/* ============================================================
   博万体育主站 · 共享样式 /assets/site.css
   夜场墨绿底 + 荧光青描边 + 暖橙数据高亮
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-padding-top:calc(var(--bar-h) + 28px);
}
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;margin:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
[hidden]{display:none !important}
table{border-collapse:collapse;width:100%}

/* ---------- 2. tokens ---------- */
:root{
  --ink:#0B1F1A;
  --ink-2:#102E28;
  --panel:#163A33;
  --cyan:#4CE0C0;
  --cyan-deep:#18B58F;
  --amber:#FF9A3C;
  --amber-soft:#FFC37A;
  --mist:#E9FFF9;
  --slate:#8C9AA6;
  --paper:#F2F5F3;

  --bg:var(--ink);
  --bg-2:var(--ink-2);
  --surface:var(--panel);
  --text:var(--mist);
  --text-dim:var(--slate);
  --data:var(--amber);
  --hairline:rgba(76,224,192,.28);
  --hairline-strong:rgba(76,224,192,.62);
  --accent-soft:rgba(76,224,192,.08);
  --accent-soft-2:rgba(76,224,192,.16);
  --bar-bg:rgba(11,31,26,.92);
  --shadow-print:2px 2px 0 rgba(76,224,192,.30);

  --font-display:"Archivo Narrow","Arial Narrow","Helvetica Neue",system-ui,"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-body:system-ui,-apple-system,"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Consolas,Menlo,monospace;

  --rail:112px;
  --bar-h:64px;
  --shell:1280px;
  --gap:clamp(16px,2.2vw,30px);
  --radius:2px;
}

/* ---------- 3. 纸面浅底阅读模式 ---------- */
html[data-reading="light"]{
  --bg:var(--paper);
  --bg-2:#E6ECE8;
  --surface:#FFFFFF;
  --text:#0B1F1A;
  --text-dim:#4C5D58;
  --slate:#5D6E69;
  --cyan:#0E8A70;
  --cyan-deep:#12A182;
  --amber:#D9720A;
  --amber-soft:#FFC37A;
  --data:#B85C08;
  --hairline:rgba(11,31,26,.16);
  --hairline-strong:rgba(11,31,26,.40);
  --accent-soft:rgba(14,138,112,.08);
  --accent-soft-2:rgba(14,138,112,.16);
  --bar-bg:rgba(242,245,243,.94);
  --shadow-print:2px 2px 0 rgba(11,31,26,.14);
}

/* ---------- 4. base ---------- */
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  min-height:100vh;
  padding-left:var(--rail);
  padding-top:calc(var(--bar-h) + 4px);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::after{
  content:"";
  position:fixed;
  top:0;right:0;bottom:0;
  width:1px;
  background:linear-gradient(180deg,transparent,var(--hairline-strong) 12%,var(--hairline-strong) 88%,transparent);
  pointer-events:none;
  z-index:80;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.15;letter-spacing:-.02em}
p{max-width:74ch}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:2px}
#main-content{display:block}
#main-content:focus{outline:none}

.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:300;
  transform:translateY(-180%);
  background:var(--cyan);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:700;
  font-size:14px;
  letter-spacing:.02em;
  padding:11px 18px;
  border-radius:var(--radius);
  transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 5. 布局容器与网格 ---------- */
.shell{
  width:min(100%,var(--shell));
  margin-inline:auto;
  padding-inline:clamp(16px,3vw,40px);
}
.grid{display:grid;gap:var(--gap)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

/* ---------- 6. 框架：进度状态条 ---------- */
.progress-rail{
  position:fixed;
  top:0;left:0;right:0;
  height:4px;
  background:var(--bg-2);
  z-index:120;
  pointer-events:none;
}
.progress-rail__fill{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--cyan-deep),var(--cyan) 70%,var(--amber));
  transition:width .16s linear;
}

/* ---------- 7. 头部：顶部状态条 ---------- */
.site-header{position:relative;z-index:100}
.site-header__bar{
  position:fixed;
  top:4px;left:var(--rail);right:0;
  height:var(--bar-h);
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,24px);
  padding:0 clamp(14px,2.4vw,28px);
  background:var(--bar-bg);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--hairline);
  z-index:110;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  flex:0 0 auto;
  padding:4px 2px;
}
.brand__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(18px,1.6vw,21px);
  letter-spacing:-.02em;
  color:var(--text);
  white-space:nowrap;
}
.brand__badge{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--cyan);
  border:1px solid var(--hairline-strong);
  border-radius:var(--radius);
  padding:2px 8px;
  white-space:nowrap;
}
.brand:hover .brand__name{color:var(--cyan)}
.brand--footer{align-items:center;padding:0}

.quick-strip{
  display:flex;
  align-items:center;
  gap:2px;
  flex:0 1 auto;
  min-width:0;
  overflow:hidden;
}
.quick-strip__item{
  font-size:13.5px;
  color:var(--text-dim);
  padding:7px 10px;
  border:1px solid transparent;
  border-radius:var(--radius);
  white-space:nowrap;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.quick-strip__item:hover{
  color:var(--cyan);
  border-color:var(--hairline);
  background:var(--accent-soft);
}

.utility{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  flex:0 0 auto;
}
.utility__link{
  font-size:13.5px;
  color:var(--text-dim);
  padding:7px 11px;
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  white-space:nowrap;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.utility__link:hover{color:var(--cyan);border-color:var(--hairline-strong);background:var(--accent-soft)}
.utility__mode{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--cyan);
  border:1px solid var(--hairline-strong);
  border-radius:var(--radius);
  padding:7px 11px;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.utility__mode:hover{background:var(--accent-soft)}
.utility__mode[aria-pressed="true"]{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}
.utility__lang{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--text-dim);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--cyan);
  border:1px solid var(--hairline-strong);
  border-radius:var(--radius);
  padding:8px 12px;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-toggle__bars{display:grid;gap:3px;width:15px}
.nav-toggle__bar{display:block;height:1.5px;background:currentColor;border-radius:1px}
.site-header[data-open] .nav-toggle{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}

/* ---------- 8. 头部：左侧纵向框架导航 ---------- */
.rail-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--rail);
  display:flex;
  flex-direction:column;
  background:var(--bg-2);
  border-right:1px solid var(--hairline);
  z-index:105;
}
.rail-nav__cap{
  height:calc(var(--bar-h) + 4px);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-bottom:1px solid var(--hairline);
  flex:0 0 auto;
}
.rail-nav__pulse{
  width:10px;height:10px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 0 rgba(76,224,192,.55);
  animation:rail-pulse 900ms ease-in-out infinite;
}
@keyframes rail-pulse{
  0%,100%{opacity:.45;transform:scale(.85)}
  50%{opacity:1;transform:scale(1.06)}
}
.rail-nav__cap-mark{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--text-dim);
}
.rail-nav__list{
  flex:1 1 auto;
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:12px 8px 20px;
  overflow-y:auto;
}
.rail-nav__item{display:block}
.rail-nav__link{
  display:flex;
  flex-direction:column;
  gap:3px;
  padding:12px 8px 12px 10px;
  border-left:2px solid transparent;
  border-radius:var(--radius);
  color:var(--text-dim);
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.rail-nav__index{
  font-family:var(--font-serif);
  font-size:14px;
  letter-spacing:.04em;
  color:var(--text-dim);
  opacity:.8;
}
.rail-nav__label{
  font-family:var(--font-display);
  font-weight:700;
  font-size:14px;
  letter-spacing:.02em;
  line-height:1.25;
}
.rail-nav__link:hover{color:var(--cyan);background:var(--accent-soft);border-left-color:var(--hairline-strong)}
.rail-nav__link[aria-current="page"]{
  color:var(--cyan);
  background:var(--accent-soft-2);
  border-left-color:var(--cyan);
}
.rail-nav__link[aria-current="page"] .rail-nav__index{color:var(--data);opacity:1}

/* ---------- 9. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:var(--bg-2);
  border-top:1px solid var(--hairline);
}
.site-footer__status{
  height:4px;
  background:repeating-linear-gradient(90deg,var(--cyan) 0 22px,transparent 22px 46px);
  opacity:.45;
}
.site-footer__inner{
  width:min(100%,var(--shell));
  margin-inline:auto;
  padding:clamp(32px,4vw,60px) clamp(16px,3vw,40px) 0;
  display:grid;
  grid-template-columns:1.5fr .8fr .8fr .8fr 1.5fr;
  gap:clamp(22px,2.6vw,38px);
  align-items:start;
}
.site-footer__brand{display:grid;gap:14px;align-content:start}
.site-footer__line{
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-dim);
  max-width:34ch;
  border-left:2px solid var(--hairline-strong);
  padding-left:12px;
}
.footer-nav__col{display:block}
.footer-nav__title{
  font-family:var(--font-mono);
  font-weight:400;
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--cyan);
  padding-bottom:10px;
  margin-bottom:14px;
  border-bottom:1px solid var(--hairline);
}
.footer-nav__list{display:grid;gap:11px}
.footer-nav__link{
  display:inline-block;
  font-size:14.5px;
  color:var(--text-dim);
  transition:color .18s ease,transform .18s ease;
}
.footer-nav__link:hover{color:var(--cyan);transform:translateX(3px)}

.footer-contact{display:block}
.footer-contact__list{display:grid;gap:0}
.footer-contact__row{
  display:flex;
  gap:12px;
  align-items:baseline;
  padding:9px 0;
  border-bottom:1px dashed var(--hairline);
}
.footer-contact__key{
  flex:0 0 42px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--text-dim);
}
.footer-contact__val{
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1.6;
  color:var(--text);
  word-break:break-word;
}
.site-footer__note{
  margin-top:14px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--text-dim);
  max-width:38ch;
}
.site-footer__bottom{
  width:min(100%,var(--shell));
  margin:clamp(28px,3vw,46px) auto 0;
  padding:18px clamp(16px,3vw,40px) clamp(24px,3vw,34px);
  border-top:1px solid var(--hairline);
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  align-items:center;
  justify-content:space-between;
}
.site-footer__legal{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--text-dim);
}
.site-footer__copy{
  font-size:12.5px;
  color:var(--text-dim);
  letter-spacing:.04em;
}

/* ---------- 10. 通用组件 ---------- */
.chapter{
  padding:clamp(36px,5vw,72px) 0;
  border-top:1px solid var(--hairline);
}
.chapter:first-of-type{border-top:0}
.chapter__head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:clamp(14px,2vw,30px);
  align-items:start;
  margin-bottom:clamp(18px,2.4vw,32px);
}
.chapter__index{
  font-family:var(--font-serif);
  font-weight:400;
  font-size:clamp(42px,6vw,86px);
  line-height:.85;
  letter-spacing:-.04em;
  color:var(--cyan);
  opacity:.38;
}
.chapter__title{
  font-size:clamp(25px,3.3vw,38px);
  color:var(--text);
}
.chapter__lede{
  margin-top:10px;
  font-size:16px;
  line-height:1.75;
  color:var(--text-dim);
}

.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--text-dim);
}
.crumb__link{color:var(--cyan)}
.crumb__link:hover{text-decoration:underline;text-underline-offset:3px}
.crumb__sep{color:var(--hairline-strong)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  letter-spacing:.02em;
  padding:11px 20px;
  border:1px solid var(--hairline-strong);
  border-radius:var(--radius);
  color:var(--cyan);
  background:transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{background:var(--accent-soft-2);transform:translateY(-1px)}
.btn--primary{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}
.btn--primary:hover{background:var(--cyan-deep);border-color:var(--cyan-deep);color:var(--ink)}
.btn--ghost{color:var(--text);border-color:var(--hairline)}
.btn--sm{font-size:13px;padding:8px 14px}

.card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  padding:clamp(16px,1.8vw,24px);
  box-shadow:var(--shadow-print);
}
.card__label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--cyan);
  border:1px solid var(--hairline-strong);
  border-radius:var(--radius);
  padding:2px 8px;
  margin-bottom:12px;
}
.card__title{font-size:19px;line-height:1.3;margin-bottom:8px;letter-spacing:-.01em}
.card__meta{font-size:13px;color:var(--text-dim)}
.card__data{
  font-family:var(--font-mono);
  font-size:clamp(20px,2.4vw,30px);
  line-height:1.1;
  color:var(--data);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.card__note{margin-top:10px;font-size:13px;line-height:1.65;color:var(--text-dim)}
.card__fold{margin-top:14px;padding-top:14px;border-top:1px dashed var(--hairline)}

.stat{display:flex;flex-direction:column;gap:5px}
.stat__value{
  font-family:var(--font-mono);
  font-size:clamp(22px,2.6vw,32px);
  line-height:1;
  color:var(--data);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat__unit{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--text-dim);
  margin-left:5px;
}
.stat__label{font-size:13px;color:var(--text-dim)}

.tag{
  display:inline-flex;
  align-items:center;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  padding:3px 9px;
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  color:var(--text-dim);
}
.tag--accent{color:var(--ink);background:var(--amber);border-color:var(--amber)}
.tag--muted{color:var(--text-dim);border-style:dashed}

.prose{
  max-width:74ch;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
}
.prose > * + *{margin-top:1.2em}
.prose__title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(22px,2.4vw,30px);
  letter-spacing:-.02em;
  color:var(--text);
}

.media{
  display:block;
  margin:0;
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  overflow:hidden;
  background:linear-gradient(140deg,var(--bg-2),var(--surface));
}
.media__img{
  display:block;
  width:100%;
  height:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.media--wide .media__img{aspect-ratio:21/9}
.media--tall .media__img{aspect-ratio:4/5}
.media__caption{
  padding:10px 12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.6;
  color:var(--text-dim);
  background:var(--bg-2);
  border-top:1px solid var(--hairline);
}

.toc{
  display:grid;
  gap:2px;
  padding-left:12px;
  border-left:1px solid var(--hairline);
}
.toc__link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:7px 9px;
  border-radius:var(--radius);
  font-size:14px;
  color:var(--text-dim);
  transition:color .18s ease,background .18s ease;
}
.toc__link:hover{color:var(--cyan);background:var(--accent-soft)}
.toc__link[data-active]{color:var(--cyan);background:var(--accent-soft-2);box-shadow:inset 2px 0 0 var(--cyan)}
.toc__index{
  font-family:var(--font-serif);
  font-size:13px;
  color:var(--text-dim);
}

.data-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
  color:var(--data);
}

/* ---------- 11. 动效 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateX(-12px);
  transition:opacity .24s ease-out,transform .24s ease-out;
}
[data-reveal][data-revealed]{opacity:1;transform:none}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1180px){
  .quick-strip{display:none}
}
@media (max-width:1100px){
  .site-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer__brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
}
@media (max-width:900px){
  :root{--rail:0px;--bar-h:56px}
  body{padding-left:0;padding-top:calc(var(--bar-h) + 4px)}
  body::after{display:none}
  body.is-nav-open{overflow:hidden}
  .site-header__bar{top:4px;padding:0 clamp(12px,4vw,20px)}
  .utility__link{display:none}
  .nav-toggle{display:inline-flex}
  .rail-nav{
    top:calc(var(--bar-h) + 4px);
    left:0;right:0;bottom:auto;
    width:100%;
    max-height:calc(100vh - var(--bar-h) - 4px);
    border-right:0;
    border-bottom:1px solid var(--hairline-strong);
    overflow-y:auto;
    visibility:hidden;
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  .site-header[data-open] .rail-nav{
    visibility:visible;
    opacity:1;
    transform:translateY(0);
    pointer-events:auto;
  }
  .rail-nav__cap{display:none}
  .rail-nav__list{padding:10px 12px 18px;gap:4px}
  .rail-nav__link{flex-direction:row;align-items:baseline;gap:14px;padding:13px 10px}
  .rail-nav__label{font-size:16px}
  .chapter__head{grid-template-columns:1fr;gap:8px}
  .chapter__index{font-size:44px}
  .grid--12 .span-4,.grid--12 .span-6,.grid--12 .span-8{grid-column:span 12}
}
@media (max-width:560px){
  .brand__badge{display:none}
  .utility__lang{display:none}
  .site-footer__inner{grid-template-columns:1fr}
  .site-footer__brand,.footer-contact{grid-column:auto}
  .site-footer__bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- 13. 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;
  }
  [data-reveal]{opacity:1;transform:none}
}