/* ============================================================
   星空体育主站 · 共享样式 /assets/site.css
   深空底蓝为基底，三级色阶分区，堆叠画板式骨架
   ============================================================ */

:root{
  --deep:#0B1026;
  --panel:#141B3C;
  --line:#2A3363;
  --nebula:#6C4AB6;
  --gold:#F5C542;
  --ice:#3EC6C6;
  --comet:#FF8A5B;
  --ink:#EDF1FF;
  --ink-2:#A7B1DA;
  --paper:#F4F6FF;
  --paper-ink:#141B3C;
  --paper-ink-2:#3A426B;

  --radius-lg:28px;
  --radius-md:18px;
  --radius-pill:999px;

  --header-h:78px;
  --shell:1320px;
  --content:1240px;

  --ease:cubic-bezier(.22,.61,.36,1);

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

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}

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

body{
  margin:0;
  background-color:var(--deep);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img,svg,video{display:block;max-width:100%;height:auto;}

h1,h2,h3,h4,h5{
  font-family:var(--font-body);
  font-weight:700;
  line-height:1.24;
  letter-spacing:.01em;
  margin:0 0 .6em;
  color:var(--ink);
}

p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;}
strong{font-weight:700;color:var(--ink);}

a{
  color:#B79BE8;
  text-decoration:none;
  transition:color .2s var(--ease);
}
a:hover{color:var(--ice);}

:focus-visible{
  outline:2px solid var(--ice);
  outline-offset:3px;
  border-radius:6px;
}
a:focus-visible,button:focus-visible{outline:2px solid var(--ice);outline-offset:3px;}

::selection{background:rgba(108,74,182,.55);color:#fff;}

main{
  display:block;
  padding-top:var(--header-h);
  min-height:50vh;
}

/* ---------- 排版工具 ---------- */
.t-display{
  font-family:var(--font-body);
  font-weight:900;
  font-size:clamp(48px,8vw,112px);
  line-height:1.02;
  letter-spacing:.02em;
  margin:0;
  background-image:linear-gradient(120deg,#F5C542 0%,#FFE9A8 38%,#EDF1FF 82%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.t-section{
  font-size:clamp(26px,3.6vw,44px);
  font-weight:700;
  line-height:1.22;
  margin:0;
  color:var(--ink);
}

.t-sub{
  font-size:clamp(18px,2.1vw,24px);
  font-weight:600;
  margin:0;
  color:var(--ink);
}

.t-note{
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.16em;
  line-height:1.7;
  color:var(--ink-2);
  margin:0;
}

.t-note--vertical{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  letter-spacing:.3em;
}

.t-note--tilt{transform:rotate(-6deg);}

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

.lede{
  font-size:clamp(16px,1.4vw,18px);
  line-height:1.85;
  color:var(--ink-2);
  max-width:64ch;
}

.rule{
  height:1px;
  border:0;
  margin:0;
  background:var(--line);
}

/* ---------- 画板与容器 ---------- */
.board{
  position:relative;
  width:100%;
  padding:clamp(56px,9vw,140px) clamp(16px,4vw,40px);
}

.board__inner{
  max-width:var(--content);
  margin:0 auto;
}

.board--panel{background:var(--panel);}

.board--paper{
  background:var(--paper);
  color:var(--paper-ink-2);
}
.board--paper h1,
.board--paper h2,
.board--paper h3,
.board--paper .t-section,
.board--paper .t-sub,
.board--paper .footer-brand__name{color:var(--paper-ink);}
.board--paper .t-note,
.board--paper .lede,
.board--paper .breadcrumbs{color:#5A6494;}
.board--paper a{color:#5B37A8;}
.board--paper a:hover{color:#0F8E8E;}

.board__index{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.2em;
  color:var(--nebula);
  margin:0 0 18px;
}
.board__index::before{
  content:"";
  width:4px;
  height:20px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--nebula),var(--ice));
}

.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.22em;
  color:var(--ink-2);
  margin:0 0 14px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border-radius:var(--radius-pill);
  font-family:var(--font-body);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  white-space:nowrap;
  cursor:pointer;
  border:0;
  text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),
             background-color .2s var(--ease),color .2s var(--ease);
}

.btn-gold{
  background-image:linear-gradient(120deg,#F5C542 0%,#FFD976 55%,#F0A93B 100%);
  color:#1A1206;
}
.btn-gold:hover{
  color:#1A1206;
  transform:translateY(-2px);
  box-shadow:0 16px 34px -16px rgba(245,197,66,.85);
}

.btn-ghost{
  background-color:transparent;
  color:var(--ink);
  box-shadow:inset 0 0 0 1px var(--line);
}
.btn-ghost:hover{
  color:var(--ink);
  background-color:rgba(108,74,182,.22);
  box-shadow:inset 0 0 0 1px rgba(108,74,182,.6);
}

.btn-ice{
  background-color:rgba(62,198,198,.14);
  color:var(--ice);
  box-shadow:inset 0 0 0 1px rgba(62,198,198,.42);
}
.btn-ice:hover{
  color:#DFFBFB;
  background-color:rgba(62,198,198,.26);
}

/* ---------- 胶囊标签 ---------- */
.tag,.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  font-size:13px;
  font-weight:500;
  line-height:1.4;
  color:#D6C8F7;
  background-color:rgba(108,74,182,.2);
  box-shadow:inset 0 0 0 1px rgba(108,74,182,.45);
}

.chip--ice{
  color:#BDF2F2;
  background-color:rgba(62,198,198,.14);
  box-shadow:inset 0 0 0 1px rgba(62,198,198,.4);
}

.chip--gold{
  color:#FFE7A8;
  background-color:rgba(245,197,66,.12);
  box-shadow:inset 0 0 0 1px rgba(245,197,66,.42);
}

/* ---------- 数据状态面板 ---------- */
.stat{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:18px 20px;
  border-radius:var(--radius-md);
  background-color:rgba(42,51,99,.28);
  box-shadow:inset 0 0 0 1px rgba(42,51,99,.7);
}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,34px);
  font-weight:600;
  line-height:1.1;
  color:var(--ice);
}
.stat__label{
  font-size:13px;
  letter-spacing:.1em;
  color:var(--ink-2);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  font-size:13px;
  color:var(--ink-2);
  margin:0 0 26px;
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
}
.breadcrumbs li{
  display:flex;
  align-items:center;
  gap:6px;
}
.breadcrumbs li + li::before{
  content:"/";
  color:var(--line);
}
.breadcrumbs a{color:var(--ink-2);}
.breadcrumbs a:hover{color:var(--ice);}

/* ---------- 正文长文容器 ---------- */
.prose{
  max-width:72ch;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
}
.prose h2{
  font-size:clamp(22px,2.4vw,30px);
  margin:1.8em 0 .6em;
  color:var(--ink);
}
.prose h3{
  font-size:clamp(18px,1.8vw,22px);
  margin:1.5em 0 .5em;
  color:var(--ink);
}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:0;}
.prose li{
  position:relative;
  padding-left:20px;
  margin-bottom:.5em;
}
.prose li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.78em;
  width:7px;
  height:7px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--nebula),var(--ice));
}
.prose blockquote{
  margin:1.6em 0;
  padding:4px 0 4px 20px;
  border-left:3px solid var(--nebula);
  color:var(--ink);
}
.board--paper .prose{color:var(--paper-ink-2);}
.board--paper .prose h2,
.board--paper .prose h3{color:var(--paper-ink);}

/* ---------- 网格 ---------- */
.grid{
  display:grid;
  gap:clamp(20px,3vw,40px);
}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--split{grid-template-columns:minmax(0,1fr) minmax(0,2fr);}

/* ---------- 媒体容器 ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  border-radius:clamp(18px,3vw,32px);
  background-image:linear-gradient(150deg,#1A2350 0%,#141B3C 45%,#0B1026 100%);
  isolation:isolate;
}
.media-frame > img,
.media-frame > picture > img,
.media-frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:auto -20% -60% -20%;
  height:70%;
  background:radial-gradient(closest-side,rgba(108,74,182,.4),transparent 72%);
  pointer-events:none;
}
.media-frame--16x9{aspect-ratio:16 / 9;}
.media-frame--4x3{aspect-ratio:4 / 3;}
.media-frame--1x1{aspect-ratio:1 / 1;}
.media-frame--tall{aspect-ratio:3 / 4;}

.media-frame__slot{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:inherit;
  border:1px dashed rgba(167,177,218,.32);
  font-size:13px;
  letter-spacing:.2em;
  color:rgba(167,177,218,.75);
}

.media-frame__caption{
  margin:12px 0 0;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-2);
}

/* ============================================================
   页头
   ============================================================ */
.skip-link{
  position:absolute;
  left:16px;
  top:-70px;
  z-index:140;
  padding:10px 20px;
  border-radius:var(--radius-pill);
  background-color:var(--gold);
  color:#1A1206;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:hover{color:#1A1206;}
.skip-link:focus{top:14px;}

.sky-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  background-image:linear-gradient(180deg,rgba(11,16,38,.8) 0%,rgba(11,16,38,.34) 58%,rgba(11,16,38,0) 100%);
  transition:background-image .3s var(--ease),box-shadow .3s var(--ease);
}
.sky-header[data-scrolled="true"]{
  background-image:linear-gradient(180deg,rgba(11,16,38,.96) 0%,rgba(11,16,38,.96) 100%);
  box-shadow:inset 0 -1px 0 var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}

.header-shell{
  max-width:var(--shell);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:clamp(14px,2.4vw,34px);
  padding:13px clamp(16px,4vw,40px);
  min-height:var(--header-h);
}

/* 品牌 */
.brand-lockup{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--ink);
}
.brand-lockup:hover{color:var(--ink);}

.brand-orbit{
  position:relative;
  width:34px;
  height:34px;
  border-radius:50%;
  background-image:linear-gradient(135deg,var(--nebula),#3B2A6E);
  box-shadow:inset 0 0 0 1px rgba(237,241,255,.22);
  flex:0 0 auto;
}
.brand-orbit::before{
  content:"";
  position:absolute;
  inset:7px;
  border-radius:50%;
  border:1.5px solid rgba(245,197,66,.65);
  transform:rotate(-24deg) scaleY(.5);
}
.brand-orbit__dot{
  position:absolute;
  right:2px;
  top:5px;
  width:7px;
  height:7px;
  border-radius:50%;
  background-color:var(--gold);
  box-shadow:0 0 12px rgba(245,197,66,.9);
}

.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{
  font-size:19px;
  font-weight:900;
  letter-spacing:.06em;
  color:var(--ink);
}
.brand-sub{
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--ink-2);
  margin-top:2px;
}

/* 移动开关 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:9px 15px;
  border-radius:var(--radius-pill);
  color:var(--ink);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  box-shadow:inset 0 0 0 1px var(--line);
  transition:background-color .2s var(--ease);
}
.nav-toggle:hover{background-color:rgba(108,74,182,.24);}

.nav-toggle__bars{
  position:relative;
  width:18px;
  height:12px;
  flex:0 0 auto;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  border-radius:2px;
  background-color:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle__bars::before{top:2px;}
.nav-toggle__bars::after{top:8px;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-3px) rotate(-45deg);}

/* 主导航 */
.primary-nav{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  min-width:0;
}

.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
}

.nav-list a{
  display:block;
  padding:9px 14px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
  text-decoration:none;
  transition:color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-list a:hover{
  color:var(--ink);
  background-color:rgba(108,74,182,.26);
}
.nav-list a[aria-current="page"]{
  color:var(--ink);
  background-color:rgba(108,74,182,.36);
  box-shadow:inset 0 0 0 1px rgba(108,74,182,.68);
}

.nav-list a.nav-spot{
  color:#FFE7A8;
  box-shadow:inset 0 0 0 1px rgba(245,197,66,.42);
}
.nav-list a.nav-spot:hover{
  color:#FFF4D2;
  background-color:rgba(245,197,66,.16);
}
.nav-list a.nav-spot[aria-current="page"]{
  color:#1A1206;
  background-image:linear-gradient(120deg,#F5C542,#FFD976);
  box-shadow:none;
}

.nav-utility{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:6px;
}

.season-chip{
  display:inline-flex;
  align-items:center;
  padding:7px 13px;
  border-radius:var(--radius-pill);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ice);
  white-space:nowrap;
  box-shadow:inset 0 0 0 1px rgba(62,198,198,.36);
}

/* 滚动进度光带 */
.scroll-progress{
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:2px;
  transform:scaleX(var(--p,0));
  transform-origin:0 50%;
  background-image:linear-gradient(90deg,var(--nebula) 0%,var(--ice) 58%,var(--gold) 100%);
  pointer-events:none;
}

/* ============================================================
   页脚
   ============================================================ */
.sky-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(48px,8vw,120px);
  color:var(--ink-2);
  border-top:1px solid var(--line);
  background-color:#0E1430;
  background-image:
    radial-gradient(120% 90% at 10% 0%,rgba(108,74,182,.38),transparent 62%),
    radial-gradient(90% 70% at 92% 8%,rgba(62,198,198,.16),transparent 64%),
    radial-gradient(70% 60% at 50% 120%,rgba(245,197,66,.1),transparent 70%);
}

.footer-arc{
  position:absolute;
  top:-1px;
  left:50%;
  width:min(1400px,160vw);
  height:280px;
  transform:translateX(-50%);
  border-radius:0 0 50% 50%;
  box-shadow:0 0 0 1px rgba(42,51,99,.85);
  pointer-events:none;
}

.footer-inner{
  position:relative;
  max-width:var(--shell);
  margin:0 auto;
  padding:clamp(48px,7vw,88px) clamp(16px,4vw,40px) 32px;
}

.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,2fr);
  gap:clamp(32px,5vw,80px);
  padding-bottom:clamp(32px,4vw,56px);
}

.footer-brand__name{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:900;
  letter-spacing:.06em;
  color:var(--ink);
  margin:0 0 8px;
}
.footer-brand__line{
  font-size:14px;
  letter-spacing:.1em;
  color:var(--ink-2);
  margin:0 0 18px;
}
.footer-brand__season{
  max-width:34ch;
  font-size:13.5px;
  line-height:1.8;
  color:var(--ink-2);
  margin:0;
  padding-left:14px;
  border-left:2px solid var(--nebula);
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
}

.footer-col__title{
  font-size:13px;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--ice);
  margin:0 0 16px;
}
.footer-col__list li{margin-bottom:10px;}
.footer-col__list a{
  font-size:15px;
  color:var(--ink-2);
  text-decoration:none;
}
.footer-col__list a:hover{color:var(--ink);}

.footer-contact{
  padding:24px 0;
  border-top:1px solid rgba(42,51,99,.8);
}
.footer-contact__line{
  font-size:13.5px;
  line-height:1.9;
  color:var(--ink-2);
  margin:0 0 6px;
}
.footer-contact__line:last-child{margin-bottom:0;}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  padding-top:20px;
  border-top:1px solid rgba(42,51,99,.8);
}
.footer-legal__icp,
.footer-legal__copy{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:rgba(167,177,218,.85);
  margin:0;
}

/* ============================================================
   动效协议
   ============================================================ */
[data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
  will-change:opacity,transform;
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .nav-toggle{display:inline-flex;}

  .primary-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:16px;
    padding:20px clamp(16px,5vw,32px) 30px;
    background-color:rgba(11,16,38,.97);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    box-shadow:inset 0 -1px 0 var(--line),0 30px 60px -34px #000;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .primary-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:none;
  }

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
  }
  .nav-list a{
    padding:13px 16px;
    font-size:17px;
    border-radius:14px;
  }

  .nav-utility{
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    margin-left:0;
  }
  .nav-utility .btn{width:100%;}
  .season-chip{align-self:flex-start;}
}

@media (max-width:980px){
  .footer-top{grid-template-columns:minmax(0,1fr);}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr));}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--split{grid-template-columns:minmax(0,1fr);}
}

@media (max-width:720px){
  body{font-size:16px;}
  :root{--header-h:70px;}

  .brand-name{font-size:17px;}
  .brand-sub{font-size:10.5px;letter-spacing:.08em;}

  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--2,
  .grid--3{grid-template-columns:minmax(0,1fr);}
  .board{padding-left:18px;padding-right:18px;}
}

@media (max-width:480px){
  .footer-cols{grid-template-columns:minmax(0,1fr);}
  .nav-toggle__label{display:none;}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* ============================================================
   可访问性 · 降低动效
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}

  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }

  [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }

  .sky-header{transition:none;}
  .scroll-progress{transition:none;}
}