/* =========================================================
   半岛体育中文站 · 共享样式 /assets/site.css
   夜间球场指挥塔 × 展览画册
   ========================================================= */

:root{
  /* 色彩 */
  --ink:#06131F;
  --panel:#0D2433;
  --lime:#B8FF3D;
  --whistle:#FF6B2C;
  --cyan:#2BE0C8;
  --violet:#7C5CFF;
  --paper:#F2EBDD;
  --fog:#E8F1F5;
  --mute:#8FA6B5;
  --line:rgba(232,241,245,.14);
  --line-strong:rgba(232,241,245,.3);

  /* 尺寸与节奏 */
  --shell:1240px;
  --pad:clamp(16px,4vw,48px);
  --step:180ms;

  /* 字体族 */
  --font-display:"Barlow Condensed","Oswald","DIN Condensed","Arial Narrow",system-ui,sans-serif;
  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,picture,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
::selection{background:var(--lime);color:var(--ink)}

/* ---------- 中文排版基线 ---------- */
body{
  background:var(--ink);
  color:var(--fog);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
@media (min-width:768px){ body{font-size:17px} }

h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.18;
  text-wrap:balance;
}
h1{font-size:clamp(28px,4.4vw,44px)}
h2{font-size:clamp(24px,3.4vw,32px)}
h3{font-size:clamp(18px,2.2vw,24px)}
h4{font-size:18px}
strong{font-weight:800}
small{font-size:12.5px}

.display-num{
  font-family:var(--font-display);
  font-weight:900;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
  line-height:.86;
  display:block;
}

/* ---------- 焦点与减弱动效 ---------- */
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}

/* ---------- 布局工具 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.section{padding-block:clamp(32px,5vw,64px)}
#main-content{scroll-margin-top:150px}
@media (max-width:900px){ #main-content{scroll-margin-top:96px} }

.rule{height:1px;border:0;background:var(--line);margin-block:clamp(24px,4vw,44px)}

.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--mute);
  line-height:1.4;
}
.eyebrow::before{
  content:"";
  flex:none;
  width:22px;
  height:2px;
  background:var(--whistle);
}

.prose{max-width:68ch}
.prose p{margin-block:0 1.05em}
.prose p:last-child{margin-bottom:0}
.prose a{
  color:var(--cyan);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.prose a:hover{color:var(--lime)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-family:var(--font-head);
  font-size:14px;
  font-weight:900;
  letter-spacing:.04em;
  line-height:1.2;
  border:1px solid transparent;
  border-radius:2px;
  cursor:pointer;
  transition:background-color var(--step) ease,color var(--step) ease,
             border-color var(--step) ease,transform var(--step) ease;
}
.btn--solid{background:var(--whistle);color:#0A0603}
.btn--solid:hover,.btn--solid:focus-visible{background:var(--lime);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--fog);border-color:var(--line-strong)}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--lime);color:var(--lime)}

/* ---------- 展览标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 8px;
  font-size:11.5px;
  font-weight:800;
  letter-spacing:.12em;
  line-height:1.5;
  text-transform:uppercase;
  border:1px solid currentColor;
  border-radius:2px;
  color:var(--cyan);
  white-space:nowrap;
}
.tag--lime{color:var(--lime)}
.tag--whistle{color:var(--whistle)}
.tag--violet{color:var(--violet)}
.tag--paper{color:var(--ink);background:var(--paper);border-color:var(--paper)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-size:13px;
  color:var(--mute);
  padding-block:18px 0;
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li::after{content:"/";color:rgba(143,166,181,.55)}
.breadcrumb li:last-child::after{content:none}
.breadcrumb a{color:var(--mute);transition:color var(--step) ease}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--cyan)}

/* ---------- 数据面板 / 图片容器 ---------- */
.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:2px;
  padding:clamp(18px,2.6vw,28px);
}

.figure{display:block;margin:0}
.figure__media{
  position:relative;
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:2px;
  aspect-ratio:16/9;
}
.figure__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 320ms ease;
}
.figure__media:hover img{transform:scale(1.02)}
.figure__media--plot{
  background-image:
    radial-gradient(circle at 18% 24%,rgba(184,255,61,.22),transparent 46%),
    radial-gradient(circle at 74% 68%,rgba(43,224,200,.24),transparent 52%),
    linear-gradient(140deg,rgba(124,92,255,.18),transparent 62%),
    repeating-linear-gradient(90deg,rgba(232,241,245,.07) 0 1px,transparent 1px 56px);
}
.figure__caption{
  display:flex;
  align-items:baseline;
  gap:10px;
  margin-top:10px;
  font-size:12.5px;
  line-height:1.65;
  color:var(--mute);
}
.figure__num{
  flex:none;
  font-family:var(--font-display);
  font-weight:700;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--whistle);
}

/* =========================================================
   头部
   ========================================================= */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:300;
  padding:10px 16px;
  background:var(--lime);
  color:var(--ink);
  font-size:14px;
  font-weight:800;
  border-radius:2px;
  transform:translateY(-200%);
  transition:transform var(--step) ease;
}
.skip-link:focus{transform:translateY(0)}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink);
}

/* 上层品牌条 */
.topbar{
  background:var(--panel);
  border-bottom:1px solid var(--line);
  box-shadow:inset 3px 0 0 var(--lime);
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,3vw,36px);
  min-height:66px;
  padding-block:10px;
}

.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand__mark{
  flex:none;
  width:10px;
  height:28px;
  background:linear-gradient(180deg,var(--lime) 0 55%,var(--whistle) 55% 100%);
}
.brand__text{
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  font-family:var(--font-head);
  font-size:18px;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--fog);
  line-height:1;
}
.brand__sub{
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.2em;
  color:var(--mute);
}
.topbar__statement{
  max-width:32ch;
  padding-left:clamp(10px,1.8vw,20px);
  border-left:1px solid var(--line);
  font-size:13px;
  line-height:1.55;
  color:var(--mute);
}

.quick{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 18px;
  margin-left:auto;
}
.quick__link{
  position:relative;
  display:inline-block;
  padding-block:4px;
  font-size:13px;
  font-weight:600;
  color:var(--mute);
  transition:color var(--step) ease;
}
.quick__link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--step) ease;
}
.quick__link:hover,.quick__link:focus-visible{color:var(--fog)}
.quick__link:hover::after,.quick__link:focus-visible::after{transform:scaleX(1)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:8px 12px;
  font-size:12.5px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--fog);
  border:1px solid var(--line-strong);
  border-radius:2px;
  transition:color var(--step) ease,border-color var(--step) ease;
}
.nav-toggle:hover,.nav-toggle:focus-visible{color:var(--lime);border-color:var(--lime)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  width:100%;
  background:currentColor;
  transition:transform var(--step) ease,opacity var(--step) 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}

/* 下层栏目条 */
.navbar{
  position:relative;
  background:var(--ink);
  border-bottom:1px solid var(--line);
}
.navbar__inner{
  display:flex;
  align-items:stretch;
  gap:clamp(16px,3vw,34px);
  min-height:64px;
}

.rail{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-width:46px;
  padding-block:12px;
  border-right:1px solid var(--line);
}
.rail__label{
  writing-mode:vertical-rl;
  font-size:10px;
  font-weight:700;
  letter-spacing:.34em;
  color:var(--mute);
  line-height:1;
}
.rail__dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--whistle);
}

.nav{flex:1 1 auto;display:flex;align-items:center}
.nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:clamp(6px,1.6vw,26px);
  width:100%;
}
.nav__item{display:flex}
.nav__link{
  position:relative;
  display:inline-block;
  padding:19px 2px;
  font-family:var(--font-head);
  font-size:15px;
  font-weight:700;
  color:var(--fog);
  line-height:1.35;
  transition:color var(--step) ease;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:11px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--step) ease;
}
.nav__link:hover,.nav__link:focus-visible{color:var(--lime)}
.nav__link:hover::after,.nav__link:focus-visible::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--lime)}
.nav__link[aria-current="page"]::after{transform:scaleX(1)}

.nav__cta{
  flex:none;
  align-self:center;
  padding:11px 20px;
  font-family:var(--font-head);
  font-size:14px;
  font-weight:900;
  letter-spacing:.03em;
  color:#0A0603;
  background:var(--whistle);
  border-radius:2px;
  transition:background-color var(--step) ease,transform var(--step) ease;
}
.nav__cta:hover,.nav__cta:focus-visible{background:var(--lime);transform:translateY(-2px)}

.readbar{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.readbar__fill{
  display:block;
  width:100%;
  height:100%;
  background:linear-gradient(90deg,var(--lime),var(--cyan));
  transform:scaleX(0);
  transform-origin:left center;
  will-change:transform;
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;
  background:var(--panel);
  border-top:1px solid var(--line);
  padding-block:clamp(40px,6vw,72px) clamp(20px,3vw,32px);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:linear-gradient(
    90deg,
    var(--lime) 0 22%,
    var(--cyan) 22% 46%,
    var(--whistle) 46% 68%,
    var(--violet) 68% 100%
  );
}

.footer__top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);
  gap:clamp(28px,5vw,64px);
  align-items:start;
}
.footer__intro .eyebrow{margin-bottom:14px}
.footer__brand{
  font-family:var(--font-head);
  font-size:clamp(22px,3vw,30px);
  font-weight:900;
  letter-spacing:-.03em;
  color:var(--fog);
  line-height:1.2;
}
.footer__statement{
  margin-top:10px;
  max-width:30ch;
  font-size:15px;
  line-height:1.7;
  color:var(--mute);
}
.footer__intro .btn{margin-top:22px}

.footer__groups{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(16px,2.5vw,32px);
}
.tag-group__title{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-head);
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--fog);
  line-height:1.4;
}
.tag-group__num{
  font-family:var(--font-display);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--whistle);
}
.tag-group__list{display:flex;flex-direction:column;gap:9px}
.tag-group__link{
  position:relative;
  display:inline-block;
  font-size:14px;
  line-height:1.6;
  color:var(--mute);
  transition:color var(--step) ease;
}
.tag-group__link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:1px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--step) ease;
}
.tag-group__link:hover,.tag-group__link:focus-visible{color:var(--lime)}
.tag-group__link:hover::after,.tag-group__link:focus-visible::after{transform:scaleX(1)}

.footer__meta{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);
  gap:20px 40px;
  align-items:start;
  margin-top:clamp(32px,5vw,56px);
  padding-top:22px;
  border-top:1px solid var(--line);
}
.footer__contact{display:flex;flex-direction:column;gap:6px}
.footer__contact-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--fog);
  word-break:break-word;
}
.footer__contact-key{
  flex:none;
  min-width:4ch;
  font-weight:800;
  color:var(--cyan);
  letter-spacing:.06em;
}
.footer__note{
  margin-top:6px;
  max-width:52ch;
  font-size:12.5px;
  line-height:1.75;
  color:var(--mute);
}
.footer__legal{
  display:flex;
  flex-direction:column;
  gap:6px;
  font-size:12.5px;
  line-height:1.9;
  color:var(--mute);
  text-align:right;
  letter-spacing:.02em;
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1080px){
  .topbar__statement{display:none}
  .footer__top{grid-template-columns:1fr}
  .footer__groups{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:900px){
  .quick{display:none}
  .nav-toggle{display:inline-flex}
  .topbar__inner{min-height:58px}

  .navbar{border-bottom:0}
  .navbar__inner{min-height:0;gap:0;padding-block:0}
  .rail{display:none}
  .nav__cta{display:none}

  .nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    max-height:78vh;
    overflow-y:auto;
    background:var(--panel);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .nav[data-open="true"]{display:flex}

  .nav__list{flex-direction:column;align-items:stretch;gap:0;padding-block:6px}
  .nav__item{border-bottom:1px solid var(--line)}
  .nav__item:last-child{border-bottom:0}
  .nav__link{display:block;padding:15px var(--pad);font-size:16px}
  .nav__link::after{display:none}
  .nav__link[aria-current="page"]{
    background:linear-gradient(90deg,rgba(184,255,61,.14),transparent 72%);
    box-shadow:inset 3px 0 0 var(--lime);
  }

  .footer__meta{grid-template-columns:1fr}
  .footer__legal{text-align:left}
}

@media (max-width:620px){
  .brand__text{font-size:16px}
  .brand__sub{letter-spacing:.14em}
  .footer__groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px}
  .footer__statement{max-width:none}
  .btn{padding:11px 18px;font-size:13.5px}
}