/* ===== NG赛场 · 共享样式表 /assets/site.css ===== */

/* 1. Reset */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0}

/* 2. 变量 */
:root{
  --ink-0:#080B0A;
  --ink-1:#0E1512;
  --ink-2:#16201C;
  --ink-3:#1F2C27;
  --line:#2C3A34;
  --turf:#0F3D2E;
  --white:#F2F7F4;
  --muted:#9AA8A2;
  --lime:#C6FF3D;
  --orange:#FF7A1A;
  --lime-soft:rgba(198,255,61,.14);
  --orange-soft:rgba(255,122,26,.16);
  --font-display:"Archivo Black","Arial Narrow","Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --shell:min(1440px,92vw);
  --header-h:76px;
  --radius:18px;
  --radius-sm:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* 3. 基础与中文排版 */
body{
  background-color:var(--ink-0);
  background-image:
    radial-gradient(120% 55% at 8% -12%, rgba(198,255,61,.08), transparent 62%),
    radial-gradient(90% 45% at 100% 0%, rgba(255,122,26,.07), transparent 58%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-weight:800;line-height:1.18}
::selection{background:var(--lime);color:var(--ink-0)}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  padding:10px 16px;border-radius:999px;
  background:var(--lime);color:var(--ink-0);
  font-size:13px;font-weight:700;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:none}

/* 4. 排版工具 */
.display{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(48px,9vw,132px);
  line-height:.95;letter-spacing:-.02em;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.24em;text-transform:uppercase;color:var(--lime);
}
.note{font-size:12.5px;line-height:1.6;color:var(--muted)}
.lede{font-size:clamp(16.5px,1.3vw,20px);line-height:1.7;color:var(--muted);max-width:60ch}
.prose{max-width:68ch;font-size:17px;line-height:1.85;color:#DCE6E0}
.prose p+p{margin-top:1.4em}
.prose strong{color:var(--white)}
.tag{
  display:inline-block;padding-left:9px;border-left:2px solid var(--lime);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--lime);
}
.rule{height:1px;background:var(--line)}

/* 5. 布局 */
.shell{width:var(--shell);margin-inline:auto}
.section{position:relative;padding:clamp(56px,7vw,120px) 0}
.section--tight{padding:clamp(36px,4vw,64px) 0}
.section__head{display:grid;gap:14px;margin-bottom:clamp(26px,3.4vw,52px)}
.section__title{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(30px,4.6vw,64px);line-height:1.02;letter-spacing:-.02em;
}
.section__note{max-width:56ch;font-size:13.5px;line-height:1.7;color:var(--muted)}

.grid{display:grid;gap:clamp(18px,2.2vw,32px)}
.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)}
.grid--split-rev{grid-template-columns:minmax(0,2fr) minmax(0,1fr)}
.grid--sidebar{grid-template-columns:minmax(0,220px) minmax(0,1fr);gap:clamp(24px,3vw,56px)}

/* 6. 按钮与标签 */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:700;letter-spacing:.02em;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),filter .18s var(--ease);
}
.btn--primary{background:var(--lime);color:var(--ink-0)}
.btn--primary:hover{filter:brightness(1.08)}
.btn--orange{background:var(--orange);color:var(--ink-0)}
.btn--orange:hover{filter:brightness(1.08)}
.btn--ghost{border-color:var(--line);background:rgba(31,44,39,.55);color:var(--white)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border:1px solid var(--line);border-radius:999px;
  font-size:13px;color:var(--muted);background:rgba(22,32,28,.6);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.chip:hover{color:var(--white);border-color:#3C4C45}
.chip--active{border-color:var(--lime);color:var(--lime);background:var(--lime-soft)}

/* 7. 面板与数据 */
.panel{
  background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(18px,2vw,28px);
}
.panel__head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:16px}
.panel__title{font-size:16px;font-weight:800;letter-spacing:.01em}
.panel__body{font-size:14.5px;color:var(--muted)}

.stat{display:grid;gap:6px}
.stat__value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3vw,42px);line-height:1;color:var(--lime);letter-spacing:-.02em;
}
.stat__label{font-size:12.5px;color:var(--muted);letter-spacing:.06em}

/* 8. 图片容器基础规则 */
.media{
  position:relative;overflow:hidden;isolation:isolate;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(155deg,var(--ink-2),var(--ink-0));
}
.media img{width:100%;height:100%;object-fit:cover}
.media--169{aspect-ratio:16/9}
.media--43{aspect-ratio:4/3}
.media--11{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--wide{aspect-ratio:21/9}
.media__veil{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(8,11,10,.12),rgba(8,11,10,.82));
}
.media__caption{
  position:absolute;left:16px;right:16px;bottom:14px;z-index:2;
  font-size:12px;line-height:1.5;color:var(--muted);
}

/* 9. 目录、面包屑与装饰图形 */
.toc{position:sticky;top:calc(var(--header-h) + 26px)}
.toc__list{display:grid;gap:2px}
.toc__link{
  display:block;padding:9px 0 9px 14px;border-left:2px solid var(--line);
  font-size:13px;color:var(--muted);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.toc__link:hover{color:var(--white);border-color:#3C4C45}
.toc__link.is-active{color:var(--lime);border-color:var(--lime);background:linear-gradient(90deg,var(--lime-soft),transparent 70%)}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-family:var(--font-mono);font-size:12px;color:var(--muted)}
.crumbs__link{transition:color .18s var(--ease)}
.crumbs__link:hover{color:var(--lime)}
.crumbs__sep{opacity:.5}

.blob{
  position:absolute;pointer-events:none;z-index:0;
  border-radius:46% 54% 58% 42% / 52% 44% 56% 48%;
  background:radial-gradient(circle at 34% 32%, rgba(198,255,61,.16), transparent 68%);
  width:340px;height:340px;
}
.turf-block{
  background:linear-gradient(140deg,rgba(15,61,46,.85),rgba(15,61,46,0));
  border-radius:48% 52% 40% 60% / 55% 45% 55% 45%;
}
.diag{clip-path:polygon(0 0,100% 0,100% 90%,0 100%)}
.diag--flip{clip-path:polygon(0 0,100% 0,100% 100%,0 90%)}

/* 10. 页头命令栏 */
.site-header{
  --header-h:76px;
  position:sticky;top:0;z-index:120;
  background:rgba(8,11,10,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--lime),rgba(198,255,61,0) 55%,var(--orange));
}
.site-header.is-compact{--header-h:58px}

.header__bar{
  display:flex;align-items:center;gap:clamp(12px,1.6vw,26px);
  min-height:var(--header-h);padding:9px 0;
  transition:min-height .2s var(--ease);
}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:38px;height:38px;border-radius:12px;
  background:var(--lime);color:var(--ink-0);
  font-family:var(--font-display);font-weight:900;font-size:15px;letter-spacing:-.05em;
}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:19px;letter-spacing:.02em}
.brand__tagline{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.3em;color:var(--muted);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.site-header.is-compact .brand__tagline{opacity:0;transform:translateY(-4px)}
.brand--footer .brand__mark{width:46px;height:46px;border-radius:14px;font-size:17px}
.brand--footer .brand__name{font-size:22px}

.nav{flex:1 1 auto;min-width:0}
.nav__list{display:flex;align-items:center;justify-content:center;gap:clamp(4px,1vw,18px);counter-reset:navidx}
.nav__item{counter-increment:navidx}
.nav__link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 4px;font-size:13.5px;color:var(--muted);white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav__link::before{
  content:counter(navidx,decimal-leading-zero);
  font-family:var(--font-mono);font-size:10px;opacity:.55;letter-spacing:0;
}
.nav__link:hover{color:var(--white)}
.nav__link[aria-current="page"]{color:var(--lime)}
.nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--lime);
}
.nav__meta{
  display:none;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:12px;color:var(--muted);letter-spacing:.08em;
}

.header-status{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.status-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 11px;border:1px solid var(--line);border-radius:999px;
  background:rgba(22,32,28,.78);
  font-size:11.5px;color:var(--muted);letter-spacing:.04em;
}
.status-chip__key{color:var(--muted)}
.status-chip__val{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:12.5px;font-weight:600;color:var(--white);
}
.status-chip--live .status-chip__val{color:var(--lime)}
.status-chip__dot{
  width:6px;height:6px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 0 rgba(198,255,61,.55);animation:pulse 2.2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(198,255,61,.5)}
  70%{box-shadow:0 0 0 9px rgba(198,255,61,0)}
  100%{box-shadow:0 0 0 0 rgba(198,255,61,0)}
}

.header__cta{flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:9px;flex:0 0 auto;
  padding:8px 13px;border:1px solid var(--line);border-radius:999px;
  font-size:12.5px;color:var(--white);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{border-color:#3C4C45}
.nav-toggle[aria-expanded="true"]{border-color:var(--lime);color:var(--lime)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg)}
.nav-toggle__label{letter-spacing:.1em}

.scroll-meter{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden}
.scroll-meter__bar{
  display:block;width:100%;height:100%;
  background:linear-gradient(90deg,var(--lime),var(--orange));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
}

/* 11. 页脚 */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,7vw,96px);
  padding:clamp(42px,5vw,78px) 0 28px;
  background:linear-gradient(180deg,var(--ink-1),var(--ink-0));
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-140px;right:-90px;width:380px;height:380px;
  border-radius:46% 54% 58% 42% / 52% 44% 56% 48%;
  background:radial-gradient(circle at 35% 35%, rgba(198,255,61,.15), transparent 68%);
  pointer-events:none;
}
.footer__inner{
  position:relative;z-index:1;display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.65fr);
  gap:clamp(28px,4vw,64px);align-items:start;
}
.footer__brand{display:grid;gap:14px;max-width:42ch}
.footer__note{font-size:13px;line-height:1.7;color:var(--muted)}
.footer__note--muted{
  font-size:12.5px;color:rgba(154,168,162,.82);
  padding-left:13px;border-left:2px solid var(--line);
}
.footer__cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(18px,2.4vw,32px)}
.footer__coltitle{
  margin-bottom:14px;font-family:var(--font-mono);font-size:11px;
  font-weight:500;letter-spacing:.24em;text-transform:uppercase;color:var(--lime);
}
.footer__links{display:grid;gap:10px}
.footer__link{font-size:14px;color:var(--muted);transition:color .18s var(--ease)}
.footer__link:hover{color:var(--white)}

.footer__contact{
  position:relative;z-index:1;
  margin-top:clamp(32px,4vw,58px);padding-top:24px;border-top:1px solid var(--line);
}
.contact-list{display:flex;flex-wrap:wrap;gap:14px 30px}
.contact-item{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.contact-item__key{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:rgba(154,168,162,.72);
}
.contact-item__val{font-family:var(--font-mono);font-size:13px;color:var(--white);letter-spacing:-.01em}
.copy-btn{
  padding:5px 11px;border:1px solid var(--line);border-radius:999px;
  font-size:11px;color:var(--muted);letter-spacing:.06em;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.copy-btn:hover{border-color:var(--lime);color:var(--lime)}
.copy-btn.is-copied{border-color:var(--lime);color:var(--ink-0);background:var(--lime)}

.footer__bottom{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:baseline;
  margin-top:clamp(28px,3vw,46px);padding-top:20px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:12px;color:var(--muted);
}
.footer__legal{letter-spacing:.06em}
.footer__meta{color:rgba(154,168,162,.75)}

/* 12. 返回顶部 */
.to-top{
  position:fixed;right:clamp(14px,2vw,28px);bottom:clamp(14px,2vw,28px);z-index:110;
  display:grid;place-items:center;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line);background:rgba(22,32,28,.94);color:var(--white);
  font-size:17px;line-height:1;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),
             visibility .2s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--lime);color:var(--lime)}

/* 13. 入场动效 */
html.has-js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
html.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* 14. 响应式 */
@media (max-width:1300px){
  .header-status .status-chip:nth-child(3){display:none}
}
@media (max-width:1120px){
  .header-status .status-chip:nth-child(2){display:none}
}
@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;display:block;
    padding:20px max(4vw,18px) 36px;
    background:linear-gradient(180deg,rgba(14,21,18,.985),rgba(8,11,10,.995));
    border-bottom:1px solid var(--line);
    opacity:0;visibility:hidden;transform:translateY(-12px);pointer-events:none;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  }
  .nav[data-open]{
    opacity:1;visibility:visible;transform:none;pointer-events:auto;
  }
  .nav__list{flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0}
  .nav__link{
    display:flex;align-items:center;justify-content:space-between;
    padding:16px 2px;font-size:17px;color:var(--white);
    border-bottom:1px solid var(--line);
  }
  .nav__link::before{font-size:11px;order:2}
  .nav__link[aria-current="page"]{color:var(--lime)}
  .nav__link[aria-current="page"]::after{display:none}
  .nav__meta{display:block}
  .footer__inner{grid-template-columns:1fr}
}
@media (max-width:900px){
  .grid--2,.grid--3,.grid--split,.grid--split-rev,.grid--sidebar{grid-template-columns:1fr}
  .toc{position:static}
}
@media (max-width:760px){
  .header-status{display:none}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .media--wide{aspect-ratio:16/9}
  .media--tall{aspect-ratio:4/5}
  .blob{width:240px;height:240px}
}
@media (max-width:520px){
  .brand__tagline{display:none}
  .header__cta{padding:10px 15px;font-size:12.5px}
  .footer__cols{grid-template-columns:1fr;gap:22px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .contact-list{flex-direction:column;gap:12px}
}

/* 15. 无障碍与减弱动效 */
@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.has-js [data-reveal]{opacity:1;transform:none}
  .scroll-meter__bar{transition:none}
}