/* =========================================================
   33体育主站 — 共享样式 / assets/site.css
   视觉概念：竞技场数据指挥中心
   堆叠面板 · 坐标索引 · 精密网格 · 深墨绿夜间看台
   目录
   01 变量与重置
   02 中文排版与基础元素
   03 布局容器与网格
   04 通用组件
   05 站点头部
   06 站点页脚
   07 焦点、动效与响应式
   ========================================================= */

/* ---------- 01 变量与重置 ---------- */
:root{
  --ink-900:#071E18;
  --ink-800:#0D2B23;
  --ink-700:#123B33;
  --cyan:#22F5C8;
  --orange:#FF8A3D;
  --grey:#8FA3A0;
  --bone:#F4F1E8;
  --line:#0A0A0A;
  --link:#5EEAD4;
  --red:#FF5C5C;

  --hairline:rgba(143,163,160,.28);
  --hairline-soft:rgba(143,163,160,.14);
  --grid-line:rgba(143,163,160,.06);

  --font-head:"Barlow Condensed","Oswald","Arial Narrow","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Inter","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono","SFMono-Regular",Consolas,"Noto Sans SC",monospace;

  --shell:1320px;
  --gutter:clamp(16px,4vw,48px);
  --radius:0;
}

*,
*::before,
*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:132px;
}

body{
  margin:0;
  background-color:var(--ink-900);
  background-image:
    linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:72px 72px;
  background-position:center top;
  color:var(--bone);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

nav ul,
nav ol,
.breadcrumb,
.toc-list{
  list-style:none;
  margin:0;
  padding:0;
}

img,
svg,
video{max-width:100%;}

img{height:auto;}

hr{
  border:0;
  border-top:1px solid var(--hairline);
  margin:clamp(20px,3vw,36px) 0;
}

/* ---------- 02 中文排版与基础元素 ---------- */
h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  font-family:var(--font-head);
  font-weight:800;
  letter-spacing:.01em;
  line-height:1.14;
  color:var(--bone);
}

h1{font-size:clamp(34px,5.2vw,64px);font-weight:900;letter-spacing:-.005em;}
h2{font-size:clamp(26px,3.4vw,36px);}
h3{font-size:clamp(19px,2.2vw,24px);}
h4{font-size:18px;}

p{margin:0 0 1em;}

a{color:var(--link);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--cyan);}

strong,b{font-weight:700;color:var(--bone);}

code,kbd,samp{
  font-family:var(--font-mono);
  font-size:.9em;
  background:var(--ink-700);
  border:1px solid var(--hairline);
  padding:1px 6px;
}

blockquote{
  margin:0 0 1.2em;
  padding:14px 0 14px 20px;
  border-left:2px solid var(--cyan);
  color:rgba(244,241,232,.82);
}

/* ---------- 03 布局容器与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{padding-block:clamp(36px,6vw,80px);}
.section--tight{padding-block:clamp(22px,3.6vw,44px);}

.grid{
  display:grid;
  gap:clamp(16px,2.2vw,28px);
}
.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--sidebar{
  grid-template-columns:minmax(220px,300px) minmax(0,1fr);
  gap:clamp(20px,3vw,40px);
}

@media (max-width:1024px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:900px){
  .grid--2,
  .grid--3,
  .grid--sidebar{grid-template-columns:1fr;}
}
@media (max-width:560px){
  .grid--4{grid-template-columns:1fr;}
}

/* ---------- 04 通用组件 ---------- */
.panel{
  position:relative;
  background:var(--ink-800);
  border:1px solid var(--hairline);
  padding:clamp(18px,2.6vw,30px);
}
.panel--flush{padding:0;}
.panel--index{background:var(--ink-700);}
.panel--edge{border-left:3px solid var(--cyan);}
.panel--alert{border-left:3px solid var(--orange);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 22px;
  font-family:var(--font-mono);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.14em;
  line-height:1;
  color:var(--cyan);
  background:transparent;
  border:1px solid var(--cyan);
  border-radius:var(--radius);
  text-decoration:none;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{background:var(--cyan);color:var(--ink-900);transform:translateY(-1px);}

.btn--solid{background:var(--cyan);color:var(--ink-900);}
.btn--solid:hover{background:var(--bone);border-color:var(--bone);color:var(--ink-900);}

.btn--alert{border-color:var(--orange);color:var(--orange);}
.btn--alert:hover{background:var(--orange);border-color:var(--orange);color:var(--ink-900);}

.btn--ghost{border-color:var(--hairline);color:var(--bone);}
.btn--ghost:hover{background:var(--ink-700);border-color:var(--bone);color:var(--bone);}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 clamp(18px,3vw,28px);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--grey);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{content:"/";color:rgba(143,163,160,.5);}
.breadcrumb a{color:var(--grey);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb [aria-current="page"]{color:var(--bone);}

.prose{
  max-width:72ch;
  font-size:17px;
  line-height:1.85;
  color:rgba(244,241,232,.88);
}
.prose h2{margin-top:1.6em;font-size:clamp(24px,3vw,32px);}
.prose h3{margin-top:1.4em;}
.prose ul,
.prose ol{margin:0 0 1.2em;padding-left:1.3em;list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.45em;}
.prose > *:last-child{margin-bottom:0;}

.media{
  position:relative;
  display:block;
  margin:0;
  overflow:hidden;
  background:var(--ink-800);
  border:1px solid var(--hairline);
  aspect-ratio:16 / 9;
}
.media > img,
.media > picture > img,
.media > svg,
.media > video{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--square{aspect-ratio:1 / 1;}
.media--portrait{aspect-ratio:3 / 4;}
.media--wide{aspect-ratio:21 / 9;}
.media__cap{
  display:block;
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--grey);
}

.coord{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--grey);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  background:var(--orange);
}

.stat{display:flex;flex-direction:column;gap:6px;}
.stat__value{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(30px,4.6vw,54px);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--cyan);
}
.stat__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--grey);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--grey);
}
.tag--live{border-color:var(--cyan);color:var(--cyan);}
.tag--alert{border-color:var(--red);color:var(--red);}
.tag--hot{border-color:var(--orange);color:var(--orange);}

.visually-hidden{
  position:absolute;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ---------- 05 站点头部 ---------- */
.skip-link{
  position:absolute;
  left:12px;
  top:-80px;
  z-index:200;
  padding:12px 18px;
  background:var(--cyan);
  color:var(--ink-900);
  font-family:var(--font-mono);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.12em;
  text-decoration:none;
  transition:top .16s ease;
}
.skip-link:focus{top:10px;color:var(--ink-900);}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink-900);
  border-bottom:1px solid var(--hairline);
}

/* 上层：品牌铭牌 + 辅助入口 */
.header-utility{
  background:var(--ink-800);
  border-bottom:1px solid var(--hairline);
}
.header-utility__inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  min-height:48px;
}

.brand-lockup{
  display:flex;
  align-items:center;
  gap:11px;
  min-width:0;
  text-decoration:none;
  color:var(--bone);
}
.brand-lockup:hover{color:var(--bone);}
.brand-lockup__mark{
  font-family:var(--font-head);
  font-size:18px;
  font-weight:900;
  line-height:1;
  letter-spacing:.02em;
  color:var(--ink-900);
  background:var(--cyan);
  padding:6px 9px 7px;
}
.brand-lockup__name{
  font-family:var(--font-head);
  font-size:17px;
  font-weight:800;
  letter-spacing:.14em;
  white-space:nowrap;
}
.brand-lockup__tagline{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--grey);
  white-space:nowrap;
}

.utility-nav{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,22px);
  margin-left:auto;
}
.utility-link{
  padding:6px 2px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--grey);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.utility-link:hover{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
}

.header-cta{
  display:inline-flex;
  align-items:center;
  padding:9px 16px;
  background:var(--orange);
  border:1px solid var(--orange);
  border-radius:var(--radius);
  color:var(--ink-900);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  white-space:nowrap;
  text-decoration:none;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.header-cta:hover{
  background:#FFA35F;
  border-color:#FFA35F;
  color:var(--ink-900);
  transform:translateY(-1px);
}

/* 下层：栏目索引 */
.header-main{background:var(--ink-900);}
.header-main__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:62px;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  background:transparent;
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  color:var(--bone);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  gap:3px;
  width:16px;
}
.nav-toggle__bars span{
  display:block;
  height:1.5px;
  background:var(--cyan);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(4.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-4.5px) rotate(-45deg);}

.site-nav{margin:0;}
.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:stretch;
  gap:0;
}
.site-nav__item{display:flex;}
.site-nav__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:9px;
  padding:20px 18px;
  color:var(--bone);
  font-family:var(--font-head);
  font-size:16px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  transition:color .18s ease,background .18s ease;
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:18px;
  right:18px;
  bottom:11px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease,background .2s ease;
}
.site-nav__link:hover{color:var(--cyan);}
.site-nav__link:hover::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{color:var(--cyan);}
.site-nav__link[aria-current="page"]::after{
  background:var(--orange);
  transform:scaleX(1);
}
.site-nav__index{
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:500;
  letter-spacing:.1em;
  color:var(--grey);
  transition:color .18s ease;
}
.site-nav__link:hover .site-nav__index,
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--orange);}
.site-nav__label{white-space:nowrap;}

.header-coord{
  margin:0 0 0 auto;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--grey);
  white-space:nowrap;
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--orange) 100%);
  transform:scaleX(0);
  transform-origin:left center;
}

@media (max-width:1100px){
  .brand-lockup__tagline{display:none;}
  .site-nav__link{padding:18px 12px;font-size:15px;}
  .site-nav__link::after{left:12px;right:12px;}
  .header-coord{display:none;}
}

@media (max-width:900px){
  .header-utility__inner{
    flex-wrap:wrap;
    justify-content:space-between;
    padding-block:8px;
    min-height:0;
  }
  .utility-nav{margin-left:0;}
  .header-main__inner{justify-content:flex-start;min-height:56px;}
  .nav-toggle{display:inline-flex;}

  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    background:var(--ink-800);
    border-top:1px solid var(--hairline);
    border-bottom:1px solid var(--hairline);
    max-height:calc(100vh - 120px);
    overflow-y:auto;
  }
  .site-nav[data-open="true"]{display:block;}

  .site-nav__list{flex-direction:column;}
  .site-nav__item + .site-nav__item{border-top:1px solid var(--hairline-soft);}
  .site-nav__link{
    padding:16px var(--gutter);
    font-size:18px;
  }
  .site-nav__link::after{display:none;}
  .site-nav__link[aria-current="page"]{
    background:var(--ink-700);
    box-shadow:inset 3px 0 0 var(--orange);
  }
}

@media (max-width:520px){
  .brand-lockup__name{font-size:15px;letter-spacing:.1em;}
  .utility-link{font-size:11px;}
  .header-cta{padding:8px 12px;font-size:11px;}
}

/* ---------- 06 站点页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  border-top:1px solid var(--hairline);
  color:var(--grey);
}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(22px,3vw,54px);
  padding-block:clamp(40px,6vw,72px) clamp(26px,4vw,46px);
}

.footer-brand__mark{
  display:inline-block;
  margin:0 0 16px;
  padding-bottom:7px;
  border-bottom:3px solid var(--cyan);
  font-family:var(--font-head);
  font-size:clamp(22px,2.6vw,30px);
  font-weight:900;
  line-height:1.1;
  letter-spacing:.06em;
  color:var(--bone);
}
.footer-brand__blurb{
  margin:0 0 16px;
  max-width:44ch;
  font-size:14.5px;
  line-height:1.85;
  color:var(--grey);
}
.footer-brand__coord{
  margin:0;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:rgba(143,163,160,.62);
}

.footer-col__title{
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-col__list{counter-reset:flink;}
.footer-col__list li + li{margin-top:0;}
.footer-col__link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:9px 0;
  border-bottom:1px solid var(--hairline-soft);
  color:var(--grey);
  font-size:15px;
  text-decoration:none;
  transition:color .18s ease,border-color .18s ease,padding-left .18s ease;
}
.footer-col__link::before{
  counter-increment:flink;
  content:"0" counter(flink);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  color:rgba(143,163,160,.6);
  transition:color .18s ease;
}
.footer-col__link:hover{
  color:var(--bone);
  border-bottom-color:var(--cyan);
  padding-left:4px;
}
.footer-col__link:hover::before{color:var(--orange);}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  gap:16px clamp(20px,3vw,36px);
  align-items:start;
  padding-block:clamp(20px,3vw,30px);
  border-top:1px solid var(--hairline);
}
.footer-contact__item{
  display:flex;
  flex-direction:column;
  gap:5px;
  margin:0;
}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--grey);
}
.footer-contact__value{
  font-size:14.5px;
  color:var(--bone);
  word-break:break-word;
}
.footer-contact__link{
  display:inline-flex;
  align-items:center;
  align-self:start;
  padding:10px 16px;
  border:1px solid var(--cyan);
  border-radius:var(--radius);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.footer-contact__link:hover{
  background:var(--cyan);
  color:var(--ink-900);
}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px clamp(18px,3vw,32px);
  padding-block:18px clamp(20px,3vw,28px);
  border-top:1px solid var(--hairline);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--grey);
}
.footer-base p{margin:0;}
.footer-base__icp{color:var(--grey);}
.footer-base__coord{
  margin-left:auto;
  color:rgba(143,163,160,.6);
}

@media (max-width:1000px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-base{
    flex-direction:column;
    align-items:flex-start;
  }
  .footer-base__coord{margin-left:0;}
}

/* ---------- 07 焦点、动效与响应式 ---------- */
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:0;
}
.site-nav__link:focus-visible,
.footer-col__link:focus-visible,
.brand-lockup:focus-visible,
.header-cta:focus-visible,
.utility-link:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:-2px;
}

[data-reveal]{
  transition:opacity .5s ease,transform .5s ease;
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}
html.has-js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
}
html.has-js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

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