/* =============================================================
   亚博赛场 · 共享站点样式 /assets/site.css
   1 令牌  2 重置  3 排版  4 布局  5 通用组件
   6 头部  7 页脚  8 媒体容器  9 浅色主题  10 响应式  11 动效与无障碍
   ============================================================= */

/* ---------- 1 令牌 ---------- */
:root{
  --ink-900:#071A2C;
  --ink-850:#0A1F33;
  --ink-800:#0A1622;
  --panel:#0F2C46;
  --panel-2:#123252;
  --line:#1C3B58;
  --line-soft:#16334E;
  --cyan:#29F0DC;
  --orange:#FF8A3D;
  --green:#4CE0A0;
  --ice:#E9F3FA;
  --fog:#8BA3B8;
  --fog-dim:#4E6E8B;
  --paper:#F2F6FA;
  --paper-line:#D8E3ED;

  --font-display:"Barlow Condensed","Oswald","Arial Narrow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono",SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --shell:1320px;
  --gutter:clamp(16px,4vw,48px);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --radius-pill:999px;
}

/* ---------- 2 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;
  background-color:var(--ink-900);
  background-image:
    linear-gradient(to right,rgba(28,59,88,.26) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(28,59,88,.26) 1px,transparent 1px);
  background-size:96px 96px;
  background-position:center top;
  color:var(--ice);
  font-family:var(--font-body);
  font-size:clamp(15.5px,1.02vw,17px);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{display:block;max-width:100%}
img{height:auto}
button,input,select,textarea{font:inherit;color:inherit}
hr{border:0}
#main-content{display:block;scroll-margin-top:130px}

/* ---------- 3 排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.15;
  color:var(--ice);
  margin:0 0 .55em;
}
h1{font-size:clamp(34px,6.2vw,72px)}
h2{font-size:clamp(26px,3.6vw,48px)}
h3{font-size:clamp(20px,2.2vw,28px)}
h4{font-size:clamp(17px,1.6vw,20px)}
p{margin:0 0 1.05em;max-width:68ch}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
li{margin-bottom:.4em}
a{color:var(--cyan);text-decoration:none;transition:color .15s ease}
a:hover{color:#7CF7EB}
strong{color:var(--ice)}
small{font-size:.86em;color:var(--fog)}

/* ---------- 4 布局 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(46px,7vw,104px)}
.section--tight{padding-block:clamp(26px,4vw,56px)}
.section--panel{background:var(--ink-850);border-block:1px solid var(--line)}

.grid{display:grid;gap:clamp(16px,2.5vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}

.rail{display:grid;grid-template-columns:clamp(52px,7vw,96px) minmax(0,1fr);gap:clamp(14px,2.5vw,36px)}
.rail__idx{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.14em;
  color:var(--cyan);
  padding-top:.55em;
  margin:0;
}

/* ---------- 5 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 22px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  background:transparent;
  color:var(--ice);
  font-family:var(--font-body);
  font-size:15px;font-weight:600;line-height:1.2;
  text-decoration:none;cursor:pointer;
  transition:background-color .15s ease,color .15s ease,border-color .15s ease,transform .15s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--cyan);border-color:var(--cyan);color:#04222B}
.btn--primary:hover{background:#69F7EA;border-color:#69F7EA;color:#04222B}
.btn--orange{background:var(--orange);border-color:var(--orange);color:#2A1204}
.btn--orange:hover{background:#FFA166;border-color:#FFA166;color:#2A1204}
.btn--ghost{background:rgba(15,44,70,.65);border-color:var(--line);color:var(--ice)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(41,240,220,.08)}
.btn--sm{padding:9px 16px;font-size:13.5px}
.btn--block{width:100%}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:rgba(15,44,70,.7);
  color:var(--fog);
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.06em;
  white-space:nowrap;
}
.tag--cyan{color:var(--cyan);border-color:rgba(41,240,220,.35);background:rgba(41,240,220,.08)}
.tag--orange{color:var(--orange);border-color:rgba(255,138,61,.35);background:rgba(255,138,61,.09)}
.tag--green{color:var(--green);border-color:rgba(76,224,160,.35);background:rgba(76,224,160,.09)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.18em;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:18px;height:1.5px;background:currentColor}

.index-num{
  margin:0;
  font-family:var(--font-mono);
  font-size:clamp(44px,9vw,112px);
  font-weight:500;line-height:.85;letter-spacing:-.04em;
  color:var(--cyan);
}

.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:clamp(18px,2.4vw,28px);
  transition:transform .15s ease,border-color .15s ease,background-color .15s ease;
}
.card:hover{transform:translateY(-2px);border-color:#2C527B;background:var(--panel-2)}

.stat{display:flex;flex-direction:column;gap:6px}
.stat__value{font-family:var(--font-mono);font-size:clamp(28px,4vw,48px);line-height:1;letter-spacing:-.02em;color:var(--ice)}
.stat__label{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--fog)}

.prose{max-width:68ch}
.prose h2{font-size:clamp(22px,2.6vw,32px);margin-top:1.6em}
.prose h3{font-size:clamp(18px,2vw,22px);margin-top:1.4em}
.prose a{color:var(--cyan);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.22em;text-decoration-color:rgba(41,240,220,.45)}
.prose hr{border-top:1px solid var(--line);margin:2em 0}
.prose code{font-family:var(--font-mono);font-size:.92em;background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:.1em .42em}
.prose blockquote{margin:1.6em 0;padding:2px 0 2px 20px;border-left:2px solid var(--cyan);color:var(--fog)}

.crumbs{margin:0 0 clamp(16px,2vw,26px);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:0;padding:0;list-style:none}
.crumbs__item{display:inline-flex;align-items:center;gap:10px;color:var(--fog-dim);margin:0}
.crumbs__item + .crumbs__item::before{content:"/";color:var(--line)}
.crumbs__link{color:var(--fog)}
.crumbs__link:hover{color:var(--cyan);text-decoration:none}
.crumbs__item[aria-current="page"]{color:var(--ice)}

/* ---------- 6 头部 ---------- */
.skip-link{
  position:absolute;top:0;left:0;z-index:120;
  display:inline-block;
  padding:12px 20px;
  background:var(--cyan);color:#04222B;
  border-radius:0 0 14px 0;
  font-size:14px;font-weight:700;
  text-decoration:none;
  transform:translateY(-130%);
  transition:transform .16s ease;
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);text-decoration:none}

.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,26,44,.95);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.site-header::before{
  content:"";display:block;height:3px;
  background:linear-gradient(90deg,var(--cyan) 0 36%,var(--orange) 36% 58%,var(--line) 58% 100%);
}
.cmdbar__inner{display:flex;align-items:center;gap:clamp(12px,2vw,28px);min-height:66px}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ice);text-decoration:none}
.brand:hover{color:var(--ice);text-decoration:none}
.brand__mark{
  position:relative;
  display:grid;place-items:center;
  width:38px;height:38px;flex:0 0 auto;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  color:var(--cyan);
  font-family:var(--font-display);
  font-size:20px;font-weight:700;line-height:1;
}
.brand__mark::after{content:"";position:absolute;top:-3px;right:-3px;width:8px;height:8px;border-radius:50%;background:var(--orange)}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__name{font-family:var(--font-display);font-size:19px;font-weight:700;letter-spacing:.02em}
.brand__sub{margin-top:4px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;color:var(--fog)}

.cmdnav{flex:1 1 auto;min-width:0}
.cmdnav__list{
  display:flex;align-items:center;justify-content:flex-end;gap:2px;
  margin:0;padding:0;list-style:none;
  overflow-x:auto;scrollbar-width:none;
}
.cmdnav__list::-webkit-scrollbar{display:none}
.cmdnav__item{flex:0 0 auto;margin:0}
.cmdnav__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:8px;
  padding:10px 13px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  color:var(--fog);
  font-size:14.5px;font-weight:500;
  white-space:nowrap;text-decoration:none;
  transition:color .15s ease,background-color .15s ease,border-color .15s ease;
}
.cmdnav__link:hover{color:var(--ice);background:rgba(15,44,70,.9);border-color:var(--line);text-decoration:none}
.cmdnav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--fog-dim)}
.cmdnav__link:hover .cmdnav__idx{color:var(--cyan)}
.cmdnav__label{display:inline-block}
.cmdnav__link[aria-current="page"]{
  color:var(--ice);
  background:rgba(41,240,220,.08);
  border-color:rgba(41,240,220,.28);
}
.cmdnav__link[aria-current="page"] .cmdnav__idx{color:var(--cyan)}
.cmdnav__link[aria-current="page"]::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  border-radius:2px;background:var(--cyan);
}

.cmdbar__actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.navtoggle{
  display:none;align-items:center;gap:9px;
  padding:10px 14px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  color:var(--ice);
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.1em;
  cursor:pointer;
  transition:border-color .15s ease,color .15s ease,background-color .15s ease;
}
.navtoggle:hover{border-color:var(--cyan);color:var(--cyan)}
.navtoggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.navtoggle__bars span{display:block;height:1.5px;background:currentColor;border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.navtoggle__bars span:nth-child(2){width:70%}
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(2){opacity:0}
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
.navtoggle__text{white-space:nowrap}

.statusbar{border-top:1px solid var(--line);background:rgba(10,31,51,.72)}
.statusbar__inner{
  display:flex;align-items:center;gap:12px;
  min-height:34px;
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.06em;
  color:var(--fog);
}
.statusbar__dot{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 4px rgba(76,224,160,.14);
  animation:yabo-pulse 2.6s ease-in-out infinite;
}
@keyframes yabo-pulse{0%,100%{opacity:1}50%{opacity:.32}}
.statusbar__text{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.statusbar__hint{margin-left:auto;color:var(--fog-dim);white-space:nowrap}

.progress{height:2px;background:transparent}
.progress__bar{
  display:block;width:100%;height:100%;
  background:linear-gradient(90deg,var(--orange),var(--cyan));
  transform:scaleX(0);
  transform-origin:0 50%;
}

/* ---------- 7 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(40px,6vw,84px);
  background:var(--ink-850);
  border-top:1px solid var(--line);
  color:var(--fog);
  font-size:14.5px;
}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;width:min(280px,38%);height:2px;background:var(--cyan)}

.footer__top{
  display:grid;
  grid-template-columns:minmax(200px,.85fr) minmax(0,2fr);
  gap:clamp(24px,4vw,64px);
  padding-block:clamp(34px,5vw,62px) clamp(22px,3vw,40px);
}
.footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.footer__mark{
  display:grid;place-items:center;
  width:40px;height:40px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  color:var(--cyan);
  font-family:var(--font-display);font-size:21px;font-weight:700;line-height:1;
}
.footer__name{margin:0;font-family:var(--font-display);font-size:26px;font-weight:700;letter-spacing:-.01em;color:var(--ice)}
.footer__tag{margin:0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--fog-dim)}

.footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.footer__col{display:flex;flex-direction:column;gap:12px}
.footer__col-title{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.16em;
  color:var(--cyan);
}
.footer__list{display:flex;flex-direction:column;gap:9px;margin:0;padding:0;list-style:none}
.footer__list li{margin:0}
.footer__link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--fog);font-size:14.5px;text-decoration:none;
  transition:color .15s ease;
}
.footer__link::before{content:"";width:5px;height:1.5px;background:currentColor;opacity:.5;flex:0 0 auto;transition:width .15s ease,background-color .15s ease,opacity .15s ease}
.footer__link:hover{color:var(--ice);text-decoration:none}
.footer__link:hover::before{width:12px;background:var(--orange);opacity:1}

.footer__contact{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.55fr);
  gap:clamp(18px,3vw,48px);
  padding-block:clamp(22px,3vw,38px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.footer__contact-head{display:flex;flex-direction:column;gap:12px}
.footer__contact-note{margin:0;font-size:13.5px;line-height:1.7;color:var(--fog);max-width:52ch}
.contactlist{margin:0;display:grid;gap:10px;align-content:start}
.contactlist__row{display:grid;grid-template-columns:88px minmax(0,1fr);gap:12px;align-items:baseline}
.contactlist__key{margin:0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--fog-dim)}
.contactlist__val{margin:0;color:var(--ice);font-family:var(--font-mono);font-size:13.5px;letter-spacing:.01em;word-break:break-word}

.footer__base{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;
  padding-block:clamp(18px,2.4vw,26px);
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.06em;
  color:var(--fog-dim);
}
.footer__icp{margin:0}
.footer__copy{margin:0 0 0 auto}

/* ---------- 8 媒体容器 ---------- */
.media{
  position:relative;display:block;width:100%;
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  aspect-ratio:16/9;
}
.media > img,.media__img{display:block;width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media--placeholder{
  background-color:var(--panel);
  background-image:
    radial-gradient(circle at 50% 100%,transparent 0 60px,rgba(41,240,220,.26) 60px 61px,transparent 61px),
    linear-gradient(to right,rgba(139,163,184,.16) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(139,163,184,.16) 1px,transparent 1px);
  background-size:100% 100%,48px 48px,48px 48px;
}
.media__caption{
  position:absolute;left:16px;right:16px;bottom:14px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--ice);
  text-shadow:0 1px 14px rgba(7,26,44,.92);
}
.media__tag{position:absolute;top:14px;left:14px}

/* ---------- 9 浅色长文主题 ---------- */
.theme-paper{background:var(--paper);color:var(--ink-800)}
.theme-paper h1,.theme-paper h2,.theme-paper h3,.theme-paper h4,.theme-paper .stat__value,.theme-paper strong{color:var(--ink-800)}
.theme-paper p,.theme-paper li{color:#22394B}
.theme-paper .prose a{color:#0B6E68;text-decoration-color:rgba(11,110,104,.4)}
.theme-paper .card{background:#FFFFFF;border-color:var(--paper-line);color:var(--ink-800)}
.theme-paper .card:hover{background:#FFFFFF;border-color:#B9CDDD}
.theme-paper .eyebrow,.theme-paper .rail__idx,.theme-paper .index-num{color:#0B6E68}
.theme-paper .tag{background:#FFFFFF;border-color:var(--paper-line);color:#4A6577}
.theme-paper .stat__label,.theme-paper .footer__col-title{color:#5C7A8E}
.theme-paper .crumbs__item{color:#7A93A6}
.theme-paper .crumbs__link{color:#4A6577}

/* ---------- 10 响应式 ---------- */
@media (max-width:1240px){
  .cmdnav__link{padding:10px 10px;font-size:14px}
  .cmdnav__idx{font-size:9.5px}
}
@media (max-width:1080px){
  .brand__sub{display:none}
  .brand__name{font-size:18px}
}
@media (max-width:980px){
  .navtoggle{display:inline-flex}
  .cmdnav{
    position:absolute;top:100%;left:0;right:0;z-index:70;
    background:var(--panel);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 50px -30px rgba(0,0,0,.9);
    max-height:calc(100dvh - 110px);
    overflow-y:auto;
    visibility:hidden;opacity:0;transform:translateY(-8px);
    transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
  }
  .cmdnav[data-open]{visibility:visible;opacity:1;transform:translateY(0)}
  .cmdnav__list{flex-direction:column;align-items:stretch;justify-content:flex-start;overflow:visible;gap:0}
  .cmdnav__item{border-bottom:1px solid var(--line-soft)}
  .cmdnav__item:last-child{border-bottom:0}
  .cmdnav__link{
    display:flex;width:100%;
    padding:15px var(--gutter);
    border:0;border-radius:0;
    font-size:16px;
    justify-content:flex-start;
  }
  .cmdnav__link:hover{background:rgba(41,240,220,.06);border:0}
  .cmdnav__link[aria-current="page"]{background:rgba(41,240,220,.07);border:0}
  .cmdnav__link[aria-current="page"]::after{
    left:0;right:auto;top:14px;bottom:14px;
    width:3px;height:auto;border-radius:0 3px 3px 0;
  }
  html[data-nav-open]{overflow:hidden}
  .statusbar__hint{display:none}
  .grid--2,.grid--3,.grid--7-5,.grid--8-4,.grid--5-7{grid-template-columns:minmax(0,1fr)}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__top{grid-template-columns:minmax(0,1fr)}
  .footer__contact{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:720px){
  .cmdbar__cta{display:none}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__copy{margin-left:0}
  .rail{grid-template-columns:minmax(0,1fr)}
  .rail__idx{padding-top:0}
}
@media (max-width:560px){
  .grid--4{grid-template-columns:minmax(0,1fr)}
  .footer__cols{grid-template-columns:minmax(0,1fr)}
  .contactlist__row{grid-template-columns:minmax(0,1fr);gap:4px}
  .cmdbar__inner{min-height:60px}
}

/* ---------- 11 动效与无障碍 ---------- */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.btn--primary:focus-visible,.skip-link:focus-visible{outline-color:var(--ice)}
.cmdnav__link:focus-visible{outline-offset:-2px}

[data-reveal]{transition:opacity .2s ease,transform .2s ease}
html.reveal-ready [data-reveal]{opacity:0;transform:translateY(8px)}
html.reveal-ready [data-reveal].is-revealed{opacity:1;transform:none}

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