/* ============================================================
   亚博线上赛场 · CN HOME — shared site kit (/assets/site.css)
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root{
  --ink:#08130F;
  --char:#0D0F0E;
  --pine:#10241D;
  --panel:#17332A;
  --glass:#24443A;
  --mist:#E6F0EA;
  --moss:#9FB6AB;
  --cyan:#2BF0C4;
  --orange:#FF8B3D;
  --blue:#6FD8FF;
  --paper:#F3EDE2;

  --line:rgb(159 182 171 / .18);
  --line-soft:rgb(159 182 171 / .10);
  --cyan-08:rgb(43 240 196 / .08);
  --cyan-40:rgb(43 240 196 / .40);
  --orange-10:rgb(255 139 61 / .10);
  --orange-45:rgb(255 139 61 / .45);
  --glass-40:rgb(36 68 58 / .42);

  --font-display:"Arial Narrow","Helvetica Neue Condensed","Roboto Condensed","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono","IBM Plex Mono",Menlo,Consolas,"Courier New",monospace;

  --shell:1320px;
  --gutter:clamp(16px,4vw,48px);
  --step:8px;
  --radius:2px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
[id]{scroll-margin-top:96px}

/* ---------- 3. base ---------- */
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  color:var(--mist);
  background:
    radial-gradient(120% 80% at 84% -12%, rgb(43 240 196 / .10), transparent 58%),
    radial-gradient(90% 70% at -12% 108%, rgb(255 139 61 / .06), transparent 62%),
    var(--ink);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:var(--cyan);color:#04120E}

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

/* ---------- 4. skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  transform:translateY(-220%);
  padding:10px 18px;
  background:var(--cyan);color:#04120E;
  font-weight:700;font-size:.875rem;letter-spacing:.04em;
  border-radius:var(--radius);
  transition:transform .18s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:none;outline:2px solid #04120E;outline-offset:2px}

/* ---------- 5. header / command bar ---------- */
.cmdbar{
  position:sticky;top:0;z-index:100;
  background:rgb(8 19 15 / .88);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.cmdbar::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgb(43 240 196 / .45) 42%,rgb(111 216 255 / .30) 62%,transparent);
}
.cmdbar__inner{
  width:min(calc(100% - var(--gutter) * 2),var(--shell));
  margin-inline:auto;
  display:flex;align-items:center;gap:clamp(12px,2vw,32px);
  min-height:64px;
  padding-block:10px;
}

/* brand */
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;order:0}
.brand__mark{
  position:relative;flex:0 0 auto;
  width:30px;height:30px;
  background:linear-gradient(152deg,var(--cyan) 0%,#0E9078 58%,rgb(14 144 120 / .18) 58.5%,transparent 100%);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
}
.brand__pulse{
  position:absolute;left:7px;bottom:7px;
  width:8px;height:8px;background:var(--ink);
}
.brand__text{display:flex;flex-direction:column;line-height:1.12}
.brand__name{
  font-family:var(--font-display);
  font-weight:700;font-size:1.0625rem;letter-spacing:.12em;color:var(--mist);
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:.6875rem;letter-spacing:.14em;text-transform:uppercase;color:var(--moss);
}

/* nav */
.cmdnav{margin-inline:auto;order:1}
.cmdnav__list{display:flex;align-items:center;gap:2px}
.cmdnav__item{display:block}
.cmdnav__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:9px 11px;
  font-size:.875rem;line-height:1.2;
  color:var(--moss);
  border-radius:var(--radius);
  transition:color .2s var(--ease),background-color .2s var(--ease);
  white-space:nowrap;
}
.cmdnav__idx{
  font-family:var(--font-mono);font-size:.625rem;letter-spacing:.06em;
  color:rgb(159 182 171 / .55);
  transition:color .2s var(--ease);
}
.cmdnav__link:hover{color:var(--mist);background:var(--glass-40)}
.cmdnav__link:hover .cmdnav__idx{color:var(--moss)}
.cmdnav__link[aria-current="page"]{color:var(--cyan);background:var(--cyan-08)}
.cmdnav__link[aria-current="page"] .cmdnav__idx{color:var(--cyan)}
.cmdnav__link[aria-current="page"]::after{
  content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;
  background:var(--cyan);
}

/* meta cluster */
.cmdbar__meta{display:flex;align-items:center;gap:8px;flex:0 0 auto;order:2}
.statusPill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 11px;
  border:1px solid var(--orange-45);border-radius:999px;
  background:var(--orange-10);
  color:var(--orange);
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.08em;
  white-space:nowrap;
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.statusPill:hover{background:rgb(255 139 61 / .18);border-color:var(--orange)}
.statusPill__dot{
  width:7px;height:7px;border-radius:50%;background:var(--orange);
  animation:breathe 2s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{opacity:.35;transform:scale(.82)}
  50%{opacity:1;transform:scale(1)}
}
.subChip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 11px;
  border:1px solid var(--line);border-radius:999px;
  background:var(--glass-40);
  font-size:.75rem;letter-spacing:.04em;color:var(--moss);
  white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.subChip:hover{color:var(--mist);border-color:var(--cyan-40)}
.subChip__num{font-family:var(--font-mono);font-size:.8125rem;color:var(--cyan)}

/* mobile toggle */
.navToggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--glass-40);color:var(--mist);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.navToggle:hover{color:var(--cyan);border-color:var(--cyan-40)}
.navToggle__bars{
  display:flex;flex-direction:column;justify-content:center;gap:3px;
  width:16px;height:14px;flex:0 0 auto;
}
.navToggle__bars i{
  display:block;height:2px;width:100%;background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.navToggle[aria-expanded="true"] .navToggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.navToggle[aria-expanded="true"] .navToggle__bars i:nth-child(2){opacity:0}
.navToggle[aria-expanded="true"] .navToggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.navToggle__label{font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.14em}

/* scroll progress */
.progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgb(36 68 58 / .55);
  overflow:hidden;pointer-events:none;
}
.progress__fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--blue));
}

/* ---------- 6. footer ---------- */
.sitefoot{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--pine) 0%,var(--char) 58%,#090A09 100%);
  border-top:1px solid var(--line);
  color:var(--moss);
}
.sitefoot__slash{
  position:absolute;top:0;right:0;
  width:min(48%,560px);height:100%;
  background:linear-gradient(205deg,rgb(43 240 196 / .12),rgb(43 240 196 / .02) 46%,transparent 68%);
  clip-path:polygon(40% 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.sitefoot__inner{
  position:relative;z-index:1;
  width:min(calc(100% - var(--gutter) * 2),var(--shell));
  margin-inline:auto;
  padding-block:clamp(40px,6vw,72px) clamp(20px,3vw,32px);
}
.sitefoot__top{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:clamp(28px,5vw,64px);
  padding-bottom:clamp(28px,4vw,48px);
  border-bottom:1px solid var(--line);
}
.sitefoot__brand{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.sitefoot__eyebrow{
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);
}
.sitefoot__title{
  font-family:var(--font-display);
  font-weight:700;font-size:clamp(1.6rem,2.6vw,2.2rem);
  letter-spacing:.08em;line-height:1.1;color:var(--mist);
}
.sitefoot__line{font-size:.9375rem;line-height:1.7;color:var(--moss);max-width:24em}
.sitefoot__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,3vw,40px);
}
.footcol{display:flex;flex-direction:column;gap:12px}
.footcol__title{
  font-family:var(--font-mono);
  font-size:.6875rem;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--mist);
}
.footcol__list{display:flex;flex-direction:column;gap:6px}
.footcol__item{line-height:1.5}
.footcol__link{
  display:inline-block;
  font-size:.875rem;color:var(--moss);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footcol__link:hover{color:var(--cyan);border-bottom-color:var(--cyan-40)}

.sitefoot__strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px clamp(16px,3vw,36px);
  padding-block:clamp(16px,2.4vw,24px);
  border-bottom:1px solid var(--line);
}
.stripItem{display:flex;align-items:baseline;gap:8px;min-width:0}
.stripItem__k{
  font-family:var(--font-mono);font-size:.625rem;letter-spacing:.14em;
  text-transform:uppercase;color:rgb(159 182 171 / .7);
}
.stripItem__v{
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.04em;
  color:var(--mist);white-space:nowrap;
}
.toTop{
  display:inline-flex;align-items:center;gap:8px;
  margin-left:auto;
  padding:8px 14px;
  border:1px solid var(--cyan-40);border-radius:999px;
  background:rgb(43 240 196 / .07);
  color:var(--cyan);
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.14em;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.toTop::before{
  content:"";width:0;height:0;
  border-left:4px solid transparent;border-right:4px solid transparent;
  border-bottom:6px solid currentColor;
}
.toTop:hover{background:rgb(43 240 196 / .16);border-color:var(--cyan)}
.toTop:active{transform:translateY(1px)}

.sitefoot__base{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 32px;
  padding-top:clamp(18px,2.4vw,26px);
}
.sitefoot__contact{display:flex;flex-direction:column;gap:4px}
.footnote{font-size:.8125rem;line-height:1.7;color:var(--moss)}
.footnote .mono{color:var(--mist)}
.sitefoot__legal{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:.75rem;letter-spacing:.02em;color:rgb(159 182 171 / .8);
}
.sitefoot__legal .mono{color:var(--moss)}
.sitefoot__dot{color:rgb(159 182 171 / .45)}

/* ---------- 7. layout ---------- */
.shell{
  width:min(calc(100% - var(--gutter) * 2),var(--shell));
  margin-inline:auto;
}
.section{position:relative;padding-block:clamp(48px,7vw,104px)}
.section--tint{background:var(--pine)}
.section--char{background:var(--char)}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px 32px;
  margin-bottom:clamp(20px,3vw,40px);
}
.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--453{grid-template-columns:4fr 5fr 3fr}
.grid--split{grid-template-columns:5fr 7fr}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 8. typography ---------- */
.display{
  font-family:var(--font-display);
  font-weight:700;font-size:clamp(2.4rem,5vw,4.6rem);
  line-height:1.02;letter-spacing:.08em;color:var(--mist);
  text-wrap:balance;
}
.h2{
  font-family:var(--font-display);
  font-weight:600;font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.15;letter-spacing:.04em;color:var(--mist);
  text-wrap:balance;
}
.h3{font-family:var(--font-body);font-weight:600;font-size:1.0625rem;line-height:1.4;letter-spacing:.02em;color:var(--mist)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);flex:0 0 auto}
.lede{font-size:clamp(1rem,1.3vw,1.125rem);line-height:1.7;color:var(--moss);max-width:34em}
.body{font-size:1rem;line-height:1.65;color:var(--moss);max-width:36em}
.note{font-size:.8125rem;line-height:1.5;color:var(--moss)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.rule{height:1px;border:0;background:var(--line)}

/* ---------- 9. panels & data ---------- */
.panel{
  position:relative;
  padding:clamp(16px,2.2vw,28px);
  background:var(--panel);
  border-radius:var(--radius);
}
.panel__head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:12px;margin-bottom:14px;
  border-bottom:1px solid rgb(159 182 171 / .16);
}
.panel__title{
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--moss);
}
.glass{
  padding:clamp(14px,2vw,22px);
  background:var(--glass-40);
  border:1px solid var(--line);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.stat{display:flex;flex-direction:column;gap:2px}
.stat__k{font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.1em;color:var(--moss)}
.stat__v{font-family:var(--font-mono);font-size:1.375rem;line-height:1.2;letter-spacing:.02em;color:var(--mist)}
.stat__v--cyan{color:var(--cyan)}
.stat__v--orange{color:var(--orange)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border:1px solid var(--line);border-radius:999px;
  font-family:var(--font-mono);font-size:.625rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--moss);
}
.tag--cyan{color:var(--cyan);border-color:var(--cyan-40);background:var(--cyan-08)}
.tag--orange{color:var(--orange);border-color:var(--orange-45);background:var(--orange-10)}

/* ---------- 10. buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;
  border:1px solid transparent;border-radius:var(--radius);
  font-size:.875rem;font-weight:600;letter-spacing:.04em;line-height:1.2;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease);
}
.btn--primary{background:var(--cyan);color:#04120E}
.btn--primary:hover{background:#59F6D6}
.btn--ghost{background:transparent;border-color:var(--cyan-40);color:var(--cyan)}
.btn--ghost:hover{background:var(--cyan-08);border-color:var(--cyan)}
.btn--sm{padding:8px 14px;font-size:.8125rem}
.btn:active{transform:translateY(1px)}

/* ---------- 11. breadcrumbs ---------- */
.crumbs{padding-block:16px;border-bottom:1px solid var(--line)}
.crumbs__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.1em;color:var(--moss);
}
.crumbs__list li{display:flex;align-items:center;gap:8px}
.crumbs__list li + li::before{content:"/";color:rgb(159 182 171 / .45)}
.crumbs__a{color:var(--moss);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.crumbs__a:hover{color:var(--cyan);border-bottom-color:var(--cyan-40)}
.crumbs [aria-current="page"]{color:var(--mist)}

/* ---------- 12. media frames ---------- */
.media{
  position:relative;isolation:isolate;overflow:hidden;
  border-radius:var(--radius);
  background:linear-gradient(140deg,var(--panel),var(--char));
}
.media::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,transparent 44%,rgb(8 19 15 / .74));
}
.media img{width:100%;height:100%;object-fit:cover;object-position:center}
.media--21x9{aspect-ratio:21 / 9}
.media--16x9{aspect-ratio:16 / 9}
.media--4x3{aspect-ratio:4 / 3}
.media__cap{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.1em;color:var(--mist);
}

/* ---------- 13. chapter index ---------- */
.chapter{padding-block:4px}
.chapter__title{
  font-family:var(--font-mono);font-size:.625rem;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--moss);
  margin-bottom:10px;
}
.chapter__list{display:flex;flex-direction:column;gap:2px}
.chapter__link{
  display:flex;align-items:baseline;gap:10px;
  padding:8px 10px;
  border-left:2px solid transparent;
  font-size:.875rem;color:var(--moss);
  transition:color .24s var(--ease),border-color .24s var(--ease),background-color .24s var(--ease);
}
.chapter__link .mono{font-size:.625rem;color:rgb(159 182 171 / .6)}
.chapter__link:hover{color:var(--mist);background:var(--glass-40)}
.chapter__link[aria-current="true"]{
  color:var(--cyan);border-left-color:var(--cyan);background:var(--cyan-08);
}
.chapter__link[aria-current="true"] .mono{color:var(--cyan)}

/* ---------- 14. reveal ---------- */
@media (prefers-reduced-motion:no-preference){
  .js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
  .js [data-reveal].is-in{opacity:1;transform:none}
}

/* ---------- 15. responsive ---------- */
@media (max-width:1080px){
  .cmdbar__inner{flex-wrap:wrap;gap:10px;min-height:0;padding-block:10px}
  .brand{order:1;margin-right:auto}
  .cmdbar__meta{order:2;margin-left:auto;gap:6px}
  .navToggle{display:inline-flex;order:9}
  .cmdnav{
    order:3;flex:1 0 100%;
    margin:0;display:none;
    padding-top:6px;border-top:1px solid var(--line);
  }
  .cmdnav[data-open]{display:block;animation:navIn .22s var(--ease) both}
  .cmdnav__list{flex-direction:column;align-items:stretch;gap:0}
  .cmdnav__item{width:100%}
  .cmdnav__link{
    display:flex;width:100%;
    padding:12px 8px;
    font-size:.9375rem;
    border-bottom:1px solid var(--line-soft);
    border-radius:0;
  }
  .cmdnav__link[aria-current="page"]{background:var(--cyan-08)}
  .cmdnav__link[aria-current="page"]::after{
    left:0;right:auto;top:11px;bottom:11px;height:auto;width:2px;
  }
  .sitefoot__top{grid-template-columns:1fr;gap:32px}
  .sitefoot__slash{width:70%;opacity:.55}
  .grid--453,.grid--split{grid-template-columns:1fr}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@keyframes navIn{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:none}
}

@media (max-width:780px){
  .grid--2,.grid--3{grid-template-columns:1fr}
  .sitefoot__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 24px}
  .sitefoot__base{flex-direction:column;align-items:flex-start;gap:12px}
  .toTop{margin-left:0}
}

@media (max-width:680px){
  .statusPill,.subChip{display:none}
  .brand__sub{display:none}
  .btn--sm{padding:8px 12px;font-size:.75rem}
  .navToggle{padding:8px 10px}
  .navToggle__label{display:none}
  .panel{padding:16px}
  .footnote{font-size:.78125rem}
}

@media (max-width:420px){
  .sitefoot__cols{grid-template-columns:1fr}
  .brand__name{font-size:1rem;letter-spacing:.08em}
}

/* ---------- 16. reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .statusPill__dot{animation:none;opacity:1;transform:none}
  .js [data-reveal]{opacity:1;transform:none}
}