/* ========== 云开赛事 · Site Kit ========== */
:root{
  --c-night:#0B1E3D;
  --c-deep:#0E1A2B;
  --c-abyss:#071220;
  --c-green:#00FF88;
  --c-purple:#9B5DE5;
  --c-ice:#00D4FF;
  --c-white:#FFFFFF;
  --c-gray:#E0E5EC;
  --c-muted:#8892A8;
  --font-head:"Chakra Petch","Orbitron","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --radius-lg:26px;
  --radius-md:18px;
  --radius-pill:999px;
  --container-w:1220px;
  --gradient:linear-gradient(92deg,var(--c-green),var(--c-ice) 48%,var(--c-purple));
  --shadow-panel:0 18px 46px rgba(2,8,20,.42);
}

/* ========== Reset & Base ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  background:
    radial-gradient(720px 420px at 88% -5%, rgba(155,93,229,.22), transparent 65%),
    radial-gradient(560px 380px at -5% 18%, rgba(0,212,255,.16), transparent 60%),
    var(--c-night);
  color:var(--c-white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;display:block}
button{background:none;border:none;color:inherit;cursor:pointer;font:inherit}
input,textarea,select{font:inherit}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-family:var(--font-head);line-height:1.18;font-weight:800}
[hidden]{display:none!important}
::selection{background:var(--c-green);color:#04180f}
:focus-visible{outline:2px solid var(--c-green);outline-offset:3px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ========== Containers ========== */
.container{width:100%;max-width:var(--container-w);margin-inline:auto;padding-inline:clamp(20px,4vw,36px)}
.container-narrow{width:100%;max-width:860px;margin-inline:auto;padding-inline:clamp(20px,4vw,36px)}

/* ========== Skip Link ========== */
.skip-link{
  position:fixed;top:14px;left:14px;z-index:400;
  background:var(--c-green);color:#04180f;font-weight:700;font-size:14px;
  padding:10px 18px;border-radius:var(--radius-pill);
  box-shadow:0 8px 24px rgba(0,255,136,.35);
  transform:translateY(-160%);opacity:0;
  transition:transform .25s ease,opacity .25s ease;
}
.skip-link:focus{opacity:1;transform:translateY(0)}

/* ========== Header ========== */
.site-header{
  position:sticky;top:12px;z-index:100;
  padding-inline:clamp(12px,2.5vw,28px);
  pointer-events:none;
}
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:100%;z-index:210;
  transform:scaleX(0);transform-origin:0 50%;
  background:var(--gradient);
  pointer-events:none;
  will-change:transform;
}
.nav-island{
  position:relative;max-width:1280px;margin-inline:auto;
  display:flex;align-items:center;gap:14px;flex-wrap:nowrap;
  padding:10px 12px 10px 16px;
  border-radius:var(--radius-pill);
  background:rgba(9,18,38,.84);
  border:1px solid rgba(0,212,255,.22);
  box-shadow:0 16px 40px rgba(2,8,20,.42);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  pointer-events:auto;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.nav-island:hover{
  border-color:rgba(0,212,255,.5);
  box-shadow:0 18px 48px rgba(2,8,20,.5),0 0 0 1px rgba(0,255,136,.15);
}
.brand{display:flex;align-items:center;gap:12px;color:#fff;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:14px;
  background:linear-gradient(145deg,var(--c-ice),var(--c-purple));
  color:#071d2b;
  font-family:var(--font-head);font-weight:900;font-size:21px;line-height:1;
  transform:skewX(-6deg) rotate(-3deg);
  box-shadow:0 8px 20px rgba(0,212,255,.25);
}
.brand-copy{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-family:var(--font-head);font-weight:800;font-size:20px;letter-spacing:.08em}
.brand-sub{font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--c-muted)}

.nav-toggle{
  display:none;
  align-items:center;gap:8px;margin-left:auto;
  padding:8px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  color:var(--c-gray);font-size:13px;font-weight:600;
  transition:border-color .25s ease,color .25s ease,background .25s ease;
}
.nav-toggle:hover{border-color:var(--c-green);color:#fff;background:rgba(0,212,255,.08)}
.nav-toggle-box{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:16px}
.nav-toggle-box span{display:block;height:2px;width:16px;background:currentColor;border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.site-nav{margin-inline:auto;order:0}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item>a{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:42px;padding:10px 16px;
  border-radius:var(--radius-pill);
  color:var(--c-gray);font-size:15px;font-weight:500;line-height:1.2;
  transition:color .25s ease,background .25s ease,transform .25s ease,box-shadow .25s ease;
}
.nav-item>a:hover{background:rgba(0,212,255,.12);color:#fff;transform:translateY(-1px)}
.nav-item>a:active{transform:translateY(0)}
.nav-item>a[aria-current="page"]{
  background:linear-gradient(90deg,rgba(0,255,136,.18),rgba(0,212,255,.08));
  color:var(--c-green);
  box-shadow:inset 0 0 0 1px rgba(0,255,136,.35);
}
.nav-item>a[aria-current="page"]::after{
  content:"";position:absolute;bottom:4px;left:50%;
  width:4px;height:2px;border-radius:2px;
  background:var(--c-green);
  transform:translateX(-50%);
}

.header-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;order:2}
.header-dl{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 12px;border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.14);
  color:var(--c-gray);font-size:12.5px;font-weight:600;
  transition:color .25s ease,border-color .25s ease,background .25s ease;
}
.header-dl::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--c-ice);box-shadow:0 0 8px rgba(0,212,255,.8);
  transition:background .25s ease,box-shadow .25s ease;
}
.header-dl:hover{border-color:var(--c-green);color:#fff;background:rgba(0,255,136,.06)}
.header-dl:hover::before{background:var(--c-green);box-shadow:0 0 8px rgba(0,255,136,.8)}

.btn-app{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 18px;border-radius:var(--radius-pill);
  background:var(--c-green);color:#021911;
  font-family:var(--font-head);font-weight:800;font-size:14px;line-height:1;
  box-shadow:0 0 0 1px rgba(0,255,136,.45),0 8px 24px rgba(0,255,136,.28);
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease;
}
.btn-app:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,255,136,.7),0 14px 30px rgba(0,255,136,.4)}
.btn-app-icon{
  width:0;height:0;
  border-left:5px solid transparent;border-right:5px solid transparent;
  border-top:6px solid #021911;border-radius:2px;
}

/* ========== Buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;border-radius:var(--radius-pill);
  font-family:var(--font-head);font-weight:800;font-size:15px;line-height:1;
  border:1px solid transparent;text-align:center;white-space:nowrap;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--c-green);color:#021911;box-shadow:0 0 0 1px rgba(0,255,136,.4),0 10px 28px rgba(0,255,136,.24)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,255,136,.7),0 16px 34px rgba(0,255,136,.32)}
.btn-ghost{background:transparent;color:var(--c-ice);border-color:rgba(0,212,255,.5)}
.btn-ghost:hover{background:rgba(0,212,255,.12);border-color:var(--c-ice);transform:translateY(-2px)}
.btn-purple{background:var(--c-purple);color:#fff;box-shadow:0 10px 26px rgba(155,93,229,.3)}
.btn-purple:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(155,93,229,.4)}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-sm{padding:9px 16px;font-size:13px}

/* ========== Section ========== */
.section{position:relative;padding-block:clamp(48px,8vw,96px)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:34px;padding-bottom:18px;
  border-bottom:1px solid rgba(0,212,255,.16);
}
.section-kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-head);font-size:13px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--c-green);
}
.section-kicker::before{content:"";width:30px;height:2px;background:var(--c-green);border-radius:2px}
.section-title{font-size:clamp(28px,4.5vw,46px);font-weight:900;margin-top:10px;line-height:1.1;transform:skewX(-5deg)}
.section-desc{max-width:560px;color:var(--c-muted);font-size:15px;line-height:1.75}
.section-link{display:inline-flex;align-items:center;gap:8px;color:var(--c-ice);font-weight:600;font-size:14px}
.section-link::after{content:"→";transition:transform .25s ease}
.section-link:hover{color:var(--c-green)}
.section-link:hover::after{transform:translateX(4px)}

/* ========== Grid ========== */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:980px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
}

/* ========== Tags ========== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(155,93,229,.14);
  border:1px solid rgba(155,93,229,.45);
  color:#D7BDF7;font-size:12px;font-weight:600;letter-spacing:.04em;
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-purple)}
.tag-green{background:rgba(0,255,136,.1);border-color:rgba(0,255,136,.4);color:#8FFFC5}
.tag-green::before{background:var(--c-green)}
.tag-ice{background:rgba(0,212,255,.1);border-color:rgba(0,212,255,.4);color:#A5E9FF}
.tag-ice::before{background:var(--c-ice)}

/* ========== Breadcrumb ========== */
.breadcrumb{
  display:flex;flex-wrap:wrap;gap:6px 10px;align-items:center;
  font-size:13.5px;color:var(--c-muted);margin-bottom:20px;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:var(--c-muted);opacity:.5}
.breadcrumb a{color:var(--c-ice);transition:color .2s ease}
.breadcrumb a:hover{color:var(--c-green)}
.breadcrumb [aria-current="page"]{color:var(--c-gray);font-weight:600}

/* ========== Page Hero ========== */
.page-hero{
  position:relative;
  padding:clamp(130px,18vw,180px) 0 clamp(40px,6vw,64px);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:0;right:0;width:56%;height:100%;
  background:linear-gradient(-20deg,rgba(155,93,229,.2),transparent 55%);
  clip-path:polygon(35% 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.page-hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-head);font-size:13px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--c-green);
}
.page-hero-eyebrow::before{content:"";width:32px;height:2px;background:var(--c-green)}
.page-hero-title{
  max-width:900px;
  font-family:var(--font-head);font-size:clamp(38px,7vw,76px);font-weight:900;
  line-height:1.04;letter-spacing:-.01em;transform:skewX(-5deg);margin-top:14px;
}
.page-hero-title span{color:transparent;background:linear-gradient(90deg,var(--c-green),var(--c-ice));-webkit-background-clip:text;background-clip:text}
.page-hero-lead{max-width:640px;margin-top:20px;color:var(--c-gray);font-size:17px;line-height:1.85}
.page-hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ========== Panels & Cards ========== */
.panel{
  position:relative;
  padding:clamp(24px,4vw,48px);
  border-radius:var(--radius-lg);
  background:rgba(14,26,43,.72);
  border:1px solid rgba(0,212,255,.14);
  box-shadow:var(--shadow-panel);
}
.info-card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:28px;border-radius:22px;
  background:linear-gradient(160deg,rgba(14,26,43,.88),rgba(11,30,61,.68));
  border:1px solid rgba(255,255,255,.07);
  overflow:hidden;
  box-shadow:0 10px 28px rgba(4,8,18,.28);
  transition:transform .3s ease,border-color .3s ease,background .3s ease;
}
.info-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:var(--gradient);
  transform:scaleX(0);transform-origin:left;
  transition:transform .35s ease;
}
.info-card:hover{
  transform:translateY(-5px);
  border-color:rgba(0,212,255,.35);
  background:linear-gradient(160deg,rgba(14,26,43,.96),rgba(11,30,61,.82));
}
.info-card:hover::after{transform:scaleX(1)}
.info-card-title{font-family:var(--font-head);font-weight:800;font-size:19px;color:#fff;line-height:1.35}
.info-card-text{color:var(--c-muted);font-size:14px;line-height:1.7}
.info-card-link{margin-top:auto;display:inline-flex;align-items:center;gap:8px;color:var(--c-ice);font-size:14px;font-weight:600}
.info-card-link::after{content:"→";transition:transform .25s ease}
.info-card-link:hover{color:var(--c-green)}
.info-card-link:hover::after{transform:translateX(4px)}

/* ========== Media Placeholder ========== */
.media{
  position:relative;overflow:hidden;border-radius:20px;
  background:linear-gradient(140deg,rgba(0,212,255,.06),rgba(155,93,229,.14) 60%,rgba(0,255,136,.08));
  border:1px solid rgba(255,255,255,.08);
}
.media::before{
  content:"";position:absolute;inset:0;
  background:var(--gradient);opacity:.05;mix-blend-mode:screen;
  pointer-events:none;
}
.media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.media-16x9{padding-bottom:56.25%}
.media-21x9{padding-bottom:42.85%}
.media-4x3{padding-bottom:75%}
.media-1x1{padding-bottom:100%}
.media-caption{
  position:absolute;left:14px;right:14px;bottom:14px;z-index:2;
  font-size:12.5px;color:var(--c-white);
  background:rgba(6,14,28,.7);
  padding:8px 12px;border-radius:12px;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}

/* ========== Prose ========== */
.prose{max-width:760px;color:var(--c-gray);font-size:16px;line-height:1.9}
.prose h2,.prose h3{color:#fff;margin:1.7em 0 .5em}
.prose h2{font-size:24px}
.prose h3{font-size:20px}
.prose p{margin:.9em 0}
.prose a{color:var(--c-ice);text-decoration:underline;text-underline-offset:4px;transition:color .2s ease}
.prose a:hover{color:var(--c-green)}

/* ========== Utilities ========== */
.divider-gradient{
  height:1px;border:0;margin:32px 0;opacity:.7;
  background:linear-gradient(90deg,transparent,var(--c-ice),var(--c-purple),transparent);
}
.bg-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,212,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,212,255,.05) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(85% 70% at 50% 30%,#000,transparent);
  -webkit-mask-image:radial-gradient(85% 70% at 50% 30%,#000,transparent);
}
.text-gradient{
  background:linear-gradient(90deg,var(--c-green),var(--c-ice));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ========== React Reveal ========== */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ========== Footer ========== */
.site-footer{
  position:relative;margin-top:80px;
  background:var(--c-deep);
  color:var(--c-gray);
  border-top:1px solid rgba(0,212,255,.2);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto;
  height:280px;pointer-events:none;
  background:
    radial-gradient(420px 220px at 15% 0%,rgba(0,212,255,.14),transparent 70%),
    radial-gradient(520px 240px at 85% 0%,rgba(155,93,229,.16),transparent 70%);
}
.site-footer-bg{
  position:absolute;right:-.08em;bottom:-.22em;
  font-family:var(--font-head);font-weight:900;
  font-size:clamp(80px,18vw,220px);line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(0,212,255,.14);
  text-transform:uppercase;letter-spacing:.08em;
  pointer-events:none;user-select:none;
}
.site-footer-inner{
  position:relative;z-index:1;
  max-width:var(--container-w);margin-inline:auto;
  padding:72px 24px 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .7fr .7fr 1.1fr;
  gap:44px 40px;
  padding-bottom:48px;
}
.footer-brand{display:inline-flex;align-items:center;gap:12px;color:#fff}
.footer-desc{margin-top:18px;max-width:340px;color:var(--c-muted);font-size:14.5px;line-height:1.8}
.footer-status{
  display:inline-flex;align-items:center;gap:10px;margin-top:20px;
  padding:8px 14px;border-radius:var(--radius-pill);
  background:rgba(0,255,136,.08);
  border:1px solid rgba(0,255,136,.3);
  color:var(--c-green);font-size:12.5px;font-weight:600;
}
.footer-status-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--c-green);
  box-shadow:0 0 10px rgba(0,255,136,.9);
  animation:statusPulse 2.4s ease-in-out infinite;
}
@keyframes statusPulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.55;transform:scale(.8)}
}
.footer-col-title{
  position:relative;font-family:var(--font-head);font-size:14px;
  font-weight:700;letter-spacing:.1em;color:#fff;
  margin-bottom:18px;padding-left:12px;transform:skewX(-5deg);
}
.footer-col-title::before{
  content:"";position:absolute;left:0;top:50%;
  width:4px;height:14px;border-radius:2px;
  background:var(--c-green);
  transform:translateY(-50%);
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  position:relative;display:inline-flex;width:fit-content;
  color:var(--c-muted);font-size:14px;
  transition:color .25s ease,transform .25s ease;
}
.footer-links a::before{
  content:"";position:absolute;left:0;bottom:0;
  width:0;height:1px;background:var(--c-green);
  transition:width .25s ease;
}
.footer-links a:hover{color:var(--c-green);transform:translateX(3px)}
.footer-links a:hover::before{width:100%}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact li{display:flex;flex-direction:column;gap:2px;font-size:14px;color:var(--c-gray)}
.footer-contact-label{
  font-family:var(--font-head);font-size:11px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--c-muted);
}
.footer-contact a{color:var(--c-ice);transition:color .25s ease}
.footer-contact a:hover{color:var(--c-green)}
.footer-bottom{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  color:var(--c-muted);font-size:13px;text-align:center;
}
.footer-copy{color:var(--c-muted)}
.footer-legal{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.footer-legal a{color:var(--c-muted);transition:color .2s ease}
.footer-legal a:hover{color:var(--c-green)}
.footer-truth{color:var(--c-muted);font-size:12.5px}

/* ========== Responsive ========== */
@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    order:3;width:100%;display:none;
    margin-inline:0;padding-top:12px;
  }
  .site-nav[data-open="true"]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-item>a{justify-content:flex-start;width:100%;min-height:48px;padding:14px 18px;border-radius:14px}
  .nav-island{flex-wrap:wrap;border-radius:24px;padding:10px}
  .header-actions{margin-left:auto}
  .header-dl{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand-col{grid-column:1/-1}
}
@media (max-width:640px){
  .brand-name{font-size:17px}
  .brand-sub{font-size:9.5px}
  .btn-app{padding:10px 14px;font-size:13px}
  .nav-toggle-text{font-size:12px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-brand-col{grid-column:auto}
  .site-footer-inner{padding-top:52px}
}

/* ========== Reduced Motion ========== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
    scroll-behavior:auto!important;
  }
  [data-reveal]{opacity:1;transform:none;transition:none}
  .footer-status-dot{animation:none}
}