/* ============================================================
   华体会体育主站 — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   ============================================================ */

:root{
  --c-night:#081C2C;
  --c-lift:#102A43;
  --c-orange:#FF6B35;
  --c-gold:#D9A441;
  --c-white:#F4F7FA;
  --c-mist:#A9B7C6;
  --c-sky:#3FA7D6;
  --c-green:#2FBF71;
  --c-alert:#D64545;
  --c-ink:#101820;

  --line-soft:rgba(244,247,250,.10);
  --line-mid:rgba(169,183,198,.26);
  --line-strong:rgba(169,183,198,.46);

  --font-display:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  --gutter:clamp(16px,4vw,40px);
  --width:1280px;
  --shell-pad:clamp(16px,2.4vw,32px);
}

*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  min-height:100vh;
  background-color:var(--c-night);
  background-image:
    linear-gradient(to right,rgba(169,183,198,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(169,183,198,.05) 1px,transparent 1px);
  background-size:72px 72px;
  color:var(--c-white);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,video{display:block;max-width:100%;height:auto;}
figure{margin:0;}
button{font:inherit;color:inherit;}
a{color:var(--c-sky);text-decoration:none;}
p{margin:0;}
ul,ol{margin:0;padding:0;}

h1,h2,h3,h4{
  margin:0;
  font-family:var(--font-display);
  color:var(--c-white);
  font-weight:700;
  line-height:1.2;
}

:focus-visible{
  outline:2px solid var(--c-sky);
  outline-offset:3px;
}

::selection{background:var(--c-orange);color:var(--c-ink);}

#main-content{display:block;scroll-margin-top:132px;}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  display:inline-block;
  padding:11px 20px;
  background:var(--c-orange);
  color:var(--c-ink);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  border:1px solid var(--c-orange);
  transform:translateY(-200%);
  transition:transform .22s ease;
}
.skip-link:focus{transform:translateY(0);}

/* ============================================================
   头部
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--c-night);
  box-shadow:0 1px 0 rgba(244,247,250,.08);
}

/* 上层信息条 */
.header-top{
  background:linear-gradient(100deg,#0a2336 0%,#081C2C 55%,#0c2233 100%);
  border-bottom:1px solid rgba(63,167,214,.18);
  transition:background .3s ease;
}
.site-header[data-scrolled] .header-top{
  background:linear-gradient(100deg,#0c2940 0%,#0a2133 55%,#0e2740 100%);
}
.header-top__inner{
  width:min(var(--width),100% - var(--shell-pad) * 2);
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,26px);
  min-height:66px;
  padding-block:10px;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:var(--c-white);
}
.brand__mark{
  width:12px;
  height:28px;
  flex:0 0 auto;
  background:linear-gradient(180deg,var(--c-orange) 0 56%,var(--c-gold) 56% 100%);
  transform:skewX(-9deg);
}
.brand__text{display:block;}
.brand__name{
  display:block;
  font-family:var(--font-display);
  font-size:19px;
  font-weight:800;
  line-height:1.15;
  letter-spacing:.05em;
  transform:skewX(-3deg);
}
.brand__sub{
  display:block;
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  color:var(--c-mist);
  text-transform:uppercase;
  transition:color .25s ease;
}
.site-header[data-scrolled] .brand__sub{color:var(--c-gold);}

/* 状态徽标 */
.header-status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 11px;
  border:1px solid rgba(217,164,65,.42);
  background:rgba(217,164,65,.08);
  color:var(--c-gold);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  white-space:nowrap;
}
.header-status__dot{
  width:6px;
  height:6px;
  flex:0 0 auto;
  background:var(--c-green);
  box-shadow:0 0 0 3px rgba(47,191,113,.18);
  animation:shell-pulse 2.4s ease-in-out infinite;
}

/* 上层快捷入口 */
.header-utility{
  display:flex;
  align-items:center;
  gap:6px;
  margin:0 0 0 auto;
  padding:0;
  list-style:none;
}
.header-utility__link{
  display:inline-block;
  padding:7px 13px;
  border:1px solid var(--line-mid);
  color:var(--c-mist);
  font-size:13px;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.header-utility__link:hover{color:var(--c-white);border-color:var(--c-sky);background:rgba(63,167,214,.1);}
.header-utility__link--accent{
  background:var(--c-orange);
  border-color:var(--c-orange);
  color:var(--c-ink);
  font-weight:700;
}
.header-utility__link--accent:hover{
  background:var(--c-gold);
  border-color:var(--c-gold);
  color:var(--c-ink);
}

/* 移动端栏目按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:9px 13px;
  background:transparent;
  border:1px solid var(--line-mid);
  color:var(--c-white);
  cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--c-sky);background:rgba(63,167,214,.1);}
.nav-toggle__bars{
  display:flex;
  flex-direction:column;
  gap:4px;
}
.nav-toggle__bar{
  display:block;
  width:16px;
  height:2px;
  background:var(--c-orange);
  transform-origin:center;
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle__label{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--c-mist);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 下层进度条式导航 */
.header-nav{
  position:relative;
  background:#0a1f31;
  border-top:1px solid rgba(244,247,250,.05);
}
.header-nav__inner{
  width:min(var(--width),100% - var(--shell-pad) * 2);
  margin-inline:auto;
  display:flex;
  align-items:stretch;
  min-height:54px;
}
.nav-list{
  display:flex;
  align-items:stretch;
  flex:1 1 auto;
  list-style:none;
}
.nav-item{display:flex;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:17px 22px 17px 0;
  margin-right:22px;
  color:var(--c-mist);
  font-size:15px;
  font-weight:500;
  letter-spacing:.03em;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:22px;
  bottom:0;
  height:3px;
  background:var(--line-mid);
  transform:scaleX(.35);
  transform-origin:left center;
  transition:transform .28s ease,background-color .28s ease;
}
.nav-link:hover{color:var(--c-white);}
.nav-link:hover::after{transform:scaleX(1);background:rgba(217,164,65,.75);}
.nav-link[aria-current="page"]{
  color:var(--c-white);
  font-weight:700;
}
.nav-link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--c-orange);
  box-shadow:0 0 12px rgba(255,107,53,.5);
}
.nav-scan{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding-left:18px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--c-mist);
  white-space:nowrap;
}
.nav-scan__dot{
  width:6px;
  height:6px;
  background:var(--c-green);
  animation:shell-pulse 2.4s ease-in-out infinite;
}

/* 阅读进度 */
.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:2px;
  background:rgba(244,247,250,.07);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--c-sky) 0%,var(--c-orange) 62%,var(--c-gold) 100%);
  transition:width .12s linear;
}

@keyframes shell-pulse{
  0%,100%{opacity:1;}
  50%{opacity:.35;}
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,110px);
  background:#061624;
  border-top:1px solid rgba(244,247,250,.1);
  color:var(--c-mist);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--c-orange) 0%,var(--c-gold) 34%,var(--c-sky) 66%,rgba(63,167,214,0) 100%);
}

.footer-top{
  width:min(var(--width),100% - var(--shell-pad) * 2);
  margin-inline:auto;
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(40px,6vw,72px) clamp(28px,4vw,44px);
}

.footer-brand__name{
  display:inline-block;
  font-family:var(--font-display);
  font-size:22px;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--c-white);
  transform:skewX(-3deg);
}
.footer-brand__desc{
  margin:16px 0 24px;
  max-width:34ch;
  font-size:14px;
  line-height:1.8;
  color:var(--c-mist);
}
.footer-cta{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 20px;
  background:var(--c-orange);
  border:1px solid var(--c-orange);
  color:var(--c-ink);
  font-size:14px;
  font-weight:700;
  letter-spacing:.03em;
  transition:background-color .2s ease,border-color .2s ease;
}
.footer-cta::after{
  content:"→";
  font-family:var(--font-mono);
  transition:transform .2s ease;
}
.footer-cta:hover{background:var(--c-gold);border-color:var(--c-gold);}
.footer-cta:hover::after{transform:translateX(4px);}

.footer-col__title{
  margin:0 0 16px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(244,247,250,.12);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--c-gold);
}
.footer-links{
  display:grid;
  gap:10px;
  list-style:none;
}
.footer-link{
  color:var(--c-mist);
  font-size:14px;
  transition:color .18s ease,padding-left .18s ease;
}
.footer-link:hover{color:var(--c-orange);padding-left:4px;}

.footer-contact{
  width:min(var(--width),100% - var(--shell-pad) * 2);
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  gap:8px 34px;
  padding-block:20px;
  border-top:1px solid rgba(244,247,250,.1);
  border-bottom:1px solid rgba(244,247,250,.1);
}
.footer-contact__line{
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--c-mist);
}
.footer-contact__label{
  margin-right:8px;
  letter-spacing:.12em;
  color:var(--c-sky);
}

.footer-meta{
  width:min(var(--width),100% - var(--shell-pad) * 2);
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 26px;
  padding-block:20px 32px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.03em;
  color:rgba(169,183,198,.82);
}
.footer-meta__copy{margin:0;}
.footer-meta__icp{margin:0;color:var(--c-mist);}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-left:auto;
  list-style:none;
}
.footer-legal__link{
  color:var(--c-mist);
  font-size:12.5px;
  transition:color .18s ease;
}
.footer-legal__link:hover{color:var(--c-white);}

/* ============================================================
   基础组件
   ============================================================ */
.container{
  width:min(1240px,100% - var(--gutter) * 2);
  margin-inline:auto;
}
.container--narrow{
  width:min(820px,100% - var(--gutter) * 2);
  margin-inline:auto;
}

.section{padding-block:clamp(48px,7vw,100px);}
.section--tight{padding-block:clamp(30px,4vw,56px);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--c-gold);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  flex:0 0 auto;
  background:var(--c-orange);
}

.display-title{
  font-family:var(--font-display);
  font-size:clamp(38px,6.2vw,86px);
  font-weight:800;
  line-height:1.02;
  letter-spacing:-.015em;
  transform:skewX(-2.5deg);
  transform-origin:left bottom;
}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(26px,3.4vw,42px);
  font-weight:700;
  line-height:1.16;
  letter-spacing:.01em;
}
.lead{
  max-width:62ch;
  margin:0 0 24px;
  font-size:clamp(16px,1.35vw,19px);
  line-height:1.8;
  color:var(--c-mist);
}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:clamp(20px,3vw,36px);
  padding-bottom:16px;
  border-bottom:1px solid var(--line-soft);
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 26px;
  border:1px solid transparent;
  border-radius:0;
  background:transparent;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.03em;
  text-align:center;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{
  background:var(--c-orange);
  border-color:var(--c-orange);
  color:var(--c-ink);
}
.btn--primary:hover{background:var(--c-gold);border-color:var(--c-gold);color:var(--c-ink);}
.btn--ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--c-white);
}
.btn--ghost:hover{border-color:var(--c-sky);color:var(--c-sky);background:rgba(63,167,214,.1);}
.btn--sm{padding:9px 18px;font-size:13.5px;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-weight:700;
  color:var(--c-orange);
}
.link-arrow::after{
  content:"→";
  font-family:var(--font-mono);
  transition:transform .2s ease;
}
.link-arrow:hover::after{transform:translateX(4px);}

/* 标签 */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--line-mid);
  color:var(--c-mist);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  white-space:nowrap;
}
.tag--orange{background:var(--c-orange);border-color:var(--c-orange);color:var(--c-ink);font-weight:600;}
.tag--gold{background:rgba(217,164,65,.1);border-color:rgba(217,164,65,.5);color:var(--c-gold);}
.tag--green{background:rgba(47,191,113,.1);border-color:rgba(47,191,113,.45);color:var(--c-green);}
.tag--alert{background:var(--c-alert);border-color:var(--c-alert);color:var(--c-white);font-weight:600;}
.tag--sky{background:rgba(63,167,214,.1);border-color:rgba(63,167,214,.45);color:var(--c-sky);}

/* 面包屑 */
.breadcrumb{
  padding-block:15px;
  border-bottom:1px solid var(--line-soft);
}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
}
.breadcrumb__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--c-mist);
}
.breadcrumb__link{color:var(--c-mist);transition:color .18s ease;}
.breadcrumb__link:hover{color:var(--c-orange);}
.breadcrumb__sep{color:rgba(169,183,198,.45);}
.breadcrumb__item[aria-current="page"]{color:var(--c-gold);}

/* 网格 */
.grid{display:grid;gap:clamp(16px,2vw,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--sidebar{grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);}

/* 面板与分隔线 */
.surface{
  position:relative;
  padding:clamp(18px,2.2vw,30px);
  background:var(--c-lift);
  border:1px solid var(--line-soft);
}
.surface--flush{padding:0;}
.surface--outline{background:transparent;}
.rule{
  height:1px;
  margin:0;
  border:0;
  background:var(--line-soft);
}

/* 图片容器 */
.image-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line-soft);
  background:
    linear-gradient(135deg,rgba(63,167,214,.18) 0%,rgba(8,28,44,.4) 45%,rgba(255,107,53,.16) 100%),
    var(--c-lift);
}
.image-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.image-frame--wide{aspect-ratio:21/9;}
.image-frame--tall{aspect-ratio:3/4;}
.image-frame--square{aspect-ratio:1/1;}
.image-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  padding:8px 12px;
  background:rgba(8,28,44,.84);
  color:var(--c-mist);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
}

/* 筛选按钮 */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.filter-btn{
  padding:8px 16px;
  border:1px solid var(--line-mid);
  background:transparent;
  color:var(--c-mist);
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.filter-btn:hover{color:var(--c-white);border-color:var(--c-sky);}
.filter-btn.is-active,
.filter-btn[aria-pressed="true"]{
  background:var(--c-orange);
  border-color:var(--c-orange);
  color:var(--c-ink);
  font-weight:700;
}

/* 长文排版 */
.prose{
  max-width:72ch;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-mist);
}
.prose > *{margin-top:0;margin-bottom:1em;}
.prose h2,.prose h3{
  margin-block:1.6em .6em;
  color:var(--c-white);
  line-height:1.3;
}
.prose h2{font-size:clamp(22px,2.4vw,30px);}
.prose h3{font-size:clamp(18px,1.8vw,22px);}
.prose strong{color:var(--c-white);}
.prose ul,.prose ol{padding-left:1.25em;}
.prose li + li{margin-top:.45em;}
.prose a{color:var(--c-sky);text-decoration:underline;text-underline-offset:3px;}

/* 渐进显现 */
html.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s ease,transform .55s ease;
}
html.js-reveal [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1100px){
  .header-status{display:none;}
}

@media (max-width:1024px){
  .footer-top{grid-template-columns:1fr 1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:980px){
  .header-utility{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-top__inner{min-height:62px;}

  .header-nav{
    display:block;
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    transition:max-height .35s ease,visibility .35s ease;
  }
  .header-nav[data-open]{
    max-height:70vh;
    overflow-y:auto;
    visibility:visible;
    border-top:1px solid var(--line-soft);
  }
  .header-nav__inner{
    flex-direction:column;
    width:100%;
    padding-inline:var(--shell-pad);
    min-height:0;
  }
  .nav-list{
    flex-direction:column;
    width:100%;
  }
  .nav-item{display:block;}
  .nav-link{
    width:100%;
    padding:15px 4px;
    margin-right:0;
    border-bottom:1px solid var(--line-soft);
    font-size:16px;
  }
  .nav-link::after{
    right:0;
    height:2px;
    transform:scaleX(0);
  }
  .nav-link[aria-current="page"]{
    background:rgba(255,107,53,.1);
    padding-left:12px;
  }
  .nav-scan{display:none;}
  .scroll-progress{position:relative;}

  #main-content{scroll-margin-top:70px;}
}

@media (max-width:960px){
  .grid--3,.grid--4,.grid--sidebar{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:700px){
  .footer-top{grid-template-columns:1fr;}
  .footer-contact{flex-direction:column;gap:10px;}
  .footer-legal{margin-left:0;}
}

@media (max-width:640px){
  .grid--2,.grid--3,.grid--4,.grid--sidebar{grid-template-columns:minmax(0,1fr);}
  .image-frame--wide{aspect-ratio:16/10;}
  .image-frame--tall{aspect-ratio:4/5;}
  .display-title{transform:skewX(-2deg);}
  .footer-meta{font-size:12px;}
}

/* ============================================================
   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;
  }
  html.js-reveal [data-reveal]{
    opacity:1;
    transform:none;
  }
  .skip-link{transition:none;}
}