/* =========================================================
   IM电竞 · 共享外壳样式 / assets/site.css
   深空蓝基底 + 霓虹青 / 电光紫 / 熔岩橙 三色信号体系
   ========================================================= */

:root{
  --ink:#070B1A;
  --panel:#101A33;
  --panel-2:#0B1428;
  --cyan:#28F0D2;
  --violet:#8B5CFF;
  --lava:#FF6B35;
  --silver:#E8F0FF;
  --mist:#7C8DB5;
  --glitch:#FF3D6E;
  --line:rgba(124,141,181,.26);
  --line-strong:rgba(124,141,181,.46);
  --holo:linear-gradient(120deg,#0B3A5B 0%,#28F0D2 100%);
  --rail:1340px;
  --ease:cubic-bezier(.22,.68,0,1);
  --font-display:"Oswald","Arial Narrow","Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

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

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

body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--silver);
  background-color:var(--ink);
  background-image:
    radial-gradient(1020px 560px at 8% -10%, rgba(40,240,210,.10), transparent 60%),
    radial-gradient(840px 520px at 97% 3%, rgba(139,92,255,.13), transparent 62%),
    linear-gradient(rgba(124,141,181,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,141,181,.05) 1px, transparent 1px);
  background-size:auto, auto, 64px 64px, 64px 64px;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:.98;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--silver);
  margin:0 0 .62em;
}
h1{font-size:clamp(34px,5.4vw,72px)}
h2{font-size:clamp(26px,3.6vw,46px)}
h3{font-size:clamp(19px,2.2vw,26px);letter-spacing:.05em}
h4{font-size:17px;letter-spacing:.08em}

p{margin:0 0 1.1em}
img,svg,video{max-width:100%}
ul,ol{margin:0 0 1.1em}
a{color:var(--cyan);text-decoration:none}
a:hover{color:#7CFFE8}
button{font:inherit}
hr{border:0;height:1px;background:var(--line);margin:2.4em 0}

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

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

#main-content{display:block;scroll-margin-top:110px}

/* ---------- 容器 ---------- */
.shell{
  width:min(calc(100% - 36px), var(--rail));
  margin-inline:auto;
}
.shell--narrow{--rail:900px}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;left:14px;top:-120px;z-index:200;
  padding:10px 18px;
  background:var(--cyan);color:#04121A;
  font-size:14px;font-weight:700;letter-spacing:.08em;
  text-decoration:none;
  clip-path:polygon(10px 0,100% 0,100% 100%,0 100%,0 10px);
  transition:top .22s var(--ease);
}
.skip-link:focus{top:14px;color:#04121A}

/* =========================================================
   页头数据坞
   ========================================================= */
.site-dock{
  position:sticky;top:0;z-index:80;
  background:rgba(8,13,28,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:0 22px 46px -30px rgba(0,0,0,.95);
}
.site-dock::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--holo);
}
.site-dock::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(40,240,210,.75) 14%,rgba(139,92,255,.6) 66%,transparent);
  pointer-events:none;
}

.site-dock__progress{
  position:absolute;left:0;top:0;height:2px;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 60%,var(--lava));
  pointer-events:none;z-index:3;
}

.site-dock__beam{
  position:relative;
  display:flex;align-items:center;gap:18px;
  width:min(calc(100% - 32px), var(--rail));
  margin-inline:auto;
  min-height:58px;
}

.site-dock__brand{
  display:flex;align-items:center;gap:12px;
  min-width:0;
  color:var(--silver);
  text-decoration:none;
}
.site-dock__brand:hover{color:var(--silver)}

.site-dock__mark{
  display:flex;align-items:flex-end;gap:3px;height:22px;flex:0 0 auto;
}
.site-dock__mark i{
  display:block;width:4px;height:100%;
  background:var(--cyan);
  transform:skewX(-14deg);
}
.site-dock__mark i:nth-child(2){height:62%;background:var(--violet)}
.site-dock__mark i:nth-child(3){height:80%;background:var(--lava)}

.site-dock__name{
  font-family:var(--font-display);
  font-weight:900;font-size:20px;letter-spacing:.16em;
  text-transform:uppercase;white-space:nowrap;
}
.site-dock__line{
  padding-left:12px;
  border-left:1px solid var(--line-strong);
  font-size:12px;letter-spacing:.1em;color:var(--mist);
  white-space:nowrap;
}

.site-dock__status{
  display:inline-flex;align-items:center;gap:8px;
  margin:0 0 0 auto;
  padding:5px 12px;
  border:1px solid var(--line-strong);
  background:rgba(16,26,51,.7);
  font-size:12px;letter-spacing:.08em;color:var(--mist);
  white-space:nowrap;
}
.pulse{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);
  animation:pulse 2.6s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(40,240,210,.5)}
  70%{box-shadow:0 0 0 9px rgba(40,240,210,0)}
  100%{box-shadow:0 0 0 0 rgba(40,240,210,0)}
}

.site-dock__toggle{
  display:none;align-items:center;gap:10px;
  margin-left:auto;
  padding:9px 14px;
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--silver);
  font-size:13px;font-weight:700;letter-spacing:.1em;
  cursor:pointer;
}
.site-dock__toggle-bars{display:grid;gap:4px;width:18px}
.site-dock__toggle-bars i{
  display:block;height:2px;background:var(--cyan);
  transition:transform .25s var(--ease);
}
.site-dock[data-open] .site-dock__toggle-bars i:first-child{transform:translateY(3px) rotate(45deg)}
.site-dock[data-open] .site-dock__toggle-bars i:last-child{transform:translateY(-3px) rotate(-45deg)}
.site-dock__toggle-text{white-space:nowrap}

.site-dock__nav{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:min(calc(100% - 32px), var(--rail));
  margin-inline:auto;
  padding:0 0 12px;
}
.site-dock__list{
  display:flex;align-items:center;gap:2px;
  list-style:none;margin:0;padding:0;
}
.site-dock__item{position:relative}
.site-dock__item + .site-dock__item::before{
  content:"";position:absolute;left:0;top:50%;
  width:1px;height:14px;margin-top:-7px;
  background:var(--line);
}

.nav-link{
  position:relative;display:block;
  padding:9px 14px 11px;
  font-size:14px;font-weight:700;letter-spacing:.06em;
  color:var(--mist);
  white-space:nowrap;
  transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--holo);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .28s var(--ease);
}
.nav-link:hover{color:var(--silver)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.site-dock__cta{flex:0 0 auto}

.site-dock__rail{
  display:block;height:4px;
  background-image:repeating-linear-gradient(90deg, rgba(124,141,181,.42) 0 1px, transparent 1px 20px);
  opacity:.45;
}

/* =========================================================
   按钮
   ========================================================= */
.btn{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;
  font-family:var(--font-body);
  font-size:14px;font-weight:700;letter-spacing:.08em;
  color:#04121A;
  background:var(--cyan);
  border:0;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  transition:transform .2s var(--ease),background .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn:hover{
  background:#7CFFE8;color:#04121A;
  transform:translateY(-2px);
}
.btn:active{transform:translateY(0)}
.btn:focus-visible{
  outline:none;
  filter:drop-shadow(0 0 1px var(--cyan)) drop-shadow(0 0 9px rgba(40,240,210,.9));
}

.btn--ghost{background:transparent;color:var(--silver);box-shadow:inset 0 0 0 1px var(--line-strong)}
.btn--ghost:hover{background:rgba(40,240,210,.08);color:var(--cyan);box-shadow:inset 0 0 0 1px var(--cyan)}

.btn--signal{background:var(--lava);color:#180500}
.btn--signal:hover{background:#FF8B5E;color:#180500}

.btn--violet{background:var(--violet);color:#F5F1FF}
.btn--violet:hover{background:#A87CFF;color:#F5F1FF}

/* =========================================================
   页脚
   ========================================================= */
.site-foot{
  position:relative;
  margin-top:clamp(72px,9vw,132px);
  background:linear-gradient(180deg,#0A1122,#05080F);
}
.site-foot__band{
  height:7px;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 46%,var(--lava) 76%,var(--glitch));
}
.site-foot__inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,.85fr) minmax(0,1.25fr);
  gap:clamp(26px,3.4vw,54px);
  width:min(calc(100% - 36px), var(--rail));
  margin-inline:auto;
  padding:clamp(38px,5vw,66px) 0 clamp(28px,3vw,44px);
}
.site-foot__word{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(30px,4.6vw,52px);
  line-height:1;letter-spacing:.12em;text-transform:uppercase;
  margin:0;color:var(--silver);
}
.site-foot__word::after{
  content:"";display:block;width:56px;height:3px;margin-top:16px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
}
.site-foot__tag{
  margin:14px 0 0;
  font-size:13px;letter-spacing:.12em;color:var(--mist);
}
.site-foot__nav{min-width:0}
.site-foot__label{
  margin:0 0 14px;
  font-size:12px;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;color:var(--violet);
}
.site-foot__links{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.site-foot__links a{
  display:inline-block;
  padding-bottom:2px;
  font-size:15px;color:var(--silver);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.site-foot__links a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.site-foot__contact{min-width:0}
.site-foot__summary{
  margin:0 0 12px;
  font-size:14px;line-height:1.85;color:var(--silver);
}
.site-foot__note{
  margin:0;
  font-size:12.5px;line-height:1.7;color:var(--mist);
}
.site-foot__base{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 26px;
  width:min(calc(100% - 36px), var(--rail));
  margin-inline:auto;
  padding:20px 0 36px;
  border-top:1px solid var(--line);
  font-size:12.5px;letter-spacing:.06em;color:var(--mist);
}
.site-foot__base p{margin:0}
.site-foot__copy{color:var(--mist)}
.site-foot__icp{font-family:var(--font-mono);color:var(--mist)}
.site-foot__year{margin-left:auto;color:var(--mist)}
.site-foot__year [data-year]{font-family:var(--font-mono);color:var(--cyan)}

/* =========================================================
   通用组件
   ========================================================= */
.panel{
  position:relative;
  padding:clamp(20px,2.6vw,34px);
  background:linear-gradient(160deg,rgba(16,26,51,.95),rgba(11,20,40,.9));
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - 20px) 0,100% 20px,100% 100%,20px 100%,0 calc(100% - 20px));
}
.panel--flat{clip-path:none;border-radius:2px}
.panel--tint-cyan{border-color:rgba(40,240,210,.42)}
.panel--tint-violet{border-color:rgba(139,92,255,.44)}
.panel--tint-lava{border-color:rgba(255,107,53,.46)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  margin:0 0 14px;
  font-size:12px;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--holo)}

.band{
  height:6px;width:100%;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 50%,var(--lava));
  opacity:.9;
}
.band--thin{height:3px}

.crumbs{
  width:min(calc(100% - 36px), var(--rail));
  margin:28px auto 0;
  font-size:13px;letter-spacing:.06em;color:var(--mist);
}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:var(--line-strong)}
.crumbs a{color:var(--mist)}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--silver)}

.grid{display:grid;gap:clamp(18px,2.4vw,30px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.grid--split{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-size:11.5px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;
  border:1px solid var(--line-strong);
  color:var(--mist);
}
.tag--cyan{color:var(--cyan);border-color:rgba(40,240,210,.5)}
.tag--violet{color:#B79BFF;border-color:rgba(139,92,255,.5)}
.tag--lava{color:#FF9166;border-color:rgba(255,107,53,.55)}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.data-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
  text-shadow:0 0 1px rgba(40,240,210,.9),0 0 14px rgba(40,240,210,.35);
}

/* 图片容器基础规则（页面阶段放入 img / 内联 svg） */
.fig{
  position:relative;
  margin:0;
  background:var(--panel-2);
  border:1px solid var(--line);
  overflow:hidden;
}
.fig__media{
  position:relative;
  aspect-ratio:var(--fig-ratio,16 / 9);
  background:linear-gradient(135deg,#0B3A5B,#101A33 52%,#070B1A);
  overflow:hidden;
}
.fig__media > img,
.fig__media > svg,
.fig__media > video{
  display:block;width:100%;height:100%;object-fit:cover;
}
.fig__media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg, rgba(40,240,210,.10) 0 1px, transparent 1px 8px);
}
.fig__cap{
  padding:10px 14px;
  font-size:13px;letter-spacing:.04em;color:var(--mist);
  border-top:1px solid var(--line);
}
.fig--wide{--fig-ratio:21 / 9}
.fig--tall{--fig-ratio:4 / 5}
.fig--square{--fig-ratio:1 / 1}

.prose{max-width:72ch}
.prose h2{margin-top:1.7em;font-size:clamp(22px,2.6vw,32px)}
.prose h3{margin-top:1.5em}
.prose ul,.prose ol{padding-left:1.25em}
.prose li{margin:.35em 0}
.prose strong{color:var(--cyan)}

/* =========================================================
   滚动显现（无 JS 时内容默认可见）
   ========================================================= */
.reveal-ready [data-reveal]{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .62s var(--ease),transform .62s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
.reveal-ready [data-reveal].is-in{opacity:1;transform:none}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:960px){
  .site-dock__toggle{display:inline-flex}

  .site-dock__nav{
    position:absolute;left:0;right:0;top:100%;
    display:grid;gap:0;
    width:100%;margin:0;
    padding:10px 18px 22px;
    background:linear-gradient(180deg,#0C1428,#070B1A 88%);
    border-bottom:1px solid rgba(40,240,210,.35);
    box-shadow:0 34px 60px -32px #000;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    max-height:calc(100vh - 70px);
    overflow-y:auto;
    transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s linear;
  }
  .site-dock[data-open] .site-dock__nav{
    opacity:1;visibility:visible;transform:none;
  }

  .site-dock__list{display:grid;gap:0;width:100%}
  .site-dock__item + .site-dock__item::before{display:none}

  .nav-link{
    padding:14px 14px;
    font-size:15px;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{
    color:var(--cyan);
    box-shadow:inset 3px 0 0 var(--cyan);
  }

  .site-dock__cta{margin-top:18px;width:100%}
  .site-dock__rail{display:none}

  .grid--split{grid-template-columns:1fr}

  .site-foot__inner{grid-template-columns:1fr}
  .site-foot__year{margin-left:0}
}

@media (max-width:720px){
  .site-dock__line{display:none}
}

@media (max-width:640px){
  .site-dock__status{display:none}
  .site-dock__name{font-size:17px;letter-spacing:.12em}
  .site-dock__beam{min-height:54px;gap:12px}
  .shell{width:min(calc(100% - 26px), var(--rail))}
  .crumbs{width:min(calc(100% - 26px), var(--rail))}
  .site-foot__inner,
  .site-foot__base{width:min(calc(100% - 26px), var(--rail))}
  .btn{width:100%}
  .site-dock__cta{width:100%}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal-ready [data-reveal]{opacity:1 !important;transform:none !important}
}