/* ============================================================
   博澳赛场 — 共享外壳样式 /assets/site.css
   夜场赛场 + 数据指挥台：墨绿底、荧光青数据、琥珀行动、奶油纸层
   ============================================================ */

:root{
  /* 色彩 */
  --ink-deep:#0B1F1A;
  --ink-black:#141518;
  --ink-panel:#12332B;
  --paper:#F4EEDF;
  --paper-soft:#EFE7D4;
  --print:#241A14;
  --cyan:#35F2D0;
  --amber:#F5A623;
  --amber-hi:#FFC15C;
  --orange:#E2703A;
  --grid-line:#2E6F6A;
  --muted:#A9B4AE;
  --body-ink:#C7D0CB;
  --faint:#7E8C86;

  --line-soft:rgba(169,180,174,.24);
  --line-cyan:rgba(53,242,208,.30);
  --glass:rgba(20,21,24,.74);

  /* 字体 */
  --font-display:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:var(--font-display);
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  /* 字号阶梯 12 / 13 / 16 / 20 / 28 / 40 / 64 / 88 */
  --fs-12:12px;
  --fs-13:13px;
  --fs-16:16px;
  --fs-20:20px;
  --fs-28:clamp(22px,2.4vw,28px);
  --fs-40:clamp(28px,3.6vw,40px);
  --fs-64:clamp(36px,5.6vw,64px);
  --fs-88:clamp(42px,7.6vw,88px);

  /* 布局 */
  --wrap:1280px;
  --gap:24px;
  --pad:clamp(18px,3vw,28px);
  --radius:20px;
  --radius-lg:28px;
  --header-h:78px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,figure,blockquote,dl,dd,h1,h2,h3,h4,h5,h6,p,pre{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit}
table{border-collapse:collapse;width:100%}

/* ---------- 基础排版 ---------- */
body{
  min-height:100vh;
  overflow-x:hidden;
  background-color:var(--ink-deep);
  background-image:
    radial-gradient(900px 520px at 8% -8%, rgba(53,242,208,.10), transparent 62%),
    radial-gradient(760px 460px at 96% 0%, rgba(245,166,35,.085), transparent 60%),
    repeating-linear-gradient(90deg, rgba(46,111,106,.13) 0 1px, transparent 1px 120px);
  background-repeat:no-repeat,no-repeat,repeat;
  color:var(--body-ink);
  font-family:var(--font-body);
  font-size:var(--fs-16);
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

h1,h2,h3,h4,h5{color:var(--paper);font-weight:800;line-height:1.18;letter-spacing:-.012em}
h1{font-size:var(--fs-64)}
h2{font-size:var(--fs-40)}
h3{font-size:var(--fs-28)}
h4{font-size:var(--fs-20)}
p{max-width:38em}
strong{color:var(--paper);font-weight:700}
small{font-size:var(--fs-13)}

.display-xl{font-size:var(--fs-88);line-height:1.02;letter-spacing:-.03em;font-weight:900;color:var(--paper)}
.display-l{font-size:var(--fs-64);line-height:1.06;letter-spacing:-.024em;font-weight:900;color:var(--paper)}
.display-m{font-size:var(--fs-40);line-height:1.12;font-weight:800;color:var(--paper)}
.lead{font-size:var(--fs-20);line-height:1.68;color:var(--body-ink);max-width:34em}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.num{display:inline-block;font-family:var(--font-mono);font-weight:600;letter-spacing:-.02em;color:var(--cyan)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:var(--fs-13);
  letter-spacing:.2em;color:var(--cyan);text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.75}
.eyebrow-v{
  writing-mode:vertical-rl;text-orientation:mixed;
  font-family:var(--font-mono);font-size:var(--fs-12);
  letter-spacing:.34em;color:var(--grid-line);
}

/* ---------- 跳转链 ---------- */
.skip-link{
  position:fixed;top:10px;left:50%;z-index:200;
  transform:translate(-50%,-180%);
  padding:10px 20px;border-radius:999px;
  background:var(--cyan);color:#052A24;
  font-size:14px;font-weight:700;text-decoration:none;
  box-shadow:0 12px 28px rgba(0,0,0,.5);
  transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translate(-50%,0)}

/* ---------- 焦点 ---------- */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.paper :focus-visible{outline-color:#0B4F43}

/* ---------- 阅读进度 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:80;
  background:rgba(169,180,174,.10);pointer-events:none;
}
.scroll-progress > span{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
  transition:transform .08s linear;
}

/* ---------- 头部：悬浮胶囊浮岛 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:70;
  padding:14px clamp(10px,2.4vw,26px) 0;
  pointer-events:none;
}
.header-rail{
  pointer-events:auto;
  position:relative;
  display:flex;align-items:center;
  gap:clamp(10px,1.6vw,22px);
  width:100%;max-width:var(--wrap);margin:0 auto;
  padding:9px 10px 9px 16px;
  border-radius:999px;
  background:linear-gradient(180deg,rgba(18,51,43,.94),rgba(20,21,24,.90));
  border:1px solid var(--line-cyan);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  box-shadow:0 20px 44px rgba(0,0,0,.44),inset 0 1px 0 rgba(244,238,223,.07);
}

.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;text-decoration:none;color:var(--paper)}
.brand-mark{display:inline-grid;grid-template-columns:repeat(3,4px);gap:3px;align-items:end;height:26px}
.brand-mark i{display:block;border-radius:2px;background:var(--cyan)}
.brand-mark i:nth-child(1){height:10px;background:var(--grid-line)}
.brand-mark i:nth-child(2){height:18px}
.brand-mark i:nth-child(3){height:26px;background:var(--amber)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:900;letter-spacing:.05em;color:var(--paper)}
.brand-tag{margin-top:3px;font-size:11px;letter-spacing:.15em;color:var(--muted)}

.site-nav{display:flex;flex:1 1 auto;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:center;gap:clamp(2px,1vw,14px);flex-wrap:nowrap}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 6px;font-size:14.5px;font-weight:600;
  color:var(--paper);text-decoration:none;white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:6px;right:6px;bottom:3px;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .24s var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--cyan)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.nav-quick{display:none}
.nav-quick-link{
  display:flex;align-items:center;justify-content:center;
  padding:10px 12px;border-radius:12px;
  border:1px solid var(--line-soft);
  font-size:13.5px;font-weight:700;color:var(--paper);text-decoration:none;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.nav-quick-link:hover,.nav-quick-link:focus-visible{color:var(--cyan);border-color:var(--cyan);background:rgba(53,242,208,.08)}

.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;padding:0;border-radius:999px;
  border:1px solid var(--line-cyan);
  background:rgba(53,242,208,.08);color:var(--cyan);cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(53,242,208,.18)}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  display:block;width:16px;height:2px;border-radius:2px;background:currentColor;
  transition:transform .22s var(--ease),background .18s var(--ease),opacity .18s var(--ease);
}
.nav-toggle-bars{position:relative}
.nav-toggle-bars::before,.nav-toggle-bars::after{content:"";position:absolute;left:0}
.nav-toggle-bars::before{top:-5px}
.nav-toggle-bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border-radius:999px;border:1px solid transparent;
  font-size:14.5px;font-weight:700;line-height:1.2;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:7px 14px;font-size:13px}
.btn-solid{background:var(--amber);color:#1B1206;border-color:var(--amber)}
.btn-solid:hover,.btn-solid:focus-visible{background:var(--amber-hi);border-color:var(--amber-hi);color:#1B1206}
.btn-cyan{background:var(--cyan);color:#052A24;border-color:var(--cyan)}
.btn-cyan:hover,.btn-cyan:focus-visible{background:#6FF8DF;border-color:#6FF8DF}
.btn-ghost{background:rgba(244,238,223,.04);color:var(--paper);border-color:var(--line-soft)}
.btn-ghost:hover,.btn-ghost:focus-visible{color:var(--cyan);border-color:var(--cyan);background:rgba(53,242,208,.10)}
.btn-paper{background:var(--paper);color:var(--print);border-color:var(--paper)}
.btn-paper:hover,.btn-paper:focus-visible{background:#FFFFFF;border-color:#FFFFFF;color:var(--print)}

/* ---------- 容器 / 网格 ---------- */
#main-content{padding-top:calc(var(--header-h) + 24px);scroll-margin-top:calc(var(--header-h) + 32px)}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.section{padding-block:clamp(38px,6vw,84px)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:clamp(20px,3vw,34px);
}
.stack{display:grid;gap:clamp(14px,2vw,22px)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.rule{height:1px;border:0;margin:0;background:linear-gradient(90deg,var(--line-cyan),rgba(53,242,208,0) 88%)}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

/* ---------- 面包屑 ---------- */
.crumbs{padding-bottom:16px;font-family:var(--font-mono);font-size:var(--fs-13);letter-spacing:.06em;color:var(--faint)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:var(--grid-line)}
.crumbs a{color:var(--muted);text-decoration:none;border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.crumbs a:hover,.crumbs a:focus-visible{color:var(--cyan);border-bottom-color:rgba(53,242,208,.45)}
.crumbs [aria-current="page"]{color:var(--paper)}

/* ---------- 徽标 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;border:1px solid transparent;
  font-size:var(--fs-12);font-weight:700;letter-spacing:.08em;white-space:nowrap;
}
.tag-cyan{background:rgba(53,242,208,.14);color:var(--cyan);border-color:rgba(53,242,208,.42)}
.tag-amber{background:rgba(245,166,35,.16);color:var(--amber);border-color:rgba(245,166,35,.44)}
.tag-line{background:transparent;color:var(--muted);border-color:var(--line-soft)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  border-radius:var(--radius);
  border:1px solid rgba(53,242,208,.16);
  background:linear-gradient(180deg,rgba(18,51,43,.94),rgba(16,34,30,.94));
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--cyan);box-shadow:0 18px 34px rgba(0,0,0,.42)}
.card-title{margin-bottom:6px;font-size:var(--fs-20);font-weight:800;color:var(--paper)}
.card-body{font-size:15.5px;line-height:1.7;color:var(--muted);max-width:36em}

/* ---------- 奶油纸层 ---------- */
.paper{
  padding:clamp(22px,3vw,40px);
  border-radius:var(--radius-lg);
  border:1px solid rgba(36,26,20,.14);
  background:linear-gradient(180deg,var(--paper),var(--paper-soft));
  color:var(--print);
  box-shadow:0 22px 46px rgba(0,0,0,.34);
}
.paper h1,.paper h2,.paper h3,.paper h4,.paper h5,.paper strong{color:var(--print)}
.paper p,.paper li{color:#3B2C22}
.paper .lead{color:#3B2C22}
.paper .num,.paper .mono{color:#A9491A}
.paper .eyebrow{color:#0B4F43}
.paper .tag-cyan{background:rgba(11,31,26,.08);color:#0B4F43;border-color:rgba(11,31,26,.28)}
.paper .tag-amber{background:rgba(180,96,10,.12);color:#8A4A05;border-color:rgba(180,96,10,.34)}
.paper .rule{background:linear-gradient(90deg,rgba(36,26,20,.4),rgba(36,26,20,0) 88%)}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;overflow:hidden;isolation:isolate;
  border-radius:var(--radius);
  border:1px solid rgba(53,242,208,.18);
  aspect-ratio:16 / 10;
  background:
    radial-gradient(120% 90% at 78% 6%, rgba(245,166,35,.20), transparent 58%),
    linear-gradient(140deg, rgba(53,242,208,.16), rgba(11,31,26,.04) 46%),
    var(--ink-panel);
}
.media > img{width:100%;height:100%;object-fit:cover;object-position:center}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.42;
  background-image:
    repeating-linear-gradient(90deg, rgba(53,242,208,.20) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(0deg, rgba(53,242,208,.20) 0 1px, transparent 1px 46px);
}
.media--wide{aspect-ratio:21 / 9}
.media--square{aspect-ratio:1 / 1}
.media--tall{aspect-ratio:4 / 5}
.media-caption{margin-top:10px;font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.08em;color:var(--faint)}

/* ---------- 链接下划线 ---------- */
.link-underline{position:relative;display:inline-block;padding-bottom:2px;color:var(--paper);text-decoration:none}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .24s var(--ease);
}
.link-underline:hover::after,.link-underline:focus-visible::after{transform:scaleX(1)}
.link-underline:hover,.link-underline:focus-visible{color:var(--cyan)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  border-top:1px solid var(--line-cyan);
  background:
    radial-gradient(700px 340px at 12% 0%, rgba(53,242,208,.08), transparent 66%),
    linear-gradient(180deg,#0B1F1A 0%,#070D0C 100%);
  color:var(--muted);
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;
  background:linear-gradient(90deg,var(--cyan),var(--amber) 46%,rgba(226,112,58,0) 86%);
}
.footer-inner{max-width:var(--wrap);margin-inline:auto;padding:clamp(36px,5vw,64px) var(--pad) 0}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(22px,3.4vw,44px);
  padding-bottom:clamp(26px,4vw,44px);
  border-bottom:1px solid var(--line-soft);
}
.footer-col{min-width:0}
.footer-brand{display:grid;align-content:start;gap:14px}
.footer-brand-name{
  display:inline-flex;align-items:center;gap:10px;
  font-size:var(--fs-20);font-weight:900;letter-spacing:.03em;
  color:var(--paper);text-decoration:none;
}
.footer-brand-name::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--cyan);
  box-shadow:0 0 0 4px rgba(53,242,208,.14);
}
.footer-brand-name:hover,.footer-brand-name:focus-visible{color:var(--cyan)}
.footer-intro{font-size:14.5px;line-height:1.8;color:var(--muted);max-width:30em}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:var(--fs-12);
  letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
}
.footer-links{display:grid;gap:9px}
.footer-links a{
  display:inline-block;font-size:14.5px;color:var(--body-ink);text-decoration:none;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-links a:hover,.footer-links a:focus-visible{color:var(--cyan);transform:translateX(4px)}
.footer-text{display:grid;gap:9px;font-size:14px;line-height:1.72;color:var(--muted);word-break:break-word}
.footer-note{margin-top:12px;font-size:var(--fs-12);line-height:1.7;color:var(--faint)}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding-block:clamp(16px,2.4vw,24px) clamp(22px,3vw,32px);
}
.footer-icp{font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.04em;color:var(--faint);max-width:none}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-legal-links a{font-size:var(--fs-13);color:var(--muted);text-decoration:none;transition:color .18s var(--ease)}
.footer-legal-links a:hover,.footer-legal-links a:focus-visible{color:var(--cyan)}

/* ---------- 渐入（页面阶段给区块加 data-reveal） ---------- */
[data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal][data-revealed="true"]{opacity:1;transform:none}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .header-actions .btn-ghost{display:none}
}

@media (max-width:1024px){
  :root{--header-h:70px}
  .header-rail{
    flex-wrap:wrap;border-radius:22px;
    padding:10px 12px;gap:10px;
  }
  .brand-tag{display:none}
  .site-nav{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    display:none;flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:14px;border-radius:20px;
    background:linear-gradient(180deg,rgba(18,51,43,.99),rgba(11,31,26,.99));
    border:1px solid var(--line-cyan);
    box-shadow:0 26px 54px rgba(0,0,0,.55);
  }
  .site-nav[data-open="true"]{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .nav-link{display:block;padding:12px 12px;border-radius:12px;font-size:16px}
  .nav-link::after{display:none}
  .nav-link:hover,.nav-link:focus-visible{background:rgba(53,242,208,.10)}
  .nav-link[aria-current="page"]{background:rgba(53,242,208,.12)}
  .nav-quick{
    display:grid;grid-template-columns:1fr 1fr;gap:8px;
    margin-top:10px;padding-top:12px;
    border-top:1px solid var(--line-soft);
  }
  .nav-quick-link:first-child{grid-column:1 / -1}
  .nav-toggle{display:inline-flex}
}

@media (max-width:980px){
  .grid-12{grid-template-columns:repeat(8,minmax(0,1fr))}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 8}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:640px){
  :root{--gap:16px}
  body{font-size:16px}
  .header-rail{border-radius:20px}
  .brand-name{font-size:15.5px}
  .header-actions .btn-solid{padding:8px 13px;font-size:12.5px}
  .grid-12{grid-template-columns:1fr}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:1 / -1}
  .footer-grid{grid-template-columns:1fr}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .crumbs{font-size:12px}
}

/* ---------- 减少动效 ---------- */
@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;transform:none}
  .card:hover{transform:none;box-shadow:none}
  .footer-links a:hover{transform:none}
  .scroll-progress > span{transition:none}
}