/* ============================================================
   星空体育站 · 共享样式 /assets/site.css
   深空底蓝画布 + 夜航蓝色带 + 星云紫光晕 + 信号橙行动 + 荧光青状态
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --bg:#070B1F;
  --bg-band:#0E1738;
  --panel:#16224A;
  --panel-deep:#101A3D;
  --violet:#5B3FD1;
  --orange:#FF7A2F;
  --cyan:#3DF2E0;
  --green:#7BE495;
  --ink:#E8EEFF;
  --ink-dim:#A9B6D9;
  --line:rgba(169,182,217,.16);
  --line-strong:rgba(169,182,217,.34);
  --font-display:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-data:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shell:1240px;
  --gutter:clamp(16px,4vw,40px);
  --header-h:70px;
  --cut-sm:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  --cut-lg:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,22px 100%,0 calc(100% - 22px));
  --ease:cubic-bezier(.22,.68,.24,1);
}

/* ---------- 2. Reset 与中文排版 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.015em;
}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding-left:0}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
[hidden]{display:none !important}
[id]{scroll-margin-top:calc(var(--header-h) + 18px)}
::selection{background:rgba(91,63,209,.6);color:#fff}

:where(a,button,input,select,textarea,[tabindex]):focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- 3. 基础容器与章节 ---------- */
.container{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{
  position:relative;
  padding-block:clamp(44px,6.5vw,92px);
}
.section--band{
  background:
    linear-gradient(180deg,rgba(14,23,56,0) 0%,var(--bg-band) 18%,var(--bg-band) 82%,rgba(14,23,56,0) 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{
  display:grid;
  gap:14px;
  max-width:44rem;
  margin-bottom:clamp(24px,3.5vw,40px);
}
.section-num{
  font-family:var(--font-data);
  font-size:12px;
  line-height:1;
  letter-spacing:.3em;
  color:var(--orange);
  text-transform:uppercase;
}
.section-title{
  font-size:clamp(26px,3.6vw,40px);
  color:var(--ink);
}
.lede{
  max-width:36em;
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink-dim);
}
.body-copy{
  max-width:38em;
  color:var(--ink-dim);
}
.body-copy strong{color:var(--ink);font-weight:700}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.kicker::before{
  content:"";
  width:7px;
  height:7px;
  flex:none;
  background:var(--cyan);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}

/* ---------- 4. 网格 ---------- */
.grid{display:grid;gap:clamp(14px,2vw,22px)}
.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))}
@media (max-width:899px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:619px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
}

/* ---------- 5. 切角面板 ---------- */
.cut-panel{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background:
    linear-gradient(158deg,var(--panel) 0%,var(--panel-deep) 62%,#0B1330 100%);
  border:1px solid var(--line);
  clip-path:var(--cut-lg);
}
.cut-panel::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 55%,transparent);
  opacity:.7;
}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:13px 22px;
  border:1px solid transparent;
  background:none;
  color:var(--ink);
  font-family:var(--font-data);
  font-size:13px;
  letter-spacing:.05em;
  line-height:1.2;
  cursor:pointer;
  clip-path:var(--cut-sm);
  transition:background-color .22s var(--ease),color .22s var(--ease),
             border-color .22s var(--ease),transform .22s var(--ease);
}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--cyan)}
.btn--primary{
  background:var(--orange);
  color:#180A02;
  font-weight:700;
}
.btn--primary:hover{background:#FF9052;transform:translateY(-1px)}
.btn--ghost{
  border-color:var(--line-strong);
  color:var(--ink);
}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--sm{padding:9px 14px;font-size:12px}

/* ---------- 7. 标签与数据条 ---------- */
.tag{
  display:inline-block;
  padding:4px 9px;
  border:1px solid rgba(169,182,217,.28);
  color:var(--ink-dim);
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.08em;
  line-height:1.5;
}
.data-strip{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  clip-path:var(--cut-sm);
}
.data-item{
  padding:15px 17px;
  background:var(--bg-band);
}
.data-label{
  display:block;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-dim);
}
.data-value{
  display:block;
  margin-top:6px;
  font-family:var(--font-data);
  font-size:18px;
  line-height:1.3;
  color:var(--cyan);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb{padding-block:18px 0}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0;
  padding:0;
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--ink-dim);
}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item:not(:last-child)::after{
  content:"/";
  color:rgba(169,182,217,.45);
}
.breadcrumb-link{color:var(--ink-dim);transition:color .2s var(--ease)}
.breadcrumb-link:hover{color:var(--cyan)}
.breadcrumb-item[aria-current="page"]{color:var(--ink)}

/* ---------- 9. 分段标签 ---------- */
.segmented{margin-block:clamp(18px,2.6vw,28px)}
.segmented-list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.segmented-btn{
  padding:9px 16px;
  border:1px solid var(--line);
  background:rgba(22,34,74,.4);
  color:var(--ink-dim);
  font-family:var(--font-data);
  font-size:12.5px;
  letter-spacing:.05em;
  cursor:pointer;
  clip-path:var(--cut-sm);
  transition:color .2s var(--ease),background-color .2s var(--ease),
             border-color .2s var(--ease);
}
.segmented-btn:hover{color:var(--ink);border-color:var(--line-strong)}
.segmented-btn:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--cyan)}
.segmented-btn[aria-selected="true"]{
  background:linear-gradient(180deg,rgba(91,63,209,.42),rgba(22,34,74,.7));
  border-color:rgba(61,242,224,.5);
  color:var(--ink);
}
.segmented-panel{
  padding-top:20px;
  animation:panel-in .32s var(--ease) both;
}
@keyframes panel-in{
  from{opacity:0;transform:translateX(10px)}
  to{opacity:1;transform:none}
}

/* ---------- 10. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(140deg,#101A3D 0%,#1B2A5C 52%,#2A1F5E 100%);
  border:1px solid var(--line);
  clip-path:var(--cut-lg);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(120% 80% at 82% 0%,rgba(61,242,224,.16),transparent 58%),
    linear-gradient(180deg,rgba(7,11,31,0) 38%,rgba(7,11,31,.62) 100%);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.9) contrast(1.05);
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}

/* ---------- 11. 显现 ---------- */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
  will-change:opacity,transform;
}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 12. 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:14px;
  top:-70px;
  z-index:999;
  padding:11px 18px;
  background:var(--orange);
  color:#180A02;
  font-family:var(--font-data);
  font-size:13px;
  letter-spacing:.04em;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 13. 头部命令栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,11,31,.93);
  border-bottom:1px solid var(--line);
  color:var(--ink);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.header-inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  grid-template-areas:"brand nav tools";
  align-items:center;
  gap:clamp(12px,2vw,28px);
  width:100%;
  max-width:1320px;
  margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:var(--header-h);
}
.brand{
  grid-area:brand;
  display:inline-flex;
  align-items:center;
  gap:11px;
  min-width:0;
}
.brand-mark{
  position:relative;
  flex:none;
  width:26px;
  height:26px;
  background:linear-gradient(140deg,var(--violet) 8%,var(--cyan) 92%);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand-mark::after{
  content:"";
  position:absolute;
  top:6px;
  right:7px;
  width:5px;
  height:5px;
  background:var(--orange);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05;min-width:0}
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:17px;
  letter-spacing:.01em;
  white-space:nowrap;
  color:var(--ink);
}
.brand-tagline{
  margin-top:4px;
  font-family:var(--font-data);
  font-size:10px;
  letter-spacing:.08em;
  color:var(--ink-dim);
  white-space:nowrap;
}

.primary-nav{grid-area:nav;justify-self:center}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  list-style:none;
  margin:0;
  padding:0;
}
.nav-item{display:flex}
.nav-link{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:8px 10px;
  color:var(--ink-dim);
  font-size:13px;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease),
             box-shadow .2s var(--ease);
}
.nav-index{
  font-family:var(--font-data);
  font-size:9.5px;
  letter-spacing:.06em;
  color:rgba(169,182,217,.55);
  transition:color .2s var(--ease);
}
.nav-link:hover{
  color:var(--ink);
  background:rgba(22,34,74,.85);
}
.nav-link:hover .nav-index{color:var(--cyan)}
.nav-link[aria-current="page"]{
  color:var(--ink);
  background:linear-gradient(180deg,rgba(91,63,209,.42) 0%,rgba(22,34,74,.6) 100%);
  box-shadow:inset 0 -2px 0 0 var(--cyan);
}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan)}

.header-tools{
  grid-area:tools;
  display:flex;
  align-items:center;
  gap:14px;
}
.header-phone{
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--ink-dim);
  white-space:nowrap;
}
.header-cta{white-space:nowrap}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  border:1px solid var(--line-strong);
  background:rgba(22,34,74,.5);
  color:var(--ink);
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.1em;
  cursor:pointer;
  clip-path:var(--cut-sm);
}
.nav-toggle:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--cyan)}
.nav-toggle-label{line-height:1}
.nav-toggle-bars{
  position:relative;
  display:block;
  width:16px;
  height:12px;
  flex:none;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  background:var(--cyan);
  transition:transform .25s var(--ease),top .25s var(--ease);
}
.nav-toggle-bars::before{top:1px}
.nav-toggle-bars::after{top:9px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{top:5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{top:5px;transform:rotate(-45deg)}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.scroll-progress-bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--violet) 0%,var(--cyan) 62%,var(--orange) 100%);
}

@media (max-width:1119px){
  .header-phone{display:none}
}
@media (max-width:959px){
  .header-inner{
    grid-template-columns:1fr auto;
    grid-template-areas:
      "brand tools"
      "nav nav";
    gap:10px;
    padding-block:10px;
  }
  .nav-toggle{display:inline-flex}
  .primary-nav{
    display:none;
    justify-self:stretch;
    border-top:1px solid var(--line);
    padding-top:10px;
    padding-bottom:8px;
  }
  .primary-nav[data-open="true"]{
    display:block;
    max-height:calc(100vh - var(--header-h) - 32px);
    overflow-y:auto;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
  }
  .nav-link{
    justify-content:flex-start;
    padding:12px 12px;
    font-size:15px;
    border-left:2px solid transparent;
  }
  .nav-link:hover{border-left-color:var(--line-strong)}
  .nav-link[aria-current="page"]{
    box-shadow:none;
    border-left-color:var(--cyan);
    background:linear-gradient(90deg,rgba(91,63,209,.42) 0%,rgba(22,34,74,.2) 100%);
  }
  .nav-index{font-size:10.5px}
}
@media (max-width:639px){
  .brand-tagline{display:none}
  .brand-name{font-size:16px}
  .brand-mark{width:23px;height:23px}
  .header-cta{padding:8px 11px;font-size:11.5px}
  .nav-toggle{padding:8px 10px}
  .nav-toggle-label{display:none}
}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  border-top:1px solid var(--line-strong);
  background:
    linear-gradient(180deg,var(--bg) 0%,#0A1130 46%,var(--bg-band) 100%);
  color:var(--ink-dim);
}
.footer-aura{
  position:absolute;
  top:-40px;
  right:-12%;
  width:min(720px,90%);
  height:380px;
  pointer-events:none;
  background:
    radial-gradient(closest-side,rgba(91,63,209,.34),rgba(91,63,209,0) 72%);
}
.footer-aura::before{
  content:"";
  position:absolute;
  inset:0;
  opacity:.5;
  background:repeating-linear-gradient(90deg,rgba(169,182,217,.10) 0 1px,transparent 1px 64px);
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 34%,rgba(0,0,0,.2) 100%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 34%,rgba(0,0,0,.2) 100%);
}
.footer-inner{
  position:relative;
  width:100%;
  max-width:1320px;
  margin-inline:auto;
  padding:clamp(40px,5vw,64px) var(--gutter) 24px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.05fr 1.75fr;
  gap:clamp(28px,4vw,56px);
  padding-bottom:clamp(28px,3.5vw,44px);
  border-bottom:1px solid var(--line);
}
.footer-brand{min-width:0}
.footer-brandline{
  margin:0 0 16px;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--ink);
}
.footer-summary{
  max-width:34em;
  margin:0;
  font-size:14.5px;
  line-height:1.85;
  color:var(--ink-dim);
}
.footer-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:20px;
  padding:0;
  list-style:none;
}
.footer-tags li{
  padding:5px 10px;
  border:1px solid rgba(61,242,224,.28);
  background:rgba(61,242,224,.05);
  color:#9FE9E0;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.05em;
  line-height:1.5;
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,2.4vw,32px);
}
.footer-col{min-width:0}
.footer-col-title{
  margin:0 0 14px;
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--orange);
}
.footer-links{
  display:grid;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-links a{
  display:inline-block;
  font-size:14px;
  color:var(--ink-dim);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-links a:hover{
  color:var(--cyan);
  border-bottom-color:rgba(61,242,224,.55);
}
.footer-col--contact .contact-list{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:7px 12px;
  margin:0;
}
.contact-list dt{
  font-family:var(--font-data);
  font-size:10.5px;
  letter-spacing:.14em;
  color:rgba(169,182,217,.65);
  line-height:1.7;
}
.contact-list dd{
  margin:0;
  font-size:13px;
  line-height:1.7;
  color:var(--ink);
  word-break:break-word;
}
.contact-note{
  margin:16px 0 0;
  padding-left:12px;
  border-left:2px solid var(--violet);
  font-size:12.5px;
  line-height:1.75;
  color:var(--ink-dim);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  padding-top:20px;
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.05em;
}
.footer-icp{margin:0;color:var(--ink-dim)}
.footer-copy{margin:0;color:rgba(169,182,217,.7)}
.legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 22px;
  margin:0;
  padding:0;
  list-style:none;
}
.legal-links a{
  color:var(--ink-dim);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.legal-links a:hover{color:var(--ink);border-bottom-color:var(--line-strong)}

@media (max-width:1023px){
  .footer-top{grid-template-columns:1fr}
}
@media (max-width:719px){
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-col--contact{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:479px){
  .footer-cols{grid-template-columns:1fr}
}

/* ---------- 15. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .segmented-panel{animation:none}
  .btn--primary:hover{transform:none}
}