/* ============================================================
   九游会赛场 · 全站共享样式 /assets/site.css
   高原赛场版式：深空蓝画布 + 高原金标记 + 编辑器节奏
   ============================================================ */

:root{
  --ink-900:#0A1A2B;
  --ink-800:#12283F;
  --ink-700:#1B3A57;
  --gold:#D9A441;
  --gold-soft:#F1CE7E;
  --snow:#F6F8FA;
  --mist:#C9D6E2;
  --graphite:#1C2733;
  --saffron:#B23A34;
  --teal:#2FB6A8;
  --amber:#E28B2D;
  --glass:rgba(18,40,63,.58);

  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC","STSong","SimSun",Georgia,serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Courier New",monospace;

  --header-h:76px;
  --wrap:1240px;
  --gutter:clamp(18px,4vw,48px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --radius:2px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 18px);
}
body{
  margin:0;
  padding-top:var(--header-h);
  background:var(--ink-900);
  color:var(--snow);
  font-family:var(--font-display);
  font-size:16px;
  line-height:1.7;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video,canvas{display:block;max-width:100%;height:auto;}
h1,h2,h3,h4,p,figure,blockquote,ul,ol,dl,dd,pre{margin:0;}
ul[class],ol[class]{list-style:none;padding:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
::selection{background:var(--gold);color:var(--ink-900);}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:1px;}
html.nav-open{overflow:hidden;}

/* ---------- 中文排版与通用层级 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--snow);
}
h1{font-size:clamp(34px,5.4vw,72px);}
h2{font-size:clamp(26px,3.6vw,44px);}
h3{font-size:clamp(19px,2.2vw,26px);line-height:1.2;}
h4{font-size:17px;line-height:1.35;letter-spacing:0;}
p{max-width:68ch;}
small{font-size:13px;}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

/* ---------- 布局容器 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.bleed-top{margin-top:calc(var(--header-h) * -1);}
.section{padding-block:clamp(44px,7vw,104px);position:relative;}
.section--night{background:var(--ink-800);}
.section--snow{background:var(--snow);color:var(--graphite);}
.section--snow h1,
.section--snow h2,
.section--snow h3,
.section--snow h4{color:var(--ink-900);}
.section--snow p{color:var(--graphite);}
.section--snow .eyebrow{color:var(--saffron);}
.section--snow .rule{background:rgba(28,39,51,.16);}

.rule{
  height:1px;
  border:0;
  margin-block:clamp(28px,4vw,56px);
  background:rgba(201,214,226,.18);
}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.6vw,32px);}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr));}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr));}
@media (max-width:1023px){
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr));}
}
@media (max-width:639px){
  .grid--12{grid-template-columns:repeat(2,minmax(0,1fr));}
}

/* ---------- 展区标签 / 状态标签 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  font-family:var(--font-serif);
  font-weight:500;
  font-size:14px;
  letter-spacing:.12em;
  color:var(--gold);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:currentColor;
  flex:0 0 auto;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  padding:3px 9px;
  border:1px solid rgba(201,214,226,.28);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--mist);
  white-space:nowrap;
}
.tag--live{border-color:rgba(47,182,168,.55);color:var(--teal);}
.tag--past{border-color:rgba(226,139,45,.55);color:var(--amber);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  min-height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  letter-spacing:.02em;
  line-height:1;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--gold{background:var(--gold);color:var(--ink-900);}
.btn--gold:hover{background:var(--gold-soft);}
.btn--gold:active{transform:translateY(1px);}
.btn--ghost{
  background:transparent;
  border-color:rgba(246,248,250,.32);
  color:var(--snow);
}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-soft);}
.btn--sm{min-height:40px;padding:0 16px;font-size:14px;}

/* ---------- 正文容器 ---------- */
.prose{
  max-width:68ch;
  color:var(--graphite);
  font-size:17px;
  line-height:1.75;
}
.prose p+p{margin-top:1em;}
.prose ul,.prose ol{margin-block:1em;padding-left:1.25em;list-style:disc;}
.prose ol{list-style:decimal;}
.prose li+li{margin-top:.4em;}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em;}
.prose a{color:var(--saffron);text-decoration:underline;text-underline-offset:3px;}
.prose--invert{color:var(--mist);}
.prose--invert h2,.prose--invert h3{color:var(--snow);}
.prose--invert a{color:var(--gold-soft);}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--mist);
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  list-style:none;
  margin:0;
  padding:0;
}
.breadcrumbs li{display:inline-flex;align-items:center;}
.breadcrumbs li+li::before{
  content:"/";
  margin-right:.5rem;
  color:rgba(201,214,226,.4);
}
.breadcrumbs a{color:var(--mist);transition:color .2s var(--ease);}
.breadcrumbs a:hover{color:var(--gold-soft);}
.breadcrumbs [aria-current="page"]{color:var(--gold);}

/* ---------- 图片容器基础规则 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius);
  background:linear-gradient(140deg,var(--ink-800),var(--ink-900));
  aspect-ratio:16 / 9;
}
.media--4x3{aspect-ratio:4 / 3;}
.media--square{aspect-ratio:1 / 1;}
.media--wide{aspect-ratio:21 / 9;}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media--duotone img{
  filter:grayscale(.62) contrast(1.08) saturate(.72);
}
.media--duotone::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(145deg,rgba(10,26,43,.74),rgba(18,40,63,.22));
  pointer-events:none;
}
.media__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:14px 16px;
  font-size:13px;
  line-height:1.5;
  color:var(--mist);
  background:linear-gradient(180deg,rgba(10,26,43,0),rgba(10,26,43,.88));
}
@media (max-width:639px){
  .media--wide{aspect-ratio:16 / 9;}
  .media__caption{padding:10px 12px;font-size:12px;}
}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:999;
  padding:12px 18px;
  background:var(--gold);
  color:var(--ink-900);
  font-weight:700;
  font-size:14px;
  border-radius:var(--radius);
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{
  transform:translateY(0);
  outline:2px solid var(--snow);
  outline-offset:2px;
}

/* ============================================================
   页头
   ============================================================ */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  color:var(--snow);
}
.site-header__bar{
  position:relative;
  background:linear-gradient(
    180deg,
    rgba(10,26,43,.94) 0%,
    rgba(18,40,63,.58) 62%,
    rgba(10,26,43,0) 100%
  );
  border-bottom:1px solid transparent;
  transition:background-color .26s var(--ease),
             border-color .26s var(--ease),
             box-shadow .26s var(--ease);
}
.site-header.is-scrolled .site-header__bar{
  background:var(--ink-800);
  border-bottom-color:rgba(217,164,65,.38);
  box-shadow:0 14px 34px -22px rgba(0,0,0,.95);
}
.site-header__inner{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,28px);
  min-height:var(--header-h);
  height:var(--header-h);
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:var(--snow);
}
.brand__mark{
  position:relative;
  flex:0 0 auto;
  width:30px;
  height:30px;
  border:1.5px solid var(--gold);
  border-radius:2px;
  transform:skewX(-9deg);
  display:grid;
  place-items:center;
}
.brand__mark::after{
  content:"";
  width:10px;
  height:10px;
  background:var(--gold);
  clip-path:polygon(0 0,100% 50%,0 100%);
  transform:skewX(9deg);
}
.brand__text{
  display:flex;
  flex-direction:column;
  line-height:1.06;
}
.brand__cn{
  font-family:var(--font-display);
  font-weight:800;
  font-size:19px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand__en{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.24em;
  color:var(--gold-soft);
  text-transform:uppercase;
}

/* 主导航 */
.site-nav{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:clamp(8px,1.6vw,24px);
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(2px,1.2vw,18px);
  margin:0;
  padding:0;
  list-style:none;
}
.site-nav__item{display:flex;}
.site-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
  padding:8px 8px;
  color:var(--mist);
  font-size:15px;
  font-weight:500;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.site-nav__idx{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:rgba(217,164,65,.62);
  transition:color .2s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:8px;
  right:8px;
  bottom:4px;
  height:2px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.site-nav__link:hover{color:var(--snow);}
.site-nav__link:hover .site-nav__idx{color:var(--gold-soft);}
.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{color:var(--gold-soft);font-weight:700;}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--gold);}
.site-nav__meta{
  display:none;
  font-family:var(--font-serif);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--gold-soft);
}
.site-nav__item--cta{display:none;}

/* 右侧动作区 */
.site-header__actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.site-header__cta{white-space:nowrap;}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  min-height:44px;
  min-width:44px;
  padding:0 8px;
  color:var(--snow);
  border:1px solid rgba(246,248,250,.22);
  border-radius:var(--radius);
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);background:rgba(217,164,65,.08);}
.nav-toggle__bars{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:18px;
  height:18px;
}
.nav-toggle__bar{
  display:block;
  height:2px;
  width:100%;
  background:currentColor;
  border-radius:1px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.nav-toggle[aria-expanded="true"]{border-color:var(--gold);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){
  transform:translateY(3.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){
  transform:translateY(-3.5px) rotate(-45deg);
}

/* 滚动进度 */
.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  overflow:hidden;
  background:rgba(201,214,226,.12);
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--gold),var(--gold-soft));
  transition:width .12s linear;
}

/* 页头断点 */
@media (max-width:1180px){
  .site-nav__idx{display:none;}
}
@media (max-width:1023px){
  :root{--header-h:66px;}
  .site-nav{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    display:block;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    padding:10px var(--gutter) 34px;
    background:var(--ink-900);
    border-top:1px solid rgba(217,164,65,.30);
    border-bottom:1px solid rgba(217,164,65,.30);
    box-shadow:0 28px 56px -30px rgba(0,0,0,.9);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),
               visibility 0s linear .22s;
  }
  .site-nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
    transition:opacity .22s var(--ease),transform .22s var(--ease),
               visibility 0s;
  }
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav__item{
    display:block;
    border-bottom:1px solid rgba(201,214,226,.12);
  }
  .site-nav__link{
    width:100%;
    justify-content:flex-start;
    gap:10px;
    padding:15px 4px;
    font-size:16px;
    color:var(--snow);
  }
  .site-nav__link::after{display:none;}
  .site-nav__link[aria-current="page"]{
    color:var(--gold);
    box-shadow:inset 3px 0 0 var(--gold);
    padding-left:14px;
  }
  .site-nav__idx{display:inline;}
  .site-nav__meta{
    display:block;
    margin-top:22px;
    font-family:var(--font-serif);
    font-size:13px;
    letter-spacing:.12em;
    color:var(--mist);
  }
  .site-nav__item--cta{
    display:block;
    border-bottom:0;
    margin-top:20px;
  }
  .site-nav__cta{width:100%;}
  .nav-toggle{display:inline-flex;}
}
@media (max-width:479px){
  .site-header__cta{display:none;}
  .brand__cn{font-size:17px;}
  .brand__mark{width:26px;height:26px;}
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:0;
  padding-top:clamp(46px,7vw,92px);
  background:var(--ink-900);
  color:var(--mist);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:56px;
  background:var(--ink-800);
  clip-path:polygon(
    0 100%,0 46%,9% 22%,19% 52%,30% 12%,41% 44%,
    52% 18%,63% 50%,74% 16%,85% 46%,94% 24%,100% 42%,
    100% 100%
  );
  pointer-events:none;
}
.site-footer::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:2px;
  background:linear-gradient(90deg,var(--gold),rgba(217,164,65,0));
}
.site-footer__top{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1.6fr);
  gap:clamp(30px,5vw,76px);
  padding-block:clamp(26px,4vw,52px);
}
.site-footer__brand{display:flex;flex-direction:column;gap:12px;}
.site-footer__eyebrow{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold);
}
.site-footer__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(24px,3vw,34px);
  line-height:1.1;
  letter-spacing:-.02em;
  color:var(--snow);
  max-width:none;
}
.site-footer__closing{
  max-width:30ch;
  font-size:14px;
  line-height:1.8;
  color:var(--mist);
}
.site-footer__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,40px);
}
.footer-col{display:flex;flex-direction:column;gap:14px;}
.footer-col__title{
  position:relative;
  display:flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-serif);
  font-weight:500;
  font-size:14px;
  letter-spacing:.14em;
  color:var(--snow);
}
.footer-col__title::before{
  content:"";
  width:9px;
  height:9px;
  background:var(--gold);
  transform:skewX(-9deg);
}
.footer-col:nth-child(1) .footer-col__title::before{background:var(--gold);}
.footer-col:nth-child(2) .footer-col__title::before{background:var(--teal);}
.footer-col:nth-child(3) .footer-col__title::before{background:var(--amber);}
.footer-col__list{
  display:flex;
  flex-direction:column;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-col__link{
  display:inline-block;
  padding:7px 0;
  min-height:36px;
  font-size:14px;
  color:var(--mist);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col__link:hover{
  color:var(--gold-soft);
  transform:translateX(3px);
}
.site-footer__meta{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding-top:clamp(20px,3vw,30px);
  padding-bottom:clamp(28px,4vw,44px);
  border-top:1px solid rgba(201,214,226,.16);
  font-size:13px;
  line-height:1.8;
  color:var(--mist);
}
.site-footer__contact{max-width:none;}
.site-footer__address{max-width:none;color:rgba(201,214,226,.72);}
.site-footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-top:6px;
}
.site-footer__legal-line{
  max-width:none;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(201,214,226,.78);
}
.site-footer__legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  margin:0;
  padding:0;
  list-style:none;
}
.site-footer__legal-links a{
  display:inline-block;
  padding:6px 0;
  min-height:34px;
  font-size:13px;
  color:var(--mist);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.site-footer__legal-links a:hover{
  color:var(--gold-soft);
  border-bottom-color:var(--gold);
}

@media (max-width:1023px){
  .site-footer__top{grid-template-columns:1fr;}
  .site-footer__closing{max-width:52ch;}
}
@media (max-width:639px){
  .site-footer__cols{grid-template-columns:1fr 1fr;}
  .footer-col:last-child{grid-column:1 / -1;}
  .site-footer__legal{flex-direction:column;align-items:flex-start;}
}

/* ============================================================
   滚动显现（仅在 JS 就绪时隐藏）
   ============================================================ */
.reveal-ready [data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .28s var(--ease),transform .28s var(--ease);
  will-change:opacity,transform;
}
.reveal-ready [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ============================================================
   动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
    scroll-behavior:auto !important;
  }
  .reveal-ready [data-reveal]{opacity:1;transform:none;}
  .footer-col__link:hover{transform:none;}
}