/* ============================================================
   /assets/site.css — 九州体育官网 共享外壳
   夜间赛事指挥台：深空底 / 信号橙 / 数据青绿 / 刻度黄
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root{
  --ink:#060A12;
  --panel:#0D1624;
  --raise:#152235;
  --white:#F4F7FB;
  --muted:#A8B4C7;
  --orange:#FF6B2C;
  --mint:#2FD6B5;
  --amber:#F6C445;
  --steel:#26364D;
  --focus:#7BE7FF;
  --error:#FF5A6A;

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-data:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",Consolas,monospace;

  --shell:1240px;
  --gutter:clamp(16px,4vw,40px);
  --rail-h:38px;
  --bar-h:66px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --cut:10px;
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-display);
  font-size:1rem;
  font-weight:400;
  line-height:1.7;
  color:var(--white);
  background-color:var(--ink);
  background-image:
    linear-gradient(180deg,rgba(13,22,36,.88) 0,rgba(6,10,18,0) 540px),
    repeating-linear-gradient(90deg,rgba(38,54,77,.18) 0 1px,transparent 1px 96px);
  background-repeat:no-repeat,repeat;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{display:block;max-width:100%;height:auto;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.16;letter-spacing:-.01em;}
p{margin:0;}
a{color:inherit;}
ul,ol{margin:0;padding:0;}
button{font:inherit;color:inherit;}
::selection{background:var(--orange);color:#0A0E15;}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;}
:focus:not(:focus-visible){outline:none;}

/* ---------- 3. 通用布局 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.site-main{display:block;padding-block:0 clamp(40px,6vw,72px);}

.section{padding-block:clamp(32px,5vw,64px);border-top:1px solid var(--steel);}
.section--tight{padding-block:clamp(22px,3vw,36px);}
.section__head{
  display:flex;flex-wrap:wrap;align-items:baseline;
  gap:10px 18px;margin-bottom:clamp(18px,2.4vw,28px);
}
.eyebrow{
  font-family:var(--font-data);font-size:11.5px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--orange);
}
.section__title{font-size:clamp(26px,3.4vw,40px);}
.section__lead{margin-top:10px;max-width:62ch;color:var(--muted);font-size:clamp(15px,1.3vw,17px);}

.grid{display:grid;gap:clamp(14px,2vw,24px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr);}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr);}

.rule{height:1px;border:0;margin:0;background:var(--steel);}
.num{font-family:var(--font-data);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- 4. skip link ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:300;
  padding:10px 16px;
  background:var(--orange);color:#0A0E15;
  font-family:var(--font-data);font-size:13px;letter-spacing:.06em;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0);}

/* ---------- 5. header ---------- */
.site-header{position:sticky;top:0;z-index:100;}

/* 5.1 上层控制条 */
.header-rail{
  max-height:72px;opacity:1;overflow:hidden;
  background:var(--panel);
  border-bottom:1px solid var(--steel);
  transition:max-height .28s var(--ease),opacity .2s var(--ease),border-color .2s var(--ease);
}
.header-rail__inner{
  display:flex;align-items:center;
  gap:clamp(12px,2vw,28px);
  min-height:var(--rail-h);
}
.header-rail__brandline{
  flex:1 1 auto;min-width:0;
  color:#C4D0E1;font-size:12.5px;letter-spacing:.03em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.header-rail__meta{flex:0 0 auto;display:flex;align-items:center;}
.ticker{
  display:inline-flex;align-items:center;gap:8px;
  padding:3px 10px;
  border:1px solid var(--steel);
  background:rgba(21,34,53,.6);
  font-family:var(--font-data);font-size:11px;letter-spacing:.08em;color:var(--muted);
  white-space:nowrap;
}
.ticker__dot{
  width:6px;height:6px;flex:0 0 auto;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 3px rgba(47,214,181,.16);
}
.ticker__code{margin-left:6px;color:var(--amber);font-weight:600;}
.header-rail__tools{flex:0 0 auto;display:flex;align-items:center;gap:8px;}

.tool-btn{
  display:inline-flex;align-items:center;
  padding:4px 10px;
  background:transparent;
  border:1px solid var(--steel);
  color:var(--muted);
  font-family:var(--font-data);font-size:11px;letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
}
.tool-btn b{margin-left:6px;font-weight:600;color:var(--white);}
.tool-btn:hover{border-color:var(--orange);color:var(--white);background:rgba(255,107,44,.08);}
.cta-ghost{
  display:inline-flex;align-items:center;
  padding:4px 10px;
  border:1px solid rgba(47,214,181,.42);
  color:var(--mint);
  font-family:var(--font-data);font-size:11px;letter-spacing:.08em;
  text-decoration:none;
  transition:background .16s var(--ease),color .16s var(--ease);
}
.cta-ghost:hover{background:rgba(47,214,181,.14);color:#C6FFF2;}

/* 5.2 下层栏目条 */
.header-bar{
  position:relative;
  background:rgba(13,22,36,.96);
  border-bottom:1px solid var(--steel);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:box-shadow .24s var(--ease);
}
.header-bar__inner{
  display:flex;align-items:center;
  gap:clamp(10px,1.8vw,24px);
  min-height:var(--bar-h);
}
.site-header.is-scrolled .header-rail{max-height:0;opacity:0;border-bottom-color:transparent;}
.site-header.is-scrolled .header-bar{box-shadow:0 12px 30px rgba(2,6,12,.6);}

.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand__mark{
  position:relative;
  display:grid;place-items:center;
  width:34px;height:34px;
  border:1px solid rgba(255,107,44,.65);
  background:rgba(255,107,44,.10);
  color:var(--orange);
  font-family:var(--font-data);font-size:12.5px;font-weight:600;letter-spacing:.06em;
}
.brand__mark::after{
  content:"";position:absolute;right:-2px;bottom:-2px;
  width:6px;height:6px;background:var(--amber);
}
.brand__text strong{display:block;font-size:16px;font-weight:800;letter-spacing:.04em;line-height:1.2;}
.brand__text em{
  display:block;font-style:normal;
  font-family:var(--font-data);font-size:10.5px;letter-spacing:.1em;color:var(--muted);
  line-height:1.5;
}

.primary-nav{margin-left:auto;}
.primary-nav__list{
  display:flex;align-items:center;gap:2px;
  list-style:none;counter-reset:nav;
}
.primary-nav__link{
  position:relative;
  display:flex;align-items:center;gap:7px;
  padding:12px 12px;
  color:#C6D2E2;font-size:14.5px;text-decoration:none;
  transition:color .16s var(--ease);
}
.primary-nav__link::before{
  counter-increment:nav;
  content:"0" counter(nav);
  font-family:var(--font-data);font-size:10px;letter-spacing:.04em;
  color:#4E5D76;
  transform:translateY(-1px);
  transition:color .16s var(--ease);
}
.primary-nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--orange);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.primary-nav__link:hover{color:var(--white);}
.primary-nav__link:hover::before{color:var(--orange);}
.primary-nav__link:hover::after{transform:scaleX(1);}
.primary-nav__link[aria-current="page"]{color:var(--white);}
.primary-nav__link[aria-current="page"]::before{color:var(--orange);}
.primary-nav__link[aria-current="page"]::after{transform:scaleX(1);}

.cta{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  padding:10px 20px;
  background:var(--orange);color:#0A0E15;
  font-size:14px;font-weight:700;letter-spacing:.02em;text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
  transition:background .16s var(--ease),transform .16s var(--ease);
}
.cta:hover{background:#FF8447;transform:translateY(-1px);}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 11px;
  background:transparent;
  border:1px solid var(--steel);
  color:var(--white);
  font-family:var(--font-data);font-size:11px;letter-spacing:.1em;
  cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange);}
.nav-toggle__bars{display:grid;gap:3px;width:16px;}
.nav-toggle__bars i{
  display:block;height:2px;background:currentColor;
  transition:transform .2s var(--ease),opacity .16s var(--ease);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--orange);color:var(--orange);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.nav-toggle__label{white-space:nowrap;}

/* 5.3 快速跳转索引 */
.quick-jump{
  position:absolute;left:0;right:0;top:100%;z-index:6;
  background:#0A1220;
  border-bottom:1px solid var(--steel);
  box-shadow:0 28px 48px rgba(2,5,10,.72);
}
.quick-jump[hidden]{display:none;}
.quick-jump__head{
  padding-top:16px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.18em;
  color:var(--mint);
}
.quick-jump__grid{
  list-style:none;counter-reset:qj;
  padding-block:14px 22px;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:8px;
}
.quick-jump__link{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;
  border:1px solid var(--steel);
  background:rgba(21,34,53,.6);
  color:#DCE4EF;font-size:14px;text-decoration:none;
  transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
}
.quick-jump__link::before{
  counter-increment:qj;
  content:"0" counter(qj);
  font-family:var(--font-data);font-size:10.5px;color:#54637C;
  transition:color .16s var(--ease);
}
.quick-jump__link:hover,
.quick-jump__link[aria-current="page"]{
  border-color:rgba(255,107,44,.7);
  background:rgba(255,107,44,.10);
  color:var(--white);
}
.quick-jump__link:hover::before,
.quick-jump__link[aria-current="page"]::before{color:var(--orange);}

/* 5.4 阅读进度 */
.read-progress{
  position:absolute;left:0;right:0;bottom:-1px;
  height:2px;overflow:hidden;
  background:rgba(38,54,77,.6);
}
.read-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--orange),var(--amber));
  transition:width .1s linear;
}

/* ---------- 6. footer ---------- */
.site-footer{
  position:relative;
  background:var(--panel);
  border-top:1px solid var(--steel);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--orange) 0,var(--amber) 38%,var(--mint) 100%);
}
.footer-top{padding-block:clamp(36px,6vw,64px) clamp(28px,4vw,40px);}
.footer-top__inner{
  display:grid;
  grid-template-columns:minmax(220px,1fr) minmax(0,2.5fr);
  gap:clamp(24px,4vw,56px);
}
.footer-brand__link{display:flex;align-items:center;gap:10px;text-decoration:none;}
.footer-brand__mark{
  display:grid;place-items:center;
  width:30px;height:30px;
  border:1px solid rgba(255,107,44,.65);
  background:rgba(255,107,44,.10);
  color:var(--orange);
  font-family:var(--font-data);font-size:11.5px;font-weight:600;letter-spacing:.06em;
}
.footer-brand__name{font-size:19px;font-weight:800;letter-spacing:.04em;color:var(--white);}
.footer-brand__tagline{margin-top:14px;max-width:22ch;color:var(--muted);font-size:14px;line-height:1.65;}
.footer-brand__domain{
  margin-top:10px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.1em;color:#6E7E97;
}

.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,32px);}
.footer-col__title{
  margin-bottom:14px;padding-bottom:10px;
  border-bottom:1px solid var(--steel);
  font-family:var(--font-data);font-size:11px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--mint);
}
.footer-list{list-style:none;display:grid;gap:9px;}
.footer-list--contact li{
  font-family:var(--font-data);font-size:12.5px;line-height:1.7;
  letter-spacing:.01em;color:#B7C3D6;word-break:break-word;
}
.footer-hint{
  font-family:var(--font-display) !important;
  font-size:13px !important;
  color:var(--muted) !important;
  line-height:1.65 !important;
}
.footer-link{
  display:inline-block;
  color:#C6D2E2;font-size:14.5px;text-decoration:none;
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.footer-link:hover{color:var(--orange);transform:translateX(2px);}

.footer-bottom{border-top:1px solid var(--steel);padding-block:18px 26px;}
.footer-bottom__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:8px 24px;
  font-family:var(--font-data);font-size:12px;letter-spacing:.04em;color:#8794A9;
}
.footer-legal{color:var(--white);}
.footer-note{margin:0;}

/* ---------- 7. 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;
  border:1px solid transparent;
  font-family:var(--font-display);font-size:14.5px;font-weight:700;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.btn--primary{
  background:var(--orange);color:#0A0E15;
  clip-path:polygon(0 0,100% 0,100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.btn--primary:hover{background:#FF8447;transform:translateY(-1px);}
.btn--ghost{background:transparent;border-color:var(--steel);color:var(--white);}
.btn--ghost:hover{border-color:var(--mint);color:var(--mint);}
.btn--mint{background:var(--mint);color:#04140F;}
.btn--mint:hover{background:#5EE7CB;transform:translateY(-1px);}

/* ---------- 8. 标签色块 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;
  border:1px solid var(--steel);
  background:rgba(21,34,53,.65);
  color:var(--muted);
  font-family:var(--font-data);font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  white-space:nowrap;
}
.tag--orange{color:var(--orange);border-color:rgba(255,107,44,.45);background:rgba(255,107,44,.10);}
.tag--mint{color:var(--mint);border-color:rgba(47,214,181,.42);background:rgba(47,214,181,.10);}
.tag--amber{color:var(--amber);border-color:rgba(246,196,69,.42);background:rgba(246,196,69,.10);}

/* ---------- 9. 面板 ---------- */
.panel{
  background:var(--raise);
  border:1px solid var(--steel);
  padding:clamp(16px,2.4vw,26px);
}
.panel__label{
  display:block;margin-bottom:10px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb{margin-bottom:clamp(14px,2vw,22px);}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;
  font-family:var(--font-data);font-size:11.5px;letter-spacing:.08em;color:var(--muted);
}
.breadcrumb__list li{display:flex;align-items:center;gap:8px;}
.breadcrumb__list li+li::before{content:"/";color:var(--steel);}
.breadcrumb__link{color:var(--muted);text-decoration:none;transition:color .16s var(--ease);}
.breadcrumb__link:hover{color:var(--mint);}
.breadcrumb__list [aria-current="page"]{color:var(--white);}

/* ---------- 11. 正文 ---------- */
.prose{max-width:68ch;color:#DCE4EF;font-size:clamp(15.5px,1.3vw,17px);}
.prose > * + *{margin-top:1.05em;}
.prose p{margin:0;}
.prose h2{font-size:clamp(22px,2.4vw,30px);margin-top:1.8em;}
.prose h3{font-size:clamp(18px,1.8vw,22px);margin-top:1.5em;}
.prose a{color:var(--mint);text-underline-offset:3px;}
.prose ul,.prose ol{padding-left:1.25em;}
.prose li+li{margin-top:.4em;}
.prose strong{color:var(--white);}
.prose code{
  font-family:var(--font-data);font-size:.92em;
  padding:.1em .4em;border:1px solid var(--steel);background:rgba(21,34,53,.8);
}

/* ---------- 12. 图框（供页面阶段放图） ---------- */
.media-frame{
  position:relative;display:block;margin:0;
  aspect-ratio:16/9;
  background:var(--raise);
  border:1px solid var(--steel);
  overflow:hidden;
}
.media-frame::before{
  content:"";position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(90deg,rgba(47,214,181,.16) 0 1px,transparent 1px 30px),
    repeating-linear-gradient(0deg,rgba(38,54,77,.55) 0 1px,transparent 1px 30px),
    linear-gradient(135deg,rgba(255,107,44,.16),rgba(6,10,18,0) 58%);
}
.media-frame__img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;}
.media-frame__caption{
  position:absolute;left:0;bottom:0;z-index:2;
  padding:6px 10px;
  border-top:1px solid var(--steel);border-right:1px solid var(--steel);
  background:rgba(6,10,18,.86);
  font-family:var(--font-data);font-size:11px;letter-spacing:.08em;color:var(--muted);
}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--tall{aspect-ratio:4/5;}

/* ---------- 13. 复制按钮 ---------- */
.copy-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;
  border:1px solid var(--steel);background:rgba(21,34,53,.7);
  color:var(--muted);
  font-family:var(--font-data);font-size:11px;letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
}
.copy-btn:hover{border-color:var(--mint);color:var(--mint);}
.copy-btn.is-copied{border-color:var(--mint);color:#04140F;background:var(--mint);}

/* ---------- 14. 滚动显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-revealed{opacity:1;transform:none;}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1080px){
  .header-rail__meta{display:none;}
  .footer-top__inner{grid-template-columns:1fr;}
}

@media (max-width:960px){
  .grid--7-5,.grid--5-7{grid-template-columns:1fr;}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .quick-jump__grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:920px){
  :root{--bar-h:60px;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .cta{padding:8px 14px;font-size:13px;}
  .primary-nav{
    position:absolute;left:0;right:0;top:100%;z-index:7;
    display:none;
    margin-left:0;
    background:var(--panel);
    border-bottom:1px solid var(--steel);
    box-shadow:0 26px 44px rgba(2,6,12,.7);
    padding:6px var(--gutter) 18px;
    max-height:72vh;overflow-y:auto;
  }
  .primary-nav[data-open="true"]{display:block;}
  .primary-nav__list{flex-direction:column;align-items:stretch;gap:0;}
  .primary-nav__link{
    padding:14px 2px;
    border-bottom:1px solid rgba(38,54,77,.75);
    font-size:15.5px;
  }
  .primary-nav__link::after{left:2px;right:2px;bottom:0;}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-list--contact{grid-column:1/-1;}
}

@media (max-width:720px){
  .grid--2,.grid--3{grid-template-columns:1fr;}
  .header-rail__brandline{font-size:11.5px;}
  .brand__text em{display:none;}
  .section__head{gap:8px 12px;}
  .footer-bottom__inner{flex-direction:column;align-items:flex-start;}
}

@media (max-width:560px){
  .grid--7-5{grid-template-columns:1fr;}
  .quick-jump__grid{grid-template-columns:1fr;}
  .header-rail__tools .cta-ghost{display:none;}
  .cta{display:none;}
  .footer-cols{grid-template-columns:1fr;}
  .brand__mark{width:30px;height:30px;font-size:11.5px;}
  .brand__text strong{font-size:15px;}
}

/* ---------- 16. 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 !important;transform:none !important;}
  .cta:hover,.btn--primary:hover,.btn--mint:hover,.footer-link:hover{transform:none;}
}