/* ============================================================
   华体会体育赛 · HTH看台 共享样式表 /assets/site.css
   夜场深蓝 + 炭黑底 / 信号橙 + 冰蓝脉冲 / 蓝图网格 / 看台层叠
   ============================================================ */

:root{
  /* 色彩 */
  --ink:#0A1A2F;
  --ink-deep:#070F1A;
  --ink-mid:#0D2033;
  --char:#111418;
  --char-2:#161B22;
  --orange:#FF6B1A;
  --orange-deep:#E55A00;
  --ice:#4FC3F7;
  --ice-deep:#0288D1;
  --grass:#2ECC71;
  --violet:#8A5CF6;
  --text:#F5F9FF;
  --text-soft:#C3D2E2;
  --muted:#8A99AA;
  --line:rgba(79,195,247,.16);
  --line-soft:rgba(79,195,247,.09);
  --line-strong:rgba(79,195,247,.36);

  /* 形状 */
  --radius-lg:28px;
  --radius:18px;
  --radius-sm:12px;
  --pill:999px;

  /* 尺度 */
  --shell:min(1280px, 100% - 2rem);
  --pad-sec:clamp(2.5rem, 6vw, 5rem);
  --shadow-card:0 24px 50px -28px rgba(0,0,0,.85);

  /* 字体 */
  --font-head:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'Roboto Mono','Courier New',monospace;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;height:auto;display:block}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.18;
  margin:0 0 .6em;
  letter-spacing:-.01em;
}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--ice);text-decoration:none;transition:color .18s ease}
a:hover{color:#84D6FF}
main{display:block;position:relative;z-index:1}
#main-content{scroll-margin-top:92px}
:focus-visible{outline:2px solid var(--violet);outline-offset:3px;border-radius:8px}

/* ---------- 底层蓝图网格 ---------- */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(79,195,247,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(79,195,247,.055) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(120% 80% at 50% 0%, #000 18%, transparent 86%);
  mask-image:radial-gradient(120% 80% at 50% 0%, #000 18%, transparent 86%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(60% 40% at 88% 4%, rgba(255,107,26,.13), transparent 70%),
    radial-gradient(52% 42% at 8% 22%, rgba(79,195,247,.12), transparent 72%),
    radial-gradient(46% 42% at 70% 96%, rgba(138,92,246,.10), transparent 74%);
}

/* ---------- 跳至主内容 ---------- */
.skip-link{
  position:absolute;
  left:1rem;
  top:-120px;
  z-index:200;
  padding:.6rem 1.1rem;
  border-radius:var(--pill);
  background:var(--violet);
  color:#fff;
  font-weight:700;
  font-size:.88rem;
  transition:top .16s ease;
}
.skip-link:focus{top:.75rem;color:#fff}

/* ============================================================
   头部命令栏
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg, rgba(10,26,47,.98), rgba(10,26,47,.90));
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,107,26,.55), rgba(79,195,247,.45), transparent);
}
.hdr-grid{
  width:var(--shell);
  margin-inline:auto;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:.5rem clamp(.75rem, 2vw, 1.5rem);
  min-height:66px;
  padding-block:.5rem;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:.65rem;
  padding:.2rem 0;
  color:var(--text);
  text-decoration:none;
  border-radius:10px;
  flex:0 0 auto;
}
.brand:hover{color:var(--text)}
.brand-mark{
  position:relative;
  width:40px;
  height:40px;
  flex:none;
  border-radius:13px;
  overflow:hidden;
  background:linear-gradient(135deg, #FF6B1A 0%, #FF9247 48%, #4FC3F7 100%);
  box-shadow:0 10px 22px -12px rgba(255,107,26,.95), inset 0 0 0 1px rgba(245,249,255,.24);
  transition:transform .2s ease;
}
.brand-mark::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg, transparent 44%, rgba(10,26,47,.62) 44%, rgba(10,26,47,.62) 54%, transparent 54%);
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:8px;
  bottom:8px;
  width:13px;
  height:13px;
  border-radius:50%;
  border:2px solid rgba(10,26,47,.62);
}
.brand:hover .brand-mark{transform:rotate(-4deg)}
.brand-text{display:flex;flex-direction:column;line-height:1.06}
.brand-name{
  font-family:var(--font-head);
  font-weight:900;
  font-style:italic;
  font-size:1.06rem;
  letter-spacing:.015em;
  color:var(--text);
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:.6rem;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--ice);
}

/* 移动端按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  margin-left:auto;
  padding:.5rem .9rem .5rem .8rem;
  border-radius:var(--pill);
  border:1px solid var(--line-strong);
  background:rgba(79,195,247,.08);
  color:var(--text);
  font-size:.82rem;
  font-weight:700;
  cursor:pointer;
  transition:background-color .18s ease, border-color .18s ease;
}
.nav-toggle:hover{background:rgba(79,195,247,.16)}
.nav-toggle-bars{position:relative;display:block;width:18px;height:12px}
.nav-toggle-bars i{
  position:absolute;
  left:0;
  right:0;
  height:2px;
  border-radius:2px;
  background:var(--ice);
  transition:transform .2s ease;
}
.nav-toggle-bars i:first-child{top:0}
.nav-toggle-bars i:last-child{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:first-child{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:last-child{transform:translateY(-5px) rotate(-45deg)}
.nav-toggle[aria-expanded="true"]{border-color:rgba(255,107,26,.55);background:rgba(255,107,26,.14)}

/* 命令栏导航 */
.site-nav{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:.5rem;
}
.nav-list{display:flex;align-items:center;gap:.12rem}
.nav-item{display:block}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:.4rem;
  padding:.5rem .62rem;
  border-radius:var(--pill);
  color:var(--muted);
  font-size:.9rem;
  font-weight:600;
  white-space:nowrap;
  transition:color .18s ease, background-color .18s ease, box-shadow .18s ease;
}
.nav-idx{
  font-family:var(--font-mono);
  font-size:.6rem;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--ice);
  opacity:.72;
  transition:color .18s ease, opacity .18s ease;
}
.nav-link:hover{
  color:var(--text);
  background:rgba(79,195,247,.09);
}
.nav-link:hover .nav-idx{color:var(--orange);opacity:1}
.nav-link[aria-current="page"]{
  color:var(--text);
  background:linear-gradient(180deg, rgba(255,107,26,.18), rgba(255,107,26,.05));
  box-shadow:inset 0 0 0 1px rgba(255,107,26,.4);
}
.nav-link[aria-current="page"] .nav-idx{color:var(--orange);opacity:1}
.nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-1px;
  width:18px;
  height:2px;
  border-radius:2px;
  transform:translateX(-50%);
  background:var(--orange);
  animation:hth-pulse 2.6s ease-in-out infinite;
}
@keyframes hth-pulse{
  0%,100%{box-shadow:0 0 6px rgba(255,107,26,.6)}
  50%{box-shadow:0 0 15px rgba(255,107,26,1)}
}
.nav-cta{margin-left:.45rem;flex:0 0 auto}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.72rem 1.35rem;
  border:1px solid transparent;
  border-radius:var(--pill);
  font-family:var(--font-head);
  font-size:.92rem;
  font-weight:800;
  letter-spacing:.01em;
  text-decoration:none;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .16s ease, box-shadow .16s ease, background-color .16s ease, color .16s ease, border-color .16s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:linear-gradient(135deg, var(--orange), var(--orange-deep));
  color:#08131F;
  box-shadow:0 12px 28px -14px rgba(255,107,26,.95), inset 0 0 0 1px rgba(255,255,255,.16);
}
.btn-primary:hover{color:#08131F;box-shadow:0 18px 36px -14px rgba(255,107,26,1)}
.btn-ice{
  background:linear-gradient(135deg, var(--ice), var(--ice-deep));
  color:#04131F;
  box-shadow:0 12px 28px -16px rgba(79,195,247,.9);
}
.btn-ice:hover{color:#04131F}
.btn-ghost{
  background:rgba(79,195,247,.07);
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(79,195,247,.15);color:var(--text);border-color:var(--ice)}
.btn-sm{padding:.5rem .95rem;font-size:.82rem}
.btn-block{width:100%}

/* ============================================================
   布局容器 / 章节
   ============================================================ */
.container{width:var(--shell);margin-inline:auto}
.section{padding-block:var(--pad-sec)}
.section--tight{padding-block:clamp(1.6rem, 4vw, 3rem)}
.divider{height:1px;border:0;margin:0;background:linear-gradient(90deg, var(--line-strong), transparent)}
.stack{display:flex;flex-direction:column;gap:clamp(.6rem, 1.6vw, 1rem)}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem}

/* ============================================================
   标题体系
   ============================================================ */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-family:var(--font-mono);
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--ice);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  background:var(--line-strong);
}
.display{
  display:inline-block;
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(2.5rem, 6vw, 5rem);
  line-height:1.04;
  letter-spacing:-.025em;
  transform:skewX(-3deg);
  transform-origin:0 100%;
  color:var(--text);
  max-width:100%;
}
.display em{font-style:italic;color:var(--orange)}
.section-index{
  display:block;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(2.6rem, 7vw, 4.6rem);
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(79,195,247,.5);
  letter-spacing:.02em;
}
.lede{
  font-size:clamp(1rem, 1.5vw, 1.16rem);
  color:var(--text-soft);
  max-width:62ch;
}
.muted{color:var(--muted)}
.num{
  font-family:var(--font-mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
.note{
  padding:.35rem 0 .35rem 1rem;
  border-left:2px solid var(--orange);
  color:var(--muted);
  font-size:.9rem;
}

/* ============================================================
   网格与卡片
   ============================================================ */
.grid{display:grid;gap:clamp(1rem, 2.4vw, 1.6rem)}
.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))}

.card{
  position:relative;
  padding:clamp(1.1rem, 2.4vw, 1.75rem);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg, rgba(17,20,24,.96), rgba(13,32,51,.94));
  box-shadow:var(--shadow-card);
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card::before{
  content:"";
  position:absolute;
  top:0;
  left:clamp(1.1rem, 2.4vw, 1.75rem);
  width:54px;
  height:3px;
  border-radius:0 0 3px 3px;
  background:linear-gradient(90deg, var(--orange), var(--ice));
  opacity:.85;
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 30px 62px -30px rgba(79,195,247,.55);
}
.card-head{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:.6rem}
.card-title{font-size:1.12rem;margin:0 0 .4rem}
.card-text{margin:0;color:var(--text-soft);font-size:.95rem}
.card-meta{
  margin:.9rem 0 0;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  color:var(--muted);
}

/* 标签 */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.28rem .7rem;
  border:1px solid var(--line-strong);
  border-radius:var(--pill);
  background:rgba(79,195,247,.08);
  color:var(--ice);
  font-family:var(--font-mono);
  font-size:.66rem;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  line-height:1.6;
}
.tag--live{color:var(--grass);border-color:rgba(46,204,113,.45);background:rgba(46,204,113,.1)}
.tag--hot{color:var(--orange);border-color:rgba(255,107,26,.5);background:rgba(255,107,26,.12)}
.tag--violet{color:var(--violet);border-color:rgba(138,92,246,.5);background:rgba(138,92,246,.12)}

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb{
  width:var(--shell);
  margin-inline:auto;
  padding-block:1.1rem .2rem;
}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumb-list li{display:flex;align-items:center;gap:.45rem}
.breadcrumb-list li + li::before{content:"/";color:var(--line-strong)}
.breadcrumb-list a{color:var(--muted)}
.breadcrumb-list a:hover{color:var(--ice)}
.breadcrumb-list [aria-current="page"]{color:var(--text)}

/* ============================================================
   图像容器（供页面阶段放置图片）
   ============================================================ */
.media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255,107,26,.18), rgba(79,195,247,.16) 60%, rgba(138,92,246,.14)),
    #0D1622;
  isolation:isolate;
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(245,249,255,.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(245,249,255,.06) 1px, transparent 1px);
  background-size:32px 32px;
}
.media img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--portrait{aspect-ratio:3 / 4}
.media--square{aspect-ratio:1 / 1}
.media--wide{aspect-ratio:21 / 9}
.media-caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:1.2rem 1.2rem .95rem;
  background:linear-gradient(0deg, rgba(7,15,26,.88), transparent);
  color:rgba(245,249,255,.88);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.08em;
}

/* ============================================================
   显现协议 / 滚动进度
   ============================================================ */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .45s ease, transform .45s ease;
}
[data-reveal].is-visible{opacity:1;transform:none}

.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  z-index:80;
  width:0;
  height:2px;
  pointer-events:none;
  background:linear-gradient(90deg, var(--orange), var(--ice));
  box-shadow:0 0 12px rgba(255,107,26,.7);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  z-index:2;
  margin-top:clamp(3rem, 8vw, 6rem);
  background:linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  border-top:1px solid var(--line);
  color:var(--text);
}
.site-footer::before{
  content:"";
  display:block;
  height:3px;
  background:linear-gradient(90deg, var(--orange), var(--ice) 55%, var(--violet));
  opacity:.75;
}
.footer-grid{
  width:var(--shell);
  margin-inline:auto;
  padding:clamp(2rem, 5vw, 3.4rem) 0 1.4rem;
  display:grid;
  grid-template-columns:minmax(230px, 1.5fr) minmax(140px, .8fr) minmax(200px, 1fr);
  gap:clamp(1.5rem, 4vw, 3rem);
}
.footer-brand{display:flex;flex-direction:column;gap:.9rem;align-items:flex-start}
.footer-blurb{
  margin:0;
  max-width:34ch;
  color:var(--text-soft);
  font-size:.92rem;
}
.footer-chips{display:flex;flex-wrap:wrap;gap:.4rem}
.footer-title{
  margin:0 0 .9rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ice);
}
.footer-list{display:grid;gap:.5rem;font-size:.92rem}
.footer-list a{color:var(--text-soft)}
.footer-list a:hover{color:var(--ice)}
.footer-list--plain li{color:var(--text-soft)}
.footer-note{
  margin:.9rem 0 0;
  max-width:30ch;
  color:var(--muted);
  font-size:.8rem;
  line-height:1.65;
}
.footer-base{
  width:var(--shell);
  margin-inline:auto;
  padding:1.1rem 0 1.9rem;
  border-top:1px solid var(--line-soft);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.55rem 1.4rem;
  color:var(--muted);
  font-size:.8rem;
}
.footer-copy,.footer-icp{margin:0}
.footer-icp{font-family:var(--font-mono);letter-spacing:.04em}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:.4rem 1.2rem;
  margin-left:auto;
}
.footer-legal a{color:var(--muted)}
.footer-legal a:hover{color:var(--ice)}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:minmax(200px, 1.2fr) minmax(150px, 1fr)}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:960px){
  .grid-3,.grid-4{grid-template-columns:repeat(2, minmax(0,1fr))}
}

@media (max-width:940px){
  :root{--shell:min(1280px, 100% - 1.4rem)}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:.2rem;
    margin-left:0;
    padding:.85rem .9rem 1.15rem;
    background:linear-gradient(180deg, var(--ink-mid), var(--ink));
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 28px 50px -30px rgba(0,0,0,.95);
  }
  .site-nav[data-open]{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:.1rem}
  .nav-link{
    display:flex;
    justify-content:flex-start;
    padding:.7rem .8rem;
    border-radius:var(--radius-sm);
    font-size:.95rem;
  }
  .nav-link[aria-current="page"]::after{display:none}
  .nav-link[aria-current="page"]{
    box-shadow:inset 3px 0 0 0 var(--orange), inset 0 0 0 1px rgba(255,107,26,.28);
  }
  .nav-cta{margin:.6rem 0 0;width:100%}
  .row{flex-direction:column;align-items:stretch}
}

@media (max-width:680px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-legal{margin-left:0}
  .display{font-size:clamp(2.1rem, 9vw, 3rem)}
}

@media (max-width:520px){
  .brand-mark{width:34px;height:34px;border-radius:11px}
  .brand-name{font-size:.95rem}
  .brand-sub{font-size:.55rem;letter-spacing:.2em}
  .nav-toggle-label{display:none}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .btn:hover,.card:hover{transform:none}
}