/* =========================================================
   南宫体育 · 共享样式 /assets/site.css
   夜幕墨绿 + 荧光青 + 射手榜金橙 + 精密网格
   ========================================================= */

/* 1. Reset */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0}
html.nav-open,html.nav-open body{overflow:hidden}

/* 2. 设计变量 */
:root{
  --ink:#061C17;
  --panel:#0B2E26;
  --cyan:#00F5D4;
  --gold:#F5B841;
  --alert:#E5484D;
  --paper:#F4F1E8;
  --muted:#9DB0A8;
  --grid:#2E4F46;
  --violet:#6E5AA8;
  --wine:#7A2636;

  --ink-soft:#12211C;
  --line-soft:#C9D6D1;
  --text-dim:#CBD8D3;

  --font-display:"Arial Narrow","Helvetica Neue","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-serif:Georgia,"Songti SC","Noto Serif SC",serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --container:1240px;
  --gutter:clamp(16px,4vw,48px);
  --header-h:76px;
  --gap:clamp(16px,2.6vw,32px);
  --step:8px;
}

/* 3. 基础排版 */
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.08;
  letter-spacing:.01em;
}
p{max-width:72ch}
strong{font-weight:700;color:var(--paper)}
::selection{background:var(--cyan);color:var(--ink)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
hr{border:0;border-top:1px solid var(--grid);margin:0}

/* 4. 布局工具 */
.container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{
  position:relative;
  padding-block:clamp(40px,6vw,88px);
}
.section--paper{
  background:var(--paper);
  color:var(--ink-soft);
}
.section--paper .lede,
.section--paper .prose{color:#26382F}
.section--panel{
  background:var(--panel);
  border-block:1px solid var(--grid);
}
.rule{width:100%;height:1px;background:var(--grid);border:0;margin-block:clamp(20px,3vw,36px)}
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--5-7{grid-template-columns:5fr 7fr}
.grid--4-8{grid-template-columns:4fr 8fr}

/* 5. 文本组件 */
.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:28px;
  height:1px;
  background:var(--cyan);
  flex:0 0 auto;
}
.page-title{
  font-size:clamp(30px,5.2vw,58px);
  letter-spacing:-.012em;
  color:var(--paper);
}
.section--paper .page-title{color:var(--ink-soft)}
.lede{
  font-family:var(--font-serif);
  font-size:clamp(15px,1.6vw,18px);
  line-height:1.85;
  color:var(--line-soft);
  max-width:60ch;
  margin-top:clamp(14px,2vw,22px);
}
.prose{
  max-width:68ch;
  font-size:16.5px;
  line-height:1.85;
  color:#DCE5E1;
}
.prose p + p{margin-top:1em}
.prose h2{
  font-size:clamp(21px,2.6vw,28px);
  margin-top:1.6em;
  margin-bottom:.6em;
  padding-top:.7em;
  border-top:1px solid var(--grid);
}
.prose h3{
  font-size:clamp(17px,1.9vw,20px);
  margin-top:1.4em;
  margin-bottom:.5em;
}
.prose ul{list-style:none;margin:.8em 0}
.prose ul li{
  position:relative;
  padding-left:18px;
  margin-bottom:.4em;
}
.prose ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:8px;
  height:1px;
  background:var(--cyan);
}
.prose a{color:var(--cyan);text-decoration:none;border-bottom:1px solid var(--grid)}
.prose a:hover{border-bottom-color:var(--cyan)}
.prose--legal{line-height:1.9;font-size:15.5px}
.section--paper .prose{color:#26382F}
.section--paper .prose h2,
.section--paper .prose h3{color:var(--ink-soft)}
.section--paper .prose h2{border-top-color:#C9C2AE}
.section--paper .prose ul li::before{background:var(--wine)}

/* 6. 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border-radius:0;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  line-height:1;
  text-decoration:none;
  border:1px solid var(--cyan);
  background:var(--cyan);
  color:var(--ink);
  cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.btn:hover,.btn:focus-visible{
  background:var(--paper);
  border-color:var(--paper);
  color:var(--ink);
  transform:translateY(-1px);
}
.btn--primary{
  box-shadow:inset 0 0 0 1px rgba(6,28,23,.18);
}
.btn--ghost{
  background:transparent;
  color:var(--paper);
  border-color:var(--grid);
}
.btn--ghost:hover,.btn--ghost:focus-visible{
  background:transparent;
  color:var(--cyan);
  border-color:var(--cyan);
}

/* 7. 面包屑 */
.breadcrumbs{
  margin-block:clamp(18px,3vw,28px) 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
}
.breadcrumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  color:var(--muted);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item + .breadcrumbs__item::before{
  content:"/";
  color:var(--grid);
}
.breadcrumbs__link{
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumbs__current{color:var(--paper)}

/* 8. 面板与数据组件 */
.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--grid);
  border-radius:0;
  padding:clamp(18px,2.4vw,28px);
}
.section--paper .panel{
  background:#EFEBDF;
  border-color:#C9C2AE;
  color:var(--ink-soft);
}
.stat{display:block}
.stat__value{
  display:block;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(28px,5vw,48px);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--gold);
}
.stat__label{
  display:block;
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--muted);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  border:1px solid currentColor;
  border-radius:0;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  line-height:1.4;
  color:var(--cyan);
  background:rgba(0,245,212,.06);
}
.tag--gold{color:var(--gold);background:rgba(245,184,65,.08)}
.tag--alert{color:var(--alert);background:rgba(229,72,77,.08)}
.tag--violet{color:#B7A8E8;background:rgba(110,90,168,.16)}

/* 9. 图片容器基础（页面阶段放入真实占位图） */
.media-frame{
  position:relative;
  display:block;
  margin:0;
  aspect-ratio:16/9;
  background:var(--panel);
  border:1px solid var(--grid);
  overflow:hidden;
}
.media-frame img,
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(205deg,rgba(0,245,212,.16),transparent 46%,rgba(122,38,54,.18));
  mix-blend-mode:screen;
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
}

/* 10. 头部 */
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  padding:10px 16px;
  background:var(--cyan);
  color:var(--ink);
  font-family:var(--font-display);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  text-decoration:none;
  transform:translateY(-160%);
  transition:transform .2s ease;
}
.skip-link:focus-visible{transform:translateY(0)}

.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:linear-gradient(180deg,rgba(6,28,23,.82) 0%,rgba(6,28,23,.28) 100%);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header[data-scrolled="true"]{
  background:var(--ink);
  border-bottom-color:var(--grid);
  box-shadow:0 18px 40px -30px #000;
  backdrop-filter:blur(0);
  -webkit-backdrop-filter:blur(0);
}
.site-header__inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  min-height:var(--header-h);
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(46,79,70,.45);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--cyan) 68%,var(--gold) 100%);
}

.site-header__brand{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color:var(--paper);
  flex:0 0 auto;
}
.brand-mark{
  position:relative;
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  flex:0 0 auto;
  border:1px solid var(--cyan);
  color:var(--cyan);
  font-family:var(--font-display);
  font-size:12px;
  font-weight:800;
  letter-spacing:.06em;
  line-height:1;
}
.brand-mark::after{
  content:"";
  position:absolute;
  right:-4px;
  bottom:-4px;
  width:8px;
  height:8px;
  background:var(--gold);
}
.brand-text{display:block}
.brand-line{
  display:block;
  font-family:var(--font-display);
  font-size:clamp(15px,1.4vw,18px);
  font-weight:800;
  letter-spacing:.06em;
  line-height:1.2;
  color:var(--paper);
}
.brand-descriptor{
  display:block;
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}

.site-header__nav-wrap{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.2vw,36px);
  margin-left:auto;
}
.site-nav{display:block}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.5vw,24px);
}
.site-nav__item{display:block}
.site-nav__link{
  position:relative;
  display:inline-block;
  padding:10px 2px;
  font-family:var(--font-display);
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--text-dim);
  text-decoration:none;
  transition:color .22s ease;
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible{color:var(--cyan)}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--cyan)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--cyan)}

.site-header__actions{
  display:flex;
  align-items:center;
  gap:16px;
}
.utility-nav{
  display:flex;
  align-items:center;
  gap:14px;
  padding-left:16px;
  border-left:1px solid var(--grid);
}
.utility-nav__item{display:block}
.utility-nav__link{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
  text-decoration:none;
  transition:color .2s ease;
}
.utility-nav__link:hover,
.utility-nav__link:focus-visible{color:var(--cyan)}
.utility-nav__link[aria-current="page"]{color:var(--cyan)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:9px 12px;
  border:1px solid var(--grid);
  background:transparent;
  color:var(--paper);
  font-family:var(--font-display);
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  width:100%;
  background:var(--cyan);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle__label{line-height:1}
.site-header[data-open="true"] .nav-toggle{border-color:var(--cyan);color:var(--cyan)}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 11. 页脚 */
.site-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(48px,7vw,96px);
  padding-block:clamp(44px,6vw,80px) 28px;
  background:linear-gradient(180deg,var(--panel) 0%,var(--ink) 52%);
  border-top:1px solid var(--grid);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(90deg,rgba(46,79,70,.45) 0 1px,transparent 1px 96px);
  opacity:.55;
  pointer-events:none;
}
.site-footer > *{position:relative;z-index:1}

.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:clamp(24px,3vw,48px);
}
.footer-brand__line{
  font-family:var(--font-display);
  font-size:clamp(22px,2.6vw,28px);
  font-weight:800;
  letter-spacing:.06em;
  color:var(--paper);
}
.footer-tagline{
  margin-top:12px;
  max-width:30ch;
  font-family:var(--font-serif);
  font-size:15px;
  line-height:1.85;
  color:var(--line-soft);
}
.footer-rule{
  width:64px;
  height:2px;
  margin-block:20px;
  background:var(--cyan);
  position:relative;
}
.footer-rule::after{
  content:"";
  position:absolute;
  right:-12px;
  top:0;
  width:8px;
  height:2px;
  background:var(--gold);
}
.footer-note{
  max-width:38ch;
  font-size:12.5px;
  line-height:1.8;
  color:var(--muted);
}

.footer-col{display:block}
.footer-col__title{
  padding-top:14px;
  margin-bottom:16px;
  border-top:1px solid var(--grid);
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
  line-height:1.4;
}
.footer-links{display:grid;gap:10px}
.footer-link{
  display:inline-block;
  font-size:14px;
  letter-spacing:.04em;
  color:var(--line-soft);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-link:hover,
.footer-link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer-link--legal{font-size:12px;letter-spacing:.1em;color:var(--muted)}

.footer-contact__list{display:grid;gap:12px}
.footer-contact__row{display:grid;gap:2px}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer-contact__value{
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1.7;
  letter-spacing:.02em;
  color:var(--paper);
  word-break:break-word;
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  margin-top:clamp(32px,5vw,58px);
  padding-top:20px;
  border-top:1px solid var(--grid);
}
.footer-legal__links{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
}
.footer-legal__icp,
.footer-copy{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
}

/* 12. 显现动效 */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .4s ease,transform .4s ease;
  will-change:opacity,transform;
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* 13. 响应式 */
@media (max-width:1180px){
  .utility-nav{display:none}
}
@media (max-width:980px){
  :root{--header-h:64px}
  .nav-toggle{display:inline-flex}
  .site-header__brand{margin-right:0}
  .site-header__nav-wrap{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    bottom:0;
    z-index:95;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-left:0;
    padding:24px var(--gutter) 48px;
    background:linear-gradient(180deg,var(--panel) 0%,var(--ink) 100%);
    border-top:1px solid var(--grid);
    overflow-y:auto;
    overscroll-behavior:contain;
  }
  .site-header[data-open="true"] .site-header__nav-wrap{display:flex}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__link{
    display:block;
    padding:16px 0;
    font-size:17px;
    letter-spacing:.1em;
    border-bottom:1px solid rgba(46,79,70,.7);
  }
  .site-nav__link::after{bottom:0}
  .site-nav__link[aria-current="page"]{border-bottom-color:var(--cyan)}
  .site-header__actions{
    flex-direction:column;
    align-items:stretch;
    gap:18px;
    margin-top:26px;
  }
  .utility-nav{
    display:flex;
    order:2;
    padding-left:0;
    border-left:0;
    border-top:1px solid var(--grid);
    padding-top:18px;
    gap:22px;
  }
  .utility-nav__link{font-size:12px}
  .site-header__actions .btn{width:100%;padding:15px 18px}
  .brand-descriptor{display:none}
}
@media (max-width:900px){
  .grid--2,
  .grid--5-7,
  .grid--4-8{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:640px){
  :root{--gutter:18px}
  body{font-size:15.5px}
  .footer-grid{grid-template-columns:1fr}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-legal__links{gap:16px}
  .brand-mark{width:34px;height:34px;font-size:11px}
  .site-nav__link{font-size:16px}
}

/* 14. 动效偏好 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .btn:hover,.btn:focus-visible{transform:none}
}