/* ==========================================================================
   幻影体育汇 · 共享样式 /assets/site.css
   深空靛底 · 电光紫与荧光青索引 · 暖橙只给动作
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
:where(h1,h2,h3,h4,h5,h6){font-family:var(--font-display);font-weight:900;line-height:1.05;letter-spacing:-.02em;font-stretch:92%;text-wrap:balance}

/* ---------- 2. Tokens ---------- */
:root{
  --ink-900:#070B1E;
  --ink-800:#0F1636;
  --ink-700:#182051;
  --line:#2B3470;
  --line-soft:rgba(43,52,112,.62);
  --violet:#7B5CFF;
  --deep-violet:#4A2FB8;
  --cyan:#3DF0D6;
  --orange:#FF8B3D;
  --paper:#EEF1FF;
  --mist:#A7AFD6;
  --maxw:1280px;
  --gutter:clamp(16px,4vw,40px);
  --radius-xl:36px;
  --radius-lg:26px;
  --radius-md:18px;
  --radius-sm:12px;
  --ease:cubic-bezier(.4,0,.2,1);
  --shadow-panel:0 22px 64px rgba(3,5,16,.55);
  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Noto Sans Mono CJK SC",monospace;
}

/* ---------- 3. Base & 中文排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--paper);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(58vw 58vw at 84% -12%,rgba(123,92,255,.26),transparent 62%),
    radial-gradient(46vw 46vw at 2% 6%,rgba(61,240,214,.13),transparent 60%),
    radial-gradient(64vw 44vw at 52% 112%,rgba(74,47,184,.30),transparent 68%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.nav-lock{overflow:hidden}
::selection{background:rgba(123,92,255,.45);color:#fff}
:where(a,button,summary,input,select,textarea,[tabindex]):focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- 4. Layout helpers ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(44px,6vw,88px)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:clamp(20px,3vw,36px)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;opacity:.75}
.mono{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--mist)}
.prose{max-width:68ch;font-size:clamp(15px,1.05vw,17px);line-height:1.8;color:var(--paper)}
.prose p+p{margin-top:1em}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.strip{position:relative;width:100vw;margin-inline:calc(50% - 50vw);padding-block:clamp(22px,3vw,36px);border-block:1px solid var(--line);background:linear-gradient(100deg,rgba(74,47,184,.55),rgba(24,32,81,.28) 46%,rgba(61,240,214,.16));overflow:hidden}
.strip::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(7,11,30,.16) 0 2px,transparent 2px 7px);opacity:.4;pointer-events:none}
.strip>*{position:relative;z-index:1}
.panel{background:linear-gradient(160deg,rgba(24,32,81,.92),rgba(15,22,54,.86));border:1px solid var(--line);border-radius:var(--radius-md);padding:clamp(18px,2.4vw,28px);box-shadow:var(--shadow-panel)}

/* ---------- 5. Buttons & chips ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.45em;min-height:44px;padding:10px 20px;border-radius:999px;border:1px solid transparent;font-family:var(--font-body);font-weight:700;font-size:14px;letter-spacing:.02em;line-height:1.2;transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease)}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--orange);color:var(--ink-900);box-shadow:0 10px 26px rgba(255,139,61,.28)}
.btn--primary:hover{background:#FFA565;box-shadow:0 12px 32px rgba(255,139,61,.42)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--paper)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--violet{background:linear-gradient(120deg,var(--violet),var(--deep-violet));color:#fff;box-shadow:0 10px 26px rgba(123,92,255,.32)}
.btn--violet:hover{filter:brightness(1.09)}
.chip{display:inline-flex;align-items:center;gap:.4em;min-height:38px;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(24,32,81,.62);color:var(--mist);font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}
.chip:hover{color:var(--paper);border-color:var(--violet)}
.chip[aria-pressed="true"],.chip.is-active{background:rgba(61,240,214,.14);border-color:var(--cyan);color:var(--cyan)}

/* ---------- 6. Skip link ---------- */
.skip-link{position:fixed;top:10px;left:10px;z-index:200;transform:translateY(-180%);padding:12px 20px;border-radius:999px;background:var(--cyan);color:var(--ink-900);font-weight:700;font-size:14px;transition:transform .2s var(--ease)}
.skip-link:focus{transform:translateY(0)}

/* ---------- 7. Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:linear-gradient(180deg,rgba(15,22,54,.975) 0%,rgba(9,13,36,.955) 100%);border-bottom:1px solid var(--line)}
.hdr-top{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.hdr-glow{position:absolute;top:-130px;left:-8%;width:min(560px,72vw);height:240px;background:radial-gradient(closest-side,rgba(123,92,255,.55),rgba(61,240,214,.16) 62%,transparent 76%);filter:blur(28px);pointer-events:none;animation:hdr-breathe 9s ease-in-out infinite}
@keyframes hdr-breathe{0%,100%{opacity:.45;transform:translate3d(0,0,0)}50%{opacity:.85;transform:translate3d(26px,10px,0)}}
.hdr-wrap{position:relative;z-index:1;display:flex;align-items:center;gap:clamp(10px,2vw,20px);min-height:72px;padding-block:10px}
.hdr-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(43,52,112,.55);overflow:hidden}
.hdr-progress-bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--violet),var(--cyan) 55%,var(--orange));transition:width .12s linear}

.nav-toggle{flex:0 0 auto;display:inline-grid;place-items:center;width:46px;height:46px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(150deg,rgba(24,32,81,.92),rgba(15,22,54,.92));color:var(--paper);transition:border-color .2s var(--ease),background .2s var(--ease)}
.nav-toggle:hover{border-color:var(--cyan);background:rgba(61,240,214,.10)}
.nav-toggle-bars{display:grid;gap:5px;width:20px}
.nav-toggle-bars .bar{display:block;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--violet));transition:transform .24s var(--ease),opacity .2s var(--ease),width .24s var(--ease)}
.nav-toggle-bars .bar:nth-child(1){width:20px}
.nav-toggle-bars .bar:nth-child(2){width:14px}
.nav-toggle-bars .bar:nth-child(3){width:18px}
.nav-toggle[aria-expanded="true"] .bar:nth-child(1){width:20px;transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .bar:nth-child(3){width:20px;transform:translateY(-7px) rotate(-45deg)}

.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;min-height:44px}
.brand-mark{display:grid;place-items:center;flex:0 0 auto;width:42px;height:42px;border-radius:14px 5px 14px 5px;background:linear-gradient(140deg,var(--violet),var(--cyan) 92%);color:var(--ink-900);font-family:var(--font-display);font-weight:900;font-size:20px;letter-spacing:-.04em;box-shadow:0 8px 22px rgba(123,92,255,.35)}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-family:var(--font-display);font-weight:900;font-size:clamp(16px,1.5vw,19px);line-height:1.25;letter-spacing:.02em;color:var(--paper)}
.brand-sub{font-family:var(--font-mono);font-size:11px;line-height:1.5;letter-spacing:.14em;color:var(--mist);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.hdr-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.sub-status{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:rgba(24,32,81,.55);color:var(--mist);font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease)}
.sub-status:hover{border-color:var(--cyan);color:var(--paper);background:rgba(61,240,214,.10)}
.sub-dot{flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--cyan);animation:dot-pulse 2.6s ease-out infinite}
@keyframes dot-pulse{0%{box-shadow:0 0 0 0 rgba(61,240,214,.55)}70%{box-shadow:0 0 0 9px rgba(61,240,214,0)}100%{box-shadow:0 0 0 0 rgba(61,240,214,0)}}
.sub-label{font-family:var(--font-body);font-size:13px;letter-spacing:.02em;color:var(--paper)}
.sub-meta{color:var(--cyan)}
.btn-switch{white-space:nowrap}

/* ---------- 8. Navigation: 抽屉（默认，全宽度可用） ---------- */
.nav-scrim{position:fixed;inset:0;z-index:85;background:rgba(4,6,18,.68);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity .28s var(--ease)}
.nav-scrim.is-active{opacity:1;pointer-events:auto}

.site-nav{
  position:fixed;top:0;bottom:0;left:0;z-index:90;
  display:flex;flex-direction:column;gap:18px;
  width:min(86vw,360px);
  padding:18px 18px 24px;
  overflow-y:auto;
  overscroll-behavior:contain;
  background:linear-gradient(168deg,var(--ink-800) 0%,var(--ink-900) 58%,#05081A 100%);
  border-right:1px solid var(--line);
  box-shadow:26px 0 70px rgba(3,5,16,.60);
  transform:translate3d(-104%,0,0);
  visibility:hidden;
  transition:transform .28s var(--ease),visibility .28s var(--ease);
}
.site-nav[data-open]{transform:translate3d(0,0,0);visibility:visible}

.nav-head{display:flex;flex-direction:column;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line-soft)}
.nav-head-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.nav-head-title{font-family:var(--font-display);font-weight:900;font-size:17px;letter-spacing:.03em;color:var(--paper)}
.nav-head-desc{font-family:var(--font-mono);font-size:12px;line-height:1.65;letter-spacing:.04em;color:var(--mist)}
.nav-close{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);color:var(--mist);font-size:20px;line-height:1;transition:border-color .2s var(--ease),color .2s var(--ease)}
.nav-close:hover{border-color:var(--orange);color:var(--orange)}

.nav-inner{display:block}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-item{width:100%}
.nav-link{position:relative;display:flex;align-items:center;gap:12px;width:100%;min-height:48px;padding:12px;border-radius:12px;color:var(--mist);font-size:15px;font-weight:600;letter-spacing:.02em;transition:color .2s var(--ease),background .2s var(--ease)}
.nav-num{flex:0 0 auto;min-width:22px;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--violet);transition:color .2s var(--ease)}
.nav-label{display:inline-block}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--violet));transform:scaleX(0);transform-origin:left center;transition:transform .24s var(--ease)}
.nav-link:hover{color:var(--paper);background:rgba(123,92,255,.13)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--paper);background:linear-gradient(100deg,rgba(123,92,255,.24),rgba(61,240,214,.07))}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"] .nav-num{color:var(--cyan)}

.nav-foot{margin-top:auto;display:flex;flex-direction:column;gap:8px;padding-top:16px;border-top:1px solid var(--line-soft)}
.nav-foot-text{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--mist)}
.nav-foot-link{display:inline-flex;align-items:center;min-height:44px;font-size:14px;font-weight:700;color:var(--orange);transition:color .2s var(--ease)}
.nav-foot-link:hover{color:#FFA565}

/* ---------- 9. Navigation: 桌面横轨 ---------- */
@media (min-width:861px){
  .site-nav{
    position:static;width:auto;
    display:block;
    padding:0;
    overflow:visible;
    transform:none;visibility:visible;
    border-right:0;
    border-top:1px solid var(--line-soft);
    box-shadow:none;
    background:linear-gradient(180deg,rgba(24,32,81,.52),rgba(7,11,30,0));
  }
  .nav-head,.nav-foot{display:none}
  .nav-inner{display:block;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
  .nav-list{flex-direction:row;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
  .nav-list::-webkit-scrollbar{display:none}
  .nav-item{width:auto}
  .nav-link{width:auto;min-height:52px;padding:14px 12px;border-radius:10px 10px 0 0;font-size:14.5px}
  .nav-link::after{left:12px;right:12px;bottom:8px}
  .nav-link[aria-current="page"]{background:linear-gradient(180deg,rgba(123,92,255,.20),rgba(123,92,255,0))}

  /* 桌面端打开目录：同一元素回落为侧滑面板 */
  .site-nav[data-open]{
    position:fixed;top:0;bottom:0;left:0;z-index:90;
    width:min(88vw,384px);
    display:flex;flex-direction:column;
    padding:18px 18px 24px;
    overflow-y:auto;
    background:linear-gradient(168deg,var(--ink-800) 0%,var(--ink-900) 58%,#05081A 100%);
    border-top:0;
    border-right:1px solid var(--line);
    box-shadow:26px 0 70px rgba(3,5,16,.60);
  }
  .site-nav[data-open] .nav-head,
  .site-nav[data-open] .nav-foot{display:flex}
  .site-nav[data-open] .nav-inner{max-width:none;margin:0;padding:0}
  .site-nav[data-open] .nav-list{flex-direction:column;align-items:stretch;gap:4px;overflow:visible}
  .site-nav[data-open] .nav-item{width:100%}
  .site-nav[data-open] .nav-link{width:100%;min-height:48px;padding:12px;border-radius:12px;font-size:15px}
  .site-nav[data-open] .nav-link::after{left:12px;right:12px;bottom:6px}
}

/* ---------- 10. Footer ---------- */
.site-footer{position:relative;margin-top:clamp(48px,8vw,110px);border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(15,22,54,.96),#05081A 72%);overflow:hidden}
.ft-glow{position:absolute;top:-170px;right:-70px;width:min(620px,84vw);height:340px;background:radial-gradient(closest-side,rgba(74,47,184,.52),rgba(61,240,214,.10) 65%,transparent 78%);filter:blur(30px);pointer-events:none}
.ft-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr 1fr 1.15fr .95fr;gap:clamp(24px,4vw,48px);padding-block:clamp(40px,6vw,72px)}
.ft-block{display:flex;flex-direction:column;gap:14px;min-width:0}
.ft-brand{gap:16px}
.ft-logo{display:inline-flex;align-items:center;gap:12px;min-height:44px}
.ft-mark{display:grid;place-items:center;flex:0 0 auto;width:40px;height:40px;border-radius:13px 4px 13px 4px;background:linear-gradient(140deg,var(--violet),var(--cyan));color:var(--ink-900);font-family:var(--font-display);font-weight:900;font-size:19px;letter-spacing:-.04em}
.ft-name{font-family:var(--font-display);font-weight:900;font-size:18px;letter-spacing:.03em;color:var(--paper)}
.ft-tagline{max-width:32ch;font-size:14px;line-height:1.75;color:var(--mist)}
.ft-meta{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--mist)}
.ft-dot{flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px rgba(61,240,214,.9)}
.ft-title{font-family:var(--font-mono);font-size:11.5px;font-weight:600;line-height:1.6;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
.ft-list{display:flex;flex-direction:column;gap:2px}
.ft-list--split{display:grid;grid-template-columns:1fr 1fr;gap:2px 16px}
.ft-link{display:inline-flex;align-items:center;min-height:40px;font-size:14px;color:var(--mist);transition:color .2s var(--ease),transform .2s var(--ease)}
.ft-link:hover{color:var(--paper);transform:translateX(3px)}
.ft-contact{display:flex;flex-direction:column;gap:4px}
.ft-contact-item{display:flex;align-items:baseline;gap:10px;font-size:14px;line-height:1.65}
.ft-key{flex:0 0 auto;min-width:34px;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--violet)}
.ft-val{color:var(--paper);overflow-wrap:anywhere}
.ft-note{max-width:34ch;font-size:12.5px;line-height:1.75;color:var(--mist)}
.ft-legal{border-left:1px solid var(--line-soft);padding-left:clamp(0px,2vw,28px)}
.ft-copy,.ft-icp{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--mist)}

/* ---------- 11. Breadcrumbs ---------- */
.crumbs{padding-block:14px 0}
.crumbs-list{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--mist)}
.crumbs-item{display:inline-flex;align-items:center;gap:6px;min-height:32px}
.crumbs-item+.crumbs-item::before{content:"/";color:var(--line);margin-right:2px}
.crumbs-link{color:var(--mist);transition:color .2s var(--ease)}
.crumbs-link:hover{color:var(--cyan)}
.crumbs-item [aria-current="page"]{color:var(--paper)}

/* ---------- 12. 可复用图片容器 ---------- */
.media-frame{position:relative;overflow:hidden;isolation:isolate;border-radius:var(--radius-md);border:1px solid var(--line);background:linear-gradient(150deg,var(--ink-700),var(--ink-900))}
.media-frame img,.media-frame video{width:100%;height:100%;object-fit:cover}
.media-frame::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;background:radial-gradient(120% 90% at 82% 0%,rgba(123,92,255,.30),transparent 58%),linear-gradient(180deg,transparent 45%,rgba(7,11,30,.70))}
.media-16x9{aspect-ratio:16/9}
.media-4x3{aspect-ratio:4/3}
.media-1x1{aspect-ratio:1/1}
.media-3x4{aspect-ratio:3/4}
.media-frame--ph{display:grid;place-items:center;min-height:160px;color:var(--mist);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;background-image:repeating-linear-gradient(135deg,rgba(43,52,112,.40) 0 1px,transparent 1px 12px),linear-gradient(150deg,var(--ink-700),var(--ink-900))}
.media-caption{margin-top:10px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;line-height:1.6;color:var(--mist)}

/* ---------- 13. 显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1024px){
  .ft-grid{grid-template-columns:1fr 1fr}
  .ft-legal{border-left:0;padding-left:0}
}
@media (max-width:900px){
  .sub-meta{display:none}
}
@media (max-width:760px){
  .brand-sub{display:none}
  .hdr-wrap{min-height:64px;gap:10px}
  .brand-mark{width:38px;height:38px;font-size:18px;border-radius:12px 4px 12px 4px}
  .nav-toggle{width:44px;height:44px}
}
@media (max-width:640px){
  .ft-grid{grid-template-columns:1fr;gap:26px}
  .ft-list--split{grid-template-columns:1fr 1fr}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
}
@media (max-width:520px){
  .sub-status{width:44px;padding:0;justify-content:center;gap:0}
  .sub-label{display:none}
  .btn-switch{padding:10px 14px;font-size:13.5px}
  .brand-name{font-size:15px}
  .hdr-actions{gap:8px}
}

/* ---------- 15. 动效偏好 ---------- */
@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}
  .hdr-glow{animation:none}
  .sub-dot{animation:none}
}