/* ============================================================
   易贝体育 · 共享样式 /assets/site.css
   轨道体系：夜赛深蓝打底 / 草皮绿作结构 / 荧光橙只在动手处
   ============================================================ */

/* 1. 重置 ------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
img,svg,picture{display:block;max-width:100%}
hr{border:0}

/* 2. 变量 ------------------------------------------------ */
:root{
  --ink-950:#0A1424;
  --ink-800:#14263D;
  --pitch-900:#0F3D2E;
  --pitch-600:#1E6F4C;
  --pitch-200:#B9D8C8;
  --signal:#FF6B2C;
  --signal-ink:#20100A;
  --paper:#F4F1EC;
  --paper-2:#EAE5DD;
  --line:#D8D2C8;
  --ink-900:#101418;
  --gray-500:#6B7580;
  --white:#FFFFFF;

  --rail:282px;
  --bar-h:68px;
  --maxw:1120px;
  --radius:2px;
  --gap:24px;

  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"SFMono-Regular",ui-monospace,Consolas,"Liberation Mono",Menlo,monospace;

  --ease:cubic-bezier(.22,.68,.28,1);
  --dur:.18s;
}

/* 3. 基础 ------------------------------------------------ */
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.006em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{font-weight:800;line-height:1.14;letter-spacing:-.02em}
h1{font-size:clamp(34px,6vw,60px)}
h2{font-size:clamp(26px,3.4vw,34px)}
h3{font-size:20px;line-height:1.3}
p{max-width:66ch}
strong{font-weight:800}
#main-content{display:block;scroll-margin-top:calc(var(--bar-h) + 16px)}

/* 4. 焦点与可访问 ---------------------------------------- */
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
:focus:not(:focus-visible){outline:none}
@media (max-width:1023.98px){
  html.is-nav-open{overflow:hidden}
}

/* 5. 容器与分区 ------------------------------------------ */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:22px}
.section{position:relative;padding-block:64px}
.section--paper{background:var(--paper)}
.section--paper-2{background:var(--paper-2)}
.section--deep{background:var(--ink-950);color:var(--white)}
.section--pitch{background:var(--pitch-900);color:var(--white)}
.section--deep p,.section--pitch p{color:rgba(244,241,236,.86)}
.section--deep h2,.section--pitch h2,.section--deep h3,.section--pitch h3{color:var(--white)}

/* 6. 网格 ------------------------------------------------ */
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.grid--split{grid-template-columns:1fr;gap:32px}
@media (min-width:900px){
  .grid--split{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:start;gap:44px}
}

/* 7. 排版辅助 -------------------------------------------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  margin-bottom:14px;
  font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--pitch-600);
}
.eyebrow::before{content:"";width:24px;height:1px;flex:none;background:currentColor}
.section--deep .eyebrow,.section--pitch .eyebrow{color:var(--pitch-200)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.lead{max-width:62ch;font-size:19px;line-height:1.7;color:var(--gray-500)}
.section--deep .lead,.section--pitch .lead{color:rgba(244,241,236,.78)}
.prose{max-width:68ch}
.prose p+p{margin-top:1em}
.prose h3{margin-top:1.8em;margin-bottom:.6em}
.prose ul{margin-top:1em}
.prose li{position:relative;margin-top:.5em;padding-left:18px}
.prose li::before{content:"";position:absolute;left:0;top:.78em;width:8px;height:1px;background:var(--pitch-600)}
.rule{height:1px;margin-block:32px;background:var(--line)}
.section--deep .rule,.section--pitch .rule{background:rgba(185,216,200,.22)}

/* 8. 按钮 ------------------------------------------------ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border:1px solid transparent;border-radius:var(--radius);
  font-size:14px;font-weight:700;line-height:1.2;letter-spacing:.06em;text-align:center;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),
             color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn--signal{background:var(--signal);border-color:var(--signal);color:var(--signal-ink)}
.btn--ink{background:var(--pitch-900);border-color:var(--pitch-900);color:var(--white)}
.btn--ghost{background:transparent;border-color:rgba(185,216,200,.42);color:var(--pitch-200)}
.btn--quiet{background:transparent;border-color:var(--line);color:var(--ink-900)}
@media (hover:hover){
  .btn--signal:hover{background:#FF834F;border-color:#FF834F;transform:translateY(-2px)}
  .btn--ink:hover{background:var(--pitch-600);border-color:var(--pitch-600);transform:translateY(-2px)}
  .btn--ghost:hover{border-color:var(--signal);color:var(--signal)}
  .btn--quiet:hover{border-color:var(--signal);color:var(--signal)}
}

/* 9. 标签 ------------------------------------------------ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;border:1px solid var(--line);border-radius:1px;
  background:transparent;color:var(--gray-500);
  font-size:11px;font-weight:700;letter-spacing:.14em;
  transition:background-color .12s var(--ease),border-color .12s var(--ease),color .12s var(--ease);
}
.tag[aria-pressed="true"]{background:var(--signal);border-color:var(--signal);color:var(--signal-ink)}
@media (hover:hover){.tag:hover{border-color:var(--signal);color:var(--signal)}}
.tag[aria-pressed="true"]:hover{color:var(--signal-ink)}
.section--deep .tag,.section--pitch .tag{border-color:rgba(185,216,200,.34);color:var(--pitch-200)}
.section--deep .tag[aria-pressed="true"],.section--pitch .tag[aria-pressed="true"]{color:var(--signal-ink)}

/* 10. 卡片 ----------------------------------------------- */
.panel{
  padding:24px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--white);box-shadow:0 1px 0 rgba(16,20,24,.03);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.panel--paper{background:var(--paper)}
.panel--deep{background:var(--ink-800);border-color:rgba(185,216,200,.2);color:var(--white);box-shadow:none}
.panel--deep p,.panel--deep .lead{color:rgba(244,241,236,.8)}
@media (hover:hover){
  .panel--link:hover{border-color:var(--signal);transform:translateY(-2px);box-shadow:0 14px 28px -22px rgba(16,20,24,.7)}
}

/* 11. 图片容器（页面阶段放图用） ------------------------- */
.media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:4/3;
  border:1px solid var(--line);border-radius:var(--radius);
  background-color:var(--ink-800);
  background-image:repeating-linear-gradient(115deg,rgba(185,216,200,.07) 0 1px,transparent 1px 16px);
}
.media>img,.media>picture>img{width:100%;height:100%;object-fit:cover;object-position:center}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--flush{border-color:transparent}
.media__tag{
  position:absolute;left:14px;bottom:14px;z-index:1;
  padding:6px 10px;background:var(--ink-950);color:var(--white);
  font-size:11px;font-weight:700;letter-spacing:.14em;
}

/* 12. 面包屑 --------------------------------------------- */
.breadcrumb{font-size:12px;letter-spacing:.08em;color:var(--gray-500)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__list li{display:flex;align-items:center;gap:8px}
.breadcrumb__list li+li::before{content:"/";color:var(--line)}
.breadcrumb a{transition:color var(--dur) var(--ease)}
@media (hover:hover){.breadcrumb a:hover{color:var(--signal)}}
.breadcrumb [aria-current="page"]{color:var(--ink-900);font-weight:700}
.section--deep .breadcrumb,.section--pitch .breadcrumb{color:rgba(185,216,200,.7)}
.section--deep .breadcrumb [aria-current="page"],.section--pitch .breadcrumb [aria-current="page"]{color:var(--white)}

/* 13. 文字链 --------------------------------------------- */
.link-arrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:15px;font-weight:700;color:var(--pitch-600);
  transition:color var(--dur) var(--ease);
}
.link-arrow::after{content:"";width:16px;height:1px;background:currentColor;transition:width var(--dur) var(--ease)}
@media (hover:hover){
  .link-arrow:hover{color:var(--signal)}
  .link-arrow:hover::after{width:26px}
}
.section--deep .link-arrow,.section--pitch .link-arrow{color:var(--pitch-200)}

/* 14. 筛选状态 ------------------------------------------- */
[data-filter-item][hidden]{display:none !important}
.filter-empty{
  display:none;padding:22px;border:1px dashed var(--line);
  font-size:14px;color:var(--gray-500);text-align:center;
}
[data-empty="true"] .filter-empty{display:block}

/* 15. 滚动进度 ------------------------------------------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:4px;z-index:95;
  background:rgba(185,216,200,.1);pointer-events:none;
}
.scroll-progress>span{display:block;height:100%;width:0;background:var(--signal)}

/* 16. 跳转链接 ------------------------------------------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 16px;border-radius:var(--radius);
  background:var(--signal);color:var(--signal-ink);
  font-size:13px;font-weight:700;letter-spacing:.06em;
  transform:translateY(-220%);
  transition:transform .16s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);outline:2px solid var(--white);outline-offset:2px}

/* 17. 页头 ----------------------------------------------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink-950);color:var(--white);
  border-bottom:1px solid rgba(185,216,200,.14);
}
.header-tail{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:var(--bar-h);padding:10px 18px;
}
.brand{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand-mark{
  display:flex;align-items:center;gap:9px;
  font-size:19px;font-weight:800;line-height:1.2;letter-spacing:.02em;color:var(--white);
}
.brand-mark::before{content:"";width:9px;height:9px;flex:none;background:var(--signal)}
.brand-line{
  font-size:11px;line-height:1.5;letter-spacing:.14em;
  color:rgba(185,216,200,.72);white-space:nowrap;
}
.header-tools{display:flex;align-items:center;gap:10px;flex:none}
.session-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 10px;border:1px solid rgba(185,216,200,.26);border-radius:1px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.06em;
  color:var(--pitch-200);white-space:nowrap;
}
.session-dot{width:6px;height:6px;flex:none;background:var(--pitch-600);box-shadow:0 0 0 3px rgba(30,111,76,.28)}

/* 18. 抽屉按钮 ------------------------------------------- */
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;
  border:1px solid rgba(185,216,200,.34);border-radius:var(--radius);
  transition:border-color var(--dur) var(--ease);
}
.nav-toggle-bar{
  display:block;width:100%;height:2px;background:var(--pitch-200);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--signal)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 19. 轨道导航 ------------------------------------------- */
.site-nav{
  position:fixed;top:var(--bar-h);right:0;bottom:0;left:0;z-index:79;
  display:flex;flex-direction:column;
  padding:22px 20px 40px;
  overflow-y:auto;overscroll-behavior:contain;
  background:var(--ink-950);
  border-top:1px solid rgba(185,216,200,.14);
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.site-header[data-open] .site-nav{opacity:1;visibility:visible;transform:none}

.nav-overline{
  margin-bottom:14px;
  font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--pitch-600);
}
.nav-track{position:relative;display:flex;flex-direction:column}
.nav-track::before{
  content:"";position:absolute;left:5px;top:16px;bottom:16px;width:1px;
  background:rgba(185,216,200,.22);
}
.nav-stop{position:relative}
.nav-link{
  display:flex;align-items:center;gap:13px;
  padding:12px 8px 12px 0;
  font-size:15px;font-weight:600;
  color:rgba(185,216,200,.86);
  border-bottom:1px solid rgba(185,216,200,.09);
  transition:color var(--dur) var(--ease);
}
.nav-tick{
  position:relative;z-index:1;flex:none;
  width:11px;height:11px;border:1px solid var(--pitch-600);border-radius:50%;
  background:var(--ink-950);
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-index{font-size:11px;letter-spacing:.06em;color:rgba(185,216,200,.45)}
.nav-label{position:relative}
.nav-label::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link[aria-current="page"]{color:var(--white)}
.nav-link[aria-current="page"] .nav-tick{
  background:var(--signal);border-color:var(--signal);box-shadow:0 0 0 4px rgba(255,107,44,.2);
}
.nav-link[aria-current="page"] .nav-index{color:var(--signal)}
@media (hover:hover){
  .nav-link:hover{color:var(--white)}
  .nav-link:hover .nav-tick{border-color:var(--pitch-200)}
  .nav-link:hover .nav-label::after{transform:scaleX(1)}
}

.nav-back{
  display:inline-flex;align-items:center;gap:9px;align-self:flex-start;
  margin-top:24px;padding:10px 14px;
  border:1px solid rgba(185,216,200,.3);border-radius:var(--radius);
  font-size:11.5px;font-weight:700;letter-spacing:.12em;color:var(--pitch-200);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-back::before{content:"";width:6px;height:6px;flex:none;background:var(--signal)}
@media (hover:hover){.nav-back:hover{border-color:var(--signal);color:var(--signal)}}
.nav-foot{
  margin-top:20px;max-width:30ch;
  font-size:11.5px;line-height:1.7;letter-spacing:.04em;
  color:rgba(185,216,200,.42);
}

/* 20. 页脚 ----------------------------------------------- */
.site-footer{position:relative;background:var(--ink-950);color:var(--white)}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:14px;
  background:var(--pitch-900);
  clip-path:polygon(0 0,100% 0,100% 24%,0 100%);
  pointer-events:none;
}
.footer-inner{
  max-width:var(--maxw);margin-inline:auto;
  padding:66px 22px 48px;
  display:grid;gap:40px;grid-template-columns:1fr;
}
.footer-brand{min-width:0}
.footer-wordmark{font-size:26px;font-weight:800;line-height:1.2;letter-spacing:.02em}
.footer-claim{margin-top:10px;font-size:15px;letter-spacing:.06em;color:var(--pitch-200)}
.footer-note{margin-top:14px;max-width:34ch;font-size:13px;line-height:1.8;color:rgba(185,216,200,.55)}
.footer-label{
  margin-bottom:16px;
  font-size:11px;font-weight:700;letter-spacing:.2em;
  color:var(--pitch-600);
}
.footer-links{display:grid;grid-template-columns:1fr}
.footer-links a{
  display:block;padding:9px 0;
  font-size:14px;color:rgba(244,241,236,.82);
  border-bottom:1px solid rgba(185,216,200,.1);
  transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
@media (hover:hover){.footer-links a:hover{color:var(--signal);padding-left:6px}}

.contact-list{display:grid;gap:12px}
.contact-list li{
  display:grid;grid-template-columns:48px minmax(0,1fr);gap:12px;align-items:baseline;
  padding-bottom:11px;border-bottom:1px solid rgba(185,216,200,.1);
}
.contact-key{font-size:11px;letter-spacing:.14em;color:rgba(185,216,200,.5)}
.contact-value{font-size:13.5px;line-height:1.6;color:var(--white);word-break:break-word}

.footer-legal{
  max-width:var(--maxw);margin-inline:auto;
  padding:20px 22px 34px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 24px;
  border-top:1px solid rgba(185,216,200,.14);
}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:12.5px}
.legal-links a{color:rgba(185,216,200,.68);transition:color var(--dur) var(--ease)}
@media (hover:hover){.legal-links a:hover{color:var(--signal)}}
.legal-icp{
  max-width:none;font-size:12px;letter-spacing:.04em;
  color:rgba(185,216,200,.42);font-variant-numeric:tabular-nums;
}

/* 21. 断点 ----------------------------------------------- */
@media (max-width:639px){
  .brand-line{display:none}
}
@media (max-width:519px){
  .session-badge{display:none}
  .header-tools .btn{padding:10px 14px;font-size:13px}
  .footer-inner{padding-top:56px}
}
@media (min-width:768px){
  .footer-inner{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (min-width:1024px){
  body{padding-left:var(--rail)}
  .section{padding-block:88px}
  .wrap{padding-inline:44px}

  .site-header{
    position:fixed;top:0;left:0;bottom:0;width:var(--rail);
    display:flex;flex-direction:column;overflow:hidden;
    border-bottom:0;border-right:1px solid rgba(185,216,200,.16);
  }
  .header-tail{
    flex-direction:column;align-items:flex-start;gap:18px;
    min-height:0;padding:30px 26px 22px;
    border-bottom:1px solid rgba(185,216,200,.12);
  }
  .header-tools{flex-direction:column;align-items:stretch;gap:12px;width:100%}
  .session-badge{align-self:flex-start}
  .nav-toggle{display:none}

  .site-nav{
    position:static;flex:1 1 auto;min-height:0;
    padding:24px 26px 28px;
    opacity:1;visibility:visible;transform:none;
    background:transparent;border-top:0;transition:none;
  }
  .scroll-progress{display:none}

  .footer-inner{grid-template-columns:1.5fr 1fr 1.3fr;gap:56px;padding-inline:44px}
  .footer-brand{grid-column:auto}
  .footer-legal{padding-inline:44px}
}

/* 22. 减少动效 ------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover,.panel--link:hover{transform:none !important}
  .scroll-progress>span{transition:none !important}
}