/* ==========================================================================
   KAIYUN赛事 — 共享站点样式 /assets/site.css
   设计基因：夜赛深蓝底 · 斜切轮次轴 · 纸张叠层展签 · 等宽数据数字
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:24px;
}
body,h1,h2,h3,h4,h5,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}
address{font-style:normal}
table{border-collapse:collapse;width:100%}

/* ---------- 2. Tokens ---------- */
:root{
  --night:#0A1526;
  --stand:#12253D;
  --field:#17A26B;
  --turf:#4FD1A5;
  --signal:#FF7A29;
  --cyan:#35C2D6;
  --label:#EDF3EE;
  --muted:#8FA6A0;
  --line:#2C405A;
  --card:#E2503F;

  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --wrap:1200px;
  --gutter:clamp(16px,4vw,40px);
  --skew:-6deg;
  --ease:160ms ease;
}

/* ---------- 3. Base ---------- */
body{
  background:var(--night);
  color:var(--label);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--label)}
h1{font-size:clamp(32px,5vw,64px)}
h2{font-size:clamp(26px,3.4vw,44px)}
h3{font-size:clamp(20px,2.1vw,28px)}
h4{font-size:clamp(17px,1.5vw,22px)}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
::selection{background:var(--field);color:#04170F}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:0}
.label{
  display:inline-flex;align-items:center;gap:.5em;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);
  border:1px solid var(--line);
  padding:4px 10px;
  background:rgba(18,37,61,.7);
}

/* ---------- 4. Layout ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.grid-12{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.4vw,28px);
}

/* ---------- 5. Skip link ---------- */
.skip-link{
  position:absolute;
  left:var(--gutter);
  top:-72px;
  z-index:200;
  display:inline-block;
  padding:10px 18px;
  background:var(--field);
  color:#04170F;
  font-size:14px;
  font-weight:800;
  letter-spacing:.04em;
  transition:top var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 6. Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:9px 16px;
  font-size:14px;
  font-weight:800;
  letter-spacing:.01em;
  white-space:nowrap;
  border:1px solid var(--line);
  background:var(--stand);
  color:var(--label);
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.btn:hover,.btn:focus-visible{
  border-color:var(--turf);
  color:var(--turf);
  transform:translateY(-1px);
}
.btn--solid{background:var(--field);border-color:var(--field);color:#04170F}
.btn--solid:hover,.btn--solid:focus-visible{background:var(--turf);border-color:var(--turf);color:#04170F}
.btn--signal{background:var(--signal);border-color:var(--signal);color:#1A0B00}
.btn--signal:hover,.btn--signal:focus-visible{background:#FFA365;border-color:#FFA365;color:#1A0B00}

/* ---------- 7. Header ---------- */
.site-head{
  position:relative;
  z-index:50;
  background:linear-gradient(180deg,#0D1B30 0%,var(--night) 100%);
  border-bottom:1px solid var(--line);
}
.head-top{position:relative}
.head-top__inner{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:14px var(--gutter);
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(14px,2.4vw,32px);
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand__mark{
  flex:0 0 auto;
  width:30px;
  height:30px;
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:end;
  gap:3px;
  transform:skewX(var(--skew));
}
.brand__mark-bar{display:block;background:var(--field);height:100%}
.brand__mark-bar:last-child{background:var(--signal);height:58%}
.brand__text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand__name{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--label);white-space:nowrap}
.brand__tagline{font-size:11px;letter-spacing:.14em;color:var(--muted);white-space:nowrap}
.brand--foot .brand__name{font-size:18px}
.brand--foot .brand__mark{width:26px;height:26px}

/* 轮次播报带 */
.ticker{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
  overflow:hidden;
  padding-left:12px;
  border-left:2px solid var(--field);
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--muted);
}
.ticker__label{
  flex:0 0 auto;
  font-family:var(--font-sans);
  font-size:11px;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--signal);
  text-transform:uppercase;
}
.ticker__track{
  display:flex;
  gap:56px;
  width:max-content;
  white-space:nowrap;
  animation:ticker-roll 38s linear infinite;
}
.ticker__item{flex:0 0 auto}
@keyframes ticker-roll{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}

/* 行动按钮组 */
.head-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 12px;
  border:1px solid var(--line);
  background:var(--stand);
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--label);
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--turf);color:var(--turf)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:var(--turf);
  transition:transform .18s ease,opacity .18s ease;
}
.site-head[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-head[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-head[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 轮次轴导航 */
.primary-nav{
  background:var(--night);
  border-top:1px solid var(--line);
}
.round-axis{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:12px var(--gutter);
  display:flex;
  align-items:center;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.round-axis__seg{flex:0 0 auto}
.round-axis__link{
  display:block;
  padding:10px 22px;
  transform:skewX(var(--skew));
  background:var(--stand);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:14px;
  font-weight:800;
  letter-spacing:.04em;
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.round-axis__link span{display:block;transform:skewX(6deg)}
.round-axis__link:hover,.round-axis__link:focus-visible{
  transform:skewX(var(--skew)) translateY(-2px);
  border-color:var(--turf);
  color:var(--turf);
}
.round-axis__link[aria-current="page"]{
  background:var(--field);
  border-color:var(--field);
  color:#04170F;
}
.round-axis__link[aria-current="page"]:hover{
  color:#04170F;
  border-color:var(--turf);
  background:var(--turf);
}

/* ---------- 8. Footer ---------- */
.site-foot{
  margin-top:clamp(48px,7vw,96px);
  background:#08111F;
  border-top:1px solid var(--line);
  color:var(--muted);
}
.foot-grid{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) var(--gutter) clamp(28px,4vw,44px);
  display:grid;
  grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,4vw,48px);
}
.foot-brand__line{
  margin-top:14px;
  max-width:26em;
  font-size:13.5px;
  line-height:1.85;
  color:var(--muted);
}
.foot-brand__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.foot-col__title{
  font-size:12px;
  font-weight:800;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--label);
  padding-bottom:10px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.foot-links li + li{margin-top:8px}
.foot-links a{
  display:inline-block;
  font-size:14px;
  color:var(--muted);
  transition:color var(--ease),transform var(--ease);
}
.foot-links a:hover,.foot-links a:focus-visible{color:var(--turf);transform:translateX(3px)}

.foot-contact{
  background:var(--night);
  border-top:1px solid var(--line);
}
.foot-contact__list{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:clamp(20px,3vw,32px) var(--gutter);
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:18px 32px;
}
.foot-contact__row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 10px;
  min-width:0;
}
.foot-contact__key{
  flex:0 0 auto;
  padding:2px 8px;
  border:1px solid var(--line);
  font-size:11px;
  font-weight:800;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cyan);
}
.foot-contact__val{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--label);
  word-break:break-all;
  min-width:0;
}
.foot-contact__val--text{
  font-family:var(--font-sans);
  font-size:13.5px;
  color:var(--muted);
  word-break:normal;
}
.copy-btn{
  flex:0 0 auto;
  padding:3px 9px;
  border:1px solid var(--line);
  background:transparent;
  font-size:11px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--muted);
  transition:border-color var(--ease),color var(--ease);
}
.copy-btn:hover,.copy-btn:focus-visible{border-color:var(--turf);color:var(--turf)}
.copy-btn[data-copy-state="done"]{border-color:var(--field);color:var(--turf)}
.copy-btn[data-copy-state="fail"]{border-color:var(--card);color:var(--card)}

.foot-legal{background:#070F1B;border-top:1px solid var(--line)}
.foot-legal__inner{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:18px var(--gutter) 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  font-size:12.5px;
  color:var(--muted);
}
.foot-legal__copy{color:var(--muted)}
.foot-legal__icp{font-family:var(--font-mono);letter-spacing:.02em;color:var(--muted)}
.foot-legal__note{flex:1 1 320px;min-width:0;color:#6F8A84}

/* ---------- 9. Shared components ---------- */
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:clamp(12px,2vw,22px);
  margin-bottom:clamp(18px,3vw,30px);
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.section-head__no{
  font-family:var(--font-mono);
  font-size:clamp(28px,4.2vw,56px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--field);
}
.section-head__title{
  font-size:clamp(20px,2.6vw,32px);
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--label);
}

.prose{
  font-size:clamp(16px,1.15vw,17.5px);
  line-height:1.8;
  color:#D3DEDA;
}
.prose p{max-width:34em}
.prose p + p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.6em;color:var(--label)}
.prose ul{margin:1em 0}
.prose li{position:relative;padding-left:20px;max-width:34em}
.prose li + li{margin-top:.5em}
.prose li::before{
  content:"";
  position:absolute;
  left:0;
  top:.85em;
  width:9px;
  height:2px;
  background:var(--field);
}
.prose a{color:var(--turf);border-bottom:1px solid var(--line)}
.prose a:hover{border-bottom-color:var(--turf)}

.breadcrumb{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:18px var(--gutter) 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
}
.breadcrumb__item{display:inline-flex;align-items:center}
.breadcrumb__item + .breadcrumb__item::before{
  content:"/";
  margin-right:8px;
  color:var(--line);
}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--turf)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid var(--line);
  background:rgba(18,37,61,.6);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--muted);
}
.tag--field{border-color:var(--field);color:var(--turf)}
.tag--signal{border-color:var(--signal);color:var(--signal)}

.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,#102036 0%,#0A1526 58%,#0F2A3C 100%);
  border:1px solid var(--line);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,21,38,0) 42%,rgba(10,21,38,.88) 100%);
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}

/* ---------- 10. Motion ---------- */
html[data-motion="on"] [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .4s ease,transform .4s ease;
}
html[data-motion="on"] [data-reveal].is-revealed{opacity:1;transform:none}

.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:3px;
  z-index:120;
  pointer-events:none;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--field) 0%,var(--turf) 55%,var(--signal) 100%);
}

/* ---------- 11. Responsive ---------- */
@media (max-width:980px){
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .head-top__inner{
    grid-template-columns:minmax(0,1fr) auto;
    grid-template-areas:
      "brand toggle"
      "ticker ticker"
      "actions actions";
    row-gap:12px;
    padding-block:12px;
    align-items:center;
  }
  .brand{grid-area:brand}
  .ticker{grid-area:ticker;border-left-width:2px}
  .head-actions{grid-area:actions}
  .nav-toggle{grid-area:toggle;display:inline-flex}

  .primary-nav{
    max-height:0;
    overflow:hidden;
    transition:max-height .18s ease;
  }
  .site-head[data-open] .primary-nav{max-height:520px}

  .round-axis{
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding-block:16px;
    overflow-x:visible;
  }
  .round-axis__seg{width:100%}
  .round-axis__link{
    transform:none;
    padding:11px 16px;
    font-size:15px;
    border-left:3px solid var(--line);
  }
  .round-axis__link span{transform:none}
  .round-axis__link:hover,.round-axis__link:focus-visible{
    transform:translateY(-2px);
  }
  .round-axis__link[aria-current="page"]{border-left-color:var(--turf)}
}
@media (max-width:700px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .ticker{font-size:12px}
  .ticker__track{animation-duration:26s}
  .head-actions{gap:8px}
  .btn{padding:8px 13px;font-size:13px}
}
@media (max-width:560px){
  .foot-grid{grid-template-columns:minmax(0,1fr);padding-top:36px}
  .foot-contact__list{grid-template-columns:minmax(0,1fr)}
  .foot-legal__inner{flex-direction:column;align-items:flex-start;gap:8px}
  .brand__name{font-size:17px}
  .brand__tagline{font-size:10px;letter-spacing:.1em}
}

/* ---------- 12. Preferences ---------- */
@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[data-motion="on"] [data-reveal]{opacity:1;transform:none}
  .ticker__track{animation:none}
}