/* =========================================================
   悟空体育 · 共享样式表  /assets/site.css
   视觉语言：夜巡蓝底 · 筋斗云金线 · 荧光数据点
   ========================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-950:#050910;
  --ink-900:#0B1220;
  --ink-800:#111C30;
  --ink-700:#1A2A44;
  --gold-500:#D8A13A;
  --gold-300:#F0C96B;
  --lava:#FF6A2B;
  --jade:#28C08A;
  --text:#E8E2D6;
  --text-dim:#C9C2B6;

  --font-sans:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1180px;
  --pad:clamp(16px,4vw,40px);
  --line:2px solid var(--ink-700);
  --hard:7px 7px 0 0 #02050B;
  --ease:cubic-bezier(.22,.75,.3,1);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:3px solid var(--gold-300);outline-offset:2px}
::selection{background:var(--gold-500);color:var(--ink-950)}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(circle at 88% -8%, rgba(216,161,58,.13), transparent 46%),
    radial-gradient(circle at -6% 104%, rgba(40,192,138,.09), transparent 42%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-weight:900;line-height:1.22;letter-spacing:-.01em;color:var(--text)}
h1{font-size:clamp(1.85rem,4.4vw,3.2rem)}
h2{font-size:clamp(1.45rem,3vw,2.2rem)}
h3{font-size:clamp(1.12rem,1.9vw,1.45rem)}
h4{font-size:1.05rem}
strong,b{font-weight:800;color:var(--gold-300)}
.mono,code,kbd,samp{font-family:var(--font-mono);letter-spacing:.02em}
a:hover{color:var(--gold-300)}

/* ---------- 4. 布局容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.prose p{max-width:70ch}
.prose p+p{margin-top:14px}
.prose strong{font-weight:800}

/* ---------- 5. 跳转链接 ---------- */
.skip-link{
  position:absolute;left:var(--pad);top:-120px;z-index:200;
  padding:10px 18px;
  background:var(--gold-500);color:var(--ink-950);
  font-weight:800;font-size:14px;letter-spacing:.06em;
  border:2px solid var(--gold-300);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:10px}

/* ---------- 6. 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink-950);
  border-bottom:2px solid var(--ink-700);
  box-shadow:0 12px 34px rgba(0,0,0,.6);
}
.header-rail{
  background:linear-gradient(90deg,var(--ink-950) 0%,#0A1424 55%,var(--ink-950) 100%);
  border-bottom:1px solid var(--ink-700);
}
.header-rail__inner{
  display:flex;align-items:center;gap:18px;
  padding-block:9px;min-height:60px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand:hover{color:inherit}
.brand__mark{
  width:38px;height:38px;flex:0 0 38px;
  display:grid;place-items:center;
  background:var(--gold-500);color:var(--ink-950);
  font-family:var(--font-sans);font-size:19px;font-weight:900;line-height:1;
  border:2px solid var(--gold-300);
  box-shadow:3px 3px 0 var(--ink-700);
}
.brand__text{display:block}
.brand__name{display:block;font-size:18px;font-weight:900;letter-spacing:.1em;color:var(--gold-300);line-height:1.25}
.brand__line{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--text-dim);line-height:1.5}
.header-rail__meta{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--text-dim);
  padding-left:16px;border-left:2px solid var(--gold-500);
  white-space:nowrap;
}
.header-rail__cta{margin-left:auto}

/* 导航层 */
.header-deck{background:var(--ink-900)}
.header-deck__inner{display:flex;align-items:center;gap:10px}
.nav{flex:1 1 auto;min-width:0}
.nav__list{
  display:flex;align-items:stretch;gap:2px;
  overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--ink-700) transparent;
}
.nav__list::-webkit-scrollbar{height:4px}
.nav__list::-webkit-scrollbar-thumb{background:var(--ink-700)}
.nav__item{display:block}
.nav__link{
  display:block;padding:14px 18px;
  font-size:15px;font-weight:700;color:var(--text-dim);
  border-bottom:3px solid transparent;
  white-space:nowrap;
  transition:color .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease);
}
.nav__link:hover{color:var(--gold-300);background:var(--ink-800)}
.nav__link[aria-current="page"]{
  color:var(--ink-950);background:var(--gold-500);
  border-bottom-color:var(--gold-300);
}
.header-deck__hint{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:rgba(201,194,182,.45);white-space:nowrap;
}
.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 15px;
  background:var(--ink-800);color:var(--gold-300);
  border:2px solid var(--gold-500);
  font-weight:800;font-size:14px;letter-spacing:.1em;
}
.nav-toggle:hover{background:rgba(216,161,58,.14)}
.nav-toggle__bars{position:relative;display:block;width:20px;height:2px;background:currentColor}
.nav-toggle__bars::before,
.nav-toggle__bars::after{content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}

/* 滚动进度轨 */
.scroll-progress{
  position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--gold-500),var(--gold-300) 58%,var(--jade));
  transform:scaleX(0);transform-origin:0 50%;
  will-change:transform;pointer-events:none;z-index:5;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ink-950);
  border-top:3px solid var(--gold-500);
  color:var(--text-dim);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr .9fr 1.35fr;
  gap:clamp(22px,3vw,44px);
  padding-block:clamp(38px,5.5vw,62px) clamp(24px,3.5vw,38px);
}
.footer-col__title{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--gold-500);font-weight:700;
  margin-bottom:16px;padding-bottom:10px;
  border-bottom:1px solid var(--ink-700);
}
.footer-brand__name{
  font-size:23px;font-weight:900;letter-spacing:.08em;color:var(--text);
}
.footer-brand__line{
  margin-top:12px;font-size:14px;line-height:1.8;max-width:34ch;
  color:var(--text-dim);
}
.footer-brand__meta{
  margin-top:14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--gold-500);
  padding:5px 10px;border:1px solid var(--ink-700);display:inline-block;
}
.footer-links a{
  display:block;padding:8px 0;font-size:14.5px;
  border-bottom:1px dashed rgba(26,42,68,.95);
  transition:color .16s var(--ease),padding-left .16s var(--ease);
}
.footer-links a::before{
  content:"›";font-family:var(--font-mono);color:var(--gold-500);margin-right:8px;
}
.footer-links a:hover{color:var(--gold-300);padding-left:6px}
.footer-tags li{
  display:flex;align-items:center;gap:9px;
  font-size:14px;padding:6px 0;color:var(--text-dim);
}
.footer-contact li{
  font-size:14px;line-height:1.75;padding:7px 0;
  border-bottom:1px dashed rgba(26,42,68,.7);
}
.footer-contact b{
  display:block;font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.12em;font-weight:600;color:var(--gold-500);
}
.footer-disclaimer{
  padding:16px 0 0;
  font-size:13px;line-height:1.75;color:rgba(201,194,182,.72);
  max-width:80ch;
  border-top:1px solid var(--ink-700);
}
.footer-base{
  margin-top:20px;
  border-top:1px solid var(--ink-700);
  padding-block:20px;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 26px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;
  color:rgba(201,194,182,.75);
}
.footer-base p{margin:0}
.footer-base__fill{margin-left:auto;color:var(--gold-500)}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;
  font-weight:800;font-size:14px;letter-spacing:.06em;
  background:var(--ink-800);color:var(--text);
  border:2px solid var(--ink-700);
  white-space:nowrap;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),
             background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:4px 4px 0 #02050B}
.btn:active{transform:translate(0,0);box-shadow:none}
.btn--gold{background:var(--gold-500);border-color:var(--gold-300);color:var(--ink-950)}
.btn--gold:hover{background:var(--gold-300);color:var(--ink-950)}
.btn--ghost{background:transparent;border-color:var(--gold-500);color:var(--gold-300)}
.btn--ghost:hover{background:rgba(216,161,58,.14)}

/* ---------- 9. 面包屑 ---------- */
.crumbs{padding-block:20px 0;font-size:13px;color:var(--text-dim)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:4px 10px;font-family:var(--font-mono)}
.crumbs li{display:flex;align-items:center;gap:10px}
.crumbs li::after{content:"/";color:var(--ink-700)}
.crumbs li:last-child::after{content:""}
.crumbs a:hover{color:var(--gold-300)}
.crumbs [aria-current="page"]{color:var(--gold-300)}

/* ---------- 10. 章节 ---------- */
.section{padding-block:clamp(40px,7vw,84px)}
.section--tight{padding-block:clamp(26px,4vw,46px)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px 24px;
  padding-bottom:16px;margin-bottom:clamp(22px,3vw,36px);
  border-bottom:2px solid var(--ink-700);
}
.section-num{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(2rem,5.6vw,3.5rem);line-height:.86;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1.6px var(--gold-500);
}
@supports not (-webkit-text-stroke:1px #000){.section-num{color:var(--gold-500)}}
.section-title{font-size:clamp(1.4rem,2.7vw,2rem);font-weight:900}
.section-kicker{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  color:var(--text-dim);text-transform:uppercase;
}
.section-head__aside{
  margin-left:auto;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.12em;color:var(--text-dim);
}

/* ---------- 11. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.2vw,26px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}

/* ---------- 12. 面板 / 数据 ---------- */
.panel{
  position:relative;
  background:var(--ink-800);
  border:var(--line);
  padding:clamp(18px,2.4vw,28px);
}
.panel--gold{border-color:var(--gold-500);box-shadow:var(--hard)}
.panel--flat{background:var(--ink-900)}
.panel__label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  color:var(--gold-500);margin-bottom:10px;
}
.stat{display:block}
.stat__value{
  display:block;font-family:var(--font-mono);font-weight:700;
  font-size:clamp(1.6rem,3.4vw,2.4rem);line-height:1.1;color:var(--gold-300);
}
.stat__key{display:block;margin-top:6px;font-size:12.5px;letter-spacing:.08em;color:var(--text-dim)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  border:1px solid currentColor;
}
.tag--gold{color:var(--gold-300)}
.tag--jade{color:var(--jade)}
.tag--lava{color:var(--lava)}
.dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--jade);box-shadow:0 0 0 3px rgba(40,192,138,.16);flex:0 0 8px;
}
.dot--gold{background:var(--gold-500);box-shadow:0 0 0 3px rgba(216,161,58,.16)}
.dot--lava{background:var(--lava);box-shadow:0 0 0 3px rgba(255,106,43,.16)}

/* ---------- 13. 图片容器 ---------- */
.figure{margin:0}
.media{
  position:relative;display:block;overflow:hidden;
  background:var(--ink-800);
  border:var(--line);
  aspect-ratio:16/9;
}
.media>img,.media>video{width:100%;height:100%;object-fit:cover;display:block}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(216,161,58,.15) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(216,161,58,.15) 1px,transparent 1px);
  background-size:44px 44px;
}
.media__tag{
  position:absolute;left:0;bottom:0;
  padding:6px 12px;
  background:var(--ink-950);color:var(--gold-300);
  border-top:2px solid var(--gold-500);border-right:2px solid var(--gold-500);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
}
.figure__cap{
  margin-top:10px;font-family:var(--font-mono);font-size:12.5px;
  letter-spacing:.04em;color:var(--text-dim);
}

/* ---------- 14. 标签页 ---------- */
.tabs{--tab-gap:0}
.tabs__list{
  display:flex;gap:0;overflow-x:auto;
  border-bottom:2px solid var(--ink-700);
  scrollbar-width:thin;
}
.tabs__tab{
  flex:0 0 auto;
  padding:12px 18px;margin-bottom:-2px;
  font-weight:800;font-size:14.5px;color:var(--text-dim);
  border-bottom:3px solid transparent;
  white-space:nowrap;
  transition:color .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease);
}
.tabs__tab:hover{color:var(--gold-300)}
.tabs__tab[aria-selected="true"]{
  color:var(--gold-300);
  border-bottom-color:var(--gold-500);
  background:rgba(216,161,58,.07);
}
.tabs__panel{padding-top:clamp(18px,2.4vw,28px)}
.tabs__panel[hidden]{display:none}

/* ---------- 15. 动效协议 ---------- */
[data-reveal]{opacity:1;transform:none}
.js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1000px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3,.grid--4,.grid--split{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .header-deck__inner{flex-wrap:wrap;padding-block:8px}
  .nav{order:3;flex:1 0 100%;display:none}
  .nav[data-open]{display:block}
  .nav__list{
    flex-direction:column;gap:0;overflow:visible;
    border-top:1px solid var(--ink-700);
    max-height:calc(100vh - 9rem);overflow-y:auto;
  }
  .nav__link{
    padding:15px 6px;font-size:17px;
    border-bottom:1px solid var(--ink-800);
    border-left:3px solid transparent;
  }
  .nav__link:hover{background:transparent}
  .nav__link[aria-current="page"]{
    background:var(--ink-800);color:var(--gold-300);
    border-bottom-color:var(--ink-700);
    border-left-color:var(--gold-300);
  }
  .header-deck__hint{display:none}
  .header-rail__meta{display:none}
  body.is-nav-open{overflow:hidden}
  .section-head__aside{margin-left:0;flex-basis:100%}
}
@media (max-width:640px){
  .grid--2,.grid--3,.grid--4,.grid--split{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-base__fill{margin-left:0}
  .header-rail__inner{gap:12px}
}
@media (max-width:560px){
  .brand__line{display:none}
  .header-rail__cta{padding:9px 14px;font-size:13px;letter-spacing:.03em}
  .brand__mark{width:34px;height:34px;flex-basis:34px;font-size:17px}
}

/* ---------- 17. 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .scroll-progress{transition:none}
}