/* ============================================================
   必赢亚州赛场 / Site Kit 共享样式
   深墨绿控制台 · 蓝图网格 · 荧光青数据线 · 琥珀金展签
   ============================================================ */

:root{
  --ink-night:#020806;
  --ink-base:#061A15;
  --ink-deep:#0A241D;
  --ink-panel:#10382E;
  --cyan:#42F5D1;
  --cyan-12:rgba(66,245,209,.12);
  --cyan-20:rgba(66,245,209,.20);
  --line:rgba(66,245,209,.16);
  --line-strong:rgba(66,245,209,.38);
  --mist:#9BC9BE;
  --gold:#E7B34A;
  --gold-deep:#8C6623;
  --paper:#EAF7F1;
  --red:#FF6B5E;
  --rail-w:236px;
  --bar-h:60px;
  --maxw:1360px;
  --gutter:clamp(18px,4vw,56px);
  --font-body:"PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Roboto Mono",monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}

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

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

body{
  margin:0;
  padding-left:var(--rail-w);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--paper);
  background-color:var(--ink-base);
  background-image:
    linear-gradient(rgba(66,245,209,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(66,245,209,.055) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(66,245,209,.018) 0 1px,transparent 1px 4px);
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-body);
  font-weight:200;
  line-height:1.08;
  letter-spacing:.01em;
  color:var(--paper);
}

p{margin:0 0 1em}
p:last-child{margin-bottom:0}

ul,ol{margin:0;padding:0;list-style:none}

a{color:inherit;text-decoration:none}

img,svg,video{display:block;max-width:100%}

button{font:inherit;color:inherit}

hr{border:0;margin:0}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}

#main-content{scroll-margin-top:calc(var(--bar-h) + 16px)}

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

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:200;
  padding:10px 18px;
  background:var(--cyan);
  color:#04120E;
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  transform:translateY(-160%);
  transition:transform .16s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ============================================================
   头部 / 左侧框架导航
   ============================================================ */
.site-header{
  position:fixed;
  top:0;left:0;bottom:0;
  z-index:60;
  display:flex;
  flex-direction:column;
  width:var(--rail-w);
  padding:20px 0 16px;
  background:
    linear-gradient(180deg,#08201A 0%,#05130F 62%,#04100C 100%);
  border-right:1px solid var(--line);
  overflow-y:auto;
  overflow-x:hidden;
}

.site-header::after{
  content:"";
  position:absolute;
  top:0;right:0;
  width:1px;height:100%;
  pointer-events:none;
  background:repeating-linear-gradient(180deg,var(--line-strong) 0 1px,transparent 1px 18px);
  opacity:.55;
}

.brand-row{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:10px;
  padding:0 18px 18px;
  border-bottom:1px solid var(--line);
}

.brand{
  display:flex;
  align-items:flex-start;
  gap:10px;
  color:var(--paper);
}

.brand__mark{
  position:relative;
  flex:0 0 auto;
  width:13px;height:13px;
  margin-top:5px;
  border:1px solid var(--cyan);
}
.brand__mark::after{
  content:"";
  position:absolute;
  inset:3px;
  background:var(--cyan);
}

.brand__text{
  display:flex;
  flex-direction:column;
  gap:2px;
}

.brand__cn{
  font-size:15px;
  font-weight:800;
  letter-spacing:.06em;
  line-height:1.3;
  color:var(--paper);
}

.brand__en{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cyan);
  opacity:.85;
}

.brand__tagline{
  font-size:10.5px;
  letter-spacing:.08em;
  color:rgba(155,201,190,.72);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:7px 10px;
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--cyan);
  font-size:11px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background .15s var(--ease),border-color .15s var(--ease);
}
.nav-toggle:hover{background:var(--cyan-12);border-color:var(--cyan)}

.nav-toggle__bars{
  display:block;
  position:relative;
  width:16px;height:10px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:1.5px;
  background:currentColor;
  transition:transform .18s var(--ease),top .18s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:8px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg)}

.nav-toggle__text{
  font-family:var(--font-mono);
  text-transform:uppercase;
}

/* ---------- 导航列表 ---------- */
.rail-nav{
  padding:12px 0;
  overflow-y:auto;
}

.nav-list{
  display:flex;
  flex-direction:column;
}

.nav-item{display:block}

.nav-link{
  display:grid;
  grid-template-columns:26px 1fr;
  align-items:baseline;
  gap:8px;
  padding:9px 18px 9px 15px;
  border-left:2px solid transparent;
  color:var(--mist);
  font-size:14px;
  letter-spacing:.02em;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.nav-link:hover{
  color:var(--paper);
  background:rgba(66,245,209,.06);
  border-left-color:rgba(66,245,209,.5);
}
.nav-link[aria-current="page"]{
  color:var(--cyan);
  border-left-color:var(--cyan);
  background:linear-gradient(90deg,rgba(66,245,209,.16),rgba(66,245,209,0) 78%);
}

.nav-link__idx{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:rgba(155,201,190,.5);
  transition:color .18s var(--ease);
}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--gold)}
.nav-link:hover .nav-link__idx{color:var(--cyan)}

.nav-link__label{display:block}

/* ---------- 轨道底部导出面板 ---------- */
.rail-tail{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:18px 18px 0;
  border-top:1px solid var(--line);
}

.rail-cta{
  display:block;
  padding:11px 8px;
  background:var(--gold);
  border:1px solid var(--gold);
  color:#0B1A14;
  font-size:12px;
  font-weight:800;
  letter-spacing:.1em;
  text-align:center;
  transition:background .15s var(--ease),color .15s var(--ease);
}
.rail-cta:hover{
  background:transparent;
  color:var(--gold);
}

.rail-util{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:6px;
  padding:2px 0;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist);
  border-bottom:1px solid transparent;
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.rail-util:hover{
  color:var(--cyan);
  border-bottom-color:var(--line-strong);
}

.rail-meta{
  margin:0;
  font-family:var(--font-mono);
  font-size:10px;
  line-height:1.65;
  letter-spacing:.04em;
  color:rgba(155,201,190,.52);
}

/* ============================================================
   页脚 / 导出信息面板
   ============================================================ */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,#04120E 0%,#020806 100%);
  border-top:1px solid var(--line);
}

.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:repeating-linear-gradient(90deg,var(--line-strong) 0 1px,transparent 1px 12px);
  opacity:.6;
}

.footer__grid{
  display:grid;
  grid-template-columns:1.5fr .8fr .8fr .8fr 1.35fr;
  gap:34px 28px;
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:52px var(--gutter) 40px;
}

.footer__brand{grid-column:auto}

.footer__brandline{
  margin:0 0 10px;
  font-size:15px;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--paper);
}

.footer__summary{
  margin:0 0 12px;
  max-width:32ch;
  font-size:13.5px;
  line-height:1.8;
  color:var(--mist);
}

.footer__stamp{
  margin:0;
  padding-left:10px;
  border-left:2px solid var(--gold-deep);
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1.7;
  letter-spacing:.04em;
  color:rgba(155,201,190,.6);
}

.footer__col{min-width:0}

.footer__coltitle{
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--gold);
  opacity:.9;
}

.footer__links{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.footer__link{
  display:inline-block;
  font-size:13.5px;
  color:rgba(234,247,241,.86);
  border-bottom:1px solid transparent;
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.footer__link:hover{
  color:var(--cyan);
  border-bottom-color:var(--line-strong);
}

.footer__contact{min-width:0}

.footer__contactlist{
  display:flex;
  flex-direction:column;
  gap:10px;
}

.footer__label{
  display:block;
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:rgba(155,201,190,.55);
}

.footer__value{
  display:block;
  font-size:12.5px;
  line-height:1.7;
  color:var(--paper);
  word-break:break-word;
}

.footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  max-width:var(--maxw);
  margin:0 auto;
  padding:16px var(--gutter) 26px;
  border-top:1px solid var(--line);
}

.footer__copy,
.footer__icp{
  margin:0;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.08em;
  color:rgba(155,201,190,.62);
}
.footer__icp{color:rgba(155,201,190,.48)}

.footer__legalrow{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-left:auto;
}

.footer__legal{
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--mist);
  border-bottom:1px solid transparent;
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.footer__legal:hover{
  color:var(--cyan);
  border-bottom-color:var(--line-strong);
}

/* ============================================================
   通用布局与内容组件
   ============================================================ */
.u-container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
}

.section{
  position:relative;
  padding:clamp(48px,7vw,96px) 0;
}
.section--tight{padding:clamp(30px,4vw,56px) 0}

.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:10px 24px;
  padding-bottom:12px;
  margin-bottom:clamp(20px,3vw,36px);
  border-bottom:1px solid var(--line);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:18px;height:1px;
  background:currentColor;
}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

.rule{
  height:1px;
  background:linear-gradient(90deg,var(--line-strong),rgba(66,245,209,0) 92%);
}

.panel{
  position:relative;
  background:linear-gradient(180deg,rgba(16,56,46,.55) 0%,rgba(10,36,29,.4) 100%);
  border:1px solid var(--line);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:13px;
  letter-spacing:.06em;
  cursor:pointer;
  text-align:center;
  transition:background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease);
}
.btn:hover{
  background:var(--cyan-12);
  border-color:var(--cyan);
  color:var(--paper);
}

.btn--primary{
  background:var(--cyan);
  border-color:var(--cyan);
  color:#04120E;
  font-weight:700;
}
.btn--primary:hover{
  background:#6FF8DD;
  border-color:#6FF8DD;
  color:#04120E;
}

.btn--gold{
  background:var(--gold);
  border-color:var(--gold);
  color:#0B1A14;
  font-weight:700;
}
.btn--gold:hover{
  background:#F2C567;
  border-color:#F2C567;
  color:#0B1A14;
}

.btn--ghost{
  border-color:var(--line);
  color:var(--mist);
}
.btn--ghost:hover{
  color:var(--cyan);
  border-color:var(--line-strong);
  background:transparent;
}

/* ---------- 展签式标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid rgba(155,201,190,.28);
  color:var(--mist);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.6;
  white-space:nowrap;
}
.tag--gold{
  background:var(--gold);
  border-color:var(--gold);
  color:#12200F;
  font-weight:700;
}
.tag--cyan{
  border-color:rgba(66,245,209,.5);
  color:var(--cyan);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
}
.breadcrumb a{
  color:rgba(155,201,190,.8);
  border-bottom:1px solid transparent;
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.breadcrumb a:hover{
  color:var(--cyan);
  border-bottom-color:var(--line-strong);
}
.breadcrumb__sep{color:rgba(155,201,190,.35)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

/* ---------- 图片容器基础规则 ---------- */
.media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:
    linear-gradient(135deg,rgba(16,56,46,.9),rgba(6,26,21,.95));
  border:1px solid var(--line);
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.72) contrast(1.02);
}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media--shade::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(6,26,21,0) 42%,rgba(6,26,21,.78) 100%);
}

/* ============================================================
   脚本注入件：滚动进度 / 返回顶部
   ============================================================ */
.scroll-progress{
  position:fixed;
  top:0;
  left:var(--rail-w);
  right:0;
  height:2px;
  z-index:90;
  background:rgba(66,245,209,.08);
  pointer-events:none;
}

.scroll-progress__bar{
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--gold));
  transition:width .08s linear;
}

.to-top{
  position:fixed;
  right:22px;
  bottom:26px;
  z-index:80;
  width:44px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(6,26,21,.92);
  border:1px solid var(--line-strong);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:16px;
  line-height:1;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease),background .15s var(--ease);
}
.to-top[data-visible]{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.to-top:hover{
  background:var(--cyan-12);
  border-color:var(--cyan);
}

/* ============================================================
   平板
   ============================================================ */
@media (max-width:1100px){
  .footer__grid{
    grid-template-columns:1.4fr 1fr 1fr;
    gap:30px 26px;
  }
  .footer__brand{grid-column:1 / -1}
  .footer__contact{grid-column:1 / -1}
}

/* ============================================================
   移动端：框架导航折叠为顶部窄条 + 下拉索引面板
   ============================================================ */
@media (max-width:960px){
  :root{--rail-w:0px}

  body{
    padding-left:0;
    padding-top:var(--bar-h);
  }
  body[data-nav-open]{overflow:hidden}

  #main-content{scroll-margin-top:calc(var(--bar-h) + 20px)}

  .site-header{
    top:0;right:0;bottom:auto;left:0;
    width:auto;
    height:var(--bar-h);
    flex-direction:row;
    align-items:center;
    gap:12px;
    padding:0 14px;
    border-right:0;
    border-bottom:1px solid var(--line);
    overflow:visible;
    background:linear-gradient(180deg,#08201A 0%,#05130F 100%);
  }
  .site-header::after{display:none}

  .brand-row{
    flex:1 1 auto;
    align-items:center;
    justify-content:flex-start;
    padding:0;
    border-bottom:0;
  }
  .brand{align-items:center;gap:9px}
  .brand__mark{margin-top:0}
  .brand__cn{font-size:14px}
  .brand__en{display:none}
  .brand__tagline{display:none}

  .nav-toggle{display:inline-flex;flex:0 0 auto}

  .rail-nav{
    position:fixed;
    top:var(--bar-h);
    left:0;
    right:0;
    z-index:70;
    max-height:calc(100vh - var(--bar-h));
    padding:6px 0 18px;
    overflow-y:auto;
    background:linear-gradient(180deg,#071E18 0%,#04120E 100%);
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 22px 44px rgba(2,8,6,.6);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
  }
  .site-header[data-open] .rail-nav{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }

  .rail-nav .nav-link{
    grid-template-columns:34px 1fr;
    padding:15px 18px 15px 16px;
    border-left-width:3px;
    font-size:16px;
  }
  .rail-nav .nav-link__idx{font-size:11px}

  .rail-tail{display:none}

  .scroll-progress{left:0;top:var(--bar-h)}

  .footer__grid{
    grid-template-columns:1fr 1fr;
    gap:26px 20px;
    padding:40px var(--gutter) 30px;
  }
  .footer__brand{grid-column:1 / -1}
  .footer__contact{grid-column:1 / -1}

  .to-top{right:14px;bottom:16px}
}

@media (max-width:640px){
  body{font-size:15px}
  .footer__grid{grid-template-columns:1fr}
  .footer__legalrow{margin-left:0;width:100%}
  .footer__base{padding-bottom:22px}
  .media{aspect-ratio:4/3}
  .media--wide{aspect-ratio:16/9}
}

/* ============================================================
   可访问性：减少动态效果
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}