/* ===========================================================
   JBO赛场 · 共享外壳样式  /assets/site.css
   深夜战术分析室：墨绿底、荧光青数据层、熔岩橙关键数字
   =========================================================== */

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

:root{
  --ink:#0B1F1A;
  --ink-deep:#07120F;
  --cyan:#3BE8CE;
  --cyan-soft:#9DF4E6;
  --lava:#FF6A2B;
  --white:#EDF7F3;
  --muted:#7E9A93;
  --gold:#E9C46A;
  --line:#1F3A33;
  --veil:rgba(59,232,206,.10);

  --font-display:'Archivo Narrow','Noto Sans SC','PingFang SC','Heiti SC',sans-serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono','IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1280px;
  --gutter:clamp(1.15rem,4vw,3.25rem);
  --ease:cubic-bezier(.22,.7,.24,1);
  --slant:6deg;
  color-scheme:dark;
}

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

body{
  margin:0;
  background:var(--ink);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}

/* 球场俯视网格：低透明度背景层，仅在右上角透出 */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(59,232,206,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(59,232,206,.055) 1px,transparent 1px);
  background-size:88px 88px;
  -webkit-mask-image:radial-gradient(115% 85% at 80% 2%,#000 0%,transparent 66%);
  mask-image:radial-gradient(115% 85% at 80% 2%,#000 0%,transparent 66%);
}

main{
  position:relative;
  z-index:1;
  display:block;
}

/* ---------- 文字层级 ---------- */
h1,h2,h3,h4{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.08;
  letter-spacing:-.02em;
  text-transform:uppercase;
  color:var(--white);
}
h1{font-size:clamp(2.6rem,7vw,7.5rem);line-height:1.02}
h2{font-size:clamp(1.9rem,4.4vw,3.4rem)}
h3{font-size:clamp(1.25rem,2.2vw,1.75rem);letter-spacing:0}
h4{font-size:1.05rem;letter-spacing:.04em}

p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}

a{
  color:var(--cyan);
  text-decoration:none;
  transition:color .2s var(--ease);
}
a:hover{color:var(--cyan-soft)}
strong{font-weight:700}
em{font-style:italic;color:var(--muted)}

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

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

::selection{background:var(--cyan);color:#04120F}

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

/* ---------- 跳至正文 ---------- */
.skip-link{
  position:absolute;
  left:var(--gutter);
  top:-4.5rem;
  z-index:90;
  padding:.7rem 1.1rem;
  background:var(--cyan);
  color:#04120F;
  font-size:.85rem;
  font-weight:700;
  letter-spacing:.08em;
  text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% 70%,calc(100% - 12px) 100%,0 100%);
  transition:top .22s var(--ease);
}
.skip-link:focus{top:.6rem;color:#04120F}

.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;
}

/* ---------- 头部：双层信息导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(7,18,15,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}

.header-shell{
  position:relative;
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding-inline:var(--gutter);
}

.header-upper{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding-block:.55rem;
  border-bottom:1px solid var(--line);
  max-height:3.6rem;
  overflow:hidden;
  transition:max-height .4s var(--ease),opacity .3s var(--ease),
             padding .4s var(--ease),border-color .3s var(--ease);
}
.site-header.is-condensed .header-upper{
  max-height:0;
  opacity:0;
  padding-block:0;
  border-color:transparent;
}

.brand-line{
  margin:0;
  min-width:0;
  font-size:.76rem;
  letter-spacing:.14em;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.utility-link{
  flex:none;
  padding:.15rem 0;
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.06em;
  white-space:nowrap;
  color:var(--cyan);
  border-bottom:1px solid rgba(59,232,206,.42);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.utility-link:hover{color:var(--cyan-soft);border-color:var(--cyan-soft)}

.header-lower{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1.25rem;
  padding-block:.85rem;
  transition:padding .35s var(--ease);
}
.site-header.is-condensed .header-lower{padding-block:.62rem}

.brand{
  display:inline-flex;
  align-items:center;
  gap:.65rem;
  flex:none;
  color:var(--white);
  text-decoration:none;
}
.brand:hover{color:var(--white)}

.brand-mark{
  width:26px;
  height:26px;
  flex:none;
  background:linear-gradient(150deg,var(--cyan) 0 52%,rgba(59,232,206,.22) 52% 100%);
  clip-path:polygon(0 0,100% 0,100% 58%,0 100%);
}

.brand-name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.3rem;
  line-height:1;
  letter-spacing:.02em;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  padding:.5rem .8rem;
  background:transparent;
  border:1px solid var(--line);
  color:var(--white);
  font:inherit;
  font-size:.78rem;
  letter-spacing:.14em;
  cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% 72%,calc(100% - 11px) 100%,0 100%);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(59,232,206,.55);color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan)}

.nav-toggle-bars{display:grid;gap:4px;width:16px;flex:none}
.nav-toggle-bars span{
  display:block;
  height:1.5px;
  background:currentColor;
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

.site-nav{display:flex;align-items:center;min-width:0}

.nav-list{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:clamp(.9rem,2.1vw,2.1rem);
}
.nav-list > li{display:block}

.nav-link{
  position:relative;
  display:inline-block;
  padding:.35rem 0;
  color:var(--white);
  font-size:.94rem;
  letter-spacing:.06em;
  white-space:nowrap;
  text-decoration:none;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0) skewX(calc(var(--slant) * -1));
  transform-origin:left center;
  transition:transform .3s var(--ease);
}
.nav-link:hover{color:var(--cyan-soft)}
.nav-link:hover::after,
.nav-link:focus-visible::after{transform:scaleX(1) skewX(calc(var(--slant) * -1))}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1) skewX(calc(var(--slant) * -1))}

.header-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--cyan-soft) 45%,var(--lava) 100%);
  transform:scaleX(0);
  transform-origin:left center;
  pointer-events:none;
}

@keyframes navDrop{
  from{opacity:0;transform:translateY(-10px)}
  to{opacity:1;transform:none}
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:clamp(3rem,8vw,7rem);
  padding-block:clamp(2.5rem,6vw,5rem) clamp(1.5rem,3vw,2.5rem);
  background:var(--ink-deep);
  border-top:1px solid var(--line);
}

.footer-shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding-inline:var(--gutter);
}

.footer-top{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:1.5rem;
  padding-bottom:clamp(1.6rem,3vw,2.6rem);
  border-bottom:1px solid var(--line);
}

.footer-identity{
  margin:0;
  max-width:22ch;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(1.35rem,3.2vw,2.3rem);
  line-height:1.16;
  letter-spacing:-.01em;
  color:var(--white);
}

.footer-cta{flex:none}

.footer-nav{
  padding-block:clamp(1.6rem,3.5vw,2.6rem);
  border-bottom:1px solid var(--line);
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(158px,1fr));
  gap:.8rem 1.5rem;
}

.footer-link{
  display:inline-block;
  font-size:.94rem;
  letter-spacing:.05em;
  color:var(--cyan-soft);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover{color:var(--cyan);border-color:var(--cyan)}

.footer-contact{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:1.25rem;
  padding-block:clamp(1.6rem,3.5vw,2.6rem);
  border-bottom:1px solid var(--line);
}

.contact-list{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:1rem 2rem;
  margin:0;
}
.contact-item{margin:0}

.contact-label{
  margin:0 0 .3rem;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--muted);
}

.contact-value{
  margin:0;
  font-size:.95rem;
  color:var(--white);
  word-break:break-word;
}

.footer-note{
  margin:0;
  max-width:62ch;
  font-size:.82rem;
  line-height:1.8;
  font-style:italic;
  color:var(--muted);
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:.75rem 2rem;
  padding-top:clamp(1.2rem,2.5vw,1.8rem);
}

.footer-legal{
  margin:0;
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.06em;
  color:var(--muted);
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  padding:.9rem 1.45rem;
  font-family:var(--font-display);
  font-weight:800;
  font-size:.82rem;
  line-height:1;
  letter-spacing:.1em;
  text-transform:uppercase;
  text-decoration:none;
  cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% 70%,calc(100% - 14px) 100%,0 100%);
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.btn-primary{background:var(--cyan);color:#04120F}
.btn-primary:hover{background:var(--cyan-soft);color:#04120F;transform:translateY(-2px)}
.btn-ghost{
  background:transparent;
  color:var(--cyan);
  box-shadow:inset 0 0 0 1px rgba(59,232,206,.5);
}
.btn-ghost:hover{
  background:var(--veil);
  color:var(--cyan-soft);
  box-shadow:inset 0 0 0 1px var(--cyan);
  transform:translateY(-2px);
}

/* ---------- 容器与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{
  position:relative;
  padding-block:clamp(3rem,7vw,6.5rem);
}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:1rem;
  margin-bottom:clamp(1.5rem,3vw,2.5rem);
}

.eyebrow{
  display:inline-block;
  margin:0 0 .9rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--cyan);
}

.lead{
  max-width:62ch;
  font-size:clamp(1rem,1.6vw,1.18rem);
  line-height:1.85;
  color:var(--white);
}

.annotation{
  margin:0;
  font-size:13px;
  font-style:italic;
  color:var(--muted);
}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums lining-nums;
  letter-spacing:-.02em;
}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(1rem,2.2vw,2.25rem);
}
.col-rail{grid-column:span 3;min-width:0}
.col-main{grid-column:span 9;min-width:0}
.col-half{grid-column:span 6;min-width:0}
.col-full{grid-column:span 12;min-width:0}

.col-rail.is-sticky{
  position:sticky;
  top:6.5rem;
  align-self:start;
}

/* ---------- 数据组件 ---------- */
.stat-figure{
  display:block;
  margin:0;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums lining-nums;
  font-size:clamp(3rem,8vw,7.5rem);
  line-height:.86;
  letter-spacing:-.04em;
  color:var(--white);
}
.stat-figure.is-cyan{color:var(--cyan)}
.stat-figure.is-accent{color:var(--lava)}

.stat-label{
  display:block;
  margin-top:.6rem;
  font-size:.8rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}

.data-strip{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:clamp(200px,24vw,300px);
  gap:1px;
  background:var(--line);
  border-block:1px solid var(--line);
  overflow-x:auto;
  overscroll-behavior-x:contain;
  scroll-snap-type:x proximity;
  scrollbar-width:thin;
  scrollbar-color:var(--line) transparent;
}
.data-strip > *{
  background:var(--ink);
  padding:1.35rem 1.2rem;
  scroll-snap-align:start;
  min-width:0;
}
.data-strip > *:nth-child(even){background:rgba(59,232,206,.06)}
.data-strip::-webkit-scrollbar{height:6px}
.data-strip::-webkit-scrollbar-track{background:transparent}
.data-strip::-webkit-scrollbar-thumb{background:var(--line)}

.timeline{
  position:relative;
  margin:0;
  padding:0;
  list-style:none;
}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;
  top:.4rem;
  bottom:.4rem;
  width:1px;
  background:var(--line);
}

.timeline-node{
  position:relative;
  padding-left:2.4rem;
  padding-block:.85rem;
}
.timeline-node::before{
  content:"";
  position:absolute;
  left:0;
  top:1.25rem;
  width:15px;
  height:15px;
  background:var(--ink);
  border:1px solid var(--cyan);
  transform:rotate(45deg);
  transition:background .25s var(--ease);
}
.timeline-node:hover::before,
.timeline-node:focus-within::before{background:var(--cyan)}
.timeline-node[data-current="true"]::before{
  background:var(--cyan);
  animation:nodePulse 1.2s ease-in-out infinite;
}

@keyframes nodePulse{
  0%,100%{box-shadow:0 0 0 0 rgba(59,232,206,.5)}
  70%{box-shadow:0 0 0 9px rgba(59,232,206,0)}
}

.tag{
  display:inline-block;
  padding:.22rem .55rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  border:1px solid var(--line);
}
.tag-friendly{color:var(--lava);border-color:rgba(255,106,43,.5)}
.tag-editor{color:var(--gold);border-color:rgba(233,196,106,.45)}

.cut-corner{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
}

/* ---------- 响应式图片容器 ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:3/2;
  overflow:hidden;
  background:var(--ink-deep);
  border:1px solid var(--line);
}
.media-frame[data-ratio="16x9"]{aspect-ratio:16/9}
.media-frame[data-ratio="4x3"]{aspect-ratio:4/3}
.media-frame[data-ratio="1x1"]{aspect-ratio:1/1}
.media-frame[data-ratio="21x9"]{aspect-ratio:21/9}
.media-frame > img,
.media-frame > video,
.media-frame > svg{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame > picture{
  position:absolute;
  inset:0;
  display:block;
}
.media-frame > picture > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:
    linear-gradient(158deg,transparent 38%,rgba(7,18,15,.72) 100%),
    repeating-linear-gradient(90deg,rgba(59,232,206,.05) 0 1px,transparent 1px 72px);
}
.media-caption{
  position:absolute;
  left:1rem;
  right:1rem;
  bottom:.9rem;
  z-index:2;
  margin:0;
  font-size:.78rem;
  font-style:italic;
  color:#CFEEE7;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-block:1.1rem 0}

.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  margin:0;
  padding:0;
  list-style:none;
  font-size:.78rem;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumb-list li{display:flex;align-items:center;gap:.45rem;min-width:0}
.breadcrumb-list li + li::before{
  content:"";
  width:5px;
  height:5px;
  flex:none;
  background:var(--line);
  transform:rotate(45deg);
}
.breadcrumb-list a{color:var(--muted);text-decoration:none}
.breadcrumb-list a:hover{color:var(--cyan)}
.breadcrumb-list [aria-current="page"]{color:var(--cyan-soft)}

/* ---------- 滚动显现 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .62s var(--ease),transform .62s var(--ease);
}
.reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  .nav-list{gap:clamp(.7rem,1.6vw,1.2rem)}
  .nav-link{font-size:.88rem}
}

@media (max-width:980px){
  .col-rail,
  .col-main,
  .col-half{grid-column:span 12}
  .col-rail.is-sticky{position:static;top:auto}
}

/* ---------- 移动端导航 ---------- */
@media (max-width:920px){
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    background:var(--ink-deep);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:1rem var(--gutter) 1.75rem;
    max-height:calc(100vh - 5rem);
    overflow-y:auto;
  }
  .site-nav[data-open="true"]{
    display:block;
    animation:navDrop .28s var(--ease) both;
  }

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    flex-wrap:nowrap;
    gap:0;
  }
  .nav-link{
    display:block;
    padding:.9rem 0;
    font-size:1.05rem;
    letter-spacing:.05em;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none}
  .nav-link:hover{color:var(--cyan-soft)}
  .nav-link[aria-current="page"]{
    color:var(--cyan);
    padding-left:1.1rem;
  }
  .nav-link[aria-current="page"]::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    width:.45rem;
    height:.45rem;
    background:var(--cyan);
    transform:translateY(-50%) rotate(45deg);
  }
}

@media (max-width:760px){
  .header-lower{gap:.75rem}
  .brand-name{font-size:1.15rem}
  .footer-top{align-items:flex-start}
}

@media (max-width:560px){
  .brand-line{display:none}
  .header-upper{justify-content:flex-end}
  .nav-toggle-text{display:none}
  .nav-toggle{padding:.55rem .65rem}
  .stat-figure{font-size:clamp(2.6rem,16vw,4rem)}
}

@media (min-width:760px){
  .footer-contact{
    grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);
    gap:2.5rem;
    align-items:start;
  }
}

/* ---------- 降低动态效果 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .header-progress{transition:none}
}