/* ==========================================================================
   大江体育 · /assets/site.css
   共享外壳：设计令牌、中文排版、页头、页脚、基础组件、图片容器
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-green:#071B16;
  --moss:#0C2A22;
  --night-blue:#0B2742;
  --rock-blue:#163A5A;
  --stone:#2D3B3A;
  --paper:#F2EFE6;
  --orange:#E4622E;
  --card-yellow:#F2C14E;
  --card-red:#D9443F;
  --tundra:#6F8F77;
  --silver:#AAB8B2;

  --red-soft:#F4A9A5;
  --green-soft:#C3D8C8;

  --line:rgba(242,239,230,.14);
  --line-strong:rgba(242,239,230,.26);
  --ink-line:rgba(7,27,22,.16);

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

  --shell:1240px;
  --gutter:24px;
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

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

body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
img,picture,svg,video{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
[hidden]{display:none !important;}

/* ---------- 3. 基础排版（中文优先） ---------- */
body{
  background:var(--ink-green);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.18;
  letter-spacing:.01em;
  text-wrap:balance;
}

h1{font-size:clamp(34px,5vw,64px);line-height:1.04;}
h2{font-size:clamp(24px,2.6vw,34px);}
h3{font-size:clamp(19px,1.6vw,22px);}
h4{font-size:17px;}

p{text-wrap:pretty;}

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

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

/* ---------- 4. 通用工具 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.visually-hidden{
  position:absolute !important;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

.text-mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}

.skip-link{
  position:absolute;
  top:-80px;
  left:16px;
  z-index:120;
  padding:11px 18px;
  background:var(--card-yellow);
  color:var(--ink-green);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  border-bottom:3px solid var(--orange);
  transition:top .18s ease;
}
.skip-link:focus,
.skip-link:focus-visible{top:8px;}

/* ---------- 5. 页头 ---------- */
.site-header{
  position:relative;
  z-index:60;
  background:var(--moss);
  color:var(--paper);
  border-bottom:2px solid var(--orange);
}

.scroll-progress{
  position:fixed;
  top:0;left:0;right:0;
  height:3px;
  z-index:110;
  background:rgba(242,239,230,.08);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--orange) 0%,var(--card-yellow) 100%);
  transition:width .12s linear;
}

/* 状态条 */
.header-status{
  background:var(--night-blue);
  border-bottom:1px solid rgba(242,239,230,.10);
}
.header-status__inner{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px 20px;
  min-height:36px;
  padding-block:7px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
}
.status-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--card-yellow);
  white-space:nowrap;
}
.status-dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 3px rgba(228,98,46,.22);
}
.status-update{color:var(--silver);}
.status-link{
  margin-left:auto;
  color:var(--paper);
  padding-bottom:2px;
  border-bottom:1px solid rgba(228,98,46,.8);
  white-space:nowrap;
  transition:color .18s ease,border-color .18s ease;
}
.status-link:hover{color:var(--orange);border-color:var(--orange);}

/* 刊头 */
.header-mast{
  background-color:var(--moss);
  background-image:repeating-linear-gradient(90deg,rgba(242,239,230,.05) 0 1px,transparent 1px 96px);
}
.header-mast__inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  padding-block:22px 18px;
}
.mast-side{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--tundra);
  white-space:nowrap;
}
.mast-side--end{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:12px;
}
.mast-kicker{justify-self:start;}

.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  text-align:center;
}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(30px,3.8vw,48px);
  line-height:.94;
  letter-spacing:.12em;
  color:var(--paper);
  transition:color .18s ease;
}
.brand:hover .brand__name{color:var(--orange);}
.brand__sub{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--silver);
}

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
}

/* 导航 */
.site-nav{
  background:var(--ink-green);
  border-top:1px solid var(--line);
}
.site-nav__inner{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:50px;
}
.nav-list{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:2px;
}
.nav-list a{
  position:relative;
  display:inline-block;
  padding:11px 16px;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--silver);
  transition:color .18s ease;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:5px;
  height:2px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-list a:hover{color:var(--paper);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a[aria-current="page"]{color:var(--paper);}
.nav-list a[aria-current="page"]::after{transform:scaleX(1);}

.nav-cta{display:none;}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 13px;
  border:1px solid var(--line-strong);
  background:rgba(7,27,22,.5);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange);}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;height:2px;
  background:currentColor;
  transition:background .18s ease;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;height:2px;
  background:currentColor;
  transition:transform .2s ease;
}
.nav-toggle__bars::before{top:-6px;}
.nav-toggle__bars::after{top:6px;}
.site-header[data-open="true"] .nav-toggle__bars{background:transparent;}
.site-header[data-open="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg);}
.site-header[data-open="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg);}
.nav-toggle__label{line-height:1;}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  background-color:var(--ink-green);
  background-image:repeating-linear-gradient(135deg,rgba(242,239,230,.035) 0 2px,transparent 2px 24px);
  color:var(--paper);
  border-top:3px solid var(--orange);
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);
  gap:48px;
  padding-block:56px 44px;
  border-bottom:1px solid var(--line);
}
.footer-brand{min-width:0;}
.footer-brand__name{
  display:inline-block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:30px;
  letter-spacing:.14em;
  color:var(--paper);
  transition:color .18s ease;
}
.footer-brand__name:hover{color:var(--orange);}
.footer-brand__sub{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--tundra);
}
.footer-note{
  margin-top:14px;
  max-width:36ch;
  font-size:14px;
  line-height:1.7;
  color:var(--silver);
}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:32px 28px;
}
.footer-col{min-width:0;}
.footer-col__title{
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--orange);
}
.footer-links{display:grid;gap:9px;}
.footer-links a{
  font-size:15px;
  color:var(--paper);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-links a:hover{color:var(--orange);border-color:rgba(228,98,46,.6);}

.contact-list{display:grid;gap:14px;}
.contact-item{
  display:grid;
  grid-template-columns:1fr auto;
  align-items:center;
  gap:2px 10px;
}
.contact-item__label{
  grid-column:1;
  grid-row:1;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--tundra);
}
.contact-item .copy-btn{grid-column:2;grid-row:1;}
.contact-item__value{
  grid-column:1 / -1;
  grid-row:2;
  font-size:14px;
  line-height:1.55;
  color:var(--paper);
  font-variant-numeric:tabular-nums;
  overflow-wrap:anywhere;
}

.copy-btn{
  padding:4px 9px;
  border:1px solid rgba(242,239,230,.3);
  background:transparent;
  color:var(--silver);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  line-height:1.5;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.copy-btn:hover{
  background:var(--card-yellow);
  border-color:var(--card-yellow);
  color:var(--ink-green);
}
.copy-btn[data-copied="true"]{
  background:var(--card-yellow);
  border-color:var(--card-yellow);
  color:var(--ink-green);
}

.download-card{
  background:var(--night-blue);
  border:1px solid var(--line);
  padding:18px 24px 18px 18px;
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,0 100%);
}
.download-card__title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:18px;
  letter-spacing:.08em;
  color:var(--paper);
}
.download-card__detail{
  margin-top:6px;
  font-size:13px;
  line-height:1.65;
  color:var(--silver);
}
.download-card .btn{
  margin-top:14px;
  width:100%;
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 26px;
  padding-block:20px 30px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--silver);
}
.legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
}
.legal-links a{
  color:var(--silver);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.legal-links a:hover{color:var(--paper);border-color:var(--orange);}
.footer-icp{color:var(--tundra);}
.footer-year{margin-left:auto;color:var(--tundra);}

.copy-feedback{
  position:fixed;
  left:50%;
  bottom:24px;
  z-index:130;
  transform:translateX(-50%);
  padding:10px 18px;
  background:var(--card-yellow);
  color:var(--ink-green);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  border-left:4px solid var(--orange);
  max-width:calc(100vw - 32px);
}
.copy-feedback:empty{display:none;}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1;
  text-align:center;
  border:1px solid transparent;
  background:transparent;
  color:var(--paper);
  transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn--sm{padding:9px 15px;font-size:13px;letter-spacing:.1em;}
.btn--primary{
  background:var(--orange);
  border-color:var(--orange);
  color:var(--ink-green);
}
.btn--primary:hover{
  background:var(--card-yellow);
  border-color:var(--card-yellow);
  color:var(--ink-green);
}
.btn--ghost{
  border-color:var(--line-strong);
  color:var(--paper);
}
.btn--ghost:hover{
  border-color:var(--orange);
  color:var(--orange);
  background:rgba(228,98,46,.10);
}
.btn--quiet{
  padding-inline:0;
  border:0;
  color:var(--silver);
}
.btn--quiet:hover{color:var(--orange);}
.btn--block{width:100%;}

/* ---------- 8. 状态标签与筛选 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  line-height:1.6;
  border:1px solid var(--line-strong);
  background:rgba(242,239,230,.04);
  color:var(--silver);
}
.tag--yellow{
  border-color:rgba(242,193,78,.55);
  background:rgba(242,193,78,.12);
  color:var(--card-yellow);
}
.tag--red{
  border-color:rgba(217,68,63,.65);
  background:rgba(217,68,63,.16);
  color:var(--red-soft);
}
.tag--green{
  border-color:rgba(111,143,119,.6);
  background:rgba(111,143,119,.16);
  color:var(--green-soft);
}

.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.chip{
  padding:7px 14px;
  border:1px solid var(--line-strong);
  background:rgba(242,239,230,.03);
  color:var(--silver);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  line-height:1.5;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.chip:hover{color:var(--paper);border-color:var(--tundra);}
.chip[aria-pressed="true"]{
  background:var(--card-yellow);
  border-color:var(--card-yellow);
  color:var(--ink-green);
}

/* ---------- 9. 面板与标题辅助 ---------- */
.panel{
  position:relative;
  background:var(--moss);
  border:1px solid var(--line);
  padding:22px;
}
.panel--cut{
  padding:24px 26px;
  clip-path:polygon(0 0,calc(100% - 20px) 0,100% 20px,100% 100%,20px 100%,0 calc(100% - 20px));
}
.panel--blue{background:var(--night-blue);}
.panel--paper{
  background:var(--paper);
  border-color:var(--ink-line);
  color:var(--ink-green);
}

.rule{
  display:block;
  width:52px;
  height:3px;
  border:0;
  background:var(--orange);
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--orange);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumbs{
  padding-block:16px 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--silver);
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumbs li{
  display:flex;
  align-items:center;
  gap:8px;
}
.breadcrumbs li + li::before{
  content:"/";
  color:var(--tundra);
}
.breadcrumbs a{
  color:var(--silver);
  transition:color .18s ease;
}
.breadcrumbs a:hover{color:var(--orange);}
.breadcrumbs [aria-current="page"]{color:var(--paper);}

/* ---------- 11. 正文块 ---------- */
.prose{
  max-width:70ch;
  font-size:16px;
  line-height:1.8;
  color:inherit;
}
.prose p + p{margin-top:1em;}
.prose h2{margin-top:2em;margin-bottom:.6em;}
.prose h3{margin-top:1.6em;margin-bottom:.5em;}
.prose ul,
.prose ol{margin-top:.8em;padding-left:1.2em;list-style:disc;}
.prose ol{list-style:decimal;}
.prose li + li{margin-top:.4em;}
.prose a{
  color:var(--orange);
  border-bottom:1px solid rgba(228,98,46,.5);
  transition:color .18s ease,border-color .18s ease;
}
.prose a:hover{color:var(--card-yellow);border-color:var(--card-yellow);}
.prose strong{font-weight:700;}

/* ---------- 12. 分区与网格 ---------- */
.section{padding-block:56px;}
.section--tight{padding-block:32px;}
.section--deep{background:var(--ink-green);}
.section--blue{background:var(--night-blue);}
.section--paper{
  background:var(--paper);
  color:var(--ink-green);
}
.section--paper .prose a{color:#A83A14;border-color:rgba(168,58,20,.5);}
.section--paper .prose a:hover{color:#7E2A0C;border-color:#7E2A0C;}
.section--paper .eyebrow{color:#A83A14;}

.grid{display:grid;gap:24px;}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--8-4{grid-template-columns:minmax(0,2fr) minmax(0,1fr);}

.stat{
  display:flex;
  flex-direction:column;
  gap:2px;
}
.stat__value{
  font-family:var(--font-mono);
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.1;
  color:var(--card-yellow);
  font-variant-numeric:tabular-nums;
}
.stat__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--silver);
}

/* ---------- 13. 图片容器（页面阶段放置占位图） ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 10;
  background:linear-gradient(160deg,var(--rock-blue) 0%,var(--night-blue) 60%,var(--ink-green) 100%);
  border:1px solid var(--line);
  border-radius:0;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:2;
  pointer-events:none;
  background:
    repeating-linear-gradient(115deg,rgba(228,98,46,.12) 0 2px,transparent 2px 20px),
    linear-gradient(180deg,rgba(7,27,22,0) 55%,rgba(7,27,22,.55) 100%);
}
.media-frame img,
.media-frame picture,
.media-frame svg{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:4 / 5;}
.media-frame--square{aspect-ratio:1 / 1;}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1080px){
  .footer-top{grid-template-columns:minmax(0,1fr);gap:34px;}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:900px){
  .grid--2,
  .grid--3,
  .grid--8-4{grid-template-columns:minmax(0,1fr);}
  .section{padding-block:44px;}
}

@media (max-width:899px){
  .header-mast__inner{
    grid-template-columns:1fr auto;
    padding-block:16px 14px;
    gap:10px;
  }
  .mast-side--start{display:none;}
  .header-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand{align-items:flex-start;text-align:left;}

  .site-nav{display:none;}
  .site-header[data-open="true"] .site-nav{display:block;}
  .site-nav__inner{
    flex-direction:column;
    align-items:stretch;
    gap:16px;
    min-height:0;
    padding-block:12px 20px;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .nav-list a{
    padding:14px 4px;
    border-bottom:1px solid var(--line);
    font-size:16px;
    color:var(--paper);
  }
  .nav-list a::after{
    left:0;
    right:auto;
    bottom:8px;
    width:22px;
  }
  .nav-cta{
    display:flex;
    flex-direction:column;
    gap:10px;
  }
}

@media (max-width:720px){
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-top{padding-block:40px 32px;}
  .footer-year{margin-left:0;}
  .footer-legal{padding-block:16px 26px;}
}

@media (max-width:640px){
  :root{--gutter:18px;}
  .header-status__inner{
    gap:8px 14px;
    font-size:11px;
    letter-spacing:.05em;
  }
  .status-update{display:none;}
  .brand__sub{font-size:10px;letter-spacing:.22em;}
  .copy-feedback{bottom:16px;font-size:12px;}
}

/* ---------- 15. 动效克制 ---------- */
@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;
  }
}