@media (max-width:960px){
  .brand-bar__motto{display:none;}
}

@media (max-width:900px){
  .grid--2,
  .grid--3,
  .grid--sidebar{grid-template-columns:minmax(0,1fr);}
}

@media (max-width:880px){
  .nav-toggle{display:inline-flex;}
  .main-nav__inner{min-height:0;padding:2px 0;}
  .nav-list{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:6px var(--gap-page) 14px;
    background:var(--paper);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 44px -34px rgba(20,24,27,.5);
    z-index:80;
  }
  [data-nav][data-open] .nav-list{display:flex;}
  .nav-list a{
    padding:13px 2px;
    border-bottom:1px solid var(--line);
  }
  .nav-list li:last-child a{border-bottom:0;}
  .nav-list a::after{
    left:2px;
    right:auto;
    width:26px;
    bottom:9px;
  }
  .badge-strip{padding:10px 0;}
}

@media (max-width:760px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-col:last-child{grid-column:auto;}
  .step-list{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:22px;}
}

@media (max-width:560px){
  .step-list{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:22px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-legal{flex-direction:column;align-items:flex-start;}
  .tool-link{padding:6px 12px;font-size:13px;}
  .brand-bar__inner{gap:12px;}
}

/* ============================================================
   可访问性：减弱动效
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none;}
  .card:hover{transform:none;}
}