/* ==========================================================
   /assets/site.css — 冠竞体育 CN 服务中心 共享外壳
   01 tokens  02 reset  03 base  04 shell  05 header  06 footer
   07 components  08 motion  09 responsive
   ========================================================== */

/* ---------- 01 tokens ---------- */
:root{
  --ink:#0B1A16;
  --moss:#1E3A30;
  --rock:#2B3331;
  --cool:#A9B6B1;
  --paper:#F2EDE3;
  --cyan:#3FF0C4;
  --orange:#FF6A2B;
  --lime:#8CFF6B;
  --alert:#FF4D5E;
  --void:#05100D;

  --line:rgba(63,240,196,.16);
  --line-soft:rgba(169,182,177,.16);

  --rail-w:88px;
  --topbar-h:64px;
  --gut:clamp(18px,4vw,56px);

  --font-display:"Arial Narrow","Helvetica Neue Condensed","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-body:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;

  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 02 reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--topbar-h) + 12px);}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0;}
ul[class],ol[class]{list-style:none;padding:0;}
a{color:inherit;text-decoration:none;}
img,svg,video{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}

/* ---------- 03 base ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  background:var(--ink);
  color:var(--paper);
  padding-top:var(--topbar-h);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4{line-height:1.25;font-weight:800;letter-spacing:.01em;}
p{max-width:38em;}
strong{color:var(--paper);font-weight:700;}
::selection{background:var(--cyan);color:var(--void);}

.lead{font-size:clamp(16px,1.35vw,18px);line-height:1.8;color:rgba(242,237,227,.86);max-width:38em;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--cyan);border:1px solid rgba(63,240,196,.35);
  padding:6px 10px;line-height:1.2;
}
.divider{height:1px;border:0;background:linear-gradient(90deg,var(--cyan),rgba(63,240,196,0));margin-block:clamp(28px,4vw,48px);}

/* ---------- 04 shell ---------- */
.container{width:100%;max-width:1280px;margin-inline:auto;padding-inline:var(--gut);}
.section{padding-block:clamp(40px,7vw,88px);}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:clamp(24px,4vw,40px);
}

/* ---------- 05 header ---------- */
.skip-link{
  position:fixed;top:8px;left:50%;z-index:200;
  transform:translate(-50%,-220%);
  padding:12px 22px;background:var(--lime);color:var(--void);
  font-weight:700;font-size:14px;letter-spacing:.06em;border-radius:2px;
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translate(-50%,0);}

.site-header{position:relative;z-index:100;}

/* 遮罩 */
.site-header::after{
  content:"";position:fixed;inset:0;z-index:86;
  background:rgba(5,16,13,.74);
  opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease);
}
.site-header[data-open]::after{opacity:1;pointer-events:auto;}

/* 左侧竖轨 */
.rail{
  display:none;
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);
  flex-direction:column;align-items:center;
  padding:22px 0 24px;
  background:linear-gradient(180deg,#0C1D18 0%,#091713 58%,var(--void) 100%);
  border-right:1px solid var(--line);
  z-index:60;
}
.rail::after{
  content:"";position:absolute;top:12%;right:-1px;width:1px;height:34%;
  background:linear-gradient(180deg,transparent,var(--cyan),transparent);
  opacity:.7;
}
.rail__brand{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  width:100%;padding:2px 0 16px;border-bottom:1px solid var(--line-soft);
}
.rail__mark{
  writing-mode:vertical-rl;text-orientation:upright;
  font-family:var(--font-display);font-weight:800;font-size:17px;
  letter-spacing:.14em;color:var(--paper);line-height:1;
}
.rail__sub{
  font-family:var(--font-mono);font-size:9px;letter-spacing:.12em;
  color:var(--cyan);opacity:.85;
}
.rail__nav{
  flex:1 1 auto;display:flex;justify-content:center;
  width:100%;min-height:0;
  overflow-y:auto;overflow-x:hidden;
  scrollbar-width:none;
}
.rail__nav::-webkit-scrollbar{display:none;}
.rail__list{display:flex;flex-direction:column;align-items:center;gap:clamp(8px,1.9vh,20px);padding-block:clamp(10px,2vh,22px);}
.rail__item{list-style:none;}
.rail__link{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:7px;
  padding:8px 6px;color:var(--cool);
  transition:color .2s var(--ease);
}
.rail__num{
  font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;
  color:rgba(169,182,177,.55);transition:color .2s var(--ease);
}
.rail__text{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:11px;letter-spacing:.18em;line-height:1.2;
}
.rail__link::before{
  content:"";position:absolute;left:-13px;top:50%;
  width:2px;height:0;background:var(--cyan);
  transform:translateY(-50%);
  transition:height .24s var(--ease);
}
.rail__link:hover{color:var(--paper);}
.rail__link:hover::before{height:22px;}
.rail__link[aria-current="page"]{color:var(--cyan);}
.rail__link[aria-current="page"] .rail__num{color:var(--cyan);}
.rail__link[aria-current="page"]::before{height:32px;box-shadow:0 0 12px rgba(63,240,196,.6);}

.rail__cta{
  display:flex;align-items:center;justify-content:center;
  width:36px;padding:16px 8px;
  background:var(--cyan);color:var(--void);
  font-size:12px;font-weight:700;letter-spacing:.16em;
  writing-mode:vertical-rl;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.rail__cta:hover{background:var(--lime);transform:translateY(-2px);}
.rail__ctaText{display:block;}

/* 移动顶栏 */
.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--topbar-h);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-inline:16px;
  background:rgba(8,21,18,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  z-index:90;
}
.topbar__brand{display:flex;align-items:baseline;gap:8px;min-width:0;}
.topbar__mark{
  font-family:var(--font-display);font-weight:800;font-size:17px;
  letter-spacing:.04em;color:var(--paper);white-space:nowrap;
}
.topbar__sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;
  color:var(--cyan);white-space:nowrap;
}
.nav-toggle{
  display:inline-flex;align-items:center;gap:9px;
  min-width:44px;min-height:44px;padding:0 10px;
  border:1px solid rgba(63,240,196,.32);color:var(--cyan);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{background:rgba(63,240,196,.1);}
.nav-toggle__box{display:flex;flex-direction:column;justify-content:center;gap:6px;width:18px;height:18px;}
.nav-toggle__bar{display:block;width:18px;height:2px;background:currentColor;transition:transform .24s var(--ease);}
.nav-toggle__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;}
.site-header[data-open] .nav-toggle__bar:first-child{transform:translateY(4px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bar:last-child{transform:translateY(-4px) rotate(-45deg);}

/* 抽屉 */
.drawer{
  position:fixed;top:var(--topbar-h);right:0;bottom:0;z-index:88;
  width:min(86vw,340px);
  background:linear-gradient(180deg,#0E211B 0%,#0A1915 100%);
  border-left:1px solid rgba(63,240,196,.22);
  transform:translateX(102%);
  visibility:hidden;
  overflow-y:auto;
  transition:transform .28s var(--ease),visibility .28s var(--ease);
}
.site-header[data-open] .drawer{transform:translateX(0);visibility:visible;}
.drawer__inner{padding:26px 22px 40px;display:flex;flex-direction:column;gap:18px;min-height:100%;}
.drawer__eyebrow{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;
  color:rgba(169,182,177,.7);text-transform:uppercase;
}
.drawer__nav{min-width:0;}
.drawer__list{display:flex;flex-direction:column;}
.drawer__item{list-style:none;}
.drawer__link{
  display:flex;align-items:baseline;gap:12px;
  min-height:48px;padding:12px 2px;
  border-bottom:1px solid var(--line-soft);
  font-size:17px;font-weight:600;color:var(--paper);
  transition:color .18s var(--ease);
}
.drawer__num{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--cool);}
.drawer__text{flex:1 1 auto;}
.drawer__link::after{content:"→";font-family:var(--font-mono);font-size:13px;color:var(--cyan);opacity:.45;}
.drawer__link:hover{color:var(--cyan);}
.drawer__link[aria-current="page"]{color:var(--cyan);}
.drawer__link[aria-current="page"] .drawer__num{color:var(--cyan);}
.drawer__link[aria-current="page"]::after{opacity:1;}
.drawer__cta{width:100%;margin-top:4px;}
.drawer__status{
  display:flex;align-items:center;gap:8px;margin-top:auto;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--cool);
}
.drawer__status::before{
  content:"";width:7px;height:7px;background:var(--lime);
  box-shadow:0 0 10px var(--lime);
}

/* ---------- 06 footer ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,8vw,96px);
  padding-block:clamp(36px,6vw,68px) 0;
  background:linear-gradient(180deg,#0B1A16 0%,#081512 52%,var(--void) 100%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;inset-block:0;right:-8%;width:44%;
  background:linear-gradient(205deg,rgba(63,240,196,.07),transparent 62%);
  clip-path:polygon(42% 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.foot__ticks{
  display:block;height:10px;max-width:1280px;
  margin:0 auto 30px;padding-inline:var(--gut);
  background-image:repeating-linear-gradient(90deg,rgba(63,240,196,.35) 0 1px,transparent 1px 22px);
  background-clip:content-box;
  background-origin:content-box;
}
.foot__main{
  position:relative;z-index:1;
  max-width:1280px;margin-inline:auto;padding-inline:var(--gut);
  padding-bottom:clamp(30px,5vw,52px);
  display:grid;grid-template-columns:1fr;gap:clamp(26px,4vw,44px);
}
.foot__lead{display:flex;flex-direction:column;align-items:flex-start;min-width:0;}
.foot__brand{display:block;}
.foot__mark{
  display:block;font-family:var(--font-display);font-weight:800;
  font-size:clamp(28px,4.4vw,40px);line-height:1;letter-spacing:.03em;color:var(--paper);
}
.foot__sub{
  display:block;margin-top:9px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--cyan);
}
.foot__tag{margin-top:18px;font-size:14px;letter-spacing:.1em;color:var(--cool);}
.foot__area{
  margin-top:6px;font-family:var(--font-mono);
  font-size:11px;letter-spacing:.1em;color:rgba(169,182,177,.68);
}
.foot__cta{margin-top:20px;}

.foot__nav{min-width:0;}
.foot__cols{display:grid;grid-template-columns:repeat(2,1fr);gap:22px 16px;}
.foot__col{min-width:0;}
.foot__title{
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);line-height:1.2;
}
.foot__title::before{content:"";width:14px;height:1px;background:var(--cyan);}
.foot__links{display:flex;flex-direction:column;gap:10px;}
.foot__link{
  display:inline-block;font-size:14px;color:var(--cool);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.foot__link:hover{color:var(--paper);transform:translateX(3px);}

.foot__contact{min-width:0;}
.foot__contactList{display:flex;flex-direction:column;}
.foot__contactRow{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;
  padding-block:10px;border-bottom:1px dashed var(--line-soft);
}
.foot__contactRow--block{align-items:flex-start;}
.foot__key{
  flex:0 0 34px;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.14em;color:rgba(169,182,177,.66);
}
.foot__val{font-size:13.5px;line-height:1.6;color:var(--paper);word-break:break-word;flex:1 1 60%;}
.foot__copy{
  min-height:34px;padding:6px 10px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  color:var(--cyan);border:1px solid rgba(63,240,196,.34);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.foot__copy:hover{background:rgba(63,240,196,.12);}
.foot__copy[data-copied="true"]{color:var(--lime);border-color:rgba(140,255,107,.6);}
.foot__copy[data-copied="false"]{color:var(--alert);border-color:rgba(255,77,94,.6);}
.foot__note{
  margin-top:14px;max-width:34em;
  font-size:12px;line-height:1.8;color:rgba(169,182,177,.72);
}

.foot__base{
  position:relative;z-index:1;
  max-width:1280px;margin-inline:auto;padding:18px var(--gut);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:rgba(169,182,177,.8);
}
.foot__copyright{margin:0;max-width:none;}
.foot__legal{display:flex;flex-wrap:wrap;gap:8px 18px;}
.foot__legal li{list-style:none;}
.foot__legal a{color:var(--cool);transition:color .18s var(--ease);}
.foot__legal a:hover{color:var(--cyan);}
.foot__icp{margin:0;margin-left:auto;max-width:none;color:rgba(169,182,177,.7);}
.foot__line{
  position:relative;z-index:1;
  max-width:1280px;margin-inline:auto;padding:0 var(--gut) 26px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;
  color:rgba(169,182,177,.48);
}

/* ---------- 07 components ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:44px;padding:0 20px;
  font-size:14px;font-weight:700;letter-spacing:.06em;
  border:1px solid transparent;border-radius:2px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:focus-visible{outline-offset:-4px;}
.btn--primary{background:var(--cyan);color:var(--void);}
.btn--primary:hover{background:var(--lime);}
.btn--orange{background:var(--orange);color:#1A0700;}
.btn--orange:hover{background:#FF854F;}
.btn--ghost{border-color:rgba(63,240,196,.45);color:var(--cyan);}
.btn--ghost:hover{background:rgba(63,240,196,.12);color:var(--paper);}

.panel{
  position:relative;
  background:var(--moss);
  border:1px solid var(--line-soft);
  padding:clamp(18px,3vw,30px);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%);
}
.panel--rock{background:var(--rock);}
.panel--void{background:var(--void);}

.media{
  position:relative;display:block;overflow:hidden;
  background:linear-gradient(160deg,#16281F 0%,#0B1A16 55%,var(--void) 100%);
  border:1px solid var(--line);
}
.media img{width:100%;height:100%;object-fit:cover;}
.media--wide{aspect-ratio:16/9;}
.media--photo{aspect-ratio:4/3;}
.media--square{aspect-ratio:1/1;}
.media--tall{aspect-ratio:3/4;}
.media__caption{
  padding-top:8px;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.08em;color:rgba(169,182,177,.8);
}
.media__tag{
  position:absolute;left:0;bottom:0;
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 10px;background:rgba(5,16,13,.82);
  border-top:1px solid var(--line);border-right:1px solid var(--line);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--cyan);
}

.stat{
  display:flex;flex-direction:column;gap:6px;
  padding:16px 18px;background:var(--rock);
  border-left:2px solid var(--cyan);
}
.stat__num{
  font-family:var(--font-mono);font-size:clamp(22px,3vw,32px);
  font-variant-numeric:tabular-nums;line-height:1.1;color:var(--lime);
}
.stat__label{
  font-family:var(--font-mono);font-size:11px;
  letter-spacing:.14em;color:var(--cool);
}

.timeline{position:relative;padding-left:28px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--cyan),rgba(63,240,196,.06));
}
.timeline__item{position:relative;padding-bottom:26px;}
.timeline__item::before{
  content:"";position:absolute;left:-28px;top:7px;
  width:13px;height:13px;background:var(--ink);
  border:1px solid var(--cyan);transform:rotate(45deg);
}
.timeline__num{
  font-family:var(--font-mono);font-size:11px;
  letter-spacing:.16em;color:var(--cyan);
}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  min-height:32px;padding:4px 12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--cool);border:1px solid rgba(169,182,177,.24);
  background:rgba(43,51,49,.6);
}
.chip[data-state="live"]{color:var(--lime);border-color:rgba(140,255,107,.45);}
.chip[data-state="locked"]{color:var(--orange);border-color:rgba(255,106,43,.5);}
.chip[data-state="alert"]{color:var(--alert);border-color:rgba(255,77,94,.5);}

.fold{border-bottom:1px solid var(--line-soft);}
.fold > summary{
  display:flex;align-items:center;gap:14px;
  min-height:44px;padding:18px 4px;
  list-style:none;cursor:pointer;font-weight:600;color:var(--paper);
  transition:color .18s var(--ease);
}
.fold > summary::-webkit-details-marker{display:none;}
.fold > summary::after{
  content:"+";margin-left:auto;
  font-family:var(--font-mono);font-size:16px;color:var(--cyan);
}
.fold[open] > summary{color:var(--cyan);}
.fold[open] > summary::after{content:"–";}
.fold__body{padding:0 4px 20px;font-size:15px;line-height:1.8;color:var(--cool);}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:18px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:rgba(169,182,177,.7);
}
.breadcrumb a{color:var(--cool);transition:color .18s var(--ease);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb__sep{color:rgba(63,240,196,.5);}
.breadcrumb [aria-current="page"]{color:var(--paper);}

.grid{display:grid;gap:clamp(16px,2.4vw,28px);grid-template-columns:1fr;}
.grid--2,.grid--3{grid-template-columns:1fr;}

/* 脚本注入元素 */
.scroll-progress{
  position:fixed;top:0;left:0;z-index:120;
  height:3px;width:0;pointer-events:none;
  background:linear-gradient(90deg,var(--cyan),var(--lime));
  box-shadow:0 0 10px rgba(63,240,196,.5);
  transition:width .1s linear;
}
.to-top{
  position:fixed;right:16px;bottom:18px;z-index:95;
  display:grid;place-items:center;width:44px;height:44px;
  background:rgba(30,58,48,.94);color:var(--cyan);
  border:1px solid rgba(63,240,196,.4);
  font-family:var(--font-mono);font-size:16px;line-height:1;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:rgba(63,240,196,.18);}

/* ---------- 08 motion ---------- */
html.has-reveal [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
html.has-reveal [data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 09 responsive ---------- */
@media (max-width:480px){
  .foot__cols{grid-template-columns:1fr 1fr;}
  .topbar__sub{display:none;}
}

@media (min-width:720px){
  .foot__main{grid-template-columns:1fr 1fr;}
  .foot__lead{grid-column:1 / -1;}
  .foot__cols{grid-template-columns:repeat(3,1fr);gap:20px;}
  .grid--2{grid-template-columns:repeat(2,1fr);}
  .grid--3{grid-template-columns:repeat(2,1fr);}
}

@media (min-width:1024px){
  html{scroll-padding-top:28px;}
  body{padding-top:0;padding-left:var(--rail-w);}
  body.nav-open{overflow:auto;}
  .rail{display:flex;}
  .topbar{display:none;}
  .drawer{display:none;}
  .site-header::after{display:none;}
  .scroll-progress{left:var(--rail-w);}
  .to-top{right:28px;bottom:28px;}
  .foot__main{grid-template-columns:1.1fr 1.5fr 1fr;}
  .foot__lead{grid-column:auto;}
  .grid--3{grid-template-columns:repeat(3,1fr);}
  .media--wide{aspect-ratio:16/9;}
}

@media (max-height:760px) and (min-width:1024px){
  .rail__list{gap:8px;}
  .rail__link{padding:5px 6px;}
  .rail__text{font-size:10px;letter-spacing:.14em;}
  .rail__brand{padding-bottom:12px;}
}

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