/* ========== 1. 令牌 ========== */
:root{
  --ink-900:#0B0E14;
  --ink-800:#11151F;
  --ink-700:#1A2030;
  --volt:#1E6BFF;
  --orange:#FF5A1F;
  --orange-soft:#FF7A47;
  --lime:#B7FF3C;
  --ice:#F4F6FA;
  --slate:#9AA4B8;
  --line:#2A3346;
  --wine:#7A1B2E;
  --indigo:#2B1B5A;
  --font-display:"Barlow Condensed","Oswald",Impact,"Noto Sans SC","PingFang SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shell:1320px;
  --gutter:clamp(18px,4vw,40px);
  --header-h:108px;
  --cut:14px;
  --ease:cubic-bezier(.22,.68,.24,1);
  --shadow-1:0 18px 40px rgba(0,0,0,.45);
}

/* ========== 2. Reset / 中文排版 ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion: no-preference){html{scroll-behavior:smooth}}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
body{
  min-height:100%;
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  color:var(--ice);
  background-color:var(--ink-900);
  background-image:
    linear-gradient(rgba(154,164,184,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(154,164,184,.05) 1px,transparent 1px);
  background-size:76px 76px,76px 76px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:var(--volt);text-decoration:none}
a:hover{color:var(--orange)}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.04;letter-spacing:-.02em;color:var(--ice)}
h1{font-size:clamp(34px,5.4vw,64px)}
h2{font-size:clamp(26px,3.6vw,44px)}
h3{font-size:clamp(20px,2.2vw,28px)}
h4{font-size:18px;font-weight:700;letter-spacing:0}
strong,b{font-weight:700;color:var(--ice)}
::selection{background:var(--orange);color:var(--ink-900)}
[hidden]{display:none !important}

/* ========== 3. 可访问性 ========== */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--volt);outline-offset:3px}
.cta:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,.tab:focus-visible,.chip:focus-visible,.footer-link:focus-visible,.brand:focus-visible,.to-top:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.skip-link{
  position:fixed;top:12px;left:12px;z-index:220;
  transform:translateY(-180%);
  padding:11px 20px;
  background:var(--lime);color:var(--ink-900);
  font-family:var(--font-body);font-size:15px;font-weight:700;
  text-decoration:none;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:none;color:var(--ink-900)}

/* ========== 4. 布局基础 ========== */
.wrap{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.main-content{display:block;padding-top:var(--header-h);min-height:60vh}
.main-content--overlay{padding-top:0}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.mono{font-family:var(--font-mono);letter-spacing:.06em}
.mono--lime{color:var(--lime);font-weight:700}
.dot-sep{color:var(--line)}
.pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(183,255,60,.16);flex:none;display:inline-block}

/* ========== 5. 页头 / 比分条导航 ========== */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:120;
  color:var(--ice);
  background:transparent;
  transition:background-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,14,20,.86),rgba(11,14,20,0));
  transition:opacity .22s var(--ease);
}
.site-header.is-compact{background:var(--ink-900);box-shadow:0 1px 0 var(--line),var(--shadow-1)}
.site-header.is-compact::before{opacity:0}
.site-header[data-open]{background:var(--ink-900)}
.header-inner{position:relative;z-index:1;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}

.progress-rail{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(42,51,70,.55);overflow:hidden}
.progress-bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--volt) 0%,var(--orange) 62%,var(--lime) 100%);transition:width .08s linear}

.score-strip{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:36px;overflow:hidden;
  border-bottom:1px solid rgba(42,51,70,.6);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--slate);
  transition:height .22s var(--ease),opacity .18s var(--ease),border-color .22s var(--ease);
}
.site-header.is-compact .score-strip{height:0;opacity:0;border-color:transparent}
.score-strip__live{display:inline-flex;align-items:center;gap:9px;min-width:0}
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(183,255,60,.16);flex:none}
.strip-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.score-strip__right{display:inline-flex;align-items:center;gap:14px;flex:none}
.strip-link{color:var(--ice);font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;padding-bottom:2px;border-bottom:1px solid rgba(244,246,250,.28)}
.strip-link:hover{color:var(--orange);border-color:var(--orange)}
.version-badge{
  padding:3px 9px;background:var(--lime);color:var(--ink-900);
  font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.12em;
  clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
}
.strip-mono{color:var(--slate);letter-spacing:.16em}

.nav-rail{display:flex;align-items:center;gap:clamp(10px,2vw,22px);height:72px;transition:height .22s var(--ease)}
.site-header.is-compact .nav-rail{height:60px}

.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--ice);flex:none}
.brand:hover{color:var(--ice)}
.brand-mark{
  display:grid;place-items:center;width:36px;height:36px;flex:none;
  background:var(--orange);color:var(--ink-900);
  font-family:var(--font-display);font-size:16px;font-weight:900;letter-spacing:.02em;line-height:1;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.brand-text{display:flex;flex-direction:column;justify-content:center}
.brand-name{font-family:var(--font-display);font-size:21px;font-weight:800;letter-spacing:-.01em;line-height:1}
.brand-note{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--slate);margin-top:4px;line-height:1}

.site-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;
  font-size:15px;font-weight:500;letter-spacing:.01em;color:rgba(244,246,250,.84);text-decoration:none;
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:9px;height:2px;
  background:var(--volt);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ice)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{
  color:var(--ink-900);background:var(--orange);font-weight:700;
  padding-left:26px;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;left:12px;top:50%;margin-top:-3px;
  width:6px;height:6px;border-radius:50%;background:var(--ink-900);
}
.nav-link[aria-current="page"]::after{display:none}
.nav-cta{margin-left:14px}

.nav-toggle{
  display:none;margin-left:auto;flex:none;
  width:46px;height:46px;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  background:rgba(26,32,48,.9);border:1px solid var(--line);color:var(--ice);cursor:pointer;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--volt);background:rgba(30,107,255,.2)}
.nav-toggle__bar{width:20px;height:2px;background:var(--ice);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.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)}

/* ========== 6. 页脚 ========== */
.site-footer{position:relative;background:var(--ink-900);color:var(--slate);border-top:1px solid var(--line);overflow:hidden}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;
  background:linear-gradient(90deg,var(--orange) 0 26%,var(--volt) 26% 62%,var(--lime) 62% 74%,var(--line) 74% 100%);
}
.footer-inner{max-width:var(--shell);margin-inline:auto;padding:clamp(40px,6vw,72px) var(--gutter) 0}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1.25fr) repeat(3,minmax(0,.78fr));
  gap:clamp(24px,4vw,52px);padding-bottom:clamp(28px,4vw,48px);
}
.footer-brand__line{font-family:var(--font-display);font-weight:800;font-size:clamp(22px,2.4vw,28px);line-height:1.1;letter-spacing:-.01em;color:var(--ice)}
.footer-tagline{margin-top:10px;font-family:var(--font-display);font-weight:700;font-size:clamp(18px,2vw,22px);color:var(--lime)}
.footer-contact{margin-top:22px;padding-left:14px;border-left:2px solid var(--orange);font-size:14px;line-height:1.85;font-style:normal}
.footer-contact__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate);margin-bottom:8px}
.footer-contact__row{color:rgba(244,246,250,.88);word-break:break-word;max-width:34ch}
.footer-cta{margin-top:22px}
.footer-col{display:flex;flex-direction:column;align-items:flex-start;gap:2px}
.footer-col__title{
  width:100%;margin-bottom:10px;padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ice);
}
.footer-link{
  display:inline-flex;align-items:center;gap:9px;min-height:38px;
  color:var(--slate);font-size:15px;text-decoration:none;
  transition:color .18s var(--ease);
}
.footer-link::before{content:"";width:10px;height:2px;background:var(--line);transition:background-color .18s var(--ease),width .18s var(--ease)}
.footer-link:hover{color:var(--ice)}
.footer-link:hover::before{background:var(--orange);width:16px}
.footer-link--inline{display:inline;min-height:0;color:var(--ice);font-size:11px;letter-spacing:.08em}
.footer-link--inline::before{display:none}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  padding-block:20px;border-top:1px solid var(--line);
}
.footer-legal{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;line-height:2;color:var(--slate)}
.footer-icp{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--slate)}
.footer-data{margin-top:10px;border-top:1px solid var(--line);background:var(--ink-800)}
.footer-data__inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;padding-block:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--slate);
}

/* ========== 7. 通用组件 ========== */
.cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 20px;
  font-family:var(--font-body);font-size:15px;font-weight:700;letter-spacing:.01em;text-decoration:none;cursor:pointer;
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.cta--primary{background:var(--orange);color:var(--ink-900)}
.cta--primary:hover{background:var(--orange-soft);color:var(--ink-900);transform:translateY(-2px)}
.cta--ghost{background:rgba(26,32,48,.65);color:var(--ice);border:1px solid var(--line)}
.cta--ghost:hover{border-color:var(--volt);background:rgba(30,107,255,.16);color:var(--ice)}
.cta--lime{background:var(--lime);color:var(--ink-900)}
.cta--lime:hover{background:#C8FF6B;color:var(--ink-900);transform:translateY(-2px)}

.breadcrumbs{padding-block:18px}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--slate)}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li+li::before{content:"/";color:var(--line)}
.breadcrumbs a{color:var(--slate);text-decoration:none}
.breadcrumbs a:hover{color:var(--lime)}
.breadcrumbs [aria-current="page"]{color:var(--ice)}

.section-head{display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 18px;align-items:start;margin-bottom:clamp(20px,3vw,36px)}
.section-head__num,.num{
  font-family:var(--font-mono);font-size:clamp(28px,3.4vw,44px);line-height:1;letter-spacing:.04em;
  color:var(--volt);transition:color .25s var(--ease);
}
.section-head__title{font-family:var(--font-display);font-weight:800;font-size:clamp(22px,2.6vw,32px);letter-spacing:-.01em;color:var(--ice)}
.section-head__desc{grid-column:2;color:var(--slate);font-size:15px;max-width:52ch}
.num.is-lit,.section-head__num.is-lit{color:var(--lime)}

.panel{position:relative;background:var(--ink-800);border:1px solid var(--line);padding:clamp(18px,2.4vw,28px)}
.panel--cut{clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut))}
.panel--blue{background:rgba(30,107,255,.16);border-color:rgba(30,107,255,.5)}
.panel--wine{background:var(--wine);border-color:rgba(244,246,250,.18)}
.panel--indigo{background:var(--indigo);border-color:rgba(244,246,250,.16)}

.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.chip{
  display:inline-flex;align-items:center;min-height:38px;padding:0 15px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--slate);background:rgba(26,32,48,.75);border:1px solid var(--line);cursor:pointer;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.chip:hover{color:var(--ice);border-color:var(--volt)}
.chip[aria-pressed="true"],.chip.is-active{background:var(--orange);border-color:var(--orange);color:var(--ink-900);font-weight:700}

.tabs__list{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:14px;margin-bottom:22px;border-bottom:1px solid var(--line)}
.tab{
  min-height:44px;padding:0 18px;
  font-family:var(--font-body);font-size:15px;font-weight:700;color:var(--slate);
  background:transparent;border:1px solid transparent;cursor:pointer;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.tab:hover{color:var(--ice);border-color:var(--line)}
.tab[aria-selected="true"]{
  background:var(--lime);border-color:var(--lime);color:var(--ink-900);
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
}
.tabs__panel{color:var(--ice)}

.media{position:relative;overflow:hidden;background:var(--ink-700);border:1px solid var(--line);isolation:isolate}
.media--cut{clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,22px 100%,0 calc(100% - 22px))}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--3x4{aspect-ratio:3/4}
.media--1x1{aspect-ratio:1/1}
.media img{width:100%;height:100%;object-fit:cover}
.media--placeholder{background-image:repeating-linear-gradient(135deg,rgba(154,164,184,.1) 0 10px,transparent 10px 22px)}
.media__scrim{position:absolute;inset:auto 0 0 0;height:58%;background:linear-gradient(180deg,rgba(11,14,20,0),rgba(11,14,20,.88));pointer-events:none}
.media__tag{
  position:absolute;left:0;bottom:0;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;background:var(--ink-900);color:var(--lime);
  border-top:1px solid var(--line);border-right:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
}

.to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:110;
  width:46px;height:46px;display:inline-grid;place-items:center;
  background:var(--ink-700);color:var(--ice);border:1px solid var(--line);cursor:pointer;
  font-family:var(--font-mono);font-size:16px;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),background-color .18s var(--ease),visibility .2s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--volt);border-color:var(--volt)}

/* ========== 8. 动效协议 ========== */
.js [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.js [data-reveal].is-revealed{opacity:1;transform:none}

/* ========== 9. 响应式 ========== */
@media (max-width:1100px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:980px){
  :root{--header-h:64px}
  .score-strip{display:none}
  .nav-rail{height:64px}
  .site-header.is-compact .nav-rail{height:64px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;top:var(--header-h);left:0;right:0;margin:0;
    display:grid;gap:0;padding:10px var(--gutter) 22px;
    background:var(--ink-900);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-1);
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  }
  .site-header[data-open] .site-nav{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .nav-link{justify-content:space-between;min-height:54px;padding:0 14px;font-size:16px;border-bottom:1px solid rgba(42,51,70,.7)}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{padding-left:30px;border-bottom-color:var(--orange)}
  .nav-link[aria-current="page"]::before{background:var(--ink-900)}
  .nav-cta{margin:18px 0 0;width:100%}
  body.nav-open{overflow:hidden}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-inner{padding-bottom:0}
}
@media (max-width:860px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .section-head__desc{grid-column:1 / -1}
}
@media (max-width:620px){
  body{font-size:16px}
  .brand-name{font-size:19px}
  .brand-note{font-size:9px}
  .brand-mark{width:32px;height:32px;font-size:14px}
  .footer-top{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-contact__row{max-width:none}
  .footer-data__inner{font-size:10px;letter-spacing:.06em}
}

/* ========== 10. 减弱动效 ========== */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .js [data-reveal]{opacity:1;transform:none}
  .to-top{transform:none}
  .media img{transition:none}
}