/* ============================================================
   AK赛场 · 共享样式表 /assets/site.css
   语言：深夜墨绿底 + 荧光青绿行动 + 信号橙高亮
        锐利直角 · 1px 精密网格 · 堆叠面板 · 对角切割
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-0:#0B1410;
  --ink-1:#111C17;
  --ink-2:#182720;
  --line:#2A3B31;
  --acid:#B8FF3C;
  --mint:#74E6A1;
  --signal:#FF7A1A;
  --paper:#F2F6F3;
  --muted:#A9B7AE;
  --deep:#21543C;

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

  --wrap:1220px;
  --gutter:clamp(16px,4vw,40px);
  --gap:clamp(16px,2vw,24px);
  --ease:cubic-bezier(.2,.7,.2,1);
  --dur:200ms;
  --fast:120ms;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit}
a{color:inherit}
::selection{background:var(--acid);color:var(--ink-0)}
:target{scroll-margin-top:96px}
#main-content{scroll-margin-top:24px}
:focus-visible{outline:2px solid var(--acid);outline-offset:3px}

/* ---------- 3. 中文排版 ---------- */
h1,h2,h3,.ak-brand__mark,.ak-footer__mark{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.03em;
  line-height:1.1;
  text-wrap:balance;
}
h1{font-size:clamp(40px,6vw,80px)}
h2{font-size:clamp(26px,3.4vw,42px)}
h3{font-size:clamp(19px,2vw,24px)}
p{text-wrap:pretty}

/* ---------- 4. 布局容器与栅格 ---------- */
.ak-wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.ak-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gap);
}
.ak-col-5{grid-column:span 5}
.ak-col-6{grid-column:span 6}
.ak-col-7{grid-column:span 7}
.ak-col-12{grid-column:span 12}

/* ---------- 5. 堆叠面板 ---------- */
.ak-panel{
  position:relative;
  background:var(--ink-1);
  border:1px solid var(--line);
  padding:clamp(18px,3vw,32px);
}
.ak-panel--stack{
  background:var(--ink-2);
  margin-top:-1px;
}
.ak-panel--offset{margin-left:clamp(0px,2vw,16px)}
.ak-panel__label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--mint);
  border-left:2px solid var(--acid);
  padding-left:8px;
  margin-bottom:14px;
}

/* ---------- 6. 章节标题条 ---------- */
.ak-section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:10px 24px;
  border-bottom:1px solid var(--line);
  padding-bottom:14px;
  margin-bottom:24px;
}
.ak-section-head__title{margin:0}
.ak-section-head__meta{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
}

/* ---------- 7. 按钮 ---------- */
.ak-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  border:1px solid var(--line);
  border-radius:0;
  background:var(--ink-2);
  color:var(--paper);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  text-decoration:none;
  cursor:pointer;
  transition:background var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}
.ak-btn:hover{border-color:var(--mint);color:var(--acid)}
.ak-btn--accent{background:var(--acid);border-color:var(--acid);color:var(--ink-0);font-weight:700}
.ak-btn--accent:hover{background:var(--mint);border-color:var(--mint);color:var(--ink-0)}
.ak-btn--ghost{background:transparent}

/* ---------- 8. 状态标签 ---------- */
.ak-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  border:1px solid var(--line);
  background:var(--ink-2);
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  line-height:1.4;
}
.ak-tag--live{color:var(--acid);border-color:rgba(184,255,60,.55);background:rgba(184,255,60,.07)}
.ak-tag--alert{color:var(--signal);border-color:rgba(255,122,26,.55);background:rgba(255,122,26,.08)}
.ak-tag--mint{color:var(--mint);border-color:rgba(116,230,161,.45);background:rgba(116,230,161,.07)}

/* ---------- 9. 等宽数字 ---------- */
.ak-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

/* ---------- 10. 面包屑 ---------- */
.ak-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-top:20px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
}
.ak-breadcrumb a{color:var(--muted);text-decoration:none;transition:color var(--fast) var(--ease)}
.ak-breadcrumb a:hover{color:var(--acid)}
.ak-breadcrumb__sep{color:var(--deep)}

/* ---------- 11. 正文容器 ---------- */
.ak-prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.75;
  color:var(--paper);
}
.ak-prose p{margin-bottom:1.1em}
.ak-prose h2{margin:1.6em 0 .6em;letter-spacing:-.02em}
.ak-prose h3{margin:1.4em 0 .5em;color:var(--mint)}
.ak-prose a{color:var(--acid);text-underline-offset:3px}
.ak-prose li{position:relative;padding-left:20px;margin-bottom:.55em}
.ak-prose li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:8px;
  height:2px;
  background:var(--acid);
}
.ak-prose strong{color:var(--acid);font-weight:700}

/* ---------- 12. 图片容器基础规则 ---------- */
.ak-media{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  background:var(--ink-2);
  border:1px solid var(--line);
}
.ak-media::before{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(135deg,rgba(42,59,49,.55) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.ak-media img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
}
.ak-media--16x9{aspect-ratio:16/9}
.ak-media--4x3{aspect-ratio:4/3}
.ak-media--1x1{aspect-ratio:1/1}
.ak-media--wide{aspect-ratio:21/9}
.ak-media__caption{
  position:absolute;
  z-index:2;
  left:0;
  bottom:0;
  max-width:100%;
  padding:6px 12px;
  background:rgba(11,20,16,.86);
  border-top:1px solid var(--line);
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
}

/* ---------- 13. 跳转链接与阅读进度 ---------- */
.skip-link{
  position:fixed;
  top:-100px;
  left:16px;
  z-index:120;
  padding:10px 18px;
  background:var(--acid);
  color:var(--ink-0);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  text-decoration:none;
  transition:top var(--fast) var(--ease);
}
.skip-link:focus{top:12px}

.ak-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:2px;
  z-index:110;
  background:var(--acid);
  box-shadow:0 0 10px rgba(184,255,60,.45);
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
}

/* ---------- 14. 页头 · 状态条 ---------- */
.ak-header{
  position:relative;
  z-index:60;
  background:var(--ink-0);
  border-bottom:1px solid var(--line);
}
.ak-status{
  background:var(--ink-1);
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
}
.ak-status__inner{
  display:flex;
  align-items:center;
  gap:10px 20px;
  min-height:34px;
  padding-block:5px;
  overflow-x:auto;
  scrollbar-width:none;
}
.ak-status__inner::-webkit-scrollbar{display:none}
.ak-status__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  white-space:nowrap;
  color:var(--muted);
}
.ak-status__item--mono{color:var(--muted)}
.ak-status__round{
  color:var(--mint);
  letter-spacing:.2em;
}
.ak-status__pulse{
  width:6px;
  height:6px;
  background:var(--acid);
  box-shadow:0 0 0 3px rgba(184,255,60,.16);
  animation:ak-pulse 2.4s var(--ease) infinite;
}
.ak-status__tag{
  display:inline-flex;
  align-items:center;
  flex:0 0 auto;
  padding:2px 8px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  white-space:nowrap;
}
.ak-status__tag--pending{
  color:var(--signal);
  border-color:rgba(255,122,26,.55);
  background:rgba(255,122,26,.08);
}
.ak-status__tag--ok{
  color:var(--acid);
  border-color:rgba(184,255,60,.45);
  background:rgba(184,255,60,.07);
}
@keyframes ak-pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.45;transform:scale(.7)}
}

/* ---------- 15. 页头 · 刊头 ---------- */
.ak-masthead{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(112deg,rgba(33,84,60,.55) 0 17%,rgba(24,39,32,.4) 17% 31%,transparent 31%),
    var(--ink-0);
}
.ak-masthead__inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  padding-block:26px 22px;
}
.ak-masthead__aside{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.ak-masthead__aside--left{justify-content:flex-start}
.ak-masthead__aside--right{justify-content:flex-end;flex-wrap:wrap}
.ak-masthead__note{
  display:inline-block;
  writing-mode:vertical-rl;
  text-orientation:mixed;
  height:64px;
  padding-left:8px;
  border-left:1px solid var(--line);
  color:var(--muted);
  font-size:10px;
  font-weight:500;
  letter-spacing:.32em;
  line-height:1;
  text-align:center;
}
.ak-brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:7px;
  text-align:center;
  text-decoration:none;
  color:var(--paper);
}
.ak-brand__mark{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(30px,5vw,46px);
  line-height:1;
  letter-spacing:-.035em;
}
.ak-brand__line{
  font-size:11px;
  font-weight:500;
  letter-spacing:.34em;
  color:var(--muted);
}
.ak-chip{
  display:inline-flex;
  align-items:center;
  padding:7px 12px;
  border:1px solid var(--line);
  background:var(--ink-1);
  color:var(--paper);
  font-size:12px;
  font-weight:500;
  letter-spacing:.06em;
  text-decoration:none;
  white-space:nowrap;
  transition:border-color var(--dur) var(--ease),
             color var(--dur) var(--ease),
             background var(--dur) var(--ease);
}
.ak-chip:hover{border-color:var(--mint);color:var(--acid)}
.ak-chip--accent{
  background:var(--acid);
  border-color:var(--acid);
  color:var(--ink-0);
  font-weight:700;
}
.ak-chip--accent:hover{background:var(--mint);border-color:var(--mint);color:var(--ink-0)}

/* ---------- 16. 页头 · 栏目索引导航 ---------- */
.ak-nav{
  background:var(--ink-1);
  border-bottom:1px solid var(--line);
}
.ak-nav__inner{
  display:flex;
  align-items:center;
  justify-content:center;
}
.ak-nav__list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
}
.ak-nav__item{
  border-left:1px solid var(--line);
}
.ak-nav__item:last-child{border-right:1px solid var(--line)}
.ak-nav__link{
  position:relative;
  display:block;
  padding:15px 22px;
  color:var(--muted);
  font-size:14px;
  font-weight:500;
  letter-spacing:.04em;
  text-decoration:none;
  white-space:nowrap;
  transition:color var(--dur) var(--ease);
}
.ak-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:var(--acid);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.ak-nav__link:hover{color:var(--paper)}
.ak-nav__link:hover::after{transform:scaleX(1)}
.ak-nav__link[aria-current="page"]{color:var(--acid)}
.ak-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.ak-nav__toggle{display:none}
.ak-nav__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.ak-nav__bars span{
  display:block;
  height:2px;
  background:var(--acid);
  transition:transform var(--dur) var(--ease);
}
.ak-nav__toggle-text{
  font-size:13px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--paper);
}

/* ---------- 17. 页脚 ---------- */
.ak-footer{
  position:relative;
  overflow:hidden;
  background:var(--ink-1);
  border-top:1px solid var(--line);
}
.ak-footer__watermark{
  position:absolute;
  right:-.06em;
  bottom:-.3em;
  z-index:0;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(150px,28vw,320px);
  line-height:.8;
  color:transparent;
  -webkit-text-stroke:1px var(--line);
  pointer-events:none;
  user-select:none;
}
.ak-footer__inner{position:relative;z-index:1}
.ak-footer__top{
  display:grid;
  grid-template-columns:minmax(240px,1.35fr) 2.2fr;
  gap:clamp(28px,5vw,64px);
  padding-block:clamp(36px,6vw,64px) 34px;
}
.ak-footer__brand{min-width:0}
.ak-footer__mark{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(26px,3.4vw,34px);
  letter-spacing:-.035em;
  color:var(--paper);
}
.ak-footer__line{
  margin:8px 0 20px;
  color:var(--muted);
  font-size:13px;
  letter-spacing:.18em;
}
.ak-footer__contact{
  display:flex;
  flex-direction:column;
  gap:6px;
  font-size:13px;
  color:var(--muted);
}
.ak-footer__mail{
  color:var(--acid);
  font-family:var(--font-mono);
  font-size:13px;
  word-break:break-all;
}
.ak-footer__mono{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--paper);
}
.ak-footer__addr{font-size:13px}
.ak-footer__note{
  margin-top:6px;
  padding-top:8px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--muted);
}
.ak-footer__cols{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  min-width:0;
}
.ak-footer__col ul{display:flex;flex-direction:column;gap:9px}
.ak-footer__head{
  margin:0 0 14px;
  color:var(--mint);
  font-family:var(--font-body);
  font-size:11px;
  font-weight:500;
  letter-spacing:.22em;
  line-height:1.4;
}
.ak-footer__link{
  color:var(--muted);
  font-size:14px;
  text-decoration:none;
  transition:color var(--fast) var(--ease);
}
.ak-footer__link:hover{color:var(--acid)}
.ak-footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 22px;
  padding-block:18px 26px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
}
.ak-footer__copy{white-space:nowrap}
.ak-footer__legal-link{
  color:var(--muted);
  text-decoration:none;
  transition:color var(--fast) var(--ease);
}
.ak-footer__legal-link:hover{color:var(--acid)}
.ak-footer__icp{
  margin-left:auto;
  color:var(--deep);
  white-space:nowrap;
}

/* ---------- 18. 平板 ---------- */
@media (max-width:1024px){
  .ak-masthead__note{display:none}
  .ak-footer__top{grid-template-columns:1fr;gap:32px}
}

/* ---------- 19. 手机 ---------- */
@media (max-width:860px){
  .ak-col-5,.ak-col-6,.ak-col-7{grid-column:span 12}
  .ak-masthead__inner{
    grid-template-columns:1fr;
    gap:16px;
    padding-block:20px 18px;
  }
  .ak-masthead__aside--left{display:none}
  .ak-masthead__aside--right{justify-content:center}
  .ak-brand__line{letter-spacing:.22em}

  .ak-nav__inner{
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
  }
  .ak-nav__toggle{
    display:flex;
    align-items:center;
    gap:12px;
    width:100%;
    padding:15px 0;
    background:transparent;
    border:0;
    cursor:pointer;
    text-align:left;
  }
  .ak-nav__list{display:none;flex-direction:column;flex-wrap:nowrap;border-top:1px solid var(--line)}
  .ak-nav[data-open="true"] .ak-nav__list{display:flex;animation:ak-nav-in 160ms var(--ease) both}
  .ak-nav__item{border-left:0;border-right:0;border-bottom:1px solid var(--line)}
  .ak-nav__item:last-child{border-right:0;border-bottom:0}
  .ak-nav__link{padding:14px 6px;font-size:15px}
  .ak-nav__link::after{display:none}
  .ak-nav__link[aria-current="page"]{
    padding-left:14px;
    box-shadow:inset 2px 0 0 var(--acid);
  }
  .ak-nav[data-open="true"] .ak-nav__bars span:first-child{transform:translateY(3px) rotate(45deg)}
  .ak-nav[data-open="true"] .ak-nav__bars span:last-child{transform:translateY(-3px) rotate(-45deg)}

  @keyframes ak-nav-in{
    from{opacity:0;transform:translateY(-4px)}
    to{opacity:1;transform:translateY(0)}
  }

  .ak-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 20px}
  .ak-footer__icp{margin-left:0}
}

@media (max-width:520px){
  .ak-status__inner{font-size:10px;gap:10px 14px}
  .ak-footer__cols{grid-template-columns:1fr}
  .ak-btn{width:100%}
}

/* ---------- 20. 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .ak-status__pulse{animation:none;opacity:1;transform:none}
  .ak-progress{transition:none}
}