/* ============================================================
   必一赛事 · /assets/site.css
   共享外壳：夜场冷光 Bento 底板
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dt,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ---------- 2. 变量 ---------- */
:root{
  --bg:#061A16;
  --panel:#0C2A23;
  --panel-2:#0F332A;
  --line:#1C4A3E;
  --cyan:#2FF0C4;
  --cyan-soft:#A9FCE6;
  --orange:#FF7A2F;
  --amber:#FFC08A;
  --ink:#E8F4F0;
  --muted:#94AFA8;
  --violet:#8F7BFF;
  --shell:1240px;
  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-narrow:"Source Han Sans Narrow","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"JetBrains Mono","Cascadia Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --fast:160ms;
}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink);
  background-color:var(--bg);
  background-image:
    linear-gradient(to right,rgba(28,74,62,.42) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(28,74,62,.28) 1px,transparent 1px),
    radial-gradient(120% 80% at 78% -10%,rgba(47,240,196,.10),transparent 58%),
    radial-gradient(90% 60% at 0% 100%,rgba(143,123,255,.08),transparent 60%);
  background-size:80px 80px,80px 80px,100% 100%,100% 100%;
  min-height:100vh;
}
h1,h2,h3,h4{font-family:var(--font-narrow);font-weight:700;letter-spacing:-.01em;line-height:1.28}
h1{font-size:clamp(28px,4.4vw,46px)}
h2{font-size:clamp(22px,2.8vw,32px)}
h3{font-size:clamp(18px,2vw,22px)}
p{max-width:74ch}
strong{color:var(--cyan-soft);font-weight:700}
::selection{background:var(--cyan);color:#04140F}

.mono{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  font-variant-numeric:tabular-nums;
}
.numeric{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ---------- 4. 布局骨架 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:clamp(16px,4vw,32px)}
#main-content{display:block;scroll-margin-top:130px}
.section{padding-block:clamp(44px,6vw,84px);border-top:1px solid var(--line)}
.section:first-of-type{border-top:0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px 28px;margin-bottom:clamp(20px,3vw,34px)}
.section-head p{color:var(--muted);font-size:15px;max-width:56ch}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);border-left:2px solid var(--cyan);
  padding-left:9px;margin-bottom:10px;
}
.divider{height:1px;background:var(--line);border:0;margin-block:clamp(20px,3vw,32px)}
.stack>*+*{margin-top:16px}
.stack-lg>*+*{margin-top:28px}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,1.6vw,20px)}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
.bento{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,1.6vw,18px);grid-auto-rows:minmax(96px,auto)}

/* ---------- 5. 面板与数据组件 ---------- */
.panel{
  position:relative;background:var(--panel);border:1px solid var(--line);
  padding:clamp(16px,2vw,24px);transition:border-color var(--fast) ease,transform var(--fast) ease;
}
.panel:hover{border-color:rgba(47,240,196,.65);transform:translateY(-1px)}
.panel__head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:10px;margin-bottom:14px;border-bottom:1px solid var(--line);
}
.panel__body{color:var(--muted);font-size:15px}
.panel__body strong{color:var(--ink)}

.data-band{
  background:linear-gradient(90deg,rgba(12,42,35,.94),rgba(6,26,22,.94));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding-block:clamp(18px,2.6vw,30px);
}
.stat{display:flex;flex-direction:column;gap:2px}
.stat__num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(40px,7.2vw,100px);line-height:.95;font-weight:700;
  color:var(--orange);letter-spacing:-.03em;
}
.stat__unit{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}

.tag{
  display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);
  background:rgba(12,42,35,.8);color:var(--muted);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  padding:4px 9px;
}
.tag--orange{border-color:rgba(255,122,47,.55);color:var(--amber)}
.tag--cyan{border-color:rgba(47,240,196,.5);color:var(--cyan-soft)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;
  padding:11px 18px;border:1px solid var(--line);color:var(--ink);
  transition:background var(--fast) ease,border-color var(--fast) ease,transform var(--fast) ease,color var(--fast) ease;
}
.btn:hover{transform:translateY(-1px);border-color:var(--cyan);color:var(--cyan)}
.btn--primary{background:var(--orange);border-color:var(--orange);color:#1E1006;font-weight:700}
.btn--primary:hover{background:#FF9251;border-color:#FF9251;color:#1E1006}
.btn--ghost{background:transparent;border-color:rgba(47,240,196,.5);color:var(--cyan)}
.btn--ghost:hover{background:rgba(47,240,196,.12);color:var(--cyan-soft)}
.btn--sm{padding:8px 13px;font-size:11.5px}

.crumbs{margin-bottom:clamp(16px,2vw,24px)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:10px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:10px;color:var(--line)}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--cyan-soft)}

.prose{max-width:68ch;color:#D3E7E1}
.prose>*+*{margin-top:16px}
.prose p+p{margin-top:14px}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(47,240,196,.45)}
.prose a:hover{color:var(--cyan-soft);border-bottom-color:var(--cyan-soft)}
.prose ul,.prose ol{display:grid;gap:8px;padding-left:0}
.prose li{position:relative;padding-left:18px}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:1px;background:var(--cyan)}
.prose h2,.prose h3{margin-top:32px}

.index-nav{border:1px solid var(--line);background:rgba(12,42,35,.7);padding:14px 16px}
.index-nav__link{
  display:flex;align-items:baseline;gap:10px;padding:7px 0;border-top:1px solid transparent;
  font-size:14px;color:var(--muted);transition:color var(--fast) ease;
}
.index-nav__link:hover{color:var(--cyan-soft)}
.index-nav__link[aria-current]{color:var(--cyan)}
.index-nav__link[aria-current]::before{background:var(--cyan)}

/* ---------- 6. 图片容器基础规则 ---------- */
.media{
  position:relative;display:block;width:100%;overflow:hidden;
  background-color:var(--panel);border:1px solid var(--line);
  background-image:repeating-linear-gradient(135deg,rgba(47,240,196,.07) 0 1px,transparent 1px 13px);
}
.media img{width:100%;height:100%;object-fit:cover}
.media--21x9{aspect-ratio:21/9}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media__label{
  position:absolute;left:0;bottom:0;z-index:2;
  background:rgba(6,26,22,.84);color:var(--cyan-soft);
  border-top:1px solid var(--line);border-right:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  padding:5px 10px;
}
.media--night::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(120% 90% at 18% 0%,rgba(47,240,196,.14),transparent 58%),
    linear-gradient(180deg,transparent 42%,rgba(6,26,22,.78));
}

/* ---------- 7. 头部 ---------- */
.skip-link{
  position:fixed;top:-100px;left:12px;z-index:200;
  background:var(--orange);color:#1E1006;font-family:var(--font-mono);
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;padding:10px 16px;
  transition:top var(--fast) ease;
}
.skip-link:focus{top:12px}

.site-header{position:sticky;top:0;z-index:60;background:var(--bg)}
.brandbar{background:var(--bg);border-bottom:1px solid var(--line)}
.brandbar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:66px;padding-block:10px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand__mark{
  flex:none;width:38px;height:38px;display:grid;place-items:center;
  border:1px solid var(--cyan);color:var(--cyan);font-size:13px;letter-spacing:.06em;
  background:rgba(47,240,196,.07);
}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{font-family:var(--font-narrow);font-weight:700;font-size:18px;letter-spacing:.01em;line-height:1.3}
.brand__tag{font-size:10.5px;letter-spacing:.16em;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brandbar__meta{display:flex;align-items:center;gap:14px;flex:none}
.field-chip{
  display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);
  padding:5px 10px;color:var(--cyan-soft);background:rgba(12,42,35,.7);font-size:11px;
}
.field-chip__k{color:var(--muted);border-right:1px solid var(--line);padding-right:8px}
.brandbar__mail{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--muted);
  border-bottom:1px solid transparent;transition:color var(--fast) ease,border-color var(--fast) ease;
  max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.brandbar__mail:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.navline{background:rgba(12,42,35,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(6px)}
.navline__inner{position:relative;display:flex;align-items:stretch;gap:8px}
.primary-nav{display:flex;align-items:stretch;min-width:0}
.primary-nav__list{display:flex;align-items:stretch;overflow-x:auto;scrollbar-width:none}
.primary-nav__list::-webkit-scrollbar{display:none}
.primary-nav a{
  position:relative;display:block;padding:13px 15px;font-size:15px;color:#C7DCD6;
  white-space:nowrap;transition:color var(--fast) ease,background var(--fast) ease;
}
.primary-nav a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:0;height:2px;background:var(--cyan);
  transform:scaleX(0);transform-origin:0 50%;transition:transform var(--fast) ease;
}
.primary-nav a:hover{color:var(--ink);background:rgba(47,240,196,.06)}
.primary-nav a:hover::after{transform:scaleX(.45)}
.primary-nav a[aria-current="page"]{color:var(--cyan)}
.primary-nav a[aria-current="page"]::after{transform:scaleX(1)}
.navline__hint{
  margin-left:auto;align-self:center;padding-left:16px;font-size:11px;letter-spacing:.14em;
  color:var(--muted);white-space:nowrap;
}
.nav-toggle{display:none;align-items:center;gap:10px;padding:12px 14px;color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:1.5px;background:currentColor;transition:transform var(--fast) ease,opacity var(--fast) ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5.5px) 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(-5.5px) rotate(-45deg)}
.nav-toggle__label{font-size:11px;letter-spacing:.16em}

.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(28,74,62,.55);pointer-events:none}
.scroll-progress__bar{
  display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transition:transform 120ms linear;
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,7vw,96px);border-top:1px solid var(--line);
  background:linear-gradient(180deg,#08211C 0%,var(--bg) 100%);
}
.footer-rule{border-bottom:1px solid var(--line);background:rgba(12,42,35,.55)}
.footer-rule__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  padding-block:14px;
}
.footer-rule__text{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:9px}
.footer-rule__key{color:var(--cyan);border:1px solid rgba(47,240,196,.4);padding:2px 7px;font-size:10px}
.footer-rule__links{display:flex;flex-wrap:wrap;gap:8px 18px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase}
.footer-rule__links a{color:var(--muted);transition:color var(--fast) ease}
.footer-rule__links a:hover{color:var(--cyan)}

.footer-main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:clamp(22px,3vw,40px);padding-block:clamp(32px,4.5vw,56px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.footer-brand__mark{
  font-family:var(--font-narrow);font-weight:700;font-size:21px;letter-spacing:.02em;
  border-bottom:2px solid var(--cyan);padding-bottom:4px;
}
.footer-brand__desc{font-size:14px;color:var(--muted);max-width:34ch}
.footer-col{min-width:0}
.footer-col__title{
  font-size:11px;letter-spacing:.18em;color:var(--cyan-soft);
  padding-bottom:9px;margin-bottom:12px;border-bottom:1px solid var(--line);
}
.footer-list{display:grid;gap:7px}
.footer-list a{font-size:14px;color:var(--muted);transition:color var(--fast) ease,padding-left var(--fast) ease}
.footer-list a:hover{color:var(--cyan);padding-left:5px}
.footer-contact{display:grid;gap:11px}
.footer-contact__item{display:flex;flex-direction:column;gap:2px}
.footer-contact__k{font-size:10px;letter-spacing:.16em;color:var(--cyan)}
.footer-contact__v{font-size:13.5px;color:var(--muted);word-break:break-word;line-height:1.6}
.footer-base{border-top:1px solid var(--line);background:rgba(6,26,22,.8)}
.footer-base__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;
  padding-block:16px;
}
.footer-base__legal,.footer-base__note{font-size:11px;letter-spacing:.1em;color:var(--muted)}
.footer-base__note{color:var(--amber)}

.to-top{
  position:fixed;right:clamp(12px,3vw,28px);bottom:clamp(12px,3vw,28px);z-index:70;
  display:inline-flex;align-items:center;gap:8px;padding:10px 14px;
  background:var(--panel);border:1px solid var(--line);color:var(--cyan);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--fast) ease,transform var(--fast) ease,visibility var(--fast) ease,border-color var(--fast) ease;
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--cyan);background:var(--panel-2)}
.to-top__arrow{font-size:14px;line-height:1}
.to-top__label{font-size:10.5px;letter-spacing:.14em}

/* ---------- 9. 显现动效 ---------- */
html.js [data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity 400ms ease,transform 400ms ease;
}
html.js [data-reveal="in"]{opacity:1;transform:none}

/* ---------- 10. 平板 ---------- */
@media (max-width:1000px){
  .navline__hint{display:none}
  .footer-main{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1}
  .span-3{grid-column:span 6}
  .span-4{grid-column:span 6}
  .span-8{grid-column:span 12}
}

/* ---------- 11. 移动导航 ---------- */
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .navline__inner{padding-inline:8px}
  .primary-nav{
    position:absolute;top:100%;left:0;right:0;z-index:70;
    display:block;background:var(--panel);border-bottom:1px solid var(--line);
    box-shadow:0 26px 44px rgba(0,0,0,.5);
    max-height:0;overflow:hidden;
    transition:max-height 240ms ease;
  }
  .primary-nav[data-open]{max-height:min(72vh,540px);overflow-y:auto}
  .primary-nav__list{flex-direction:column;overflow:visible}
  .primary-nav__list li{border-top:1px solid var(--line)}
  .primary-nav a{padding:14px 18px;font-size:15.5px}
  .primary-nav a::after{left:18px;right:auto;width:46px;bottom:9px}
}

/* ---------- 12. 手机 ---------- */
@media (max-width:640px){
  body{font-size:16px;background-size:56px 56px,56px 56px,100% 100%,100% 100%}
  .brandbar__inner{min-height:60px;gap:12px}
  .brand__tag{display:none}
  .brand__mark{width:34px;height:34px;font-size:12px}
  .brand__name{font-size:16.5px}
  .brandbar__meta{gap:8px}
  .brandbar__mail{max-width:132px;font-size:10.5px}
  .field-chip{padding:4px 8px;font-size:10px}
  .grid-12,.bento{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-3,.span-4,.span-6,.span-8,.span-12{grid-column:1 / -1}
  .footer-main{grid-template-columns:1fr;gap:26px}
  .footer-rule__inner{justify-content:flex-start}
  .footer-base__inner{flex-direction:column;align-items:flex-start}
  .to-top{padding:9px 12px}
}
@media (max-width:420px){
  .brandbar__mail{display:none}
}

/* ---------- 13. 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;
  }
  html.js [data-reveal]{opacity:1 !important;transform:none !important}
  .panel:hover,.btn:hover{transform:none}
}