/* ==========================================================================
   万赢体育 — 共享站点资源 /assets/site.css
   设计母题：夜间球场控制室 × 计分板数据看台
   分区：01 变量与重置 / 02 排版与容器 / 03 头部 / 04 页脚
        / 05 通用组件 / 06 图片容器 / 07 动效与无障碍 / 08 响应式
   ========================================================================== */

/* 01 变量与重置 ---------------------------------------------------------- */
:root{
  --ink:#071F1A;
  --ink-2:#0C2E26;
  --ink-3:#123D34;
  --cyan:#16E0C4;
  --cyan-soft:#7FF5E6;
  --amber:#F2B84B;
  --wine:#6B1F33;
  --indigo:#2B2160;
  --paper:#F4F7F2;
  --muted:#A9B8B1;
  --coral:#FF7A6B;
  --text-soft:#D5E3DC;

  --font-display:"Barlow Condensed",Impact,"Arial Narrow","Noto Sans SC","PingFang SC",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",SFMono-Regular,Consolas,"Courier New",monospace;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;

  --maxw:1240px;
  --gutter:clamp(16px,4vw,56px);
  --line:rgba(127,245,230,.16);
  --line-strong:rgba(22,224,196,.42);
  --cut:18px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

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

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  background-color:var(--ink);
  background-image:
    radial-gradient(120% 90% at 90% -10%, rgba(22,224,196,.10), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(43,33,96,.34), transparent 62%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,video{ display:block; max-width:100%; }
p{margin:0 0 1em;}
figure{margin:0;}
button{font:inherit;}

a{ color:var(--cyan-soft); text-decoration-thickness:1px; text-underline-offset:.18em; }
a:hover{ color:var(--cyan); }

h1,h2,h3,h4{ margin:0 0 .5em; line-height:1.15; font-weight:800; }

ul,ol{ margin:0 0 1em; padding-left:1.15em; }

::selection{ background:var(--cyan); color:#04150F; }

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:2px;
}

/* 02 排版与容器 ---------------------------------------------------------- */
.wrap{
  width:min(var(--maxw), 100% - (var(--gutter) * 2));
  margin-inline:auto;
}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.05em;
}

.visually-hidden{
  position:absolute;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:28px;height:2px;
  background:var(--cyan);
  flex:0 0 auto;
}

.section{ padding:clamp(40px,6vw,84px) 0; }
.section--tight{ padding:clamp(24px,3.4vw,42px) 0; }

.section-title{
  font-family:var(--font-display);
  font-size:clamp(26px,4vw,44px);
  line-height:1.1;
  letter-spacing:.01em;
  margin:0 0 14px;
}

.lede{
  max-width:62ch;
  font-size:clamp(16px,1.55vw,19px);
  color:var(--text-soft);
  line-height:1.8;
}

.prose{
  max-width:68ch;
  font-size:16.5px;
  line-height:1.78;
  color:var(--text-soft);
}
.prose h2,.prose h3{
  font-family:var(--font-display);
  color:var(--paper);
  margin-top:1.6em;
}
.prose strong{ color:var(--paper); }
.prose a{ color:var(--cyan); }

.rule-slash{
  height:12px;
  border:0;
  background-image:repeating-linear-gradient(100deg, rgba(22,224,196,.55) 0 2px, transparent 2px 13px);
  opacity:.55;
  margin:0;
}

/* 网格 ------------------------------------------------------------------ */
.grid{
  display:grid;
  gap:clamp(14px,1.8vw,24px);
}
.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--index{ grid-template-columns:repeat(auto-fit,minmax(210px,1fr)); }

/* 面包屑 ---------------------------------------------------------------- */
.breadcrumbs{ padding-top:20px; }
.breadcrumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 10px;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.breadcrumbs__item{ display:inline-flex; align-items:center; gap:10px; }
.breadcrumbs__item::after{
  content:"/";
  color:rgba(169,184,177,.45);
}
.breadcrumbs__item:last-child::after{ content:none; }
.breadcrumbs__link{ color:var(--cyan-soft); text-decoration:none; }
.breadcrumbs__link:hover{ color:var(--cyan); text-decoration:underline; }
.breadcrumbs__current{ color:var(--paper); }

/* 03 头部 ---------------------------------------------------------------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg, rgba(12,46,38,.98) 0%, rgba(7,31,26,.96) 100%);
  border-bottom:1px solid rgba(22,224,196,.24);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

.skip-link{
  position:absolute;
  left:12px;
  top:-64px;
  z-index:90;
  padding:10px 18px;
  background:var(--cyan);
  color:#04150F;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% 68%,calc(100% - 12px) 100%,0 100%);
  transition:top .18s var(--ease);
}
.skip-link:focus{ top:10px; color:#04150F; }

.header-progress{
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:linear-gradient(90deg, var(--cyan) 0%, var(--amber) 100%);
  transition:width .12s linear;
  pointer-events:none;
}

.header-rail{
  border-bottom:1px solid var(--line);
  background-image:repeating-linear-gradient(90deg, rgba(22,224,196,.07) 0 1px, transparent 1px 72px);
}
.header-rail__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:4px 24px;
  padding:7px 0;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.header-rail__line{ margin:0; }
.header-rail__utility{
  margin:0;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  color:var(--cyan-soft);
  letter-spacing:.1em;
}

.header-main{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:18px 0 20px;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  color:var(--paper);
  text-decoration:none;
  line-height:1.1;
  flex:0 0 auto;
}
.brand:hover{ color:var(--paper); }
.brand__mark{
  display:grid;
  place-items:center;
  flex:0 0 auto;
  width:48px;
  height:48px;
  background:var(--cyan);
  color:#04150F;
  font-family:var(--font-display);
  font-weight:800;
  font-size:20px;
  letter-spacing:-.02em;
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
  transition:background .2s var(--ease);
}
.brand:hover .brand__mark{ background:var(--cyan-soft); }
.brand__text{ display:block; }
.brand__name{
  display:block;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(20px,2.3vw,26px);
  letter-spacing:.05em;
}
.brand__line{
  display:block;
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--muted);
}

/* 主导航 */
.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(14px,1.8vw,30px);
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.5vw,26px);
  margin:0;
  padding:0;
  list-style:none;
}
.site-nav__item{ display:block; }
.site-nav__link{
  position:relative;
  display:inline-block;
  padding:6px 2px;
  color:var(--paper);
  font-size:15px;
  font-weight:500;
  letter-spacing:.03em;
  text-decoration:none;
  transition:color .18s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-1px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.site-nav__link:hover{ color:var(--cyan-soft); }
.site-nav__link:hover::after{ transform:scaleX(1); }
.site-nav__link[aria-current="page"]{ color:var(--cyan); }
.site-nav__link[aria-current="page"]::after{ transform:scaleX(1); }
.site-nav__cta{ margin-left:4px; }

/* 折叠按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:10px 16px;
  background:rgba(22,224,196,.08);
  color:var(--paper);
  border:1px solid var(--line-strong);
  font-size:14px;
  letter-spacing:.08em;
  cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% 72%,calc(100% - 10px) 100%,0 100%);
  transition:background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.nav-toggle:hover,
.nav-toggle[aria-expanded="true"]{
  background:rgba(22,224,196,.18);
  border-color:var(--cyan);
  color:var(--cyan-soft);
}
.nav-toggle__bars{
  display:grid;
  gap:4px;
  width:18px;
  flex:0 0 auto;
}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){
  transform:translateY(6px) 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(-6px) rotate(-45deg);
}
.nav-toggle__label{ white-space:nowrap; }

/* 04 页脚 ---------------------------------------------------------------- */
.site-footer{
  position:relative;
  margin-top:clamp(40px,6vw,90px);
  background:linear-gradient(180deg, #0A2620 0%, #061914 62%, #05130F 100%);
  border-top:1px solid rgba(22,224,196,.28);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:8px;
  background-image:repeating-linear-gradient(100deg, rgba(22,224,196,.6) 0 2px, transparent 2px 15px);
  opacity:.6;
  pointer-events:none;
}

.footer-grid{
  display:grid;
  grid-template-columns:1.5fr .85fr 1.35fr;
  gap:clamp(24px,3.4vw,56px);
  padding:clamp(36px,5vw,68px) 0 clamp(22px,3vw,38px);
}

.footer-brand{ min-width:0; }
.brand--footer .brand__mark{ width:40px; height:40px; font-size:16px; }
.brand--footer .brand__name{ font-size:21px; }

.footer-summary{
  margin:16px 0 0;
  max-width:38ch;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.footer-meta{
  margin:14px 0 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--amber);
  text-transform:uppercase;
}

.footer-col{ min-width:0; }
.footer-col__title{
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-col__list{
  display:grid;
  gap:9px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-col__list a{
  display:inline-block;
  color:var(--text-soft);
  font-size:15px;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.footer-col__list a:hover{
  color:var(--cyan-soft);
  border-bottom-color:rgba(22,224,196,.6);
}

.footer-contact{
  display:grid;
  gap:12px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-contact__label{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer-contact__value{
  display:block;
  margin-top:2px;
  font-size:15px;
  color:var(--paper);
  overflow-wrap:anywhere;
}

.footer-note{
  margin:18px 0 0;
  max-width:46ch;
  padding-left:12px;
  border-left:2px solid rgba(242,184,75,.55);
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding:16px 0 26px;
  border-top:1px solid rgba(169,184,177,.2);
  font-size:13px;
  color:var(--muted);
}
.footer-legal{ margin:0; font-family:var(--font-mono); letter-spacing:.05em; }
.footer-legal span{ color:var(--amber); }
.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:6px 22px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-links a{
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.footer-links a:hover{
  color:var(--cyan);
  border-bottom-color:rgba(22,224,196,.6);
}

/* 05 通用组件 ------------------------------------------------------------ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border:1px solid transparent;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1.3;
  text-decoration:none;
  cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
  transition:transform .18s var(--ease), background-color .18s var(--ease),
             color .18s var(--ease), border-color .18s var(--ease);
}
.btn--primary{ background:var(--cyan); color:#04150F; }
.btn--primary:hover{ background:var(--cyan-soft); color:#04150F; transform:translate(-2px,-2px); }
.btn--ghost{
  background:transparent;
  color:var(--paper);
  border-color:var(--line-strong);
}
.btn--ghost:hover{ border-color:var(--cyan); color:var(--cyan-soft); transform:translate(-2px,-2px); }
.btn--amber{ background:var(--amber); color:#2A1A00; }
.btn--amber:hover{ background:#FFD07A; color:#2A1A00; transform:translate(-2px,-2px); }
.btn--small{ padding:9px 16px; font-size:14px; }

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid currentColor;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  line-height:1.6;
  text-transform:uppercase;
  white-space:nowrap;
}
.badge--version{ color:var(--amber); background:rgba(242,184,75,.1); }
.badge--live{ color:var(--cyan); background:rgba(22,224,196,.12); }
.badge--wine{ color:#F3CFD8; background:var(--wine); border-color:transparent; }

.panel{
  position:relative;
  padding:clamp(18px,2.4vw,30px);
  background:var(--ink-2);
  border:1px solid var(--line);
  transition:transform .2s var(--ease), border-color .2s var(--ease);
}
.panel--cut{ clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%); }
.panel--score{
  background-image:
    radial-gradient(130% 150% at 100% 0%, rgba(22,224,196,.16), transparent 58%),
    linear-gradient(180deg, var(--ink-2), var(--ink));
}
.panel--wine{
  background-image:linear-gradient(160deg, var(--wine) 0%, #3A1020 100%);
  border-color:rgba(242,184,75,.3);
}
.panel--indigo{
  background-image:linear-gradient(160deg, var(--indigo) 0%, #171137 100%);
  border-color:rgba(127,245,230,.26);
}
.panel:hover{ border-color:var(--line-strong); transform:translateY(-2px); }
.panel__title{
  margin:0 0 10px;
  font-family:var(--font-display);
  font-size:clamp(20px,2.4vw,26px);
  letter-spacing:.02em;
}
.panel__text{
  margin:0;
  font-size:15px;
  line-height:1.8;
  color:var(--text-soft);
}

/* 06 图片容器 ------------------------------------------------------------ */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background-color:var(--ink-3);
  border:1px solid rgba(127,245,230,.2);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.media-frame__img,
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--wide{ aspect-ratio:21 / 9; }
.media-frame--tall{ aspect-ratio:3 / 4; }
.media-frame--square{ aspect-ratio:1 / 1; }
.media-frame--placeholder{
  background-image:
    linear-gradient(135deg, rgba(22,224,196,.14), transparent 56%),
    repeating-linear-gradient(90deg, rgba(127,245,230,.16) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(0deg, rgba(127,245,230,.16) 0 1px, transparent 1px 46px);
}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  margin:0;
  padding:7px 14px;
  background:rgba(7,31,26,.88);
  border-top:1px solid rgba(22,224,196,.35);
  color:var(--cyan-soft);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
}

/* 07 动效与无障碍 -------------------------------------------------------- */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease), transform .55s var(--ease);
}
html.js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html.js [data-reveal]{
    opacity:1;
    transform:none;
    transition:none;
  }
  .btn:hover,.panel:hover{ transform:none; }
}

/* 08 响应式 -------------------------------------------------------------- */
@media (max-width:1080px){
  .site-nav{ gap:16px; }
  .site-nav__list{ gap:14px; }
  .site-nav__link{ font-size:14.5px; }
}

@media (max-width:960px){
  .header-main{
    flex-wrap:wrap;
    gap:0;
    padding:14px 0 16px;
  }
  .nav-toggle{ display:inline-flex; }

  .site-nav{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-top:16px;
    padding-top:8px;
    border-top:1px solid var(--line);
  }
  .site-nav[data-open="true"]{ display:flex; }

  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav__item{
    border-bottom:1px dashed rgba(169,184,177,.22);
  }
  .site-nav__item:last-child{ border-bottom:0; }
  .site-nav__link{
    display:block;
    padding:13px 4px;
    font-size:16px;
  }
  .site-nav__link::after{ display:none; }
  .site-nav__link[aria-current="page"]{
    padding-left:18px;
    color:var(--cyan);
  }
  .site-nav__link[aria-current="page"]::before{
    content:"";
    position:absolute;
    left:2px;
    top:50%;
    width:7px;
    height:7px;
    transform:translateY(-50%) rotate(45deg);
    background:var(--cyan);
  }
  .site-nav__cta{
    margin:16px 0 6px;
    align-self:flex-start;
  }

  .footer-grid{ grid-template-columns:1fr 1fr; }
  .footer-brand{ grid-column:1 / -1; }
}

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

@media (max-width:620px){
  body{ font-size:16px; line-height:1.72; }

  .header-rail__inner{
    font-size:11.5px;
    letter-spacing:.03em;
  }
  .header-rail__line{ display:none; }

  .brand__mark{ width:42px; height:42px; font-size:17px; }
  .brand__line{ letter-spacing:.14em; font-size:10.5px; }

  .grid--2,.grid--3,.grid--4,.grid--index{ grid-template-columns:1fr; }

  .footer-grid{ grid-template-columns:1fr; gap:28px; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
  .footer-summary,.footer-note{ max-width:none; }
}

@media (max-width:400px){
  .nav-toggle__label{ display:none; }
  .brand__line{ display:none; }
}