/* ============================================================
   迈博体育 · 共享样式表 /assets/site.css
   目录型数据台骨架：深墨绿底 · 荧光青强调 · 等宽索引
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-900:#04231B;
  --ink-850:#05271E;
  --ink-800:#02180F;
  --panel:#0A2F26;
  --panel-2:#0E3A30;
  --accent:#29F2C0;
  --accent-soft:#8DF7DE;
  --hot:#FF5A2E;
  --hot-soft:#FFA98C;
  --slate:#2A3C46;
  --muted:#A6BAC2;
  --text:#EDF6F3;
  --line:#16262C;

  --shell:1240px;
  --gutter:clamp(16px,4vw,40px);
  --r-lg:28px;
  --r-md:18px;
  --r-sm:12px;
  --r-pill:999px;
  --header-h:72px;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"DejaVu Sans Mono",monospace;

  --ease:cubic-bezier(.22,.72,.24,1);
  --dur:.24s;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 20px);
}

body{
  margin:0;
  background-color:var(--ink-900);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* 战术板网格底纹，只在页面上缘显影 */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(42,60,70,.34) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(42,60,70,.34) 1px,transparent 1px);
  background-size:76px 76px;
  -webkit-mask-image:radial-gradient(120% 78% at 50% 0%,#000 0%,transparent 74%);
  mask-image:radial-gradient(120% 78% at 50% 0%,#000 0%,transparent 74%);
  opacity:.8;
}

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

h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.16;letter-spacing:-.02em;}

p,figure,blockquote,dl,dd{margin:0;}

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

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

button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}

table{border-collapse:collapse;width:100%;}

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

/* ---------- 3. 排版工具 ---------- */
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.08em;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--accent);
}
.eyebrow::before{
  content:"";
  width:20px;
  height:1px;
  background:currentColor;
  opacity:.85;
}

/* ---------- 4. 布局 ---------- */
.shell{
  width:min(100% - (var(--gutter) * 2),var(--shell));
  margin-inline:auto;
}

.grid{
  display:grid;
  gap:clamp(16px,2.6vw,28px);
}

.grid-12{grid-template-columns:repeat(12,minmax(0,1fr));}

/* ---------- 5. 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:44px;
  padding:10px 22px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:background-color var(--dur) var(--ease),
             color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             transform var(--dur) var(--ease);
}

.btn-primary{background:var(--accent);color:var(--ink-900);}
.btn-primary:hover{background:var(--accent-soft);transform:translateY(-1px);}

.btn-ghost{border-color:rgba(41,242,192,.42);color:var(--accent-soft);}
.btn-ghost:hover{border-color:var(--accent);background:rgba(41,242,192,.1);}

.btn-hot{background:var(--hot);color:#FFF3EF;}
.btn-hot:hover{background:#FF7248;transform:translateY(-1px);}

.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(20px,3vw,32px);
}

.panel-soft{
  background:linear-gradient(155deg,rgba(14,58,48,.92),rgba(4,35,27,.72));
}

.stat-chip{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(41,242,192,.32);
  background:rgba(41,242,192,.1);
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--accent-soft);
}
.stat-chip b{font-weight:700;color:var(--accent);}

.stat-hot{
  border-color:rgba(255,90,46,.42);
  background:rgba(255,90,46,.12);
  color:var(--hot-soft);
}
.stat-hot b{color:var(--hot);}

/* 图片容器基础规则：页面阶段把 img / picture 直接放进来 */
.media{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(150deg,var(--panel-2),var(--ink-800));
}
.media > img,
.media > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(2,24,15,0) 42%,rgba(2,24,15,.78));
}
.media-16x9{aspect-ratio:16 / 9;}
.media-4x3{aspect-ratio:4 / 3;}
.media-3x2{aspect-ratio:3 / 2;}
.media-1x1{aspect-ratio:1 / 1;}

.media-tag{
  position:absolute;
  left:16px;
  bottom:14px;
  z-index:2;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--accent-soft);
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{content:"/";color:var(--slate);}
.breadcrumb a{color:var(--muted);transition:color var(--dur) var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb [aria-current="page"]{color:var(--text);}

.prose{max-width:66ch;}
.prose p{font-size:16.5px;line-height:1.85;color:#CFE2DC;}
.prose p + p{margin-top:1.15em;}
.prose h2{font-size:clamp(24px,3.2vw,34px);margin-top:2.4em;margin-bottom:.6em;}
.prose h3{font-size:clamp(19px,2.2vw,22px);margin-top:1.8em;margin-bottom:.5em;}
.prose ul,
.prose ol{margin-top:1em;padding-left:1.35em;color:#CFE2DC;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-top:.45em;}
.prose strong{font-weight:700;color:var(--text);}
.prose a{color:var(--accent);border-bottom:1px solid rgba(41,242,192,.35);}
.prose a:hover{border-bottom-color:var(--accent);}

/* 等宽章节索引条（长内容页常驻） */
.lane-index{
  position:sticky;
  top:calc(var(--header-h) + 24px);
  align-self:start;
  display:flex;
  flex-direction:column;
  gap:2px;
  border-left:1px solid var(--line);
  padding-left:4px;
}
.lane-index a{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:8px 12px;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  border-left:2px solid transparent;
  font-size:13.5px;
  color:var(--muted);
  transition:color var(--dur) var(--ease),
             background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease);
}
.lane-index a .idx{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--slate);
}
.lane-index a:hover{color:var(--text);background:rgba(41,242,192,.06);}
.lane-index a[aria-current="true"]{
  color:var(--accent);
  border-left-color:var(--accent);
  background:rgba(41,242,192,.09);
}
.lane-index a[aria-current="true"] .idx{color:var(--accent);}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:45;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  border-radius:50%;
  background:var(--panel);
  border:1px solid rgba(41,242,192,.35);
  color:var(--accent);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),
             transform var(--dur) var(--ease),
             visibility var(--dur) linear,
             background-color var(--dur) var(--ease);
}
.to-top::before{
  content:"";
  width:10px;
  height:10px;
  border-left:2px solid currentColor;
  border-top:2px solid currentColor;
  transform:rotate(45deg) translate(1px,1px);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:rgba(41,242,192,.16);}

/* 滚动显现 */
[data-reveal]{opacity:1;}
html.js-on [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .38s var(--ease),transform .38s var(--ease);
}
html.js-on [data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 6. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:40;
  background:linear-gradient(to bottom,rgba(4,35,27,.92),rgba(4,35,27,0));
  border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),
             border-color .3s var(--ease),
             box-shadow .3s var(--ease);
}
.site-header[data-state="solid"]{
  background:rgba(4,35,27,.95);
  border-bottom-color:var(--line);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  backdrop-filter:saturate(140%) blur(12px);
}

.skip-link{
  position:absolute;
  left:16px;
  top:-64px;
  z-index:60;
  padding:10px 20px;
  border-radius:var(--r-pill);
  background:var(--accent);
  color:var(--ink-900);
  font-weight:700;
  font-size:14px;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px;}

.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  min-height:var(--header-h);
  padding-block:10px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  border-radius:14px;
  padding:2px;
}

.brand-mark{
  position:relative;
  width:38px;
  height:38px;
  border-radius:12px;
  overflow:hidden;
  background:linear-gradient(140deg,var(--accent) 0%,#0C8F6E 56%,var(--ink-800) 100%);
  box-shadow:0 0 0 1px rgba(41,242,192,.32),0 10px 22px -14px rgba(41,242,192,.85);
}
.brand-mark::before{
  content:"";
  position:absolute;
  left:11px;
  top:9px;
  right:9px;
  bottom:11px;
  border-right:2px solid rgba(4,35,27,.72);
  border-bottom:2px solid rgba(4,35,27,.72);
  border-radius:0 0 8px 0;
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:11px;
  top:9px;
  width:2px;
  height:18px;
  background:rgba(4,35,27,.72);
}

.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--muted);
  margin-top:3px;
}

.site-nav{margin-left:auto;}

.nav-list{display:flex;align-items:center;gap:2px;}

.nav-list a{
  display:inline-flex;
  align-items:center;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  font-weight:600;
  color:var(--muted);
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-list a:hover{color:var(--text);background:rgba(41,242,192,.08);}
.nav-list a[aria-current="page"]{
  color:var(--ink-900);
  background:var(--accent);
  font-weight:700;
}

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:6px;
}

.header-cta{padding-inline:18px;font-size:14.5px;}

.nav-toggle{
  position:relative;
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:14px;
  border:1px solid rgba(41,242,192,.35);
  color:var(--accent);
  flex:0 0 auto;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{background:rgba(41,242,192,.1);}
.nav-toggle-label{
  position:absolute;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}
.nav-toggle .bars{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:background-color .2s var(--ease);
}
.nav-toggle .bars::before,
.nav-toggle .bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease),top .22s var(--ease);
}
.nav-toggle .bars::before{top:-6px;}
.nav-toggle .bars::after{top:6px;}

.site-header[data-open] .nav-toggle{border-color:var(--accent);background:rgba(41,242,192,.14);}
.site-header[data-open] .nav-toggle .bars{background:transparent;}
.site-header[data-open] .nav-toggle .bars::before{top:0;transform:rotate(45deg);}
.site-header[data-open] .nav-toggle .bars::after{top:0;transform:rotate(-45deg);}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,var(--accent),var(--hot));
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
  transition:transform .12s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:clamp(64px,9vw,140px);
  padding-block:clamp(44px,6vw,80px) 26px;
  border-top:1px solid rgba(42,60,70,.7);
  background:
    radial-gradient(120% 90% at 8% 0%,rgba(41,242,192,.09),transparent 58%),
    linear-gradient(180deg,var(--ink-850),var(--ink-800));
}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(260px,1.5fr) repeat(3,minmax(140px,1fr));
  gap:clamp(26px,4vw,52px);
}

.footer-brand .brand{margin-bottom:18px;}

.footer-lede{
  max-width:34ch;
  font-size:14.5px;
  line-height:1.8;
  color:var(--muted);
}

.footer-contact{
  display:flex;
  gap:10px;
  margin-top:12px;
  font-size:13.5px;
  line-height:1.6;
  color:var(--muted);
}
.footer-key{
  flex:0 0 auto;
  min-width:64px;
  padding-top:2px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--accent);
}
.footer-value{color:#CBDDD7;}

.footer-col{min-width:0;}

.footer-title{
  padding-bottom:12px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:400;
  letter-spacing:.22em;
  color:var(--accent-soft);
}

.footer-list li + li{margin-top:10px;}
.footer-list a{
  font-size:14.5px;
  color:var(--muted);
  transition:color var(--dur) var(--ease);
}
.footer-list a:hover{color:var(--accent);}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 24px;
  margin-top:clamp(34px,4vw,56px);
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.footer-copy{color:var(--muted);}
.footer-legal{display:flex;flex-wrap:wrap;gap:8px 18px;}
.footer-legal a{transition:color var(--dur) var(--ease);}
.footer-legal a:hover{color:var(--accent);}
.footer-icp{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:#6E8791;
}

/* ---------- 8. 聚焦与动效偏好 ---------- */
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:8px;
}

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

/* ---------- 9. 响应式 ---------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:980px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));}
}

@media (max-width:960px){
  :root{--header-h:64px;}

  .header-actions{margin-left:auto;}
  .nav-toggle{display:inline-flex;}

  .site-nav{
    position:absolute;
    left:var(--gutter);
    right:var(--gutter);
    top:calc(100% + 8px);
    display:none;
    margin-left:0;
    padding:14px;
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    background:var(--panel);
    box-shadow:0 34px 60px -34px rgba(0,0,0,.95);
  }
  .site-header[data-open] .site-nav{display:block;}

  .nav-list{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-list a{
    padding:12px 16px;
    border-radius:14px;
    font-size:16px;
  }

  .lane-index{
    position:static;
    border-left:0;
    padding-left:0;
    flex-direction:row;
    flex-wrap:wrap;
    gap:6px;
  }
  .lane-index a{
    border-left:0;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    padding:7px 14px;
  }
  .lane-index a[aria-current="true"]{
    border-color:rgba(41,242,192,.5);
    background:rgba(41,242,192,.12);
  }
}

@media (max-width:600px){
  body{font-size:15.5px;}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));}
  .prose p{font-size:16px;}

  .brand-sub{display:none;}
  .brand-mark{width:34px;height:34px;}
  .brand-name{font-size:16px;}

  .footer-grid{grid-template-columns:1fr;}
  .footer-icp{margin-left:0;}
  .footer-base{gap:10px 16px;}
}