/* ============================================================
   MANBETX看台 · 共享站点样式  /assets/site.css
   夜间看台 × 数据机房：深墨绿底 / 荧光黄绿锚点 / 暖橙折扣
   ============================================================ */

/* ---------- 1. RESET ---------- */
*,*::before,*::after{box-sizing:border-box}
html{margin:0;padding:0;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0;height:1px;background:var(--xt-line);margin:0}
[hidden]{display:none !important}

/* ---------- 2. 变量 ---------- */
:root{
  --xt-ink:#0B1A14;
  --xt-charcoal:#101311;
  --xt-panel:#16241C;
  --xt-lime:#C7FF3C;
  --xt-lime-dim:rgba(199,255,60,.14);
  --xt-lime-soft:rgba(199,255,60,.07);
  --xt-orange:#FF8A2B;
  --xt-orange-soft:rgba(255,138,43,.16);
  --xt-silver:#C0C6C2;
  --xt-white:#F2F5F0;
  --xt-muted:#6E7B72;
  --xt-green:#3DBE8B;
  --xt-violet:#7A7FE0;
  --xt-line:rgba(192,198,194,.20);
  --xt-line-strong:rgba(192,198,194,.42);
  --xt-max:1240px;
  --xt-gutter:clamp(18px,4vw,44px);
  --xt-rhythm:clamp(52px,8vw,104px);
  --xt-ease:cubic-bezier(.2,.7,.3,1);
  --xt-head:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --xt-mono:ui-monospace,"SFMono-Regular","Cascadia Mono","Roboto Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

/* ---------- 3. 基底排版 ---------- */
body{
  font-family:var(--xt-head);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--xt-white);
  background-color:var(--xt-ink);
  background-image:
    radial-gradient(1100px 640px at 8% -10%, rgba(22,36,28,.9), rgba(11,26,20,0) 62%),
    radial-gradient(880px 540px at 98% 4%, rgba(61,190,139,.07), rgba(11,26,20,0) 58%),
    linear-gradient(rgba(192,198,194,.035) 1px, rgba(0,0,0,0) 1px),
    linear-gradient(90deg, rgba(192,198,194,.035) 1px, rgba(0,0,0,0) 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{font-weight:900;letter-spacing:-.02em;line-height:1.18}
p{color:inherit}
strong,b{font-weight:700;color:var(--xt-white)}
::selection{background:var(--xt-lime);color:#08210F}

/* ---------- 4. 焦点与可访问性 ---------- */
:focus{outline:none}
:focus-visible{outline:2px solid var(--xt-lime);outline-offset:3px;border-radius:2px}
.xt-skip{
  position:absolute;left:12px;top:-80px;z-index:90;
  display:inline-block;
  padding:12px 20px;
  background:var(--xt-lime);
  color:#08210F;
  font-family:var(--xt-mono);font-size:13px;font-weight:700;letter-spacing:.06em;
  clip-path:polygon(0 0,100% 0,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:top .18s var(--xt-ease);
}
.xt-skip:focus,.xt-skip:focus-visible{top:12px}

/* ---------- 5. 容器与章节 ---------- */
.xt-container{width:100%;max-width:var(--xt-max);margin-inline:auto;padding-inline:var(--xt-gutter)}
.xt-section{padding-block:clamp(46px,7vw,94px)}
.xt-section--tight{padding-block:clamp(24px,4vw,50px)}
.xt-section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 36px;
  margin-bottom:clamp(22px,3.2vw,42px);
}
.xt-section__title{font-size:clamp(23px,3.2vw,38px);font-weight:900;letter-spacing:-.02em;color:var(--xt-white)}
.xt-section__note{max-width:34em;font-size:15px;line-height:1.8;color:var(--xt-silver)}
.xt-prose{max-width:38em}
.xt-prose p{font-size:16.5px;line-height:1.85;color:var(--xt-silver)}
.xt-prose p + p{margin-top:1.05em}
.xt-prose p strong{color:var(--xt-white)}

/* ---------- 6. 网格 ---------- */
.xt-grid{display:grid;gap:clamp(16px,2.4vw,30px);align-items:start}
.xt-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.xt-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 7. 索引 / 数字 / 分隔 ---------- */
.xt-index{
  display:inline-block;
  font-family:var(--xt-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--xt-muted);
}
.xt-num{
  display:block;
  font-family:var(--xt-mono);
  font-weight:700;
  font-size:clamp(40px,9vw,104px);
  letter-spacing:-.03em;
  line-height:.92;
  color:var(--xt-lime);
  font-variant-numeric:tabular-nums;
}
.xt-num--warm{color:var(--xt-orange);font-size:clamp(30px,5vw,60px)}
.xt-rule{
  height:1px;border:0;
  background:var(--xt-line);
  transform:rotate(-1.2deg);
  transform-origin:left center;
  margin-block:clamp(30px,5vw,64px);
}
.xt-guide{
  height:1px;
  background:linear-gradient(90deg,var(--xt-lime),rgba(199,255,60,0) 74%);
  transform:rotate(-1.5deg);
  transform-origin:left center;
  margin-block:clamp(28px,4.4vw,56px);
}
.xt-ticks{
  height:10px;
  background:repeating-linear-gradient(90deg,var(--xt-line-strong) 0 1px,rgba(0,0,0,0) 1px 14px);
}

/* ---------- 8. 按钮 ---------- */
.xt-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 26px;
  border:0;
  font-family:var(--xt-mono);
  font-size:12.5px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;
  clip-path:polygon(0 0,calc(100% - 13px) 0,100% 13px,100% 100%,13px 100%,0 calc(100% - 13px));
  transition:color .2s var(--xt-ease),background .2s var(--xt-ease),box-shadow .2s var(--xt-ease);
}
.xt-btn--solid{background:var(--xt-lime);color:#08210F}
.xt-btn--solid:hover{background:#DAFF77;color:#08210F}
.xt-btn--outline{background:rgba(22,36,28,.92);color:var(--xt-white);box-shadow:inset 0 0 0 1px var(--xt-line-strong)}
.xt-btn--outline:hover{color:var(--xt-lime);box-shadow:inset 0 0 0 1px var(--xt-lime)}
.xt-btn--warm{background:var(--xt-orange);color:#1A0C00}
.xt-btn--warm:hover{background:#FFA55C;color:#1A0C00}

/* ---------- 9. 标签与筛选栏 ---------- */
.xt-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 13px;
  background:rgba(22,36,28,.78);
  border:1px solid var(--xt-line);
  color:var(--xt-silver);
  font-family:var(--xt-mono);font-size:12px;letter-spacing:.08em;
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,0 100%);
  transition:color .18s var(--xt-ease),border-color .18s var(--xt-ease),background .18s var(--xt-ease);
}
.xt-tag:hover{color:var(--xt-white);border-color:var(--xt-line-strong)}
.xt-tag[aria-pressed="true"]{color:var(--xt-lime);border-color:var(--xt-lime);background:var(--xt-lime-dim);font-weight:700}
.xt-filterbar{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  padding-block:clamp(10px,1.8vw,18px);
}
.xt-filterbar__count{
  margin-left:auto;
  font-family:var(--xt-mono);font-size:12px;letter-spacing:.12em;
  color:var(--xt-muted);
}
.xt-filterbar__count b{color:var(--xt-lime);font-weight:700}
[data-filter-item]{transition:opacity .2s var(--xt-ease)}

/* ---------- 10. 切角面板 / 图片容器 ---------- */
.xt-panel{
  position:relative;
  padding:clamp(20px,2.6vw,32px);
  background:var(--xt-panel);
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px));
  transition:background .2s var(--xt-ease);
}
.xt-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  border:1px solid var(--xt-line);
  clip-path:inherit;
  transition:border-color .2s var(--xt-ease);
}
.xt-panel:hover::before{border-color:var(--xt-lime)}
.xt-figure{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--xt-panel);
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px));
}
.xt-figure--wide{aspect-ratio:21/9}
.xt-figure--tall{aspect-ratio:3/4}
.xt-figure--square{aspect-ratio:1/1}
.xt-figure > img,
.xt-figure__img{width:100%;height:100%;object-fit:cover}
.xt-figure::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(11,26,20,.12),rgba(11,26,20,.62)),
    repeating-linear-gradient(0deg,rgba(192,198,194,.07) 0 1px,rgba(0,0,0,0) 1px 40px),
    repeating-linear-gradient(90deg,rgba(192,198,194,.07) 0 1px,rgba(0,0,0,0) 1px 40px);
}

/* ---------- 11. 面包屑 ---------- */
.xt-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:clamp(18px,3vw,30px);
  font-family:var(--xt-mono);font-size:12px;letter-spacing:.08em;
  color:var(--xt-muted);
}
.xt-breadcrumb a{color:var(--xt-silver);transition:color .2s var(--xt-ease)}
.xt-breadcrumb a:hover{color:var(--xt-lime)}
.xt-breadcrumb__sep{color:var(--xt-muted);opacity:.7}
.xt-breadcrumb [aria-current="page"]{color:var(--xt-lime)}

/* ============================================================
   12. 头部
   ============================================================ */
.xt-header{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(180deg,rgba(11,26,20,.985),rgba(11,26,20,.94));
  border-bottom:1px solid var(--xt-line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

/* 12.1 刻度带 */
.xt-scalebar{position:relative;background:var(--xt-charcoal);border-bottom:1px solid var(--xt-line)}
.xt-scalebar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  width:100%;max-width:var(--xt-max);margin-inline:auto;
  height:34px;padding-inline:var(--xt-gutter);
  font-family:var(--xt-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--xt-muted);
}
.xt-scalebar__link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--xt-silver);
  transition:color .2s var(--xt-ease);
}
.xt-scalebar__link::before{content:"";width:14px;height:2px;background:var(--xt-lime);flex:0 0 auto}
.xt-scalebar__link:hover{color:var(--xt-lime)}
.xt-scalebar__meta{color:var(--xt-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.xt-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(199,255,60,.10)}
.xt-progress__bar{display:block;height:100%;width:0;background:var(--xt-lime);transition:width .1s linear}

/* 12.2 刊头 */
.xt-masthead{padding:clamp(16px,2.8vw,28px) var(--xt-gutter) clamp(12px,1.8vw,18px)}
.xt-masthead__inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:clamp(12px,3vw,36px);
  width:100%;max-width:var(--xt-max);margin-inline:auto;
}
.xt-masthead__aside{
  display:flex;flex-direction:column;gap:4px;min-width:0;
  padding-top:8px;border-top:1px solid var(--xt-line);
  font-family:var(--xt-mono);font-size:12px;line-height:1.6;letter-spacing:.06em;
}
.xt-masthead__aside--l{align-items:flex-start;text-align:left}
.xt-masthead__aside--r{align-items:flex-end;text-align:right}
.xt-masthead__state{color:var(--xt-silver);font-size:12.5px}
.xt-masthead__cta{
  font-family:var(--xt-mono);font-size:13px;letter-spacing:.06em;
  color:var(--xt-orange);
  border-bottom:1px solid rgba(255,138,43,.45);
  transition:color .2s var(--xt-ease),border-color .2s var(--xt-ease);
}
.xt-masthead__cta:hover{color:#FFB070;border-bottom-color:#FFB070}

/* 12.3 品牌 */
.xt-brand{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}
.xt-brand__cn{
  font-family:var(--xt-head);
  font-size:clamp(21px,3.5vw,36px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1;
  color:var(--xt-white);
  transition:color .2s var(--xt-ease);
}
.xt-brand__en{
  font-family:var(--xt-mono);
  font-size:clamp(9px,1vw,11px);
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--xt-muted);
}
.xt-brand:hover .xt-brand__cn{color:var(--xt-lime)}

/* 12.4 栏目条 */
.xt-nav{
  width:100%;max-width:var(--xt-max);margin-inline:auto;
  padding:0 var(--xt-gutter) clamp(8px,1.4vw,14px);
}
.xt-nav__list{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;
  padding-top:clamp(10px,1.5vw,16px);
  border-top:1px solid var(--xt-line);
}
.xt-nav__item{display:flex;align-items:center}
.xt-nav__item + .xt-nav__item::before{
  content:"/";
  margin-inline:clamp(9px,1.5vw,20px);
  font-family:var(--xt-mono);
  color:var(--xt-muted);
  opacity:.6;
}
.xt-nav__link{
  position:relative;
  display:inline-block;
  padding:6px 2px;
  font-size:14px;letter-spacing:.06em;
  color:var(--xt-silver);
  transition:color .2s var(--xt-ease);
}
.xt-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--xt-silver);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--xt-ease),background .22s var(--xt-ease);
}
.xt-nav__link:hover{color:var(--xt-white)}
.xt-nav__link:hover::after{background:var(--xt-lime);transform:scaleX(1)}
.xt-nav__link[aria-current="page"]{color:var(--xt-lime);font-weight:700}
.xt-nav__link[aria-current="page"]::after{background:var(--xt-lime);transform:scaleX(1)}

/* 12.5 移动导航按钮 */
.xt-nav-toggle{
  display:none;align-items:center;gap:10px;
  width:100%;
  padding:12px 0;
  border-top:1px solid var(--xt-line);
  font-family:var(--xt-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--xt-silver);
  transition:color .2s var(--xt-ease);
}
.xt-nav-toggle:hover{color:var(--xt-lime)}
.xt-nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:18px;flex:0 0 auto}
.xt-nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .2s var(--xt-ease),opacity .2s var(--xt-ease)}
.xt-nav-toggle[aria-expanded="true"]{color:var(--xt-lime)}
.xt-nav-toggle[aria-expanded="true"] .xt-nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.xt-nav-toggle[aria-expanded="true"] .xt-nav-toggle__bars i:nth-child(2){opacity:0}
.xt-nav-toggle[aria-expanded="true"] .xt-nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============================================================
   13. 页脚
   ============================================================ */
.xt-footer{
  margin-top:var(--xt-rhythm);
  background:var(--xt-charcoal);
  border-top:1px solid var(--xt-line);
}
.xt-footer__inner{
  width:100%;max-width:var(--xt-max);margin-inline:auto;
  padding:clamp(38px,6vw,70px) var(--xt-gutter) clamp(26px,4vw,42px);
}
.xt-footer__grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,4vw,48px);
  padding-bottom:clamp(26px,4vw,46px);
  border-bottom:1px solid var(--xt-line);
}
.xt-footer__col{min-width:0}
.xt-footer__title{
  display:flex;align-items:center;gap:9px;
  margin-bottom:15px;
  font-family:var(--xt-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--xt-lime);
}
.xt-footer__title::before{content:"";width:14px;height:1px;background:var(--xt-orange);flex:0 0 auto}
.xt-footer__list li + li{margin-top:9px}
.xt-footer__list a{
  display:inline-block;
  font-size:14.5px;line-height:1.7;
  color:var(--xt-silver);
  border-bottom:1px solid rgba(0,0,0,0);
  transition:color .2s var(--xt-ease),border-color .2s var(--xt-ease);
}
.xt-footer__list a:hover{color:var(--xt-lime);border-bottom-color:var(--xt-lime)}

.xt-footer__meta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px 32px;
  padding:clamp(20px,3vw,32px) 0;
  border-bottom:1px dashed var(--xt-line);
}
.xt-brand--footer{align-items:flex-start;text-align:left;gap:5px}
.xt-brand--footer .xt-brand__cn{font-size:clamp(18px,2.2vw,24px)}
.xt-brand--footer .xt-brand__en{letter-spacing:.24em}
.xt-footer__version{
  display:flex;align-items:center;gap:10px;
  font-family:var(--xt-mono);font-size:12px;letter-spacing:.1em;
  color:var(--xt-muted);
}
.xt-footer__version strong{color:var(--xt-white);font-size:13px;letter-spacing:.06em}

.xt-footer__contact{
  display:grid;grid-template-columns:auto minmax(0,1fr);
  gap:8px clamp(14px,2vw,28px);
  padding:clamp(20px,3vw,32px) 0;
  border-bottom:1px solid var(--xt-line);
}
.xt-footer__contact dt{padding-top:4px}
.xt-footer__contact dd{
  font-size:14px;line-height:1.75;color:var(--xt-white);
  font-family:var(--xt-mono);letter-spacing:.02em;
  overflow-wrap:anywhere;
}

.xt-footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 26px;
  padding-top:clamp(16px,2.4vw,26px);
  font-family:var(--xt-mono);font-size:12px;letter-spacing:.04em;
  color:var(--xt-muted);
}
.xt-footer__legal-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.xt-footer__legal a{
  color:var(--xt-silver);
  border-bottom:1px solid var(--xt-line-strong);
  transition:color .2s var(--xt-ease),border-color .2s var(--xt-ease);
}
.xt-footer__legal a:hover{color:var(--xt-lime);border-bottom-color:var(--xt-lime)}
.xt-footer__slash{color:var(--xt-muted);opacity:.6}
.xt-footer__scale{
  height:12px;
  border-top:1px solid var(--xt-line);
  background:
    repeating-linear-gradient(90deg,var(--xt-line-strong) 0 1px,rgba(0,0,0,0) 1px 12px),
    repeating-linear-gradient(90deg,rgba(199,255,60,.34) 0 1px,rgba(0,0,0,0) 1px 96px);
}

/* ============================================================
   14. 响应式
   ============================================================ */
@media (max-width:960px){
  .xt-grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .xt-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .xt-footer__col:last-child{grid-column:1 / -1}
}

@media (max-width:760px){
  body{font-size:15.5px}
  .xt-scalebar__meta{display:none}
  .xt-masthead__inner{grid-template-columns:minmax(0,1fr);gap:16px;justify-items:center}
  .xt-masthead__aside{
    align-items:center;text-align:center;justify-content:center;
    flex-direction:row;flex-wrap:wrap;gap:10px;
    width:100%;border-top:1px solid var(--xt-line);
  }
  .xt-masthead__aside--r{justify-content:center}
  .xt-masthead__cta{align-self:center}
  .xt-nav-toggle{display:flex}
  .xt-nav__list{display:none;flex-direction:column;align-items:stretch;justify-content:flex-start;padding-top:6px}
  .xt-nav[data-open="true"] .xt-nav__list{display:flex}
  .xt-nav__item{width:100%}
  .xt-nav__item + .xt-nav__item::before{display:none}
  .xt-nav__link{
    display:block;width:100%;
    padding:11px 0;
    font-size:15px;
    border-bottom:1px dashed var(--xt-line);
  }
  .xt-nav__link::after{display:none}
  .xt-footer__grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .xt-footer__col:last-child{grid-column:auto}
  .xt-footer__contact{grid-template-columns:minmax(0,1fr);gap:2px 0}
  .xt-footer__contact dt{padding-top:12px}
  .xt-footer__legal{flex-direction:column;align-items:flex-start}
}

@media (max-width:640px){
  .xt-grid--2,.xt-grid--3{grid-template-columns:minmax(0,1fr)}
  .xt-section__head{flex-direction:column;align-items:flex-start}
  .xt-prose{max-width:none}
  .xt-filterbar__count{margin-left:0;width:100%}
}

/* 平板中间态：刊头不挤压 */
@media (min-width:761px) and (max-width:1000px){
  .xt-masthead__inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:18px}
  .xt-masthead__state,.xt-masthead__cta{font-size:11.5px}
}

/* ---------- 15. 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;
    scroll-behavior:auto !important;
  }
  .xt-progress__bar{transition:none}
}