/* ============================================================
   星空体育 · /assets/site.css
   共享外壳：框架式导航头 + 深空页脚 + 通用组件
   ============================================================ */

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

:root{
  --ink-900:#020812;
  --ink-800:#071426;
  --ink-700:#0D2340;
  --silver:#D9E2EC;
  --steel:#6B87A8;
  --cyan:#35E0D0;
  --orange:#FF8A3D;
  --ice:#F4F8FC;
  --green:#5BE49B;

  --bg:#071426;
  --panel:#0A1B31;
  --line:rgba(107,135,168,.26);
  --line-strong:rgba(107,135,168,.46);
  --text:#B9C8D8;
  --text-strong:#F4F8FC;

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono","SFMono-Regular",Menlo,Consolas,monospace;

  --topbar-h:70px;
  --rail-w:236px;
  --max:1240px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

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

body{
  margin:0;
  padding-top:var(--topbar-h);
  padding-left:var(--rail-w);
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.75;
  font-weight:400;
  color:var(--text);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(1200px 620px at 84% -12%, rgba(53,224,208,.10), transparent 62%),
    radial-gradient(900px 540px at 6% 6%, rgba(255,138,61,.055), transparent 66%),
    linear-gradient(180deg,#071426 0%,#050F1D 60%,#030B16 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(circle, rgba(217,226,236,.45) 1px, transparent 1.4px);
  background-size:104px 104px;
  opacity:.26;
  -webkit-mask-image:radial-gradient(130% 92% at 50% 0%, #000 0%, rgba(0,0,0,.35) 58%, transparent 82%);
  mask-image:radial-gradient(130% 92% at 50% 0%, #000 0%, rgba(0,0,0,.35) 58%, transparent 82%);
}

h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0}
ul[class],ol[class]{list-style:none}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
address{font-style:normal}

#main-content{
  position:relative;
  z-index:1;
  outline:none;
}

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

/* ---------- 工具类 ---------- */
.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:-.02em;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:.6rem;
  left:.6rem;
  z-index:99;
  padding:.62em 1.05em;
  font-size:.85rem;
  font-weight:700;
  letter-spacing:.04em;
  color:#04121F;
  background:var(--cyan);
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,9px 100%,0 calc(100% - 9px));
  transform:translateY(-160%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.64em 1.15em;
  font-size:.85rem;
  font-weight:700;
  line-height:1.1;
  letter-spacing:.04em;
  white-space:nowrap;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:background-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-accent{background:var(--cyan);color:#04121F}
.btn-accent:hover{background:#5CF0E3;color:#04121F}
.btn-ghost{background:rgba(53,224,208,.10);color:var(--cyan);box-shadow:inset 0 0 0 1px rgba(53,224,208,.34)}
.btn-ghost:hover{background:rgba(53,224,208,.20)}
.btn-warm{background:var(--orange);color:#12141B}
.btn-warm:hover{background:#FFA062;color:#12141B}

/* ============================================================
   头部
   ============================================================ */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:var(--topbar-h);
  z-index:60;
}

.topbar{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  height:var(--topbar-h);
  padding:0 clamp(1rem,2.4vw,1.9rem);
  background:linear-gradient(180deg,rgba(7,20,38,.97) 0%,rgba(7,20,38,.88) 100%);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.topbar::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,208,.55) 22%,rgba(255,138,61,.35) 62%,transparent);
  pointer-events:none;
}

.brand{
  display:flex;
  align-items:center;
  gap:.75rem;
  min-width:0;
  color:var(--ice);
}
.brand-mark{
  flex:0 0 auto;
  width:30px;
  height:30px;
  transform:rotate(45deg);
  border:1px solid rgba(53,224,208,.55);
  background:
    radial-gradient(circle at 50% 50%, rgba(53,224,208,.95) 0 2px, transparent 3px),
    linear-gradient(135deg, rgba(53,224,208,.18), rgba(53,224,208,0) 72%);
  box-shadow:inset 0 0 0 1px rgba(2,8,18,.65);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.brand:hover .brand-mark{
  border-color:var(--cyan);
  box-shadow:0 0 16px rgba(53,224,208,.45),inset 0 0 0 1px rgba(2,8,18,.65);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12;min-width:0}
.brand-name{
  font-size:1.05rem;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--ice);
}
.brand-slogan{
  font-size:.68rem;
  font-weight:500;
  letter-spacing:.18em;
  color:var(--steel);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.topbar-tools{
  display:flex;
  align-items:center;
  gap:.6rem;
}

.seg{
  display:inline-flex;
  align-items:stretch;
  border:1px solid var(--line);
  background:rgba(2,8,18,.55);
}
.seg-btn{
  padding:.52em .9em;
  font-size:.76rem;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--steel);
  transition:color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.seg-btn + .seg-btn{border-left:1px solid var(--line)}
.seg-btn:hover{color:var(--silver);background:rgba(53,224,208,.06)}
.seg-btn[aria-pressed="true"]{
  color:var(--cyan);
  background:rgba(53,224,208,.13);
  box-shadow:inset 0 -2px 0 var(--cyan);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  padding:.55em .72em;
  border:1px solid var(--line);
  font-size:.76rem;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--silver);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:rgba(53,224,208,.55);color:var(--cyan)}
.nav-toggle-bars{display:grid;gap:4px;width:18px}
.nav-toggle-bars i{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.site-header[data-open] .nav-toggle-bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 左侧框架导轨 ---------- */
.rail{
  position:fixed;
  top:var(--topbar-h);
  left:0;
  bottom:0;
  z-index:55;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  gap:1.4rem;
  padding:clamp(1.1rem,2vw,1.9rem) clamp(.9rem,1.5vw,1.35rem);
  overflow-y:auto;
  background:linear-gradient(180deg,#08182C 0%,#050F1D 68%,#020812 100%);
  border-right:1px solid var(--line);
}
.rail::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:190px;
  pointer-events:none;
  background:repeating-linear-gradient(115deg, rgba(53,224,208,.16) 0 1px, rgba(53,224,208,0) 1px 20px);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 85%);
  mask-image:linear-gradient(180deg,transparent,#000 85%);
  opacity:.55;
}

.nav{position:relative;z-index:1}
.nav-list{display:flex;flex-direction:column;gap:.2rem}
.nav-link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:.7rem;
  padding:.62rem .7rem .62rem .85rem;
  font-size:.95rem;
  font-weight:600;
  letter-spacing:.02em;
  color:#9DB1C6;
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:0;
  background:var(--cyan);
  transform:translateY(-50%);
  transition:height .2s var(--ease);
}
.nav-link:hover{color:var(--ice);background:rgba(53,224,208,.06)}
.nav-link:hover::after{height:52%}
.nav-link[aria-current="page"]{
  color:var(--ice);
  background:linear-gradient(90deg,rgba(53,224,208,.17),rgba(53,224,208,0) 92%);
}
.nav-link[aria-current="page"]::after{height:70%}
.nav-link[aria-current="page"] .nav-num{color:var(--cyan)}
.nav-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--steel);
  transition:color .18s var(--ease);
}
.nav-label{min-width:0}

.rail-note{
  position:relative;
  z-index:1;
  margin-top:auto;
  padding-top:.9rem;
  border-top:1px solid var(--line);
  font-size:.66rem;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--steel);
}

/* ---------- 滚动进度轨 ---------- */
.scroll-line{
  position:fixed;
  top:calc(var(--topbar-h) - 1px);
  left:0;
  right:0;
  height:2px;
  z-index:62;
  pointer-events:none;
  background:rgba(53,224,208,.08);
}
.scroll-line > span{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transition:transform .08s linear;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  z-index:1;
  overflow:hidden;
  color:var(--text);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#071426 0%,#030B16 62%,#020812 100%);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(720px 280px at 84% 0%, rgba(53,224,208,.11), transparent 72%),
    radial-gradient(520px 240px at 8% 24%, rgba(255,138,61,.06), transparent 74%),
    repeating-linear-gradient(115deg, rgba(107,135,168,.07) 0 1px, transparent 1px 28px);
}

.footer-inner{
  position:relative;
  display:grid;
  gap:clamp(1.5rem,3vw,2.6rem);
  grid-template-columns:minmax(0,1.6fr) minmax(0,.8fr) minmax(0,.9fr) minmax(0,1.25fr);
  max-width:var(--max);
  margin:0 auto;
  padding:clamp(2.2rem,5vw,3.6rem) clamp(1rem,3vw,2.5rem) clamp(1.6rem,3vw,2.4rem);
}

.footer-wordmark{
  font-size:clamp(1.9rem,4vw,2.9rem);
  font-weight:900;
  line-height:1;
  letter-spacing:-.02em;
  color:rgba(217,226,236,.22);
}
.footer-tagline{
  margin-top:.7rem;
  font-size:.92rem;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--cyan);
}
.footer-note{
  margin-top:.55rem;
  max-width:34ch;
  font-size:.82rem;
  line-height:1.7;
  color:var(--steel);
}

.footer-col-title{
  display:flex;
  align-items:center;
  gap:.5rem;
  margin-bottom:.85rem;
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--steel);
}
.footer-col-title::before{
  content:"";
  width:16px;
  height:1px;
  background:var(--cyan);
}
.footer-list{display:flex;flex-direction:column;gap:.45rem}
.footer-list a{
  font-size:.9rem;
  color:#A9BACB;
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.footer-list a:hover{color:var(--cyan);padding-left:.25rem}

.footer-contact{display:flex;flex-direction:column;gap:.7rem}
.footer-field{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.4rem .55rem;
  font-size:.86rem;
}
.footer-label{
  font-size:.66rem;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--steel);
  padding:.15em .45em;
  border:1px solid var(--line);
}
.footer-value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:.82rem;
  color:var(--silver);
  word-break:break-all;
}
.footer-address{
  font-size:.82rem;
  line-height:1.7;
  color:var(--steel);
}

.copy-btn{
  display:inline-flex;
  align-items:center;
  padding:.18em .55em;
  font-size:.68rem;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--steel);
  border:1px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.copy-btn:hover{color:var(--cyan);border-color:rgba(53,224,208,.55);background:rgba(53,224,208,.08)}
.copy-btn[data-copied]{color:var(--green);border-color:rgba(91,228,155,.55);background:rgba(91,228,155,.1)}

.footer-bar{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.7rem 1.6rem;
  max-width:var(--max);
  margin:0 auto;
  padding:1rem clamp(1rem,3vw,2.5rem) 1.7rem;
  border-top:1px solid var(--line);
  font-size:.76rem;
  letter-spacing:.05em;
  color:var(--steel);
}
.footer-legal{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem}
.footer-legal a{transition:color .18s var(--ease)}
.footer-legal a:hover{color:var(--cyan)}
.footer-icp{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

/* ============================================================
   通用页面组件
   ============================================================ */
.content,
.wrap{
  position:relative;
  z-index:1;
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:clamp(1.4rem,3vw,2.8rem) clamp(1rem,3vw,2.5rem) clamp(3rem,6vw,5.5rem);
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5em;
  margin-bottom:1.4rem;
  font-size:.74rem;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--steel);
}
.breadcrumb li{display:flex;align-items:center;gap:.5em}
.breadcrumb li + li::before{content:"/";color:rgba(107,135,168,.55)}
.breadcrumb a{transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--silver)}

.section{padding-block:clamp(1.6rem,3.4vw,3rem)}
.kicker{
  display:flex;
  align-items:center;
  gap:.6rem;
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--steel);
}
.kicker::before{content:"";width:26px;height:1px;background:var(--cyan)}
.sec-title{
  margin-top:.5rem;
  font-size:clamp(1.5rem,2.6vw,2.2rem);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.015em;
  color:var(--ice);
}
.lede{
  margin-top:.75rem;
  max-width:62ch;
  font-size:clamp(1rem,1.2vw,1.1rem);
  line-height:1.8;
  color:#A9BACB;
}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(1rem,2vw,1.75rem);
}

.panel{
  position:relative;
  padding:clamp(1.1rem,2.3vw,1.9rem);
  background:linear-gradient(160deg,rgba(13,35,64,.94) 0%,rgba(7,20,38,.94) 100%);
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px));
}
.panel--flat{clip-path:none}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.35em;
  padding:.24em .62em;
  font-size:.68rem;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--cyan);
  background:rgba(53,224,208,.1);
  border:1px solid rgba(53,224,208,.3);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);
}
.tag--warm{color:var(--orange);background:rgba(255,138,61,.12);border-color:rgba(255,138,61,.34)}
.tag--ok{color:var(--green);background:rgba(91,228,155,.1);border-color:rgba(91,228,155,.32)}

.table-wrap{overflow-x:auto;border:1px solid var(--line)}
.table{width:100%;border-collapse:collapse;font-size:.9rem}
.table th,
.table td{
  padding:.75rem .9rem;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--line);
}
.table thead th{
  font-size:.7rem;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--steel);
  background:rgba(2,8,18,.45);
  white-space:nowrap;
}
.table tbody tr{transition:background-color .18s var(--ease)}
.table tbody tr:hover{background:rgba(53,224,208,.07)}
.table tbody tr:last-child td{border-bottom:0}

.timeline{position:relative;padding-left:1.6rem}
.timeline::before{
  content:"";
  position:absolute;
  left:4px;
  top:.45rem;
  bottom:.45rem;
  width:1px;
  background:linear-gradient(180deg,rgba(53,224,208,.6),rgba(107,135,168,.15));
}
.timeline-item{position:relative;padding-bottom:1.4rem}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";
  position:absolute;
  left:-1.6rem;
  top:.6rem;
  width:9px;
  height:9px;
  transform:rotate(45deg);
  background:var(--ink-800);
  border:1px solid var(--cyan);
}

.img-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background:linear-gradient(150deg,#0D2340 0%,#071426 56%,#020812 100%);
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px));
}
.img-frame img{width:100%;height:100%;object-fit:cover}
.img-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(62% 58% at 72% 8%, rgba(53,224,208,.18), transparent 72%),
    linear-gradient(180deg,rgba(2,8,18,0) 40%,rgba(2,8,18,.55) 100%);
}
.img-frame figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  z-index:1;
  padding:.55rem .8rem;
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--silver);
}
.img-frame--wide{aspect-ratio:21 / 9}
.img-frame--tall{aspect-ratio:4 / 5}
.img-frame--square{aspect-ratio:1 / 1}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1100px){
  :root{--rail-w:204px}
  .nav-link{font-size:.9rem}
}

@media (max-width:1000px){
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:900px){
  body{padding-left:0}
  .nav-toggle{display:inline-flex}
  .topbar-cta{display:none}

  .rail{
    top:var(--topbar-h);
    left:0;
    right:0;
    bottom:auto;
    width:100%;
    max-height:calc(100dvh - var(--topbar-h));
    padding:1.2rem clamp(1rem,4vw,2rem) 1.6rem;
    border-right:0;
    border-bottom:1px solid var(--line);
    background:linear-gradient(180deg,#08182C 0%,#040E1B 100%);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .site-header[data-open] .rail{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .rail::after{display:none}
  .rail-note{margin-top:1.1rem}

  .nav-list{gap:.1rem}
  .nav-link{font-size:1rem;padding:.7rem .8rem .7rem 1rem}

  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr))}
}

@media (max-width:640px){
  :root{--topbar-h:62px}
  .brand-slogan{display:none}
  .brand-name{font-size:.98rem;letter-spacing:.06em}
  .seg-btn{padding:.46em .62em;font-size:.7rem;letter-spacing:.04em}
  .nav-toggle{padding:.48em .58em}
  .nav-toggle-text{display:none}

  .footer-inner{grid-template-columns:minmax(0,1fr);padding-bottom:1.4rem}
  .footer-bar{justify-content:flex-start}
  .footer-legal{gap:.4rem 1rem}

  .grid-12{grid-template-columns:minmax(0,1fr)}
  .breadcrumb{font-size:.7rem;letter-spacing:.08em}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .scroll-line > span{transition:none}
  .skip-link{transition:none}
}