/* ===== 链接体育 · 共享样式 /assets/site.css ===== */

/* --- 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,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}

/* --- 变量 --- */
:root{
  --ink-void:#060B18;
  --ink-navy:#0B1426;
  --ink-panel:#111E38;
  --ink-line:#1E3054;
  --cyan:#4FF0DC;
  --cyan-deep:#16B9A6;
  --orange:#FF7A1A;
  --orange-mist:#FFC08A;
  --text:#E9F1FF;
  --text-mute:#9BB0CE;
  --text-weak:#63779A;
  --rail-w:264px;
  --content-max:1180px;
  --gutter:20px;
  --radius-lg:20px;
  --radius-md:14px;
  --font-display:"Barlow Condensed","Oswald","Noto Sans SC",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}
@media (min-width:1024px){:root{--gutter:36px}}

/* --- 基础排版 --- */
html,body{min-height:100%}
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--ink-void);
  background-image:
    linear-gradient(rgba(30,48,84,.28) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,48,84,.28) 1px,transparent 1px);
  background-size:120px 120px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
@media (min-width:1024px){body{padding-left:var(--rail-w)}}
main{display:block}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.12;letter-spacing:.01em}
strong{font-weight:700;color:var(--text)}
code,kbd,samp{font-family:var(--font-mono);font-size:.9em;color:var(--cyan)}
::selection{background:var(--cyan);color:#04140F}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

/* --- 跳转链接 --- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 18px;border-radius:10px;
  background:var(--cyan);color:#04140F;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  transform:translateY(-190%);
  transition:transform .26s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* --- 页头 / 框架式导航 --- */
.site-header{
  position:sticky;top:0;left:0;right:0;z-index:80;
  background:#070D1C;
  border-bottom:1px solid var(--ink-line);
}
.site-header__rail{
  display:flex;flex-direction:row;flex-wrap:wrap;align-items:center;
  gap:14px 16px;
  padding:13px 16px 15px;
}
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;
  background:rgba(30,48,84,.6);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transition:width .12s linear;
}

.brand{display:flex;align-items:center;gap:12px;flex:1 1 auto;min-width:0}
.brand__mark{
  position:relative;flex:0 0 auto;
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:radial-gradient(circle at 30% 25%,rgba(79,240,220,.35),transparent 62%),var(--ink-panel);
  border:1px solid rgba(79,240,220,.55);
}
.brand__pulse{
  width:11px;height:11px;border-radius:50%;
  background:var(--cyan);
  animation:pulse 2.6s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(79,240,220,.55)}
  70%{box-shadow:0 0 0 12px rgba(79,240,220,0)}
  100%{box-shadow:0 0 0 0 rgba(79,240,220,0)}
}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{
  font-family:var(--font-display);font-weight:800;
  font-size:23px;line-height:1.05;letter-spacing:.03em;
}
.brand__sub{
  font-size:10.5px;letter-spacing:.14em;line-height:1.5;
  color:var(--text-weak);
}

.nav-toggle{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 15px;border-radius:999px;
  border:1px solid var(--ink-line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--text-mute);
  transition:border-color .22s,color .22s,background .22s;
}
.nav-toggle:hover{color:var(--cyan);border-color:rgba(79,240,220,.5)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .24s var(--ease),opacity .2s}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.site-nav__caption{
  display:flex;align-items:center;gap:10px;
  padding-bottom:10px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--text-weak);
}
.site-nav__caption::after{content:"";flex:1 1 auto;height:1px;background:var(--ink-line)}
.nav-list{display:grid;gap:2px}
.nav-link{
  position:relative;
  display:flex;align-items:baseline;gap:12px;
  padding:11px 16px 11px 14px;
  border-radius:2px 14px 14px 2px;
  color:var(--text-mute);
  font-family:var(--font-display);font-weight:700;
  font-size:19px;letter-spacing:.04em;line-height:1.3;
  transition:color .22s,background .22s,transform .22s var(--ease);
}
.nav-link__num{
  font-family:var(--font-mono);font-weight:400;
  font-size:11px;letter-spacing:.06em;color:var(--text-weak);
  transition:color .22s;
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:58%;border-radius:2px;background:var(--cyan);
  opacity:0;transform:translateY(-50%) scaleY(.25);
  transition:opacity .24s,transform .24s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(30,48,84,.5)}
.nav-link:hover::before{opacity:.55;transform:translateY(-50%) scaleY(1)}
.nav-link[aria-current="page"]{
  color:var(--text);
  background:linear-gradient(90deg,rgba(79,240,220,.16),rgba(79,240,220,0) 74%);
}
.nav-link[aria-current="page"]::before{opacity:1;transform:translateY(-50%) scaleY(1)}
.nav-link[aria-current="page"] .nav-link__num{color:var(--cyan)}

.site-utility{display:grid;gap:10px;padding-top:16px;border-top:1px solid var(--ink-line)}
.version-tag{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em}
.version-tag__key{color:var(--text-weak)}
.version-tag__val{
  padding:2px 9px;border-radius:5px;color:var(--cyan);
  border:1px solid rgba(79,240,220,.42);background:rgba(79,240,220,.08);
}
.site-utility__note{font-size:11.5px;line-height:1.6;color:var(--text-weak)}

@media (max-width:1023px){
  .site-nav,.site-utility{display:none}
  .site-nav{flex:1 1 100%;order:3;padding-top:6px}
  .site-utility{flex:1 1 100%;order:4}
  .site-header[data-open] .site-nav,
  .site-header[data-open] .site-utility{display:block;animation:fadeUp .3s var(--ease) both}
}
@media (min-width:1024px){
  .site-header{
    position:fixed;inset:0 auto 0 0;width:var(--rail-w);
    border-bottom:0;border-right:1px solid var(--ink-line);
    background:linear-gradient(180deg,#0B1426 0%,#070D1C 58%,#060B18 100%);
  }
  .site-header__rail{
    flex-direction:column;flex-wrap:nowrap;
    height:100%;padding:26px 20px 26px;
    gap:0;
  }
  .nav-toggle{display:none}
  .site-nav{display:block;flex:1 1 auto;padding-top:36px;margin-top:0}
  .site-utility{margin-top:auto}
  .scroll-progress{left:var(--rail-w);right:0}
}

/* --- 磁贴式按钮 --- */
.magnet{
  display:flex;flex-direction:column;gap:3px;
  padding:13px 16px;border-radius:var(--radius-md);
  background:linear-gradient(135deg,#FF8A33,var(--orange) 46%,#E85D00);
  color:#180B00;
  box-shadow:0 16px 34px -20px rgba(255,122,26,.95);
  transition:transform .22s var(--ease),box-shadow .22s,filter .22s;
}
.magnet:hover{transform:translateY(-2px);filter:brightness(1.07);box-shadow:0 20px 40px -20px rgba(255,122,26,1)}
.magnet__label{font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:.03em;line-height:1.25}
.magnet__meta{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.06em;opacity:.72}
.magnet--sm .magnet__label{font-size:16px}
.magnet--inline{flex-direction:row;align-items:baseline;justify-content:space-between;gap:14px;width:fit-content}
.magnet--ghost{
  background:transparent;color:var(--cyan);
  border:1px solid rgba(79,240,220,.42);box-shadow:none;
}
.magnet--ghost:hover{background:rgba(79,240,220,.1);border-color:var(--cyan);filter:none}

/* --- 通用按钮 --- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-display);font-weight:800;font-size:16px;letter-spacing:.04em;
  transition:transform .22s var(--ease),background .22s,color .22s,border-color .22s;
}
.btn--solid{background:var(--cyan);color:#04140F}
.btn--solid:hover{background:var(--cyan-deep);transform:translateY(-2px)}
.btn--warn{background:var(--orange);color:#180B00}
.btn--warn:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn--ghost{border-color:var(--ink-line);color:var(--text-mute)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}

/* --- 容器与章节 --- */
.wrap{width:100%;max-width:var(--content-max);margin-inline:auto;padding-inline:var(--gutter)}
.wrap--narrow{max-width:780px}
.section{position:relative;padding-block:clamp(52px,7vw,104px)}
.section--tight{padding-block:clamp(32px,4vw,58px)}
.section--panel{
  background:linear-gradient(180deg,rgba(11,20,38,.92),rgba(11,20,38,.35));
  border-top:1px solid var(--ink-line);
  border-bottom:1px solid var(--ink-line);
}
.section-head{display:flex;flex-direction:column;gap:14px;margin-bottom:clamp(26px,4vw,46px);max-width:74ch}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan)}
.display-title{font-size:clamp(34px,6vw,68px);line-height:1.04;letter-spacing:.01em}
.lede{font-size:clamp(16px,1.35vw,19px);line-height:1.8;color:var(--text-mute);max-width:64ch}
.note{
  font-size:13.5px;line-height:1.75;color:var(--text-weak);
  border-left:2px solid var(--ink-line);padding-left:14px;
}

/* --- 面包屑 --- */
.breadcrumb{padding-block:22px 0}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--text-weak);
}
.breadcrumb__list li{display:flex;align-items:center;gap:10px}
.breadcrumb__list li + li::before{content:"/";color:var(--ink-line)}
.breadcrumb__list a{color:var(--text-mute);transition:color .2s}
.breadcrumb__list a:hover{color:var(--cyan)}
.breadcrumb__list [aria-current="page"]{color:var(--cyan)}

/* --- 网格 --- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

/* --- 卡片 --- */
.card{
  position:relative;
  padding:24px 22px 22px;
  border:1px solid var(--ink-line);
  border-radius:var(--radius-lg);
  background:linear-gradient(158deg,rgba(17,30,56,.96),rgba(11,20,38,.7));
  transition:transform .26s var(--ease),border-color .26s,box-shadow .26s;
}
.card::before{
  content:"";position:absolute;left:22px;top:-1px;width:34px;height:2px;
  border-radius:0 0 2px 2px;background:var(--cyan);opacity:.9;
}
.card:hover{transform:translateY(-4px);border-color:rgba(79,240,220,.42);box-shadow:0 26px 54px -36px rgba(79,240,220,.6)}
.card__title{font-family:var(--font-display);font-weight:800;font-size:23px;line-height:1.25}
.card__body{margin-top:10px;font-size:15px;line-height:1.72;color:var(--text-mute)}
.card__meta{
  display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--text-weak);
}
.card__detail{
  display:none;margin-top:16px;padding-top:16px;
  border-top:1px dashed var(--ink-line);
  font-size:14.5px;line-height:1.76;color:var(--text-mute);
}
.card[data-expanded] .card__detail{display:block;animation:fadeUp .32s var(--ease) both}
.card__toggle{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--cyan);border-bottom:1px solid transparent;transition:border-color .2s;
}
.card__toggle:hover{border-bottom-color:var(--cyan)}
.card__toggle::after{content:"＋";font-size:13px;line-height:1}
.card[data-expanded] .card__toggle::after{content:"－"}

/* --- 标签 --- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  border:1px solid var(--ink-line);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;color:var(--text-mute);
}
.tag--cyan{border-color:rgba(79,240,220,.45);color:var(--cyan)}
.tag--orange{border-color:rgba(255,122,26,.5);color:var(--orange-mist)}

/* --- 筛选 --- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-chip{
  padding:7px 15px;border-radius:999px;
  border:1px solid var(--ink-line);
  background:rgba(17,30,56,.55);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--text-mute);
  transition:background .2s,color .2s,border-color .2s;
}
.filter-chip:hover{color:var(--text);border-color:rgba(79,240,220,.45)}
.filter-chip[aria-pressed="true"]{background:var(--cyan);border-color:var(--cyan);color:#04140F}
[data-hidden="true"]{display:none !important}

/* --- 统计条 --- */
.meter{display:grid;gap:8px}
.meter__head{display:flex;justify-content:space-between;gap:12px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--text-mute)}
.meter__value{color:var(--cyan)}
.meter__track{height:6px;border-radius:999px;background:rgba(30,48,84,.85);overflow:hidden}
.meter__fill{
  display:block;height:100%;width:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--cyan-deep),var(--cyan));
  transform:scaleX(0);transform-origin:left center;
  transition:transform 1s var(--ease);
}
[data-meter][data-visible] .meter__fill{transform:scaleX(1)}

/* --- 显现 --- */
[data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
[data-reveal][data-visible]{opacity:1;transform:none}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes reveal{from{opacity:0}to{opacity:1}}

/* --- 图片容器 --- */
.media{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--ink-line);border-radius:var(--radius-lg);
  background:
    radial-gradient(120% 90% at 14% 10%,rgba(79,240,220,.16),transparent 56%),
    radial-gradient(90% 80% at 86% 92%,rgba(255,122,26,.14),transparent 62%),
    linear-gradient(160deg,#0B1426,#060B18);
}
.media img,.media video{width:100%;height:100%;object-fit:cover}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(79,240,220,.05) 0 1px,transparent 1px 4px);
}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:1;
  padding:14px 18px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--text-mute);
  background:linear-gradient(0deg,rgba(6,11,24,.94),transparent);
}

/* --- 页脚 --- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,92px);
  padding-block:clamp(44px,6vw,78px) 30px;
  background:linear-gradient(180deg,#0B1426,#060B18 72%);
  border-top:1px solid var(--ink-line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;
  width:min(260px,42%);height:1px;
  background:linear-gradient(90deg,var(--cyan),transparent);
}
.footer-grid{
  display:grid;gap:clamp(26px,4vw,40px);
  grid-template-columns:repeat(auto-fit,minmax(170px,1fr));
}
@media (min-width:900px){.footer-grid{grid-template-columns:1.9fr 1fr 1fr 1fr 1fr}}
.footer-brand{display:grid;gap:14px;align-content:start}
.footer-brand__name{font-family:var(--font-display);font-weight:800;font-size:26px;letter-spacing:.03em}
.footer-brand__desc{font-size:14px;line-height:1.78;color:var(--text-mute);max-width:34ch}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--cyan);
}
.footer-col__list{display:grid;gap:9px}
.footer-col__list a{
  display:inline-block;font-size:14px;color:var(--text-mute);
  transition:color .2s,transform .2s var(--ease);
}
.footer-col__list a:hover{color:var(--text);transform:translateX(4px)}
.footer-col__list a[aria-current="page"]{color:var(--cyan)}
.footer-base{
  display:flex;flex-wrap:wrap;gap:10px 30px;justify-content:space-between;align-items:flex-start;
  margin-top:clamp(34px,5vw,56px);padding-top:22px;
  border-top:1px solid var(--ink-line);
  font-size:12.5px;line-height:1.7;color:var(--text-weak);
}
.footer-base__contact{flex:1 1 320px}
.footer-base__legal{flex:1 1 260px}
.footer-base__copy{flex:0 0 auto}

/* --- 动效降级 --- */
@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}
  [data-meter] .meter__fill{transform:scaleX(1)}
  .brand__pulse{animation:none;box-shadow:0 0 0 5px rgba(79,240,220,.18)}
}