/* =========================================================
   今年会体育赛 · 共享样式表 /assets/site.css
   01 reset  02 tokens  03 基础排版  04 布局  05 组件
   06 页头   07 页脚    08 媒体容器  09 响应式与无障碍
   ========================================================= */

/* ---------- 01 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,figure,blockquote,dl,dd,h1,h2,h3,h4,h5,p,ul,ol{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,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
::selection{background:var(--lime);color:var(--ink)}

/* ---------- 02 tokens ---------- */
:root{
  --ink:#061527;
  --panel:#0E2A45;
  --panel-deep:#0A1E33;
  --track:#14406B;
  --lime:#B6FF3B;
  --amber:#FF7A29;
  --cyan:#4FD8E0;
  --alert:#FF4D5E;
  --text:#E8EEF5;
  --muted:#93A7BC;
  --paper:#F4F7FA;
  --paper-ink:#0A2540;
  --paper-muted:#4E6A89;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --shell:1280px;
  --gutter:clamp(16px,4vw,40px);
  --header-top-h:44px;
  --header-nav-h:56px;
  --quickbar-h:54px;

  --cut:polygon(0 0,calc(100% - 20px) 0,100% 20px,100% 100%,20px 100%,0 calc(100% - 20px));
  --cut-sm:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  --ease:160ms cubic-bezier(.2,.6,.2,1);
}

/* ---------- 03 基础排版 ---------- */
body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-sans);font-weight:800;line-height:1.25;letter-spacing:.01em;color:var(--text)}
h1{font-size:clamp(28px,4.4vw,52px)}
h2{font-size:clamp(22px,2.8vw,32px)}
h3{font-size:clamp(18px,2vw,22px)}
h4{font-size:16px}
p{font-size:16px}
strong,b{font-weight:700;color:var(--text)}
a{transition:color var(--ease),border-color var(--ease),background-color var(--ease)}

.display{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(34px,6vw,64px);
  line-height:1.12;
  letter-spacing:-.01em;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.muted{color:var(--muted)}
.lede{font-size:17px;line-height:1.75;color:var(--text)}
.prose{font-size:16px;line-height:1.75;color:var(--text)}
.prose p{margin-bottom:14px}
.prose h2{margin:32px 0 12px}
.prose h3{margin:24px 0 10px}
.prose ul,.prose ol{margin:0 0 14px 0;display:grid;gap:8px}
.prose li{padding-left:18px;position:relative;color:var(--text)}
.prose li::before{content:"";position:absolute;left:0;top:.7em;width:8px;height:2px;background:var(--lime)}
.prose a{color:var(--lime);border-bottom:1px solid rgba(182,255,59,.4)}
.prose a:hover{border-bottom-color:var(--lime)}

/* ---------- 04 布局 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.page-body{padding-block:clamp(28px,4.5vw,64px)}
.section{padding-block:clamp(24px,3.6vw,52px)}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 18px;
  padding-bottom:12px;
  border-bottom:1px solid var(--track);
  margin-bottom:clamp(18px,2.6vw,30px);
}
.section__title{font-family:var(--font-sans);font-weight:800;font-size:clamp(20px,2.4vw,28px)}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--lime);
}
.rule{height:1px;background:var(--track);border:0;margin:0}
.rule--slant{
  height:2px;
  border:0;
  background:linear-gradient(90deg,var(--lime) 0 22%,var(--track) 22% 100%);
  transform:skewY(-1.4deg);
  transform-origin:left center;
}

.layout{display:grid;gap:20px}
.grid-12{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}

/* ---------- 05 组件 ---------- */
.panel{
  background:var(--panel);
  clip-path:var(--cut);
  padding:clamp(18px,2.6vw,28px);
}
.panel--deep{background:var(--panel-deep)}
.panel--paper{
  background:var(--paper);
  color:var(--paper-ink);
  clip-path:var(--cut);
}
.panel--paper p,.panel--paper li{color:var(--paper-muted)}
.panel--paper h2,.panel--paper h3,.panel--paper strong{color:var(--paper-ink)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  font-family:var(--font-sans);
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.04em;
  clip-path:var(--cut-sm);
  transition:background-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.btn--primary{background:var(--lime);color:#06121F}
.btn--primary:hover{background:#CBFF6E}
.btn--ghost{color:var(--text);box-shadow:inset 0 0 0 1px var(--track)}
.btn--ghost:hover{color:var(--lime);box-shadow:inset 0 0 0 1px var(--lime)}
.btn--sm{min-height:36px;padding:0 14px;font-size:13px}

.breadcrumb{padding-block:16px 0}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--muted);
}
.breadcrumb__list li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__list li:not(:last-child)::after{content:"／";color:var(--track)}
.breadcrumb__link{color:var(--muted)}
.breadcrumb__link:hover{color:var(--lime)}
.breadcrumb__current{color:var(--text)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--cyan);
  clip-path:var(--cut-sm);
  box-shadow:inset 0 0 0 1px rgba(79,216,224,.42);
}
.tag--live{color:var(--lime);box-shadow:inset 0 0 0 1px rgba(182,255,59,.46)}
.tag--fav{color:var(--amber);box-shadow:inset 0 0 0 1px rgba(255,122,41,.5)}

.stat{display:flex;flex-direction:column;gap:4px}
.stat__value{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(24px,3.4vw,36px);
  line-height:1.1;
  letter-spacing:.02em;
  color:var(--lime);
  font-variant-numeric:tabular-nums;
}
.stat__label{font-size:12.5px;color:var(--muted);letter-spacing:.04em}

.tabs{position:relative}
.tabs__list{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  border-bottom:1px solid var(--track);
  padding-bottom:10px;
}
.tabs__tab{
  padding:10px 18px;
  font-family:var(--font-sans);
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.03em;
  color:var(--muted);
  clip-path:var(--cut-sm);
  transition:color var(--ease),background-color var(--ease);
}
.tabs__tab:hover{color:var(--text);background:rgba(20,64,107,.55)}
.tabs__tab[aria-selected="true"]{background:var(--panel);color:var(--lime)}
.tabs__panel{padding-top:22px}
.tabs__panel[hidden]{display:none}

/* ---------- 06 页头 ---------- */
.skip-link{
  position:absolute;
  left:var(--gutter);
  top:-72px;
  z-index:95;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 16px;
  background:var(--lime);
  color:#06121F;
  font-size:14px;
  font-weight:700;
  transition:top var(--ease);
}
.skip-link:focus{top:6px}

.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:90;
  pointer-events:none;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime) 0%,var(--cyan) 68%,var(--amber) 100%);
}

.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,#07182B 0%,#061527 100%);
  border-bottom:1px solid var(--track);
  box-shadow:0 1px 0 rgba(182,255,59,.06);
}
.header-top{
  background:rgba(14,42,69,.55);
  border-bottom:1px solid rgba(20,64,107,.85);
}
.header-top__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:var(--header-top-h);
}
.brand-signature{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  font-size:13px;
  letter-spacing:.04em;
  white-space:nowrap;
}
.brand-signature__mark{
  flex:none;
  width:10px;
  height:10px;
  background:var(--lime);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
  box-shadow:0 0 0 1px rgba(182,255,59,.35);
}
.brand-signature__name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--text);
}
.brand-signature__line{
  padding-left:10px;
  border-left:1px solid var(--track);
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--muted);
}

.quickbar{display:flex;align-items:center;gap:2px}
.quickbar__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:var(--header-top-h);
  padding:0 12px;
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--muted);
  white-space:nowrap;
  transition:color var(--ease),background-color var(--ease);
}
.quickbar__link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:7px;
  height:1px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--ease);
}
.quickbar__link:hover,.quickbar__link:focus-visible{color:var(--lime)}
.quickbar__link:hover::after,.quickbar__link:focus-visible::after{transform:scaleX(1)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  height:32px;
  padding:0 10px;
  border:1px solid var(--track);
  clip-path:var(--cut-sm);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text);
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle__bars{
  display:block;
  width:16px;
  height:2px;
  background:currentColor;
  box-shadow:0 6px 0 currentColor,0 -6px 0 currentColor;
}
.nav-toggle__label{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em}

.primary-nav{background:var(--ink);border-top:1px solid rgba(20,64,107,.6)}
.primary-nav__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:var(--header-nav-h);
}
.nav-list{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav-list__item{display:block}
.nav-list__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:var(--header-nav-h);
  padding:0 16px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.03em;
  color:var(--text);
  transition:color var(--ease);
}
.nav-list__link::before{
  content:"";
  position:absolute;
  left:16px;
  right:16px;
  bottom:0;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--ease);
}
.nav-list__link:hover{color:var(--lime)}
.nav-list__link:hover::before{transform:scaleX(1)}
.nav-list__link[aria-current="page"]{color:var(--lime)}
.nav-list__link[aria-current="page"]::before{transform:scaleX(1)}
.nav-list__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  right:2px;
  top:50%;
  width:5px;
  height:5px;
  margin-top:-2.5px;
  background:var(--lime);
  transform:rotate(45deg);
}
.primary-nav__meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
  white-space:nowrap;
}
.primary-nav__meta b{color:var(--lime);font-weight:700}

/* ---------- 07 页脚 ---------- */
.site-footer{
  background:var(--panel-deep);
  border-top:1px solid var(--track);
  margin-top:clamp(32px,5vw,64px);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(36px,5.5vw,68px);
}
.footer-brand__name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(20px,2.4vw,26px);
  letter-spacing:.02em;
  color:var(--text);
}
.footer-brand__line{
  margin-top:8px;
  max-width:34ch;
  font-size:13.5px;
  color:var(--muted);
}
.footer-brand .btn{margin-top:20px}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--lime);
}
.footer-col__list{display:grid;gap:9px}
.footer-col__link{
  position:relative;
  display:inline-block;
  padding-left:0;
  font-size:14.5px;
  color:var(--muted);
  transition:color var(--ease),padding-left var(--ease);
}
.footer-col__link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:0;
  height:1px;
  background:var(--lime);
  transition:width var(--ease);
}
.footer-col__link:hover{color:var(--text);padding-left:12px}
.footer-col__link:hover::before{width:8px}

.footer-base{border-top:1px solid rgba(20,64,107,.8);background:rgba(6,21,39,.6)}
.footer-base__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 28px;
  padding-block:18px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.7;
  letter-spacing:.03em;
  color:var(--muted);
}
.footer-base__contact{max-width:62ch;color:var(--muted)}
.footer-base__copy{color:var(--track);white-space:nowrap}
.footer-base__copy [data-year]{color:var(--muted)}

/* ---------- 08 媒体容器 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  isolation:isolate;
  background:linear-gradient(135deg,#14406B 0%,#0E2A45 55%,#061527 100%);
  clip-path:var(--cut);
}
.media__img{width:100%;height:100%;object-fit:cover;display:block}
.media--16x9{aspect-ratio:16/9}
.media--3x2{aspect-ratio:3/2}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(232,238,245,.18) 1px,transparent 1.2px);
  background-size:6px 6px;
  opacity:.3;
  mix-blend-mode:soft-light;
}
.media--clean::after{display:none}
.media__badge{
  position:absolute;
  top:12px;
  left:12px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:#06121F;
  background:var(--lime);
  clip-path:var(--cut-sm);
}
.media__badge--amber{background:var(--amber);color:#2A0F00}
.media__badge--cyan{background:var(--cyan);color:#04212A}
.media__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:34px 16px 14px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.5;
  letter-spacing:.03em;
  color:var(--text);
  background:linear-gradient(180deg,rgba(6,21,39,0) 0%,rgba(6,21,39,.9) 100%);
}

/* ---------- 09 响应式与无障碍 ---------- */
@media (min-width:768px){
  .grid-12{grid-template-columns:repeat(8,minmax(0,1fr));gap:20px}
}
@media (min-width:1120px){
  .grid-12{grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
  .layout{grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
  .layout__main{grid-column:1 / span 8}
  .layout__aside{grid-column:10 / span 3}
  .layout__full{grid-column:1 / -1}
}
@media (max-width:1120px){
  .nav-list__link{padding:0 11px;font-size:14.5px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  body{padding-bottom:calc(var(--quickbar-h) + env(safe-area-inset-bottom,0px))}
  .brand-signature__line{display:none}
  .nav-toggle{display:inline-flex}

  .quickbar{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:80;
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:0;
    height:calc(var(--quickbar-h) + env(safe-area-inset-bottom,0px));
    padding-bottom:env(safe-area-inset-bottom,0px);
    background:var(--panel);
    border-top:1px solid rgba(182,255,59,.5);
    box-shadow:0 -10px 24px rgba(6,21,39,.65);
  }
  .quickbar__link{
    height:var(--quickbar-h);
    justify-content:center;
    padding:0 4px;
    font-size:11.5px;
    color:var(--muted);
    border-right:1px solid rgba(20,64,107,.9);
  }
  .quickbar__link:last-child{border-right:0}
  .quickbar__link::after{display:none}
  .quickbar__link:hover,.quickbar__link:focus-visible{
    color:var(--lime);
    background:rgba(182,255,59,.08);
  }

  .primary-nav{display:none}
  .primary-nav[data-open]{display:block}
  .primary-nav__inner{display:block;min-height:0;padding-block:8px 16px}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list__item{width:100%}
  .nav-list__link{
    width:100%;
    height:auto;
    padding:14px 4px;
    font-size:16px;
    border-bottom:1px solid rgba(20,64,107,.6);
  }
  .nav-list__link::before{display:none}
  .nav-list__link[aria-current="page"]::after{
    right:6px;
    left:auto;
    top:auto;
    bottom:0;
    margin-top:0;
  }
  .nav-list__link[aria-current="page"]{
    background:linear-gradient(90deg,rgba(182,255,59,.12),rgba(182,255,59,0));
  }
  .primary-nav__meta{display:none}

  .footer-base__inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .display{font-size:clamp(30px,9vw,42px)}
  .panel{padding:18px}
}

:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
}

@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .scroll-progress{transition:none}
}