/* ==========================================================================
   威廉体育官网 · 共享样式表  /assets/site.css
   深夜数据控制室 + 球场边线视角：框架导航 / 记分牌数字 / 玻璃层与实色层并置
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:#06110E;
  --charcoal:#0B0F12;
  --pitch:#0E241E;
  --glass:#12332B;
  --line:#1E5C4A;
  --white:#EAF6F0;
  --muted:#9FB8AE;
  --signal:#FF7A1A;
  --cyan:#19E3C2;
  --amber:#F2C94C;

  --glass-fill:rgba(18,51,43,.55);
  --glass-deep:rgba(9,15,19,.96);
  --hair:rgba(30,92,74,.65);

  --shell-pad:3rem;
  --shell:min(1440px, 100% - var(--shell-pad));
  --header-h:76px;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-cond:"DIN Alternate","Arial Narrow","Helvetica Neue",var(--font-sans);
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Roboto Mono","Courier New",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
  --radius:3px;
}

/* ---------- 2. Reset 与基线 ---------- */
*,*::before,*::after{box-sizing:border-box;}

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

body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--white);
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 680px at 88% -8%, rgba(25,227,194,.075), transparent 62%),
    radial-gradient(900px 620px at -6% 12%, rgba(255,122,26,.055), transparent 58%);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* 球场坐标网格：固定铺满，只从顶部渐隐显示 */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(30,92,74,.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,92,74,.16) 1px, transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(130% 86% at 50% 0%, #000 6%, transparent 78%);
  mask-image:radial-gradient(130% 86% at 50% 0%, #000 6%, transparent 78%);
}

body,
h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl,dd,fieldset{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,video{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:0;}
table{border-collapse:collapse;width:100%;}

a{color:inherit;text-decoration:none;}

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

::selection{background:var(--signal);color:#06110E;}

main,#main-content{position:relative;z-index:1;}

/* ---------- 3. 排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-cond);
  font-weight:800;
  line-height:1.06;
  letter-spacing:-.005em;
  color:var(--white);
}
h1{font-size:clamp(2.35rem,6.2vw,5.25rem);}
h2{font-size:clamp(1.7rem,3.3vw,2.55rem);}
h3{font-size:clamp(1.2rem,2vw,1.55rem);}
h4{font-size:clamp(1rem,1.4vw,1.15rem);letter-spacing:.02em;}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:.02em;
}
.num{
  font-family:var(--font-mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:-.01em;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;}

.lede{
  max-width:62ch;
  font-size:clamp(16.5px,1.5vw,19px);
  line-height:1.85;
  color:rgba(234,246,240,.82);
}

/* ---------- 4. 布局容器 ---------- */
.shell,.section{
  width:var(--shell);
  margin-inline:auto;
}
.section{padding-block:clamp(48px,7vw,96px);}
.section--tight{padding-block:clamp(30px,4vw,54px);}
.section--flush{padding-block:0;}

.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  gap:14px 28px;
  margin-bottom:clamp(26px,4vw,46px);
}
.section__head h2{flex:1 1 320px;}

.divider{
  height:1px;
  border:0;
  margin-block:clamp(28px,4vw,52px);
  background:linear-gradient(90deg, var(--line), rgba(30,92,74,0));
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  line-height:1;
  white-space:nowrap;
  border:1px solid transparent;
  border-radius:var(--radius);
  cursor:pointer;
  transition:background-color .2s var(--ease), color .2s var(--ease),
             border-color .2s var(--ease), transform .2s var(--ease);
}
.btn:active{transform:translateY(1px);}

.btn--signal{
  background:var(--signal);
  color:#0B0F12;
  border-color:var(--signal);
  box-shadow:0 14px 30px -20px rgba(255,122,26,.95);
}
.btn--signal:hover{background:#FFA054;border-color:#FFA054;color:#0B0F12;}

.btn--ghost{
  background:var(--glass-fill);
  color:var(--white);
  border-color:var(--line);
}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);}

.btn--cyan{
  background:var(--cyan);
  color:#06110E;
  border-color:var(--cyan);
}
.btn--cyan:hover{background:#5CF0DA;border-color:#5CF0DA;}

/* ---------- 6. 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  white-space:nowrap;
  color:var(--muted);
  background:rgba(18,51,43,.6);
  border:1px solid var(--line);
  border-radius:2px;
}
.tag--signal{color:var(--signal);border-color:rgba(255,122,26,.5);background:rgba(255,122,26,.09);}
.tag--cyan{color:var(--cyan);border-color:rgba(25,227,194,.45);background:rgba(25,227,194,.08);}
.tag--amber{color:var(--amber);border-color:rgba(242,201,76,.45);background:rgba(242,201,76,.08);}

/* ---------- 7. 面板 / 卡片 ---------- */
.panel{
  position:relative;
  padding:clamp(20px,2.4vw,28px);
  background:var(--glass-fill);
  border:1px solid var(--line);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(9px);
  backdrop-filter:blur(9px);
}
.panel--solid{
  background:var(--pitch);
  border-color:var(--hair);
  -webkit-backdrop-filter:none;
  backdrop-filter:none;
}
.panel__label{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.panel__title{
  margin-top:8px;
  font-family:var(--font-cond);
  font-size:1.25rem;
  font-weight:800;
  line-height:1.2;
  color:var(--white);
}
.panel__meta{margin-top:10px;font-size:13.5px;line-height:1.75;color:var(--muted);}

/* ---------- 8. 网格 ---------- */
.grid{display:grid;gap:clamp(18px,2.4vw,28px);}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(232px,1fr));}
.grid--split{grid-template-columns:minmax(0,5fr) minmax(0,7fr);}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb{padding-top:16px;}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:rgba(30,92,74,.95);}
.breadcrumb__link{color:var(--muted);}
.breadcrumb__link:hover{color:var(--cyan);}
.breadcrumb__current{color:var(--white);}

/* ---------- 10. 正文 ---------- */
.prose{
  max-width:72ch;
  font-size:16.5px;
  line-height:1.95;
  color:rgba(234,246,240,.86);
}
.prose > * + *{margin-top:1.1em;}
.prose h2{margin-top:1.9em;font-size:clamp(1.45rem,2.6vw,2.05rem);}
.prose h3{margin-top:1.55em;}
.prose ul{padding-left:0;}
.prose ul li{position:relative;padding-left:20px;}
.prose ul li + li{margin-top:.5em;}
.prose ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.9em;
  width:9px;
  height:1px;
  background:var(--cyan);
}
.prose strong{color:var(--white);font-weight:700;}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--white);}

/* ---------- 11. 图片 / 图形容器 ---------- */
.figure-plate{
  position:relative;
  display:block;
  margin:0;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(140deg,#0E241E 0%,#12332B 55%,#0B0F12 100%);
}
.figure-plate::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background-image:
    repeating-linear-gradient(90deg, rgba(30,92,74,.4) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(30,92,74,.4) 0 1px, transparent 1px 48px);
}
.figure-plate > img,
.figure-plate > picture > img,
.figure-plate > svg{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure-plate--21x9{aspect-ratio:21 / 9;}
.figure-plate--16x9{aspect-ratio:16 / 9;}
.figure-plate--4x3{aspect-ratio:4 / 3;}
.figure-plate--1x1{aspect-ratio:1 / 1;}
.figure-plate--3x4{aspect-ratio:3 / 4;}

.figure-plate__tag{
  position:absolute;
  top:12px;
  left:12px;
  z-index:3;
  padding:5px 10px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--cyan);
  background:rgba(6,17,14,.86);
  border:1px solid rgba(25,227,194,.4);
  border-radius:2px;
}
.figure-plate__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:3;
  padding:28px 16px 14px;
  font-size:12.5px;
  line-height:1.7;
  color:rgba(234,246,240,.86);
  background:linear-gradient(180deg, transparent, rgba(6,17,14,.92));
}

/* ---------- 12. 显现协议 ---------- */
.js-motion [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .65s var(--ease), transform .65s var(--ease);
}
.js-motion [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 13. 页头 ---------- */
.skip-link{
  position:absolute;
  left:14px;
  top:-120px;
  z-index:99;
  padding:10px 18px;
  font-size:13px;
  font-weight:700;
  color:#06110E;
  background:var(--cyan);
  border-radius:0 0 3px 3px;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0;}

.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,17,14,.88);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--line);
  box-shadow:0 20px 44px -34px rgba(0,0,0,.95);
}
.site-header::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  pointer-events:none;
  background:linear-gradient(90deg, transparent, rgba(25,227,194,.45) 20%, rgba(255,122,26,.45) 80%, transparent);
  opacity:.7;
}

.header-frame{
  position:relative;
  width:var(--shell);
  margin-inline:auto;
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  gap:clamp(14px,2.6vw,40px);
  padding-block:12px;
}

.brand{
  display:flex;
  flex-direction:column;
  gap:3px;
  margin-right:auto;
  flex:0 0 auto;
}
.brand__mark{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-cond);
  font-size:1.375rem;
  font-weight:800;
  line-height:1;
  letter-spacing:.06em;
  color:var(--white);
}
.brand__mark::before{
  content:"";
  width:10px;
  height:10px;
  flex:0 0 auto;
  background:var(--signal);
  clip-path:polygon(0 0,100% 0,100% 70%,65% 100%,0 100%);
}
.brand__tagline{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--muted);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--white);
  background:rgba(18,51,43,.6);
  border:1px solid var(--line);
  border-radius:var(--radius);
  cursor:pointer;
  transition:border-color .2s var(--ease), color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}

.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  transition:background-color .22s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  transition:transform .24s var(--ease);
}
.nav-toggle__bars::before{top:-6px;}
.nav-toggle__bars::after{top:6px;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg);}

.primary-nav{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,26px);
}
.primary-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
}
.primary-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:10px 13px 12px;
  font-size:14px;
  font-weight:500;
  letter-spacing:.05em;
  color:var(--muted);
  border-radius:2px;
  transition:color .22s var(--ease), background-color .22s var(--ease);
}
.primary-nav__link::after{
  content:"";
  position:absolute;
  left:13px;
  right:13px;
  bottom:5px;
  height:2px;
  background:var(--signal);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s var(--ease), background-color .28s var(--ease);
}
.primary-nav__link:hover,
.primary-nav__link:focus-visible{
  color:var(--white);
  background:rgba(18,51,43,.75);
}
.primary-nav__link:hover::after,
.primary-nav__link:focus-visible::after{transform:scaleX(1);}
.primary-nav__link[aria-current="page"]{
  color:var(--white);
  font-weight:700;
  background:rgba(18,51,43,.6);
}
.primary-nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--cyan);
}

.primary-nav__cta{flex:0 0 auto;}

.header-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:2px;
  z-index:2;
  pointer-events:none;
  background:linear-gradient(90deg, var(--cyan), var(--amber) 55%, var(--signal));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .1s linear;
}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:clamp(72px,10vw,140px);
  font-size:14px;
  color:var(--muted);
  background:linear-gradient(180deg, #0B0F12 0%, #08110F 100%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  display:block;
  height:3px;
  background:repeating-linear-gradient(90deg, var(--line) 0 26px, rgba(30,92,74,0) 26px 34px);
}

.footer-frame{
  width:var(--shell);
  margin-inline:auto;
  padding-block:clamp(44px,6vw,72px);
  display:grid;
  grid-template-columns:
    minmax(210px,1.35fr)
    repeat(3, minmax(128px,.85fr))
    minmax(240px,1.25fr);
  gap:clamp(28px,3vw,40px) clamp(18px,2.2vw,34px);
  align-items:start;
}

.footer-brand__link{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-cond);
  font-size:1.5rem;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--white);
}
.footer-brand__link::before{
  content:"";
  width:9px;
  height:9px;
  flex:0 0 auto;
  background:var(--signal);
  clip-path:polygon(0 0,100% 0,100% 70%,65% 100%,0 100%);
}
.footer-brand__line{
  margin-top:14px;
  max-width:34ch;
  line-height:1.85;
  color:var(--muted);
}
.footer-brand__meta{
  margin-top:14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(159,184,174,.78);
}

.footer-nav__title{
  padding-bottom:10px;
  margin-bottom:14px;
  font-family:var(--font-sans);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--white);
  border-bottom:1px solid var(--hair);
}
.footer-nav__list li + li{margin-top:9px;}
.footer-nav__list a{
  display:inline-flex;
  align-items:center;
  gap:0;
  font-size:14px;
  color:var(--muted);
  transition:color .2s var(--ease), gap .2s var(--ease);
}
.footer-nav__list a::before{
  content:"";
  width:0;
  height:1px;
  background:var(--cyan);
  transition:width .24s var(--ease);
}
.footer-nav__list a:hover,
.footer-nav__list a:focus-visible{color:var(--white);}
.footer-nav__list a:hover::before,
.footer-nav__list a:focus-visible::before{width:12px;margin-right:8px;}

.footer-contact__list{display:grid;gap:11px;}
.footer-contact__item{display:grid;gap:2px;}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:rgba(159,184,174,.7);
}
.footer-contact__value{
  font-size:14px;
  line-height:1.6;
  color:var(--white);
  word-break:break-all;
}
.footer-contact__note{
  margin-top:16px;
  padding-left:12px;
  font-size:12.5px;
  line-height:1.75;
  color:var(--muted);
  border-left:2px solid var(--signal);
}

.footer-base{
  border-top:1px solid rgba(30,92,74,.6);
  background:rgba(0,0,0,.28);
}
.footer-base__inner{
  width:var(--shell);
  margin-inline:auto;
  padding-block:18px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(159,184,174,.8);
}
.footer-base__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 18px;
}
.footer-base__icp{
  color:var(--muted);
  padding:2px 8px;
  border:1px solid var(--hair);
  border-radius:2px;
}
.footer-base__note{font-size:11.5px;color:rgba(159,184,174,.7);}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1180px){
  .footer-frame{
    grid-template-columns:repeat(3, minmax(0,1fr));
  }
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:1080px){
  .grid--split{grid-template-columns:minmax(0,1fr);}
}

@media (max-width:980px){
  :root{--shell-pad:2rem;--header-h:66px;}

  .nav-toggle{display:inline-flex;}
  .brand__tagline{display:none;}

  .primary-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:grid;
    gap:8px;
    padding:16px clamp(16px,4vw,32px) 22px;
    background:var(--glass-deep);
    border-bottom:1px solid var(--line);
    box-shadow:0 30px 52px -34px rgba(0,0,0,.98);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s linear;
  }
  .primary-nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .primary-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }
  .primary-nav__link{
    justify-content:flex-start;
    padding:13px 12px;
    font-size:15px;
    border:1px solid rgba(30,92,74,.55);
  }
  .primary-nav__link::after{display:none;}
  .primary-nav__link[aria-current="page"]{
    border-color:var(--cyan);
    background:rgba(25,227,194,.1);
  }
  .primary-nav__cta{width:100%;margin-top:6px;}

  .site-header[data-open]{border-bottom-color:var(--cyan);}
}

@media (max-width:760px){
  :root{--shell-pad:1.5rem;}
  body{font-size:15.5px;}

  .footer-frame{grid-template-columns:repeat(2, minmax(0,1fr));}
  .footer-contact{grid-column:1 / -1;}
}

@media (max-width:520px){
  .footer-frame{grid-template-columns:minmax(0,1fr);}
  .footer-base__inner{flex-direction:column;align-items:flex-start;}
  .nav-toggle__text{display:none;}
}

/* ---------- 16. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-motion [data-reveal]{opacity:1;transform:none;}
  .header-progress{display:none;}
  .primary-nav{transition:none;}
}